Merge remote-tracking branch 'upstream/pull/3354'

[rails.git] / vendor / assets / iD / iD.js

diff --git a/vendor/assets/iD/iD.js b/vendor/assets/iD/iD.js
index c3470e8808d3f13ffd1be0a23388ed7e87a69dd5..929da2dd897561a44e4f6e2378bc5222f7964612 100644 (file)
--- a/vendor/assets/iD/iD.js
+++ b/vendor/assets/iD/iD.js
@@ -2,39 +2,24 @@
 
        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
 
 
        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
 

-       function getDefaultExportFromCjs (x) {
-               return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
-       }
-
-       function createCommonjsModule(fn, basedir, module) {
-               return module = {
-                       path: basedir,
-                       exports: {},
-                       require: function (path, base) {
-                               return commonjsRequire(path, (base === undefined || base === null) ? module.path : base);
-                       }
-               }, fn(module, module.exports), module.exports;
-       }
-
-       function commonjsRequire () {
-               throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
-       }
-

        var check = function (it) {
          return it && it.Math == Math && it;
        };
 
        // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
        var check = function (it) {
          return it && it.Math == Math && it;
        };
 
        // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028

-       var global_1 =
-         // eslint-disable-next-line no-undef
+       var global$F =
+         // eslint-disable-next-line es/no-global-this -- safe

          check(typeof globalThis == 'object' && globalThis) ||
          check(typeof window == 'object' && window) ||
          check(typeof globalThis == 'object' && globalThis) ||
          check(typeof window == 'object' && window) ||

+         // eslint-disable-next-line no-restricted-globals -- safe

          check(typeof self == 'object' && self) ||
          check(typeof commonjsGlobal == 'object' && commonjsGlobal) ||
          check(typeof self == 'object' && self) ||
          check(typeof commonjsGlobal == 'object' && commonjsGlobal) ||

-         // eslint-disable-next-line no-new-func
-         Function('return this')();
+         // eslint-disable-next-line no-new-func -- fallback
+         (function () { return this; })() || Function('return this')();

 
 

-       var fails = function (exec) {
+       var objectGetOwnPropertyDescriptor = {};
+
+       var fails$N = function (exec) {

          try {
            return !!exec();
          } catch (error) {
          try {
            return !!exec();
          } catch (error) {


@@ -42,29 +27,31 @@
          }
        };
 
          }
        };
 

-       // Thank's IE8 for his funny defineProperty
-       var descriptors = !fails(function () {
+       var fails$M = fails$N;
+
+       // Detect IE8's incomplete defineProperty implementation
+       var descriptors = !fails$M(function () {
+         // eslint-disable-next-line es/no-object-defineproperty -- required for testing

          return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
        });
 
          return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
        });
 

-       var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
-       var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+       var objectPropertyIsEnumerable = {};
+
+       var $propertyIsEnumerable$1 = {}.propertyIsEnumerable;
+       // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+       var getOwnPropertyDescriptor$5 = Object.getOwnPropertyDescriptor;

 
        // Nashorn ~ JDK8 bug
 
        // Nashorn ~ JDK8 bug

-       var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);
+       var NASHORN_BUG = getOwnPropertyDescriptor$5 && !$propertyIsEnumerable$1.call({ 1: 2 }, 1);

 
        // `Object.prototype.propertyIsEnumerable` method implementation
 
        // `Object.prototype.propertyIsEnumerable` method implementation

-       // https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
-       var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
-         var descriptor = getOwnPropertyDescriptor(this, V);
+       // https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable
+       objectPropertyIsEnumerable.f = NASHORN_BUG ? function propertyIsEnumerable(V) {
+         var descriptor = getOwnPropertyDescriptor$5(this, V);

          return !!descriptor && descriptor.enumerable;
          return !!descriptor && descriptor.enumerable;

-       } : nativePropertyIsEnumerable;
-
-       var objectPropertyIsEnumerable = {
-               f: f
-       };
+       } : $propertyIsEnumerable$1;

 
 

-       var createPropertyDescriptor = function (bitmap, value) {
+       var createPropertyDescriptor$7 = function (bitmap, value) {

          return {
            enumerable: !(bitmap & 1),
            configurable: !(bitmap & 2),
          return {
            enumerable: !(bitmap & 1),
            configurable: !(bitmap & 2),


@@ -73,251 +60,333 @@
          };
        };
 
          };
        };
 

-       var toString = {}.toString;
+       var toString$2 = {}.toString;

 
 

-       var classofRaw = function (it) {
-         return toString.call(it).slice(8, -1);
+       var classofRaw$1 = function (it) {
+         return toString$2.call(it).slice(8, -1);

        };
 
        };
 

-       var split = ''.split;
+       var fails$L = fails$N;
+       var classof$c = classofRaw$1;
+
+       var split$1 = ''.split;

 
        // fallback for non-array-like ES3 and non-enumerable old V8 strings
 
        // fallback for non-array-like ES3 and non-enumerable old V8 strings

-       var indexedObject = fails(function () {
+       var indexedObject = fails$L(function () {

          // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
          // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346

-         // eslint-disable-next-line no-prototype-builtins
+         // eslint-disable-next-line no-prototype-builtins -- safe

          return !Object('z').propertyIsEnumerable(0);
        }) ? function (it) {
          return !Object('z').propertyIsEnumerable(0);
        }) ? function (it) {

-         return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
+         return classof$c(it) == 'String' ? split$1.call(it, '') : Object(it);

        } : Object;
 
        // `RequireObjectCoercible` abstract operation
        } : Object;
 
        // `RequireObjectCoercible` abstract operation

-       // https://tc39.github.io/ecma262/#sec-requireobjectcoercible
-       var requireObjectCoercible = function (it) {
+       // https://tc39.es/ecma262/#sec-requireobjectcoercible
+       var requireObjectCoercible$e = function (it) {

          if (it == undefined) throw TypeError("Can't call method on " + it);
          return it;
        };
 
        // toObject with fallback for non-array-like ES3 strings
          if (it == undefined) throw TypeError("Can't call method on " + it);
          return it;
        };
 
        // toObject with fallback for non-array-like ES3 strings

+       var IndexedObject$4 = indexedObject;
+       var requireObjectCoercible$d = requireObjectCoercible$e;

 
 

-
-
-       var toIndexedObject = function (it) {
-         return indexedObject(requireObjectCoercible(it));
+       var toIndexedObject$b = function (it) {
+         return IndexedObject$4(requireObjectCoercible$d(it));

        };
 
        };
 

-       var isObject = function (it) {
+       var isObject$r = function (it) {

          return typeof it === 'object' ? it !== null : typeof it === 'function';
        };
 
          return typeof it === 'object' ? it !== null : typeof it === 'function';
        };
 

+       var isObject$q = isObject$r;
+

        // `ToPrimitive` abstract operation
        // `ToPrimitive` abstract operation

-       // https://tc39.github.io/ecma262/#sec-toprimitive
+       // https://tc39.es/ecma262/#sec-toprimitive

        // instead of the ES6 spec version, we didn't implement @@toPrimitive case
        // and the second argument - flag - preferred type is a string
        // instead of the ES6 spec version, we didn't implement @@toPrimitive case
        // and the second argument - flag - preferred type is a string

-       var toPrimitive = function (input, PREFERRED_STRING) {
-         if (!isObject(input)) return input;
+       var toPrimitive$7 = function (input, PREFERRED_STRING) {
+         if (!isObject$q(input)) return input;

          var fn, val;
          var fn, val;

-         if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
-         if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
-         if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
+         if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject$q(val = fn.call(input))) return val;
+         if (typeof (fn = input.valueOf) == 'function' && !isObject$q(val = fn.call(input))) return val;
+         if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject$q(val = fn.call(input))) return val;

          throw TypeError("Can't convert object to primitive value");
        };
 
          throw TypeError("Can't convert object to primitive value");
        };
 

-       var hasOwnProperty = {}.hasOwnProperty;
+       var requireObjectCoercible$c = requireObjectCoercible$e;
+
+       // `ToObject` abstract operation
+       // https://tc39.es/ecma262/#sec-toobject
+       var toObject$i = function (argument) {
+         return Object(requireObjectCoercible$c(argument));
+       };
+
+       var toObject$h = toObject$i;
+
+       var hasOwnProperty$3 = {}.hasOwnProperty;

 
 

-       var has = function (it, key) {
-         return hasOwnProperty.call(it, key);
+       var has$j = Object.hasOwn || function hasOwn(it, key) {
+         return hasOwnProperty$3.call(toObject$h(it), key);

        };
 
        };
 

-       var document$1 = global_1.document;
+       var global$E = global$F;
+       var isObject$p = isObject$r;
+
+       var document$3 = global$E.document;

        // typeof document.createElement is 'object' in old IE
        // typeof document.createElement is 'object' in old IE

-       var EXISTS = isObject(document$1) && isObject(document$1.createElement);
+       var EXISTS = isObject$p(document$3) && isObject$p(document$3.createElement);

 
 

-       var documentCreateElement = function (it) {
-         return EXISTS ? document$1.createElement(it) : {};
+       var documentCreateElement$1 = function (it) {
+         return EXISTS ? document$3.createElement(it) : {};

        };
 
        };
 

+       var DESCRIPTORS$m = descriptors;
+       var fails$K = fails$N;
+       var createElement$1 = documentCreateElement$1;
+

        // Thank's IE8 for his funny defineProperty
        // Thank's IE8 for his funny defineProperty

-       var ie8DomDefine = !descriptors && !fails(function () {
-         return Object.defineProperty(documentCreateElement('div'), 'a', {
+       var ie8DomDefine = !DESCRIPTORS$m && !fails$K(function () {
+         // eslint-disable-next-line es/no-object-defineproperty -- requied for testing
+         return Object.defineProperty(createElement$1('div'), 'a', {

            get: function () { return 7; }
          }).a != 7;
        });
 
            get: function () { return 7; }
          }).a != 7;
        });
 

-       var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+       var DESCRIPTORS$l = descriptors;
+       var propertyIsEnumerableModule$2 = objectPropertyIsEnumerable;
+       var createPropertyDescriptor$6 = createPropertyDescriptor$7;
+       var toIndexedObject$a = toIndexedObject$b;
+       var toPrimitive$6 = toPrimitive$7;
+       var has$i = has$j;
+       var IE8_DOM_DEFINE$1 = ie8DomDefine;
+
+       // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+       var $getOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor;

 
        // `Object.getOwnPropertyDescriptor` method
 
        // `Object.getOwnPropertyDescriptor` method

-       // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
-       var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
-         O = toIndexedObject(O);
-         P = toPrimitive(P, true);
-         if (ie8DomDefine) try {
-           return nativeGetOwnPropertyDescriptor(O, P);
+       // https://tc39.es/ecma262/#sec-object.getownpropertydescriptor
+       objectGetOwnPropertyDescriptor.f = DESCRIPTORS$l ? $getOwnPropertyDescriptor$1 : function getOwnPropertyDescriptor(O, P) {
+         O = toIndexedObject$a(O);
+         P = toPrimitive$6(P, true);
+         if (IE8_DOM_DEFINE$1) try {
+           return $getOwnPropertyDescriptor$1(O, P);

          } catch (error) { /* empty */ }
          } catch (error) { /* empty */ }

-         if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
+         if (has$i(O, P)) return createPropertyDescriptor$6(!propertyIsEnumerableModule$2.f.call(O, P), O[P]);

        };
 
        };
 

-       var objectGetOwnPropertyDescriptor = {
-               f: f$1
-       };
+       var objectDefineProperty = {};

 
 

-       var anObject = function (it) {
-         if (!isObject(it)) {
+       var isObject$o = isObject$r;
+
+       var anObject$m = function (it) {
+         if (!isObject$o(it)) {

            throw TypeError(String(it) + ' is not an object');
          } return it;
        };
 
            throw TypeError(String(it) + ' is not an object');
          } return it;
        };
 

-       var nativeDefineProperty = Object.defineProperty;
+       var DESCRIPTORS$k = descriptors;
+       var IE8_DOM_DEFINE = ie8DomDefine;
+       var anObject$l = anObject$m;
+       var toPrimitive$5 = toPrimitive$7;
+
+       // eslint-disable-next-line es/no-object-defineproperty -- safe
+       var $defineProperty$1 = Object.defineProperty;

 
        // `Object.defineProperty` method
 
        // `Object.defineProperty` method

-       // https://tc39.github.io/ecma262/#sec-object.defineproperty
-       var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
-         anObject(O);
-         P = toPrimitive(P, true);
-         anObject(Attributes);
-         if (ie8DomDefine) try {
-           return nativeDefineProperty(O, P, Attributes);
+       // https://tc39.es/ecma262/#sec-object.defineproperty
+       objectDefineProperty.f = DESCRIPTORS$k ? $defineProperty$1 : function defineProperty(O, P, Attributes) {
+         anObject$l(O);
+         P = toPrimitive$5(P, true);
+         anObject$l(Attributes);
+         if (IE8_DOM_DEFINE) try {
+           return $defineProperty$1(O, P, Attributes);

          } catch (error) { /* empty */ }
          if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
          if ('value' in Attributes) O[P] = Attributes.value;
          return O;
        };
 
          } catch (error) { /* empty */ }
          if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
          if ('value' in Attributes) O[P] = Attributes.value;
          return O;
        };
 

-       var objectDefineProperty = {
-               f: f$2
-       };
+       var DESCRIPTORS$j = descriptors;
+       var definePropertyModule$7 = objectDefineProperty;
+       var createPropertyDescriptor$5 = createPropertyDescriptor$7;

 
 

-       var createNonEnumerableProperty = descriptors ? function (object, key, value) {
-         return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
+       var createNonEnumerableProperty$e = DESCRIPTORS$j ? function (object, key, value) {
+         return definePropertyModule$7.f(object, key, createPropertyDescriptor$5(1, value));

        } : function (object, key, value) {
          object[key] = value;
          return object;
        };
 
        } : function (object, key, value) {
          object[key] = value;
          return object;
        };
 

-       var setGlobal = function (key, value) {
+       var redefine$g = {exports: {}};
+
+       var global$D = global$F;
+       var createNonEnumerableProperty$d = createNonEnumerableProperty$e;
+
+       var setGlobal$3 = function (key, value) {

          try {
          try {

-           createNonEnumerableProperty(global_1, key, value);
+           createNonEnumerableProperty$d(global$D, key, value);

          } catch (error) {
          } catch (error) {

-           global_1[key] = value;
+           global$D[key] = value;

          } return value;
        };
 
          } return value;
        };
 

+       var global$C = global$F;
+       var setGlobal$2 = setGlobal$3;
+

        var SHARED = '__core-js_shared__';
        var SHARED = '__core-js_shared__';

-       var store = global_1[SHARED] || setGlobal(SHARED, {});
+       var store$4 = global$C[SHARED] || setGlobal$2(SHARED, {});

 
 

-       var sharedStore = store;
+       var sharedStore = store$4;
+
+       var store$3 = sharedStore;

 
        var functionToString = Function.toString;
 
 
        var functionToString = Function.toString;
 

-       // this helper broken in `3.4.1-3.4.4`, so we can't use `shared` helper
-       if (typeof sharedStore.inspectSource != 'function') {
-         sharedStore.inspectSource = function (it) {
+       // this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper
+       if (typeof store$3.inspectSource != 'function') {
+         store$3.inspectSource = function (it) {

            return functionToString.call(it);
          };
        }
 
            return functionToString.call(it);
          };
        }
 

-       var inspectSource = sharedStore.inspectSource;
+       var inspectSource$3 = store$3.inspectSource;
+
+       var global$B = global$F;
+       var inspectSource$2 = inspectSource$3;

 
 

-       var WeakMap = global_1.WeakMap;
+       var WeakMap$1 = global$B.WeakMap;

 
 

-       var nativeWeakMap = typeof WeakMap === 'function' && /native code/.test(inspectSource(WeakMap));
+       var nativeWeakMap = typeof WeakMap$1 === 'function' && /native code/.test(inspectSource$2(WeakMap$1));
+
+       var shared$5 = {exports: {}};

 
        var isPure = false;
 
 
        var isPure = false;
 

-       var shared = createCommonjsModule(function (module) {
-       (module.exports = function (key, value) {
-         return sharedStore[key] || (sharedStore[key] = value !== undefined ? value : {});
+       var store$2 = sharedStore;
+
+       (shared$5.exports = function (key, value) {
+         return store$2[key] || (store$2[key] = value !== undefined ? value : {});

        })('versions', []).push({
        })('versions', []).push({

-         version: '3.6.5',
-         mode:  'global',
-         copyright: '© 2020 Denis Pushkarev (zloirock.ru)'
-       });
+         version: '3.15.0',
+         mode: 'global',
+         copyright: '© 2021 Denis Pushkarev (zloirock.ru)'

        });
 
        });
 

-       var id = 0;
+       var id$2 = 0;

        var postfix = Math.random();
 
        var postfix = Math.random();
 

-       var uid = function (key) {
-         return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
+       var uid$5 = function (key) {
+         return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id$2 + postfix).toString(36);

        };
 
        };
 

-       var keys = shared('keys');
+       var shared$4 = shared$5.exports;
+       var uid$4 = uid$5;

 
 

-       var sharedKey = function (key) {
-         return keys[key] || (keys[key] = uid(key));
+       var keys$3 = shared$4('keys');
+
+       var sharedKey$4 = function (key) {
+         return keys$3[key] || (keys$3[key] = uid$4(key));

        };
 
        };
 

-       var hiddenKeys = {};
+       var hiddenKeys$6 = {};
+
+       var NATIVE_WEAK_MAP = nativeWeakMap;
+       var global$A = global$F;
+       var isObject$n = isObject$r;
+       var createNonEnumerableProperty$c = createNonEnumerableProperty$e;
+       var objectHas = has$j;
+       var shared$3 = sharedStore;
+       var sharedKey$3 = sharedKey$4;
+       var hiddenKeys$5 = hiddenKeys$6;

 
 

-       var WeakMap$1 = global_1.WeakMap;
-       var set, get, has$1;
+       var OBJECT_ALREADY_INITIALIZED = 'Object already initialized';
+       var WeakMap = global$A.WeakMap;
+       var set$4, get$5, has$h;

 
        var enforce = function (it) {
 
        var enforce = function (it) {

-         return has$1(it) ? get(it) : set(it, {});
+         return has$h(it) ? get$5(it) : set$4(it, {});

        };
 
        var getterFor = function (TYPE) {
          return function (it) {
            var state;
        };
 
        var getterFor = function (TYPE) {
          return function (it) {
            var state;

-           if (!isObject(it) || (state = get(it)).type !== TYPE) {
+           if (!isObject$n(it) || (state = get$5(it)).type !== TYPE) {

              throw TypeError('Incompatible receiver, ' + TYPE + ' required');
            } return state;
          };
        };
 
              throw TypeError('Incompatible receiver, ' + TYPE + ' required');
            } return state;
          };
        };
 

-       if (nativeWeakMap) {
-         var store$1 = new WeakMap$1();
+       if (NATIVE_WEAK_MAP || shared$3.state) {
+         var store$1 = shared$3.state || (shared$3.state = new WeakMap());

          var wmget = store$1.get;
          var wmhas = store$1.has;
          var wmset = store$1.set;
          var wmget = store$1.get;
          var wmhas = store$1.has;
          var wmset = store$1.set;

-         set = function (it, metadata) {
+         set$4 = function (it, metadata) {
+           if (wmhas.call(store$1, it)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
+           metadata.facade = it;

            wmset.call(store$1, it, metadata);
            return metadata;
          };
            wmset.call(store$1, it, metadata);
            return metadata;
          };

-         get = function (it) {
+         get$5 = function (it) {

            return wmget.call(store$1, it) || {};
          };
            return wmget.call(store$1, it) || {};
          };

-         has$1 = function (it) {
+         has$h = function (it) {

            return wmhas.call(store$1, it);
          };
        } else {
            return wmhas.call(store$1, it);
          };
        } else {

-         var STATE = sharedKey('state');
-         hiddenKeys[STATE] = true;
-         set = function (it, metadata) {
-           createNonEnumerableProperty(it, STATE, metadata);
+         var STATE = sharedKey$3('state');
+         hiddenKeys$5[STATE] = true;
+         set$4 = function (it, metadata) {
+           if (objectHas(it, STATE)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
+           metadata.facade = it;
+           createNonEnumerableProperty$c(it, STATE, metadata);

            return metadata;
          };
            return metadata;
          };

-         get = function (it) {
-           return has(it, STATE) ? it[STATE] : {};
+         get$5 = function (it) {
+           return objectHas(it, STATE) ? it[STATE] : {};

          };
          };

-         has$1 = function (it) {
-           return has(it, STATE);
+         has$h = function (it) {
+           return objectHas(it, STATE);

          };
        }
 
        var internalState = {
          };
        }
 
        var internalState = {

-         set: set,
-         get: get,
-         has: has$1,
+         set: set$4,
+         get: get$5,
+         has: has$h,

          enforce: enforce,
          getterFor: getterFor
        };
 
          enforce: enforce,
          getterFor: getterFor
        };
 

-       var redefine = createCommonjsModule(function (module) {
-       var getInternalState = internalState.get;
-       var enforceInternalState = internalState.enforce;
+       var global$z = global$F;
+       var createNonEnumerableProperty$b = createNonEnumerableProperty$e;
+       var has$g = has$j;
+       var setGlobal$1 = setGlobal$3;
+       var inspectSource$1 = inspectSource$3;
+       var InternalStateModule$9 = internalState;
+
+       var getInternalState$7 = InternalStateModule$9.get;
+       var enforceInternalState$1 = InternalStateModule$9.enforce;

        var TEMPLATE = String(String).split('String');
 
        var TEMPLATE = String(String).split('String');
 

-       (module.exports = function (O, key, value, options) {
+       (redefine$g.exports = function (O, key, value, options) {

          var unsafe = options ? !!options.unsafe : false;
          var simple = options ? !!options.enumerable : false;
          var noTargetGet = options ? !!options.noTargetGet : false;
          var unsafe = options ? !!options.unsafe : false;
          var simple = options ? !!options.enumerable : false;
          var noTargetGet = options ? !!options.noTargetGet : false;

+         var state;

          if (typeof value == 'function') {
          if (typeof value == 'function') {

-           if (typeof key == 'string' && !has(value, 'name')) createNonEnumerableProperty(value, 'name', key);
-           enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
+           if (typeof key == 'string' && !has$g(value, 'name')) {
+             createNonEnumerableProperty$b(value, 'name', key);
+           }
+           state = enforceInternalState$1(value);
+           if (!state.source) {
+             state.source = TEMPLATE.join(typeof key == 'string' ? key : '');
+           }

          }
          }

-         if (O === global_1) {
+         if (O === global$z) {

            if (simple) O[key] = value;
            if (simple) O[key] = value;

-           else setGlobal(key, value);
+           else setGlobal$1(key, value);

            return;
          } else if (!unsafe) {
            delete O[key];
            return;
          } else if (!unsafe) {
            delete O[key];


@@ -325,64 +394,78 @@
            simple = true;
          }
          if (simple) O[key] = value;
            simple = true;
          }
          if (simple) O[key] = value;

-         else createNonEnumerableProperty(O, key, value);
+         else createNonEnumerableProperty$b(O, key, value);

        // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
        })(Function.prototype, 'toString', function toString() {
        // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
        })(Function.prototype, 'toString', function toString() {

-         return typeof this == 'function' && getInternalState(this).source || inspectSource(this);
-       });
+         return typeof this == 'function' && getInternalState$7(this).source || inspectSource$1(this);

        });
 
        });
 

-       var path = global_1;
+       var global$y = global$F;
+
+       var path$2 = global$y;
+
+       var path$1 = path$2;
+       var global$x = global$F;

 
 

-       var aFunction = function (variable) {
+       var aFunction$a = function (variable) {

          return typeof variable == 'function' ? variable : undefined;
        };
 
          return typeof variable == 'function' ? variable : undefined;
        };
 

-       var getBuiltIn = function (namespace, method) {
-         return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace])
-           : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
+       var getBuiltIn$9 = function (namespace, method) {
+         return arguments.length < 2 ? aFunction$a(path$1[namespace]) || aFunction$a(global$x[namespace])
+           : path$1[namespace] && path$1[namespace][method] || global$x[namespace] && global$x[namespace][method];

        };
 
        };
 

-       var ceil = Math.ceil;
-       var floor = Math.floor;
+       var objectGetOwnPropertyNames = {};
+
+       var ceil$1 = Math.ceil;
+       var floor$7 = Math.floor;

 
        // `ToInteger` abstract operation
 
        // `ToInteger` abstract operation

-       // https://tc39.github.io/ecma262/#sec-tointeger
-       var toInteger = function (argument) {
-         return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
+       // https://tc39.es/ecma262/#sec-tointeger
+       var toInteger$b = function (argument) {
+         return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor$7 : ceil$1)(argument);

        };
 
        };
 

-       var min = Math.min;
+       var toInteger$a = toInteger$b;
+
+       var min$9 = Math.min;

 
        // `ToLength` abstract operation
 
        // `ToLength` abstract operation

-       // https://tc39.github.io/ecma262/#sec-tolength
-       var toLength = function (argument) {
-         return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
+       // https://tc39.es/ecma262/#sec-tolength
+       var toLength$q = function (argument) {
+         return argument > 0 ? min$9(toInteger$a(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991

        };
 
        };
 

-       var max = Math.max;
-       var min$1 = Math.min;
+       var toInteger$9 = toInteger$b;
+
+       var max$4 = Math.max;
+       var min$8 = Math.min;

 
        // Helper for a popular repeating case of the spec:
        // Let integer be ? ToInteger(index).
        // If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).
 
        // Helper for a popular repeating case of the spec:
        // Let integer be ? ToInteger(index).
        // If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).

-       var toAbsoluteIndex = function (index, length) {
-         var integer = toInteger(index);
-         return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
+       var toAbsoluteIndex$8 = function (index, length) {
+         var integer = toInteger$9(index);
+         return integer < 0 ? max$4(integer + length, 0) : min$8(integer, length);

        };
 
        };
 

+       var toIndexedObject$9 = toIndexedObject$b;
+       var toLength$p = toLength$q;
+       var toAbsoluteIndex$7 = toAbsoluteIndex$8;
+

        // `Array.prototype.{ indexOf, includes }` methods implementation
        // `Array.prototype.{ indexOf, includes }` methods implementation

-       var createMethod = function (IS_INCLUDES) {
+       var createMethod$6 = function (IS_INCLUDES) {

          return function ($this, el, fromIndex) {
          return function ($this, el, fromIndex) {

-           var O = toIndexedObject($this);
-           var length = toLength(O.length);
-           var index = toAbsoluteIndex(fromIndex, length);
+           var O = toIndexedObject$9($this);
+           var length = toLength$p(O.length);
+           var index = toAbsoluteIndex$7(fromIndex, length);

            var value;
            // Array#includes uses SameValueZero equality algorithm
            var value;
            // Array#includes uses SameValueZero equality algorithm

-           // eslint-disable-next-line no-self-compare
+           // eslint-disable-next-line no-self-compare -- NaN check

            if (IS_INCLUDES && el != el) while (length > index) {
              value = O[index++];
            if (IS_INCLUDES && el != el) while (length > index) {
              value = O[index++];

-             // eslint-disable-next-line no-self-compare
+             // eslint-disable-next-line no-self-compare -- NaN check

              if (value != value) return true;
            // Array#indexOf ignores holes, Array#includes - not
            } else for (;length > index; index++) {
              if (value != value) return true;
            // Array#indexOf ignores holes, Array#includes - not
            } else for (;length > index; index++) {


@@ -393,31 +476,33 @@
 
        var arrayIncludes = {
          // `Array.prototype.includes` method
 
        var arrayIncludes = {
          // `Array.prototype.includes` method

-         // https://tc39.github.io/ecma262/#sec-array.prototype.includes
-         includes: createMethod(true),
+         // https://tc39.es/ecma262/#sec-array.prototype.includes
+         includes: createMethod$6(true),

          // `Array.prototype.indexOf` method
          // `Array.prototype.indexOf` method

-         // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
-         indexOf: createMethod(false)
+         // https://tc39.es/ecma262/#sec-array.prototype.indexof
+         indexOf: createMethod$6(false)

        };
 
        };
 

+       var has$f = has$j;
+       var toIndexedObject$8 = toIndexedObject$b;

        var indexOf = arrayIncludes.indexOf;
        var indexOf = arrayIncludes.indexOf;

-
+       var hiddenKeys$4 = hiddenKeys$6;

 
        var objectKeysInternal = function (object, names) {
 
        var objectKeysInternal = function (object, names) {

-         var O = toIndexedObject(object);
+         var O = toIndexedObject$8(object);

          var i = 0;
          var result = [];
          var key;
          var i = 0;
          var result = [];
          var key;

-         for (key in O) !has(hiddenKeys, key) && has(O, key) && result.push(key);
+         for (key in O) !has$f(hiddenKeys$4, key) && has$f(O, key) && result.push(key);

          // Don't enum bug & hidden keys
          // Don't enum bug & hidden keys

-         while (names.length > i) if (has(O, key = names[i++])) {
+         while (names.length > i) if (has$f(O, key = names[i++])) {

            ~indexOf(result, key) || result.push(key);
          }
          return result;
        };
 
        // IE8- don't enum bug keys
            ~indexOf(result, key) || result.push(key);
          }
          return result;
        };
 
        // IE8- don't enum bug keys

-       var enumBugKeys = [
+       var enumBugKeys$3 = [

          'constructor',
          'hasOwnProperty',
          'isPrototypeOf',
          'constructor',
          'hasOwnProperty',
          'isPrototypeOf',


@@ -427,67 +512,79 @@
          'valueOf'
        ];
 
          'valueOf'
        ];
 

-       var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');
+       var internalObjectKeys$1 = objectKeysInternal;
+       var enumBugKeys$2 = enumBugKeys$3;
+
+       var hiddenKeys$3 = enumBugKeys$2.concat('length', 'prototype');

 
        // `Object.getOwnPropertyNames` method
 
        // `Object.getOwnPropertyNames` method

-       // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
-       var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
-         return objectKeysInternal(O, hiddenKeys$1);
+       // https://tc39.es/ecma262/#sec-object.getownpropertynames
+       // eslint-disable-next-line es/no-object-getownpropertynames -- safe
+       objectGetOwnPropertyNames.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
+         return internalObjectKeys$1(O, hiddenKeys$3);

        };
 
        };
 

-       var objectGetOwnPropertyNames = {
-               f: f$3
-       };
+       var objectGetOwnPropertySymbols = {};

 
 

-       var f$4 = Object.getOwnPropertySymbols;
+       // eslint-disable-next-line es/no-object-getownpropertysymbols -- safe
+       objectGetOwnPropertySymbols.f = Object.getOwnPropertySymbols;

 
 

-       var objectGetOwnPropertySymbols = {
-               f: f$4
-       };
+       var getBuiltIn$8 = getBuiltIn$9;
+       var getOwnPropertyNamesModule$1 = objectGetOwnPropertyNames;
+       var getOwnPropertySymbolsModule$2 = objectGetOwnPropertySymbols;
+       var anObject$k = anObject$m;

 
        // all object keys, includes non-enumerable and symbols
 
        // all object keys, includes non-enumerable and symbols

-       var ownKeys = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
-         var keys = objectGetOwnPropertyNames.f(anObject(it));
-         var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
+       var ownKeys$1 = getBuiltIn$8('Reflect', 'ownKeys') || function ownKeys(it) {
+         var keys = getOwnPropertyNamesModule$1.f(anObject$k(it));
+         var getOwnPropertySymbols = getOwnPropertySymbolsModule$2.f;

          return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
        };
 
          return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
        };
 

-       var copyConstructorProperties = function (target, source) {
+       var has$e = has$j;
+       var ownKeys = ownKeys$1;
+       var getOwnPropertyDescriptorModule$3 = objectGetOwnPropertyDescriptor;
+       var definePropertyModule$6 = objectDefineProperty;
+
+       var copyConstructorProperties$2 = function (target, source) {

          var keys = ownKeys(source);
          var keys = ownKeys(source);

-         var defineProperty = objectDefineProperty.f;
-         var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+         var defineProperty = definePropertyModule$6.f;
+         var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule$3.f;

          for (var i = 0; i < keys.length; i++) {
            var key = keys[i];
          for (var i = 0; i < keys.length; i++) {
            var key = keys[i];

-           if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
+           if (!has$e(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));

          }
        };
 
          }
        };
 

+       var fails$J = fails$N;
+

        var replacement = /#|\.prototype\./;
 
        var replacement = /#|\.prototype\./;
 

-       var isForced = function (feature, detection) {
-         var value = data[normalize(feature)];
+       var isForced$5 = function (feature, detection) {
+         var value = data[normalize$1(feature)];

          return value == POLYFILL ? true
            : value == NATIVE ? false
          return value == POLYFILL ? true
            : value == NATIVE ? false

-           : typeof detection == 'function' ? fails(detection)
+           : typeof detection == 'function' ? fails$J(detection)

            : !!detection;
        };
 
            : !!detection;
        };
 

-       var normalize = isForced.normalize = function (string) {
+       var normalize$1 = isForced$5.normalize = function (string) {

          return String(string).replace(replacement, '.').toLowerCase();
        };
 
          return String(string).replace(replacement, '.').toLowerCase();
        };
 

-       var data = isForced.data = {};
-       var NATIVE = isForced.NATIVE = 'N';
-       var POLYFILL = isForced.POLYFILL = 'P';
-
-       var isForced_1 = isForced;
-
-       var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
-
-
-
+       var data = isForced$5.data = {};
+       var NATIVE = isForced$5.NATIVE = 'N';
+       var POLYFILL = isForced$5.POLYFILL = 'P';

 
 

+       var isForced_1 = isForced$5;

 
 

+       var global$w = global$F;
+       var getOwnPropertyDescriptor$4 = objectGetOwnPropertyDescriptor.f;
+       var createNonEnumerableProperty$a = createNonEnumerableProperty$e;
+       var redefine$f = redefine$g.exports;
+       var setGlobal = setGlobal$3;
+       var copyConstructorProperties$1 = copyConstructorProperties$2;
+       var isForced$4 = isForced_1;

 
        /*
          options.target      - name of the target object
 
        /*
          options.target      - name of the target object


@@ -509,106 +606,384 @@
          var STATIC = options.stat;
          var FORCED, target, key, targetProperty, sourceProperty, descriptor;
          if (GLOBAL) {
          var STATIC = options.stat;
          var FORCED, target, key, targetProperty, sourceProperty, descriptor;
          if (GLOBAL) {

-           target = global_1;
+           target = global$w;

          } else if (STATIC) {
          } else if (STATIC) {

-           target = global_1[TARGET] || setGlobal(TARGET, {});
+           target = global$w[TARGET] || setGlobal(TARGET, {});

          } else {
          } else {

-           target = (global_1[TARGET] || {}).prototype;
+           target = (global$w[TARGET] || {}).prototype;

          }
          if (target) for (key in source) {
            sourceProperty = source[key];
            if (options.noTargetGet) {
          }
          if (target) for (key in source) {
            sourceProperty = source[key];
            if (options.noTargetGet) {

-             descriptor = getOwnPropertyDescriptor$1(target, key);
+             descriptor = getOwnPropertyDescriptor$4(target, key);

              targetProperty = descriptor && descriptor.value;
            } else targetProperty = target[key];
              targetProperty = descriptor && descriptor.value;
            } else targetProperty = target[key];

-           FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
+           FORCED = isForced$4(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);

            // contained in target
            if (!FORCED && targetProperty !== undefined) {
              if (typeof sourceProperty === typeof targetProperty) continue;
            // contained in target
            if (!FORCED && targetProperty !== undefined) {
              if (typeof sourceProperty === typeof targetProperty) continue;

-             copyConstructorProperties(sourceProperty, targetProperty);
+             copyConstructorProperties$1(sourceProperty, targetProperty);

            }
            // add a flag to not completely full polyfills
            if (options.sham || (targetProperty && targetProperty.sham)) {
            }
            // add a flag to not completely full polyfills
            if (options.sham || (targetProperty && targetProperty.sham)) {

-             createNonEnumerableProperty(sourceProperty, 'sham', true);
+             createNonEnumerableProperty$a(sourceProperty, 'sham', true);

            }
            // extend global
            }
            // extend global

-           redefine(target, key, sourceProperty, options);
+           redefine$f(target, key, sourceProperty, options);

          }
        };
 
          }
        };
 

+       var $$16 = _export;
+

        // `Date.now` method
        // `Date.now` method

-       // https://tc39.github.io/ecma262/#sec-date.now
-       _export({ target: 'Date', stat: true }, {
+       // https://tc39.es/ecma262/#sec-date.now
+       $$16({ target: 'Date', stat: true }, {

          now: function now() {
            return new Date().getTime();
          }
        });
 
          now: function now() {
            return new Date().getTime();
          }
        });
 

-       var DatePrototype = Date.prototype;
+       var redefine$e = redefine$g.exports;
+
+       var DatePrototype$1 = Date.prototype;

        var INVALID_DATE = 'Invalid Date';
        var INVALID_DATE = 'Invalid Date';

-       var TO_STRING = 'toString';
-       var nativeDateToString = DatePrototype[TO_STRING];
-       var getTime = DatePrototype.getTime;
+       var TO_STRING$1 = 'toString';
+       var nativeDateToString = DatePrototype$1[TO_STRING$1];
+       var getTime$1 = DatePrototype$1.getTime;

 
        // `Date.prototype.toString` method
 
        // `Date.prototype.toString` method

-       // https://tc39.github.io/ecma262/#sec-date.prototype.tostring
+       // https://tc39.es/ecma262/#sec-date.prototype.tostring

        if (new Date(NaN) + '' != INVALID_DATE) {
        if (new Date(NaN) + '' != INVALID_DATE) {

-         redefine(DatePrototype, TO_STRING, function toString() {
-           var value = getTime.call(this);
-           // eslint-disable-next-line no-self-compare
+         redefine$e(DatePrototype$1, TO_STRING$1, function toString() {
+           var value = getTime$1.call(this);
+           // eslint-disable-next-line no-self-compare -- NaN check

            return value === value ? nativeDateToString.call(this) : INVALID_DATE;
          });
        }
 
            return value === value ? nativeDateToString.call(this) : INVALID_DATE;
          });
        }
 

-       var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
+       function _typeof(obj) {
+         "@babel/helpers - typeof";
+
+         if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
+           _typeof = function (obj) {
+             return typeof obj;
+           };
+         } else {
+           _typeof = function (obj) {
+             return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+           };
+         }
+
+         return _typeof(obj);
+       }
+
+       function _classCallCheck$1(instance, Constructor) {
+         if (!(instance instanceof Constructor)) {
+           throw new TypeError("Cannot call a class as a function");
+         }
+       }
+
+       function _defineProperties$1(target, props) {
+         for (var i = 0; i < props.length; i++) {
+           var descriptor = props[i];
+           descriptor.enumerable = descriptor.enumerable || false;
+           descriptor.configurable = true;
+           if ("value" in descriptor) descriptor.writable = true;
+           Object.defineProperty(target, descriptor.key, descriptor);
+         }
+       }
+
+       function _createClass$1(Constructor, protoProps, staticProps) {
+         if (protoProps) _defineProperties$1(Constructor.prototype, protoProps);
+         if (staticProps) _defineProperties$1(Constructor, staticProps);
+         return Constructor;
+       }
+
+       function _defineProperty(obj, key, value) {
+         if (key in obj) {
+           Object.defineProperty(obj, key, {
+             value: value,
+             enumerable: true,
+             configurable: true,
+             writable: true
+           });
+         } else {
+           obj[key] = value;
+         }
+
+         return obj;
+       }
+
+       function _slicedToArray(arr, i) {
+         return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
+       }
+
+       function _toConsumableArray(arr) {
+         return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
+       }
+
+       function _arrayWithoutHoles(arr) {
+         if (Array.isArray(arr)) return _arrayLikeToArray(arr);
+       }
+
+       function _arrayWithHoles(arr) {
+         if (Array.isArray(arr)) return arr;
+       }
+
+       function _iterableToArray(iter) {
+         if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
+       }
+
+       function _iterableToArrayLimit(arr, i) {
+         var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"];
+
+         if (_i == null) return;
+         var _arr = [];
+         var _n = true;
+         var _d = false;
+
+         var _s, _e;
+
+         try {
+           for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) {
+             _arr.push(_s.value);
+
+             if (i && _arr.length === i) break;
+           }
+         } catch (err) {
+           _d = true;
+           _e = err;
+         } finally {
+           try {
+             if (!_n && _i["return"] != null) _i["return"]();
+           } finally {
+             if (_d) throw _e;
+           }
+         }
+
+         return _arr;
+       }
+
+       function _unsupportedIterableToArray(o, minLen) {
+         if (!o) return;
+         if (typeof o === "string") return _arrayLikeToArray(o, minLen);
+         var n = Object.prototype.toString.call(o).slice(8, -1);
+         if (n === "Object" && o.constructor) n = o.constructor.name;
+         if (n === "Map" || n === "Set") return Array.from(o);
+         if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
+       }
+
+       function _arrayLikeToArray(arr, len) {
+         if (len == null || len > arr.length) len = arr.length;
+
+         for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+
+         return arr2;
+       }
+
+       function _nonIterableSpread() {
+         throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+       }
+
+       function _nonIterableRest() {
+         throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+       }
+
+       function _createForOfIteratorHelper(o, allowArrayLike) {
+         var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
+
+         if (!it) {
+           if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
+             if (it) o = it;
+             var i = 0;
+
+             var F = function () {};
+
+             return {
+               s: F,
+               n: function () {
+                 if (i >= o.length) return {
+                   done: true
+                 };
+                 return {
+                   done: false,
+                   value: o[i++]
+                 };
+               },
+               e: function (e) {
+                 throw e;
+               },
+               f: F
+             };
+           }
+
+           throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+         }
+
+         var normalCompletion = true,
+             didErr = false,
+             err;
+         return {
+           s: function () {
+             it = it.call(o);
+           },
+           n: function () {
+             var step = it.next();
+             normalCompletion = step.done;
+             return step;
+           },
+           e: function (e) {
+             didErr = true;
+             err = e;
+           },
+           f: function () {
+             try {
+               if (!normalCompletion && it.return != null) it.return();
+             } finally {
+               if (didErr) throw err;
+             }
+           }
+         };
+       }
+
+       var wellKnownSymbolWrapped = {};
+
+       var getBuiltIn$7 = getBuiltIn$9;
+
+       var engineUserAgent = getBuiltIn$7('navigator', 'userAgent') || '';
+
+       var global$v = global$F;
+       var userAgent$5 = engineUserAgent;
+
+       var process$4 = global$v.process;
+       var versions = process$4 && process$4.versions;
+       var v8 = versions && versions.v8;
+       var match, version$1;
+
+       if (v8) {
+         match = v8.split('.');
+         version$1 = match[0] < 4 ? 1 : match[0] + match[1];
+       } else if (userAgent$5) {
+         match = userAgent$5.match(/Edge\/(\d+)/);
+         if (!match || match[1] >= 74) {
+           match = userAgent$5.match(/Chrome\/(\d+)/);
+           if (match) version$1 = match[1];
+         }
+       }
+
+       var engineV8Version = version$1 && +version$1;
+
+       /* eslint-disable es/no-symbol -- required for testing */
+
+       var V8_VERSION$3 = engineV8Version;
+       var fails$I = fails$N;
+
+       // eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing
+       var nativeSymbol = !!Object.getOwnPropertySymbols && !fails$I(function () {
+         var symbol = Symbol();

          // Chrome 38 Symbol has incorrect toString conversion
          // Chrome 38 Symbol has incorrect toString conversion

-         // eslint-disable-next-line no-undef
-         return !String(Symbol());
+         // `get-own-property-symbols` polyfill symbols converted to object are not Symbol instances
+         return !String(symbol) || !(Object(symbol) instanceof Symbol) ||
+           // Chrome 38-40 symbols are not inherited from DOM collections prototypes to instances
+           !Symbol.sham && V8_VERSION$3 && V8_VERSION$3 < 41;

        });
 
        });
 

-       var useSymbolAsUid = nativeSymbol
-         // eslint-disable-next-line no-undef
+       /* eslint-disable es/no-symbol -- required for testing */
+
+       var NATIVE_SYMBOL$2 = nativeSymbol;
+
+       var useSymbolAsUid = NATIVE_SYMBOL$2

          && !Symbol.sham
          && !Symbol.sham

-         // eslint-disable-next-line no-undef

          && typeof Symbol.iterator == 'symbol';
 
          && typeof Symbol.iterator == 'symbol';
 

-       // `IsArray` abstract operation
-       // https://tc39.github.io/ecma262/#sec-isarray
-       var isArray = Array.isArray || function isArray(arg) {
-         return classofRaw(arg) == 'Array';
+       var global$u = global$F;
+       var shared$2 = shared$5.exports;
+       var has$d = has$j;
+       var uid$3 = uid$5;
+       var NATIVE_SYMBOL$1 = nativeSymbol;
+       var USE_SYMBOL_AS_UID$1 = useSymbolAsUid;
+
+       var WellKnownSymbolsStore$1 = shared$2('wks');
+       var Symbol$1 = global$u.Symbol;
+       var createWellKnownSymbol = USE_SYMBOL_AS_UID$1 ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid$3;
+
+       var wellKnownSymbol$s = function (name) {
+         if (!has$d(WellKnownSymbolsStore$1, name) || !(NATIVE_SYMBOL$1 || typeof WellKnownSymbolsStore$1[name] == 'string')) {
+           if (NATIVE_SYMBOL$1 && has$d(Symbol$1, name)) {
+             WellKnownSymbolsStore$1[name] = Symbol$1[name];
+           } else {
+             WellKnownSymbolsStore$1[name] = createWellKnownSymbol('Symbol.' + name);
+           }
+         } return WellKnownSymbolsStore$1[name];

        };
 
        };
 

-       // `ToObject` abstract operation
-       // https://tc39.github.io/ecma262/#sec-toobject
-       var toObject = function (argument) {
-         return Object(requireObjectCoercible(argument));
+       var wellKnownSymbol$r = wellKnownSymbol$s;
+
+       wellKnownSymbolWrapped.f = wellKnownSymbol$r;
+
+       var path = path$2;
+       var has$c = has$j;
+       var wrappedWellKnownSymbolModule$1 = wellKnownSymbolWrapped;
+       var defineProperty$a = objectDefineProperty.f;
+
+       var defineWellKnownSymbol$4 = function (NAME) {
+         var Symbol = path.Symbol || (path.Symbol = {});
+         if (!has$c(Symbol, NAME)) defineProperty$a(Symbol, NAME, {
+           value: wrappedWellKnownSymbolModule$1.f(NAME)
+         });

        };
 
        };
 

+       var defineWellKnownSymbol$3 = defineWellKnownSymbol$4;
+
+       // `Symbol.iterator` well-known symbol
+       // https://tc39.es/ecma262/#sec-symbol.iterator
+       defineWellKnownSymbol$3('iterator');
+
+       var internalObjectKeys = objectKeysInternal;
+       var enumBugKeys$1 = enumBugKeys$3;
+

        // `Object.keys` method
        // `Object.keys` method

-       // https://tc39.github.io/ecma262/#sec-object.keys
-       var objectKeys = Object.keys || function keys(O) {
-         return objectKeysInternal(O, enumBugKeys);
+       // https://tc39.es/ecma262/#sec-object.keys
+       // eslint-disable-next-line es/no-object-keys -- safe
+       var objectKeys$4 = Object.keys || function keys(O) {
+         return internalObjectKeys(O, enumBugKeys$1);

        };
 
        };
 

+       var DESCRIPTORS$i = descriptors;
+       var definePropertyModule$5 = objectDefineProperty;
+       var anObject$j = anObject$m;
+       var objectKeys$3 = objectKeys$4;
+

        // `Object.defineProperties` method
        // `Object.defineProperties` method

-       // https://tc39.github.io/ecma262/#sec-object.defineproperties
-       var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
-         anObject(O);
-         var keys = objectKeys(Properties);
+       // https://tc39.es/ecma262/#sec-object.defineproperties
+       // eslint-disable-next-line es/no-object-defineproperties -- safe
+       var objectDefineProperties = DESCRIPTORS$i ? Object.defineProperties : function defineProperties(O, Properties) {
+         anObject$j(O);
+         var keys = objectKeys$3(Properties);

          var length = keys.length;
          var index = 0;
          var key;
          var length = keys.length;
          var index = 0;
          var key;

-         while (length > index) objectDefineProperty.f(O, key = keys[index++], Properties[key]);
+         while (length > index) definePropertyModule$5.f(O, key = keys[index++], Properties[key]);

          return O;
        };
 
          return O;
        };
 

-       var html = getBuiltIn('document', 'documentElement');
+       var getBuiltIn$6 = getBuiltIn$9;
+
+       var html$2 = getBuiltIn$6('document', 'documentElement');
+
+       var anObject$i = anObject$m;
+       var defineProperties$2 = objectDefineProperties;
+       var enumBugKeys = enumBugKeys$3;
+       var hiddenKeys$2 = hiddenKeys$6;
+       var html$1 = html$2;
+       var documentCreateElement = documentCreateElement$1;
+       var sharedKey$2 = sharedKey$4;

 
        var GT = '>';
        var LT = '<';
 
        var GT = '>';
        var LT = '<';

-       var PROTOTYPE = 'prototype';
+       var PROTOTYPE$2 = 'prototype';

        var SCRIPT = 'script';
        var SCRIPT = 'script';

-       var IE_PROTO = sharedKey('IE_PROTO');
+       var IE_PROTO$1 = sharedKey$2('IE_PROTO');

 
        var EmptyConstructor = function () { /* empty */ };
 
 
        var EmptyConstructor = function () { /* empty */ };
 


@@ -632,7 +1007,7 @@
          var JS = 'java' + SCRIPT + ':';
          var iframeDocument;
          iframe.style.display = 'none';
          var JS = 'java' + SCRIPT + ':';
          var iframeDocument;
          iframe.style.display = 'none';

-         html.appendChild(iframe);
+         html$1.appendChild(iframe);

          // https://github.com/zloirock/core-js/issues/475
          iframe.src = String(JS);
          iframeDocument = iframe.contentWindow.document;
          // https://github.com/zloirock/core-js/issues/475
          iframe.src = String(JS);
          iframeDocument = iframe.contentWindow.document;


@@ -650,438 +1025,946 @@
        var activeXDocument;
        var NullProtoObject = function () {
          try {
        var activeXDocument;
        var NullProtoObject = function () {
          try {

-           /* global ActiveXObject */
+           /* global ActiveXObject -- old IE */

            activeXDocument = document.domain && new ActiveXObject('htmlfile');
          } catch (error) { /* ignore */ }
          NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
          var length = enumBugKeys.length;
            activeXDocument = document.domain && new ActiveXObject('htmlfile');
          } catch (error) { /* ignore */ }
          NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
          var length = enumBugKeys.length;

-         while (length--) delete NullProtoObject[PROTOTYPE][enumBugKeys[length]];
+         while (length--) delete NullProtoObject[PROTOTYPE$2][enumBugKeys[length]];

          return NullProtoObject();
        };
 
          return NullProtoObject();
        };
 

-       hiddenKeys[IE_PROTO] = true;
+       hiddenKeys$2[IE_PROTO$1] = true;

 
        // `Object.create` method
 
        // `Object.create` method

-       // https://tc39.github.io/ecma262/#sec-object.create
+       // https://tc39.es/ecma262/#sec-object.create

        var objectCreate = Object.create || function create(O, Properties) {
          var result;
          if (O !== null) {
        var objectCreate = Object.create || function create(O, Properties) {
          var result;
          if (O !== null) {

-           EmptyConstructor[PROTOTYPE] = anObject(O);
+           EmptyConstructor[PROTOTYPE$2] = anObject$i(O);

            result = new EmptyConstructor();
            result = new EmptyConstructor();

-           EmptyConstructor[PROTOTYPE] = null;
+           EmptyConstructor[PROTOTYPE$2] = null;

            // add "__proto__" for Object.getPrototypeOf polyfill
            // add "__proto__" for Object.getPrototypeOf polyfill

-           result[IE_PROTO] = O;
+           result[IE_PROTO$1] = O;

          } else result = NullProtoObject();
          } else result = NullProtoObject();

-         return Properties === undefined ? result : objectDefineProperties(result, Properties);
+         return Properties === undefined ? result : defineProperties$2(result, Properties);

        };
 
        };
 

-       var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;
-
-       var toString$1 = {}.toString;
+       var wellKnownSymbol$q = wellKnownSymbol$s;
+       var create$b = objectCreate;
+       var definePropertyModule$4 = objectDefineProperty;

 
 

-       var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
-         ? Object.getOwnPropertyNames(window) : [];
-
-       var getWindowNames = function (it) {
-         try {
-           return nativeGetOwnPropertyNames(it);
-         } catch (error) {
-           return windowNames.slice();
-         }
-       };
+       var UNSCOPABLES = wellKnownSymbol$q('unscopables');
+       var ArrayPrototype$1 = Array.prototype;

 
 

-       // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
-       var f$5 = function getOwnPropertyNames(it) {
-         return windowNames && toString$1.call(it) == '[object Window]'
-           ? getWindowNames(it)
-           : nativeGetOwnPropertyNames(toIndexedObject(it));
-       };
+       // Array.prototype[@@unscopables]
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       if (ArrayPrototype$1[UNSCOPABLES] == undefined) {
+         definePropertyModule$4.f(ArrayPrototype$1, UNSCOPABLES, {
+           configurable: true,
+           value: create$b(null)
+         });
+       }

 
 

-       var objectGetOwnPropertyNamesExternal = {
-               f: f$5
+       // add a key to Array.prototype[@@unscopables]
+       var addToUnscopables$5 = function (key) {
+         ArrayPrototype$1[UNSCOPABLES][key] = true;

        };
 
        };
 

-       var WellKnownSymbolsStore = shared('wks');
-       var Symbol$1 = global_1.Symbol;
-       var createWellKnownSymbol = useSymbolAsUid ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid;
+       var iterators = {};

 
 

-       var wellKnownSymbol = function (name) {
-         if (!has(WellKnownSymbolsStore, name)) {
-           if (nativeSymbol && has(Symbol$1, name)) WellKnownSymbolsStore[name] = Symbol$1[name];
-           else WellKnownSymbolsStore[name] = createWellKnownSymbol('Symbol.' + name);
-         } return WellKnownSymbolsStore[name];
-       };
+       var fails$H = fails$N;

 
 

-       var f$6 = wellKnownSymbol;
+       var correctPrototypeGetter = !fails$H(function () {
+         function F() { /* empty */ }
+         F.prototype.constructor = null;
+         // eslint-disable-next-line es/no-object-getprototypeof -- required for testing
+         return Object.getPrototypeOf(new F()) !== F.prototype;
+       });

 
 

-       var wellKnownSymbolWrapped = {
-               f: f$6
-       };
+       var has$b = has$j;
+       var toObject$g = toObject$i;
+       var sharedKey$1 = sharedKey$4;
+       var CORRECT_PROTOTYPE_GETTER$1 = correctPrototypeGetter;

 
 

-       var defineProperty = objectDefineProperty.f;
+       var IE_PROTO = sharedKey$1('IE_PROTO');
+       var ObjectPrototype$3 = Object.prototype;

 
 

-       var defineWellKnownSymbol = function (NAME) {
-         var Symbol = path.Symbol || (path.Symbol = {});
-         if (!has(Symbol, NAME)) defineProperty(Symbol, NAME, {
-           value: wellKnownSymbolWrapped.f(NAME)
-         });
+       // `Object.getPrototypeOf` method
+       // https://tc39.es/ecma262/#sec-object.getprototypeof
+       // eslint-disable-next-line es/no-object-getprototypeof -- safe
+       var objectGetPrototypeOf = CORRECT_PROTOTYPE_GETTER$1 ? Object.getPrototypeOf : function (O) {
+         O = toObject$g(O);
+         if (has$b(O, IE_PROTO)) return O[IE_PROTO];
+         if (typeof O.constructor == 'function' && O instanceof O.constructor) {
+           return O.constructor.prototype;
+         } return O instanceof Object ? ObjectPrototype$3 : null;

        };
 
        };
 

-       var defineProperty$1 = objectDefineProperty.f;
-
+       var fails$G = fails$N;
+       var getPrototypeOf$4 = objectGetPrototypeOf;
+       var createNonEnumerableProperty$9 = createNonEnumerableProperty$e;
+       var has$a = has$j;
+       var wellKnownSymbol$p = wellKnownSymbol$s;

 
 

+       var ITERATOR$8 = wellKnownSymbol$p('iterator');
+       var BUGGY_SAFARI_ITERATORS$1 = false;

 
 

-       var TO_STRING_TAG = wellKnownSymbol('toStringTag');
-
-       var setToStringTag = function (it, TAG, STATIC) {
-         if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
-           defineProperty$1(it, TO_STRING_TAG, { configurable: true, value: TAG });
-         }
-       };
+       var returnThis$2 = function () { return this; };

 
 

-       var aFunction$1 = function (it) {
-         if (typeof it != 'function') {
-           throw TypeError(String(it) + ' is not a function');
-         } return it;
-       };
+       // `%IteratorPrototype%` object
+       // https://tc39.es/ecma262/#sec-%iteratorprototype%-object
+       var IteratorPrototype$2, PrototypeOfArrayIteratorPrototype, arrayIterator;

 
 

-       // optional / simple context binding
-       var functionBindContext = function (fn, that, length) {
-         aFunction$1(fn);
-         if (that === undefined) return fn;
-         switch (length) {
-           case 0: return function () {
-             return fn.call(that);
-           };
-           case 1: return function (a) {
-             return fn.call(that, a);
-           };
-           case 2: return function (a, b) {
-             return fn.call(that, a, b);
-           };
-           case 3: return function (a, b, c) {
-             return fn.call(that, a, b, c);
-           };
+       /* eslint-disable es/no-array-prototype-keys -- safe */
+       if ([].keys) {
+         arrayIterator = [].keys();
+         // Safari 8 has buggy iterators w/o `next`
+         if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS$1 = true;
+         else {
+           PrototypeOfArrayIteratorPrototype = getPrototypeOf$4(getPrototypeOf$4(arrayIterator));
+           if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype$2 = PrototypeOfArrayIteratorPrototype;

          }
          }

-         return function (/* ...args */) {
-           return fn.apply(that, arguments);
-         };
-       };
-
-       var SPECIES = wellKnownSymbol('species');
+       }

 
 

-       // `ArraySpeciesCreate` abstract operation
-       // https://tc39.github.io/ecma262/#sec-arrayspeciescreate
-       var arraySpeciesCreate = function (originalArray, length) {
-         var C;
-         if (isArray(originalArray)) {
-           C = originalArray.constructor;
-           // cross-realm fallback
-           if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
-           else if (isObject(C)) {
-             C = C[SPECIES];
-             if (C === null) C = undefined;
-           }
-         } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
-       };
+       var NEW_ITERATOR_PROTOTYPE = IteratorPrototype$2 == undefined || fails$G(function () {
+         var test = {};
+         // FF44- legacy iterators case
+         return IteratorPrototype$2[ITERATOR$8].call(test) !== test;
+       });

 
 

-       var push = [].push;
+       if (NEW_ITERATOR_PROTOTYPE) IteratorPrototype$2 = {};

 
 

-       // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
-       var createMethod$1 = function (TYPE) {
-         var IS_MAP = TYPE == 1;
-         var IS_FILTER = TYPE == 2;
-         var IS_SOME = TYPE == 3;
-         var IS_EVERY = TYPE == 4;
-         var IS_FIND_INDEX = TYPE == 6;
-         var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
-         return function ($this, callbackfn, that, specificCreate) {
-           var O = toObject($this);
-           var self = indexedObject(O);
-           var boundFunction = functionBindContext(callbackfn, that, 3);
-           var length = toLength(self.length);
-           var index = 0;
-           var create = specificCreate || arraySpeciesCreate;
-           var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
-           var value, result;
-           for (;length > index; index++) if (NO_HOLES || index in self) {
-             value = self[index];
-             result = boundFunction(value, index, O);
-             if (TYPE) {
-               if (IS_MAP) target[index] = result; // map
-               else if (result) switch (TYPE) {
-                 case 3: return true;              // some
-                 case 5: return value;             // find
-                 case 6: return index;             // findIndex
-                 case 2: push.call(target, value); // filter
-               } else if (IS_EVERY) return false;  // every
-             }
-           }
-           return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
-         };
-       };
+       // `%IteratorPrototype%[@@iterator]()` method
+       // https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator
+       if (!has$a(IteratorPrototype$2, ITERATOR$8)) {
+         createNonEnumerableProperty$9(IteratorPrototype$2, ITERATOR$8, returnThis$2);
+       }

 
 

-       var arrayIteration = {
-         // `Array.prototype.forEach` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
-         forEach: createMethod$1(0),
-         // `Array.prototype.map` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.map
-         map: createMethod$1(1),
-         // `Array.prototype.filter` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.filter
-         filter: createMethod$1(2),
-         // `Array.prototype.some` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.some
-         some: createMethod$1(3),
-         // `Array.prototype.every` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.every
-         every: createMethod$1(4),
-         // `Array.prototype.find` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.find
-         find: createMethod$1(5),
-         // `Array.prototype.findIndex` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
-         findIndex: createMethod$1(6)
+       var iteratorsCore = {
+         IteratorPrototype: IteratorPrototype$2,
+         BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS$1

        };
 
        };
 

-       var $forEach = arrayIteration.forEach;
+       var defineProperty$9 = objectDefineProperty.f;
+       var has$9 = has$j;
+       var wellKnownSymbol$o = wellKnownSymbol$s;

 
 

-       var HIDDEN = sharedKey('hidden');
-       var SYMBOL = 'Symbol';
-       var PROTOTYPE$1 = 'prototype';
-       var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
-       var setInternalState = internalState.set;
-       var getInternalState = internalState.getterFor(SYMBOL);
-       var ObjectPrototype = Object[PROTOTYPE$1];
-       var $Symbol = global_1.Symbol;
-       var $stringify = getBuiltIn('JSON', 'stringify');
-       var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
-       var nativeDefineProperty$1 = objectDefineProperty.f;
-       var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
-       var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
-       var AllSymbols = shared('symbols');
-       var ObjectPrototypeSymbols = shared('op-symbols');
-       var StringToSymbolRegistry = shared('string-to-symbol-registry');
-       var SymbolToStringRegistry = shared('symbol-to-string-registry');
-       var WellKnownSymbolsStore$1 = shared('wks');
-       var QObject = global_1.QObject;
-       // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
-       var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;
+       var TO_STRING_TAG$4 = wellKnownSymbol$o('toStringTag');

 
 

-       // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
-       var setSymbolDescriptor = descriptors && fails(function () {
-         return objectCreate(nativeDefineProperty$1({}, 'a', {
-           get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
-         })).a != 7;
-       }) ? function (O, P, Attributes) {
-         var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$1(ObjectPrototype, P);
-         if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];
-         nativeDefineProperty$1(O, P, Attributes);
-         if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {
-           nativeDefineProperty$1(ObjectPrototype, P, ObjectPrototypeDescriptor);
+       var setToStringTag$a = function (it, TAG, STATIC) {
+         if (it && !has$9(it = STATIC ? it : it.prototype, TO_STRING_TAG$4)) {
+           defineProperty$9(it, TO_STRING_TAG$4, { configurable: true, value: TAG });

          }
          }

-       } : nativeDefineProperty$1;
-
-       var wrap = function (tag, description) {
-         var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
-         setInternalState(symbol, {
-           type: SYMBOL,
-           tag: tag,
-           description: description
-         });
-         if (!descriptors) symbol.description = description;
-         return symbol;
-       };
-
-       var isSymbol = useSymbolAsUid ? function (it) {
-         return typeof it == 'symbol';
-       } : function (it) {
-         return Object(it) instanceof $Symbol;

        };
 
        };
 

-       var $defineProperty = function defineProperty(O, P, Attributes) {
-         if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
-         anObject(O);
-         var key = toPrimitive(P, true);
-         anObject(Attributes);
-         if (has(AllSymbols, key)) {
-           if (!Attributes.enumerable) {
-             if (!has(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor(1, {}));
-             O[HIDDEN][key] = true;
-           } else {
-             if (has(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
-             Attributes = objectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });
-           } return setSymbolDescriptor(O, key, Attributes);
-         } return nativeDefineProperty$1(O, key, Attributes);
-       };
+       var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;
+       var create$a = objectCreate;
+       var createPropertyDescriptor$4 = createPropertyDescriptor$7;
+       var setToStringTag$9 = setToStringTag$a;
+       var Iterators$4 = iterators;

 
 

-       var $defineProperties = function defineProperties(O, Properties) {
-         anObject(O);
-         var properties = toIndexedObject(Properties);
-         var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
-         $forEach(keys, function (key) {
-           if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
-         });
-         return O;
-       };
+       var returnThis$1 = function () { return this; };

 
 

-       var $create = function create(O, Properties) {
-         return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
+       var createIteratorConstructor$2 = function (IteratorConstructor, NAME, next) {
+         var TO_STRING_TAG = NAME + ' Iterator';
+         IteratorConstructor.prototype = create$a(IteratorPrototype$1, { next: createPropertyDescriptor$4(1, next) });
+         setToStringTag$9(IteratorConstructor, TO_STRING_TAG, false);
+         Iterators$4[TO_STRING_TAG] = returnThis$1;
+         return IteratorConstructor;

        };
 
        };
 

-       var $propertyIsEnumerable = function propertyIsEnumerable(V) {
-         var P = toPrimitive(V, true);
-         var enumerable = nativePropertyIsEnumerable$1.call(this, P);
-         if (this === ObjectPrototype && has(AllSymbols, P) && !has(ObjectPrototypeSymbols, P)) return false;
-         return enumerable || !has(this, P) || !has(AllSymbols, P) || has(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
-       };
+       var isObject$m = isObject$r;

 
 

-       var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
-         var it = toIndexedObject(O);
-         var key = toPrimitive(P, true);
-         if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
-         var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
-         if (descriptor && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) {
-           descriptor.enumerable = true;
-         }
-         return descriptor;
+       var aPossiblePrototype$1 = function (it) {
+         if (!isObject$m(it) && it !== null) {
+           throw TypeError("Can't set " + String(it) + ' as a prototype');
+         } return it;

        };
 
        };
 

-       var $getOwnPropertyNames = function getOwnPropertyNames(O) {
-         var names = nativeGetOwnPropertyNames$1(toIndexedObject(O));
-         var result = [];
-         $forEach(names, function (key) {
-           if (!has(AllSymbols, key) && !has(hiddenKeys, key)) result.push(key);
-         });
-         return result;
-       };
+       /* eslint-disable no-proto -- safe */

 
 

-       var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
-         var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;
-         var names = nativeGetOwnPropertyNames$1(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
-         var result = [];
-         $forEach(names, function (key) {
-           if (has(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has(ObjectPrototype, key))) {
-             result.push(AllSymbols[key]);
-           }
-         });
-         return result;
-       };
+       var anObject$h = anObject$m;
+       var aPossiblePrototype = aPossiblePrototype$1;

 
 

-       // `Symbol` constructor
-       // https://tc39.github.io/ecma262/#sec-symbol-constructor
-       if (!nativeSymbol) {
-         $Symbol = function Symbol() {
-           if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
-           var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
-           var tag = uid(description);
-           var setter = function (value) {
-             if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
-             if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
-             setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
-           };
-           if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });
-           return wrap(tag, description);
+       // `Object.setPrototypeOf` method
+       // https://tc39.es/ecma262/#sec-object.setprototypeof
+       // Works with __proto__ only. Old v8 can't work with null proto objects.
+       // eslint-disable-next-line es/no-object-setprototypeof -- safe
+       var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () {
+         var CORRECT_SETTER = false;
+         var test = {};
+         var setter;
+         try {
+           // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+           setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
+           setter.call(test, []);
+           CORRECT_SETTER = test instanceof Array;
+         } catch (error) { /* empty */ }
+         return function setPrototypeOf(O, proto) {
+           anObject$h(O);
+           aPossiblePrototype(proto);
+           if (CORRECT_SETTER) setter.call(O, proto);
+           else O.__proto__ = proto;
+           return O;

          };
          };

+       }() : undefined);

 
 

-         redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
-           return getInternalState(this).tag;
-         });
+       var $$15 = _export;
+       var createIteratorConstructor$1 = createIteratorConstructor$2;
+       var getPrototypeOf$3 = objectGetPrototypeOf;
+       var setPrototypeOf$6 = objectSetPrototypeOf;
+       var setToStringTag$8 = setToStringTag$a;
+       var createNonEnumerableProperty$8 = createNonEnumerableProperty$e;
+       var redefine$d = redefine$g.exports;
+       var wellKnownSymbol$n = wellKnownSymbol$s;
+       var Iterators$3 = iterators;
+       var IteratorsCore = iteratorsCore;
+
+       var IteratorPrototype = IteratorsCore.IteratorPrototype;
+       var BUGGY_SAFARI_ITERATORS = IteratorsCore.BUGGY_SAFARI_ITERATORS;
+       var ITERATOR$7 = wellKnownSymbol$n('iterator');
+       var KEYS = 'keys';
+       var VALUES = 'values';
+       var ENTRIES = 'entries';

 
 

-         redefine($Symbol, 'withoutSetter', function (description) {
-           return wrap(uid(description), description);
-         });
+       var returnThis = function () { return this; };

 
 

-         objectPropertyIsEnumerable.f = $propertyIsEnumerable;
-         objectDefineProperty.f = $defineProperty;
-         objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
-         objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
-         objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;
+       var defineIterator$3 = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
+         createIteratorConstructor$1(IteratorConstructor, NAME, next);

 
 

-         wellKnownSymbolWrapped.f = function (name) {
-           return wrap(wellKnownSymbol(name), name);
+         var getIterationMethod = function (KIND) {
+           if (KIND === DEFAULT && defaultIterator) return defaultIterator;
+           if (!BUGGY_SAFARI_ITERATORS && KIND in IterablePrototype) return IterablePrototype[KIND];
+           switch (KIND) {
+             case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
+             case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
+             case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
+           } return function () { return new IteratorConstructor(this); };

          };
 
          };
 

-         if (descriptors) {
-           // https://github.com/tc39/proposal-Symbol-description
-           nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
-             configurable: true,
-             get: function description() {
-               return getInternalState(this).description;
-             }
-           });
+         var TO_STRING_TAG = NAME + ' Iterator';
+         var INCORRECT_VALUES_NAME = false;
+         var IterablePrototype = Iterable.prototype;
+         var nativeIterator = IterablePrototype[ITERATOR$7]
+           || IterablePrototype['@@iterator']
+           || DEFAULT && IterablePrototype[DEFAULT];
+         var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);
+         var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
+         var CurrentIteratorPrototype, methods, KEY;
+
+         // fix native
+         if (anyNativeIterator) {
+           CurrentIteratorPrototype = getPrototypeOf$3(anyNativeIterator.call(new Iterable()));
+           if (IteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {
+             if (getPrototypeOf$3(CurrentIteratorPrototype) !== IteratorPrototype) {
+               if (setPrototypeOf$6) {
+                 setPrototypeOf$6(CurrentIteratorPrototype, IteratorPrototype);
+               } else if (typeof CurrentIteratorPrototype[ITERATOR$7] != 'function') {
+                 createNonEnumerableProperty$8(CurrentIteratorPrototype, ITERATOR$7, returnThis);
+               }
+             }
+             // Set @@toStringTag to native iterators
+             setToStringTag$8(CurrentIteratorPrototype, TO_STRING_TAG, true);
+           }
+         }
+
+         // fix Array.prototype.{ values, @@iterator }.name in V8 / FF
+         if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
+           INCORRECT_VALUES_NAME = true;
+           defaultIterator = function values() { return nativeIterator.call(this); };
+         }
+
+         // define iterator
+         if (IterablePrototype[ITERATOR$7] !== defaultIterator) {
+           createNonEnumerableProperty$8(IterablePrototype, ITERATOR$7, defaultIterator);
+         }
+         Iterators$3[NAME] = defaultIterator;
+
+         // export additional methods
+         if (DEFAULT) {
+           methods = {
+             values: getIterationMethod(VALUES),
+             keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
+             entries: getIterationMethod(ENTRIES)
+           };
+           if (FORCED) for (KEY in methods) {
+             if (BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
+               redefine$d(IterablePrototype, KEY, methods[KEY]);
+             }
+           } else $$15({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);
+         }
+
+         return methods;
+       };
+
+       var toIndexedObject$7 = toIndexedObject$b;
+       var addToUnscopables$4 = addToUnscopables$5;
+       var Iterators$2 = iterators;
+       var InternalStateModule$8 = internalState;
+       var defineIterator$2 = defineIterator$3;
+
+       var ARRAY_ITERATOR = 'Array Iterator';
+       var setInternalState$8 = InternalStateModule$8.set;
+       var getInternalState$6 = InternalStateModule$8.getterFor(ARRAY_ITERATOR);
+
+       // `Array.prototype.entries` method
+       // https://tc39.es/ecma262/#sec-array.prototype.entries
+       // `Array.prototype.keys` method
+       // https://tc39.es/ecma262/#sec-array.prototype.keys
+       // `Array.prototype.values` method
+       // https://tc39.es/ecma262/#sec-array.prototype.values
+       // `Array.prototype[@@iterator]` method
+       // https://tc39.es/ecma262/#sec-array.prototype-@@iterator
+       // `CreateArrayIterator` internal method
+       // https://tc39.es/ecma262/#sec-createarrayiterator
+       var es_array_iterator = defineIterator$2(Array, 'Array', function (iterated, kind) {
+         setInternalState$8(this, {
+           type: ARRAY_ITERATOR,
+           target: toIndexedObject$7(iterated), // target
+           index: 0,                          // next index
+           kind: kind                         // kind
+         });
+       // `%ArrayIteratorPrototype%.next` method
+       // https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next
+       }, function () {
+         var state = getInternalState$6(this);
+         var target = state.target;
+         var kind = state.kind;
+         var index = state.index++;
+         if (!target || index >= target.length) {
+           state.target = undefined;
+           return { value: undefined, done: true };
+         }
+         if (kind == 'keys') return { value: index, done: false };
+         if (kind == 'values') return { value: target[index], done: false };
+         return { value: [index, target[index]], done: false };
+       }, 'values');
+
+       // argumentsList[@@iterator] is %ArrayProto_values%
+       // https://tc39.es/ecma262/#sec-createunmappedargumentsobject
+       // https://tc39.es/ecma262/#sec-createmappedargumentsobject
+       Iterators$2.Arguments = Iterators$2.Array;
+
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables$4('keys');
+       addToUnscopables$4('values');
+       addToUnscopables$4('entries');
+
+       var wellKnownSymbol$m = wellKnownSymbol$s;
+
+       var TO_STRING_TAG$3 = wellKnownSymbol$m('toStringTag');
+       var test$2 = {};
+
+       test$2[TO_STRING_TAG$3] = 'z';
+
+       var toStringTagSupport = String(test$2) === '[object z]';
+
+       var TO_STRING_TAG_SUPPORT$2 = toStringTagSupport;
+       var classofRaw = classofRaw$1;
+       var wellKnownSymbol$l = wellKnownSymbol$s;
+
+       var TO_STRING_TAG$2 = wellKnownSymbol$l('toStringTag');
+       // ES3 wrong here
+       var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
+
+       // fallback for IE11 Script Access Denied error
+       var tryGet = function (it, key) {
+         try {
+           return it[key];
+         } catch (error) { /* empty */ }
+       };
+
+       // getting tag from ES6+ `Object.prototype.toString`
+       var classof$b = TO_STRING_TAG_SUPPORT$2 ? classofRaw : function (it) {
+         var O, tag, result;
+         return it === undefined ? 'Undefined' : it === null ? 'Null'
+           // @@toStringTag case
+           : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG$2)) == 'string' ? tag
+           // builtinTag case
+           : CORRECT_ARGUMENTS ? classofRaw(O)
+           // ES3 arguments fallback
+           : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
+       };
+
+       var TO_STRING_TAG_SUPPORT$1 = toStringTagSupport;
+       var classof$a = classof$b;
+
+       // `Object.prototype.toString` method implementation
+       // https://tc39.es/ecma262/#sec-object.prototype.tostring
+       var objectToString$1 = TO_STRING_TAG_SUPPORT$1 ? {}.toString : function toString() {
+         return '[object ' + classof$a(this) + ']';
+       };
+
+       var TO_STRING_TAG_SUPPORT = toStringTagSupport;
+       var redefine$c = redefine$g.exports;
+       var toString$1 = objectToString$1;
+
+       // `Object.prototype.toString` method
+       // https://tc39.es/ecma262/#sec-object.prototype.tostring
+       if (!TO_STRING_TAG_SUPPORT) {
+         redefine$c(Object.prototype, 'toString', toString$1, { unsafe: true });
+       }
+
+       var toInteger$8 = toInteger$b;
+       var requireObjectCoercible$b = requireObjectCoercible$e;
+
+       // `String.prototype.{ codePointAt, at }` methods implementation
+       var createMethod$5 = function (CONVERT_TO_STRING) {
+         return function ($this, pos) {
+           var S = String(requireObjectCoercible$b($this));
+           var position = toInteger$8(pos);
+           var size = S.length;
+           var first, second;
+           if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
+           first = S.charCodeAt(position);
+           return first < 0xD800 || first > 0xDBFF || position + 1 === size
+             || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF
+               ? CONVERT_TO_STRING ? S.charAt(position) : first
+               : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
+         };
+       };
+
+       var stringMultibyte = {
+         // `String.prototype.codePointAt` method
+         // https://tc39.es/ecma262/#sec-string.prototype.codepointat
+         codeAt: createMethod$5(false),
+         // `String.prototype.at` method
+         // https://github.com/mathiasbynens/String.prototype.at
+         charAt: createMethod$5(true)
+       };
+
+       var charAt$1 = stringMultibyte.charAt;
+       var InternalStateModule$7 = internalState;
+       var defineIterator$1 = defineIterator$3;
+
+       var STRING_ITERATOR = 'String Iterator';
+       var setInternalState$7 = InternalStateModule$7.set;
+       var getInternalState$5 = InternalStateModule$7.getterFor(STRING_ITERATOR);
+
+       // `String.prototype[@@iterator]` method
+       // https://tc39.es/ecma262/#sec-string.prototype-@@iterator
+       defineIterator$1(String, 'String', function (iterated) {
+         setInternalState$7(this, {
+           type: STRING_ITERATOR,
+           string: String(iterated),
+           index: 0
+         });
+       // `%StringIteratorPrototype%.next` method
+       // https://tc39.es/ecma262/#sec-%stringiteratorprototype%.next
+       }, function next() {
+         var state = getInternalState$5(this);
+         var string = state.string;
+         var index = state.index;
+         var point;
+         if (index >= string.length) return { value: undefined, done: true };
+         point = charAt$1(string, index);
+         state.index += point.length;
+         return { value: point, done: false };
+       });
+
+       // iterable DOM collections
+       // flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods
+       var domIterables = {
+         CSSRuleList: 0,
+         CSSStyleDeclaration: 0,
+         CSSValueList: 0,
+         ClientRectList: 0,
+         DOMRectList: 0,
+         DOMStringList: 0,
+         DOMTokenList: 1,
+         DataTransferItemList: 0,
+         FileList: 0,
+         HTMLAllCollection: 0,
+         HTMLCollection: 0,
+         HTMLFormElement: 0,
+         HTMLSelectElement: 0,
+         MediaList: 0,
+         MimeTypeArray: 0,
+         NamedNodeMap: 0,
+         NodeList: 1,
+         PaintRequestList: 0,
+         Plugin: 0,
+         PluginArray: 0,
+         SVGLengthList: 0,
+         SVGNumberList: 0,
+         SVGPathSegList: 0,
+         SVGPointList: 0,
+         SVGStringList: 0,
+         SVGTransformList: 0,
+         SourceBufferList: 0,
+         StyleSheetList: 0,
+         TextTrackCueList: 0,
+         TextTrackList: 0,
+         TouchList: 0
+       };
+
+       var global$t = global$F;
+       var DOMIterables$1 = domIterables;
+       var ArrayIteratorMethods = es_array_iterator;
+       var createNonEnumerableProperty$7 = createNonEnumerableProperty$e;
+       var wellKnownSymbol$k = wellKnownSymbol$s;
+
+       var ITERATOR$6 = wellKnownSymbol$k('iterator');
+       var TO_STRING_TAG$1 = wellKnownSymbol$k('toStringTag');
+       var ArrayValues = ArrayIteratorMethods.values;
+
+       for (var COLLECTION_NAME$1 in DOMIterables$1) {
+         var Collection$1 = global$t[COLLECTION_NAME$1];
+         var CollectionPrototype$1 = Collection$1 && Collection$1.prototype;
+         if (CollectionPrototype$1) {
+           // some Chrome versions have non-configurable methods on DOMTokenList
+           if (CollectionPrototype$1[ITERATOR$6] !== ArrayValues) try {
+             createNonEnumerableProperty$7(CollectionPrototype$1, ITERATOR$6, ArrayValues);
+           } catch (error) {
+             CollectionPrototype$1[ITERATOR$6] = ArrayValues;
+           }
+           if (!CollectionPrototype$1[TO_STRING_TAG$1]) {
+             createNonEnumerableProperty$7(CollectionPrototype$1, TO_STRING_TAG$1, COLLECTION_NAME$1);
+           }
+           if (DOMIterables$1[COLLECTION_NAME$1]) for (var METHOD_NAME in ArrayIteratorMethods) {
+             // some Chrome versions have non-configurable methods on DOMTokenList
+             if (CollectionPrototype$1[METHOD_NAME] !== ArrayIteratorMethods[METHOD_NAME]) try {
+               createNonEnumerableProperty$7(CollectionPrototype$1, METHOD_NAME, ArrayIteratorMethods[METHOD_NAME]);
+             } catch (error) {
+               CollectionPrototype$1[METHOD_NAME] = ArrayIteratorMethods[METHOD_NAME];
+             }
+           }
+         }
+       }
+
+       var classof$9 = classofRaw$1;
+
+       // `IsArray` abstract operation
+       // https://tc39.es/ecma262/#sec-isarray
+       // eslint-disable-next-line es/no-array-isarray -- safe
+       var isArray$6 = Array.isArray || function isArray(arg) {
+         return classof$9(arg) == 'Array';
+       };
+
+       var objectGetOwnPropertyNamesExternal = {};
+
+       /* eslint-disable es/no-object-getownpropertynames -- safe */
+
+       var toIndexedObject$6 = toIndexedObject$b;
+       var $getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;
+
+       var toString = {}.toString;
+
+       var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
+         ? Object.getOwnPropertyNames(window) : [];
+
+       var getWindowNames = function (it) {
+         try {
+           return $getOwnPropertyNames$1(it);
+         } catch (error) {
+           return windowNames.slice();
+         }
+       };
+
+       // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
+       objectGetOwnPropertyNamesExternal.f = function getOwnPropertyNames(it) {
+         return windowNames && toString.call(it) == '[object Window]'
+           ? getWindowNames(it)
+           : $getOwnPropertyNames$1(toIndexedObject$6(it));
+       };
+
+       var aFunction$9 = function (it) {
+         if (typeof it != 'function') {
+           throw TypeError(String(it) + ' is not a function');
+         } return it;
+       };
+
+       var aFunction$8 = aFunction$9;
+
+       // optional / simple context binding
+       var functionBindContext = function (fn, that, length) {
+         aFunction$8(fn);
+         if (that === undefined) return fn;
+         switch (length) {
+           case 0: return function () {
+             return fn.call(that);
+           };
+           case 1: return function (a) {
+             return fn.call(that, a);
+           };
+           case 2: return function (a, b) {
+             return fn.call(that, a, b);
+           };
+           case 3: return function (a, b, c) {
+             return fn.call(that, a, b, c);
+           };
+         }
+         return function (/* ...args */) {
+           return fn.apply(that, arguments);
+         };
+       };
+
+       var isObject$l = isObject$r;
+       var isArray$5 = isArray$6;
+       var wellKnownSymbol$j = wellKnownSymbol$s;
+
+       var SPECIES$6 = wellKnownSymbol$j('species');
+
+       // `ArraySpeciesCreate` abstract operation
+       // https://tc39.es/ecma262/#sec-arrayspeciescreate
+       var arraySpeciesCreate$3 = function (originalArray, length) {
+         var C;
+         if (isArray$5(originalArray)) {
+           C = originalArray.constructor;
+           // cross-realm fallback
+           if (typeof C == 'function' && (C === Array || isArray$5(C.prototype))) C = undefined;
+           else if (isObject$l(C)) {
+             C = C[SPECIES$6];
+             if (C === null) C = undefined;
+           }
+         } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
+       };
+
+       var bind$b = functionBindContext;
+       var IndexedObject$3 = indexedObject;
+       var toObject$f = toObject$i;
+       var toLength$o = toLength$q;
+       var arraySpeciesCreate$2 = arraySpeciesCreate$3;
+
+       var push = [].push;
+
+       // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterOut }` methods implementation
+       var createMethod$4 = function (TYPE) {
+         var IS_MAP = TYPE == 1;
+         var IS_FILTER = TYPE == 2;
+         var IS_SOME = TYPE == 3;
+         var IS_EVERY = TYPE == 4;
+         var IS_FIND_INDEX = TYPE == 6;
+         var IS_FILTER_OUT = TYPE == 7;
+         var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
+         return function ($this, callbackfn, that, specificCreate) {
+           var O = toObject$f($this);
+           var self = IndexedObject$3(O);
+           var boundFunction = bind$b(callbackfn, that, 3);
+           var length = toLength$o(self.length);
+           var index = 0;
+           var create = specificCreate || arraySpeciesCreate$2;
+           var target = IS_MAP ? create($this, length) : IS_FILTER || IS_FILTER_OUT ? create($this, 0) : undefined;
+           var value, result;
+           for (;length > index; index++) if (NO_HOLES || index in self) {
+             value = self[index];
+             result = boundFunction(value, index, O);
+             if (TYPE) {
+               if (IS_MAP) target[index] = result; // map
+               else if (result) switch (TYPE) {
+                 case 3: return true;              // some
+                 case 5: return value;             // find
+                 case 6: return index;             // findIndex
+                 case 2: push.call(target, value); // filter
+               } else switch (TYPE) {
+                 case 4: return false;             // every
+                 case 7: push.call(target, value); // filterOut
+               }
+             }
+           }
+           return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
+         };
+       };
+
+       var arrayIteration = {
+         // `Array.prototype.forEach` method
+         // https://tc39.es/ecma262/#sec-array.prototype.foreach
+         forEach: createMethod$4(0),
+         // `Array.prototype.map` method
+         // https://tc39.es/ecma262/#sec-array.prototype.map
+         map: createMethod$4(1),
+         // `Array.prototype.filter` method
+         // https://tc39.es/ecma262/#sec-array.prototype.filter
+         filter: createMethod$4(2),
+         // `Array.prototype.some` method
+         // https://tc39.es/ecma262/#sec-array.prototype.some
+         some: createMethod$4(3),
+         // `Array.prototype.every` method
+         // https://tc39.es/ecma262/#sec-array.prototype.every
+         every: createMethod$4(4),
+         // `Array.prototype.find` method
+         // https://tc39.es/ecma262/#sec-array.prototype.find
+         find: createMethod$4(5),
+         // `Array.prototype.findIndex` method
+         // https://tc39.es/ecma262/#sec-array.prototype.findIndex
+         findIndex: createMethod$4(6),
+         // `Array.prototype.filterOut` method
+         // https://github.com/tc39/proposal-array-filtering
+         filterOut: createMethod$4(7)
+       };
+
+       var $$14 = _export;
+       var global$s = global$F;
+       var getBuiltIn$5 = getBuiltIn$9;
+       var DESCRIPTORS$h = descriptors;
+       var NATIVE_SYMBOL = nativeSymbol;
+       var USE_SYMBOL_AS_UID = useSymbolAsUid;
+       var fails$F = fails$N;
+       var has$8 = has$j;
+       var isArray$4 = isArray$6;
+       var isObject$k = isObject$r;
+       var anObject$g = anObject$m;
+       var toObject$e = toObject$i;
+       var toIndexedObject$5 = toIndexedObject$b;
+       var toPrimitive$4 = toPrimitive$7;
+       var createPropertyDescriptor$3 = createPropertyDescriptor$7;
+       var nativeObjectCreate = objectCreate;
+       var objectKeys$2 = objectKeys$4;
+       var getOwnPropertyNamesModule = objectGetOwnPropertyNames;
+       var getOwnPropertyNamesExternal = objectGetOwnPropertyNamesExternal;
+       var getOwnPropertySymbolsModule$1 = objectGetOwnPropertySymbols;
+       var getOwnPropertyDescriptorModule$2 = objectGetOwnPropertyDescriptor;
+       var definePropertyModule$3 = objectDefineProperty;
+       var propertyIsEnumerableModule$1 = objectPropertyIsEnumerable;
+       var createNonEnumerableProperty$6 = createNonEnumerableProperty$e;
+       var redefine$b = redefine$g.exports;
+       var shared$1 = shared$5.exports;
+       var sharedKey = sharedKey$4;
+       var hiddenKeys$1 = hiddenKeys$6;
+       var uid$2 = uid$5;
+       var wellKnownSymbol$i = wellKnownSymbol$s;
+       var wrappedWellKnownSymbolModule = wellKnownSymbolWrapped;
+       var defineWellKnownSymbol$2 = defineWellKnownSymbol$4;
+       var setToStringTag$7 = setToStringTag$a;
+       var InternalStateModule$6 = internalState;
+       var $forEach$2 = arrayIteration.forEach;
+
+       var HIDDEN = sharedKey('hidden');
+       var SYMBOL = 'Symbol';
+       var PROTOTYPE$1 = 'prototype';
+       var TO_PRIMITIVE = wellKnownSymbol$i('toPrimitive');
+       var setInternalState$6 = InternalStateModule$6.set;
+       var getInternalState$4 = InternalStateModule$6.getterFor(SYMBOL);
+       var ObjectPrototype$2 = Object[PROTOTYPE$1];
+       var $Symbol = global$s.Symbol;
+       var $stringify = getBuiltIn$5('JSON', 'stringify');
+       var nativeGetOwnPropertyDescriptor$2 = getOwnPropertyDescriptorModule$2.f;
+       var nativeDefineProperty$1 = definePropertyModule$3.f;
+       var nativeGetOwnPropertyNames = getOwnPropertyNamesExternal.f;
+       var nativePropertyIsEnumerable = propertyIsEnumerableModule$1.f;
+       var AllSymbols = shared$1('symbols');
+       var ObjectPrototypeSymbols = shared$1('op-symbols');
+       var StringToSymbolRegistry = shared$1('string-to-symbol-registry');
+       var SymbolToStringRegistry = shared$1('symbol-to-string-registry');
+       var WellKnownSymbolsStore = shared$1('wks');
+       var QObject = global$s.QObject;
+       // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
+       var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;
+
+       // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
+       var setSymbolDescriptor = DESCRIPTORS$h && fails$F(function () {
+         return nativeObjectCreate(nativeDefineProperty$1({}, 'a', {
+           get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
+         })).a != 7;
+       }) ? function (O, P, Attributes) {
+         var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$2(ObjectPrototype$2, P);
+         if (ObjectPrototypeDescriptor) delete ObjectPrototype$2[P];
+         nativeDefineProperty$1(O, P, Attributes);
+         if (ObjectPrototypeDescriptor && O !== ObjectPrototype$2) {
+           nativeDefineProperty$1(ObjectPrototype$2, P, ObjectPrototypeDescriptor);
+         }
+       } : nativeDefineProperty$1;
+
+       var wrap$2 = function (tag, description) {
+         var symbol = AllSymbols[tag] = nativeObjectCreate($Symbol[PROTOTYPE$1]);
+         setInternalState$6(symbol, {
+           type: SYMBOL,
+           tag: tag,
+           description: description
+         });
+         if (!DESCRIPTORS$h) symbol.description = description;
+         return symbol;
+       };
+
+       var isSymbol$1 = USE_SYMBOL_AS_UID ? function (it) {
+         return typeof it == 'symbol';
+       } : function (it) {
+         return Object(it) instanceof $Symbol;
+       };
+
+       var $defineProperty = function defineProperty(O, P, Attributes) {
+         if (O === ObjectPrototype$2) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
+         anObject$g(O);
+         var key = toPrimitive$4(P, true);
+         anObject$g(Attributes);
+         if (has$8(AllSymbols, key)) {
+           if (!Attributes.enumerable) {
+             if (!has$8(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor$3(1, {}));
+             O[HIDDEN][key] = true;
+           } else {
+             if (has$8(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
+             Attributes = nativeObjectCreate(Attributes, { enumerable: createPropertyDescriptor$3(0, false) });
+           } return setSymbolDescriptor(O, key, Attributes);
+         } return nativeDefineProperty$1(O, key, Attributes);
+       };
+
+       var $defineProperties = function defineProperties(O, Properties) {
+         anObject$g(O);
+         var properties = toIndexedObject$5(Properties);
+         var keys = objectKeys$2(properties).concat($getOwnPropertySymbols(properties));
+         $forEach$2(keys, function (key) {
+           if (!DESCRIPTORS$h || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
+         });
+         return O;
+       };
+
+       var $create = function create(O, Properties) {
+         return Properties === undefined ? nativeObjectCreate(O) : $defineProperties(nativeObjectCreate(O), Properties);
+       };
+
+       var $propertyIsEnumerable = function propertyIsEnumerable(V) {
+         var P = toPrimitive$4(V, true);
+         var enumerable = nativePropertyIsEnumerable.call(this, P);
+         if (this === ObjectPrototype$2 && has$8(AllSymbols, P) && !has$8(ObjectPrototypeSymbols, P)) return false;
+         return enumerable || !has$8(this, P) || !has$8(AllSymbols, P) || has$8(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
+       };
+
+       var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
+         var it = toIndexedObject$5(O);
+         var key = toPrimitive$4(P, true);
+         if (it === ObjectPrototype$2 && has$8(AllSymbols, key) && !has$8(ObjectPrototypeSymbols, key)) return;
+         var descriptor = nativeGetOwnPropertyDescriptor$2(it, key);
+         if (descriptor && has$8(AllSymbols, key) && !(has$8(it, HIDDEN) && it[HIDDEN][key])) {
+           descriptor.enumerable = true;
+         }
+         return descriptor;
+       };
+
+       var $getOwnPropertyNames = function getOwnPropertyNames(O) {
+         var names = nativeGetOwnPropertyNames(toIndexedObject$5(O));
+         var result = [];
+         $forEach$2(names, function (key) {
+           if (!has$8(AllSymbols, key) && !has$8(hiddenKeys$1, key)) result.push(key);
+         });
+         return result;
+       };
+
+       var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
+         var IS_OBJECT_PROTOTYPE = O === ObjectPrototype$2;
+         var names = nativeGetOwnPropertyNames(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject$5(O));
+         var result = [];
+         $forEach$2(names, function (key) {
+           if (has$8(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has$8(ObjectPrototype$2, key))) {
+             result.push(AllSymbols[key]);
+           }
+         });
+         return result;
+       };
+
+       // `Symbol` constructor
+       // https://tc39.es/ecma262/#sec-symbol-constructor
+       if (!NATIVE_SYMBOL) {
+         $Symbol = function Symbol() {
+           if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
+           var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
+           var tag = uid$2(description);
+           var setter = function (value) {
+             if (this === ObjectPrototype$2) setter.call(ObjectPrototypeSymbols, value);
+             if (has$8(this, HIDDEN) && has$8(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
+             setSymbolDescriptor(this, tag, createPropertyDescriptor$3(1, value));
+           };
+           if (DESCRIPTORS$h && USE_SETTER) setSymbolDescriptor(ObjectPrototype$2, tag, { configurable: true, set: setter });
+           return wrap$2(tag, description);
+         };
+
+         redefine$b($Symbol[PROTOTYPE$1], 'toString', function toString() {
+           return getInternalState$4(this).tag;
+         });
+
+         redefine$b($Symbol, 'withoutSetter', function (description) {
+           return wrap$2(uid$2(description), description);
+         });
+
+         propertyIsEnumerableModule$1.f = $propertyIsEnumerable;
+         definePropertyModule$3.f = $defineProperty;
+         getOwnPropertyDescriptorModule$2.f = $getOwnPropertyDescriptor;
+         getOwnPropertyNamesModule.f = getOwnPropertyNamesExternal.f = $getOwnPropertyNames;
+         getOwnPropertySymbolsModule$1.f = $getOwnPropertySymbols;
+
+         wrappedWellKnownSymbolModule.f = function (name) {
+           return wrap$2(wellKnownSymbol$i(name), name);
+         };
+
+         if (DESCRIPTORS$h) {
+           // https://github.com/tc39/proposal-Symbol-description
+           nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
+             configurable: true,
+             get: function description() {
+               return getInternalState$4(this).description;
+             }
+           });

            {
            {

-             redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
+             redefine$b(ObjectPrototype$2, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });

            }
          }
        }
 
            }
          }
        }
 

-       _export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, {
+       $$14({ global: true, wrap: true, forced: !NATIVE_SYMBOL, sham: !NATIVE_SYMBOL }, {

          Symbol: $Symbol
        });
 
          Symbol: $Symbol
        });
 

-       $forEach(objectKeys(WellKnownSymbolsStore$1), function (name) {
-         defineWellKnownSymbol(name);
+       $forEach$2(objectKeys$2(WellKnownSymbolsStore), function (name) {
+         defineWellKnownSymbol$2(name);

        });
 
        });
 

-       _export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
+       $$14({ target: SYMBOL, stat: true, forced: !NATIVE_SYMBOL }, {

          // `Symbol.for` method
          // `Symbol.for` method

-         // https://tc39.github.io/ecma262/#sec-symbol.for
+         // https://tc39.es/ecma262/#sec-symbol.for

          'for': function (key) {
            var string = String(key);
          'for': function (key) {
            var string = String(key);

-           if (has(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
+           if (has$8(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];

            var symbol = $Symbol(string);
            StringToSymbolRegistry[string] = symbol;
            SymbolToStringRegistry[symbol] = string;
            return symbol;
          },
          // `Symbol.keyFor` method
            var symbol = $Symbol(string);
            StringToSymbolRegistry[string] = symbol;
            SymbolToStringRegistry[symbol] = string;
            return symbol;
          },
          // `Symbol.keyFor` method

-         // https://tc39.github.io/ecma262/#sec-symbol.keyfor
+         // https://tc39.es/ecma262/#sec-symbol.keyfor

          keyFor: function keyFor(sym) {
          keyFor: function keyFor(sym) {

-           if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol');
-           if (has(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
+           if (!isSymbol$1(sym)) throw TypeError(sym + ' is not a symbol');
+           if (has$8(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];

          },
          useSetter: function () { USE_SETTER = true; },
          useSimple: function () { USE_SETTER = false; }
        });
 
          },
          useSetter: function () { USE_SETTER = true; },
          useSimple: function () { USE_SETTER = false; }
        });
 

-       _export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
+       $$14({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL, sham: !DESCRIPTORS$h }, {

          // `Object.create` method
          // `Object.create` method

-         // https://tc39.github.io/ecma262/#sec-object.create
+         // https://tc39.es/ecma262/#sec-object.create

          create: $create,
          // `Object.defineProperty` method
          create: $create,
          // `Object.defineProperty` method

-         // https://tc39.github.io/ecma262/#sec-object.defineproperty
+         // https://tc39.es/ecma262/#sec-object.defineproperty

          defineProperty: $defineProperty,
          // `Object.defineProperties` method
          defineProperty: $defineProperty,
          // `Object.defineProperties` method

-         // https://tc39.github.io/ecma262/#sec-object.defineproperties
+         // https://tc39.es/ecma262/#sec-object.defineproperties

          defineProperties: $defineProperties,
          // `Object.getOwnPropertyDescriptor` method
          defineProperties: $defineProperties,
          // `Object.getOwnPropertyDescriptor` method

-         // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
+         // https://tc39.es/ecma262/#sec-object.getownpropertydescriptors

          getOwnPropertyDescriptor: $getOwnPropertyDescriptor
        });
 
          getOwnPropertyDescriptor: $getOwnPropertyDescriptor
        });
 

-       _export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
+       $$14({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL }, {

          // `Object.getOwnPropertyNames` method
          // `Object.getOwnPropertyNames` method

-         // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
+         // https://tc39.es/ecma262/#sec-object.getownpropertynames

          getOwnPropertyNames: $getOwnPropertyNames,
          // `Object.getOwnPropertySymbols` method
          getOwnPropertyNames: $getOwnPropertyNames,
          // `Object.getOwnPropertySymbols` method

-         // https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
+         // https://tc39.es/ecma262/#sec-object.getownpropertysymbols

          getOwnPropertySymbols: $getOwnPropertySymbols
        });
 
        // Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
        // https://bugs.chromium.org/p/v8/issues/detail?id=3443
          getOwnPropertySymbols: $getOwnPropertySymbols
        });
 
        // Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
        // https://bugs.chromium.org/p/v8/issues/detail?id=3443

-       _export({ target: 'Object', stat: true, forced: fails(function () { objectGetOwnPropertySymbols.f(1); }) }, {
+       $$14({ target: 'Object', stat: true, forced: fails$F(function () { getOwnPropertySymbolsModule$1.f(1); }) }, {

          getOwnPropertySymbols: function getOwnPropertySymbols(it) {
          getOwnPropertySymbols: function getOwnPropertySymbols(it) {

-           return objectGetOwnPropertySymbols.f(toObject(it));
+           return getOwnPropertySymbolsModule$1.f(toObject$e(it));

          }
        });
 
        // `JSON.stringify` method behavior with symbols
          }
        });
 
        // `JSON.stringify` method behavior with symbols

-       // https://tc39.github.io/ecma262/#sec-json.stringify
+       // https://tc39.es/ecma262/#sec-json.stringify

        if ($stringify) {
        if ($stringify) {

-         var FORCED_JSON_STRINGIFY = !nativeSymbol || fails(function () {
+         var FORCED_JSON_STRINGIFY = !NATIVE_SYMBOL || fails$F(function () {

            var symbol = $Symbol();
            // MS Edge converts symbol values to JSON as {}
            return $stringify([symbol]) != '[null]'
            var symbol = $Symbol();
            // MS Edge converts symbol values to JSON as {}
            return $stringify([symbol]) != '[null]'


@@ -1091,18 +1974,18 @@
              || $stringify(Object(symbol)) != '{}';
          });
 
              || $stringify(Object(symbol)) != '{}';
          });
 

-         _export({ target: 'JSON', stat: true, forced: FORCED_JSON_STRINGIFY }, {
-           // eslint-disable-next-line no-unused-vars
+         $$14({ target: 'JSON', stat: true, forced: FORCED_JSON_STRINGIFY }, {
+           // eslint-disable-next-line no-unused-vars -- required for `.length`

            stringify: function stringify(it, replacer, space) {
              var args = [it];
              var index = 1;
              var $replacer;
              while (arguments.length > index) args.push(arguments[index++]);
              $replacer = replacer;
            stringify: function stringify(it, replacer, space) {
              var args = [it];
              var index = 1;
              var $replacer;
              while (arguments.length > index) args.push(arguments[index++]);
              $replacer = replacer;

-             if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
-             if (!isArray(replacer)) replacer = function (key, value) {
+             if (!isObject$k(replacer) && it === undefined || isSymbol$1(it)) return; // IE8 returns string on undefined
+             if (!isArray$4(replacer)) replacer = function (key, value) {

                if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
                if (typeof $replacer == 'function') value = $replacer.call(this, key, value);

-               if (!isSymbol(value)) return value;
+               if (!isSymbol$1(value)) return value;

              };
              args[1] = replacer;
              return $stringify.apply(null, args);
              };
              args[1] = replacer;
              return $stringify.apply(null, args);


@@ -1111,22 +1994,27 @@
        }
 
        // `Symbol.prototype[@@toPrimitive]` method
        }
 
        // `Symbol.prototype[@@toPrimitive]` method

-       // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
+       // https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive

        if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) {
        if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) {

-         createNonEnumerableProperty($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
+         createNonEnumerableProperty$6($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);

        }
        // `Symbol.prototype[@@toStringTag]` property
        }
        // `Symbol.prototype[@@toStringTag]` property

-       // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
-       setToStringTag($Symbol, SYMBOL);
+       // https://tc39.es/ecma262/#sec-symbol.prototype-@@tostringtag
+       setToStringTag$7($Symbol, SYMBOL);

 
 

-       hiddenKeys[HIDDEN] = true;
-
-       var defineProperty$2 = objectDefineProperty.f;
+       hiddenKeys$1[HIDDEN] = true;

 
 

+       var $$13 = _export;
+       var DESCRIPTORS$g = descriptors;
+       var global$r = global$F;
+       var has$7 = has$j;
+       var isObject$j = isObject$r;
+       var defineProperty$8 = objectDefineProperty.f;
+       var copyConstructorProperties = copyConstructorProperties$2;

 
 

-       var NativeSymbol = global_1.Symbol;
+       var NativeSymbol = global$r.Symbol;

 
 

-       if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
+       if (DESCRIPTORS$g && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||

          // Safari 12 bug
          NativeSymbol().description !== undefined
        )) {
          // Safari 12 bug
          NativeSymbol().description !== undefined
        )) {


@@ -1148,866 +2036,472 @@
          var symbolToString = symbolPrototype.toString;
          var native = String(NativeSymbol('test')) == 'Symbol(test)';
          var regexp = /^Symbol\((.*)\)[^)]+$/;
          var symbolToString = symbolPrototype.toString;
          var native = String(NativeSymbol('test')) == 'Symbol(test)';
          var regexp = /^Symbol\((.*)\)[^)]+$/;

-         defineProperty$2(symbolPrototype, 'description', {
+         defineProperty$8(symbolPrototype, 'description', {

            configurable: true,
            get: function description() {
            configurable: true,
            get: function description() {

-             var symbol = isObject(this) ? this.valueOf() : this;
+             var symbol = isObject$j(this) ? this.valueOf() : this;

              var string = symbolToString.call(symbol);
              var string = symbolToString.call(symbol);

-             if (has(EmptyStringDescriptionStore, symbol)) return '';
+             if (has$7(EmptyStringDescriptionStore, symbol)) return '';

              var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
              return desc === '' ? undefined : desc;
            }
          });
 
              var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
              return desc === '' ? undefined : desc;
            }
          });
 

-         _export({ global: true, forced: true }, {
+         $$13({ global: true, forced: true }, {

            Symbol: SymbolWrapper
          });
        }
 
            Symbol: SymbolWrapper
          });
        }
 

-       // `Symbol.iterator` well-known symbol
-       // https://tc39.github.io/ecma262/#sec-symbol.iterator
-       defineWellKnownSymbol('iterator');
+       // eslint-disable-next-line es/no-typed-arrays -- safe
+       var arrayBufferNative = typeof ArrayBuffer !== 'undefined' && typeof DataView !== 'undefined';

 
 

-       var arrayMethodIsStrict = function (METHOD_NAME, argument) {
-         var method = [][METHOD_NAME];
-         return !!method && fails(function () {
-           // eslint-disable-next-line no-useless-call,no-throw-literal
-           method.call(null, argument || function () { throw 1; }, 1);
-         });
+       var redefine$a = redefine$g.exports;
+
+       var redefineAll$4 = function (target, src, options) {
+         for (var key in src) redefine$a(target, key, src[key], options);
+         return target;

        };
 
        };
 

-       var defineProperty$3 = Object.defineProperty;
-       var cache = {};
+       var anInstance$7 = function (it, Constructor, name) {
+         if (!(it instanceof Constructor)) {
+           throw TypeError('Incorrect ' + (name ? name + ' ' : '') + 'invocation');
+         } return it;
+       };

 
 

-       var thrower = function (it) { throw it; };
+       var toInteger$7 = toInteger$b;
+       var toLength$n = toLength$q;

 
 

-       var arrayMethodUsesToLength = function (METHOD_NAME, options) {
-         if (has(cache, METHOD_NAME)) return cache[METHOD_NAME];
-         if (!options) options = {};
-         var method = [][METHOD_NAME];
-         var ACCESSORS = has(options, 'ACCESSORS') ? options.ACCESSORS : false;
-         var argument0 = has(options, 0) ? options[0] : thrower;
-         var argument1 = has(options, 1) ? options[1] : undefined;
+       // `ToIndex` abstract operation
+       // https://tc39.es/ecma262/#sec-toindex
+       var toIndex$2 = function (it) {
+         if (it === undefined) return 0;
+         var number = toInteger$7(it);
+         var length = toLength$n(number);
+         if (number !== length) throw RangeError('Wrong length or index');
+         return length;
+       };

 
 

-         return cache[METHOD_NAME] = !!method && !fails(function () {
-           if (ACCESSORS && !descriptors) return true;
-           var O = { length: -1 };
+       // IEEE754 conversions based on https://github.com/feross/ieee754
+       var abs$4 = Math.abs;
+       var pow$2 = Math.pow;
+       var floor$6 = Math.floor;
+       var log$2 = Math.log;
+       var LN2 = Math.LN2;

 
 

-           if (ACCESSORS) defineProperty$3(O, 1, { enumerable: true, get: thrower });
-           else O[1] = 1;
+       var pack = function (number, mantissaLength, bytes) {
+         var buffer = new Array(bytes);
+         var exponentLength = bytes * 8 - mantissaLength - 1;
+         var eMax = (1 << exponentLength) - 1;
+         var eBias = eMax >> 1;
+         var rt = mantissaLength === 23 ? pow$2(2, -24) - pow$2(2, -77) : 0;
+         var sign = number < 0 || number === 0 && 1 / number < 0 ? 1 : 0;
+         var index = 0;
+         var exponent, mantissa, c;
+         number = abs$4(number);
+         // eslint-disable-next-line no-self-compare -- NaN check
+         if (number != number || number === Infinity) {
+           // eslint-disable-next-line no-self-compare -- NaN check
+           mantissa = number != number ? 1 : 0;
+           exponent = eMax;
+         } else {
+           exponent = floor$6(log$2(number) / LN2);
+           if (number * (c = pow$2(2, -exponent)) < 1) {
+             exponent--;
+             c *= 2;
+           }
+           if (exponent + eBias >= 1) {
+             number += rt / c;
+           } else {
+             number += rt * pow$2(2, 1 - eBias);
+           }
+           if (number * c >= 2) {
+             exponent++;
+             c /= 2;
+           }
+           if (exponent + eBias >= eMax) {
+             mantissa = 0;
+             exponent = eMax;
+           } else if (exponent + eBias >= 1) {
+             mantissa = (number * c - 1) * pow$2(2, mantissaLength);
+             exponent = exponent + eBias;
+           } else {
+             mantissa = number * pow$2(2, eBias - 1) * pow$2(2, mantissaLength);
+             exponent = 0;
+           }
+         }
+         for (; mantissaLength >= 8; buffer[index++] = mantissa & 255, mantissa /= 256, mantissaLength -= 8);
+         exponent = exponent << mantissaLength | mantissa;
+         exponentLength += mantissaLength;
+         for (; exponentLength > 0; buffer[index++] = exponent & 255, exponent /= 256, exponentLength -= 8);
+         buffer[--index] |= sign * 128;
+         return buffer;
+       };

 
 

-           method.call(O, argument0, argument1);
-         });
+       var unpack = function (buffer, mantissaLength) {
+         var bytes = buffer.length;
+         var exponentLength = bytes * 8 - mantissaLength - 1;
+         var eMax = (1 << exponentLength) - 1;
+         var eBias = eMax >> 1;
+         var nBits = exponentLength - 7;
+         var index = bytes - 1;
+         var sign = buffer[index--];
+         var exponent = sign & 127;
+         var mantissa;
+         sign >>= 7;
+         for (; nBits > 0; exponent = exponent * 256 + buffer[index], index--, nBits -= 8);
+         mantissa = exponent & (1 << -nBits) - 1;
+         exponent >>= -nBits;
+         nBits += mantissaLength;
+         for (; nBits > 0; mantissa = mantissa * 256 + buffer[index], index--, nBits -= 8);
+         if (exponent === 0) {
+           exponent = 1 - eBias;
+         } else if (exponent === eMax) {
+           return mantissa ? NaN : sign ? -Infinity : Infinity;
+         } else {
+           mantissa = mantissa + pow$2(2, mantissaLength);
+           exponent = exponent - eBias;
+         } return (sign ? -1 : 1) * mantissa * pow$2(2, exponent - mantissaLength);

        };
 
        };
 

-       var $forEach$1 = arrayIteration.forEach;
+       var ieee754$2 = {
+         pack: pack,
+         unpack: unpack
+       };

 
 

+       var toObject$d = toObject$i;
+       var toAbsoluteIndex$6 = toAbsoluteIndex$8;
+       var toLength$m = toLength$q;

 
 

+       // `Array.prototype.fill` method implementation
+       // https://tc39.es/ecma262/#sec-array.prototype.fill
+       var arrayFill$1 = function fill(value /* , start = 0, end = @length */) {
+         var O = toObject$d(this);
+         var length = toLength$m(O.length);
+         var argumentsLength = arguments.length;
+         var index = toAbsoluteIndex$6(argumentsLength > 1 ? arguments[1] : undefined, length);
+         var end = argumentsLength > 2 ? arguments[2] : undefined;
+         var endPos = end === undefined ? length : toAbsoluteIndex$6(end, length);
+         while (endPos > index) O[index++] = value;
+         return O;
+       };

 
 

-       var STRICT_METHOD = arrayMethodIsStrict('forEach');
-       var USES_TO_LENGTH = arrayMethodUsesToLength('forEach');
+       var global$q = global$F;
+       var DESCRIPTORS$f = descriptors;
+       var NATIVE_ARRAY_BUFFER$2 = arrayBufferNative;
+       var createNonEnumerableProperty$5 = createNonEnumerableProperty$e;
+       var redefineAll$3 = redefineAll$4;
+       var fails$E = fails$N;
+       var anInstance$6 = anInstance$7;
+       var toInteger$6 = toInteger$b;
+       var toLength$l = toLength$q;
+       var toIndex$1 = toIndex$2;
+       var IEEE754 = ieee754$2;
+       var getPrototypeOf$2 = objectGetPrototypeOf;
+       var setPrototypeOf$5 = objectSetPrototypeOf;
+       var getOwnPropertyNames$4 = objectGetOwnPropertyNames.f;
+       var defineProperty$7 = objectDefineProperty.f;
+       var arrayFill = arrayFill$1;
+       var setToStringTag$6 = setToStringTag$a;
+       var InternalStateModule$5 = internalState;
+
+       var getInternalState$3 = InternalStateModule$5.get;
+       var setInternalState$5 = InternalStateModule$5.set;
+       var ARRAY_BUFFER$1 = 'ArrayBuffer';
+       var DATA_VIEW = 'DataView';
+       var PROTOTYPE = 'prototype';
+       var WRONG_LENGTH$1 = 'Wrong length';
+       var WRONG_INDEX = 'Wrong index';
+       var NativeArrayBuffer$1 = global$q[ARRAY_BUFFER$1];
+       var $ArrayBuffer = NativeArrayBuffer$1;
+       var $DataView = global$q[DATA_VIEW];
+       var $DataViewPrototype = $DataView && $DataView[PROTOTYPE];
+       var ObjectPrototype$1 = Object.prototype;
+       var RangeError$2 = global$q.RangeError;

 
 

-       // `Array.prototype.forEach` method implementation
-       // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
-       var arrayForEach = (!STRICT_METHOD || !USES_TO_LENGTH) ? function forEach(callbackfn /* , thisArg */) {
-         return $forEach$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-       } : [].forEach;
+       var packIEEE754 = IEEE754.pack;
+       var unpackIEEE754 = IEEE754.unpack;

 
 

-       // `Array.prototype.forEach` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
-       _export({ target: 'Array', proto: true, forced: [].forEach != arrayForEach }, {
-         forEach: arrayForEach
-       });
+       var packInt8 = function (number) {
+         return [number & 0xFF];
+       };

 
 

-       var $indexOf = arrayIncludes.indexOf;
+       var packInt16 = function (number) {
+         return [number & 0xFF, number >> 8 & 0xFF];
+       };

 
 

+       var packInt32 = function (number) {
+         return [number & 0xFF, number >> 8 & 0xFF, number >> 16 & 0xFF, number >> 24 & 0xFF];
+       };

 
 

+       var unpackInt32 = function (buffer) {
+         return buffer[3] << 24 | buffer[2] << 16 | buffer[1] << 8 | buffer[0];
+       };

 
 

-       var nativeIndexOf = [].indexOf;
+       var packFloat32 = function (number) {
+         return packIEEE754(number, 23, 4);
+       };

 
 

-       var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
-       var STRICT_METHOD$1 = arrayMethodIsStrict('indexOf');
-       var USES_TO_LENGTH$1 = arrayMethodUsesToLength('indexOf', { ACCESSORS: true, 1: 0 });
+       var packFloat64 = function (number) {
+         return packIEEE754(number, 52, 8);
+       };

 
 

-       // `Array.prototype.indexOf` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
-       _export({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || !STRICT_METHOD$1 || !USES_TO_LENGTH$1 }, {
-         indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
-           return NEGATIVE_ZERO
-             // convert -0 to +0
-             ? nativeIndexOf.apply(this, arguments) || 0
-             : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);
-         }
-       });
-
-       // `Array.isArray` method
-       // https://tc39.github.io/ecma262/#sec-array.isarray
-       _export({ target: 'Array', stat: true }, {
-         isArray: isArray
-       });
-
-       var UNSCOPABLES = wellKnownSymbol('unscopables');
-       var ArrayPrototype = Array.prototype;
-
-       // Array.prototype[@@unscopables]
-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       if (ArrayPrototype[UNSCOPABLES] == undefined) {
-         objectDefineProperty.f(ArrayPrototype, UNSCOPABLES, {
-           configurable: true,
-           value: objectCreate(null)
-         });
-       }
-
-       // add a key to Array.prototype[@@unscopables]
-       var addToUnscopables = function (key) {
-         ArrayPrototype[UNSCOPABLES][key] = true;
-       };
-
-       var iterators = {};
-
-       var correctPrototypeGetter = !fails(function () {
-         function F() { /* empty */ }
-         F.prototype.constructor = null;
-         return Object.getPrototypeOf(new F()) !== F.prototype;
-       });
-
-       var IE_PROTO$1 = sharedKey('IE_PROTO');
-       var ObjectPrototype$1 = Object.prototype;
-
-       // `Object.getPrototypeOf` method
-       // https://tc39.github.io/ecma262/#sec-object.getprototypeof
-       var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
-         O = toObject(O);
-         if (has(O, IE_PROTO$1)) return O[IE_PROTO$1];
-         if (typeof O.constructor == 'function' && O instanceof O.constructor) {
-           return O.constructor.prototype;
-         } return O instanceof Object ? ObjectPrototype$1 : null;
-       };
-
-       var ITERATOR = wellKnownSymbol('iterator');
-       var BUGGY_SAFARI_ITERATORS = false;
-
-       var returnThis = function () { return this; };
-
-       // `%IteratorPrototype%` object
-       // https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
-       var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;
-
-       if ([].keys) {
-         arrayIterator = [].keys();
-         // Safari 8 has buggy iterators w/o `next`
-         if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
-         else {
-           PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
-           if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
-         }
-       }
-
-       if (IteratorPrototype == undefined) IteratorPrototype = {};
-
-       // 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
-       if ( !has(IteratorPrototype, ITERATOR)) {
-         createNonEnumerableProperty(IteratorPrototype, ITERATOR, returnThis);
-       }
-
-       var iteratorsCore = {
-         IteratorPrototype: IteratorPrototype,
-         BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
-       };
-
-       var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;
-
-
-
-
-
-       var returnThis$1 = function () { return this; };
-
-       var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
-         var TO_STRING_TAG = NAME + ' Iterator';
-         IteratorConstructor.prototype = objectCreate(IteratorPrototype$1, { next: createPropertyDescriptor(1, next) });
-         setToStringTag(IteratorConstructor, TO_STRING_TAG, false);
-         iterators[TO_STRING_TAG] = returnThis$1;
-         return IteratorConstructor;
-       };
-
-       var aPossiblePrototype = function (it) {
-         if (!isObject(it) && it !== null) {
-           throw TypeError("Can't set " + String(it) + ' as a prototype');
-         } return it;
-       };
-
-       // `Object.setPrototypeOf` method
-       // https://tc39.github.io/ecma262/#sec-object.setprototypeof
-       // Works with __proto__ only. Old v8 can't work with null proto objects.
-       /* eslint-disable no-proto */
-       var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () {
-         var CORRECT_SETTER = false;
-         var test = {};
-         var setter;
-         try {
-           setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
-           setter.call(test, []);
-           CORRECT_SETTER = test instanceof Array;
-         } catch (error) { /* empty */ }
-         return function setPrototypeOf(O, proto) {
-           anObject(O);
-           aPossiblePrototype(proto);
-           if (CORRECT_SETTER) setter.call(O, proto);
-           else O.__proto__ = proto;
-           return O;
-         };
-       }() : undefined);
-
-       var IteratorPrototype$2 = iteratorsCore.IteratorPrototype;
-       var BUGGY_SAFARI_ITERATORS$1 = iteratorsCore.BUGGY_SAFARI_ITERATORS;
-       var ITERATOR$1 = wellKnownSymbol('iterator');
-       var KEYS = 'keys';
-       var VALUES = 'values';
-       var ENTRIES = 'entries';
-
-       var returnThis$2 = function () { return this; };
-
-       var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
-         createIteratorConstructor(IteratorConstructor, NAME, next);
-
-         var getIterationMethod = function (KIND) {
-           if (KIND === DEFAULT && defaultIterator) return defaultIterator;
-           if (!BUGGY_SAFARI_ITERATORS$1 && KIND in IterablePrototype) return IterablePrototype[KIND];
-           switch (KIND) {
-             case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
-             case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
-             case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
-           } return function () { return new IteratorConstructor(this); };
-         };
-
-         var TO_STRING_TAG = NAME + ' Iterator';
-         var INCORRECT_VALUES_NAME = false;
-         var IterablePrototype = Iterable.prototype;
-         var nativeIterator = IterablePrototype[ITERATOR$1]
-           || IterablePrototype['@@iterator']
-           || DEFAULT && IterablePrototype[DEFAULT];
-         var defaultIterator = !BUGGY_SAFARI_ITERATORS$1 && nativeIterator || getIterationMethod(DEFAULT);
-         var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
-         var CurrentIteratorPrototype, methods, KEY;
-
-         // fix native
-         if (anyNativeIterator) {
-           CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
-           if (IteratorPrototype$2 !== Object.prototype && CurrentIteratorPrototype.next) {
-             if ( objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype$2) {
-               if (objectSetPrototypeOf) {
-                 objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype$2);
-               } else if (typeof CurrentIteratorPrototype[ITERATOR$1] != 'function') {
-                 createNonEnumerableProperty(CurrentIteratorPrototype, ITERATOR$1, returnThis$2);
-               }
-             }
-             // Set @@toStringTag to native iterators
-             setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true);
-           }
-         }
-
-         // fix Array#{values, @@iterator}.name in V8 / FF
-         if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
-           INCORRECT_VALUES_NAME = true;
-           defaultIterator = function values() { return nativeIterator.call(this); };
-         }
-
-         // define iterator
-         if ( IterablePrototype[ITERATOR$1] !== defaultIterator) {
-           createNonEnumerableProperty(IterablePrototype, ITERATOR$1, defaultIterator);
-         }
-         iterators[NAME] = defaultIterator;
-
-         // export additional methods
-         if (DEFAULT) {
-           methods = {
-             values: getIterationMethod(VALUES),
-             keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
-             entries: getIterationMethod(ENTRIES)
-           };
-           if (FORCED) for (KEY in methods) {
-             if (BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
-               redefine(IterablePrototype, KEY, methods[KEY]);
-             }
-           } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME }, methods);
-         }
-
-         return methods;
-       };
-
-       var ARRAY_ITERATOR = 'Array Iterator';
-       var setInternalState$1 = internalState.set;
-       var getInternalState$1 = internalState.getterFor(ARRAY_ITERATOR);
-
-       // `Array.prototype.entries` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.entries
-       // `Array.prototype.keys` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.keys
-       // `Array.prototype.values` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.values
-       // `Array.prototype[@@iterator]` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator
-       // `CreateArrayIterator` internal method
-       // https://tc39.github.io/ecma262/#sec-createarrayiterator
-       var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
-         setInternalState$1(this, {
-           type: ARRAY_ITERATOR,
-           target: toIndexedObject(iterated), // target
-           index: 0,                          // next index
-           kind: kind                         // kind
-         });
-       // `%ArrayIteratorPrototype%.next` method
-       // https://tc39.github.io/ecma262/#sec-%arrayiteratorprototype%.next
-       }, function () {
-         var state = getInternalState$1(this);
-         var target = state.target;
-         var kind = state.kind;
-         var index = state.index++;
-         if (!target || index >= target.length) {
-           state.target = undefined;
-           return { value: undefined, done: true };
-         }
-         if (kind == 'keys') return { value: index, done: false };
-         if (kind == 'values') return { value: target[index], done: false };
-         return { value: [index, target[index]], done: false };
-       }, 'values');
-
-       // argumentsList[@@iterator] is %ArrayProto_values%
-       // https://tc39.github.io/ecma262/#sec-createunmappedargumentsobject
-       // https://tc39.github.io/ecma262/#sec-createmappedargumentsobject
-       iterators.Arguments = iterators.Array;
-
-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('keys');
-       addToUnscopables('values');
-       addToUnscopables('entries');
-
-       var nativeJoin = [].join;
-
-       var ES3_STRINGS = indexedObject != Object;
-       var STRICT_METHOD$2 = arrayMethodIsStrict('join', ',');
-
-       // `Array.prototype.join` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.join
-       _export({ target: 'Array', proto: true, forced: ES3_STRINGS || !STRICT_METHOD$2 }, {
-         join: function join(separator) {
-           return nativeJoin.call(toIndexedObject(this), separator === undefined ? ',' : separator);
-         }
-       });
-
-       var engineUserAgent = getBuiltIn('navigator', 'userAgent') || '';
-
-       var process$1 = global_1.process;
-       var versions = process$1 && process$1.versions;
-       var v8 = versions && versions.v8;
-       var match, version;
-
-       if (v8) {
-         match = v8.split('.');
-         version = match[0] + match[1];
-       } else if (engineUserAgent) {
-         match = engineUserAgent.match(/Edge\/(\d+)/);
-         if (!match || match[1] >= 74) {
-           match = engineUserAgent.match(/Chrome\/(\d+)/);
-           if (match) version = match[1];
-         }
-       }
-
-       var engineV8Version = version && +version;
-
-       var SPECIES$1 = wellKnownSymbol('species');
-
-       var arrayMethodHasSpeciesSupport = function (METHOD_NAME) {
-         // We can't use this feature detection in V8 since it causes
-         // deoptimization and serious performance degradation
-         // https://github.com/zloirock/core-js/issues/677
-         return engineV8Version >= 51 || !fails(function () {
-           var array = [];
-           var constructor = array.constructor = {};
-           constructor[SPECIES$1] = function () {
-             return { foo: 1 };
-           };
-           return array[METHOD_NAME](Boolean).foo !== 1;
-         });
-       };
-
-       var $map = arrayIteration.map;
-
-
-
-       var HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('map');
-       // FF49- issue
-       var USES_TO_LENGTH$2 = arrayMethodUsesToLength('map');
-
-       // `Array.prototype.map` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.map
-       // with adding support of @@species
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT || !USES_TO_LENGTH$2 }, {
-         map: function map(callbackfn /* , thisArg */) {
-           return $map(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-         }
-       });
-
-       var createProperty = function (object, key, value) {
-         var propertyKey = toPrimitive(key);
-         if (propertyKey in object) objectDefineProperty.f(object, propertyKey, createPropertyDescriptor(0, value));
-         else object[propertyKey] = value;
-       };
-
-       var HAS_SPECIES_SUPPORT$1 = arrayMethodHasSpeciesSupport('slice');
-       var USES_TO_LENGTH$3 = arrayMethodUsesToLength('slice', { ACCESSORS: true, 0: 0, 1: 2 });
-
-       var SPECIES$2 = wellKnownSymbol('species');
-       var nativeSlice = [].slice;
-       var max$1 = Math.max;
-
-       // `Array.prototype.slice` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.slice
-       // fallback for not array-like ES3 strings and DOM objects
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$1 || !USES_TO_LENGTH$3 }, {
-         slice: function slice(start, end) {
-           var O = toIndexedObject(this);
-           var length = toLength(O.length);
-           var k = toAbsoluteIndex(start, length);
-           var fin = toAbsoluteIndex(end === undefined ? length : end, length);
-           // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible
-           var Constructor, result, n;
-           if (isArray(O)) {
-             Constructor = O.constructor;
-             // cross-realm fallback
-             if (typeof Constructor == 'function' && (Constructor === Array || isArray(Constructor.prototype))) {
-               Constructor = undefined;
-             } else if (isObject(Constructor)) {
-               Constructor = Constructor[SPECIES$2];
-               if (Constructor === null) Constructor = undefined;
-             }
-             if (Constructor === Array || Constructor === undefined) {
-               return nativeSlice.call(O, k, fin);
-             }
-           }
-           result = new (Constructor === undefined ? Array : Constructor)(max$1(fin - k, 0));
-           for (n = 0; k < fin; k++, n++) if (k in O) createProperty(result, n, O[k]);
-           result.length = n;
-           return result;
-         }
-       });
-
-       var arrayBufferNative = typeof ArrayBuffer !== 'undefined' && typeof DataView !== 'undefined';
-
-       var redefineAll = function (target, src, options) {
-         for (var key in src) redefine(target, key, src[key], options);
-         return target;
-       };
-
-       var anInstance = function (it, Constructor, name) {
-         if (!(it instanceof Constructor)) {
-           throw TypeError('Incorrect ' + (name ? name + ' ' : '') + 'invocation');
-         } return it;
-       };
-
-       // `ToIndex` abstract operation
-       // https://tc39.github.io/ecma262/#sec-toindex
-       var toIndex = function (it) {
-         if (it === undefined) return 0;
-         var number = toInteger(it);
-         var length = toLength(number);
-         if (number !== length) throw RangeError('Wrong length or index');
-         return length;
-       };
-
-       // IEEE754 conversions based on https://github.com/feross/ieee754
-       // eslint-disable-next-line no-shadow-restricted-names
-       var Infinity$1 = 1 / 0;
-       var abs = Math.abs;
-       var pow = Math.pow;
-       var floor$1 = Math.floor;
-       var log = Math.log;
-       var LN2 = Math.LN2;
-
-       var pack = function (number, mantissaLength, bytes) {
-         var buffer = new Array(bytes);
-         var exponentLength = bytes * 8 - mantissaLength - 1;
-         var eMax = (1 << exponentLength) - 1;
-         var eBias = eMax >> 1;
-         var rt = mantissaLength === 23 ? pow(2, -24) - pow(2, -77) : 0;
-         var sign = number < 0 || number === 0 && 1 / number < 0 ? 1 : 0;
-         var index = 0;
-         var exponent, mantissa, c;
-         number = abs(number);
-         // eslint-disable-next-line no-self-compare
-         if (number != number || number === Infinity$1) {
-           // eslint-disable-next-line no-self-compare
-           mantissa = number != number ? 1 : 0;
-           exponent = eMax;
-         } else {
-           exponent = floor$1(log(number) / LN2);
-           if (number * (c = pow(2, -exponent)) < 1) {
-             exponent--;
-             c *= 2;
-           }
-           if (exponent + eBias >= 1) {
-             number += rt / c;
-           } else {
-             number += rt * pow(2, 1 - eBias);
-           }
-           if (number * c >= 2) {
-             exponent++;
-             c /= 2;
-           }
-           if (exponent + eBias >= eMax) {
-             mantissa = 0;
-             exponent = eMax;
-           } else if (exponent + eBias >= 1) {
-             mantissa = (number * c - 1) * pow(2, mantissaLength);
-             exponent = exponent + eBias;
-           } else {
-             mantissa = number * pow(2, eBias - 1) * pow(2, mantissaLength);
-             exponent = 0;
-           }
-         }
-         for (; mantissaLength >= 8; buffer[index++] = mantissa & 255, mantissa /= 256, mantissaLength -= 8);
-         exponent = exponent << mantissaLength | mantissa;
-         exponentLength += mantissaLength;
-         for (; exponentLength > 0; buffer[index++] = exponent & 255, exponent /= 256, exponentLength -= 8);
-         buffer[--index] |= sign * 128;
-         return buffer;
-       };
-
-       var unpack = function (buffer, mantissaLength) {
-         var bytes = buffer.length;
-         var exponentLength = bytes * 8 - mantissaLength - 1;
-         var eMax = (1 << exponentLength) - 1;
-         var eBias = eMax >> 1;
-         var nBits = exponentLength - 7;
-         var index = bytes - 1;
-         var sign = buffer[index--];
-         var exponent = sign & 127;
-         var mantissa;
-         sign >>= 7;
-         for (; nBits > 0; exponent = exponent * 256 + buffer[index], index--, nBits -= 8);
-         mantissa = exponent & (1 << -nBits) - 1;
-         exponent >>= -nBits;
-         nBits += mantissaLength;
-         for (; nBits > 0; mantissa = mantissa * 256 + buffer[index], index--, nBits -= 8);
-         if (exponent === 0) {
-           exponent = 1 - eBias;
-         } else if (exponent === eMax) {
-           return mantissa ? NaN : sign ? -Infinity$1 : Infinity$1;
-         } else {
-           mantissa = mantissa + pow(2, mantissaLength);
-           exponent = exponent - eBias;
-         } return (sign ? -1 : 1) * mantissa * pow(2, exponent - mantissaLength);
-       };
-
-       var ieee754 = {
-         pack: pack,
-         unpack: unpack
-       };
-
-       // `Array.prototype.fill` method implementation
-       // https://tc39.github.io/ecma262/#sec-array.prototype.fill
-       var arrayFill = function fill(value /* , start = 0, end = @length */) {
-         var O = toObject(this);
-         var length = toLength(O.length);
-         var argumentsLength = arguments.length;
-         var index = toAbsoluteIndex(argumentsLength > 1 ? arguments[1] : undefined, length);
-         var end = argumentsLength > 2 ? arguments[2] : undefined;
-         var endPos = end === undefined ? length : toAbsoluteIndex(end, length);
-         while (endPos > index) O[index++] = value;
-         return O;
-       };
-
-       var getOwnPropertyNames = objectGetOwnPropertyNames.f;
-       var defineProperty$4 = objectDefineProperty.f;
-
-
-
-
-       var getInternalState$2 = internalState.get;
-       var setInternalState$2 = internalState.set;
-       var ARRAY_BUFFER = 'ArrayBuffer';
-       var DATA_VIEW = 'DataView';
-       var PROTOTYPE$2 = 'prototype';
-       var WRONG_LENGTH = 'Wrong length';
-       var WRONG_INDEX = 'Wrong index';
-       var NativeArrayBuffer = global_1[ARRAY_BUFFER];
-       var $ArrayBuffer = NativeArrayBuffer;
-       var $DataView = global_1[DATA_VIEW];
-       var $DataViewPrototype = $DataView && $DataView[PROTOTYPE$2];
-       var ObjectPrototype$2 = Object.prototype;
-       var RangeError$1 = global_1.RangeError;
-
-       var packIEEE754 = ieee754.pack;
-       var unpackIEEE754 = ieee754.unpack;
-
-       var packInt8 = function (number) {
-         return [number & 0xFF];
-       };
-
-       var packInt16 = function (number) {
-         return [number & 0xFF, number >> 8 & 0xFF];
-       };
-
-       var packInt32 = function (number) {
-         return [number & 0xFF, number >> 8 & 0xFF, number >> 16 & 0xFF, number >> 24 & 0xFF];
-       };
-
-       var unpackInt32 = function (buffer) {
-         return buffer[3] << 24 | buffer[2] << 16 | buffer[1] << 8 | buffer[0];
-       };
-
-       var packFloat32 = function (number) {
-         return packIEEE754(number, 23, 4);
-       };
-
-       var packFloat64 = function (number) {
-         return packIEEE754(number, 52, 8);
-       };
-
-       var addGetter = function (Constructor, key) {
-         defineProperty$4(Constructor[PROTOTYPE$2], key, { get: function () { return getInternalState$2(this)[key]; } });
+       var addGetter$1 = function (Constructor, key) {
+         defineProperty$7(Constructor[PROTOTYPE], key, { get: function () { return getInternalState$3(this)[key]; } });

        };
 
        };
 

-       var get$1 = function (view, count, index, isLittleEndian) {
-         var intIndex = toIndex(index);
-         var store = getInternalState$2(view);
-         if (intIndex + count > store.byteLength) throw RangeError$1(WRONG_INDEX);
-         var bytes = getInternalState$2(store.buffer).bytes;
+       var get$4 = function (view, count, index, isLittleEndian) {
+         var intIndex = toIndex$1(index);
+         var store = getInternalState$3(view);
+         if (intIndex + count > store.byteLength) throw RangeError$2(WRONG_INDEX);
+         var bytes = getInternalState$3(store.buffer).bytes;

          var start = intIndex + store.byteOffset;
          var pack = bytes.slice(start, start + count);
          return isLittleEndian ? pack : pack.reverse();
        };
 
          var start = intIndex + store.byteOffset;
          var pack = bytes.slice(start, start + count);
          return isLittleEndian ? pack : pack.reverse();
        };
 

-       var set$1 = function (view, count, index, conversion, value, isLittleEndian) {
-         var intIndex = toIndex(index);
-         var store = getInternalState$2(view);
-         if (intIndex + count > store.byteLength) throw RangeError$1(WRONG_INDEX);
-         var bytes = getInternalState$2(store.buffer).bytes;
+       var set$3 = function (view, count, index, conversion, value, isLittleEndian) {
+         var intIndex = toIndex$1(index);
+         var store = getInternalState$3(view);
+         if (intIndex + count > store.byteLength) throw RangeError$2(WRONG_INDEX);
+         var bytes = getInternalState$3(store.buffer).bytes;

          var start = intIndex + store.byteOffset;
          var pack = conversion(+value);
          for (var i = 0; i < count; i++) bytes[start + i] = pack[isLittleEndian ? i : count - i - 1];
        };
 
          var start = intIndex + store.byteOffset;
          var pack = conversion(+value);
          for (var i = 0; i < count; i++) bytes[start + i] = pack[isLittleEndian ? i : count - i - 1];
        };
 

-       if (!arrayBufferNative) {
+       if (!NATIVE_ARRAY_BUFFER$2) {

          $ArrayBuffer = function ArrayBuffer(length) {
          $ArrayBuffer = function ArrayBuffer(length) {

-           anInstance(this, $ArrayBuffer, ARRAY_BUFFER);
-           var byteLength = toIndex(length);
-           setInternalState$2(this, {
+           anInstance$6(this, $ArrayBuffer, ARRAY_BUFFER$1);
+           var byteLength = toIndex$1(length);
+           setInternalState$5(this, {

              bytes: arrayFill.call(new Array(byteLength), 0),
              byteLength: byteLength
            });
              bytes: arrayFill.call(new Array(byteLength), 0),
              byteLength: byteLength
            });

-           if (!descriptors) this.byteLength = byteLength;
+           if (!DESCRIPTORS$f) this.byteLength = byteLength;

          };
 
          $DataView = function DataView(buffer, byteOffset, byteLength) {
          };
 
          $DataView = function DataView(buffer, byteOffset, byteLength) {

-           anInstance(this, $DataView, DATA_VIEW);
-           anInstance(buffer, $ArrayBuffer, DATA_VIEW);
-           var bufferLength = getInternalState$2(buffer).byteLength;
-           var offset = toInteger(byteOffset);
-           if (offset < 0 || offset > bufferLength) throw RangeError$1('Wrong offset');
-           byteLength = byteLength === undefined ? bufferLength - offset : toLength(byteLength);
-           if (offset + byteLength > bufferLength) throw RangeError$1(WRONG_LENGTH);
-           setInternalState$2(this, {
+           anInstance$6(this, $DataView, DATA_VIEW);
+           anInstance$6(buffer, $ArrayBuffer, DATA_VIEW);
+           var bufferLength = getInternalState$3(buffer).byteLength;
+           var offset = toInteger$6(byteOffset);
+           if (offset < 0 || offset > bufferLength) throw RangeError$2('Wrong offset');
+           byteLength = byteLength === undefined ? bufferLength - offset : toLength$l(byteLength);
+           if (offset + byteLength > bufferLength) throw RangeError$2(WRONG_LENGTH$1);
+           setInternalState$5(this, {

              buffer: buffer,
              byteLength: byteLength,
              byteOffset: offset
            });
              buffer: buffer,
              byteLength: byteLength,
              byteOffset: offset
            });

-           if (!descriptors) {
+           if (!DESCRIPTORS$f) {

              this.buffer = buffer;
              this.byteLength = byteLength;
              this.byteOffset = offset;
            }
          };
 
              this.buffer = buffer;
              this.byteLength = byteLength;
              this.byteOffset = offset;
            }
          };
 

-         if (descriptors) {
-           addGetter($ArrayBuffer, 'byteLength');
-           addGetter($DataView, 'buffer');
-           addGetter($DataView, 'byteLength');
-           addGetter($DataView, 'byteOffset');
+         if (DESCRIPTORS$f) {
+           addGetter$1($ArrayBuffer, 'byteLength');
+           addGetter$1($DataView, 'buffer');
+           addGetter$1($DataView, 'byteLength');
+           addGetter$1($DataView, 'byteOffset');

          }
 
          }
 

-         redefineAll($DataView[PROTOTYPE$2], {
+         redefineAll$3($DataView[PROTOTYPE], {

            getInt8: function getInt8(byteOffset) {
            getInt8: function getInt8(byteOffset) {

-             return get$1(this, 1, byteOffset)[0] << 24 >> 24;
+             return get$4(this, 1, byteOffset)[0] << 24 >> 24;

            },
            getUint8: function getUint8(byteOffset) {
            },
            getUint8: function getUint8(byteOffset) {

-             return get$1(this, 1, byteOffset)[0];
+             return get$4(this, 1, byteOffset)[0];

            },
            getInt16: function getInt16(byteOffset /* , littleEndian */) {
            },
            getInt16: function getInt16(byteOffset /* , littleEndian */) {

-             var bytes = get$1(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);
+             var bytes = get$4(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);

              return (bytes[1] << 8 | bytes[0]) << 16 >> 16;
            },
            getUint16: function getUint16(byteOffset /* , littleEndian */) {
              return (bytes[1] << 8 | bytes[0]) << 16 >> 16;
            },
            getUint16: function getUint16(byteOffset /* , littleEndian */) {

-             var bytes = get$1(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);
+             var bytes = get$4(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);

              return bytes[1] << 8 | bytes[0];
            },
            getInt32: function getInt32(byteOffset /* , littleEndian */) {
              return bytes[1] << 8 | bytes[0];
            },
            getInt32: function getInt32(byteOffset /* , littleEndian */) {

-             return unpackInt32(get$1(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined));
+             return unpackInt32(get$4(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined));

            },
            getUint32: function getUint32(byteOffset /* , littleEndian */) {
            },
            getUint32: function getUint32(byteOffset /* , littleEndian */) {

-             return unpackInt32(get$1(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined)) >>> 0;
+             return unpackInt32(get$4(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined)) >>> 0;

            },
            getFloat32: function getFloat32(byteOffset /* , littleEndian */) {
            },
            getFloat32: function getFloat32(byteOffset /* , littleEndian */) {

-             return unpackIEEE754(get$1(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 23);
+             return unpackIEEE754(get$4(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 23);

            },
            getFloat64: function getFloat64(byteOffset /* , littleEndian */) {
            },
            getFloat64: function getFloat64(byteOffset /* , littleEndian */) {

-             return unpackIEEE754(get$1(this, 8, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 52);
+             return unpackIEEE754(get$4(this, 8, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 52);

            },
            setInt8: function setInt8(byteOffset, value) {
            },
            setInt8: function setInt8(byteOffset, value) {

-             set$1(this, 1, byteOffset, packInt8, value);
+             set$3(this, 1, byteOffset, packInt8, value);

            },
            setUint8: function setUint8(byteOffset, value) {
            },
            setUint8: function setUint8(byteOffset, value) {

-             set$1(this, 1, byteOffset, packInt8, value);
+             set$3(this, 1, byteOffset, packInt8, value);

            },
            setInt16: function setInt16(byteOffset, value /* , littleEndian */) {
            },
            setInt16: function setInt16(byteOffset, value /* , littleEndian */) {

-             set$1(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);

            },
            setUint16: function setUint16(byteOffset, value /* , littleEndian */) {
            },
            setUint16: function setUint16(byteOffset, value /* , littleEndian */) {

-             set$1(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);

            },
            setInt32: function setInt32(byteOffset, value /* , littleEndian */) {
            },
            setInt32: function setInt32(byteOffset, value /* , littleEndian */) {

-             set$1(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);

            },
            setUint32: function setUint32(byteOffset, value /* , littleEndian */) {
            },
            setUint32: function setUint32(byteOffset, value /* , littleEndian */) {

-             set$1(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);

            },
            setFloat32: function setFloat32(byteOffset, value /* , littleEndian */) {
            },
            setFloat32: function setFloat32(byteOffset, value /* , littleEndian */) {

-             set$1(this, 4, byteOffset, packFloat32, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 4, byteOffset, packFloat32, value, arguments.length > 2 ? arguments[2] : undefined);

            },
            setFloat64: function setFloat64(byteOffset, value /* , littleEndian */) {
            },
            setFloat64: function setFloat64(byteOffset, value /* , littleEndian */) {

-             set$1(this, 8, byteOffset, packFloat64, value, arguments.length > 2 ? arguments[2] : undefined);
+             set$3(this, 8, byteOffset, packFloat64, value, arguments.length > 2 ? arguments[2] : undefined);

            }
          });
        } else {
            }
          });
        } else {

-         if (!fails(function () {
-           NativeArrayBuffer(1);
-         }) || !fails(function () {
-           new NativeArrayBuffer(-1); // eslint-disable-line no-new
-         }) || fails(function () {
-           new NativeArrayBuffer(); // eslint-disable-line no-new
-           new NativeArrayBuffer(1.5); // eslint-disable-line no-new
-           new NativeArrayBuffer(NaN); // eslint-disable-line no-new
-           return NativeArrayBuffer.name != ARRAY_BUFFER;
+         /* eslint-disable no-new -- required for testing */
+         if (!fails$E(function () {
+           NativeArrayBuffer$1(1);
+         }) || !fails$E(function () {
+           new NativeArrayBuffer$1(-1);
+         }) || fails$E(function () {
+           new NativeArrayBuffer$1();
+           new NativeArrayBuffer$1(1.5);
+           new NativeArrayBuffer$1(NaN);
+           return NativeArrayBuffer$1.name != ARRAY_BUFFER$1;

          })) {
          })) {

+         /* eslint-enable no-new -- required for testing */

            $ArrayBuffer = function ArrayBuffer(length) {
            $ArrayBuffer = function ArrayBuffer(length) {

-             anInstance(this, $ArrayBuffer);
-             return new NativeArrayBuffer(toIndex(length));
+             anInstance$6(this, $ArrayBuffer);
+             return new NativeArrayBuffer$1(toIndex$1(length));

            };
            };

-           var ArrayBufferPrototype = $ArrayBuffer[PROTOTYPE$2] = NativeArrayBuffer[PROTOTYPE$2];
-           for (var keys$1 = getOwnPropertyNames(NativeArrayBuffer), j = 0, key; keys$1.length > j;) {
-             if (!((key = keys$1[j++]) in $ArrayBuffer)) {
-               createNonEnumerableProperty($ArrayBuffer, key, NativeArrayBuffer[key]);
+           var ArrayBufferPrototype = $ArrayBuffer[PROTOTYPE] = NativeArrayBuffer$1[PROTOTYPE];
+           for (var keys$2 = getOwnPropertyNames$4(NativeArrayBuffer$1), j$2 = 0, key$1; keys$2.length > j$2;) {
+             if (!((key$1 = keys$2[j$2++]) in $ArrayBuffer)) {
+               createNonEnumerableProperty$5($ArrayBuffer, key$1, NativeArrayBuffer$1[key$1]);

              }
            }
            ArrayBufferPrototype.constructor = $ArrayBuffer;
          }
 
          // WebKit bug - the same parent prototype for typed arrays and data view
              }
            }
            ArrayBufferPrototype.constructor = $ArrayBuffer;
          }
 
          // WebKit bug - the same parent prototype for typed arrays and data view

-         if (objectSetPrototypeOf && objectGetPrototypeOf($DataViewPrototype) !== ObjectPrototype$2) {
-           objectSetPrototypeOf($DataViewPrototype, ObjectPrototype$2);
+         if (setPrototypeOf$5 && getPrototypeOf$2($DataViewPrototype) !== ObjectPrototype$1) {
+           setPrototypeOf$5($DataViewPrototype, ObjectPrototype$1);

          }
 
          // iOS Safari 7.x bug
          var testView = new $DataView(new $ArrayBuffer(2));
          }
 
          // iOS Safari 7.x bug
          var testView = new $DataView(new $ArrayBuffer(2));

-         var nativeSetInt8 = $DataViewPrototype.setInt8;
+         var $setInt8 = $DataViewPrototype.setInt8;

          testView.setInt8(0, 2147483648);
          testView.setInt8(1, 2147483649);
          testView.setInt8(0, 2147483648);
          testView.setInt8(1, 2147483649);

-         if (testView.getInt8(0) || !testView.getInt8(1)) redefineAll($DataViewPrototype, {
+         if (testView.getInt8(0) || !testView.getInt8(1)) redefineAll$3($DataViewPrototype, {

            setInt8: function setInt8(byteOffset, value) {
            setInt8: function setInt8(byteOffset, value) {

-             nativeSetInt8.call(this, byteOffset, value << 24 >> 24);
+             $setInt8.call(this, byteOffset, value << 24 >> 24);

            },
            setUint8: function setUint8(byteOffset, value) {
            },
            setUint8: function setUint8(byteOffset, value) {

-             nativeSetInt8.call(this, byteOffset, value << 24 >> 24);
+             $setInt8.call(this, byteOffset, value << 24 >> 24);

            }
          }, { unsafe: true });
        }
 
            }
          }, { unsafe: true });
        }
 

-       setToStringTag($ArrayBuffer, ARRAY_BUFFER);
-       setToStringTag($DataView, DATA_VIEW);
+       setToStringTag$6($ArrayBuffer, ARRAY_BUFFER$1);
+       setToStringTag$6($DataView, DATA_VIEW);

 
        var arrayBuffer = {
          ArrayBuffer: $ArrayBuffer,
          DataView: $DataView
        };
 
 
        var arrayBuffer = {
          ArrayBuffer: $ArrayBuffer,
          DataView: $DataView
        };
 

-       var SPECIES$3 = wellKnownSymbol('species');
-
-       var setSpecies = function (CONSTRUCTOR_NAME) {
-         var Constructor = getBuiltIn(CONSTRUCTOR_NAME);
-         var defineProperty = objectDefineProperty.f;
-
-         if (descriptors && Constructor && !Constructor[SPECIES$3]) {
-           defineProperty(Constructor, SPECIES$3, {
-             configurable: true,
-             get: function () { return this; }
-           });
-         }
-       };
-
-       var ARRAY_BUFFER$1 = 'ArrayBuffer';
-       var ArrayBuffer$1 = arrayBuffer[ARRAY_BUFFER$1];
-       var NativeArrayBuffer$1 = global_1[ARRAY_BUFFER$1];
-
-       // `ArrayBuffer` constructor
-       // https://tc39.github.io/ecma262/#sec-arraybuffer-constructor
-       _export({ global: true, forced: NativeArrayBuffer$1 !== ArrayBuffer$1 }, {
-         ArrayBuffer: ArrayBuffer$1
-       });
-
-       setSpecies(ARRAY_BUFFER$1);
-
-       var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');
-       var test = {};
-
-       test[TO_STRING_TAG$1] = 'z';
+       var anObject$f = anObject$m;
+       var aFunction$7 = aFunction$9;
+       var wellKnownSymbol$h = wellKnownSymbol$s;

 
 

-       var toStringTagSupport = String(test) === '[object z]';
+       var SPECIES$5 = wellKnownSymbol$h('species');

 
 

-       var TO_STRING_TAG$2 = wellKnownSymbol('toStringTag');
-       // ES3 wrong here
-       var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
-
-       // fallback for IE11 Script Access Denied error
-       var tryGet = function (it, key) {
-         try {
-           return it[key];
-         } catch (error) { /* empty */ }
+       // `SpeciesConstructor` abstract operation
+       // https://tc39.es/ecma262/#sec-speciesconstructor
+       var speciesConstructor$8 = function (O, defaultConstructor) {
+         var C = anObject$f(O).constructor;
+         var S;
+         return C === undefined || (S = anObject$f(C)[SPECIES$5]) == undefined ? defaultConstructor : aFunction$7(S);

        };
 
        };
 

-       // getting tag from ES6+ `Object.prototype.toString`
-       var classof = toStringTagSupport ? classofRaw : function (it) {
-         var O, tag, result;
-         return it === undefined ? 'Undefined' : it === null ? 'Null'
-           // @@toStringTag case
-           : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG$2)) == 'string' ? tag
-           // builtinTag case
-           : CORRECT_ARGUMENTS ? classofRaw(O)
-           // ES3 arguments fallback
-           : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
-       };
+       var $$12 = _export;
+       var fails$D = fails$N;
+       var ArrayBufferModule$2 = arrayBuffer;
+       var anObject$e = anObject$m;
+       var toAbsoluteIndex$5 = toAbsoluteIndex$8;
+       var toLength$k = toLength$q;
+       var speciesConstructor$7 = speciesConstructor$8;

 
 

-       var defineProperty$5 = objectDefineProperty.f;
+       var ArrayBuffer$4 = ArrayBufferModule$2.ArrayBuffer;
+       var DataView$2 = ArrayBufferModule$2.DataView;
+       var nativeArrayBufferSlice = ArrayBuffer$4.prototype.slice;

 
 

+       var INCORRECT_SLICE = fails$D(function () {
+         return !new ArrayBuffer$4(2).slice(1, undefined).byteLength;
+       });

 
 

+       // `ArrayBuffer.prototype.slice` method
+       // https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
+       $$12({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {
+         slice: function slice(start, end) {
+           if (nativeArrayBufferSlice !== undefined && end === undefined) {
+             return nativeArrayBufferSlice.call(anObject$e(this), start); // FF fix
+           }
+           var length = anObject$e(this).byteLength;
+           var first = toAbsoluteIndex$5(start, length);
+           var fin = toAbsoluteIndex$5(end === undefined ? length : end, length);
+           var result = new (speciesConstructor$7(this, ArrayBuffer$4))(toLength$k(fin - first));
+           var viewSource = new DataView$2(this);
+           var viewTarget = new DataView$2(result);
+           var index = 0;
+           while (first < fin) {
+             viewTarget.setUint8(index++, viewSource.getUint8(first++));
+           } return result;
+         }
+       });

 
 

+       var $$11 = _export;
+       var ArrayBufferModule$1 = arrayBuffer;
+       var NATIVE_ARRAY_BUFFER$1 = arrayBufferNative;

 
 

+       // `DataView` constructor
+       // https://tc39.es/ecma262/#sec-dataview-constructor
+       $$11({ global: true, forced: !NATIVE_ARRAY_BUFFER$1 }, {
+         DataView: ArrayBufferModule$1.DataView
+       });

 
 

-       var Int8Array$1 = global_1.Int8Array;
-       var Int8ArrayPrototype = Int8Array$1 && Int8Array$1.prototype;
-       var Uint8ClampedArray = global_1.Uint8ClampedArray;
+       var NATIVE_ARRAY_BUFFER = arrayBufferNative;
+       var DESCRIPTORS$e = descriptors;
+       var global$p = global$F;
+       var isObject$i = isObject$r;
+       var has$6 = has$j;
+       var classof$8 = classof$b;
+       var createNonEnumerableProperty$4 = createNonEnumerableProperty$e;
+       var redefine$9 = redefine$g.exports;
+       var defineProperty$6 = objectDefineProperty.f;
+       var getPrototypeOf$1 = objectGetPrototypeOf;
+       var setPrototypeOf$4 = objectSetPrototypeOf;
+       var wellKnownSymbol$g = wellKnownSymbol$s;
+       var uid$1 = uid$5;
+
+       var Int8Array$3 = global$p.Int8Array;
+       var Int8ArrayPrototype = Int8Array$3 && Int8Array$3.prototype;
+       var Uint8ClampedArray = global$p.Uint8ClampedArray;

        var Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;
        var Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;

-       var TypedArray = Int8Array$1 && objectGetPrototypeOf(Int8Array$1);
-       var TypedArrayPrototype = Int8ArrayPrototype && objectGetPrototypeOf(Int8ArrayPrototype);
-       var ObjectPrototype$3 = Object.prototype;
-       var isPrototypeOf = ObjectPrototype$3.isPrototypeOf;
+       var TypedArray$1 = Int8Array$3 && getPrototypeOf$1(Int8Array$3);
+       var TypedArrayPrototype$1 = Int8ArrayPrototype && getPrototypeOf$1(Int8ArrayPrototype);
+       var ObjectPrototype = Object.prototype;
+       var isPrototypeOf = ObjectPrototype.isPrototypeOf;

 
 

-       var TO_STRING_TAG$3 = wellKnownSymbol('toStringTag');
-       var TYPED_ARRAY_TAG = uid('TYPED_ARRAY_TAG');
+       var TO_STRING_TAG = wellKnownSymbol$g('toStringTag');
+       var TYPED_ARRAY_TAG$1 = uid$1('TYPED_ARRAY_TAG');

        // Fixing native typed arrays in Opera Presto crashes the browser, see #595
        // Fixing native typed arrays in Opera Presto crashes the browser, see #595

-       var NATIVE_ARRAY_BUFFER_VIEWS = arrayBufferNative && !!objectSetPrototypeOf && classof(global_1.opera) !== 'Opera';
+       var NATIVE_ARRAY_BUFFER_VIEWS$3 = NATIVE_ARRAY_BUFFER && !!setPrototypeOf$4 && classof$8(global$p.opera) !== 'Opera';

        var TYPED_ARRAY_TAG_REQIRED = false;
        var TYPED_ARRAY_TAG_REQIRED = false;

-       var NAME;
+       var NAME$1;

 
        var TypedArrayConstructorsList = {
          Int8Array: 1,
 
        var TypedArrayConstructorsList = {
          Int8Array: 1,


@@ -2021,273 +2515,381 @@
          Float64Array: 8
        };
 
          Float64Array: 8
        };
 

+       var BigIntArrayConstructorsList = {
+         BigInt64Array: 8,
+         BigUint64Array: 8
+       };
+

        var isView = function isView(it) {
        var isView = function isView(it) {

-         var klass = classof(it);
-         return klass === 'DataView' || has(TypedArrayConstructorsList, klass);
+         if (!isObject$i(it)) return false;
+         var klass = classof$8(it);
+         return klass === 'DataView'
+           || has$6(TypedArrayConstructorsList, klass)
+           || has$6(BigIntArrayConstructorsList, klass);

        };
 
        };
 

-       var isTypedArray = function (it) {
-         return isObject(it) && has(TypedArrayConstructorsList, classof(it));
+       var isTypedArray$1 = function (it) {
+         if (!isObject$i(it)) return false;
+         var klass = classof$8(it);
+         return has$6(TypedArrayConstructorsList, klass)
+           || has$6(BigIntArrayConstructorsList, klass);

        };
 
        };
 

-       var aTypedArray = function (it) {
-         if (isTypedArray(it)) return it;
+       var aTypedArray$m = function (it) {
+         if (isTypedArray$1(it)) return it;

          throw TypeError('Target is not a typed array');
        };
 
          throw TypeError('Target is not a typed array');
        };
 

-       var aTypedArrayConstructor = function (C) {
-         if (objectSetPrototypeOf) {
-           if (isPrototypeOf.call(TypedArray, C)) return C;
-         } else for (var ARRAY in TypedArrayConstructorsList) if (has(TypedArrayConstructorsList, NAME)) {
-           var TypedArrayConstructor = global_1[ARRAY];
+       var aTypedArrayConstructor$5 = function (C) {
+         if (setPrototypeOf$4) {
+           if (isPrototypeOf.call(TypedArray$1, C)) return C;
+         } else for (var ARRAY in TypedArrayConstructorsList) if (has$6(TypedArrayConstructorsList, NAME$1)) {
+           var TypedArrayConstructor = global$p[ARRAY];

            if (TypedArrayConstructor && (C === TypedArrayConstructor || isPrototypeOf.call(TypedArrayConstructor, C))) {
              return C;
            }
          } throw TypeError('Target is not a typed array constructor');
        };
 
            if (TypedArrayConstructor && (C === TypedArrayConstructor || isPrototypeOf.call(TypedArrayConstructor, C))) {
              return C;
            }
          } throw TypeError('Target is not a typed array constructor');
        };
 

-       var exportTypedArrayMethod = function (KEY, property, forced) {
-         if (!descriptors) return;
+       var exportTypedArrayMethod$n = function (KEY, property, forced) {
+         if (!DESCRIPTORS$e) return;

          if (forced) for (var ARRAY in TypedArrayConstructorsList) {
          if (forced) for (var ARRAY in TypedArrayConstructorsList) {

-           var TypedArrayConstructor = global_1[ARRAY];
-           if (TypedArrayConstructor && has(TypedArrayConstructor.prototype, KEY)) {
+           var TypedArrayConstructor = global$p[ARRAY];
+           if (TypedArrayConstructor && has$6(TypedArrayConstructor.prototype, KEY)) try {

              delete TypedArrayConstructor.prototype[KEY];
              delete TypedArrayConstructor.prototype[KEY];

-           }
+           } catch (error) { /* empty */ }

          }
          }

-         if (!TypedArrayPrototype[KEY] || forced) {
-           redefine(TypedArrayPrototype, KEY, forced ? property
-             : NATIVE_ARRAY_BUFFER_VIEWS && Int8ArrayPrototype[KEY] || property);
+         if (!TypedArrayPrototype$1[KEY] || forced) {
+           redefine$9(TypedArrayPrototype$1, KEY, forced ? property
+             : NATIVE_ARRAY_BUFFER_VIEWS$3 && Int8ArrayPrototype[KEY] || property);

          }
        };
 
          }
        };
 

-       var exportTypedArrayStaticMethod = function (KEY, property, forced) {
+       var exportTypedArrayStaticMethod$1 = function (KEY, property, forced) {

          var ARRAY, TypedArrayConstructor;
          var ARRAY, TypedArrayConstructor;

-         if (!descriptors) return;
-         if (objectSetPrototypeOf) {
+         if (!DESCRIPTORS$e) return;
+         if (setPrototypeOf$4) {

            if (forced) for (ARRAY in TypedArrayConstructorsList) {
            if (forced) for (ARRAY in TypedArrayConstructorsList) {

-             TypedArrayConstructor = global_1[ARRAY];
-             if (TypedArrayConstructor && has(TypedArrayConstructor, KEY)) {
+             TypedArrayConstructor = global$p[ARRAY];
+             if (TypedArrayConstructor && has$6(TypedArrayConstructor, KEY)) try {

                delete TypedArrayConstructor[KEY];
                delete TypedArrayConstructor[KEY];

-             }
+             } catch (error) { /* empty */ }

            }
            }

-           if (!TypedArray[KEY] || forced) {
+           if (!TypedArray$1[KEY] || forced) {

              // V8 ~ Chrome 49-50 `%TypedArray%` methods are non-writable non-configurable
              try {
              // V8 ~ Chrome 49-50 `%TypedArray%` methods are non-writable non-configurable
              try {

-               return redefine(TypedArray, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS && Int8Array$1[KEY] || property);
+               return redefine$9(TypedArray$1, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS$3 && TypedArray$1[KEY] || property);

              } catch (error) { /* empty */ }
            } else return;
          }
          for (ARRAY in TypedArrayConstructorsList) {
              } catch (error) { /* empty */ }
            } else return;
          }
          for (ARRAY in TypedArrayConstructorsList) {

-           TypedArrayConstructor = global_1[ARRAY];
+           TypedArrayConstructor = global$p[ARRAY];

            if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {
            if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {

-             redefine(TypedArrayConstructor, KEY, property);
+             redefine$9(TypedArrayConstructor, KEY, property);

            }
          }
        };
 
            }
          }
        };
 

-       for (NAME in TypedArrayConstructorsList) {
-         if (!global_1[NAME]) NATIVE_ARRAY_BUFFER_VIEWS = false;
+       for (NAME$1 in TypedArrayConstructorsList) {
+         if (!global$p[NAME$1]) NATIVE_ARRAY_BUFFER_VIEWS$3 = false;

        }
 
        // WebKit bug - typed arrays constructors prototype is Object.prototype
        }
 
        // WebKit bug - typed arrays constructors prototype is Object.prototype

-       if (!NATIVE_ARRAY_BUFFER_VIEWS || typeof TypedArray != 'function' || TypedArray === Function.prototype) {
-         // eslint-disable-next-line no-shadow
-         TypedArray = function TypedArray() {
+       if (!NATIVE_ARRAY_BUFFER_VIEWS$3 || typeof TypedArray$1 != 'function' || TypedArray$1 === Function.prototype) {
+         // eslint-disable-next-line no-shadow -- safe
+         TypedArray$1 = function TypedArray() {

            throw TypeError('Incorrect invocation');
          };
            throw TypeError('Incorrect invocation');
          };

-         if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
-           if (global_1[NAME]) objectSetPrototypeOf(global_1[NAME], TypedArray);
+         if (NATIVE_ARRAY_BUFFER_VIEWS$3) for (NAME$1 in TypedArrayConstructorsList) {
+           if (global$p[NAME$1]) setPrototypeOf$4(global$p[NAME$1], TypedArray$1);

          }
        }
 
          }
        }
 

-       if (!NATIVE_ARRAY_BUFFER_VIEWS || !TypedArrayPrototype || TypedArrayPrototype === ObjectPrototype$3) {
-         TypedArrayPrototype = TypedArray.prototype;
-         if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
-           if (global_1[NAME]) objectSetPrototypeOf(global_1[NAME].prototype, TypedArrayPrototype);
+       if (!NATIVE_ARRAY_BUFFER_VIEWS$3 || !TypedArrayPrototype$1 || TypedArrayPrototype$1 === ObjectPrototype) {
+         TypedArrayPrototype$1 = TypedArray$1.prototype;
+         if (NATIVE_ARRAY_BUFFER_VIEWS$3) for (NAME$1 in TypedArrayConstructorsList) {
+           if (global$p[NAME$1]) setPrototypeOf$4(global$p[NAME$1].prototype, TypedArrayPrototype$1);

          }
        }
 
        // WebKit bug - one more object in Uint8ClampedArray prototype chain
          }
        }
 
        // WebKit bug - one more object in Uint8ClampedArray prototype chain

-       if (NATIVE_ARRAY_BUFFER_VIEWS && objectGetPrototypeOf(Uint8ClampedArrayPrototype) !== TypedArrayPrototype) {
-         objectSetPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);
+       if (NATIVE_ARRAY_BUFFER_VIEWS$3 && getPrototypeOf$1(Uint8ClampedArrayPrototype) !== TypedArrayPrototype$1) {
+         setPrototypeOf$4(Uint8ClampedArrayPrototype, TypedArrayPrototype$1);

        }
 
        }
 

-       if (descriptors && !has(TypedArrayPrototype, TO_STRING_TAG$3)) {
+       if (DESCRIPTORS$e && !has$6(TypedArrayPrototype$1, TO_STRING_TAG)) {

          TYPED_ARRAY_TAG_REQIRED = true;
          TYPED_ARRAY_TAG_REQIRED = true;

-         defineProperty$5(TypedArrayPrototype, TO_STRING_TAG$3, { get: function () {
-           return isObject(this) ? this[TYPED_ARRAY_TAG] : undefined;
+         defineProperty$6(TypedArrayPrototype$1, TO_STRING_TAG, { get: function () {
+           return isObject$i(this) ? this[TYPED_ARRAY_TAG$1] : undefined;

          } });
          } });

-         for (NAME in TypedArrayConstructorsList) if (global_1[NAME]) {
-           createNonEnumerableProperty(global_1[NAME], TYPED_ARRAY_TAG, NAME);
+         for (NAME$1 in TypedArrayConstructorsList) if (global$p[NAME$1]) {
+           createNonEnumerableProperty$4(global$p[NAME$1], TYPED_ARRAY_TAG$1, NAME$1);

          }
        }
 
        var arrayBufferViewCore = {
          }
        }
 
        var arrayBufferViewCore = {

-         NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS,
-         TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQIRED && TYPED_ARRAY_TAG,
-         aTypedArray: aTypedArray,
-         aTypedArrayConstructor: aTypedArrayConstructor,
-         exportTypedArrayMethod: exportTypedArrayMethod,
-         exportTypedArrayStaticMethod: exportTypedArrayStaticMethod,
+         NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS$3,
+         TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQIRED && TYPED_ARRAY_TAG$1,
+         aTypedArray: aTypedArray$m,
+         aTypedArrayConstructor: aTypedArrayConstructor$5,
+         exportTypedArrayMethod: exportTypedArrayMethod$n,
+         exportTypedArrayStaticMethod: exportTypedArrayStaticMethod$1,

          isView: isView,
          isView: isView,

-         isTypedArray: isTypedArray,
-         TypedArray: TypedArray,
-         TypedArrayPrototype: TypedArrayPrototype
+         isTypedArray: isTypedArray$1,
+         TypedArray: TypedArray$1,
+         TypedArrayPrototype: TypedArrayPrototype$1

        };
 
        };
 

-       var NATIVE_ARRAY_BUFFER_VIEWS$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
+       var $$10 = _export;
+       var ArrayBufferViewCore$n = arrayBufferViewCore;
+
+       var NATIVE_ARRAY_BUFFER_VIEWS$2 = ArrayBufferViewCore$n.NATIVE_ARRAY_BUFFER_VIEWS;

 
        // `ArrayBuffer.isView` method
 
        // `ArrayBuffer.isView` method

-       // https://tc39.github.io/ecma262/#sec-arraybuffer.isview
-       _export({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS$1 }, {
-         isView: arrayBufferViewCore.isView
+       // https://tc39.es/ecma262/#sec-arraybuffer.isview
+       $$10({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS$2 }, {
+         isView: ArrayBufferViewCore$n.isView

        });
 
        });
 

-       var SPECIES$4 = wellKnownSymbol('species');
+       var getBuiltIn$4 = getBuiltIn$9;
+       var definePropertyModule$2 = objectDefineProperty;
+       var wellKnownSymbol$f = wellKnownSymbol$s;
+       var DESCRIPTORS$d = descriptors;

 
 

-       // `SpeciesConstructor` abstract operation
-       // https://tc39.github.io/ecma262/#sec-speciesconstructor
-       var speciesConstructor = function (O, defaultConstructor) {
-         var C = anObject(O).constructor;
-         var S;
-         return C === undefined || (S = anObject(C)[SPECIES$4]) == undefined ? defaultConstructor : aFunction$1(S);
+       var SPECIES$4 = wellKnownSymbol$f('species');
+
+       var setSpecies$5 = function (CONSTRUCTOR_NAME) {
+         var Constructor = getBuiltIn$4(CONSTRUCTOR_NAME);
+         var defineProperty = definePropertyModule$2.f;
+
+         if (DESCRIPTORS$d && Constructor && !Constructor[SPECIES$4]) {
+           defineProperty(Constructor, SPECIES$4, {
+             configurable: true,
+             get: function () { return this; }
+           });
+         }

        };
 
        };
 

-       var ArrayBuffer$2 = arrayBuffer.ArrayBuffer;
-       var DataView$1 = arrayBuffer.DataView;
-       var nativeArrayBufferSlice = ArrayBuffer$2.prototype.slice;
+       var $$$ = _export;
+       var global$o = global$F;
+       var arrayBufferModule = arrayBuffer;
+       var setSpecies$4 = setSpecies$5;
+
+       var ARRAY_BUFFER = 'ArrayBuffer';
+       var ArrayBuffer$3 = arrayBufferModule[ARRAY_BUFFER];
+       var NativeArrayBuffer = global$o[ARRAY_BUFFER];

 
 

-       var INCORRECT_SLICE = fails(function () {
-         return !new ArrayBuffer$2(2).slice(1, undefined).byteLength;
+       // `ArrayBuffer` constructor
+       // https://tc39.es/ecma262/#sec-arraybuffer-constructor
+       $$$({ global: true, forced: NativeArrayBuffer !== ArrayBuffer$3 }, {
+         ArrayBuffer: ArrayBuffer$3

        });
 
        });
 

-       // `ArrayBuffer.prototype.slice` method
-       // https://tc39.github.io/ecma262/#sec-arraybuffer.prototype.slice
-       _export({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {
-         slice: function slice(start, end) {
-           if (nativeArrayBufferSlice !== undefined && end === undefined) {
-             return nativeArrayBufferSlice.call(anObject(this), start); // FF fix
-           }
-           var length = anObject(this).byteLength;
-           var first = toAbsoluteIndex(start, length);
-           var fin = toAbsoluteIndex(end === undefined ? length : end, length);
-           var result = new (speciesConstructor(this, ArrayBuffer$2))(toLength(fin - first));
-           var viewSource = new DataView$1(this);
-           var viewTarget = new DataView$1(result);
-           var index = 0;
-           while (first < fin) {
-             viewTarget.setUint8(index++, viewSource.getUint8(first++));
-           } return result;
+       setSpecies$4(ARRAY_BUFFER);
+
+       var fails$C = fails$N;
+
+       var arrayMethodIsStrict$8 = function (METHOD_NAME, argument) {
+         var method = [][METHOD_NAME];
+         return !!method && fails$C(function () {
+           // eslint-disable-next-line no-useless-call,no-throw-literal -- required for testing
+           method.call(null, argument || function () { throw 1; }, 1);
+         });
+       };
+
+       /* eslint-disable es/no-array-prototype-indexof -- required for testing */
+       var $$_ = _export;
+       var $indexOf$1 = arrayIncludes.indexOf;
+       var arrayMethodIsStrict$7 = arrayMethodIsStrict$8;
+
+       var nativeIndexOf = [].indexOf;
+
+       var NEGATIVE_ZERO$1 = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
+       var STRICT_METHOD$7 = arrayMethodIsStrict$7('indexOf');
+
+       // `Array.prototype.indexOf` method
+       // https://tc39.es/ecma262/#sec-array.prototype.indexof
+       $$_({ target: 'Array', proto: true, forced: NEGATIVE_ZERO$1 || !STRICT_METHOD$7 }, {
+         indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
+           return NEGATIVE_ZERO$1
+             // convert -0 to +0
+             ? nativeIndexOf.apply(this, arguments) || 0
+             : $indexOf$1(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 

-       // `DataView` constructor
-       // https://tc39.github.io/ecma262/#sec-dataview-constructor
-       _export({ global: true, forced: !arrayBufferNative }, {
-         DataView: arrayBuffer.DataView
+       var fails$B = fails$N;
+       var wellKnownSymbol$e = wellKnownSymbol$s;
+       var V8_VERSION$2 = engineV8Version;
+
+       var SPECIES$3 = wellKnownSymbol$e('species');
+
+       var arrayMethodHasSpeciesSupport$5 = function (METHOD_NAME) {
+         // We can't use this feature detection in V8 since it causes
+         // deoptimization and serious performance degradation
+         // https://github.com/zloirock/core-js/issues/677
+         return V8_VERSION$2 >= 51 || !fails$B(function () {
+           var array = [];
+           var constructor = array.constructor = {};
+           constructor[SPECIES$3] = function () {
+             return { foo: 1 };
+           };
+           return array[METHOD_NAME](Boolean).foo !== 1;
+         });
+       };
+
+       var $$Z = _export;
+       var $map$1 = arrayIteration.map;
+       var arrayMethodHasSpeciesSupport$4 = arrayMethodHasSpeciesSupport$5;
+
+       var HAS_SPECIES_SUPPORT$3 = arrayMethodHasSpeciesSupport$4('map');
+
+       // `Array.prototype.map` method
+       // https://tc39.es/ecma262/#sec-array.prototype.map
+       // with adding support of @@species
+       $$Z({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$3 }, {
+         map: function map(callbackfn /* , thisArg */) {
+           return $map$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+         }

        });
 
        });
 

-       var defineProperty$6 = objectDefineProperty.f;
+       var $forEach$1 = arrayIteration.forEach;
+       var arrayMethodIsStrict$6 = arrayMethodIsStrict$8;

 
 

-       var FunctionPrototype = Function.prototype;
-       var FunctionPrototypeToString = FunctionPrototype.toString;
-       var nameRE = /^\s*function ([^ (]*)/;
-       var NAME$1 = 'name';
+       var STRICT_METHOD$6 = arrayMethodIsStrict$6('forEach');

 
 

-       // Function instances `.name` property
-       // https://tc39.github.io/ecma262/#sec-function-instances-name
-       if (descriptors && !(NAME$1 in FunctionPrototype)) {
-         defineProperty$6(FunctionPrototype, NAME$1, {
-           configurable: true,
-           get: function () {
-             try {
-               return FunctionPrototypeToString.call(this).match(nameRE)[1];
-             } catch (error) {
-               return '';
-             }
-           }
-         });
+       // `Array.prototype.forEach` method implementation
+       // https://tc39.es/ecma262/#sec-array.prototype.foreach
+       var arrayForEach = !STRICT_METHOD$6 ? function forEach(callbackfn /* , thisArg */) {
+         return $forEach$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+       // eslint-disable-next-line es/no-array-prototype-foreach -- safe
+       } : [].forEach;
+
+       var $$Y = _export;
+       var forEach$3 = arrayForEach;
+
+       // `Array.prototype.forEach` method
+       // https://tc39.es/ecma262/#sec-array.prototype.foreach
+       // eslint-disable-next-line es/no-array-prototype-foreach -- safe
+       $$Y({ target: 'Array', proto: true, forced: [].forEach != forEach$3 }, {
+         forEach: forEach$3
+       });
+
+       var global$n = global$F;
+       var DOMIterables = domIterables;
+       var forEach$2 = arrayForEach;
+       var createNonEnumerableProperty$3 = createNonEnumerableProperty$e;
+
+       for (var COLLECTION_NAME in DOMIterables) {
+         var Collection = global$n[COLLECTION_NAME];
+         var CollectionPrototype = Collection && Collection.prototype;
+         // some Chrome versions have non-configurable methods on DOMTokenList
+         if (CollectionPrototype && CollectionPrototype.forEach !== forEach$2) try {
+           createNonEnumerableProperty$3(CollectionPrototype, 'forEach', forEach$2);
+         } catch (error) {
+           CollectionPrototype.forEach = forEach$2;
+         }

        }
 
        }
 

-       // `Object.create` method
-       // https://tc39.github.io/ecma262/#sec-object.create
-       _export({ target: 'Object', stat: true, sham: !descriptors }, {
-         create: objectCreate
+       var $$X = _export;
+       var isArray$3 = isArray$6;
+
+       // `Array.isArray` method
+       // https://tc39.es/ecma262/#sec-array.isarray
+       $$X({ target: 'Array', stat: true }, {
+         isArray: isArray$3

        });
 
        });
 

-       var nativeGetOwnPropertyNames$2 = objectGetOwnPropertyNamesExternal.f;
+       var $$W = _export;
+       var fails$A = fails$N;
+       var getOwnPropertyNames$3 = objectGetOwnPropertyNamesExternal.f;

 
 

-       var FAILS_ON_PRIMITIVES = fails(function () { return !Object.getOwnPropertyNames(1); });
+       // eslint-disable-next-line es/no-object-getownpropertynames -- required for testing
+       var FAILS_ON_PRIMITIVES$4 = fails$A(function () { return !Object.getOwnPropertyNames(1); });

 
        // `Object.getOwnPropertyNames` method
 
        // `Object.getOwnPropertyNames` method

-       // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {
-         getOwnPropertyNames: nativeGetOwnPropertyNames$2
+       // https://tc39.es/ecma262/#sec-object.getownpropertynames
+       $$W({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$4 }, {
+         getOwnPropertyNames: getOwnPropertyNames$3

        });
 
        });
 

-       // `Object.prototype.toString` method implementation
-       // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
-       var objectToString = toStringTagSupport ? {}.toString : function toString() {
-         return '[object ' + classof(this) + ']';
-       };
+       var global$m = global$F;

 
 

-       // `Object.prototype.toString` method
-       // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
-       if (!toStringTagSupport) {
-         redefine(Object.prototype, 'toString', objectToString, { unsafe: true });
-       }
+       var nativePromiseConstructor = global$m.Promise;

 
 

-       var nativePromiseConstructor = global_1.Promise;
+       var wellKnownSymbol$d = wellKnownSymbol$s;
+       var Iterators$1 = iterators;

 
 

-       var ITERATOR$2 = wellKnownSymbol('iterator');
-       var ArrayPrototype$1 = Array.prototype;
+       var ITERATOR$5 = wellKnownSymbol$d('iterator');
+       var ArrayPrototype = Array.prototype;

 
        // check on default Array iterator
 
        // check on default Array iterator

-       var isArrayIteratorMethod = function (it) {
-         return it !== undefined && (iterators.Array === it || ArrayPrototype$1[ITERATOR$2] === it);
+       var isArrayIteratorMethod$3 = function (it) {
+         return it !== undefined && (Iterators$1.Array === it || ArrayPrototype[ITERATOR$5] === it);

        };
 
        };
 

-       var ITERATOR$3 = wellKnownSymbol('iterator');
+       var classof$7 = classof$b;
+       var Iterators = iterators;
+       var wellKnownSymbol$c = wellKnownSymbol$s;
+
+       var ITERATOR$4 = wellKnownSymbol$c('iterator');

 
 

-       var getIteratorMethod = function (it) {
-         if (it != undefined) return it[ITERATOR$3]
+       var getIteratorMethod$5 = function (it) {
+         if (it != undefined) return it[ITERATOR$4]

            || it['@@iterator']
            || it['@@iterator']

-           || iterators[classof(it)];
+           || Iterators[classof$7(it)];

        };
 
        };
 

-       // call something on iterator step with safe closing on error
-       var callWithSafeIterationClosing = function (iterator, fn, value, ENTRIES) {
-         try {
-           return ENTRIES ? fn(anObject(value)[0], value[1]) : fn(value);
-         // 7.4.6 IteratorClose(iterator, completion)
-         } catch (error) {
-           var returnMethod = iterator['return'];
-           if (returnMethod !== undefined) anObject(returnMethod.call(iterator));
-           throw error;
+       var anObject$d = anObject$m;
+
+       var iteratorClose$2 = function (iterator) {
+         var returnMethod = iterator['return'];
+         if (returnMethod !== undefined) {
+           return anObject$d(returnMethod.call(iterator)).value;

          }
        };
 
          }
        };
 

-       var iterate_1 = createCommonjsModule(function (module) {
+       var anObject$c = anObject$m;
+       var isArrayIteratorMethod$2 = isArrayIteratorMethod$3;
+       var toLength$j = toLength$q;
+       var bind$a = functionBindContext;
+       var getIteratorMethod$4 = getIteratorMethod$5;
+       var iteratorClose$1 = iteratorClose$2;
+

        var Result = function (stopped, result) {
          this.stopped = stopped;
          this.result = result;
        };
 
        var Result = function (stopped, result) {
          this.stopped = stopped;
          this.result = result;
        };
 

-       var iterate = module.exports = function (iterable, fn, that, AS_ENTRIES, IS_ITERATOR) {
-         var boundFunction = functionBindContext(fn, that, AS_ENTRIES ? 2 : 1);
+       var iterate$3 = function (iterable, unboundFunction, options) {
+         var that = options && options.that;
+         var AS_ENTRIES = !!(options && options.AS_ENTRIES);
+         var IS_ITERATOR = !!(options && options.IS_ITERATOR);
+         var INTERRUPTED = !!(options && options.INTERRUPTED);
+         var fn = bind$a(unboundFunction, that, 1 + AS_ENTRIES + INTERRUPTED);

          var iterator, iterFn, index, length, result, next, step;
 
          var iterator, iterFn, index, length, result, next, step;
 

+         var stop = function (condition) {
+           if (iterator) iteratorClose$1(iterator);
+           return new Result(true, condition);
+         };
+
+         var callFn = function (value) {
+           if (AS_ENTRIES) {
+             anObject$c(value);
+             return INTERRUPTED ? fn(value[0], value[1], stop) : fn(value[0], value[1]);
+           } return INTERRUPTED ? fn(value, stop) : fn(value);
+         };
+

          if (IS_ITERATOR) {
            iterator = iterable;
          } else {
          if (IS_ITERATOR) {
            iterator = iterable;
          } else {

-           iterFn = getIteratorMethod(iterable);
+           iterFn = getIteratorMethod$4(iterable);

            if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
            // optimisation for array iterators
            if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
            // optimisation for array iterators

-           if (isArrayIteratorMethod(iterFn)) {
-             for (index = 0, length = toLength(iterable.length); length > index; index++) {
-               result = AS_ENTRIES
-                 ? boundFunction(anObject(step = iterable[index])[0], step[1])
-                 : boundFunction(iterable[index]);
+           if (isArrayIteratorMethod$2(iterFn)) {
+             for (index = 0, length = toLength$j(iterable.length); length > index; index++) {
+               result = callFn(iterable[index]);

                if (result && result instanceof Result) return result;
              } return new Result(false);
            }
                if (result && result instanceof Result) return result;
              } return new Result(false);
            }


@@ -2296,17 +2898,19 @@
 
          next = iterator.next;
          while (!(step = next.call(iterator)).done) {
 
          next = iterator.next;
          while (!(step = next.call(iterator)).done) {

-           result = callWithSafeIterationClosing(iterator, boundFunction, step.value, AS_ENTRIES);
+           try {
+             result = callFn(step.value);
+           } catch (error) {
+             iteratorClose$1(iterator);
+             throw error;
+           }

            if (typeof result == 'object' && result && result instanceof Result) return result;
          } return new Result(false);
        };
 
            if (typeof result == 'object' && result && result instanceof Result) return result;
          } return new Result(false);
        };
 

-       iterate.stop = function (result) {
-         return new Result(true, result);
-       };
-       });
+       var wellKnownSymbol$b = wellKnownSymbol$s;

 
 

-       var ITERATOR$4 = wellKnownSymbol('iterator');
+       var ITERATOR$3 = wellKnownSymbol$b('iterator');

        var SAFE_CLOSING = false;
 
        try {
        var SAFE_CLOSING = false;
 
        try {


@@ -2319,19 +2923,19 @@
              SAFE_CLOSING = true;
            }
          };
              SAFE_CLOSING = true;
            }
          };

-         iteratorWithReturn[ITERATOR$4] = function () {
+         iteratorWithReturn[ITERATOR$3] = function () {

            return this;
          };
            return this;
          };

-         // eslint-disable-next-line no-throw-literal
+         // eslint-disable-next-line es/no-array-from, no-throw-literal -- required for testing

          Array.from(iteratorWithReturn, function () { throw 2; });
        } catch (error) { /* empty */ }
 
          Array.from(iteratorWithReturn, function () { throw 2; });
        } catch (error) { /* empty */ }
 

-       var checkCorrectnessOfIteration = function (exec, SKIP_CLOSING) {
+       var checkCorrectnessOfIteration$4 = function (exec, SKIP_CLOSING) {

          if (!SKIP_CLOSING && !SAFE_CLOSING) return false;
          var ITERATION_SUPPORT = false;
          try {
            var object = {};
          if (!SKIP_CLOSING && !SAFE_CLOSING) return false;
          var ITERATION_SUPPORT = false;
          try {
            var object = {};

-           object[ITERATOR$4] = function () {
+           object[ITERATOR$3] = function () {

              return {
                next: function () {
                  return { done: ITERATION_SUPPORT = true };
              return {
                next: function () {
                  return { done: ITERATION_SUPPORT = true };


@@ -2343,21 +2947,36 @@
          return ITERATION_SUPPORT;
        };
 
          return ITERATION_SUPPORT;
        };
 

-       var engineIsIos = /(iphone|ipod|ipad).*applewebkit/i.test(engineUserAgent);
+       var userAgent$4 = engineUserAgent;
+
+       var engineIsIos = /(?:iphone|ipod|ipad).*applewebkit/i.test(userAgent$4);
+
+       var classof$6 = classofRaw$1;
+       var global$l = global$F;

 
 

-       var location$1 = global_1.location;
-       var set$2 = global_1.setImmediate;
-       var clear = global_1.clearImmediate;
-       var process$2 = global_1.process;
-       var MessageChannel = global_1.MessageChannel;
-       var Dispatch = global_1.Dispatch;
+       var engineIsNode = classof$6(global$l.process) == 'process';
+
+       var global$k = global$F;
+       var fails$z = fails$N;
+       var bind$9 = functionBindContext;
+       var html = html$2;
+       var createElement = documentCreateElement$1;
+       var IS_IOS$1 = engineIsIos;
+       var IS_NODE$3 = engineIsNode;
+
+       var location$1 = global$k.location;
+       var set$2 = global$k.setImmediate;
+       var clear = global$k.clearImmediate;
+       var process$3 = global$k.process;
+       var MessageChannel = global$k.MessageChannel;
+       var Dispatch$1 = global$k.Dispatch;

        var counter = 0;
        var queue = {};
        var ONREADYSTATECHANGE = 'onreadystatechange';
        var defer, channel, port;
 
        var run = function (id) {
        var counter = 0;
        var queue = {};
        var ONREADYSTATECHANGE = 'onreadystatechange';
        var defer, channel, port;
 
        var run = function (id) {

-         // eslint-disable-next-line no-prototype-builtins
+         // eslint-disable-next-line no-prototype-builtins -- safe

          if (queue.hasOwnProperty(id)) {
            var fn = queue[id];
            delete queue[id];
          if (queue.hasOwnProperty(id)) {
            var fn = queue[id];
            delete queue[id];


@@ -2377,7 +2996,7 @@
 
        var post = function (id) {
          // old engines have not location.origin
 
        var post = function (id) {
          // old engines have not location.origin

-         global_1.postMessage(id + '', location$1.protocol + '//' + location$1.host);
+         global$k.postMessage(id + '', location$1.protocol + '//' + location$1.host);

        };
 
        // Node.js 0.9+ & IE10+ has setImmediate, otherwise:
        };
 
        // Node.js 0.9+ & IE10+ has setImmediate, otherwise:


@@ -2387,7 +3006,7 @@
            var i = 1;
            while (arguments.length > i) args.push(arguments[i++]);
            queue[++counter] = function () {
            var i = 1;
            while (arguments.length > i) args.push(arguments[i++]);
            queue[++counter] = function () {

-             // eslint-disable-next-line no-new-func
+             // eslint-disable-next-line no-new-func -- spec requirement

              (typeof fn == 'function' ? fn : Function(fn)).apply(undefined, args);
            };
            defer(counter);
              (typeof fn == 'function' ? fn : Function(fn)).apply(undefined, args);
            };
            defer(counter);


@@ -2397,37 +3016,37 @@
            delete queue[id];
          };
          // Node.js 0.8-
            delete queue[id];
          };
          // Node.js 0.8-

-         if (classofRaw(process$2) == 'process') {
+         if (IS_NODE$3) {

            defer = function (id) {
            defer = function (id) {

-             process$2.nextTick(runner(id));
+             process$3.nextTick(runner(id));

            };
          // Sphere (JS game engine) Dispatch API
            };
          // Sphere (JS game engine) Dispatch API

-         } else if (Dispatch && Dispatch.now) {
+         } else if (Dispatch$1 && Dispatch$1.now) {

            defer = function (id) {
            defer = function (id) {

-             Dispatch.now(runner(id));
+             Dispatch$1.now(runner(id));

            };
          // Browsers with MessageChannel, includes WebWorkers
          // except iOS - https://github.com/zloirock/core-js/issues/624
            };
          // Browsers with MessageChannel, includes WebWorkers
          // except iOS - https://github.com/zloirock/core-js/issues/624

-         } else if (MessageChannel && !engineIsIos) {
+         } else if (MessageChannel && !IS_IOS$1) {

            channel = new MessageChannel();
            port = channel.port2;
            channel.port1.onmessage = listener;
            channel = new MessageChannel();
            port = channel.port2;
            channel.port1.onmessage = listener;

-           defer = functionBindContext(port.postMessage, port, 1);
+           defer = bind$9(port.postMessage, port, 1);

          // Browsers with postMessage, skip WebWorkers
          // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
          } else if (
          // Browsers with postMessage, skip WebWorkers
          // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
          } else if (

-           global_1.addEventListener &&
+           global$k.addEventListener &&

            typeof postMessage == 'function' &&
            typeof postMessage == 'function' &&

-           !global_1.importScripts &&
-           !fails(post) &&
-           location$1.protocol !== 'file:'
+           !global$k.importScripts &&
+           location$1 && location$1.protocol !== 'file:' &&
+           !fails$z(post)

          ) {
            defer = post;
          ) {
            defer = post;

-           global_1.addEventListener('message', listener, false);
+           global$k.addEventListener('message', listener, false);

          // IE8-
          // IE8-

-         } else if (ONREADYSTATECHANGE in documentCreateElement('script')) {
+         } else if (ONREADYSTATECHANGE in createElement('script')) {

            defer = function (id) {
            defer = function (id) {

-             html.appendChild(documentCreateElement('script'))[ONREADYSTATECHANGE] = function () {
+             html.appendChild(createElement('script'))[ONREADYSTATECHANGE] = function () {

                html.removeChild(this);
                run(id);
              };
                html.removeChild(this);
                run(id);
              };


@@ -2440,38 +3059,44 @@
          }
        }
 
          }
        }
 

-       var task = {
+       var task$1 = {

          set: set$2,
          clear: clear
        };
 
          set: set$2,
          clear: clear
        };
 

-       var getOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
-
-       var macrotask = task.set;
+       var userAgent$3 = engineUserAgent;

 
 

+       var engineIsWebosWebkit = /web0s(?!.*chrome)/i.test(userAgent$3);

 
 

-       var MutationObserver = global_1.MutationObserver || global_1.WebKitMutationObserver;
-       var process$3 = global_1.process;
-       var Promise$1 = global_1.Promise;
-       var IS_NODE = classofRaw(process$3) == 'process';
+       var global$j = global$F;
+       var getOwnPropertyDescriptor$3 = objectGetOwnPropertyDescriptor.f;
+       var macrotask = task$1.set;
+       var IS_IOS = engineIsIos;
+       var IS_WEBOS_WEBKIT = engineIsWebosWebkit;
+       var IS_NODE$2 = engineIsNode;
+
+       var MutationObserver = global$j.MutationObserver || global$j.WebKitMutationObserver;
+       var document$2 = global$j.document;
+       var process$2 = global$j.process;
+       var Promise$1 = global$j.Promise;

        // Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`
        // Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`

-       var queueMicrotaskDescriptor = getOwnPropertyDescriptor$2(global_1, 'queueMicrotask');
+       var queueMicrotaskDescriptor = getOwnPropertyDescriptor$3(global$j, 'queueMicrotask');

        var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;
 
        var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;
 

-       var flush, head, last, notify, toggle, node, promise, then;
+       var flush, head, last, notify$1, toggle, node, promise, then;

 
        // modern engines have queueMicrotask method
        if (!queueMicrotask) {
          flush = function () {
            var parent, fn;
 
        // modern engines have queueMicrotask method
        if (!queueMicrotask) {
          flush = function () {
            var parent, fn;

-           if (IS_NODE && (parent = process$3.domain)) parent.exit();
+           if (IS_NODE$2 && (parent = process$2.domain)) parent.exit();

            while (head) {
              fn = head.fn;
              head = head.next;
              try {
                fn();
              } catch (error) {
            while (head) {
              fn = head.fn;
              head = head.next;
              try {
                fn();
              } catch (error) {

-               if (head) notify();
+               if (head) notify$1();

                else last = undefined;
                throw error;
              }
                else last = undefined;
                throw error;
              }


@@ -2479,27 +3104,30 @@
            if (parent) parent.enter();
          };
 
            if (parent) parent.enter();
          };
 

-         // Node.js
-         if (IS_NODE) {
-           notify = function () {
-             process$3.nextTick(flush);
-           };

          // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339
          // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339

-         } else if (MutationObserver && !engineIsIos) {
+         // also except WebOS Webkit https://github.com/zloirock/core-js/issues/898
+         if (!IS_IOS && !IS_NODE$2 && !IS_WEBOS_WEBKIT && MutationObserver && document$2) {

            toggle = true;
            toggle = true;

-           node = document.createTextNode('');
+           node = document$2.createTextNode('');

            new MutationObserver(flush).observe(node, { characterData: true });
            new MutationObserver(flush).observe(node, { characterData: true });

-           notify = function () {
+           notify$1 = function () {

              node.data = toggle = !toggle;
            };
          // environments with maybe non-completely correct, but existent Promise
          } else if (Promise$1 && Promise$1.resolve) {
            // Promise.resolve without an argument throws an error in LG WebOS 2
            promise = Promise$1.resolve(undefined);
              node.data = toggle = !toggle;
            };
          // environments with maybe non-completely correct, but existent Promise
          } else if (Promise$1 && Promise$1.resolve) {
            // Promise.resolve without an argument throws an error in LG WebOS 2
            promise = Promise$1.resolve(undefined);

+           // workaround of WebKit ~ iOS Safari 10.1 bug
+           promise.constructor = Promise$1;

            then = promise.then;
            then = promise.then;

-           notify = function () {
+           notify$1 = function () {

              then.call(promise, flush);
            };
              then.call(promise, flush);
            };

+         // Node.js without promises
+         } else if (IS_NODE$2) {
+           notify$1 = function () {
+             process$2.nextTick(flush);
+           };

          // for other environments - macrotask based on:
          // - setImmediate
          // - MessageChannel
          // for other environments - macrotask based on:
          // - setImmediate
          // - MessageChannel


@@ -2507,22 +3135,26 @@
          // - onreadystatechange
          // - setTimeout
          } else {
          // - onreadystatechange
          // - setTimeout
          } else {

-           notify = function () {
+           notify$1 = function () {

              // strange IE + webpack dev server bug - use .call(global)
              // strange IE + webpack dev server bug - use .call(global)

-             macrotask.call(global_1, flush);
+             macrotask.call(global$j, flush);

            };
          }
        }
 
            };
          }
        }
 

-       var microtask = queueMicrotask || function (fn) {
+       var microtask$1 = queueMicrotask || function (fn) {

          var task = { fn: fn, next: undefined };
          if (last) last.next = task;
          if (!head) {
            head = task;
          var task = { fn: fn, next: undefined };
          if (last) last.next = task;
          if (!head) {
            head = task;

-           notify();
+           notify$1();

          } last = task;
        };
 
          } last = task;
        };
 

+       var newPromiseCapability$2 = {};
+
+       var aFunction$6 = aFunction$9;
+

        var PromiseCapability = function (C) {
          var resolve, reject;
          this.promise = new C(function ($$resolve, $$reject) {
        var PromiseCapability = function (C) {
          var resolve, reject;
          this.promise = new C(function ($$resolve, $$reject) {


@@ -2530,36 +3162,39 @@
            resolve = $$resolve;
            reject = $$reject;
          });
            resolve = $$resolve;
            reject = $$reject;
          });

-         this.resolve = aFunction$1(resolve);
-         this.reject = aFunction$1(reject);
+         this.resolve = aFunction$6(resolve);
+         this.reject = aFunction$6(reject);

        };
 
        };
 

-       // 25.4.1.5 NewPromiseCapability(C)
-       var f$7 = function (C) {
+       // `NewPromiseCapability` abstract operation
+       // https://tc39.es/ecma262/#sec-newpromisecapability
+       newPromiseCapability$2.f = function (C) {

          return new PromiseCapability(C);
        };
 
          return new PromiseCapability(C);
        };
 

-       var newPromiseCapability = {
-               f: f$7
-       };
+       var anObject$b = anObject$m;
+       var isObject$h = isObject$r;
+       var newPromiseCapability$1 = newPromiseCapability$2;

 
 

-       var promiseResolve = function (C, x) {
-         anObject(C);
-         if (isObject(x) && x.constructor === C) return x;
-         var promiseCapability = newPromiseCapability.f(C);
+       var promiseResolve$2 = function (C, x) {
+         anObject$b(C);
+         if (isObject$h(x) && x.constructor === C) return x;
+         var promiseCapability = newPromiseCapability$1.f(C);

          var resolve = promiseCapability.resolve;
          resolve(x);
          return promiseCapability.promise;
        };
 
          var resolve = promiseCapability.resolve;
          resolve(x);
          return promiseCapability.promise;
        };
 

-       var hostReportErrors = function (a, b) {
-         var console = global_1.console;
+       var global$i = global$F;
+
+       var hostReportErrors$1 = function (a, b) {
+         var console = global$i.console;

          if (console && console.error) {
            arguments.length === 1 ? console.error(a) : console.error(a, b);
          }
        };
 
          if (console && console.error) {
            arguments.length === 1 ? console.error(a) : console.error(a, b);
          }
        };
 

-       var perform = function (exec) {
+       var perform$1 = function (exec) {

          try {
            return { error: false, value: exec() };
          } catch (error) {
          try {
            return { error: false, value: exec() };
          } catch (error) {


@@ -2567,31 +3202,52 @@
          }
        };
 
          }
        };
 

-       var task$1 = task.set;
-
-
-
-
-
-
-
-
-
-
-       var SPECIES$5 = wellKnownSymbol('species');
+       var engineIsBrowser = typeof window == 'object';
+
+       var $$V = _export;
+       var global$h = global$F;
+       var getBuiltIn$3 = getBuiltIn$9;
+       var NativePromise$1 = nativePromiseConstructor;
+       var redefine$8 = redefine$g.exports;
+       var redefineAll$2 = redefineAll$4;
+       var setPrototypeOf$3 = objectSetPrototypeOf;
+       var setToStringTag$5 = setToStringTag$a;
+       var setSpecies$3 = setSpecies$5;
+       var isObject$g = isObject$r;
+       var aFunction$5 = aFunction$9;
+       var anInstance$5 = anInstance$7;
+       var inspectSource = inspectSource$3;
+       var iterate$2 = iterate$3;
+       var checkCorrectnessOfIteration$3 = checkCorrectnessOfIteration$4;
+       var speciesConstructor$6 = speciesConstructor$8;
+       var task = task$1.set;
+       var microtask = microtask$1;
+       var promiseResolve$1 = promiseResolve$2;
+       var hostReportErrors = hostReportErrors$1;
+       var newPromiseCapabilityModule = newPromiseCapability$2;
+       var perform = perform$1;
+       var InternalStateModule$4 = internalState;
+       var isForced$3 = isForced_1;
+       var wellKnownSymbol$a = wellKnownSymbol$s;
+       var IS_BROWSER = engineIsBrowser;
+       var IS_NODE$1 = engineIsNode;
+       var V8_VERSION$1 = engineV8Version;
+
+       var SPECIES$2 = wellKnownSymbol$a('species');

        var PROMISE = 'Promise';
        var PROMISE = 'Promise';

-       var getInternalState$3 = internalState.get;
-       var setInternalState$3 = internalState.set;
-       var getInternalPromiseState = internalState.getterFor(PROMISE);
-       var PromiseConstructor = nativePromiseConstructor;
-       var TypeError$1 = global_1.TypeError;
-       var document$2 = global_1.document;
-       var process$4 = global_1.process;
-       var $fetch = getBuiltIn('fetch');
-       var newPromiseCapability$1 = newPromiseCapability.f;
-       var newGenericPromiseCapability = newPromiseCapability$1;
-       var IS_NODE$1 = classofRaw(process$4) == 'process';
-       var DISPATCH_EVENT = !!(document$2 && document$2.createEvent && global_1.dispatchEvent);
+       var getInternalState$2 = InternalStateModule$4.get;
+       var setInternalState$4 = InternalStateModule$4.set;
+       var getInternalPromiseState = InternalStateModule$4.getterFor(PROMISE);
+       var NativePromisePrototype = NativePromise$1 && NativePromise$1.prototype;
+       var PromiseConstructor = NativePromise$1;
+       var PromiseConstructorPrototype = NativePromisePrototype;
+       var TypeError$1 = global$h.TypeError;
+       var document$1 = global$h.document;
+       var process$1 = global$h.process;
+       var newPromiseCapability = newPromiseCapabilityModule.f;
+       var newGenericPromiseCapability = newPromiseCapability;
+       var DISPATCH_EVENT = !!(document$1 && document$1.createEvent && global$h.dispatchEvent);
+       var NATIVE_REJECTION_EVENT = typeof PromiseRejectionEvent == 'function';

        var UNHANDLED_REJECTION = 'unhandledrejection';
        var REJECTION_HANDLED = 'rejectionhandled';
        var PENDING = 0;
        var UNHANDLED_REJECTION = 'unhandledrejection';
        var REJECTION_HANDLED = 'rejectionhandled';
        var PENDING = 0;


@@ -2599,43 +3255,43 @@
        var REJECTED = 2;
        var HANDLED = 1;
        var UNHANDLED = 2;
        var REJECTED = 2;
        var HANDLED = 1;
        var UNHANDLED = 2;

+       var SUBCLASSING = false;

        var Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;
 
        var Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;
 

-       var FORCED = isForced_1(PROMISE, function () {
+       var FORCED$f = isForced$3(PROMISE, function () {

          var GLOBAL_CORE_JS_PROMISE = inspectSource(PromiseConstructor) !== String(PromiseConstructor);
          var GLOBAL_CORE_JS_PROMISE = inspectSource(PromiseConstructor) !== String(PromiseConstructor);

-         if (!GLOBAL_CORE_JS_PROMISE) {
-           // V8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables
-           // https://bugs.chromium.org/p/chromium/issues/detail?id=830565
-           // We can't detect it synchronously, so just check versions
-           if (engineV8Version === 66) return true;
-           // Unhandled rejections tracking support, NodeJS Promise without it fails @@species test
-           if (!IS_NODE$1 && typeof PromiseRejectionEvent != 'function') return true;
-         }
+         // V8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables
+         // https://bugs.chromium.org/p/chromium/issues/detail?id=830565
+         // We can't detect it synchronously, so just check versions
+         if (!GLOBAL_CORE_JS_PROMISE && V8_VERSION$1 === 66) return true;

          // We can't use @@species feature detection in V8 since it causes
          // deoptimization and performance degradation
          // https://github.com/zloirock/core-js/issues/679
          // We can't use @@species feature detection in V8 since it causes
          // deoptimization and performance degradation
          // https://github.com/zloirock/core-js/issues/679

-         if (engineV8Version >= 51 && /native code/.test(PromiseConstructor)) return false;
+         if (V8_VERSION$1 >= 51 && /native code/.test(PromiseConstructor)) return false;

          // Detect correctness of subclassing with @@species support
          // Detect correctness of subclassing with @@species support

-         var promise = PromiseConstructor.resolve(1);
+         var promise = new PromiseConstructor(function (resolve) { resolve(1); });

          var FakePromise = function (exec) {
            exec(function () { /* empty */ }, function () { /* empty */ });
          };
          var constructor = promise.constructor = {};
          var FakePromise = function (exec) {
            exec(function () { /* empty */ }, function () { /* empty */ });
          };
          var constructor = promise.constructor = {};

-         constructor[SPECIES$5] = FakePromise;
-         return !(promise.then(function () { /* empty */ }) instanceof FakePromise);
+         constructor[SPECIES$2] = FakePromise;
+         SUBCLASSING = promise.then(function () { /* empty */ }) instanceof FakePromise;
+         if (!SUBCLASSING) return true;
+         // Unhandled rejections tracking support, NodeJS Promise without it fails @@species test
+         return !GLOBAL_CORE_JS_PROMISE && IS_BROWSER && !NATIVE_REJECTION_EVENT;

        });
 
        });
 

-       var INCORRECT_ITERATION = FORCED || !checkCorrectnessOfIteration(function (iterable) {
+       var INCORRECT_ITERATION$1 = FORCED$f || !checkCorrectnessOfIteration$3(function (iterable) {

          PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
        });
 
        // helpers
        var isThenable = function (it) {
          var then;
          PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
        });
 
        // helpers
        var isThenable = function (it) {
          var then;

-         return isObject(it) && typeof (then = it.then) == 'function' ? then : false;
+         return isObject$g(it) && typeof (then = it.then) == 'function' ? then : false;

        };
 
        };
 

-       var notify$1 = function (promise, state, isReject) {
+       var notify = function (state, isReject) {

          if (state.notified) return;
          state.notified = true;
          var chain = state.reactions;
          if (state.notified) return;
          state.notified = true;
          var chain = state.reactions;


@@ -2654,7 +3310,7 @@
              try {
                if (handler) {
                  if (!ok) {
              try {
                if (handler) {
                  if (!ok) {

-                   if (state.rejection === UNHANDLED) onHandleUnhandled(promise, state);
+                   if (state.rejection === UNHANDLED) onHandleUnhandled(state);

                    state.rejection = HANDLED;
                  }
                  if (handler === true) result = value;
                    state.rejection = HANDLED;
                  }
                  if (handler === true) result = value;


@@ -2679,33 +3335,34 @@
            }
            state.reactions = [];
            state.notified = false;
            }
            state.reactions = [];
            state.notified = false;

-           if (isReject && !state.rejection) onUnhandled(promise, state);
+           if (isReject && !state.rejection) onUnhandled(state);

          });
        };
 
          });
        };
 

-       var dispatchEvent = function (name, promise, reason) {
+       var dispatchEvent$1 = function (name, promise, reason) {

          var event, handler;
          if (DISPATCH_EVENT) {
          var event, handler;
          if (DISPATCH_EVENT) {

-           event = document$2.createEvent('Event');
+           event = document$1.createEvent('Event');

            event.promise = promise;
            event.reason = reason;
            event.initEvent(name, false, true);
            event.promise = promise;
            event.reason = reason;
            event.initEvent(name, false, true);

-           global_1.dispatchEvent(event);
+           global$h.dispatchEvent(event);

          } else event = { promise: promise, reason: reason };
          } else event = { promise: promise, reason: reason };

-         if (handler = global_1['on' + name]) handler(event);
+         if (!NATIVE_REJECTION_EVENT && (handler = global$h['on' + name])) handler(event);

          else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
        };
 
          else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
        };
 

-       var onUnhandled = function (promise, state) {
-         task$1.call(global_1, function () {
+       var onUnhandled = function (state) {
+         task.call(global$h, function () {
+           var promise = state.facade;

            var value = state.value;
            var IS_UNHANDLED = isUnhandled(state);
            var result;
            if (IS_UNHANDLED) {
              result = perform(function () {
                if (IS_NODE$1) {
            var value = state.value;
            var IS_UNHANDLED = isUnhandled(state);
            var result;
            if (IS_UNHANDLED) {
              result = perform(function () {
                if (IS_NODE$1) {

-                 process$4.emit('unhandledRejection', value, promise);
-               } else dispatchEvent(UNHANDLED_REJECTION, promise, value);
+                 process$1.emit('unhandledRejection', value, promise);
+               } else dispatchEvent$1(UNHANDLED_REJECTION, promise, value);

              });
              // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
              state.rejection = IS_NODE$1 || isUnhandled(state) ? UNHANDLED : HANDLED;
              });
              // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
              state.rejection = IS_NODE$1 || isUnhandled(state) ? UNHANDLED : HANDLED;


@@ -2718,75 +3375,77 @@
          return state.rejection !== HANDLED && !state.parent;
        };
 
          return state.rejection !== HANDLED && !state.parent;
        };
 

-       var onHandleUnhandled = function (promise, state) {
-         task$1.call(global_1, function () {
+       var onHandleUnhandled = function (state) {
+         task.call(global$h, function () {
+           var promise = state.facade;

            if (IS_NODE$1) {
            if (IS_NODE$1) {

-             process$4.emit('rejectionHandled', promise);
-           } else dispatchEvent(REJECTION_HANDLED, promise, state.value);
+             process$1.emit('rejectionHandled', promise);
+           } else dispatchEvent$1(REJECTION_HANDLED, promise, state.value);

          });
        };
 
          });
        };
 

-       var bind = function (fn, promise, state, unwrap) {
+       var bind$8 = function (fn, state, unwrap) {

          return function (value) {
          return function (value) {

-           fn(promise, state, value, unwrap);
+           fn(state, value, unwrap);

          };
        };
 
          };
        };
 

-       var internalReject = function (promise, state, value, unwrap) {
+       var internalReject = function (state, value, unwrap) {

          if (state.done) return;
          state.done = true;
          if (unwrap) state = unwrap;
          state.value = value;
          state.state = REJECTED;
          if (state.done) return;
          state.done = true;
          if (unwrap) state = unwrap;
          state.value = value;
          state.state = REJECTED;

-         notify$1(promise, state, true);
+         notify(state, true);

        };
 
        };
 

-       var internalResolve = function (promise, state, value, unwrap) {
+       var internalResolve = function (state, value, unwrap) {

          if (state.done) return;
          state.done = true;
          if (unwrap) state = unwrap;
          try {
          if (state.done) return;
          state.done = true;
          if (unwrap) state = unwrap;
          try {

-           if (promise === value) throw TypeError$1("Promise can't be resolved itself");
+           if (state.facade === value) throw TypeError$1("Promise can't be resolved itself");

            var then = isThenable(value);
            if (then) {
              microtask(function () {
                var wrapper = { done: false };
                try {
                  then.call(value,
            var then = isThenable(value);
            if (then) {
              microtask(function () {
                var wrapper = { done: false };
                try {
                  then.call(value,

-                   bind(internalResolve, promise, wrapper, state),
-                   bind(internalReject, promise, wrapper, state)
+                   bind$8(internalResolve, wrapper, state),
+                   bind$8(internalReject, wrapper, state)

                  );
                } catch (error) {
                  );
                } catch (error) {

-                 internalReject(promise, wrapper, error, state);
+                 internalReject(wrapper, error, state);

                }
              });
            } else {
              state.value = value;
              state.state = FULFILLED;
                }
              });
            } else {
              state.value = value;
              state.state = FULFILLED;

-             notify$1(promise, state, false);
+             notify(state, false);

            }
          } catch (error) {
            }
          } catch (error) {

-           internalReject(promise, { done: false }, error, state);
+           internalReject({ done: false }, error, state);

          }
        };
 
        // constructor polyfill
          }
        };
 
        // constructor polyfill

-       if (FORCED) {
+       if (FORCED$f) {

          // 25.4.3.1 Promise(executor)
          PromiseConstructor = function Promise(executor) {
          // 25.4.3.1 Promise(executor)
          PromiseConstructor = function Promise(executor) {

-           anInstance(this, PromiseConstructor, PROMISE);
-           aFunction$1(executor);
+           anInstance$5(this, PromiseConstructor, PROMISE);
+           aFunction$5(executor);

            Internal.call(this);
            Internal.call(this);

-           var state = getInternalState$3(this);
+           var state = getInternalState$2(this);

            try {
            try {

-             executor(bind(internalResolve, this, state), bind(internalReject, this, state));
+             executor(bind$8(internalResolve, state), bind$8(internalReject, state));

            } catch (error) {
            } catch (error) {

-             internalReject(this, state, error);
+             internalReject(state, error);

            }
          };
            }
          };

-         // eslint-disable-next-line no-unused-vars
+         PromiseConstructorPrototype = PromiseConstructor.prototype;
+         // eslint-disable-next-line no-unused-vars -- required for `.length`

          Internal = function Promise(executor) {
          Internal = function Promise(executor) {

-           setInternalState$3(this, {
+           setInternalState$4(this, {

              type: PROMISE,
              done: false,
              notified: false,
              type: PROMISE,
              done: false,
              notified: false,


@@ -2797,103 +3456,110 @@
              value: undefined
            });
          };
              value: undefined
            });
          };

-         Internal.prototype = redefineAll(PromiseConstructor.prototype, {
+         Internal.prototype = redefineAll$2(PromiseConstructorPrototype, {

            // `Promise.prototype.then` method
            // `Promise.prototype.then` method

-           // https://tc39.github.io/ecma262/#sec-promise.prototype.then
+           // https://tc39.es/ecma262/#sec-promise.prototype.then

            then: function then(onFulfilled, onRejected) {
              var state = getInternalPromiseState(this);
            then: function then(onFulfilled, onRejected) {
              var state = getInternalPromiseState(this);

-             var reaction = newPromiseCapability$1(speciesConstructor(this, PromiseConstructor));
+             var reaction = newPromiseCapability(speciesConstructor$6(this, PromiseConstructor));

              reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
              reaction.fail = typeof onRejected == 'function' && onRejected;
              reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
              reaction.fail = typeof onRejected == 'function' && onRejected;

-             reaction.domain = IS_NODE$1 ? process$4.domain : undefined;
+             reaction.domain = IS_NODE$1 ? process$1.domain : undefined;

              state.parent = true;
              state.reactions.push(reaction);
              state.parent = true;
              state.reactions.push(reaction);

-             if (state.state != PENDING) notify$1(this, state, false);
+             if (state.state != PENDING) notify(state, false);

              return reaction.promise;
            },
            // `Promise.prototype.catch` method
              return reaction.promise;
            },
            // `Promise.prototype.catch` method

-           // https://tc39.github.io/ecma262/#sec-promise.prototype.catch
+           // https://tc39.es/ecma262/#sec-promise.prototype.catch

            'catch': function (onRejected) {
              return this.then(undefined, onRejected);
            }
          });
          OwnPromiseCapability = function () {
            var promise = new Internal();
            'catch': function (onRejected) {
              return this.then(undefined, onRejected);
            }
          });
          OwnPromiseCapability = function () {
            var promise = new Internal();

-           var state = getInternalState$3(promise);
+           var state = getInternalState$2(promise);

            this.promise = promise;
            this.promise = promise;

-           this.resolve = bind(internalResolve, promise, state);
-           this.reject = bind(internalReject, promise, state);
+           this.resolve = bind$8(internalResolve, state);
+           this.reject = bind$8(internalReject, state);

          };
          };

-         newPromiseCapability.f = newPromiseCapability$1 = function (C) {
+         newPromiseCapabilityModule.f = newPromiseCapability = function (C) {

            return C === PromiseConstructor || C === PromiseWrapper
              ? new OwnPromiseCapability(C)
              : newGenericPromiseCapability(C);
          };
 
            return C === PromiseConstructor || C === PromiseWrapper
              ? new OwnPromiseCapability(C)
              : newGenericPromiseCapability(C);
          };
 

-         if ( typeof nativePromiseConstructor == 'function') {
-           nativeThen = nativePromiseConstructor.prototype.then;
+         if (typeof NativePromise$1 == 'function' && NativePromisePrototype !== Object.prototype) {
+           nativeThen = NativePromisePrototype.then;

 
 

-           // wrap native Promise#then for native async functions
-           redefine(nativePromiseConstructor.prototype, 'then', function then(onFulfilled, onRejected) {
-             var that = this;
-             return new PromiseConstructor(function (resolve, reject) {
-               nativeThen.call(that, resolve, reject);
-             }).then(onFulfilled, onRejected);
-           // https://github.com/zloirock/core-js/issues/640
-           }, { unsafe: true });
+           if (!SUBCLASSING) {
+             // make `Promise#then` return a polyfilled `Promise` for native promise-based APIs
+             redefine$8(NativePromisePrototype, 'then', function then(onFulfilled, onRejected) {
+               var that = this;
+               return new PromiseConstructor(function (resolve, reject) {
+                 nativeThen.call(that, resolve, reject);
+               }).then(onFulfilled, onRejected);
+             // https://github.com/zloirock/core-js/issues/640
+             }, { unsafe: true });

 
 

-           // wrap fetch result
-           if (typeof $fetch == 'function') _export({ global: true, enumerable: true, forced: true }, {
-             // eslint-disable-next-line no-unused-vars
-             fetch: function fetch(input /* , init */) {
-               return promiseResolve(PromiseConstructor, $fetch.apply(global_1, arguments));
-             }
-           });
+             // makes sure that native promise-based APIs `Promise#catch` properly works with patched `Promise#then`
+             redefine$8(NativePromisePrototype, 'catch', PromiseConstructorPrototype['catch'], { unsafe: true });
+           }
+
+           // make `.constructor === Promise` work for native promise-based APIs
+           try {
+             delete NativePromisePrototype.constructor;
+           } catch (error) { /* empty */ }
+
+           // make `instanceof Promise` work for native promise-based APIs
+           if (setPrototypeOf$3) {
+             setPrototypeOf$3(NativePromisePrototype, PromiseConstructorPrototype);
+           }

          }
        }
 
          }
        }
 

-       _export({ global: true, wrap: true, forced: FORCED }, {
+       $$V({ global: true, wrap: true, forced: FORCED$f }, {

          Promise: PromiseConstructor
        });
 
          Promise: PromiseConstructor
        });
 

-       setToStringTag(PromiseConstructor, PROMISE, false);
-       setSpecies(PROMISE);
+       setToStringTag$5(PromiseConstructor, PROMISE, false);
+       setSpecies$3(PROMISE);

 
 

-       PromiseWrapper = getBuiltIn(PROMISE);
+       PromiseWrapper = getBuiltIn$3(PROMISE);

 
        // statics
 
        // statics

-       _export({ target: PROMISE, stat: true, forced: FORCED }, {
+       $$V({ target: PROMISE, stat: true, forced: FORCED$f }, {

          // `Promise.reject` method
          // `Promise.reject` method

-         // https://tc39.github.io/ecma262/#sec-promise.reject
+         // https://tc39.es/ecma262/#sec-promise.reject

          reject: function reject(r) {
          reject: function reject(r) {

-           var capability = newPromiseCapability$1(this);
+           var capability = newPromiseCapability(this);

            capability.reject.call(undefined, r);
            return capability.promise;
          }
        });
 
            capability.reject.call(undefined, r);
            return capability.promise;
          }
        });
 

-       _export({ target: PROMISE, stat: true, forced:  FORCED }, {
+       $$V({ target: PROMISE, stat: true, forced: FORCED$f }, {

          // `Promise.resolve` method
          // `Promise.resolve` method

-         // https://tc39.github.io/ecma262/#sec-promise.resolve
+         // https://tc39.es/ecma262/#sec-promise.resolve

          resolve: function resolve(x) {
          resolve: function resolve(x) {

-           return promiseResolve( this, x);
+           return promiseResolve$1(this, x);

          }
        });
 
          }
        });
 

-       _export({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION }, {
+       $$V({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION$1 }, {

          // `Promise.all` method
          // `Promise.all` method

-         // https://tc39.github.io/ecma262/#sec-promise.all
+         // https://tc39.es/ecma262/#sec-promise.all

          all: function all(iterable) {
            var C = this;
          all: function all(iterable) {
            var C = this;

-           var capability = newPromiseCapability$1(C);
+           var capability = newPromiseCapability(C);

            var resolve = capability.resolve;
            var reject = capability.reject;
            var result = perform(function () {
            var resolve = capability.resolve;
            var reject = capability.reject;
            var result = perform(function () {

-             var $promiseResolve = aFunction$1(C.resolve);
+             var $promiseResolve = aFunction$5(C.resolve);

              var values = [];
              var counter = 0;
              var remaining = 1;
              var values = [];
              var counter = 0;
              var remaining = 1;

-             iterate_1(iterable, function (promise) {
+             iterate$2(iterable, function (promise) {

                var index = counter++;
                var alreadyCalled = false;
                values.push(undefined);
                var index = counter++;
                var alreadyCalled = false;
                values.push(undefined);


@@ -2911,14 +3577,14 @@
            return capability.promise;
          },
          // `Promise.race` method
            return capability.promise;
          },
          // `Promise.race` method

-         // https://tc39.github.io/ecma262/#sec-promise.race
+         // https://tc39.es/ecma262/#sec-promise.race

          race: function race(iterable) {
            var C = this;
          race: function race(iterable) {
            var C = this;

-           var capability = newPromiseCapability$1(C);
+           var capability = newPromiseCapability(C);

            var reject = capability.reject;
            var result = perform(function () {
            var reject = capability.reject;
            var result = perform(function () {

-             var $promiseResolve = aFunction$1(C.resolve);
-             iterate_1(iterable, function (promise) {
+             var $promiseResolve = aFunction$5(C.resolve);
+             iterate$2(iterable, function (promise) {

                $promiseResolve.call(C, promise).then(capability.resolve, reject);
              });
            });
                $promiseResolve.call(C, promise).then(capability.resolve, reject);
              });
            });


@@ -2927,1510 +3593,1048 @@
          }
        });
 
          }
        });
 

-       // `RegExp.prototype.flags` getter implementation
-       // https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
-       var regexpFlags = function () {
-         var that = anObject(this);
-         var result = '';
-         if (that.global) result += 'g';
-         if (that.ignoreCase) result += 'i';
-         if (that.multiline) result += 'm';
-         if (that.dotAll) result += 's';
-         if (that.unicode) result += 'u';
-         if (that.sticky) result += 'y';
+       var typedArrayConstructor = {exports: {}};
+
+       /* eslint-disable no-new -- required for testing */
+
+       var global$g = global$F;
+       var fails$y = fails$N;
+       var checkCorrectnessOfIteration$2 = checkCorrectnessOfIteration$4;
+       var NATIVE_ARRAY_BUFFER_VIEWS$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
+
+       var ArrayBuffer$2 = global$g.ArrayBuffer;
+       var Int8Array$2 = global$g.Int8Array;
+
+       var typedArrayConstructorsRequireWrappers = !NATIVE_ARRAY_BUFFER_VIEWS$1 || !fails$y(function () {
+         Int8Array$2(1);
+       }) || !fails$y(function () {
+         new Int8Array$2(-1);
+       }) || !checkCorrectnessOfIteration$2(function (iterable) {
+         new Int8Array$2();
+         new Int8Array$2(null);
+         new Int8Array$2(1.5);
+         new Int8Array$2(iterable);
+       }, true) || fails$y(function () {
+         // Safari (11+) bug - a reason why even Safari 13 should load a typed array polyfill
+         return new Int8Array$2(new ArrayBuffer$2(2), 1, undefined).length !== 1;
+       });
+
+       var toInteger$5 = toInteger$b;
+
+       var toPositiveInteger$1 = function (it) {
+         var result = toInteger$5(it);
+         if (result < 0) throw RangeError("The argument can't be less than 0");

          return result;
        };
 
          return result;
        };
 

-       // babel-minify transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError,
-       // so we use an intermediate function.
-       function RE(s, f) {
-         return RegExp(s, f);
-       }
+       var toPositiveInteger = toPositiveInteger$1;

 
 

-       var UNSUPPORTED_Y = fails(function () {
-         // babel-minify transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError
-         var re = RE('a', 'y');
-         re.lastIndex = 2;
-         return re.exec('abcd') != null;
-       });
+       var toOffset$2 = function (it, BYTES) {
+         var offset = toPositiveInteger(it);
+         if (offset % BYTES) throw RangeError('Wrong offset');
+         return offset;
+       };

 
 

-       var BROKEN_CARET = fails(function () {
-         // https://bugzilla.mozilla.org/show_bug.cgi?id=773687
-         var re = RE('^r', 'gy');
-         re.lastIndex = 2;
-         return re.exec('str') != null;
-       });
+       var toObject$c = toObject$i;
+       var toLength$i = toLength$q;
+       var getIteratorMethod$3 = getIteratorMethod$5;
+       var isArrayIteratorMethod$1 = isArrayIteratorMethod$3;
+       var bind$7 = functionBindContext;
+       var aTypedArrayConstructor$4 = arrayBufferViewCore.aTypedArrayConstructor;

 
 

-       var regexpStickyHelpers = {
-               UNSUPPORTED_Y: UNSUPPORTED_Y,
-               BROKEN_CARET: BROKEN_CARET
+       var typedArrayFrom$2 = function from(source /* , mapfn, thisArg */) {
+         var O = toObject$c(source);
+         var argumentsLength = arguments.length;
+         var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
+         var mapping = mapfn !== undefined;
+         var iteratorMethod = getIteratorMethod$3(O);
+         var i, length, result, step, iterator, next;
+         if (iteratorMethod != undefined && !isArrayIteratorMethod$1(iteratorMethod)) {
+           iterator = iteratorMethod.call(O);
+           next = iterator.next;
+           O = [];
+           while (!(step = next.call(iterator)).done) {
+             O.push(step.value);
+           }
+         }
+         if (mapping && argumentsLength > 2) {
+           mapfn = bind$7(mapfn, arguments[2], 2);
+         }
+         length = toLength$i(O.length);
+         result = new (aTypedArrayConstructor$4(this))(length);
+         for (i = 0; length > i; i++) {
+           result[i] = mapping ? mapfn(O[i], i) : O[i];
+         }
+         return result;

        };
 
        };
 

-       var nativeExec = RegExp.prototype.exec;
-       // This always refers to the native implementation, because the
-       // String#replace polyfill uses ./fix-regexp-well-known-symbol-logic.js,
-       // which loads this file before patching the method.
-       var nativeReplace = String.prototype.replace;
+       var isObject$f = isObject$r;
+       var setPrototypeOf$2 = objectSetPrototypeOf;

 
 

-       var patchedExec = nativeExec;
+       // makes subclassing work correct for wrapped built-ins
+       var inheritIfRequired$4 = function ($this, dummy, Wrapper) {
+         var NewTarget, NewTargetPrototype;
+         if (
+           // it can work only with native `setPrototypeOf`
+           setPrototypeOf$2 &&
+           // we haven't completely correct pre-ES6 way for getting `new.target`, so use this
+           typeof (NewTarget = dummy.constructor) == 'function' &&
+           NewTarget !== Wrapper &&
+           isObject$f(NewTargetPrototype = NewTarget.prototype) &&
+           NewTargetPrototype !== Wrapper.prototype
+         ) setPrototypeOf$2($this, NewTargetPrototype);
+         return $this;
+       };

 
 

-       var UPDATES_LAST_INDEX_WRONG = (function () {
-         var re1 = /a/;
-         var re2 = /b*/g;
-         nativeExec.call(re1, 'a');
-         nativeExec.call(re2, 'a');
-         return re1.lastIndex !== 0 || re2.lastIndex !== 0;
-       })();
+       var $$U = _export;
+       var global$f = global$F;
+       var DESCRIPTORS$c = descriptors;
+       var TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS$1 = typedArrayConstructorsRequireWrappers;
+       var ArrayBufferViewCore$m = arrayBufferViewCore;
+       var ArrayBufferModule = arrayBuffer;
+       var anInstance$4 = anInstance$7;
+       var createPropertyDescriptor$2 = createPropertyDescriptor$7;
+       var createNonEnumerableProperty$2 = createNonEnumerableProperty$e;
+       var toLength$h = toLength$q;
+       var toIndex = toIndex$2;
+       var toOffset$1 = toOffset$2;
+       var toPrimitive$3 = toPrimitive$7;
+       var has$5 = has$j;
+       var classof$5 = classof$b;
+       var isObject$e = isObject$r;
+       var create$9 = objectCreate;
+       var setPrototypeOf$1 = objectSetPrototypeOf;
+       var getOwnPropertyNames$2 = objectGetOwnPropertyNames.f;
+       var typedArrayFrom$1 = typedArrayFrom$2;
+       var forEach$1 = arrayIteration.forEach;
+       var setSpecies$2 = setSpecies$5;
+       var definePropertyModule$1 = objectDefineProperty;
+       var getOwnPropertyDescriptorModule$1 = objectGetOwnPropertyDescriptor;
+       var InternalStateModule$3 = internalState;
+       var inheritIfRequired$3 = inheritIfRequired$4;
+
+       var getInternalState$1 = InternalStateModule$3.get;
+       var setInternalState$3 = InternalStateModule$3.set;
+       var nativeDefineProperty = definePropertyModule$1.f;
+       var nativeGetOwnPropertyDescriptor$1 = getOwnPropertyDescriptorModule$1.f;
+       var round = Math.round;
+       var RangeError$1 = global$f.RangeError;
+       var ArrayBuffer$1 = ArrayBufferModule.ArrayBuffer;
+       var DataView$1 = ArrayBufferModule.DataView;
+       var NATIVE_ARRAY_BUFFER_VIEWS = ArrayBufferViewCore$m.NATIVE_ARRAY_BUFFER_VIEWS;
+       var TYPED_ARRAY_TAG = ArrayBufferViewCore$m.TYPED_ARRAY_TAG;
+       var TypedArray = ArrayBufferViewCore$m.TypedArray;
+       var TypedArrayPrototype = ArrayBufferViewCore$m.TypedArrayPrototype;
+       var aTypedArrayConstructor$3 = ArrayBufferViewCore$m.aTypedArrayConstructor;
+       var isTypedArray = ArrayBufferViewCore$m.isTypedArray;
+       var BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';
+       var WRONG_LENGTH = 'Wrong length';

 
 

-       var UNSUPPORTED_Y$1 = regexpStickyHelpers.UNSUPPORTED_Y || regexpStickyHelpers.BROKEN_CARET;
+       var fromList = function (C, list) {
+         var index = 0;
+         var length = list.length;
+         var result = new (aTypedArrayConstructor$3(C))(length);
+         while (length > index) result[index] = list[index++];
+         return result;
+       };

 
 

-       // nonparticipating capturing group, copied from es5-shim's String#split patch.
-       var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;
+       var addGetter = function (it, key) {
+         nativeDefineProperty(it, key, { get: function () {
+           return getInternalState$1(this)[key];
+         } });
+       };

 
 

-       var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y$1;
+       var isArrayBuffer = function (it) {
+         var klass;
+         return it instanceof ArrayBuffer$1 || (klass = classof$5(it)) == 'ArrayBuffer' || klass == 'SharedArrayBuffer';
+       };

 
 

-       if (PATCH) {
-         patchedExec = function exec(str) {
-           var re = this;
-           var lastIndex, reCopy, match, i;
-           var sticky = UNSUPPORTED_Y$1 && re.sticky;
-           var flags = regexpFlags.call(re);
-           var source = re.source;
-           var charsAdded = 0;
-           var strCopy = str;
+       var isTypedArrayIndex = function (target, key) {
+         return isTypedArray(target)
+           && typeof key != 'symbol'
+           && key in target
+           && String(+key) == String(key);
+       };

 
 

-           if (sticky) {
-             flags = flags.replace('y', '');
-             if (flags.indexOf('g') === -1) {
-               flags += 'g';
-             }
+       var wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {
+         return isTypedArrayIndex(target, key = toPrimitive$3(key, true))
+           ? createPropertyDescriptor$2(2, target[key])
+           : nativeGetOwnPropertyDescriptor$1(target, key);
+       };

 
 

-             strCopy = String(str).slice(re.lastIndex);
-             // Support anchored sticky behavior.
-             if (re.lastIndex > 0 && (!re.multiline || re.multiline && str[re.lastIndex - 1] !== '\n')) {
-               source = '(?: ' + source + ')';
-               strCopy = ' ' + strCopy;
-               charsAdded++;
-             }
-             // ^(? + rx + ) is needed, in combination with some str slicing, to
-             // simulate the 'y' flag.
-             reCopy = new RegExp('^(?:' + source + ')', flags);
+       var wrappedDefineProperty = function defineProperty(target, key, descriptor) {
+         if (isTypedArrayIndex(target, key = toPrimitive$3(key, true))
+           && isObject$e(descriptor)
+           && has$5(descriptor, 'value')
+           && !has$5(descriptor, 'get')
+           && !has$5(descriptor, 'set')
+           // TODO: add validation descriptor w/o calling accessors
+           && !descriptor.configurable
+           && (!has$5(descriptor, 'writable') || descriptor.writable)
+           && (!has$5(descriptor, 'enumerable') || descriptor.enumerable)
+         ) {
+           target[key] = descriptor.value;
+           return target;
+         } return nativeDefineProperty(target, key, descriptor);
+       };
+
+       if (DESCRIPTORS$c) {
+         if (!NATIVE_ARRAY_BUFFER_VIEWS) {
+           getOwnPropertyDescriptorModule$1.f = wrappedGetOwnPropertyDescriptor;
+           definePropertyModule$1.f = wrappedDefineProperty;
+           addGetter(TypedArrayPrototype, 'buffer');
+           addGetter(TypedArrayPrototype, 'byteOffset');
+           addGetter(TypedArrayPrototype, 'byteLength');
+           addGetter(TypedArrayPrototype, 'length');
+         }
+
+         $$U({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
+           getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,
+           defineProperty: wrappedDefineProperty
+         });
+
+         typedArrayConstructor.exports = function (TYPE, wrapper, CLAMPED) {
+           var BYTES = TYPE.match(/\d+$/)[0] / 8;
+           var CONSTRUCTOR_NAME = TYPE + (CLAMPED ? 'Clamped' : '') + 'Array';
+           var GETTER = 'get' + TYPE;
+           var SETTER = 'set' + TYPE;
+           var NativeTypedArrayConstructor = global$f[CONSTRUCTOR_NAME];
+           var TypedArrayConstructor = NativeTypedArrayConstructor;
+           var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;
+           var exported = {};
+
+           var getter = function (that, index) {
+             var data = getInternalState$1(that);
+             return data.view[GETTER](index * BYTES + data.byteOffset, true);
+           };
+
+           var setter = function (that, index, value) {
+             var data = getInternalState$1(that);
+             if (CLAMPED) value = (value = round(value)) < 0 ? 0 : value > 0xFF ? 0xFF : value & 0xFF;
+             data.view[SETTER](index * BYTES + data.byteOffset, value, true);
+           };
+
+           var addElement = function (that, index) {
+             nativeDefineProperty(that, index, {
+               get: function () {
+                 return getter(this, index);
+               },
+               set: function (value) {
+                 return setter(this, index, value);
+               },
+               enumerable: true
+             });
+           };
+
+           if (!NATIVE_ARRAY_BUFFER_VIEWS) {
+             TypedArrayConstructor = wrapper(function (that, data, offset, $length) {
+               anInstance$4(that, TypedArrayConstructor, CONSTRUCTOR_NAME);
+               var index = 0;
+               var byteOffset = 0;
+               var buffer, byteLength, length;
+               if (!isObject$e(data)) {
+                 length = toIndex(data);
+                 byteLength = length * BYTES;
+                 buffer = new ArrayBuffer$1(byteLength);
+               } else if (isArrayBuffer(data)) {
+                 buffer = data;
+                 byteOffset = toOffset$1(offset, BYTES);
+                 var $len = data.byteLength;
+                 if ($length === undefined) {
+                   if ($len % BYTES) throw RangeError$1(WRONG_LENGTH);
+                   byteLength = $len - byteOffset;
+                   if (byteLength < 0) throw RangeError$1(WRONG_LENGTH);
+                 } else {
+                   byteLength = toLength$h($length) * BYTES;
+                   if (byteLength + byteOffset > $len) throw RangeError$1(WRONG_LENGTH);
+                 }
+                 length = byteLength / BYTES;
+               } else if (isTypedArray(data)) {
+                 return fromList(TypedArrayConstructor, data);
+               } else {
+                 return typedArrayFrom$1.call(TypedArrayConstructor, data);
+               }
+               setInternalState$3(that, {
+                 buffer: buffer,
+                 byteOffset: byteOffset,
+                 byteLength: byteLength,
+                 length: length,
+                 view: new DataView$1(buffer)
+               });
+               while (index < length) addElement(that, index++);
+             });
+
+             if (setPrototypeOf$1) setPrototypeOf$1(TypedArrayConstructor, TypedArray);
+             TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = create$9(TypedArrayPrototype);
+           } else if (TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS$1) {
+             TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {
+               anInstance$4(dummy, TypedArrayConstructor, CONSTRUCTOR_NAME);
+               return inheritIfRequired$3(function () {
+                 if (!isObject$e(data)) return new NativeTypedArrayConstructor(toIndex(data));
+                 if (isArrayBuffer(data)) return $length !== undefined
+                   ? new NativeTypedArrayConstructor(data, toOffset$1(typedArrayOffset, BYTES), $length)
+                   : typedArrayOffset !== undefined
+                     ? new NativeTypedArrayConstructor(data, toOffset$1(typedArrayOffset, BYTES))
+                     : new NativeTypedArrayConstructor(data);
+                 if (isTypedArray(data)) return fromList(TypedArrayConstructor, data);
+                 return typedArrayFrom$1.call(TypedArrayConstructor, data);
+               }(), dummy, TypedArrayConstructor);
+             });
+
+             if (setPrototypeOf$1) setPrototypeOf$1(TypedArrayConstructor, TypedArray);
+             forEach$1(getOwnPropertyNames$2(NativeTypedArrayConstructor), function (key) {
+               if (!(key in TypedArrayConstructor)) {
+                 createNonEnumerableProperty$2(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
+               }
+             });
+             TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;

            }
 
            }
 

-           if (NPCG_INCLUDED) {
-             reCopy = new RegExp('^' + source + '$(?!\\s)', flags);
+           if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);

            }
            }

-           if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;

 
 

-           match = nativeExec.call(sticky ? reCopy : re, strCopy);
+           if (TYPED_ARRAY_TAG) {
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);
+           }

 
 

-           if (sticky) {
-             if (match) {
-               match.input = match.input.slice(charsAdded);
-               match[0] = match[0].slice(charsAdded);
-               match.index = re.lastIndex;
-               re.lastIndex += match[0].length;
-             } else re.lastIndex = 0;
-           } else if (UPDATES_LAST_INDEX_WRONG && match) {
-             re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
+           exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;
+
+           $$U({
+             global: true, forced: TypedArrayConstructor != NativeTypedArrayConstructor, sham: !NATIVE_ARRAY_BUFFER_VIEWS
+           }, exported);
+
+           if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {
+             createNonEnumerableProperty$2(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);

            }
            }

-           if (NPCG_INCLUDED && match && match.length > 1) {
-             // Fix browsers whose `exec` methods don't consistently return `undefined`
-             // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
-             nativeReplace.call(match[0], reCopy, function () {
-               for (i = 1; i < arguments.length - 2; i++) {
-                 if (arguments[i] === undefined) match[i] = undefined;
-               }
-             });
+
+           if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);

            }
 
            }
 

-           return match;
+           setSpecies$2(CONSTRUCTOR_NAME);

          };
          };

-       }
+       } else typedArrayConstructor.exports = function () { /* empty */ };

 
 

-       var regexpExec = patchedExec;
+       var createTypedArrayConstructor$1 = typedArrayConstructor.exports;

 
 

-       _export({ target: 'RegExp', proto: true, forced: /./.exec !== regexpExec }, {
-         exec: regexpExec
+       // `Uint8Array` constructor
+       // https://tc39.es/ecma262/#sec-typedarray-objects
+       createTypedArrayConstructor$1('Uint8', function (init) {
+         return function Uint8Array(data, byteOffset, length) {
+           return init(this, data, byteOffset, length);
+         };

        });
 
        });
 

-       var TO_STRING$1 = 'toString';
-       var RegExpPrototype = RegExp.prototype;
-       var nativeToString = RegExpPrototype[TO_STRING$1];
-
-       var NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
-       // FF44- RegExp#toString has a wrong name
-       var INCORRECT_NAME = nativeToString.name != TO_STRING$1;
+       var toObject$b = toObject$i;
+       var toAbsoluteIndex$4 = toAbsoluteIndex$8;
+       var toLength$g = toLength$q;

 
 

-       // `RegExp.prototype.toString` method
-       // https://tc39.github.io/ecma262/#sec-regexp.prototype.tostring
-       if (NOT_GENERIC || INCORRECT_NAME) {
-         redefine(RegExp.prototype, TO_STRING$1, function toString() {
-           var R = anObject(this);
-           var p = String(R.source);
-           var rf = R.flags;
-           var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? regexpFlags.call(R) : rf);
-           return '/' + p + '/' + f;
-         }, { unsafe: true });
-       }
+       var min$7 = Math.min;

 
 

-       // `String.prototype.{ codePointAt, at }` methods implementation
-       var createMethod$2 = function (CONVERT_TO_STRING) {
-         return function ($this, pos) {
-           var S = String(requireObjectCoercible($this));
-           var position = toInteger(pos);
-           var size = S.length;
-           var first, second;
-           if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
-           first = S.charCodeAt(position);
-           return first < 0xD800 || first > 0xDBFF || position + 1 === size
-             || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF
-               ? CONVERT_TO_STRING ? S.charAt(position) : first
-               : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
-         };
+       // `Array.prototype.copyWithin` method implementation
+       // https://tc39.es/ecma262/#sec-array.prototype.copywithin
+       // eslint-disable-next-line es/no-array-prototype-copywithin -- safe
+       var arrayCopyWithin = [].copyWithin || function copyWithin(target /* = 0 */, start /* = 0, end = @length */) {
+         var O = toObject$b(this);
+         var len = toLength$g(O.length);
+         var to = toAbsoluteIndex$4(target, len);
+         var from = toAbsoluteIndex$4(start, len);
+         var end = arguments.length > 2 ? arguments[2] : undefined;
+         var count = min$7((end === undefined ? len : toAbsoluteIndex$4(end, len)) - from, len - to);
+         var inc = 1;
+         if (from < to && to < from + count) {
+           inc = -1;
+           from += count - 1;
+           to += count - 1;
+         }
+         while (count-- > 0) {
+           if (from in O) O[to] = O[from];
+           else delete O[to];
+           to += inc;
+           from += inc;
+         } return O;

        };
 
        };
 

-       var stringMultibyte = {
-         // `String.prototype.codePointAt` method
-         // https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
-         codeAt: createMethod$2(false),
-         // `String.prototype.at` method
-         // https://github.com/mathiasbynens/String.prototype.at
-         charAt: createMethod$2(true)
-       };
+       var ArrayBufferViewCore$l = arrayBufferViewCore;
+       var $copyWithin = arrayCopyWithin;

 
 

-       var charAt = stringMultibyte.charAt;
+       var aTypedArray$l = ArrayBufferViewCore$l.aTypedArray;
+       var exportTypedArrayMethod$m = ArrayBufferViewCore$l.exportTypedArrayMethod;

 
 

+       // `%TypedArray%.prototype.copyWithin` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.copywithin
+       exportTypedArrayMethod$m('copyWithin', function copyWithin(target, start /* , end */) {
+         return $copyWithin.call(aTypedArray$l(this), target, start, arguments.length > 2 ? arguments[2] : undefined);
+       });

 
 

+       var ArrayBufferViewCore$k = arrayBufferViewCore;
+       var $every$1 = arrayIteration.every;

 
 

-       var STRING_ITERATOR = 'String Iterator';
-       var setInternalState$4 = internalState.set;
-       var getInternalState$4 = internalState.getterFor(STRING_ITERATOR);
+       var aTypedArray$k = ArrayBufferViewCore$k.aTypedArray;
+       var exportTypedArrayMethod$l = ArrayBufferViewCore$k.exportTypedArrayMethod;

 
 

-       // `String.prototype[@@iterator]` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator
-       defineIterator(String, 'String', function (iterated) {
-         setInternalState$4(this, {
-           type: STRING_ITERATOR,
-           string: String(iterated),
-           index: 0
-         });
-       // `%StringIteratorPrototype%.next` method
-       // https://tc39.github.io/ecma262/#sec-%stringiteratorprototype%.next
-       }, function next() {
-         var state = getInternalState$4(this);
-         var string = state.string;
-         var index = state.index;
-         var point;
-         if (index >= string.length) return { value: undefined, done: true };
-         point = charAt(string, index);
-         state.index += point.length;
-         return { value: point, done: false };
+       // `%TypedArray%.prototype.every` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.every
+       exportTypedArrayMethod$l('every', function every(callbackfn /* , thisArg */) {
+         return $every$1(aTypedArray$k(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);

        });
 
        });
 

-       // TODO: Remove from `core-js@4` since it's moved to entry points
+       var ArrayBufferViewCore$j = arrayBufferViewCore;
+       var $fill = arrayFill$1;

 
 

+       var aTypedArray$j = ArrayBufferViewCore$j.aTypedArray;
+       var exportTypedArrayMethod$k = ArrayBufferViewCore$j.exportTypedArrayMethod;

 
 

+       // `%TypedArray%.prototype.fill` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.fill
+       // eslint-disable-next-line no-unused-vars -- required for `.length`
+       exportTypedArrayMethod$k('fill', function fill(value /* , start, end */) {
+         return $fill.apply(aTypedArray$j(this), arguments);
+       });
+
+       var aTypedArrayConstructor$2 = arrayBufferViewCore.aTypedArrayConstructor;
+       var speciesConstructor$5 = speciesConstructor$8;
+
+       var typedArrayFromSpeciesAndList = function (instance, list) {
+         var C = speciesConstructor$5(instance, instance.constructor);
+         var index = 0;
+         var length = list.length;
+         var result = new (aTypedArrayConstructor$2(C))(length);
+         while (length > index) result[index] = list[index++];
+         return result;
+       };

 
 

+       var ArrayBufferViewCore$i = arrayBufferViewCore;
+       var $filter$1 = arrayIteration.filter;
+       var fromSpeciesAndList = typedArrayFromSpeciesAndList;

 
 

+       var aTypedArray$i = ArrayBufferViewCore$i.aTypedArray;
+       var exportTypedArrayMethod$j = ArrayBufferViewCore$i.exportTypedArrayMethod;

 
 

+       // `%TypedArray%.prototype.filter` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.filter
+       exportTypedArrayMethod$j('filter', function filter(callbackfn /* , thisArg */) {
+         var list = $filter$1(aTypedArray$i(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+         return fromSpeciesAndList(this, list);
+       });

 
 

+       var ArrayBufferViewCore$h = arrayBufferViewCore;
+       var $find$1 = arrayIteration.find;

 
 

-       var SPECIES$6 = wellKnownSymbol('species');
+       var aTypedArray$h = ArrayBufferViewCore$h.aTypedArray;
+       var exportTypedArrayMethod$i = ArrayBufferViewCore$h.exportTypedArrayMethod;

 
 

-       var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
-         // #replace needs built-in support for named groups.
-         // #match works fine because it just return the exec results, even if it has
-         // a "grops" property.
-         var re = /./;
-         re.exec = function () {
-           var result = [];
-           result.groups = { a: '7' };
-           return result;
-         };
-         return ''.replace(re, '$<a>') !== '7';
+       // `%TypedArray%.prototype.find` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.find
+       exportTypedArrayMethod$i('find', function find(predicate /* , thisArg */) {
+         return $find$1(aTypedArray$h(this), predicate, arguments.length > 1 ? arguments[1] : undefined);

        });
 
        });
 

-       // IE <= 11 replaces $0 with the whole match, as if it was $&
-       // https://stackoverflow.com/questions/6024666/getting-ie-to-replace-a-regex-with-the-literal-string-0
-       var REPLACE_KEEPS_$0 = (function () {
-         return 'a'.replace(/./, '$0') === '$0';
-       })();
+       var ArrayBufferViewCore$g = arrayBufferViewCore;
+       var $findIndex$1 = arrayIteration.findIndex;

 
 

-       var REPLACE = wellKnownSymbol('replace');
-       // Safari <= 13.0.3(?) substitutes nth capture where n>m with an empty string
-       var REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE = (function () {
-         if (/./[REPLACE]) {
-           return /./[REPLACE]('a', '$0') === '';
-         }
-         return false;
-       })();
+       var aTypedArray$g = ArrayBufferViewCore$g.aTypedArray;
+       var exportTypedArrayMethod$h = ArrayBufferViewCore$g.exportTypedArrayMethod;

 
 

-       // Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
-       // Weex JS has frozen built-in prototypes, so use try / catch wrapper
-       var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
-         var re = /(?:)/;
-         var originalExec = re.exec;
-         re.exec = function () { return originalExec.apply(this, arguments); };
-         var result = 'ab'.split(re);
-         return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
+       // `%TypedArray%.prototype.findIndex` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.findindex
+       exportTypedArrayMethod$h('findIndex', function findIndex(predicate /* , thisArg */) {
+         return $findIndex$1(aTypedArray$g(this), predicate, arguments.length > 1 ? arguments[1] : undefined);

        });
 
        });
 

-       var fixRegexpWellKnownSymbolLogic = function (KEY, length, exec, sham) {
-         var SYMBOL = wellKnownSymbol(KEY);
+       var ArrayBufferViewCore$f = arrayBufferViewCore;
+       var $forEach = arrayIteration.forEach;

 
 

-         var DELEGATES_TO_SYMBOL = !fails(function () {
-           // String methods call symbol-named RegEp methods
-           var O = {};
-           O[SYMBOL] = function () { return 7; };
-           return ''[KEY](O) != 7;
-         });
+       var aTypedArray$f = ArrayBufferViewCore$f.aTypedArray;
+       var exportTypedArrayMethod$g = ArrayBufferViewCore$f.exportTypedArrayMethod;

 
 

-         var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
-           // Symbol-named RegExp methods call .exec
-           var execCalled = false;
-           var re = /a/;
+       // `%TypedArray%.prototype.forEach` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.foreach
+       exportTypedArrayMethod$g('forEach', function forEach(callbackfn /* , thisArg */) {
+         $forEach(aTypedArray$f(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+       });

 
 

-           if (KEY === 'split') {
-             // We can't use real regex here since it causes deoptimization
-             // and serious performance degradation in V8
-             // https://github.com/zloirock/core-js/issues/306
-             re = {};
-             // RegExp[@@split] doesn't call the regex's exec method, but first creates
-             // a new one. We need to return the patched regex when creating the new one.
-             re.constructor = {};
-             re.constructor[SPECIES$6] = function () { return re; };
-             re.flags = '';
-             re[SYMBOL] = /./[SYMBOL];
-           }
+       var ArrayBufferViewCore$e = arrayBufferViewCore;
+       var $includes$1 = arrayIncludes.includes;

 
 

-           re.exec = function () { execCalled = true; return null; };
+       var aTypedArray$e = ArrayBufferViewCore$e.aTypedArray;
+       var exportTypedArrayMethod$f = ArrayBufferViewCore$e.exportTypedArrayMethod;

 
 

-           re[SYMBOL]('');
-           return !execCalled;
-         });
+       // `%TypedArray%.prototype.includes` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.includes
+       exportTypedArrayMethod$f('includes', function includes(searchElement /* , fromIndex */) {
+         return $includes$1(aTypedArray$e(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
+       });

 
 

-         if (
-           !DELEGATES_TO_SYMBOL ||
-           !DELEGATES_TO_EXEC ||
-           (KEY === 'replace' && !(
-             REPLACE_SUPPORTS_NAMED_GROUPS &&
-             REPLACE_KEEPS_$0 &&
-             !REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE
-           )) ||
-           (KEY === 'split' && !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC)
-         ) {
-           var nativeRegExpMethod = /./[SYMBOL];
-           var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
-             if (regexp.exec === regexpExec) {
-               if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
-                 // The native String method already delegates to @@method (this
-                 // polyfilled function), leasing to infinite recursion.
-                 // We avoid it by directly calling the native @@method method.
-                 return { done: true, value: nativeRegExpMethod.call(regexp, str, arg2) };
-               }
-               return { done: true, value: nativeMethod.call(str, regexp, arg2) };
-             }
-             return { done: false };
-           }, {
-             REPLACE_KEEPS_$0: REPLACE_KEEPS_$0,
-             REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE: REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE
-           });
-           var stringMethod = methods[0];
-           var regexMethod = methods[1];
-
-           redefine(String.prototype, KEY, stringMethod);
-           redefine(RegExp.prototype, SYMBOL, length == 2
-             // 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
-             // 21.2.5.11 RegExp.prototype[@@split](string, limit)
-             ? function (string, arg) { return regexMethod.call(string, this, arg); }
-             // 21.2.5.6 RegExp.prototype[@@match](string)
-             // 21.2.5.9 RegExp.prototype[@@search](string)
-             : function (string) { return regexMethod.call(string, this); }
-           );
-         }
+       var ArrayBufferViewCore$d = arrayBufferViewCore;
+       var $indexOf = arrayIncludes.indexOf;

 
 

-         if (sham) createNonEnumerableProperty(RegExp.prototype[SYMBOL], 'sham', true);
-       };
+       var aTypedArray$d = ArrayBufferViewCore$d.aTypedArray;
+       var exportTypedArrayMethod$e = ArrayBufferViewCore$d.exportTypedArrayMethod;

 
 

-       var charAt$1 = stringMultibyte.charAt;
+       // `%TypedArray%.prototype.indexOf` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.indexof
+       exportTypedArrayMethod$e('indexOf', function indexOf(searchElement /* , fromIndex */) {
+         return $indexOf(aTypedArray$d(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
+       });

 
 

-       // `AdvanceStringIndex` abstract operation
-       // https://tc39.github.io/ecma262/#sec-advancestringindex
-       var advanceStringIndex = function (S, index, unicode) {
-         return index + (unicode ? charAt$1(S, index).length : 1);
-       };
+       var global$e = global$F;
+       var ArrayBufferViewCore$c = arrayBufferViewCore;
+       var ArrayIterators = es_array_iterator;
+       var wellKnownSymbol$9 = wellKnownSymbol$s;

 
 

-       // `RegExpExec` abstract operation
-       // https://tc39.github.io/ecma262/#sec-regexpexec
-       var regexpExecAbstract = function (R, S) {
-         var exec = R.exec;
-         if (typeof exec === 'function') {
-           var result = exec.call(R, S);
-           if (typeof result !== 'object') {
-             throw TypeError('RegExp exec method returned something other than an Object or null');
-           }
-           return result;
-         }
+       var ITERATOR$2 = wellKnownSymbol$9('iterator');
+       var Uint8Array$2 = global$e.Uint8Array;
+       var arrayValues = ArrayIterators.values;
+       var arrayKeys = ArrayIterators.keys;
+       var arrayEntries = ArrayIterators.entries;
+       var aTypedArray$c = ArrayBufferViewCore$c.aTypedArray;
+       var exportTypedArrayMethod$d = ArrayBufferViewCore$c.exportTypedArrayMethod;
+       var nativeTypedArrayIterator = Uint8Array$2 && Uint8Array$2.prototype[ITERATOR$2];

 
 

-         if (classofRaw(R) !== 'RegExp') {
-           throw TypeError('RegExp#exec called on incompatible receiver');
-         }
+       var CORRECT_ITER_NAME = !!nativeTypedArrayIterator
+         && (nativeTypedArrayIterator.name == 'values' || nativeTypedArrayIterator.name == undefined);

 
 

-         return regexpExec.call(R, S);
+       var typedArrayValues = function values() {
+         return arrayValues.call(aTypedArray$c(this));

        };
 
        };
 

-       var max$2 = Math.max;
-       var min$2 = Math.min;
-       var floor$2 = Math.floor;
-       var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d\d?|<[^>]*>)/g;
-       var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d\d?)/g;
+       // `%TypedArray%.prototype.entries` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.entries
+       exportTypedArrayMethod$d('entries', function entries() {
+         return arrayEntries.call(aTypedArray$c(this));
+       });
+       // `%TypedArray%.prototype.keys` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.keys
+       exportTypedArrayMethod$d('keys', function keys() {
+         return arrayKeys.call(aTypedArray$c(this));
+       });
+       // `%TypedArray%.prototype.values` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.values
+       exportTypedArrayMethod$d('values', typedArrayValues, !CORRECT_ITER_NAME);
+       // `%TypedArray%.prototype[@@iterator]` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype-@@iterator
+       exportTypedArrayMethod$d(ITERATOR$2, typedArrayValues, !CORRECT_ITER_NAME);

 
 

-       var maybeToString = function (it) {
-         return it === undefined ? it : String(it);
-       };
+       var ArrayBufferViewCore$b = arrayBufferViewCore;

 
 

-       // @@replace logic
-       fixRegexpWellKnownSymbolLogic('replace', 2, function (REPLACE, nativeReplace, maybeCallNative, reason) {
-         var REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE = reason.REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE;
-         var REPLACE_KEEPS_$0 = reason.REPLACE_KEEPS_$0;
-         var UNSAFE_SUBSTITUTE = REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE ? '$' : '$0';
+       var aTypedArray$b = ArrayBufferViewCore$b.aTypedArray;
+       var exportTypedArrayMethod$c = ArrayBufferViewCore$b.exportTypedArrayMethod;
+       var $join = [].join;

 
 

-         return [
-           // `String.prototype.replace` method
-           // https://tc39.github.io/ecma262/#sec-string.prototype.replace
-           function replace(searchValue, replaceValue) {
-             var O = requireObjectCoercible(this);
-             var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
-             return replacer !== undefined
-               ? replacer.call(searchValue, O, replaceValue)
-               : nativeReplace.call(String(O), searchValue, replaceValue);
-           },
-           // `RegExp.prototype[@@replace]` method
-           // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace
-           function (regexp, replaceValue) {
-             if (
-               (!REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE && REPLACE_KEEPS_$0) ||
-               (typeof replaceValue === 'string' && replaceValue.indexOf(UNSAFE_SUBSTITUTE) === -1)
-             ) {
-               var res = maybeCallNative(nativeReplace, regexp, this, replaceValue);
-               if (res.done) return res.value;
-             }
+       // `%TypedArray%.prototype.join` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.join
+       // eslint-disable-next-line no-unused-vars -- required for `.length`
+       exportTypedArrayMethod$c('join', function join(separator) {
+         return $join.apply(aTypedArray$b(this), arguments);
+       });

 
 

-             var rx = anObject(regexp);
-             var S = String(this);
+       /* eslint-disable es/no-array-prototype-lastindexof -- safe */
+       var toIndexedObject$4 = toIndexedObject$b;
+       var toInteger$4 = toInteger$b;
+       var toLength$f = toLength$q;
+       var arrayMethodIsStrict$5 = arrayMethodIsStrict$8;

 
 

-             var functionalReplace = typeof replaceValue === 'function';
-             if (!functionalReplace) replaceValue = String(replaceValue);
+       var min$6 = Math.min;
+       var $lastIndexOf$1 = [].lastIndexOf;
+       var NEGATIVE_ZERO = !!$lastIndexOf$1 && 1 / [1].lastIndexOf(1, -0) < 0;
+       var STRICT_METHOD$5 = arrayMethodIsStrict$5('lastIndexOf');
+       var FORCED$e = NEGATIVE_ZERO || !STRICT_METHOD$5;

 
 

-             var global = rx.global;
-             if (global) {
-               var fullUnicode = rx.unicode;
-               rx.lastIndex = 0;
-             }
-             var results = [];
-             while (true) {
-               var result = regexpExecAbstract(rx, S);
-               if (result === null) break;
-
-               results.push(result);
-               if (!global) break;
-
-               var matchStr = String(result[0]);
-               if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
-             }
+       // `Array.prototype.lastIndexOf` method implementation
+       // https://tc39.es/ecma262/#sec-array.prototype.lastindexof
+       var arrayLastIndexOf = FORCED$e ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
+         // convert -0 to +0
+         if (NEGATIVE_ZERO) return $lastIndexOf$1.apply(this, arguments) || 0;
+         var O = toIndexedObject$4(this);
+         var length = toLength$f(O.length);
+         var index = length - 1;
+         if (arguments.length > 1) index = min$6(index, toInteger$4(arguments[1]));
+         if (index < 0) index = length + index;
+         for (;index >= 0; index--) if (index in O && O[index] === searchElement) return index || 0;
+         return -1;
+       } : $lastIndexOf$1;

 
 

-             var accumulatedResult = '';
-             var nextSourcePosition = 0;
-             for (var i = 0; i < results.length; i++) {
-               result = results[i];
+       var ArrayBufferViewCore$a = arrayBufferViewCore;
+       var $lastIndexOf = arrayLastIndexOf;

 
 

-               var matched = String(result[0]);
-               var position = max$2(min$2(toInteger(result.index), S.length), 0);
-               var captures = [];
-               // NOTE: This is equivalent to
-               //   captures = result.slice(1).map(maybeToString)
-               // but for some reason `nativeSlice.call(result, 1, result.length)` (called in
-               // the slice polyfill when slicing native arrays) "doesn't work" in safari 9 and
-               // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.
-               for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));
-               var namedCaptures = result.groups;
-               if (functionalReplace) {
-                 var replacerArgs = [matched].concat(captures, position, S);
-                 if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);
-                 var replacement = String(replaceValue.apply(undefined, replacerArgs));
-               } else {
-                 replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
-               }
-               if (position >= nextSourcePosition) {
-                 accumulatedResult += S.slice(nextSourcePosition, position) + replacement;
-                 nextSourcePosition = position + matched.length;
-               }
-             }
-             return accumulatedResult + S.slice(nextSourcePosition);
-           }
-         ];
+       var aTypedArray$a = ArrayBufferViewCore$a.aTypedArray;
+       var exportTypedArrayMethod$b = ArrayBufferViewCore$a.exportTypedArrayMethod;

 
 

-         // https://tc39.github.io/ecma262/#sec-getsubstitution
-         function getSubstitution(matched, str, position, captures, namedCaptures, replacement) {
-           var tailPos = position + matched.length;
-           var m = captures.length;
-           var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
-           if (namedCaptures !== undefined) {
-             namedCaptures = toObject(namedCaptures);
-             symbols = SUBSTITUTION_SYMBOLS;
-           }
-           return nativeReplace.call(replacement, symbols, function (match, ch) {
-             var capture;
-             switch (ch.charAt(0)) {
-               case '$': return '$';
-               case '&': return matched;
-               case '`': return str.slice(0, position);
-               case "'": return str.slice(tailPos);
-               case '<':
-                 capture = namedCaptures[ch.slice(1, -1)];
-                 break;
-               default: // \d\d?
-                 var n = +ch;
-                 if (n === 0) return match;
-                 if (n > m) {
-                   var f = floor$2(n / 10);
-                   if (f === 0) return match;
-                   if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);
-                   return match;
-                 }
-                 capture = captures[n - 1];
-             }
-             return capture === undefined ? '' : capture;
-           });
-         }
+       // `%TypedArray%.prototype.lastIndexOf` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.lastindexof
+       // eslint-disable-next-line no-unused-vars -- required for `.length`
+       exportTypedArrayMethod$b('lastIndexOf', function lastIndexOf(searchElement /* , fromIndex */) {
+         return $lastIndexOf.apply(aTypedArray$a(this), arguments);

        });
 
        });
 

-       var MATCH = wellKnownSymbol('match');
+       var ArrayBufferViewCore$9 = arrayBufferViewCore;
+       var $map = arrayIteration.map;
+       var speciesConstructor$4 = speciesConstructor$8;

 
 

-       // `IsRegExp` abstract operation
-       // https://tc39.github.io/ecma262/#sec-isregexp
-       var isRegexp = function (it) {
-         var isRegExp;
-         return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classofRaw(it) == 'RegExp');
-       };
+       var aTypedArray$9 = ArrayBufferViewCore$9.aTypedArray;
+       var aTypedArrayConstructor$1 = ArrayBufferViewCore$9.aTypedArrayConstructor;
+       var exportTypedArrayMethod$a = ArrayBufferViewCore$9.exportTypedArrayMethod;

 
 

-       var arrayPush = [].push;
-       var min$3 = Math.min;
-       var MAX_UINT32 = 0xFFFFFFFF;
+       // `%TypedArray%.prototype.map` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.map
+       exportTypedArrayMethod$a('map', function map(mapfn /* , thisArg */) {
+         return $map(aTypedArray$9(this), mapfn, arguments.length > 1 ? arguments[1] : undefined, function (O, length) {
+           return new (aTypedArrayConstructor$1(speciesConstructor$4(O, O.constructor)))(length);
+         });
+       });

 
 

-       // babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError
-       var SUPPORTS_Y = !fails(function () { return !RegExp(MAX_UINT32, 'y'); });
+       var aFunction$4 = aFunction$9;
+       var toObject$a = toObject$i;
+       var IndexedObject$2 = indexedObject;
+       var toLength$e = toLength$q;

 
 

-       // @@split logic
-       fixRegexpWellKnownSymbolLogic('split', 2, function (SPLIT, nativeSplit, maybeCallNative) {
-         var internalSplit;
-         if (
-           'abbc'.split(/(b)*/)[1] == 'c' ||
-           'test'.split(/(?:)/, -1).length != 4 ||
-           'ab'.split(/(?:ab)*/).length != 2 ||
-           '.'.split(/(.?)(.?)/).length != 4 ||
-           '.'.split(/()()/).length > 1 ||
-           ''.split(/.?/).length
-         ) {
-           // based on es5-shim implementation, need to rework it
-           internalSplit = function (separator, limit) {
-             var string = String(requireObjectCoercible(this));
-             var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
-             if (lim === 0) return [];
-             if (separator === undefined) return [string];
-             // If `separator` is not a regex, use native split
-             if (!isRegexp(separator)) {
-               return nativeSplit.call(string, separator, lim);
-             }
-             var output = [];
-             var flags = (separator.ignoreCase ? 'i' : '') +
-                         (separator.multiline ? 'm' : '') +
-                         (separator.unicode ? 'u' : '') +
-                         (separator.sticky ? 'y' : '');
-             var lastLastIndex = 0;
-             // Make `global` and avoid `lastIndex` issues by working with a copy
-             var separatorCopy = new RegExp(separator.source, flags + 'g');
-             var match, lastIndex, lastLength;
-             while (match = regexpExec.call(separatorCopy, string)) {
-               lastIndex = separatorCopy.lastIndex;
-               if (lastIndex > lastLastIndex) {
-                 output.push(string.slice(lastLastIndex, match.index));
-                 if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1));
-                 lastLength = match[0].length;
-                 lastLastIndex = lastIndex;
-                 if (output.length >= lim) break;
-               }
-               if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
+       // `Array.prototype.{ reduce, reduceRight }` methods implementation
+       var createMethod$3 = function (IS_RIGHT) {
+         return function (that, callbackfn, argumentsLength, memo) {
+           aFunction$4(callbackfn);
+           var O = toObject$a(that);
+           var self = IndexedObject$2(O);
+           var length = toLength$e(O.length);
+           var index = IS_RIGHT ? length - 1 : 0;
+           var i = IS_RIGHT ? -1 : 1;
+           if (argumentsLength < 2) while (true) {
+             if (index in self) {
+               memo = self[index];
+               index += i;
+               break;

              }
              }

-             if (lastLastIndex === string.length) {
-               if (lastLength || !separatorCopy.test('')) output.push('');
-             } else output.push(string.slice(lastLastIndex));
-             return output.length > lim ? output.slice(0, lim) : output;
-           };
-         // Chakra, V8
-         } else if ('0'.split(undefined, 0).length) {
-           internalSplit = function (separator, limit) {
-             return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit);
-           };
-         } else internalSplit = nativeSplit;
-
-         return [
-           // `String.prototype.split` method
-           // https://tc39.github.io/ecma262/#sec-string.prototype.split
-           function split(separator, limit) {
-             var O = requireObjectCoercible(this);
-             var splitter = separator == undefined ? undefined : separator[SPLIT];
-             return splitter !== undefined
-               ? splitter.call(separator, O, limit)
-               : internalSplit.call(String(O), separator, limit);
-           },
-           // `RegExp.prototype[@@split]` method
-           // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split
-           //
-           // NOTE: This cannot be properly polyfilled in engines that don't support
-           // the 'y' flag.
-           function (regexp, limit) {
-             var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== nativeSplit);
-             if (res.done) return res.value;
-
-             var rx = anObject(regexp);
-             var S = String(this);
-             var C = speciesConstructor(rx, RegExp);
-
-             var unicodeMatching = rx.unicode;
-             var flags = (rx.ignoreCase ? 'i' : '') +
-                         (rx.multiline ? 'm' : '') +
-                         (rx.unicode ? 'u' : '') +
-                         (SUPPORTS_Y ? 'y' : 'g');
-
-             // ^(? + rx + ) is needed, in combination with some S slicing, to
-             // simulate the 'y' flag.
-             var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags);
-             var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
-             if (lim === 0) return [];
-             if (S.length === 0) return regexpExecAbstract(splitter, S) === null ? [S] : [];
-             var p = 0;
-             var q = 0;
-             var A = [];
-             while (q < S.length) {
-               splitter.lastIndex = SUPPORTS_Y ? q : 0;
-               var z = regexpExecAbstract(splitter, SUPPORTS_Y ? S : S.slice(q));
-               var e;
-               if (
-                 z === null ||
-                 (e = min$3(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p
-               ) {
-                 q = advanceStringIndex(S, q, unicodeMatching);
-               } else {
-                 A.push(S.slice(p, q));
-                 if (A.length === lim) return A;
-                 for (var i = 1; i <= z.length - 1; i++) {
-                   A.push(z[i]);
-                   if (A.length === lim) return A;
-                 }
-                 q = p = e;
-               }
+             index += i;
+             if (IS_RIGHT ? index < 0 : length <= index) {
+               throw TypeError('Reduce of empty array with no initial value');

              }
              }

-             A.push(S.slice(p));
-             return A;

            }
            }

-         ];
-       }, !SUPPORTS_Y);
-
-       // a string of all valid unicode whitespaces
-       // eslint-disable-next-line max-len
-       var whitespaces = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
-
-       var whitespace = '[' + whitespaces + ']';
-       var ltrim = RegExp('^' + whitespace + whitespace + '*');
-       var rtrim = RegExp(whitespace + whitespace + '*$');
-
-       // `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation
-       var createMethod$3 = function (TYPE) {
-         return function ($this) {
-           var string = String(requireObjectCoercible($this));
-           if (TYPE & 1) string = string.replace(ltrim, '');
-           if (TYPE & 2) string = string.replace(rtrim, '');
-           return string;
+           for (;IS_RIGHT ? index >= 0 : length > index; index += i) if (index in self) {
+             memo = callbackfn(memo, self[index], index, O);
+           }
+           return memo;

          };
        };
 
          };
        };
 

-       var stringTrim = {
-         // `String.prototype.{ trimLeft, trimStart }` methods
-         // https://tc39.github.io/ecma262/#sec-string.prototype.trimstart
-         start: createMethod$3(1),
-         // `String.prototype.{ trimRight, trimEnd }` methods
-         // https://tc39.github.io/ecma262/#sec-string.prototype.trimend
-         end: createMethod$3(2),
-         // `String.prototype.trim` method
-         // https://tc39.github.io/ecma262/#sec-string.prototype.trim
-         trim: createMethod$3(3)
-       };
-
-       var non = '\u200B\u0085\u180E';
-
-       // check that a method works with the correct list
-       // of whitespaces and has a correct name
-       var stringTrimForced = function (METHOD_NAME) {
-         return fails(function () {
-           return !!whitespaces[METHOD_NAME]() || non[METHOD_NAME]() != non || whitespaces[METHOD_NAME].name !== METHOD_NAME;
-         });
+       var arrayReduce = {
+         // `Array.prototype.reduce` method
+         // https://tc39.es/ecma262/#sec-array.prototype.reduce
+         left: createMethod$3(false),
+         // `Array.prototype.reduceRight` method
+         // https://tc39.es/ecma262/#sec-array.prototype.reduceright
+         right: createMethod$3(true)

        };
 
        };
 

-       var $trim = stringTrim.trim;
+       var ArrayBufferViewCore$8 = arrayBufferViewCore;
+       var $reduce$1 = arrayReduce.left;

 
 

+       var aTypedArray$8 = ArrayBufferViewCore$8.aTypedArray;
+       var exportTypedArrayMethod$9 = ArrayBufferViewCore$8.exportTypedArrayMethod;

 
 

-       // `String.prototype.trim` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.trim
-       _export({ target: 'String', proto: true, forced: stringTrimForced('trim') }, {
-         trim: function trim() {
-           return $trim(this);
-         }
+       // `%TypedArray%.prototype.reduce` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.reduce
+       exportTypedArrayMethod$9('reduce', function reduce(callbackfn /* , initialValue */) {
+         return $reduce$1(aTypedArray$8(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);

        });
 
        });
 

-       /* eslint-disable no-new */
-
-
-
-       var NATIVE_ARRAY_BUFFER_VIEWS$2 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
+       var ArrayBufferViewCore$7 = arrayBufferViewCore;
+       var $reduceRight = arrayReduce.right;

 
 

-       var ArrayBuffer$3 = global_1.ArrayBuffer;
-       var Int8Array$2 = global_1.Int8Array;
+       var aTypedArray$7 = ArrayBufferViewCore$7.aTypedArray;
+       var exportTypedArrayMethod$8 = ArrayBufferViewCore$7.exportTypedArrayMethod;

 
 

-       var typedArrayConstructorsRequireWrappers = !NATIVE_ARRAY_BUFFER_VIEWS$2 || !fails(function () {
-         Int8Array$2(1);
-       }) || !fails(function () {
-         new Int8Array$2(-1);
-       }) || !checkCorrectnessOfIteration(function (iterable) {
-         new Int8Array$2();
-         new Int8Array$2(null);
-         new Int8Array$2(1.5);
-         new Int8Array$2(iterable);
-       }, true) || fails(function () {
-         // Safari (11+) bug - a reason why even Safari 13 should load a typed array polyfill
-         return new Int8Array$2(new ArrayBuffer$3(2), 1, undefined).length !== 1;
+       // `%TypedArray%.prototype.reduceRicht` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.reduceright
+       exportTypedArrayMethod$8('reduceRight', function reduceRight(callbackfn /* , initialValue */) {
+         return $reduceRight(aTypedArray$7(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);

        });
 
        });
 

-       var toPositiveInteger = function (it) {
-         var result = toInteger(it);
-         if (result < 0) throw RangeError("The argument can't be less than 0");
-         return result;
-       };
-
-       var toOffset = function (it, BYTES) {
-         var offset = toPositiveInteger(it);
-         if (offset % BYTES) throw RangeError('Wrong offset');
-         return offset;
-       };
-
-       var aTypedArrayConstructor$1 = arrayBufferViewCore.aTypedArrayConstructor;
-
-       var typedArrayFrom = function from(source /* , mapfn, thisArg */) {
-         var O = toObject(source);
-         var argumentsLength = arguments.length;
-         var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
-         var mapping = mapfn !== undefined;
-         var iteratorMethod = getIteratorMethod(O);
-         var i, length, result, step, iterator, next;
-         if (iteratorMethod != undefined && !isArrayIteratorMethod(iteratorMethod)) {
-           iterator = iteratorMethod.call(O);
-           next = iterator.next;
-           O = [];
-           while (!(step = next.call(iterator)).done) {
-             O.push(step.value);
-           }
-         }
-         if (mapping && argumentsLength > 2) {
-           mapfn = functionBindContext(mapfn, arguments[2], 2);
-         }
-         length = toLength(O.length);
-         result = new (aTypedArrayConstructor$1(this))(length);
-         for (i = 0; length > i; i++) {
-           result[i] = mapping ? mapfn(O[i], i) : O[i];
-         }
-         return result;
-       };
-
-       // makes subclassing work correct for wrapped built-ins
-       var inheritIfRequired = function ($this, dummy, Wrapper) {
-         var NewTarget, NewTargetPrototype;
-         if (
-           // it can work only with native `setPrototypeOf`
-           objectSetPrototypeOf &&
-           // we haven't completely correct pre-ES6 way for getting `new.target`, so use this
-           typeof (NewTarget = dummy.constructor) == 'function' &&
-           NewTarget !== Wrapper &&
-           isObject(NewTargetPrototype = NewTarget.prototype) &&
-           NewTargetPrototype !== Wrapper.prototype
-         ) objectSetPrototypeOf($this, NewTargetPrototype);
-         return $this;
-       };
-
-       var typedArrayConstructor = createCommonjsModule(function (module) {
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+       var ArrayBufferViewCore$6 = arrayBufferViewCore;

 
 

+       var aTypedArray$6 = ArrayBufferViewCore$6.aTypedArray;
+       var exportTypedArrayMethod$7 = ArrayBufferViewCore$6.exportTypedArrayMethod;
+       var floor$5 = Math.floor;

 
 

-       var getOwnPropertyNames = objectGetOwnPropertyNames.f;
+       // `%TypedArray%.prototype.reverse` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.reverse
+       exportTypedArrayMethod$7('reverse', function reverse() {
+         var that = this;
+         var length = aTypedArray$6(that).length;
+         var middle = floor$5(length / 2);
+         var index = 0;
+         var value;
+         while (index < middle) {
+           value = that[index];
+           that[index++] = that[--length];
+           that[length] = value;
+         } return that;
+       });

 
 

-       var forEach = arrayIteration.forEach;
+       var ArrayBufferViewCore$5 = arrayBufferViewCore;
+       var toLength$d = toLength$q;
+       var toOffset = toOffset$2;
+       var toObject$9 = toObject$i;
+       var fails$x = fails$N;

 
 

+       var aTypedArray$5 = ArrayBufferViewCore$5.aTypedArray;
+       var exportTypedArrayMethod$6 = ArrayBufferViewCore$5.exportTypedArrayMethod;

 
 

+       var FORCED$d = fails$x(function () {
+         // eslint-disable-next-line es/no-typed-arrays -- required for testing
+         new Int8Array(1).set({});
+       });

 
 

+       // `%TypedArray%.prototype.set` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.set
+       exportTypedArrayMethod$6('set', function set(arrayLike /* , offset */) {
+         aTypedArray$5(this);
+         var offset = toOffset(arguments.length > 1 ? arguments[1] : undefined, 1);
+         var length = this.length;
+         var src = toObject$9(arrayLike);
+         var len = toLength$d(src.length);
+         var index = 0;
+         if (len + offset > length) throw RangeError('Wrong length');
+         while (index < len) this[offset + index] = src[index++];
+       }, FORCED$d);

 
 

+       var ArrayBufferViewCore$4 = arrayBufferViewCore;
+       var speciesConstructor$3 = speciesConstructor$8;
+       var fails$w = fails$N;

 
 

+       var aTypedArray$4 = ArrayBufferViewCore$4.aTypedArray;
+       var aTypedArrayConstructor = ArrayBufferViewCore$4.aTypedArrayConstructor;
+       var exportTypedArrayMethod$5 = ArrayBufferViewCore$4.exportTypedArrayMethod;
+       var $slice$1 = [].slice;

 
 

-       var getInternalState = internalState.get;
-       var setInternalState = internalState.set;
-       var nativeDefineProperty = objectDefineProperty.f;
-       var nativeGetOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
-       var round = Math.round;
-       var RangeError = global_1.RangeError;
-       var ArrayBuffer = arrayBuffer.ArrayBuffer;
-       var DataView = arrayBuffer.DataView;
-       var NATIVE_ARRAY_BUFFER_VIEWS = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
-       var TYPED_ARRAY_TAG = arrayBufferViewCore.TYPED_ARRAY_TAG;
-       var TypedArray = arrayBufferViewCore.TypedArray;
-       var TypedArrayPrototype = arrayBufferViewCore.TypedArrayPrototype;
-       var aTypedArrayConstructor = arrayBufferViewCore.aTypedArrayConstructor;
-       var isTypedArray = arrayBufferViewCore.isTypedArray;
-       var BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';
-       var WRONG_LENGTH = 'Wrong length';
+       var FORCED$c = fails$w(function () {
+         // eslint-disable-next-line es/no-typed-arrays -- required for testing
+         new Int8Array(1).slice();
+       });

 
 

-       var fromList = function (C, list) {
+       // `%TypedArray%.prototype.slice` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.slice
+       exportTypedArrayMethod$5('slice', function slice(start, end) {
+         var list = $slice$1.call(aTypedArray$4(this), start, end);
+         var C = speciesConstructor$3(this, this.constructor);

          var index = 0;
          var length = list.length;
          var result = new (aTypedArrayConstructor(C))(length);
          while (length > index) result[index] = list[index++];
          return result;
          var index = 0;
          var length = list.length;
          var result = new (aTypedArrayConstructor(C))(length);
          while (length > index) result[index] = list[index++];
          return result;

-       };
+       }, FORCED$c);

 
 

-       var addGetter = function (it, key) {
-         nativeDefineProperty(it, key, { get: function () {
-           return getInternalState(this)[key];
-         } });
-       };
+       var ArrayBufferViewCore$3 = arrayBufferViewCore;
+       var $some$1 = arrayIteration.some;

 
 

-       var isArrayBuffer = function (it) {
-         var klass;
-         return it instanceof ArrayBuffer || (klass = classof(it)) == 'ArrayBuffer' || klass == 'SharedArrayBuffer';
-       };
+       var aTypedArray$3 = ArrayBufferViewCore$3.aTypedArray;
+       var exportTypedArrayMethod$4 = ArrayBufferViewCore$3.exportTypedArrayMethod;

 
 

-       var isTypedArrayIndex = function (target, key) {
-         return isTypedArray(target)
-           && typeof key != 'symbol'
-           && key in target
-           && String(+key) == String(key);
-       };
+       // `%TypedArray%.prototype.some` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.some
+       exportTypedArrayMethod$4('some', function some(callbackfn /* , thisArg */) {
+         return $some$1(aTypedArray$3(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+       });

 
 

-       var wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {
-         return isTypedArrayIndex(target, key = toPrimitive(key, true))
-           ? createPropertyDescriptor(2, target[key])
-           : nativeGetOwnPropertyDescriptor(target, key);
-       };
+       // TODO: use something more complex like timsort?
+       var floor$4 = Math.floor;

 
 

-       var wrappedDefineProperty = function defineProperty(target, key, descriptor) {
-         if (isTypedArrayIndex(target, key = toPrimitive(key, true))
-           && isObject(descriptor)
-           && has(descriptor, 'value')
-           && !has(descriptor, 'get')
-           && !has(descriptor, 'set')
-           // TODO: add validation descriptor w/o calling accessors
-           && !descriptor.configurable
-           && (!has(descriptor, 'writable') || descriptor.writable)
-           && (!has(descriptor, 'enumerable') || descriptor.enumerable)
-         ) {
-           target[key] = descriptor.value;
-           return target;
-         } return nativeDefineProperty(target, key, descriptor);
+       var mergeSort = function (array, comparefn) {
+         var length = array.length;
+         var middle = floor$4(length / 2);
+         return length < 8 ? insertionSort(array, comparefn) : merge$5(
+           mergeSort(array.slice(0, middle), comparefn),
+           mergeSort(array.slice(middle), comparefn),
+           comparefn
+         );

        };
 
        };
 

-       if (descriptors) {
-         if (!NATIVE_ARRAY_BUFFER_VIEWS) {
-           objectGetOwnPropertyDescriptor.f = wrappedGetOwnPropertyDescriptor;
-           objectDefineProperty.f = wrappedDefineProperty;
-           addGetter(TypedArrayPrototype, 'buffer');
-           addGetter(TypedArrayPrototype, 'byteOffset');
-           addGetter(TypedArrayPrototype, 'byteLength');
-           addGetter(TypedArrayPrototype, 'length');
-         }
+       var insertionSort = function (array, comparefn) {
+         var length = array.length;
+         var i = 1;
+         var element, j;

 
 

-         _export({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
-           getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,
-           defineProperty: wrappedDefineProperty
-         });
+         while (i < length) {
+           j = i;
+           element = array[i];
+           while (j && comparefn(array[j - 1], element) > 0) {
+             array[j] = array[--j];
+           }
+           if (j !== i++) array[j] = element;
+         } return array;
+       };

 
 

-         module.exports = function (TYPE, wrapper, CLAMPED) {
-           var BYTES = TYPE.match(/\d+$/)[0] / 8;
-           var CONSTRUCTOR_NAME = TYPE + (CLAMPED ? 'Clamped' : '') + 'Array';
-           var GETTER = 'get' + TYPE;
-           var SETTER = 'set' + TYPE;
-           var NativeTypedArrayConstructor = global_1[CONSTRUCTOR_NAME];
-           var TypedArrayConstructor = NativeTypedArrayConstructor;
-           var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;
-           var exported = {};
+       var merge$5 = function (left, right, comparefn) {
+         var llength = left.length;
+         var rlength = right.length;
+         var lindex = 0;
+         var rindex = 0;
+         var result = [];

 
 

-           var getter = function (that, index) {
-             var data = getInternalState(that);
-             return data.view[GETTER](index * BYTES + data.byteOffset, true);
-           };
+         while (lindex < llength || rindex < rlength) {
+           if (lindex < llength && rindex < rlength) {
+             result.push(comparefn(left[lindex], right[rindex]) <= 0 ? left[lindex++] : right[rindex++]);
+           } else {
+             result.push(lindex < llength ? left[lindex++] : right[rindex++]);
+           }
+         } return result;
+       };

 
 

-           var setter = function (that, index, value) {
-             var data = getInternalState(that);
-             if (CLAMPED) value = (value = round(value)) < 0 ? 0 : value > 0xFF ? 0xFF : value & 0xFF;
-             data.view[SETTER](index * BYTES + data.byteOffset, value, true);
-           };
+       var arraySort = mergeSort;

 
 

-           var addElement = function (that, index) {
-             nativeDefineProperty(that, index, {
-               get: function () {
-                 return getter(this, index);
-               },
-               set: function (value) {
-                 return setter(this, index, value);
-               },
-               enumerable: true
-             });
-           };
+       var userAgent$2 = engineUserAgent;

 
 

-           if (!NATIVE_ARRAY_BUFFER_VIEWS) {
-             TypedArrayConstructor = wrapper(function (that, data, offset, $length) {
-               anInstance(that, TypedArrayConstructor, CONSTRUCTOR_NAME);
-               var index = 0;
-               var byteOffset = 0;
-               var buffer, byteLength, length;
-               if (!isObject(data)) {
-                 length = toIndex(data);
-                 byteLength = length * BYTES;
-                 buffer = new ArrayBuffer(byteLength);
-               } else if (isArrayBuffer(data)) {
-                 buffer = data;
-                 byteOffset = toOffset(offset, BYTES);
-                 var $len = data.byteLength;
-                 if ($length === undefined) {
-                   if ($len % BYTES) throw RangeError(WRONG_LENGTH);
-                   byteLength = $len - byteOffset;
-                   if (byteLength < 0) throw RangeError(WRONG_LENGTH);
-                 } else {
-                   byteLength = toLength($length) * BYTES;
-                   if (byteLength + byteOffset > $len) throw RangeError(WRONG_LENGTH);
-                 }
-                 length = byteLength / BYTES;
-               } else if (isTypedArray(data)) {
-                 return fromList(TypedArrayConstructor, data);
-               } else {
-                 return typedArrayFrom.call(TypedArrayConstructor, data);
-               }
-               setInternalState(that, {
-                 buffer: buffer,
-                 byteOffset: byteOffset,
-                 byteLength: byteLength,
-                 length: length,
-                 view: new DataView(buffer)
-               });
-               while (index < length) addElement(that, index++);
-             });
+       var firefox = userAgent$2.match(/firefox\/(\d+)/i);

 
 

-             if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
-             TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = objectCreate(TypedArrayPrototype);
-           } else if (typedArrayConstructorsRequireWrappers) {
-             TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {
-               anInstance(dummy, TypedArrayConstructor, CONSTRUCTOR_NAME);
-               return inheritIfRequired(function () {
-                 if (!isObject(data)) return new NativeTypedArrayConstructor(toIndex(data));
-                 if (isArrayBuffer(data)) return $length !== undefined
-                   ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES), $length)
-                   : typedArrayOffset !== undefined
-                     ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES))
-                     : new NativeTypedArrayConstructor(data);
-                 if (isTypedArray(data)) return fromList(TypedArrayConstructor, data);
-                 return typedArrayFrom.call(TypedArrayConstructor, data);
-               }(), dummy, TypedArrayConstructor);
-             });
+       var engineFfVersion = !!firefox && +firefox[1];

 
 

-             if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
-             forEach(getOwnPropertyNames(NativeTypedArrayConstructor), function (key) {
-               if (!(key in TypedArrayConstructor)) {
-                 createNonEnumerableProperty(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
-               }
-             });
-             TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;
-           }
+       var UA = engineUserAgent;

 
 

-           if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);
-           }
+       var engineIsIeOrEdge = /MSIE|Trident/.test(UA);

 
 

-           if (TYPED_ARRAY_TAG) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);
-           }
+       var userAgent$1 = engineUserAgent;

 
 

-           exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;
+       var webkit = userAgent$1.match(/AppleWebKit\/(\d+)\./);

 
 

-           _export({
-             global: true, forced: TypedArrayConstructor != NativeTypedArrayConstructor, sham: !NATIVE_ARRAY_BUFFER_VIEWS
-           }, exported);
+       var engineWebkitVersion = !!webkit && +webkit[1];

 
 

-           if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {
-             createNonEnumerableProperty(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);
-           }
+       var ArrayBufferViewCore$2 = arrayBufferViewCore;
+       var global$d = global$F;
+       var fails$v = fails$N;
+       var aFunction$3 = aFunction$9;
+       var toLength$c = toLength$q;
+       var internalSort$1 = arraySort;
+       var FF$1 = engineFfVersion;
+       var IE_OR_EDGE$1 = engineIsIeOrEdge;
+       var V8$1 = engineV8Version;
+       var WEBKIT$1 = engineWebkitVersion;

 
 

-           if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);
-           }
+       var aTypedArray$2 = ArrayBufferViewCore$2.aTypedArray;
+       var exportTypedArrayMethod$3 = ArrayBufferViewCore$2.exportTypedArrayMethod;
+       var Uint16Array = global$d.Uint16Array;
+       var nativeSort$1 = Uint16Array && Uint16Array.prototype.sort;

 
 

-           setSpecies(CONSTRUCTOR_NAME);
-         };
-       } else module.exports = function () { /* empty */ };
+       // WebKit
+       var ACCEPT_INCORRECT_ARGUMENTS = !!nativeSort$1 && !fails$v(function () {
+         var array = new Uint16Array(2);
+         array.sort(null);
+         array.sort({});

        });
 
        });
 

-       // `Uint8Array` constructor
-       // https://tc39.github.io/ecma262/#sec-typedarray-objects
-       typedArrayConstructor('Uint8', function (init) {
-         return function Uint8Array(data, byteOffset, length) {
-           return init(this, data, byteOffset, length);
-         };
-       });
+       var STABLE_SORT$1 = !!nativeSort$1 && !fails$v(function () {
+         // feature detection can be too slow, so check engines versions
+         if (V8$1) return V8$1 < 74;
+         if (FF$1) return FF$1 < 67;
+         if (IE_OR_EDGE$1) return true;
+         if (WEBKIT$1) return WEBKIT$1 < 602;

 
 

-       var min$4 = Math.min;
+         var array = new Uint16Array(516);
+         var expected = Array(516);
+         var index, mod;

 
 

-       // `Array.prototype.copyWithin` method implementation
-       // https://tc39.github.io/ecma262/#sec-array.prototype.copywithin
-       var arrayCopyWithin = [].copyWithin || function copyWithin(target /* = 0 */, start /* = 0, end = @length */) {
-         var O = toObject(this);
-         var len = toLength(O.length);
-         var to = toAbsoluteIndex(target, len);
-         var from = toAbsoluteIndex(start, len);
-         var end = arguments.length > 2 ? arguments[2] : undefined;
-         var count = min$4((end === undefined ? len : toAbsoluteIndex(end, len)) - from, len - to);
-         var inc = 1;
-         if (from < to && to < from + count) {
-           inc = -1;
-           from += count - 1;
-           to += count - 1;
+         for (index = 0; index < 516; index++) {
+           mod = index % 4;
+           array[index] = 515 - index;
+           expected[index] = index - 2 * mod + 3;

          }
          }

-         while (count-- > 0) {
-           if (from in O) O[to] = O[from];
-           else delete O[to];
-           to += inc;
-           from += inc;
-         } return O;
-       };

 
 

-       var aTypedArray$1 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$1 = arrayBufferViewCore.exportTypedArrayMethod;
+         array.sort(function (a, b) {
+           return (a / 4 | 0) - (b / 4 | 0);
+         });

 
 

-       // `%TypedArray%.prototype.copyWithin` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.copywithin
-       exportTypedArrayMethod$1('copyWithin', function copyWithin(target, start /* , end */) {
-         return arrayCopyWithin.call(aTypedArray$1(this), target, start, arguments.length > 2 ? arguments[2] : undefined);
+         for (index = 0; index < 516; index++) {
+           if (array[index] !== expected[index]) return true;
+         }

        });
 
        });
 

-       var $every = arrayIteration.every;
+       var getSortCompare$1 = function (comparefn) {
+         return function (x, y) {
+           if (comparefn !== undefined) return +comparefn(x, y) || 0;
+           // eslint-disable-next-line no-self-compare -- NaN check
+           if (y !== y) return -1;
+           // eslint-disable-next-line no-self-compare -- NaN check
+           if (x !== x) return 1;
+           if (x === 0 && y === 0) return 1 / x > 0 && 1 / y < 0 ? 1 : -1;
+           return x > y;
+         };
+       };

 
 

-       var aTypedArray$2 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$2 = arrayBufferViewCore.exportTypedArrayMethod;
+       // `%TypedArray%.prototype.sort` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.sort
+       exportTypedArrayMethod$3('sort', function sort(comparefn) {
+         var array = this;
+         if (comparefn !== undefined) aFunction$3(comparefn);
+         if (STABLE_SORT$1) return nativeSort$1.call(array, comparefn);

 
 

-       // `%TypedArray%.prototype.every` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.every
-       exportTypedArrayMethod$2('every', function every(callbackfn /* , thisArg */) {
-         return $every(aTypedArray$2(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-       });
+         aTypedArray$2(array);
+         var arrayLength = toLength$c(array.length);
+         var items = Array(arrayLength);
+         var index;

 
 

-       var aTypedArray$3 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$3 = arrayBufferViewCore.exportTypedArrayMethod;
+         for (index = 0; index < arrayLength; index++) {
+           items[index] = array[index];
+         }

 
 

-       // `%TypedArray%.prototype.fill` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.fill
-       // eslint-disable-next-line no-unused-vars
-       exportTypedArrayMethod$3('fill', function fill(value /* , start, end */) {
-         return arrayFill.apply(aTypedArray$3(this), arguments);
-       });
+         items = internalSort$1(array, getSortCompare$1(comparefn));

 
 

-       var $filter = arrayIteration.filter;
+         for (index = 0; index < arrayLength; index++) {
+           array[index] = items[index];
+         }

 
 

+         return array;
+       }, !STABLE_SORT$1 || ACCEPT_INCORRECT_ARGUMENTS);

 
 

-       var aTypedArray$4 = arrayBufferViewCore.aTypedArray;
-       var aTypedArrayConstructor$2 = arrayBufferViewCore.aTypedArrayConstructor;
-       var exportTypedArrayMethod$4 = arrayBufferViewCore.exportTypedArrayMethod;
+       var ArrayBufferViewCore$1 = arrayBufferViewCore;
+       var toLength$b = toLength$q;
+       var toAbsoluteIndex$3 = toAbsoluteIndex$8;
+       var speciesConstructor$2 = speciesConstructor$8;

 
 

-       // `%TypedArray%.prototype.filter` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.filter
-       exportTypedArrayMethod$4('filter', function filter(callbackfn /* , thisArg */) {
-         var list = $filter(aTypedArray$4(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-         var C = speciesConstructor(this, this.constructor);
-         var index = 0;
-         var length = list.length;
-         var result = new (aTypedArrayConstructor$2(C))(length);
-         while (length > index) result[index] = list[index++];
-         return result;
+       var aTypedArray$1 = ArrayBufferViewCore$1.aTypedArray;
+       var exportTypedArrayMethod$2 = ArrayBufferViewCore$1.exportTypedArrayMethod;
+
+       // `%TypedArray%.prototype.subarray` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.subarray
+       exportTypedArrayMethod$2('subarray', function subarray(begin, end) {
+         var O = aTypedArray$1(this);
+         var length = O.length;
+         var beginIndex = toAbsoluteIndex$3(begin, length);
+         return new (speciesConstructor$2(O, O.constructor))(
+           O.buffer,
+           O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,
+           toLength$b((end === undefined ? length : toAbsoluteIndex$3(end, length)) - beginIndex)
+         );

        });
 
        });
 

-       var $find = arrayIteration.find;
+       var global$c = global$F;
+       var ArrayBufferViewCore = arrayBufferViewCore;
+       var fails$u = fails$N;

 
 

-       var aTypedArray$5 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$5 = arrayBufferViewCore.exportTypedArrayMethod;
+       var Int8Array$1 = global$c.Int8Array;
+       var aTypedArray = ArrayBufferViewCore.aTypedArray;
+       var exportTypedArrayMethod$1 = ArrayBufferViewCore.exportTypedArrayMethod;
+       var $toLocaleString = [].toLocaleString;
+       var $slice = [].slice;

 
 

-       // `%TypedArray%.prototype.find` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.find
-       exportTypedArrayMethod$5('find', function find(predicate /* , thisArg */) {
-         return $find(aTypedArray$5(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
+       // iOS Safari 6.x fails here
+       var TO_LOCALE_STRING_BUG = !!Int8Array$1 && fails$u(function () {
+         $toLocaleString.call(new Int8Array$1(1));

        });
 
        });
 

-       var $findIndex = arrayIteration.findIndex;
-
-       var aTypedArray$6 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$6 = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.findIndex` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.findindex
-       exportTypedArrayMethod$6('findIndex', function findIndex(predicate /* , thisArg */) {
-         return $findIndex(aTypedArray$6(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
+       var FORCED$b = fails$u(function () {
+         return [1, 2].toLocaleString() != new Int8Array$1([1, 2]).toLocaleString();
+       }) || !fails$u(function () {
+         Int8Array$1.prototype.toLocaleString.call([1, 2]);

        });
 
        });
 

-       var $forEach$2 = arrayIteration.forEach;
+       // `%TypedArray%.prototype.toLocaleString` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.tolocalestring
+       exportTypedArrayMethod$1('toLocaleString', function toLocaleString() {
+         return $toLocaleString.apply(TO_LOCALE_STRING_BUG ? $slice.call(aTypedArray(this)) : aTypedArray(this), arguments);
+       }, FORCED$b);

 
 

-       var aTypedArray$7 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$7 = arrayBufferViewCore.exportTypedArrayMethod;
+       var exportTypedArrayMethod = arrayBufferViewCore.exportTypedArrayMethod;
+       var fails$t = fails$N;
+       var global$b = global$F;

 
 

-       // `%TypedArray%.prototype.forEach` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.foreach
-       exportTypedArrayMethod$7('forEach', function forEach(callbackfn /* , thisArg */) {
-         $forEach$2(aTypedArray$7(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-       });
+       var Uint8Array$1 = global$b.Uint8Array;
+       var Uint8ArrayPrototype = Uint8Array$1 && Uint8Array$1.prototype || {};
+       var arrayToString = [].toString;
+       var arrayJoin = [].join;

 
 

-       var $includes = arrayIncludes.includes;
+       if (fails$t(function () { arrayToString.call({}); })) {
+         arrayToString = function toString() {
+           return arrayJoin.call(this);
+         };
+       }

 
 

-       var aTypedArray$8 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$8 = arrayBufferViewCore.exportTypedArrayMethod;
+       var IS_NOT_ARRAY_METHOD = Uint8ArrayPrototype.toString != arrayToString;

 
 

-       // `%TypedArray%.prototype.includes` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.includes
-       exportTypedArrayMethod$8('includes', function includes(searchElement /* , fromIndex */) {
-         return $includes(aTypedArray$8(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
-       });
+       // `%TypedArray%.prototype.toString` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.prototype.tostring
+       exportTypedArrayMethod('toString', arrayToString, IS_NOT_ARRAY_METHOD);

 
 

-       var $indexOf$1 = arrayIncludes.indexOf;
+       var $$T = _export;
+       var IndexedObject$1 = indexedObject;
+       var toIndexedObject$3 = toIndexedObject$b;
+       var arrayMethodIsStrict$4 = arrayMethodIsStrict$8;

 
 

-       var aTypedArray$9 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$9 = arrayBufferViewCore.exportTypedArrayMethod;
+       var nativeJoin = [].join;

 
 

-       // `%TypedArray%.prototype.indexOf` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.indexof
-       exportTypedArrayMethod$9('indexOf', function indexOf(searchElement /* , fromIndex */) {
-         return $indexOf$1(aTypedArray$9(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
-       });
+       var ES3_STRINGS = IndexedObject$1 != Object;
+       var STRICT_METHOD$4 = arrayMethodIsStrict$4('join', ',');

 
 

-       var ITERATOR$5 = wellKnownSymbol('iterator');
-       var Uint8Array$1 = global_1.Uint8Array;
-       var arrayValues = es_array_iterator.values;
-       var arrayKeys = es_array_iterator.keys;
-       var arrayEntries = es_array_iterator.entries;
-       var aTypedArray$a = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$a = arrayBufferViewCore.exportTypedArrayMethod;
-       var nativeTypedArrayIterator = Uint8Array$1 && Uint8Array$1.prototype[ITERATOR$5];
+       // `Array.prototype.join` method
+       // https://tc39.es/ecma262/#sec-array.prototype.join
+       $$T({ target: 'Array', proto: true, forced: ES3_STRINGS || !STRICT_METHOD$4 }, {
+         join: function join(separator) {
+           return nativeJoin.call(toIndexedObject$3(this), separator === undefined ? ',' : separator);
+         }
+       });

 
 

-       var CORRECT_ITER_NAME = !!nativeTypedArrayIterator
-         && (nativeTypedArrayIterator.name == 'values' || nativeTypedArrayIterator.name == undefined);
+       var toPrimitive$2 = toPrimitive$7;
+       var definePropertyModule = objectDefineProperty;
+       var createPropertyDescriptor$1 = createPropertyDescriptor$7;

 
 

-       var typedArrayValues = function values() {
-         return arrayValues.call(aTypedArray$a(this));
+       var createProperty$4 = function (object, key, value) {
+         var propertyKey = toPrimitive$2(key);
+         if (propertyKey in object) definePropertyModule.f(object, propertyKey, createPropertyDescriptor$1(0, value));
+         else object[propertyKey] = value;

        };
 
        };
 

-       // `%TypedArray%.prototype.entries` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.entries
-       exportTypedArrayMethod$a('entries', function entries() {
-         return arrayEntries.call(aTypedArray$a(this));
-       });
-       // `%TypedArray%.prototype.keys` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.keys
-       exportTypedArrayMethod$a('keys', function keys() {
-         return arrayKeys.call(aTypedArray$a(this));
-       });
-       // `%TypedArray%.prototype.values` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.values
-       exportTypedArrayMethod$a('values', typedArrayValues, !CORRECT_ITER_NAME);
-       // `%TypedArray%.prototype[@@iterator]` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype-@@iterator
-       exportTypedArrayMethod$a(ITERATOR$5, typedArrayValues, !CORRECT_ITER_NAME);
-
-       var aTypedArray$b = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$b = arrayBufferViewCore.exportTypedArrayMethod;
-       var $join = [].join;
+       var $$S = _export;
+       var isObject$d = isObject$r;
+       var isArray$2 = isArray$6;
+       var toAbsoluteIndex$2 = toAbsoluteIndex$8;
+       var toLength$a = toLength$q;
+       var toIndexedObject$2 = toIndexedObject$b;
+       var createProperty$3 = createProperty$4;
+       var wellKnownSymbol$8 = wellKnownSymbol$s;
+       var arrayMethodHasSpeciesSupport$3 = arrayMethodHasSpeciesSupport$5;

 
 

-       // `%TypedArray%.prototype.join` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.join
-       // eslint-disable-next-line no-unused-vars
-       exportTypedArrayMethod$b('join', function join(separator) {
-         return $join.apply(aTypedArray$b(this), arguments);
-       });
+       var HAS_SPECIES_SUPPORT$2 = arrayMethodHasSpeciesSupport$3('slice');

 
 

-       var min$5 = Math.min;
-       var nativeLastIndexOf = [].lastIndexOf;
-       var NEGATIVE_ZERO$1 = !!nativeLastIndexOf && 1 / [1].lastIndexOf(1, -0) < 0;
-       var STRICT_METHOD$3 = arrayMethodIsStrict('lastIndexOf');
-       // For preventing possible almost infinite loop in non-standard implementations, test the forward version of the method
-       var USES_TO_LENGTH$4 = arrayMethodUsesToLength('indexOf', { ACCESSORS: true, 1: 0 });
-       var FORCED$1 = NEGATIVE_ZERO$1 || !STRICT_METHOD$3 || !USES_TO_LENGTH$4;
-
-       // `Array.prototype.lastIndexOf` method implementation
-       // https://tc39.github.io/ecma262/#sec-array.prototype.lastindexof
-       var arrayLastIndexOf = FORCED$1 ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
-         // convert -0 to +0
-         if (NEGATIVE_ZERO$1) return nativeLastIndexOf.apply(this, arguments) || 0;
-         var O = toIndexedObject(this);
-         var length = toLength(O.length);
-         var index = length - 1;
-         if (arguments.length > 1) index = min$5(index, toInteger(arguments[1]));
-         if (index < 0) index = length + index;
-         for (;index >= 0; index--) if (index in O && O[index] === searchElement) return index || 0;
-         return -1;
-       } : nativeLastIndexOf;
-
-       var aTypedArray$c = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$c = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.lastIndexOf` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.lastindexof
-       // eslint-disable-next-line no-unused-vars
-       exportTypedArrayMethod$c('lastIndexOf', function lastIndexOf(searchElement /* , fromIndex */) {
-         return arrayLastIndexOf.apply(aTypedArray$c(this), arguments);
-       });
-
-       var $map$1 = arrayIteration.map;
-
-
-       var aTypedArray$d = arrayBufferViewCore.aTypedArray;
-       var aTypedArrayConstructor$3 = arrayBufferViewCore.aTypedArrayConstructor;
-       var exportTypedArrayMethod$d = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.map` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.map
-       exportTypedArrayMethod$d('map', function map(mapfn /* , thisArg */) {
-         return $map$1(aTypedArray$d(this), mapfn, arguments.length > 1 ? arguments[1] : undefined, function (O, length) {
-           return new (aTypedArrayConstructor$3(speciesConstructor(O, O.constructor)))(length);
-         });
-       });
+       var SPECIES$1 = wellKnownSymbol$8('species');
+       var nativeSlice = [].slice;
+       var max$3 = Math.max;

 
 

-       // `Array.prototype.{ reduce, reduceRight }` methods implementation
-       var createMethod$4 = function (IS_RIGHT) {
-         return function (that, callbackfn, argumentsLength, memo) {
-           aFunction$1(callbackfn);
-           var O = toObject(that);
-           var self = indexedObject(O);
-           var length = toLength(O.length);
-           var index = IS_RIGHT ? length - 1 : 0;
-           var i = IS_RIGHT ? -1 : 1;
-           if (argumentsLength < 2) while (true) {
-             if (index in self) {
-               memo = self[index];
-               index += i;
-               break;
-             }
-             index += i;
-             if (IS_RIGHT ? index < 0 : length <= index) {
-               throw TypeError('Reduce of empty array with no initial value');
+       // `Array.prototype.slice` method
+       // https://tc39.es/ecma262/#sec-array.prototype.slice
+       // fallback for not array-like ES3 strings and DOM objects
+       $$S({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$2 }, {
+         slice: function slice(start, end) {
+           var O = toIndexedObject$2(this);
+           var length = toLength$a(O.length);
+           var k = toAbsoluteIndex$2(start, length);
+           var fin = toAbsoluteIndex$2(end === undefined ? length : end, length);
+           // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible
+           var Constructor, result, n;
+           if (isArray$2(O)) {
+             Constructor = O.constructor;
+             // cross-realm fallback
+             if (typeof Constructor == 'function' && (Constructor === Array || isArray$2(Constructor.prototype))) {
+               Constructor = undefined;
+             } else if (isObject$d(Constructor)) {
+               Constructor = Constructor[SPECIES$1];
+               if (Constructor === null) Constructor = undefined;

              }
              }

-           }
-           for (;IS_RIGHT ? index >= 0 : length > index; index += i) if (index in self) {
-             memo = callbackfn(memo, self[index], index, O);
-           }
-           return memo;
-         };
-       };
-
-       var arrayReduce = {
-         // `Array.prototype.reduce` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.reduce
-         left: createMethod$4(false),
-         // `Array.prototype.reduceRight` method
-         // https://tc39.github.io/ecma262/#sec-array.prototype.reduceright
-         right: createMethod$4(true)
-       };
-
-       var $reduce = arrayReduce.left;
-
-       var aTypedArray$e = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$e = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.reduce` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduce
-       exportTypedArrayMethod$e('reduce', function reduce(callbackfn /* , initialValue */) {
-         return $reduce(aTypedArray$e(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
-       });
-
-       var $reduceRight = arrayReduce.right;
-
-       var aTypedArray$f = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$f = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.reduceRicht` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduceright
-       exportTypedArrayMethod$f('reduceRight', function reduceRight(callbackfn /* , initialValue */) {
-         return $reduceRight(aTypedArray$f(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
-       });
-
-       var aTypedArray$g = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$g = arrayBufferViewCore.exportTypedArrayMethod;
-       var floor$3 = Math.floor;
-
-       // `%TypedArray%.prototype.reverse` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reverse
-       exportTypedArrayMethod$g('reverse', function reverse() {
-         var that = this;
-         var length = aTypedArray$g(that).length;
-         var middle = floor$3(length / 2);
-         var index = 0;
-         var value;
-         while (index < middle) {
-           value = that[index];
-           that[index++] = that[--length];
-           that[length] = value;
-         } return that;
-       });
-
-       var aTypedArray$h = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$h = arrayBufferViewCore.exportTypedArrayMethod;
-
-       var FORCED$2 = fails(function () {
-         // eslint-disable-next-line no-undef
-         new Int8Array(1).set({});
-       });
-
-       // `%TypedArray%.prototype.set` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.set
-       exportTypedArrayMethod$h('set', function set(arrayLike /* , offset */) {
-         aTypedArray$h(this);
-         var offset = toOffset(arguments.length > 1 ? arguments[1] : undefined, 1);
-         var length = this.length;
-         var src = toObject(arrayLike);
-         var len = toLength(src.length);
-         var index = 0;
-         if (len + offset > length) throw RangeError('Wrong length');
-         while (index < len) this[offset + index] = src[index++];
-       }, FORCED$2);
-
-       var aTypedArray$i = arrayBufferViewCore.aTypedArray;
-       var aTypedArrayConstructor$4 = arrayBufferViewCore.aTypedArrayConstructor;
-       var exportTypedArrayMethod$i = arrayBufferViewCore.exportTypedArrayMethod;
-       var $slice = [].slice;
-
-       var FORCED$3 = fails(function () {
-         // eslint-disable-next-line no-undef
-         new Int8Array(1).slice();
-       });
-
-       // `%TypedArray%.prototype.slice` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.slice
-       exportTypedArrayMethod$i('slice', function slice(start, end) {
-         var list = $slice.call(aTypedArray$i(this), start, end);
-         var C = speciesConstructor(this, this.constructor);
-         var index = 0;
-         var length = list.length;
-         var result = new (aTypedArrayConstructor$4(C))(length);
-         while (length > index) result[index] = list[index++];
-         return result;
-       }, FORCED$3);
-
-       var $some = arrayIteration.some;
-
-       var aTypedArray$j = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$j = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.some` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.some
-       exportTypedArrayMethod$j('some', function some(callbackfn /* , thisArg */) {
-         return $some(aTypedArray$j(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
-       });
-
-       var aTypedArray$k = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$k = arrayBufferViewCore.exportTypedArrayMethod;
-       var $sort = [].sort;
-
-       // `%TypedArray%.prototype.sort` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.sort
-       exportTypedArrayMethod$k('sort', function sort(comparefn) {
-         return $sort.call(aTypedArray$k(this), comparefn);
-       });
-
-       var aTypedArray$l = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$l = arrayBufferViewCore.exportTypedArrayMethod;
-
-       // `%TypedArray%.prototype.subarray` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.subarray
-       exportTypedArrayMethod$l('subarray', function subarray(begin, end) {
-         var O = aTypedArray$l(this);
-         var length = O.length;
-         var beginIndex = toAbsoluteIndex(begin, length);
-         return new (speciesConstructor(O, O.constructor))(
-           O.buffer,
-           O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,
-           toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex)
-         );
-       });
-
-       var Int8Array$3 = global_1.Int8Array;
-       var aTypedArray$m = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$m = arrayBufferViewCore.exportTypedArrayMethod;
-       var $toLocaleString = [].toLocaleString;
-       var $slice$1 = [].slice;
-
-       // iOS Safari 6.x fails here
-       var TO_LOCALE_STRING_BUG = !!Int8Array$3 && fails(function () {
-         $toLocaleString.call(new Int8Array$3(1));
-       });
-
-       var FORCED$4 = fails(function () {
-         return [1, 2].toLocaleString() != new Int8Array$3([1, 2]).toLocaleString();
-       }) || !fails(function () {
-         Int8Array$3.prototype.toLocaleString.call([1, 2]);
-       });
-
-       // `%TypedArray%.prototype.toLocaleString` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tolocalestring
-       exportTypedArrayMethod$m('toLocaleString', function toLocaleString() {
-         return $toLocaleString.apply(TO_LOCALE_STRING_BUG ? $slice$1.call(aTypedArray$m(this)) : aTypedArray$m(this), arguments);
-       }, FORCED$4);
-
-       var exportTypedArrayMethod$n = arrayBufferViewCore.exportTypedArrayMethod;
-
-
-
-       var Uint8Array$2 = global_1.Uint8Array;
-       var Uint8ArrayPrototype = Uint8Array$2 && Uint8Array$2.prototype || {};
-       var arrayToString = [].toString;
-       var arrayJoin = [].join;
-
-       if (fails(function () { arrayToString.call({}); })) {
-         arrayToString = function toString() {
-           return arrayJoin.call(this);
-         };
-       }
-
-       var IS_NOT_ARRAY_METHOD = Uint8ArrayPrototype.toString != arrayToString;
-
-       // `%TypedArray%.prototype.toString` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tostring
-       exportTypedArrayMethod$n('toString', arrayToString, IS_NOT_ARRAY_METHOD);
-
-       // iterable DOM collections
-       // flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods
-       var domIterables = {
-         CSSRuleList: 0,
-         CSSStyleDeclaration: 0,
-         CSSValueList: 0,
-         ClientRectList: 0,
-         DOMRectList: 0,
-         DOMStringList: 0,
-         DOMTokenList: 1,
-         DataTransferItemList: 0,
-         FileList: 0,
-         HTMLAllCollection: 0,
-         HTMLCollection: 0,
-         HTMLFormElement: 0,
-         HTMLSelectElement: 0,
-         MediaList: 0,
-         MimeTypeArray: 0,
-         NamedNodeMap: 0,
-         NodeList: 1,
-         PaintRequestList: 0,
-         Plugin: 0,
-         PluginArray: 0,
-         SVGLengthList: 0,
-         SVGNumberList: 0,
-         SVGPathSegList: 0,
-         SVGPointList: 0,
-         SVGStringList: 0,
-         SVGTransformList: 0,
-         SourceBufferList: 0,
-         StyleSheetList: 0,
-         TextTrackCueList: 0,
-         TextTrackList: 0,
-         TouchList: 0
-       };
-
-       for (var COLLECTION_NAME in domIterables) {
-         var Collection = global_1[COLLECTION_NAME];
-         var CollectionPrototype = Collection && Collection.prototype;
-         // some Chrome versions have non-configurable methods on DOMTokenList
-         if (CollectionPrototype && CollectionPrototype.forEach !== arrayForEach) try {
-           createNonEnumerableProperty(CollectionPrototype, 'forEach', arrayForEach);
-         } catch (error) {
-           CollectionPrototype.forEach = arrayForEach;
-         }
-       }
-
-       var ITERATOR$6 = wellKnownSymbol('iterator');
-       var TO_STRING_TAG$4 = wellKnownSymbol('toStringTag');
-       var ArrayValues = es_array_iterator.values;
-
-       for (var COLLECTION_NAME$1 in domIterables) {
-         var Collection$1 = global_1[COLLECTION_NAME$1];
-         var CollectionPrototype$1 = Collection$1 && Collection$1.prototype;
-         if (CollectionPrototype$1) {
-           // some Chrome versions have non-configurable methods on DOMTokenList
-           if (CollectionPrototype$1[ITERATOR$6] !== ArrayValues) try {
-             createNonEnumerableProperty(CollectionPrototype$1, ITERATOR$6, ArrayValues);
-           } catch (error) {
-             CollectionPrototype$1[ITERATOR$6] = ArrayValues;
-           }
-           if (!CollectionPrototype$1[TO_STRING_TAG$4]) {
-             createNonEnumerableProperty(CollectionPrototype$1, TO_STRING_TAG$4, COLLECTION_NAME$1);
-           }
-           if (domIterables[COLLECTION_NAME$1]) for (var METHOD_NAME in es_array_iterator) {
-             // some Chrome versions have non-configurable methods on DOMTokenList
-             if (CollectionPrototype$1[METHOD_NAME] !== es_array_iterator[METHOD_NAME]) try {
-               createNonEnumerableProperty(CollectionPrototype$1, METHOD_NAME, es_array_iterator[METHOD_NAME]);
-             } catch (error) {
-               CollectionPrototype$1[METHOD_NAME] = es_array_iterator[METHOD_NAME];
+             if (Constructor === Array || Constructor === undefined) {
+               return nativeSlice.call(O, k, fin);

              }
            }
              }
            }

+           result = new (Constructor === undefined ? Array : Constructor)(max$3(fin - k, 0));
+           for (n = 0; k < fin; k++, n++) if (k in O) createProperty$3(result, n, O[k]);
+           result.length = n;
+           return result;

          }
          }

-       }
-
-       var slice = [].slice;
-       var MSIE = /MSIE .\./.test(engineUserAgent); // <- dirty ie9- check
-
-       var wrap$1 = function (scheduler) {
-         return function (handler, timeout /* , ...arguments */) {
-           var boundArgs = arguments.length > 2;
-           var args = boundArgs ? slice.call(arguments, 2) : undefined;
-           return scheduler(boundArgs ? function () {
-             // eslint-disable-next-line no-new-func
-             (typeof handler == 'function' ? handler : Function(handler)).apply(this, args);
-           } : handler, timeout);
-         };
-       };
-
-       // ie9- setTimeout & setInterval additional parameters fix
-       // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#timers
-       _export({ global: true, bind: true, forced: MSIE }, {
-         // `setTimeout` method
-         // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-settimeout
-         setTimeout: wrap$1(global_1.setTimeout),
-         // `setInterval` method
-         // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-setinterval
-         setInterval: wrap$1(global_1.setInterval)

        });
 
        });
 

-       var ITERATOR$7 = wellKnownSymbol('iterator');
+       var fails$s = fails$N;
+       var wellKnownSymbol$7 = wellKnownSymbol$s;
+       var IS_PURE = isPure;

 
 

-       var nativeUrl = !fails(function () {
+       var ITERATOR$1 = wellKnownSymbol$7('iterator');
+
+       var nativeUrl = !fails$s(function () {

          var url = new URL('b?a=1&b=2&c=3', 'http://a');
          var searchParams = url.searchParams;
          var result = '';
          var url = new URL('b?a=1&b=2&c=3', 'http://a');
          var searchParams = url.searchParams;
          var result = '';


@@ -4439,12 +4643,12 @@
            searchParams['delete']('b');
            result += key + value;
          });
            searchParams['delete']('b');
            result += key + value;
          });

-         return (isPure && !url.toJSON)
+         return (IS_PURE && !url.toJSON)

            || !searchParams.sort
            || url.href !== 'http://a/c%20d?a=1&c=3'
            || searchParams.get('c') !== '3'
            || String(new URLSearchParams('?a=1')) !== 'a=1'
            || !searchParams.sort
            || url.href !== 'http://a/c%20d?a=1&c=3'
            || searchParams.get('c') !== '3'
            || String(new URLSearchParams('?a=1')) !== 'a=1'

-           || !searchParams[ITERATOR$7]
+           || !searchParams[ITERATOR$1]

            // throws in Edge
            || new URL('https://a@b').username !== 'a'
            || new URLSearchParams(new URLSearchParams('a=b')).get('a') !== 'b'
            // throws in Edge
            || new URL('https://a@b').username !== 'a'
            || new URLSearchParams(new URLSearchParams('a=b')).get('a') !== 'b'


@@ -4458,17 +4662,27 @@
            || new URL('http://x', undefined).host !== 'x';
        });
 
            || new URL('http://x', undefined).host !== 'x';
        });
 

-       var nativeAssign = Object.assign;
-       var defineProperty$7 = Object.defineProperty;
+       var DESCRIPTORS$b = descriptors;
+       var fails$r = fails$N;
+       var objectKeys$1 = objectKeys$4;
+       var getOwnPropertySymbolsModule = objectGetOwnPropertySymbols;
+       var propertyIsEnumerableModule = objectPropertyIsEnumerable;
+       var toObject$8 = toObject$i;
+       var IndexedObject = indexedObject;
+
+       // eslint-disable-next-line es/no-object-assign -- safe
+       var $assign = Object.assign;
+       // eslint-disable-next-line es/no-object-defineproperty -- required for testing
+       var defineProperty$5 = Object.defineProperty;

 
        // `Object.assign` method
 
        // `Object.assign` method

-       // https://tc39.github.io/ecma262/#sec-object.assign
-       var objectAssign = !nativeAssign || fails(function () {
+       // https://tc39.es/ecma262/#sec-object.assign
+       var objectAssign = !$assign || fails$r(function () {

          // should have correct order of operations (Edge bug)
          // should have correct order of operations (Edge bug)

-         if (descriptors && nativeAssign({ b: 1 }, nativeAssign(defineProperty$7({}, 'a', {
+         if (DESCRIPTORS$b && $assign({ b: 1 }, $assign(defineProperty$5({}, 'a', {

            enumerable: true,
            get: function () {
            enumerable: true,
            get: function () {

-             defineProperty$7(this, 'b', {
+             defineProperty$5(this, 'b', {

                value: 3,
                enumerable: false
              });
                value: 3,
                enumerable: false
              });


@@ -4477,43 +4691,64 @@
          // should work with symbols and should have deterministic property order (V8 bug)
          var A = {};
          var B = {};
          // should work with symbols and should have deterministic property order (V8 bug)
          var A = {};
          var B = {};

-         // eslint-disable-next-line no-undef
+         // eslint-disable-next-line es/no-symbol -- safe

          var symbol = Symbol();
          var alphabet = 'abcdefghijklmnopqrst';
          A[symbol] = 7;
          alphabet.split('').forEach(function (chr) { B[chr] = chr; });
          var symbol = Symbol();
          var alphabet = 'abcdefghijklmnopqrst';
          A[symbol] = 7;
          alphabet.split('').forEach(function (chr) { B[chr] = chr; });

-         return nativeAssign({}, A)[symbol] != 7 || objectKeys(nativeAssign({}, B)).join('') != alphabet;
-       }) ? function assign(target, source) { // eslint-disable-line no-unused-vars
-         var T = toObject(target);
+         return $assign({}, A)[symbol] != 7 || objectKeys$1($assign({}, B)).join('') != alphabet;
+       }) ? function assign(target, source) { // eslint-disable-line no-unused-vars -- required for `.length`
+         var T = toObject$8(target);

          var argumentsLength = arguments.length;
          var index = 1;
          var argumentsLength = arguments.length;
          var index = 1;

-         var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
-         var propertyIsEnumerable = objectPropertyIsEnumerable.f;
+         var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;
+         var propertyIsEnumerable = propertyIsEnumerableModule.f;

          while (argumentsLength > index) {
          while (argumentsLength > index) {

-           var S = indexedObject(arguments[index++]);
-           var keys = getOwnPropertySymbols ? objectKeys(S).concat(getOwnPropertySymbols(S)) : objectKeys(S);
+           var S = IndexedObject(arguments[index++]);
+           var keys = getOwnPropertySymbols ? objectKeys$1(S).concat(getOwnPropertySymbols(S)) : objectKeys$1(S);

            var length = keys.length;
            var j = 0;
            var key;
            while (length > j) {
              key = keys[j++];
            var length = keys.length;
            var j = 0;
            var key;
            while (length > j) {
              key = keys[j++];

-             if (!descriptors || propertyIsEnumerable.call(S, key)) T[key] = S[key];
+             if (!DESCRIPTORS$b || propertyIsEnumerable.call(S, key)) T[key] = S[key];

            }
          } return T;
            }
          } return T;

-       } : nativeAssign;
+       } : $assign;
+
+       var anObject$a = anObject$m;
+       var iteratorClose = iteratorClose$2;
+
+       // call something on iterator step with safe closing on error
+       var callWithSafeIterationClosing$1 = function (iterator, fn, value, ENTRIES) {
+         try {
+           return ENTRIES ? fn(anObject$a(value)[0], value[1]) : fn(value);
+         } catch (error) {
+           iteratorClose(iterator);
+           throw error;
+         }
+       };
+
+       var bind$6 = functionBindContext;
+       var toObject$7 = toObject$i;
+       var callWithSafeIterationClosing = callWithSafeIterationClosing$1;
+       var isArrayIteratorMethod = isArrayIteratorMethod$3;
+       var toLength$9 = toLength$q;
+       var createProperty$2 = createProperty$4;
+       var getIteratorMethod$2 = getIteratorMethod$5;

 
        // `Array.from` method implementation
 
        // `Array.from` method implementation

-       // https://tc39.github.io/ecma262/#sec-array.from
-       var arrayFrom = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
-         var O = toObject(arrayLike);
+       // https://tc39.es/ecma262/#sec-array.from
+       var arrayFrom$1 = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
+         var O = toObject$7(arrayLike);

          var C = typeof this == 'function' ? this : Array;
          var argumentsLength = arguments.length;
          var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
          var mapping = mapfn !== undefined;
          var C = typeof this == 'function' ? this : Array;
          var argumentsLength = arguments.length;
          var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
          var mapping = mapfn !== undefined;

-         var iteratorMethod = getIteratorMethod(O);
+         var iteratorMethod = getIteratorMethod$2(O);

          var index = 0;
          var length, result, step, iterator, next, value;
          var index = 0;
          var length, result, step, iterator, next, value;

-         if (mapping) mapfn = functionBindContext(mapfn, argumentsLength > 2 ? arguments[2] : undefined, 2);
+         if (mapping) mapfn = bind$6(mapfn, argumentsLength > 2 ? arguments[2] : undefined, 2);

          // if the target is not iterable or it's an array with the default iterator - use a simple case
          if (iteratorMethod != undefined && !(C == Array && isArrayIteratorMethod(iteratorMethod))) {
            iterator = iteratorMethod.call(O);
          // if the target is not iterable or it's an array with the default iterator - use a simple case
          if (iteratorMethod != undefined && !(C == Array && isArrayIteratorMethod(iteratorMethod))) {
            iterator = iteratorMethod.call(O);


@@ -4521,14 +4756,14 @@
            result = new C();
            for (;!(step = next.call(iterator)).done; index++) {
              value = mapping ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true) : step.value;
            result = new C();
            for (;!(step = next.call(iterator)).done; index++) {
              value = mapping ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true) : step.value;

-             createProperty(result, index, value);
+             createProperty$2(result, index, value);

            }
          } else {
            }
          } else {

-           length = toLength(O.length);
+           length = toLength$9(O.length);

            result = new C(length);
            for (;length > index; index++) {
              value = mapping ? mapfn(O[index], index) : O[index];
            result = new C(length);
            for (;length > index; index++) {
              value = mapping ? mapfn(O[index], index) : O[index];

-             createProperty(result, index, value);
+             createProperty$2(result, index, value);

            }
          }
          result.length = index;
            }
          }
          result.length = index;


@@ -4549,7 +4784,7 @@
        var regexSeparators = /[.\u3002\uFF0E\uFF61]/g; // RFC 3490 separators
        var OVERFLOW_ERROR = 'Overflow: input needs wider integers to process';
        var baseMinusTMin = base - tMin;
        var regexSeparators = /[.\u3002\uFF0E\uFF61]/g; // RFC 3490 separators
        var OVERFLOW_ERROR = 'Overflow: input needs wider integers to process';
        var baseMinusTMin = base - tMin;

-       var floor$4 = Math.floor;
+       var floor$3 = Math.floor;

        var stringFromCharCode = String.fromCharCode;
 
        /**
        var stringFromCharCode = String.fromCharCode;
 
        /**


@@ -4598,19 +4833,19 @@
         */
        var adapt = function (delta, numPoints, firstTime) {
          var k = 0;
         */
        var adapt = function (delta, numPoints, firstTime) {
          var k = 0;

-         delta = firstTime ? floor$4(delta / damp) : delta >> 1;
-         delta += floor$4(delta / numPoints);
+         delta = firstTime ? floor$3(delta / damp) : delta >> 1;
+         delta += floor$3(delta / numPoints);

          for (; delta > baseMinusTMin * tMax >> 1; k += base) {
          for (; delta > baseMinusTMin * tMax >> 1; k += base) {

-           delta = floor$4(delta / baseMinusTMin);
+           delta = floor$3(delta / baseMinusTMin);

          }
          }

-         return floor$4(k + (baseMinusTMin + 1) * delta / (delta + skew));
+         return floor$3(k + (baseMinusTMin + 1) * delta / (delta + skew));

        };
 
        /**
         * Converts a string of Unicode symbols (e.g. a domain name label) to a
         * Punycode string of ASCII-only symbols.
         */
        };
 
        /**
         * Converts a string of Unicode symbols (e.g. a domain name label) to a
         * Punycode string of ASCII-only symbols.
         */

-       // eslint-disable-next-line  max-statements
+       // eslint-disable-next-line max-statements -- TODO

        var encode = function (input) {
          var output = [];
 
        var encode = function (input) {
          var output = [];
 


@@ -4655,7 +4890,7 @@
 
            // Increase `delta` enough to advance the decoder's <n,i> state to <m,0>, but guard against overflow.
            var handledCPCountPlusOne = handledCPCount + 1;
 
            // Increase `delta` enough to advance the decoder's <n,i> state to <m,0>, but guard against overflow.
            var handledCPCountPlusOne = handledCPCount + 1;

-           if (m - n > floor$4((maxInt - delta) / handledCPCountPlusOne)) {
+           if (m - n > floor$3((maxInt - delta) / handledCPCountPlusOne)) {

              throw RangeError(OVERFLOW_ERROR);
            }
 
              throw RangeError(OVERFLOW_ERROR);
            }
 


@@ -4676,7 +4911,7 @@
                  var qMinusT = q - t;
                  var baseMinusT = base - t;
                  output.push(stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT)));
                  var qMinusT = q - t;
                  var baseMinusT = base - t;
                  output.push(stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT)));

-                 q = floor$4(qMinusT / baseMinusT);
+                 q = floor$3(qMinusT / baseMinusT);

                }
 
                output.push(stringFromCharCode(digitToBasic(q)));
                }
 
                output.push(stringFromCharCode(digitToBasic(q)));


@@ -4703,43 +4938,46 @@
          return encoded.join('.');
        };
 
          return encoded.join('.');
        };
 

-       var getIterator = function (it) {
-         var iteratorMethod = getIteratorMethod(it);
+       var anObject$9 = anObject$m;
+       var getIteratorMethod$1 = getIteratorMethod$5;
+
+       var getIterator$1 = function (it) {
+         var iteratorMethod = getIteratorMethod$1(it);

          if (typeof iteratorMethod != 'function') {
            throw TypeError(String(it) + ' is not iterable');
          if (typeof iteratorMethod != 'function') {
            throw TypeError(String(it) + ' is not iterable');

-         } return anObject(iteratorMethod.call(it));
+         } return anObject$9(iteratorMethod.call(it));

        };
 
        // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 
        };
 
        // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-       var $fetch$1 = getBuiltIn('fetch');
-       var Headers = getBuiltIn('Headers');
-       var ITERATOR$8 = wellKnownSymbol('iterator');
+       var $$R = _export;
+       var getBuiltIn$2 = getBuiltIn$9;
+       var USE_NATIVE_URL$1 = nativeUrl;
+       var redefine$7 = redefine$g.exports;
+       var redefineAll$1 = redefineAll$4;
+       var setToStringTag$4 = setToStringTag$a;
+       var createIteratorConstructor = createIteratorConstructor$2;
+       var InternalStateModule$2 = internalState;
+       var anInstance$3 = anInstance$7;
+       var hasOwn = has$j;
+       var bind$5 = functionBindContext;
+       var classof$4 = classof$b;
+       var anObject$8 = anObject$m;
+       var isObject$c = isObject$r;
+       var create$8 = objectCreate;
+       var createPropertyDescriptor = createPropertyDescriptor$7;
+       var getIterator = getIterator$1;
+       var getIteratorMethod = getIteratorMethod$5;
+       var wellKnownSymbol$6 = wellKnownSymbol$s;
+
+       var $fetch = getBuiltIn$2('fetch');
+       var Headers$1 = getBuiltIn$2('Headers');
+       var ITERATOR = wellKnownSymbol$6('iterator');

        var URL_SEARCH_PARAMS = 'URLSearchParams';
        var URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';
        var URL_SEARCH_PARAMS = 'URLSearchParams';
        var URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';

-       var setInternalState$5 = internalState.set;
-       var getInternalParamsState = internalState.getterFor(URL_SEARCH_PARAMS);
-       var getInternalIteratorState = internalState.getterFor(URL_SEARCH_PARAMS_ITERATOR);
+       var setInternalState$2 = InternalStateModule$2.set;
+       var getInternalParamsState = InternalStateModule$2.getterFor(URL_SEARCH_PARAMS);
+       var getInternalIteratorState = InternalStateModule$2.getterFor(URL_SEARCH_PARAMS_ITERATOR);

 
        var plus = /\+/g;
        var sequences = Array(4);
 
        var plus = /\+/g;
        var sequences = Array(4);


@@ -4769,9 +5007,9 @@
          }
        };
 
          }
        };
 

-       var find = /[!'()~]|%20/g;
+       var find$1 = /[!'()~]|%20/g;

 
 

-       var replace = {
+       var replace$1 = {

          '!': '%21',
          "'": '%27',
          '(': '%28',
          '!': '%21',
          "'": '%27',
          '(': '%28',


@@ -4781,11 +5019,11 @@
        };
 
        var replacer = function (match) {
        };
 
        var replacer = function (match) {

-         return replace[match];
+         return replace$1[match];

        };
 
        var serialize = function (it) {
        };
 
        var serialize = function (it) {

-         return encodeURIComponent(it).replace(find, replacer);
+         return encodeURIComponent(it).replace(find$1, replacer);

        };
 
        var parseSearchParams = function (result, query) {
        };
 
        var parseSearchParams = function (result, query) {


@@ -4816,7 +5054,7 @@
        };
 
        var URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {
        };
 
        var URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {

-         setInternalState$5(this, {
+         setInternalState$2(this, {

            type: URL_SEARCH_PARAMS_ITERATOR,
            iterator: getIterator(getInternalParamsState(params).entries),
            kind: kind
            type: URL_SEARCH_PARAMS_ITERATOR,
            iterator: getIterator(getInternalParamsState(params).entries),
            kind: kind


@@ -4834,13 +5072,13 @@
        // `URLSearchParams` constructor
        // https://url.spec.whatwg.org/#interface-urlsearchparams
        var URLSearchParamsConstructor = function URLSearchParams(/* init */) {
        // `URLSearchParams` constructor
        // https://url.spec.whatwg.org/#interface-urlsearchparams
        var URLSearchParamsConstructor = function URLSearchParams(/* init */) {

-         anInstance(this, URLSearchParamsConstructor, URL_SEARCH_PARAMS);
+         anInstance$3(this, URLSearchParamsConstructor, URL_SEARCH_PARAMS);

          var init = arguments.length > 0 ? arguments[0] : undefined;
          var that = this;
          var entries = [];
          var iteratorMethod, iterator, next, step, entryIterator, entryNext, first, second, key;
 
          var init = arguments.length > 0 ? arguments[0] : undefined;
          var that = this;
          var entries = [];
          var iteratorMethod, iterator, next, step, entryIterator, entryNext, first, second, key;
 

-         setInternalState$5(that, {
+         setInternalState$2(that, {

            type: URL_SEARCH_PARAMS,
            entries: entries,
            updateURL: function () { /* empty */ },
            type: URL_SEARCH_PARAMS,
            entries: entries,
            updateURL: function () { /* empty */ },


@@ -4848,13 +5086,13 @@
          });
 
          if (init !== undefined) {
          });
 
          if (init !== undefined) {

-           if (isObject(init)) {
+           if (isObject$c(init)) {

              iteratorMethod = getIteratorMethod(init);
              if (typeof iteratorMethod === 'function') {
                iterator = iteratorMethod.call(init);
                next = iterator.next;
                while (!(step = next.call(iterator)).done) {
              iteratorMethod = getIteratorMethod(init);
              if (typeof iteratorMethod === 'function') {
                iterator = iteratorMethod.call(init);
                next = iterator.next;
                while (!(step = next.call(iterator)).done) {

-                 entryIterator = getIterator(anObject(step.value));
+                 entryIterator = getIterator(anObject$8(step.value));

                  entryNext = entryIterator.next;
                  if (
                    (first = entryNext.call(entryIterator)).done ||
                  entryNext = entryIterator.next;
                  if (
                    (first = entryNext.call(entryIterator)).done ||


@@ -4863,7 +5101,7 @@
                  ) throw TypeError('Expected sequence with length 2');
                  entries.push({ key: first.value + '', value: second.value + '' });
                }
                  ) throw TypeError('Expected sequence with length 2');
                  entries.push({ key: first.value + '', value: second.value + '' });
                }

-             } else for (key in init) if (has(init, key)) entries.push({ key: key, value: init[key] + '' });
+             } else for (key in init) if (hasOwn(init, key)) entries.push({ key: key, value: init[key] + '' });

            } else {
              parseSearchParams(entries, typeof init === 'string' ? init.charAt(0) === '?' ? init.slice(1) : init : init + '');
            }
            } else {
              parseSearchParams(entries, typeof init === 'string' ? init.charAt(0) === '?' ? init.slice(1) : init : init + '');
            }


@@ -4872,8 +5110,8 @@
 
        var URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;
 
 
        var URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;
 

-       redefineAll(URLSearchParamsPrototype, {
-         // `URLSearchParams.prototype.appent` method
+       redefineAll$1(URLSearchParamsPrototype, {
+         // `URLSearchParams.prototype.append` method

          // https://url.spec.whatwg.org/#dom-urlsearchparams-append
          append: function append(name, value) {
            validateArgumentsLength(arguments.length, 2);
          // https://url.spec.whatwg.org/#dom-urlsearchparams-append
          append: function append(name, value) {
            validateArgumentsLength(arguments.length, 2);


@@ -4980,7 +5218,7 @@
          // `URLSearchParams.prototype.forEach` method
          forEach: function forEach(callback /* , thisArg */) {
            var entries = getInternalParamsState(this).entries;
          // `URLSearchParams.prototype.forEach` method
          forEach: function forEach(callback /* , thisArg */) {
            var entries = getInternalParamsState(this).entries;

-           var boundFunction = functionBindContext(callback, arguments.length > 1 ? arguments[1] : undefined, 3);
+           var boundFunction = bind$5(callback, arguments.length > 1 ? arguments[1] : undefined, 3);

            var index = 0;
            var entry;
            while (index < entries.length) {
            var index = 0;
            var entry;
            while (index < entries.length) {


@@ -5003,11 +5241,11 @@
        }, { enumerable: true });
 
        // `URLSearchParams.prototype[@@iterator]` method
        }, { enumerable: true });
 
        // `URLSearchParams.prototype[@@iterator]` method

-       redefine(URLSearchParamsPrototype, ITERATOR$8, URLSearchParamsPrototype.entries);
+       redefine$7(URLSearchParamsPrototype, ITERATOR, URLSearchParamsPrototype.entries);

 
        // `URLSearchParams.prototype.toString` method
        // https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior
 
        // `URLSearchParams.prototype.toString` method
        // https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior

-       redefine(URLSearchParamsPrototype, 'toString', function toString() {
+       redefine$7(URLSearchParamsPrototype, 'toString', function toString() {

          var entries = getInternalParamsState(this).entries;
          var result = [];
          var index = 0;
          var entries = getInternalParamsState(this).entries;
          var result = [];
          var index = 0;


@@ -5018,36 +5256,36 @@
          } return result.join('&');
        }, { enumerable: true });
 
          } return result.join('&');
        }, { enumerable: true });
 

-       setToStringTag(URLSearchParamsConstructor, URL_SEARCH_PARAMS);
+       setToStringTag$4(URLSearchParamsConstructor, URL_SEARCH_PARAMS);

 
 

-       _export({ global: true, forced: !nativeUrl }, {
+       $$R({ global: true, forced: !USE_NATIVE_URL$1 }, {

          URLSearchParams: URLSearchParamsConstructor
        });
 
        // Wrap `fetch` for correct work with polyfilled `URLSearchParams`
        // https://github.com/zloirock/core-js/issues/674
          URLSearchParams: URLSearchParamsConstructor
        });
 
        // Wrap `fetch` for correct work with polyfilled `URLSearchParams`
        // https://github.com/zloirock/core-js/issues/674

-       if (!nativeUrl && typeof $fetch$1 == 'function' && typeof Headers == 'function') {
-         _export({ global: true, enumerable: true, forced: true }, {
+       if (!USE_NATIVE_URL$1 && typeof $fetch == 'function' && typeof Headers$1 == 'function') {
+         $$R({ global: true, enumerable: true, forced: true }, {

            fetch: function fetch(input /* , init */) {
              var args = [input];
              var init, body, headers;
              if (arguments.length > 1) {
                init = arguments[1];
            fetch: function fetch(input /* , init */) {
              var args = [input];
              var init, body, headers;
              if (arguments.length > 1) {
                init = arguments[1];

-               if (isObject(init)) {
+               if (isObject$c(init)) {

                  body = init.body;
                  body = init.body;

-                 if (classof(body) === URL_SEARCH_PARAMS) {
-                   headers = init.headers ? new Headers(init.headers) : new Headers();
+                 if (classof$4(body) === URL_SEARCH_PARAMS) {
+                   headers = init.headers ? new Headers$1(init.headers) : new Headers$1();

                    if (!headers.has('content-type')) {
                      headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8');
                    }
                    if (!headers.has('content-type')) {
                      headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8');
                    }

-                   init = objectCreate(init, {
+                   init = create$8(init, {

                      body: createPropertyDescriptor(0, String(body)),
                      headers: createPropertyDescriptor(0, headers)
                    });
                  }
                }
                args.push(init);
                      body: createPropertyDescriptor(0, String(body)),
                      headers: createPropertyDescriptor(0, headers)
                    });
                  }
                }
                args.push(init);

-             } return $fetch$1.apply(this, args);
+             } return $fetch.apply(this, args);

            }
          });
        }
            }
          });
        }


@@ -5059,28 +5297,28 @@
 
        // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 
 
        // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 

-
-
-
-
-
-
-
-
-
-
+       var $$Q = _export;
+       var DESCRIPTORS$a = descriptors;
+       var USE_NATIVE_URL = nativeUrl;
+       var global$a = global$F;
+       var defineProperties$1 = objectDefineProperties;
+       var redefine$6 = redefine$g.exports;
+       var anInstance$2 = anInstance$7;
+       var has$4 = has$j;
+       var assign$2 = objectAssign;
+       var arrayFrom = arrayFrom$1;

        var codeAt = stringMultibyte.codeAt;
        var codeAt = stringMultibyte.codeAt;

-
-
-
-
-
-       var NativeURL = global_1.URL;
-       var URLSearchParams$1 = web_urlSearchParams.URLSearchParams;
-       var getInternalSearchParamsState = web_urlSearchParams.getState;
-       var setInternalState$6 = internalState.set;
-       var getInternalURLState = internalState.getterFor('URL');
-       var floor$5 = Math.floor;
+       var toASCII = stringPunycodeToAscii;
+       var setToStringTag$3 = setToStringTag$a;
+       var URLSearchParamsModule = web_urlSearchParams;
+       var InternalStateModule$1 = internalState;
+
+       var NativeURL = global$a.URL;
+       var URLSearchParams$1 = URLSearchParamsModule.URLSearchParams;
+       var getInternalSearchParamsState = URLSearchParamsModule.getState;
+       var setInternalState$1 = InternalStateModule$1.set;
+       var getInternalURLState = InternalStateModule$1.getterFor('URL');
+       var floor$2 = Math.floor;

        var pow$1 = Math.pow;
 
        var INVALID_AUTHORITY = 'Invalid authority';
        var pow$1 = Math.pow;
 
        var INVALID_AUTHORITY = 'Invalid authority';


@@ -5089,20 +5327,19 @@
        var INVALID_PORT = 'Invalid port';
 
        var ALPHA = /[A-Za-z]/;
        var INVALID_PORT = 'Invalid port';
 
        var ALPHA = /[A-Za-z]/;

+       // eslint-disable-next-line regexp/no-obscure-range -- safe

        var ALPHANUMERIC = /[\d+-.A-Za-z]/;
        var DIGIT = /\d/;
        var ALPHANUMERIC = /[\d+-.A-Za-z]/;
        var DIGIT = /\d/;

-       var HEX_START = /^(0x|0X)/;
+       var HEX_START = /^0x/i;

        var OCT = /^[0-7]+$/;
        var DEC = /^\d+$/;
        var HEX = /^[\dA-Fa-f]+$/;
        var OCT = /^[0-7]+$/;
        var DEC = /^\d+$/;
        var HEX = /^[\dA-Fa-f]+$/;

-       // eslint-disable-next-line no-control-regex
-       var FORBIDDEN_HOST_CODE_POINT = /[\u0000\u0009\u000A\u000D #%/:?@[\\]]/;
-       // eslint-disable-next-line no-control-regex
-       var FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT = /[\u0000\u0009\u000A\u000D #/:?@[\\]]/;
-       // eslint-disable-next-line no-control-regex
+       /* eslint-disable no-control-regex -- safe */
+       var FORBIDDEN_HOST_CODE_POINT = /[\0\t\n\r #%/:<>?@[\\\]^|]/;
+       var FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT = /[\0\t\n\r #/:<>?@[\\\]^|]/;

        var LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE = /^[\u0000-\u001F ]+|[\u0000-\u001F ]+$/g;
        var LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE = /^[\u0000-\u001F ]+|[\u0000-\u001F ]+$/g;

-       // eslint-disable-next-line no-control-regex
-       var TAB_AND_NEW_LINE = /[\u0009\u000A\u000D]/g;
+       var TAB_AND_NEW_LINE = /[\t\n\r]/g;
+       /* eslint-enable no-control-regex -- safe */

        var EOF;
 
        var parseHost = function (url, input) {
        var EOF;
 
        var parseHost = function (url, input) {


@@ -5122,7 +5359,7 @@
            }
            url.host = result;
          } else {
            }
            url.host = result;
          } else {

-           input = stringPunycodeToAscii(input);
+           input = toASCII(input);

            if (FORBIDDEN_HOST_CODE_POINT.test(input)) return INVALID_HOST;
            result = parseIPv4(input);
            if (result === null) return INVALID_HOST;
            if (FORBIDDEN_HOST_CODE_POINT.test(input)) return INVALID_HOST;
            result = parseIPv4(input);
            if (result === null) return INVALID_HOST;


@@ -5168,7 +5405,7 @@
          return ipv4;
        };
 
          return ipv4;
        };
 

-       // eslint-disable-next-line max-statements
+       // eslint-disable-next-line max-statements -- TODO

        var parseIPv6 = function (input) {
          var address = [0, 0, 0, 0, 0, 0, 0, 0];
          var pieceIndex = 0;
        var parseIPv6 = function (input) {
          var address = [0, 0, 0, 0, 0, 0, 0, 0];
          var pieceIndex = 0;


@@ -5278,7 +5515,7 @@
            result = [];
            for (index = 0; index < 4; index++) {
              result.unshift(host % 256);
            result = [];
            for (index = 0; index < 4; index++) {
              result.unshift(host % 256);

-             host = floor$5(host / 256);
+             host = floor$2(host / 256);

            } return result.join('.');
          // ipv6
          } else if (typeof host == 'object') {
            } return result.join('.');
          // ipv6
          } else if (typeof host == 'object') {


@@ -5300,19 +5537,19 @@
        };
 
        var C0ControlPercentEncodeSet = {};
        };
 
        var C0ControlPercentEncodeSet = {};

-       var fragmentPercentEncodeSet = objectAssign({}, C0ControlPercentEncodeSet, {
+       var fragmentPercentEncodeSet = assign$2({}, C0ControlPercentEncodeSet, {

          ' ': 1, '"': 1, '<': 1, '>': 1, '`': 1
        });
          ' ': 1, '"': 1, '<': 1, '>': 1, '`': 1
        });

-       var pathPercentEncodeSet = objectAssign({}, fragmentPercentEncodeSet, {
+       var pathPercentEncodeSet = assign$2({}, fragmentPercentEncodeSet, {

          '#': 1, '?': 1, '{': 1, '}': 1
        });
          '#': 1, '?': 1, '{': 1, '}': 1
        });

-       var userinfoPercentEncodeSet = objectAssign({}, pathPercentEncodeSet, {
+       var userinfoPercentEncodeSet = assign$2({}, pathPercentEncodeSet, {

          '/': 1, ':': 1, ';': 1, '=': 1, '@': 1, '[': 1, '\\': 1, ']': 1, '^': 1, '|': 1
        });
 
        var percentEncode = function (char, set) {
          var code = codeAt(char, 0);
          '/': 1, ':': 1, ';': 1, '=': 1, '@': 1, '[': 1, '\\': 1, ']': 1, '^': 1, '|': 1
        });
 
        var percentEncode = function (char, set) {
          var code = codeAt(char, 0);

-         return code > 0x20 && code < 0x7F && !has(set, char) ? char : encodeURIComponent(char);
+         return code > 0x20 && code < 0x7F && !has$4(set, char) ? char : encodeURIComponent(char);

        };
 
        var specialSchemes = {
        };
 
        var specialSchemes = {


@@ -5325,7 +5562,7 @@
        };
 
        var isSpecial = function (url) {
        };
 
        var isSpecial = function (url) {

-         return has(specialSchemes, url.scheme);
+         return has$4(specialSchemes, url.scheme);

        };
 
        var includesCredentials = function (url) {
        };
 
        var includesCredentials = function (url) {


@@ -5390,7 +5627,7 @@
        var QUERY = {};
        var FRAGMENT = {};
 
        var QUERY = {};
        var FRAGMENT = {};
 

-       // eslint-disable-next-line max-statements
+       // eslint-disable-next-line max-statements -- TODO

        var parseURL = function (url, input, stateOverride, base) {
          var state = stateOverride || SCHEME_START;
          var pointer = 0;
        var parseURL = function (url, input, stateOverride, base) {
          var state = stateOverride || SCHEME_START;
          var pointer = 0;


@@ -5435,7 +5672,7 @@
                  buffer += char.toLowerCase();
                } else if (char == ':') {
                  if (stateOverride && (
                  buffer += char.toLowerCase();
                } else if (char == ':') {
                  if (stateOverride && (

-                   (isSpecial(url) != has(specialSchemes, buffer)) ||
+                   (isSpecial(url) != has$4(specialSchemes, buffer)) ||

                    (buffer == 'file' && (includesCredentials(url) || url.port !== null)) ||
                    (url.scheme == 'file' && !url.host)
                  )) return;
                    (buffer == 'file' && (includesCredentials(url) || url.port !== null)) ||
                    (url.scheme == 'file' && !url.host)
                  )) return;


@@ -5792,10 +6029,10 @@
        // `URL` constructor
        // https://url.spec.whatwg.org/#url-class
        var URLConstructor = function URL(url /* , base */) {
        // `URL` constructor
        // https://url.spec.whatwg.org/#url-class
        var URLConstructor = function URL(url /* , base */) {

-         var that = anInstance(this, URLConstructor, 'URL');
+         var that = anInstance$2(this, URLConstructor, 'URL');

          var base = arguments.length > 1 ? arguments[1] : undefined;
          var urlString = String(url);
          var base = arguments.length > 1 ? arguments[1] : undefined;
          var urlString = String(url);

-         var state = setInternalState$6(that, { type: 'URL' });
+         var state = setInternalState$1(that, { type: 'URL' });

          var baseState, failure;
          if (base !== undefined) {
            if (base instanceof URLConstructor) baseState = getInternalURLState(base);
          var baseState, failure;
          if (base !== undefined) {
            if (base instanceof URLConstructor) baseState = getInternalURLState(base);


@@ -5812,7 +6049,7 @@
          searchParamsState.updateURL = function () {
            state.query = String(searchParams) || null;
          };
          searchParamsState.updateURL = function () {
            state.query = String(searchParams) || null;
          };

-         if (!descriptors) {
+         if (!DESCRIPTORS$a) {

            that.href = serializeURL.call(that);
            that.origin = getOrigin.call(that);
            that.protocol = getProtocol.call(that);
            that.href = serializeURL.call(that);
            that.origin = getOrigin.call(that);
            that.protocol = getProtocol.call(that);


@@ -5860,7 +6097,7 @@
          var scheme = url.scheme;
          var port = url.port;
          if (scheme == 'blob') try {
          var scheme = url.scheme;
          var port = url.port;
          if (scheme == 'blob') try {

-           return new URL(scheme.path[0]).origin;
+           return new URLConstructor(scheme.path[0]).origin;

          } catch (error) {
            return 'null';
          }
          } catch (error) {
            return 'null';
          }


@@ -5923,8 +6160,8 @@
          return { get: getter, set: setter, configurable: true, enumerable: true };
        };
 
          return { get: getter, set: setter, configurable: true, enumerable: true };
        };
 

-       if (descriptors) {
-         objectDefineProperties(URLPrototype, {
+       if (DESCRIPTORS$a) {
+         defineProperties$1(URLPrototype, {

            // `URL.prototype.href` accessors pair
            // https://url.spec.whatwg.org/#dom-url-href
            href: accessorDescriptor(serializeURL, function (href) {
            // `URL.prototype.href` accessors pair
            // https://url.spec.whatwg.org/#dom-url-href
            href: accessorDescriptor(serializeURL, function (href) {


@@ -6031,13 +6268,13 @@
 
        // `URL.prototype.toJSON` method
        // https://url.spec.whatwg.org/#dom-url-tojson
 
        // `URL.prototype.toJSON` method
        // https://url.spec.whatwg.org/#dom-url-tojson

-       redefine(URLPrototype, 'toJSON', function toJSON() {
+       redefine$6(URLPrototype, 'toJSON', function toJSON() {

          return serializeURL.call(this);
        }, { enumerable: true });
 
        // `URL.prototype.toString` method
        // https://url.spec.whatwg.org/#URL-stringification-behavior
          return serializeURL.call(this);
        }, { enumerable: true });
 
        // `URL.prototype.toString` method
        // https://url.spec.whatwg.org/#URL-stringification-behavior

-       redefine(URLPrototype, 'toString', function toString() {
+       redefine$6(URLPrototype, 'toString', function toString() {

          return serializeURL.call(this);
        }, { enumerable: true });
 
          return serializeURL.call(this);
        }, { enumerable: true });
 


@@ -6046,413 +6283,979 @@
          var nativeRevokeObjectURL = NativeURL.revokeObjectURL;
          // `URL.createObjectURL` method
          // https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
          var nativeRevokeObjectURL = NativeURL.revokeObjectURL;
          // `URL.createObjectURL` method
          // https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL

-         // eslint-disable-next-line no-unused-vars
-         if (nativeCreateObjectURL) redefine(URLConstructor, 'createObjectURL', function createObjectURL(blob) {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         if (nativeCreateObjectURL) redefine$6(URLConstructor, 'createObjectURL', function createObjectURL(blob) {

            return nativeCreateObjectURL.apply(NativeURL, arguments);
          });
          // `URL.revokeObjectURL` method
          // https://developer.mozilla.org/en-US/docs/Web/API/URL/revokeObjectURL
            return nativeCreateObjectURL.apply(NativeURL, arguments);
          });
          // `URL.revokeObjectURL` method
          // https://developer.mozilla.org/en-US/docs/Web/API/URL/revokeObjectURL

-         // eslint-disable-next-line no-unused-vars
-         if (nativeRevokeObjectURL) redefine(URLConstructor, 'revokeObjectURL', function revokeObjectURL(url) {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         if (nativeRevokeObjectURL) redefine$6(URLConstructor, 'revokeObjectURL', function revokeObjectURL(url) {

            return nativeRevokeObjectURL.apply(NativeURL, arguments);
          });
        }
 
            return nativeRevokeObjectURL.apply(NativeURL, arguments);
          });
        }
 

-       setToStringTag(URLConstructor, 'URL');
+       setToStringTag$3(URLConstructor, 'URL');

 
 

-       _export({ global: true, forced: !nativeUrl, sham: !descriptors }, {
+       $$Q({ global: true, forced: !USE_NATIVE_URL, sham: !DESCRIPTORS$a }, {

          URL: URLConstructor
        });
 
          URL: URLConstructor
        });
 

-       function _typeof(obj) {
-         "@babel/helpers - typeof";
+       var anObject$7 = anObject$m;

 
 

-         if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
-           _typeof = function (obj) {
-             return typeof obj;
-           };
-         } else {
-           _typeof = function (obj) {
-             return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
-           };
-         }
+       // `RegExp.prototype.flags` getter implementation
+       // https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
+       var regexpFlags$1 = function () {
+         var that = anObject$7(this);
+         var result = '';
+         if (that.global) result += 'g';
+         if (that.ignoreCase) result += 'i';
+         if (that.multiline) result += 'm';
+         if (that.dotAll) result += 's';
+         if (that.unicode) result += 'u';
+         if (that.sticky) result += 'y';
+         return result;
+       };

 
 

-         return _typeof(obj);
-       }
+       var redefine$5 = redefine$g.exports;
+       var anObject$6 = anObject$m;
+       var fails$q = fails$N;
+       var flags = regexpFlags$1;

 
 

-       function _classCallCheck(instance, Constructor) {
-         if (!(instance instanceof Constructor)) {
-           throw new TypeError("Cannot call a class as a function");
-         }
-       }
+       var TO_STRING = 'toString';
+       var RegExpPrototype$2 = RegExp.prototype;
+       var nativeToString = RegExpPrototype$2[TO_STRING];

 
 

-       function _defineProperties(target, props) {
-         for (var i = 0; i < props.length; i++) {
-           var descriptor = props[i];
-           descriptor.enumerable = descriptor.enumerable || false;
-           descriptor.configurable = true;
-           if ("value" in descriptor) descriptor.writable = true;
-           Object.defineProperty(target, descriptor.key, descriptor);
-         }
-       }
+       var NOT_GENERIC = fails$q(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
+       // FF44- RegExp#toString has a wrong name
+       var INCORRECT_NAME = nativeToString.name != TO_STRING;

 
 

-       function _createClass(Constructor, protoProps, staticProps) {
-         if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-         if (staticProps) _defineProperties(Constructor, staticProps);
-         return Constructor;
+       // `RegExp.prototype.toString` method
+       // https://tc39.es/ecma262/#sec-regexp.prototype.tostring
+       if (NOT_GENERIC || INCORRECT_NAME) {
+         redefine$5(RegExp.prototype, TO_STRING, function toString() {
+           var R = anObject$6(this);
+           var p = String(R.source);
+           var rf = R.flags;
+           var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype$2) ? flags.call(R) : rf);
+           return '/' + p + '/' + f;
+         }, { unsafe: true });

        }
 
        }
 

-       function _defineProperty(obj, key, value) {
-         if (key in obj) {
-           Object.defineProperty(obj, key, {
-             value: value,
-             enumerable: true,
-             configurable: true,
-             writable: true
-           });
-         } else {
-           obj[key] = value;
-         }
+       var regexpStickyHelpers = {};

 
 

-         return obj;
-       }
+       var fails$p = fails$N;

 
 

-       function _slicedToArray(arr, i) {
-         return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
-       }
+       // babel-minify transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError,
+       var RE = function (s, f) {
+         return RegExp(s, f);
+       };

 
 

-       function _toConsumableArray(arr) {
-         return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
-       }
+       regexpStickyHelpers.UNSUPPORTED_Y = fails$p(function () {
+         var re = RE('a', 'y');
+         re.lastIndex = 2;
+         return re.exec('abcd') != null;
+       });

 
 

-       function _arrayWithoutHoles(arr) {
-         if (Array.isArray(arr)) return _arrayLikeToArray(arr);
-       }
+       regexpStickyHelpers.BROKEN_CARET = fails$p(function () {
+         // https://bugzilla.mozilla.org/show_bug.cgi?id=773687
+         var re = RE('^r', 'gy');
+         re.lastIndex = 2;
+         return re.exec('str') != null;
+       });

 
 

-       function _arrayWithHoles(arr) {
-         if (Array.isArray(arr)) return arr;
-       }
+       var fails$o = fails$N;

 
 

-       function _iterableToArray(iter) {
-         if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter);
-       }
+       var regexpUnsupportedDotAll = fails$o(function () {
+         // babel-minify transpiles RegExp('.', 's') -> /./s and it causes SyntaxError
+         var re = RegExp('.', (typeof '').charAt(0));
+         return !(re.dotAll && re.exec('\n') && re.flags === 's');
+       });

 
 

-       function _iterableToArrayLimit(arr, i) {
-         if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return;
-         var _arr = [];
-         var _n = true;
-         var _d = false;
-         var _e = undefined;
+       var fails$n = fails$N;

 
 

-         try {
-           for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
-             _arr.push(_s.value);
+       var regexpUnsupportedNcg = fails$n(function () {
+         // babel-minify transpiles RegExp('.', 'g') -> /./g and it causes SyntaxError
+         var re = RegExp('(?<a>b)', (typeof '').charAt(5));
+         return re.exec('b').groups.a !== 'b' ||
+           'b'.replace(re, '$<a>c') !== 'bc';
+       });

 
 

-             if (i && _arr.length === i) break;
-           }
-         } catch (err) {
-           _d = true;
-           _e = err;
-         } finally {
-           try {
-             if (!_n && _i["return"] != null) _i["return"]();
-           } finally {
-             if (_d) throw _e;
-           }
-         }
+       /* eslint-disable regexp/no-assertion-capturing-group, regexp/no-empty-group, regexp/no-lazy-ends -- testing */
+       /* eslint-disable regexp/no-useless-quantifier -- testing */
+       var regexpFlags = regexpFlags$1;
+       var stickyHelpers$2 = regexpStickyHelpers;
+       var shared = shared$5.exports;
+       var create$7 = objectCreate;
+       var getInternalState = internalState.get;
+       var UNSUPPORTED_DOT_ALL$1 = regexpUnsupportedDotAll;
+       var UNSUPPORTED_NCG$1 = regexpUnsupportedNcg;

 
 

-         return _arr;
-       }
+       var nativeExec = RegExp.prototype.exec;
+       var nativeReplace = shared('native-string-replace', String.prototype.replace);

 
 

-       function _unsupportedIterableToArray(o, minLen) {
-         if (!o) return;
-         if (typeof o === "string") return _arrayLikeToArray(o, minLen);
-         var n = Object.prototype.toString.call(o).slice(8, -1);
-         if (n === "Object" && o.constructor) n = o.constructor.name;
-         if (n === "Map" || n === "Set") return Array.from(o);
-         if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
-       }
+       var patchedExec = nativeExec;

 
 

-       function _arrayLikeToArray(arr, len) {
-         if (len == null || len > arr.length) len = arr.length;
+       var UPDATES_LAST_INDEX_WRONG = (function () {
+         var re1 = /a/;
+         var re2 = /b*/g;
+         nativeExec.call(re1, 'a');
+         nativeExec.call(re2, 'a');
+         return re1.lastIndex !== 0 || re2.lastIndex !== 0;
+       })();

 
 

-         for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+       var UNSUPPORTED_Y$2 = stickyHelpers$2.UNSUPPORTED_Y || stickyHelpers$2.BROKEN_CARET;

 
 

-         return arr2;
-       }
+       // nonparticipating capturing group, copied from es5-shim's String#split patch.
+       var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;

 
 

-       function _nonIterableSpread() {
-         throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
-       }
+       var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y$2 || UNSUPPORTED_DOT_ALL$1 || UNSUPPORTED_NCG$1;

 
 

-       function _nonIterableRest() {
-         throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
-       }
+       if (PATCH) {
+         // eslint-disable-next-line max-statements -- TODO
+         patchedExec = function exec(str) {
+           var re = this;
+           var state = getInternalState(re);
+           var raw = state.raw;
+           var result, reCopy, lastIndex, match, i, object, group;
+
+           if (raw) {
+             raw.lastIndex = re.lastIndex;
+             result = patchedExec.call(raw, str);
+             re.lastIndex = raw.lastIndex;
+             return result;
+           }

 
 

-       function _createForOfIteratorHelper(o, allowArrayLike) {
-         var it;
+           var groups = state.groups;
+           var sticky = UNSUPPORTED_Y$2 && re.sticky;
+           var flags = regexpFlags.call(re);
+           var source = re.source;
+           var charsAdded = 0;
+           var strCopy = str;

 
 

-         if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
-           if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
-             if (it) o = it;
-             var i = 0;
+           if (sticky) {
+             flags = flags.replace('y', '');
+             if (flags.indexOf('g') === -1) {
+               flags += 'g';
+             }

 
 

-             var F = function () {};
+             strCopy = String(str).slice(re.lastIndex);
+             // Support anchored sticky behavior.
+             if (re.lastIndex > 0 && (!re.multiline || re.multiline && str[re.lastIndex - 1] !== '\n')) {
+               source = '(?: ' + source + ')';
+               strCopy = ' ' + strCopy;
+               charsAdded++;
+             }
+             // ^(? + rx + ) is needed, in combination with some str slicing, to
+             // simulate the 'y' flag.
+             reCopy = new RegExp('^(?:' + source + ')', flags);
+           }

 
 

-             return {
-               s: F,
-               n: function () {
-                 if (i >= o.length) return {
-                   done: true
-                 };
-                 return {
-                   done: false,
-                   value: o[i++]
-                 };
-               },
-               e: function (e) {
-                 throw e;
-               },
-               f: F
-             };
+           if (NPCG_INCLUDED) {
+             reCopy = new RegExp('^' + source + '$(?!\\s)', flags);

            }
            }

+           if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;

 
 

-           throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
-         }
+           match = nativeExec.call(sticky ? reCopy : re, strCopy);

 
 

-         var normalCompletion = true,
-             didErr = false,
-             err;
-         return {
-           s: function () {
-             it = o[Symbol.iterator]();
-           },
-           n: function () {
-             var step = it.next();
-             normalCompletion = step.done;
-             return step;
-           },
-           e: function (e) {
-             didErr = true;
-             err = e;
-           },
-           f: function () {
-             try {
-               if (!normalCompletion && it.return != null) it.return();
-             } finally {
-               if (didErr) throw err;
-             }
+           if (sticky) {
+             if (match) {
+               match.input = match.input.slice(charsAdded);
+               match[0] = match[0].slice(charsAdded);
+               match.index = re.lastIndex;
+               re.lastIndex += match[0].length;
+             } else re.lastIndex = 0;
+           } else if (UPDATES_LAST_INDEX_WRONG && match) {
+             re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
+           }
+           if (NPCG_INCLUDED && match && match.length > 1) {
+             // Fix browsers whose `exec` methods don't consistently return `undefined`
+             // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
+             nativeReplace.call(match[0], reCopy, function () {
+               for (i = 1; i < arguments.length - 2; i++) {
+                 if (arguments[i] === undefined) match[i] = undefined;
+               }
+             });

            }
            }

-         };
-       }

 
 

-       var global$1 = typeof globalThis !== 'undefined' && globalThis || typeof self !== 'undefined' && self || typeof global$1 !== 'undefined' && global$1;
-       var support = {
-         searchParams: 'URLSearchParams' in global$1,
-         iterable: 'Symbol' in global$1 && 'iterator' in Symbol,
-         blob: 'FileReader' in global$1 && 'Blob' in global$1 && function () {
-           try {
-             new Blob();
-             return true;
-           } catch (e) {
-             return false;
+           if (match && groups) {
+             match.groups = object = create$7(null);
+             for (i = 0; i < groups.length; i++) {
+               group = groups[i];
+               object[group[0]] = match[group[1]];
+             }

            }
            }

-         }(),
-         formData: 'FormData' in global$1,
-         arrayBuffer: 'ArrayBuffer' in global$1
-       };

 
 

-       function isDataView(obj) {
-         return obj && DataView.prototype.isPrototypeOf(obj);
+           return match;
+         };

        }
 
        }
 

-       if (support.arrayBuffer) {
-         var viewClasses = ['[object Int8Array]', '[object Uint8Array]', '[object Uint8ClampedArray]', '[object Int16Array]', '[object Uint16Array]', '[object Int32Array]', '[object Uint32Array]', '[object Float32Array]', '[object Float64Array]'];
+       var regexpExec$3 = patchedExec;

 
 

-         var isArrayBufferView = ArrayBuffer.isView || function (obj) {
-           return obj && viewClasses.indexOf(Object.prototype.toString.call(obj)) > -1;
-         };
-       }
+       var $$P = _export;
+       var exec = regexpExec$3;

 
 

-       function normalizeName(name) {
-         if (typeof name !== 'string') {
-           name = String(name);
-         }
+       // `RegExp.prototype.exec` method
+       // https://tc39.es/ecma262/#sec-regexp.prototype.exec
+       $$P({ target: 'RegExp', proto: true, forced: /./.exec !== exec }, {
+         exec: exec
+       });

 
 

-         if (/[^a-z0-9\-#$%&'*+.^_`|~!]/i.test(name) || name === '') {
-           throw new TypeError('Invalid character in header field name');
-         }
+       // TODO: Remove from `core-js@4` since it's moved to entry points

 
 

-         return name.toLowerCase();
-       }
+       var redefine$4 = redefine$g.exports;
+       var regexpExec$2 = regexpExec$3;
+       var fails$m = fails$N;
+       var wellKnownSymbol$5 = wellKnownSymbol$s;
+       var createNonEnumerableProperty$1 = createNonEnumerableProperty$e;

 
 

-       function normalizeValue(value) {
-         if (typeof value !== 'string') {
-           value = String(value);
-         }
+       var SPECIES = wellKnownSymbol$5('species');
+       var RegExpPrototype$1 = RegExp.prototype;

 
 

-         return value;
-       } // Build a destructive iterator for the value list
+       var fixRegexpWellKnownSymbolLogic = function (KEY, exec, FORCED, SHAM) {
+         var SYMBOL = wellKnownSymbol$5(KEY);
+
+         var DELEGATES_TO_SYMBOL = !fails$m(function () {
+           // String methods call symbol-named RegEp methods
+           var O = {};
+           O[SYMBOL] = function () { return 7; };
+           return ''[KEY](O) != 7;
+         });

 
 

+         var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails$m(function () {
+           // Symbol-named RegExp methods call .exec
+           var execCalled = false;
+           var re = /a/;

 
 

-       function iteratorFor(items) {
-         var iterator = {
-           next: function next() {
-             var value = items.shift();
-             return {
-               done: value === undefined,
-               value: value
-             };
+           if (KEY === 'split') {
+             // We can't use real regex here since it causes deoptimization
+             // and serious performance degradation in V8
+             // https://github.com/zloirock/core-js/issues/306
+             re = {};
+             // RegExp[@@split] doesn't call the regex's exec method, but first creates
+             // a new one. We need to return the patched regex when creating the new one.
+             re.constructor = {};
+             re.constructor[SPECIES] = function () { return re; };
+             re.flags = '';
+             re[SYMBOL] = /./[SYMBOL];

            }
            }

-         };

 
 

-         if (support.iterable) {
-           iterator[Symbol.iterator] = function () {
-             return iterator;
-           };
-         }
+           re.exec = function () { execCalled = true; return null; };

 
 

-         return iterator;
-       }
+           re[SYMBOL]('');
+           return !execCalled;
+         });

 
 

-       function Headers$1(headers) {
-         this.map = {};
+         if (
+           !DELEGATES_TO_SYMBOL ||
+           !DELEGATES_TO_EXEC ||
+           FORCED
+         ) {
+           var nativeRegExpMethod = /./[SYMBOL];
+           var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
+             var $exec = regexp.exec;
+             if ($exec === regexpExec$2 || $exec === RegExpPrototype$1.exec) {
+               if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
+                 // The native String method already delegates to @@method (this
+                 // polyfilled function), leasing to infinite recursion.
+                 // We avoid it by directly calling the native @@method method.
+                 return { done: true, value: nativeRegExpMethod.call(regexp, str, arg2) };
+               }
+               return { done: true, value: nativeMethod.call(str, regexp, arg2) };
+             }
+             return { done: false };
+           });

 
 

-         if (headers instanceof Headers$1) {
-           headers.forEach(function (value, name) {
-             this.append(name, value);
-           }, this);
-         } else if (Array.isArray(headers)) {
-           headers.forEach(function (header) {
-             this.append(header[0], header[1]);
-           }, this);
-         } else if (headers) {
-           Object.getOwnPropertyNames(headers).forEach(function (name) {
-             this.append(name, headers[name]);
-           }, this);
+           redefine$4(String.prototype, KEY, methods[0]);
+           redefine$4(RegExpPrototype$1, SYMBOL, methods[1]);

          }
          }

-       }

 
 

-       Headers$1.prototype.append = function (name, value) {
-         name = normalizeName(name);
-         value = normalizeValue(value);
-         var oldValue = this.map[name];
-         this.map[name] = oldValue ? oldValue + ', ' + value : value;
+         if (SHAM) createNonEnumerableProperty$1(RegExpPrototype$1[SYMBOL], 'sham', true);

        };
 
        };
 

-       Headers$1.prototype['delete'] = function (name) {
-         delete this.map[normalizeName(name)];
-       };
+       var charAt = stringMultibyte.charAt;

 
 

-       Headers$1.prototype.get = function (name) {
-         name = normalizeName(name);
-         return this.has(name) ? this.map[name] : null;
+       // `AdvanceStringIndex` abstract operation
+       // https://tc39.es/ecma262/#sec-advancestringindex
+       var advanceStringIndex$3 = function (S, index, unicode) {
+         return index + (unicode ? charAt(S, index).length : 1);

        };
 
        };
 

-       Headers$1.prototype.has = function (name) {
-         return this.map.hasOwnProperty(normalizeName(name));
-       };
+       var toObject$6 = toObject$i;

 
 

-       Headers$1.prototype.set = function (name, value) {
-         this.map[normalizeName(name)] = normalizeValue(value);
+       var floor$1 = Math.floor;
+       var replace = ''.replace;
+       var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d{1,2}|<[^>]*>)/g;
+       var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d{1,2})/g;
+
+       // `GetSubstitution` abstract operation
+       // https://tc39.es/ecma262/#sec-getsubstitution
+       var getSubstitution$1 = function (matched, str, position, captures, namedCaptures, replacement) {
+         var tailPos = position + matched.length;
+         var m = captures.length;
+         var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
+         if (namedCaptures !== undefined) {
+           namedCaptures = toObject$6(namedCaptures);
+           symbols = SUBSTITUTION_SYMBOLS;
+         }
+         return replace.call(replacement, symbols, function (match, ch) {
+           var capture;
+           switch (ch.charAt(0)) {
+             case '$': return '$';
+             case '&': return matched;
+             case '`': return str.slice(0, position);
+             case "'": return str.slice(tailPos);
+             case '<':
+               capture = namedCaptures[ch.slice(1, -1)];
+               break;
+             default: // \d\d?
+               var n = +ch;
+               if (n === 0) return match;
+               if (n > m) {
+                 var f = floor$1(n / 10);
+                 if (f === 0) return match;
+                 if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);
+                 return match;
+               }
+               capture = captures[n - 1];
+           }
+           return capture === undefined ? '' : capture;
+         });

        };
 
        };
 

-       Headers$1.prototype.forEach = function (callback, thisArg) {
-         for (var name in this.map) {
-           if (this.map.hasOwnProperty(name)) {
-             callback.call(thisArg, this.map[name], name, this);
+       var classof$3 = classofRaw$1;
+       var regexpExec$1 = regexpExec$3;
+
+       // `RegExpExec` abstract operation
+       // https://tc39.es/ecma262/#sec-regexpexec
+       var regexpExecAbstract = function (R, S) {
+         var exec = R.exec;
+         if (typeof exec === 'function') {
+           var result = exec.call(R, S);
+           if (typeof result !== 'object') {
+             throw TypeError('RegExp exec method returned something other than an Object or null');

            }
            }

+           return result;

          }
          }

-       };

 
 

-       Headers$1.prototype.keys = function () {
-         var items = [];
-         this.forEach(function (value, name) {
-           items.push(name);
-         });
-         return iteratorFor(items);
-       };
+         if (classof$3(R) !== 'RegExp') {
+           throw TypeError('RegExp#exec called on incompatible receiver');
+         }

 
 

-       Headers$1.prototype.values = function () {
-         var items = [];
-         this.forEach(function (value) {
-           items.push(value);
-         });
-         return iteratorFor(items);
+         return regexpExec$1.call(R, S);

        };
 
        };
 

-       Headers$1.prototype.entries = function () {
-         var items = [];
-         this.forEach(function (value, name) {
-           items.push([name, value]);
-         });
-         return iteratorFor(items);
+       var fixRegExpWellKnownSymbolLogic$3 = fixRegexpWellKnownSymbolLogic;
+       var fails$l = fails$N;
+       var anObject$5 = anObject$m;
+       var toLength$8 = toLength$q;
+       var toInteger$3 = toInteger$b;
+       var requireObjectCoercible$a = requireObjectCoercible$e;
+       var advanceStringIndex$2 = advanceStringIndex$3;
+       var getSubstitution = getSubstitution$1;
+       var regExpExec$2 = regexpExecAbstract;
+       var wellKnownSymbol$4 = wellKnownSymbol$s;
+
+       var REPLACE = wellKnownSymbol$4('replace');
+       var max$2 = Math.max;
+       var min$5 = Math.min;
+
+       var maybeToString = function (it) {
+         return it === undefined ? it : String(it);

        };
 
        };
 

-       if (support.iterable) {
-         Headers$1.prototype[Symbol.iterator] = Headers$1.prototype.entries;
-       }
+       // IE <= 11 replaces $0 with the whole match, as if it was $&
+       // https://stackoverflow.com/questions/6024666/getting-ie-to-replace-a-regex-with-the-literal-string-0
+       var REPLACE_KEEPS_$0 = (function () {
+         // eslint-disable-next-line regexp/prefer-escape-replacement-dollar-char -- required for testing
+         return 'a'.replace(/./, '$0') === '$0';
+       })();

 
 

-       function consumed(body) {
-         if (body.bodyUsed) {
-           return Promise.reject(new TypeError('Already read'));
+       // Safari <= 13.0.3(?) substitutes nth capture where n>m with an empty string
+       var REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE = (function () {
+         if (/./[REPLACE]) {
+           return /./[REPLACE]('a', '$0') === '';

          }
          }

+         return false;
+       })();

 
 

-         body.bodyUsed = true;
-       }
-
-       function fileReaderReady(reader) {
-         return new Promise(function (resolve, reject) {
-           reader.onload = function () {
-             resolve(reader.result);
-           };
+       var REPLACE_SUPPORTS_NAMED_GROUPS = !fails$l(function () {
+         var re = /./;
+         re.exec = function () {
+           var result = [];
+           result.groups = { a: '7' };
+           return result;
+         };
+         return ''.replace(re, '$<a>') !== '7';
+       });

 
 

-           reader.onerror = function () {
-             reject(reader.error);
-           };
-         });
-       }
+       // @@replace logic
+       fixRegExpWellKnownSymbolLogic$3('replace', function (_, nativeReplace, maybeCallNative) {
+         var UNSAFE_SUBSTITUTE = REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE ? '$' : '$0';

 
 

-       function readBlobAsArrayBuffer(blob) {
-         var reader = new FileReader();
-         var promise = fileReaderReady(reader);
-         reader.readAsArrayBuffer(blob);
-         return promise;
-       }
+         return [
+           // `String.prototype.replace` method
+           // https://tc39.es/ecma262/#sec-string.prototype.replace
+           function replace(searchValue, replaceValue) {
+             var O = requireObjectCoercible$a(this);
+             var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
+             return replacer !== undefined
+               ? replacer.call(searchValue, O, replaceValue)
+               : nativeReplace.call(String(O), searchValue, replaceValue);
+           },
+           // `RegExp.prototype[@@replace]` method
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@replace
+           function (string, replaceValue) {
+             if (
+               typeof replaceValue === 'string' &&
+               replaceValue.indexOf(UNSAFE_SUBSTITUTE) === -1 &&
+               replaceValue.indexOf('$<') === -1
+             ) {
+               var res = maybeCallNative(nativeReplace, this, string, replaceValue);
+               if (res.done) return res.value;
+             }

 
 

-       function readBlobAsText(blob) {
-         var reader = new FileReader();
-         var promise = fileReaderReady(reader);
-         reader.readAsText(blob);
-         return promise;
-       }
+             var rx = anObject$5(this);
+             var S = String(string);

 
 

-       function readArrayBufferAsText(buf) {
-         var view = new Uint8Array(buf);
-         var chars = new Array(view.length);
+             var functionalReplace = typeof replaceValue === 'function';
+             if (!functionalReplace) replaceValue = String(replaceValue);

 
 

-         for (var i = 0; i < view.length; i++) {
-           chars[i] = String.fromCharCode(view[i]);
-         }
+             var global = rx.global;
+             if (global) {
+               var fullUnicode = rx.unicode;
+               rx.lastIndex = 0;
+             }
+             var results = [];
+             while (true) {
+               var result = regExpExec$2(rx, S);
+               if (result === null) break;

 
 

-         return chars.join('');
-       }
+               results.push(result);
+               if (!global) break;

 
 

-       function bufferClone(buf) {
-         if (buf.slice) {
-           return buf.slice(0);
-         } else {
-           var view = new Uint8Array(buf.byteLength);
-           view.set(new Uint8Array(buf));
-           return view.buffer;
-         }
-       }
+               var matchStr = String(result[0]);
+               if (matchStr === '') rx.lastIndex = advanceStringIndex$2(S, toLength$8(rx.lastIndex), fullUnicode);
+             }

 
 

-       function Body() {
-         this.bodyUsed = false;
+             var accumulatedResult = '';
+             var nextSourcePosition = 0;
+             for (var i = 0; i < results.length; i++) {
+               result = results[i];

 
 

-         this._initBody = function (body) {
-           /*
+               var matched = String(result[0]);
+               var position = max$2(min$5(toInteger$3(result.index), S.length), 0);
+               var captures = [];
+               // NOTE: This is equivalent to
+               //   captures = result.slice(1).map(maybeToString)
+               // but for some reason `nativeSlice.call(result, 1, result.length)` (called in
+               // the slice polyfill when slicing native arrays) "doesn't work" in safari 9 and
+               // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.
+               for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));
+               var namedCaptures = result.groups;
+               if (functionalReplace) {
+                 var replacerArgs = [matched].concat(captures, position, S);
+                 if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);
+                 var replacement = String(replaceValue.apply(undefined, replacerArgs));
+               } else {
+                 replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
+               }
+               if (position >= nextSourcePosition) {
+                 accumulatedResult += S.slice(nextSourcePosition, position) + replacement;
+                 nextSourcePosition = position + matched.length;
+               }
+             }
+             return accumulatedResult + S.slice(nextSourcePosition);
+           }
+         ];
+       }, !REPLACE_SUPPORTS_NAMED_GROUPS || !REPLACE_KEEPS_$0 || REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE);
+
+       var isObject$b = isObject$r;
+       var classof$2 = classofRaw$1;
+       var wellKnownSymbol$3 = wellKnownSymbol$s;
+
+       var MATCH$2 = wellKnownSymbol$3('match');
+
+       // `IsRegExp` abstract operation
+       // https://tc39.es/ecma262/#sec-isregexp
+       var isRegexp = function (it) {
+         var isRegExp;
+         return isObject$b(it) && ((isRegExp = it[MATCH$2]) !== undefined ? !!isRegExp : classof$2(it) == 'RegExp');
+       };
+
+       var fixRegExpWellKnownSymbolLogic$2 = fixRegexpWellKnownSymbolLogic;
+       var isRegExp$2 = isRegexp;
+       var anObject$4 = anObject$m;
+       var requireObjectCoercible$9 = requireObjectCoercible$e;
+       var speciesConstructor$1 = speciesConstructor$8;
+       var advanceStringIndex$1 = advanceStringIndex$3;
+       var toLength$7 = toLength$q;
+       var callRegExpExec = regexpExecAbstract;
+       var regexpExec = regexpExec$3;
+       var stickyHelpers$1 = regexpStickyHelpers;
+       var fails$k = fails$N;
+
+       var UNSUPPORTED_Y$1 = stickyHelpers$1.UNSUPPORTED_Y;
+       var arrayPush = [].push;
+       var min$4 = Math.min;
+       var MAX_UINT32 = 0xFFFFFFFF;
+
+       // Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
+       // Weex JS has frozen built-in prototypes, so use try / catch wrapper
+       var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails$k(function () {
+         // eslint-disable-next-line regexp/no-empty-group -- required for testing
+         var re = /(?:)/;
+         var originalExec = re.exec;
+         re.exec = function () { return originalExec.apply(this, arguments); };
+         var result = 'ab'.split(re);
+         return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
+       });
+
+       // @@split logic
+       fixRegExpWellKnownSymbolLogic$2('split', function (SPLIT, nativeSplit, maybeCallNative) {
+         var internalSplit;
+         if (
+           'abbc'.split(/(b)*/)[1] == 'c' ||
+           // eslint-disable-next-line regexp/no-empty-group -- required for testing
+           'test'.split(/(?:)/, -1).length != 4 ||
+           'ab'.split(/(?:ab)*/).length != 2 ||
+           '.'.split(/(.?)(.?)/).length != 4 ||
+           // eslint-disable-next-line regexp/no-assertion-capturing-group, regexp/no-empty-group -- required for testing
+           '.'.split(/()()/).length > 1 ||
+           ''.split(/.?/).length
+         ) {
+           // based on es5-shim implementation, need to rework it
+           internalSplit = function (separator, limit) {
+             var string = String(requireObjectCoercible$9(this));
+             var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
+             if (lim === 0) return [];
+             if (separator === undefined) return [string];
+             // If `separator` is not a regex, use native split
+             if (!isRegExp$2(separator)) {
+               return nativeSplit.call(string, separator, lim);
+             }
+             var output = [];
+             var flags = (separator.ignoreCase ? 'i' : '') +
+                         (separator.multiline ? 'm' : '') +
+                         (separator.unicode ? 'u' : '') +
+                         (separator.sticky ? 'y' : '');
+             var lastLastIndex = 0;
+             // Make `global` and avoid `lastIndex` issues by working with a copy
+             var separatorCopy = new RegExp(separator.source, flags + 'g');
+             var match, lastIndex, lastLength;
+             while (match = regexpExec.call(separatorCopy, string)) {
+               lastIndex = separatorCopy.lastIndex;
+               if (lastIndex > lastLastIndex) {
+                 output.push(string.slice(lastLastIndex, match.index));
+                 if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1));
+                 lastLength = match[0].length;
+                 lastLastIndex = lastIndex;
+                 if (output.length >= lim) break;
+               }
+               if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
+             }
+             if (lastLastIndex === string.length) {
+               if (lastLength || !separatorCopy.test('')) output.push('');
+             } else output.push(string.slice(lastLastIndex));
+             return output.length > lim ? output.slice(0, lim) : output;
+           };
+         // Chakra, V8
+         } else if ('0'.split(undefined, 0).length) {
+           internalSplit = function (separator, limit) {
+             return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit);
+           };
+         } else internalSplit = nativeSplit;
+
+         return [
+           // `String.prototype.split` method
+           // https://tc39.es/ecma262/#sec-string.prototype.split
+           function split(separator, limit) {
+             var O = requireObjectCoercible$9(this);
+             var splitter = separator == undefined ? undefined : separator[SPLIT];
+             return splitter !== undefined
+               ? splitter.call(separator, O, limit)
+               : internalSplit.call(String(O), separator, limit);
+           },
+           // `RegExp.prototype[@@split]` method
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@split
+           //
+           // NOTE: This cannot be properly polyfilled in engines that don't support
+           // the 'y' flag.
+           function (string, limit) {
+             var res = maybeCallNative(internalSplit, this, string, limit, internalSplit !== nativeSplit);
+             if (res.done) return res.value;
+
+             var rx = anObject$4(this);
+             var S = String(string);
+             var C = speciesConstructor$1(rx, RegExp);
+
+             var unicodeMatching = rx.unicode;
+             var flags = (rx.ignoreCase ? 'i' : '') +
+                         (rx.multiline ? 'm' : '') +
+                         (rx.unicode ? 'u' : '') +
+                         (UNSUPPORTED_Y$1 ? 'g' : 'y');
+
+             // ^(? + rx + ) is needed, in combination with some S slicing, to
+             // simulate the 'y' flag.
+             var splitter = new C(UNSUPPORTED_Y$1 ? '^(?:' + rx.source + ')' : rx, flags);
+             var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
+             if (lim === 0) return [];
+             if (S.length === 0) return callRegExpExec(splitter, S) === null ? [S] : [];
+             var p = 0;
+             var q = 0;
+             var A = [];
+             while (q < S.length) {
+               splitter.lastIndex = UNSUPPORTED_Y$1 ? 0 : q;
+               var z = callRegExpExec(splitter, UNSUPPORTED_Y$1 ? S.slice(q) : S);
+               var e;
+               if (
+                 z === null ||
+                 (e = min$4(toLength$7(splitter.lastIndex + (UNSUPPORTED_Y$1 ? q : 0)), S.length)) === p
+               ) {
+                 q = advanceStringIndex$1(S, q, unicodeMatching);
+               } else {
+                 A.push(S.slice(p, q));
+                 if (A.length === lim) return A;
+                 for (var i = 1; i <= z.length - 1; i++) {
+                   A.push(z[i]);
+                   if (A.length === lim) return A;
+                 }
+                 q = p = e;
+               }
+             }
+             A.push(S.slice(p));
+             return A;
+           }
+         ];
+       }, !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC, UNSUPPORTED_Y$1);
+
+       // a string of all valid unicode whitespaces
+       var whitespaces$4 = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002' +
+         '\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
+
+       var requireObjectCoercible$8 = requireObjectCoercible$e;
+       var whitespaces$3 = whitespaces$4;
+
+       var whitespace = '[' + whitespaces$3 + ']';
+       var ltrim = RegExp('^' + whitespace + whitespace + '*');
+       var rtrim$2 = RegExp(whitespace + whitespace + '*$');
+
+       // `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation
+       var createMethod$2 = function (TYPE) {
+         return function ($this) {
+           var string = String(requireObjectCoercible$8($this));
+           if (TYPE & 1) string = string.replace(ltrim, '');
+           if (TYPE & 2) string = string.replace(rtrim$2, '');
+           return string;
+         };
+       };
+
+       var stringTrim = {
+         // `String.prototype.{ trimLeft, trimStart }` methods
+         // https://tc39.es/ecma262/#sec-string.prototype.trimstart
+         start: createMethod$2(1),
+         // `String.prototype.{ trimRight, trimEnd }` methods
+         // https://tc39.es/ecma262/#sec-string.prototype.trimend
+         end: createMethod$2(2),
+         // `String.prototype.trim` method
+         // https://tc39.es/ecma262/#sec-string.prototype.trim
+         trim: createMethod$2(3)
+       };
+
+       var fails$j = fails$N;
+       var whitespaces$2 = whitespaces$4;
+
+       var non = '\u200B\u0085\u180E';
+
+       // check that a method works with the correct list
+       // of whitespaces and has a correct name
+       var stringTrimForced = function (METHOD_NAME) {
+         return fails$j(function () {
+           return !!whitespaces$2[METHOD_NAME]() || non[METHOD_NAME]() != non || whitespaces$2[METHOD_NAME].name !== METHOD_NAME;
+         });
+       };
+
+       var $$O = _export;
+       var $trim = stringTrim.trim;
+       var forcedStringTrimMethod = stringTrimForced;
+
+       // `String.prototype.trim` method
+       // https://tc39.es/ecma262/#sec-string.prototype.trim
+       $$O({ target: 'String', proto: true, forced: forcedStringTrimMethod('trim') }, {
+         trim: function trim() {
+           return $trim(this);
+         }
+       });
+
+       var DESCRIPTORS$9 = descriptors;
+       var defineProperty$4 = objectDefineProperty.f;
+
+       var FunctionPrototype = Function.prototype;
+       var FunctionPrototypeToString = FunctionPrototype.toString;
+       var nameRE = /^\s*function ([^ (]*)/;
+       var NAME = 'name';
+
+       // Function instances `.name` property
+       // https://tc39.es/ecma262/#sec-function-instances-name
+       if (DESCRIPTORS$9 && !(NAME in FunctionPrototype)) {
+         defineProperty$4(FunctionPrototype, NAME, {
+           configurable: true,
+           get: function () {
+             try {
+               return FunctionPrototypeToString.call(this).match(nameRE)[1];
+             } catch (error) {
+               return '';
+             }
+           }
+         });
+       }
+
+       var $$N = _export;
+       var DESCRIPTORS$8 = descriptors;
+       var create$6 = objectCreate;
+
+       // `Object.create` method
+       // https://tc39.es/ecma262/#sec-object.create
+       $$N({ target: 'Object', stat: true, sham: !DESCRIPTORS$8 }, {
+         create: create$6
+       });
+
+       var $$M = _export;
+       var global$9 = global$F;
+       var userAgent = engineUserAgent;
+
+       var slice$3 = [].slice;
+       var MSIE = /MSIE .\./.test(userAgent); // <- dirty ie9- check
+
+       var wrap$1 = function (scheduler) {
+         return function (handler, timeout /* , ...arguments */) {
+           var boundArgs = arguments.length > 2;
+           var args = boundArgs ? slice$3.call(arguments, 2) : undefined;
+           return scheduler(boundArgs ? function () {
+             // eslint-disable-next-line no-new-func -- spec requirement
+             (typeof handler == 'function' ? handler : Function(handler)).apply(this, args);
+           } : handler, timeout);
+         };
+       };
+
+       // ie9- setTimeout & setInterval additional parameters fix
+       // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#timers
+       $$M({ global: true, bind: true, forced: MSIE }, {
+         // `setTimeout` method
+         // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-settimeout
+         setTimeout: wrap$1(global$9.setTimeout),
+         // `setInterval` method
+         // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-setinterval
+         setInterval: wrap$1(global$9.setInterval)
+       });
+
+       var global$8 = typeof globalThis !== 'undefined' && globalThis || typeof self !== 'undefined' && self || typeof global$8 !== 'undefined' && global$8;
+       var support = {
+         searchParams: 'URLSearchParams' in global$8,
+         iterable: 'Symbol' in global$8 && 'iterator' in Symbol,
+         blob: 'FileReader' in global$8 && 'Blob' in global$8 && function () {
+           try {
+             new Blob();
+             return true;
+           } catch (e) {
+             return false;
+           }
+         }(),
+         formData: 'FormData' in global$8,
+         arrayBuffer: 'ArrayBuffer' in global$8
+       };
+
+       function isDataView(obj) {
+         return obj && DataView.prototype.isPrototypeOf(obj);
+       }
+
+       if (support.arrayBuffer) {
+         var viewClasses = ['[object Int8Array]', '[object Uint8Array]', '[object Uint8ClampedArray]', '[object Int16Array]', '[object Uint16Array]', '[object Int32Array]', '[object Uint32Array]', '[object Float32Array]', '[object Float64Array]'];
+
+         var isArrayBufferView = ArrayBuffer.isView || function (obj) {
+           return obj && viewClasses.indexOf(Object.prototype.toString.call(obj)) > -1;
+         };
+       }
+
+       function normalizeName(name) {
+         if (typeof name !== 'string') {
+           name = String(name);
+         }
+
+         if (/[^a-z0-9\-#$%&'*+.^_`|~!]/i.test(name) || name === '') {
+           throw new TypeError('Invalid character in header field name: "' + name + '"');
+         }
+
+         return name.toLowerCase();
+       }
+
+       function normalizeValue(value) {
+         if (typeof value !== 'string') {
+           value = String(value);
+         }
+
+         return value;
+       } // Build a destructive iterator for the value list
+
+
+       function iteratorFor(items) {
+         var iterator = {
+           next: function next() {
+             var value = items.shift();
+             return {
+               done: value === undefined,
+               value: value
+             };
+           }
+         };
+
+         if (support.iterable) {
+           iterator[Symbol.iterator] = function () {
+             return iterator;
+           };
+         }
+
+         return iterator;
+       }
+
+       function Headers(headers) {
+         this.map = {};
+
+         if (headers instanceof Headers) {
+           headers.forEach(function (value, name) {
+             this.append(name, value);
+           }, this);
+         } else if (Array.isArray(headers)) {
+           headers.forEach(function (header) {
+             this.append(header[0], header[1]);
+           }, this);
+         } else if (headers) {
+           Object.getOwnPropertyNames(headers).forEach(function (name) {
+             this.append(name, headers[name]);
+           }, this);
+         }
+       }
+
+       Headers.prototype.append = function (name, value) {
+         name = normalizeName(name);
+         value = normalizeValue(value);
+         var oldValue = this.map[name];
+         this.map[name] = oldValue ? oldValue + ', ' + value : value;
+       };
+
+       Headers.prototype['delete'] = function (name) {
+         delete this.map[normalizeName(name)];
+       };
+
+       Headers.prototype.get = function (name) {
+         name = normalizeName(name);
+         return this.has(name) ? this.map[name] : null;
+       };
+
+       Headers.prototype.has = function (name) {
+         return this.map.hasOwnProperty(normalizeName(name));
+       };
+
+       Headers.prototype.set = function (name, value) {
+         this.map[normalizeName(name)] = normalizeValue(value);
+       };
+
+       Headers.prototype.forEach = function (callback, thisArg) {
+         for (var name in this.map) {
+           if (this.map.hasOwnProperty(name)) {
+             callback.call(thisArg, this.map[name], name, this);
+           }
+         }
+       };
+
+       Headers.prototype.keys = function () {
+         var items = [];
+         this.forEach(function (value, name) {
+           items.push(name);
+         });
+         return iteratorFor(items);
+       };
+
+       Headers.prototype.values = function () {
+         var items = [];
+         this.forEach(function (value) {
+           items.push(value);
+         });
+         return iteratorFor(items);
+       };
+
+       Headers.prototype.entries = function () {
+         var items = [];
+         this.forEach(function (value, name) {
+           items.push([name, value]);
+         });
+         return iteratorFor(items);
+       };
+
+       if (support.iterable) {
+         Headers.prototype[Symbol.iterator] = Headers.prototype.entries;
+       }
+
+       function consumed(body) {
+         if (body.bodyUsed) {
+           return Promise.reject(new TypeError('Already read'));
+         }
+
+         body.bodyUsed = true;
+       }
+
+       function fileReaderReady(reader) {
+         return new Promise(function (resolve, reject) {
+           reader.onload = function () {
+             resolve(reader.result);
+           };
+
+           reader.onerror = function () {
+             reject(reader.error);
+           };
+         });
+       }
+
+       function readBlobAsArrayBuffer(blob) {
+         var reader = new FileReader();
+         var promise = fileReaderReady(reader);
+         reader.readAsArrayBuffer(blob);
+         return promise;
+       }
+
+       function readBlobAsText(blob) {
+         var reader = new FileReader();
+         var promise = fileReaderReady(reader);
+         reader.readAsText(blob);
+         return promise;
+       }
+
+       function readArrayBufferAsText(buf) {
+         var view = new Uint8Array(buf);
+         var chars = new Array(view.length);
+
+         for (var i = 0; i < view.length; i++) {
+           chars[i] = String.fromCharCode(view[i]);
+         }
+
+         return chars.join('');
+       }
+
+       function bufferClone(buf) {
+         if (buf.slice) {
+           return buf.slice(0);
+         } else {
+           var view = new Uint8Array(buf.byteLength);
+           view.set(new Uint8Array(buf));
+           return view.buffer;
+         }
+       }
+
+       function Body() {
+         this.bodyUsed = false;
+
+         this._initBody = function (body) {
+           /*

              fetch-mock wraps the Response object in an ES6 Proxy to
              provide useful test harness features such as flush. However, on
              ES5 browsers without fetch or Proxy support pollyfills must be used;
              fetch-mock wraps the Response object in an ES6 Proxy to
              provide useful test harness features such as flush. However, on
              ES5 browsers without fetch or Proxy support pollyfills must be used;


@@ -6590,7 +7393,7 @@
            this.credentials = input.credentials;
 
            if (!options.headers) {
            this.credentials = input.credentials;
 
            if (!options.headers) {

-             this.headers = new Headers$1(input.headers);
+             this.headers = new Headers(input.headers);

            }
 
            this.method = input.method;
            }
 
            this.method = input.method;


@@ -6608,7 +7411,7 @@
          this.credentials = options.credentials || this.credentials || 'same-origin';
 
          if (options.headers || !this.headers) {
          this.credentials = options.credentials || this.credentials || 'same-origin';
 
          if (options.headers || !this.headers) {

-           this.headers = new Headers$1(options.headers);
+           this.headers = new Headers(options.headers);

          }
 
          this.method = normalizeMethod(options.method || this.method || 'GET');
          }
 
          this.method = normalizeMethod(options.method || this.method || 'GET');


@@ -6659,11 +7462,16 @@
        }
 
        function parseHeaders(rawHeaders) {
        }
 
        function parseHeaders(rawHeaders) {

-         var headers = new Headers$1(); // Replace instances of \r\n and \n followed by at least one space or horizontal tab with a space
+         var headers = new Headers(); // Replace instances of \r\n and \n followed by at least one space or horizontal tab with a space

          // https://tools.ietf.org/html/rfc7230#section-3.2
 
          // https://tools.ietf.org/html/rfc7230#section-3.2
 

-         var preProcessedHeaders = rawHeaders.replace(/\r?\n[\t ]+/g, ' ');
-         preProcessedHeaders.split(/\r?\n/).forEach(function (line) {
+         var preProcessedHeaders = rawHeaders.replace(/\r?\n[\t ]+/g, ' '); // Avoiding split via regex to work around a common IE11 bug with the core-js 3.6.0 regex polyfill
+         // https://github.com/github/fetch/issues/748
+         // https://github.com/zloirock/core-js/issues/751
+
+         preProcessedHeaders.split('\r').map(function (header) {
+           return header.indexOf('\n') === 0 ? header.substr(1, header.length) : header;
+         }).forEach(function (line) {

            var parts = line.split(':');
            var key = parts.shift().trim();
 
            var parts = line.split(':');
            var key = parts.shift().trim();
 


@@ -6688,8 +7496,8 @@
          this.type = 'default';
          this.status = options.status === undefined ? 200 : options.status;
          this.ok = this.status >= 200 && this.status < 300;
          this.type = 'default';
          this.status = options.status === undefined ? 200 : options.status;
          this.ok = this.status >= 200 && this.status < 300;

-         this.statusText = 'statusText' in options ? options.statusText : '';
-         this.headers = new Headers$1(options.headers);
+         this.statusText = options.statusText === undefined ? '' : '' + options.statusText;
+         this.headers = new Headers(options.headers);

          this.url = options.url || '';
 
          this._initBody(bodyInit);
          this.url = options.url || '';
 
          this._initBody(bodyInit);


@@ -6700,7 +7508,7 @@
          return new Response(this._bodyInit, {
            status: this.status,
            statusText: this.statusText,
          return new Response(this._bodyInit, {
            status: this.status,
            statusText: this.statusText,

-           headers: new Headers$1(this.headers),
+           headers: new Headers(this.headers),

            url: this.url
          });
        };
            url: this.url
          });
        };


@@ -6729,7 +7537,7 @@
          });
        };
 
          });
        };
 

-       var DOMException$1 = global$1.DOMException;
+       var DOMException$1 = global$8.DOMException;

 
        try {
          new DOMException$1();
 
        try {
          new DOMException$1();


@@ -6792,7 +7600,7 @@
 
            function fixUrl(url) {
              try {
 
            function fixUrl(url) {
              try {

-               return url === '' && global$1.location.href ? global$1.location.href : url;
+               return url === '' && global$8.location.href ? global$8.location.href : url;

              } catch (e) {
                return url;
              }
              } catch (e) {
                return url;
              }


@@ -6814,7 +7622,7 @@
              }
            }
 
              }
            }
 

-           if (init && _typeof(init.headers) === 'object' && !(init.headers instanceof Headers$1)) {
+           if (init && _typeof(init.headers) === 'object' && !(init.headers instanceof Headers)) {

              Object.getOwnPropertyNames(init.headers).forEach(function (name) {
                xhr.setRequestHeader(name, normalizeValue(init.headers[name]));
              });
              Object.getOwnPropertyNames(init.headers).forEach(function (name) {
                xhr.setRequestHeader(name, normalizeValue(init.headers[name]));
              });


@@ -6840,164 +7648,103 @@
        }
        fetch$1.polyfill = true;
 
        }
        fetch$1.polyfill = true;
 

-       if (!global$1.fetch) {
-         global$1.fetch = fetch$1;
-         global$1.Headers = Headers$1;
-         global$1.Request = Request;
-         global$1.Response = Response;
+       if (!global$8.fetch) {
+         global$8.fetch = fetch$1;
+         global$8.Headers = Headers;
+         global$8.Request = Request;
+         global$8.Response = Response;

        }
 
        }
 

-       // `Symbol.toStringTag` well-known symbol
-       // https://tc39.github.io/ecma262/#sec-symbol.tostringtag
-       defineWellKnownSymbol('toStringTag');
-
-       var HAS_SPECIES_SUPPORT$2 = arrayMethodHasSpeciesSupport('splice');
-       var USES_TO_LENGTH$5 = arrayMethodUsesToLength('splice', { ACCESSORS: true, 0: 0, 1: 2 });
-
-       var max$3 = Math.max;
-       var min$6 = Math.min;
-       var MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF;
-       var MAXIMUM_ALLOWED_LENGTH_EXCEEDED = 'Maximum allowed length exceeded';
-
-       // `Array.prototype.splice` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.splice
-       // with adding support of @@species
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$2 || !USES_TO_LENGTH$5 }, {
-         splice: function splice(start, deleteCount /* , ...items */) {
-           var O = toObject(this);
-           var len = toLength(O.length);
-           var actualStart = toAbsoluteIndex(start, len);
-           var argumentsLength = arguments.length;
-           var insertCount, actualDeleteCount, A, k, from, to;
-           if (argumentsLength === 0) {
-             insertCount = actualDeleteCount = 0;
-           } else if (argumentsLength === 1) {
-             insertCount = 0;
-             actualDeleteCount = len - actualStart;
-           } else {
-             insertCount = argumentsLength - 2;
-             actualDeleteCount = min$6(max$3(toInteger(deleteCount), 0), len - actualStart);
-           }
-           if (len + insertCount - actualDeleteCount > MAX_SAFE_INTEGER) {
-             throw TypeError(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
-           }
-           A = arraySpeciesCreate(O, actualDeleteCount);
-           for (k = 0; k < actualDeleteCount; k++) {
-             from = actualStart + k;
-             if (from in O) createProperty(A, k, O[from]);
-           }
-           A.length = actualDeleteCount;
-           if (insertCount < actualDeleteCount) {
-             for (k = actualStart; k < len - actualDeleteCount; k++) {
-               from = k + actualDeleteCount;
-               to = k + insertCount;
-               if (from in O) O[to] = O[from];
-               else delete O[to];
-             }
-             for (k = len; k > len - actualDeleteCount + insertCount; k--) delete O[k - 1];
-           } else if (insertCount > actualDeleteCount) {
-             for (k = len - actualDeleteCount; k > actualStart; k--) {
-               from = k + actualDeleteCount - 1;
-               to = k + insertCount - 1;
-               if (from in O) O[to] = O[from];
-               else delete O[to];
-             }
-           }
-           for (k = 0; k < insertCount; k++) {
-             O[k + actualStart] = arguments[k + 2];
-           }
-           O.length = len - actualDeleteCount + insertCount;
-           return A;
-         }
-       });
-
-       // JSON[@@toStringTag] property
-       // https://tc39.github.io/ecma262/#sec-json-@@tostringtag
-       setToStringTag(global_1.JSON, 'JSON', true);
-
-       // Math[@@toStringTag] property
-       // https://tc39.github.io/ecma262/#sec-math-@@tostringtag
-       setToStringTag(Math, 'Math', true);
+       var $$L = _export;
+       var DESCRIPTORS$7 = descriptors;
+       var objectDefinePropertyModile = objectDefineProperty;

 
        // `Object.defineProperty` method
 
        // `Object.defineProperty` method

-       // https://tc39.github.io/ecma262/#sec-object.defineproperty
-       _export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
-         defineProperty: objectDefineProperty.f
+       // https://tc39.es/ecma262/#sec-object.defineproperty
+       $$L({ target: 'Object', stat: true, forced: !DESCRIPTORS$7, sham: !DESCRIPTORS$7 }, {
+         defineProperty: objectDefinePropertyModile.f

        });
 
        });
 

-       var nativeGetOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
-
-
-       var FAILS_ON_PRIMITIVES$1 = fails(function () { nativeGetOwnPropertyDescriptor$2(1); });
-       var FORCED$5 = !descriptors || FAILS_ON_PRIMITIVES$1;
+       var $$K = _export;
+       var setPrototypeOf = objectSetPrototypeOf;

 
 

-       // `Object.getOwnPropertyDescriptor` method
-       // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
-       _export({ target: 'Object', stat: true, forced: FORCED$5, sham: !descriptors }, {
-         getOwnPropertyDescriptor: function getOwnPropertyDescriptor(it, key) {
-           return nativeGetOwnPropertyDescriptor$2(toIndexedObject(it), key);
-         }
+       // `Object.setPrototypeOf` method
+       // https://tc39.es/ecma262/#sec-object.setprototypeof
+       $$K({ target: 'Object', stat: true }, {
+         setPrototypeOf: setPrototypeOf

        });
 
        });
 

-       var FAILS_ON_PRIMITIVES$2 = fails(function () { objectGetPrototypeOf(1); });
+       var $$J = _export;
+       var fails$i = fails$N;
+       var toObject$5 = toObject$i;
+       var nativeGetPrototypeOf = objectGetPrototypeOf;
+       var CORRECT_PROTOTYPE_GETTER = correctPrototypeGetter;
+
+       var FAILS_ON_PRIMITIVES$3 = fails$i(function () { nativeGetPrototypeOf(1); });

 
        // `Object.getPrototypeOf` method
 
        // `Object.getPrototypeOf` method

-       // https://tc39.github.io/ecma262/#sec-object.getprototypeof
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$2, sham: !correctPrototypeGetter }, {
+       // https://tc39.es/ecma262/#sec-object.getprototypeof
+       $$J({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$3, sham: !CORRECT_PROTOTYPE_GETTER }, {

          getPrototypeOf: function getPrototypeOf(it) {
          getPrototypeOf: function getPrototypeOf(it) {

-           return objectGetPrototypeOf(toObject(it));
+           return nativeGetPrototypeOf(toObject$5(it));

          }
        });
 
          }
        });
 

-       // `Object.setPrototypeOf` method
-       // https://tc39.github.io/ecma262/#sec-object.setprototypeof
-       _export({ target: 'Object', stat: true }, {
-         setPrototypeOf: objectSetPrototypeOf
-       });
+       var aFunction$2 = aFunction$9;
+       var isObject$a = isObject$r;

 
 

-       var slice$1 = [].slice;
+       var slice$2 = [].slice;

        var factories = {};
 
        var construct = function (C, argsLength, args) {
          if (!(argsLength in factories)) {
            for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']';
        var factories = {};
 
        var construct = function (C, argsLength, args) {
          if (!(argsLength in factories)) {
            for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']';

-           // eslint-disable-next-line no-new-func
+           // eslint-disable-next-line no-new-func -- we have no proper alternatives, IE8- only

            factories[argsLength] = Function('C,a', 'return new C(' + list.join(',') + ')');
          } return factories[argsLength](C, args);
        };
 
        // `Function.prototype.bind` method implementation
            factories[argsLength] = Function('C,a', 'return new C(' + list.join(',') + ')');
          } return factories[argsLength](C, args);
        };
 
        // `Function.prototype.bind` method implementation

-       // https://tc39.github.io/ecma262/#sec-function.prototype.bind
+       // https://tc39.es/ecma262/#sec-function.prototype.bind

        var functionBind = Function.bind || function bind(that /* , ...args */) {
        var functionBind = Function.bind || function bind(that /* , ...args */) {

-         var fn = aFunction$1(this);
-         var partArgs = slice$1.call(arguments, 1);
+         var fn = aFunction$2(this);
+         var partArgs = slice$2.call(arguments, 1);

          var boundFunction = function bound(/* args... */) {
          var boundFunction = function bound(/* args... */) {

-           var args = partArgs.concat(slice$1.call(arguments));
+           var args = partArgs.concat(slice$2.call(arguments));

            return this instanceof boundFunction ? construct(fn, args.length, args) : fn.apply(that, args);
          };
            return this instanceof boundFunction ? construct(fn, args.length, args) : fn.apply(that, args);
          };

-         if (isObject(fn.prototype)) boundFunction.prototype = fn.prototype;
+         if (isObject$a(fn.prototype)) boundFunction.prototype = fn.prototype;

          return boundFunction;
        };
 
          return boundFunction;
        };
 

-       var nativeConstruct = getBuiltIn('Reflect', 'construct');
+       var $$I = _export;
+       var getBuiltIn$1 = getBuiltIn$9;
+       var aFunction$1 = aFunction$9;
+       var anObject$3 = anObject$m;
+       var isObject$9 = isObject$r;
+       var create$5 = objectCreate;
+       var bind$4 = functionBind;
+       var fails$h = fails$N;
+
+       var nativeConstruct = getBuiltIn$1('Reflect', 'construct');

 
        // `Reflect.construct` method
 
        // `Reflect.construct` method

-       // https://tc39.github.io/ecma262/#sec-reflect.construct
+       // https://tc39.es/ecma262/#sec-reflect.construct

        // MS Edge supports only 2 arguments and argumentsList argument is optional
        // FF Nightly sets third argument as `new.target`, but does not create `this` from it
        // MS Edge supports only 2 arguments and argumentsList argument is optional
        // FF Nightly sets third argument as `new.target`, but does not create `this` from it

-       var NEW_TARGET_BUG = fails(function () {
+       var NEW_TARGET_BUG = fails$h(function () {

          function F() { /* empty */ }
          return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);
        });
          function F() { /* empty */ }
          return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);
        });

-       var ARGS_BUG = !fails(function () {
+       var ARGS_BUG = !fails$h(function () {

          nativeConstruct(function () { /* empty */ });
        });
          nativeConstruct(function () { /* empty */ });
        });

-       var FORCED$6 = NEW_TARGET_BUG || ARGS_BUG;
+       var FORCED$a = NEW_TARGET_BUG || ARGS_BUG;

 
 

-       _export({ target: 'Reflect', stat: true, forced: FORCED$6, sham: FORCED$6 }, {
+       $$I({ target: 'Reflect', stat: true, forced: FORCED$a, sham: FORCED$a }, {

          construct: function construct(Target, args /* , newTarget */) {
            aFunction$1(Target);
          construct: function construct(Target, args /* , newTarget */) {
            aFunction$1(Target);

-           anObject(args);
+           anObject$3(args);

            var newTarget = arguments.length < 3 ? Target : aFunction$1(arguments[2]);
            if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);
            if (Target == newTarget) {
            var newTarget = arguments.length < 3 ? Target : aFunction$1(arguments[2]);
            if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);
            if (Target == newTarget) {


@@ -7012,76 +7759,187 @@
              // w/o altered newTarget, lot of arguments case
              var $args = [null];
              $args.push.apply($args, args);
              // w/o altered newTarget, lot of arguments case
              var $args = [null];
              $args.push.apply($args, args);

-             return new (functionBind.apply(Target, $args))();
+             return new (bind$4.apply(Target, $args))();

            }
            // with altered newTarget, not support built-in constructors
            var proto = newTarget.prototype;
            }
            // with altered newTarget, not support built-in constructors
            var proto = newTarget.prototype;

-           var instance = objectCreate(isObject(proto) ? proto : Object.prototype);
+           var instance = create$5(isObject$9(proto) ? proto : Object.prototype);

            var result = Function.apply.call(Target, instance, args);
            var result = Function.apply.call(Target, instance, args);

-           return isObject(result) ? result : instance;
+           return isObject$9(result) ? result : instance;

          }
        });
 
          }
        });
 

+       var $$H = _export;
+       var isObject$8 = isObject$r;
+       var anObject$2 = anObject$m;
+       var has$3 = has$j;
+       var getOwnPropertyDescriptorModule = objectGetOwnPropertyDescriptor;
+       var getPrototypeOf = objectGetPrototypeOf;
+

        // `Reflect.get` method
        // `Reflect.get` method

-       // https://tc39.github.io/ecma262/#sec-reflect.get
-       function get$2(target, propertyKey /* , receiver */) {
+       // https://tc39.es/ecma262/#sec-reflect.get
+       function get$3(target, propertyKey /* , receiver */) {

          var receiver = arguments.length < 3 ? target : arguments[2];
          var descriptor, prototype;
          var receiver = arguments.length < 3 ? target : arguments[2];
          var descriptor, prototype;

-         if (anObject(target) === receiver) return target[propertyKey];
-         if (descriptor = objectGetOwnPropertyDescriptor.f(target, propertyKey)) return has(descriptor, 'value')
+         if (anObject$2(target) === receiver) return target[propertyKey];
+         if (descriptor = getOwnPropertyDescriptorModule.f(target, propertyKey)) return has$3(descriptor, 'value')

            ? descriptor.value
            : descriptor.get === undefined
              ? undefined
              : descriptor.get.call(receiver);
            ? descriptor.value
            : descriptor.get === undefined
              ? undefined
              : descriptor.get.call(receiver);

-         if (isObject(prototype = objectGetPrototypeOf(target))) return get$2(prototype, propertyKey, receiver);
+         if (isObject$8(prototype = getPrototypeOf(target))) return get$3(prototype, propertyKey, receiver);

        }
 
        }
 

-       _export({ target: 'Reflect', stat: true }, {
-         get: get$2
+       $$H({ target: 'Reflect', stat: true }, {
+         get: get$3

        });
 
        });
 

-       (function (factory) {
-          factory();
-       })(function () {
-
-         function _classCallCheck(instance, Constructor) {
-           if (!(instance instanceof Constructor)) {
-             throw new TypeError("Cannot call a class as a function");
-           }
-         }
+       var $$G = _export;
+       var fails$g = fails$N;
+       var toIndexedObject$1 = toIndexedObject$b;
+       var nativeGetOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+       var DESCRIPTORS$6 = descriptors;

 
 

-         function _defineProperties(target, props) {
-           for (var i = 0; i < props.length; i++) {
-             var descriptor = props[i];
-             descriptor.enumerable = descriptor.enumerable || false;
-             descriptor.configurable = true;
-             if ("value" in descriptor) descriptor.writable = true;
-             Object.defineProperty(target, descriptor.key, descriptor);
-           }
-         }
+       var FAILS_ON_PRIMITIVES$2 = fails$g(function () { nativeGetOwnPropertyDescriptor(1); });
+       var FORCED$9 = !DESCRIPTORS$6 || FAILS_ON_PRIMITIVES$2;

 
 

-         function _createClass(Constructor, protoProps, staticProps) {
-           if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-           if (staticProps) _defineProperties(Constructor, staticProps);
-           return Constructor;
+       // `Object.getOwnPropertyDescriptor` method
+       // https://tc39.es/ecma262/#sec-object.getownpropertydescriptor
+       $$G({ target: 'Object', stat: true, forced: FORCED$9, sham: !DESCRIPTORS$6 }, {
+         getOwnPropertyDescriptor: function getOwnPropertyDescriptor(it, key) {
+           return nativeGetOwnPropertyDescriptor(toIndexedObject$1(it), key);

          }
          }

+       });

 
 

-         function _inherits(subClass, superClass) {
-           if (typeof superClass !== "function" && superClass !== null) {
-             throw new TypeError("Super expression must either be null or a function");
-           }
+       var $$F = _export;
+       var toAbsoluteIndex$1 = toAbsoluteIndex$8;
+       var toInteger$2 = toInteger$b;
+       var toLength$6 = toLength$q;
+       var toObject$4 = toObject$i;
+       var arraySpeciesCreate$1 = arraySpeciesCreate$3;
+       var createProperty$1 = createProperty$4;
+       var arrayMethodHasSpeciesSupport$2 = arrayMethodHasSpeciesSupport$5;

 
 

-           subClass.prototype = Object.create(superClass && superClass.prototype, {
-             constructor: {
-               value: subClass,
-               writable: true,
-               configurable: true
-             }
-           });
-           if (superClass) _setPrototypeOf(subClass, superClass);
-         }
+       var HAS_SPECIES_SUPPORT$1 = arrayMethodHasSpeciesSupport$2('splice');

 
 

-         function _getPrototypeOf(o) {
+       var max$1 = Math.max;
+       var min$3 = Math.min;
+       var MAX_SAFE_INTEGER$1 = 0x1FFFFFFFFFFFFF;
+       var MAXIMUM_ALLOWED_LENGTH_EXCEEDED = 'Maximum allowed length exceeded';
+
+       // `Array.prototype.splice` method
+       // https://tc39.es/ecma262/#sec-array.prototype.splice
+       // with adding support of @@species
+       $$F({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$1 }, {
+         splice: function splice(start, deleteCount /* , ...items */) {
+           var O = toObject$4(this);
+           var len = toLength$6(O.length);
+           var actualStart = toAbsoluteIndex$1(start, len);
+           var argumentsLength = arguments.length;
+           var insertCount, actualDeleteCount, A, k, from, to;
+           if (argumentsLength === 0) {
+             insertCount = actualDeleteCount = 0;
+           } else if (argumentsLength === 1) {
+             insertCount = 0;
+             actualDeleteCount = len - actualStart;
+           } else {
+             insertCount = argumentsLength - 2;
+             actualDeleteCount = min$3(max$1(toInteger$2(deleteCount), 0), len - actualStart);
+           }
+           if (len + insertCount - actualDeleteCount > MAX_SAFE_INTEGER$1) {
+             throw TypeError(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
+           }
+           A = arraySpeciesCreate$1(O, actualDeleteCount);
+           for (k = 0; k < actualDeleteCount; k++) {
+             from = actualStart + k;
+             if (from in O) createProperty$1(A, k, O[from]);
+           }
+           A.length = actualDeleteCount;
+           if (insertCount < actualDeleteCount) {
+             for (k = actualStart; k < len - actualDeleteCount; k++) {
+               from = k + actualDeleteCount;
+               to = k + insertCount;
+               if (from in O) O[to] = O[from];
+               else delete O[to];
+             }
+             for (k = len; k > len - actualDeleteCount + insertCount; k--) delete O[k - 1];
+           } else if (insertCount > actualDeleteCount) {
+             for (k = len - actualDeleteCount; k > actualStart; k--) {
+               from = k + actualDeleteCount - 1;
+               to = k + insertCount - 1;
+               if (from in O) O[to] = O[from];
+               else delete O[to];
+             }
+           }
+           for (k = 0; k < insertCount; k++) {
+             O[k + actualStart] = arguments[k + 2];
+           }
+           O.length = len - actualDeleteCount + insertCount;
+           return A;
+         }
+       });
+
+       var defineWellKnownSymbol$1 = defineWellKnownSymbol$4;
+
+       // `Symbol.toStringTag` well-known symbol
+       // https://tc39.es/ecma262/#sec-symbol.tostringtag
+       defineWellKnownSymbol$1('toStringTag');
+
+       var global$7 = global$F;
+       var setToStringTag$2 = setToStringTag$a;
+
+       // JSON[@@toStringTag] property
+       // https://tc39.es/ecma262/#sec-json-@@tostringtag
+       setToStringTag$2(global$7.JSON, 'JSON', true);
+
+       var setToStringTag$1 = setToStringTag$a;
+
+       // Math[@@toStringTag] property
+       // https://tc39.es/ecma262/#sec-math-@@tostringtag
+       setToStringTag$1(Math, 'Math', true);
+
+       (function (factory) {
+         factory();
+       })(function () {
+
+         function _classCallCheck(instance, Constructor) {
+           if (!(instance instanceof Constructor)) {
+             throw new TypeError("Cannot call a class as a function");
+           }
+         }
+
+         function _defineProperties(target, props) {
+           for (var i = 0; i < props.length; i++) {
+             var descriptor = props[i];
+             descriptor.enumerable = descriptor.enumerable || false;
+             descriptor.configurable = true;
+             if ("value" in descriptor) descriptor.writable = true;
+             Object.defineProperty(target, descriptor.key, descriptor);
+           }
+         }
+
+         function _createClass(Constructor, protoProps, staticProps) {
+           if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+           if (staticProps) _defineProperties(Constructor, staticProps);
+           return Constructor;
+         }
+
+         function _inherits(subClass, superClass) {
+           if (typeof superClass !== "function" && superClass !== null) {
+             throw new TypeError("Super expression must either be null or a function");
+           }
+
+           subClass.prototype = Object.create(superClass && superClass.prototype, {
+             constructor: {
+               value: subClass,
+               writable: true,
+               configurable: true
+             }
+           });
+           if (superClass) _setPrototypeOf(subClass, superClass);
+         }
+
+         function _getPrototypeOf(o) {

            _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
              return o.__proto__ || Object.getPrototypeOf(o);
            };
            _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
              return o.__proto__ || Object.getPrototypeOf(o);
            };


@@ -7103,7 +7961,7 @@
            if (typeof Proxy === "function") return true;
 
            try {
            if (typeof Proxy === "function") return true;
 
            try {

-             Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));
+             Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));

              return true;
            } catch (e) {
              return false;
              return true;
            } catch (e) {
              return false;


@@ -7188,12 +8046,15 @@
 
            _createClass(Emitter, [{
              key: "addEventListener",
 
            _createClass(Emitter, [{
              key: "addEventListener",

-             value: function addEventListener(type, callback) {
+             value: function addEventListener(type, callback, options) {

                if (!(type in this.listeners)) {
                  this.listeners[type] = [];
                }
 
                if (!(type in this.listeners)) {
                  this.listeners[type] = [];
                }
 

-               this.listeners[type].push(callback);
+               this.listeners[type].push({
+                 callback: callback,
+                 options: options
+               });

              }
            }, {
              key: "removeEventListener",
              }
            }, {
              key: "removeEventListener",


@@ -7205,7 +8066,7 @@
                var stack = this.listeners[type];
 
                for (var i = 0, l = stack.length; i < l; i++) {
                var stack = this.listeners[type];
 
                for (var i = 0, l = stack.length; i < l; i++) {

-                 if (stack[i] === callback) {
+                 if (stack[i].callback === callback) {

                    stack.splice(i, 1);
                    return;
                  }
                    stack.splice(i, 1);
                    return;
                  }


@@ -7214,22 +8075,27 @@
            }, {
              key: "dispatchEvent",
              value: function dispatchEvent(event) {
            }, {
              key: "dispatchEvent",
              value: function dispatchEvent(event) {

-               var _this = this;
-

                if (!(event.type in this.listeners)) {
                  return;
                }
 
                if (!(event.type in this.listeners)) {
                  return;
                }
 

-               var debounce = function debounce(callback) {
-                 setTimeout(function () {
-                   return callback.call(_this, event);
-                 });
-               };
-

                var stack = this.listeners[event.type];
                var stack = this.listeners[event.type];

+               var stackToCall = stack.slice();

 
 

-               for (var i = 0, l = stack.length; i < l; i++) {
-                 debounce(stack[i]);
+               for (var i = 0, l = stackToCall.length; i < l; i++) {
+                 var listener = stackToCall[i];
+
+                 try {
+                   listener.callback.call(this, event);
+                 } catch (e) {
+                   Promise.resolve().then(function () {
+                     throw e;
+                   });
+                 }
+
+                 if (listener.options && listener.options.once) {
+                   this.removeEventListener(event.type, listener.callback);
+                 }

                }
 
                return !event.defaultPrevented;
                }
 
                return !event.defaultPrevented;


@@ -7245,34 +8111,34 @@
            var _super = _createSuper(AbortSignal);
 
            function AbortSignal() {
            var _super = _createSuper(AbortSignal);
 
            function AbortSignal() {

-             var _this2;
+             var _this;

 
              _classCallCheck(this, AbortSignal);
 
 
              _classCallCheck(this, AbortSignal);
 

-             _this2 = _super.call(this); // Some versions of babel does not transpile super() correctly for IE <= 10, if the parent
+             _this = _super.call(this); // Some versions of babel does not transpile super() correctly for IE <= 10, if the parent

              // constructor has failed to run, then "this.listeners" will still be undefined and then we call
              // the parent constructor directly instead as a workaround. For general details, see babel bug:
              // https://github.com/babel/babel/issues/3041
              // This hack was added as a fix for the issue described here:
              // https://github.com/Financial-Times/polyfill-library/pull/59#issuecomment-477558042
 
              // constructor has failed to run, then "this.listeners" will still be undefined and then we call
              // the parent constructor directly instead as a workaround. For general details, see babel bug:
              // https://github.com/babel/babel/issues/3041
              // This hack was added as a fix for the issue described here:
              // https://github.com/Financial-Times/polyfill-library/pull/59#issuecomment-477558042
 

-             if (!_this2.listeners) {
-               Emitter.call(_assertThisInitialized(_this2));
+             if (!_this.listeners) {
+               Emitter.call(_assertThisInitialized(_this));

              } // Compared to assignment, Object.defineProperty makes properties non-enumerable by default and
              // we want Object.keys(new AbortController().signal) to be [] for compat with the native impl
 
 
              } // Compared to assignment, Object.defineProperty makes properties non-enumerable by default and
              // we want Object.keys(new AbortController().signal) to be [] for compat with the native impl
 
 

-             Object.defineProperty(_assertThisInitialized(_this2), 'aborted', {
+             Object.defineProperty(_assertThisInitialized(_this), 'aborted', {

                value: false,
                writable: true,
                configurable: true
              });
                value: false,
                writable: true,
                configurable: true
              });

-             Object.defineProperty(_assertThisInitialized(_this2), 'onabort', {
+             Object.defineProperty(_assertThisInitialized(_this), 'onabort', {

                value: null,
                writable: true,
                configurable: true
              });
                value: null,
                writable: true,
                configurable: true
              });

-             return _this2;
+             return _this;

            }
 
            _createClass(AbortSignal, [{
            }
 
            _createClass(AbortSignal, [{


@@ -7550,46 +8416,59 @@
          };
        }
 
          };
        }
 

-       var IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');
-       var MAX_SAFE_INTEGER$1 = 0x1FFFFFFFFFFFFF;
+       var $$E = _export;
+       var fails$f = fails$N;
+       var isArray$1 = isArray$6;
+       var isObject$7 = isObject$r;
+       var toObject$3 = toObject$i;
+       var toLength$5 = toLength$q;
+       var createProperty = createProperty$4;
+       var arraySpeciesCreate = arraySpeciesCreate$3;
+       var arrayMethodHasSpeciesSupport$1 = arrayMethodHasSpeciesSupport$5;
+       var wellKnownSymbol$2 = wellKnownSymbol$s;
+       var V8_VERSION = engineV8Version;
+
+       var IS_CONCAT_SPREADABLE = wellKnownSymbol$2('isConcatSpreadable');
+       var MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF;

        var MAXIMUM_ALLOWED_INDEX_EXCEEDED = 'Maximum allowed index exceeded';
 
        // We can't use this feature detection in V8 since it causes
        // deoptimization and serious performance degradation
        // https://github.com/zloirock/core-js/issues/679
        var MAXIMUM_ALLOWED_INDEX_EXCEEDED = 'Maximum allowed index exceeded';
 
        // We can't use this feature detection in V8 since it causes
        // deoptimization and serious performance degradation
        // https://github.com/zloirock/core-js/issues/679

-       var IS_CONCAT_SPREADABLE_SUPPORT = engineV8Version >= 51 || !fails(function () {
+       var IS_CONCAT_SPREADABLE_SUPPORT = V8_VERSION >= 51 || !fails$f(function () {

          var array = [];
          array[IS_CONCAT_SPREADABLE] = false;
          return array.concat()[0] !== array;
        });
 
          var array = [];
          array[IS_CONCAT_SPREADABLE] = false;
          return array.concat()[0] !== array;
        });
 

-       var SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('concat');
+       var SPECIES_SUPPORT = arrayMethodHasSpeciesSupport$1('concat');

 
        var isConcatSpreadable = function (O) {
 
        var isConcatSpreadable = function (O) {

-         if (!isObject(O)) return false;
+         if (!isObject$7(O)) return false;

          var spreadable = O[IS_CONCAT_SPREADABLE];
          var spreadable = O[IS_CONCAT_SPREADABLE];

-         return spreadable !== undefined ? !!spreadable : isArray(O);
+         return spreadable !== undefined ? !!spreadable : isArray$1(O);

        };
 
        };
 

-       var FORCED$7 = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;
+       var FORCED$8 = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;

 
        // `Array.prototype.concat` method
 
        // `Array.prototype.concat` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.concat
+       // https://tc39.es/ecma262/#sec-array.prototype.concat

        // with adding support of @@isConcatSpreadable and @@species
        // with adding support of @@isConcatSpreadable and @@species

-       _export({ target: 'Array', proto: true, forced: FORCED$7 }, {
-         concat: function concat(arg) { // eslint-disable-line no-unused-vars
-           var O = toObject(this);
+       $$E({ target: 'Array', proto: true, forced: FORCED$8 }, {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         concat: function concat(arg) {
+           var O = toObject$3(this);

            var A = arraySpeciesCreate(O, 0);
            var n = 0;
            var i, k, length, len, E;
            for (i = -1, length = arguments.length; i < length; i++) {
              E = i === -1 ? O : arguments[i];
              if (isConcatSpreadable(E)) {
            var A = arraySpeciesCreate(O, 0);
            var n = 0;
            var i, k, length, len, E;
            for (i = -1, length = arguments.length; i < length; i++) {
              E = i === -1 ? O : arguments[i];
              if (isConcatSpreadable(E)) {

-               len = toLength(E.length);
-               if (n + len > MAX_SAFE_INTEGER$1) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
+               len = toLength$5(E.length);
+               if (n + len > MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);

                for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
              } else {
                for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
              } else {

-               if (n >= MAX_SAFE_INTEGER$1) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
+               if (n >= MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);

                createProperty(A, n++, E);
              }
            }
                createProperty(A, n++, E);
              }
            }


@@ -7598,72 +8477,86 @@
          }
        });
 
          }
        });
 

+       var $$D = _export;
+       var assign$1 = objectAssign;
+

        // `Object.assign` method
        // `Object.assign` method

-       // https://tc39.github.io/ecma262/#sec-object.assign
-       _export({ target: 'Object', stat: true, forced: Object.assign !== objectAssign }, {
-         assign: objectAssign
+       // https://tc39.es/ecma262/#sec-object.assign
+       // eslint-disable-next-line es/no-object-assign -- required for testing
+       $$D({ target: 'Object', stat: true, forced: Object.assign !== assign$1 }, {
+         assign: assign$1

        });
 
        });
 

-       var $filter$1 = arrayIteration.filter;
-
-
+       var $$C = _export;
+       var $filter = arrayIteration.filter;
+       var arrayMethodHasSpeciesSupport = arrayMethodHasSpeciesSupport$5;

 
 

-       var HAS_SPECIES_SUPPORT$3 = arrayMethodHasSpeciesSupport('filter');
-       // Edge 14- issue
-       var USES_TO_LENGTH$6 = arrayMethodUsesToLength('filter');
+       var HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('filter');

 
        // `Array.prototype.filter` method
 
        // `Array.prototype.filter` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.filter
+       // https://tc39.es/ecma262/#sec-array.prototype.filter

        // with adding support of @@species
        // with adding support of @@species

-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$3 || !USES_TO_LENGTH$6 }, {
+       $$C({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {

          filter: function filter(callbackfn /* , thisArg */) {
          filter: function filter(callbackfn /* , thisArg */) {

-           return $filter$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+           return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 

+       var $$B = _export;
+       var toObject$2 = toObject$i;
+       var nativeKeys = objectKeys$4;
+       var fails$e = fails$N;
+
+       var FAILS_ON_PRIMITIVES$1 = fails$e(function () { nativeKeys(1); });
+
+       // `Object.keys` method
+       // https://tc39.es/ecma262/#sec-object.keys
+       $$B({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$1 }, {
+         keys: function keys(it) {
+           return nativeKeys(toObject$2(it));
+         }
+       });
+
+       var $$A = _export;
+       var isArray = isArray$6;
+

        var nativeReverse = [].reverse;
        var test$1 = [1, 2];
 
        // `Array.prototype.reverse` method
        var nativeReverse = [].reverse;
        var test$1 = [1, 2];
 
        // `Array.prototype.reverse` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.reverse
+       // https://tc39.es/ecma262/#sec-array.prototype.reverse

        // fix for Safari 12.0 bug
        // https://bugs.webkit.org/show_bug.cgi?id=188794
        // fix for Safari 12.0 bug
        // https://bugs.webkit.org/show_bug.cgi?id=188794

-       _export({ target: 'Array', proto: true, forced: String(test$1) === String(test$1.reverse()) }, {
+       $$A({ target: 'Array', proto: true, forced: String(test$1) === String(test$1.reverse()) }, {

          reverse: function reverse() {
          reverse: function reverse() {

-           // eslint-disable-next-line no-self-assign
+           // eslint-disable-next-line no-self-assign -- dirty hack

            if (isArray(this)) this.length = this.length;
            return nativeReverse.call(this);
          }
        });
 
            if (isArray(this)) this.length = this.length;
            return nativeReverse.call(this);
          }
        });
 

-       var FAILS_ON_PRIMITIVES$3 = fails(function () { objectKeys(1); });
+       var global$6 = global$F;
+       var trim$4 = stringTrim.trim;
+       var whitespaces$1 = whitespaces$4;

 
 

-       // `Object.keys` method
-       // https://tc39.github.io/ecma262/#sec-object.keys
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$3 }, {
-         keys: function keys(it) {
-           return objectKeys(toObject(it));
-         }
-       });
-
-       var trim = stringTrim.trim;
-
-
-       var $parseFloat = global_1.parseFloat;
-       var FORCED$8 = 1 / $parseFloat(whitespaces + '-0') !== -Infinity;
+       var $parseFloat = global$6.parseFloat;
+       var FORCED$7 = 1 / $parseFloat(whitespaces$1 + '-0') !== -Infinity;

 
        // `parseFloat` method
 
        // `parseFloat` method

-       // https://tc39.github.io/ecma262/#sec-parsefloat-string
-       var numberParseFloat = FORCED$8 ? function parseFloat(string) {
-         var trimmedString = trim(String(string));
+       // https://tc39.es/ecma262/#sec-parsefloat-string
+       var numberParseFloat = FORCED$7 ? function parseFloat(string) {
+         var trimmedString = trim$4(String(string));

          var result = $parseFloat(trimmedString);
          return result === 0 && trimmedString.charAt(0) == '-' ? -0 : result;
        } : $parseFloat;
 
          var result = $parseFloat(trimmedString);
          return result === 0 && trimmedString.charAt(0) == '-' ? -0 : result;
        } : $parseFloat;
 

+       var $$z = _export;
+       var parseFloatImplementation = numberParseFloat;
+

        // `parseFloat` method
        // `parseFloat` method

-       // https://tc39.github.io/ecma262/#sec-parsefloat-string
-       _export({ global: true, forced: parseFloat != numberParseFloat }, {
-         parseFloat: numberParseFloat
+       // https://tc39.es/ecma262/#sec-parsefloat-string
+       $$z({ global: true, forced: parseFloat != parseFloatImplementation }, {
+         parseFloat: parseFloatImplementation

        });
 
        /*
        });
 
        /*


@@ -8069,53 +8962,65 @@
          tidal_channel: true
        };
 
          tidal_channel: true
        };
 

-       var trim$1 = stringTrim.trim;
-
+       var global$5 = global$F;
+       var trim$3 = stringTrim.trim;
+       var whitespaces = whitespaces$4;

 
 

-       var $parseInt = global_1.parseInt;
-       var hex$1 = /^[+-]?0[Xx]/;
-       var FORCED$9 = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22;
+       var $parseInt = global$5.parseInt;
+       var hex$2 = /^[+-]?0[Xx]/;
+       var FORCED$6 = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22;

 
        // `parseInt` method
 
        // `parseInt` method

-       // https://tc39.github.io/ecma262/#sec-parseint-string-radix
-       var numberParseInt = FORCED$9 ? function parseInt(string, radix) {
-         var S = trim$1(String(string));
-         return $parseInt(S, (radix >>> 0) || (hex$1.test(S) ? 16 : 10));
+       // https://tc39.es/ecma262/#sec-parseint-string-radix
+       var numberParseInt = FORCED$6 ? function parseInt(string, radix) {
+         var S = trim$3(String(string));
+         return $parseInt(S, (radix >>> 0) || (hex$2.test(S) ? 16 : 10));

        } : $parseInt;
 
        } : $parseInt;
 

+       var $$y = _export;
+       var parseIntImplementation = numberParseInt;
+

        // `parseInt` method
        // `parseInt` method

-       // https://tc39.github.io/ecma262/#sec-parseint-string-radix
-       _export({ global: true, forced: parseInt != numberParseInt }, {
-         parseInt: numberParseInt
+       // https://tc39.es/ecma262/#sec-parseint-string-radix
+       $$y({ global: true, forced: parseInt != parseIntImplementation }, {
+         parseInt: parseIntImplementation

        });
 
        });
 

-       var freezing = !fails(function () {
-         return Object.isExtensible(Object.preventExtensions({}));
-       });
+       var internalMetadata = {exports: {}};

 
 

-       var internalMetadata = createCommonjsModule(function (module) {
-       var defineProperty = objectDefineProperty.f;
+       var fails$d = fails$N;

 
 

+       var freezing = !fails$d(function () {
+         // eslint-disable-next-line es/no-object-isextensible, es/no-object-preventextensions -- required for testing
+         return Object.isExtensible(Object.preventExtensions({}));
+       });

 
 

+       var hiddenKeys = hiddenKeys$6;
+       var isObject$6 = isObject$r;
+       var has$2 = has$j;
+       var defineProperty$3 = objectDefineProperty.f;
+       var uid = uid$5;
+       var FREEZING$1 = freezing;

 
        var METADATA = uid('meta');
 
        var METADATA = uid('meta');

-       var id = 0;
+       var id$1 = 0;

 
 

+       // eslint-disable-next-line es/no-object-isextensible -- safe

        var isExtensible = Object.isExtensible || function () {
          return true;
        };
 
        var setMetadata = function (it) {
        var isExtensible = Object.isExtensible || function () {
          return true;
        };
 
        var setMetadata = function (it) {

-         defineProperty(it, METADATA, { value: {
-           objectID: 'O' + ++id, // object ID
+         defineProperty$3(it, METADATA, { value: {
+           objectID: 'O' + ++id$1, // object ID

            weakData: {}          // weak collections IDs
          } });
        };
 
            weakData: {}          // weak collections IDs
          } });
        };
 

-       var fastKey = function (it, create) {
+       var fastKey$1 = function (it, create) {

          // return a primitive with prefix
          // return a primitive with prefix

-         if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
-         if (!has(it, METADATA)) {
+         if (!isObject$6(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
+         if (!has$2(it, METADATA)) {

            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return 'F';
            // not necessary to add metadata
            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return 'F';
            // not necessary to add metadata


@@ -8127,7 +9032,7 @@
        };
 
        var getWeakData = function (it, create) {
        };
 
        var getWeakData = function (it, create) {

-         if (!has(it, METADATA)) {
+         if (!has$2(it, METADATA)) {

            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return true;
            // not necessary to add metadata
            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return true;
            // not necessary to add metadata


@@ -8139,42 +9044,54 @@
        };
 
        // add metadata on freeze-family methods calling
        };
 
        // add metadata on freeze-family methods calling

-       var onFreeze = function (it) {
-         if (freezing && meta.REQUIRED && isExtensible(it) && !has(it, METADATA)) setMetadata(it);
+       var onFreeze$1 = function (it) {
+         if (FREEZING$1 && meta.REQUIRED && isExtensible(it) && !has$2(it, METADATA)) setMetadata(it);

          return it;
        };
 
          return it;
        };
 

-       var meta = module.exports = {
+       var meta = internalMetadata.exports = {

          REQUIRED: false,
          REQUIRED: false,

-         fastKey: fastKey,
+         fastKey: fastKey$1,

          getWeakData: getWeakData,
          getWeakData: getWeakData,

-         onFreeze: onFreeze
+         onFreeze: onFreeze$1

        };
 
        hiddenKeys[METADATA] = true;
        };
 
        hiddenKeys[METADATA] = true;

-       });

 
 

-       var collection = function (CONSTRUCTOR_NAME, wrapper, common) {
+       var $$x = _export;
+       var global$4 = global$F;
+       var isForced$2 = isForced_1;
+       var redefine$3 = redefine$g.exports;
+       var InternalMetadataModule = internalMetadata.exports;
+       var iterate$1 = iterate$3;
+       var anInstance$1 = anInstance$7;
+       var isObject$5 = isObject$r;
+       var fails$c = fails$N;
+       var checkCorrectnessOfIteration$1 = checkCorrectnessOfIteration$4;
+       var setToStringTag = setToStringTag$a;
+       var inheritIfRequired$2 = inheritIfRequired$4;
+
+       var collection$2 = function (CONSTRUCTOR_NAME, wrapper, common) {

          var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;
          var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;
          var ADDER = IS_MAP ? 'set' : 'add';
          var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;
          var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;
          var ADDER = IS_MAP ? 'set' : 'add';

-         var NativeConstructor = global_1[CONSTRUCTOR_NAME];
+         var NativeConstructor = global$4[CONSTRUCTOR_NAME];

          var NativePrototype = NativeConstructor && NativeConstructor.prototype;
          var Constructor = NativeConstructor;
          var exported = {};
 
          var fixMethod = function (KEY) {
            var nativeMethod = NativePrototype[KEY];
          var NativePrototype = NativeConstructor && NativeConstructor.prototype;
          var Constructor = NativeConstructor;
          var exported = {};
 
          var fixMethod = function (KEY) {
            var nativeMethod = NativePrototype[KEY];

-           redefine(NativePrototype, KEY,
+           redefine$3(NativePrototype, KEY,

              KEY == 'add' ? function add(value) {
                nativeMethod.call(this, value === 0 ? 0 : value);
                return this;
              } : KEY == 'delete' ? function (key) {
              KEY == 'add' ? function add(value) {
                nativeMethod.call(this, value === 0 ? 0 : value);
                return this;
              } : KEY == 'delete' ? function (key) {

-               return IS_WEAK && !isObject(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);

              } : KEY == 'get' ? function get(key) {
              } : KEY == 'get' ? function get(key) {

-               return IS_WEAK && !isObject(key) ? undefined : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? undefined : nativeMethod.call(this, key === 0 ? 0 : key);

              } : KEY == 'has' ? function has(key) {
              } : KEY == 'has' ? function has(key) {

-               return IS_WEAK && !isObject(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);

              } : function set(key, value) {
                nativeMethod.call(this, key === 0 ? 0 : key, value);
                return this;
              } : function set(key, value) {
                nativeMethod.call(this, key === 0 ? 0 : key, value);
                return this;


@@ -8182,24 +9099,28 @@
            );
          };
 
            );
          };
 

-         // eslint-disable-next-line max-len
-         if (isForced_1(CONSTRUCTOR_NAME, typeof NativeConstructor != 'function' || !(IS_WEAK || NativePrototype.forEach && !fails(function () {
-           new NativeConstructor().entries().next();
-         })))) {
+         var REPLACE = isForced$2(
+           CONSTRUCTOR_NAME,
+           typeof NativeConstructor != 'function' || !(IS_WEAK || NativePrototype.forEach && !fails$c(function () {
+             new NativeConstructor().entries().next();
+           }))
+         );
+
+         if (REPLACE) {

            // create collection constructor
            Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);
            // create collection constructor
            Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);

-           internalMetadata.REQUIRED = true;
-         } else if (isForced_1(CONSTRUCTOR_NAME, true)) {
+           InternalMetadataModule.REQUIRED = true;
+         } else if (isForced$2(CONSTRUCTOR_NAME, true)) {

            var instance = new Constructor();
            // early implementations not supports chaining
            var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
            // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false
            var instance = new Constructor();
            // early implementations not supports chaining
            var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
            // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false

-           var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });
+           var THROWS_ON_PRIMITIVES = fails$c(function () { instance.has(1); });

            // most early implementations doesn't supports iterables, most modern - not close it correctly
            // most early implementations doesn't supports iterables, most modern - not close it correctly

-           // eslint-disable-next-line no-new
-           var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });
+           // eslint-disable-next-line no-new -- required for testing
+           var ACCEPT_ITERABLES = checkCorrectnessOfIteration$1(function (iterable) { new NativeConstructor(iterable); });

            // for early implementations -0 and +0 not the same
            // for early implementations -0 and +0 not the same

-           var BUGGY_ZERO = !IS_WEAK && fails(function () {
+           var BUGGY_ZERO = !IS_WEAK && fails$c(function () {

              // V8 ~ Chromium 42- fails only with 5+ elements
              var $instance = new NativeConstructor();
              var index = 5;
              // V8 ~ Chromium 42- fails only with 5+ elements
              var $instance = new NativeConstructor();
              var index = 5;


@@ -8209,9 +9130,9 @@
 
            if (!ACCEPT_ITERABLES) {
              Constructor = wrapper(function (dummy, iterable) {
 
            if (!ACCEPT_ITERABLES) {
              Constructor = wrapper(function (dummy, iterable) {

-               anInstance(dummy, Constructor, CONSTRUCTOR_NAME);
-               var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);
-               if (iterable != undefined) iterate_1(iterable, that[ADDER], that, IS_MAP);
+               anInstance$1(dummy, Constructor, CONSTRUCTOR_NAME);
+               var that = inheritIfRequired$2(new NativeConstructor(), dummy, Constructor);
+               if (iterable != undefined) iterate$1(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });

                return that;
              });
              Constructor.prototype = NativePrototype;
                return that;
              });
              Constructor.prototype = NativePrototype;


@@ -8231,7 +9152,7 @@
          }
 
          exported[CONSTRUCTOR_NAME] = Constructor;
          }
 
          exported[CONSTRUCTOR_NAME] = Constructor;

-         _export({ global: true, forced: Constructor != NativeConstructor }, exported);
+         $$x({ global: true, forced: Constructor != NativeConstructor }, exported);

 
          setToStringTag(Constructor, CONSTRUCTOR_NAME);
 
 
          setToStringTag(Constructor, CONSTRUCTOR_NAME);
 


@@ -8240,34 +9161,34 @@
          return Constructor;
        };
 
          return Constructor;
        };
 

-       var defineProperty$8 = objectDefineProperty.f;
-
-
-
-
-
-
-
-
-       var fastKey = internalMetadata.fastKey;
-
-
-       var setInternalState$7 = internalState.set;
-       var internalStateGetterFor = internalState.getterFor;
-
-       var collectionStrong = {
+       var defineProperty$2 = objectDefineProperty.f;
+       var create$4 = objectCreate;
+       var redefineAll = redefineAll$4;
+       var bind$3 = functionBindContext;
+       var anInstance = anInstance$7;
+       var iterate = iterate$3;
+       var defineIterator = defineIterator$3;
+       var setSpecies$1 = setSpecies$5;
+       var DESCRIPTORS$5 = descriptors;
+       var fastKey = internalMetadata.exports.fastKey;
+       var InternalStateModule = internalState;
+
+       var setInternalState = InternalStateModule.set;
+       var internalStateGetterFor = InternalStateModule.getterFor;
+
+       var collectionStrong$2 = {

          getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {
            var C = wrapper(function (that, iterable) {
              anInstance(that, C, CONSTRUCTOR_NAME);
          getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {
            var C = wrapper(function (that, iterable) {
              anInstance(that, C, CONSTRUCTOR_NAME);

-             setInternalState$7(that, {
+             setInternalState(that, {

                type: CONSTRUCTOR_NAME,
                type: CONSTRUCTOR_NAME,

-               index: objectCreate(null),
+               index: create$4(null),

                first: undefined,
                last: undefined,
                size: 0
              });
                first: undefined,
                last: undefined,
                size: 0
              });

-             if (!descriptors) that.size = 0;
-             if (iterable != undefined) iterate_1(iterable, that[ADDER], that, IS_MAP);
+             if (!DESCRIPTORS$5) that.size = 0;
+             if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });

            });
 
            var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);
            });
 
            var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);


@@ -8291,7 +9212,7 @@
                };
                if (!state.first) state.first = entry;
                if (previous) previous.next = entry;
                };
                if (!state.first) state.first = entry;
                if (previous) previous.next = entry;

-               if (descriptors) state.size++;
+               if (DESCRIPTORS$5) state.size++;

                else that.size++;
                // add to index
                if (index !== 'F') state.index[index] = entry;
                else that.size++;
                // add to index
                if (index !== 'F') state.index[index] = entry;


@@ -8311,8 +9232,9 @@
            };
 
            redefineAll(C.prototype, {
            };
 
            redefineAll(C.prototype, {

-             // 23.1.3.1 Map.prototype.clear()
-             // 23.2.3.2 Set.prototype.clear()
+             // `{ Map, Set }.prototype.clear()` methods
+             // https://tc39.es/ecma262/#sec-map.prototype.clear
+             // https://tc39.es/ecma262/#sec-set.prototype.clear

              clear: function clear() {
                var that = this;
                var state = getInternalState(that);
              clear: function clear() {
                var that = this;
                var state = getInternalState(that);


@@ -8325,11 +9247,12 @@
                  entry = entry.next;
                }
                state.first = state.last = undefined;
                  entry = entry.next;
                }
                state.first = state.last = undefined;

-               if (descriptors) state.size = 0;
+               if (DESCRIPTORS$5) state.size = 0;

                else that.size = 0;
              },
                else that.size = 0;
              },

-             // 23.1.3.3 Map.prototype.delete(key)
-             // 23.2.3.4 Set.prototype.delete(value)
+             // `{ Map, Set }.prototype.delete(key)` methods
+             // https://tc39.es/ecma262/#sec-map.prototype.delete
+             // https://tc39.es/ecma262/#sec-set.prototype.delete

              'delete': function (key) {
                var that = this;
                var state = getInternalState(that);
              'delete': function (key) {
                var that = this;
                var state = getInternalState(that);


@@ -8343,15 +9266,16 @@
                  if (next) next.previous = prev;
                  if (state.first == entry) state.first = next;
                  if (state.last == entry) state.last = prev;
                  if (next) next.previous = prev;
                  if (state.first == entry) state.first = next;
                  if (state.last == entry) state.last = prev;

-                 if (descriptors) state.size--;
+                 if (DESCRIPTORS$5) state.size--;

                  else that.size--;
                } return !!entry;
              },
                  else that.size--;
                } return !!entry;
              },

-             // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
-             // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
+             // `{ Map, Set }.prototype.forEach(callbackfn, thisArg = undefined)` methods
+             // https://tc39.es/ecma262/#sec-map.prototype.foreach
+             // https://tc39.es/ecma262/#sec-set.prototype.foreach

              forEach: function forEach(callbackfn /* , that = undefined */) {
                var state = getInternalState(this);
              forEach: function forEach(callbackfn /* , that = undefined */) {
                var state = getInternalState(this);

-               var boundFunction = functionBindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
+               var boundFunction = bind$3(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);

                var entry;
                while (entry = entry ? entry.next : state.first) {
                  boundFunction(entry.value, entry.key, this);
                var entry;
                while (entry = entry ? entry.next : state.first) {
                  boundFunction(entry.value, entry.key, this);


@@ -8359,30 +9283,34 @@
                  while (entry && entry.removed) entry = entry.previous;
                }
              },
                  while (entry && entry.removed) entry = entry.previous;
                }
              },

-             // 23.1.3.7 Map.prototype.has(key)
-             // 23.2.3.7 Set.prototype.has(value)
+             // `{ Map, Set}.prototype.has(key)` methods
+             // https://tc39.es/ecma262/#sec-map.prototype.has
+             // https://tc39.es/ecma262/#sec-set.prototype.has

              has: function has(key) {
                return !!getEntry(this, key);
              }
            });
 
            redefineAll(C.prototype, IS_MAP ? {
              has: function has(key) {
                return !!getEntry(this, key);
              }
            });
 
            redefineAll(C.prototype, IS_MAP ? {

-             // 23.1.3.6 Map.prototype.get(key)
+             // `Map.prototype.get(key)` method
+             // https://tc39.es/ecma262/#sec-map.prototype.get

              get: function get(key) {
                var entry = getEntry(this, key);
                return entry && entry.value;
              },
              get: function get(key) {
                var entry = getEntry(this, key);
                return entry && entry.value;
              },

-             // 23.1.3.9 Map.prototype.set(key, value)
+             // `Map.prototype.set(key, value)` method
+             // https://tc39.es/ecma262/#sec-map.prototype.set

              set: function set(key, value) {
                return define(this, key === 0 ? 0 : key, value);
              }
            } : {
              set: function set(key, value) {
                return define(this, key === 0 ? 0 : key, value);
              }
            } : {

-             // 23.2.3.1 Set.prototype.add(value)
+             // `Set.prototype.add(value)` method
+             // https://tc39.es/ecma262/#sec-set.prototype.add

              add: function add(value) {
                return define(this, value = value === 0 ? 0 : value, value);
              }
            });
              add: function add(value) {
                return define(this, value = value === 0 ? 0 : value, value);
              }
            });

-           if (descriptors) defineProperty$8(C.prototype, 'size', {
+           if (DESCRIPTORS$5) defineProperty$2(C.prototype, 'size', {

              get: function () {
                return getInternalState(this).size;
              }
              get: function () {
                return getInternalState(this).size;
              }


@@ -8393,10 +9321,17 @@
            var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';
            var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);
            var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);
            var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';
            var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);
            var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);

-           // add .keys, .values, .entries, [@@iterator]
-           // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11
+           // `{ Map, Set }.prototype.{ keys, values, entries, @@iterator }()` methods
+           // https://tc39.es/ecma262/#sec-map.prototype.entries
+           // https://tc39.es/ecma262/#sec-map.prototype.keys
+           // https://tc39.es/ecma262/#sec-map.prototype.values
+           // https://tc39.es/ecma262/#sec-map.prototype-@@iterator
+           // https://tc39.es/ecma262/#sec-set.prototype.entries
+           // https://tc39.es/ecma262/#sec-set.prototype.keys
+           // https://tc39.es/ecma262/#sec-set.prototype.values
+           // https://tc39.es/ecma262/#sec-set.prototype-@@iterator

            defineIterator(C, CONSTRUCTOR_NAME, function (iterated, kind) {
            defineIterator(C, CONSTRUCTOR_NAME, function (iterated, kind) {

-             setInternalState$7(this, {
+             setInternalState(this, {

                type: ITERATOR_NAME,
                target: iterated,
                state: getInternalCollectionState(iterated),
                type: ITERATOR_NAME,
                target: iterated,
                state: getInternalCollectionState(iterated),


@@ -8421,16 +9356,21 @@
              return { value: [entry.key, entry.value], done: false };
            }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);
 
              return { value: [entry.key, entry.value], done: false };
            }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);
 

-           // add [@@species], 23.1.2.2, 23.2.2.2
-           setSpecies(CONSTRUCTOR_NAME);
+           // `{ Map, Set }.prototype[@@species]` accessors
+           // https://tc39.es/ecma262/#sec-get-map-@@species
+           // https://tc39.es/ecma262/#sec-get-set-@@species
+           setSpecies$1(CONSTRUCTOR_NAME);

          }
        };
 
          }
        };
 

+       var collection$1 = collection$2;
+       var collectionStrong$1 = collectionStrong$2;
+

        // `Set` constructor
        // `Set` constructor

-       // https://tc39.github.io/ecma262/#sec-set-objects
-       var es_set = collection('Set', function (init) {
+       // https://tc39.es/ecma262/#sec-set-objects
+       collection$1('Set', function (init) {

          return function Set() { return init(this, arguments.length ? arguments[0] : undefined); };
          return function Set() { return init(this, arguments.length ? arguments[0] : undefined); };

-       }, collectionStrong);
+       }, collectionStrong$1);

 
        function d3_ascending (a, b) {
          return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
 
        function d3_ascending (a, b) {
          return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;


@@ -8492,17 +9432,15 @@
          };
        }
 
          };
        }
 

+       var defineWellKnownSymbol = defineWellKnownSymbol$4;
+

        // `Symbol.asyncIterator` well-known symbol
        // `Symbol.asyncIterator` well-known symbol

-       // https://tc39.github.io/ecma262/#sec-symbol.asynciterator
+       // https://tc39.es/ecma262/#sec-symbol.asynciterator

        defineWellKnownSymbol('asyncIterator');
 
        defineWellKnownSymbol('asyncIterator');
 

-       var runtime_1 = createCommonjsModule(function (module) {
-         /**
-          * Copyright (c) 2014-present, Facebook, Inc.
-          *
-          * This source code is licensed under the MIT license found in the
-          * LICENSE file in the root directory of this source tree.
-          */
+       var runtime = {exports: {}};
+
+       (function (module) {

          var runtime = function (exports) {
 
            var Op = Object.prototype;
          var runtime = function (exports) {
 
            var Op = Object.prototype;


@@ -9202,7 +10140,7 @@
          // as the regeneratorRuntime namespace. Otherwise create a new empty
          // object. Either way, the resulting object will be used to initialize
          // the regeneratorRuntime variable at the top of this file.
          // as the regeneratorRuntime namespace. Otherwise create a new empty
          // object. Either way, the resulting object will be used to initialize
          // the regeneratorRuntime variable at the top of this file.

-          module.exports );
+         module.exports );

 
          try {
            regeneratorRuntime = runtime;
 
          try {
            regeneratorRuntime = runtime;


@@ -9218,11 +10156,11 @@
            // problems, please detail your unique predicament in a GitHub issue.
            Function("r", "regeneratorRuntime = r")(runtime);
          }
            // problems, please detail your unique predicament in a GitHub issue.
            Function("r", "regeneratorRuntime = r")(runtime);
          }

-       });
+       })(runtime);

 
 

-       var _marked = /*#__PURE__*/regeneratorRuntime.mark(numbers);
+       var _marked$3 = /*#__PURE__*/regeneratorRuntime.mark(numbers);

 
 

-       function number (x) {
+       function number$1 (x) {

          return x === null ? NaN : +x;
        }
        function numbers(values, valueof) {
          return x === null ? NaN : +x;
        }
        function numbers(values, valueof) {


@@ -9332,62 +10270,73 @@
                  return _context.stop();
              }
            }
                  return _context.stop();
              }
            }

-         }, _marked, null, [[2, 13, 16, 19], [23, 34, 37, 40]]);
+         }, _marked$3, null, [[2, 13, 16, 19], [23, 34, 37, 40]]);

        }
 
        var ascendingBisect = d3_bisector(d3_ascending);
        var bisectRight = ascendingBisect.right;
        }
 
        var ascendingBisect = d3_bisector(d3_ascending);
        var bisectRight = ascendingBisect.right;

-       var bisectCenter = d3_bisector(number).center;
-
-       // `Array.prototype.fill` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.fill
-       _export({ target: 'Array', proto: true }, {
-         fill: arrayFill
-       });
+       d3_bisector(number$1).center;

 
 

-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('fill');
+       var $$w = _export;
+       var from = arrayFrom$1;
+       var checkCorrectnessOfIteration = checkCorrectnessOfIteration$4;

 
 

-       var INCORRECT_ITERATION$1 = !checkCorrectnessOfIteration(function (iterable) {
+       var INCORRECT_ITERATION = !checkCorrectnessOfIteration(function (iterable) {
+         // eslint-disable-next-line es/no-array-from -- required for testing

          Array.from(iterable);
        });
 
        // `Array.from` method
          Array.from(iterable);
        });
 
        // `Array.from` method

-       // https://tc39.github.io/ecma262/#sec-array.from
-       _export({ target: 'Array', stat: true, forced: INCORRECT_ITERATION$1 }, {
-         from: arrayFrom
+       // https://tc39.es/ecma262/#sec-array.from
+       $$w({ target: 'Array', stat: true, forced: INCORRECT_ITERATION }, {
+         from: from

        });
 
        });
 

-       var $some$1 = arrayIteration.some;
+       var $$v = _export;
+       var fill = arrayFill$1;
+       var addToUnscopables$3 = addToUnscopables$5;

 
 

+       // `Array.prototype.fill` method
+       // https://tc39.es/ecma262/#sec-array.prototype.fill
+       $$v({ target: 'Array', proto: true }, {
+         fill: fill
+       });

 
 

+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables$3('fill');

 
 

-       var STRICT_METHOD$4 = arrayMethodIsStrict('some');
-       var USES_TO_LENGTH$7 = arrayMethodUsesToLength('some');
+       var $$u = _export;
+       var $some = arrayIteration.some;
+       var arrayMethodIsStrict$3 = arrayMethodIsStrict$8;
+
+       var STRICT_METHOD$3 = arrayMethodIsStrict$3('some');

 
        // `Array.prototype.some` method
 
        // `Array.prototype.some` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.some
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD$4 || !USES_TO_LENGTH$7 }, {
+       // https://tc39.es/ecma262/#sec-array.prototype.some
+       $$u({ target: 'Array', proto: true, forced: !STRICT_METHOD$3 }, {

          some: function some(callbackfn /* , thisArg */) {
          some: function some(callbackfn /* , thisArg */) {

-           return $some$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+           return $some(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 

+       var TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS = typedArrayConstructorsRequireWrappers;
+       var exportTypedArrayStaticMethod = arrayBufferViewCore.exportTypedArrayStaticMethod;
+       var typedArrayFrom = typedArrayFrom$2;
+
+       // `%TypedArray%.from` method
+       // https://tc39.es/ecma262/#sec-%typedarray%.from
+       exportTypedArrayStaticMethod('from', typedArrayFrom, TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS);
+
+       var createTypedArrayConstructor = typedArrayConstructor.exports;
+

        // `Float64Array` constructor
        // `Float64Array` constructor

-       // https://tc39.github.io/ecma262/#sec-typedarray-objects
-       typedArrayConstructor('Float64', function (init) {
+       // https://tc39.es/ecma262/#sec-typedarray-objects
+       createTypedArrayConstructor('Float64', function (init) {

          return function Float64Array(data, byteOffset, length) {
            return init(this, data, byteOffset, length);
          };
        });
 
          return function Float64Array(data, byteOffset, length) {
            return init(this, data, byteOffset, length);
          };
        });
 

-       var exportTypedArrayStaticMethod$1 = arrayBufferViewCore.exportTypedArrayStaticMethod;
-
-
-       // `%TypedArray%.from` method
-       // https://tc39.github.io/ecma262/#sec-%typedarray%.from
-       exportTypedArrayStaticMethod$1('from', typedArrayFrom, typedArrayConstructorsRequireWrappers);
-

        function d3_descending (a, b) {
          return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
        }
        function d3_descending (a, b) {
          return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
        }


@@ -9395,13 +10344,13 @@
        // https://github.com/python/cpython/blob/a74eea238f5baba15797e2e8b570d153bc8690a7/Modules/mathmodule.c#L1423
        var Adder = /*#__PURE__*/function () {
          function Adder() {
        // https://github.com/python/cpython/blob/a74eea238f5baba15797e2e8b570d153bc8690a7/Modules/mathmodule.c#L1423
        var Adder = /*#__PURE__*/function () {
          function Adder() {

-           _classCallCheck(this, Adder);
+           _classCallCheck$1(this, Adder);

 
            this._partials = new Float64Array(32);
            this._n = 0;
          }
 
 
            this._partials = new Float64Array(32);
            this._n = 0;
          }
 

-         _createClass(Adder, [{
+         _createClass$1(Adder, [{

            key: "add",
            value: function add(x) {
              var p = this._partials;
            key: "add",
            value: function add(x) {
              var p = this._partials;


@@ -9454,12 +10403,126 @@
          return Adder;
        }();
 
          return Adder;
        }();
 

+       var $$t = _export;
+       var DESCRIPTORS$4 = descriptors;
+       var defineProperties = objectDefineProperties;
+
+       // `Object.defineProperties` method
+       // https://tc39.es/ecma262/#sec-object.defineproperties
+       $$t({ target: 'Object', stat: true, forced: !DESCRIPTORS$4, sham: !DESCRIPTORS$4 }, {
+         defineProperties: defineProperties
+       });
+
+       var collection = collection$2;
+       var collectionStrong = collectionStrong$2;
+

        // `Map` constructor
        // `Map` constructor

-       // https://tc39.github.io/ecma262/#sec-map-objects
-       var es_map = collection('Map', function (init) {
+       // https://tc39.es/ecma262/#sec-map-objects
+       collection('Map', function (init) {

          return function Map() { return init(this, arguments.length ? arguments[0] : undefined); };
        }, collectionStrong);
 
          return function Map() { return init(this, arguments.length ? arguments[0] : undefined); };
        }, collectionStrong);
 

+       var $$s = _export;
+       var aFunction = aFunction$9;
+       var toObject$1 = toObject$i;
+       var toLength$4 = toLength$q;
+       var fails$b = fails$N;
+       var internalSort = arraySort;
+       var arrayMethodIsStrict$2 = arrayMethodIsStrict$8;
+       var FF = engineFfVersion;
+       var IE_OR_EDGE = engineIsIeOrEdge;
+       var V8 = engineV8Version;
+       var WEBKIT = engineWebkitVersion;
+
+       var test = [];
+       var nativeSort = test.sort;
+
+       // IE8-
+       var FAILS_ON_UNDEFINED = fails$b(function () {
+         test.sort(undefined);
+       });
+       // V8 bug
+       var FAILS_ON_NULL = fails$b(function () {
+         test.sort(null);
+       });
+       // Old WebKit
+       var STRICT_METHOD$2 = arrayMethodIsStrict$2('sort');
+
+       var STABLE_SORT = !fails$b(function () {
+         // feature detection can be too slow, so check engines versions
+         if (V8) return V8 < 70;
+         if (FF && FF > 3) return;
+         if (IE_OR_EDGE) return true;
+         if (WEBKIT) return WEBKIT < 603;
+
+         var result = '';
+         var code, chr, value, index;
+
+         // generate an array with more 512 elements (Chakra and old V8 fails only in this case)
+         for (code = 65; code < 76; code++) {
+           chr = String.fromCharCode(code);
+
+           switch (code) {
+             case 66: case 69: case 70: case 72: value = 3; break;
+             case 68: case 71: value = 4; break;
+             default: value = 2;
+           }
+
+           for (index = 0; index < 47; index++) {
+             test.push({ k: chr + index, v: value });
+           }
+         }
+
+         test.sort(function (a, b) { return b.v - a.v; });
+
+         for (index = 0; index < test.length; index++) {
+           chr = test[index].k.charAt(0);
+           if (result.charAt(result.length - 1) !== chr) result += chr;
+         }
+
+         return result !== 'DGBEFHACIJK';
+       });
+
+       var FORCED$5 = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || !STRICT_METHOD$2 || !STABLE_SORT;
+
+       var getSortCompare = function (comparefn) {
+         return function (x, y) {
+           if (y === undefined) return -1;
+           if (x === undefined) return 1;
+           if (comparefn !== undefined) return +comparefn(x, y) || 0;
+           return String(x) > String(y) ? 1 : -1;
+         };
+       };
+
+       // `Array.prototype.sort` method
+       // https://tc39.es/ecma262/#sec-array.prototype.sort
+       $$s({ target: 'Array', proto: true, forced: FORCED$5 }, {
+         sort: function sort(comparefn) {
+           if (comparefn !== undefined) aFunction(comparefn);
+
+           var array = toObject$1(this);
+
+           if (STABLE_SORT) return comparefn === undefined ? nativeSort.call(array) : nativeSort.call(array, comparefn);
+
+           var items = [];
+           var arrayLength = toLength$4(array.length);
+           var itemsLength, index;
+
+           for (index = 0; index < arrayLength; index++) {
+             if (index in array) items.push(array[index]);
+           }
+
+           items = internalSort(items, getSortCompare(comparefn));
+           itemsLength = items.length;
+           index = 0;
+
+           while (index < itemsLength) array[index] = items[index++];
+           while (index < arrayLength) delete array[index++];
+
+           return array;
+         }
+       });
+

        var e10 = Math.sqrt(50),
            e5 = Math.sqrt(10),
            e2 = Math.sqrt(2);
        var e10 = Math.sqrt(50),
            e5 = Math.sqrt(10),
            e2 = Math.sqrt(2);


@@ -9475,21 +10538,27 @@
          if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return [];
 
          if (step > 0) {
          if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return [];
 
          if (step > 0) {

-           start = Math.ceil(start / step);
-           stop = Math.floor(stop / step);
-           ticks = new Array(n = Math.ceil(stop - start + 1));
+           var r0 = Math.round(start / step),
+               r1 = Math.round(stop / step);
+           if (r0 * step < start) ++r0;
+           if (r1 * step > stop) --r1;
+           ticks = new Array(n = r1 - r0 + 1);

 
            while (++i < n) {
 
            while (++i < n) {

-             ticks[i] = (start + i) * step;
+             ticks[i] = (r0 + i) * step;

            }
          } else {
            step = -step;
            }
          } else {
            step = -step;

-           start = Math.ceil(start * step);
-           stop = Math.floor(stop * step);
-           ticks = new Array(n = Math.ceil(stop - start + 1));
+
+           var _r = Math.round(start * step),
+               _r2 = Math.round(stop * step);
+
+           if (_r / step < start) ++_r;
+           if (_r2 / step > stop) --_r2;
+           ticks = new Array(n = _r2 - _r + 1);

 
            while (++i < n) {
 
            while (++i < n) {

-             ticks[i] = (start + i) / step;
+             ticks[i] = (_r + i) / step;

            }
          }
 
            }
          }
 


@@ -9510,7 +10579,7 @@
          return stop < start ? -step1 : step1;
        }
 
          return stop < start ? -step1 : step1;
        }
 

-       function max$4(values, valueof) {
+       function max(values, valueof) {

          var max;
 
          if (valueof === undefined) {
          var max;
 
          if (valueof === undefined) {


@@ -9554,7 +10623,7 @@
          return max;
        }
 
          return max;
        }
 

-       function min$7(values, valueof) {
+       function min$2(values, valueof) {

          var min;
 
          if (valueof === undefined) {
          var min;
 
          if (valueof === undefined) {


@@ -9600,7 +10669,7 @@
 
        // ISC license, Copyright 2018 Vladimir Agafonkin.
 
 
        // ISC license, Copyright 2018 Vladimir Agafonkin.
 

-       function quickselect(array, k) {
+       function quickselect$3(array, k) {

          var left = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
          var right = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : array.length - 1;
          var compare = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : d3_ascending;
          var left = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
          var right = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : array.length - 1;
          var compare = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : d3_ascending;


@@ -9614,17 +10683,17 @@
              var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
              var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
              var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
              var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
              var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
              var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));

-             quickselect(array, k, newLeft, newRight, compare);
+             quickselect$3(array, k, newLeft, newRight, compare);

            }
 
            var t = array[k];
            var i = left;
            var j = right;
            }
 
            var t = array[k];
            var i = left;
            var j = right;

-           swap(array, left, k);
-           if (compare(array[right], t) > 0) swap(array, left, right);
+           swap$1(array, left, k);
+           if (compare(array[right], t) > 0) swap$1(array, left, right);

 
            while (i < j) {
 
            while (i < j) {

-             swap(array, i, j), ++i, --j;
+             swap$1(array, i, j), ++i, --j;

 
              while (compare(array[i], t) < 0) {
                ++i;
 
              while (compare(array[i], t) < 0) {
                ++i;


@@ -9635,7 +10704,7 @@
              }
            }
 
              }
            }
 

-           if (compare(array[left], t) === 0) swap(array, left, j);else ++j, swap(array, j, right);
+           if (compare(array[left], t) === 0) swap$1(array, left, j);else ++j, swap$1(array, j, right);

            if (j <= k) left = j + 1;
            if (k <= j) right = j - 1;
          }
            if (j <= k) left = j + 1;
            if (k <= j) right = j - 1;
          }


@@ -9643,7 +10712,7 @@
          return array;
        }
 
          return array;
        }
 

-       function swap(array, i, j) {
+       function swap$1(array, i, j) {

          var t = array[i];
          array[i] = array[j];
          array[j] = t;
          var t = array[i];
          array[i] = array[j];
          array[j] = t;


@@ -9652,13 +10721,13 @@
        function quantile(values, p, valueof) {
          values = Float64Array.from(numbers(values, valueof));
          if (!(n = values.length)) return;
        function quantile(values, p, valueof) {
          values = Float64Array.from(numbers(values, valueof));
          if (!(n = values.length)) return;

-         if ((p = +p) <= 0 || n < 2) return min$7(values);
-         if (p >= 1) return max$4(values);
+         if ((p = +p) <= 0 || n < 2) return min$2(values);
+         if (p >= 1) return max(values);

          var n,
              i = (n - 1) * p,
              i0 = Math.floor(i),
          var n,
              i = (n - 1) * p,
              i0 = Math.floor(i),

-             value0 = max$4(quickselect(values, i0).subarray(0, i0 + 1)),
-             value1 = min$7(values.subarray(i0 + 1));
+             value0 = max(quickselect$3(values, i0).subarray(0, i0 + 1)),
+             value1 = min$2(values.subarray(i0 + 1));

          return value0 + (value1 - value0) * (i - i0);
        }
 
          return value0 + (value1 - value0) * (i - i0);
        }
 


@@ -9666,7 +10735,7 @@
          return quantile(values, 0.5, valueof);
        }
 
          return quantile(values, 0.5, valueof);
        }
 

-       var _marked$1 = /*#__PURE__*/regeneratorRuntime.mark(flatten);
+       var _marked$2 = /*#__PURE__*/regeneratorRuntime.mark(flatten);

 
        function flatten(arrays) {
          var _iterator, _step, array;
 
        function flatten(arrays) {
          var _iterator, _step, array;


@@ -9715,14 +10784,14 @@
                  return _context.stop();
              }
            }
                  return _context.stop();
              }
            }

-         }, _marked$1, null, [[1, 10, 13, 16]]);
+         }, _marked$2, null, [[1, 10, 13, 16]]);

        }
 
        }
 

-       function merge(arrays) {
+       function merge$4(arrays) {

          return Array.from(flatten(arrays));
        }
 
          return Array.from(flatten(arrays));
        }
 

-       function range (start, stop, step) {
+       function range$1 (start, stop, step) {

          start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step;
          var i = -1,
              n = Math.max(0, Math.ceil((stop - start) / step)) | 0,
          start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step;
          var i = -1,
              n = Math.max(0, Math.ceil((stop - start) / step)) | 0,


@@ -9735,58 +10804,37 @@
          return range;
        }
 
          return range;
        }
 

-       var test$2 = [];
-       var nativeSort = test$2.sort;
-
-       // IE8-
-       var FAILS_ON_UNDEFINED = fails(function () {
-         test$2.sort(undefined);
-       });
-       // V8 bug
-       var FAILS_ON_NULL = fails(function () {
-         test$2.sort(null);
-       });
-       // Old WebKit
-       var STRICT_METHOD$5 = arrayMethodIsStrict('sort');
-
-       var FORCED$a = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || !STRICT_METHOD$5;
-
-       // `Array.prototype.sort` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.sort
-       _export({ target: 'Array', proto: true, forced: FORCED$a }, {
-         sort: function sort(comparefn) {
-           return comparefn === undefined
-             ? nativeSort.call(toObject(this))
-             : nativeSort.call(toObject(this), aFunction$1(comparefn));
-         }
-       });
-

        // `SameValue` abstract operation
        // `SameValue` abstract operation

-       // https://tc39.github.io/ecma262/#sec-samevalue
-       var sameValue = Object.is || function is(x, y) {
-         // eslint-disable-next-line no-self-compare
+       // https://tc39.es/ecma262/#sec-samevalue
+       // eslint-disable-next-line es/no-object-is -- safe
+       var sameValue$1 = Object.is || function is(x, y) {
+         // eslint-disable-next-line no-self-compare -- NaN check

          return x === y ? x !== 0 || 1 / x === 1 / y : x != x && y != y;
        };
 
          return x === y ? x !== 0 || 1 / x === 1 / y : x != x && y != y;
        };
 

+       var $$r = _export;
+
+       // eslint-disable-next-line es/no-math-hypot -- required for testing

        var $hypot = Math.hypot;
        var $hypot = Math.hypot;

-       var abs$1 = Math.abs;
-       var sqrt = Math.sqrt;
+       var abs$3 = Math.abs;
+       var sqrt$1 = Math.sqrt;

 
        // Chrome 77 bug
        // https://bugs.chromium.org/p/v8/issues/detail?id=9546
        var BUGGY = !!$hypot && $hypot(Infinity, NaN) !== Infinity;
 
        // `Math.hypot` method
 
        // Chrome 77 bug
        // https://bugs.chromium.org/p/v8/issues/detail?id=9546
        var BUGGY = !!$hypot && $hypot(Infinity, NaN) !== Infinity;
 
        // `Math.hypot` method

-       // https://tc39.github.io/ecma262/#sec-math.hypot
-       _export({ target: 'Math', stat: true, forced: BUGGY }, {
-         hypot: function hypot(value1, value2) { // eslint-disable-line no-unused-vars
+       // https://tc39.es/ecma262/#sec-math.hypot
+       $$r({ target: 'Math', stat: true, forced: BUGGY }, {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         hypot: function hypot(value1, value2) {

            var sum = 0;
            var i = 0;
            var aLen = arguments.length;
            var larg = 0;
            var arg, div;
            while (i < aLen) {
            var sum = 0;
            var i = 0;
            var aLen = arguments.length;
            var larg = 0;
            var arg, div;
            while (i < aLen) {

-             arg = abs$1(arguments[i++]);
+             arg = abs$3(arguments[i++]);

              if (larg < arg) {
                div = larg / arg;
                sum = sum * div * div + 1;
              if (larg < arg) {
                div = larg / arg;
                sum = sum * div * div + 1;


@@ -9796,43 +10844,46 @@
                sum += div * div;
              } else sum += arg;
            }
                sum += div * div;
              } else sum += arg;
            }

-           return larg === Infinity ? Infinity : larg * sqrt(sum);
+           return larg === Infinity ? Infinity : larg * sqrt$1(sum);

          }
        });
 
        // `Math.sign` method implementation
          }
        });
 
        // `Math.sign` method implementation

-       // https://tc39.github.io/ecma262/#sec-math.sign
+       // https://tc39.es/ecma262/#sec-math.sign
+       // eslint-disable-next-line es/no-math-sign -- safe

        var mathSign = Math.sign || function sign(x) {
        var mathSign = Math.sign || function sign(x) {

-         // eslint-disable-next-line no-self-compare
+         // eslint-disable-next-line no-self-compare -- NaN check

          return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
        };
 
          return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
        };
 

+       var $$q = _export;
+       var sign$1 = mathSign;
+

        // `Math.sign` method
        // `Math.sign` method

-       // https://tc39.github.io/ecma262/#sec-math.sign
-       _export({ target: 'Math', stat: true }, {
-         sign: mathSign
+       // https://tc39.es/ecma262/#sec-math.sign
+       $$q({ target: 'Math', stat: true }, {
+         sign: sign$1

        });
 
        });
 

-       var epsilon = 1e-6;
-       var epsilon2 = 1e-12;
+       var epsilon$1 = 1e-6;
+       var epsilon2$1 = 1e-12;

        var pi = Math.PI;
        var halfPi = pi / 2;
        var quarterPi = pi / 4;
        var tau = pi * 2;
        var pi = Math.PI;
        var halfPi = pi / 2;
        var quarterPi = pi / 4;
        var tau = pi * 2;

-       var degrees = 180 / pi;
+       var degrees$1 = 180 / pi;

        var radians = pi / 180;
        var abs$2 = Math.abs;
        var atan = Math.atan;
        var atan2 = Math.atan2;
        var cos = Math.cos;
        var radians = pi / 180;
        var abs$2 = Math.abs;
        var atan = Math.atan;
        var atan2 = Math.atan2;
        var cos = Math.cos;

-       var exp = Math.exp;
-       var hypot = Math.hypot;
+       var exp$2 = Math.exp;

        var log$1 = Math.log;
        var sin = Math.sin;
        var sign = Math.sign || function (x) {
          return x > 0 ? 1 : x < 0 ? -1 : 0;
        };
        var log$1 = Math.log;
        var sin = Math.sin;
        var sign = Math.sign || function (x) {
          return x > 0 ? 1 : x < 0 ? -1 : 0;
        };

-       var sqrt$1 = Math.sqrt;
+       var sqrt = Math.sqrt;

        var tan = Math.tan;
        function acos(x) {
          return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);
        var tan = Math.tan;
        function acos(x) {
          return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);


@@ -9841,7 +10892,7 @@
          return x > 1 ? halfPi : x < -1 ? -halfPi : Math.asin(x);
        }
 
          return x > 1 ? halfPi : x < -1 ? -halfPi : Math.asin(x);
        }
 

-       function noop() {}
+       function noop$1() {}

 
        function streamGeometry(geometry, stream) {
          if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) {
 
        function streamGeometry(geometry, stream) {
          if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) {


@@ -9948,72 +10999,72 @@
          }
        }
 
          }
        }
 

-       var areaRingSum = new Adder(); // hello?
+       var areaRingSum$1 = new Adder(); // hello?

 
 

-       var areaSum = new Adder(),
-           lambda00,
-           phi00,
-           lambda0,
-           cosPhi0,
-           sinPhi0;
-       var areaStream = {
-         point: noop,
-         lineStart: noop,
-         lineEnd: noop,
+       var areaSum$1 = new Adder(),
+           lambda00$1,
+           phi00$1,
+           lambda0$2,
+           cosPhi0$1,
+           sinPhi0$1;
+       var areaStream$1 = {
+         point: noop$1,
+         lineStart: noop$1,
+         lineEnd: noop$1,

          polygonStart: function polygonStart() {
          polygonStart: function polygonStart() {

-           areaRingSum = new Adder();
-           areaStream.lineStart = areaRingStart;
-           areaStream.lineEnd = areaRingEnd;
+           areaRingSum$1 = new Adder();
+           areaStream$1.lineStart = areaRingStart$1;
+           areaStream$1.lineEnd = areaRingEnd$1;

          },
          polygonEnd: function polygonEnd() {
          },
          polygonEnd: function polygonEnd() {

-           var areaRing = +areaRingSum;
-           areaSum.add(areaRing < 0 ? tau + areaRing : areaRing);
-           this.lineStart = this.lineEnd = this.point = noop;
+           var areaRing = +areaRingSum$1;
+           areaSum$1.add(areaRing < 0 ? tau + areaRing : areaRing);
+           this.lineStart = this.lineEnd = this.point = noop$1;

          },
          sphere: function sphere() {
          },
          sphere: function sphere() {

-           areaSum.add(tau);
+           areaSum$1.add(tau);

          }
        };
 
          }
        };
 

-       function areaRingStart() {
-         areaStream.point = areaPointFirst;
+       function areaRingStart$1() {
+         areaStream$1.point = areaPointFirst$1;

        }
 
        }
 

-       function areaRingEnd() {
-         areaPoint(lambda00, phi00);
+       function areaRingEnd$1() {
+         areaPoint$1(lambda00$1, phi00$1);

        }
 
        }
 

-       function areaPointFirst(lambda, phi) {
-         areaStream.point = areaPoint;
-         lambda00 = lambda, phi00 = phi;
+       function areaPointFirst$1(lambda, phi) {
+         areaStream$1.point = areaPoint$1;
+         lambda00$1 = lambda, phi00$1 = phi;

          lambda *= radians, phi *= radians;
          lambda *= radians, phi *= radians;

-         lambda0 = lambda, cosPhi0 = cos(phi = phi / 2 + quarterPi), sinPhi0 = sin(phi);
+         lambda0$2 = lambda, cosPhi0$1 = cos(phi = phi / 2 + quarterPi), sinPhi0$1 = sin(phi);

        }
 
        }
 

-       function areaPoint(lambda, phi) {
+       function areaPoint$1(lambda, phi) {

          lambda *= radians, phi *= radians;
          phi = phi / 2 + quarterPi; // half the angular distance from south pole
          // Spherical excess E for a spherical triangle with vertices: south pole,
          // previous point, current point.  Uses a formula derived from Cagnoli’s
          // theorem.  See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2).
 
          lambda *= radians, phi *= radians;
          phi = phi / 2 + quarterPi; // half the angular distance from south pole
          // Spherical excess E for a spherical triangle with vertices: south pole,
          // previous point, current point.  Uses a formula derived from Cagnoli’s
          // theorem.  See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2).
 

-         var dLambda = lambda - lambda0,
+         var dLambda = lambda - lambda0$2,

              sdLambda = dLambda >= 0 ? 1 : -1,
              adLambda = sdLambda * dLambda,
              cosPhi = cos(phi),
              sinPhi = sin(phi),
              sdLambda = dLambda >= 0 ? 1 : -1,
              adLambda = sdLambda * dLambda,
              cosPhi = cos(phi),
              sinPhi = sin(phi),

-             k = sinPhi0 * sinPhi,
-             u = cosPhi0 * cosPhi + k * cos(adLambda),
+             k = sinPhi0$1 * sinPhi,
+             u = cosPhi0$1 * cosPhi + k * cos(adLambda),

              v = k * sdLambda * sin(adLambda);
              v = k * sdLambda * sin(adLambda);

-         areaRingSum.add(atan2(v, u)); // Advance the previous points.
+         areaRingSum$1.add(atan2(v, u)); // Advance the previous points.

 
 

-         lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi;
+         lambda0$2 = lambda, cosPhi0$1 = cosPhi, sinPhi0$1 = sinPhi;

        }
 
        function d3_geoArea (object) {
        }
 
        function d3_geoArea (object) {

-         areaSum = new Adder();
-         d3_geoStream(object, areaStream);
-         return areaSum * 2;
+         areaSum$1 = new Adder();
+         d3_geoStream(object, areaStream$1);
+         return areaSum$1 * 2;

        }
 
        function spherical(cartesian) {
        }
 
        function spherical(cartesian) {


@@ -10040,41 +11091,41 @@
        } // TODO return d
 
        function cartesianNormalizeInPlace(d) {
        } // TODO return d
 
        function cartesianNormalizeInPlace(d) {

-         var l = sqrt$1(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+         var l = sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);

          d[0] /= l, d[1] /= l, d[2] /= l;
        }
 
        var lambda0$1, phi0, lambda1, phi1, // bounds
        lambda2, // previous lambda-coordinate
          d[0] /= l, d[1] /= l, d[2] /= l;
        }
 
        var lambda0$1, phi0, lambda1, phi1, // bounds
        lambda2, // previous lambda-coordinate

-       lambda00$1, phi00$1, // first point
+       lambda00, phi00, // first point

        p0, // previous 3D point
        p0, // previous 3D point

-       deltaSum, ranges, range$1;
-       var boundsStream = {
-         point: boundsPoint,
+       deltaSum, ranges, range;
+       var boundsStream$1 = {
+         point: boundsPoint$1,

          lineStart: boundsLineStart,
          lineEnd: boundsLineEnd,
          polygonStart: function polygonStart() {
          lineStart: boundsLineStart,
          lineEnd: boundsLineEnd,
          polygonStart: function polygonStart() {

-           boundsStream.point = boundsRingPoint;
-           boundsStream.lineStart = boundsRingStart;
-           boundsStream.lineEnd = boundsRingEnd;
+           boundsStream$1.point = boundsRingPoint;
+           boundsStream$1.lineStart = boundsRingStart;
+           boundsStream$1.lineEnd = boundsRingEnd;

            deltaSum = new Adder();
            deltaSum = new Adder();

-           areaStream.polygonStart();
+           areaStream$1.polygonStart();

          },
          polygonEnd: function polygonEnd() {
          },
          polygonEnd: function polygonEnd() {

-           areaStream.polygonEnd();
-           boundsStream.point = boundsPoint;
-           boundsStream.lineStart = boundsLineStart;
-           boundsStream.lineEnd = boundsLineEnd;
-           if (areaRingSum < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);else if (deltaSum > epsilon) phi1 = 90;else if (deltaSum < -epsilon) phi0 = -90;
-           range$1[0] = lambda0$1, range$1[1] = lambda1;
+           areaStream$1.polygonEnd();
+           boundsStream$1.point = boundsPoint$1;
+           boundsStream$1.lineStart = boundsLineStart;
+           boundsStream$1.lineEnd = boundsLineEnd;
+           if (areaRingSum$1 < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);else if (deltaSum > epsilon$1) phi1 = 90;else if (deltaSum < -epsilon$1) phi0 = -90;
+           range[0] = lambda0$1, range[1] = lambda1;

          },
          sphere: function sphere() {
            lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);
          }
        };
 
          },
          sphere: function sphere() {
            lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);
          }
        };
 

-       function boundsPoint(lambda, phi) {
-         ranges.push(range$1 = [lambda0$1 = lambda, lambda1 = lambda]);
+       function boundsPoint$1(lambda, phi) {
+         ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]);

          if (phi < phi0) phi0 = phi;
          if (phi > phi1) phi1 = phi;
        }
          if (phi < phi0) phi0 = phi;
          if (phi > phi1) phi1 = phi;
        }


@@ -10090,15 +11141,15 @@
            inflection = spherical(inflection);
            var delta = lambda - lambda2,
                sign = delta > 0 ? 1 : -1,
            inflection = spherical(inflection);
            var delta = lambda - lambda2,
                sign = delta > 0 ? 1 : -1,

-               lambdai = inflection[0] * degrees * sign,
+               lambdai = inflection[0] * degrees$1 * sign,

                phii,
                antimeridian = abs$2(delta) > 180;
 
            if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
                phii,
                antimeridian = abs$2(delta) > 180;
 
            if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {

-             phii = inflection[1] * degrees;
+             phii = inflection[1] * degrees$1;

              if (phii > phi1) phi1 = phii;
            } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
              if (phii > phi1) phi1 = phii;
            } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {

-             phii = -inflection[1] * degrees;
+             phii = -inflection[1] * degrees$1;

              if (phii < phi0) phi0 = phii;
            } else {
              if (phi < phi0) phi0 = phi;
              if (phii < phi0) phi0 = phii;
            } else {
              if (phi < phi0) phi0 = phi;


@@ -10124,7 +11175,7 @@
              }
            }
          } else {
              }
            }
          } else {

-           ranges.push(range$1 = [lambda0$1 = lambda, lambda1 = lambda]);
+           ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]);

          }
 
          if (phi < phi0) phi0 = phi;
          }
 
          if (phi < phi0) phi0 = phi;


@@ -10133,12 +11184,12 @@
        }
 
        function boundsLineStart() {
        }
 
        function boundsLineStart() {

-         boundsStream.point = linePoint;
+         boundsStream$1.point = linePoint;

        }
 
        function boundsLineEnd() {
        }
 
        function boundsLineEnd() {

-         range$1[0] = lambda0$1, range$1[1] = lambda1;
-         boundsStream.point = boundsPoint;
+         range[0] = lambda0$1, range[1] = lambda1;
+         boundsStream$1.point = boundsPoint$1;

          p0 = null;
        }
 
          p0 = null;
        }
 


@@ -10147,22 +11198,22 @@
            var delta = lambda - lambda2;
            deltaSum.add(abs$2(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta);
          } else {
            var delta = lambda - lambda2;
            deltaSum.add(abs$2(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta);
          } else {

-           lambda00$1 = lambda, phi00$1 = phi;
+           lambda00 = lambda, phi00 = phi;

          }
 
          }
 

-         areaStream.point(lambda, phi);
+         areaStream$1.point(lambda, phi);

          linePoint(lambda, phi);
        }
 
        function boundsRingStart() {
          linePoint(lambda, phi);
        }
 
        function boundsRingStart() {

-         areaStream.lineStart();
+         areaStream$1.lineStart();

        }
 
        function boundsRingEnd() {
        }
 
        function boundsRingEnd() {

-         boundsRingPoint(lambda00$1, phi00$1);
-         areaStream.lineEnd();
-         if (abs$2(deltaSum) > epsilon) lambda0$1 = -(lambda1 = 180);
-         range$1[0] = lambda0$1, range$1[1] = lambda1;
+         boundsRingPoint(lambda00, phi00);
+         areaStream$1.lineEnd();
+         if (abs$2(deltaSum) > epsilon$1) lambda0$1 = -(lambda1 = 180);
+         range[0] = lambda0$1, range[1] = lambda1;

          p0 = null;
        } // Finds the left-right distance between two longitudes.
        // This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want
          p0 = null;
        } // Finds the left-right distance between two longitudes.
        // This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want


@@ -10185,7 +11236,7 @@
          var i, n, a, b, merged, deltaMax, delta;
          phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity);
          ranges = [];
          var i, n, a, b, merged, deltaMax, delta;
          phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity);
          ranges = [];

-         d3_geoStream(feature, boundsStream); // First, sort ranges by their minimum longitudes.
+         d3_geoStream(feature, boundsStream$1); // First, sort ranges by their minimum longitudes.

 
          if (n = ranges.length) {
            ranges.sort(rangeCompare); // Then, merge any ranges that overlap.
 
          if (n = ranges.length) {
            ranges.sort(rangeCompare); // Then, merge any ranges that overlap.


@@ -10209,142 +11260,10 @@
            }
          }
 
            }
          }
 

-         ranges = range$1 = null;
+         ranges = range = null;

          return lambda0$1 === Infinity || phi0 === Infinity ? [[NaN, NaN], [NaN, NaN]] : [[lambda0$1, phi0], [lambda1, phi1]];
        }
 
          return lambda0$1 === Infinity || phi0 === Infinity ? [[NaN, NaN], [NaN, NaN]] : [[lambda0$1, phi0], [lambda1, phi1]];
        }
 

-       var W0, W1, X0, Y0, Z0, X1, Y1, Z1, X2, Y2, Z2, lambda00$2, phi00$2, // first point
-       x0, y0, z0; // previous point
-
-       var centroidStream = {
-         sphere: noop,
-         point: centroidPoint,
-         lineStart: centroidLineStart,
-         lineEnd: centroidLineEnd,
-         polygonStart: function polygonStart() {
-           centroidStream.lineStart = centroidRingStart;
-           centroidStream.lineEnd = centroidRingEnd;
-         },
-         polygonEnd: function polygonEnd() {
-           centroidStream.lineStart = centroidLineStart;
-           centroidStream.lineEnd = centroidLineEnd;
-         }
-       }; // Arithmetic mean of Cartesian vectors.
-
-       function centroidPoint(lambda, phi) {
-         lambda *= radians, phi *= radians;
-         var cosPhi = cos(phi);
-         centroidPointCartesian(cosPhi * cos(lambda), cosPhi * sin(lambda), sin(phi));
-       }
-
-       function centroidPointCartesian(x, y, z) {
-         ++W0;
-         X0 += (x - X0) / W0;
-         Y0 += (y - Y0) / W0;
-         Z0 += (z - Z0) / W0;
-       }
-
-       function centroidLineStart() {
-         centroidStream.point = centroidLinePointFirst;
-       }
-
-       function centroidLinePointFirst(lambda, phi) {
-         lambda *= radians, phi *= radians;
-         var cosPhi = cos(phi);
-         x0 = cosPhi * cos(lambda);
-         y0 = cosPhi * sin(lambda);
-         z0 = sin(phi);
-         centroidStream.point = centroidLinePoint;
-         centroidPointCartesian(x0, y0, z0);
-       }
-
-       function centroidLinePoint(lambda, phi) {
-         lambda *= radians, phi *= radians;
-         var cosPhi = cos(phi),
-             x = cosPhi * cos(lambda),
-             y = cosPhi * sin(lambda),
-             z = sin(phi),
-             w = atan2(sqrt$1((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
-         W1 += w;
-         X1 += w * (x0 + (x0 = x));
-         Y1 += w * (y0 + (y0 = y));
-         Z1 += w * (z0 + (z0 = z));
-         centroidPointCartesian(x0, y0, z0);
-       }
-
-       function centroidLineEnd() {
-         centroidStream.point = centroidPoint;
-       } // See J. E. Brock, The Inertia Tensor for a Spherical Triangle,
-       // J. Applied Mechanics 42, 239 (1975).
-
-
-       function centroidRingStart() {
-         centroidStream.point = centroidRingPointFirst;
-       }
-
-       function centroidRingEnd() {
-         centroidRingPoint(lambda00$2, phi00$2);
-         centroidStream.point = centroidPoint;
-       }
-
-       function centroidRingPointFirst(lambda, phi) {
-         lambda00$2 = lambda, phi00$2 = phi;
-         lambda *= radians, phi *= radians;
-         centroidStream.point = centroidRingPoint;
-         var cosPhi = cos(phi);
-         x0 = cosPhi * cos(lambda);
-         y0 = cosPhi * sin(lambda);
-         z0 = sin(phi);
-         centroidPointCartesian(x0, y0, z0);
-       }
-
-       function centroidRingPoint(lambda, phi) {
-         lambda *= radians, phi *= radians;
-         var cosPhi = cos(phi),
-             x = cosPhi * cos(lambda),
-             y = cosPhi * sin(lambda),
-             z = sin(phi),
-             cx = y0 * z - z0 * y,
-             cy = z0 * x - x0 * z,
-             cz = x0 * y - y0 * x,
-             m = hypot(cx, cy, cz),
-             w = asin(m),
-             // line weight = angle
-         v = m && -w / m; // area weight multiplier
-
-         X2.add(v * cx);
-         Y2.add(v * cy);
-         Z2.add(v * cz);
-         W1 += w;
-         X1 += w * (x0 + (x0 = x));
-         Y1 += w * (y0 + (y0 = y));
-         Z1 += w * (z0 + (z0 = z));
-         centroidPointCartesian(x0, y0, z0);
-       }
-
-       function d3_geoCentroid (object) {
-         W0 = W1 = X0 = Y0 = Z0 = X1 = Y1 = Z1 = 0;
-         X2 = new Adder();
-         Y2 = new Adder();
-         Z2 = new Adder();
-         d3_geoStream(object, centroidStream);
-         var x = +X2,
-             y = +Y2,
-             z = +Z2,
-             m = hypot(x, y, z); // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid.
-
-         if (m < epsilon2) {
-           x = X1, y = Y1, z = Z1; // If the feature has zero length, fall back to arithmetic mean of point vectors.
-
-           if (W1 < epsilon) x = X0, y = Y0, z = Z0;
-           m = hypot(x, y, z); // If the feature still has an undefined ccentroid, then return.
-
-           if (m < epsilon2) return [NaN, NaN];
-         }
-
-         return [atan2(y, x) * degrees, asin(z / m) * degrees];
-       }
-

        function compose (a, b) {
          function compose(x, y) {
            return x = a(x, y), b(x[0], x[1]);
        function compose (a, b) {
          function compose(x, y) {
            return x = a(x, y), b(x[0], x[1]);


@@ -10409,12 +11328,12 @@
 
          function forward(coordinates) {
            coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians);
 
          function forward(coordinates) {
            coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians);

-           return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+           return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates;

          }
 
          forward.invert = function (coordinates) {
            coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians);
          }
 
          forward.invert = function (coordinates) {
            coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians);

-           return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+           return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates;

          };
 
          return forward;
          };
 
          return forward;


@@ -10445,7 +11364,7 @@
          point = cartesian(point), point[0] -= cosRadius;
          cartesianNormalizeInPlace(point);
          var radius = acos(-point[1]);
          point = cartesian(point), point[0] -= cosRadius;
          cartesianNormalizeInPlace(point);
          var radius = acos(-point[1]);

-         return ((-point[2] < 0 ? -radius : radius) + tau - epsilon) % tau;
+         return ((-point[2] < 0 ? -radius : radius) + tau - epsilon$1) % tau;

        }
 
        function clipBuffer () {
        }
 
        function clipBuffer () {


@@ -10458,7 +11377,7 @@
            lineStart: function lineStart() {
              lines.push(line = []);
            },
            lineStart: function lineStart() {
              lines.push(line = []);
            },

-           lineEnd: noop,
+           lineEnd: noop$1,

            rejoin: function rejoin() {
              if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
            },
            rejoin: function rejoin() {
              if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
            },


@@ -10472,7 +11391,7 @@
        }
 
        function pointEqual (a, b) {
        }
 
        function pointEqual (a, b) {

-         return abs$2(a[0] - b[0]) < epsilon && abs$2(a[1] - b[1]) < epsilon;
+         return abs$2(a[0] - b[0]) < epsilon$1 && abs$2(a[1] - b[1]) < epsilon$1;

        }
 
        function Intersection(point, points, other, entry) {
        }
 
        function Intersection(point, points, other, entry) {


@@ -10515,7 +11434,7 @@
              } // handle degenerate cases by moving the point
 
 
              } // handle degenerate cases by moving the point
 
 

-             p1[0] += 2 * epsilon;
+             p1[0] += 2 * epsilon$1;

            }
 
            subject.push(x = new Intersection(p0, segment, null, true));
            }
 
            subject.push(x = new Intersection(p0, segment, null, true));


@@ -10613,7 +11532,7 @@
              angle = 0,
              winding = 0;
          var sum = new Adder();
              angle = 0,
              winding = 0;
          var sum = new Adder();

-         if (sinPhi === 1) phi = halfPi + epsilon;else if (sinPhi === -1) phi = -halfPi - epsilon;
+         if (sinPhi === 1) phi = halfPi + epsilon$1;else if (sinPhi === -1) phi = -halfPi - epsilon$1;

 
          for (var i = 0, n = polygon.length; i < n; ++i) {
            if (!(m = (ring = polygon[i]).length)) continue;
 
          for (var i = 0, n = polygon.length; i < n; ++i) {
            if (!(m = (ring = polygon[i]).length)) continue;


@@ -10664,7 +11583,7 @@
          // same side as the South pole.
 
 
          // same side as the South pole.
 
 

-         return (angle < -epsilon || angle < epsilon && sum < -epsilon2) ^ winding & 1;
+         return (angle < -epsilon$1 || angle < epsilon$1 && sum < -epsilon2$1) ^ winding & 1;

        }
 
        function clip (pointVisible, clipLine, interpolate, start) {
        }
 
        function clip (pointVisible, clipLine, interpolate, start) {


@@ -10691,7 +11610,7 @@
                clip.point = point;
                clip.lineStart = lineStart;
                clip.lineEnd = lineEnd;
                clip.point = point;
                clip.lineStart = lineStart;
                clip.lineEnd = lineEnd;

-               segments = merge(segments);
+               segments = merge$4(segments);

                var startInside = polygonContains(polygon, start);
 
                if (segments.length) {
                var startInside = polygonContains(polygon, start);
 
                if (segments.length) {


@@ -10793,7 +11712,7 @@
 
 
        function compareIntersection(a, b) {
 
 
        function compareIntersection(a, b) {

-         return ((a = a.x)[0] < 0 ? a[1] - halfPi - epsilon : halfPi - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfPi - epsilon : halfPi - b[1]);
+         return ((a = a.x)[0] < 0 ? a[1] - halfPi - epsilon$1 : halfPi - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfPi - epsilon$1 : halfPi - b[1]);

        }
 
        var clipAntimeridian = clip(function () {
        }
 
        var clipAntimeridian = clip(function () {


@@ -10818,7 +11737,7 @@
              var sign1 = lambda1 > 0 ? pi : -pi,
                  delta = abs$2(lambda1 - lambda0);
 
              var sign1 = lambda1 > 0 ? pi : -pi,
                  delta = abs$2(lambda1 - lambda0);
 

-             if (abs$2(delta - pi) < epsilon) {
+             if (abs$2(delta - pi) < epsilon$1) {

                // line crosses a pole
                stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi : -halfPi);
                stream.point(sign0, phi0);
                // line crosses a pole
                stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi : -halfPi);
                stream.point(sign0, phi0);


@@ -10829,9 +11748,9 @@
                _clean = 0;
              } else if (sign0 !== sign1 && delta >= pi) {
                // line crosses antimeridian
                _clean = 0;
              } else if (sign0 !== sign1 && delta >= pi) {
                // line crosses antimeridian

-               if (abs$2(lambda0 - sign0) < epsilon) lambda0 -= sign0 * epsilon; // handle degeneracies
+               if (abs$2(lambda0 - sign0) < epsilon$1) lambda0 -= sign0 * epsilon$1; // handle degeneracies

 
 

-               if (abs$2(lambda1 - sign1) < epsilon) lambda1 -= sign1 * epsilon;
+               if (abs$2(lambda1 - sign1) < epsilon$1) lambda1 -= sign1 * epsilon$1;

                phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1);
                stream.point(sign0, phi0);
                stream.lineEnd();
                phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1);
                stream.point(sign0, phi0);
                stream.lineEnd();


@@ -10857,7 +11776,7 @@
          var cosPhi0,
              cosPhi1,
              sinLambda0Lambda1 = sin(lambda0 - lambda1);
          var cosPhi0,
              cosPhi1,
              sinLambda0Lambda1 = sin(lambda0 - lambda1);

-         return abs$2(sinLambda0Lambda1) > epsilon ? atan((sin(phi0) * (cosPhi1 = cos(phi1)) * sin(lambda1) - sin(phi1) * (cosPhi0 = cos(phi0)) * sin(lambda0)) / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) : (phi0 + phi1) / 2;
+         return abs$2(sinLambda0Lambda1) > epsilon$1 ? atan((sin(phi0) * (cosPhi1 = cos(phi1)) * sin(lambda1) - sin(phi1) * (cosPhi0 = cos(phi0)) * sin(lambda0)) / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) : (phi0 + phi1) / 2;

        }
 
        function clipAntimeridianInterpolate(from, to, direction, stream) {
        }
 
        function clipAntimeridianInterpolate(from, to, direction, stream) {


@@ -10874,7 +11793,7 @@
            stream.point(-pi, -phi);
            stream.point(-pi, 0);
            stream.point(-pi, phi);
            stream.point(-pi, -phi);
            stream.point(-pi, 0);
            stream.point(-pi, phi);

-         } else if (abs$2(from[0] - to[0]) > epsilon) {
+         } else if (abs$2(from[0] - to[0]) > epsilon$1) {

            var lambda = from[0] < to[0] ? pi : -pi;
            phi = direction * lambda / 2;
            stream.point(-lambda, phi);
            var lambda = from[0] < to[0] ? pi : -pi;
            phi = direction * lambda / 2;
            stream.point(-lambda, phi);


@@ -10889,7 +11808,7 @@
          var cr = cos(radius),
              delta = 6 * radians,
              smallRadius = cr > 0,
          var cr = cos(radius),
              delta = 6 * radians,
              smallRadius = cr > 0,

-             notHemisphere = abs$2(cr) > epsilon; // TODO optimise for this common case
+             notHemisphere = abs$2(cr) > epsilon$1; // TODO optimise for this common case

 
          function interpolate(from, to, direction, stream) {
            circleStream(stream, radius, delta, direction, from, to);
 
          function interpolate(from, to, direction, stream) {
            circleStream(stream, radius, delta, direction, from, to);


@@ -11010,7 +11929,7 @@
                uu = cartesianDot(u, u),
                t2 = w * w - uu * (cartesianDot(A, A) - 1);
            if (t2 < 0) return;
                uu = cartesianDot(u, u),
                t2 = w * w - uu * (cartesianDot(A, A) - 1);
            if (t2 < 0) return;

-           var t = sqrt$1(t2),
+           var t = sqrt(t2),

                q = cartesianScale(u, (-w - t) / uu);
            cartesianAddInPlace(q, A);
            q = spherical(q);
                q = cartesianScale(u, (-w - t) / uu);
            cartesianAddInPlace(q, A);
            q = spherical(q);


@@ -11023,11 +11942,11 @@
                z;
            if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z;
            var delta = lambda1 - lambda0,
                z;
            if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z;
            var delta = lambda1 - lambda0,

-               polar = abs$2(delta - pi) < epsilon,
-               meridian = polar || delta < epsilon;
+               polar = abs$2(delta - pi) < epsilon$1,
+               meridian = polar || delta < epsilon$1;

            if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; // Check that the first point is between a and b.
 
            if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; // Check that the first point is between a and b.
 

-           if (meridian ? polar ? phi0 + phi1 > 0 ^ q[1] < (abs$2(q[0] - lambda0) < epsilon ? phi0 : phi1) : phi0 <= q[1] && q[1] <= phi1 : delta > pi ^ (lambda0 <= q[0] && q[0] <= lambda1)) {
+           if (meridian ? polar ? phi0 + phi1 > 0 ^ q[1] < (abs$2(q[0] - lambda0) < epsilon$1 ? phi0 : phi1) : phi0 <= q[1] && q[1] <= phi1 : delta > pi ^ (lambda0 <= q[0] && q[0] <= lambda1)) {

              var q1 = cartesianScale(u, (-w + t) / uu);
              cartesianAddInPlace(q1, A);
              return [q, spherical(q1)];
              var q1 = cartesianScale(u, (-w + t) / uu);
              cartesianAddInPlace(q1, A);
              return [q, spherical(q1)];


@@ -11137,7 +12056,7 @@
          }
 
          function corner(p, direction) {
          }
 
          function corner(p, direction) {

-           return abs$2(p[0] - x0) < epsilon ? direction > 0 ? 0 : 3 : abs$2(p[0] - x1) < epsilon ? direction > 0 ? 2 : 1 : abs$2(p[1] - y0) < epsilon ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon
+           return abs$2(p[0] - x0) < epsilon$1 ? direction > 0 ? 0 : 3 : abs$2(p[0] - x1) < epsilon$1 ? direction > 0 ? 2 : 1 : abs$2(p[1] - y0) < epsilon$1 ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon

          }
 
          function compareIntersection(a, b) {
          }
 
          function compareIntersection(a, b) {


@@ -11204,7 +12123,7 @@
            function polygonEnd() {
              var startInside = polygonInside(),
                  cleanInside = clean && startInside,
            function polygonEnd() {
              var startInside = polygonInside(),
                  cleanInside = clean && startInside,

-                 visible = (segments = merge(segments)).length;
+                 visible = (segments = merge$4(segments)).length;

 
              if (cleanInside || visible) {
                stream.polygonStart();
 
              if (cleanInside || visible) {
                stream.polygonStart();


@@ -11288,109 +12207,109 @@
          };
        }
 
          };
        }
 

-       var lengthSum, lambda0$2, sinPhi0$1, cosPhi0$1;
-       var lengthStream = {
-         sphere: noop,
-         point: noop,
+       var lengthSum$1, lambda0, sinPhi0, cosPhi0;
+       var lengthStream$1 = {
+         sphere: noop$1,
+         point: noop$1,

          lineStart: lengthLineStart,
          lineStart: lengthLineStart,

-         lineEnd: noop,
-         polygonStart: noop,
-         polygonEnd: noop
+         lineEnd: noop$1,
+         polygonStart: noop$1,
+         polygonEnd: noop$1

        };
 
        function lengthLineStart() {
        };
 
        function lengthLineStart() {

-         lengthStream.point = lengthPointFirst;
-         lengthStream.lineEnd = lengthLineEnd;
+         lengthStream$1.point = lengthPointFirst$1;
+         lengthStream$1.lineEnd = lengthLineEnd;

        }
 
        function lengthLineEnd() {
        }
 
        function lengthLineEnd() {

-         lengthStream.point = lengthStream.lineEnd = noop;
+         lengthStream$1.point = lengthStream$1.lineEnd = noop$1;

        }
 
        }
 

-       function lengthPointFirst(lambda, phi) {
+       function lengthPointFirst$1(lambda, phi) {

          lambda *= radians, phi *= radians;
          lambda *= radians, phi *= radians;

-         lambda0$2 = lambda, sinPhi0$1 = sin(phi), cosPhi0$1 = cos(phi);
-         lengthStream.point = lengthPoint;
+         lambda0 = lambda, sinPhi0 = sin(phi), cosPhi0 = cos(phi);
+         lengthStream$1.point = lengthPoint$1;

        }
 
        }
 

-       function lengthPoint(lambda, phi) {
+       function lengthPoint$1(lambda, phi) {

          lambda *= radians, phi *= radians;
          var sinPhi = sin(phi),
              cosPhi = cos(phi),
          lambda *= radians, phi *= radians;
          var sinPhi = sin(phi),
              cosPhi = cos(phi),

-             delta = abs$2(lambda - lambda0$2),
+             delta = abs$2(lambda - lambda0),

              cosDelta = cos(delta),
              sinDelta = sin(delta),
              x = cosPhi * sinDelta,
              cosDelta = cos(delta),
              sinDelta = sin(delta),
              x = cosPhi * sinDelta,

-             y = cosPhi0$1 * sinPhi - sinPhi0$1 * cosPhi * cosDelta,
-             z = sinPhi0$1 * sinPhi + cosPhi0$1 * cosPhi * cosDelta;
-         lengthSum.add(atan2(sqrt$1(x * x + y * y), z));
-         lambda0$2 = lambda, sinPhi0$1 = sinPhi, cosPhi0$1 = cosPhi;
+             y = cosPhi0 * sinPhi - sinPhi0 * cosPhi * cosDelta,
+             z = sinPhi0 * sinPhi + cosPhi0 * cosPhi * cosDelta;
+         lengthSum$1.add(atan2(sqrt(x * x + y * y), z));
+         lambda0 = lambda, sinPhi0 = sinPhi, cosPhi0 = cosPhi;

        }
 
        function d3_geoLength (object) {
        }
 
        function d3_geoLength (object) {

-         lengthSum = new Adder();
-         d3_geoStream(object, lengthStream);
-         return +lengthSum;
+         lengthSum$1 = new Adder();
+         d3_geoStream(object, lengthStream$1);
+         return +lengthSum$1;

        }
 
        }
 

-       var identity = (function (x) {
+       var identity$4 = (function (x) {

          return x;
        });
 
          return x;
        });
 

-       var areaSum$1 = new Adder(),
-           areaRingSum$1 = new Adder(),
-           x00,
-           y00,
-           x0$1,
-           y0$1;
-       var areaStream$1 = {
-         point: noop,
-         lineStart: noop,
-         lineEnd: noop,
+       var areaSum = new Adder(),
+           areaRingSum = new Adder(),
+           x00$2,
+           y00$2,
+           x0$3,
+           y0$3;
+       var areaStream = {
+         point: noop$1,
+         lineStart: noop$1,
+         lineEnd: noop$1,

          polygonStart: function polygonStart() {
          polygonStart: function polygonStart() {

-           areaStream$1.lineStart = areaRingStart$1;
-           areaStream$1.lineEnd = areaRingEnd$1;
+           areaStream.lineStart = areaRingStart;
+           areaStream.lineEnd = areaRingEnd;

          },
          polygonEnd: function polygonEnd() {
          },
          polygonEnd: function polygonEnd() {

-           areaStream$1.lineStart = areaStream$1.lineEnd = areaStream$1.point = noop;
-           areaSum$1.add(abs$2(areaRingSum$1));
-           areaRingSum$1 = new Adder();
+           areaStream.lineStart = areaStream.lineEnd = areaStream.point = noop$1;
+           areaSum.add(abs$2(areaRingSum));
+           areaRingSum = new Adder();

          },
          result: function result() {
          },
          result: function result() {

-           var area = areaSum$1 / 2;
-           areaSum$1 = new Adder();
+           var area = areaSum / 2;
+           areaSum = new Adder();

            return area;
          }
        };
 
            return area;
          }
        };
 

-       function areaRingStart$1() {
-         areaStream$1.point = areaPointFirst$1;
+       function areaRingStart() {
+         areaStream.point = areaPointFirst;

        }
 
        }
 

-       function areaPointFirst$1(x, y) {
-         areaStream$1.point = areaPoint$1;
-         x00 = x0$1 = x, y00 = y0$1 = y;
+       function areaPointFirst(x, y) {
+         areaStream.point = areaPoint;
+         x00$2 = x0$3 = x, y00$2 = y0$3 = y;

        }
 
        }
 

-       function areaPoint$1(x, y) {
-         areaRingSum$1.add(y0$1 * x - x0$1 * y);
-         x0$1 = x, y0$1 = y;
+       function areaPoint(x, y) {
+         areaRingSum.add(y0$3 * x - x0$3 * y);
+         x0$3 = x, y0$3 = y;

        }
 
        }
 

-       function areaRingEnd$1() {
-         areaPoint$1(x00, y00);
+       function areaRingEnd() {
+         areaPoint(x00$2, y00$2);

        }
 
        var x0$2 = Infinity,
            y0$2 = x0$2,
            x1 = -x0$2,
            y1 = x1;
        }
 
        var x0$2 = Infinity,
            y0$2 = x0$2,
            x1 = -x0$2,
            y1 = x1;

-       var boundsStream$1 = {
-         point: boundsPoint$1,
-         lineStart: noop,
-         lineEnd: noop,
-         polygonStart: noop,
-         polygonEnd: noop,
+       var boundsStream = {
+         point: boundsPoint,
+         lineStart: noop$1,
+         lineEnd: noop$1,
+         polygonStart: noop$1,
+         polygonEnd: noop$1,

          result: function result() {
            var bounds = [[x0$2, y0$2], [x1, y1]];
            x1 = y1 = -(y0$2 = x0$2 = Infinity);
          result: function result() {
            var bounds = [[x0$2, y0$2], [x1, y1]];
            x1 = y1 = -(y0$2 = x0$2 = Infinity);


@@ -11398,100 +12317,100 @@
          }
        };
 
          }
        };
 

-       function boundsPoint$1(x, y) {
+       function boundsPoint(x, y) {

          if (x < x0$2) x0$2 = x;
          if (x > x1) x1 = x;
          if (y < y0$2) y0$2 = y;
          if (y > y1) y1 = y;
        }
 
          if (x < x0$2) x0$2 = x;
          if (x > x1) x1 = x;
          if (y < y0$2) y0$2 = y;
          if (y > y1) y1 = y;
        }
 

-       var X0$1 = 0,
-           Y0$1 = 0,
-           Z0$1 = 0,
-           X1$1 = 0,
-           Y1$1 = 0,
-           Z1$1 = 0,
-           X2$1 = 0,
-           Y2$1 = 0,
-           Z2$1 = 0,
+       var X0 = 0,
+           Y0 = 0,
+           Z0 = 0,
+           X1 = 0,
+           Y1 = 0,
+           Z1 = 0,
+           X2 = 0,
+           Y2 = 0,
+           Z2 = 0,

            x00$1,
            y00$1,
            x00$1,
            y00$1,

-           x0$3,
-           y0$3;
-       var centroidStream$1 = {
-         point: centroidPoint$1,
-         lineStart: centroidLineStart$1,
-         lineEnd: centroidLineEnd$1,
+           x0$1,
+           y0$1;
+       var centroidStream = {
+         point: centroidPoint,
+         lineStart: centroidLineStart,
+         lineEnd: centroidLineEnd,

          polygonStart: function polygonStart() {
          polygonStart: function polygonStart() {

-           centroidStream$1.lineStart = centroidRingStart$1;
-           centroidStream$1.lineEnd = centroidRingEnd$1;
+           centroidStream.lineStart = centroidRingStart;
+           centroidStream.lineEnd = centroidRingEnd;

          },
          polygonEnd: function polygonEnd() {
          },
          polygonEnd: function polygonEnd() {

-           centroidStream$1.point = centroidPoint$1;
-           centroidStream$1.lineStart = centroidLineStart$1;
-           centroidStream$1.lineEnd = centroidLineEnd$1;
+           centroidStream.point = centroidPoint;
+           centroidStream.lineStart = centroidLineStart;
+           centroidStream.lineEnd = centroidLineEnd;

          },
          result: function result() {
          },
          result: function result() {

-           var centroid = Z2$1 ? [X2$1 / Z2$1, Y2$1 / Z2$1] : Z1$1 ? [X1$1 / Z1$1, Y1$1 / Z1$1] : Z0$1 ? [X0$1 / Z0$1, Y0$1 / Z0$1] : [NaN, NaN];
-           X0$1 = Y0$1 = Z0$1 = X1$1 = Y1$1 = Z1$1 = X2$1 = Y2$1 = Z2$1 = 0;
+           var centroid = Z2 ? [X2 / Z2, Y2 / Z2] : Z1 ? [X1 / Z1, Y1 / Z1] : Z0 ? [X0 / Z0, Y0 / Z0] : [NaN, NaN];
+           X0 = Y0 = Z0 = X1 = Y1 = Z1 = X2 = Y2 = Z2 = 0;

            return centroid;
          }
        };
 
            return centroid;
          }
        };
 

-       function centroidPoint$1(x, y) {
-         X0$1 += x;
-         Y0$1 += y;
-         ++Z0$1;
+       function centroidPoint(x, y) {
+         X0 += x;
+         Y0 += y;
+         ++Z0;

        }
 
        }
 

-       function centroidLineStart$1() {
-         centroidStream$1.point = centroidPointFirstLine;
+       function centroidLineStart() {
+         centroidStream.point = centroidPointFirstLine;

        }
 
        function centroidPointFirstLine(x, y) {
        }
 
        function centroidPointFirstLine(x, y) {

-         centroidStream$1.point = centroidPointLine;
-         centroidPoint$1(x0$3 = x, y0$3 = y);
+         centroidStream.point = centroidPointLine;
+         centroidPoint(x0$1 = x, y0$1 = y);

        }
 
        function centroidPointLine(x, y) {
        }
 
        function centroidPointLine(x, y) {

-         var dx = x - x0$3,
-             dy = y - y0$3,
-             z = sqrt$1(dx * dx + dy * dy);
-         X1$1 += z * (x0$3 + x) / 2;
-         Y1$1 += z * (y0$3 + y) / 2;
-         Z1$1 += z;
-         centroidPoint$1(x0$3 = x, y0$3 = y);
+         var dx = x - x0$1,
+             dy = y - y0$1,
+             z = sqrt(dx * dx + dy * dy);
+         X1 += z * (x0$1 + x) / 2;
+         Y1 += z * (y0$1 + y) / 2;
+         Z1 += z;
+         centroidPoint(x0$1 = x, y0$1 = y);

        }
 
        }
 

-       function centroidLineEnd$1() {
-         centroidStream$1.point = centroidPoint$1;
+       function centroidLineEnd() {
+         centroidStream.point = centroidPoint;

        }
 
        }
 

-       function centroidRingStart$1() {
-         centroidStream$1.point = centroidPointFirstRing;
+       function centroidRingStart() {
+         centroidStream.point = centroidPointFirstRing;

        }
 
        }
 

-       function centroidRingEnd$1() {
+       function centroidRingEnd() {

          centroidPointRing(x00$1, y00$1);
        }
 
        function centroidPointFirstRing(x, y) {
          centroidPointRing(x00$1, y00$1);
        }
 
        function centroidPointFirstRing(x, y) {

-         centroidStream$1.point = centroidPointRing;
-         centroidPoint$1(x00$1 = x0$3 = x, y00$1 = y0$3 = y);
+         centroidStream.point = centroidPointRing;
+         centroidPoint(x00$1 = x0$1 = x, y00$1 = y0$1 = y);

        }
 
        function centroidPointRing(x, y) {
        }
 
        function centroidPointRing(x, y) {

-         var dx = x - x0$3,
-             dy = y - y0$3,
-             z = sqrt$1(dx * dx + dy * dy);
-         X1$1 += z * (x0$3 + x) / 2;
-         Y1$1 += z * (y0$3 + y) / 2;
-         Z1$1 += z;
-         z = y0$3 * x - x0$3 * y;
-         X2$1 += z * (x0$3 + x);
-         Y2$1 += z * (y0$3 + y);
-         Z2$1 += z * 3;
-         centroidPoint$1(x0$3 = x, y0$3 = y);
+         var dx = x - x0$1,
+             dy = y - y0$1,
+             z = sqrt(dx * dx + dy * dy);
+         X1 += z * (x0$1 + x) / 2;
+         Y1 += z * (y0$1 + y) / 2;
+         Z1 += z;
+         z = y0$1 * x - x0$1 * y;
+         X2 += z * (x0$1 + x);
+         Y2 += z * (y0$1 + y);
+         Z2 += z * 3;
+         centroidPoint(x0$1 = x, y0$1 = y);

        }
 
        function PathContext(context) {
        }
 
        function PathContext(context) {


@@ -11542,23 +12461,23 @@
                }
            }
          },
                }
            }
          },

-         result: noop
+         result: noop$1

        };
 
        };
 

-       var lengthSum$1 = new Adder(),
+       var lengthSum = new Adder(),

            lengthRing,
            lengthRing,

-           x00$2,
-           y00$2,
-           x0$4,
-           y0$4;
-       var lengthStream$1 = {
-         point: noop,
+           x00,
+           y00,
+           x0,
+           y0;
+       var lengthStream = {
+         point: noop$1,

          lineStart: function lineStart() {
          lineStart: function lineStart() {

-           lengthStream$1.point = lengthPointFirst$1;
+           lengthStream.point = lengthPointFirst;

          },
          lineEnd: function lineEnd() {
          },
          lineEnd: function lineEnd() {

-           if (lengthRing) lengthPoint$1(x00$2, y00$2);
-           lengthStream$1.point = noop;
+           if (lengthRing) lengthPoint(x00, y00);
+           lengthStream.point = noop$1;

          },
          polygonStart: function polygonStart() {
            lengthRing = true;
          },
          polygonStart: function polygonStart() {
            lengthRing = true;


@@ -11567,21 +12486,21 @@
            lengthRing = null;
          },
          result: function result() {
            lengthRing = null;
          },
          result: function result() {

-           var length = +lengthSum$1;
-           lengthSum$1 = new Adder();
+           var length = +lengthSum;
+           lengthSum = new Adder();

            return length;
          }
        };
 
            return length;
          }
        };
 

-       function lengthPointFirst$1(x, y) {
-         lengthStream$1.point = lengthPoint$1;
-         x00$2 = x0$4 = x, y00$2 = y0$4 = y;
+       function lengthPointFirst(x, y) {
+         lengthStream.point = lengthPoint;
+         x00 = x0 = x, y00 = y0 = y;

        }
 
        }
 

-       function lengthPoint$1(x, y) {
-         x0$4 -= x, y0$4 -= y;
-         lengthSum$1.add(sqrt$1(x0$4 * x0$4 + y0$4 * y0$4));
-         x0$4 = x, y0$4 = y;
+       function lengthPoint(x, y) {
+         x0 -= x, y0 -= y;
+         lengthSum.add(sqrt(x0 * x0 + y0 * y0));
+         x0 = x, y0 = y;

        }
 
        function PathString() {
        }
 
        function PathString() {


@@ -11665,27 +12584,27 @@
          }
 
          path.area = function (object) {
          }
 
          path.area = function (object) {

-           d3_geoStream(object, projectionStream(areaStream$1));
-           return areaStream$1.result();
+           d3_geoStream(object, projectionStream(areaStream));
+           return areaStream.result();

          };
 
          path.measure = function (object) {
          };
 
          path.measure = function (object) {

-           d3_geoStream(object, projectionStream(lengthStream$1));
-           return lengthStream$1.result();
+           d3_geoStream(object, projectionStream(lengthStream));
+           return lengthStream.result();

          };
 
          path.bounds = function (object) {
          };
 
          path.bounds = function (object) {

-           d3_geoStream(object, projectionStream(boundsStream$1));
-           return boundsStream$1.result();
+           d3_geoStream(object, projectionStream(boundsStream));
+           return boundsStream.result();

          };
 
          path.centroid = function (object) {
          };
 
          path.centroid = function (object) {

-           d3_geoStream(object, projectionStream(centroidStream$1));
-           return centroidStream$1.result();
+           d3_geoStream(object, projectionStream(centroidStream));
+           return centroidStream.result();

          };
 
          path.projection = function (_) {
          };
 
          path.projection = function (_) {

-           return arguments.length ? (projectionStream = _ == null ? (projection = null, identity) : (projection = _).stream, path) : projection;
+           return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$4) : (projection = _).stream, path) : projection;

          };
 
          path.context = function (_) {
          };
 
          path.context = function (_) {


@@ -11706,10 +12625,10 @@
 
        function d3_geoTransform (methods) {
          return {
 
        function d3_geoTransform (methods) {
          return {

-           stream: transformer(methods)
+           stream: transformer$1(methods)

          };
        }
          };
        }

-       function transformer(methods) {
+       function transformer$1(methods) {

          return function (stream) {
            var s = new TransformStream();
 
          return function (stream) {
            var s = new TransformStream();
 


@@ -11750,8 +12669,8 @@
          var clip = projection.clipExtent && projection.clipExtent();
          projection.scale(150).translate([0, 0]);
          if (clip != null) projection.clipExtent(null);
          var clip = projection.clipExtent && projection.clipExtent();
          projection.scale(150).translate([0, 0]);
          if (clip != null) projection.clipExtent(null);

-         d3_geoStream(object, projection.stream(boundsStream$1));
-         fitBounds(boundsStream$1.result());
+         d3_geoStream(object, projection.stream(boundsStream));
+         fitBounds(boundsStream.result());

          if (clip != null) projection.clipExtent(clip);
          return projection;
        }
          if (clip != null) projection.clipExtent(clip);
          return projection;
        }


@@ -11797,7 +12716,7 @@
        }
 
        function resampleNone(project) {
        }
 
        function resampleNone(project) {

-         return transformer({
+         return transformer$1({

            point: function point(x, y) {
              x = project(x, y);
              this.stream.point(x[0], x[1]);
            point: function point(x, y) {
              x = project(x, y);
              this.stream.point(x[0], x[1]);


@@ -11815,9 +12734,9 @@
              var a = a0 + a1,
                  b = b0 + b1,
                  c = c0 + c1,
              var a = a0 + a1,
                  b = b0 + b1,
                  c = c0 + c1,

-                 m = sqrt$1(a * a + b * b + c * c),
+                 m = sqrt(a * a + b * b + c * c),

                  phi2 = asin(c /= m),
                  phi2 = asin(c /= m),

-                 lambda2 = abs$2(abs$2(c) - 1) < epsilon || abs$2(lambda0 - lambda1) < epsilon ? (lambda0 + lambda1) / 2 : atan2(b, a),
+                 lambda2 = abs$2(abs$2(c) - 1) < epsilon$1 || abs$2(lambda0 - lambda1) < epsilon$1 ? (lambda0 + lambda1) / 2 : atan2(b, a),

                  p = project(lambda2, phi2),
                  x2 = p[0],
                  y2 = p[1],
                  p = project(lambda2, phi2),
                  x2 = p[0],
                  y2 = p[1],


@@ -11898,14 +12817,14 @@
          };
        }
 
          };
        }
 

-       var transformRadians = transformer({
+       var transformRadians = transformer$1({

          point: function point(x, y) {
            this.stream.point(x * radians, y * radians);
          }
        });
 
        function transformRotate(rotate) {
          point: function point(x, y) {
            this.stream.point(x * radians, y * radians);
          }
        });
 
        function transformRotate(rotate) {

-         return transformer({
+         return transformer$1({

            point: function point(x, y) {
              var r = rotate(x, y);
              return this.stream.point(r[0], r[1]);
            point: function point(x, y) {
              var r = rotate(x, y);
              return this.stream.point(r[0], r[1]);


@@ -11984,7 +12903,7 @@
              y0,
              x1,
              y1,
              y0,
              x1,
              y1,

-             postclip = identity,
+             postclip = identity$4,

              // post-clip extent
          delta2 = 0.5,
              // precision
              // post-clip extent
          delta2 = 0.5,
              // precision


@@ -12000,7 +12919,7 @@
 
          function invert(point) {
            point = projectRotateTransform.invert(point[0], point[1]);
 
          function invert(point) {
            point = projectRotateTransform.invert(point[0], point[1]);

-           return point && [point[0] * degrees, point[1] * degrees];
+           return point && [point[0] * degrees$1, point[1] * degrees$1];

          }
 
          projection.stream = function (stream) {
          }
 
          projection.stream = function (stream) {


@@ -12016,11 +12935,11 @@
          };
 
          projection.clipAngle = function (_) {
          };
 
          projection.clipAngle = function (_) {

-           return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees;
+           return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees$1;

          };
 
          projection.clipExtent = function (_) {
          };
 
          projection.clipExtent = function (_) {

-           return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+           return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];

          };
 
          projection.scale = function (_) {
          };
 
          projection.scale = function (_) {


@@ -12032,15 +12951,15 @@
          };
 
          projection.center = function (_) {
          };
 
          projection.center = function (_) {

-           return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees, phi * degrees];
+           return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees$1, phi * degrees$1];

          };
 
          projection.rotate = function (_) {
          };
 
          projection.rotate = function (_) {

-           return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees, deltaPhi * degrees, deltaGamma * degrees];
+           return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees$1, deltaPhi * degrees$1, deltaGamma * degrees$1];

          };
 
          projection.angle = function (_) {
          };
 
          projection.angle = function (_) {

-           return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees;
+           return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees$1;

          };
 
          projection.reflectX = function (_) {
          };
 
          projection.reflectX = function (_) {


@@ -12052,7 +12971,7 @@
          };
 
          projection.precision = function (_) {
          };
 
          projection.precision = function (_) {

-           return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt$1(delta2);
+           return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt(delta2);

          };
 
          projection.fitExtent = function (extent, object) {
          };
 
          projection.fitExtent = function (extent, object) {


@@ -12098,7 +13017,7 @@
        }
 
        mercatorRaw.invert = function (x, y) {
        }
 
        mercatorRaw.invert = function (x, y) {

-         return [x, 2 * atan(exp(y)) - halfPi];
+         return [x, 2 * atan(exp$2(y)) - halfPi];

        };
 
        function mercator () {
        };
 
        function mercator () {


@@ -12158,13 +13077,13 @@
              // clip extent
          kx = 1,
              ky = 1,
              // clip extent
          kx = 1,
              ky = 1,

-             transform = transformer({
+             transform = transformer$1({

            point: function point(x, y) {
              var p = projection([x, y]);
              this.stream.point(p[0], p[1]);
            }
          }),
            point: function point(x, y) {
              var p = projection([x, y]);
              this.stream.point(p[0], p[1]);
            }
          }),

-             postclip = identity,
+             postclip = identity$4,

              cache,
              cacheStream;
 
              cache,
              cacheStream;
 


@@ -12210,7 +13129,7 @@
          };
 
          projection.clipExtent = function (_) {
          };
 
          projection.clipExtent = function (_) {

-           return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+           return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];

          };
 
          projection.scale = function (_) {
          };
 
          projection.scale = function (_) {


@@ -12222,7 +13141,7 @@
          };
 
          projection.angle = function (_) {
          };
 
          projection.angle = function (_) {

-           return arguments.length ? (alpha = _ % 360 * radians, sa = sin(alpha), ca = cos(alpha), reset()) : alpha * degrees;
+           return arguments.length ? (alpha = _ % 360 * radians, sa = sin(alpha), ca = cos(alpha), reset()) : alpha * degrees$1;

          };
 
          projection.reflectX = function (_) {
          };
 
          projection.reflectX = function (_) {


@@ -12406,33 +13325,36 @@
          }
        });
 
          }
        });
 

-       var $every$1 = arrayIteration.every;
-
-
+       var $$p = _export;
+       var $every = arrayIteration.every;
+       var arrayMethodIsStrict$1 = arrayMethodIsStrict$8;

 
 

-       var STRICT_METHOD$6 = arrayMethodIsStrict('every');
-       var USES_TO_LENGTH$8 = arrayMethodUsesToLength('every');
+       var STRICT_METHOD$1 = arrayMethodIsStrict$1('every');

 
        // `Array.prototype.every` method
 
        // `Array.prototype.every` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.every
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD$6 || !USES_TO_LENGTH$8 }, {
+       // https://tc39.es/ecma262/#sec-array.prototype.every
+       $$p({ target: 'Array', proto: true, forced: !STRICT_METHOD$1 }, {

          every: function every(callbackfn /* , thisArg */) {
          every: function every(callbackfn /* , thisArg */) {

-           return $every$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+           return $every(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 

-       var $reduce$1 = arrayReduce.left;
-
-
+       var $$o = _export;
+       var $reduce = arrayReduce.left;
+       var arrayMethodIsStrict = arrayMethodIsStrict$8;
+       var CHROME_VERSION = engineV8Version;
+       var IS_NODE = engineIsNode;

 
 

-       var STRICT_METHOD$7 = arrayMethodIsStrict('reduce');
-       var USES_TO_LENGTH$9 = arrayMethodUsesToLength('reduce', { 1: 0 });
+       var STRICT_METHOD = arrayMethodIsStrict('reduce');
+       // Chrome 80-82 has a critical bug
+       // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
+       var CHROME_BUG = !IS_NODE && CHROME_VERSION > 79 && CHROME_VERSION < 83;

 
        // `Array.prototype.reduce` method
 
        // `Array.prototype.reduce` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.reduce
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD$7 || !USES_TO_LENGTH$9 }, {
+       // https://tc39.es/ecma262/#sec-array.prototype.reduce
+       $$o({ target: 'Array', proto: true, forced: !STRICT_METHOD || CHROME_BUG }, {

          reduce: function reduce(callbackfn /* , initialValue */) {
          reduce: function reduce(callbackfn /* , initialValue */) {

-           return $reduce$1(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
+           return $reduce(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 


@@ -12957,10 +13879,22 @@
 
          var x = 0;
          var y = 0;
 
          var x = 0;
          var y = 0;

-         if (point[0] > dimensions[0] - pad[1]) x = -10;
-         if (point[0] < pad[3]) x = 10;
-         if (point[1] > dimensions[1] - pad[2]) y = -10;
-         if (point[1] < pad[0]) y = 10;
+
+         if (point[0] > dimensions[0] - pad[1]) {
+           x = -10;
+         }
+
+         if (point[0] < pad[3]) {
+           x = 10;
+         }
+
+         if (point[1] > dimensions[1] - pad[2]) {
+           y = -10;
+         }
+
+         if (point[1] < pad[0]) {
+           y = 10;
+         }

 
          if (x || y) {
            return [x, y];
 
          if (x || y) {
            return [x, y];


@@ -12969,24 +13903,24 @@
          }
        }
 
          }
        }
 

-       var noop$1 = {
+       var noop = {

          value: function value() {}
        };
 
          value: function value() {}
        };
 

-       function dispatch() {
+       function dispatch$8() {

          for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
            if (!(t = arguments[i] + "") || t in _ || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
            _[t] = [];
          }
 
          for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
            if (!(t = arguments[i] + "") || t in _ || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
            _[t] = [];
          }
 

-         return new Dispatch$1(_);
+         return new Dispatch(_);

        }
 
        }
 

-       function Dispatch$1(_) {
+       function Dispatch(_) {

          this._ = _;
        }
 
          this._ = _;
        }
 

-       function parseTypenames(typenames, types) {
+       function parseTypenames$1(typenames, types) {

          return typenames.trim().split(/^|\s+/).map(function (t) {
            var name = "",
                i = t.indexOf(".");
          return typenames.trim().split(/^|\s+/).map(function (t) {
            var name = "",
                i = t.indexOf(".");


@@ -12999,18 +13933,18 @@
          });
        }
 
          });
        }
 

-       Dispatch$1.prototype = dispatch.prototype = {
-         constructor: Dispatch$1,
+       Dispatch.prototype = dispatch$8.prototype = {
+         constructor: Dispatch,

          on: function on(typename, callback) {
            var _ = this._,
          on: function on(typename, callback) {
            var _ = this._,

-               T = parseTypenames(typename + "", _),
+               T = parseTypenames$1(typename + "", _),

                t,
                i = -1,
                n = T.length; // If no callback was specified, return the callback of the given type and name.
 
            if (arguments.length < 2) {
              while (++i < n) {
                t,
                i = -1,
                n = T.length; // If no callback was specified, return the callback of the given type and name.
 
            if (arguments.length < 2) {
              while (++i < n) {

-               if ((t = (typename = T[i]).type) && (t = get$3(_[t], typename.name))) return t;
+               if ((t = (typename = T[i]).type) && (t = get$2(_[t], typename.name))) return t;

              }
 
              return;
              }
 
              return;


@@ -13021,8 +13955,8 @@
            if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
 
            while (++i < n) {
            if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
 
            while (++i < n) {

-             if (t = (typename = T[i]).type) _[t] = set$3(_[t], typename.name, callback);else if (callback == null) for (t in _) {
-               _[t] = set$3(_[t], typename.name, null);
+             if (t = (typename = T[i]).type) _[t] = set$1(_[t], typename.name, callback);else if (callback == null) for (t in _) {
+               _[t] = set$1(_[t], typename.name, null);

              }
            }
 
              }
            }
 


@@ -13036,7 +13970,7 @@
              copy[t] = _[t].slice();
            }
 
              copy[t] = _[t].slice();
            }
 

-           return new Dispatch$1(copy);
+           return new Dispatch(copy);

          },
          call: function call(type, that) {
            if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) {
          },
          call: function call(type, that) {
            if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) {


@@ -13057,7 +13991,7 @@
          }
        };
 
          }
        };
 

-       function get$3(type, name) {
+       function get$2(type, name) {

          for (var i = 0, n = type.length, c; i < n; ++i) {
            if ((c = type[i]).name === name) {
              return c.value;
          for (var i = 0, n = type.length, c; i < n; ++i) {
            if ((c = type[i]).name === name) {
              return c.value;


@@ -13065,10 +13999,10 @@
          }
        }
 
          }
        }
 

-       function set$3(type, name, callback) {
+       function set$1(type, name, callback) {

          for (var i = 0, n = type.length; i < n; ++i) {
            if (type[i].name === name) {
          for (var i = 0, n = type.length; i < n; ++i) {
            if (type[i].name === name) {

-             type[i] = noop$1, type = type.slice(0, i).concat(type.slice(i + 1));
+             type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));

              break;
            }
          }
              break;
            }
          }


@@ -13138,7 +14072,7 @@
            }
          }
 
            }
          }
 

-         return new Selection(subgroups, this._parents);
+         return new Selection$1(subgroups, this._parents);

        }
 
        function array (x) {
        }
 
        function array (x) {


@@ -13175,31 +14109,29 @@
            }
          }
 
            }
          }
 

-         return new Selection(subgroups, parents);
+         return new Selection$1(subgroups, parents);

        }
 
        }
 

-       var $find$1 = arrayIteration.find;
-
-
+       var $$n = _export;
+       var $find = arrayIteration.find;
+       var addToUnscopables$2 = addToUnscopables$5;

 
        var FIND = 'find';
 
        var FIND = 'find';

-       var SKIPS_HOLES = true;
-
-       var USES_TO_LENGTH$a = arrayMethodUsesToLength(FIND);
+       var SKIPS_HOLES$1 = true;

 
        // Shouldn't skip holes
 
        // Shouldn't skip holes

-       if (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES = false; });
+       if (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES$1 = false; });

 
        // `Array.prototype.find` method
 
        // `Array.prototype.find` method

-       // https://tc39.github.io/ecma262/#sec-array.prototype.find
-       _export({ target: 'Array', proto: true, forced: SKIPS_HOLES || !USES_TO_LENGTH$a }, {
+       // https://tc39.es/ecma262/#sec-array.prototype.find
+       $$n({ target: 'Array', proto: true, forced: SKIPS_HOLES$1 }, {

          find: function find(callbackfn /* , that = undefined */) {
          find: function find(callbackfn /* , that = undefined */) {

-           return $find$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+           return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);

          }
        });
 
          }
        });
 

-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables(FIND);
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables$2(FIND);

 
        function matcher (selector) {
          return function () {
 
        function matcher (selector) {
          return function () {


@@ -13212,11 +14144,11 @@
          };
        }
 
          };
        }
 

-       var find$1 = Array.prototype.find;
+       var find = Array.prototype.find;

 
        function childFind(match) {
          return function () {
 
        function childFind(match) {
          return function () {

-           return find$1.call(this.children, match);
+           return find.call(this.children, match);

          };
        }
 
          };
        }
 


@@ -13255,7 +14187,7 @@
            }
          }
 
            }
          }
 

-         return new Selection(subgroups, this._parents);
+         return new Selection$1(subgroups, this._parents);

        }
 
        function sparse (update) {
        }
 
        function sparse (update) {


@@ -13263,7 +14195,7 @@
        }
 
        function selection_enter () {
        }
 
        function selection_enter () {

-         return new Selection(this._enter || this._groups.map(sparse), this._parents);
+         return new Selection$1(this._enter || this._groups.map(sparse), this._parents);

        }
        function EnterNode(parent, datum) {
          this.ownerDocument = parent.ownerDocument;
        }
        function EnterNode(parent, datum) {
          this.ownerDocument = parent.ownerDocument;


@@ -13288,7 +14220,7 @@
          }
        };
 
          }
        };
 

-       function constant (x) {
+       function constant$3 (x) {

          return function () {
            return x;
          };
          return function () {
            return x;
          };


@@ -13373,7 +14305,7 @@
          var bind = key ? bindKey : bindIndex,
              parents = this._parents,
              groups = this._groups;
          var bind = key ? bindKey : bindIndex,
              parents = this._parents,
              groups = this._groups;

-         if (typeof value !== "function") value = constant(value);
+         if (typeof value !== "function") value = constant$3(value);

 
          for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
            var parent = parents[j],
 
          for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
            var parent = parents[j],


@@ -13400,14 +14332,14 @@
            }
          }
 
            }
          }
 

-         update = new Selection(update, parents);
+         update = new Selection$1(update, parents);

          update._enter = enter;
          update._exit = exit;
          return update;
        }
 
        function selection_exit () {
          update._enter = enter;
          update._exit = exit;
          return update;
        }
 
        function selection_exit () {

-         return new Selection(this._exit || this._groups.map(sparse), this._parents);
+         return new Selection$1(this._exit || this._groups.map(sparse), this._parents);

        }
 
        function selection_join (onenter, onupdate, onexit) {
        }
 
        function selection_join (onenter, onupdate, onexit) {


@@ -13421,7 +14353,7 @@
        }
 
        function selection_merge (selection) {
        }
 
        function selection_merge (selection) {

-         if (!(selection instanceof Selection)) throw new Error("invalid merge");
+         if (!(selection instanceof Selection$1)) throw new Error("invalid merge");

 
          for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
            for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
 
          for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
            for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {


@@ -13435,7 +14367,7 @@
            merges[j] = groups0[j];
          }
 
            merges[j] = groups0[j];
          }
 

-         return new Selection(merges, this._parents);
+         return new Selection$1(merges, this._parents);

        }
 
        function selection_order () {
        }
 
        function selection_order () {


@@ -13468,7 +14400,7 @@
            sortgroup.sort(compareNode);
          }
 
            sortgroup.sort(compareNode);
          }
 

-         return new Selection(sortgroups, this._parents).order();
+         return new Selection$1(sortgroups, this._parents).order();

        }
 
        function ascending(a, b) {
        }
 
        function ascending(a, b) {


@@ -13532,38 +14464,38 @@
          return this;
        }
 
          return this;
        }
 

-       function attrRemove(name) {
+       function attrRemove$1(name) {

          return function () {
            this.removeAttribute(name);
          };
        }
 
          return function () {
            this.removeAttribute(name);
          };
        }
 

-       function attrRemoveNS(fullname) {
+       function attrRemoveNS$1(fullname) {

          return function () {
            this.removeAttributeNS(fullname.space, fullname.local);
          };
        }
 
          return function () {
            this.removeAttributeNS(fullname.space, fullname.local);
          };
        }
 

-       function attrConstant(name, value) {
+       function attrConstant$1(name, value) {

          return function () {
            this.setAttribute(name, value);
          };
        }
 
          return function () {
            this.setAttribute(name, value);
          };
        }
 

-       function attrConstantNS(fullname, value) {
+       function attrConstantNS$1(fullname, value) {

          return function () {
            this.setAttributeNS(fullname.space, fullname.local, value);
          };
        }
 
          return function () {
            this.setAttributeNS(fullname.space, fullname.local, value);
          };
        }
 

-       function attrFunction(name, value) {
+       function attrFunction$1(name, value) {

          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.removeAttribute(name);else this.setAttribute(name, v);
          };
        }
 
          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.removeAttribute(name);else this.setAttribute(name, v);
          };
        }
 

-       function attrFunctionNS(fullname, value) {
+       function attrFunctionNS$1(fullname, value) {

          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.removeAttributeNS(fullname.space, fullname.local);else this.setAttributeNS(fullname.space, fullname.local, v);
          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.removeAttributeNS(fullname.space, fullname.local);else this.setAttributeNS(fullname.space, fullname.local, v);


@@ -13578,7 +14510,7 @@
            return fullname.local ? node.getAttributeNS(fullname.space, fullname.local) : node.getAttribute(fullname);
          }
 
            return fullname.local ? node.getAttributeNS(fullname.space, fullname.local) : node.getAttribute(fullname);
          }
 

-         return this.each((value == null ? fullname.local ? attrRemoveNS : attrRemove : typeof value === "function" ? fullname.local ? attrFunctionNS : attrFunction : fullname.local ? attrConstantNS : attrConstant)(fullname, value));
+         return this.each((value == null ? fullname.local ? attrRemoveNS$1 : attrRemove$1 : typeof value === "function" ? fullname.local ? attrFunctionNS$1 : attrFunction$1 : fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, value));

        }
 
        function defaultView (node) {
        }
 
        function defaultView (node) {


@@ -13587,19 +14519,19 @@
          || node.defaultView; // node is a Document
        }
 
          || node.defaultView; // node is a Document
        }
 

-       function styleRemove(name) {
+       function styleRemove$1(name) {

          return function () {
            this.style.removeProperty(name);
          };
        }
 
          return function () {
            this.style.removeProperty(name);
          };
        }
 

-       function styleConstant(name, value, priority) {
+       function styleConstant$1(name, value, priority) {

          return function () {
            this.style.setProperty(name, value, priority);
          };
        }
 
          return function () {
            this.style.setProperty(name, value, priority);
          };
        }
 

-       function styleFunction(name, value, priority) {
+       function styleFunction$1(name, value, priority) {

          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.style.removeProperty(name);else this.style.setProperty(name, v, priority);
          return function () {
            var v = value.apply(this, arguments);
            if (v == null) this.style.removeProperty(name);else this.style.setProperty(name, v, priority);


@@ -13607,7 +14539,7 @@
        }
 
        function selection_style (name, value, priority) {
        }
 
        function selection_style (name, value, priority) {

-         return arguments.length > 1 ? this.each((value == null ? styleRemove : typeof value === "function" ? styleFunction : styleConstant)(name, value, priority == null ? "" : priority)) : styleValue(this.node(), name);
+         return arguments.length > 1 ? this.each((value == null ? styleRemove$1 : typeof value === "function" ? styleFunction$1 : styleConstant$1)(name, value, priority == null ? "" : priority)) : styleValue(this.node(), name);

        }
        function styleValue(node, name) {
          return node.style.getPropertyValue(name) || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);
        }
        function styleValue(node, name) {
          return node.style.getPropertyValue(name) || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);


@@ -13733,13 +14665,13 @@
          this.textContent = "";
        }
 
          this.textContent = "";
        }
 

-       function textConstant(value) {
+       function textConstant$1(value) {

          return function () {
            this.textContent = value;
          };
        }
 
          return function () {
            this.textContent = value;
          };
        }
 

-       function textFunction(value) {
+       function textFunction$1(value) {

          return function () {
            var v = value.apply(this, arguments);
            this.textContent = v == null ? "" : v;
          return function () {
            var v = value.apply(this, arguments);
            this.textContent = v == null ? "" : v;


@@ -13747,7 +14679,7 @@
        }
 
        function selection_text (value) {
        }
 
        function selection_text (value) {

-         return arguments.length ? this.each(value == null ? textRemove : (typeof value === "function" ? textFunction : textConstant)(value)) : this.node().textContent;
+         return arguments.length ? this.each(value == null ? textRemove : (typeof value === "function" ? textFunction$1 : textConstant$1)(value)) : this.node().textContent;

        }
 
        function htmlRemove() {
        }
 
        function htmlRemove() {


@@ -13806,13 +14738,13 @@
          });
        }
 
          });
        }
 

-       function remove() {
+       function remove$7() {

          var parent = this.parentNode;
          if (parent) parent.removeChild(this);
        }
 
        function selection_remove () {
          var parent = this.parentNode;
          if (parent) parent.removeChild(this);
        }
 
        function selection_remove () {

-         return this.each(remove);
+         return this.each(remove$7);

        }
 
        function selection_cloneShallow() {
        }
 
        function selection_cloneShallow() {


@@ -13841,7 +14773,7 @@
          };
        }
 
          };
        }
 

-       function parseTypenames$1(typenames) {
+       function parseTypenames(typenames) {

          return typenames.trim().split(/^|\s+/).map(function (t) {
            var name = "",
                i = t.indexOf(".");
          return typenames.trim().split(/^|\s+/).map(function (t) {
            var name = "",
                i = t.indexOf(".");


@@ -13896,7 +14828,7 @@
        }
 
        function selection_on (typename, value, options) {
        }
 
        function selection_on (typename, value, options) {

-         var typenames = parseTypenames$1(typename + ""),
+         var typenames = parseTypenames(typename + ""),

              i,
              n = typenames.length,
              t;
              i,
              n = typenames.length,
              t;


@@ -13923,7 +14855,7 @@
          return this;
        }
 
          return this;
        }
 

-       function dispatchEvent$1(node, type, params) {
+       function dispatchEvent(node, type, params) {

          var window = defaultView(node),
              event = window.CustomEvent;
 
          var window = defaultView(node),
              event = window.CustomEvent;
 


@@ -13939,13 +14871,13 @@
 
        function dispatchConstant(type, params) {
          return function () {
 
        function dispatchConstant(type, params) {
          return function () {

-           return dispatchEvent$1(this, type, params);
+           return dispatchEvent(this, type, params);

          };
        }
 
        function dispatchFunction(type, params) {
          return function () {
          };
        }
 
        function dispatchFunction(type, params) {
          return function () {

-           return dispatchEvent$1(this, type, params.apply(this, arguments));
+           return dispatchEvent(this, type, params.apply(this, arguments));

          };
        }
 
          };
        }
 


@@ -13953,7 +14885,7 @@
          return this.each((typeof params === "function" ? dispatchFunction : dispatchConstant)(type, params));
        }
 
          return this.each((typeof params === "function" ? dispatchFunction : dispatchConstant)(type, params));
        }
 

-       var _marked$2 = /*#__PURE__*/regeneratorRuntime.mark(_callee);
+       var _marked$1 = /*#__PURE__*/regeneratorRuntime.mark(_callee);

 
        function _callee() {
          var groups, j, m, group, i, n, node;
 
        function _callee() {
          var groups, j, m, group, i, n, node;


@@ -14000,25 +14932,25 @@
                  return _context.stop();
              }
            }
                  return _context.stop();
              }
            }

-         }, _marked$2, this);
+         }, _marked$1, this);

        }
 
        }
 

-       var root = [null];
-       function Selection(groups, parents) {
+       var root$1 = [null];
+       function Selection$1(groups, parents) {

          this._groups = groups;
          this._parents = parents;
        }
 
        function selection() {
          this._groups = groups;
          this._parents = parents;
        }
 
        function selection() {

-         return new Selection([[document.documentElement]], root);
+         return new Selection$1([[document.documentElement]], root$1);

        }
 
        function selection_selection() {
          return this;
        }
 
        }
 
        function selection_selection() {
          return this;
        }
 

-       Selection.prototype = selection.prototype = _defineProperty({
-         constructor: Selection,
+       Selection$1.prototype = selection.prototype = _defineProperty({
+         constructor: Selection$1,

          select: selection_select,
          selectAll: selection_selectAll,
          selectChild: selection_selectChild,
          select: selection_select,
          selectAll: selection_selectAll,
          selectChild: selection_selectChild,


@@ -14056,7 +14988,7 @@
        }, Symbol.iterator, _callee);
 
        function select (selector) {
        }, Symbol.iterator, _callee);
 
        function select (selector) {

-         return typeof selector === "string" ? new Selection([[document.querySelector(selector)]], [document.documentElement]) : new Selection([[selector]], root);
+         return typeof selector === "string" ? new Selection$1([[document.querySelector(selector)]], [document.documentElement]) : new Selection$1([[selector]], root$1);

        }
 
        function sourceEvent (event) {
        }
 
        function sourceEvent (event) {


@@ -14093,23 +15025,23 @@
        }
 
        function selectAll (selector) {
        }
 
        function selectAll (selector) {

-         return typeof selector === "string" ? new Selection([document.querySelectorAll(selector)], [document.documentElement]) : new Selection([selector == null ? [] : array(selector)], root);
+         return typeof selector === "string" ? new Selection$1([document.querySelectorAll(selector)], [document.documentElement]) : new Selection$1([selector == null ? [] : array(selector)], root$1);

        }
 
        }
 

-       function nopropagation(event) {
+       function nopropagation$1(event) {

          event.stopImmediatePropagation();
        }
          event.stopImmediatePropagation();
        }

-       function noevent (event) {
+       function noevent$1 (event) {

          event.preventDefault();
          event.stopImmediatePropagation();
        }
 
        function dragDisable (view) {
          var root = view.document.documentElement,
          event.preventDefault();
          event.stopImmediatePropagation();
        }
 
        function dragDisable (view) {
          var root = view.document.documentElement,

-             selection = select(view).on("dragstart.drag", noevent, true);
+             selection = select(view).on("dragstart.drag", noevent$1, true);

 
          if ("onselectstart" in root) {
 
          if ("onselectstart" in root) {

-           selection.on("selectstart.drag", noevent, true);
+           selection.on("selectstart.drag", noevent$1, true);

          } else {
            root.__noselect = root.style.MozUserSelect;
            root.style.MozUserSelect = "none";
          } else {
            root.__noselect = root.style.MozUserSelect;
            root.style.MozUserSelect = "none";


@@ -14120,7 +15052,7 @@
              selection = select(view).on("dragstart.drag", null);
 
          if (noclick) {
              selection = select(view).on("dragstart.drag", null);
 
          if (noclick) {

-           selection.on("click.drag", noevent, true);
+           selection.on("click.drag", noevent$1, true);

            setTimeout(function () {
              selection.on("click.drag", null);
            }, 0);
            setTimeout(function () {
              selection.on("click.drag", null);
            }, 0);


@@ -14134,18 +15066,12 @@
          }
        }
 
          }
        }
 

-       var constant$1 = (function (x) {
+       var constant$2 = (function (x) {

          return function () {
            return x;
          };
        });
 
          return function () {
            return x;
          };
        });
 

-       // `Object.defineProperties` method
-       // https://tc39.github.io/ecma262/#sec-object.defineproperties
-       _export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
-         defineProperties: objectDefineProperties
-       });
-

        function DragEvent(type, _ref) {
          var sourceEvent = _ref.sourceEvent,
              subject = _ref.subject,
        function DragEvent(type, _ref) {
          var sourceEvent = _ref.sourceEvent,
              subject = _ref.subject,


@@ -14220,7 +15146,7 @@
          return value === this._ ? this : value;
        };
 
          return value === this._ ? this : value;
        };
 

-       function defaultFilter(event) {
+       function defaultFilter$2(event) {

          return !event.ctrlKey && !event.button;
        }
 
          return !event.ctrlKey && !event.button;
        }
 


@@ -14235,17 +15161,17 @@
          } : d;
        }
 
          } : d;
        }
 

-       function defaultTouchable() {
+       function defaultTouchable$1() {

          return navigator.maxTouchPoints || "ontouchstart" in this;
        }
 
        function d3_drag () {
          return navigator.maxTouchPoints || "ontouchstart" in this;
        }
 
        function d3_drag () {

-         var filter = defaultFilter,
+         var filter = defaultFilter$2,

              container = defaultContainer,
              subject = defaultSubject,
              container = defaultContainer,
              subject = defaultSubject,

-             touchable = defaultTouchable,
+             touchable = defaultTouchable$1,

              gestures = {},
              gestures = {},

-             listeners = dispatch("start", "drag", "end"),
+             listeners = dispatch$8("start", "drag", "end"),

              active = 0,
              mousedownx,
              mousedowny,
              active = 0,
              mousedownx,
              mousedowny,


@@ -14263,7 +15189,7 @@
            if (!gesture) return;
            select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true);
            dragDisable(event.view);
            if (!gesture) return;
            select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true);
            dragDisable(event.view);

-           nopropagation(event);
+           nopropagation$1(event);

            mousemoving = false;
            mousedownx = event.clientX;
            mousedowny = event.clientY;
            mousemoving = false;
            mousedownx = event.clientX;
            mousedowny = event.clientY;


@@ -14271,7 +15197,7 @@
          }
 
          function mousemoved(event) {
          }
 
          function mousemoved(event) {

-           noevent(event);
+           noevent$1(event);

 
            if (!mousemoving) {
              var dx = event.clientX - mousedownx,
 
            if (!mousemoving) {
              var dx = event.clientX - mousedownx,


@@ -14285,7 +15211,7 @@
          function mouseupped(event) {
            select(event.view).on("mousemove.drag mouseup.drag", null);
            yesdrag(event.view, mousemoving);
          function mouseupped(event) {
            select(event.view).on("mousemove.drag mouseup.drag", null);
            yesdrag(event.view, mousemoving);

-           noevent(event);
+           noevent$1(event);

            gestures.mouse("end", event);
          }
 
            gestures.mouse("end", event);
          }
 


@@ -14299,7 +15225,7 @@
 
            for (i = 0; i < n; ++i) {
              if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) {
 
            for (i = 0; i < n; ++i) {
              if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) {

-               nopropagation(event);
+               nopropagation$1(event);

                gesture("start", event, touches[i]);
              }
            }
                gesture("start", event, touches[i]);
              }
            }


@@ -14313,7 +15239,7 @@
 
            for (i = 0; i < n; ++i) {
              if (gesture = gestures[touches[i].identifier]) {
 
            for (i = 0; i < n; ++i) {
              if (gesture = gestures[touches[i].identifier]) {

-               noevent(event);
+               noevent$1(event);

                gesture("drag", event, touches[i]);
              }
            }
                gesture("drag", event, touches[i]);
              }
            }


@@ -14331,7 +15257,7 @@
 
            for (i = 0; i < n; ++i) {
              if (gesture = gestures[touches[i].identifier]) {
 
            for (i = 0; i < n; ++i) {
              if (gesture = gestures[touches[i].identifier]) {

-               nopropagation(event);
+               nopropagation$1(event);

                gesture("end", event, touches[i]);
              }
            }
                gesture("end", event, touches[i]);
              }
            }


@@ -14390,19 +15316,19 @@
          }
 
          drag.filter = function (_) {
          }
 
          drag.filter = function (_) {

-           return arguments.length ? (filter = typeof _ === "function" ? _ : constant$1(!!_), drag) : filter;
+           return arguments.length ? (filter = typeof _ === "function" ? _ : constant$2(!!_), drag) : filter;

          };
 
          drag.container = function (_) {
          };
 
          drag.container = function (_) {

-           return arguments.length ? (container = typeof _ === "function" ? _ : constant$1(_), drag) : container;
+           return arguments.length ? (container = typeof _ === "function" ? _ : constant$2(_), drag) : container;

          };
 
          drag.subject = function (_) {
          };
 
          drag.subject = function (_) {

-           return arguments.length ? (subject = typeof _ === "function" ? _ : constant$1(_), drag) : subject;
+           return arguments.length ? (subject = typeof _ === "function" ? _ : constant$2(_), drag) : subject;

          };
 
          drag.touchable = function (_) {
          };
 
          drag.touchable = function (_) {

-           return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$1(!!_), drag) : touchable;
+           return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$2(!!_), drag) : touchable;

          };
 
          drag.on = function () {
          };
 
          drag.on = function () {


@@ -14417,42 +15343,122 @@
          return drag;
        }
 
          return drag;
        }
 

-       var defineProperty$9 = objectDefineProperty.f;
+       var DESCRIPTORS$3 = descriptors;
+       var global$3 = global$F;
+       var isForced$1 = isForced_1;
+       var inheritIfRequired$1 = inheritIfRequired$4;
+       var createNonEnumerableProperty = createNonEnumerableProperty$e;
+       var defineProperty$1 = objectDefineProperty.f;

        var getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;
        var getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;

-
-
-
-
-
-       var setInternalState$8 = internalState.set;
-
-
-
-       var MATCH$1 = wellKnownSymbol('match');
-       var NativeRegExp = global_1.RegExp;
-       var RegExpPrototype$1 = NativeRegExp.prototype;
+       var isRegExp$1 = isRegexp;
+       var getFlags = regexpFlags$1;
+       var stickyHelpers = regexpStickyHelpers;
+       var redefine$2 = redefine$g.exports;
+       var fails$a = fails$N;
+       var has$1 = has$j;
+       var enforceInternalState = internalState.enforce;
+       var setSpecies = setSpecies$5;
+       var wellKnownSymbol$1 = wellKnownSymbol$s;
+       var UNSUPPORTED_DOT_ALL = regexpUnsupportedDotAll;
+       var UNSUPPORTED_NCG = regexpUnsupportedNcg;
+
+       var MATCH$1 = wellKnownSymbol$1('match');
+       var NativeRegExp = global$3.RegExp;
+       var RegExpPrototype = NativeRegExp.prototype;
+       // TODO: Use only propper RegExpIdentifierName
+       var IS_NCG = /^\?<[^\s\d!#%&*+<=>@^][^\s!#%&*+<=>@^]*>/;

        var re1 = /a/g;
        var re2 = /a/g;
 
        // "new" should create a new object, old webkit bug
        var CORRECT_NEW = new NativeRegExp(re1) !== re1;
 
        var re1 = /a/g;
        var re2 = /a/g;
 
        // "new" should create a new object, old webkit bug
        var CORRECT_NEW = new NativeRegExp(re1) !== re1;
 

-       var UNSUPPORTED_Y$2 = regexpStickyHelpers.UNSUPPORTED_Y;
+       var UNSUPPORTED_Y = stickyHelpers.UNSUPPORTED_Y;
+
+       var BASE_FORCED = DESCRIPTORS$3 &&
+         (!CORRECT_NEW || UNSUPPORTED_Y || UNSUPPORTED_DOT_ALL || UNSUPPORTED_NCG || fails$a(function () {
+           re2[MATCH$1] = false;
+           // RegExp constructor can alter flags and IsRegExp works correct with @@match
+           return NativeRegExp(re1) != re1 || NativeRegExp(re2) == re2 || NativeRegExp(re1, 'i') != '/a/i';
+         }));
+
+       var handleDotAll = function (string) {
+         var length = string.length;
+         var index = 0;
+         var result = '';
+         var brackets = false;
+         var chr;
+         for (; index <= length; index++) {
+           chr = string.charAt(index);
+           if (chr === '\\') {
+             result += chr + string.charAt(++index);
+             continue;
+           }
+           if (!brackets && chr === '.') {
+             result += '[\\s\\S]';
+           } else {
+             if (chr === '[') {
+               brackets = true;
+             } else if (chr === ']') {
+               brackets = false;
+             } result += chr;
+           }
+         } return result;
+       };

 
 

-       var FORCED$b = descriptors && isForced_1('RegExp', (!CORRECT_NEW || UNSUPPORTED_Y$2 || fails(function () {
-         re2[MATCH$1] = false;
-         // RegExp constructor can alter flags and IsRegExp works correct with @@match
-         return NativeRegExp(re1) != re1 || NativeRegExp(re2) == re2 || NativeRegExp(re1, 'i') != '/a/i';
-       })));
+       var handleNCG = function (string) {
+         var length = string.length;
+         var index = 0;
+         var result = '';
+         var named = [];
+         var names = {};
+         var brackets = false;
+         var ncg = false;
+         var groupid = 0;
+         var groupname = '';
+         var chr;
+         for (; index <= length; index++) {
+           chr = string.charAt(index);
+           if (chr === '\\') {
+             chr = chr + string.charAt(++index);
+           } else if (chr === ']') {
+             brackets = false;
+           } else if (!brackets) switch (true) {
+             case chr === '[':
+               brackets = true;
+               break;
+             case chr === '(':
+               if (IS_NCG.test(string.slice(index + 1))) {
+                 index += 2;
+                 ncg = true;
+               }
+               result += chr;
+               groupid++;
+               continue;
+             case chr === '>' && ncg:
+               if (groupname === '' || has$1(names, groupname)) {
+                 throw new SyntaxError('Invalid capture group name');
+               }
+               names[groupname] = true;
+               named.push([groupname, groupid]);
+               ncg = false;
+               groupname = '';
+               continue;
+           }
+           if (ncg) groupname += chr;
+           else result += chr;
+         } return [result, named];
+       };

 
        // `RegExp` constructor
 
        // `RegExp` constructor

-       // https://tc39.github.io/ecma262/#sec-regexp-constructor
-       if (FORCED$b) {
+       // https://tc39.es/ecma262/#sec-regexp-constructor
+       if (isForced$1('RegExp', BASE_FORCED)) {

          var RegExpWrapper = function RegExp(pattern, flags) {
            var thisIsRegExp = this instanceof RegExpWrapper;
          var RegExpWrapper = function RegExp(pattern, flags) {
            var thisIsRegExp = this instanceof RegExpWrapper;

-           var patternIsRegExp = isRegexp(pattern);
+           var patternIsRegExp = isRegExp$1(pattern);

            var flagsAreUndefined = flags === undefined;
            var flagsAreUndefined = flags === undefined;

-           var sticky;
+           var groups = [];
+           var rawPattern, rawFlags, dotAll, sticky, handled, result, state;

 
            if (!thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined) {
              return pattern;
 
            if (!thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined) {
              return pattern;


@@ -14461,48 +15467,81 @@
            if (CORRECT_NEW) {
              if (patternIsRegExp && !flagsAreUndefined) pattern = pattern.source;
            } else if (pattern instanceof RegExpWrapper) {
            if (CORRECT_NEW) {
              if (patternIsRegExp && !flagsAreUndefined) pattern = pattern.source;
            } else if (pattern instanceof RegExpWrapper) {

-             if (flagsAreUndefined) flags = regexpFlags.call(pattern);
+             if (flagsAreUndefined) flags = getFlags.call(pattern);

              pattern = pattern.source;
            }
 
              pattern = pattern.source;
            }
 

-           if (UNSUPPORTED_Y$2) {
+           pattern = pattern === undefined ? '' : String(pattern);
+           flags = flags === undefined ? '' : String(flags);
+           rawPattern = pattern;
+
+           if (UNSUPPORTED_DOT_ALL && 'dotAll' in re1) {
+             dotAll = !!flags && flags.indexOf('s') > -1;
+             if (dotAll) flags = flags.replace(/s/g, '');
+           }
+
+           rawFlags = flags;
+
+           if (UNSUPPORTED_Y && 'sticky' in re1) {

              sticky = !!flags && flags.indexOf('y') > -1;
              if (sticky) flags = flags.replace(/y/g, '');
            }
 
              sticky = !!flags && flags.indexOf('y') > -1;
              if (sticky) flags = flags.replace(/y/g, '');
            }
 

-           var result = inheritIfRequired(
+           if (UNSUPPORTED_NCG) {
+             handled = handleNCG(pattern);
+             pattern = handled[0];
+             groups = handled[1];
+           }
+
+           result = inheritIfRequired$1(

              CORRECT_NEW ? new NativeRegExp(pattern, flags) : NativeRegExp(pattern, flags),
              CORRECT_NEW ? new NativeRegExp(pattern, flags) : NativeRegExp(pattern, flags),

-             thisIsRegExp ? this : RegExpPrototype$1,
+             thisIsRegExp ? this : RegExpPrototype,

              RegExpWrapper
            );
 
              RegExpWrapper
            );
 

-           if (UNSUPPORTED_Y$2 && sticky) setInternalState$8(result, { sticky: sticky });
+           if (dotAll || sticky || groups.length) {
+             state = enforceInternalState(result);
+             if (dotAll) {
+               state.dotAll = true;
+               state.raw = RegExpWrapper(handleDotAll(pattern), rawFlags);
+             }
+             if (sticky) state.sticky = true;
+             if (groups.length) state.groups = groups;
+           }
+
+           if (pattern !== rawPattern) try {
+             // fails in old engines, but we have no alternatives for unsupported regex syntax
+             createNonEnumerableProperty(result, 'source', rawPattern === '' ? '(?:)' : rawPattern);
+           } catch (error) { /* empty */ }

 
            return result;
          };
 
            return result;
          };

+

          var proxy = function (key) {
          var proxy = function (key) {

-           key in RegExpWrapper || defineProperty$9(RegExpWrapper, key, {
+           key in RegExpWrapper || defineProperty$1(RegExpWrapper, key, {

              configurable: true,
              get: function () { return NativeRegExp[key]; },
              set: function (it) { NativeRegExp[key] = it; }
            });
          };
              configurable: true,
              get: function () { return NativeRegExp[key]; },
              set: function (it) { NativeRegExp[key] = it; }
            });
          };

-         var keys$2 = getOwnPropertyNames$1(NativeRegExp);
-         var index = 0;
-         while (keys$2.length > index) proxy(keys$2[index++]);
-         RegExpPrototype$1.constructor = RegExpWrapper;
-         RegExpWrapper.prototype = RegExpPrototype$1;
-         redefine(global_1, 'RegExp', RegExpWrapper);
+
+         for (var keys$1 = getOwnPropertyNames$1(NativeRegExp), index$1 = 0; keys$1.length > index$1;) {
+           proxy(keys$1[index$1++]);
+         }
+
+         RegExpPrototype.constructor = RegExpWrapper;
+         RegExpWrapper.prototype = RegExpPrototype;
+         redefine$2(global$3, 'RegExp', RegExpWrapper);

        }
 
        }
 

-       // https://tc39.github.io/ecma262/#sec-get-regexp-@@species
+       // https://tc39.es/ecma262/#sec-get-regexp-@@species

        setSpecies('RegExp');
 
        function define (constructor, factory, prototype) {
          constructor.prototype = factory.prototype = prototype;
          prototype.constructor = constructor;
        }
        setSpecies('RegExp');
 
        function define (constructor, factory, prototype) {
          constructor.prototype = factory.prototype = prototype;
          prototype.constructor = constructor;
        }

-       function extend(parent, definition) {
+       function extend$3(parent, definition) {

          var prototype = Object.create(parent.prototype);
 
          for (var key in definition) {
          var prototype = Object.create(parent.prototype);
 
          for (var key in definition) {


@@ -14745,7 +15784,7 @@
          this.b = +b;
          this.opacity = +opacity;
        }
          this.b = +b;
          this.opacity = +opacity;
        }

-       define(Rgb, rgb, extend(Color, {
+       define(Rgb, rgb, extend$3(Color, {

          brighter: function brighter(k) {
            k = k == null ? _brighter : Math.pow(_brighter, k);
            return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);
          brighter: function brighter(k) {
            k = k == null ? _brighter : Math.pow(_brighter, k);
            return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);


@@ -14768,7 +15807,7 @@
        }));
 
        function rgb_formatHex() {
        }));
 
        function rgb_formatHex() {

-         return "#" + hex$2(this.r) + hex$2(this.g) + hex$2(this.b);
+         return "#" + hex$1(this.r) + hex$1(this.g) + hex$1(this.b);

        }
 
        function rgb_formatRgb() {
        }
 
        function rgb_formatRgb() {


@@ -14777,7 +15816,7 @@
          return (a === 1 ? "rgb(" : "rgba(") + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + ", " + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + ", " + Math.max(0, Math.min(255, Math.round(this.b) || 0)) + (a === 1 ? ")" : ", " + a + ")");
        }
 
          return (a === 1 ? "rgb(" : "rgba(") + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + ", " + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + ", " + Math.max(0, Math.min(255, Math.round(this.b) || 0)) + (a === 1 ? ")" : ", " + a + ")");
        }
 

-       function hex$2(value) {
+       function hex$1(value) {

          value = Math.max(0, Math.min(255, Math.round(value) || 0));
          return (value < 16 ? "0" : "") + value.toString(16);
        }
          value = Math.max(0, Math.min(255, Math.round(value) || 0));
          return (value < 16 ? "0" : "") + value.toString(16);
        }


@@ -14823,7 +15862,7 @@
          this.opacity = +opacity;
        }
 
          this.opacity = +opacity;
        }
 

-       define(Hsl, hsl, extend(Color, {
+       define(Hsl, hsl, extend$3(Color, {

          brighter: function brighter(k) {
            k = k == null ? _brighter : Math.pow(_brighter, k);
            return new Hsl(this.h, this.s, this.l * k, this.opacity);
          brighter: function brighter(k) {
            k = k == null ? _brighter : Math.pow(_brighter, k);
            return new Hsl(this.h, this.s, this.l * k, this.opacity);


@@ -14855,13 +15894,13 @@
          return (h < 60 ? m1 + (m2 - m1) * h / 60 : h < 180 ? m2 : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60 : m1) * 255;
        }
 
          return (h < 60 ? m1 + (m2 - m1) * h / 60 : h < 180 ? m2 : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60 : m1) * 255;
        }
 

-       var constant$2 = (function (x) {
+       var constant$1 = (function (x) {

          return function () {
            return x;
          };
        });
 
          return function () {
            return x;
          };
        });
 

-       function linear(a, d) {
+       function linear$2(a, d) {

          return function (t) {
            return a + t * d;
          };
          return function (t) {
            return a + t * d;
          };


@@ -14874,12 +15913,12 @@
        }
        function gamma(y) {
          return (y = +y) === 1 ? nogamma : function (a, b) {
        }
        function gamma(y) {
          return (y = +y) === 1 ? nogamma : function (a, b) {

-           return b - a ? exponential(a, b, y) : constant$2(isNaN(a) ? b : a);
+           return b - a ? exponential(a, b, y) : constant$1(isNaN(a) ? b : a);

          };
        }
        function nogamma(a, b) {
          var d = b - a;
          };
        }
        function nogamma(a, b) {
          var d = b - a;

-         return d ? linear(a, d) : constant$2(isNaN(a) ? b : a);
+         return d ? linear$2(a, d) : constant$1(isNaN(a) ? b : a);

        }
 
        var d3_interpolateRgb = (function rgbGamma(y) {
        }
 
        var d3_interpolateRgb = (function rgbGamma(y) {


@@ -14928,7 +15967,7 @@
              i;
 
          for (i = 0; i < na; ++i) {
              i;
 
          for (i = 0; i < na; ++i) {

-           x[i] = interpolate(a[i], b[i]);
+           x[i] = interpolate$1(a[i], b[i]);

          }
 
          for (; i < nb; ++i) {
          }
 
          for (; i < nb; ++i) {


@@ -14966,7 +16005,7 @@
 
          for (k in b) {
            if (k in a) {
 
          for (k in b) {
            if (k in a) {

-             i[k] = interpolate(a[k], b[k]);
+             i[k] = interpolate$1(a[k], b[k]);

            } else {
              c[k] = b[k];
            }
            } else {
              c[k] = b[k];
            }


@@ -15056,11 +16095,11 @@
          });
        }
 
          });
        }
 

-       function interpolate (a, b) {
+       function interpolate$1 (a, b) {

          var t = _typeof(b),
              c;
 
          var t = _typeof(b),
              c;
 

-         return b == null || t === "boolean" ? constant$2(b) : (t === "number" ? d3_interpolateNumber : t === "string" ? (c = color(b)) ? (b = c, d3_interpolateRgb) : interpolateString : b instanceof color ? d3_interpolateRgb : b instanceof Date ? date : isNumberArray(b) ? numberArray : Array.isArray(b) ? genericArray : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object : d3_interpolateNumber)(a, b);
+         return b == null || t === "boolean" ? constant$1(b) : (t === "number" ? d3_interpolateNumber : t === "string" ? (c = color(b)) ? (b = c, d3_interpolateRgb) : interpolateString : b instanceof color ? d3_interpolateRgb : b instanceof Date ? date : isNumberArray(b) ? numberArray : Array.isArray(b) ? genericArray : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object : d3_interpolateNumber)(a, b);

        }
 
        function interpolateRound (a, b) {
        }
 
        function interpolateRound (a, b) {


@@ -15069,8 +16108,8 @@
          };
        }
 
          };
        }
 

-       var degrees$1 = 180 / Math.PI;
-       var identity$1 = {
+       var degrees = 180 / Math.PI;
+       var identity$3 = {

          translateX: 0,
          translateY: 0,
          rotate: 0,
          translateX: 0,
          translateY: 0,
          rotate: 0,


@@ -15087,8 +16126,8 @@
          return {
            translateX: e,
            translateY: f,
          return {
            translateX: e,
            translateY: f,

-           rotate: Math.atan2(b, a) * degrees$1,
-           skewX: Math.atan(skewX) * degrees$1,
+           rotate: Math.atan2(b, a) * degrees,
+           skewX: Math.atan(skewX) * degrees,

            scaleX: scaleX,
            scaleY: scaleY
          };
            scaleX: scaleX,
            scaleY: scaleY
          };


@@ -15099,13 +16138,13 @@
 
        function parseCss(value) {
          var m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + "");
 
        function parseCss(value) {
          var m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + "");

-         return m.isIdentity ? identity$1 : decompose(m.a, m.b, m.c, m.d, m.e, m.f);
+         return m.isIdentity ? identity$3 : decompose(m.a, m.b, m.c, m.d, m.e, m.f);

        }
        function parseSvg(value) {
        }
        function parseSvg(value) {

-         if (value == null) return identity$1;
+         if (value == null) return identity$3;

          if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g");
          svgNode.setAttribute("transform", value);
          if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g");
          svgNode.setAttribute("transform", value);

-         if (!(value = svgNode.transform.baseVal.consolidate())) return identity$1;
+         if (!(value = svgNode.transform.baseVal.consolidate())) return identity$3;

          value = value.matrix;
          return decompose(value.a, value.b, value.c, value.d, value.e, value.f);
        }
          value = value.matrix;
          return decompose(value.a, value.b, value.c, value.d, value.e, value.f);
        }


@@ -15198,7 +16237,7 @@
        var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)");
        var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")");
 
        var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)");
        var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")");
 

-       var epsilon2$1 = 1e-12;
+       var epsilon2 = 1e-12;

 
        function cosh(x) {
          return ((x = Math.exp(x)) + 1 / x) / 2;
 
        function cosh(x) {
          return ((x = Math.exp(x)) + 1 / x) / 2;


@@ -15228,7 +16267,7 @@
                i,
                S; // Special case for u0 ≅ u1.
 
                i,
                S; // Special case for u0 ≅ u1.
 

-           if (d2 < epsilon2$1) {
+           if (d2 < epsilon2) {

              S = Math.log(w1 / w0) / rho;
 
              i = function i(t) {
              S = Math.log(w1 / w0) / rho;
 
              i = function i(t) {


@@ -15276,10 +16315,13 @@
          return samples;
        }
 
          return samples;
        }
 

+       var $$m = _export;
+       var bind$2 = functionBind;
+

        // `Function.prototype.bind` method
        // `Function.prototype.bind` method

-       // https://tc39.github.io/ecma262/#sec-function.prototype.bind
-       _export({ target: 'Function', proto: true }, {
-         bind: functionBind
+       // https://tc39.es/ecma262/#sec-function.prototype.bind
+       $$m({ target: 'Function', proto: true }, {
+         bind: bind$2

        });
 
        var frame = 0,
        });
 
        var frame = 0,


@@ -15299,7 +16341,7 @@
            setFrame = (typeof window === "undefined" ? "undefined" : _typeof(window)) === "object" && window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : function (f) {
          setTimeout(f, 17);
        };
            setFrame = (typeof window === "undefined" ? "undefined" : _typeof(window)) === "object" && window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : function (f) {
          setTimeout(f, 17);
        };

-       function now() {
+       function now$1() {

          return clockNow || (setFrame(clearNow), clockNow = clock.now() + clockSkew);
        }
 
          return clockNow || (setFrame(clearNow), clockNow = clock.now() + clockSkew);
        }
 


@@ -15314,7 +16356,7 @@
          constructor: Timer,
          restart: function restart(callback, delay, time) {
            if (typeof callback !== "function") throw new TypeError("callback is not a function");
          constructor: Timer,
          restart: function restart(callback, delay, time) {
            if (typeof callback !== "function") throw new TypeError("callback is not a function");

-           time = (time == null ? now() : +time) + (delay == null ? 0 : +delay);
+           time = (time == null ? now$1() : +time) + (delay == null ? 0 : +delay);

 
            if (!this._next && taskTail !== this) {
              if (taskTail) taskTail._next = this;else taskHead = this;
 
            if (!this._next && taskTail !== this) {
              if (taskTail) taskTail._next = this;else taskHead = this;


@@ -15339,7 +16381,7 @@
          return t;
        }
        function timerFlush() {
          return t;
        }
        function timerFlush() {

-         now(); // Get the current time, if not already set.
+         now$1(); // Get the current time, if not already set.

 
          ++frame; // Pretend we’ve set an alarm, if we haven’t already.
 
 
          ++frame; // Pretend we’ve set an alarm, if we haven’t already.
 


@@ -15418,7 +16460,7 @@
          return t;
        }
 
          return t;
        }
 

-       var emptyOn = dispatch("start", "end", "cancel", "interrupt");
+       var emptyOn = dispatch$8("start", "end", "cancel", "interrupt");

        var emptyTween = [];
        var CREATED = 0;
        var SCHEDULED = 1;
        var emptyTween = [];
        var CREATED = 0;
        var SCHEDULED = 1;


@@ -15430,7 +16472,7 @@
        function schedule (node, name, id, index, group, timing) {
          var schedules = node.__transition;
          if (!schedules) node.__transition = {};else if (id in schedules) return;
        function schedule (node, name, id, index, group, timing) {
          var schedules = node.__transition;
          if (!schedules) node.__transition = {};else if (id in schedules) return;

-         create(node, id, {
+         create$3(node, id, {

            name: name,
            index: index,
            // For context during callback.
            name: name,
            index: index,
            // For context during callback.


@@ -15447,22 +16489,22 @@
          });
        }
        function init(node, id) {
          });
        }
        function init(node, id) {

-         var schedule = get$4(node, id);
+         var schedule = get$1(node, id);

          if (schedule.state > CREATED) throw new Error("too late; already scheduled");
          return schedule;
        }
          if (schedule.state > CREATED) throw new Error("too late; already scheduled");
          return schedule;
        }

-       function set$4(node, id) {
-         var schedule = get$4(node, id);
+       function set(node, id) {
+         var schedule = get$1(node, id);

          if (schedule.state > STARTED) throw new Error("too late; already running");
          return schedule;
        }
          if (schedule.state > STARTED) throw new Error("too late; already running");
          return schedule;
        }

-       function get$4(node, id) {
+       function get$1(node, id) {

          var schedule = node.__transition;
          if (!schedule || !(schedule = schedule[id])) throw new Error("transition not found");
          return schedule;
        }
 
          var schedule = node.__transition;
          if (!schedule || !(schedule = schedule[id])) throw new Error("transition not found");
          return schedule;
        }
 

-       function create(node, id, self) {
+       function create$3(node, id, self) {

          var schedules = node.__transition,
              tween; // Initialize the self timer when the transition is created.
          // Note the actual delay is not known until the first callback!
          var schedules = node.__transition,
              tween; // Initialize the self timer when the transition is created.
          // Note the actual delay is not known until the first callback!


@@ -15598,7 +16640,7 @@
        function tweenRemove(id, name) {
          var tween0, tween1;
          return function () {
        function tweenRemove(id, name) {
          var tween0, tween1;
          return function () {

-           var schedule = set$4(this, id),
+           var schedule = set(this, id),

                tween = schedule.tween; // If this node shared tween with the previous node,
            // just assign the updated shared tween and we’re done!
            // Otherwise, copy-on-write.
                tween = schedule.tween; // If this node shared tween with the previous node,
            // just assign the updated shared tween and we’re done!
            // Otherwise, copy-on-write.


@@ -15623,7 +16665,7 @@
          var tween0, tween1;
          if (typeof value !== "function") throw new Error();
          return function () {
          var tween0, tween1;
          if (typeof value !== "function") throw new Error();
          return function () {

-           var schedule = set$4(this, id),
+           var schedule = set(this, id),

                tween = schedule.tween; // If this node shared tween with the previous node,
            // just assign the updated shared tween and we’re done!
            // Otherwise, copy-on-write.
                tween = schedule.tween; // If this node shared tween with the previous node,
            // just assign the updated shared tween and we’re done!
            // Otherwise, copy-on-write.


@@ -15653,7 +16695,7 @@
          name += "";
 
          if (arguments.length < 2) {
          name += "";
 
          if (arguments.length < 2) {

-           var tween = get$4(this.node(), id).tween;
+           var tween = get$1(this.node(), id).tween;

 
            for (var i = 0, n = tween.length, t; i < n; ++i) {
              if ((t = tween[i]).name === name) {
 
            for (var i = 0, n = tween.length, t; i < n; ++i) {
              if ((t = tween[i]).name === name) {


@@ -15669,32 +16711,32 @@
        function tweenValue(transition, name, value) {
          var id = transition._id;
          transition.each(function () {
        function tweenValue(transition, name, value) {
          var id = transition._id;
          transition.each(function () {

-           var schedule = set$4(this, id);
+           var schedule = set(this, id);

            (schedule.value || (schedule.value = {}))[name] = value.apply(this, arguments);
          });
          return function (node) {
            (schedule.value || (schedule.value = {}))[name] = value.apply(this, arguments);
          });
          return function (node) {

-           return get$4(node, id).value[name];
+           return get$1(node, id).value[name];

          };
        }
 
          };
        }
 

-       function interpolate$1 (a, b) {
+       function interpolate (a, b) {

          var c;
          return (typeof b === "number" ? d3_interpolateNumber : b instanceof color ? d3_interpolateRgb : (c = color(b)) ? (b = c, d3_interpolateRgb) : interpolateString)(a, b);
        }
 
          var c;
          return (typeof b === "number" ? d3_interpolateNumber : b instanceof color ? d3_interpolateRgb : (c = color(b)) ? (b = c, d3_interpolateRgb) : interpolateString)(a, b);
        }
 

-       function attrRemove$1(name) {
+       function attrRemove(name) {

          return function () {
            this.removeAttribute(name);
          };
        }
 
          return function () {
            this.removeAttribute(name);
          };
        }
 

-       function attrRemoveNS$1(fullname) {
+       function attrRemoveNS(fullname) {

          return function () {
            this.removeAttributeNS(fullname.space, fullname.local);
          };
        }
 
          return function () {
            this.removeAttributeNS(fullname.space, fullname.local);
          };
        }
 

-       function attrConstant$1(name, interpolate, value1) {
+       function attrConstant(name, interpolate, value1) {

          var string00,
              string1 = value1 + "",
              interpolate0;
          var string00,
              string1 = value1 + "",
              interpolate0;


@@ -15704,7 +16746,7 @@
          };
        }
 
          };
        }
 

-       function attrConstantNS$1(fullname, interpolate, value1) {
+       function attrConstantNS(fullname, interpolate, value1) {

          var string00,
              string1 = value1 + "",
              interpolate0;
          var string00,
              string1 = value1 + "",
              interpolate0;


@@ -15714,7 +16756,7 @@
          };
        }
 
          };
        }
 

-       function attrFunction$1(name, interpolate, value) {
+       function attrFunction(name, interpolate, value) {

          var string00, string10, interpolate0;
          return function () {
            var string0,
          var string00, string10, interpolate0;
          return function () {
            var string0,


@@ -15727,7 +16769,7 @@
          };
        }
 
          };
        }
 

-       function attrFunctionNS$1(fullname, interpolate, value) {
+       function attrFunctionNS(fullname, interpolate, value) {

          var string00, string10, interpolate0;
          return function () {
            var string0,
          var string00, string10, interpolate0;
          return function () {
            var string0,


@@ -15742,8 +16784,8 @@
 
        function transition_attr (name, value) {
          var fullname = namespace(name),
 
        function transition_attr (name, value) {
          var fullname = namespace(name),

-             i = fullname === "transform" ? interpolateTransformSvg : interpolate$1;
-         return this.attrTween(name, typeof value === "function" ? (fullname.local ? attrFunctionNS$1 : attrFunction$1)(fullname, i, tweenValue(this, "attr." + name, value)) : value == null ? (fullname.local ? attrRemoveNS$1 : attrRemove$1)(fullname) : (fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, i, value));
+             i = fullname === "transform" ? interpolateTransformSvg : interpolate;
+         return this.attrTween(name, typeof value === "function" ? (fullname.local ? attrFunctionNS : attrFunction)(fullname, i, tweenValue(this, "attr." + name, value)) : value == null ? (fullname.local ? attrRemoveNS : attrRemove)(fullname) : (fullname.local ? attrConstantNS : attrConstant)(fullname, i, value));

        }
 
        function attrInterpolate(name, i) {
        }
 
        function attrInterpolate(name, i) {


@@ -15807,43 +16849,43 @@
 
        function transition_delay (value) {
          var id = this._id;
 
        function transition_delay (value) {
          var id = this._id;

-         return arguments.length ? this.each((typeof value === "function" ? delayFunction : delayConstant)(id, value)) : get$4(this.node(), id).delay;
+         return arguments.length ? this.each((typeof value === "function" ? delayFunction : delayConstant)(id, value)) : get$1(this.node(), id).delay;

        }
 
        function durationFunction(id, value) {
          return function () {
        }
 
        function durationFunction(id, value) {
          return function () {

-           set$4(this, id).duration = +value.apply(this, arguments);
+           set(this, id).duration = +value.apply(this, arguments);

          };
        }
 
        function durationConstant(id, value) {
          return value = +value, function () {
          };
        }
 
        function durationConstant(id, value) {
          return value = +value, function () {

-           set$4(this, id).duration = value;
+           set(this, id).duration = value;

          };
        }
 
        function transition_duration (value) {
          var id = this._id;
          };
        }
 
        function transition_duration (value) {
          var id = this._id;

-         return arguments.length ? this.each((typeof value === "function" ? durationFunction : durationConstant)(id, value)) : get$4(this.node(), id).duration;
+         return arguments.length ? this.each((typeof value === "function" ? durationFunction : durationConstant)(id, value)) : get$1(this.node(), id).duration;

        }
 
        function easeConstant(id, value) {
          if (typeof value !== "function") throw new Error();
          return function () {
        }
 
        function easeConstant(id, value) {
          if (typeof value !== "function") throw new Error();
          return function () {

-           set$4(this, id).ease = value;
+           set(this, id).ease = value;

          };
        }
 
        function transition_ease (value) {
          var id = this._id;
          };
        }
 
        function transition_ease (value) {
          var id = this._id;

-         return arguments.length ? this.each(easeConstant(id, value)) : get$4(this.node(), id).ease;
+         return arguments.length ? this.each(easeConstant(id, value)) : get$1(this.node(), id).ease;

        }
 
        function easeVarying(id, value) {
          return function () {
            var v = value.apply(this, arguments);
            if (typeof v !== "function") throw new Error();
        }
 
        function easeVarying(id, value) {
          return function () {
            var v = value.apply(this, arguments);
            if (typeof v !== "function") throw new Error();

-           set$4(this, id).ease = v;
+           set(this, id).ease = v;

          };
        }
 
          };
        }
 


@@ -15895,7 +16937,7 @@
        function onFunction(id, name, listener) {
          var on0,
              on1,
        function onFunction(id, name, listener) {
          var on0,
              on1,

-             sit = start(name) ? init : set$4;
+             sit = start(name) ? init : set;

          return function () {
            var schedule = sit(this, id),
                on = schedule.on; // If this node shared a dispatch with the previous node,
          return function () {
            var schedule = sit(this, id),
                on = schedule.on; // If this node shared a dispatch with the previous node,


@@ -15909,7 +16951,7 @@
 
        function transition_on (name, listener) {
          var id = this._id;
 
        function transition_on (name, listener) {
          var id = this._id;

-         return arguments.length < 2 ? get$4(this.node(), id).on.on(name) : this.each(onFunction(id, name, listener));
+         return arguments.length < 2 ? get$1(this.node(), id).on.on(name) : this.each(onFunction(id, name, listener));

        }
 
        function removeFunction(id) {
        }
 
        function removeFunction(id) {


@@ -15938,7 +16980,7 @@
              if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
                if ("__data__" in node) subnode.__data__ = node.__data__;
                subgroup[i] = subnode;
              if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
                if ("__data__" in node) subnode.__data__ = node.__data__;
                subgroup[i] = subnode;

-               schedule(subgroup[i], name, id, i, subgroup, get$4(node, id));
+               schedule(subgroup[i], name, id, i, subgroup, get$1(node, id));

              }
            }
          }
              }
            }
          }


@@ -15954,7 +16996,7 @@
          for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
            for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
              if (node = group[i]) {
          for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
            for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
              if (node = group[i]) {

-               for (var children = select.call(node, node.__data__, i, group), child, inherit = get$4(node, id), k = 0, l = children.length; k < l; ++k) {
+               for (var children = select.call(node, node.__data__, i, group), child, inherit = get$1(node, id), k = 0, l = children.length; k < l; ++k) {

                  if (child = children[k]) {
                    schedule(child, name, id, k, children, inherit);
                  }
                  if (child = children[k]) {
                    schedule(child, name, id, k, children, inherit);
                  }


@@ -15969,9 +17011,9 @@
          return new Transition(subgroups, parents, name, id);
        }
 
          return new Transition(subgroups, parents, name, id);
        }
 

-       var Selection$1 = selection.prototype.constructor;
+       var Selection = selection.prototype.constructor;

        function transition_selection () {
        function transition_selection () {

-         return new Selection$1(this._groups, this._parents);
+         return new Selection(this._groups, this._parents);

        }
 
        function styleNull(name, interpolate) {
        }
 
        function styleNull(name, interpolate) {


@@ -15983,13 +17025,13 @@
          };
        }
 
          };
        }
 

-       function styleRemove$1(name) {
+       function styleRemove(name) {

          return function () {
            this.style.removeProperty(name);
          };
        }
 
          return function () {
            this.style.removeProperty(name);
          };
        }
 

-       function styleConstant$1(name, interpolate, value1) {
+       function styleConstant(name, interpolate, value1) {

          var string00,
              string1 = value1 + "",
              interpolate0;
          var string00,
              string1 = value1 + "",
              interpolate0;


@@ -15999,7 +17041,7 @@
          };
        }
 
          };
        }
 

-       function styleFunction$1(name, interpolate, value) {
+       function styleFunction(name, interpolate, value) {

          var string00, string10, interpolate0;
          return function () {
            var string0 = styleValue(this, name),
          var string00, string10, interpolate0;
          return function () {
            var string0 = styleValue(this, name),


@@ -16018,9 +17060,9 @@
              event = "end." + key,
              remove;
          return function () {
              event = "end." + key,
              remove;
          return function () {

-           var schedule = set$4(this, id),
+           var schedule = set(this, id),

                on = schedule.on,
                on = schedule.on,

-               listener = schedule.value[key] == null ? remove || (remove = styleRemove$1(name)) : undefined; // If this node shared a dispatch with the previous node,
+               listener = schedule.value[key] == null ? remove || (remove = styleRemove(name)) : undefined; // If this node shared a dispatch with the previous node,

            // just assign the updated shared dispatch and we’re done!
            // Otherwise, copy-on-write.
 
            // just assign the updated shared dispatch and we’re done!
            // Otherwise, copy-on-write.
 


@@ -16030,8 +17072,8 @@
        }
 
        function transition_style (name, value, priority) {
        }
 
        function transition_style (name, value, priority) {

-         var i = (name += "") === "transform" ? interpolateTransformCss : interpolate$1;
-         return value == null ? this.styleTween(name, styleNull(name, i)).on("end.style." + name, styleRemove$1(name)) : typeof value === "function" ? this.styleTween(name, styleFunction$1(name, i, tweenValue(this, "style." + name, value))).each(styleMaybeRemove(this._id, name)) : this.styleTween(name, styleConstant$1(name, i, value), priority).on("end.style." + name, null);
+         var i = (name += "") === "transform" ? interpolateTransformCss : interpolate;
+         return value == null ? this.styleTween(name, styleNull(name, i)).on("end.style." + name, styleRemove(name)) : typeof value === "function" ? this.styleTween(name, styleFunction(name, i, tweenValue(this, "style." + name, value))).each(styleMaybeRemove(this._id, name)) : this.styleTween(name, styleConstant(name, i, value), priority).on("end.style." + name, null);

        }
 
        function styleInterpolate(name, i, priority) {
        }
 
        function styleInterpolate(name, i, priority) {


@@ -16061,13 +17103,13 @@
          return this.tween(key, styleTween(name, value, priority == null ? "" : priority));
        }
 
          return this.tween(key, styleTween(name, value, priority == null ? "" : priority));
        }
 

-       function textConstant$1(value) {
+       function textConstant(value) {

          return function () {
            this.textContent = value;
          };
        }
 
          return function () {
            this.textContent = value;
          };
        }
 

-       function textFunction$1(value) {
+       function textFunction(value) {

          return function () {
            var value1 = value(this);
            this.textContent = value1 == null ? "" : value1;
          return function () {
            var value1 = value(this);
            this.textContent = value1 == null ? "" : value1;


@@ -16075,7 +17117,7 @@
        }
 
        function transition_text (value) {
        }
 
        function transition_text (value) {

-         return this.tween("text", typeof value === "function" ? textFunction$1(tweenValue(this, "text", value)) : textConstant$1(value == null ? "" : value + ""));
+         return this.tween("text", typeof value === "function" ? textFunction(tweenValue(this, "text", value)) : textConstant(value == null ? "" : value + ""));

        }
 
        function textInterpolate(i) {
        }
 
        function textInterpolate(i) {


@@ -16113,7 +17155,7 @@
          for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {
            for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
              if (node = group[i]) {
          for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {
            for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
              if (node = group[i]) {

-               var inherit = get$4(node, id0);
+               var inherit = get$1(node, id0);

                schedule(node, name, id1, i, group, {
                  time: inherit.time + inherit.delay + inherit.duration,
                  delay: 0,
                schedule(node, name, id1, i, group, {
                  time: inherit.time + inherit.delay + inherit.duration,
                  delay: 0,


@@ -16143,7 +17185,7 @@
              }
            };
            that.each(function () {
              }
            };
            that.each(function () {

-             var schedule = set$4(this, id),
+             var schedule = set(this, id),

                  on = schedule.on; // If this node shared a dispatch with the previous node,
              // just assign the updated shared dispatch and we’re done!
              // Otherwise, copy-on-write.
                  on = schedule.on; // If this node shared a dispatch with the previous node,
              // just assign the updated shared dispatch and we’re done!
              // Otherwise, copy-on-write.


@@ -16165,21 +17207,18 @@
          });
        }
 
          });
        }
 

-       var id$1 = 0;
+       var id = 0;

        function Transition(groups, parents, name, id) {
          this._groups = groups;
          this._parents = parents;
          this._name = name;
          this._id = id;
        }
        function Transition(groups, parents, name, id) {
          this._groups = groups;
          this._parents = parents;
          this._name = name;
          this._id = id;
        }

-       function transition(name) {
-         return selection().transition(name);
-       }

        function newId() {
        function newId() {

-         return ++id$1;
+         return ++id;

        }
        var selection_prototype = selection.prototype;
        }
        var selection_prototype = selection.prototype;

-       Transition.prototype = transition.prototype = _defineProperty({
+       Transition.prototype = _defineProperty({

          constructor: Transition,
          select: transition_select,
          selectAll: transition_selectAll,
          constructor: Transition,
          select: transition_select,
          selectAll: transition_selectAll,


@@ -16243,7 +17282,7 @@
          if (name instanceof Transition) {
            id = name._id, name = name._name;
          } else {
          if (name instanceof Transition) {
            id = name._id, name = name._name;
          } else {

-           id = newId(), (timing = defaultTiming).time = now(), name = name == null ? null : name + "";
+           id = newId(), (timing = defaultTiming).time = now$1(), name = name == null ? null : name + "";

          }
 
          for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {
          }
 
          for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {


@@ -16260,7 +17299,7 @@
        selection.prototype.interrupt = selection_interrupt;
        selection.prototype.transition = selection_transition;
 
        selection.prototype.interrupt = selection_interrupt;
        selection.prototype.transition = selection_transition;
 

-       var constant$3 = (function (x) {
+       var constant = (function (x) {

          return function () {
            return x;
          };
          return function () {
            return x;
          };


@@ -16341,10 +17380,10 @@
        };
        var identity$2 = new Transform(1, 0, 0);
 
        };
        var identity$2 = new Transform(1, 0, 0);
 

-       function nopropagation$1(event) {
+       function nopropagation(event) {

          event.stopImmediatePropagation();
        }
          event.stopImmediatePropagation();
        }

-       function noevent$1 (event) {
+       function noevent (event) {

          event.preventDefault();
          event.stopImmediatePropagation();
        }
          event.preventDefault();
          event.stopImmediatePropagation();
        }


@@ -16355,7 +17394,7 @@
          return (!event.ctrlKey || event.type === 'wheel') && !event.button;
        }
 
          return (!event.ctrlKey || event.type === 'wheel') && !event.button;
        }
 

-       function defaultExtent() {
+       function defaultExtent$1() {

          var e = this;
 
          if (e instanceof SVGElement) {
          var e = this;
 
          if (e instanceof SVGElement) {


@@ -16376,15 +17415,15 @@
          return this.__zoom || identity$2;
        }
 
          return this.__zoom || identity$2;
        }
 

-       function defaultWheelDelta(event) {
+       function defaultWheelDelta$1(event) {

          return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1);
        }
 
          return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1);
        }
 

-       function defaultTouchable$1() {
+       function defaultTouchable() {

          return navigator.maxTouchPoints || "ontouchstart" in this;
        }
 
          return navigator.maxTouchPoints || "ontouchstart" in this;
        }
 

-       function defaultConstrain(transform, extent, translateExtent) {
+       function defaultConstrain$1(transform, extent, translateExtent) {

          var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
              dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
              dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],
          var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
              dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
              dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],


@@ -16394,15 +17433,15 @@
 
        function d3_zoom () {
          var filter = defaultFilter$1,
 
        function d3_zoom () {
          var filter = defaultFilter$1,

-             extent = defaultExtent,
-             constrain = defaultConstrain,
-             wheelDelta = defaultWheelDelta,
-             touchable = defaultTouchable$1,
+             extent = defaultExtent$1,
+             constrain = defaultConstrain$1,
+             wheelDelta = defaultWheelDelta$1,
+             touchable = defaultTouchable,

              scaleExtent = [0, Infinity],
              translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
              duration = 250,
              interpolate = interpolateZoom,
              scaleExtent = [0, Infinity],
              translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
              duration = 250,
              interpolate = interpolateZoom,

-             listeners = dispatch("start", "zoom", "end"),
+             listeners = dispatch$8("start", "zoom", "end"),

              touchstarting,
              touchfirst,
              touchending,
              touchstarting,
              touchfirst,
              touchending,


@@ -16584,7 +17623,7 @@
                  g.start();
                }
 
                  g.start();
                }
 

-           noevent$1(event);
+           noevent(event);

            g.wheel = setTimeout(wheelidled, wheelDelay);
            g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
 
            g.wheel = setTimeout(wheelidled, wheelDelay);
            g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
 


@@ -16607,13 +17646,13 @@
                x0 = event.clientX,
                y0 = event.clientY;
            dragDisable(event.view);
                x0 = event.clientX,
                y0 = event.clientY;
            dragDisable(event.view);

-           nopropagation$1(event);
+           nopropagation(event);

            g.mouse = [p, this.__zoom.invert(p)];
            interrupt(this);
            g.start();
 
            function mousemoved(event) {
            g.mouse = [p, this.__zoom.invert(p)];
            interrupt(this);
            g.start();
 
            function mousemoved(event) {

-             noevent$1(event);
+             noevent(event);

 
              if (!g.moved) {
                var dx = event.clientX - x0,
 
              if (!g.moved) {
                var dx = event.clientX - x0,


@@ -16627,7 +17666,7 @@
            function mouseupped(event) {
              v.on("mousemove.zoom mouseup.zoom", null);
              yesdrag(event.view, g.moved);
            function mouseupped(event) {
              v.on("mousemove.zoom mouseup.zoom", null);
              yesdrag(event.view, g.moved);

-             noevent$1(event);
+             noevent(event);

              g.event(event).end();
            }
          }
              g.event(event).end();
            }
          }


@@ -16643,7 +17682,7 @@
                p1 = t0.invert(p0),
                k1 = t0.k * (event.shiftKey ? 0.5 : 2),
                t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent);
                p1 = t0.invert(p0),
                k1 = t0.k * (event.shiftKey ? 0.5 : 2),
                t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent);

-           noevent$1(event);
+           noevent(event);

            if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0, event);else select(this).call(zoom.transform, t1, p0, event);
          }
 
            if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0, event);else select(this).call(zoom.transform, t1, p0, event);
          }
 


@@ -16660,7 +17699,7 @@
                i,
                t,
                p;
                i,
                t,
                p;

-           nopropagation$1(event);
+           nopropagation(event);

 
            for (i = 0; i < n; ++i) {
              t = touches[i], p = pointer(t, this);
 
            for (i = 0; i < n; ++i) {
              t = touches[i], p = pointer(t, this);


@@ -16693,7 +17732,7 @@
                t,
                p,
                l;
                t,
                p,
                l;

-           noevent$1(event);
+           noevent(event);

 
            for (i = 0; i < n; ++i) {
              t = touches[i], p = pointer(t, this);
 
            for (i = 0; i < n; ++i) {
              t = touches[i], p = pointer(t, this);


@@ -16728,7 +17767,7 @@
                n = touches.length,
                i,
                t;
                n = touches.length,
                i,
                t;

-           nopropagation$1(event);
+           nopropagation(event);

            if (touchending) clearTimeout(touchending);
            touchending = setTimeout(function () {
              touchending = null;
            if (touchending) clearTimeout(touchending);
            touchending = setTimeout(function () {
              touchending = null;


@@ -16755,19 +17794,19 @@
          }
 
          zoom.wheelDelta = function (_) {
          }
 
          zoom.wheelDelta = function (_) {

-           return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant$3(+_), zoom) : wheelDelta;
+           return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta;

          };
 
          zoom.filter = function (_) {
          };
 
          zoom.filter = function (_) {

-           return arguments.length ? (filter = typeof _ === "function" ? _ : constant$3(!!_), zoom) : filter;
+           return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter;

          };
 
          zoom.touchable = function (_) {
          };
 
          zoom.touchable = function (_) {

-           return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$3(!!_), zoom) : touchable;
+           return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable;

          };
 
          zoom.extent = function (_) {
          };
 
          zoom.extent = function (_) {

-           return arguments.length ? (extent = typeof _ === "function" ? _ : constant$3([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
+           return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;

          };
 
          zoom.scaleExtent = function (_) {
          };
 
          zoom.scaleExtent = function (_) {


@@ -16955,16 +17994,21 @@
          return score;
        }
 
          return score;
        }
 

-       var onFreeze = internalMetadata.onFreeze;
+       var $$l = _export;
+       var FREEZING = freezing;
+       var fails$9 = fails$N;
+       var isObject$4 = isObject$r;
+       var onFreeze = internalMetadata.exports.onFreeze;

 
 

-       var nativeFreeze = Object.freeze;
-       var FAILS_ON_PRIMITIVES$4 = fails(function () { nativeFreeze(1); });
+       // eslint-disable-next-line es/no-object-freeze -- safe
+       var $freeze = Object.freeze;
+       var FAILS_ON_PRIMITIVES = fails$9(function () { $freeze(1); });

 
        // `Object.freeze` method
 
        // `Object.freeze` method

-       // https://tc39.github.io/ecma262/#sec-object.freeze
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$4, sham: !freezing }, {
+       // https://tc39.es/ecma262/#sec-object.freeze
+       $$l({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {

          freeze: function freeze(it) {
          freeze: function freeze(it) {

-           return nativeFreeze && isObject(it) ? nativeFreeze(onFreeze(it)) : it;
+           return $freeze && isObject$4(it) ? $freeze(onFreeze(it)) : it;

          }
        });
 
          }
        });
 


@@ -17112,36 +18156,123 @@
          }, []);
        }
 
          }, []);
        }
 

+       var DESCRIPTORS$2 = descriptors;
+       var global$2 = global$F;
+       var isForced = isForced_1;
+       var redefine$1 = redefine$g.exports;
+       var has = has$j;
+       var classof$1 = classofRaw$1;
+       var inheritIfRequired = inheritIfRequired$4;
+       var toPrimitive$1 = toPrimitive$7;
+       var fails$8 = fails$N;
+       var create$2 = objectCreate;
+       var getOwnPropertyNames = objectGetOwnPropertyNames.f;
+       var getOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
+       var defineProperty = objectDefineProperty.f;
+       var trim$2 = stringTrim.trim;
+
+       var NUMBER = 'Number';
+       var NativeNumber = global$2[NUMBER];
+       var NumberPrototype = NativeNumber.prototype;
+
+       // Opera ~12 has broken Object#toString
+       var BROKEN_CLASSOF = classof$1(create$2(NumberPrototype)) == NUMBER;
+
+       // `ToNumber` abstract operation
+       // https://tc39.es/ecma262/#sec-tonumber
+       var toNumber$1 = function (argument) {
+         var it = toPrimitive$1(argument, false);
+         var first, third, radix, maxCode, digits, length, index, code;
+         if (typeof it == 'string' && it.length > 2) {
+           it = trim$2(it);
+           first = it.charCodeAt(0);
+           if (first === 43 || first === 45) {
+             third = it.charCodeAt(2);
+             if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
+           } else if (first === 48) {
+             switch (it.charCodeAt(1)) {
+               case 66: case 98: radix = 2; maxCode = 49; break; // fast equal of /^0b[01]+$/i
+               case 79: case 111: radix = 8; maxCode = 55; break; // fast equal of /^0o[0-7]+$/i
+               default: return +it;
+             }
+             digits = it.slice(2);
+             length = digits.length;
+             for (index = 0; index < length; index++) {
+               code = digits.charCodeAt(index);
+               // parseInt parses a string to a first unavailable symbol
+               // but ToNumber should return NaN if a string contains unavailable symbols
+               if (code < 48 || code > maxCode) return NaN;
+             } return parseInt(digits, radix);
+           }
+         } return +it;
+       };
+
+       // `Number` constructor
+       // https://tc39.es/ecma262/#sec-number-constructor
+       if (isForced(NUMBER, !NativeNumber(' 0o1') || !NativeNumber('0b1') || NativeNumber('+0x1'))) {
+         var NumberWrapper = function Number(value) {
+           var it = arguments.length < 1 ? 0 : value;
+           var dummy = this;
+           return dummy instanceof NumberWrapper
+             // check on 1..constructor(foo) case
+             && (BROKEN_CLASSOF ? fails$8(function () { NumberPrototype.valueOf.call(dummy); }) : classof$1(dummy) != NUMBER)
+               ? inheritIfRequired(new NativeNumber(toNumber$1(it)), dummy, NumberWrapper) : toNumber$1(it);
+         };
+         for (var keys = DESCRIPTORS$2 ? getOwnPropertyNames(NativeNumber) : (
+           // ES3:
+           'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
+           // ES2015 (in case, if modules with ES2015 Number statics required before):
+           'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
+           'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger,' +
+           // ESNext
+           'fromString,range'
+         ).split(','), j$1 = 0, key; keys.length > j$1; j$1++) {
+           if (has(NativeNumber, key = keys[j$1]) && !has(NumberWrapper, key)) {
+             defineProperty(NumberWrapper, key, getOwnPropertyDescriptor$2(NativeNumber, key));
+           }
+         }
+         NumberWrapper.prototype = NumberPrototype;
+         NumberPrototype.constructor = NumberWrapper;
+         redefine$1(global$2, NUMBER, NumberWrapper);
+       }
+
+       var fixRegExpWellKnownSymbolLogic$1 = fixRegexpWellKnownSymbolLogic;
+       var anObject$1 = anObject$m;
+       var toLength$3 = toLength$q;
+       var requireObjectCoercible$7 = requireObjectCoercible$e;
+       var advanceStringIndex = advanceStringIndex$3;
+       var regExpExec$1 = regexpExecAbstract;
+

        // @@match logic
        // @@match logic

-       fixRegexpWellKnownSymbolLogic('match', 1, function (MATCH, nativeMatch, maybeCallNative) {
+       fixRegExpWellKnownSymbolLogic$1('match', function (MATCH, nativeMatch, maybeCallNative) {

          return [
            // `String.prototype.match` method
          return [
            // `String.prototype.match` method

-           // https://tc39.github.io/ecma262/#sec-string.prototype.match
+           // https://tc39.es/ecma262/#sec-string.prototype.match

            function match(regexp) {
            function match(regexp) {

-             var O = requireObjectCoercible(this);
+             var O = requireObjectCoercible$7(this);

              var matcher = regexp == undefined ? undefined : regexp[MATCH];
              return matcher !== undefined ? matcher.call(regexp, O) : new RegExp(regexp)[MATCH](String(O));
            },
            // `RegExp.prototype[@@match]` method
              var matcher = regexp == undefined ? undefined : regexp[MATCH];
              return matcher !== undefined ? matcher.call(regexp, O) : new RegExp(regexp)[MATCH](String(O));
            },
            // `RegExp.prototype[@@match]` method

-           // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@match
-           function (regexp) {
-             var res = maybeCallNative(nativeMatch, regexp, this);
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@match
+           function (string) {
+             var res = maybeCallNative(nativeMatch, this, string);

              if (res.done) return res.value;
 
              if (res.done) return res.value;
 

-             var rx = anObject(regexp);
-             var S = String(this);
+             var rx = anObject$1(this);
+             var S = String(string);

 
 

-             if (!rx.global) return regexpExecAbstract(rx, S);
+             if (!rx.global) return regExpExec$1(rx, S);

 
              var fullUnicode = rx.unicode;
              rx.lastIndex = 0;
              var A = [];
              var n = 0;
              var result;
 
              var fullUnicode = rx.unicode;
              rx.lastIndex = 0;
              var A = [];
              var n = 0;
              var result;

-             while ((result = regexpExecAbstract(rx, S)) !== null) {
+             while ((result = regExpExec$1(rx, S)) !== null) {

                var matchStr = String(result[0]);
                A[n] = matchStr;
                var matchStr = String(result[0]);
                A[n] = matchStr;

-               if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
+               if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength$3(rx.lastIndex), fullUnicode);

                n++;
              }
              return n === 0 ? null : A;
                n++;
              }
              return n === 0 ? null : A;


@@ -17149,7 +18280,9 @@
          ];
        });
 
          ];
        });
 

-       var remove$1 = removeDiacritics;
+       var diacritics = {};
+
+       var remove$6 = diacritics.remove = removeDiacritics;

        var replacementList = [{
          base: ' ',
          chars: "\xA0"
        var replacementList = [{
          base: ' ',
          chars: "\xA0"


@@ -17447,11 +18580,11 @@
        }];
        var diacriticsMap = {};
 
        }];
        var diacriticsMap = {};
 

-       for (var i = 0; i < replacementList.length; i += 1) {
-         var chars = replacementList[i].chars;
+       for (var i$1 = 0; i$1 < replacementList.length; i$1 += 1) {
+         var chars = replacementList[i$1].chars;

 
 

-         for (var j$1 = 0; j$1 < chars.length; j$1 += 1) {
-           diacriticsMap[chars[j$1]] = replacementList[i].base;
+         for (var j = 0; j < chars.length; j += 1) {
+           diacriticsMap[chars[j]] = replacementList[i$1].base;

          }
        }
 
          }
        }
 


@@ -17461,2185 +18594,2198 @@
          });
        }
 
          });
        }
 

-       var replacementList_1 = replacementList;
-       var diacriticsMap_1 = diacriticsMap;
-       var diacritics = {
-         remove: remove$1,
-         replacementList: replacementList_1,
-         diacriticsMap: diacriticsMap_1
-       };
+       diacritics.replacementList = replacementList;
+       diacritics.diacriticsMap = diacriticsMap;

 
 

-       var isArabic_1 = createCommonjsModule(function (module, exports) {
+       var lib = {};

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         var arabicBlocks = [[0x0600, 0x06FF], [0x0750, 0x077F], [0x08A0, 0x08FF], [0xFB50, 0xFDFF], [0xFE70, 0xFEFF], [0x10E60, 0x10E7F], [0x1EC70, 0x1ECBF], [0x1EE00, 0x1EEFF] // Mathematical Alphabetic symbols https://www.unicode.org/charts/PDF/U1EE00.pdf
-         ];
+       var isArabic$1 = {};

 
 

-         function isArabic(_char) {
-           if (_char.length > 1) {
-             // allow the newer chars?
-             throw new Error('isArabic works on only one-character strings');
-           }
+       Object.defineProperty(isArabic$1, "__esModule", {
+         value: true
+       });
+       var arabicBlocks = [[0x0600, 0x06FF], [0x0750, 0x077F], [0x08A0, 0x08FF], [0xFB50, 0xFDFF], [0xFE70, 0xFEFF], [0x10E60, 0x10E7F], [0x1EC70, 0x1ECBF], [0x1EE00, 0x1EEFF] // Mathematical Alphabetic symbols https://www.unicode.org/charts/PDF/U1EE00.pdf
+       ];

 
 

-           var code = _char.charCodeAt(0);
+       function isArabic(_char) {
+         if (_char.length > 1) {
+           // allow the newer chars?
+           throw new Error('isArabic works on only one-character strings');
+         }

 
 

-           for (var i = 0; i < arabicBlocks.length; i++) {
-             var block = arabicBlocks[i];
+         var code = _char.charCodeAt(0);

 
 

-             if (code >= block[0] && code <= block[1]) {
-               return true;
-             }
-           }
+         for (var i = 0; i < arabicBlocks.length; i++) {
+           var block = arabicBlocks[i];

 
 

-           return false;
+           if (code >= block[0] && code <= block[1]) {
+             return true;
+           }

          }
 
          }
 

-         exports.isArabic = isArabic;
-
-         function isMath(_char2) {
-           if (_char2.length > 2) {
-             // allow the newer chars?
-             throw new Error('isMath works on only one-character strings');
-           }
+         return false;
+       }

 
 

-           var code = _char2.charCodeAt(0);
+       isArabic$1.isArabic = isArabic;

 
 

-           return code >= 0x660 && code <= 0x66C || code >= 0x6F0 && code <= 0x6F9;
+       function isMath(_char2) {
+         if (_char2.length > 2) {
+           // allow the newer chars?
+           throw new Error('isMath works on only one-character strings');

          }
 
          }
 

-         exports.isMath = isMath;
-       });
+         var code = _char2.charCodeAt(0);

 
 

-       var unicodeArabic = createCommonjsModule(function (module, exports) {
+         return code >= 0x660 && code <= 0x66C || code >= 0x6F0 && code <= 0x6F9;
+       }

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         var arabicReference = {
-           "alef": {
-             "normal": ["\u0627"],
-             "madda_above": {
-               "normal": ["\u0627\u0653", "\u0622"],
-               "isolated": "\uFE81",
-               "final": "\uFE82"
-             },
-             "hamza_above": {
-               "normal": ["\u0627\u0654", "\u0623"],
-               "isolated": "\uFE83",
-               "final": "\uFE84"
-             },
-             "hamza_below": {
-               "normal": ["\u0627\u0655", "\u0625"],
-               "isolated": "\uFE87",
-               "final": "\uFE88"
-             },
-             "wasla": {
-               "normal": "\u0671",
-               "isolated": "\uFB50",
-               "final": "\uFB51"
-             },
-             "wavy_hamza_above": ["\u0672"],
-             "wavy_hamza_below": ["\u0627\u065F", "\u0673"],
-             "high_hamza": ["\u0675", "\u0627\u0674"],
-             "indic_two_above": ["\u0773"],
-             "indic_three_above": ["\u0774"],
-             "fathatan": {
-               "normal": ["\u0627\u064B"],
-               "final": "\uFD3C",
-               "isolated": "\uFD3D"
-             },
-             "isolated": "\uFE8D",
-             "final": "\uFE8E"
-           },
-           "beh": {
-             "normal": ["\u0628"],
-             "dotless": ["\u066E"],
-             "three_dots_horizontally_below": ["\u0750"],
-             "dot_below_three_dots_above": ["\u0751"],
-             "three_dots_pointing_upwards_below": ["\u0752"],
-             "three_dots_pointing_upwards_below_two_dots_above": ["\u0753"],
-             "two_dots_below_dot_above": ["\u0754"],
-             "inverted_small_v_below": ["\u0755"],
-             "small_v": ["\u0756"],
-             "small_v_below": ["\u08A0"],
-             "hamza_above": ["\u08A1"],
-             "small_meem_above": ["\u08B6"],
-             "isolated": "\uFE8F",
-             "final": "\uFE90",
-             "initial": "\uFE91",
-             "medial": "\uFE92"
-           },
-           "teh marbuta": {
-             "normal": ["\u0629"],
-             "isolated": "\uFE93",
-             "final": "\uFE94"
-           },
-           "teh": {
-             "normal": ["\u062A"],
-             "ring": ["\u067C"],
-             "three_dots_above_downwards": ["\u067D"],
-             "small_teh_above": ["\u08B8"],
-             "isolated": "\uFE95",
-             "final": "\uFE96",
-             "initial": "\uFE97",
-             "medial": "\uFE98"
-           },
-           "theh": {
-             "normal": ["\u062B"],
-             "isolated": "\uFE99",
-             "final": "\uFE9A",
-             "initial": "\uFE9B",
-             "medial": "\uFE9C"
-           },
-           "jeem": {
-             "normal": ["\u062C"],
-             "two_dots_above": ["\u08A2"],
-             "isolated": "\uFE9D",
-             "final": "\uFE9E",
-             "initial": "\uFE9F",
-             "medial": "\uFEA0"
-           },
-           "hah": {
-             "normal": ["\u062D"],
-             "hamza_above": ["\u0681"],
-             "two_dots_vertical_above": ["\u0682"],
-             "three_dots_above": ["\u0685"],
-             "two_dots_above": ["\u0757"],
-             "three_dots_pointing_upwards_below": ["\u0758"],
-             "small_tah_below": ["\u076E"],
-             "small_tah_two_dots": ["\u076F"],
-             "small_tah_above": ["\u0772"],
-             "indic_four_below": ["\u077C"],
-             "isolated": "\uFEA1",
-             "final": "\uFEA2",
-             "initial": "\uFEA3",
-             "medial": "\uFEA4"
-           },
-           "khah": {
-             "normal": ["\u062E"],
-             "isolated": "\uFEA5",
-             "final": "\uFEA6",
-             "initial": "\uFEA7",
-             "medial": "\uFEA8"
-           },
-           "dal": {
-             "normal": ["\u062F"],
-             "ring": ["\u0689"],
-             "dot_below": ["\u068A"],
-             "dot_below_small_tah": ["\u068B"],
-             "three_dots_above_downwards": ["\u068F"],
-             "four_dots_above": ["\u0690"],
-             "inverted_v": ["\u06EE"],
-             "two_dots_vertically_below_small_tah": ["\u0759"],
-             "inverted_small_v_below": ["\u075A"],
-             "three_dots_below": ["\u08AE"],
-             "isolated": "\uFEA9",
-             "final": "\uFEAA"
-           },
-           "thal": {
-             "normal": ["\u0630"],
-             "isolated": "\uFEAB",
-             "final": "\uFEAC"
-           },
-           "reh": {
-             "normal": ["\u0631"],
-             "small_v": ["\u0692"],
-             "ring": ["\u0693"],
-             "dot_below": ["\u0694"],
-             "small_v_below": ["\u0695"],
-             "dot_below_dot_above": ["\u0696"],
-             "two_dots_above": ["\u0697"],
-             "four_dots_above": ["\u0699"],
-             "inverted_v": ["\u06EF"],
-             "stroke": ["\u075B"],
-             "two_dots_vertically_above": ["\u076B"],
-             "hamza_above": ["\u076C"],
-             "small_tah_two_dots": ["\u0771"],
-             "loop": ["\u08AA"],
-             "small_noon_above": ["\u08B9"],
-             "isolated": "\uFEAD",
-             "final": "\uFEAE"
-           },
-           "zain": {
-             "normal": ["\u0632"],
-             "inverted_v_above": ["\u08B2"],
-             "isolated": "\uFEAF",
-             "final": "\uFEB0"
-           },
-           "seen": {
-             "normal": ["\u0633"],
-             "dot_below_dot_above": ["\u069A"],
-             "three_dots_below": ["\u069B"],
-             "three_dots_below_three_dots_above": ["\u069C"],
-             "four_dots_above": ["\u075C"],
-             "two_dots_vertically_above": ["\u076D"],
-             "small_tah_two_dots": ["\u0770"],
-             "indic_four_above": ["\u077D"],
-             "inverted_v": ["\u077E"],
-             "isolated": "\uFEB1",
-             "final": "\uFEB2",
-             "initial": "\uFEB3",
-             "medial": "\uFEB4"
-           },
-           "sheen": {
-             "normal": ["\u0634"],
-             "dot_below": ["\u06FA"],
-             "isolated": "\uFEB5",
-             "final": "\uFEB6",
-             "initial": "\uFEB7",
-             "medial": "\uFEB8"
-           },
-           "sad": {
-             "normal": ["\u0635"],
-             "two_dots_below": ["\u069D"],
-             "three_dots_above": ["\u069E"],
-             "three_dots_below": ["\u08AF"],
-             "isolated": "\uFEB9",
-             "final": "\uFEBA",
-             "initial": "\uFEBB",
-             "medial": "\uFEBC"
-           },
-           "dad": {
-             "normal": ["\u0636"],
-             "dot_below": ["\u06FB"],
-             "isolated": "\uFEBD",
-             "final": "\uFEBE",
-             "initial": "\uFEBF",
-             "medial": "\uFEC0"
-           },
-           "tah": {
-             "normal": ["\u0637"],
-             "three_dots_above": ["\u069F"],
-             "two_dots_above": ["\u08A3"],
-             "isolated": "\uFEC1",
-             "final": "\uFEC2",
-             "initial": "\uFEC3",
-             "medial": "\uFEC4"
-           },
-           "zah": {
-             "normal": ["\u0638"],
-             "isolated": "\uFEC5",
-             "final": "\uFEC6",
-             "initial": "\uFEC7",
-             "medial": "\uFEC8"
-           },
-           "ain": {
-             "normal": ["\u0639"],
-             "three_dots_above": ["\u06A0"],
-             "two_dots_above": ["\u075D"],
-             "three_dots_pointing_downwards_above": ["\u075E"],
-             "two_dots_vertically_above": ["\u075F"],
-             "three_dots_below": ["\u08B3"],
-             "isolated": "\uFEC9",
-             "final": "\uFECA",
-             "initial": "\uFECB",
-             "medial": "\uFECC"
-           },
-           "ghain": {
-             "normal": ["\u063A"],
-             "dot_below": ["\u06FC"],
-             "isolated": "\uFECD",
-             "final": "\uFECE",
-             "initial": "\uFECF",
-             "medial": "\uFED0"
-           },
-           "feh": {
-             "normal": ["\u0641"],
-             "dotless": ["\u06A1"],
-             "dot_moved_below": ["\u06A2"],
-             "dot_below": ["\u06A3"],
-             "three_dots_below": ["\u06A5"],
-             "two_dots_below": ["\u0760"],
-             "three_dots_pointing_upwards_below": ["\u0761"],
-             "dot_below_three_dots_above": ["\u08A4"],
-             "isolated": "\uFED1",
-             "final": "\uFED2",
-             "initial": "\uFED3",
-             "medial": "\uFED4"
-           },
-           "qaf": {
-             "normal": ["\u0642"],
-             "dotless": ["\u066F"],
-             "dot_above": ["\u06A7"],
-             "three_dots_above": ["\u06A8"],
-             "dot_below": ["\u08A5"],
-             "isolated": "\uFED5",
-             "final": "\uFED6",
-             "initial": "\uFED7",
-             "medial": "\uFED8"
-           },
-           "kaf": {
-             "normal": ["\u0643"],
-             "swash": ["\u06AA"],
-             "ring": ["\u06AB"],
-             "dot_above": ["\u06AC"],
-             "three_dots_below": ["\u06AE"],
-             "two_dots_above": ["\u077F"],
-             "dot_below": ["\u08B4"],
-             "isolated": "\uFED9",
-             "final": "\uFEDA",
-             "initial": "\uFEDB",
-             "medial": "\uFEDC"
-           },
-           "lam": {
-             "normal": ["\u0644"],
-             "small_v": ["\u06B5"],
-             "dot_above": ["\u06B6"],
-             "three_dots_above": ["\u06B7"],
-             "three_dots_below": ["\u06B8"],
-             "bar": ["\u076A"],
-             "double_bar": ["\u08A6"],
-             "isolated": "\uFEDD",
-             "final": "\uFEDE",
-             "initial": "\uFEDF",
-             "medial": "\uFEE0"
-           },
-           "meem": {
-             "normal": ["\u0645"],
-             "dot_above": ["\u0765"],
-             "dot_below": ["\u0766"],
-             "three_dots_above": ["\u08A7"],
-             "isolated": "\uFEE1",
-             "final": "\uFEE2",
-             "initial": "\uFEE3",
-             "medial": "\uFEE4"
-           },
-           "noon": {
-             "normal": ["\u0646"],
-             "dot_below": ["\u06B9"],
-             "ring": ["\u06BC"],
-             "three_dots_above": ["\u06BD"],
-             "two_dots_below": ["\u0767"],
-             "small_tah": ["\u0768"],
-             "small_v": ["\u0769"],
-             "isolated": "\uFEE5",
-             "final": "\uFEE6",
-             "initial": "\uFEE7",
-             "medial": "\uFEE8"
-           },
-           "heh": {
-             "normal": ["\u0647"],
-             "isolated": "\uFEE9",
-             "final": "\uFEEA",
-             "initial": "\uFEEB",
-             "medial": "\uFEEC"
-           },
-           "waw": {
-             "normal": ["\u0648"],
-             "hamza_above": {
-               "normal": ["\u0624", "\u0648\u0654"],
-               "isolated": "\uFE85",
-               "final": "\uFE86"
-             },
-             "high_hamza": ["\u0676", "\u0648\u0674"],
-             "ring": ["\u06C4"],
-             "two_dots_above": ["\u06CA"],
-             "dot_above": ["\u06CF"],
-             "indic_two_above": ["\u0778"],
-             "indic_three_above": ["\u0779"],
-             "dot_within": ["\u08AB"],
-             "isolated": "\uFEED",
-             "final": "\uFEEE"
-           },
-           "alef_maksura": {
-             "normal": ["\u0649"],
-             "hamza_above": ["\u0626", "\u064A\u0654"],
-             "initial": "\uFBE8",
-             "medial": "\uFBE9",
-             "isolated": "\uFEEF",
-             "final": "\uFEF0"
-           },
-           "yeh": {
-             "normal": ["\u064A"],
-             "hamza_above": {
-               "normal": ["\u0626", "\u0649\u0654"],
-               "isolated": "\uFE89",
-               "final": "\uFE8A",
-               "initial": "\uFE8B",
-               "medial": "\uFE8C"
-             },
-             "two_dots_below_hamza_above": ["\u08A8"],
-             "high_hamza": ["\u0678", "\u064A\u0674"],
-             "tail": ["\u06CD"],
-             "small_v": ["\u06CE"],
-             "three_dots_below": ["\u06D1"],
-             "two_dots_below_dot_above": ["\u08A9"],
-             "two_dots_below_small_noon_above": ["\u08BA"],
-             "isolated": "\uFEF1",
-             "final": "\uFEF2",
-             "initial": "\uFEF3",
-             "medial": "\uFEF4"
-           },
-           "tteh": {
-             "normal": ["\u0679"],
-             "isolated": "\uFB66",
-             "final": "\uFB67",
-             "initial": "\uFB68",
-             "medial": "\uFB69"
-           },
-           "tteheh": {
-             "normal": ["\u067A"],
-             "isolated": "\uFB5E",
-             "final": "\uFB5F",
-             "initial": "\uFB60",
-             "medial": "\uFB61"
-           },
-           "beeh": {
-             "normal": ["\u067B"],
-             "isolated": "\uFB52",
-             "final": "\uFB53",
-             "initial": "\uFB54",
-             "medial": "\uFB55"
-           },
-           "peh": {
-             "normal": ["\u067E"],
-             "small_meem_above": ["\u08B7"],
-             "isolated": "\uFB56",
-             "final": "\uFB57",
-             "initial": "\uFB58",
-             "medial": "\uFB59"
-           },
-           "teheh": {
-             "normal": ["\u067F"],
-             "isolated": "\uFB62",
-             "final": "\uFB63",
-             "initial": "\uFB64",
-             "medial": "\uFB65"
-           },
-           "beheh": {
-             "normal": ["\u0680"],
-             "isolated": "\uFB5A",
-             "final": "\uFB5B",
-             "initial": "\uFB5C",
-             "medial": "\uFB5D"
-           },
-           "nyeh": {
-             "normal": ["\u0683"],
-             "isolated": "\uFB76",
-             "final": "\uFB77",
-             "initial": "\uFB78",
-             "medial": "\uFB79"
-           },
-           "dyeh": {
-             "normal": ["\u0684"],
-             "isolated": "\uFB72",
-             "final": "\uFB73",
-             "initial": "\uFB74",
-             "medial": "\uFB75"
-           },
-           "tcheh": {
-             "normal": ["\u0686"],
-             "dot_above": ["\u06BF"],
-             "isolated": "\uFB7A",
-             "final": "\uFB7B",
-             "initial": "\uFB7C",
-             "medial": "\uFB7D"
-           },
-           "tcheheh": {
-             "normal": ["\u0687"],
-             "isolated": "\uFB7E",
-             "final": "\uFB7F",
-             "initial": "\uFB80",
-             "medial": "\uFB81"
-           },
-           "ddal": {
-             "normal": ["\u0688"],
-             "isolated": "\uFB88",
-             "final": "\uFB89"
-           },
-           "dahal": {
-             "normal": ["\u068C"],
-             "isolated": "\uFB84",
-             "final": "\uFB85"
-           },
-           "ddahal": {
-             "normal": ["\u068D"],
-             "isolated": "\uFB82",
-             "final": "\uFB83"
-           },
-           "dul": {
-             "normal": ["\u068F", "\u068E"],
-             "isolated": "\uFB86",
-             "final": "\uFB87"
-           },
-           "rreh": {
-             "normal": ["\u0691"],
-             "isolated": "\uFB8C",
-             "final": "\uFB8D"
-           },
-           "jeh": {
-             "normal": ["\u0698"],
-             "isolated": "\uFB8A",
-             "final": "\uFB8B"
-           },
-           "veh": {
-             "normal": ["\u06A4"],
-             "isolated": "\uFB6A",
-             "final": "\uFB6B",
-             "initial": "\uFB6C",
-             "medial": "\uFB6D"
-           },
-           "peheh": {
-             "normal": ["\u06A6"],
-             "isolated": "\uFB6E",
-             "final": "\uFB6F",
-             "initial": "\uFB70",
-             "medial": "\uFB71"
-           },
-           "keheh": {
-             "normal": ["\u06A9"],
-             "dot_above": ["\u0762"],
-             "three_dots_above": ["\u0763"],
-             "three_dots_pointing_upwards_below": ["\u0764"],
-             "isolated": "\uFB8E",
-             "final": "\uFB8F",
-             "initial": "\uFB90",
-             "medial": "\uFB91"
-           },
-           "ng": {
-             "normal": ["\u06AD"],
-             "isolated": "\uFBD3",
-             "final": "\uFBD4",
-             "initial": "\uFBD5",
-             "medial": "\uFBD6"
-           },
-           "gaf": {
-             "normal": ["\u06AF"],
-             "ring": ["\u06B0"],
-             "two_dots_below": ["\u06B2"],
-             "three_dots_above": ["\u06B4"],
-             "inverted_stroke": ["\u08B0"],
-             "isolated": "\uFB92",
-             "final": "\uFB93",
-             "initial": "\uFB94",
-             "medial": "\uFB95"
-           },
-           "ngoeh": {
-             "normal": ["\u06B1"],
-             "isolated": "\uFB9A",
-             "final": "\uFB9B",
-             "initial": "\uFB9C",
-             "medial": "\uFB9D"
-           },
-           "gueh": {
-             "normal": ["\u06B3"],
-             "isolated": "\uFB96",
-             "final": "\uFB97",
-             "initial": "\uFB98",
-             "medial": "\uFB99"
-           },
-           "noon ghunna": {
-             "normal": ["\u06BA"],
-             "isolated": "\uFB9E",
-             "final": "\uFB9F"
-           },
-           "rnoon": {
-             "normal": ["\u06BB"],
-             "isolated": "\uFBA0",
-             "final": "\uFBA1",
-             "initial": "\uFBA2",
-             "medial": "\uFBA3"
-           },
-           "heh doachashmee": {
-             "normal": ["\u06BE"],
-             "isolated": "\uFBAA",
-             "final": "\uFBAB",
-             "initial": "\uFBAC",
-             "medial": "\uFBAD"
-           },
-           "heh goal": {
-             "normal": ["\u06C1"],
-             "hamza_above": ["\u06C1\u0654", "\u06C2"],
-             "isolated": "\uFBA6",
-             "final": "\uFBA7",
-             "initial": "\uFBA8",
-             "medial": "\uFBA9"
-           },
-           "teh marbuta goal": {
-             "normal": ["\u06C3"]
-           },
-           "kirghiz oe": {
-             "normal": ["\u06C5"],
-             "isolated": "\uFBE0",
-             "final": "\uFBE1"
-           },
-           "oe": {
-             "normal": ["\u06C6"],
-             "isolated": "\uFBD9",
-             "final": "\uFBDA"
-           },
-           "u": {
-             "normal": ["\u06C7"],
-             "hamza_above": {
-               "normal": ["\u0677", "\u06C7\u0674"],
-               "isolated": "\uFBDD"
-             },
-             "isolated": "\uFBD7",
-             "final": "\uFBD8"
-           },
-           "yu": {
-             "normal": ["\u06C8"],
-             "isolated": "\uFBDB",
-             "final": "\uFBDC"
-           },
-           "kirghiz yu": {
-             "normal": ["\u06C9"],
-             "isolated": "\uFBE2",
-             "final": "\uFBE3"
-           },
-           "ve": {
-             "normal": ["\u06CB"],
-             "isolated": "\uFBDE",
-             "final": "\uFBDF"
-           },
-           "farsi yeh": {
-             "normal": ["\u06CC"],
-             "indic_two_above": ["\u0775"],
-             "indic_three_above": ["\u0776"],
-             "indic_four_above": ["\u0777"],
-             "isolated": "\uFBFC",
-             "final": "\uFBFD",
-             "initial": "\uFBFE",
-             "medial": "\uFBFF"
-           },
-           "e": {
-             "normal": ["\u06D0"],
-             "isolated": "\uFBE4",
-             "final": "\uFBE5",
-             "initial": "\uFBE6",
-             "medial": "\uFBE7"
-           },
-           "yeh barree": {
-             "normal": ["\u06D2"],
-             "hamza_above": {
-               "normal": ["\u06D2\u0654", "\u06D3"],
-               "isolated": "\uFBB0",
-               "final": "\uFBB1"
-             },
-             "indic_two_above": ["\u077A"],
-             "indic_three_above": ["\u077B"],
-             "isolated": "\uFBAE",
-             "final": "\uFBAF"
-           },
-           "ae": {
-             "normal": ["\u06D5"],
-             "isolated": "\u06D5",
-             "final": "\uFEEA",
-             "yeh_above": {
-               "normal": ["\u06C0", "\u06D5\u0654"],
-               "isolated": "\uFBA4",
-               "final": "\uFBA5"
-             }
-           },
-           "rohingya yeh": {
-             "normal": ["\u08AC"]
-           },
-           "low alef": {
-             "normal": ["\u08AD"]
-           },
-           "straight waw": {
-             "normal": ["\u08B1"]
-           },
-           "african feh": {
-             "normal": ["\u08BB"]
-           },
-           "african qaf": {
-             "normal": ["\u08BC"]
-           },
-           "african noon": {
-             "normal": ["\u08BD"]
-           }
-         };
-         exports["default"] = arabicReference;
-       });
+       isArabic$1.isMath = isMath;

 
 

-       var unicodeLigatures = createCommonjsModule(function (module, exports) {
+       var GlyphSplitter$1 = {};

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         var ligatureReference = {
-           "\u0626\u0627": {
-             "isolated": "\uFBEA",
-             "final": "\uFBEB"
-           },
-           "\u0626\u06D5": {
-             "isolated": "\uFBEC",
-             "final": "\uFBED"
-           },
-           "\u0626\u0648": {
-             "isolated": "\uFBEE",
-             "final": "\uFBEF"
-           },
-           "\u0626\u06C7": {
-             "isolated": "\uFBF0",
-             "final": "\uFBF1"
-           },
-           "\u0626\u06C6": {
-             "isolated": "\uFBF2",
-             "final": "\uFBF3"
-           },
-           "\u0626\u06C8": {
-             "isolated": "\uFBF4",
-             "final": "\uFBF5"
-           },
-           "\u0626\u06D0": {
-             "isolated": "\uFBF6",
-             "final": "\uFBF7",
-             "initial": "\uFBF8"
-           },
-           "\u0626\u0649": {
-             "uighur_kirghiz": {
-               "isolated": "\uFBF9",
-               "final": "\uFBFA",
-               "initial": "\uFBFB"
-             },
-             "isolated": "\uFC03",
-             "final": "\uFC68"
-           },
-           "\u0626\u062C": {
-             "isolated": "\uFC00",
-             "initial": "\uFC97"
-           },
-           "\u0626\u062D": {
-             "isolated": "\uFC01",
-             "initial": "\uFC98"
-           },
-           "\u0626\u0645": {
-             "isolated": "\uFC02",
-             "final": "\uFC66",
-             "initial": "\uFC9A",
-             "medial": "\uFCDF"
-           },
-           "\u0626\u064A": {
-             "isolated": "\uFC04",
-             "final": "\uFC69"
-           },
-           "\u0628\u062C": {
-             "isolated": "\uFC05",
-             "initial": "\uFC9C"
-           },
-           "\u0628\u062D": {
-             "isolated": "\uFC06",
-             "initial": "\uFC9D"
-           },
-           "\u0628\u062E": {
-             "isolated": "\uFC07",
-             "initial": "\uFC9E"
-           },
-           "\u0628\u0645": {
-             "isolated": "\uFC08",
-             "final": "\uFC6C",
-             "initial": "\uFC9F",
-             "medial": "\uFCE1"
-           },
-           "\u0628\u0649": {
-             "isolated": "\uFC09",
-             "final": "\uFC6E"
-           },
-           "\u0628\u064A": {
-             "isolated": "\uFC0A",
-             "final": "\uFC6F"
-           },
-           "\u062A\u062C": {
-             "isolated": "\uFC0B",
-             "initial": "\uFCA1"
-           },
-           "\u062A\u062D": {
-             "isolated": "\uFC0C",
-             "initial": "\uFCA2"
-           },
-           "\u062A\u062E": {
-             "isolated": "\uFC0D",
-             "initial": "\uFCA3"
-           },
-           "\u062A\u0645": {
-             "isolated": "\uFC0E",
-             "final": "\uFC72",
-             "initial": "\uFCA4",
-             "medial": "\uFCE3"
-           },
-           "\u062A\u0649": {
-             "isolated": "\uFC0F",
-             "final": "\uFC74"
-           },
-           "\u062A\u064A": {
-             "isolated": "\uFC10",
-             "final": "\uFC75"
-           },
-           "\u062B\u062C": {
-             "isolated": "\uFC11"
-           },
-           "\u062B\u0645": {
-             "isolated": "\uFC12",
-             "final": "\uFC78",
-             "initial": "\uFCA6",
-             "medial": "\uFCE5"
-           },
-           "\u062B\u0649": {
-             "isolated": "\uFC13",
-             "final": "\uFC7A"
-           },
-           "\u062B\u0648": {
-             "isolated": "\uFC14"
-           },
-           "\u062C\u062D": {
-             "isolated": "\uFC15",
-             "initial": "\uFCA7"
-           },
-           "\u062C\u0645": {
-             "isolated": "\uFC16",
-             "initial": "\uFCA8"
-           },
-           "\u062D\u062C": {
-             "isolated": "\uFC17",
-             "initial": "\uFCA9"
-           },
-           "\u062D\u0645": {
-             "isolated": "\uFC18",
-             "initial": "\uFCAA"
-           },
-           "\u062E\u062C": {
-             "isolated": "\uFC19",
-             "initial": "\uFCAB"
-           },
-           "\u062E\u062D": {
-             "isolated": "\uFC1A"
-           },
-           "\u062E\u0645": {
-             "isolated": "\uFC1B",
-             "initial": "\uFCAC"
-           },
-           "\u0633\u062C": {
-             "isolated": "\uFC1C",
-             "initial": "\uFCAD",
-             "medial": "\uFD34"
-           },
-           "\u0633\u062D": {
-             "isolated": "\uFC1D",
-             "initial": "\uFCAE",
-             "medial": "\uFD35"
-           },
-           "\u0633\u062E": {
-             "isolated": "\uFC1E",
-             "initial": "\uFCAF",
-             "medial": "\uFD36"
-           },
-           "\u0633\u0645": {
-             "isolated": "\uFC1F",
-             "initial": "\uFCB0",
-             "medial": "\uFCE7"
-           },
-           "\u0635\u062D": {
-             "isolated": "\uFC20",
-             "initial": "\uFCB1"
-           },
-           "\u0635\u0645": {
-             "isolated": "\uFC21",
-             "initial": "\uFCB3"
-           },
-           "\u0636\u062C": {
-             "isolated": "\uFC22",
-             "initial": "\uFCB4"
-           },
-           "\u0636\u062D": {
-             "isolated": "\uFC23",
-             "initial": "\uFCB5"
-           },
-           "\u0636\u062E": {
-             "isolated": "\uFC24",
-             "initial": "\uFCB6"
-           },
-           "\u0636\u0645": {
-             "isolated": "\uFC25",
-             "initial": "\uFCB7"
-           },
-           "\u0637\u062D": {
-             "isolated": "\uFC26",
-             "initial": "\uFCB8"
-           },
-           "\u0637\u0645": {
-             "isolated": "\uFC27",
-             "initial": "\uFD33",
-             "medial": "\uFD3A"
-           },
-           "\u0638\u0645": {
-             "isolated": "\uFC28",
-             "initial": "\uFCB9",
-             "medial": "\uFD3B"
-           },
-           "\u0639\u062C": {
-             "isolated": "\uFC29",
-             "initial": "\uFCBA"
-           },
-           "\u0639\u0645": {
-             "isolated": "\uFC2A",
-             "initial": "\uFCBB"
-           },
-           "\u063A\u062C": {
-             "isolated": "\uFC2B",
-             "initial": "\uFCBC"
-           },
-           "\u063A\u0645": {
-             "isolated": "\uFC2C",
-             "initial": "\uFCBD"
-           },
-           "\u0641\u062C": {
-             "isolated": "\uFC2D",
-             "initial": "\uFCBE"
-           },
-           "\u0641\u062D": {
-             "isolated": "\uFC2E",
-             "initial": "\uFCBF"
-           },
-           "\u0641\u062E": {
-             "isolated": "\uFC2F",
-             "initial": "\uFCC0"
-           },
-           "\u0641\u0645": {
-             "isolated": "\uFC30",
-             "initial": "\uFCC1"
-           },
-           "\u0641\u0649": {
-             "isolated": "\uFC31",
-             "final": "\uFC7C"
-           },
-           "\u0641\u064A": {
-             "isolated": "\uFC32",
-             "final": "\uFC7D"
-           },
-           "\u0642\u062D": {
-             "isolated": "\uFC33",
-             "initial": "\uFCC2"
-           },
-           "\u0642\u0645": {
-             "isolated": "\uFC34",
-             "initial": "\uFCC3"
-           },
-           "\u0642\u0649": {
-             "isolated": "\uFC35",
-             "final": "\uFC7E"
-           },
-           "\u0642\u064A": {
-             "isolated": "\uFC36",
-             "final": "\uFC7F"
-           },
-           "\u0643\u0627": {
-             "isolated": "\uFC37",
-             "final": "\uFC80"
-           },
-           "\u0643\u062C": {
-             "isolated": "\uFC38",
-             "initial": "\uFCC4"
-           },
-           "\u0643\u062D": {
-             "isolated": "\uFC39",
-             "initial": "\uFCC5"
-           },
-           "\u0643\u062E": {
-             "isolated": "\uFC3A",
-             "initial": "\uFCC6"
-           },
-           "\u0643\u0644": {
-             "isolated": "\uFC3B",
-             "final": "\uFC81",
-             "initial": "\uFCC7",
-             "medial": "\uFCEB"
-           },
-           "\u0643\u0645": {
-             "isolated": "\uFC3C",
-             "final": "\uFC82",
-             "initial": "\uFCC8",
-             "medial": "\uFCEC"
-           },
-           "\u0643\u0649": {
-             "isolated": "\uFC3D",
-             "final": "\uFC83"
-           },
-           "\u0643\u064A": {
-             "isolated": "\uFC3E",
-             "final": "\uFC84"
-           },
-           "\u0644\u062C": {
-             "isolated": "\uFC3F",
-             "initial": "\uFCC9"
-           },
-           "\u0644\u062D": {
-             "isolated": "\uFC40",
-             "initial": "\uFCCA"
-           },
-           "\u0644\u062E": {
-             "isolated": "\uFC41",
-             "initial": "\uFCCB"
-           },
-           "\u0644\u0645": {
-             "isolated": "\uFC42",
-             "final": "\uFC85",
-             "initial": "\uFCCC",
-             "medial": "\uFCED"
-           },
-           "\u0644\u0649": {
-             "isolated": "\uFC43",
-             "final": "\uFC86"
-           },
-           "\u0644\u064A": {
-             "isolated": "\uFC44",
-             "final": "\uFC87"
-           },
-           "\u0645\u062C": {
-             "isolated": "\uFC45",
-             "initial": "\uFCCE"
-           },
-           "\u0645\u062D": {
-             "isolated": "\uFC46",
-             "initial": "\uFCCF"
-           },
-           "\u0645\u062E": {
-             "isolated": "\uFC47",
-             "initial": "\uFCD0"
-           },
-           "\u0645\u0645": {
-             "isolated": "\uFC48",
-             "final": "\uFC89",
-             "initial": "\uFCD1"
-           },
-           "\u0645\u0649": {
-             "isolated": "\uFC49"
-           },
-           "\u0645\u064A": {
-             "isolated": "\uFC4A"
-           },
-           "\u0646\u062C": {
-             "isolated": "\uFC4B",
-             "initial": "\uFCD2"
-           },
-           "\u0646\u062D": {
-             "isolated": "\uFC4C",
-             "initial": "\uFCD3"
-           },
-           "\u0646\u062E": {
-             "isolated": "\uFC4D",
-             "initial": "\uFCD4"
-           },
-           "\u0646\u0645": {
-             "isolated": "\uFC4E",
-             "final": "\uFC8C",
-             "initial": "\uFCD5",
-             "medial": "\uFCEE"
-           },
-           "\u0646\u0649": {
-             "isolated": "\uFC4F",
-             "final": "\uFC8E"
-           },
-           "\u0646\u064A": {
-             "isolated": "\uFC50",
-             "final": "\uFC8F"
-           },
-           "\u0647\u062C": {
-             "isolated": "\uFC51",
-             "initial": "\uFCD7"
-           },
-           "\u0647\u0645": {
-             "isolated": "\uFC52",
-             "initial": "\uFCD8"
-           },
-           "\u0647\u0649": {
-             "isolated": "\uFC53"
-           },
-           "\u0647\u064A": {
-             "isolated": "\uFC54"
-           },
-           "\u064A\u062C": {
-             "isolated": "\uFC55",
-             "initial": "\uFCDA"
-           },
-           "\u064A\u062D": {
-             "isolated": "\uFC56",
-             "initial": "\uFCDB"
-           },
-           "\u064A\u062E": {
-             "isolated": "\uFC57",
-             "initial": "\uFCDC"
-           },
-           "\u064A\u0645": {
-             "isolated": "\uFC58",
-             "final": "\uFC93",
-             "initial": "\uFCDD",
-             "medial": "\uFCF0"
-           },
-           "\u064A\u0649": {
-             "isolated": "\uFC59",
-             "final": "\uFC95"
-           },
-           "\u064A\u064A": {
-             "isolated": "\uFC5A",
-             "final": "\uFC96"
-           },
-           "\u0630\u0670": {
-             "isolated": "\uFC5B"
-           },
-           "\u0631\u0670": {
-             "isolated": "\uFC5C"
-           },
-           "\u0649\u0670": {
-             "isolated": "\uFC5D",
-             "final": "\uFC90"
-           },
-           "\u064C\u0651": {
-             "isolated": "\uFC5E"
-           },
-           "\u064D\u0651": {
-             "isolated": "\uFC5F"
-           },
-           "\u064E\u0651": {
-             "isolated": "\uFC60"
-           },
-           "\u064F\u0651": {
-             "isolated": "\uFC61"
-           },
-           "\u0650\u0651": {
-             "isolated": "\uFC62"
-           },
-           "\u0651\u0670": {
-             "isolated": "\uFC63"
-           },
-           "\u0626\u0631": {
-             "final": "\uFC64"
-           },
-           "\u0626\u0632": {
-             "final": "\uFC65"
-           },
-           "\u0626\u0646": {
-             "final": "\uFC67"
-           },
-           "\u0628\u0631": {
-             "final": "\uFC6A"
-           },
-           "\u0628\u0632": {
-             "final": "\uFC6B"
-           },
-           "\u0628\u0646": {
-             "final": "\uFC6D"
-           },
-           "\u062A\u0631": {
-             "final": "\uFC70"
-           },
-           "\u062A\u0632": {
-             "final": "\uFC71"
-           },
-           "\u062A\u0646": {
-             "final": "\uFC73"
-           },
-           "\u062B\u0631": {
-             "final": "\uFC76"
-           },
-           "\u062B\u0632": {
-             "final": "\uFC77"
-           },
-           "\u062B\u0646": {
-             "final": "\uFC79"
-           },
-           "\u062B\u064A": {
-             "final": "\uFC7B"
-           },
-           "\u0645\u0627": {
-             "final": "\uFC88"
-           },
-           "\u0646\u0631": {
-             "final": "\uFC8A"
-           },
-           "\u0646\u0632": {
-             "final": "\uFC8B"
-           },
-           "\u0646\u0646": {
-             "final": "\uFC8D"
-           },
-           "\u064A\u0631": {
-             "final": "\uFC91"
-           },
-           "\u064A\u0632": {
-             "final": "\uFC92"
-           },
-           "\u064A\u0646": {
-             "final": "\uFC94"
-           },
-           "\u0626\u062E": {
-             "initial": "\uFC99"
-           },
-           "\u0626\u0647": {
-             "initial": "\uFC9B",
-             "medial": "\uFCE0"
-           },
-           "\u0628\u0647": {
-             "initial": "\uFCA0",
-             "medial": "\uFCE2"
-           },
-           "\u062A\u0647": {
-             "initial": "\uFCA5",
-             "medial": "\uFCE4"
-           },
-           "\u0635\u062E": {
-             "initial": "\uFCB2"
-           },
-           "\u0644\u0647": {
-             "initial": "\uFCCD"
-           },
-           "\u0646\u0647": {
-             "initial": "\uFCD6",
-             "medial": "\uFCEF"
-           },
-           "\u0647\u0670": {
-             "initial": "\uFCD9"
-           },
-           "\u064A\u0647": {
-             "initial": "\uFCDE",
-             "medial": "\uFCF1"
-           },
-           "\u062B\u0647": {
-             "medial": "\uFCE6"
-           },
-           "\u0633\u0647": {
-             "medial": "\uFCE8",
-             "initial": "\uFD31"
-           },
-           "\u0634\u0645": {
-             "medial": "\uFCE9",
-             "isolated": "\uFD0C",
-             "final": "\uFD28",
-             "initial": "\uFD30"
-           },
-           "\u0634\u0647": {
-             "medial": "\uFCEA",
-             "initial": "\uFD32"
-           },
-           "\u0640\u064E\u0651": {
-             "medial": "\uFCF2"
-           },
-           "\u0640\u064F\u0651": {
-             "medial": "\uFCF3"
-           },
-           "\u0640\u0650\u0651": {
-             "medial": "\uFCF4"
-           },
-           "\u0637\u0649": {
-             "isolated": "\uFCF5",
-             "final": "\uFD11"
-           },
-           "\u0637\u064A": {
-             "isolated": "\uFCF6",
-             "final": "\uFD12"
-           },
-           "\u0639\u0649": {
-             "isolated": "\uFCF7",
-             "final": "\uFD13"
-           },
-           "\u0639\u064A": {
-             "isolated": "\uFCF8",
-             "final": "\uFD14"
-           },
-           "\u063A\u0649": {
-             "isolated": "\uFCF9",
-             "final": "\uFD15"
-           },
-           "\u063A\u064A": {
-             "isolated": "\uFCFA",
-             "final": "\uFD16"
-           },
-           "\u0633\u0649": {
-             "isolated": "\uFCFB"
-           },
-           "\u0633\u064A": {
-             "isolated": "\uFCFC",
-             "final": "\uFD18"
-           },
-           "\u0634\u0649": {
-             "isolated": "\uFCFD",
-             "final": "\uFD19"
-           },
-           "\u0634\u064A": {
-             "isolated": "\uFCFE",
-             "final": "\uFD1A"
-           },
-           "\u062D\u0649": {
-             "isolated": "\uFCFF",
-             "final": "\uFD1B"
-           },
-           "\u062D\u064A": {
-             "isolated": "\uFD00",
-             "final": "\uFD1C"
-           },
-           "\u062C\u0649": {
-             "isolated": "\uFD01",
-             "final": "\uFD1D"
-           },
-           "\u062C\u064A": {
-             "isolated": "\uFD02",
-             "final": "\uFD1E"
-           },
-           "\u062E\u0649": {
-             "isolated": "\uFD03",
-             "final": "\uFD1F"
-           },
-           "\u062E\u064A": {
-             "isolated": "\uFD04",
-             "final": "\uFD20"
-           },
-           "\u0635\u0649": {
-             "isolated": "\uFD05",
-             "final": "\uFD21"
-           },
-           "\u0635\u064A": {
-             "isolated": "\uFD06",
-             "final": "\uFD22"
-           },
-           "\u0636\u0649": {
-             "isolated": "\uFD07",
-             "final": "\uFD23"
-           },
-           "\u0636\u064A": {
-             "isolated": "\uFD08",
-             "final": "\uFD24"
-           },
-           "\u0634\u062C": {
-             "isolated": "\uFD09",
-             "final": "\uFD25",
-             "initial": "\uFD2D",
-             "medial": "\uFD37"
-           },
-           "\u0634\u062D": {
-             "isolated": "\uFD0A",
-             "final": "\uFD26",
-             "initial": "\uFD2E",
-             "medial": "\uFD38"
-           },
-           "\u0634\u062E": {
-             "isolated": "\uFD0B",
-             "final": "\uFD27",
-             "initial": "\uFD2F",
-             "medial": "\uFD39"
-           },
-           "\u0634\u0631": {
-             "isolated": "\uFD0D",
-             "final": "\uFD29"
-           },
-           "\u0633\u0631": {
-             "isolated": "\uFD0E",
-             "final": "\uFD2A"
-           },
-           "\u0635\u0631": {
-             "isolated": "\uFD0F",
-             "final": "\uFD2B"
-           },
-           "\u0636\u0631": {
-             "isolated": "\uFD10",
-             "final": "\uFD2C"
-           },
-           "\u0633\u0639": {
-             "final": "\uFD17"
-           },
-           "\u062A\u062C\u0645": {
-             "initial": "\uFD50"
-           },
-           "\u062A\u062D\u062C": {
-             "final": "\uFD51",
-             "initial": "\uFD52"
-           },
-           "\u062A\u062D\u0645": {
-             "initial": "\uFD53"
-           },
-           "\u062A\u062E\u0645": {
-             "initial": "\uFD54"
-           },
-           "\u062A\u0645\u062C": {
-             "initial": "\uFD55"
-           },
-           "\u062A\u0645\u062D": {
-             "initial": "\uFD56"
-           },
-           "\u062A\u0645\u062E": {
-             "initial": "\uFD57"
-           },
-           "\u062C\u0645\u062D": {
-             "final": "\uFD58",
-             "initial": "\uFD59"
-           },
-           "\u062D\u0645\u064A": {
-             "final": "\uFD5A"
-           },
-           "\u062D\u0645\u0649": {
-             "final": "\uFD5B"
-           },
-           "\u0633\u062D\u062C": {
-             "initial": "\uFD5C"
-           },
-           "\u0633\u062C\u062D": {
-             "initial": "\uFD5D"
-           },
-           "\u0633\u062C\u0649": {
-             "final": "\uFD5E"
-           },
-           "\u0633\u0645\u062D": {
-             "final": "\uFD5F",
-             "initial": "\uFD60"
-           },
-           "\u0633\u0645\u062C": {
-             "initial": "\uFD61"
-           },
-           "\u0633\u0645\u0645": {
-             "final": "\uFD62",
-             "initial": "\uFD63"
-           },
-           "\u0635\u062D\u062D": {
-             "final": "\uFD64",
-             "initial": "\uFD65"
-           },
-           "\u0635\u0645\u0645": {
-             "final": "\uFD66",
-             "initial": "\uFDC5"
-           },
-           "\u0634\u062D\u0645": {
-             "final": "\uFD67",
-             "initial": "\uFD68"
-           },
-           "\u0634\u062C\u064A": {
-             "final": "\uFD69"
-           },
-           "\u0634\u0645\u062E": {
-             "final": "\uFD6A",
-             "initial": "\uFD6B"
-           },
-           "\u0634\u0645\u0645": {
-             "final": "\uFD6C",
-             "initial": "\uFD6D"
-           },
-           "\u0636\u062D\u0649": {
-             "final": "\uFD6E"
-           },
-           "\u0636\u062E\u0645": {
-             "final": "\uFD6F",
-             "initial": "\uFD70"
-           },
-           "\u0636\u0645\u062D": {
-             "final": "\uFD71"
-           },
-           "\u0637\u0645\u062D": {
-             "initial": "\uFD72"
-           },
-           "\u0637\u0645\u0645": {
-             "initial": "\uFD73"
-           },
-           "\u0637\u0645\u064A": {
-             "final": "\uFD74"
-           },
-           "\u0639\u062C\u0645": {
-             "final": "\uFD75",
-             "initial": "\uFDC4"
-           },
-           "\u0639\u0645\u0645": {
-             "final": "\uFD76",
-             "initial": "\uFD77"
-           },
-           "\u0639\u0645\u0649": {
-             "final": "\uFD78"
-           },
-           "\u063A\u0645\u0645": {
-             "final": "\uFD79"
-           },
-           "\u063A\u0645\u064A": {
-             "final": "\uFD7A"
-           },
-           "\u063A\u0645\u0649": {
-             "final": "\uFD7B"
-           },
-           "\u0641\u062E\u0645": {
-             "final": "\uFD7C",
-             "initial": "\uFD7D"
-           },
-           "\u0642\u0645\u062D": {
-             "final": "\uFD7E",
-             "initial": "\uFDB4"
-           },
-           "\u0642\u0645\u0645": {
-             "final": "\uFD7F"
-           },
-           "\u0644\u062D\u0645": {
-             "final": "\uFD80",
-             "initial": "\uFDB5"
-           },
-           "\u0644\u062D\u064A": {
-             "final": "\uFD81"
-           },
-           "\u0644\u062D\u0649": {
-             "final": "\uFD82"
-           },
-           "\u0644\u062C\u062C": {
-             "initial": "\uFD83",
-             "final": "\uFD84"
-           },
-           "\u0644\u062E\u0645": {
-             "final": "\uFD85",
-             "initial": "\uFD86"
-           },
-           "\u0644\u0645\u062D": {
-             "final": "\uFD87",
-             "initial": "\uFD88"
-           },
-           "\u0645\u062D\u062C": {
-             "initial": "\uFD89"
-           },
-           "\u0645\u062D\u0645": {
-             "initial": "\uFD8A"
-           },
-           "\u0645\u062D\u064A": {
-             "final": "\uFD8B"
-           },
-           "\u0645\u062C\u062D": {
-             "initial": "\uFD8C"
-           },
-           "\u0645\u062C\u0645": {
-             "initial": "\uFD8D"
-           },
-           "\u0645\u062E\u062C": {
-             "initial": "\uFD8E"
-           },
-           "\u0645\u062E\u0645": {
-             "initial": "\uFD8F"
-           },
-           "\u0645\u062C\u062E": {
-             "initial": "\uFD92"
-           },
-           "\u0647\u0645\u062C": {
-             "initial": "\uFD93"
-           },
-           "\u0647\u0645\u0645": {
-             "initial": "\uFD94"
-           },
-           "\u0646\u062D\u0645": {
-             "initial": "\uFD95"
-           },
-           "\u0646\u062D\u0649": {
-             "final": "\uFD96"
-           },
-           "\u0646\u062C\u0645": {
-             "final": "\uFD97",
-             "initial": "\uFD98"
-           },
-           "\u0646\u062C\u0649": {
-             "final": "\uFD99"
-           },
-           "\u0646\u0645\u064A": {
-             "final": "\uFD9A"
-           },
-           "\u0646\u0645\u0649": {
-             "final": "\uFD9B"
-           },
-           "\u064A\u0645\u0645": {
-             "final": "\uFD9C",
-             "initial": "\uFD9D"
-           },
-           "\u0628\u062E\u064A": {
-             "final": "\uFD9E"
-           },
-           "\u062A\u062C\u064A": {
-             "final": "\uFD9F"
-           },
-           "\u062A\u062C\u0649": {
-             "final": "\uFDA0"
-           },
-           "\u062A\u062E\u064A": {
-             "final": "\uFDA1"
-           },
-           "\u062A\u062E\u0649": {
-             "final": "\uFDA2"
-           },
-           "\u062A\u0645\u064A": {
-             "final": "\uFDA3"
-           },
-           "\u062A\u0645\u0649": {
-             "final": "\uFDA4"
-           },
-           "\u062C\u0645\u064A": {
-             "final": "\uFDA5"
-           },
-           "\u062C\u062D\u0649": {
-             "final": "\uFDA6"
-           },
-           "\u062C\u0645\u0649": {
-             "final": "\uFDA7"
-           },
-           "\u0633\u062E\u0649": {
-             "final": "\uFDA8"
-           },
-           "\u0635\u062D\u064A": {
-             "final": "\uFDA9"
-           },
-           "\u0634\u062D\u064A": {
-             "final": "\uFDAA"
-           },
-           "\u0636\u062D\u064A": {
-             "final": "\uFDAB"
-           },
-           "\u0644\u062C\u064A": {
-             "final": "\uFDAC"
-           },
-           "\u0644\u0645\u064A": {
-             "final": "\uFDAD"
-           },
-           "\u064A\u062D\u064A": {
-             "final": "\uFDAE"
-           },
-           "\u064A\u062C\u064A": {
-             "final": "\uFDAF"
-           },
-           "\u064A\u0645\u064A": {
-             "final": "\uFDB0"
-           },
-           "\u0645\u0645\u064A": {
-             "final": "\uFDB1"
-           },
-           "\u0642\u0645\u064A": {
-             "final": "\uFDB2"
-           },
-           "\u0646\u062D\u064A": {
-             "final": "\uFDB3"
-           },
-           "\u0639\u0645\u064A": {
-             "final": "\uFDB6"
-           },
-           "\u0643\u0645\u064A": {
-             "final": "\uFDB7"
-           },
-           "\u0646\u062C\u062D": {
-             "initial": "\uFDB8",
-             "final": "\uFDBD"
-           },
-           "\u0645\u062E\u064A": {
-             "final": "\uFDB9"
-           },
-           "\u0644\u062C\u0645": {
-             "initial": "\uFDBA",
-             "final": "\uFDBC"
-           },
-           "\u0643\u0645\u0645": {
-             "final": "\uFDBB",
-             "initial": "\uFDC3"
-           },
-           "\u062C\u062D\u064A": {
-             "final": "\uFDBE"
-           },
-           "\u062D\u062C\u064A": {
-             "final": "\uFDBF"
-           },
-           "\u0645\u062C\u064A": {
-             "final": "\uFDC0"
+       var reference = {};
+
+       var unicodeArabic = {};
+
+       Object.defineProperty(unicodeArabic, "__esModule", {
+         value: true
+       });
+       var arabicReference = {
+         "alef": {
+           "normal": ["\u0627"],
+           "madda_above": {
+             "normal": ["\u0627\u0653", "\u0622"],
+             "isolated": "\uFE81",
+             "final": "\uFE82"

            },
            },

-           "\u0641\u0645\u064A": {
-             "final": "\uFDC1"
+           "hamza_above": {
+             "normal": ["\u0627\u0654", "\u0623"],
+             "isolated": "\uFE83",
+             "final": "\uFE84"

            },
            },

-           "\u0628\u062D\u064A": {
-             "final": "\uFDC2"
+           "hamza_below": {
+             "normal": ["\u0627\u0655", "\u0625"],
+             "isolated": "\uFE87",
+             "final": "\uFE88"

            },
            },

-           "\u0633\u062E\u064A": {
-             "final": "\uFDC6"
+           "wasla": {
+             "normal": "\u0671",
+             "isolated": "\uFB50",
+             "final": "\uFB51"

            },
            },

-           "\u0646\u062C\u064A": {
-             "final": "\uFDC7"
+           "wavy_hamza_above": ["\u0672"],
+           "wavy_hamza_below": ["\u0627\u065F", "\u0673"],
+           "high_hamza": ["\u0675", "\u0627\u0674"],
+           "indic_two_above": ["\u0773"],
+           "indic_three_above": ["\u0774"],
+           "fathatan": {
+             "normal": ["\u0627\u064B"],
+             "final": "\uFD3C",
+             "isolated": "\uFD3D"

            },
            },

-           "\u0644\u0622": {
-             "isolated": "\uFEF5",
-             "final": "\uFEF6"
+           "isolated": "\uFE8D",
+           "final": "\uFE8E"
+         },
+         "beh": {
+           "normal": ["\u0628"],
+           "dotless": ["\u066E"],
+           "three_dots_horizontally_below": ["\u0750"],
+           "dot_below_three_dots_above": ["\u0751"],
+           "three_dots_pointing_upwards_below": ["\u0752"],
+           "three_dots_pointing_upwards_below_two_dots_above": ["\u0753"],
+           "two_dots_below_dot_above": ["\u0754"],
+           "inverted_small_v_below": ["\u0755"],
+           "small_v": ["\u0756"],
+           "small_v_below": ["\u08A0"],
+           "hamza_above": ["\u08A1"],
+           "small_meem_above": ["\u08B6"],
+           "isolated": "\uFE8F",
+           "final": "\uFE90",
+           "initial": "\uFE91",
+           "medial": "\uFE92"
+         },
+         "teh marbuta": {
+           "normal": ["\u0629"],
+           "isolated": "\uFE93",
+           "final": "\uFE94"
+         },
+         "teh": {
+           "normal": ["\u062A"],
+           "ring": ["\u067C"],
+           "three_dots_above_downwards": ["\u067D"],
+           "small_teh_above": ["\u08B8"],
+           "isolated": "\uFE95",
+           "final": "\uFE96",
+           "initial": "\uFE97",
+           "medial": "\uFE98"
+         },
+         "theh": {
+           "normal": ["\u062B"],
+           "isolated": "\uFE99",
+           "final": "\uFE9A",
+           "initial": "\uFE9B",
+           "medial": "\uFE9C"
+         },
+         "jeem": {
+           "normal": ["\u062C"],
+           "two_dots_above": ["\u08A2"],
+           "isolated": "\uFE9D",
+           "final": "\uFE9E",
+           "initial": "\uFE9F",
+           "medial": "\uFEA0"
+         },
+         "hah": {
+           "normal": ["\u062D"],
+           "hamza_above": ["\u0681"],
+           "two_dots_vertical_above": ["\u0682"],
+           "three_dots_above": ["\u0685"],
+           "two_dots_above": ["\u0757"],
+           "three_dots_pointing_upwards_below": ["\u0758"],
+           "small_tah_below": ["\u076E"],
+           "small_tah_two_dots": ["\u076F"],
+           "small_tah_above": ["\u0772"],
+           "indic_four_below": ["\u077C"],
+           "isolated": "\uFEA1",
+           "final": "\uFEA2",
+           "initial": "\uFEA3",
+           "medial": "\uFEA4"
+         },
+         "khah": {
+           "normal": ["\u062E"],
+           "isolated": "\uFEA5",
+           "final": "\uFEA6",
+           "initial": "\uFEA7",
+           "medial": "\uFEA8"
+         },
+         "dal": {
+           "normal": ["\u062F"],
+           "ring": ["\u0689"],
+           "dot_below": ["\u068A"],
+           "dot_below_small_tah": ["\u068B"],
+           "three_dots_above_downwards": ["\u068F"],
+           "four_dots_above": ["\u0690"],
+           "inverted_v": ["\u06EE"],
+           "two_dots_vertically_below_small_tah": ["\u0759"],
+           "inverted_small_v_below": ["\u075A"],
+           "three_dots_below": ["\u08AE"],
+           "isolated": "\uFEA9",
+           "final": "\uFEAA"
+         },
+         "thal": {
+           "normal": ["\u0630"],
+           "isolated": "\uFEAB",
+           "final": "\uFEAC"
+         },
+         "reh": {
+           "normal": ["\u0631"],
+           "small_v": ["\u0692"],
+           "ring": ["\u0693"],
+           "dot_below": ["\u0694"],
+           "small_v_below": ["\u0695"],
+           "dot_below_dot_above": ["\u0696"],
+           "two_dots_above": ["\u0697"],
+           "four_dots_above": ["\u0699"],
+           "inverted_v": ["\u06EF"],
+           "stroke": ["\u075B"],
+           "two_dots_vertically_above": ["\u076B"],
+           "hamza_above": ["\u076C"],
+           "small_tah_two_dots": ["\u0771"],
+           "loop": ["\u08AA"],
+           "small_noon_above": ["\u08B9"],
+           "isolated": "\uFEAD",
+           "final": "\uFEAE"
+         },
+         "zain": {
+           "normal": ["\u0632"],
+           "inverted_v_above": ["\u08B2"],
+           "isolated": "\uFEAF",
+           "final": "\uFEB0"
+         },
+         "seen": {
+           "normal": ["\u0633"],
+           "dot_below_dot_above": ["\u069A"],
+           "three_dots_below": ["\u069B"],
+           "three_dots_below_three_dots_above": ["\u069C"],
+           "four_dots_above": ["\u075C"],
+           "two_dots_vertically_above": ["\u076D"],
+           "small_tah_two_dots": ["\u0770"],
+           "indic_four_above": ["\u077D"],
+           "inverted_v": ["\u077E"],
+           "isolated": "\uFEB1",
+           "final": "\uFEB2",
+           "initial": "\uFEB3",
+           "medial": "\uFEB4"
+         },
+         "sheen": {
+           "normal": ["\u0634"],
+           "dot_below": ["\u06FA"],
+           "isolated": "\uFEB5",
+           "final": "\uFEB6",
+           "initial": "\uFEB7",
+           "medial": "\uFEB8"
+         },
+         "sad": {
+           "normal": ["\u0635"],
+           "two_dots_below": ["\u069D"],
+           "three_dots_above": ["\u069E"],
+           "three_dots_below": ["\u08AF"],
+           "isolated": "\uFEB9",
+           "final": "\uFEBA",
+           "initial": "\uFEBB",
+           "medial": "\uFEBC"
+         },
+         "dad": {
+           "normal": ["\u0636"],
+           "dot_below": ["\u06FB"],
+           "isolated": "\uFEBD",
+           "final": "\uFEBE",
+           "initial": "\uFEBF",
+           "medial": "\uFEC0"
+         },
+         "tah": {
+           "normal": ["\u0637"],
+           "three_dots_above": ["\u069F"],
+           "two_dots_above": ["\u08A3"],
+           "isolated": "\uFEC1",
+           "final": "\uFEC2",
+           "initial": "\uFEC3",
+           "medial": "\uFEC4"
+         },
+         "zah": {
+           "normal": ["\u0638"],
+           "isolated": "\uFEC5",
+           "final": "\uFEC6",
+           "initial": "\uFEC7",
+           "medial": "\uFEC8"
+         },
+         "ain": {
+           "normal": ["\u0639"],
+           "three_dots_above": ["\u06A0"],
+           "two_dots_above": ["\u075D"],
+           "three_dots_pointing_downwards_above": ["\u075E"],
+           "two_dots_vertically_above": ["\u075F"],
+           "three_dots_below": ["\u08B3"],
+           "isolated": "\uFEC9",
+           "final": "\uFECA",
+           "initial": "\uFECB",
+           "medial": "\uFECC"
+         },
+         "ghain": {
+           "normal": ["\u063A"],
+           "dot_below": ["\u06FC"],
+           "isolated": "\uFECD",
+           "final": "\uFECE",
+           "initial": "\uFECF",
+           "medial": "\uFED0"
+         },
+         "feh": {
+           "normal": ["\u0641"],
+           "dotless": ["\u06A1"],
+           "dot_moved_below": ["\u06A2"],
+           "dot_below": ["\u06A3"],
+           "three_dots_below": ["\u06A5"],
+           "two_dots_below": ["\u0760"],
+           "three_dots_pointing_upwards_below": ["\u0761"],
+           "dot_below_three_dots_above": ["\u08A4"],
+           "isolated": "\uFED1",
+           "final": "\uFED2",
+           "initial": "\uFED3",
+           "medial": "\uFED4"
+         },
+         "qaf": {
+           "normal": ["\u0642"],
+           "dotless": ["\u066F"],
+           "dot_above": ["\u06A7"],
+           "three_dots_above": ["\u06A8"],
+           "dot_below": ["\u08A5"],
+           "isolated": "\uFED5",
+           "final": "\uFED6",
+           "initial": "\uFED7",
+           "medial": "\uFED8"
+         },
+         "kaf": {
+           "normal": ["\u0643"],
+           "swash": ["\u06AA"],
+           "ring": ["\u06AB"],
+           "dot_above": ["\u06AC"],
+           "three_dots_below": ["\u06AE"],
+           "two_dots_above": ["\u077F"],
+           "dot_below": ["\u08B4"],
+           "isolated": "\uFED9",
+           "final": "\uFEDA",
+           "initial": "\uFEDB",
+           "medial": "\uFEDC"
+         },
+         "lam": {
+           "normal": ["\u0644"],
+           "small_v": ["\u06B5"],
+           "dot_above": ["\u06B6"],
+           "three_dots_above": ["\u06B7"],
+           "three_dots_below": ["\u06B8"],
+           "bar": ["\u076A"],
+           "double_bar": ["\u08A6"],
+           "isolated": "\uFEDD",
+           "final": "\uFEDE",
+           "initial": "\uFEDF",
+           "medial": "\uFEE0"
+         },
+         "meem": {
+           "normal": ["\u0645"],
+           "dot_above": ["\u0765"],
+           "dot_below": ["\u0766"],
+           "three_dots_above": ["\u08A7"],
+           "isolated": "\uFEE1",
+           "final": "\uFEE2",
+           "initial": "\uFEE3",
+           "medial": "\uFEE4"
+         },
+         "noon": {
+           "normal": ["\u0646"],
+           "dot_below": ["\u06B9"],
+           "ring": ["\u06BC"],
+           "three_dots_above": ["\u06BD"],
+           "two_dots_below": ["\u0767"],
+           "small_tah": ["\u0768"],
+           "small_v": ["\u0769"],
+           "isolated": "\uFEE5",
+           "final": "\uFEE6",
+           "initial": "\uFEE7",
+           "medial": "\uFEE8"
+         },
+         "heh": {
+           "normal": ["\u0647"],
+           "isolated": "\uFEE9",
+           "final": "\uFEEA",
+           "initial": "\uFEEB",
+           "medial": "\uFEEC"
+         },
+         "waw": {
+           "normal": ["\u0648"],
+           "hamza_above": {
+             "normal": ["\u0624", "\u0648\u0654"],
+             "isolated": "\uFE85",
+             "final": "\uFE86"

            },
            },

-           "\u0644\u0623": {
-             "isolated": "\uFEF7",
-             "final": "\uFEF8"
+           "high_hamza": ["\u0676", "\u0648\u0674"],
+           "ring": ["\u06C4"],
+           "two_dots_above": ["\u06CA"],
+           "dot_above": ["\u06CF"],
+           "indic_two_above": ["\u0778"],
+           "indic_three_above": ["\u0779"],
+           "dot_within": ["\u08AB"],
+           "isolated": "\uFEED",
+           "final": "\uFEEE"
+         },
+         "alef_maksura": {
+           "normal": ["\u0649"],
+           "hamza_above": ["\u0626", "\u064A\u0654"],
+           "initial": "\uFBE8",
+           "medial": "\uFBE9",
+           "isolated": "\uFEEF",
+           "final": "\uFEF0"
+         },
+         "yeh": {
+           "normal": ["\u064A"],
+           "hamza_above": {
+             "normal": ["\u0626", "\u0649\u0654"],
+             "isolated": "\uFE89",
+             "final": "\uFE8A",
+             "initial": "\uFE8B",
+             "medial": "\uFE8C"

            },
            },

-           "\u0644\u0625": {
-             "isolated": "\uFEF9",
-             "final": "\uFEFA"
+           "two_dots_below_hamza_above": ["\u08A8"],
+           "high_hamza": ["\u0678", "\u064A\u0674"],
+           "tail": ["\u06CD"],
+           "small_v": ["\u06CE"],
+           "three_dots_below": ["\u06D1"],
+           "two_dots_below_dot_above": ["\u08A9"],
+           "two_dots_below_small_noon_above": ["\u08BA"],
+           "isolated": "\uFEF1",
+           "final": "\uFEF2",
+           "initial": "\uFEF3",
+           "medial": "\uFEF4"
+         },
+         "tteh": {
+           "normal": ["\u0679"],
+           "isolated": "\uFB66",
+           "final": "\uFB67",
+           "initial": "\uFB68",
+           "medial": "\uFB69"
+         },
+         "tteheh": {
+           "normal": ["\u067A"],
+           "isolated": "\uFB5E",
+           "final": "\uFB5F",
+           "initial": "\uFB60",
+           "medial": "\uFB61"
+         },
+         "beeh": {
+           "normal": ["\u067B"],
+           "isolated": "\uFB52",
+           "final": "\uFB53",
+           "initial": "\uFB54",
+           "medial": "\uFB55"
+         },
+         "peh": {
+           "normal": ["\u067E"],
+           "small_meem_above": ["\u08B7"],
+           "isolated": "\uFB56",
+           "final": "\uFB57",
+           "initial": "\uFB58",
+           "medial": "\uFB59"
+         },
+         "teheh": {
+           "normal": ["\u067F"],
+           "isolated": "\uFB62",
+           "final": "\uFB63",
+           "initial": "\uFB64",
+           "medial": "\uFB65"
+         },
+         "beheh": {
+           "normal": ["\u0680"],
+           "isolated": "\uFB5A",
+           "final": "\uFB5B",
+           "initial": "\uFB5C",
+           "medial": "\uFB5D"
+         },
+         "nyeh": {
+           "normal": ["\u0683"],
+           "isolated": "\uFB76",
+           "final": "\uFB77",
+           "initial": "\uFB78",
+           "medial": "\uFB79"
+         },
+         "dyeh": {
+           "normal": ["\u0684"],
+           "isolated": "\uFB72",
+           "final": "\uFB73",
+           "initial": "\uFB74",
+           "medial": "\uFB75"
+         },
+         "tcheh": {
+           "normal": ["\u0686"],
+           "dot_above": ["\u06BF"],
+           "isolated": "\uFB7A",
+           "final": "\uFB7B",
+           "initial": "\uFB7C",
+           "medial": "\uFB7D"
+         },
+         "tcheheh": {
+           "normal": ["\u0687"],
+           "isolated": "\uFB7E",
+           "final": "\uFB7F",
+           "initial": "\uFB80",
+           "medial": "\uFB81"
+         },
+         "ddal": {
+           "normal": ["\u0688"],
+           "isolated": "\uFB88",
+           "final": "\uFB89"
+         },
+         "dahal": {
+           "normal": ["\u068C"],
+           "isolated": "\uFB84",
+           "final": "\uFB85"
+         },
+         "ddahal": {
+           "normal": ["\u068D"],
+           "isolated": "\uFB82",
+           "final": "\uFB83"
+         },
+         "dul": {
+           "normal": ["\u068F", "\u068E"],
+           "isolated": "\uFB86",
+           "final": "\uFB87"
+         },
+         "rreh": {
+           "normal": ["\u0691"],
+           "isolated": "\uFB8C",
+           "final": "\uFB8D"
+         },
+         "jeh": {
+           "normal": ["\u0698"],
+           "isolated": "\uFB8A",
+           "final": "\uFB8B"
+         },
+         "veh": {
+           "normal": ["\u06A4"],
+           "isolated": "\uFB6A",
+           "final": "\uFB6B",
+           "initial": "\uFB6C",
+           "medial": "\uFB6D"
+         },
+         "peheh": {
+           "normal": ["\u06A6"],
+           "isolated": "\uFB6E",
+           "final": "\uFB6F",
+           "initial": "\uFB70",
+           "medial": "\uFB71"
+         },
+         "keheh": {
+           "normal": ["\u06A9"],
+           "dot_above": ["\u0762"],
+           "three_dots_above": ["\u0763"],
+           "three_dots_pointing_upwards_below": ["\u0764"],
+           "isolated": "\uFB8E",
+           "final": "\uFB8F",
+           "initial": "\uFB90",
+           "medial": "\uFB91"
+         },
+         "ng": {
+           "normal": ["\u06AD"],
+           "isolated": "\uFBD3",
+           "final": "\uFBD4",
+           "initial": "\uFBD5",
+           "medial": "\uFBD6"
+         },
+         "gaf": {
+           "normal": ["\u06AF"],
+           "ring": ["\u06B0"],
+           "two_dots_below": ["\u06B2"],
+           "three_dots_above": ["\u06B4"],
+           "inverted_stroke": ["\u08B0"],
+           "isolated": "\uFB92",
+           "final": "\uFB93",
+           "initial": "\uFB94",
+           "medial": "\uFB95"
+         },
+         "ngoeh": {
+           "normal": ["\u06B1"],
+           "isolated": "\uFB9A",
+           "final": "\uFB9B",
+           "initial": "\uFB9C",
+           "medial": "\uFB9D"
+         },
+         "gueh": {
+           "normal": ["\u06B3"],
+           "isolated": "\uFB96",
+           "final": "\uFB97",
+           "initial": "\uFB98",
+           "medial": "\uFB99"
+         },
+         "noon ghunna": {
+           "normal": ["\u06BA"],
+           "isolated": "\uFB9E",
+           "final": "\uFB9F"
+         },
+         "rnoon": {
+           "normal": ["\u06BB"],
+           "isolated": "\uFBA0",
+           "final": "\uFBA1",
+           "initial": "\uFBA2",
+           "medial": "\uFBA3"
+         },
+         "heh doachashmee": {
+           "normal": ["\u06BE"],
+           "isolated": "\uFBAA",
+           "final": "\uFBAB",
+           "initial": "\uFBAC",
+           "medial": "\uFBAD"
+         },
+         "heh goal": {
+           "normal": ["\u06C1"],
+           "hamza_above": ["\u06C1\u0654", "\u06C2"],
+           "isolated": "\uFBA6",
+           "final": "\uFBA7",
+           "initial": "\uFBA8",
+           "medial": "\uFBA9"
+         },
+         "teh marbuta goal": {
+           "normal": ["\u06C3"]
+         },
+         "kirghiz oe": {
+           "normal": ["\u06C5"],
+           "isolated": "\uFBE0",
+           "final": "\uFBE1"
+         },
+         "oe": {
+           "normal": ["\u06C6"],
+           "isolated": "\uFBD9",
+           "final": "\uFBDA"
+         },
+         "u": {
+           "normal": ["\u06C7"],
+           "hamza_above": {
+             "normal": ["\u0677", "\u06C7\u0674"],
+             "isolated": "\uFBDD"

            },
            },

-           "\u0644\u0627": {
-             "isolated": "\uFEFB",
-             "final": "\uFEFC"
+           "isolated": "\uFBD7",
+           "final": "\uFBD8"
+         },
+         "yu": {
+           "normal": ["\u06C8"],
+           "isolated": "\uFBDB",
+           "final": "\uFBDC"
+         },
+         "kirghiz yu": {
+           "normal": ["\u06C9"],
+           "isolated": "\uFBE2",
+           "final": "\uFBE3"
+         },
+         "ve": {
+           "normal": ["\u06CB"],
+           "isolated": "\uFBDE",
+           "final": "\uFBDF"
+         },
+         "farsi yeh": {
+           "normal": ["\u06CC"],
+           "indic_two_above": ["\u0775"],
+           "indic_three_above": ["\u0776"],
+           "indic_four_above": ["\u0777"],
+           "isolated": "\uFBFC",
+           "final": "\uFBFD",
+           "initial": "\uFBFE",
+           "medial": "\uFBFF"
+         },
+         "e": {
+           "normal": ["\u06D0"],
+           "isolated": "\uFBE4",
+           "final": "\uFBE5",
+           "initial": "\uFBE6",
+           "medial": "\uFBE7"
+         },
+         "yeh barree": {
+           "normal": ["\u06D2"],
+           "hamza_above": {
+             "normal": ["\u06D2\u0654", "\u06D3"],
+             "isolated": "\uFBB0",
+             "final": "\uFBB1"

            },
            },

-           "words": {
-             "\u0635\u0644\u06D2": "\uFDF0",
-             "\u0642\u0644\u06D2": "\uFDF1",
-             "\u0627\u0644\u0644\u0647": "\uFDF2",
-             "\u0627\u0643\u0628\u0631": "\uFDF3",
-             "\u0645\u062D\u0645\u062F": "\uFDF4",
-             "\u0635\u0644\u0639\u0645": "\uFDF5",
-             "\u0631\u0633\u0648\u0644": "\uFDF6",
-             "\u0639\u0644\u064A\u0647": "\uFDF7",
-             "\u0648\u0633\u0644\u0645": "\uFDF8",
-             "\u0635\u0644\u0649": "\uFDF9",
-             "\u0635\u0644\u0649\u0627\u0644\u0644\u0647\u0639\u0644\u064A\u0647\u0648\u0633\u0644\u0645": "\uFDFA",
-             "\u062C\u0644\u062C\u0644\u0627\u0644\u0647": "\uFDFB",
-             "\u0631\u06CC\u0627\u0644": "\uFDFC"
-           }
-         };
-         exports["default"] = ligatureReference;
-       });
-
-       var reference = createCommonjsModule(function (module, exports) {
-
-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         var letterList = Object.keys(unicodeArabic["default"]);
-         exports.letterList = letterList;
-         var ligatureList = Object.keys(unicodeLigatures["default"]);
-         exports.ligatureList = ligatureList;
-         var ligatureWordList = Object.keys(unicodeLigatures["default"].words);
-         exports.ligatureWordList = ligatureWordList;
-         var lams = "\u0644\u06B5\u06B6\u06B7\u06B8";
-         exports.lams = lams;
-         var alefs = "\u0627\u0622\u0623\u0625\u0671\u0672\u0673\u0675\u0773\u0774";
-         exports.alefs = alefs; // for (var l = 1; l < lams.length; l++) {
-         //   console.log('-');
-         //   for (var a = 0; a < alefs.length; a++) {
-         //     console.log(a + ': ' + lams[l] + alefs[a]);
-         //   }
-         // }
-
-         var tashkeel = "\u0605\u0640\u0670\u0674\u06DF\u06E7\u06E8";
-         exports.tashkeel = tashkeel;
-
-         function addToTashkeel(start, finish) {
-           for (var i = start; i <= finish; i++) {
-             exports.tashkeel = tashkeel += String.fromCharCode(i);
-           }
-         }
-
-         addToTashkeel(0x0610, 0x061A);
-         addToTashkeel(0x064B, 0x065F);
-         addToTashkeel(0x06D6, 0x06DC);
-         addToTashkeel(0x06E0, 0x06E4);
-         addToTashkeel(0x06EA, 0x06ED);
-         addToTashkeel(0x08D3, 0x08E1);
-         addToTashkeel(0x08E3, 0x08FF);
-         addToTashkeel(0xFE70, 0xFE7F);
-         var lineBreakers = "\u0627\u0629\u0648\u06C0\u06CF\u06FD\u06FE\u076B\u076C\u0771\u0773\u0774\u0778\u0779\u08E2\u08B1\u08B2\u08B9";
-         exports.lineBreakers = lineBreakers;
-
-         function addToLineBreakers(start, finish) {
-           for (var i = start; i <= finish; i++) {
-             exports.lineBreakers = lineBreakers += String.fromCharCode(i);
+           "indic_two_above": ["\u077A"],
+           "indic_three_above": ["\u077B"],
+           "isolated": "\uFBAE",
+           "final": "\uFBAF"
+         },
+         "ae": {
+           "normal": ["\u06D5"],
+           "isolated": "\u06D5",
+           "final": "\uFEEA",
+           "yeh_above": {
+             "normal": ["\u06C0", "\u06D5\u0654"],
+             "isolated": "\uFBA4",
+             "final": "\uFBA5"

            }
            }

+         },
+         "rohingya yeh": {
+           "normal": ["\u08AC"]
+         },
+         "low alef": {
+           "normal": ["\u08AD"]
+         },
+         "straight waw": {
+           "normal": ["\u08B1"]
+         },
+         "african feh": {
+           "normal": ["\u08BB"]
+         },
+         "african qaf": {
+           "normal": ["\u08BC"]
+         },
+         "african noon": {
+           "normal": ["\u08BD"]

          }
          }

+       };

 
 

-         addToLineBreakers(0x0600, 0x061F); // it's OK to include tashkeel in this range as it is ignored
-
-         addToLineBreakers(0x0621, 0x0625);
-         addToLineBreakers(0x062F, 0x0632);
-         addToLineBreakers(0x0660, 0x066D); // numerals, math
-
-         addToLineBreakers(0x0671, 0x0677);
-         addToLineBreakers(0x0688, 0x0699);
-         addToLineBreakers(0x06C3, 0x06CB);
-         addToLineBreakers(0x06D2, 0x06F9);
-         addToLineBreakers(0x0759, 0x075B);
-         addToLineBreakers(0x08AA, 0x08AE);
-         addToLineBreakers(0xFB50, 0xFDFD); // presentation forms look like they could connect, but never do
-         // Presentation Forms A includes diacritics but they are meant to stand alone
-
-         addToLineBreakers(0xFE80, 0xFEFC); // presentation forms look like they could connect, but never do
-         // numerals, math
-
-         addToLineBreakers(0x10E60, 0x10E7F);
-         addToLineBreakers(0x1EC70, 0x1ECBF);
-         addToLineBreakers(0x1EE00, 0x1EEFF);
-       });
-
-       var GlyphSplitter_1 = createCommonjsModule(function (module, exports) {
-
-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-
-         function GlyphSplitter(word) {
-           var letters = [];
-           var lastLetter = '';
-           word.split('').forEach(function (letter) {
-             if (isArabic_1.isArabic(letter)) {
-               if (reference.tashkeel.indexOf(letter) > -1) {
-                 letters[letters.length - 1] += letter;
-               } else if (lastLetter.length && (reference.lams.indexOf(lastLetter) === 0 && reference.alefs.indexOf(letter) > -1 || reference.lams.indexOf(lastLetter) > 0 && reference.alefs.indexOf(letter) === 0)) {
-                 // valid LA forms
-                 letters[letters.length - 1] += letter;
-               } else {
-                 letters.push(letter);
-               }
-             } else {
-               letters.push(letter);
-             }
-
-             if (reference.tashkeel.indexOf(letter) === -1) {
-               lastLetter = letter;
-             }
-           });
-           return letters;
-         }
-
-         exports.GlyphSplitter = GlyphSplitter;
-       });
-
-       var BaselineSplitter_1 = createCommonjsModule(function (module, exports) {
-
-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-
-         function BaselineSplitter(word) {
-           var letters = [];
-           var lastLetter = '';
-           word.split('').forEach(function (letter) {
-             if (isArabic_1.isArabic(letter) && isArabic_1.isArabic(lastLetter)) {
-               if (lastLetter.length && reference.tashkeel.indexOf(letter) > -1) {
-                 letters[letters.length - 1] += letter;
-               } else if (reference.lineBreakers.indexOf(lastLetter) > -1) {
-                 letters.push(letter);
-               } else {
-                 letters[letters.length - 1] += letter;
-               }
-             } else {
-               letters.push(letter);
-             }
+       unicodeArabic["default"] = arabicReference;

 
 

-             if (reference.tashkeel.indexOf(letter) === -1) {
-               // don't allow tashkeel to hide line break
-               lastLetter = letter;
-             }
-           });
-           return letters;
-         }
+       var unicodeLigatures = {};

 
 

-         exports.BaselineSplitter = BaselineSplitter;
+       Object.defineProperty(unicodeLigatures, "__esModule", {
+         value: true

        });
        });

+       var ligatureReference = {
+         "\u0626\u0627": {
+           "isolated": "\uFBEA",
+           "final": "\uFBEB"
+         },
+         "\u0626\u06D5": {
+           "isolated": "\uFBEC",
+           "final": "\uFBED"
+         },
+         "\u0626\u0648": {
+           "isolated": "\uFBEE",
+           "final": "\uFBEF"
+         },
+         "\u0626\u06C7": {
+           "isolated": "\uFBF0",
+           "final": "\uFBF1"
+         },
+         "\u0626\u06C6": {
+           "isolated": "\uFBF2",
+           "final": "\uFBF3"
+         },
+         "\u0626\u06C8": {
+           "isolated": "\uFBF4",
+           "final": "\uFBF5"
+         },
+         "\u0626\u06D0": {
+           "isolated": "\uFBF6",
+           "final": "\uFBF7",
+           "initial": "\uFBF8"
+         },
+         "\u0626\u0649": {
+           "uighur_kirghiz": {
+             "isolated": "\uFBF9",
+             "final": "\uFBFA",
+             "initial": "\uFBFB"
+           },
+           "isolated": "\uFC03",
+           "final": "\uFC68"
+         },
+         "\u0626\u062C": {
+           "isolated": "\uFC00",
+           "initial": "\uFC97"
+         },
+         "\u0626\u062D": {
+           "isolated": "\uFC01",
+           "initial": "\uFC98"
+         },
+         "\u0626\u0645": {
+           "isolated": "\uFC02",
+           "final": "\uFC66",
+           "initial": "\uFC9A",
+           "medial": "\uFCDF"
+         },
+         "\u0626\u064A": {
+           "isolated": "\uFC04",
+           "final": "\uFC69"
+         },
+         "\u0628\u062C": {
+           "isolated": "\uFC05",
+           "initial": "\uFC9C"
+         },
+         "\u0628\u062D": {
+           "isolated": "\uFC06",
+           "initial": "\uFC9D"
+         },
+         "\u0628\u062E": {
+           "isolated": "\uFC07",
+           "initial": "\uFC9E"
+         },
+         "\u0628\u0645": {
+           "isolated": "\uFC08",
+           "final": "\uFC6C",
+           "initial": "\uFC9F",
+           "medial": "\uFCE1"
+         },
+         "\u0628\u0649": {
+           "isolated": "\uFC09",
+           "final": "\uFC6E"
+         },
+         "\u0628\u064A": {
+           "isolated": "\uFC0A",
+           "final": "\uFC6F"
+         },
+         "\u062A\u062C": {
+           "isolated": "\uFC0B",
+           "initial": "\uFCA1"
+         },
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+           "final": "\uFD80",
+           "initial": "\uFDB5"
+         },
+         "\u0644\u062D\u064A": {
+           "final": "\uFD81"
+         },
+         "\u0644\u062D\u0649": {
+           "final": "\uFD82"
+         },
+         "\u0644\u062C\u062C": {
+           "initial": "\uFD83",
+           "final": "\uFD84"
+         },
+         "\u0644\u062E\u0645": {
+           "final": "\uFD85",
+           "initial": "\uFD86"
+         },
+         "\u0644\u0645\u062D": {
+           "final": "\uFD87",
+           "initial": "\uFD88"
+         },
+         "\u0645\u062D\u062C": {
+           "initial": "\uFD89"
+         },
+         "\u0645\u062D\u0645": {
+           "initial": "\uFD8A"
+         },
+         "\u0645\u062D\u064A": {
+           "final": "\uFD8B"
+         },
+         "\u0645\u062C\u062D": {
+           "initial": "\uFD8C"
+         },
+         "\u0645\u062C\u0645": {
+           "initial": "\uFD8D"
+         },
+         "\u0645\u062E\u062C": {
+           "initial": "\uFD8E"
+         },
+         "\u0645\u062E\u0645": {
+           "initial": "\uFD8F"
+         },
+         "\u0645\u062C\u062E": {
+           "initial": "\uFD92"
+         },
+         "\u0647\u0645\u062C": {
+           "initial": "\uFD93"
+         },
+         "\u0647\u0645\u0645": {
+           "initial": "\uFD94"
+         },
+         "\u0646\u062D\u0645": {
+           "initial": "\uFD95"
+         },
+         "\u0646\u062D\u0649": {
+           "final": "\uFD96"
+         },
+         "\u0646\u062C\u0645": {
+           "final": "\uFD97",
+           "initial": "\uFD98"
+         },
+         "\u0646\u062C\u0649": {
+           "final": "\uFD99"
+         },
+         "\u0646\u0645\u064A": {
+           "final": "\uFD9A"
+         },
+         "\u0646\u0645\u0649": {
+           "final": "\uFD9B"
+         },
+         "\u064A\u0645\u0645": {
+           "final": "\uFD9C",
+           "initial": "\uFD9D"
+         },
+         "\u0628\u062E\u064A": {
+           "final": "\uFD9E"
+         },
+         "\u062A\u062C\u064A": {
+           "final": "\uFD9F"
+         },
+         "\u062A\u062C\u0649": {
+           "final": "\uFDA0"
+         },
+         "\u062A\u062E\u064A": {
+           "final": "\uFDA1"
+         },
+         "\u062A\u062E\u0649": {
+           "final": "\uFDA2"
+         },
+         "\u062A\u0645\u064A": {
+           "final": "\uFDA3"
+         },
+         "\u062A\u0645\u0649": {
+           "final": "\uFDA4"
+         },
+         "\u062C\u0645\u064A": {
+           "final": "\uFDA5"
+         },
+         "\u062C\u062D\u0649": {
+           "final": "\uFDA6"
+         },
+         "\u062C\u0645\u0649": {
+           "final": "\uFDA7"
+         },
+         "\u0633\u062E\u0649": {
+           "final": "\uFDA8"
+         },
+         "\u0635\u062D\u064A": {
+           "final": "\uFDA9"
+         },
+         "\u0634\u062D\u064A": {
+           "final": "\uFDAA"
+         },
+         "\u0636\u062D\u064A": {
+           "final": "\uFDAB"
+         },
+         "\u0644\u062C\u064A": {
+           "final": "\uFDAC"
+         },
+         "\u0644\u0645\u064A": {
+           "final": "\uFDAD"
+         },
+         "\u064A\u062D\u064A": {
+           "final": "\uFDAE"
+         },
+         "\u064A\u062C\u064A": {
+           "final": "\uFDAF"
+         },
+         "\u064A\u0645\u064A": {
+           "final": "\uFDB0"
+         },
+         "\u0645\u0645\u064A": {
+           "final": "\uFDB1"
+         },
+         "\u0642\u0645\u064A": {
+           "final": "\uFDB2"
+         },
+         "\u0646\u062D\u064A": {
+           "final": "\uFDB3"
+         },
+         "\u0639\u0645\u064A": {
+           "final": "\uFDB6"
+         },
+         "\u0643\u0645\u064A": {
+           "final": "\uFDB7"
+         },
+         "\u0646\u062C\u062D": {
+           "initial": "\uFDB8",
+           "final": "\uFDBD"
+         },
+         "\u0645\u062E\u064A": {
+           "final": "\uFDB9"
+         },
+         "\u0644\u062C\u0645": {
+           "initial": "\uFDBA",
+           "final": "\uFDBC"
+         },
+         "\u0643\u0645\u0645": {
+           "final": "\uFDBB",
+           "initial": "\uFDC3"
+         },
+         "\u062C\u062D\u064A": {
+           "final": "\uFDBE"
+         },
+         "\u062D\u062C\u064A": {
+           "final": "\uFDBF"
+         },
+         "\u0645\u062C\u064A": {
+           "final": "\uFDC0"
+         },
+         "\u0641\u0645\u064A": {
+           "final": "\uFDC1"
+         },
+         "\u0628\u062D\u064A": {
+           "final": "\uFDC2"
+         },
+         "\u0633\u062E\u064A": {
+           "final": "\uFDC6"
+         },
+         "\u0646\u062C\u064A": {
+           "final": "\uFDC7"
+         },
+         "\u0644\u0622": {
+           "isolated": "\uFEF5",
+           "final": "\uFEF6"
+         },
+         "\u0644\u0623": {
+           "isolated": "\uFEF7",
+           "final": "\uFEF8"
+         },
+         "\u0644\u0625": {
+           "isolated": "\uFEF9",
+           "final": "\uFEFA"
+         },
+         "\u0644\u0627": {
+           "isolated": "\uFEFB",
+           "final": "\uFEFC"
+         },
+         "words": {
+           "\u0635\u0644\u06D2": "\uFDF0",
+           "\u0642\u0644\u06D2": "\uFDF1",
+           "\u0627\u0644\u0644\u0647": "\uFDF2",
+           "\u0627\u0643\u0628\u0631": "\uFDF3",
+           "\u0645\u062D\u0645\u062F": "\uFDF4",
+           "\u0635\u0644\u0639\u0645": "\uFDF5",
+           "\u0631\u0633\u0648\u0644": "\uFDF6",
+           "\u0639\u0644\u064A\u0647": "\uFDF7",
+           "\u0648\u0633\u0644\u0645": "\uFDF8",
+           "\u0635\u0644\u0649": "\uFDF9",
+           "\u0635\u0644\u0649\u0627\u0644\u0644\u0647\u0639\u0644\u064A\u0647\u0648\u0633\u0644\u0645": "\uFDFA",
+           "\u062C\u0644\u062C\u0644\u0627\u0644\u0647": "\uFDFB",
+           "\u0631\u06CC\u0627\u0644": "\uFDFC"
+         }
+       };

 
 

-       var Normalization = createCommonjsModule(function (module, exports) {
-
-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-
-         function Normal(word, breakPresentationForm) {
-           // default is to turn initial/isolated/medial/final presentation form to generic
-           if (typeof breakPresentationForm === 'undefined') {
-             breakPresentationForm = true;
-           }
-
-           var returnable = '';
-           word.split('').forEach(function (letter) {
-             if (!isArabic_1.isArabic(letter)) {
-               returnable += letter;
-               return;
-             }
-
-             for (var w = 0; w < reference.letterList.length; w++) {
-               // ok so we are checking this potential lettertron
-               var letterForms = unicodeArabic["default"][reference.letterList[w]];
-               var versions = Object.keys(letterForms);
-
-               for (var v = 0; v < versions.length; v++) {
-                 var localVersion = letterForms[versions[v]];
-
-                 if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
-                   // look at this embedded object
-                   var embeddedForms = Object.keys(localVersion);
-
-                   for (var ef = 0; ef < embeddedForms.length; ef++) {
-                     var form = localVersion[embeddedForms[ef]];
-
-                     if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
-                       // match
-                       // console.log('embedded match');
-                       if (form === letter) {
-                         // match exact
-                         if (breakPresentationForm && localVersion['normal'] && ['isolated', 'initial', 'medial', 'final'].indexOf(embeddedForms[ef]) > -1) {
-                           // replace presentation form
-                           // console.log('keeping normal form of the letter');
-                           if (_typeof(localVersion['normal']) === 'object') {
-                             returnable += localVersion['normal'][0];
-                           } else {
-                             returnable += localVersion['normal'];
-                           }
-
-                           return;
-                         } // console.log('keeping this letter');
-
-
-                         returnable += letter;
-                         return;
-                       } else if (_typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
-                         // match
-                         returnable += form[0]; // console.log('added the first letter from the same array');
-
-                         return;
-                       }
-                     }
-                   }
-                 } else if (localVersion === letter) {
-                   // match exact
-                   if (breakPresentationForm && letterForms['normal'] && ['isolated', 'initial', 'medial', 'final'].indexOf(versions[v]) > -1) {
-                     // replace presentation form
-                     // console.log('keeping normal form of the letter');
-                     if (_typeof(letterForms['normal']) === 'object') {
-                       returnable += letterForms['normal'][0];
-                     } else {
-                       returnable += letterForms['normal'];
-                     }
-
-                     return;
-                   } // console.log('keeping this letter');
-
-
-                   returnable += letter;
-                   return;
-                 } else if (_typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
-                   // match
-                   returnable += localVersion[0]; // console.log('added the first letter from the same array');
+       unicodeLigatures["default"] = ligatureReference;

 
 

-                   return;
-                 }
-               }
-             } // try ligatures
+       Object.defineProperty(reference, "__esModule", {
+         value: true
+       });
+       var unicode_arabic_1$3 = unicodeArabic;
+       var unicode_ligatures_1$2 = unicodeLigatures;
+       var letterList = Object.keys(unicode_arabic_1$3["default"]);
+       reference.letterList = letterList;
+       var ligatureList = Object.keys(unicode_ligatures_1$2["default"]);
+       reference.ligatureList = ligatureList;
+       var ligatureWordList = Object.keys(unicode_ligatures_1$2["default"].words);
+       reference.ligatureWordList = ligatureWordList;
+       var lams = "\u0644\u06B5\u06B6\u06B7\u06B8";
+       reference.lams = lams;
+       var alefs = "\u0627\u0622\u0623\u0625\u0671\u0672\u0673\u0675\u0773\u0774";
+       reference.alefs = alefs; // for (var l = 1; l < lams.length; l++) {
+       //   console.log('-');
+       //   for (var a = 0; a < alefs.length; a++) {
+       //     console.log(a + ': ' + lams[l] + alefs[a]);
+       //   }
+       // }

 
 

+       var tashkeel = "\u0605\u0640\u0670\u0674\u06DF\u06E7\u06E8";
+       reference.tashkeel = tashkeel;

 
 

-             for (var v2 = 0; v2 < reference.ligatureList.length; v2++) {
-               var normalForm = reference.ligatureList[v2];
+       function addToTashkeel(start, finish) {
+         for (var i = start; i <= finish; i++) {
+           reference.tashkeel = tashkeel += String.fromCharCode(i);
+         }
+       }

 
 

-               if (normalForm !== 'words') {
-                 var ligForms = Object.keys(unicodeLigatures["default"][normalForm]);
+       addToTashkeel(0x0610, 0x061A);
+       addToTashkeel(0x064B, 0x065F);
+       addToTashkeel(0x06D6, 0x06DC);
+       addToTashkeel(0x06E0, 0x06E4);
+       addToTashkeel(0x06EA, 0x06ED);
+       addToTashkeel(0x08D3, 0x08E1);
+       addToTashkeel(0x08E3, 0x08FF);
+       addToTashkeel(0xFE70, 0xFE7F);
+       var lineBreakers = "\u0627\u0629\u0648\u06C0\u06CF\u06FD\u06FE\u076B\u076C\u0771\u0773\u0774\u0778\u0779\u08E2\u08B1\u08B2\u08B9";
+       reference.lineBreakers = lineBreakers;

 
 

-                 for (var f = 0; f < ligForms.length; f++) {
-                   if (unicodeLigatures["default"][normalForm][ligForms[f]] === letter) {
-                     returnable += normalForm;
-                     return;
-                   }
-                 }
-               }
-             } // try words ligatures
+       function addToLineBreakers(start, finish) {
+         for (var i = start; i <= finish; i++) {
+           reference.lineBreakers = lineBreakers += String.fromCharCode(i);
+         }
+       }

 
 

+       addToLineBreakers(0x0600, 0x061F); // it's OK to include tashkeel in this range as it is ignored

 
 

-             for (var v3 = 0; v3 < reference.ligatureWordList.length; v3++) {
-               var _normalForm = reference.ligatureWordList[v3];
+       addToLineBreakers(0x0621, 0x0625);
+       addToLineBreakers(0x062F, 0x0632);
+       addToLineBreakers(0x0660, 0x066D); // numerals, math

 
 

-               if (unicodeLigatures["default"].words[_normalForm] === letter) {
-                 returnable += _normalForm;
-                 return;
-               }
-             }
+       addToLineBreakers(0x0671, 0x0677);
+       addToLineBreakers(0x0688, 0x0699);
+       addToLineBreakers(0x06C3, 0x06CB);
+       addToLineBreakers(0x06D2, 0x06F9);
+       addToLineBreakers(0x0759, 0x075B);
+       addToLineBreakers(0x08AA, 0x08AE);
+       addToLineBreakers(0xFB50, 0xFDFD); // presentation forms look like they could connect, but never do
+       // Presentation Forms A includes diacritics but they are meant to stand alone

 
 

-             returnable += letter; // console.log('kept the letter')
-           });
-           return returnable;
-         }
+       addToLineBreakers(0xFE80, 0xFEFC); // presentation forms look like they could connect, but never do
+       // numerals, math

 
 

-         exports.Normal = Normal;
-       });
+       addToLineBreakers(0x10E60, 0x10E7F);
+       addToLineBreakers(0x1EC70, 0x1ECBF);
+       addToLineBreakers(0x1EE00, 0x1EEFF);

 
 

-       var CharShaper_1 = createCommonjsModule(function (module, exports) {
+       Object.defineProperty(GlyphSplitter$1, "__esModule", {
+         value: true
+       });
+       var isArabic_1$6 = isArabic$1;
+       var reference_1$5 = reference;
+
+       function GlyphSplitter(word) {
+         var letters = [];
+         var lastLetter = '';
+         word.split('').forEach(function (letter) {
+           if (isArabic_1$6.isArabic(letter)) {
+             if (reference_1$5.tashkeel.indexOf(letter) > -1) {
+               letters[letters.length - 1] += letter;
+             } else if (lastLetter.length && (reference_1$5.lams.indexOf(lastLetter) === 0 && reference_1$5.alefs.indexOf(letter) > -1 || reference_1$5.lams.indexOf(lastLetter) > 0 && reference_1$5.alefs.indexOf(letter) === 0)) {
+               // valid LA forms
+               letters[letters.length - 1] += letter;
+             } else {
+               letters.push(letter);
+             }
+           } else {
+             letters.push(letter);
+           }

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
+           if (reference_1$5.tashkeel.indexOf(letter) === -1) {
+             lastLetter = letter;
+           }

          });
          });

+         return letters;
+       }
+
+       GlyphSplitter$1.GlyphSplitter = GlyphSplitter;
+
+       var BaselineSplitter$1 = {};
+
+       Object.defineProperty(BaselineSplitter$1, "__esModule", {
+         value: true
+       });
+       var isArabic_1$5 = isArabic$1;
+       var reference_1$4 = reference;
+
+       function BaselineSplitter(word) {
+         var letters = [];
+         var lastLetter = '';
+         word.split('').forEach(function (letter) {
+           if (isArabic_1$5.isArabic(letter) && isArabic_1$5.isArabic(lastLetter)) {
+             if (lastLetter.length && reference_1$4.tashkeel.indexOf(letter) > -1) {
+               letters[letters.length - 1] += letter;
+             } else if (reference_1$4.lineBreakers.indexOf(lastLetter) > -1) {
+               letters.push(letter);
+             } else {
+               letters[letters.length - 1] += letter;
+             }
+           } else {
+             letters.push(letter);
+           }

 
 

-         function CharShaper(letter, form) {
-           if (!isArabic_1.isArabic(letter)) {
-             // fail not Arabic
-             throw new Error('Not Arabic');
+           if (reference_1$4.tashkeel.indexOf(letter) === -1) {
+             // don't allow tashkeel to hide line break
+             lastLetter = letter;

            }
            }

+         });
+         return letters;
+       }
+
+       BaselineSplitter$1.BaselineSplitter = BaselineSplitter;
+
+       var Normalization = {};
+
+       Object.defineProperty(Normalization, "__esModule", {
+         value: true
+       });
+       var unicode_arabic_1$2 = unicodeArabic;
+       var unicode_ligatures_1$1 = unicodeLigatures;
+       var isArabic_1$4 = isArabic$1;
+       var reference_1$3 = reference;
+
+       function Normal(word, breakPresentationForm) {
+         // default is to turn initial/isolated/medial/final presentation form to generic
+         if (typeof breakPresentationForm === 'undefined') {
+           breakPresentationForm = true;
+         }

 
 

-           if (letter === "\u0621") {
-             // hamza alone
-             return "\u0621";
+         var returnable = '';
+         word.split('').forEach(function (letter) {
+           if (!isArabic_1$4.isArabic(letter)) {
+             returnable += letter;
+             return;

            }
 
            }
 

-           for (var w = 0; w < reference.letterList.length; w++) {
+           for (var w = 0; w < reference_1$3.letterList.length; w++) {

              // ok so we are checking this potential lettertron
              // ok so we are checking this potential lettertron

-             var letterForms = unicodeArabic["default"][reference.letterList[w]];
+             var letterForms = unicode_arabic_1$2["default"][reference_1$3.letterList[w]];

              var versions = Object.keys(letterForms);
 
              for (var v = 0; v < versions.length; v++) {
                var localVersion = letterForms[versions[v]];
 
              var versions = Object.keys(letterForms);
 
              for (var v = 0; v < versions.length; v++) {
                var localVersion = letterForms[versions[v]];
 

-               if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
-                 if (versions.indexOf(form) > -1) {
-                   return letterForms[form];
-                 }
-               } else if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
-                 // check embedded
-                 var embeddedVersions = Object.keys(localVersion);
-
-                 for (var ev = 0; ev < embeddedVersions.length; ev++) {
-                   if (localVersion[embeddedVersions[ev]] === letter || _typeof(localVersion[embeddedVersions[ev]]) === 'object' && localVersion[embeddedVersions[ev]].indexOf && localVersion[embeddedVersions[ev]].indexOf(letter) > -1) {
-                     if (embeddedVersions.indexOf(form) > -1) {
-                       return localVersion[form];
+               if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
+                 // look at this embedded object
+                 var embeddedForms = Object.keys(localVersion);
+
+                 for (var ef = 0; ef < embeddedForms.length; ef++) {
+                   var form = localVersion[embeddedForms[ef]];
+
+                   if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
+                     // match
+                     // console.log('embedded match');
+                     if (form === letter) {
+                       // match exact
+                       if (breakPresentationForm && localVersion['normal'] && ['isolated', 'initial', 'medial', 'final'].indexOf(embeddedForms[ef]) > -1) {
+                         // replace presentation form
+                         // console.log('keeping normal form of the letter');
+                         if (_typeof(localVersion['normal']) === 'object') {
+                           returnable += localVersion['normal'][0];
+                         } else {
+                           returnable += localVersion['normal'];
+                         }
+
+                         return;
+                       } // console.log('keeping this letter');
+
+
+                       returnable += letter;
+                       return;
+                     } else if (_typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
+                       // match
+                       returnable += form[0]; // console.log('added the first letter from the same array');
+
+                       return;

                      }
                    }
                  }
                      }
                    }
                  }

+               } else if (localVersion === letter) {
+                 // match exact
+                 if (breakPresentationForm && letterForms['normal'] && ['isolated', 'initial', 'medial', 'final'].indexOf(versions[v]) > -1) {
+                   // replace presentation form
+                   // console.log('keeping normal form of the letter');
+                   if (_typeof(letterForms['normal']) === 'object') {
+                     returnable += letterForms['normal'][0];
+                   } else {
+                     returnable += letterForms['normal'];
+                   }
+
+                   return;
+                 } // console.log('keeping this letter');
+
+
+                 returnable += letter;
+                 return;
+               } else if (_typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
+                 // match
+                 returnable += localVersion[0]; // console.log('added the first letter from the same array');
+
+                 return;
+               }
+             }
+           } // try ligatures
+
+
+           for (var v2 = 0; v2 < reference_1$3.ligatureList.length; v2++) {
+             var normalForm = reference_1$3.ligatureList[v2];
+
+             if (normalForm !== 'words') {
+               var ligForms = Object.keys(unicode_ligatures_1$1["default"][normalForm]);
+
+               for (var f = 0; f < ligForms.length; f++) {
+                 if (unicode_ligatures_1$1["default"][normalForm][ligForms[f]] === letter) {
+                   returnable += normalForm;
+                   return;
+                 }

                }
              }
                }
              }

+           } // try words ligatures
+
+
+           for (var v3 = 0; v3 < reference_1$3.ligatureWordList.length; v3++) {
+             var _normalForm = reference_1$3.ligatureWordList[v3];
+
+             if (unicode_ligatures_1$1["default"].words[_normalForm] === letter) {
+               returnable += _normalForm;
+               return;
+             }

            }
            }

-         }

 
 

-         exports.CharShaper = CharShaper;
+           returnable += letter; // console.log('kept the letter')
+         });
+         return returnable;
+       }
+
+       Normalization.Normal = Normal;
+
+       var CharShaper$1 = {};
+
+       Object.defineProperty(CharShaper$1, "__esModule", {
+         value: true

        });
        });

+       var unicode_arabic_1$1 = unicodeArabic;
+       var isArabic_1$3 = isArabic$1;
+       var reference_1$2 = reference;

 
 

-       var WordShaper_1 = createCommonjsModule(function (module, exports) {
+       function CharShaper(letter, form) {
+         if (!isArabic_1$3.isArabic(letter)) {
+           // fail not Arabic
+           throw new Error('Not Arabic');
+         }

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
+         if (letter === "\u0621") {
+           // hamza alone
+           return "\u0621";
+         }

 
 

-         function WordShaper(word) {
-           var state = 'initial';
-           var output = '';
+         for (var w = 0; w < reference_1$2.letterList.length; w++) {
+           // ok so we are checking this potential lettertron
+           var letterForms = unicode_arabic_1$1["default"][reference_1$2.letterList[w]];
+           var versions = Object.keys(letterForms);

 
 

-           for (var w = 0; w < word.length; w++) {
-             var nextLetter = ' ';
+           for (var v = 0; v < versions.length; v++) {
+             var localVersion = letterForms[versions[v]];

 
 

-             for (var nxw = w + 1; nxw < word.length; nxw++) {
-               if (!isArabic_1.isArabic(word[nxw])) {
-                 break;
+             if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
+               if (versions.indexOf(form) > -1) {
+                 return letterForms[form];

                }
                }

+             } else if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
+               // check embedded
+               var embeddedVersions = Object.keys(localVersion);

 
 

-               if (reference.tashkeel.indexOf(word[nxw]) === -1) {
-                 nextLetter = word[nxw];
-                 break;
+               for (var ev = 0; ev < embeddedVersions.length; ev++) {
+                 if (localVersion[embeddedVersions[ev]] === letter || _typeof(localVersion[embeddedVersions[ev]]) === 'object' && localVersion[embeddedVersions[ev]].indexOf && localVersion[embeddedVersions[ev]].indexOf(letter) > -1) {
+                   if (embeddedVersions.indexOf(form) > -1) {
+                     return localVersion[form];
+                   }
+                 }

                }
              }
                }
              }

+           }
+         }
+       }

 
 

-             if (!isArabic_1.isArabic(word[w]) || isArabic_1.isMath(word[w])) {
-               // space or other non-Arabic
-               output += word[w];
-               state = 'initial';
-             } else if (reference.tashkeel.indexOf(word[w]) > -1) {
-               // tashkeel - add without changing state
-               output += word[w];
-             } else if (nextLetter === ' ' || // last Arabic letter in this word
-             reference.lineBreakers.indexOf(word[w]) > -1) {
-               // the current letter is known to break lines
-               output += CharShaper_1.CharShaper(word[w], state === 'initial' ? 'isolated' : 'final');
-               state = 'initial';
-             } else if (reference.lams.indexOf(word[w]) > -1 && reference.alefs.indexOf(nextLetter) > -1) {
-               // LA letters - advance an additional letter after this
-               output += unicodeLigatures["default"][word[w] + nextLetter][state === 'initial' ? 'isolated' : 'final'];
+       CharShaper$1.CharShaper = CharShaper;

 
 

-               while (word[w] !== nextLetter) {
-                 w++;
-               }
+       var WordShaper$2 = {};

 
 

-               state = 'initial';
-             } else {
-               output += CharShaper_1.CharShaper(word[w], state);
-               state = 'medial';
+       Object.defineProperty(WordShaper$2, "__esModule", {
+         value: true
+       });
+       var isArabic_1$2 = isArabic$1;
+       var reference_1$1 = reference;
+       var CharShaper_1$1 = CharShaper$1;
+       var unicode_ligatures_1 = unicodeLigatures;
+
+       function WordShaper$1(word) {
+         var state = 'initial';
+         var output = '';
+
+         for (var w = 0; w < word.length; w++) {
+           var nextLetter = ' ';
+
+           for (var nxw = w + 1; nxw < word.length; nxw++) {
+             if (!isArabic_1$2.isArabic(word[nxw])) {
+               break;
+             }
+
+             if (reference_1$1.tashkeel.indexOf(word[nxw]) === -1) {
+               nextLetter = word[nxw];
+               break;

              }
            }
 
              }
            }
 

-           return output;
+           if (!isArabic_1$2.isArabic(word[w]) || isArabic_1$2.isMath(word[w])) {
+             // space or other non-Arabic
+             output += word[w];
+             state = 'initial';
+           } else if (reference_1$1.tashkeel.indexOf(word[w]) > -1) {
+             // tashkeel - add without changing state
+             output += word[w];
+           } else if (nextLetter === ' ' || // last Arabic letter in this word
+           reference_1$1.lineBreakers.indexOf(word[w]) > -1) {
+             // the current letter is known to break lines
+             output += CharShaper_1$1.CharShaper(word[w], state === 'initial' ? 'isolated' : 'final');
+             state = 'initial';
+           } else if (reference_1$1.lams.indexOf(word[w]) > -1 && reference_1$1.alefs.indexOf(nextLetter) > -1) {
+             // LA letters - advance an additional letter after this
+             output += unicode_ligatures_1["default"][word[w] + nextLetter][state === 'initial' ? 'isolated' : 'final'];
+
+             while (word[w] !== nextLetter) {
+               w++;
+             }
+
+             state = 'initial';
+           } else {
+             output += CharShaper_1$1.CharShaper(word[w], state);
+             state = 'medial';
+           }

          }
 
          }
 

-         exports.WordShaper = WordShaper;
-       });
+         return output;
+       }

 
 

-       var ParentLetter_1 = createCommonjsModule(function (module, exports) {
+       WordShaper$2.WordShaper = WordShaper$1;

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
+       var ParentLetter$1 = {};

 
 

-         function ParentLetter(letter) {
-           if (!isArabic_1.isArabic(letter)) {
-             throw new Error('Not an Arabic letter');
-           }
+       Object.defineProperty(ParentLetter$1, "__esModule", {
+         value: true
+       });
+       var unicode_arabic_1 = unicodeArabic;
+       var isArabic_1$1 = isArabic$1;
+       var reference_1 = reference;

 
 

-           for (var w = 0; w < reference.letterList.length; w++) {
-             // ok so we are checking this potential lettertron
-             var letterForms = unicodeArabic["default"][reference.letterList[w]];
-             var versions = Object.keys(letterForms);
+       function ParentLetter(letter) {
+         if (!isArabic_1$1.isArabic(letter)) {
+           throw new Error('Not an Arabic letter');
+         }

 
 

-             for (var v = 0; v < versions.length; v++) {
-               var localVersion = letterForms[versions[v]];
+         for (var w = 0; w < reference_1.letterList.length; w++) {
+           // ok so we are checking this potential lettertron
+           var letterForms = unicode_arabic_1["default"][reference_1.letterList[w]];
+           var versions = Object.keys(letterForms);

 
 

-               if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
-                 // look at this embedded object
-                 var embeddedForms = Object.keys(localVersion);
+           for (var v = 0; v < versions.length; v++) {
+             var localVersion = letterForms[versions[v]];

 
 

-                 for (var ef = 0; ef < embeddedForms.length; ef++) {
-                   var form = localVersion[embeddedForms[ef]];
+             if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
+               // look at this embedded object
+               var embeddedForms = Object.keys(localVersion);

 
 

-                   if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
-                     // match
-                     return localVersion;
-                   }
+               for (var ef = 0; ef < embeddedForms.length; ef++) {
+                 var form = localVersion[embeddedForms[ef]];
+
+                 if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
+                   // match
+                   return localVersion;

                  }
                  }

-               } else if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
-                 // match
-                 return letterForms;

                }
                }

+             } else if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
+               // match
+               return letterForms;

              }
              }

-
-             return null;

            }
            }

+
+           return null;

          }
          }

+       }

 
 

-         exports.ParentLetter = ParentLetter;
+       ParentLetter$1.ParentLetter = ParentLetter;

 
 

-         function GrandparentLetter(letter) {
-           if (!isArabic_1.isArabic(letter)) {
-             throw new Error('Not an Arabic letter');
-           }
+       function GrandparentLetter(letter) {
+         if (!isArabic_1$1.isArabic(letter)) {
+           throw new Error('Not an Arabic letter');
+         }

 
 

-           for (var w = 0; w < reference.letterList.length; w++) {
-             // ok so we are checking this potential lettertron
-             var letterForms = unicodeArabic["default"][reference.letterList[w]];
-             var versions = Object.keys(letterForms);
+         for (var w = 0; w < reference_1.letterList.length; w++) {
+           // ok so we are checking this potential lettertron
+           var letterForms = unicode_arabic_1["default"][reference_1.letterList[w]];
+           var versions = Object.keys(letterForms);

 
 

-             for (var v = 0; v < versions.length; v++) {
-               var localVersion = letterForms[versions[v]];
+           for (var v = 0; v < versions.length; v++) {
+             var localVersion = letterForms[versions[v]];

 
 

-               if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
-                 // look at this embedded object
-                 var embeddedForms = Object.keys(localVersion);
+             if (_typeof(localVersion) === 'object' && typeof localVersion.indexOf === 'undefined') {
+               // look at this embedded object
+               var embeddedForms = Object.keys(localVersion);

 
 

-                 for (var ef = 0; ef < embeddedForms.length; ef++) {
-                   var form = localVersion[embeddedForms[ef]];
+               for (var ef = 0; ef < embeddedForms.length; ef++) {
+                 var form = localVersion[embeddedForms[ef]];

 
 

-                   if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
-                     // match
-                     return letterForms;
-                   }
+                 if (form === letter || _typeof(form) === 'object' && form.indexOf && form.indexOf(letter) > -1) {
+                   // match
+                   return letterForms;

                  }
                  }

-               } else if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
-                 // match
-                 return letterForms;

                }
                }

+             } else if (localVersion === letter || _typeof(localVersion) === 'object' && localVersion.indexOf && localVersion.indexOf(letter) > -1) {
+               // match
+               return letterForms;

              }
              }

-
-             return null;

            }
            }

-         }

 
 

-         exports.GrandparentLetter = GrandparentLetter;
-       });
+           return null;
+         }
+       }

 
 

-       var lib = createCommonjsModule(function (module, exports) {
+       ParentLetter$1.GrandparentLetter = GrandparentLetter;

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         exports.isArabic = isArabic_1.isArabic;
-         exports.GlyphSplitter = GlyphSplitter_1.GlyphSplitter;
-         exports.BaselineSplitter = BaselineSplitter_1.BaselineSplitter;
-         exports.Normal = Normalization.Normal;
-         exports.CharShaper = CharShaper_1.CharShaper;
-         exports.WordShaper = WordShaper_1.WordShaper;
-         exports.ParentLetter = ParentLetter_1.ParentLetter;
-         exports.GrandparentLetter = ParentLetter_1.GrandparentLetter;
+       Object.defineProperty(lib, "__esModule", {
+         value: true

        });
        });

+       var isArabic_1 = isArabic$1;
+       lib.isArabic = isArabic_1.isArabic;
+       var GlyphSplitter_1 = GlyphSplitter$1;
+       lib.GlyphSplitter = GlyphSplitter_1.GlyphSplitter;
+       var BaselineSplitter_1 = BaselineSplitter$1;
+       lib.BaselineSplitter = BaselineSplitter_1.BaselineSplitter;
+       var Normalization_1 = Normalization;
+       lib.Normal = Normalization_1.Normal;
+       var CharShaper_1 = CharShaper$1;
+       lib.CharShaper = CharShaper_1.CharShaper;
+       var WordShaper_1 = WordShaper$2;
+       var WordShaper = lib.WordShaper = WordShaper_1.WordShaper;
+       var ParentLetter_1 = ParentLetter$1;
+       lib.ParentLetter = ParentLetter_1.ParentLetter;
+       lib.GrandparentLetter = ParentLetter_1.GrandparentLetter;

 
        var rtlRegex = /[\u0590-\u05FF\u0600-\u06FF\u0750-\u07BF\u08A0–\u08BF]/;
        function fixRTLTextForSvg(inputText) {
 
        var rtlRegex = /[\u0590-\u05FF\u0600-\u06FF\u0750-\u07BF\u08A0–\u08BF]/;
        function fixRTLTextForSvg(inputText) {


@@ -19652,7 +20798,7 @@
          var hebrewSign = /[\u0591-\u05bd\u05bf\u05c1-\u05c5\u05c7]/; // Arabic word shaping
 
          if (arabicRegex.test(inputText)) {
          var hebrewSign = /[\u0591-\u05bd\u05bf\u05c1-\u05c5\u05c7]/; // Arabic word shaping
 
          if (arabicRegex.test(inputText)) {

-           inputText = lib.WordShaper(inputText);
+           inputText = WordShaper(inputText);

          }
 
          for (var n = 0; n < inputText.length; n++) {
          }
 
          for (var n = 0; n < inputText.length; n++) {


@@ -19688,10 +20834,13 @@
          return ret;
        }
 
          return ret;
        }
 

+       var DESCRIPTORS$1 = descriptors;
+       var objectKeys = objectKeys$4;
+       var toIndexedObject = toIndexedObject$b;

        var propertyIsEnumerable = objectPropertyIsEnumerable.f;
 
        // `Object.{ entries, values }` methods implementation
        var propertyIsEnumerable = objectPropertyIsEnumerable.f;
 
        // `Object.{ entries, values }` methods implementation

-       var createMethod$5 = function (TO_ENTRIES) {
+       var createMethod$1 = function (TO_ENTRIES) {

          return function (it) {
            var O = toIndexedObject(it);
            var keys = objectKeys(O);
          return function (it) {
            var O = toIndexedObject(it);
            var keys = objectKeys(O);


@@ -19701,7 +20850,7 @@
            var key;
            while (length > i) {
              key = keys[i++];
            var key;
            while (length > i) {
              key = keys[i++];

-             if (!descriptors || propertyIsEnumerable.call(O, key)) {
+             if (!DESCRIPTORS$1 || propertyIsEnumerable.call(O, key)) {

                result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
              }
            }
                result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
              }
            }


@@ -19711,18 +20860,19 @@
 
        var objectToArray = {
          // `Object.entries` method
 
        var objectToArray = {
          // `Object.entries` method

-         // https://tc39.github.io/ecma262/#sec-object.entries
-         entries: createMethod$5(true),
+         // https://tc39.es/ecma262/#sec-object.entries
+         entries: createMethod$1(true),

          // `Object.values` method
          // `Object.values` method

-         // https://tc39.github.io/ecma262/#sec-object.values
-         values: createMethod$5(false)
+         // https://tc39.es/ecma262/#sec-object.values
+         values: createMethod$1(false)

        };
 
        };
 

+       var $$k = _export;

        var $values = objectToArray.values;
 
        // `Object.values` method
        var $values = objectToArray.values;
 
        // `Object.values` method

-       // https://tc39.github.io/ecma262/#sec-object.values
-       _export({ target: 'Object', stat: true }, {
+       // https://tc39.es/ecma262/#sec-object.values
+       $$k({ target: 'Object', stat: true }, {

          values: function values(O) {
            return $values(O);
          }
          values: function values(O) {
            return $values(O);
          }


@@ -19755,10 +20905,17 @@
        // within and between iD sessions on the same site.
        //
 
        // within and between iD sessions on the same site.
        //
 

+       /**
+        * @param {string} k
+        * @param {string?} v
+        * @returns {boolean} true if the action succeeded
+        */
+

 
        function corePreferences(k, v) {
          try {
            if (arguments.length === 1) return _storage.getItem(k);else if (v === null) _storage.removeItem(k);else _storage.setItem(k, v);
 
        function corePreferences(k, v) {
          try {
            if (arguments.length === 1) return _storage.getItem(k);else if (v === null) _storage.removeItem(k);else _storage.setItem(k, v);

+           return true;

          } catch (e) {
            /* eslint-disable no-console */
            if (typeof console !== 'undefined') {
          } catch (e) {
            /* eslint-disable no-console */
            if (typeof console !== 'undefined') {


@@ -19766,63 +20923,114 @@
            }
            /* eslint-enable no-console */
 
            }
            /* eslint-enable no-console */
 

+
+           return false;

          }
        }
 
          }
        }
 

-       function responseText(response) {
-         if (!response.ok) throw new Error(response.status + " " + response.statusText);
-         return response.text();
-       }
+       var vparse = {exports: {}};

 
 

-       function d3_text (input, init) {
-         return fetch(input, init).then(responseText);
-       }
+       (function (module) {
+         (function (window) {

 
 

-       function responseJson(response) {
-         if (!response.ok) throw new Error(response.status + " " + response.statusText);
-         if (response.status === 204 || response.status === 205) return;
-         return response.json();
-       }
+           function parseVersion(v) {
+             var m = v.replace(/[^0-9.]/g, '').match(/[0-9]*\.|[0-9]+/g) || [];
+             v = {
+               major: +m[0] || 0,
+               minor: +m[1] || 0,
+               patch: +m[2] || 0,
+               build: +m[3] || 0
+             };
+             v.isEmpty = !v.major && !v.minor && !v.patch && !v.build;
+             v.parsed = [v.major, v.minor, v.patch, v.build];
+             v.text = v.parsed.join('.');
+             v.compare = compare;
+             return v;
+           }

 
 

-       function d3_json (input, init) {
-         return fetch(input, init).then(responseJson);
-       }
+           function compare(v) {
+             if (typeof v === 'string') {
+               v = parseVersion(v);
+             }

 
 

-       function parser(type) {
-         return function (input, init) {
-           return d3_text(input, init).then(function (text) {
-             return new DOMParser().parseFromString(text, type);
-           });
-         };
-       }
+             for (var i = 0; i < 4; i++) {
+               if (this.parsed[i] !== v.parsed[i]) {
+                 return this.parsed[i] > v.parsed[i] ? 1 : -1;
+               }
+             }

 
 

-       var d3_xml = parser("application/xml");
-       var svg = parser("image/svg+xml");
+             return 0;
+           }
+           /* istanbul ignore next */
+
+
+           if (module && 'object' === 'object') {
+             module.exports = parseVersion;
+           } else {
+             window.parseVersion = parseVersion;
+           }
+         })(commonjsGlobal);
+       })(vparse);
+
+       var parseVersion = vparse.exports;
+
+       var name = "iD";
+       var version = "2.20.2";
+       var description = "A friendly editor for OpenStreetMap";
+       var main = "dist/iD.min.js";
+       var repository = "github:openstreetmap/iD";
+       var homepage = "https://github.com/openstreetmap/iD";
+       var bugs = "https://github.com/openstreetmap/iD/issues";
+       var keywords = ["editor","openstreetmap"];
+       var license = "ISC";
+       var scripts = {all:"npm-run-all -s clean build build:legacy dist",build:"npm-run-all -s build:css build:data build:dev","build:css":"node scripts/build_css.js","build:data":"shx mkdir -p dist/data && node scripts/build_data.js","build:dev":"rollup --config config/rollup.config.dev.js","build:legacy":"rollup --config config/rollup.config.legacy.js","build:stats":"rollup --config config/rollup.config.stats.js",clean:"shx rm -f dist/*.js dist/*.map dist/*.css dist/img/*.svg",dist:"npm-run-all -p dist:**","dist:mapillary":"shx mkdir -p dist/mapillary-js && shx cp -R node_modules/mapillary-js/dist/* dist/mapillary-js/","dist:pannellum":"shx mkdir -p dist/pannellum-streetside && shx cp -R node_modules/pannellum/build/* dist/pannellum-streetside/","dist:min:iD":"uglifyjs dist/iD.legacy.js --compress --mangle --output dist/iD.min.js","dist:svg:iD":"svg-sprite --symbol --symbol-dest . --shape-id-generator \"iD-%s\" --symbol-sprite dist/img/iD-sprite.svg \"svg/iD-sprite/**/*.svg\"","dist:svg:community":"svg-sprite --symbol --symbol-dest . --shape-id-generator \"community-%s\" --symbol-sprite dist/img/community-sprite.svg node_modules/osm-community-index/dist/img/*.svg","dist:svg:fa":"svg-sprite --symbol --symbol-dest . --symbol-sprite dist/img/fa-sprite.svg svg/fontawesome/*.svg","dist:svg:maki":"svg-sprite --symbol --symbol-dest . --shape-id-generator \"maki-%s\" --symbol-sprite dist/img/maki-sprite.svg node_modules/@mapbox/maki/icons/*.svg","dist:svg:mapillary:signs":"svg-sprite --symbol --symbol-dest . --symbol-sprite dist/img/mapillary-sprite.svg node_modules/mapillary_sprite_source/package_signs/*.svg","dist:svg:mapillary:objects":"svg-sprite --symbol --symbol-dest . --symbol-sprite dist/img/mapillary-object-sprite.svg node_modules/mapillary_sprite_source/package_objects/*.svg","dist:svg:temaki":"svg-sprite --symbol --symbol-dest . --shape-id-generator \"temaki-%s\" --symbol-sprite dist/img/temaki-sprite.svg node_modules/@ideditor/temaki/icons/*.svg",imagery:"node scripts/update_imagery.js",lint:"eslint scripts test/spec modules","lint:fix":"eslint scripts test/spec modules --fix",start:"npm-run-all -s build start:server",quickstart:"npm-run-all -s build:dev start:server","start:server":"node scripts/server.js",test:"npm-run-all -s lint build:css build:data build:legacy test:spec","test:spec":"phantomjs --web-security=no node_modules/mocha-phantomjs-core/mocha-phantomjs-core.js test/index.html spec",translations:"node scripts/update_locales.js"};
+       var dependencies = {"@ideditor/country-coder":"~5.0.3","@ideditor/location-conflation":"~1.0.2","@mapbox/geojson-area":"^0.2.2","@mapbox/sexagesimal":"1.2.0","@mapbox/vector-tile":"^1.3.1","@tmcw/togeojson":"^4.5.0","@turf/bbox-clip":"^6.0.0","abortcontroller-polyfill":"^1.4.0","aes-js":"^3.1.2","alif-toolkit":"^1.2.9","core-js":"^3.6.5",diacritics:"1.3.0","fast-deep-equal":"~3.1.1","fast-json-stable-stringify":"2.1.0","lodash-es":"~4.17.15",marked:"~2.0.0","node-diff3":"2.1.0","osm-auth":"1.1.0",pannellum:"2.5.6",pbf:"^3.2.1","polygon-clipping":"~0.15.1",rbush:"3.0.1","whatwg-fetch":"^3.4.1","which-polygon":"2.2.0"};
+       var devDependencies = {"@babel/core":"^7.11.6","@babel/preset-env":"^7.11.5","@fortawesome/fontawesome-svg-core":"^1.2.32","@fortawesome/free-brands-svg-icons":"~5.15.1","@fortawesome/free-regular-svg-icons":"~5.15.1","@fortawesome/free-solid-svg-icons":"~5.15.1","@ideditor/temaki":"~4.4.0","@mapbox/maki":"^6.0.0","@rollup/plugin-babel":"^5.2.1","@rollup/plugin-commonjs":"^21.0.0","@rollup/plugin-json":"^4.0.1","@rollup/plugin-node-resolve":"~13.0.5",autoprefixer:"^10.0.1",btoa:"^1.2.1",chai:"^4.1.0","cldr-core":"37.0.0","cldr-localenames-full":"37.0.0",colors:"^1.1.2","concat-files":"^0.1.1",d3:"~6.6.0","editor-layer-index":"github:osmlab/editor-layer-index#gh-pages",eslint:"^7.1.0",gaze:"^1.1.3",glob:"^7.1.0",happen:"^0.3.1","js-yaml":"^4.0.0","json-stringify-pretty-compact":"^3.0.0",mapillary_sprite_source:"^1.8.0","mapillary-js":"4.0.0",minimist:"^1.2.3",mocha:"^7.0.1","mocha-phantomjs-core":"^2.1.0","name-suggestion-index":"~6.0","node-fetch":"^2.6.1","npm-run-all":"^4.0.0","object-inspect":"1.10.3","osm-community-index":"~5.1.0","phantomjs-prebuilt":"~2.1.16",postcss:"^8.1.1","postcss-selector-prepend":"^0.5.0",rollup:"~2.52.8","rollup-plugin-includepaths":"~0.2.3","rollup-plugin-progress":"^1.1.1","rollup-plugin-visualizer":"~4.2.0",shelljs:"^0.8.0",shx:"^0.3.0",sinon:"7.5.0","sinon-chai":"^3.3.0",smash:"0.0","static-server":"^2.2.1","svg-sprite":"1.5.1","uglify-js":"~3.13.0",vparse:"~1.1.0"};
+       var engines = {node:">=10"};
+       var browserslist = ["> 0.2%, last 6 major versions, Firefox ESR, IE 11, maintained node versions"];
+       var packageJSON = {
+       name: name,
+       version: version,
+       description: description,
+       main: main,
+       repository: repository,
+       homepage: homepage,
+       bugs: bugs,
+       keywords: keywords,
+       license: license,
+       scripts: scripts,
+       dependencies: dependencies,
+       devDependencies: devDependencies,
+       engines: engines,
+       browserslist: browserslist
+       };

 
        var _mainFileFetcher = coreFileFetcher(); // singleton
        // coreFileFetcher asynchronously fetches data from JSON files
        //
 
        function coreFileFetcher() {
 
        var _mainFileFetcher = coreFileFetcher(); // singleton
        // coreFileFetcher asynchronously fetches data from JSON files
        //
 
        function coreFileFetcher() {

+         var ociVersion = packageJSON.devDependencies['osm-community-index'];
+         var v = parseVersion(ociVersion);
+         var vMinor = "".concat(v.major, ".").concat(v.minor);

          var _this = {};
          var _inflight = {};
          var _fileMap = {
            'address_formats': 'data/address_formats.min.json',
          var _this = {};
          var _inflight = {};
          var _fileMap = {
            'address_formats': 'data/address_formats.min.json',

-           'deprecated': 'data/deprecated.min.json',
-           'discarded': 'data/discarded.min.json',
+           'deprecated': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/deprecated.min.json',
+           'discarded': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/discarded.min.json',

            'imagery': 'data/imagery.min.json',
            'intro_graph': 'data/intro_graph.min.json',
            'keepRight': 'data/keepRight.min.json',
            'languages': 'data/languages.min.json',
            'imagery': 'data/imagery.min.json',
            'intro_graph': 'data/intro_graph.min.json',
            'keepRight': 'data/keepRight.min.json',
            'languages': 'data/languages.min.json',

-           'locales': 'data/locales.min.json',
-           'nsi_brands': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/brands.min.json',
-           'nsi_filters': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/filters.min.json',
-           'oci_features': 'https://cdn.jsdelivr.net/npm/osm-community-index@2/dist/features.min.json',
-           'oci_resources': 'https://cdn.jsdelivr.net/npm/osm-community-index@2/dist/resources.min.json',
-           'preset_categories': 'data/preset_categories.min.json',
-           'preset_defaults': 'data/preset_defaults.min.json',
-           'preset_fields': 'data/preset_fields.min.json',
-           'preset_presets': 'data/preset_presets.min.json',
+           'locales': 'locales/index.min.json',
+           'oci_defaults': "https://cdn.jsdelivr.net/npm/osm-community-index@".concat(vMinor, "/dist/defaults.min.json"),
+           'oci_features': "https://cdn.jsdelivr.net/npm/osm-community-index@".concat(vMinor, "/dist/featureCollection.min.json"),
+           'oci_resources': "https://cdn.jsdelivr.net/npm/osm-community-index@".concat(vMinor, "/dist/resources.min.json"),
+           'preset_categories': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_categories.min.json',
+           'preset_defaults': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_defaults.min.json',
+           'preset_fields': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/fields.min.json',
+           'preset_presets': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/presets.min.json',

            'phone_formats': 'data/phone_formats.min.json',
            'qa_data': 'data/qa_data.min.json',
            'shortcuts': 'data/shortcuts.min.json',
            'phone_formats': 'data/phone_formats.min.json',
            'qa_data': 'data/qa_data.min.json',
            'shortcuts': 'data/shortcuts.min.json',


@@ -19853,7 +21061,16 @@
            var prom = _inflight[url];
 
            if (!prom) {
            var prom = _inflight[url];
 
            if (!prom) {

-             _inflight[url] = prom = d3_json(url).then(function (result) {
+             _inflight[url] = prom = fetch(url).then(function (response) {
+               // fetch in PhantomJS tests may return ok=false and status=0 even if it's okay
+               if (!response.ok && response.status !== 0 || !response.json) {
+                 throw new Error(response.status + ' ' + response.statusText);
+               }
+
+               if (response.status === 204 || response.status === 205) return; // No Content, Reset Content
+
+               return response.json();
+             }).then(function (result) {

                delete _inflight[url];
 
                if (!result) {
                delete _inflight[url];
 
                if (!result) {


@@ -19903,78897 +21120,82340 @@
          return _this;
        }
 
          return _this;
        }
 

-       var $findIndex$1 = arrayIteration.findIndex;
+       var classof = classofRaw$1;

 
 

+       // `thisNumberValue` abstract operation
+       // https://tc39.es/ecma262/#sec-thisnumbervalue
+       var thisNumberValue$2 = function (value) {
+         if (typeof value != 'number' && classof(value) != 'Number') {
+           throw TypeError('Incorrect invocation');
+         }
+         return +value;
+       };

 
 

+       var toInteger$1 = toInteger$b;
+       var requireObjectCoercible$6 = requireObjectCoercible$e;

 
 

-       var FIND_INDEX = 'findIndex';
-       var SKIPS_HOLES$1 = true;
+       // `String.prototype.repeat` method implementation
+       // https://tc39.es/ecma262/#sec-string.prototype.repeat
+       var stringRepeat = function repeat(count) {
+         var str = String(requireObjectCoercible$6(this));
+         var result = '';
+         var n = toInteger$1(count);
+         if (n < 0 || n == Infinity) throw RangeError('Wrong number of repetitions');
+         for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) result += str;
+         return result;
+       };

 
 

-       var USES_TO_LENGTH$b = arrayMethodUsesToLength(FIND_INDEX);
+       var $$j = _export;
+       var toInteger = toInteger$b;
+       var thisNumberValue$1 = thisNumberValue$2;
+       var repeat$2 = stringRepeat;
+       var fails$7 = fails$N;

 
 

-       // Shouldn't skip holes
-       if (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES$1 = false; });
+       var nativeToFixed = 1.0.toFixed;
+       var floor = Math.floor;

 
 

-       // `Array.prototype.findIndex` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.findindex
-       _export({ target: 'Array', proto: true, forced: SKIPS_HOLES$1 || !USES_TO_LENGTH$b }, {
-         findIndex: function findIndex(callbackfn /* , that = undefined */) {
-           return $findIndex$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+       var pow = function (x, n, acc) {
+         return n === 0 ? acc : n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc);
+       };
+
+       var log = function (x) {
+         var n = 0;
+         var x2 = x;
+         while (x2 >= 4096) {
+           n += 12;
+           x2 /= 4096;

          }
          }

-       });
+         while (x2 >= 2) {
+           n += 1;
+           x2 /= 2;
+         } return n;
+       };

 
 

-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables(FIND_INDEX);
+       var multiply = function (data, n, c) {
+         var index = -1;
+         var c2 = c;
+         while (++index < 6) {
+           c2 += n * data[index];
+           data[index] = c2 % 1e7;
+           c2 = floor(c2 / 1e7);
+         }
+       };

 
 

-       var $includes$1 = arrayIncludes.includes;
+       var divide = function (data, n) {
+         var index = 6;
+         var c = 0;
+         while (--index >= 0) {
+           c += data[index];
+           data[index] = floor(c / n);
+           c = (c % n) * 1e7;
+         }
+       };

 
 

+       var dataToString = function (data) {
+         var index = 6;
+         var s = '';
+         while (--index >= 0) {
+           if (s !== '' || index === 0 || data[index] !== 0) {
+             var t = String(data[index]);
+             s = s === '' ? t : s + repeat$2.call('0', 7 - t.length) + t;
+           }
+         } return s;
+       };

 
 

+       var FORCED$4 = nativeToFixed && (
+         0.00008.toFixed(3) !== '0.000' ||
+         0.9.toFixed(0) !== '1' ||
+         1.255.toFixed(2) !== '1.25' ||
+         1000000000000000128.0.toFixed(0) !== '1000000000000000128'
+       ) || !fails$7(function () {
+         // V8 ~ Android 4.3-
+         nativeToFixed.call({});
+       });

 
 

-       var USES_TO_LENGTH$c = arrayMethodUsesToLength('indexOf', { ACCESSORS: true, 1: 0 });
+       // `Number.prototype.toFixed` method
+       // https://tc39.es/ecma262/#sec-number.prototype.tofixed
+       $$j({ target: 'Number', proto: true, forced: FORCED$4 }, {
+         toFixed: function toFixed(fractionDigits) {
+           var number = thisNumberValue$1(this);
+           var fractDigits = toInteger(fractionDigits);
+           var data = [0, 0, 0, 0, 0, 0];
+           var sign = '';
+           var result = '0';
+           var e, z, j, k;

 
 

-       // `Array.prototype.includes` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.includes
-       _export({ target: 'Array', proto: true, forced: !USES_TO_LENGTH$c }, {
-         includes: function includes(el /* , fromIndex = 0 */) {
-           return $includes$1(this, el, arguments.length > 1 ? arguments[1] : undefined);
+           if (fractDigits < 0 || fractDigits > 20) throw RangeError('Incorrect fraction digits');
+           // eslint-disable-next-line no-self-compare -- NaN check
+           if (number != number) return 'NaN';
+           if (number <= -1e21 || number >= 1e21) return String(number);
+           if (number < 0) {
+             sign = '-';
+             number = -number;
+           }
+           if (number > 1e-21) {
+             e = log(number * pow(2, 69, 1)) - 69;
+             z = e < 0 ? number * pow(2, -e, 1) : number / pow(2, e, 1);
+             z *= 0x10000000000000;
+             e = 52 - e;
+             if (e > 0) {
+               multiply(data, 0, z);
+               j = fractDigits;
+               while (j >= 7) {
+                 multiply(data, 1e7, 0);
+                 j -= 7;
+               }
+               multiply(data, pow(10, j, 1), 0);
+               j = e - 1;
+               while (j >= 23) {
+                 divide(data, 1 << 23);
+                 j -= 23;
+               }
+               divide(data, 1 << j);
+               multiply(data, 1, 1);
+               divide(data, 2);
+               result = dataToString(data);
+             } else {
+               multiply(data, 0, z);
+               multiply(data, 1 << -e, 0);
+               result = dataToString(data) + repeat$2.call('0', fractDigits);
+             }
+           }
+           if (fractDigits > 0) {
+             k = result.length;
+             result = sign + (k <= fractDigits
+               ? '0.' + repeat$2.call('0', fractDigits - k) + result
+               : result.slice(0, k - fractDigits) + '.' + result.slice(k - fractDigits));
+           } else {
+             result = sign + result;
+           } return result;

          }
        });
 
          }
        });
 

-       // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('includes');
+       var global$1 = global$F;

 
 

-       var notARegexp = function (it) {
-         if (isRegexp(it)) {
-           throw TypeError("The method doesn't accept regular expressions");
-         } return it;
+       var globalIsFinite = global$1.isFinite;
+
+       // `Number.isFinite` method
+       // https://tc39.es/ecma262/#sec-number.isfinite
+       // eslint-disable-next-line es/no-number-isfinite -- safe
+       var numberIsFinite$1 = Number.isFinite || function isFinite(it) {
+         return typeof it == 'number' && globalIsFinite(it);

        };
 
        };
 

-       var MATCH$2 = wellKnownSymbol('match');
+       var $$i = _export;
+       var numberIsFinite = numberIsFinite$1;

 
 

-       var correctIsRegexpLogic = function (METHOD_NAME) {
-         var regexp = /./;
-         try {
-           '/./'[METHOD_NAME](regexp);
-         } catch (e) {
-           try {
-             regexp[MATCH$2] = false;
-             return '/./'[METHOD_NAME](regexp);
-           } catch (f) { /* empty */ }
-         } return false;
-       };
-
-       // `String.prototype.includes` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.includes
-       _export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('includes') }, {
-         includes: function includes(searchString /* , position = 0 */) {
-           return !!~String(requireObjectCoercible(this))
-             .indexOf(notARegexp(searchString), arguments.length > 1 ? arguments[1] : undefined);
-         }
-       });
+       // `Number.isFinite` method
+       // https://tc39.es/ecma262/#sec-number.isfinite
+       $$i({ target: 'Number', stat: true }, { isFinite: numberIsFinite });

 
 

-       var _detected;
+       var $$h = _export;
+       var toAbsoluteIndex = toAbsoluteIndex$8;

 
 

-       function utilDetect(refresh) {
-         if (_detected && !refresh) return _detected;
-         _detected = {};
-         var ua = navigator.userAgent;
-         var m = null;
-         /* Browser */
+       var fromCharCode = String.fromCharCode;
+       // eslint-disable-next-line es/no-string-fromcodepoint -- required for testing
+       var $fromCodePoint = String.fromCodePoint;

 
 

-         m = ua.match(/(edge)\/?\s*(\.?\d+(\.\d+)*)/i); // Edge
+       // length should be 1, old FF problem
+       var INCORRECT_LENGTH = !!$fromCodePoint && $fromCodePoint.length != 1;

 
 

-         if (m !== null) {
-           _detected.browser = m[1];
-           _detected.version = m[2];
+       // `String.fromCodePoint` method
+       // https://tc39.es/ecma262/#sec-string.fromcodepoint
+       $$h({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         fromCodePoint: function fromCodePoint(x) {
+           var elements = [];
+           var length = arguments.length;
+           var i = 0;
+           var code;
+           while (length > i) {
+             code = +arguments[i++];
+             if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError(code + ' is not a valid code point');
+             elements.push(code < 0x10000
+               ? fromCharCode(code)
+               : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00)
+             );
+           } return elements.join('');

          }
          }

+       });

 
 

-         if (!_detected.browser) {
-           m = ua.match(/Trident\/.*rv:([0-9]{1,}[\.0-9]{0,})/i); // IE11
+       var fixRegExpWellKnownSymbolLogic = fixRegexpWellKnownSymbolLogic;
+       var anObject = anObject$m;
+       var requireObjectCoercible$5 = requireObjectCoercible$e;
+       var sameValue = sameValue$1;
+       var regExpExec = regexpExecAbstract;

 
 

-           if (m !== null) {
-             _detected.browser = 'msie';
-             _detected.version = m[1];
-           }
-         }
+       // @@search logic
+       fixRegExpWellKnownSymbolLogic('search', function (SEARCH, nativeSearch, maybeCallNative) {
+         return [
+           // `String.prototype.search` method
+           // https://tc39.es/ecma262/#sec-string.prototype.search
+           function search(regexp) {
+             var O = requireObjectCoercible$5(this);
+             var searcher = regexp == undefined ? undefined : regexp[SEARCH];
+             return searcher !== undefined ? searcher.call(regexp, O) : new RegExp(regexp)[SEARCH](String(O));
+           },
+           // `RegExp.prototype[@@search]` method
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@search
+           function (string) {
+             var res = maybeCallNative(nativeSearch, this, string);
+             if (res.done) return res.value;

 
 

-         if (!_detected.browser) {
-           m = ua.match(/(opr)\/?\s*(\.?\d+(\.\d+)*)/i); // Opera 15+
+             var rx = anObject(this);
+             var S = String(string);

 
 

-           if (m !== null) {
-             _detected.browser = 'Opera';
-             _detected.version = m[2];
+             var previousLastIndex = rx.lastIndex;
+             if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;
+             var result = regExpExec(rx, S);
+             if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;
+             return result === null ? -1 : result.index;

            }
            }

-         }
+         ];
+       });

 
 

-         if (!_detected.browser) {
-           m = ua.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);
+       var rbush$2 = {exports: {}};

 
 

-           if (m !== null) {
-             _detected.browser = m[1];
-             _detected.version = m[2];
-             m = ua.match(/version\/([\.\d]+)/i);
-             if (m !== null) _detected.version = m[1];
-           }
-         }
+       var quickselect$2 = {exports: {}};

 
 

-         if (!_detected.browser) {
-           _detected.browser = navigator.appName;
-           _detected.version = navigator.appVersion;
-         } // keep major.minor version only..
+       (function (module, exports) {
+         (function (global, factory) {
+           module.exports = factory() ;
+         })(commonjsGlobal, function () {

 
 

+           function quickselect(arr, k, left, right, compare) {
+             quickselectStep(arr, k, left || 0, right || arr.length - 1, compare || defaultCompare);
+           }

 
 

-         _detected.version = _detected.version.split(/\W/).slice(0, 2).join('.'); // detect other browser capabilities
-         // Legacy Opera has incomplete svg style support. See #715
+           function quickselectStep(arr, k, left, right, compare) {
+             while (right > left) {
+               if (right - left > 600) {
+                 var n = right - left + 1;
+                 var m = k - left + 1;
+                 var z = Math.log(n);
+                 var s = 0.5 * Math.exp(2 * z / 3);
+                 var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+                 var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+                 var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+                 quickselectStep(arr, k, newLeft, newRight, compare);
+               }

 
 

-         _detected.opera = _detected.browser.toLowerCase() === 'opera' && parseFloat(_detected.version) < 15;
+               var t = arr[k];
+               var i = left;
+               var j = right;
+               swap(arr, left, k);
+               if (compare(arr[right], t) > 0) swap(arr, left, right);

 
 

-         if (_detected.browser.toLowerCase() === 'msie') {
-           _detected.ie = true;
-           _detected.browser = 'Internet Explorer';
-           _detected.support = parseFloat(_detected.version) >= 11;
-         } else {
-           _detected.ie = false;
-           _detected.support = true;
-         }
+               while (i < j) {
+                 swap(arr, i, j);
+                 i++;
+                 j--;

 
 

-         _detected.filedrop = window.FileReader && 'ondrop' in window;
-         _detected.download = !(_detected.ie || _detected.browser.toLowerCase() === 'edge');
-         _detected.cssfilters = !(_detected.ie || _detected.browser.toLowerCase() === 'edge');
-         /* Platform */
+                 while (compare(arr[i], t) < 0) {
+                   i++;
+                 }

 
 

-         if (/Win/.test(ua)) {
-           _detected.os = 'win';
-           _detected.platform = 'Windows';
-         } else if (/Mac/.test(ua)) {
-           _detected.os = 'mac';
-           _detected.platform = 'Macintosh';
-         } else if (/X11/.test(ua) || /Linux/.test(ua)) {
-           _detected.os = 'linux';
-           _detected.platform = 'Linux';
-         } else {
-           _detected.os = 'win';
-           _detected.platform = 'Unknown';
-         }
+                 while (compare(arr[j], t) > 0) {
+                   j--;
+                 }
+               }

 
 

-         _detected.isMobileWebKit = (/\b(iPad|iPhone|iPod)\b/.test(ua) || // HACK: iPadOS 13+ requests desktop sites by default by using a Mac user agent,
-         // so assume any "mac" with multitouch is actually iOS
-         navigator.platform === 'MacIntel' && 'maxTouchPoints' in navigator && navigator.maxTouchPoints > 1) && /WebKit/.test(ua) && !/Edge/.test(ua) && !window.MSStream;
-         /* Locale */
-         // An array of locales requested by the browser in priority order.
+               if (compare(arr[left], t) === 0) swap(arr, left, j);else {
+                 j++;
+                 swap(arr, j, right);
+               }
+               if (j <= k) left = j + 1;
+               if (k <= j) right = j - 1;
+             }
+           }

 
 

-         _detected.browserLocales = Array.from(new Set( // remove duplicates
-         [navigator.language].concat(navigator.languages || []).concat([// old property for backwards compatibility
-         navigator.userLanguage]) // remove any undefined values
-         .filter(Boolean)));
-         /* Host */
+           function swap(arr, i, j) {
+             var tmp = arr[i];
+             arr[i] = arr[j];
+             arr[j] = tmp;
+           }

 
 

-         var loc = window.top.location;
-         var origin = loc.origin;
+           function defaultCompare(a, b) {
+             return a < b ? -1 : a > b ? 1 : 0;
+           }

 
 

-         if (!origin) {
-           // for unpatched IE11
-           origin = loc.protocol + '//' + loc.hostname + (loc.port ? ':' + loc.port : '');
-         }
+           return quickselect;
+         });
+       })(quickselect$2);

 
 

-         _detected.host = origin + loc.pathname;
-         return _detected;
-       }
+       rbush$2.exports = rbush$1;

 
 

-       var getOwnPropertyNames$2 = objectGetOwnPropertyNames.f;
-       var getOwnPropertyDescriptor$3 = objectGetOwnPropertyDescriptor.f;
-       var defineProperty$a = objectDefineProperty.f;
-       var trim$2 = stringTrim.trim;
+       rbush$2.exports["default"] = rbush$1;

 
 

-       var NUMBER = 'Number';
-       var NativeNumber = global_1[NUMBER];
-       var NumberPrototype = NativeNumber.prototype;
+       var quickselect$1 = quickselect$2.exports;

 
 

-       // Opera ~12 has broken Object#toString
-       var BROKEN_CLASSOF = classofRaw(objectCreate(NumberPrototype)) == NUMBER;
+       function rbush$1(maxEntries, format) {
+         if (!(this instanceof rbush$1)) return new rbush$1(maxEntries, format); // max entries in a node is 9 by default; min node fill is 40% for best performance

 
 

-       // `ToNumber` abstract operation
-       // https://tc39.github.io/ecma262/#sec-tonumber
-       var toNumber = function (argument) {
-         var it = toPrimitive(argument, false);
-         var first, third, radix, maxCode, digits, length, index, code;
-         if (typeof it == 'string' && it.length > 2) {
-           it = trim$2(it);
-           first = it.charCodeAt(0);
-           if (first === 43 || first === 45) {
-             third = it.charCodeAt(2);
-             if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
-           } else if (first === 48) {
-             switch (it.charCodeAt(1)) {
-               case 66: case 98: radix = 2; maxCode = 49; break; // fast equal of /^0b[01]+$/i
-               case 79: case 111: radix = 8; maxCode = 55; break; // fast equal of /^0o[0-7]+$/i
-               default: return +it;
-             }
-             digits = it.slice(2);
-             length = digits.length;
-             for (index = 0; index < length; index++) {
-               code = digits.charCodeAt(index);
-               // parseInt parses a string to a first unavailable symbol
-               // but ToNumber should return NaN if a string contains unavailable symbols
-               if (code < 48 || code > maxCode) return NaN;
-             } return parseInt(digits, radix);
-           }
-         } return +it;
-       };
+         this._maxEntries = Math.max(4, maxEntries || 9);
+         this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));

 
 

-       // `Number` constructor
-       // https://tc39.github.io/ecma262/#sec-number-constructor
-       if (isForced_1(NUMBER, !NativeNumber(' 0o1') || !NativeNumber('0b1') || NativeNumber('+0x1'))) {
-         var NumberWrapper = function Number(value) {
-           var it = arguments.length < 1 ? 0 : value;
-           var dummy = this;
-           return dummy instanceof NumberWrapper
-             // check on 1..constructor(foo) case
-             && (BROKEN_CLASSOF ? fails(function () { NumberPrototype.valueOf.call(dummy); }) : classofRaw(dummy) != NUMBER)
-               ? inheritIfRequired(new NativeNumber(toNumber(it)), dummy, NumberWrapper) : toNumber(it);
-         };
-         for (var keys$3 = descriptors ? getOwnPropertyNames$2(NativeNumber) : (
-           // ES3:
-           'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
-           // ES2015 (in case, if modules with ES2015 Number statics required before):
-           'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
-           'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
-         ).split(','), j$2 = 0, key$1; keys$3.length > j$2; j$2++) {
-           if (has(NativeNumber, key$1 = keys$3[j$2]) && !has(NumberWrapper, key$1)) {
-             defineProperty$a(NumberWrapper, key$1, getOwnPropertyDescriptor$3(NativeNumber, key$1));
-           }
+         if (format) {
+           this._initFormat(format);

          }
          }

-         NumberWrapper.prototype = NumberPrototype;
-         NumberPrototype.constructor = NumberWrapper;
-         redefine(global_1, NUMBER, NumberWrapper);
+
+         this.clear();

        }
 
        }
 

-       // `Number.MAX_SAFE_INTEGER` constant
-       // https://tc39.github.io/ecma262/#sec-number.max_safe_integer
-       _export({ target: 'Number', stat: true }, {
-         MAX_SAFE_INTEGER: 0x1FFFFFFFFFFFFF
-       });
+       rbush$1.prototype = {
+         all: function all() {
+           return this._all(this.data, []);
+         },
+         search: function search(bbox) {
+           var node = this.data,
+               result = [],
+               toBBox = this.toBBox;
+           if (!intersects$1(bbox, node)) return result;
+           var nodesToSearch = [],
+               i,
+               len,
+               child,
+               childBBox;

 
 

-       var aesJs = createCommonjsModule(function (module, exports) {
-         /*! MIT License. Copyright 2015-2018 Richard Moore <me@ricmoo.com>. See LICENSE.txt. */
-         (function (root) {
+           while (node) {
+             for (i = 0, len = node.children.length; i < len; i++) {
+               child = node.children[i];
+               childBBox = node.leaf ? toBBox(child) : child;

 
 

-           function checkInt(value) {
-             return parseInt(value) === value;
+               if (intersects$1(bbox, childBBox)) {
+                 if (node.leaf) result.push(child);else if (contains$1(bbox, childBBox)) this._all(child, result);else nodesToSearch.push(child);
+               }
+             }
+
+             node = nodesToSearch.pop();

            }
 
            }
 

-           function checkInts(arrayish) {
-             if (!checkInt(arrayish.length)) {
-               return false;
-             }
+           return result;
+         },
+         collides: function collides(bbox) {
+           var node = this.data,
+               toBBox = this.toBBox;
+           if (!intersects$1(bbox, node)) return false;
+           var nodesToSearch = [],
+               i,
+               len,
+               child,
+               childBBox;

 
 

-             for (var i = 0; i < arrayish.length; i++) {
-               if (!checkInt(arrayish[i]) || arrayish[i] < 0 || arrayish[i] > 255) {
-                 return false;
+           while (node) {
+             for (i = 0, len = node.children.length; i < len; i++) {
+               child = node.children[i];
+               childBBox = node.leaf ? toBBox(child) : child;
+
+               if (intersects$1(bbox, childBBox)) {
+                 if (node.leaf || contains$1(bbox, childBBox)) return true;
+                 nodesToSearch.push(child);

                }
              }
 
                }
              }
 

-             return true;
+             node = nodesToSearch.pop();

            }
 
            }
 

-           function coerceArray(arg, copy) {
-             // ArrayBuffer view
-             if (arg.buffer && arg.name === 'Uint8Array') {
-               if (copy) {
-                 if (arg.slice) {
-                   arg = arg.slice();
-                 } else {
-                   arg = Array.prototype.slice.call(arg);
-                 }
-               }
+           return false;
+         },
+         load: function load(data) {
+           if (!(data && data.length)) return this;

 
 

-               return arg;
-             } // It's an array; check it is a valid representation of a byte
+           if (data.length < this._minEntries) {
+             for (var i = 0, len = data.length; i < len; i++) {
+               this.insert(data[i]);
+             }

 
 

+             return this;
+           } // recursively build the tree with the given data from scratch using OMT algorithm

 
 

-             if (Array.isArray(arg)) {
-               if (!checkInts(arg)) {
-                 throw new Error('Array contains invalid value: ' + arg);
-               }

 
 

-               return new Uint8Array(arg);
-             } // Something else, but behaves like an array (maybe a Buffer? Arguments?)
+           var node = this._build(data.slice(), 0, data.length - 1, 0);

 
 

+           if (!this.data.children.length) {
+             // save as is if tree is empty
+             this.data = node;
+           } else if (this.data.height === node.height) {
+             // split root if trees have the same height
+             this._splitRoot(this.data, node);
+           } else {
+             if (this.data.height < node.height) {
+               // swap trees if inserted one is bigger
+               var tmpNode = this.data;
+               this.data = node;
+               node = tmpNode;
+             } // insert the small tree into the large tree at appropriate level

 
 

-             if (checkInt(arg.length) && checkInts(arg)) {
-               return new Uint8Array(arg);
-             }

 
 

-             throw new Error('unsupported array-like object');
+             this._insert(node, this.data.height - node.height - 1, true);

            }
 
            }
 

-           function createArray(length) {
-             return new Uint8Array(length);
-           }
+           return this;
+         },
+         insert: function insert(item) {
+           if (item) this._insert(item, this.data.height - 1);
+           return this;
+         },
+         clear: function clear() {
+           this.data = createNode$1([]);
+           return this;
+         },
+         remove: function remove(item, equalsFn) {
+           if (!item) return this;
+           var node = this.data,
+               bbox = this.toBBox(item),
+               path = [],
+               indexes = [],
+               i,
+               parent,
+               index,
+               goingUp; // depth-first iterative tree traversal

 
 

-           function copyArray(sourceArray, targetArray, targetStart, sourceStart, sourceEnd) {
-             if (sourceStart != null || sourceEnd != null) {
-               if (sourceArray.slice) {
-                 sourceArray = sourceArray.slice(sourceStart, sourceEnd);
-               } else {
-                 sourceArray = Array.prototype.slice.call(sourceArray, sourceStart, sourceEnd);
-               }
+           while (node || path.length) {
+             if (!node) {
+               // go up
+               node = path.pop();
+               parent = path[path.length - 1];
+               i = indexes.pop();
+               goingUp = true;

              }
 
              }
 

-             targetArray.set(sourceArray, targetStart);
-           }
+             if (node.leaf) {
+               // check current node
+               index = findItem$1(item, node.children, equalsFn);

 
 

-           var convertUtf8 = function () {
-             function toBytes(text) {
-               var result = [],
-                   i = 0;
-               text = encodeURI(text);
+               if (index !== -1) {
+                 // item found, remove the item and condense tree upwards
+                 node.children.splice(index, 1);
+                 path.push(node);

 
 

-               while (i < text.length) {
-                 var c = text.charCodeAt(i++); // if it is a % sign, encode the following 2 bytes as a hex value
+                 this._condense(path);

 
 

-                 if (c === 37) {
-                   result.push(parseInt(text.substr(i, 2), 16));
-                   i += 2; // otherwise, just the actual byte
-                 } else {
-                   result.push(c);
-                 }
+                 return this;

                }
                }

-
-               return coerceArray(result);

              }
 
              }
 

-             function fromBytes(bytes) {
-               var result = [],
-                   i = 0;
+             if (!goingUp && !node.leaf && contains$1(node, bbox)) {
+               // go down
+               path.push(node);
+               indexes.push(i);
+               i = 0;
+               parent = node;
+               node = node.children[0];
+             } else if (parent) {
+               // go right
+               i++;
+               node = parent.children[i];
+               goingUp = false;
+             } else node = null; // nothing found

 
 

-               while (i < bytes.length) {
-                 var c = bytes[i];
+           }

 
 

-                 if (c < 128) {
-                   result.push(String.fromCharCode(c));
-                   i++;
-                 } else if (c > 191 && c < 224) {
-                   result.push(String.fromCharCode((c & 0x1f) << 6 | bytes[i + 1] & 0x3f));
-                   i += 2;
-                 } else {
-                   result.push(String.fromCharCode((c & 0x0f) << 12 | (bytes[i + 1] & 0x3f) << 6 | bytes[i + 2] & 0x3f));
-                   i += 3;
-                 }
-               }
+           return this;
+         },
+         toBBox: function toBBox(item) {
+           return item;
+         },
+         compareMinX: compareNodeMinX$1,
+         compareMinY: compareNodeMinY$1,
+         toJSON: function toJSON() {
+           return this.data;
+         },
+         fromJSON: function fromJSON(data) {
+           this.data = data;
+           return this;
+         },
+         _all: function _all(node, result) {
+           var nodesToSearch = [];

 
 

-               return result.join('');
-             }
+           while (node) {
+             if (node.leaf) result.push.apply(result, node.children);else nodesToSearch.push.apply(nodesToSearch, node.children);
+             node = nodesToSearch.pop();
+           }

 
 

-             return {
-               toBytes: toBytes,
-               fromBytes: fromBytes
-             };
-           }();
+           return result;
+         },
+         _build: function _build(items, left, right, height) {
+           var N = right - left + 1,
+               M = this._maxEntries,
+               node;

 
 

-           var convertHex = function () {
-             function toBytes(text) {
-               var result = [];
+           if (N <= M) {
+             // reached leaf level; return leaf
+             node = createNode$1(items.slice(left, right + 1));
+             calcBBox$1(node, this.toBBox);
+             return node;
+           }

 
 

-               for (var i = 0; i < text.length; i += 2) {
-                 result.push(parseInt(text.substr(i, 2), 16));
-               }
+           if (!height) {
+             // target height of the bulk-loaded tree
+             height = Math.ceil(Math.log(N) / Math.log(M)); // target number of root entries to maximize storage utilization

 
 

-               return result;
-             } // http://ixti.net/development/javascript/2011/11/11/base64-encodedecode-of-utf8-in-browser-with-js.html
+             M = Math.ceil(N / Math.pow(M, height - 1));
+           }

 
 

+           node = createNode$1([]);
+           node.leaf = false;
+           node.height = height; // split the items into M mostly square tiles

 
 

-             var Hex = '0123456789abcdef';
+           var N2 = Math.ceil(N / M),
+               N1 = N2 * Math.ceil(Math.sqrt(M)),
+               i,
+               j,
+               right2,
+               right3;
+           multiSelect$1(items, left, right, N1, this.compareMinX);

 
 

-             function fromBytes(bytes) {
-               var result = [];
+           for (i = left; i <= right; i += N1) {
+             right2 = Math.min(i + N1 - 1, right);
+             multiSelect$1(items, i, right2, N2, this.compareMinY);

 
 

-               for (var i = 0; i < bytes.length; i++) {
-                 var v = bytes[i];
-                 result.push(Hex[(v & 0xf0) >> 4] + Hex[v & 0x0f]);
-               }
+             for (j = i; j <= right2; j += N2) {
+               right3 = Math.min(j + N2 - 1, right2); // pack each entry recursively

 
 

-               return result.join('');
+               node.children.push(this._build(items, j, right3, height - 1));

              }
              }

+           }

 
 

-             return {
-               toBytes: toBytes,
-               fromBytes: fromBytes
-             };
-           }(); // Number of rounds by keysize
-
+           calcBBox$1(node, this.toBBox);
+           return node;
+         },
+         _chooseSubtree: function _chooseSubtree(bbox, node, level, path) {
+           var i, len, child, targetNode, area, enlargement, minArea, minEnlargement;

 
 

-           var numberOfRounds = {
-             16: 10,
-             24: 12,
-             32: 14
-           }; // Round constant words
-
-           var rcon = [0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91]; // S-box and Inverse S-box (S is for Substitution)
-
-           var S = [0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16];
-           var Si = [0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d]; // Transformations for encryption
+           while (true) {
+             path.push(node);
+             if (node.leaf || path.length - 1 === level) break;
+             minArea = minEnlargement = Infinity;

 
 

-           var T1 = [0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d, 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5, 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c, 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81, 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4, 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12, 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a];
-           var T2 = [0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 0x0dfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, 0x50603030, 0x03020101, 0xa9ce6767, 0x7d562b2b, 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, 0x15effafa, 0xebb25959, 0xc98e4747, 0x0bfbf0f0, 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, 0x5a6c3636, 0x417e3f3f, 0x02f5f7f7, 0x4f83cccc, 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x08f9f1f1, 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, 0x0c080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 0x28301818, 0xa1379696, 0x0f0a0505, 0xb52f9a9a, 0x090e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, 0xf5a65353, 0x68b9d1d1, 0x00000000, 0x2cc1eded, 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, 0xcf8a4545, 0x10e9f9f9, 0x06040202, 0x81fe7f7f, 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, 0xad3f9292, 0xbc219d9d, 0x48703838, 0x04f1f5f5, 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 0x30201010, 0x1ae5ffff, 0x0efdf3f3, 0x6dbfd2d2, 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, 0xdb924949, 0x0a0c0606, 0x6c482424, 0xe4b85c5c, 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 0xb4d86c6c, 0xfaac5656, 0x07f3f4f4, 0x25cfeaea, 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, 0xd8904848, 0x05060303, 0x01f7f6f6, 0x121c0e0e, 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616];
-           var T3 = [0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, 0x30506030, 0x01030201, 0x67a9ce67, 0x2b7d562b, 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, 0x040c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 0x18283018, 0x96a13796, 0x050f0a05, 0x9ab52f9a, 0x07090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 0x091b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, 0x53f5a653, 0xd168b9d1, 0x00000000, 0xed2cc1ed, 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, 0x45cf8a45, 0xf910e9f9, 0x02060402, 0x7f81fe7f, 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, 0xcd4c81cd, 0x0c14180c, 0x13352613, 0xec2fc3ec, 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, 0xde79a7de, 0x5ee2bc5e, 0x0b1d160b, 0xdb76addb, 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0x0a1e140a, 0x49db9249, 0x060a0c06, 0x246c4824, 0x5ce4b85c, 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x08181008, 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, 0x48d89048, 0x03050603, 0xf601f7f6, 0x0e121c0e, 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, 0x8c8f038c, 0xa1f859a1, 0x89800989, 0x0d171a0d, 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, 0x41c38241, 0x99b02999, 0x2d775a2d, 0x0f111e0f, 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16];
-           var T4 = [0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, 0x30305060, 0x01010302, 0x6767a9ce, 0x2b2b7d56, 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, 0x04040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 0x18182830, 0x9696a137, 0x05050f0a, 0x9a9ab52f, 0x0707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 0x09091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, 0x5353f5a6, 0xd1d168b9, 0x00000000, 0xeded2cc1, 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, 0x4545cf8a, 0xf9f910e9, 0x02020604, 0x7f7f81fe, 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, 0xcdcd4c81, 0x0c0c1418, 0x13133526, 0xecec2fc3, 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, 0xdede79a7, 0x5e5ee2bc, 0x0b0b1d16, 0xdbdb76ad, 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0x0a0a1e14, 0x4949db92, 0x06060a0c, 0x24246c48, 0x5c5ce4b8, 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x08081810, 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, 0x4848d890, 0x03030506, 0xf6f601f7, 0x0e0e121c, 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0x0d0d171a, 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, 0x4141c382, 0x9999b029, 0x2d2d775a, 0x0f0f111e, 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c]; // Transformations for decryption
+             for (i = 0, len = node.children.length; i < len; i++) {
+               child = node.children[i];
+               area = bboxArea$1(child);
+               enlargement = enlargedArea$1(bbox, child) - area; // choose entry with the least area enlargement

 
 

-           var T5 = [0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a, 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb, 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927, 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190, 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742];
-           var T6 = [0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, 0x02c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, 0x07b2eb28, 0x032fb5c2, 0x9a86c57b, 0xa5d33708, 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 0x390b83ec, 0xaa4060ef, 0x065e719f, 0x51bd6e10, 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, 0xb591548d, 0x0571c45d, 0x6f0406d4, 0xff605015, 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x00000000, 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 0xb10c0a67, 0x0f9357e7, 0xd2b4ee96, 0x9e1b9b91, 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, 0x0ae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 0x0b0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, 0xe42c3a9d, 0x0d507892, 0x9b6a5fcc, 0x62547e46, 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 0x09cd2678, 0xf46e5918, 0x01ec9ab7, 0xa8834f9a, 0x65e6956e, 0x7eaaffe6, 0x0821bccf, 0xe6ef15e8, 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, 0x4af10498, 0xf741ecda, 0x0e7fcd50, 0x2f1791f6, 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, 0x049d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 0x72161dc3, 0x0cbce225, 0x8b283c49, 0x41ff0d95, 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857];
-           var T7 = [0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x03934be3, 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 0x5a49deb1, 0x1b6725ba, 0x0e9845ea, 0xc0e15dfe, 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 0xd323ab73, 0x02e2724b, 0x8f57e31f, 0xab2a6655, 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x08a5d337, 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, 0x8af93e21, 0x063d96dd, 0x05aedd3e, 0xbd464de6, 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, 0x0a47a17c, 0x0fe97c42, 0x1ec9f884, 0x00000000, 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 0x0d0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, 0x198557f1, 0x074caf75, 0xddbbee99, 0x60fda37f, 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0x0b3698d4, 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, 0x9bd9bae7, 0x36ce4a6f, 0x09d4ea9f, 0x7cd629b0, 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x04dfe496, 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, 0x618c9ad7, 0x0c7a37a1, 0x148e59f8, 0x3c89eb13, 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, 0x017139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8];
-           var T8 = [0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, 0x30fa5520, 0x766df6ad, 0xcc769188, 0x024c25f5, 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x082b94f9, 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, 0x2887f230, 0xbfa5b223, 0x036aba02, 0x16825ced, 0xcf1c2b8a, 0x79b492a7, 0x07f2f0f3, 0x69e2a14e, 0xdaf4cd65, 0x05bed506, 0x34621fd1, 0xa6fe8ac4, 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, 0x548db591, 0xc45d0571, 0x06d46f04, 0x5015ff60, 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x00000000, 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, 0x0efffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, 0x0fd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 0x0a67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 0x090d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, 0x01269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, 0x04984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, 0x5eea049d, 0x8c355d01, 0x877473fa, 0x0b412efb, 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0x0d9541ff, 0xa8017139, 0x0cb3de08, 0xb4e49cd8, 0x56c19064, 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0]; // Transformations for decryption key expansion
+               if (enlargement < minEnlargement) {
+                 minEnlargement = enlargement;
+                 minArea = area < minArea ? area : minArea;
+                 targetNode = child;
+               } else if (enlargement === minEnlargement) {
+                 // otherwise choose one with the smallest area
+                 if (area < minArea) {
+                   minArea = area;
+                   targetNode = child;
+                 }
+               }
+             }

 
 

-           var U1 = [0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3];
-           var U2 = [0x00000000, 0x0b0e090d, 0x161c121a, 0x1d121b17, 0x2c382434, 0x27362d39, 0x3a24362e, 0x312a3f23, 0x58704868, 0x537e4165, 0x4e6c5a72, 0x4562537f, 0x74486c5c, 0x7f466551, 0x62547e46, 0x695a774b, 0xb0e090d0, 0xbbee99dd, 0xa6fc82ca, 0xadf28bc7, 0x9cd8b4e4, 0x97d6bde9, 0x8ac4a6fe, 0x81caaff3, 0xe890d8b8, 0xe39ed1b5, 0xfe8ccaa2, 0xf582c3af, 0xc4a8fc8c, 0xcfa6f581, 0xd2b4ee96, 0xd9bae79b, 0x7bdb3bbb, 0x70d532b6, 0x6dc729a1, 0x66c920ac, 0x57e31f8f, 0x5ced1682, 0x41ff0d95, 0x4af10498, 0x23ab73d3, 0x28a57ade, 0x35b761c9, 0x3eb968c4, 0x0f9357e7, 0x049d5eea, 0x198f45fd, 0x12814cf0, 0xcb3bab6b, 0xc035a266, 0xdd27b971, 0xd629b07c, 0xe7038f5f, 0xec0d8652, 0xf11f9d45, 0xfa119448, 0x934be303, 0x9845ea0e, 0x8557f119, 0x8e59f814, 0xbf73c737, 0xb47dce3a, 0xa96fd52d, 0xa261dc20, 0xf6ad766d, 0xfda37f60, 0xe0b16477, 0xebbf6d7a, 0xda955259, 0xd19b5b54, 0xcc894043, 0xc787494e, 0xaedd3e05, 0xa5d33708, 0xb8c12c1f, 0xb3cf2512, 0x82e51a31, 0x89eb133c, 0x94f9082b, 0x9ff70126, 0x464de6bd, 0x4d43efb0, 0x5051f4a7, 0x5b5ffdaa, 0x6a75c289, 0x617bcb84, 0x7c69d093, 0x7767d99e, 0x1e3daed5, 0x1533a7d8, 0x0821bccf, 0x032fb5c2, 0x32058ae1, 0x390b83ec, 0x241998fb, 0x2f1791f6, 0x8d764dd6, 0x867844db, 0x9b6a5fcc, 0x906456c1, 0xa14e69e2, 0xaa4060ef, 0xb7527bf8, 0xbc5c72f5, 0xd50605be, 0xde080cb3, 0xc31a17a4, 0xc8141ea9, 0xf93e218a, 0xf2302887, 0xef223390, 0xe42c3a9d, 0x3d96dd06, 0x3698d40b, 0x2b8acf1c, 0x2084c611, 0x11aef932, 0x1aa0f03f, 0x07b2eb28, 0x0cbce225, 0x65e6956e, 0x6ee89c63, 0x73fa8774, 0x78f48e79, 0x49deb15a, 0x42d0b857, 0x5fc2a340, 0x54ccaa4d, 0xf741ecda, 0xfc4fe5d7, 0xe15dfec0, 0xea53f7cd, 0xdb79c8ee, 0xd077c1e3, 0xcd65daf4, 0xc66bd3f9, 0xaf31a4b2, 0xa43fadbf, 0xb92db6a8, 0xb223bfa5, 0x83098086, 0x8807898b, 0x9515929c, 0x9e1b9b91, 0x47a17c0a, 0x4caf7507, 0x51bd6e10, 0x5ab3671d, 0x6b99583e, 0x60975133, 0x7d854a24, 0x768b4329, 0x1fd13462, 0x14df3d6f, 0x09cd2678, 0x02c32f75, 0x33e91056, 0x38e7195b, 0x25f5024c, 0x2efb0b41, 0x8c9ad761, 0x8794de6c, 0x9a86c57b, 0x9188cc76, 0xa0a2f355, 0xabacfa58, 0xb6bee14f, 0xbdb0e842, 0xd4ea9f09, 0xdfe49604, 0xc2f68d13, 0xc9f8841e, 0xf8d2bb3d, 0xf3dcb230, 0xeecea927, 0xe5c0a02a, 0x3c7a47b1, 0x37744ebc, 0x2a6655ab, 0x21685ca6, 0x10426385, 0x1b4c6a88, 0x065e719f, 0x0d507892, 0x640a0fd9, 0x6f0406d4, 0x72161dc3, 0x791814ce, 0x48322bed, 0x433c22e0, 0x5e2e39f7, 0x552030fa, 0x01ec9ab7, 0x0ae293ba, 0x17f088ad, 0x1cfe81a0, 0x2dd4be83, 0x26dab78e, 0x3bc8ac99, 0x30c6a594, 0x599cd2df, 0x5292dbd2, 0x4f80c0c5, 0x448ec9c8, 0x75a4f6eb, 0x7eaaffe6, 0x63b8e4f1, 0x68b6edfc, 0xb10c0a67, 0xba02036a, 0xa710187d, 0xac1e1170, 0x9d342e53, 0x963a275e, 0x8b283c49, 0x80263544, 0xe97c420f, 0xe2724b02, 0xff605015, 0xf46e5918, 0xc544663b, 0xce4a6f36, 0xd3587421, 0xd8567d2c, 0x7a37a10c, 0x7139a801, 0x6c2bb316, 0x6725ba1b, 0x560f8538, 0x5d018c35, 0x40139722, 0x4b1d9e2f, 0x2247e964, 0x2949e069, 0x345bfb7e, 0x3f55f273, 0x0e7fcd50, 0x0571c45d, 0x1863df4a, 0x136dd647, 0xcad731dc, 0xc1d938d1, 0xdccb23c6, 0xd7c52acb, 0xe6ef15e8, 0xede11ce5, 0xf0f307f2, 0xfbfd0eff, 0x92a779b4, 0x99a970b9, 0x84bb6bae, 0x8fb562a3, 0xbe9f5d80, 0xb591548d, 0xa8834f9a, 0xa38d4697];
-           var U3 = [0x00000000, 0x0d0b0e09, 0x1a161c12, 0x171d121b, 0x342c3824, 0x3927362d, 0x2e3a2436, 0x23312a3f, 0x68587048, 0x65537e41, 0x724e6c5a, 0x7f456253, 0x5c74486c, 0x517f4665, 0x4662547e, 0x4b695a77, 0xd0b0e090, 0xddbbee99, 0xcaa6fc82, 0xc7adf28b, 0xe49cd8b4, 0xe997d6bd, 0xfe8ac4a6, 0xf381caaf, 0xb8e890d8, 0xb5e39ed1, 0xa2fe8cca, 0xaff582c3, 0x8cc4a8fc, 0x81cfa6f5, 0x96d2b4ee, 0x9bd9bae7, 0xbb7bdb3b, 0xb670d532, 0xa16dc729, 0xac66c920, 0x8f57e31f, 0x825ced16, 0x9541ff0d, 0x984af104, 0xd323ab73, 0xde28a57a, 0xc935b761, 0xc43eb968, 0xe70f9357, 0xea049d5e, 0xfd198f45, 0xf012814c, 0x6bcb3bab, 0x66c035a2, 0x71dd27b9, 0x7cd629b0, 0x5fe7038f, 0x52ec0d86, 0x45f11f9d, 0x48fa1194, 0x03934be3, 0x0e9845ea, 0x198557f1, 0x148e59f8, 0x37bf73c7, 0x3ab47dce, 0x2da96fd5, 0x20a261dc, 0x6df6ad76, 0x60fda37f, 0x77e0b164, 0x7aebbf6d, 0x59da9552, 0x54d19b5b, 0x43cc8940, 0x4ec78749, 0x05aedd3e, 0x08a5d337, 0x1fb8c12c, 0x12b3cf25, 0x3182e51a, 0x3c89eb13, 0x2b94f908, 0x269ff701, 0xbd464de6, 0xb04d43ef, 0xa75051f4, 0xaa5b5ffd, 0x896a75c2, 0x84617bcb, 0x937c69d0, 0x9e7767d9, 0xd51e3dae, 0xd81533a7, 0xcf0821bc, 0xc2032fb5, 0xe132058a, 0xec390b83, 0xfb241998, 0xf62f1791, 0xd68d764d, 0xdb867844, 0xcc9b6a5f, 0xc1906456, 0xe2a14e69, 0xefaa4060, 0xf8b7527b, 0xf5bc5c72, 0xbed50605, 0xb3de080c, 0xa4c31a17, 0xa9c8141e, 0x8af93e21, 0x87f23028, 0x90ef2233, 0x9de42c3a, 0x063d96dd, 0x0b3698d4, 0x1c2b8acf, 0x112084c6, 0x3211aef9, 0x3f1aa0f0, 0x2807b2eb, 0x250cbce2, 0x6e65e695, 0x636ee89c, 0x7473fa87, 0x7978f48e, 0x5a49deb1, 0x5742d0b8, 0x405fc2a3, 0x4d54ccaa, 0xdaf741ec, 0xd7fc4fe5, 0xc0e15dfe, 0xcdea53f7, 0xeedb79c8, 0xe3d077c1, 0xf4cd65da, 0xf9c66bd3, 0xb2af31a4, 0xbfa43fad, 0xa8b92db6, 0xa5b223bf, 0x86830980, 0x8b880789, 0x9c951592, 0x919e1b9b, 0x0a47a17c, 0x074caf75, 0x1051bd6e, 0x1d5ab367, 0x3e6b9958, 0x33609751, 0x247d854a, 0x29768b43, 0x621fd134, 0x6f14df3d, 0x7809cd26, 0x7502c32f, 0x5633e910, 0x5b38e719, 0x4c25f502, 0x412efb0b, 0x618c9ad7, 0x6c8794de, 0x7b9a86c5, 0x769188cc, 0x55a0a2f3, 0x58abacfa, 0x4fb6bee1, 0x42bdb0e8, 0x09d4ea9f, 0x04dfe496, 0x13c2f68d, 0x1ec9f884, 0x3df8d2bb, 0x30f3dcb2, 0x27eecea9, 0x2ae5c0a0, 0xb13c7a47, 0xbc37744e, 0xab2a6655, 0xa621685c, 0x85104263, 0x881b4c6a, 0x9f065e71, 0x920d5078, 0xd9640a0f, 0xd46f0406, 0xc372161d, 0xce791814, 0xed48322b, 0xe0433c22, 0xf75e2e39, 0xfa552030, 0xb701ec9a, 0xba0ae293, 0xad17f088, 0xa01cfe81, 0x832dd4be, 0x8e26dab7, 0x993bc8ac, 0x9430c6a5, 0xdf599cd2, 0xd25292db, 0xc54f80c0, 0xc8448ec9, 0xeb75a4f6, 0xe67eaaff, 0xf163b8e4, 0xfc68b6ed, 0x67b10c0a, 0x6aba0203, 0x7da71018, 0x70ac1e11, 0x539d342e, 0x5e963a27, 0x498b283c, 0x44802635, 0x0fe97c42, 0x02e2724b, 0x15ff6050, 0x18f46e59, 0x3bc54466, 0x36ce4a6f, 0x21d35874, 0x2cd8567d, 0x0c7a37a1, 0x017139a8, 0x166c2bb3, 0x1b6725ba, 0x38560f85, 0x355d018c, 0x22401397, 0x2f4b1d9e, 0x642247e9, 0x692949e0, 0x7e345bfb, 0x733f55f2, 0x500e7fcd, 0x5d0571c4, 0x4a1863df, 0x47136dd6, 0xdccad731, 0xd1c1d938, 0xc6dccb23, 0xcbd7c52a, 0xe8e6ef15, 0xe5ede11c, 0xf2f0f307, 0xfffbfd0e, 0xb492a779, 0xb999a970, 0xae84bb6b, 0xa38fb562, 0x80be9f5d, 0x8db59154, 0x9aa8834f, 0x97a38d46];
-           var U4 = [0x00000000, 0x090d0b0e, 0x121a161c, 0x1b171d12, 0x24342c38, 0x2d392736, 0x362e3a24, 0x3f23312a, 0x48685870, 0x4165537e, 0x5a724e6c, 0x537f4562, 0x6c5c7448, 0x65517f46, 0x7e466254, 0x774b695a, 0x90d0b0e0, 0x99ddbbee, 0x82caa6fc, 0x8bc7adf2, 0xb4e49cd8, 0xbde997d6, 0xa6fe8ac4, 0xaff381ca, 0xd8b8e890, 0xd1b5e39e, 0xcaa2fe8c, 0xc3aff582, 0xfc8cc4a8, 0xf581cfa6, 0xee96d2b4, 0xe79bd9ba, 0x3bbb7bdb, 0x32b670d5, 0x29a16dc7, 0x20ac66c9, 0x1f8f57e3, 0x16825ced, 0x0d9541ff, 0x04984af1, 0x73d323ab, 0x7ade28a5, 0x61c935b7, 0x68c43eb9, 0x57e70f93, 0x5eea049d, 0x45fd198f, 0x4cf01281, 0xab6bcb3b, 0xa266c035, 0xb971dd27, 0xb07cd629, 0x8f5fe703, 0x8652ec0d, 0x9d45f11f, 0x9448fa11, 0xe303934b, 0xea0e9845, 0xf1198557, 0xf8148e59, 0xc737bf73, 0xce3ab47d, 0xd52da96f, 0xdc20a261, 0x766df6ad, 0x7f60fda3, 0x6477e0b1, 0x6d7aebbf, 0x5259da95, 0x5b54d19b, 0x4043cc89, 0x494ec787, 0x3e05aedd, 0x3708a5d3, 0x2c1fb8c1, 0x2512b3cf, 0x1a3182e5, 0x133c89eb, 0x082b94f9, 0x01269ff7, 0xe6bd464d, 0xefb04d43, 0xf4a75051, 0xfdaa5b5f, 0xc2896a75, 0xcb84617b, 0xd0937c69, 0xd99e7767, 0xaed51e3d, 0xa7d81533, 0xbccf0821, 0xb5c2032f, 0x8ae13205, 0x83ec390b, 0x98fb2419, 0x91f62f17, 0x4dd68d76, 0x44db8678, 0x5fcc9b6a, 0x56c19064, 0x69e2a14e, 0x60efaa40, 0x7bf8b752, 0x72f5bc5c, 0x05bed506, 0x0cb3de08, 0x17a4c31a, 0x1ea9c814, 0x218af93e, 0x2887f230, 0x3390ef22, 0x3a9de42c, 0xdd063d96, 0xd40b3698, 0xcf1c2b8a, 0xc6112084, 0xf93211ae, 0xf03f1aa0, 0xeb2807b2, 0xe2250cbc, 0x956e65e6, 0x9c636ee8, 0x877473fa, 0x8e7978f4, 0xb15a49de, 0xb85742d0, 0xa3405fc2, 0xaa4d54cc, 0xecdaf741, 0xe5d7fc4f, 0xfec0e15d, 0xf7cdea53, 0xc8eedb79, 0xc1e3d077, 0xdaf4cd65, 0xd3f9c66b, 0xa4b2af31, 0xadbfa43f, 0xb6a8b92d, 0xbfa5b223, 0x80868309, 0x898b8807, 0x929c9515, 0x9b919e1b, 0x7c0a47a1, 0x75074caf, 0x6e1051bd, 0x671d5ab3, 0x583e6b99, 0x51336097, 0x4a247d85, 0x4329768b, 0x34621fd1, 0x3d6f14df, 0x267809cd, 0x2f7502c3, 0x105633e9, 0x195b38e7, 0x024c25f5, 0x0b412efb, 0xd7618c9a, 0xde6c8794, 0xc57b9a86, 0xcc769188, 0xf355a0a2, 0xfa58abac, 0xe14fb6be, 0xe842bdb0, 0x9f09d4ea, 0x9604dfe4, 0x8d13c2f6, 0x841ec9f8, 0xbb3df8d2, 0xb230f3dc, 0xa927eece, 0xa02ae5c0, 0x47b13c7a, 0x4ebc3774, 0x55ab2a66, 0x5ca62168, 0x63851042, 0x6a881b4c, 0x719f065e, 0x78920d50, 0x0fd9640a, 0x06d46f04, 0x1dc37216, 0x14ce7918, 0x2bed4832, 0x22e0433c, 0x39f75e2e, 0x30fa5520, 0x9ab701ec, 0x93ba0ae2, 0x88ad17f0, 0x81a01cfe, 0xbe832dd4, 0xb78e26da, 0xac993bc8, 0xa59430c6, 0xd2df599c, 0xdbd25292, 0xc0c54f80, 0xc9c8448e, 0xf6eb75a4, 0xffe67eaa, 0xe4f163b8, 0xedfc68b6, 0x0a67b10c, 0x036aba02, 0x187da710, 0x1170ac1e, 0x2e539d34, 0x275e963a, 0x3c498b28, 0x35448026, 0x420fe97c, 0x4b02e272, 0x5015ff60, 0x5918f46e, 0x663bc544, 0x6f36ce4a, 0x7421d358, 0x7d2cd856, 0xa10c7a37, 0xa8017139, 0xb3166c2b, 0xba1b6725, 0x8538560f, 0x8c355d01, 0x97224013, 0x9e2f4b1d, 0xe9642247, 0xe0692949, 0xfb7e345b, 0xf2733f55, 0xcd500e7f, 0xc45d0571, 0xdf4a1863, 0xd647136d, 0x31dccad7, 0x38d1c1d9, 0x23c6dccb, 0x2acbd7c5, 0x15e8e6ef, 0x1ce5ede1, 0x07f2f0f3, 0x0efffbfd, 0x79b492a7, 0x70b999a9, 0x6bae84bb, 0x62a38fb5, 0x5d80be9f, 0x548db591, 0x4f9aa883, 0x4697a38d];
+             node = targetNode || node.children[0];
+           }

 
 

-           function convertToInt32(bytes) {
-             var result = [];
+           return node;
+         },
+         _insert: function _insert(item, level, isNode) {
+           var toBBox = this.toBBox,
+               bbox = isNode ? item : toBBox(item),
+               insertPath = []; // find the best node for accommodating the item, saving all nodes along the path too

 
 

-             for (var i = 0; i < bytes.length; i += 4) {
-               result.push(bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]);
-             }
+           var node = this._chooseSubtree(bbox, this.data, level, insertPath); // put the item into the node

 
 

-             return result;
-           }

 
 

-           var AES = function AES(key) {
-             if (!(this instanceof AES)) {
-               throw Error('AES must be instanitated with `new`');
-             }
+           node.children.push(item);
+           extend$2(node, bbox); // split on node overflow; propagate upwards if necessary

 
 

-             Object.defineProperty(this, 'key', {
-               value: coerceArray(key, true)
-             });
+           while (level >= 0) {
+             if (insertPath[level].children.length > this._maxEntries) {
+               this._split(insertPath, level);

 
 

-             this._prepare();
-           };
+               level--;
+             } else break;
+           } // adjust bboxes along the insertion path

 
 

-           AES.prototype._prepare = function () {
-             var rounds = numberOfRounds[this.key.length];

 
 

-             if (rounds == null) {
-               throw new Error('invalid key size (must be 16, 24 or 32 bytes)');
-             } // encryption round keys
+           this._adjustParentBBoxes(bbox, insertPath, level);
+         },
+         // split overflowed node into two
+         _split: function _split(insertPath, level) {
+           var node = insertPath[level],
+               M = node.children.length,
+               m = this._minEntries;

 
 

+           this._chooseSplitAxis(node, m, M);

 
 

-             this._Ke = []; // decryption round keys
+           var splitIndex = this._chooseSplitIndex(node, m, M);

 
 

-             this._Kd = [];
+           var newNode = createNode$1(node.children.splice(splitIndex, node.children.length - splitIndex));
+           newNode.height = node.height;
+           newNode.leaf = node.leaf;
+           calcBBox$1(node, this.toBBox);
+           calcBBox$1(newNode, this.toBBox);
+           if (level) insertPath[level - 1].children.push(newNode);else this._splitRoot(node, newNode);
+         },
+         _splitRoot: function _splitRoot(node, newNode) {
+           // split root node
+           this.data = createNode$1([node, newNode]);
+           this.data.height = node.height + 1;
+           this.data.leaf = false;
+           calcBBox$1(this.data, this.toBBox);
+         },
+         _chooseSplitIndex: function _chooseSplitIndex(node, m, M) {
+           var i, bbox1, bbox2, overlap, area, minOverlap, minArea, index;
+           minOverlap = minArea = Infinity;

 
 

-             for (var i = 0; i <= rounds; i++) {
-               this._Ke.push([0, 0, 0, 0]);
+           for (i = m; i <= M - m; i++) {
+             bbox1 = distBBox$1(node, 0, i, this.toBBox);
+             bbox2 = distBBox$1(node, i, M, this.toBBox);
+             overlap = intersectionArea$1(bbox1, bbox2);
+             area = bboxArea$1(bbox1) + bboxArea$1(bbox2); // choose distribution with minimum overlap

 
 

-               this._Kd.push([0, 0, 0, 0]);
+             if (overlap < minOverlap) {
+               minOverlap = overlap;
+               index = i;
+               minArea = area < minArea ? area : minArea;
+             } else if (overlap === minOverlap) {
+               // otherwise choose distribution with minimum area
+               if (area < minArea) {
+                 minArea = area;
+                 index = i;
+               }

              }
              }

+           }

 
 

-             var roundKeyCount = (rounds + 1) * 4;
-             var KC = this.key.length / 4; // convert the key into ints
+           return index;
+         },
+         // sorts node children by the best axis for split
+         _chooseSplitAxis: function _chooseSplitAxis(node, m, M) {
+           var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX$1,
+               compareMinY = node.leaf ? this.compareMinY : compareNodeMinY$1,
+               xMargin = this._allDistMargin(node, m, M, compareMinX),
+               yMargin = this._allDistMargin(node, m, M, compareMinY); // if total distributions margin value is minimal for x, sort by minX,
+           // otherwise it's already sorted by minY

 
 

-             var tk = convertToInt32(this.key); // copy values into round key arrays

 
 

-             var index;
+           if (xMargin < yMargin) node.children.sort(compareMinX);
+         },
+         // total margin of all possible split distributions where each node is at least m full
+         _allDistMargin: function _allDistMargin(node, m, M, compare) {
+           node.children.sort(compare);
+           var toBBox = this.toBBox,
+               leftBBox = distBBox$1(node, 0, m, toBBox),
+               rightBBox = distBBox$1(node, M - m, M, toBBox),
+               margin = bboxMargin$1(leftBBox) + bboxMargin$1(rightBBox),
+               i,
+               child;

 
 

-             for (var i = 0; i < KC; i++) {
-               index = i >> 2;
-               this._Ke[index][i % 4] = tk[i];
-               this._Kd[rounds - index][i % 4] = tk[i];
-             } // key expansion (fips-197 section 5.2)
+           for (i = m; i < M - m; i++) {
+             child = node.children[i];
+             extend$2(leftBBox, node.leaf ? toBBox(child) : child);
+             margin += bboxMargin$1(leftBBox);
+           }

 
 

+           for (i = M - m - 1; i >= m; i--) {
+             child = node.children[i];
+             extend$2(rightBBox, node.leaf ? toBBox(child) : child);
+             margin += bboxMargin$1(rightBBox);
+           }

 
 

-             var rconpointer = 0;
-             var t = KC,
-                 tt;
+           return margin;
+         },
+         _adjustParentBBoxes: function _adjustParentBBoxes(bbox, path, level) {
+           // adjust bboxes along the given tree path
+           for (var i = level; i >= 0; i--) {
+             extend$2(path[i], bbox);
+           }
+         },
+         _condense: function _condense(path) {
+           // go through the path, removing empty nodes and updating bboxes
+           for (var i = path.length - 1, siblings; i >= 0; i--) {
+             if (path[i].children.length === 0) {
+               if (i > 0) {
+                 siblings = path[i - 1].children;
+                 siblings.splice(siblings.indexOf(path[i]), 1);
+               } else this.clear();
+             } else calcBBox$1(path[i], this.toBBox);
+           }
+         },
+         _initFormat: function _initFormat(format) {
+           // data format (minX, minY, maxX, maxY accessors)
+           // uses eval-type function compilation instead of just accepting a toBBox function
+           // because the algorithms are very sensitive to sorting functions performance,
+           // so they should be dead simple and without inner calls
+           var compareArr = ['return a', ' - b', ';'];
+           this.compareMinX = new Function('a', 'b', compareArr.join(format[0]));
+           this.compareMinY = new Function('a', 'b', compareArr.join(format[1]));
+           this.toBBox = new Function('a', 'return {minX: a' + format[0] + ', minY: a' + format[1] + ', maxX: a' + format[2] + ', maxY: a' + format[3] + '};');
+         }
+       };

 
 

-             while (t < roundKeyCount) {
-               tt = tk[KC - 1];
-               tk[0] ^= S[tt >> 16 & 0xFF] << 24 ^ S[tt >> 8 & 0xFF] << 16 ^ S[tt & 0xFF] << 8 ^ S[tt >> 24 & 0xFF] ^ rcon[rconpointer] << 24;
-               rconpointer += 1; // key expansion (for non-256 bit)
+       function findItem$1(item, items, equalsFn) {
+         if (!equalsFn) return items.indexOf(item);

 
 

-               if (KC != 8) {
-                 for (var i = 1; i < KC; i++) {
-                   tk[i] ^= tk[i - 1];
-                 } // key expansion for 256-bit keys is "slightly different" (fips-197)
+         for (var i = 0; i < items.length; i++) {
+           if (equalsFn(item, items[i])) return i;
+         }

 
 

-               } else {
-                 for (var i = 1; i < KC / 2; i++) {
-                   tk[i] ^= tk[i - 1];
-                 }
+         return -1;
+       } // calculate node's bbox from bboxes of its children

 
 

-                 tt = tk[KC / 2 - 1];
-                 tk[KC / 2] ^= S[tt & 0xFF] ^ S[tt >> 8 & 0xFF] << 8 ^ S[tt >> 16 & 0xFF] << 16 ^ S[tt >> 24 & 0xFF] << 24;

 
 

-                 for (var i = KC / 2 + 1; i < KC; i++) {
-                   tk[i] ^= tk[i - 1];
-                 }
-               } // copy values into round key arrays
+       function calcBBox$1(node, toBBox) {
+         distBBox$1(node, 0, node.children.length, toBBox, node);
+       } // min bounding rectangle of node children from k to p-1

 
 
 
 

-               var i = 0,
-                   r,
-                   c;
+       function distBBox$1(node, k, p, toBBox, destNode) {
+         if (!destNode) destNode = createNode$1(null);
+         destNode.minX = Infinity;
+         destNode.minY = Infinity;
+         destNode.maxX = -Infinity;
+         destNode.maxY = -Infinity;

 
 

-               while (i < KC && t < roundKeyCount) {
-                 r = t >> 2;
-                 c = t % 4;
-                 this._Ke[r][c] = tk[i];
-                 this._Kd[rounds - r][c] = tk[i++];
-                 t++;
-               }
-             } // inverse-cipher-ify the decryption round key (fips-197 section 5.3)
+         for (var i = k, child; i < p; i++) {
+           child = node.children[i];
+           extend$2(destNode, node.leaf ? toBBox(child) : child);
+         }

 
 

+         return destNode;
+       }

 
 

-             for (var r = 1; r < rounds; r++) {
-               for (var c = 0; c < 4; c++) {
-                 tt = this._Kd[r][c];
-                 this._Kd[r][c] = U1[tt >> 24 & 0xFF] ^ U2[tt >> 16 & 0xFF] ^ U3[tt >> 8 & 0xFF] ^ U4[tt & 0xFF];
-               }
-             }
-           };
+       function extend$2(a, b) {
+         a.minX = Math.min(a.minX, b.minX);
+         a.minY = Math.min(a.minY, b.minY);
+         a.maxX = Math.max(a.maxX, b.maxX);
+         a.maxY = Math.max(a.maxY, b.maxY);
+         return a;
+       }

 
 

-           AES.prototype.encrypt = function (plaintext) {
-             if (plaintext.length != 16) {
-               throw new Error('invalid plaintext size (must be 16 bytes)');
-             }
+       function compareNodeMinX$1(a, b) {
+         return a.minX - b.minX;
+       }

 
 

-             var rounds = this._Ke.length - 1;
-             var a = [0, 0, 0, 0]; // convert plaintext to (ints ^ key)
+       function compareNodeMinY$1(a, b) {
+         return a.minY - b.minY;
+       }

 
 

-             var t = convertToInt32(plaintext);
+       function bboxArea$1(a) {
+         return (a.maxX - a.minX) * (a.maxY - a.minY);
+       }

 
 

-             for (var i = 0; i < 4; i++) {
-               t[i] ^= this._Ke[0][i];
-             } // apply round transforms
+       function bboxMargin$1(a) {
+         return a.maxX - a.minX + (a.maxY - a.minY);
+       }

 
 

+       function enlargedArea$1(a, b) {
+         return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) * (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
+       }

 
 

-             for (var r = 1; r < rounds; r++) {
-               for (var i = 0; i < 4; i++) {
-                 a[i] = T1[t[i] >> 24 & 0xff] ^ T2[t[(i + 1) % 4] >> 16 & 0xff] ^ T3[t[(i + 2) % 4] >> 8 & 0xff] ^ T4[t[(i + 3) % 4] & 0xff] ^ this._Ke[r][i];
-               }
+       function intersectionArea$1(a, b) {
+         var minX = Math.max(a.minX, b.minX),
+             minY = Math.max(a.minY, b.minY),
+             maxX = Math.min(a.maxX, b.maxX),
+             maxY = Math.min(a.maxY, b.maxY);
+         return Math.max(0, maxX - minX) * Math.max(0, maxY - minY);
+       }

 
 

-               t = a.slice();
-             } // the last round is special
+       function contains$1(a, b) {
+         return a.minX <= b.minX && a.minY <= b.minY && b.maxX <= a.maxX && b.maxY <= a.maxY;
+       }

 
 

+       function intersects$1(a, b) {
+         return b.minX <= a.maxX && b.minY <= a.maxY && b.maxX >= a.minX && b.maxY >= a.minY;
+       }

 
 

-             var result = createArray(16),
-                 tt;
+       function createNode$1(children) {
+         return {
+           children: children,
+           height: 1,
+           leaf: true,
+           minX: Infinity,
+           minY: Infinity,
+           maxX: -Infinity,
+           maxY: -Infinity
+         };
+       } // sort an array so that items come in groups of n unsorted items, with groups sorted between each other;
+       // combines selection algorithm with binary divide & conquer approach

 
 

-             for (var i = 0; i < 4; i++) {
-               tt = this._Ke[rounds][i];
-               result[4 * i] = (S[t[i] >> 24 & 0xff] ^ tt >> 24) & 0xff;
-               result[4 * i + 1] = (S[t[(i + 1) % 4] >> 16 & 0xff] ^ tt >> 16) & 0xff;
-               result[4 * i + 2] = (S[t[(i + 2) % 4] >> 8 & 0xff] ^ tt >> 8) & 0xff;
-               result[4 * i + 3] = (S[t[(i + 3) % 4] & 0xff] ^ tt) & 0xff;
-             }

 
 

-             return result;
-           };
+       function multiSelect$1(arr, left, right, n, compare) {
+         var stack = [left, right],
+             mid;

 
 

-           AES.prototype.decrypt = function (ciphertext) {
-             if (ciphertext.length != 16) {
-               throw new Error('invalid ciphertext size (must be 16 bytes)');
-             }
+         while (stack.length) {
+           right = stack.pop();
+           left = stack.pop();
+           if (right - left <= n) continue;
+           mid = left + Math.ceil((right - left) / n / 2) * n;
+           quickselect$1(arr, mid, left, right, compare);
+           stack.push(left, mid, mid, right);
+         }
+       }

 
 

-             var rounds = this._Kd.length - 1;
-             var a = [0, 0, 0, 0]; // convert plaintext to (ints ^ key)
+       var lineclip_1 = lineclip$2;
+       lineclip$2.polyline = lineclip$2;
+       lineclip$2.polygon = polygonclip$1; // Cohen-Sutherland line clippign algorithm, adapted to efficiently
+       // handle polylines rather than just segments

 
 

-             var t = convertToInt32(ciphertext);
+       function lineclip$2(points, bbox, result) {
+         var len = points.length,
+             codeA = bitCode$1(points[0], bbox),
+             part = [],
+             i,
+             a,
+             b,
+             codeB,
+             lastCode;
+         if (!result) result = [];

 
 

-             for (var i = 0; i < 4; i++) {
-               t[i] ^= this._Kd[0][i];
-             } // apply round transforms
+         for (i = 1; i < len; i++) {
+           a = points[i - 1];
+           b = points[i];
+           codeB = lastCode = bitCode$1(b, bbox);

 
 

+           while (true) {
+             if (!(codeA | codeB)) {
+               // accept
+               part.push(a);

 
 

-             for (var r = 1; r < rounds; r++) {
-               for (var i = 0; i < 4; i++) {
-                 a[i] = T5[t[i] >> 24 & 0xff] ^ T6[t[(i + 3) % 4] >> 16 & 0xff] ^ T7[t[(i + 2) % 4] >> 8 & 0xff] ^ T8[t[(i + 1) % 4] & 0xff] ^ this._Kd[r][i];
+               if (codeB !== lastCode) {
+                 // segment went outside
+                 part.push(b);
+
+                 if (i < len - 1) {
+                   // start a new line
+                   result.push(part);
+                   part = [];
+                 }
+               } else if (i === len - 1) {
+                 part.push(b);

                }
 
                }
 

-               t = a.slice();
-             } // the last round is special
+               break;
+             } else if (codeA & codeB) {
+               // trivial reject
+               break;
+             } else if (codeA) {
+               // a outside, intersect with clip edge
+               a = intersect$1(a, b, codeA, bbox);
+               codeA = bitCode$1(a, bbox);
+             } else {
+               // b outside
+               b = intersect$1(a, b, codeB, bbox);
+               codeB = bitCode$1(b, bbox);
+             }
+           }

 
 

+           codeA = lastCode;
+         }

 
 

-             var result = createArray(16),
-                 tt;
+         if (part.length) result.push(part);
+         return result;
+       } // Sutherland-Hodgeman polygon clipping algorithm

 
 

-             for (var i = 0; i < 4; i++) {
-               tt = this._Kd[rounds][i];
-               result[4 * i] = (Si[t[i] >> 24 & 0xff] ^ tt >> 24) & 0xff;
-               result[4 * i + 1] = (Si[t[(i + 3) % 4] >> 16 & 0xff] ^ tt >> 16) & 0xff;
-               result[4 * i + 2] = (Si[t[(i + 2) % 4] >> 8 & 0xff] ^ tt >> 8) & 0xff;
-               result[4 * i + 3] = (Si[t[(i + 1) % 4] & 0xff] ^ tt) & 0xff;
-             }

 
 

-             return result;
-           };
-           /**
-            *  Mode Of Operation - Electonic Codebook (ECB)
-            */
+       function polygonclip$1(points, bbox) {
+         var result, edge, prev, prevInside, i, p, inside; // clip against each side of the clip rectangle

 
 

+         for (edge = 1; edge <= 8; edge *= 2) {
+           result = [];
+           prev = points[points.length - 1];
+           prevInside = !(bitCode$1(prev, bbox) & edge);

 
 

-           var ModeOfOperationECB = function ModeOfOperationECB(key) {
-             if (!(this instanceof ModeOfOperationECB)) {
-               throw Error('AES must be instanitated with `new`');
-             }
+           for (i = 0; i < points.length; i++) {
+             p = points[i];
+             inside = !(bitCode$1(p, bbox) & edge); // if segment goes through the clip window, add an intersection

 
 

-             this.description = "Electronic Code Block";
-             this.name = "ecb";
-             this._aes = new AES(key);
-           };
+             if (inside !== prevInside) result.push(intersect$1(prev, p, edge, bbox));
+             if (inside) result.push(p); // add a point if it's inside

 
 

-           ModeOfOperationECB.prototype.encrypt = function (plaintext) {
-             plaintext = coerceArray(plaintext);
+             prev = p;
+             prevInside = inside;
+           }

 
 

-             if (plaintext.length % 16 !== 0) {
-               throw new Error('invalid plaintext size (must be multiple of 16 bytes)');
-             }
+           points = result;
+           if (!points.length) break;
+         }

 
 

-             var ciphertext = createArray(plaintext.length);
-             var block = createArray(16);
+         return result;
+       } // intersect a segment against one of the 4 lines that make up the bbox

 
 

-             for (var i = 0; i < plaintext.length; i += 16) {
-               copyArray(plaintext, block, 0, i, i + 16);
-               block = this._aes.encrypt(block);
-               copyArray(block, ciphertext, i);
-             }

 
 

-             return ciphertext;
-           };
+       function intersect$1(a, b, edge, bbox) {
+         return edge & 8 ? [a[0] + (b[0] - a[0]) * (bbox[3] - a[1]) / (b[1] - a[1]), bbox[3]] : // top
+         edge & 4 ? [a[0] + (b[0] - a[0]) * (bbox[1] - a[1]) / (b[1] - a[1]), bbox[1]] : // bottom
+         edge & 2 ? [bbox[2], a[1] + (b[1] - a[1]) * (bbox[2] - a[0]) / (b[0] - a[0])] : // right
+         edge & 1 ? [bbox[0], a[1] + (b[1] - a[1]) * (bbox[0] - a[0]) / (b[0] - a[0])] : // left
+         null;
+       } // bit code reflects the point position relative to the bbox:
+       //         left  mid  right
+       //    top  1001  1000  1010
+       //    mid  0001  0000  0010
+       // bottom  0101  0100  0110

 
 

-           ModeOfOperationECB.prototype.decrypt = function (ciphertext) {
-             ciphertext = coerceArray(ciphertext);

 
 

-             if (ciphertext.length % 16 !== 0) {
-               throw new Error('invalid ciphertext size (must be multiple of 16 bytes)');
-             }
+       function bitCode$1(p, bbox) {
+         var code = 0;
+         if (p[0] < bbox[0]) code |= 1; // left
+         else if (p[0] > bbox[2]) code |= 2; // right

 
 

-             var plaintext = createArray(ciphertext.length);
-             var block = createArray(16);
+         if (p[1] < bbox[1]) code |= 4; // bottom
+         else if (p[1] > bbox[3]) code |= 8; // top

 
 

-             for (var i = 0; i < ciphertext.length; i += 16) {
-               copyArray(ciphertext, block, 0, i, i + 16);
-               block = this._aes.decrypt(block);
-               copyArray(block, plaintext, i);
-             }
+         return code;
+       }

 
 

-             return plaintext;
-           };
-           /**
-            *  Mode Of Operation - Cipher Block Chaining (CBC)
-            */
+       var rbush = rbush$2.exports;
+       var lineclip$1 = lineclip_1;
+       var whichPolygon_1 = whichPolygon;

 
 

+       function whichPolygon(data) {
+         var bboxes = [];

 
 

-           var ModeOfOperationCBC = function ModeOfOperationCBC(key, iv) {
-             if (!(this instanceof ModeOfOperationCBC)) {
-               throw Error('AES must be instanitated with `new`');
+         for (var i = 0; i < data.features.length; i++) {
+           var feature = data.features[i];
+           var coords = feature.geometry.coordinates;
+
+           if (feature.geometry.type === 'Polygon') {
+             bboxes.push(treeItem(coords, feature.properties));
+           } else if (feature.geometry.type === 'MultiPolygon') {
+             for (var j = 0; j < coords.length; j++) {
+               bboxes.push(treeItem(coords[j], feature.properties));

              }
              }

+           }
+         }

 
 

-             this.description = "Cipher Block Chaining";
-             this.name = "cbc";
+         var tree = rbush().load(bboxes);

 
 

-             if (!iv) {
-               iv = createArray(16);
-             } else if (iv.length != 16) {
-               throw new Error('invalid initialation vector size (must be 16 bytes)');
-             }
-
-             this._lastCipherblock = coerceArray(iv, true);
-             this._aes = new AES(key);
-           };
-
-           ModeOfOperationCBC.prototype.encrypt = function (plaintext) {
-             plaintext = coerceArray(plaintext);
-
-             if (plaintext.length % 16 !== 0) {
-               throw new Error('invalid plaintext size (must be multiple of 16 bytes)');
-             }
-
-             var ciphertext = createArray(plaintext.length);
-             var block = createArray(16);
-
-             for (var i = 0; i < plaintext.length; i += 16) {
-               copyArray(plaintext, block, 0, i, i + 16);
-
-               for (var j = 0; j < 16; j++) {
-                 block[j] ^= this._lastCipherblock[j];
-               }
-
-               this._lastCipherblock = this._aes.encrypt(block);
-               copyArray(this._lastCipherblock, ciphertext, i);
-             }
-
-             return ciphertext;
-           };
-
-           ModeOfOperationCBC.prototype.decrypt = function (ciphertext) {
-             ciphertext = coerceArray(ciphertext);
-
-             if (ciphertext.length % 16 !== 0) {
-               throw new Error('invalid ciphertext size (must be multiple of 16 bytes)');
-             }
-
-             var plaintext = createArray(ciphertext.length);
-             var block = createArray(16);
-
-             for (var i = 0; i < ciphertext.length; i += 16) {
-               copyArray(ciphertext, block, 0, i, i + 16);
-               block = this._aes.decrypt(block);
-
-               for (var j = 0; j < 16; j++) {
-                 plaintext[i + j] = block[j] ^ this._lastCipherblock[j];
-               }
-
-               copyArray(ciphertext, this._lastCipherblock, 0, i, i + 16);
-             }
-
-             return plaintext;
-           };
-           /**
-            *  Mode Of Operation - Cipher Feedback (CFB)
-            */
-
-
-           var ModeOfOperationCFB = function ModeOfOperationCFB(key, iv, segmentSize) {
-             if (!(this instanceof ModeOfOperationCFB)) {
-               throw Error('AES must be instanitated with `new`');
-             }
-
-             this.description = "Cipher Feedback";
-             this.name = "cfb";
-
-             if (!iv) {
-               iv = createArray(16);
-             } else if (iv.length != 16) {
-               throw new Error('invalid initialation vector size (must be 16 size)');
-             }
-
-             if (!segmentSize) {
-               segmentSize = 1;
-             }
-
-             this.segmentSize = segmentSize;
-             this._shiftRegister = coerceArray(iv, true);
-             this._aes = new AES(key);
-           };
-
-           ModeOfOperationCFB.prototype.encrypt = function (plaintext) {
-             if (plaintext.length % this.segmentSize != 0) {
-               throw new Error('invalid plaintext size (must be segmentSize bytes)');
-             }
-
-             var encrypted = coerceArray(plaintext, true);
-             var xorSegment;
-
-             for (var i = 0; i < encrypted.length; i += this.segmentSize) {
-               xorSegment = this._aes.encrypt(this._shiftRegister);
-
-               for (var j = 0; j < this.segmentSize; j++) {
-                 encrypted[i + j] ^= xorSegment[j];
-               } // Shift the register
-
-
-               copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize);
-               copyArray(encrypted, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize);
-             }
-
-             return encrypted;
-           };
-
-           ModeOfOperationCFB.prototype.decrypt = function (ciphertext) {
-             if (ciphertext.length % this.segmentSize != 0) {
-               throw new Error('invalid ciphertext size (must be segmentSize bytes)');
-             }
-
-             var plaintext = coerceArray(ciphertext, true);
-             var xorSegment;
-
-             for (var i = 0; i < plaintext.length; i += this.segmentSize) {
-               xorSegment = this._aes.encrypt(this._shiftRegister);
-
-               for (var j = 0; j < this.segmentSize; j++) {
-                 plaintext[i + j] ^= xorSegment[j];
-               } // Shift the register
-
-
-               copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize);
-               copyArray(ciphertext, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize);
-             }
-
-             return plaintext;
-           };
-           /**
-            *  Mode Of Operation - Output Feedback (OFB)
-            */
-
-
-           var ModeOfOperationOFB = function ModeOfOperationOFB(key, iv) {
-             if (!(this instanceof ModeOfOperationOFB)) {
-               throw Error('AES must be instanitated with `new`');
-             }
-
-             this.description = "Output Feedback";
-             this.name = "ofb";
-
-             if (!iv) {
-               iv = createArray(16);
-             } else if (iv.length != 16) {
-               throw new Error('invalid initialation vector size (must be 16 bytes)');
-             }
-
-             this._lastPrecipher = coerceArray(iv, true);
-             this._lastPrecipherIndex = 16;
-             this._aes = new AES(key);
-           };
-
-           ModeOfOperationOFB.prototype.encrypt = function (plaintext) {
-             var encrypted = coerceArray(plaintext, true);
-
-             for (var i = 0; i < encrypted.length; i++) {
-               if (this._lastPrecipherIndex === 16) {
-                 this._lastPrecipher = this._aes.encrypt(this._lastPrecipher);
-                 this._lastPrecipherIndex = 0;
-               }
-
-               encrypted[i] ^= this._lastPrecipher[this._lastPrecipherIndex++];
-             }
-
-             return encrypted;
-           }; // Decryption is symetric
-
-
-           ModeOfOperationOFB.prototype.decrypt = ModeOfOperationOFB.prototype.encrypt;
-           /**
-            *  Counter object for CTR common mode of operation
-            */
-
-           var Counter = function Counter(initialValue) {
-             if (!(this instanceof Counter)) {
-               throw Error('Counter must be instanitated with `new`');
-             } // We allow 0, but anything false-ish uses the default 1
-
-
-             if (initialValue !== 0 && !initialValue) {
-               initialValue = 1;
-             }
-
-             if (typeof initialValue === 'number') {
-               this._counter = createArray(16);
-               this.setValue(initialValue);
-             } else {
-               this.setBytes(initialValue);
-             }
-           };
-
-           Counter.prototype.setValue = function (value) {
-             if (typeof value !== 'number' || parseInt(value) != value) {
-               throw new Error('invalid counter value (must be an integer)');
-             } // We cannot safely handle numbers beyond the safe range for integers
-
-
-             if (value > Number.MAX_SAFE_INTEGER) {
-               throw new Error('integer value out of safe range');
-             }
-
-             for (var index = 15; index >= 0; --index) {
-               this._counter[index] = value % 256;
-               value = parseInt(value / 256);
-             }
-           };
-
-           Counter.prototype.setBytes = function (bytes) {
-             bytes = coerceArray(bytes, true);
-
-             if (bytes.length != 16) {
-               throw new Error('invalid counter bytes size (must be 16 bytes)');
-             }
-
-             this._counter = bytes;
-           };
-
-           Counter.prototype.increment = function () {
-             for (var i = 15; i >= 0; i--) {
-               if (this._counter[i] === 255) {
-                 this._counter[i] = 0;
-               } else {
-                 this._counter[i]++;
-                 break;
-               }
-             }
-           };
-           /**
-            *  Mode Of Operation - Counter (CTR)
-            */
-
-
-           var ModeOfOperationCTR = function ModeOfOperationCTR(key, counter) {
-             if (!(this instanceof ModeOfOperationCTR)) {
-               throw Error('AES must be instanitated with `new`');
-             }
-
-             this.description = "Counter";
-             this.name = "ctr";
-
-             if (!(counter instanceof Counter)) {
-               counter = new Counter(counter);
-             }
-
-             this._counter = counter;
-             this._remainingCounter = null;
-             this._remainingCounterIndex = 16;
-             this._aes = new AES(key);
-           };
-
-           ModeOfOperationCTR.prototype.encrypt = function (plaintext) {
-             var encrypted = coerceArray(plaintext, true);
-
-             for (var i = 0; i < encrypted.length; i++) {
-               if (this._remainingCounterIndex === 16) {
-                 this._remainingCounter = this._aes.encrypt(this._counter._counter);
-                 this._remainingCounterIndex = 0;
-
-                 this._counter.increment();
-               }
-
-               encrypted[i] ^= this._remainingCounter[this._remainingCounterIndex++];
-             }
-
-             return encrypted;
-           }; // Decryption is symetric
-
-
-           ModeOfOperationCTR.prototype.decrypt = ModeOfOperationCTR.prototype.encrypt; ///////////////////////
-           // Padding
-           // See:https://tools.ietf.org/html/rfc2315
-
-           function pkcs7pad(data) {
-             data = coerceArray(data, true);
-             var padder = 16 - data.length % 16;
-             var result = createArray(data.length + padder);
-             copyArray(data, result);
+         function query(p, multi) {
+           var output = [],
+               result = tree.search({
+             minX: p[0],
+             minY: p[1],
+             maxX: p[0],
+             maxY: p[1]
+           });

 
 

-             for (var i = data.length; i < result.length; i++) {
-               result[i] = padder;
+           for (var i = 0; i < result.length; i++) {
+             if (insidePolygon(result[i].coords, p)) {
+               if (multi) output.push(result[i].props);else return result[i].props;

              }
              }

-
-             return result;

            }
 
            }
 

-           function pkcs7strip(data) {
-             data = coerceArray(data, true);
-
-             if (data.length < 16) {
-               throw new Error('PKCS#7 invalid length');
-             }
-
-             var padder = data[data.length - 1];
-
-             if (padder > 16) {
-               throw new Error('PKCS#7 padding byte out of range');
-             }
-
-             var length = data.length - padder;
-
-             for (var i = 0; i < padder; i++) {
-               if (data[length + i] !== padder) {
-                 throw new Error('PKCS#7 invalid padding byte');
-               }
-             }
+           return multi && output.length ? output : null;
+         }

 
 

-             var result = createArray(length);
-             copyArray(data, result, 0, 0, length);
-             return result;
-           } ///////////////////////
-           // Exporting
-           // The block cipher
+         query.tree = tree;

 
 

+         query.bbox = function queryBBox(bbox) {
+           var output = [];
+           var result = tree.search({
+             minX: bbox[0],
+             minY: bbox[1],
+             maxX: bbox[2],
+             maxY: bbox[3]
+           });

 
 

-           var aesjs = {
-             AES: AES,
-             Counter: Counter,
-             ModeOfOperation: {
-               ecb: ModeOfOperationECB,
-               cbc: ModeOfOperationCBC,
-               cfb: ModeOfOperationCFB,
-               ofb: ModeOfOperationOFB,
-               ctr: ModeOfOperationCTR
-             },
-             utils: {
-               hex: convertHex,
-               utf8: convertUtf8
-             },
-             padding: {
-               pkcs7: {
-                 pad: pkcs7pad,
-                 strip: pkcs7strip
-               }
-             },
-             _arrayTest: {
-               coerceArray: coerceArray,
-               createArray: createArray,
-               copyArray: copyArray
+           for (var i = 0; i < result.length; i++) {
+             if (polygonIntersectsBBox(result[i].coords, bbox)) {
+               output.push(result[i].props);

              }
              }

-           }; // node.js
-
-           {
-             module.exports = aesjs; // RequireJS/AMD
-             // http://www.requirejs.org/docs/api.html
-             // https://github.com/amdjs/amdjs-api/wiki/AMD

            }
            }

-         })();
-       });

 
 

-       // We can use keys that are 128 bits (16 bytes), 192 bits (24 bytes) or 256 bits (32 bytes).
-       // To generate a random key:  window.crypto.getRandomValues(new Uint8Array(16));
-       // This default signing key is built into iD and can be used to mask/unmask sensitive values.
+           return output;
+         };

 
 

-       var DEFAULT_128 = [250, 157, 60, 79, 142, 134, 229, 129, 138, 126, 210, 129, 29, 71, 160, 208];
-       function utilAesEncrypt(text, key) {
-         key = key || DEFAULT_128;
-         var textBytes = aesJs.utils.utf8.toBytes(text);
-         var aesCtr = new aesJs.ModeOfOperation.ctr(key);
-         var encryptedBytes = aesCtr.encrypt(textBytes);
-         var encryptedHex = aesJs.utils.hex.fromBytes(encryptedBytes);
-         return encryptedHex;
-       }
-       function utilAesDecrypt(encryptedHex, key) {
-         key = key || DEFAULT_128;
-         var encryptedBytes = aesJs.utils.hex.toBytes(encryptedHex);
-         var aesCtr = new aesJs.ModeOfOperation.ctr(key);
-         var decryptedBytes = aesCtr.decrypt(encryptedBytes);
-         var text = aesJs.utils.utf8.fromBytes(decryptedBytes);
-         return text;
+         return query;

        }
 
        }
 

-       function utilCleanTags(tags) {
-         var out = {};
-
-         for (var k in tags) {
-           if (!k) continue;
-           var v = tags[k];
+       function polygonIntersectsBBox(polygon, bbox) {
+         var bboxCenter = [(bbox[0] + bbox[2]) / 2, (bbox[1] + bbox[3]) / 2];
+         if (insidePolygon(polygon, bboxCenter)) return true;

 
 

-           if (v !== undefined) {
-             out[k] = cleanValue(k, v);
-           }
+         for (var i = 0; i < polygon.length; i++) {
+           if (lineclip$1(polygon[i], bbox).length > 0) return true;

          }
 
          }
 

-         return out;
+         return false;
+       } // ray casting algorithm for detecting if point is in polygon

 
 

-         function cleanValue(k, v) {
-           function keepSpaces(k) {
-             return /_hours|_times|:conditional$/.test(k);
-           }

 
 

-           function skip(k) {
-             return /^(description|note|fixme)$/.test(k);
-           }
+       function insidePolygon(rings, p) {
+         var inside = false;

 
 

-           if (skip(k)) return v;
-           var cleaned = v.split(';').map(function (s) {
-             return s.trim();
-           }).join(keepSpaces(k) ? '; ' : ';'); // The code below is not intended to validate websites and emails.
-           // It is only intended to prevent obvious copy-paste errors. (#2323)
-           // clean website- and email-like tags
+         for (var i = 0, len = rings.length; i < len; i++) {
+           var ring = rings[i];

 
 

-           if (k.indexOf('website') !== -1 || k.indexOf('email') !== -1 || cleaned.indexOf('http') === 0) {
-             cleaned = cleaned.replace(/[\u200B-\u200F\uFEFF]/g, ''); // strip LRM and other zero width chars
+           for (var j = 0, len2 = ring.length, k = len2 - 1; j < len2; k = j++) {
+             if (rayIntersect(p, ring[j], ring[k])) inside = !inside;

            }
            }

-
-           return cleaned;

          }
          }

-       }
-
-       // Like selection.property('value', ...), but avoids no-op value sets,
-       // which can result in layout/repaint thrashing in some situations.
-       function utilGetSetValue(selection, value) {
-         function d3_selection_value(value) {
-           function valueNull() {
-             delete this.value;
-           }
-
-           function valueConstant() {
-             if (this.value !== value) {
-               this.value = value;
-             }
-           }

 
 

-           function valueFunction() {
-             var x = value.apply(this, arguments);
+         return inside;
+       }

 
 

-             if (x === null || x === undefined) {
-               delete this.value;
-             } else if (this.value !== x) {
-               this.value = x;
-             }
-           }
+       function rayIntersect(p, p1, p2) {
+         return p1[1] > p[1] !== p2[1] > p[1] && p[0] < (p2[0] - p1[0]) * (p[1] - p1[1]) / (p2[1] - p1[1]) + p1[0];
+       }

 
 

-           return value === null || value === undefined ? valueNull : typeof value === 'function' ? valueFunction : valueConstant;
-         }
+       function treeItem(coords, props) {
+         var item = {
+           minX: Infinity,
+           minY: Infinity,
+           maxX: -Infinity,
+           maxY: -Infinity,
+           coords: coords,
+           props: props
+         };

 
 

-         if (arguments.length === 1) {
-           return selection.property('value');
+         for (var i = 0; i < coords[0].length; i++) {
+           var p = coords[0][i];
+           item.minX = Math.min(item.minX, p[0]);
+           item.minY = Math.min(item.minY, p[1]);
+           item.maxX = Math.max(item.maxX, p[0]);
+           item.maxY = Math.max(item.maxY, p[1]);

          }
 
          }
 

-         return selection.each(d3_selection_value(value));
+         return item;

        }
 
        }
 

-       function utilKeybinding(namespace) {
-         var _keybindings = {};
-
-         function testBindings(d3_event, isCapturing) {
-           var didMatch = false;
-           var bindings = Object.keys(_keybindings).map(function (id) {
-             return _keybindings[id];
-           });
-           var i, binding; // Most key shortcuts will accept either lower or uppercase ('h' or 'H'),
-           // so we don't strictly match on the shift key, but we prioritize
-           // shifted keybindings first, and fallback to unshifted only if no match.
-           // (This lets us differentiate between '←'/'⇧←' or '⌘Z'/'⌘⇧Z')
-           // priority match shifted keybindings first
-
-           for (i = 0; i < bindings.length; i++) {
-             binding = bindings[i];
-             if (!binding.event.modifiers.shiftKey) continue; // no shift
-
-             if (!!binding.capture !== isCapturing) continue;
-
-             if (matches(d3_event, binding, true)) {
-               binding.callback(d3_event);
-               didMatch = true; // match a max of one binding per event
-
-               break;
-             }
-           }
-
-           if (didMatch) return; // then unshifted keybindings
-
-           for (i = 0; i < bindings.length; i++) {
-             binding = bindings[i];
-             if (binding.event.modifiers.shiftKey) continue; // shift
-
-             if (!!binding.capture !== isCapturing) continue;
-
-             if (matches(d3_event, binding, false)) {
-               binding.callback(d3_event);
-               break;
-             }
-           }
-
-           function matches(d3_event, binding, testShift) {
-             var event = d3_event;
-             var isMatch = false;
-             var tryKeyCode = true; // Prefer a match on `KeyboardEvent.key`
-
-             if (event.key !== undefined) {
-               tryKeyCode = event.key.charCodeAt(0) > 255; // outside ISO-Latin-1
-
-               isMatch = true;
-
-               if (binding.event.key === undefined) {
-                 isMatch = false;
-               } else if (Array.isArray(binding.event.key)) {
-                 if (binding.event.key.map(function (s) {
-                   return s.toLowerCase();
-                 }).indexOf(event.key.toLowerCase()) === -1) isMatch = false;
-               } else {
-                 if (event.key.toLowerCase() !== binding.event.key.toLowerCase()) isMatch = false;
-               }
-             } // Fallback match on `KeyboardEvent.keyCode`, can happen if:
-             // - browser doesn't support `KeyboardEvent.key`
-             // - `KeyboardEvent.key` is outside ISO-Latin-1 range (cyrillic?)
-
-
-             if (!isMatch && tryKeyCode) {
-               isMatch = event.keyCode === binding.event.keyCode;
-             }
-
-             if (!isMatch) return false; // test modifier keys
-
-             if (!(event.ctrlKey && event.altKey)) {
-               // if both are set, assume AltGr and skip it - #4096
-               if (event.ctrlKey !== binding.event.modifiers.ctrlKey) return false;
-               if (event.altKey !== binding.event.modifiers.altKey) return false;
-             }
-
-             if (event.metaKey !== binding.event.modifiers.metaKey) return false;
-             if (testShift && event.shiftKey !== binding.event.modifiers.shiftKey) return false;
-             return true;
-           }
+       var type = "FeatureCollection";
+       var features = [{
+         type: "Feature",
+         properties: {
+           wikidata: "Q21",
+           nameEn: "England",
+           aliases: ["GB-ENG"],
+           country: "GB",
+           groups: ["Q23666", "Q3336843", "154", "150", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["44"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-6.03913, 51.13217], [-7.74976, 48.64773], [1.17405, 50.74239], [2.18458, 51.52087], [2.56575, 51.85301], [0.792, 57.56437], [-2.30613, 55.62698], [-2.17058, 55.45916], [-2.6095, 55.28488], [-2.63532, 55.19452], [-3.02906, 55.04606], [-3.09361, 54.94924], [-3.38407, 54.94278], [-4.1819, 54.57861], [-3.5082, 53.54318], [-3.08228, 53.25526], [-3.03675, 53.25092], [-2.92329, 53.19383], [-2.92022, 53.17685], [-2.98598, 53.15589], [-2.90649, 53.10964], [-2.87469, 53.12337], [-2.89131, 53.09374], [-2.83133, 52.99184], [-2.7251, 52.98389], [-2.72221, 52.92969], [-2.80549, 52.89428], [-2.85897, 52.94487], [-2.92401, 52.93836], [-2.97243, 52.9651], [-3.13576, 52.895], [-3.15744, 52.84947], [-3.16105, 52.79599], [-3.08734, 52.77504], [-3.01001, 52.76636], [-2.95581, 52.71794], [-3.01724, 52.72083], [-3.04398, 52.65435], [-3.13648, 52.58208], [-3.12926, 52.5286], [-3.09746, 52.53077], [-3.08662, 52.54811], [-3.00929, 52.57774], [-2.99701, 52.551], [-3.03603, 52.49969], [-3.13359, 52.49174], [-3.22971, 52.45344], [-3.22754, 52.42526], [-3.04687, 52.34504], [-2.95364, 52.3501], [-2.99701, 52.323], [-3.00785, 52.2753], [-3.09289, 52.20546], [-3.12638, 52.08114], [-2.97111, 51.90456], [-2.8818, 51.93196], [-2.78742, 51.88833], [-2.74277, 51.84367], [-2.66234, 51.83555], [-2.66336, 51.59504], [-3.20563, 51.31615], [-6.03913, 51.13217]]]]

          }
          }

-
-         function capture(d3_event) {
-           testBindings(d3_event, true);
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q22",
+           nameEn: "Scotland",
+           aliases: ["GB-SCT"],
+           country: "GB",
+           groups: ["Q23666", "Q3336843", "154", "150", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["44"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[0.792, 57.56437], [-0.3751, 61.32236], [-14.78497, 57.60709], [-6.82333, 55.83103], [-4.69044, 54.3629], [-3.38407, 54.94278], [-3.09361, 54.94924], [-3.02906, 55.04606], [-2.63532, 55.19452], [-2.6095, 55.28488], [-2.17058, 55.45916], [-2.30613, 55.62698], [0.792, 57.56437]]]]

          }
          }

-
-         function bubble(d3_event) {
-           var tagName = select(d3_event.target).node().tagName;
-
-           if (tagName === 'INPUT' || tagName === 'SELECT' || tagName === 'TEXTAREA') {
-             return;
-           }
-
-           testBindings(d3_event, false);
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q25",
+           nameEn: "Wales",
+           aliases: ["GB-WLS"],
+           country: "GB",
+           groups: ["Q23666", "Q3336843", "154", "150", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["44"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-3.5082, 53.54318], [-5.37267, 53.63269], [-6.03913, 51.13217], [-3.20563, 51.31615], [-2.66336, 51.59504], [-2.66234, 51.83555], [-2.74277, 51.84367], [-2.78742, 51.88833], [-2.8818, 51.93196], [-2.97111, 51.90456], [-3.12638, 52.08114], [-3.09289, 52.20546], [-3.00785, 52.2753], [-2.99701, 52.323], [-2.95364, 52.3501], [-3.04687, 52.34504], [-3.22754, 52.42526], [-3.22971, 52.45344], [-3.13359, 52.49174], [-3.03603, 52.49969], [-2.99701, 52.551], [-3.00929, 52.57774], [-3.08662, 52.54811], [-3.09746, 52.53077], [-3.12926, 52.5286], [-3.13648, 52.58208], [-3.04398, 52.65435], [-3.01724, 52.72083], [-2.95581, 52.71794], [-3.01001, 52.76636], [-3.08734, 52.77504], [-3.16105, 52.79599], [-3.15744, 52.84947], [-3.13576, 52.895], [-2.97243, 52.9651], [-2.92401, 52.93836], [-2.85897, 52.94487], [-2.80549, 52.89428], [-2.72221, 52.92969], [-2.7251, 52.98389], [-2.83133, 52.99184], [-2.89131, 53.09374], [-2.87469, 53.12337], [-2.90649, 53.10964], [-2.98598, 53.15589], [-2.92022, 53.17685], [-2.92329, 53.19383], [-3.03675, 53.25092], [-3.08228, 53.25526], [-3.5082, 53.54318]]]]

          }
          }

-
-         function keybinding(selection) {
-           selection = selection || select(document);
-           selection.on('keydown.capture.' + namespace, capture, true);
-           selection.on('keydown.bubble.' + namespace, bubble, false);
-           return keybinding;
-         } // was: keybinding.off()
-
-
-         keybinding.unbind = function (selection) {
-           _keybindings = [];
-           selection = selection || select(document);
-           selection.on('keydown.capture.' + namespace, null);
-           selection.on('keydown.bubble.' + namespace, null);
-           return keybinding;
-         };
-
-         keybinding.clear = function () {
-           _keybindings = {};
-           return keybinding;
-         }; // Remove one or more keycode bindings.
-
-
-         keybinding.off = function (codes, capture) {
-           var arr = utilArrayUniq([].concat(codes));
-
-           for (var i = 0; i < arr.length; i++) {
-             var id = arr[i] + (capture ? '-capture' : '-bubble');
-             delete _keybindings[id];
-           }
-
-           return keybinding;
-         }; // Add one or more keycode bindings.
-
-
-         keybinding.on = function (codes, callback, capture) {
-           if (typeof callback !== 'function') {
-             return keybinding.off(codes, capture);
-           }
-
-           var arr = utilArrayUniq([].concat(codes));
-
-           for (var i = 0; i < arr.length; i++) {
-             var id = arr[i] + (capture ? '-capture' : '-bubble');
-             var binding = {
-               id: id,
-               capture: capture,
-               callback: callback,
-               event: {
-                 key: undefined,
-                 // preferred
-                 keyCode: 0,
-                 // fallback
-                 modifiers: {
-                   shiftKey: false,
-                   ctrlKey: false,
-                   altKey: false,
-                   metaKey: false
-                 }
-               }
-             };
-
-             if (_keybindings[id]) {
-               console.warn('warning: duplicate keybinding for "' + id + '"'); // eslint-disable-line no-console
-             }
-
-             _keybindings[id] = binding;
-             var matches = arr[i].toLowerCase().match(/(?:(?:[^+⇧⌃⌥⌘])+|[⇧⌃⌥⌘]|\+\+|^\+$)/g);
-
-             for (var j = 0; j < matches.length; j++) {
-               // Normalise matching errors
-               if (matches[j] === '++') matches[j] = '+';
-
-               if (matches[j] in utilKeybinding.modifierCodes) {
-                 var prop = utilKeybinding.modifierProperties[utilKeybinding.modifierCodes[matches[j]]];
-                 binding.event.modifiers[prop] = true;
-               } else {
-                 binding.event.key = utilKeybinding.keys[matches[j]] || matches[j];
-
-                 if (matches[j] in utilKeybinding.keyCodes) {
-                   binding.event.keyCode = utilKeybinding.keyCodes[matches[j]];
-                 }
-               }
-             }
-           }
-
-           return keybinding;
-         };
-
-         return keybinding;
-       }
-       /*
-        * See https://github.com/keithamus/jwerty
-        */
-
-       utilKeybinding.modifierCodes = {
-         // Shift key, ⇧
-         '⇧': 16,
-         shift: 16,
-         // CTRL key, on Mac: ⌃
-         '⌃': 17,
-         ctrl: 17,
-         // ALT key, on Mac: ⌥ (Alt)
-         '⌥': 18,
-         alt: 18,
-         option: 18,
-         // META, on Mac: ⌘ (CMD), on Windows (Win), on Linux (Super)
-         '⌘': 91,
-         meta: 91,
-         cmd: 91,
-         'super': 91,
-         win: 91
-       };
-       utilKeybinding.modifierProperties = {
-         16: 'shiftKey',
-         17: 'ctrlKey',
-         18: 'altKey',
-         91: 'metaKey'
-       };
-       utilKeybinding.plusKeys = ['plus', 'ffplus', '=', 'ffequals', '≠', '±'];
-       utilKeybinding.minusKeys = ['_', '-', 'ffminus', 'dash', '–', '—'];
-       utilKeybinding.keys = {
-         // Backspace key, on Mac: ⌫ (Backspace)
-         '⌫': 'Backspace',
-         backspace: 'Backspace',
-         // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥
-         '⇥': 'Tab',
-         '⇆': 'Tab',
-         tab: 'Tab',
-         // Return key, ↩
-         '↩': 'Enter',
-         '↵': 'Enter',
-         '⏎': 'Enter',
-         'return': 'Enter',
-         enter: 'Enter',
-         '⌅': 'Enter',
-         // Pause/Break key
-         'pause': 'Pause',
-         'pause-break': 'Pause',
-         // Caps Lock key, ⇪
-         '⇪': 'CapsLock',
-         caps: 'CapsLock',
-         'caps-lock': 'CapsLock',
-         // Escape key, on Mac: ⎋, on Windows: Esc
-         '⎋': ['Escape', 'Esc'],
-         escape: ['Escape', 'Esc'],
-         esc: ['Escape', 'Esc'],
-         // Space key
-         space: [' ', 'Spacebar'],
-         // Page-Up key, or pgup, on Mac: ↖
-         '↖': 'PageUp',
-         pgup: 'PageUp',
-         'page-up': 'PageUp',
-         // Page-Down key, or pgdown, on Mac: ↘
-         '↘': 'PageDown',
-         pgdown: 'PageDown',
-         'page-down': 'PageDown',
-         // END key, on Mac: ⇟
-         '⇟': 'End',
-         end: 'End',
-         // HOME key, on Mac: ⇞
-         '⇞': 'Home',
-         home: 'Home',
-         // Insert key, or ins
-         ins: 'Insert',
-         insert: 'Insert',
-         // Delete key, on Mac: ⌦ (Delete)
-         '⌦': ['Delete', 'Del'],
-         del: ['Delete', 'Del'],
-         'delete': ['Delete', 'Del'],
-         // Left Arrow Key, or ←
-         '←': ['ArrowLeft', 'Left'],
-         left: ['ArrowLeft', 'Left'],
-         'arrow-left': ['ArrowLeft', 'Left'],
-         // Up Arrow Key, or ↑
-         '↑': ['ArrowUp', 'Up'],
-         up: ['ArrowUp', 'Up'],
-         'arrow-up': ['ArrowUp', 'Up'],
-         // Right Arrow Key, or →
-         '→': ['ArrowRight', 'Right'],
-         right: ['ArrowRight', 'Right'],
-         'arrow-right': ['ArrowRight', 'Right'],
-         // Up Arrow Key, or ↓
-         '↓': ['ArrowDown', 'Down'],
-         down: ['ArrowDown', 'Down'],
-         'arrow-down': ['ArrowDown', 'Down'],
-         // odities, stuff for backward compatibility (browsers and code):
-         // Num-Multiply, or *
-         '*': ['*', 'Multiply'],
-         star: ['*', 'Multiply'],
-         asterisk: ['*', 'Multiply'],
-         multiply: ['*', 'Multiply'],
-         // Num-Plus or +
-         '+': ['+', 'Add'],
-         'plus': ['+', 'Add'],
-         // Num-Subtract, or -
-         '-': ['-', 'Subtract'],
-         subtract: ['-', 'Subtract'],
-         'dash': ['-', 'Subtract'],
-         // Semicolon
-         semicolon: ';',
-         // = or equals
-         equals: '=',
-         // Comma, or ,
-         comma: ',',
-         // Period, or ., or full-stop
-         period: '.',
-         'full-stop': '.',
-         // Slash, or /, or forward-slash
-         slash: '/',
-         'forward-slash': '/',
-         // Tick, or `, or back-quote
-         tick: '`',
-         'back-quote': '`',
-         // Open bracket, or [
-         'open-bracket': '[',
-         // Back slash, or \
-         'back-slash': '\\',
-         // Close backet, or ]
-         'close-bracket': ']',
-         // Apostrophe, or Quote, or '
-         quote: '\'',
-         apostrophe: '\'',
-         // NUMPAD 0-9
-         'num-0': '0',
-         'num-1': '1',
-         'num-2': '2',
-         'num-3': '3',
-         'num-4': '4',
-         'num-5': '5',
-         'num-6': '6',
-         'num-7': '7',
-         'num-8': '8',
-         'num-9': '9',
-         // F1-F25
-         f1: 'F1',
-         f2: 'F2',
-         f3: 'F3',
-         f4: 'F4',
-         f5: 'F5',
-         f6: 'F6',
-         f7: 'F7',
-         f8: 'F8',
-         f9: 'F9',
-         f10: 'F10',
-         f11: 'F11',
-         f12: 'F12',
-         f13: 'F13',
-         f14: 'F14',
-         f15: 'F15',
-         f16: 'F16',
-         f17: 'F17',
-         f18: 'F18',
-         f19: 'F19',
-         f20: 'F20',
-         f21: 'F21',
-         f22: 'F22',
-         f23: 'F23',
-         f24: 'F24',
-         f25: 'F25'
-       };
-       utilKeybinding.keyCodes = {
-         // Backspace key, on Mac: ⌫ (Backspace)
-         '⌫': 8,
-         backspace: 8,
-         // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥
-         '⇥': 9,
-         '⇆': 9,
-         tab: 9,
-         // Return key, ↩
-         '↩': 13,
-         '↵': 13,
-         '⏎': 13,
-         'return': 13,
-         enter: 13,
-         '⌅': 13,
-         // Pause/Break key
-         'pause': 19,
-         'pause-break': 19,
-         // Caps Lock key, ⇪
-         '⇪': 20,
-         caps: 20,
-         'caps-lock': 20,
-         // Escape key, on Mac: ⎋, on Windows: Esc
-         '⎋': 27,
-         escape: 27,
-         esc: 27,
-         // Space key
-         space: 32,
-         // Page-Up key, or pgup, on Mac: ↖
-         '↖': 33,
-         pgup: 33,
-         'page-up': 33,
-         // Page-Down key, or pgdown, on Mac: ↘
-         '↘': 34,
-         pgdown: 34,
-         'page-down': 34,
-         // END key, on Mac: ⇟
-         '⇟': 35,
-         end: 35,
-         // HOME key, on Mac: ⇞
-         '⇞': 36,
-         home: 36,
-         // Insert key, or ins
-         ins: 45,
-         insert: 45,
-         // Delete key, on Mac: ⌦ (Delete)
-         '⌦': 46,
-         del: 46,
-         'delete': 46,
-         // Left Arrow Key, or ←
-         '←': 37,
-         left: 37,
-         'arrow-left': 37,
-         // Up Arrow Key, or ↑
-         '↑': 38,
-         up: 38,
-         'arrow-up': 38,
-         // Right Arrow Key, or →
-         '→': 39,
-         right: 39,
-         'arrow-right': 39,
-         // Up Arrow Key, or ↓
-         '↓': 40,
-         down: 40,
-         'arrow-down': 40,
-         // odities, printing characters that come out wrong:
-         // Firefox Equals
-         'ffequals': 61,
-         // Num-Multiply, or *
-         '*': 106,
-         star: 106,
-         asterisk: 106,
-         multiply: 106,
-         // Num-Plus or +
-         '+': 107,
-         'plus': 107,
-         // Num-Subtract, or -
-         '-': 109,
-         subtract: 109,
-         // Firefox Plus
-         'ffplus': 171,
-         // Firefox Minus
-         'ffminus': 173,
-         // Semicolon
-         ';': 186,
-         semicolon: 186,
-         // = or equals
-         '=': 187,
-         'equals': 187,
-         // Comma, or ,
-         ',': 188,
-         comma: 188,
-         // Dash / Underscore key
-         'dash': 189,
-         // Period, or ., or full-stop
-         '.': 190,
-         period: 190,
-         'full-stop': 190,
-         // Slash, or /, or forward-slash
-         '/': 191,
-         slash: 191,
-         'forward-slash': 191,
-         // Tick, or `, or back-quote
-         '`': 192,
-         tick: 192,
-         'back-quote': 192,
-         // Open bracket, or [
-         '[': 219,
-         'open-bracket': 219,
-         // Back slash, or \
-         '\\': 220,
-         'back-slash': 220,
-         // Close backet, or ]
-         ']': 221,
-         'close-bracket': 221,
-         // Apostrophe, or Quote, or '
-         '\'': 222,
-         quote: 222,
-         apostrophe: 222
-       }; // NUMPAD 0-9
-
-       var i$1 = 95,
-           n = 0;
-
-       while (++i$1 < 106) {
-         utilKeybinding.keyCodes['num-' + n] = i$1;
-         ++n;
-       } // 0-9
-
-
-       i$1 = 47;
-       n = 0;
-
-       while (++i$1 < 58) {
-         utilKeybinding.keyCodes[n] = i$1;
-         ++n;
-       } // F1-F25
-
-
-       i$1 = 111;
-       n = 1;
-
-       while (++i$1 < 136) {
-         utilKeybinding.keyCodes['f' + n] = i$1;
-         ++n;
-       } // a-z
-
-
-       i$1 = 64;
-
-       while (++i$1 < 91) {
-         utilKeybinding.keyCodes[String.fromCharCode(i$1).toLowerCase()] = i$1;
-       }
-
-       function utilObjectOmit(obj, omitKeys) {
-         return Object.keys(obj).reduce(function (result, key) {
-           if (omitKeys.indexOf(key) === -1) {
-             result[key] = obj[key]; // keep
-           }
-
-           return result;
-         }, {});
-       }
-
-       // Copies a variable number of methods from source to target.
-       function utilRebind(target, source) {
-         var i = 1,
-             n = arguments.length,
-             method;
-
-         while (++i < n) {
-           target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q26",
+           nameEn: "Northern Ireland",
+           aliases: ["GB-NIR"],
+           country: "GB",
+           groups: ["Q22890", "Q3336843", "154", "150", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["44"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-6.34755, 55.49206], [-7.2471, 55.06933], [-7.34464, 55.04688], [-7.4033, 55.00391], [-7.40004, 54.94498], [-7.44404, 54.9403], [-7.4473, 54.87003], [-7.47626, 54.83084], [-7.54508, 54.79401], [-7.54671, 54.74606], [-7.64449, 54.75265], [-7.75041, 54.7103], [-7.83352, 54.73854], [-7.93293, 54.66603], [-7.70315, 54.62077], [-7.8596, 54.53671], [-7.99812, 54.54427], [-8.04538, 54.48941], [-8.179, 54.46763], [-8.04555, 54.36292], [-7.87101, 54.29299], [-7.8596, 54.21779], [-7.81397, 54.20159], [-7.69501, 54.20731], [-7.55812, 54.12239], [-7.4799, 54.12239], [-7.44567, 54.1539], [-7.32834, 54.11475], [-7.30553, 54.11869], [-7.34005, 54.14698], [-7.29157, 54.17191], [-7.28017, 54.16714], [-7.29687, 54.1354], [-7.29493, 54.12013], [-7.26316, 54.13863], [-7.25012, 54.20063], [-7.14908, 54.22732], [-7.19145, 54.31296], [-7.02034, 54.4212], [-6.87775, 54.34682], [-6.85179, 54.29176], [-6.81583, 54.22791], [-6.74575, 54.18788], [-6.70175, 54.20218], [-6.6382, 54.17071], [-6.66264, 54.0666], [-6.62842, 54.03503], [-6.47849, 54.06947], [-6.36605, 54.07234], [-6.36279, 54.11248], [-6.32694, 54.09337], [-6.29003, 54.11278], [-6.26218, 54.09785], [-5.83481, 53.87749], [-4.69044, 54.3629], [-6.34755, 55.49206]]]]

          }
          }

-
-         return target;
-       } // Method is assumed to be a standard D3 getter-setter:
-       // If passed with no arguments, gets the value.
-       // If passed with arguments, sets the value and returns the target.
-
-       function d3_rebind(target, source, method) {
-         return function () {
-           var value = method.apply(source, arguments);
-           return value === source ? target : value;
-         };
-       }
-
-       // A per-domain session mutex backed by a cookie and dead man's
-       // switch. If the session crashes, the mutex will auto-release
-       // after 5 seconds.
-       // This accepts a string and returns an object that complies with utilSessionMutexType
-       function utilSessionMutex(name) {
-         var mutex = {};
-         var intervalID;
-
-         function renew() {
-           var expires = new Date();
-           expires.setSeconds(expires.getSeconds() + 5);
-           document.cookie = name + '=1; expires=' + expires.toUTCString() + '; sameSite=strict';
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q35",
+           nameEn: "Denmark",
+           country: "DK",
+           groups: ["EU", "154", "150", "UN"],
+           callingCodes: ["45"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[12.16597, 56.60205], [10.40861, 58.38489], [7.28637, 57.35913], [8.02459, 55.09613], [8.45719, 55.06747], [8.55769, 54.91837], [8.63979, 54.91069], [8.76387, 54.8948], [8.81178, 54.90518], [8.92795, 54.90452], [9.04629, 54.87249], [9.14275, 54.87421], [9.20571, 54.85841], [9.24631, 54.84726], [9.23445, 54.83432], [9.2474, 54.8112], [9.32771, 54.80602], [9.33849, 54.80233], [9.36496, 54.81749], [9.38532, 54.83968], [9.41213, 54.84254], [9.43155, 54.82586], [9.4659, 54.83131], [9.58937, 54.88785], [9.62734, 54.88057], [9.61187, 54.85548], [9.73563, 54.8247], [9.89314, 54.84171], [10.16755, 54.73883], [10.31111, 54.65968], [11.00303, 54.63689], [11.90309, 54.38543], [12.85844, 54.82438], [13.93395, 54.84044], [15.36991, 54.73263], [15.79951, 55.54655], [14.89259, 55.5623], [14.28399, 55.1553], [12.84405, 55.13257], [12.60345, 55.42675], [12.88472, 55.63369], [12.6372, 55.91371], [12.65312, 56.04345], [12.07466, 56.29488], [12.16597, 56.60205]]]]

          }
          }

-
-         mutex.lock = function () {
-           if (intervalID) return true;
-           var cookie = document.cookie.replace(new RegExp('(?:(?:^|.*;)\\s*' + name + '\\s*\\=\\s*([^;]*).*$)|^.*$'), '$1');
-           if (cookie) return false;
-           renew();
-           intervalID = window.setInterval(renew, 4000);
-           return true;
-         };
-
-         mutex.unlock = function () {
-           if (!intervalID) return;
-           document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT; sameSite=strict';
-           clearInterval(intervalID);
-           intervalID = null;
-         };
-
-         mutex.locked = function () {
-           return !!intervalID;
-         };
-
-         return mutex;
-       }
-
-       function utilTiler() {
-         var _size = [256, 256];
-         var _scale = 256;
-         var _tileSize = 256;
-         var _zoomExtent = [0, 20];
-         var _translate = [_size[0] / 2, _size[1] / 2];
-         var _margin = 0;
-         var _skipNullIsland = false;
-
-         function clamp(num, min, max) {
-           return Math.max(min, Math.min(num, max));
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q55",
+           nameEn: "Netherlands",
+           country: "NL",
+           groups: ["EU", "155", "150", "UN"],
+           callingCodes: ["31"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[5.45168, 54.20039], [2.56575, 51.85301], [3.36263, 51.37112], [3.38696, 51.33436], [3.35847, 51.31572], [3.38289, 51.27331], [3.41704, 51.25933], [3.43488, 51.24135], [3.52698, 51.2458], [3.51502, 51.28697], [3.58939, 51.30064], [3.78999, 51.25766], [3.78783, 51.2151], [3.90125, 51.20371], [3.97889, 51.22537], [4.01957, 51.24504], [4.05165, 51.24171], [4.16721, 51.29348], [4.24024, 51.35371], [4.21923, 51.37443], [4.33265, 51.37687], [4.34086, 51.35738], [4.39292, 51.35547], [4.43777, 51.36989], [4.38064, 51.41965], [4.39747, 51.43316], [4.38122, 51.44905], [4.47736, 51.4778], [4.5388, 51.48184], [4.54675, 51.47265], [4.52846, 51.45002], [4.53521, 51.4243], [4.57489, 51.4324], [4.65442, 51.42352], [4.72935, 51.48424], [4.74578, 51.48937], [4.77321, 51.50529], [4.78803, 51.50284], [4.84139, 51.4799], [4.82409, 51.44736], [4.82946, 51.4213], [4.78314, 51.43319], [4.76577, 51.43046], [4.77229, 51.41337], [4.78941, 51.41102], [4.84988, 51.41502], [4.90016, 51.41404], [4.92152, 51.39487], [5.00393, 51.44406], [5.0106, 51.47167], [5.03281, 51.48679], [5.04774, 51.47022], [5.07891, 51.4715], [5.10456, 51.43163], [5.07102, 51.39469], [5.13105, 51.34791], [5.13377, 51.31592], [5.16222, 51.31035], [5.2002, 51.32243], [5.24244, 51.30495], [5.22542, 51.26888], [5.23814, 51.26064], [5.26461, 51.26693], [5.29716, 51.26104], [5.33886, 51.26314], [5.347, 51.27502], [5.41672, 51.26248], [5.4407, 51.28169], [5.46519, 51.2849], [5.48476, 51.30053], [5.515, 51.29462], [5.5569, 51.26544], [5.5603, 51.22249], [5.65145, 51.19788], [5.65528, 51.18736], [5.70344, 51.1829], [5.74617, 51.18928], [5.77735, 51.17845], [5.77697, 51.1522], [5.82564, 51.16753], [5.85508, 51.14445], [5.80798, 51.11661], [5.8109, 51.10861], [5.83226, 51.10585], [5.82921, 51.09328], [5.79903, 51.09371], [5.79835, 51.05834], [5.77258, 51.06196], [5.75961, 51.03113], [5.77688, 51.02483], [5.76242, 50.99703], [5.71864, 50.96092], [5.72875, 50.95428], [5.74752, 50.96202], [5.75927, 50.95601], [5.74644, 50.94723], [5.72545, 50.92312], [5.72644, 50.91167], [5.71626, 50.90796], [5.69858, 50.91046], [5.67886, 50.88142], [5.64504, 50.87107], [5.64009, 50.84742], [5.65259, 50.82309], [5.70118, 50.80764], [5.68995, 50.79641], [5.70107, 50.7827], [5.68091, 50.75804], [5.69469, 50.75529], [5.72216, 50.76398], [5.73904, 50.75674], [5.74356, 50.7691], [5.76533, 50.78159], [5.77513, 50.78308], [5.80673, 50.7558], [5.84548, 50.76542], [5.84888, 50.75448], [5.88734, 50.77092], [5.89129, 50.75125], [5.89132, 50.75124], [5.95942, 50.7622], [5.97545, 50.75441], [6.01976, 50.75398], [6.02624, 50.77453], [5.97497, 50.79992], [5.98404, 50.80988], [6.00462, 50.80065], [6.02328, 50.81694], [6.01921, 50.84435], [6.05623, 50.8572], [6.05702, 50.85179], [6.07431, 50.84674], [6.07693, 50.86025], [6.08805, 50.87223], [6.07486, 50.89307], [6.09297, 50.92066], [6.01615, 50.93367], [6.02697, 50.98303], [5.95282, 50.98728], [5.90296, 50.97356], [5.90493, 51.00198], [5.87849, 51.01969], [5.86735, 51.05182], [5.9134, 51.06736], [5.9541, 51.03496], [5.98292, 51.07469], [6.16706, 51.15677], [6.17384, 51.19589], [6.07889, 51.17038], [6.07889, 51.24432], [6.16977, 51.33169], [6.22674, 51.36135], [6.22641, 51.39948], [6.20654, 51.40049], [6.21724, 51.48568], [6.18017, 51.54096], [6.09055, 51.60564], [6.11759, 51.65609], [6.02767, 51.6742], [6.04091, 51.71821], [5.95003, 51.7493], [5.98665, 51.76944], [5.94568, 51.82786], [5.99848, 51.83195], [6.06705, 51.86136], [6.10337, 51.84829], [6.16902, 51.84094], [6.11551, 51.89769], [6.15349, 51.90439], [6.21443, 51.86801], [6.29872, 51.86801], [6.30593, 51.84998], [6.40704, 51.82771], [6.38815, 51.87257], [6.47179, 51.85395], [6.50231, 51.86313], [6.58556, 51.89386], [6.68386, 51.91861], [6.72319, 51.89518], [6.82357, 51.96711], [6.83035, 51.9905], [6.68128, 52.05052], [6.76117, 52.11895], [6.83984, 52.11728], [6.97189, 52.20329], [6.9897, 52.2271], [7.03729, 52.22695], [7.06365, 52.23789], [7.02703, 52.27941], [7.07044, 52.37805], [7.03417, 52.40237], [6.99041, 52.47235], [6.94293, 52.43597], [6.69507, 52.488], [6.71641, 52.62905], [6.77307, 52.65375], [7.04557, 52.63318], [7.07253, 52.81083], [7.21694, 53.00742], [7.17898, 53.13817], [7.22681, 53.18165], [7.21679, 53.20058], [7.19052, 53.31866], [7.00198, 53.32672], [6.91025, 53.44221], [5.45168, 54.20039]], [[4.93295, 51.44945], [4.95244, 51.45207], [4.9524, 51.45014], [4.93909, 51.44632], [4.93295, 51.44945]], [[4.91493, 51.4353], [4.91935, 51.43634], [4.92227, 51.44252], [4.91811, 51.44621], [4.92287, 51.44741], [4.92811, 51.4437], [4.92566, 51.44273], [4.92815, 51.43856], [4.92879, 51.44161], [4.93544, 51.44634], [4.94025, 51.44193], [4.93416, 51.44185], [4.93471, 51.43861], [4.94265, 51.44003], [4.93986, 51.43064], [4.92952, 51.42984], [4.92652, 51.43329], [4.91493, 51.4353]]]]

          }
          }

-
-         function nearNullIsland(tile) {
-           var x = tile[0];
-           var y = tile[1];
-           var z = tile[2];
-
-           if (z >= 7) {
-             var center = Math.pow(2, z - 1);
-             var width = Math.pow(2, z - 6);
-             var min = center - width / 2;
-             var max = center + width / 2 - 1;
-             return x >= min && x <= max && y >= min && y <= max;
-           }
-
-           return false;
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q782",
+           nameEn: "Hawaii",
+           aliases: ["US-HI"],
+           country: "US",
+           groups: ["Q35657", "061", "009", "UN"],
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["1"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-177.8563, 29.18961], [-179.49839, 27.86265], [-151.6784, 9.55515], [-154.05867, 45.51124], [-177.5224, 27.7635], [-177.8563, 29.18961]]]]

          }
          }

-
-         function tiler() {
-           var z = geoScaleToZoom(_scale / (2 * Math.PI), _tileSize);
-           var z0 = clamp(Math.round(z), _zoomExtent[0], _zoomExtent[1]);
-           var tileMin = 0;
-           var tileMax = Math.pow(2, z0) - 1;
-           var log2ts = Math.log(_tileSize) * Math.LOG2E;
-           var k = Math.pow(2, z - z0 + log2ts);
-           var origin = [(_translate[0] - _scale / 2) / k, (_translate[1] - _scale / 2) / k];
-           var cols = range(clamp(Math.floor(-origin[0]) - _margin, tileMin, tileMax + 1), clamp(Math.ceil(_size[0] / k - origin[0]) + _margin, tileMin, tileMax + 1));
-           var rows = range(clamp(Math.floor(-origin[1]) - _margin, tileMin, tileMax + 1), clamp(Math.ceil(_size[1] / k - origin[1]) + _margin, tileMin, tileMax + 1));
-           var tiles = [];
-
-           for (var i = 0; i < rows.length; i++) {
-             var y = rows[i];
-
-             for (var j = 0; j < cols.length; j++) {
-               var x = cols[j];
-
-               if (i >= _margin && i <= rows.length - _margin && j >= _margin && j <= cols.length - _margin) {
-                 tiles.unshift([x, y, z0]); // tiles in view at beginning
-               } else {
-                 tiles.push([x, y, z0]); // tiles in margin at the end
-               }
-             }
-           }
-
-           tiles.translate = origin;
-           tiles.scale = k;
-           return tiles;
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q797",
+           nameEn: "Alaska",
+           aliases: ["US-AK"],
+           country: "US",
+           groups: ["Q35657", "021", "003", "019", "UN"],
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["1"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[169.34848, 52.47228], [180, 51.0171], [179.84401, 55.10087], [169.34848, 52.47228]]], [[[-168.95635, 65.98512], [-169.03888, 65.48473], [-172.76104, 63.77445], [-179.55295, 57.62081], [-179.55295, 50.81807], [-133.92876, 54.62289], [-130.61931, 54.70835], [-130.64499, 54.76912], [-130.44184, 54.85377], [-130.27203, 54.97174], [-130.18765, 55.07744], [-130.08035, 55.21556], [-129.97513, 55.28029], [-130.15373, 55.74895], [-130.00857, 55.91344], [-130.00093, 56.00325], [-130.10173, 56.12178], [-130.33965, 56.10849], [-130.77769, 56.36185], [-131.8271, 56.62247], [-133.38523, 58.42773], [-133.84645, 58.73543], [-134.27175, 58.8634], [-134.48059, 59.13231], [-134.55699, 59.1297], [-134.7047, 59.2458], [-135.00267, 59.28745], [-135.03069, 59.56208], [-135.48007, 59.79937], [-136.31566, 59.59083], [-136.22381, 59.55526], [-136.33727, 59.44466], [-136.47323, 59.46617], [-136.52365, 59.16752], [-136.82619, 59.16198], [-137.4925, 58.89415], [-137.60623, 59.24465], [-138.62145, 59.76431], [-138.71149, 59.90728], [-139.05365, 59.99655], [-139.20603, 60.08896], [-139.05831, 60.35205], [-139.68991, 60.33693], [-139.98024, 60.18027], [-140.45648, 60.30919], [-140.5227, 60.22077], [-141.00116, 60.30648], [-140.97446, 84.39275], [-168.25765, 71.99091], [-168.95635, 65.98512]]]]

          }
          }

-         /**
-          * getTiles() returns an array of tiles that cover the map view
-          */
-
-
-         tiler.getTiles = function (projection) {
-           var origin = [projection.scale() * Math.PI - projection.translate()[0], projection.scale() * Math.PI - projection.translate()[1]];
-           this.size(projection.clipExtent()[1]).scale(projection.scale() * 2 * Math.PI).translate(projection.translate());
-           var tiles = tiler();
-           var ts = tiles.scale;
-           return tiles.map(function (tile) {
-             if (_skipNullIsland && nearNullIsland(tile)) {
-               return false;
-             }
-
-             var x = tile[0] * ts - origin[0];
-             var y = tile[1] * ts - origin[1];
-             return {
-               id: tile.toString(),
-               xyz: tile,
-               extent: geoExtent(projection.invert([x, y + ts]), projection.invert([x + ts, y]))
-             };
-           }).filter(Boolean);
-         };
-         /**
-          * getGeoJSON() returns a FeatureCollection for debugging tiles
-          */
-
-
-         tiler.getGeoJSON = function (projection) {
-           var features = tiler.getTiles(projection).map(function (tile) {
-             return {
-               type: 'Feature',
-               properties: {
-                 id: tile.id,
-                 name: tile.id
-               },
-               geometry: {
-                 type: 'Polygon',
-                 coordinates: [tile.extent.polygon()]
-               }
-             };
-           });
-           return {
-             type: 'FeatureCollection',
-             features: features
-           };
-         };
-
-         tiler.tileSize = function (val) {
-           if (!arguments.length) return _tileSize;
-           _tileSize = val;
-           return tiler;
-         };
-
-         tiler.zoomExtent = function (val) {
-           if (!arguments.length) return _zoomExtent;
-           _zoomExtent = val;
-           return tiler;
-         };
-
-         tiler.size = function (val) {
-           if (!arguments.length) return _size;
-           _size = val;
-           return tiler;
-         };
-
-         tiler.scale = function (val) {
-           if (!arguments.length) return _scale;
-           _scale = val;
-           return tiler;
-         };
-
-         tiler.translate = function (val) {
-           if (!arguments.length) return _translate;
-           _translate = val;
-           return tiler;
-         }; // number to extend the rows/columns beyond those covering the viewport
-
-
-         tiler.margin = function (val) {
-           if (!arguments.length) return _margin;
-           _margin = +val;
-           return tiler;
-         };
-
-         tiler.skipNullIsland = function (val) {
-           if (!arguments.length) return _skipNullIsland;
-           _skipNullIsland = val;
-           return tiler;
-         };
-
-         return tiler;
-       }
-
-       function utilTriggerEvent(target, type) {
-         target.each(function () {
-           var evt = document.createEvent('HTMLEvents');
-           evt.initEvent(type, true, true);
-           this.dispatchEvent(evt);
-         });
-       }
-
-       var _mainLocalizer = coreLocalizer(); // singleton
-
-
-       var _t = _mainLocalizer.t;
-       // coreLocalizer manages language and locale parameters including translated strings
-       //
-
-       function coreLocalizer() {
-         var localizer = {};
-         var _dataLanguages = {}; // `_dataLocales` is an object containing all _supported_ locale codes -> language info.
-         // * `rtl` - right-to-left or left-to-right text direction
-         // * `pct` - the percent of strings translated; 1 = 100%, full coverage
-         //
-         // {
-         // en: { rtl: false, pct: {…} },
-         // de: { rtl: false, pct: {…} },
-         // …
-         // }
-
-         var _dataLocales = {}; // `localeStrings` is an object containing all _loaded_ locale codes -> string data.
-         // {
-         // en: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
-         // de: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
-         // …
-         // }
-
-         var _localeStrings = {}; // the current locale
-
-         var _localeCode = 'en-US'; // `_localeCodes` must contain `_localeCode` first, optionally followed by fallbacks
-
-         var _localeCodes = ['en-US', 'en'];
-         var _languageCode = 'en';
-         var _textDirection = 'ltr';
-         var _usesMetric = false;
-         var _languageNames = {};
-         var _scriptNames = {}; // getters for the current locale parameters
-
-         localizer.localeCode = function () {
-           return _localeCode;
-         };
-
-         localizer.localeCodes = function () {
-           return _localeCodes;
-         };
-
-         localizer.languageCode = function () {
-           return _languageCode;
-         };
-
-         localizer.textDirection = function () {
-           return _textDirection;
-         };
-
-         localizer.usesMetric = function () {
-           return _usesMetric;
-         };
-
-         localizer.languageNames = function () {
-           return _languageNames;
-         };
-
-         localizer.scriptNames = function () {
-           return _scriptNames;
-         }; // The client app may want to manually set the locale, regardless of the
-         // settings provided by the browser
-
-
-         var _preferredLocaleCodes = [];
-
-         localizer.preferredLocaleCodes = function (codes) {
-           if (!arguments.length) return _preferredLocaleCodes;
-
-           if (typeof codes === 'string') {
-             // be generous and accept delimited strings as input
-             _preferredLocaleCodes = codes.split(/,|;| /gi).filter(Boolean);
-           } else {
-             _preferredLocaleCodes = codes;
-           }
-
-           return localizer;
-         };
-
-         var _loadPromise;
-
-         localizer.ensureLoaded = function () {
-           if (_loadPromise) return _loadPromise;
-           return _loadPromise = Promise.all([// load the list of languages
-           _mainFileFetcher.get('languages'), // load the list of supported locales
-           _mainFileFetcher.get('locales')]).then(function (results) {
-             _dataLanguages = results[0];
-             _dataLocales = results[1];
-           }).then(function () {
-             var requestedLocales = (_preferredLocaleCodes || []). // List of locales preferred by the browser in priority order.
-             concat(utilDetect().browserLocales) // fallback to English since it's the only guaranteed complete language
-             .concat(['en']);
-
-             _localeCodes = localesToUseFrom(requestedLocales); // Run iD in the highest-priority locale; the rest are fallbacks
-
-             _localeCode = _localeCodes[0]; // Will always return the index for `en` if nothing else
-
-             var fullCoverageIndex = _localeCodes.findIndex(function (locale) {
-               return _dataLocales[locale].pct === 1;
-             }); // We only need to load locales up until we find one with full coverage
-
-
-             var loadStringsPromises = _localeCodes.slice(0, fullCoverageIndex + 1).map(function (code) {
-               return localizer.loadLocale(code);
-             });
-
-             return Promise.all(loadStringsPromises);
-           }).then(function () {
-             updateForCurrentLocale();
-           })["catch"](function (err) {
-             return console.error(err);
-           }); // eslint-disable-line
-         }; // Returns the locales from `requestedLocales` supported by iD that we should use
-
-
-         function localesToUseFrom(requestedLocales) {
-           var supportedLocales = _dataLocales;
-           var toUse = [];
-
-           for (var i in requestedLocales) {
-             var locale = requestedLocales[i];
-             if (supportedLocales[locale]) toUse.push(locale);
-
-             if (locale.includes('-')) {
-               // Full locale ('es-ES'), add fallback to the base ('es')
-               var langPart = locale.split('-')[0];
-               if (supportedLocales[langPart]) toUse.push(langPart);
-             }
-           } // remove duplicates
-
-
-           return utilArrayUniq(toUse);
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q3492",
+           nameEn: "Sumatra",
+           aliases: ["ID-SM"],
+           country: "ID",
+           groups: ["035", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["62"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[109.82788, 2.86812], [110.90339, 7.52694], [105.01437, 3.24936], [104.56723, 1.44271], [104.34728, 1.33529], [104.12282, 1.27714], [104.03085, 1.26954], [103.74084, 1.12902], [103.66049, 1.18825], [103.56591, 1.19719], [103.03657, 1.30383], [96.11174, 6.69841], [74.28481, -3.17525], [102.92489, -8.17146], [106.32259, -5.50116], [106.38511, -5.16715], [109.17017, -4.07401], [109.3962, -2.07276], [108.50935, -2.01066], [107.94791, 1.06924], [109.82788, 2.86812]]]]

          }
          }

-
-         function updateForCurrentLocale() {
-           if (!_localeCode) return;
-           _languageCode = _localeCode.split('-')[0];
-           var currentData = _dataLocales[_localeCode] || _dataLocales[_languageCode];
-           var hash = utilStringQs(window.location.hash);
-
-           if (hash.rtl === 'true') {
-             _textDirection = 'rtl';
-           } else if (hash.rtl === 'false') {
-             _textDirection = 'ltr';
-           } else {
-             _textDirection = currentData && currentData.rtl ? 'rtl' : 'ltr';
-           }
-
-           var locale = _localeCode;
-           if (locale.toLowerCase() === 'en-us') locale = 'en';
-           _languageNames = _localeStrings[locale].languageNames;
-           _scriptNames = _localeStrings[locale].scriptNames;
-           _usesMetric = _localeCode.slice(-3).toLowerCase() !== '-us';
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q3757",
+           nameEn: "Java",
+           aliases: ["ID-JW"],
+           country: "ID",
+           groups: ["035", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["62"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[109.17017, -4.07401], [106.38511, -5.16715], [106.32259, -5.50116], [102.92489, -8.17146], [116.22542, -10.49172], [114.39575, -8.2889], [114.42235, -8.09762], [114.92859, -7.49253], [116.33992, -7.56171], [116.58433, -5.30385], [109.17017, -4.07401]]]]

          }
          }

-         /* Locales */
-         // Returns a Promise to load the strings for the requested locale
-
-
-         localizer.loadLocale = function (requested) {
-           if (!_dataLocales) {
-             return Promise.reject('loadLocale called before init');
-           }
-
-           var locale = requested; // US English is the default
-
-           if (locale.toLowerCase() === 'en-us') locale = 'en';
-
-           if (!_dataLocales[locale]) {
-             return Promise.reject("Unsupported locale: ".concat(requested));
-           }
-
-           if (_localeStrings[locale]) {
-             // already loaded
-             return Promise.resolve(locale);
-           }
-
-           var fileMap = _mainFileFetcher.fileMap();
-           var key = "locale_".concat(locale);
-           fileMap[key] = "locales/".concat(locale, ".json");
-           return _mainFileFetcher.get(key).then(function (d) {
-             _localeStrings[locale] = d[locale];
-             return locale;
-           });
-         };
-
-         localizer.pluralRule = function (number) {
-           return pluralRule(number, _localeCode);
-         }; // Returns the plural rule for the given `number` with the given `localeCode`.
-         // One of: `zero`, `one`, `two`, `few`, `many`, `other`
-
-
-         function pluralRule(number, localeCode) {
-           // modern browsers have this functionality built-in
-           var rules = 'Intl' in window && Intl.PluralRules && new Intl.PluralRules(localeCode);
-
-           if (rules) {
-             return rules.select(number);
-           } // fallback to basic one/other, as in English
-
-
-           if (number === 1) return 'one';
-           return 'other';
+       }, {
+         type: "Feature",
+         properties: {
+           wikidata: "Q3795",
+           nameEn: "Kalimantan",
+           aliases: ["ID-KA"],
+           country: "ID",
+           groups: ["Q36117", "035", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["62"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[120.02464, 2.83703], [118.06469, 4.16638], [117.67641, 4.16535], [117.47313, 4.18857], [117.25801, 4.35108], [115.90217, 4.37708], [115.58276, 3.93499], [115.53713, 3.14776], [115.11343, 2.82879], [115.1721, 2.49671], [114.80706, 2.21665], [114.80706, 1.92351], [114.57892, 1.5], [114.03788, 1.44787], [113.64677, 1.23933], [113.01448, 1.42832], [113.021, 1.57819], [112.48648, 1.56516], [112.2127, 1.44135], [112.15679, 1.17004], [111.94553, 1.12016], [111.82846, 0.99349], [111.55434, 0.97864], [111.22979, 1.08326], [110.62374, 0.873], [110.49182, 0.88088], [110.35354, 0.98869], [109.66397, 1.60425], [109.66397, 1.79972], [109.57923, 1.80624], [109.53794, 1.91771], [109.62558, 1.99182], [109.82788, 2.86812], [107.94791, 1.06924], [108.50935, -2.01066], [109.3962, -2.07276], [109.17017, -4.07401], [116.58433, -5.30385], [120.02464, 2.83703]]]]

          }
          }

-         /**
-         * Try to find that string in `locale` or the current `_localeCode` matching
-         * the given `stringId`. If no string can be found in the requested locale,
-         * we'll recurse down all the `_localeCodes` until one is found.
-         *
-         * @param  {string}   stringId      string identifier
-         * @param  {object?}  replacements  token replacements and default string
-         * @param  {string?}  locale        locale to use (defaults to currentLocale)
-         * @return {string?}  localized string
-         */
-
-
-         localizer.tInfo = function (stringId, replacements, locale) {
-           locale = locale || _localeCode;
-           var path = stringId.split('.').map(function (s) {
-             return s.replace(/<TX_DOT>/g, '.');
-           }).reverse();
-           var stringsKey = locale; // US English is the default
-
-           if (stringsKey.toLowerCase() === 'en-us') stringsKey = 'en';
-           var result = _localeStrings[stringsKey];
-
-           while (result !== undefined && path.length) {
-             result = result[path.pop()];
-           }
-
-           if (result !== undefined) {
-             if (replacements) {
-               if (_typeof(result) === 'object' && Object.keys(result).length) {
-                 // If plural forms are provided, dig one level deeper based on the
-                 // first numeric token replacement provided.
-                 var number = Object.values(replacements).find(function (value) {
-                   return typeof value === 'number';
-                 });
-
-                 if (number !== undefined) {
-                   var rule = pluralRule(number, locale);
-
-                   if (result[rule]) {
-                     result = result[rule];
-                   } else {
-                     // We're pretty sure this should be a plural but no string
-                     // could be found for the given rule. Just pick the first
-                     // string and hope it makes sense.
-                     result = Object.values(result)[0];
-                   }
-                 }
-               }
-
-               if (typeof result === 'string') {
-                 for (var key in replacements) {
-                   var value = replacements[key];
-
-                   if (typeof value === 'number' && value.toLocaleString) {
-                     // format numbers for the locale
-                     value = value.toLocaleString(locale, {
-                       style: 'decimal',
-                       useGrouping: true,
-                       minimumFractionDigits: 0
-                     });
-                   }
-
-                   var token = "{".concat(key, "}");
-                   var regex = new RegExp(token, 'g');
-                   result = result.replace(regex, value);
-                 }
-               }
-             }
-
-             if (typeof result === 'string') {
-               // found a localized string!
-               return {
-                 text: result,
-                 locale: locale
-               };
-             }
-           } // no localized string found...
-           // attempt to fallback to a lower-priority language
-
-
-           var index = _localeCodes.indexOf(locale);
-
-           if (index >= 0 && index < _localeCodes.length - 1) {
-             // eventually this will be 'en' or another locale with 100% coverage
-             var fallback = _localeCodes[index + 1];
-             return localizer.tInfo(stringId, replacements, fallback);
-           }
-
-           if (replacements && 'default' in replacements) {
-             // Fallback to a default value if one is specified in `replacements`
-             return {
-               text: replacements["default"],
-               locale: null
-             };
-           }
-
-           var missing = "Missing ".concat(locale, " translation: ").concat(stringId);
-           if (typeof console !== 'undefined') console.error(missing); // eslint-disable-line
-
-           return {
-             text: missing,
-             locale: 'en'
-           };
-         }; // Returns only the localized text, discarding the locale info
-
-
-         localizer.t = function (stringId, replacements, locale) {
-           return localizer.tInfo(stringId, replacements, locale).text;
-         }; // Returns the localized text wrapped in an HTML element encoding the locale info
-
-
-         localizer.t.html = function (stringId, replacements, locale) {
-           var info = localizer.tInfo(stringId, replacements, locale); // text may be empty or undefined if `replacements.default` is
-
-           return info.text ? localizer.htmlForLocalizedText(info.text, info.locale) : '';
-         };
-
-         localizer.htmlForLocalizedText = function (text, localeCode) {
-           return "<span class=\"localized-text\" lang=\"".concat(localeCode || 'unknown', "\">").concat(text, "</span>");
-         };
-
-         localizer.languageName = function (code, options) {
-           if (_languageNames[code]) {
-             // name in locale language
-             // e.g. "German"
-             return _languageNames[code];
-           } // sometimes we only want the local name
-
-
-           if (options && options.localOnly) return null;
-           var langInfo = _dataLanguages[code];
-
-           if (langInfo) {
-             if (langInfo.nativeName) {
-               // name in native language
-               // e.g. "Deutsch (de)"
-               return localizer.t('translate.language_and_code', {
-                 language: langInfo.nativeName,
-                 code: code
-               });
-             } else if (langInfo.base && langInfo.script) {
-               var base = langInfo.base; // the code of the language this is based on
-
-               if (_languageNames[base]) {
-                 // base language name in locale language
-                 var scriptCode = langInfo.script;
-                 var script = _scriptNames[scriptCode] || scriptCode; // e.g. "Serbian (Cyrillic)"
-
-                 return localizer.t('translate.language_and_code', {
-                   language: _languageNames[base],
-                   code: script
-                 });
-               } else if (_dataLanguages[base] && _dataLanguages[base].nativeName) {
-                 // e.g. "српски (sr-Cyrl)"
-                 return localizer.t('translate.language_and_code', {
-                   language: _dataLanguages[base].nativeName,
-                   code: code
-                 });
-               }
-             }
-           }
-
-           return code; // if not found, use the code
-         };
-
-         return localizer;
-       }
-
-       // `presetCollection` is a wrapper around an `Array` of presets `collection`,
-       // and decorated with some extra methods for searching and matching geometry
-       //
-
-       function presetCollection(collection) {
-         var MAXRESULTS = 50;
-         var _this = {};
-         var _memo = {};
-         _this.collection = collection;
-
-         _this.item = function (id) {
-           if (_memo[id]) return _memo[id];
-
-           var found = _this.collection.find(function (d) {
-             return d.id === id;
-           });
-
-           if (found) _memo[id] = found;
-           return found;
-         };
-
-         _this.index = function (id) {
-           return _this.collection.findIndex(function (d) {
-             return d.id === id;
-           });
-         };
-
-         _this.matchGeometry = function (geometry) {
-           return presetCollection(_this.collection.filter(function (d) {
-             return d.matchGeometry(geometry);
-           }));
-         };
-
-         _this.matchAllGeometry = function (geometries) {
-           return presetCollection(_this.collection.filter(function (d) {
-             return d && d.matchAllGeometry(geometries);
-           }));
-         };
-
-         _this.matchAnyGeometry = function (geometries) {
-           return presetCollection(_this.collection.filter(function (d) {
-             return geometries.some(function (geom) {
-               return d.matchGeometry(geom);
-             });
-           }));
-         };
-
-         _this.fallback = function (geometry) {
-           var id = geometry;
-           if (id === 'vertex') id = 'point';
-           return _this.item(id);
-         };
-
-         _this.search = function (value, geometry, countryCode) {
-           if (!value) return _this;
-           value = value.toLowerCase().trim(); // match at name beginning or just after a space (e.g. "office" -> match "Law Office")
-
-           function leading(a) {
-             var index = a.indexOf(value);
-             return index === 0 || a[index - 1] === ' ';
-           } // match at name beginning only
-
-
-           function leadingStrict(a) {
-             var index = a.indexOf(value);
-             return index === 0;
-           }
-
-           function sortNames(a, b) {
-             var aCompare = (a.suggestion ? a.originalName : a.name()).toLowerCase();
-             var bCompare = (b.suggestion ? b.originalName : b.name()).toLowerCase(); // priority if search string matches preset name exactly - #4325
-
-             if (value === aCompare) return -1;
-             if (value === bCompare) return 1; // priority for higher matchScore
-
-             var i = b.originalScore - a.originalScore;
-             if (i !== 0) return i; // priority if search string appears earlier in preset name
-
-             i = aCompare.indexOf(value) - bCompare.indexOf(value);
-             if (i !== 0) return i; // priority for shorter preset names
-
-             return aCompare.length - bCompare.length;
-           }
-
-           var pool = _this.collection;
-
-           if (countryCode) {
-             pool = pool.filter(function (a) {
-               if (a.countryCodes && a.countryCodes.indexOf(countryCode) === -1) return false;
-               if (a.notCountryCodes && a.notCountryCodes.indexOf(countryCode) !== -1) return false;
-               return true;
-             });
-           }
-
-           var searchable = pool.filter(function (a) {
-             return a.searchable !== false && a.suggestion !== true;
-           });
-           var suggestions = pool.filter(function (a) {
-             return a.suggestion === true;
-           }); // matches value to preset.name
-
-           var leading_name = searchable.filter(function (a) {
-             return leading(a.name().toLowerCase());
-           }).sort(sortNames); // matches value to preset suggestion name (original name is unhyphenated)
-
-           var leading_suggestions = suggestions.filter(function (a) {
-             return leadingStrict(a.originalName.toLowerCase());
-           }).sort(sortNames); // matches value to preset.terms values
-
-           var leading_terms = searchable.filter(function (a) {
-             return (a.terms() || []).some(leading);
-           }); // matches value to preset.tags values
-
-           var leading_tag_values = searchable.filter(function (a) {
-             return Object.values(a.tags || {}).filter(function (val) {
-               return val !== '*';
-             }).some(leading);
-           }); // finds close matches to value in preset.name
-
-           var similar_name = searchable.map(function (a) {
-             return {
-               preset: a,
-               dist: utilEditDistance(value, a.name())
-             };
-           }).filter(function (a) {
-             return a.dist + Math.min(value.length - a.preset.name().length, 0) < 3;
-           }).sort(function (a, b) {
-             return a.dist - b.dist;
-           }).map(function (a) {
-             return a.preset;
-           }); // finds close matches to value to preset suggestion name (original name is unhyphenated)
-
-           var similar_suggestions = suggestions.map(function (a) {
-             return {
-               preset: a,
-               dist: utilEditDistance(value, a.originalName.toLowerCase())
-             };
-           }).filter(function (a) {
-             return a.dist + Math.min(value.length - a.preset.originalName.length, 0) < 1;
-           }).sort(function (a, b) {
-             return a.dist - b.dist;
-           }).map(function (a) {
-             return a.preset;
-           }); // finds close matches to value in preset.terms
-
-           var similar_terms = searchable.filter(function (a) {
-             return (a.terms() || []).some(function (b) {
-               return utilEditDistance(value, b) + Math.min(value.length - b.length, 0) < 3;
-             });
-           });
-           var results = leading_name.concat(leading_suggestions, leading_terms, leading_tag_values, similar_name, similar_suggestions, similar_terms).slice(0, MAXRESULTS - 1);
-
-           if (geometry) {
-             if (typeof geometry === 'string') {
-               results.push(_this.fallback(geometry));
-             } else {
-               geometry.forEach(function (geom) {
-                 return results.push(_this.fallback(geom));
-               });
-             }
-           }
-
-           return presetCollection(utilArrayUniq(results));
-         };
-
-         return _this;
-       }
-
-       // `presetCategory` builds a `presetCollection` of member presets,
-       // decorated with some extra methods for searching and matching geometry
-       //
-
-       function presetCategory(categoryID, category, all) {
-         var _this = Object.assign({}, category); // shallow copy
-
-
-         _this.id = categoryID;
-         _this.members = presetCollection(category.members.map(function (presetID) {
-           return all.item(presetID);
-         }).filter(Boolean));
-         _this.geometry = _this.members.collection.reduce(function (acc, preset) {
-           for (var i in preset.geometry) {
-             var geometry = preset.geometry[i];
-
-             if (acc.indexOf(geometry) === -1) {
-               acc.push(geometry);
-             }
-           }
-
-           return acc;
-         }, []);
-
-         _this.matchGeometry = function (geom) {
-           return _this.geometry.indexOf(geom) >= 0;
-         };
-
-         _this.matchAllGeometry = function (geometries) {
-           return _this.members.collection.some(function (preset) {
-             return preset.matchAllGeometry(geometries);
-           });
-         };
-
-         _this.matchScore = function () {
-           return -1;
-         };
-
-         _this.name = function () {
-           return _t("presets.categories.".concat(categoryID, ".name"), {
-             'default': categoryID
-           });
-         };
-
-         _this.nameLabel = function () {
-           return _t.html("presets.categories.".concat(categoryID, ".name"), {
-             'default': categoryID
-           });
-         };
-
-         _this.terms = function () {
-           return [];
-         };
-
-         return _this;
-       }
-
-       // `presetField` decorates a given `field` Object
-       // with some extra methods for searching and matching geometry
-       //
-
-       function presetField(fieldID, field) {
-         var _this = Object.assign({}, field); // shallow copy
-
-
-         _this.id = fieldID; // for use in classes, element ids, css selectors
-
-         _this.safeid = utilSafeClassName(fieldID);
-
-         _this.matchGeometry = function (geom) {
-           return !_this.geometry || _this.geometry.indexOf(geom) !== -1;
-         };
-
-         _this.matchAllGeometry = function (geometries) {
-           return !_this.geometry || geometries.every(function (geom) {
-             return _this.geometry.indexOf(geom) !== -1;
-           });
-         };
-
-         _this.t = function (scope, options) {
-           return _t("presets.fields.".concat(fieldID, ".").concat(scope), options);
-         };
-
-         _this.t.html = function (scope, options) {
-           return _t.html("presets.fields.".concat(fieldID, ".").concat(scope), options);
-         };
-
-         _this.title = function () {
-           return _this.overrideLabel || _this.t('label', {
-             'default': fieldID
-           });
-         };
-
-         _this.label = function () {
-           return _this.overrideLabel || _this.t.html('label', {
-             'default': fieldID
-           });
-         };
-
-         var _placeholder = _this.placeholder;
-
-         _this.placeholder = function () {
-           return _this.t('placeholder', {
-             'default': _placeholder
-           });
-         };
-
-         _this.originalTerms = (_this.terms || []).join();
-
-         _this.terms = function () {
-           return _this.t('terms', {
-             'default': _this.originalTerms
-           }).toLowerCase().trim().split(/\s*,+\s*/);
-         };
-
-         _this.increment = _this.type === 'number' ? _this.increment || 1 : undefined;
-         return _this;
-       }
-
-       // `Array.prototype.lastIndexOf` method
-       // https://tc39.github.io/ecma262/#sec-array.prototype.lastindexof
-       _export({ target: 'Array', proto: true, forced: arrayLastIndexOf !== [].lastIndexOf }, {
-         lastIndexOf: arrayLastIndexOf
-       });
-
-       // `presetPreset` decorates a given `preset` Object
-       // with some extra methods for searching and matching geometry
-       //
-
-       function presetPreset(presetID, preset, addable, allFields, allPresets) {
-         allFields = allFields || {};
-         allPresets = allPresets || {};
-
-         var _this = Object.assign({}, preset); // shallow copy
-
-
-         var _addable = addable || false;
-
-         var _resolvedFields; // cache
-
-
-         var _resolvedMoreFields; // cache
-
-
-         _this.id = presetID;
-         _this.safeid = utilSafeClassName(presetID); // for use in css classes, selectors, element ids
-
-         _this.originalTerms = (_this.terms || []).join();
-         _this.originalName = _this.name || '';
-         _this.originalScore = _this.matchScore || 1;
-         _this.originalReference = _this.reference || {};
-         _this.originalFields = _this.fields || [];
-         _this.originalMoreFields = _this.moreFields || [];
-
-         _this.fields = function () {
-           return _resolvedFields || (_resolvedFields = resolve('fields'));
-         };
-
-         _this.moreFields = function () {
-           return _resolvedMoreFields || (_resolvedMoreFields = resolve('moreFields'));
-         };
-
-         _this.resetFields = function () {
-           return _resolvedFields = _resolvedMoreFields = null;
-         };
-
-         _this.tags = _this.tags || {};
-         _this.addTags = _this.addTags || _this.tags;
-         _this.removeTags = _this.removeTags || _this.addTags;
-         _this.geometry = _this.geometry || [];
-
-         _this.matchGeometry = function (geom) {
-           return _this.geometry.indexOf(geom) >= 0;
-         };
-
-         _this.matchAllGeometry = function (geoms) {
-           return geoms.every(_this.matchGeometry);
-         };
-
-         _this.matchScore = function (entityTags) {
-           var tags = _this.tags;
-           var seen = {};
-           var score = 0; // match on tags
-
-           for (var k in tags) {
-             seen[k] = true;
-
-             if (entityTags[k] === tags[k]) {
-               score += _this.originalScore;
-             } else if (tags[k] === '*' && k in entityTags) {
-               score += _this.originalScore / 2;
-             } else {
-               return -1;
-             }
-           } // boost score for additional matches in addTags - #6802
-
-
-           var addTags = _this.addTags;
-
-           for (var _k in addTags) {
-             if (!seen[_k] && entityTags[_k] === addTags[_k]) {
-               score += _this.originalScore;
-             }
-           }
-
-           return score;
-         };
-
-         _this.t = function (scope, options) {
-           var textID = "presets.presets.".concat(presetID, ".").concat(scope);
-           return _t(textID, options);
-         };
-
-         _this.t.html = function (scope, options) {
-           var textID = "presets.presets.".concat(presetID, ".").concat(scope);
-           return _t.html(textID, options);
-         };
-
-         _this.name = function () {
-           return _this.t('name', {
-             'default': _this.originalName
-           });
-         };
-
-         _this.nameLabel = function () {
-           return _this.t.html('name', {
-             'default': _this.originalName
-           });
-         };
-
-         _this.subtitle = function () {
-           if (_this.suggestion) {
-             var path = presetID.split('/');
-             path.pop(); // remove brand name
-
-             return _t('presets.presets.' + path.join('/') + '.name');
-           }
-
-           return null;
-         };
-
-         _this.subtitleLabel = function () {
-           if (_this.suggestion) {
-             var path = presetID.split('/');
-             path.pop(); // remove brand name
-
-             return _t.html('presets.presets.' + path.join('/') + '.name');
-           }
-
-           return null;
-         };
-
-         _this.terms = function () {
-           return _this.t('terms', {
-             'default': _this.originalTerms
-           }).toLowerCase().trim().split(/\s*,+\s*/);
-         };
-
-         _this.isFallback = function () {
-           var tagCount = Object.keys(_this.tags).length;
-           return tagCount === 0 || tagCount === 1 && _this.tags.hasOwnProperty('area');
-         };
-
-         _this.addable = function (val) {
-           if (!arguments.length) return _addable;
-           _addable = val;
-           return _this;
-         };
-
-         _this.reference = function () {
-           // Lookup documentation on Wikidata...
-           var qid = _this.tags.wikidata || _this.tags['brand:wikidata'] || _this.tags['operator:wikidata'];
-
-           if (qid) {
-             return {
-               qid: qid
-             };
-           } // Lookup documentation on OSM Wikibase...
-
-
-           var key = _this.originalReference.key || Object.keys(utilObjectOmit(_this.tags, 'name'))[0];
-           var value = _this.originalReference.value || _this.tags[key];
-
-           if (value === '*') {
-             return {
-               key: key
-             };
-           } else {
-             return {
-               key: key,
-               value: value
-             };
-           }
-         };
-
-         _this.unsetTags = function (tags, geometry, skipFieldDefaults) {
-           tags = utilObjectOmit(tags, Object.keys(_this.removeTags));
-
-           if (geometry && !skipFieldDefaults) {
-             _this.fields().forEach(function (field) {
-               if (field.matchGeometry(geometry) && field.key && field["default"] === tags[field.key]) {
-                 delete tags[field.key];
-               }
-             });
-           }
-
-           delete tags.area;
-           return tags;
-         };
-
-         _this.setTags = function (tags, geometry, skipFieldDefaults) {
-           var addTags = _this.addTags;
-           tags = Object.assign({}, tags); // shallow copy
-
-           for (var k in addTags) {
-             if (addTags[k] === '*') {
-               tags[k] = 'yes';
-             } else {
-               tags[k] = addTags[k];
-             }
-           } // Add area=yes if necessary.
-           // This is necessary if the geometry is already an area (e.g. user drew an area) AND any of:
-           // 1. chosen preset could be either an area or a line (`barrier=city_wall`)
-           // 2. chosen preset doesn't have a key in osmAreaKeys (`railway=station`)
-
-
-           if (!addTags.hasOwnProperty('area')) {
-             delete tags.area;
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-             if (geometry === 'area') {
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-                     needsAreaTag = false;
-                     break;
-                   }
-                 }
-               }
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-               if (needsAreaTag) {
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-             }
-           }
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-           if (geometry && !skipFieldDefaults) {
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-               }
-             });
-           }
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-           return tags;
-         }; // For a preset without fields, use the fields of the parent preset.
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-
-         function resolve(which) {
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-             }
-           }); // no fields resolved, so use the parent's if possible
-
-           if (!resolved.length) {
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-
-             var parentID = endIndex && _this.id.substring(0, endIndex);
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-             if (parentID) {
-               resolved = inheritFields(parentID, which);
-             }
-           }
-
-           return utilArrayUniq(resolved); // returns an array of fields to inherit from the given presetID, if found
-
-           function inheritFields(presetID, which) {
-             var parent = allPresets[presetID];
-             if (!parent) return [];
-
-             if (which === 'fields') {
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-             }
-           } // Skip `fields` for the keys which define the preset.
-           // These are usually `typeCombo` fields like `shop=*`
-
-
-           function shouldInherit(f) {
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-             f.type !== 'multiCombo' && f.type !== 'semiCombo' && f.type !== 'manyCombo' && f.type !== 'check') return false;
-             return true;
-           }
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+       }, {
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+           nameEn: "Maluku Islands",
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+           callingCodes: ["62"]
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+       }, {
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+       }, {
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          }
          }

-
-         return _this;
-       }
-
-       var _mainPresetIndex = presetIndex(); // singleton
-       // `presetIndex` wraps a `presetCollection`
-       // with methods for loading new data and returning defaults
-       //
-
-       function presetIndex() {
-         var dispatch$1 = dispatch('favoritePreset', 'recentsChange');
-         var MAXRECENTS = 30; // seed the preset lists with geometry fallbacks
-
-         var POINT = presetPreset('point', {
-           name: 'Point',
-           tags: {},
-           geometry: ['point', 'vertex'],
-           matchScore: 0.1
-         });
-         var LINE = presetPreset('line', {
-           name: 'Line',
-           tags: {},
-           geometry: ['line'],
-           matchScore: 0.1
-         });
-         var AREA = presetPreset('area', {
-           name: 'Area',
-           tags: {
-             area: 'yes'
-           },
-           geometry: ['area'],
-           matchScore: 0.1
-         });
-         var RELATION = presetPreset('relation', {
-           name: 'Relation',
-           tags: {},
-           geometry: ['relation'],
-           matchScore: 0.1
-         });
-
-         var _this = presetCollection([POINT, LINE, AREA, RELATION]);
-
-         var _presets = {
-           point: POINT,
-           line: LINE,
-           area: AREA,
-           relation: RELATION
-         };
-         var _defaults = {
-           point: presetCollection([POINT]),
-           vertex: presetCollection([POINT]),
-           line: presetCollection([LINE]),
-           area: presetCollection([AREA]),
-           relation: presetCollection([RELATION])
-         };
-         var _fields = {};
-         var _categories = {};
-         var _universal = [];
-         var _addablePresetIDs = null; // Set of preset IDs that the user can add
-
-         var _recents;
-
-         var _favorites; // Index of presets by (geometry, tag key).
-
-
-         var _geometryIndex = {
-           point: {},
-           vertex: {},
-           line: {},
-           area: {},
-           relation: {}
-         };
-
-         var _loadPromise;
-
-         _this.ensureLoaded = function () {
-           if (_loadPromise) return _loadPromise;
-           return _loadPromise = Promise.all([_mainFileFetcher.get('preset_categories'), _mainFileFetcher.get('preset_defaults'), _mainFileFetcher.get('preset_presets'), _mainFileFetcher.get('preset_fields')]).then(function (vals) {
-             _this.merge({
-               categories: vals[0],
-               defaults: vals[1],
-               presets: vals[2],
-               fields: vals[3]
-             });
-
-             osmSetAreaKeys(_this.areaKeys());
-             osmSetPointTags(_this.pointTags());
-             osmSetVertexTags(_this.vertexTags());
-           });
-         };
-
-         _this.merge = function (d) {
-           // Merge Fields
-           if (d.fields) {
-             Object.keys(d.fields).forEach(function (fieldID) {
-               var f = d.fields[fieldID];
-
-               if (f) {
-                 // add or replace
-                 _fields[fieldID] = presetField(fieldID, f);
-               } else {
-                 // remove
-                 delete _fields[fieldID];
-               }
-             });
-           } // Merge Presets
-
-
-           if (d.presets) {
-             Object.keys(d.presets).forEach(function (presetID) {
-               var p = d.presets[presetID];
-
-               if (p) {
-                 // add or replace
-                 var isAddable = !_addablePresetIDs || _addablePresetIDs.has(presetID);
-
-                 _presets[presetID] = presetPreset(presetID, p, isAddable, _fields, _presets);
-               } else {
-                 // remove (but not if it's a fallback)
-                 var existing = _presets[presetID];
-
-                 if (existing && !existing.isFallback()) {
-                   delete _presets[presetID];
-                 }
-               }
-             });
-           } // Need to rebuild _this.collection before loading categories
-
-
-           _this.collection = Object.values(_presets).concat(Object.values(_categories)); // Merge Categories
-
-           if (d.categories) {
-             Object.keys(d.categories).forEach(function (categoryID) {
-               var c = d.categories[categoryID];
-
-               if (c) {
-                 // add or replace
-                 _categories[categoryID] = presetCategory(categoryID, c, _this);
-               } else {
-                 // remove
-                 delete _categories[categoryID];
-               }
-             });
-           } // Rebuild _this.collection after loading categories
-
-
-           _this.collection = Object.values(_presets).concat(Object.values(_categories)); // Merge Defaults
-
-           if (d.defaults) {
-             Object.keys(d.defaults).forEach(function (geometry) {
-               var def = d.defaults[geometry];
-
-               if (Array.isArray(def)) {
-                 // add or replace
-                 _defaults[geometry] = presetCollection(def.map(function (id) {
-                   return _presets[id] || _categories[id];
-                 }).filter(Boolean));
-               } else {
-                 // remove
-                 delete _defaults[geometry];
-               }
-             });
-           } // Rebuild universal fields array
-
-
-           _universal = Object.values(_fields).filter(function (field) {
-             return field.universal;
-           }); // Reset all the preset fields - they'll need to be resolved again
-
-           Object.values(_presets).forEach(function (preset) {
-             return preset.resetFields();
-           }); // Rebuild geometry index
-
-           _geometryIndex = {
-             point: {},
-             vertex: {},
-             line: {},
-             area: {},
-             relation: {}
-           };
-
-           _this.collection.forEach(function (preset) {
-             (preset.geometry || []).forEach(function (geometry) {
-               var g = _geometryIndex[geometry];
-
-               for (var key in preset.tags) {
-                 (g[key] = g[key] || []).push(preset);
-               }
-             });
-           });
-
-           return _this;
-         };
-
-         _this.match = function (entity, resolver) {
-           return resolver["transient"](entity, 'presetMatch', function () {
-             var geometry = entity.geometry(resolver); // Treat entities on addr:interpolation lines as points, not vertices - #3241
-
-             if (geometry === 'vertex' && entity.isOnAddressLine(resolver)) {
-               geometry = 'point';
-             }
-
-             return _this.matchTags(entity.tags, geometry);
-           });
-         };
-
-         _this.matchTags = function (tags, geometry) {
-           var geometryMatches = _geometryIndex[geometry];
-           var address;
-           var best = -1;
-           var match;
-
-           for (var k in tags) {
-             // If any part of an address is present, allow fallback to "Address" preset - #4353
-             if (/^addr:/.test(k) && geometryMatches['addr:*']) {
-               address = geometryMatches['addr:*'][0];
-             }
-
-             var keyMatches = geometryMatches[k];
-             if (!keyMatches) continue;
-
-             for (var i = 0; i < keyMatches.length; i++) {
-               var score = keyMatches[i].matchScore(tags);
-
-               if (score > best) {
-                 best = score;
-                 match = keyMatches[i];
-               }
-             }
-           }
-
-           if (address && (!match || match.isFallback())) {
-             match = address;
-           }
-
-           return match || _this.fallback(geometry);
-         };
-
-         _this.allowsVertex = function (entity, resolver) {
-           if (entity.type !== 'node') return false;
-           if (Object.keys(entity.tags).length === 0) return true;
-           return resolver["transient"](entity, 'vertexMatch', function () {
-             // address lines allow vertices to act as standalone points
-             if (entity.isOnAddressLine(resolver)) return true;
-             var geometries = osmNodeGeometriesForTags(entity.tags);
-             if (geometries.vertex) return true;
-             if (geometries.point) return false; // allow vertices for unspecified points
-
-             return true;
-           });
-         }; // Because of the open nature of tagging, iD will never have a complete
-         // list of tags used in OSM, so we want it to have logic like "assume
-         // that a closed way with an amenity tag is an area, unless the amenity
-         // is one of these specific types". This function computes a structure
-         // that allows testing of such conditions, based on the presets designated
-         // as as supporting (or not supporting) the area geometry.
-         //
-         // The returned object L is a keeplist/discardlist of tags. A closed way
-         // with a tag (k, v) is considered to be an area if `k in L && !(v in L[k])`
-         // (see `Way#isArea()`). In other words, the keys of L form the keeplist,
-         // and the subkeys form the discardlist.
-
-
-         _this.areaKeys = function () {
-           // The ignore list is for keys that imply lines. (We always add `area=yes` for exceptions)
-           var ignore = ['barrier', 'highway', 'footway', 'railway', 'junction', 'type'];
-           var areaKeys = {}; // ignore name-suggestion-index and deprecated presets
-
-           var presets = _this.collection.filter(function (p) {
-             return !p.suggestion && !p.replacement;
-           }); // keeplist
-
-
-           presets.forEach(function (p) {
-             var keys = p.tags && Object.keys(p.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
-
-             if (!key) return;
-             if (ignore.indexOf(key) !== -1) return;
-
-             if (p.geometry.indexOf('area') !== -1) {
-               // probably an area..
-               areaKeys[key] = areaKeys[key] || {};
-             }
-           }); // discardlist
-
-           presets.forEach(function (p) {
-             var key;
-
-             for (key in p.addTags) {
-               // examine all addTags to get a better sense of what can be tagged on lines - #6800
-               var value = p.addTags[key];
-
-               if (key in areaKeys && // probably an area...
-               p.geometry.indexOf('line') !== -1 && // but sometimes a line
-               value !== '*') {
-                 areaKeys[key][value] = true;
-               }
-             }
-           });
-           return areaKeys;
-         };
-
-         _this.pointTags = function () {
-           return _this.collection.reduce(function (pointTags, d) {
-             // ignore name-suggestion-index, deprecated, and generic presets
-             if (d.suggestion || d.replacement || d.searchable === false) return pointTags; // only care about the primary tag
-
-             var keys = d.tags && Object.keys(d.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
-
-             if (!key) return pointTags; // if this can be a point
-
-             if (d.geometry.indexOf('point') !== -1) {
-               pointTags[key] = pointTags[key] || {};
-               pointTags[key][d.tags[key]] = true;
-             }
-
-             return pointTags;
-           }, {});
-         };
-
-         _this.vertexTags = function () {
-           return _this.collection.reduce(function (vertexTags, d) {
-             // ignore name-suggestion-index, deprecated, and generic presets
-             if (d.suggestion || d.replacement || d.searchable === false) return vertexTags; // only care about the primary tag
-
-             var keys = d.tags && Object.keys(d.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
-
-             if (!key) return vertexTags; // if this can be a vertex
-
-             if (d.geometry.indexOf('vertex') !== -1) {
-               vertexTags[key] = vertexTags[key] || {};
-               vertexTags[key][d.tags[key]] = true;
-             }
-
-             return vertexTags;
-           }, {});
-         };
-
-         _this.field = function (id) {
-           return _fields[id];
-         };
-
-         _this.universal = function () {
-           return _universal;
-         };
-
-         _this.defaults = function (geometry, n, startWithRecents) {
-           var recents = [];
-
-           if (startWithRecents) {
-             recents = _this.recent().matchGeometry(geometry).collection.slice(0, 4);
-           }
-
-           var defaults;
-
-           if (_addablePresetIDs) {
-             defaults = Array.from(_addablePresetIDs).map(function (id) {
-               var preset = _this.item(id);
-
-               if (preset && preset.matchGeometry(geometry)) return preset;
-               return null;
-             }).filter(Boolean);
-           } else {
-             defaults = _defaults[geometry].collection.concat(_this.fallback(geometry));
-           }
-
-           return presetCollection(utilArrayUniq(recents.concat(defaults)).slice(0, n - 1));
-         }; // pass a Set of addable preset ids
-
-
-         _this.addablePresetIDs = function (val) {
-           if (!arguments.length) return _addablePresetIDs; // accept and convert arrays
-
-           if (Array.isArray(val)) val = new Set(val);
-           _addablePresetIDs = val;
-
-           if (_addablePresetIDs) {
-             // reset all presets
-             _this.collection.forEach(function (p) {
-               // categories aren't addable
-               if (p.addable) p.addable(_addablePresetIDs.has(p.id));
-             });
-           } else {
-             _this.collection.forEach(function (p) {
-               if (p.addable) p.addable(true);
-             });
-           }
-
-           return _this;
-         };
-
-         _this.recent = function () {
-           return presetCollection(utilArrayUniq(_this.getRecents().map(function (d) {
-             return d.preset;
-           })));
-         };
-
-         function RibbonItem(preset, source) {
-           var item = {};
-           item.preset = preset;
-           item.source = source;
-
-           item.isFavorite = function () {
-             return item.source === 'favorite';
-           };
-
-           item.isRecent = function () {
-             return item.source === 'recent';
-           };
-
-           item.matches = function (preset) {
-             return item.preset.id === preset.id;
-           };
-
-           item.minified = function () {
-             return {
-               pID: item.preset.id
-             };
-           };
-
-           return item;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IL",
+           iso1A3: "ISR",
+           iso1N3: "376",
+           wikidata: "Q801",
+           nameEn: "Israel",
+           groups: ["145", "142", "UN"],
+           callingCodes: ["972"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[34.052, 31.46619], [34.29262, 31.70393], [34.48681, 31.59711], [34.56797, 31.54197], [34.48892, 31.48365], [34.40077, 31.40926], [34.36505, 31.36404], [34.37381, 31.30598], [34.36523, 31.28963], [34.29417, 31.24194], [34.26742, 31.21998], [34.92298, 29.45305], [34.97718, 29.54294], [34.98207, 29.58147], [35.02147, 29.66343], [35.14108, 30.07374], [35.19183, 30.34636], [35.16218, 30.43535], [35.19595, 30.50297], [35.21379, 30.60401], [35.29311, 30.71365], [35.33456, 30.81224], [35.33984, 30.8802], [35.41371, 30.95565], [35.43658, 31.12444], [35.40316, 31.25535], [35.47672, 31.49578], [35.39675, 31.49572], [35.22921, 31.37445], [35.13033, 31.3551], [35.02459, 31.35979], [34.92571, 31.34337], [34.88932, 31.37093], [34.87833, 31.39321], [34.89756, 31.43891], [34.93258, 31.47816], [34.94356, 31.50743], [34.9415, 31.55601], [34.95249, 31.59813], [35.00879, 31.65426], [35.08226, 31.69107], [35.10782, 31.71594], [35.11895, 31.71454], [35.12933, 31.7325], [35.13931, 31.73012], [35.15119, 31.73634], [35.15474, 31.73352], [35.16478, 31.73242], [35.18023, 31.72067], [35.20538, 31.72388], [35.21937, 31.71578], [35.22392, 31.71899], [35.23972, 31.70896], [35.24315, 31.71244], [35.2438, 31.7201], [35.24981, 31.72543], [35.25182, 31.73945], [35.26319, 31.74846], [35.25225, 31.7678], [35.26058, 31.79064], [35.25573, 31.81362], [35.26404, 31.82567], [35.251, 31.83085], [35.25753, 31.8387], [35.24816, 31.8458], [35.2304, 31.84222], [35.2249, 31.85433], [35.22817, 31.8638], [35.22567, 31.86745], [35.22294, 31.87889], [35.22014, 31.88264], [35.2136, 31.88241], [35.21276, 31.88153], [35.21016, 31.88237], [35.20945, 31.8815], [35.20791, 31.8821], [35.20673, 31.88151], [35.20381, 31.86716], [35.21128, 31.863], [35.216, 31.83894], [35.21469, 31.81835], [35.19461, 31.82687], [35.18169, 31.82542], [35.18603, 31.80901], [35.14174, 31.81325], [35.07677, 31.85627], [35.05617, 31.85685], [35.01978, 31.82944], [34.9724, 31.83352], [34.99712, 31.85569], [35.03489, 31.85919], [35.03978, 31.89276], [35.03489, 31.92448], [35.00124, 31.93264], [34.98682, 31.96935], [35.00261, 32.027], [34.9863, 32.09551], [34.99437, 32.10962], [34.98507, 32.12606], [34.99039, 32.14626], [34.96009, 32.17503], [34.95703, 32.19522], [34.98885, 32.20758], [35.01841, 32.23981], [35.02939, 32.2671], [35.01119, 32.28684], [35.01772, 32.33863], [35.04243, 32.35008], [35.05142, 32.3667], [35.0421, 32.38242], [35.05311, 32.4024], [35.05423, 32.41754], [35.07059, 32.4585], [35.08564, 32.46948], [35.09236, 32.47614], [35.10024, 32.47856], [35.10882, 32.4757], [35.15937, 32.50466], [35.2244, 32.55289], [35.25049, 32.52453], [35.29306, 32.50947], [35.30685, 32.51024], [35.35212, 32.52047], [35.40224, 32.50136], [35.42034, 32.46009], [35.41598, 32.45593], [35.41048, 32.43706], [35.42078, 32.41562], [35.55807, 32.38674], [35.55494, 32.42687], [35.57485, 32.48669], [35.56614, 32.64393], [35.59813, 32.65159], [35.61669, 32.67999], [35.66527, 32.681], [35.68467, 32.70715], [35.75983, 32.74803], [35.78745, 32.77938], [35.83758, 32.82817], [35.84021, 32.8725], [35.87012, 32.91976], [35.89298, 32.9456], [35.87188, 32.98028], [35.84802, 33.1031], [35.81911, 33.11077], [35.81911, 33.1336], [35.84285, 33.16673], [35.83846, 33.19397], [35.81647, 33.2028], [35.81295, 33.24841], [35.77513, 33.27342], [35.813, 33.3172], [35.77477, 33.33609], [35.62019, 33.27278], [35.62283, 33.24226], [35.58502, 33.26653], [35.58326, 33.28381], [35.56523, 33.28969], [35.55555, 33.25844], [35.54544, 33.25513], [35.54808, 33.236], [35.5362, 33.23196], [35.54228, 33.19865], [35.52573, 33.11921], [35.50335, 33.114], [35.50272, 33.09056], [35.448, 33.09264], [35.43059, 33.06659], [35.35223, 33.05617], [35.31429, 33.10515], [35.1924, 33.08743], [35.10645, 33.09318], [34.78515, 33.20368], [33.62659, 31.82938], [34.052, 31.46619]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IM",
+           iso1A3: "IMN",
+           iso1N3: "833",
+           wikidata: "Q9676",
+           nameEn: "Isle of Man",
+           country: "GB",
+           groups: ["Q185086", "154", "150", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["44 01624", "44 07624", "44 07524", "44 07924"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-3.98763, 54.07351], [-4.1819, 54.57861], [-5.6384, 53.81157], [-3.98763, 54.07351]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IN",
+           iso1A3: "IND",
+           iso1N3: "356",
+           wikidata: "Q668",
+           nameEn: "India"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IO",
+           iso1A3: "IOT",
+           iso1N3: "086",
+           wikidata: "Q43448",
+           nameEn: "British Indian Ocean Territory",
+           country: "GB"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IQ",
+           iso1A3: "IRQ",
+           iso1N3: "368",
+           wikidata: "Q796",
+           nameEn: "Iraq",
+           groups: ["145", "142", "UN"],
+           callingCodes: ["964"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[42.78887, 37.38615], [42.56725, 37.14878], [42.35724, 37.10998], [42.36697, 37.0627], [41.81736, 36.58782], [41.40058, 36.52502], [41.28864, 36.35368], [41.2564, 36.06012], [41.37027, 35.84095], [41.38184, 35.62502], [41.26569, 35.42708], [41.21654, 35.1508], [41.2345, 34.80049], [41.12388, 34.65742], [40.97676, 34.39788], [40.64314, 34.31604], [38.79171, 33.37328], [39.08202, 32.50304], [38.98762, 32.47694], [39.04251, 32.30203], [39.26157, 32.35555], [39.29903, 32.23259], [40.01521, 32.05667], [42.97601, 30.72204], [42.97796, 30.48295], [44.72255, 29.19736], [46.42415, 29.05947], [46.5527, 29.10283], [46.89695, 29.50584], [47.15166, 30.01044], [47.37192, 30.10421], [47.7095, 30.10453], [48.01114, 29.98906], [48.06782, 30.02906], [48.17332, 30.02448], [48.40479, 29.85763], [48.59531, 29.66815], [48.83867, 29.78572], [48.61441, 29.93675], [48.51011, 29.96238], [48.44785, 30.00148], [48.4494, 30.04456], [48.43384, 30.08233], [48.38869, 30.11062], [48.38714, 30.13485], [48.41671, 30.17254], [48.41117, 30.19846], [48.26393, 30.3408], [48.24385, 30.33846], [48.21279, 30.31644], [48.19425, 30.32796], [48.18321, 30.39703], [48.14585, 30.44133], [48.02443, 30.4789], [48.03221, 30.9967], [47.68219, 31.00004], [47.6804, 31.39086], [47.86337, 31.78422], [47.64771, 32.07666], [47.52474, 32.15972], [47.57144, 32.20583], [47.37529, 32.47808], [47.17218, 32.45393], [46.46788, 32.91992], [46.32298, 32.9731], [46.17198, 32.95612], [46.09103, 32.98354], [46.15175, 33.07229], [46.03966, 33.09577], [46.05367, 33.13097], [46.11905, 33.11924], [46.20623, 33.20395], [45.99919, 33.5082], [45.86687, 33.49263], [45.96183, 33.55751], [45.89801, 33.63661], [45.77814, 33.60938], [45.50261, 33.94968], [45.42789, 33.9458], [45.41077, 33.97421], [45.47264, 34.03099], [45.56176, 34.15088], [45.58667, 34.30147], [45.53552, 34.35148], [45.49171, 34.3439], [45.46697, 34.38221], [45.43879, 34.45949], [45.51883, 34.47692], [45.53219, 34.60441], [45.59074, 34.55558], [45.60224, 34.55057], [45.73923, 34.54416], [45.70031, 34.69277], [45.65672, 34.7222], [45.68284, 34.76624], [45.70031, 34.82322], [45.73641, 34.83975], [45.79682, 34.85133], [45.78904, 34.91135], [45.86532, 34.89858], [45.89477, 34.95805], [45.87864, 35.03441], [45.92173, 35.0465], [45.92203, 35.09538], [45.93108, 35.08148], [45.94756, 35.09188], [46.06508, 35.03699], [46.07747, 35.0838], [46.11763, 35.07551], [46.19116, 35.11097], [46.15642, 35.1268], [46.16229, 35.16984], [46.19738, 35.18536], [46.18457, 35.22561], [46.11367, 35.23729], [46.15474, 35.2883], [46.13152, 35.32548], [46.05358, 35.38568], [45.98453, 35.49848], [46.01518, 35.52012], [45.97584, 35.58132], [46.03028, 35.57416], [46.01307, 35.59756], [46.0165, 35.61501], [45.99452, 35.63574], [46.0117, 35.65059], [46.01631, 35.69139], [46.23736, 35.71414], [46.34166, 35.78363], [46.32921, 35.82655], [46.17198, 35.8013], [46.08325, 35.8581], [45.94711, 35.82218], [45.89784, 35.83708], [45.81442, 35.82107], [45.76145, 35.79898], [45.6645, 35.92872], [45.60018, 35.96069], [45.55245, 35.99943], [45.46594, 36.00042], [45.38275, 35.97156], [45.33916, 35.99424], [45.37652, 36.06222], [45.37312, 36.09917], [45.32235, 36.17383], [45.30038, 36.27769], [45.26261, 36.3001], [45.27394, 36.35846], [45.23953, 36.43257], [45.11811, 36.40751], [45.00759, 36.5402], [45.06985, 36.62645], [45.06985, 36.6814], [45.01537, 36.75128], [44.84725, 36.77622], [44.83479, 36.81362], [44.90173, 36.86096], [44.91199, 36.91468], [44.89862, 37.01897], [44.81611, 37.04383], [44.75229, 37.11958], [44.78319, 37.1431], [44.76698, 37.16162], [44.63179, 37.19229], [44.42631, 37.05825], [44.38117, 37.05825], [44.35315, 37.04955], [44.35937, 37.02843], [44.30645, 36.97373], [44.25975, 36.98119], [44.18503, 37.09551], [44.22239, 37.15756], [44.27998, 37.16501], [44.2613, 37.25055], [44.13521, 37.32486], [44.02002, 37.33229], [43.90949, 37.22453], [43.84878, 37.22205], [43.82699, 37.19477], [43.8052, 37.22825], [43.7009, 37.23692], [43.63085, 37.21957], [43.56702, 37.25675], [43.50787, 37.24436], [43.33508, 37.33105], [43.30083, 37.30629], [43.11403, 37.37436], [42.93705, 37.32015], [42.78887, 37.38615]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "IR",
+           iso1A3: "IRN",
+           iso1N3: "364",
+           wikidata: "Q794",
+           nameEn: "Iran",
+           groups: ["034", "142", "UN"],
+           callingCodes: ["98"]
+         },
+         geometry: {
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+           coordinates: [[[[14.22918, 22.61719], [13.5631, 23.16574], [11.96886, 23.51735], [7.48273, 20.87258], [7.38361, 20.79165], [5.8153, 19.45101], [4.26651, 19.14224], [4.26762, 17.00432], [4.21787, 17.00118], [4.19893, 16.39923], [3.50368, 15.35934], [3.03134, 15.42221], [3.01806, 15.34571], [1.31275, 15.27978], [0.96711, 14.98275], [0.72632, 14.95898], [0.23859, 15.00135], [0.16936, 14.51654], [0.38051, 14.05575], [0.61924, 13.68491], [0.77377, 13.6866], [0.77637, 13.64442], [0.99514, 13.5668], [1.02813, 13.46635], [1.20088, 13.38951], [1.24429, 13.39373], [1.28509, 13.35488], [1.24516, 13.33968], [1.21217, 13.37853], [1.18873, 13.31771], [0.99253, 13.37515], [0.99167, 13.10727], [2.26349, 12.41915], [2.05785, 12.35539], [2.39723, 11.89473], [2.45824, 11.98672], [2.39657, 12.10952], [2.37783, 12.24804], [2.6593, 12.30631], [2.83978, 12.40585], [3.25352, 12.01467], [3.31613, 11.88495], [3.48187, 11.86092], [3.59375, 11.70269], [3.61075, 11.69181], [3.67988, 11.75429], [3.67122, 11.80865], [3.63063, 11.83042], [3.61955, 11.91847], [3.67775, 11.97599], [3.63136, 12.11826], [3.66364, 12.25884], [3.65111, 12.52223], [3.94339, 12.74979], [4.10006, 12.98862], [4.14367, 13.17189], [4.14186, 13.47586], [4.23456, 13.47725], [4.4668, 13.68286], [4.87425, 13.78], [4.9368, 13.7345], [5.07396, 13.75052], [5.21026, 13.73627], [5.27797, 13.75474], [5.35437, 13.83567], [5.52957, 13.8845], [6.15771, 13.64564], [6.27411, 13.67835], [6.43053, 13.6006], [6.69617, 13.34057], [6.94445, 12.99825], [7.0521, 13.00076], [7.12676, 13.02445], [7.22399, 13.1293], [7.39241, 13.09717], [7.81085, 13.34902], [8.07997, 13.30847], [8.25185, 13.20369], [8.41853, 13.06166], [8.49493, 13.07519], [8.60431, 13.01768], [8.64251, 12.93985], [8.97413, 12.83661], [9.65995, 12.80614], [10.00373, 13.18171], [10.19993, 13.27129], [10.46731, 13.28819], [10.66004, 13.36422], [11.4535, 13.37773], [11.88236, 13.2527], [12.04209, 13.14452], [12.16189, 13.10056], [12.19315, 13.12423], [12.47095, 13.06673], [12.58033, 13.27805], [12.6793, 13.29157], [12.87376, 13.48919], [13.05085, 13.53984], [13.19844, 13.52802], [13.33213, 13.71195], [13.6302, 13.71094], [13.47559, 14.40881], [13.48259, 14.46704], [13.68573, 14.55276], [13.67878, 14.64013], [13.809, 14.72915], [13.78991, 14.87519], [13.86301, 15.04043], [14.37425, 15.72591], [15.50373, 16.89649], [15.6032, 18.77402], [15.75098, 19.93002], [15.99632, 20.35364], [15.6721, 20.70069], [15.59841, 20.74039], [15.56004, 20.79488], [15.55382, 20.86507], [15.57248, 20.92138], [15.62515, 20.95395], [15.28332, 21.44557], [15.20213, 21.49365], [15.19692, 21.99339], [14.99751, 23.00539], [14.22918, 22.61719]]]]

          }
          }

-
-         function ribbonItemForMinified(d, source) {
-           if (d && d.pID) {
-             var preset = _this.item(d.pID);
-
-             if (!preset) return null;
-             return RibbonItem(preset, source);
-           }
-
-           return null;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NF",
+           iso1A3: "NFK",
+           iso1N3: "574",
+           wikidata: "Q31057",
+           nameEn: "Norfolk Island",
+           country: "AU",
+           groups: ["053", "009", "UN"],
+           driveSide: "left",
+           callingCodes: ["672 3"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[169.82316, -28.16667], [166.29505, -28.29175], [167.94076, -30.60745], [169.82316, -28.16667]]]]

          }
          }

-
-         _this.getGenericRibbonItems = function () {
-           return ['point', 'line', 'area'].map(function (id) {
-             return RibbonItem(_this.item(id), 'generic');
-           });
-         };
-
-         _this.getAddable = function () {
-           if (!_addablePresetIDs) return [];
-           return _addablePresetIDs.map(function (id) {
-             var preset = _this.item(id);
-
-             if (preset) return RibbonItem(preset, 'addable');
-             return null;
-           }).filter(Boolean);
-         };
-
-         function setRecents(items) {
-           _recents = items;
-           var minifiedItems = items.map(function (d) {
-             return d.minified();
-           });
-           corePreferences('preset_recents', JSON.stringify(minifiedItems));
-           dispatch$1.call('recentsChange');
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NG",
+           iso1A3: "NGA",
+           iso1N3: "566",
+           wikidata: "Q1033",
+           nameEn: "Nigeria",
+           groups: ["011", "202", "002", "UN"],
+           callingCodes: ["234"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[6.15771, 13.64564], [5.52957, 13.8845], [5.35437, 13.83567], [5.27797, 13.75474], [5.21026, 13.73627], [5.07396, 13.75052], [4.9368, 13.7345], [4.87425, 13.78], [4.4668, 13.68286], [4.23456, 13.47725], [4.14186, 13.47586], [4.14367, 13.17189], [4.10006, 12.98862], [3.94339, 12.74979], [3.65111, 12.52223], [3.66364, 12.25884], [3.63136, 12.11826], [3.67775, 11.97599], [3.61955, 11.91847], [3.63063, 11.83042], [3.67122, 11.80865], [3.67988, 11.75429], [3.61075, 11.69181], [3.59375, 11.70269], [3.49175, 11.29765], [3.71505, 11.13015], [3.84243, 10.59316], [3.78292, 10.40538], [3.6844, 10.46351], [3.57275, 10.27185], [3.66908, 10.18136], [3.54429, 9.87739], [3.35383, 9.83641], [3.32099, 9.78032], [3.34726, 9.70696], [3.25093, 9.61632], [3.13928, 9.47167], [3.14147, 9.28375], [3.08017, 9.10006], [2.77907, 9.06924], [2.67523, 7.87825], [2.73095, 7.7755], [2.73405, 7.5423], [2.78668, 7.5116], [2.79442, 7.43486], [2.74489, 7.42565], [2.76965, 7.13543], [2.71702, 6.95722], [2.74024, 6.92802], [2.73405, 6.78508], [2.78823, 6.76356], [2.78204, 6.70514], [2.7325, 6.64057], [2.74334, 6.57291], [2.70464, 6.50831], [2.70566, 6.38038], [2.74181, 6.13349], [5.87055, 3.78489], [8.34397, 4.30689], [8.60302, 4.87353], [8.78027, 5.1243], [8.92029, 5.58403], [8.83687, 5.68483], [8.88156, 5.78857], [8.84209, 5.82562], [9.51757, 6.43874], [9.70674, 6.51717], [9.77824, 6.79088], [9.86314, 6.77756], [10.15135, 7.03781], [10.21466, 6.88996], [10.53639, 6.93432], [10.57214, 7.16345], [10.59746, 7.14719], [10.60789, 7.06885], [10.83727, 6.9358], [10.8179, 6.83377], [10.94302, 6.69325], [11.09644, 6.68437], [11.09495, 6.51717], [11.42041, 6.53789], [11.42264, 6.5882], [11.51499, 6.60892], [11.57755, 6.74059], [11.55818, 6.86186], [11.63117, 6.9905], [11.87396, 7.09398], [11.84864, 7.26098], [11.93205, 7.47812], [12.01844, 7.52981], [11.99908, 7.67302], [12.20909, 7.97553], [12.19271, 8.10826], [12.24782, 8.17904], [12.26123, 8.43696], [12.4489, 8.52536], [12.44146, 8.6152], [12.68722, 8.65938], [12.71701, 8.7595], [12.79, 8.75361], [12.81085, 8.91992], [12.90022, 9.11411], [12.91958, 9.33905], [12.85628, 9.36698], [13.02385, 9.49334], [13.22642, 9.57266], [13.25472, 9.76795], [13.29941, 9.8296], [13.25025, 9.86042], [13.24132, 9.91031], [13.27409, 9.93232], [13.286, 9.9822], [13.25323, 10.00127], [13.25025, 10.03647], [13.34111, 10.12299], [13.43644, 10.13326], [13.5705, 10.53183], [13.54964, 10.61236], [13.73434, 10.9255], [13.70753, 10.94451], [13.7403, 11.00593], [13.78945, 11.00154], [13.97489, 11.30258], [14.17821, 11.23831], [14.6124, 11.51283], [14.64591, 11.66166], [14.55207, 11.72001], [14.61612, 11.7798], [14.6474, 12.17466], [14.4843, 12.35223], [14.22215, 12.36533], [14.17523, 12.41916], [14.20204, 12.53405], [14.08251, 13.0797], [13.6302, 13.71094], [13.33213, 13.71195], [13.19844, 13.52802], [13.05085, 13.53984], [12.87376, 13.48919], [12.6793, 13.29157], [12.58033, 13.27805], [12.47095, 13.06673], [12.19315, 13.12423], [12.16189, 13.10056], [12.04209, 13.14452], [11.88236, 13.2527], [11.4535, 13.37773], [10.66004, 13.36422], [10.46731, 13.28819], [10.19993, 13.27129], [10.00373, 13.18171], [9.65995, 12.80614], [8.97413, 12.83661], [8.64251, 12.93985], [8.60431, 13.01768], [8.49493, 13.07519], [8.41853, 13.06166], [8.25185, 13.20369], [8.07997, 13.30847], [7.81085, 13.34902], [7.39241, 13.09717], [7.22399, 13.1293], [7.12676, 13.02445], [7.0521, 13.00076], [6.94445, 12.99825], [6.69617, 13.34057], [6.43053, 13.6006], [6.27411, 13.67835], [6.15771, 13.64564]]]]

          }
          }

-
-         _this.getRecents = function () {
-           if (!_recents) {
-             // fetch from local storage
-             _recents = (JSON.parse(corePreferences('preset_recents')) || []).reduce(function (acc, d) {
-               var item = ribbonItemForMinified(d, 'recent');
-               if (item && item.preset.addable()) acc.push(item);
-               return acc;
-             }, []);
-           }
-
-           return _recents;
-         };
-
-         _this.addRecent = function (preset, besidePreset, after) {
-           var recents = _this.getRecents();
-
-           var beforeItem = _this.recentMatching(besidePreset);
-
-           var toIndex = recents.indexOf(beforeItem);
-           if (after) toIndex += 1;
-           var newItem = RibbonItem(preset, 'recent');
-           recents.splice(toIndex, 0, newItem);
-           setRecents(recents);
-         };
-
-         _this.removeRecent = function (preset) {
-           var item = _this.recentMatching(preset);
-
-           if (item) {
-             var items = _this.getRecents();
-
-             items.splice(items.indexOf(item), 1);
-             setRecents(items);
-           }
-         };
-
-         _this.recentMatching = function (preset) {
-           var items = _this.getRecents();
-
-           for (var i in items) {
-             if (items[i].matches(preset)) {
-               return items[i];
-             }
-           }
-
-           return null;
-         };
-
-         _this.moveItem = function (items, fromIndex, toIndex) {
-           if (fromIndex === toIndex || fromIndex < 0 || toIndex < 0 || fromIndex >= items.length || toIndex >= items.length) return null;
-           items.splice(toIndex, 0, items.splice(fromIndex, 1)[0]);
-           return items;
-         };
-
-         _this.moveRecent = function (item, beforeItem) {
-           var recents = _this.getRecents();
-
-           var fromIndex = recents.indexOf(item);
-           var toIndex = recents.indexOf(beforeItem);
-
-           var items = _this.moveItem(recents, fromIndex, toIndex);
-
-           if (items) setRecents(items);
-         };
-
-         _this.setMostRecent = function (preset) {
-           if (preset.searchable === false) return;
-
-           var items = _this.getRecents();
-
-           var item = _this.recentMatching(preset);
-
-           if (item) {
-             items.splice(items.indexOf(item), 1);
-           } else {
-             item = RibbonItem(preset, 'recent');
-           } // remove the last recent (first in, first out)
-
-
-           while (items.length >= MAXRECENTS) {
-             items.pop();
-           } // prepend array
-
-
-           items.unshift(item);
-           setRecents(items);
-         };
-
-         function setFavorites(items) {
-           _favorites = items;
-           var minifiedItems = items.map(function (d) {
-             return d.minified();
-           });
-           corePreferences('preset_favorites', JSON.stringify(minifiedItems)); // call update
-
-           dispatch$1.call('favoritePreset');
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NI",
+           iso1A3: "NIC",
+           iso1N3: "558",
+           wikidata: "Q811",
+           nameEn: "Nicaragua",
+           groups: ["013", "003", "419", "019", "UN"],
+           callingCodes: ["505"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-83.13724, 15.00002], [-83.49268, 15.01158], [-83.62101, 14.89448], [-83.89551, 14.76697], [-84.10584, 14.76353], [-84.48373, 14.63249], [-84.70119, 14.68078], [-84.82596, 14.82212], [-84.90082, 14.80489], [-85.1575, 14.53934], [-85.18602, 14.24929], [-85.32149, 14.2562], [-85.45762, 14.11304], [-85.73964, 13.9698], [-85.75477, 13.8499], [-86.03458, 13.99181], [-86.00685, 14.08474], [-86.14801, 14.04317], [-86.35219, 13.77157], [-86.76812, 13.79605], [-86.71267, 13.30348], [-86.87066, 13.30641], [-86.93383, 13.18677], [-86.93197, 13.05313], [-87.03785, 12.98682], [-87.06306, 13.00892], [-87.37107, 12.98646], [-87.55124, 13.12523], [-87.7346, 13.13228], [-88.11443, 12.63306], [-86.14524, 11.09059], [-85.71223, 11.06868], [-85.60529, 11.22607], [-84.92439, 10.9497], [-84.68197, 11.07568], [-83.90838, 10.71161], [-83.66597, 10.79916], [-83.68276, 11.01562], [-82.56142, 11.91792], [-82.06974, 14.49418], [-83.04763, 15.03256], [-83.13724, 15.00002]]]]

          }
          }

-
-         _this.addFavorite = function (preset, besidePreset, after) {
-           var favorites = _this.getFavorites();
-
-           var beforeItem = _this.favoriteMatching(besidePreset);
-
-           var toIndex = favorites.indexOf(beforeItem);
-           if (after) toIndex += 1;
-           var newItem = RibbonItem(preset, 'favorite');
-           favorites.splice(toIndex, 0, newItem);
-           setFavorites(favorites);
-         };
-
-         _this.toggleFavorite = function (preset) {
-           var favs = _this.getFavorites();
-
-           var favorite = _this.favoriteMatching(preset);
-
-           if (favorite) {
-             favs.splice(favs.indexOf(favorite), 1);
-           } else {
-             // only allow 10 favorites
-             if (favs.length === 10) {
-               // remove the last favorite (last in, first out)
-               favs.pop();
-             } // append array
-
-
-             favs.push(RibbonItem(preset, 'favorite'));
-           }
-
-           setFavorites(favs);
-         };
-
-         _this.removeFavorite = function (preset) {
-           var item = _this.favoriteMatching(preset);
-
-           if (item) {
-             var items = _this.getFavorites();
-
-             items.splice(items.indexOf(item), 1);
-             setFavorites(items);
-           }
-         };
-
-         _this.getFavorites = function () {
-           if (!_favorites) {
-             // fetch from local storage
-             var rawFavorites = JSON.parse(corePreferences('preset_favorites'));
-
-             if (!rawFavorites) {
-               rawFavorites = [];
-               corePreferences('preset_favorites', JSON.stringify(rawFavorites));
-             }
-
-             _favorites = rawFavorites.reduce(function (output, d) {
-               var item = ribbonItemForMinified(d, 'favorite');
-               if (item && item.preset.addable()) output.push(item);
-               return output;
-             }, []);
-           }
-
-           return _favorites;
-         };
-
-         _this.favoriteMatching = function (preset) {
-           var favs = _this.getFavorites();
-
-           for (var index in favs) {
-             if (favs[index].matches(preset)) {
-               return favs[index];
-             }
-           }
-
-           return null;
-         };
-
-         return utilRebind(_this, dispatch$1, 'on');
-       }
-
-       function utilTagText(entity) {
-         var obj = entity && entity.tags || {};
-         return Object.keys(obj).map(function (k) {
-           return k + '=' + obj[k];
-         }).join(', ');
-       }
-       function utilTotalExtent(array, graph) {
-         var extent = geoExtent();
-         var val, entity;
-
-         for (var i = 0; i < array.length; i++) {
-           val = array[i];
-           entity = typeof val === 'string' ? graph.hasEntity(val) : val;
-
-           if (entity) {
-             extent._extend(entity.extent(graph));
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NL",
+           iso1A3: "NLD",
+           iso1N3: "528",
+           wikidata: "Q29999",
+           nameEn: "Kingdom of the Netherlands"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NO",
+           iso1A3: "NOR",
+           iso1N3: "578",
+           wikidata: "Q20",
+           nameEn: "Norway"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NP",
+           iso1A3: "NPL",
+           iso1N3: "524",
+           wikidata: "Q837",
+           nameEn: "Nepal",
+           groups: ["034", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["977"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[88.13378, 27.88015], [87.82681, 27.95248], [87.72718, 27.80938], [87.56996, 27.84517], [87.11696, 27.84104], [87.03757, 27.94835], [86.75582, 28.04182], [86.74181, 28.10638], [86.56265, 28.09569], [86.51609, 27.96623], [86.42736, 27.91122], [86.22966, 27.9786], [86.18607, 28.17364], [86.088, 28.09264], [86.08333, 28.02121], [86.12069, 27.93047], [86.06309, 27.90021], [85.94946, 27.9401], [85.97813, 27.99023], [85.90743, 28.05144], [85.84672, 28.18187], [85.74864, 28.23126], [85.71907, 28.38064], [85.69105, 28.38475], [85.60854, 28.25045], [85.59765, 28.30529], [85.4233, 28.32996], [85.38127, 28.28336], [85.10729, 28.34092], [85.18668, 28.54076], [85.19135, 28.62825], [85.06059, 28.68562], [84.85511, 28.58041], [84.62317, 28.73887], [84.47528, 28.74023], [84.2231, 28.89571], [84.24801, 29.02783], [84.18107, 29.23451], [83.97559, 29.33091], [83.82303, 29.30513], [83.63156, 29.16249], [83.44787, 29.30513], [83.28131, 29.56813], [83.07116, 29.61957], [82.73024, 29.81695], [82.5341, 29.9735], [82.38622, 30.02608], [82.16984, 30.0692], [82.19475, 30.16884], [82.10757, 30.23745], [82.10135, 30.35439], [81.99082, 30.33423], [81.62033, 30.44703], [81.5459, 30.37688], [81.41018, 30.42153], [81.39928, 30.21862], [81.33355, 30.15303], [81.2623, 30.14596], [81.29032, 30.08806], [81.24362, 30.0126], [81.12842, 30.01395], [81.03953, 30.20059], [80.92547, 30.17193], [80.91143, 30.22173], [80.86673, 30.17321], [80.8778, 30.13384], [80.67076, 29.95732], [80.60226, 29.95732], [80.57179, 29.91422], [80.56247, 29.86661], [80.48997, 29.79566], [80.43458, 29.80466], [80.41554, 29.79451], [80.36803, 29.73865], [80.38428, 29.68513], [80.41858, 29.63581], [80.37939, 29.57098], [80.24322, 29.44299], [80.31428, 29.30784], [80.28626, 29.20327], [80.24112, 29.21414], [80.26602, 29.13938], [80.23178, 29.11626], [80.18085, 29.13649], [80.05743, 28.91479], [80.06957, 28.82763], [80.12125, 28.82346], [80.37188, 28.63371], [80.44504, 28.63098], [80.52443, 28.54897], [80.50575, 28.6706], [80.55142, 28.69182], [81.03471, 28.40054], [81.19847, 28.36284], [81.32923, 28.13521], [81.38683, 28.17638], [81.48179, 28.12148], [81.47867, 28.08303], [81.91223, 27.84995], [81.97214, 27.93322], [82.06554, 27.92222], [82.46405, 27.6716], [82.70378, 27.72122], [82.74119, 27.49838], [82.93261, 27.50328], [82.94938, 27.46036], [83.19413, 27.45632], [83.27197, 27.38309], [83.2673, 27.36235], [83.29999, 27.32778], [83.35136, 27.33885], [83.38872, 27.39276], [83.39495, 27.4798], [83.61288, 27.47013], [83.85595, 27.35797], [83.86182, 27.4241], [83.93306, 27.44939], [84.02229, 27.43836], [84.10791, 27.52399], [84.21376, 27.45218], [84.25735, 27.44941], [84.29315, 27.39], [84.62161, 27.33885], [84.69166, 27.21294], [84.64496, 27.04669], [84.793, 26.9968], [84.82913, 27.01989], [84.85754, 26.98984], [84.96687, 26.95599], [84.97186, 26.9149], [85.00536, 26.89523], [85.05592, 26.88991], [85.02635, 26.85381], [85.15883, 26.86966], [85.19291, 26.86909], [85.18046, 26.80519], [85.21159, 26.75933], [85.34302, 26.74954], [85.47752, 26.79292], [85.56471, 26.84133], [85.5757, 26.85955], [85.59461, 26.85161], [85.61621, 26.86721], [85.66239, 26.84822], [85.73483, 26.79613], [85.72315, 26.67471], [85.76907, 26.63076], [85.83126, 26.61134], [85.85126, 26.60866], [85.8492, 26.56667], [86.02729, 26.66756], [86.13596, 26.60651], [86.22513, 26.58863], [86.26235, 26.61886], [86.31564, 26.61925], [86.49726, 26.54218], [86.54258, 26.53819], [86.57073, 26.49825], [86.61313, 26.48658], [86.62686, 26.46891], [86.69124, 26.45169], [86.74025, 26.42386], [86.76797, 26.45892], [86.82898, 26.43919], [86.94543, 26.52076], [86.95912, 26.52076], [87.01559, 26.53228], [87.04691, 26.58685], [87.0707, 26.58571], [87.09147, 26.45039], [87.14751, 26.40542], [87.18863, 26.40558], [87.24682, 26.4143], [87.26587, 26.40592], [87.26568, 26.37294], [87.34568, 26.34787], [87.37314, 26.40815], [87.46566, 26.44058], [87.51571, 26.43106], [87.55274, 26.40596], [87.59175, 26.38342], [87.66803, 26.40294], [87.67893, 26.43501], [87.76004, 26.40711], [87.7918, 26.46737], [87.84193, 26.43663], [87.89085, 26.48565], [87.90115, 26.44923], [88.00895, 26.36029], [88.09414, 26.43732], [88.09963, 26.54195], [88.16452, 26.64111], [88.1659, 26.68177], [88.19107, 26.75516], [88.12302, 26.95324], [88.13422, 26.98705], [88.11719, 26.98758], [87.9887, 27.11045], [88.01587, 27.21388], [88.01646, 27.21612], [88.07277, 27.43007], [88.04008, 27.49223], [88.19107, 27.79285], [88.1973, 27.85067], [88.13378, 27.88015]]]]

          }
          }

-
-         return extent;
-       }
-       function utilTagDiff(oldTags, newTags) {
-         var tagDiff = [];
-         var keys = utilArrayUnion(Object.keys(oldTags), Object.keys(newTags)).sort();
-         keys.forEach(function (k) {
-           var oldVal = oldTags[k];
-           var newVal = newTags[k];
-
-           if ((oldVal || oldVal === '') && (newVal === undefined || newVal !== oldVal)) {
-             tagDiff.push({
-               type: '-',
-               key: k,
-               oldVal: oldVal,
-               newVal: newVal,
-               display: '- ' + k + '=' + oldVal
-             });
-           }
-
-           if ((newVal || newVal === '') && (oldVal === undefined || newVal !== oldVal)) {
-             tagDiff.push({
-               type: '+',
-               key: k,
-               oldVal: oldVal,
-               newVal: newVal,
-               display: '+ ' + k + '=' + newVal
-             });
-           }
-         });
-         return tagDiff;
-       }
-       function utilEntitySelector(ids) {
-         return ids.length ? '.' + ids.join(',.') : 'nothing';
-       } // returns an selector to select entity ids for:
-       //  - entityIDs passed in
-       //  - shallow descendant entityIDs for any of those entities that are relations
-
-       function utilEntityOrMemberSelector(ids, graph) {
-         var seen = new Set(ids);
-         ids.forEach(collectShallowDescendants);
-         return utilEntitySelector(Array.from(seen));
-
-         function collectShallowDescendants(id) {
-           var entity = graph.hasEntity(id);
-           if (!entity || entity.type !== 'relation') return;
-           entity.members.map(function (member) {
-             return member.id;
-           }).forEach(function (id) {
-             seen.add(id);
-           });
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NR",
+           iso1A3: "NRU",
+           iso1N3: "520",
+           wikidata: "Q697",
+           nameEn: "Nauru",
+           groups: ["057", "009", "UN"],
+           driveSide: "left",
+           callingCodes: ["674"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[166.95155, 0.14829], [166.21778, -0.7977], [167.60042, -0.88259], [166.95155, 0.14829]]]]

          }
          }

-       } // returns an selector to select entity ids for:
-       //  - entityIDs passed in
-       //  - deep descendant entityIDs for any of those entities that are relations
-
-       function utilEntityOrDeepMemberSelector(ids, graph) {
-         return utilEntitySelector(utilEntityAndDeepMemberIDs(ids, graph));
-       } // returns an selector to select entity ids for:
-       //  - entityIDs passed in
-       //  - deep descendant entityIDs for any of those entities that are relations
-
-       function utilEntityAndDeepMemberIDs(ids, graph) {
-         var seen = new Set();
-         ids.forEach(collectDeepDescendants);
-         return Array.from(seen);
-
-         function collectDeepDescendants(id) {
-           if (seen.has(id)) return;
-           seen.add(id);
-           var entity = graph.hasEntity(id);
-           if (!entity || entity.type !== 'relation') return;
-           entity.members.map(function (member) {
-             return member.id;
-           }).forEach(collectDeepDescendants); // recurse
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NU",
+           iso1A3: "NIU",
+           iso1N3: "570",
+           wikidata: "Q34020",
+           nameEn: "Niue",
+           country: "NZ",
+           groups: ["061", "009", "UN"],
+           driveSide: "left",
+           callingCodes: ["683"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-170.83899, -18.53439], [-170.82274, -20.44429], [-168.63096, -18.60489], [-170.83899, -18.53439]]]]

          }
          }

-       } // returns an selector to select entity ids for:
-       //  - deep descendant entityIDs for any of those entities that are relations
-
-       function utilDeepMemberSelector(ids, graph, skipMultipolgonMembers) {
-         var idsSet = new Set(ids);
-         var seen = new Set();
-         var returners = new Set();
-         ids.forEach(collectDeepDescendants);
-         return utilEntitySelector(Array.from(returners));
-
-         function collectDeepDescendants(id) {
-           if (seen.has(id)) return;
-           seen.add(id);
-
-           if (!idsSet.has(id)) {
-             returners.add(id);
-           }
-
-           var entity = graph.hasEntity(id);
-           if (!entity || entity.type !== 'relation') return;
-           if (skipMultipolgonMembers && entity.isMultipolygon()) return;
-           entity.members.map(function (member) {
-             return member.id;
-           }).forEach(collectDeepDescendants); // recurse
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "NZ",
+           iso1A3: "NZL",
+           iso1N3: "554",
+           wikidata: "Q664",
+           nameEn: "New Zealand"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "OM",
+           iso1A3: "OMN",
+           iso1N3: "512",
+           wikidata: "Q842",
+           nameEn: "Oman",
+           groups: ["145", "142", "UN"],
+           callingCodes: ["968"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[56.82555, 25.7713], [56.79239, 26.41236], [56.68954, 26.76645], [56.2644, 26.58649], [55.81777, 26.18798], [56.08666, 26.05038], [56.15498, 26.06828], [56.19334, 25.9795], [56.13963, 25.82765], [56.17416, 25.77239], [56.13579, 25.73524], [56.14826, 25.66351], [56.18363, 25.65508], [56.20473, 25.61119], [56.25365, 25.60211], [56.26636, 25.60643], [56.25341, 25.61443], [56.26534, 25.62825], [56.82555, 25.7713]]], [[[56.26062, 25.33108], [56.23362, 25.31253], [56.25008, 25.28843], [56.24465, 25.27505], [56.20838, 25.25668], [56.20872, 25.24104], [56.24341, 25.22867], [56.27628, 25.23404], [56.34438, 25.26653], [56.35172, 25.30681], [56.3111, 25.30107], [56.3005, 25.31815], [56.26062, 25.33108]], [[56.28423, 25.26344], [56.27086, 25.26128], [56.2716, 25.27916], [56.28102, 25.28486], [56.29379, 25.2754], [56.28423, 25.26344]]], [[[61.45114, 22.55394], [56.86325, 25.03856], [56.3227, 24.97284], [56.34873, 24.93205], [56.30269, 24.88334], [56.20568, 24.85063], [56.20062, 24.78565], [56.13684, 24.73699], [56.06128, 24.74457], [56.03535, 24.81161], [55.97836, 24.87673], [55.97467, 24.89639], [56.05106, 24.87461], [56.05715, 24.95727], [55.96316, 25.00857], [55.90849, 24.96771], [55.85094, 24.96858], [55.81116, 24.9116], [55.81348, 24.80102], [55.83408, 24.77858], [55.83271, 24.68567], [55.76461, 24.5287], [55.83271, 24.41521], [55.83395, 24.32776], [55.80747, 24.31069], [55.79145, 24.27914], [55.76781, 24.26209], [55.75939, 24.26114], [55.75382, 24.2466], [55.75257, 24.23466], [55.76558, 24.23227], [55.77658, 24.23476], [55.83367, 24.20193], [55.95472, 24.2172], [56.01799, 24.07426], [55.8308, 24.01633], [55.73301, 24.05994], [55.48677, 23.94946], [55.57358, 23.669], [55.22634, 23.10378], [55.2137, 22.71065], [55.66469, 21.99658], [54.99756, 20.00083], [52.00311, 19.00083], [52.78009, 17.35124], [52.74267, 17.29519], [52.81185, 17.28568], [57.49095, 8.14549], [61.45114, 22.55394]]]]

          }
          }

-       } // Adds or removes highlight styling for the specified entities
-
-       function utilHighlightEntities(ids, highlighted, context) {
-         context.surface().selectAll(utilEntityOrDeepMemberSelector(ids, context.graph())).classed('highlighted', highlighted);
-       } // returns an Array that is the union of:
-       //  - nodes for any nodeIDs passed in
-       //  - child nodes of any wayIDs passed in
-       //  - descendant member and child nodes of relationIDs passed in
-
-       function utilGetAllNodes(ids, graph) {
-         var seen = new Set();
-         var nodes = new Set();
-         ids.forEach(collectNodes);
-         return Array.from(nodes);
-
-         function collectNodes(id) {
-           if (seen.has(id)) return;
-           seen.add(id);
-           var entity = graph.hasEntity(id);
-           if (!entity) return;
-
-           if (entity.type === 'node') {
-             nodes.add(entity);
-           } else if (entity.type === 'way') {
-             entity.nodes.forEach(collectNodes);
-           } else {
-             entity.members.map(function (member) {
-               return member.id;
-             }).forEach(collectNodes); // recurse
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PA",
+           iso1A3: "PAN",
+           iso1N3: "591",
+           wikidata: "Q804",
+           nameEn: "Panama",
+           groups: ["013", "003", "419", "019", "UN"],
+           callingCodes: ["507"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-77.32389, 8.81247], [-77.58292, 9.22278], [-78.79327, 9.93766], [-82.51044, 9.65379], [-82.56507, 9.57279], [-82.61345, 9.49881], [-82.66667, 9.49746], [-82.77206, 9.59573], [-82.87919, 9.62645], [-82.84871, 9.4973], [-82.93516, 9.46741], [-82.93516, 9.07687], [-82.72126, 8.97125], [-82.88253, 8.83331], [-82.91377, 8.774], [-82.92068, 8.74832], [-82.8794, 8.6981], [-82.82739, 8.60153], [-82.83975, 8.54755], [-82.83322, 8.52464], [-82.8382, 8.48117], [-82.8679, 8.44042], [-82.93056, 8.43465], [-83.05209, 8.33394], [-82.9388, 8.26634], [-82.88641, 8.10219], [-82.89137, 8.05755], [-82.89978, 8.04083], [-82.94503, 7.93865], [-82.13751, 6.97312], [-78.06168, 7.07793], [-77.89178, 7.22681], [-77.81426, 7.48319], [-77.72157, 7.47612], [-77.72514, 7.72348], [-77.57185, 7.51147], [-77.17257, 7.97422], [-77.45064, 8.49991], [-77.32389, 8.81247]]]]

          }
          }

-       }
-       function utilDisplayName(entity) {
-         var localizedNameKey = 'name:' + _mainLocalizer.languageCode().toLowerCase();
-         var name = entity.tags[localizedNameKey] || entity.tags.name || '';
-         var network = entity.tags.cycle_network || entity.tags.network;
-
-         if (!name && entity.tags.ref) {
-           name = entity.tags.ref;
-
-           if (network) {
-             name = network + ' ' + name;
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PE",
+           iso1A3: "PER",
+           iso1N3: "604",
+           wikidata: "Q419",
+           nameEn: "Peru",
+           groups: ["005", "419", "019", "UN"],
+           callingCodes: ["51"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-74.26675, -0.97229], [-74.42701, -0.50218], [-75.18513, -0.0308], [-75.25764, -0.11943], [-75.40192, -0.17196], [-75.61997, -0.10012], [-75.60169, -0.18708], [-75.53615, -0.19213], [-75.22862, -0.60048], [-75.22862, -0.95588], [-75.3872, -0.9374], [-75.57429, -1.55961], [-76.05203, -2.12179], [-76.6324, -2.58397], [-77.94147, -3.05454], [-78.19369, -3.36431], [-78.14324, -3.47653], [-78.22642, -3.51113], [-78.24589, -3.39907], [-78.34362, -3.38633], [-78.68394, -4.60754], [-78.85149, -4.66795], [-79.01659, -5.01481], [-79.1162, -4.97774], [-79.26248, -4.95167], [-79.59402, -4.46848], [-79.79722, -4.47558], [-80.13945, -4.29786], [-80.39256, -4.48269], [-80.46386, -4.41516], [-80.32114, -4.21323], [-80.45023, -4.20938], [-80.4822, -4.05477], [-80.46386, -4.01342], [-80.13232, -3.90317], [-80.19926, -3.68894], [-80.18741, -3.63994], [-80.19848, -3.59249], [-80.21642, -3.5888], [-80.20535, -3.51667], [-80.22629, -3.501], [-80.23651, -3.48652], [-80.24586, -3.48677], [-80.24123, -3.46124], [-80.20647, -3.431], [-80.30602, -3.39149], [-84.52388, -3.36941], [-85.71054, -21.15413], [-70.59118, -18.35072], [-70.378, -18.3495], [-70.31267, -18.31258], [-70.16394, -18.31737], [-69.96732, -18.25992], [-69.81607, -18.12582], [-69.75305, -17.94605], [-69.82868, -17.72048], [-69.79087, -17.65563], [-69.66483, -17.65083], [-69.46897, -17.4988], [-69.46863, -17.37466], [-69.62883, -17.28142], [-69.16896, -16.72233], [-69.00853, -16.66769], [-69.04027, -16.57214], [-68.98358, -16.42165], [-68.79464, -16.33272], [-68.96238, -16.194], [-69.09986, -16.22693], [-69.20291, -16.16668], [-69.40336, -15.61358], [-69.14856, -15.23478], [-69.36254, -14.94634], [-68.88135, -14.18639], [-69.05265, -13.68546], [-68.8864, -13.40792], [-68.85615, -12.87769], [-68.65044, -12.50689], [-68.98115, -11.8979], [-69.57156, -10.94555], [-69.57835, -10.94051], [-69.90896, -10.92744], [-70.38791, -11.07096], [-70.51395, -10.92249], [-70.64134, -11.0108], [-70.62487, -9.80666], [-70.55429, -9.76692], [-70.58453, -9.58303], [-70.53373, -9.42628], [-71.23394, -9.9668], [-72.14742, -9.98049], [-72.31883, -9.5184], [-72.72216, -9.41397], [-73.21498, -9.40904], [-72.92886, -9.04074], [-73.76576, -7.89884], [-73.65485, -7.77897], [-73.96938, -7.58465], [-73.77011, -7.28944], [-73.73986, -6.87919], [-73.12983, -6.43852], [-73.24579, -6.05764], [-72.83973, -5.14765], [-72.64391, -5.0391], [-71.87003, -4.51661], [-70.96814, -4.36915], [-70.77601, -4.15717], [-70.33236, -4.15214], [-70.19582, -4.3607], [-70.11305, -4.27281], [-70.00888, -4.37833], [-69.94708, -4.2431], [-70.3374, -3.79505], [-70.52393, -3.87553], [-70.71396, -3.7921], [-70.04609, -2.73906], [-70.94377, -2.23142], [-71.75223, -2.15058], [-72.92587, -2.44514], [-73.65312, -1.26222], [-74.26675, -0.97229]]]]

          }
          }

-
-         return name;
-       }
-       function utilDisplayNameForPath(entity) {
-         var name = utilDisplayName(entity);
-         var isFirefox = utilDetect().browser.toLowerCase().indexOf('firefox') > -1;
-
-         if (!isFirefox && name && rtlRegex.test(name)) {
-           name = fixRTLTextForSvg(name);
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PF",
+           iso1A3: "PYF",
+           iso1N3: "258",
+           wikidata: "Q30971",
+           nameEn: "French Polynesia",
+           country: "FR",
+           groups: ["Q1451600", "061", "009", "UN"],
+           callingCodes: ["689"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-135.59706, -4.70473], [-156.48634, -15.52824], [-156.45576, -31.75456], [-133.59543, -28.4709], [-135.59706, -4.70473]]]]

          }
          }

-
-         return name;
-       }
-       function utilDisplayType(id) {
-         return {
-           n: _t('inspector.node'),
-           w: _t('inspector.way'),
-           r: _t('inspector.relation')
-         }[id.charAt(0)];
-       }
-       function utilDisplayLabel(entity, graphOrGeometry) {
-         var displayName = utilDisplayName(entity);
-
-         if (displayName) {
-           // use the display name if there is one
-           return displayName;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PG",
+           iso1A3: "PNG",
+           iso1N3: "598",
+           wikidata: "Q691",
+           nameEn: "Papua New Guinea",
+           groups: ["054", "009", "UN"],
+           driveSide: "left",
+           callingCodes: ["675"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[141.03157, 2.12829], [140.99813, -6.3233], [140.85295, -6.72996], [140.90448, -6.85033], [141.01763, -6.90181], [141.01842, -9.35091], [141.88934, -9.36111], [142.19246, -9.15378], [142.48658, -9.36754], [143.29772, -9.33993], [143.87386, -9.02382], [145.2855, -9.62524], [156.73836, -14.50464], [154.74815, -7.33315], [155.60735, -6.92266], [155.69784, -6.92661], [155.92557, -6.84664], [156.03993, -6.65703], [156.03296, -6.55528], [160.43769, -4.17974], [141.03157, 2.12829]]]]

          }
          }

-
-         var preset = typeof graphOrGeometry === 'string' ? _mainPresetIndex.matchTags(entity.tags, graphOrGeometry) : _mainPresetIndex.match(entity, graphOrGeometry);
-
-         if (preset && preset.name()) {
-           // use the preset name if there is a match
-           return preset.name();
-         } // fallback to the display type (node/way/relation)
-
-
-         return utilDisplayType(entity.id);
-       }
-       function utilEntityRoot(entityType) {
-         return {
-           node: 'n',
-           way: 'w',
-           relation: 'r'
-         }[entityType];
-       } // Returns a single object containing the tags of all the given entities.
-       // Example:
-       // {
-       //   highway: 'service',
-       //   service: 'parking_aisle'
-       // }
-       //           +
-       // {
-       //   highway: 'service',
-       //   service: 'driveway',
-       //   width: '3'
-       // }
-       //           =
-       // {
-       //   highway: 'service',
-       //   service: [ 'driveway', 'parking_aisle' ],
-       //   width: [ '3', undefined ]
-       // }
-
-       function utilCombinedTags(entityIDs, graph) {
-         var tags = {};
-         var tagCounts = {};
-         var allKeys = new Set();
-         var entities = entityIDs.map(function (entityID) {
-           return graph.hasEntity(entityID);
-         }).filter(Boolean); // gather the aggregate keys
-
-         entities.forEach(function (entity) {
-           var keys = Object.keys(entity.tags).filter(Boolean);
-           keys.forEach(function (key) {
-             allKeys.add(key);
-           });
-         });
-         entities.forEach(function (entity) {
-           allKeys.forEach(function (key) {
-             var value = entity.tags[key]; // purposely allow `undefined`
-
-             if (!tags.hasOwnProperty(key)) {
-               // first value, set as raw
-               tags[key] = value;
-             } else {
-               if (!Array.isArray(tags[key])) {
-                 if (tags[key] !== value) {
-                   // first alternate value, replace single value with array
-                   tags[key] = [tags[key], value];
-                 }
-               } else {
-                 // type is array
-                 if (tags[key].indexOf(value) === -1) {
-                   // subsequent alternate value, add to array
-                   tags[key].push(value);
-                 }
-               }
-             }
-
-             var tagHash = key + '=' + value;
-             if (!tagCounts[tagHash]) tagCounts[tagHash] = 0;
-             tagCounts[tagHash] += 1;
-           });
-         });
-
-         for (var key in tags) {
-           if (!Array.isArray(tags[key])) continue; // sort values by frequency then alphabetically
-
-           tags[key] = tags[key].sort(function (val1, val2) {
-             var key = key; // capture
-
-             var count2 = tagCounts[key + '=' + val2];
-             var count1 = tagCounts[key + '=' + val1];
-
-             if (count2 !== count1) {
-               return count2 - count1;
-             }
-
-             if (val2 && val1) {
-               return val1.localeCompare(val2);
-             }
-
-             return val1 ? 1 : -1;
-           });
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PH",
+           iso1A3: "PHL",
+           iso1N3: "608",
+           wikidata: "Q928",
+           nameEn: "Philippines",
+           aliases: ["PI", "RP"],
+           groups: ["035", "142", "UN"],
+           callingCodes: ["63"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[129.19694, 7.84182], [121.8109, 21.77688], [120.69238, 21.52331], [118.82252, 14.67191], [115.39742, 10.92666], [116.79524, 7.43869], [117.17735, 7.52841], [117.93857, 6.89845], [117.98544, 6.27477], [119.52945, 5.35672], [118.93936, 4.09009], [118.06469, 4.16638], [121.14448, 2.12444], [129.19694, 7.84182]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PK",
+           iso1A3: "PAK",
+           iso1N3: "586",
+           wikidata: "Q843",
+           nameEn: "Pakistan",
+           groups: ["034", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["92"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[75.72737, 36.7529], [75.45562, 36.71971], [75.40481, 36.95382], [75.13839, 37.02622], [74.56453, 37.03023], [74.53739, 36.96224], [74.43389, 37.00977], [74.04856, 36.82648], [73.82685, 36.91421], [72.6323, 36.84601], [72.18135, 36.71838], [71.80267, 36.49924], [71.60491, 36.39429], [71.19505, 36.04134], [71.37969, 35.95865], [71.55273, 35.71483], [71.49917, 35.6267], [71.65435, 35.4479], [71.54294, 35.31037], [71.5541, 35.28776], [71.67495, 35.21262], [71.52938, 35.09023], [71.55273, 35.02615], [71.49917, 35.00478], [71.50329, 34.97328], [71.29472, 34.87728], [71.28356, 34.80882], [71.08718, 34.69034], [71.11602, 34.63047], [71.0089, 34.54568], [71.02401, 34.44835], [71.17662, 34.36769], [71.12815, 34.26619], [71.13078, 34.16503], [71.09453, 34.13524], [71.09307, 34.11961], [71.06933, 34.10564], [71.07345, 34.06242], [70.88119, 33.97933], [70.54336, 33.9463], [69.90203, 34.04194], [69.87307, 33.9689], [69.85671, 33.93719], [70.00503, 33.73528], [70.14236, 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+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "PL",
+           iso1A3: "POL",
+           iso1N3: "616",
+           wikidata: "Q36",
+           nameEn: "Poland",
+           groups: ["EU", "151", "150", "UN"],
+           callingCodes: ["48"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[18.57853, 55.25302], [14.20811, 54.12784], [14.22634, 53.9291], [14.20647, 53.91671], [14.18544, 53.91258], [14.20823, 53.90776], [14.21323, 53.8664], [14.27249, 53.74464], [14.26782, 53.69866], [14.2836, 53.67721], [14.27133, 53.66613], [14.28477, 53.65955], [14.2853, 53.63392], [14.31904, 53.61581], [14.30416, 53.55499], [14.3273, 53.50587], [14.35209, 53.49506], [14.4215, 53.27724], [14.44133, 53.27427], [14.45125, 53.26241], [14.40662, 53.21098], [14.37853, 53.20405], [14.36696, 53.16444], [14.38679, 53.13669], [14.35044, 53.05829], [14.25954, 53.00264], [14.14056, 52.95786], [14.15873, 52.87715], [14.12256, 52.84311], [14.13806, 52.82392], [14.22071, 52.81175], [14.61073, 52.59847], [14.6289, 52.57136], [14.60081, 52.53116], [14.63056, 52.48993], [14.54423, 52.42568], [14.55228, 52.35264], [14.56378, 52.33838], [14.58149, 52.28007], [14.70139, 52.25038], [14.71319, 52.22144], [14.68344, 52.19612], [14.70616, 52.16927], [14.67683, 52.13936], [14.6917, 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42.70125], [21.79413, 42.65923], [21.75672, 42.62695], [21.7327, 42.55041], [21.70522, 42.54176], [21.7035, 42.51899], [21.62556, 42.45106], [21.64209, 42.41081], [21.62887, 42.37664], [21.59029, 42.38042], [21.57021, 42.3647], [21.53467, 42.36809], [21.5264, 42.33634], [21.56772, 42.30946], [21.58992, 42.25915], [21.70111, 42.23789], [21.77176, 42.2648], [21.84654, 42.3247], [21.91595, 42.30392], [21.94405, 42.34669], [22.02908, 42.29848], [22.16384, 42.32103], [22.29605, 42.37477], [22.29275, 42.34913], [22.34773, 42.31725], [22.45919, 42.33822], [22.47498, 42.3915], [22.51961, 42.3991], [22.55669, 42.50144], [22.43983, 42.56851], [22.4997, 42.74144], [22.43309, 42.82057], [22.54302, 42.87774], [22.74826, 42.88701], [22.78397, 42.98253], [22.89521, 43.03625], [22.98104, 43.11199], [23.00806, 43.19279], [22.89727, 43.22417], [22.82036, 43.33665], [22.53397, 43.47225], [22.47582, 43.6558], [22.41043, 43.69566], [22.35558, 43.81281], [22.41449, 44.00514], [22.61688, 44.06534], 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45.78522], [20.77416, 45.75601], [20.70069, 45.7493], [20.65645, 45.82801], [20.54818, 45.89939], [20.35862, 45.99356], [20.26068, 46.12332], [20.09713, 46.17315], [20.03533, 46.14509], [20.01816, 46.17696], [19.93508, 46.17553], [19.81491, 46.1313], [19.66007, 46.19005]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "RU",
+           iso1A3: "RUS",
+           iso1N3: "643",
+           wikidata: "Q159",
+           nameEn: "Russia"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "RW",
+           iso1A3: "RWA",
+           iso1N3: "646",
+           wikidata: "Q1037",
+           nameEn: "Rwanda",
+           groups: ["014", "202", "002", "UN"],
+           callingCodes: ["250"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[30.47194, -1.0555], [30.35212, -1.06896], [30.16369, -1.34303], [29.912, -1.48269], [29.82657, -1.31187], [29.59061, -1.39016], [29.53062, -1.40499], [29.45038, -1.5054], [29.36322, -1.50887], [29.24323, -1.66826], [29.24458, -1.69663], [29.11847, -1.90576], [29.17562, -2.12278], [29.105, -2.27043], [29.00051, -2.29001], [28.95642, -2.37321], [28.89601, -2.37321], [28.86826, -2.41888], [28.86846, -2.44866], [28.89132, -2.47557], [28.89342, -2.49017], [28.88846, -2.50493], [28.87497, -2.50887], [28.86209, -2.5231], [28.86193, -2.53185], [28.87943, -2.55165], [28.89288, -2.55848], [28.90226, -2.62385], [28.89793, -2.66111], [28.94346, -2.69124], [29.00357, -2.70596], [29.04081, -2.7416], [29.0562, -2.58632], [29.32234, -2.6483], [29.36805, -2.82933], [29.88237, -2.75105], [29.95911, -2.33348], [30.14034, -2.43626], [30.42933, -2.31064], [30.54501, -2.41404], [30.83915, -2.35795], [30.89303, -2.08223], [30.80802, -1.91477], [30.84079, -1.64652], [30.71974, -1.43244], [30.57123, -1.33264], [30.50889, -1.16412], [30.45116, -1.10641], [30.47194, -1.0555]]]]

          }
          }

-
-         return tags;
-       }
-       function utilStringQs(str) {
-         var i = 0; // advance past any leading '?' or '#' characters
-
-         while (i < str.length && (str[i] === '?' || str[i] === '#')) {
-           i++;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SA",
+           iso1A3: "SAU",
+           iso1N3: "682",
+           wikidata: "Q851",
+           nameEn: "Saudi Arabia",
+           groups: ["145", "142", "UN"],
+           callingCodes: ["966"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[40.01521, 32.05667], [39.29903, 32.23259], [38.99233, 31.99721], [36.99791, 31.50081], [37.99354, 30.49998], [37.66395, 30.33245], [37.4971, 29.99949], [36.75083, 29.86903], [36.50005, 29.49696], [36.07081, 29.18469], [34.8812, 29.36878], [34.4454, 27.91479], [37.8565, 22.00903], [39.63762, 18.37348], [40.99158, 15.81743], [42.15205, 16.40211], [42.76801, 16.40371], [42.94625, 16.39721], [42.94351, 16.49467], [42.97215, 16.51093], [43.11601, 16.53166], [43.15274, 16.67248], [43.22066, 16.65179], [43.21325, 16.74416], [43.25857, 16.75304], [43.26303, 16.79479], [43.24801, 16.80613], [43.22956, 16.80613], [43.22012, 16.83932], [43.18338, 16.84852], [43.1398, 16.90696], [43.19328, 16.94703], [43.1813, 16.98438], [43.18233, 17.02673], [43.23967, 17.03428], [43.17787, 17.14717], [43.20156, 17.25901], [43.32653, 17.31179], [43.22533, 17.38343], [43.29185, 17.53224], [43.43005, 17.56148], [43.70631, 17.35762], [44.50126, 17.47475], [46.31018, 17.20464], [46.76494, 17.29151], [47.00571, 16.94765], [47.48245, 17.10808], [47.58351, 17.50366], [48.19996, 18.20584], [49.04884, 18.59899], [52.00311, 19.00083], [54.99756, 20.00083], [55.66469, 21.99658], [55.2137, 22.71065], [55.13599, 22.63334], [52.56622, 22.94341], [51.59617, 24.12041], [51.58871, 24.27256], [51.41644, 24.39615], [51.58834, 24.66608], [51.39468, 24.62785], [51.29972, 24.50747], [51.09638, 24.46907], [50.92992, 24.54396], [50.8133, 24.74049], [50.57069, 25.57887], [50.302, 25.87592], [50.26923, 26.08243], [50.38162, 26.53976], [50.71771, 26.73086], [50.37726, 27.89227], [49.98877, 27.87827], [49.00421, 28.81495], [48.42991, 28.53628], [47.70561, 28.5221], [47.59863, 28.66798], [47.58376, 28.83382], [47.46202, 29.0014], [46.5527, 29.10283], [46.42415, 29.05947], [44.72255, 29.19736], [42.97796, 30.48295], [42.97601, 30.72204], [40.01521, 32.05667]]]]

          }
          }

-
-         str = str.slice(i);
-         return str.split('&').reduce(function (obj, pair) {
-           var parts = pair.split('=');
-
-           if (parts.length === 2) {
-             obj[parts[0]] = null === parts[1] ? '' : decodeURIComponent(parts[1]);
-           }
-
-           return obj;
-         }, {});
-       }
-       function utilQsString(obj, noencode) {
-         // encode everything except special characters used in certain hash parameters:
-         // "/" in map states, ":", ",", {" and "}" in background
-         function softEncode(s) {
-           return encodeURIComponent(s).replace(/(%2F|%3A|%2C|%7B|%7D)/g, decodeURIComponent);
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SB",
+           iso1A3: "SLB",
+           iso1N3: "090",
+           wikidata: "Q685",
+           nameEn: "Solomon Islands",
+           groups: ["054", "009", "UN"],
+           driveSide: "left",
+           callingCodes: ["677"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[172.71443, -12.01327], [160.43769, -4.17974], [156.03296, -6.55528], [156.03993, -6.65703], [155.92557, -6.84664], [155.69784, -6.92661], [155.60735, -6.92266], [154.74815, -7.33315], [156.73836, -14.50464], [172.71443, -12.01327]]]]

          }
          }

-
-         return Object.keys(obj).sort().map(function (key) {
-           return encodeURIComponent(key) + '=' + (noencode ? softEncode(obj[key]) : encodeURIComponent(obj[key]));
-         }).join('&');
-       }
-       function utilPrefixDOMProperty(property) {
-         var prefixes = ['webkit', 'ms', 'moz', 'o'];
-         var i = -1;
-         var n = prefixes.length;
-         var s = document.body;
-         if (property in s) return property;
-         property = property.substr(0, 1).toUpperCase() + property.substr(1);
-
-         while (++i < n) {
-           if (prefixes[i] + property in s) {
-             return prefixes[i] + property;
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SC",
+           iso1A3: "SYC",
+           iso1N3: "690",
+           wikidata: "Q1042",
+           nameEn: "Seychelles",
+           groups: ["014", "202", "002", "UN"],
+           driveSide: "left",
+           callingCodes: ["248"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[43.75112, -10.38913], [54.83239, -10.93575], [66.3222, 5.65313], [43.75112, -10.38913]]]]

          }
          }

-
-         return false;
-       }
-       function utilPrefixCSSProperty(property) {
-         var prefixes = ['webkit', 'ms', 'Moz', 'O'];
-         var i = -1;
-         var n = prefixes.length;
-         var s = document.body.style;
-
-         if (property.toLowerCase() in s) {
-           return property.toLowerCase();
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SD",
+           iso1A3: "SDN",
+           iso1N3: "729",
+           wikidata: "Q1049",
+           nameEn: "Sudan",
+           groups: ["015", "002", "UN"],
+           callingCodes: ["249"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[37.8565, 22.00903], [34.0765, 22.00501], [33.99686, 21.76784], [33.57251, 21.72406], [33.17563, 22.00405], [24.99885, 21.99535], [24.99794, 19.99661], [23.99715, 20.00038], [23.99539, 19.49944], [23.99997, 15.69575], [23.62785, 15.7804], [23.38812, 15.69649], [23.10792, 15.71297], [22.93201, 15.55107], [22.92579, 15.47007], [22.99584, 15.40105], [22.99584, 15.22989], [22.66115, 14.86308], [22.70474, 14.69149], [22.38562, 14.58907], [22.44944, 14.24986], [22.55997, 14.23024], [22.5553, 14.11704], [22.22995, 13.96754], [22.08674, 13.77863], [22.29689, 13.3731], [22.1599, 13.19281], [22.02914, 13.13976], [21.94819, 13.05637], [21.81432, 12.81362], [21.89371, 12.68001], [21.98711, 12.63292], [22.15679, 12.66634], [22.22684, 12.74682], [22.46345, 12.61925], [22.38873, 12.45514], [22.50548, 12.16769], [22.48369, 12.02766], [22.64092, 12.07485], [22.54907, 11.64372], [22.7997, 11.40424], [22.93124, 11.41645], [22.97249, 11.21955], [22.87758, 10.91915], [23.02221, 10.69235], [23.3128, 10.45214], [23.67164, 9.86923], [23.69155, 9.67566], [24.09319, 9.66572], [24.12744, 9.73784], [24.49389, 9.79962], [24.84653, 9.80643], [24.97739, 9.9081], [25.05688, 10.06776], [25.0918, 10.33718], [25.78141, 10.42599], [25.93163, 10.38159], [25.93241, 10.17941], [26.21338, 9.91545], [26.35815, 9.57946], [26.70685, 9.48735], [27.14427, 9.62858], [27.90704, 9.61323], [28.99983, 9.67155], [29.06988, 9.74826], [29.53844, 9.75133], [29.54, 10.07949], [29.94629, 10.29245], [30.00389, 10.28633], [30.53005, 9.95992], [30.82893, 9.71451], [30.84605, 9.7498], [31.28504, 9.75287], [31.77539, 10.28939], [31.99177, 10.65065], [32.46967, 11.04662], [32.39358, 11.18207], [32.39578, 11.70208], [32.10079, 11.95203], [32.73921, 11.95203], [32.73921, 12.22757], [33.25876, 12.22111], [33.13988, 11.43248], [33.26977, 10.83632], [33.24645, 10.77913], [33.52294, 10.64382], [33.66604, 10.44254], [33.80913, 10.32994], [33.90159, 10.17179], [33.96984, 10.15446], [33.99185, 9.99623], [33.96323, 9.80972], [33.9082, 9.762], [33.87958, 9.49937], [34.10229, 9.50238], [34.08717, 9.55243], [34.13186, 9.7492], [34.20484, 9.9033], [34.22718, 10.02506], [34.32102, 10.11599], [34.34783, 10.23914], [34.2823, 10.53508], [34.4372, 10.781], [34.59062, 10.89072], [34.77383, 10.74588], [34.77532, 10.69027], [34.86618, 10.74588], [34.86916, 10.78832], [34.97491, 10.86147], [34.97789, 10.91559], [34.93172, 10.95946], [35.01215, 11.19626], [34.95704, 11.24448], [35.09556, 11.56278], [35.05832, 11.71158], [35.11492, 11.85156], [35.24302, 11.91132], [35.70476, 12.67101], [36.01458, 12.72478], [36.14268, 12.70879], [36.16651, 12.88019], [36.13374, 12.92665], [36.24545, 13.36759], [36.38993, 13.56459], [36.48824, 13.83954], [36.44653, 13.95666], [36.54376, 14.25597], [36.44337, 15.14963], [36.54276, 15.23478], [36.69761, 15.75323], [36.76371, 15.80831], [36.92193, 16.23451], [36.99777, 17.07172], [37.42694, 17.04041], [37.50967, 17.32199], [38.13362, 17.53906], [38.37133, 17.66269], [38.45916, 17.87167], [38.57727, 17.98125], [39.63762, 18.37348], [37.8565, 22.00903]]]]

          }
          }

-
-         while (++i < n) {
-           if (prefixes[i] + property in s) {
-             return '-' + prefixes[i].toLowerCase() + property.replace(/([A-Z])/g, '-$1').toLowerCase();
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SE",
+           iso1A3: "SWE",
+           iso1N3: "752",
+           wikidata: "Q34",
+           nameEn: "Sweden",
+           groups: ["EU", "154", "150", "UN"],
+           callingCodes: ["46"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[24.15791, 65.85385], [23.90497, 66.15802], [23.71339, 66.21299], [23.64982, 66.30603], [23.67591, 66.3862], [23.63776, 66.43568], [23.85959, 66.56434], [23.89488, 66.772], [23.98059, 66.79585], [23.98563, 66.84149], [23.56214, 67.17038], [23.58735, 67.20752], [23.54701, 67.25435], [23.75372, 67.29914], [23.75372, 67.43688], [23.39577, 67.46974], [23.54701, 67.59306], [23.45627, 67.85297], [23.65793, 67.9497], [23.40081, 68.05545], [23.26469, 68.15134], [23.15377, 68.14759], [23.10336, 68.26551], [22.73028, 68.40881], [22.00429, 68.50692], [21.03001, 68.88969], [20.90649, 68.89696], [20.85104, 68.93142], [20.91658, 68.96764], [20.78802, 69.03087], [20.55258, 69.06069], [20.0695, 69.04469], [20.28444, 68.93283], [20.33435, 68.80174], [20.22027, 68.67246], [19.95647, 68.55546], [20.22027, 68.48759], [19.93508, 68.35911], [18.97255, 68.52416], [18.63032, 68.50849], [18.39503, 68.58672], [18.1241, 68.53721], [18.13836, 68.20874], [17.90787, 67.96537], [17.30416, 68.11591], [16.7409, 67.91037], [16.38441, 67.52923], [16.12774, 67.52106], [16.09922, 67.4364], [16.39154, 67.21653], [16.35589, 67.06419], [15.37197, 66.48217], [15.49318, 66.28509], [15.05113, 66.15572], [14.53778, 66.12399], [14.50926, 65.31786], [13.64276, 64.58402], [14.11117, 64.46674], [14.16051, 64.18725], [13.98222, 64.00953], [13.23411, 64.09087], [12.74105, 64.02171], [12.14928, 63.59373], [12.19919, 63.47935], [11.98529, 63.27487], [12.19919, 63.00104], [12.07085, 62.6297], [12.29187, 62.25699], [12.14746, 61.7147], [12.40595, 61.57226], [12.57707, 61.56547], [12.86939, 61.35427], [12.69115, 61.06584], [12.2277, 61.02442], [12.59133, 60.50559], [12.52003, 60.13846], [12.36317, 59.99259], [12.15641, 59.8926], [11.87121, 59.86039], [11.92112, 59.69531], [11.69297, 59.59442], [11.8213, 59.24985], [11.65732, 58.90177], [11.45199, 58.89604], [11.4601, 58.99022], [11.34459, 59.11672], [11.15367, 59.07862], [11.08911, 58.98745], [10.64958, 58.89391], [10.40861, 58.38489], [12.16597, 56.60205], [12.07466, 56.29488], [12.65312, 56.04345], [12.6372, 55.91371], [12.88472, 55.63369], [12.60345, 55.42675], [12.84405, 55.13257], [14.28399, 55.1553], [14.89259, 55.5623], [15.79951, 55.54655], [19.64795, 57.06466], [19.84909, 57.57876], [20.5104, 59.15546], [19.08191, 60.19152], [19.23413, 60.61414], [20.15877, 63.06556], [24.14112, 65.39731], [24.15107, 65.81427], [24.14798, 65.83466], [24.15791, 65.85385]]]]

          }
          }

-
-         return false;
-       }
-       var transformProperty;
-       function utilSetTransform(el, x, y, scale) {
-         var prop = transformProperty = transformProperty || utilPrefixCSSProperty('Transform');
-         var translate = utilDetect().opera ? 'translate(' + x + 'px,' + y + 'px)' : 'translate3d(' + x + 'px,' + y + 'px,0)';
-         return el.style(prop, translate + (scale ? ' scale(' + scale + ')' : ''));
-       } // Calculates Levenshtein distance between two strings
-       // see:  https://en.wikipedia.org/wiki/Levenshtein_distance
-       // first converts the strings to lowercase and replaces diacritic marks with ascii equivalents.
-
-       function utilEditDistance(a, b) {
-         a = remove$1(a.toLowerCase());
-         b = remove$1(b.toLowerCase());
-         if (a.length === 0) return b.length;
-         if (b.length === 0) return a.length;
-         var matrix = [];
-         var i, j;
-
-         for (i = 0; i <= b.length; i++) {
-           matrix[i] = [i];
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SG",
+           iso1A3: "SGP",
+           iso1N3: "702",
+           wikidata: "Q334",
+           nameEn: "Singapore",
+           groups: ["035", "142", "UN"],
+           driveSide: "left",
+           callingCodes: ["65"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[104.00131, 1.42405], [103.93384, 1.42926], [103.89565, 1.42841], [103.86383, 1.46288], [103.81181, 1.47953], [103.76395, 1.45183], [103.74161, 1.4502], [103.7219, 1.46108], [103.67468, 1.43166], [103.62738, 1.35255], [103.56591, 1.19719], [103.66049, 1.18825], [103.74084, 1.12902], [104.03085, 1.26954], [104.12282, 1.27714], [104.08072, 1.35998], [104.09162, 1.39694], [104.08871, 1.42015], [104.07348, 1.43322], [104.04622, 1.44691], [104.02277, 1.4438], [104.00131, 1.42405]]]]

          }
          }

-
-         for (j = 0; j <= a.length; j++) {
-           matrix[0][j] = j;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SH",
+           iso1A3: "SHN",
+           iso1N3: "654",
+           wikidata: "Q192184",
+           nameEn: "Saint Helena, Ascension and Tristan da Cunha",
+           country: "GB"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SI",
+           iso1A3: "SVN",
+           iso1N3: "705",
+           wikidata: "Q215",
+           nameEn: "Slovenia",
+           groups: ["EU", "039", "150", "UN"],
+           callingCodes: ["386"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[16.50139, 46.56684], [16.39217, 46.63673], [16.38594, 46.6549], [16.41863, 46.66238], [16.42641, 46.69228], [16.37816, 46.69975], [16.30966, 46.7787], [16.31303, 46.79838], [16.3408, 46.80641], [16.34547, 46.83836], [16.2941, 46.87137], [16.2365, 46.87775], [16.21892, 46.86961], [16.15711, 46.85434], [16.14365, 46.8547], [16.10983, 46.867], [16.05786, 46.83927], [15.99054, 46.82772], [15.99126, 46.78199], [15.98432, 46.74991], [15.99769, 46.7266], [16.02808, 46.71094], [16.04347, 46.68694], [16.04036, 46.6549], [15.99988, 46.67947], [15.98512, 46.68463], [15.94864, 46.68769], [15.87691, 46.7211], [15.8162, 46.71897], [15.78518, 46.70712], [15.76771, 46.69863], [15.73823, 46.70011], [15.72279, 46.69548], [15.69523, 46.69823], [15.67411, 46.70735], [15.6543, 46.70616], [15.6543, 46.69228], [15.6365, 46.6894], [15.63255, 46.68069], [15.62317, 46.67947], [15.59826, 46.68908], [15.54533, 46.66985], [15.55333, 46.64988], [15.54431, 46.6312], [15.46906, 46.61321], [15.45514, 46.63697], [15.41235, 46.65556], [15.23711, 46.63994], [15.14215, 46.66131], [15.01451, 46.641], [14.98024, 46.6009], [14.96002, 46.63459], [14.92283, 46.60848], [14.87129, 46.61], [14.86419, 46.59411], [14.83549, 46.56614], [14.81836, 46.51046], [14.72185, 46.49974], [14.66892, 46.44936], [14.5942, 46.43434], [14.56463, 46.37208], [14.52176, 46.42617], [14.45877, 46.41717], [14.42608, 46.44614], [14.314, 46.43327], [14.28326, 46.44315], [14.15989, 46.43327], [14.12097, 46.47724], [14.04002, 46.49117], [14.00422, 46.48474], [13.89837, 46.52331], [13.7148, 46.5222], [13.68684, 46.43881], [13.59777, 46.44137], [13.5763, 46.42613], [13.5763, 46.40915], [13.47019, 46.3621], [13.43418, 46.35992], [13.44808, 46.33507], [13.37671, 46.29668], [13.42218, 46.20758], [13.47587, 46.22725], [13.56114, 46.2054], [13.56682, 46.18703], [13.64451, 46.18966], [13.66472, 46.17392], [13.64053, 46.13587], [13.57072, 46.09022], [13.50104, 46.05986], [13.49568, 46.04839], [13.50998, 46.04498], [13.49702, 46.01832], [13.47474, 46.00546], [13.50104, 45.98078], [13.52963, 45.96588], [13.56759, 45.96991], [13.58903, 45.99009], [13.62074, 45.98388], [13.63458, 45.98947], [13.64307, 45.98326], [13.6329, 45.94894], [13.63815, 45.93607], [13.61931, 45.91782], [13.60857, 45.89907], [13.59565, 45.89446], [13.58644, 45.88173], [13.57563, 45.8425], [13.58858, 45.83503], [13.59784, 45.8072], [13.66986, 45.79955], [13.8235, 45.7176], [13.83332, 45.70855], [13.83422, 45.68703], [13.87933, 45.65207], [13.9191, 45.6322], [13.8695, 45.60835], [13.86771, 45.59898], [13.84106, 45.58185], [13.78445, 45.5825], [13.74587, 45.59811], [13.7198, 45.59352], [13.6076, 45.64761], [13.45644, 45.59464], [13.56979, 45.4895], [13.62902, 45.45898], [13.67398, 45.4436], [13.7785, 45.46787], [13.81742, 45.43729], [13.88124, 45.42637], [13.90771, 45.45149], [13.97309, 45.45258], [13.99488, 45.47551], [13.96063, 45.50825], [14.00578, 45.52352], [14.07116, 45.48752], [14.20348, 45.46896], [14.22371, 45.50388], [14.24239, 45.50607], [14.26611, 45.48239], [14.27681, 45.4902], [14.32487, 45.47142], [14.36693, 45.48642], [14.49769, 45.54424], [14.5008, 45.60852], [14.53816, 45.6205], [14.57397, 45.67165], [14.60977, 45.66403], [14.59576, 45.62812], [14.69694, 45.57366], [14.68605, 45.53006], [14.71718, 45.53442], [14.80124, 45.49515], [14.81992, 45.45913], [14.90554, 45.47769], [14.92266, 45.52788], [15.02385, 45.48533], [15.05187, 45.49079], [15.16862, 45.42309], [15.27758, 45.46678], [15.33051, 45.45258], [15.38188, 45.48752], [15.30249, 45.53224], [15.29837, 45.5841], [15.27747, 45.60504], [15.31027, 45.6303], [15.34695, 45.63382], [15.34214, 45.64702], [15.38952, 45.63682], [15.4057, 45.64727], [15.34919, 45.71623], [15.30872, 45.69014], [15.25423, 45.72275], [15.40836, 45.79491], [15.47531, 45.79802], [15.47325, 45.8253], [15.52234, 45.82195], [15.57952, 45.84953], [15.64185, 45.82915], [15.66662, 45.84085], [15.70411, 45.8465], [15.68232, 45.86819], [15.68383, 45.88867], [15.67967, 45.90455], [15.70636, 45.92116], [15.70327, 46.00015], [15.71246, 46.01196], [15.72977, 46.04682], [15.62317, 46.09103], [15.6083, 46.11992], [15.59909, 46.14761], [15.64904, 46.19229], [15.6434, 46.21396], [15.67395, 46.22478], [15.75436, 46.21969], [15.75479, 46.20336], [15.78817, 46.21719], [15.79284, 46.25811], [15.97965, 46.30652], [16.07616, 46.3463], [16.07314, 46.36458], [16.05065, 46.3833], [16.05281, 46.39141], [16.14859, 46.40547], [16.18824, 46.38282], [16.30233, 46.37837], [16.30162, 46.40437], [16.27329, 46.41467], [16.27398, 46.42875], [16.25124, 46.48067], [16.23961, 46.49653], [16.26759, 46.50566], [16.26733, 46.51505], [16.29793, 46.5121], [16.37193, 46.55008], [16.38771, 46.53608], [16.44036, 46.5171], [16.5007, 46.49644], [16.52604, 46.47831], [16.59527, 46.47524], [16.52604, 46.5051], [16.52885, 46.53303], [16.50139, 46.56684]]]]

          }
          }

-
-         for (i = 1; i <= b.length; i++) {
-           for (j = 1; j <= a.length; j++) {
-             if (b.charAt(i - 1) === a.charAt(j - 1)) {
-               matrix[i][j] = matrix[i - 1][j - 1];
-             } else {
-               matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, // substitution
-               Math.min(matrix[i][j - 1] + 1, // insertion
-               matrix[i - 1][j] + 1)); // deletion
-             }
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SJ",
+           iso1A3: "SJM",
+           iso1N3: "744",
+           wikidata: "Q842829",
+           nameEn: "Svalbard and Jan Mayen",
+           country: "NO"
+         },
+         geometry: null
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SK",
+           iso1A3: "SVK",
+           iso1N3: "703",
+           wikidata: "Q214",
+           nameEn: "Slovakia",
+           groups: ["EU", "151", "150", "UN"],
+           callingCodes: ["421"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[19.82237, 49.27806], [19.78581, 49.41701], [19.72127, 49.39288], [19.6375, 49.40897], [19.64162, 49.45184], [19.57845, 49.46077], [19.53313, 49.52856], [19.52626, 49.57311], [19.45348, 49.61583], [19.37795, 49.574], [19.36009, 49.53747], [19.25435, 49.53391], [19.18019, 49.41165], [18.9742, 49.39557], [18.97283, 49.49914], [18.94536, 49.52143], [18.84521, 49.51672], [18.74761, 49.492], [18.67757, 49.50895], [18.6144, 49.49824], [18.57183, 49.51162], [18.53063, 49.49022], [18.54848, 49.47059], [18.44686, 49.39467], [18.4084, 49.40003], [18.4139, 49.36517], [18.36446, 49.3267], [18.18456, 49.28909], [18.15022, 49.24518], [18.1104, 49.08624], [18.06885, 49.03157], [17.91814, 49.01784], [17.87831, 48.92679], [17.77944, 48.92318], [17.73126, 48.87885], [17.7094, 48.86721], [17.5295, 48.81117], [17.45671, 48.85004], [17.3853, 48.80936], [17.29054, 48.85546], [17.19355, 48.87602], [17.11202, 48.82925], [17.00215, 48.70887], [16.93955, 48.60371], [16.94611, 48.53614], [16.85204, 48.44968], [16.8497, 48.38321], [16.83588, 48.3844], [16.83317, 48.38138], [16.84243, 48.35258], [16.90903, 48.32519], [16.89461, 48.31332], [16.97701, 48.17385], [17.02919, 48.13996], [17.05735, 48.14179], [17.09168, 48.09366], [17.07039, 48.0317], [17.16001, 48.00636], [17.23699, 48.02094], [17.71215, 47.7548], [18.02938, 47.75665], [18.29305, 47.73541], [18.56496, 47.76588], [18.66521, 47.76772], [18.74074, 47.8157], [18.8506, 47.82308], [18.76821, 47.87469], [18.76134, 47.97499], [18.82176, 48.04206], [19.01952, 48.07052], [19.23924, 48.0595], [19.28182, 48.08336], [19.47957, 48.09437], [19.52489, 48.19791], [19.63338, 48.25006], [19.92452, 48.1283], [20.24312, 48.2784], [20.29943, 48.26104], [20.5215, 48.53336], [20.83248, 48.5824], [21.11516, 48.49546], [21.44063, 48.58456], [21.6068, 48.50365], [21.67134, 48.3989], [21.72525, 48.34628], [21.8279, 48.33321], [21.83339, 48.36242], [22.14689, 48.4005], [22.16023, 48.56548], [22.21379, 48.6218], [22.34151, 48.68893], [22.42934, 48.92857], [22.48296, 48.99172], [22.54338, 49.01424], [22.56155, 49.08865], [22.04427, 49.22136], [21.96385, 49.3437], [21.82927, 49.39467], [21.77983, 49.35443], [21.62328, 49.4447], [21.43376, 49.41433], [21.27858, 49.45988], [21.19756, 49.4054], [21.12477, 49.43666], [21.041, 49.41791], [21.09799, 49.37176], [20.98733, 49.30774], [20.9229, 49.29626], [20.77971, 49.35383], [20.72274, 49.41813], [20.61666, 49.41791], [20.5631, 49.375], [20.46422, 49.41612], [20.39939, 49.3896], [20.31728, 49.39914], [20.31453, 49.34817], [20.21977, 49.35265], [20.13738, 49.31685], [20.08238, 49.1813], [19.98494, 49.22904], [19.90529, 49.23532], [19.86409, 49.19316], [19.75286, 49.20751], [19.82237, 49.27806]]]]

          }
          }

-
-         return matrix[b.length][a.length];
-       } // a d3.mouse-alike which
-       // 1. Only works on HTML elements, not SVG
-       // 2. Does not cause style recalculation
-
-       function utilFastMouse(container) {
-         var rect = container.getBoundingClientRect();
-         var rectLeft = rect.left;
-         var rectTop = rect.top;
-         var clientLeft = +container.clientLeft;
-         var clientTop = +container.clientTop;
-         return function (e) {
-           return [e.clientX - rectLeft - clientLeft, e.clientY - rectTop - clientTop];
-         };
-       }
-       function utilAsyncMap(inputs, func, callback) {
-         var remaining = inputs.length;
-         var results = [];
-         var errors = [];
-         inputs.forEach(function (d, i) {
-           func(d, function done(err, data) {
-             errors[i] = err;
-             results[i] = data;
-             remaining--;
-             if (!remaining) callback(errors, results);
-           });
-         });
-       } // wraps an index to an interval [0..length-1]
-
-       function utilWrap(index, length) {
-         if (index < 0) {
-           index += Math.ceil(-index / length) * length;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SL",
+           iso1A3: "SLE",
+           iso1N3: "694",
+           wikidata: "Q1044",
+           nameEn: "Sierra Leone",
+           groups: ["011", "202", "002", "UN"],
+           callingCodes: ["232"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-10.27575, 8.48711], [-10.37257, 8.48941], [-10.54891, 8.31174], [-10.63934, 8.35326], [-10.70565, 8.29235], [-10.61422, 8.5314], [-10.47707, 8.67669], [-10.56197, 8.81225], [-10.5783, 9.06386], [-10.74484, 9.07998], [-10.6534, 9.29919], [-11.2118, 10.00098], [-11.89624, 9.99763], [-11.91023, 9.93927], [-12.12634, 9.87203], [-12.24262, 9.92386], [-12.47254, 9.86834], [-12.76788, 9.3133], [-12.94095, 9.26335], [-13.08953, 9.0409], [-13.18586, 9.0925], [-13.29911, 9.04245], [-14.36218, 8.64107], [-12.15048, 6.15992], [-11.50429, 6.92704], [-11.4027, 6.97746], [-11.29417, 7.21576], [-10.60422, 7.7739], [-10.60492, 8.04072], [-10.57523, 8.04829], [-10.51554, 8.1393], [-10.45023, 8.15627], [-10.35227, 8.15223], [-10.29839, 8.21283], [-10.31635, 8.28554], [-10.30084, 8.30008], [-10.27575, 8.48711]]]]

          }
          }

-
-         return index % length;
-       }
-       /**
-        * a replacement for functor
-        *
-        * @param {*} value any value
-        * @returns {Function} a function that returns that value or the value if it's a function
-        */
-
-       function utilFunctor(value) {
-         if (typeof value === 'function') return value;
-         return function () {
-           return value;
-         };
-       }
-       function utilNoAuto(selection) {
-         var isText = selection.size() && selection.node().tagName.toLowerCase() === 'textarea';
-         return selection // assign 'new-password' even for non-password fields to prevent browsers (Chrome) ignoring 'off'
-         .attr('autocomplete', 'new-password').attr('autocorrect', 'off').attr('autocapitalize', 'off').attr('spellcheck', isText ? 'true' : 'false');
-       } // https://stackoverflow.com/questions/194846/is-there-any-kind-of-hash-code-function-in-javascript
-       // https://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
-
-       function utilHashcode(str) {
-         var hash = 0;
-
-         if (str.length === 0) {
-           return hash;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SM",
+           iso1A3: "SMR",
+           iso1N3: "674",
+           wikidata: "Q238",
+           nameEn: "San Marino",
+           groups: ["039", "150", "UN"],
+           callingCodes: ["378"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[12.45648, 43.89369], [12.48771, 43.89706], [12.49429, 43.90973], [12.49247, 43.91774], [12.49724, 43.92248], [12.50269, 43.92363], [12.50496, 43.93017], [12.51553, 43.94096], [12.51427, 43.94897], [12.50655, 43.95796], [12.50875, 43.96198], [12.50622, 43.97131], [12.51109, 43.97201], [12.51064, 43.98165], [12.5154, 43.98508], [12.51463, 43.99122], [12.50678, 43.99113], [12.49406, 43.98492], [12.47853, 43.98052], [12.46205, 43.97463], [12.44684, 43.96597], [12.43662, 43.95698], [12.42005, 43.9578], [12.41414, 43.95273], [12.40415, 43.95485], [12.40506, 43.94325], [12.41165, 43.93769], [12.41551, 43.92984], [12.40733, 43.92379], [12.41233, 43.90956], [12.40935, 43.9024], [12.41641, 43.89991], [12.44184, 43.90498], [12.45648, 43.89369]]]]

          }
          }

-
-         for (var i = 0; i < str.length; i++) {
-           var _char = str.charCodeAt(i);
-
-           hash = (hash << 5) - hash + _char;
-           hash = hash & hash; // Convert to 32bit integer
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SN",
+           iso1A3: "SEN",
+           iso1N3: "686",
+           wikidata: "Q1041",
+           nameEn: "Senegal",
+           groups: ["011", "202", "002", "UN"],
+           callingCodes: ["221"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-14.32144, 16.61495], [-15.00557, 16.64997], [-15.6509, 16.50315], [-16.27016, 16.51565], [-16.4429, 16.20605], [-16.44814, 16.09753], [-16.48967, 16.0496], [-16.50854, 16.09032], [-17.15288, 16.07139], [-18.35085, 14.63444], [-17.43598, 13.59273], [-15.47902, 13.58758], [-15.36504, 13.79313], [-14.93719, 13.80173], [-14.34721, 13.46578], [-13.8955, 13.59126], [-13.79409, 13.34472], [-14.36795, 13.23033], [-15.14917, 13.57989], [-15.26908, 13.37768], [-15.80478, 13.34832], [-15.80355, 13.16729], [-16.69343, 13.16791], [-16.74676, 13.06025], [-17.43966, 13.04579], [-17.4623, 11.92379], [-16.70562, 12.34803], [-16.38191, 12.36449], [-16.20591, 12.46157], [-15.67302, 12.42974], [-15.17582, 12.6847], [-13.70523, 12.68013], [-13.05296, 12.64003], [-13.06603, 12.49342], [-12.87336, 12.51892], [-12.35415, 12.32758], [-11.91331, 12.42008], [-11.46267, 12.44559], [-11.37536, 12.40788], [-11.39935, 12.97808], [-11.63025, 13.39174], [-11.83345, 13.33333], [-12.06897, 13.71049], [-11.93043, 13.84505], [-12.23936, 14.76324], [-13.11029, 15.52116], [-13.43135, 16.09022], [-13.80075, 16.13961], [-14.32144, 16.61495]]]]

          }
          }

-
-         return hash;
-       } // Returns version of `str` with all runs of special characters replaced by `_`;
-       // suitable for HTML ids, classes, selectors, etc.
-
-       function utilSafeClassName(str) {
-         return str.toLowerCase().replace(/[^a-z0-9]+/g, '_');
-       } // Returns string based on `val` that is highly unlikely to collide with an id
-       // used previously or that's present elsewhere in the document. Useful for preventing
-       // browser-provided autofills or when embedding iD on pages with unknown elements.
-
-       function utilUniqueDomId(val) {
-         return 'ideditor-' + utilSafeClassName(val.toString()) + '-' + new Date().getTime().toString();
-       } // Returns the length of `str` in unicode characters. This can be less than
-       // `String.length()` since a single unicode character can be composed of multiple
-       // JavaScript UTF-16 code units.
-
-       function utilUnicodeCharsCount(str) {
-         // Native ES2015 implementations of `Array.from` split strings into unicode characters
-         return Array.from(str).length;
-       } // Returns a new string representing `str` cut from its start to `limit` length
-       // in unicode characters. Note that this runs the risk of splitting graphemes.
-
-       function utilUnicodeCharsTruncated(str, limit) {
-         return Array.from(str).slice(0, limit).join('');
-       }
-
-       function osmEntity(attrs) {
-         // For prototypal inheritance.
-         if (this instanceof osmEntity) return; // Create the appropriate subtype.
-
-         if (attrs && attrs.type) {
-           return osmEntity[attrs.type].apply(this, arguments);
-         } else if (attrs && attrs.id) {
-           return osmEntity[osmEntity.id.type(attrs.id)].apply(this, arguments);
-         } // Initialize a generic Entity (used only in tests).
-
-
-         return new osmEntity().initialize(arguments);
-       }
-
-       osmEntity.id = function (type) {
-         return osmEntity.id.fromOSM(type, osmEntity.id.next[type]--);
-       };
-
-       osmEntity.id.next = {
-         changeset: -1,
-         node: -1,
-         way: -1,
-         relation: -1
-       };
-
-       osmEntity.id.fromOSM = function (type, id) {
-         return type[0] + id;
-       };
-
-       osmEntity.id.toOSM = function (id) {
-         return id.slice(1);
-       };
-
-       osmEntity.id.type = function (id) {
-         return {
-           'c': 'changeset',
-           'n': 'node',
-           'w': 'way',
-           'r': 'relation'
-         }[id[0]];
-       }; // A function suitable for use as the second argument to d3.selection#data().
-
-
-       osmEntity.key = function (entity) {
-         return entity.id + 'v' + (entity.v || 0);
-       };
-
-       var _deprecatedTagValuesByKey;
-
-       osmEntity.deprecatedTagValuesByKey = function (dataDeprecated) {
-         if (!_deprecatedTagValuesByKey) {
-           _deprecatedTagValuesByKey = {};
-           dataDeprecated.forEach(function (d) {
-             var oldKeys = Object.keys(d.old);
-
-             if (oldKeys.length === 1) {
-               var oldKey = oldKeys[0];
-               var oldValue = d.old[oldKey];
-
-               if (oldValue !== '*') {
-                 if (!_deprecatedTagValuesByKey[oldKey]) {
-                   _deprecatedTagValuesByKey[oldKey] = [oldValue];
-                 } else {
-                   _deprecatedTagValuesByKey[oldKey].push(oldValue);
-                 }
-               }
-             }
-           });
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SO",
+           iso1A3: "SOM",
+           iso1N3: "706",
+           wikidata: "Q1045",
+           nameEn: "Somalia",
+           groups: ["014", "202", "002", "UN"],
+           callingCodes: ["252"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[51.12877, 12.56479], [43.90659, 12.3823], [42.95776, 10.98533], [42.69452, 10.62672], [42.87643, 10.18441], [43.0937, 9.90579], [43.23518, 9.84605], [43.32613, 9.59205], [44.19222, 8.93028], [46.99339, 7.9989], [47.92477, 8.00111], [47.97917, 8.00124], [44.98104, 4.91821], [44.02436, 4.9451], [43.40263, 4.79289], [43.04177, 4.57923], [42.97746, 4.44032], [42.84526, 4.28357], [42.55853, 4.20518], [42.07619, 4.17667], [41.89488, 3.97375], [41.31368, 3.14314], [40.98767, 2.82959], [41.00099, -0.83068], [41.56, -1.59812], [41.56362, -1.66375], [41.75542, -1.85308], [57.49095, 8.14549], [51.12877, 12.56479]]]]

          }
          }

-
-         return _deprecatedTagValuesByKey;
-       };
-
-       osmEntity.prototype = {
-         tags: {},
-         initialize: function initialize(sources) {
-           for (var i = 0; i < sources.length; ++i) {
-             var source = sources[i];
-
-             for (var prop in source) {
-               if (Object.prototype.hasOwnProperty.call(source, prop)) {
-                 if (source[prop] === undefined) {
-                   delete this[prop];
-                 } else {
-                   this[prop] = source[prop];
-                 }
-               }
-             }
-           }
-
-           if (!this.id && this.type) {
-             this.id = osmEntity.id(this.type);
-           }
-
-           if (!this.hasOwnProperty('visible')) {
-             this.visible = true;
-           }
-
-           return this;
-         },
-         copy: function copy(resolver, copies) {
-           if (copies[this.id]) return copies[this.id];
-           var copy = osmEntity(this, {
-             id: undefined,
-             user: undefined,
-             version: undefined
-           });
-           copies[this.id] = copy;
-           return copy;
-         },
-         osmId: function osmId() {
-           return osmEntity.id.toOSM(this.id);
-         },
-         isNew: function isNew() {
-           return this.osmId() < 0;
-         },
-         update: function update(attrs) {
-           return osmEntity(this, attrs, {
-             v: 1 + (this.v || 0)
-           });
-         },
-         mergeTags: function mergeTags(tags) {
-           var merged = Object.assign({}, this.tags); // shallow copy
-
-           var changed = false;
-
-           for (var k in tags) {
-             var t1 = merged[k];
-             var t2 = tags[k];
-
-             if (!t1) {
-               changed = true;
-               merged[k] = t2;
-             } else if (t1 !== t2) {
-               changed = true;
-               merged[k] = utilUnicodeCharsTruncated(utilArrayUnion(t1.split(/;\s*/), t2.split(/;\s*/)).join(';'), 255 // avoid exceeding character limit; see also services/osm.js -> maxCharsForTagValue()
-               );
-             }
-           }
-
-           return changed ? this.update({
-             tags: merged
-           }) : this;
-         },
-         intersects: function intersects(extent, resolver) {
-           return this.extent(resolver).intersects(extent);
-         },
-         hasNonGeometryTags: function hasNonGeometryTags() {
-           return Object.keys(this.tags).some(function (k) {
-             return k !== 'area';
-           });
-         },
-         hasParentRelations: function hasParentRelations(resolver) {
-           return resolver.parentRelations(this).length > 0;
-         },
-         hasInterestingTags: function hasInterestingTags() {
-           return Object.keys(this.tags).some(osmIsInterestingTag);
-         },
-         hasWikidata: function hasWikidata() {
-           return !!this.tags.wikidata || !!this.tags['brand:wikidata'];
-         },
-         isHighwayIntersection: function isHighwayIntersection() {
-           return false;
-         },
-         isDegenerate: function isDegenerate() {
-           return true;
-         },
-         deprecatedTags: function deprecatedTags(dataDeprecated) {
-           var tags = this.tags; // if there are no tags, none can be deprecated
-
-           if (Object.keys(tags).length === 0) return [];
-           var deprecated = [];
-           dataDeprecated.forEach(function (d) {
-             var oldKeys = Object.keys(d.old);
-
-             if (d.replace) {
-               var hasExistingValues = Object.keys(d.replace).some(function (replaceKey) {
-                 if (!tags[replaceKey] || d.old[replaceKey]) return false;
-                 var replaceValue = d.replace[replaceKey];
-                 if (replaceValue === '*') return false;
-                 if (replaceValue === tags[replaceKey]) return false;
-                 return true;
-               }); // don't flag deprecated tags if the upgrade path would overwrite existing data - #7843
-
-               if (hasExistingValues) return;
-             }
-
-             var matchesDeprecatedTags = oldKeys.every(function (oldKey) {
-               if (!tags[oldKey]) return false;
-               if (d.old[oldKey] === '*') return true;
-               if (d.old[oldKey] === tags[oldKey]) return true;
-               var vals = tags[oldKey].split(';').filter(Boolean);
-
-               if (vals.length === 0) {
-                 return false;
-               } else if (vals.length > 1) {
-                 return vals.indexOf(d.old[oldKey]) !== -1;
-               } else {
-                 if (tags[oldKey] === d.old[oldKey]) {
-                   if (d.replace && d.old[oldKey] === d.replace[oldKey]) {
-                     var replaceKeys = Object.keys(d.replace);
-                     return !replaceKeys.every(function (replaceKey) {
-                       return tags[replaceKey] === d.replace[replaceKey];
-                     });
-                   } else {
-                     return true;
-                   }
-                 }
-               }
-
-               return false;
-             });
-
-             if (matchesDeprecatedTags) {
-               deprecated.push(d);
-             }
-           });
-           return deprecated;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SR",
+           iso1A3: "SUR",
+           iso1N3: "740",
+           wikidata: "Q730",
+           nameEn: "Suriname",
+           groups: ["005", "419", "019", "UN"],
+           driveSide: "left",
+           callingCodes: ["597"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-54.26916, 5.26909], [-54.01877, 5.52789], [-54.01074, 5.68785], [-53.7094, 6.2264], [-56.84822, 6.73257], [-57.31629, 5.33714], [-57.22536, 5.15605], [-57.37442, 5.0208], [-57.8699, 4.89394], [-58.0307, 3.95513], [-57.35891, 3.32121], [-56.70519, 2.02964], [-56.55439, 2.02003], [-56.47045, 1.95135], [-55.99278, 1.83137], [-55.89863, 1.89861], [-55.92159, 2.05236], [-56.13054, 2.27723], [-55.96292, 2.53188], [-55.71493, 2.40342], [-55.01919, 2.564], [-54.6084, 2.32856], [-54.42864, 2.42442], [-54.28534, 2.67798], [-53.9849, 3.58697], [-53.98914, 3.627], [-54.05128, 3.63557], [-54.19367, 3.84387], [-54.38444, 4.13222], [-54.4717, 4.91964], [-54.26916, 5.26909]]]]

          }
          }

-       };
-
-       function osmLanes(entity) {
-         if (entity.type !== 'way') return null;
-         if (!entity.tags.highway) return null;
-         var tags = entity.tags;
-         var isOneWay = entity.isOneWay();
-         var laneCount = getLaneCount(tags, isOneWay);
-         var maxspeed = parseMaxspeed(tags);
-         var laneDirections = parseLaneDirections(tags, isOneWay, laneCount);
-         var forward = laneDirections.forward;
-         var backward = laneDirections.backward;
-         var bothways = laneDirections.bothways; // parse the piped string 'x|y|z' format
-
-         var turnLanes = {};
-         turnLanes.unspecified = parseTurnLanes(tags['turn:lanes']);
-         turnLanes.forward = parseTurnLanes(tags['turn:lanes:forward']);
-         turnLanes.backward = parseTurnLanes(tags['turn:lanes:backward']);
-         var maxspeedLanes = {};
-         maxspeedLanes.unspecified = parseMaxspeedLanes(tags['maxspeed:lanes'], maxspeed);
-         maxspeedLanes.forward = parseMaxspeedLanes(tags['maxspeed:lanes:forward'], maxspeed);
-         maxspeedLanes.backward = parseMaxspeedLanes(tags['maxspeed:lanes:backward'], maxspeed);
-         var psvLanes = {};
-         psvLanes.unspecified = parseMiscLanes(tags['psv:lanes']);
-         psvLanes.forward = parseMiscLanes(tags['psv:lanes:forward']);
-         psvLanes.backward = parseMiscLanes(tags['psv:lanes:backward']);
-         var busLanes = {};
-         busLanes.unspecified = parseMiscLanes(tags['bus:lanes']);
-         busLanes.forward = parseMiscLanes(tags['bus:lanes:forward']);
-         busLanes.backward = parseMiscLanes(tags['bus:lanes:backward']);
-         var taxiLanes = {};
-         taxiLanes.unspecified = parseMiscLanes(tags['taxi:lanes']);
-         taxiLanes.forward = parseMiscLanes(tags['taxi:lanes:forward']);
-         taxiLanes.backward = parseMiscLanes(tags['taxi:lanes:backward']);
-         var hovLanes = {};
-         hovLanes.unspecified = parseMiscLanes(tags['hov:lanes']);
-         hovLanes.forward = parseMiscLanes(tags['hov:lanes:forward']);
-         hovLanes.backward = parseMiscLanes(tags['hov:lanes:backward']);
-         var hgvLanes = {};
-         hgvLanes.unspecified = parseMiscLanes(tags['hgv:lanes']);
-         hgvLanes.forward = parseMiscLanes(tags['hgv:lanes:forward']);
-         hgvLanes.backward = parseMiscLanes(tags['hgv:lanes:backward']);
-         var bicyclewayLanes = {};
-         bicyclewayLanes.unspecified = parseBicycleWay(tags['bicycleway:lanes']);
-         bicyclewayLanes.forward = parseBicycleWay(tags['bicycleway:lanes:forward']);
-         bicyclewayLanes.backward = parseBicycleWay(tags['bicycleway:lanes:backward']);
-         var lanesObj = {
-           forward: [],
-           backward: [],
-           unspecified: []
-         }; // map forward/backward/unspecified of each lane type to lanesObj
-
-         mapToLanesObj(lanesObj, turnLanes, 'turnLane');
-         mapToLanesObj(lanesObj, maxspeedLanes, 'maxspeed');
-         mapToLanesObj(lanesObj, psvLanes, 'psv');
-         mapToLanesObj(lanesObj, busLanes, 'bus');
-         mapToLanesObj(lanesObj, taxiLanes, 'taxi');
-         mapToLanesObj(lanesObj, hovLanes, 'hov');
-         mapToLanesObj(lanesObj, hgvLanes, 'hgv');
-         mapToLanesObj(lanesObj, bicyclewayLanes, 'bicycleway');
-         return {
-           metadata: {
-             count: laneCount,
-             oneway: isOneWay,
-             forward: forward,
-             backward: backward,
-             bothways: bothways,
-             turnLanes: turnLanes,
-             maxspeed: maxspeed,
-             maxspeedLanes: maxspeedLanes,
-             psvLanes: psvLanes,
-             busLanes: busLanes,
-             taxiLanes: taxiLanes,
-             hovLanes: hovLanes,
-             hgvLanes: hgvLanes,
-             bicyclewayLanes: bicyclewayLanes
-           },
-           lanes: lanesObj
-         };
-       }
-
-       function getLaneCount(tags, isOneWay) {
-         var count;
-
-         if (tags.lanes) {
-           count = parseInt(tags.lanes, 10);
-
-           if (count > 0) {
-             return count;
-           }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SS",
+           iso1A3: "SSD",
+           iso1N3: "728",
+           wikidata: "Q958",
+           nameEn: "South Sudan",
+           groups: ["014", "202", "002", "UN"],
+           callingCodes: ["211"]
+         },
+         geometry: {
+           type: "MultiPolygon",
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+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "ST",
+           iso1A3: "STP",
+           iso1N3: "678",
+           wikidata: "Q1039",
+           nameEn: "S\xE3o Tom\xE9 and Principe",
+           groups: ["017", "202", "002", "UN"],
+           callingCodes: ["239"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[4.34149, 1.91417], [6.6507, -0.28606], [7.9035, 1.92304], [4.34149, 1.91417]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SV",
+           iso1A3: "SLV",
+           iso1N3: "222",
+           wikidata: "Q792",
+           nameEn: "El Salvador",
+           groups: ["013", "003", "419", "019", "UN"],
+           callingCodes: ["503"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-89.34776, 14.43013], [-89.39028, 14.44561], [-89.57441, 14.41637], [-89.58814, 14.33165], [-89.50614, 14.26084], [-89.52397, 14.22628], [-89.61844, 14.21937], [-89.70756, 14.1537], [-89.75569, 14.07073], [-89.73251, 14.04133], [-89.76103, 14.02923], [-89.81807, 14.07073], [-89.88937, 14.0396], [-90.10505, 13.85104], [-90.11344, 13.73679], [-90.55276, 12.8866], [-88.11443, 12.63306], [-87.7346, 13.13228], [-87.55124, 13.12523], [-87.69751, 13.25228], [-87.73714, 13.32715], [-87.80177, 13.35689], [-87.84675, 13.41078], [-87.83467, 13.44655], [-87.77354, 13.45767], [-87.73841, 13.44169], [-87.72115, 13.46083], [-87.71657, 13.50577], [-87.78148, 13.52906], [-87.73106, 13.75443], [-87.68821, 13.80829], [-87.7966, 13.91353], [-88.00331, 13.86948], [-88.07641, 13.98447], [-88.23018, 13.99915], [-88.25791, 13.91108], [-88.48982, 13.86458], [-88.49738, 13.97224], [-88.70661, 14.04317], [-88.73182, 14.10919], [-88.815, 14.11652], [-88.85785, 14.17763], [-88.94608, 14.20207], [-89.04187, 14.33644], [-89.34776, 14.43013]]]]

          }
          }

-
-         switch (tags.highway) {
-           case 'trunk':
-           case 'motorway':
-             count = isOneWay ? 2 : 4;
-             break;
-
-           default:
-             count = isOneWay ? 1 : 2;
-             break;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SX",
+           iso1A3: "SXM",
+           iso1N3: "534",
+           wikidata: "Q26273",
+           nameEn: "Sint Maarten",
+           aliases: ["NL-SX"],
+           country: "NL",
+           groups: ["Q1451600", "029", "003", "419", "019", "UN"],
+           callingCodes: ["1 721"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-63.33064, 17.9615], [-63.1055, 17.86651], [-62.93924, 18.02904], [-63.02323, 18.05757], [-63.04039, 18.05619], [-63.0579, 18.06614], [-63.07759, 18.04943], [-63.09686, 18.04608], [-63.11042, 18.05339], [-63.13502, 18.05445], [-63.33064, 17.9615]]]]

          }
          }

-
-         return count;
-       }
-
-       function parseMaxspeed(tags) {
-         var maxspeed = tags.maxspeed;
-         if (!maxspeed) return;
-         var maxspeedRegex = /^([0-9][\.0-9]+?)(?:[ ]?(?:km\/h|kmh|kph|mph|knots))?$/;
-         if (!maxspeedRegex.test(maxspeed)) return;
-         return parseInt(maxspeed, 10);
-       }
-
-       function parseLaneDirections(tags, isOneWay, laneCount) {
-         var forward = parseInt(tags['lanes:forward'], 10);
-         var backward = parseInt(tags['lanes:backward'], 10);
-         var bothways = parseInt(tags['lanes:both_ways'], 10) > 0 ? 1 : 0;
-
-         if (parseInt(tags.oneway, 10) === -1) {
-           forward = 0;
-           bothways = 0;
-           backward = laneCount;
-         } else if (isOneWay) {
-           forward = laneCount;
-           bothways = 0;
-           backward = 0;
-         } else if (isNaN(forward) && isNaN(backward)) {
-           backward = Math.floor((laneCount - bothways) / 2);
-           forward = laneCount - bothways - backward;
-         } else if (isNaN(forward)) {
-           if (backward > laneCount - bothways) {
-             backward = laneCount - bothways;
-           }
-
-           forward = laneCount - bothways - backward;
-         } else if (isNaN(backward)) {
-           if (forward > laneCount - bothways) {
-             forward = laneCount - bothways;
-           }
-
-           backward = laneCount - bothways - forward;
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SY",
+           iso1A3: "SYR",
+           iso1N3: "760",
+           wikidata: "Q858",
+           nameEn: "Syria",
+           groups: ["145", "142", "UN"],
+           callingCodes: ["963"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[42.23683, 37.2863], [42.21548, 37.28026], [42.20454, 37.28715], [42.22381, 37.30238], [42.22257, 37.31395], [42.2112, 37.32491], [42.19301, 37.31323], [42.18225, 37.28569], [42.00894, 37.17209], [41.515, 37.08084], [41.21937, 37.07665], [40.90856, 37.13147], [40.69136, 37.0996], [39.81589, 36.75538], [39.21538, 36.66834], [39.03217, 36.70911], [38.74042, 36.70629], [38.55908, 36.84429], [38.38859, 36.90064], [38.21064, 36.91842], [37.81974, 36.76055], [37.68048, 36.75065], [37.49103, 36.66904], [37.47253, 36.63243], [37.21988, 36.6736], [37.16177, 36.66069], [37.10894, 36.6704], [37.08279, 36.63495], [37.02088, 36.66422], [37.01647, 36.69512], [37.04619, 36.71101], [37.04399, 36.73483], [36.99886, 36.74012], [36.99557, 36.75997], [36.66727, 36.82901], [36.61581, 36.74629], [36.62681, 36.71189], [36.57398, 36.65186], [36.58829, 36.58295], [36.54206, 36.49539], [36.6081, 36.33772], [36.65653, 36.33861], [36.68672, 36.23677], [36.6125, 36.22592], [36.50463, 36.2419], [36.4617, 36.20461], [36.39206, 36.22088], [36.37474, 36.01163], [36.33956, 35.98687], [36.30099, 36.00985], [36.28338, 36.00273], [36.29769, 35.96086], [36.27678, 35.94839], [36.25366, 35.96264], [36.19973, 35.95195], [36.17441, 35.92076], [36.1623, 35.80925], [36.14029, 35.81015], [36.13919, 35.83692], [36.11827, 35.85923], [35.99829, 35.88242], [36.01844, 35.92403], [36.00514, 35.94113], [35.98499, 35.94107], [35.931, 35.92109], [35.51152, 36.10954], [35.48515, 34.70851], [35.97386, 34.63322], [35.98718, 34.64977], [36.29165, 34.62991], [36.32399, 34.69334], [36.35135, 34.68516], [36.35384, 34.65447], [36.42941, 34.62505], [36.46003, 34.6378], [36.45299, 34.59438], [36.41429, 34.61175], [36.39846, 34.55672], [36.3369, 34.52629], [36.34745, 34.5002], [36.4442, 34.50165], [36.46179, 34.46541], [36.55853, 34.41609], [36.53039, 34.3798], [36.56556, 34.31881], [36.60778, 34.31009], [36.58667, 34.27667], [36.59195, 34.2316], [36.62537, 34.20251], [36.5128, 34.09916], [36.50576, 34.05982], [36.41078, 34.05253], [36.28589, 33.91981], [36.38263, 33.86579], [36.3967, 33.83365], [36.14517, 33.85118], [36.06778, 33.82927], [35.9341, 33.6596], [36.05723, 33.57904], [35.94465, 33.52774], [35.94816, 33.47886], [35.88668, 33.43183], [35.82577, 33.40479], [35.81324, 33.36354], [35.77477, 33.33609], [35.813, 33.3172], [35.77513, 33.27342], [35.81295, 33.24841], [35.81647, 33.2028], [35.83846, 33.19397], [35.84285, 33.16673], [35.81911, 33.1336], [35.81911, 33.11077], [35.84802, 33.1031], [35.87188, 32.98028], [35.89298, 32.9456], [35.87012, 32.91976], [35.84021, 32.8725], [35.83758, 32.82817], [35.78745, 32.77938], [35.75983, 32.74803], [35.88405, 32.71321], [35.93307, 32.71966], [35.96633, 32.66237], [36.02239, 32.65911], [36.08074, 32.51463], [36.20379, 32.52751], [36.20875, 32.49529], [36.23948, 32.50108], [36.40959, 32.37908], [36.83946, 32.31293], [38.79171, 33.37328], [40.64314, 34.31604], [40.97676, 34.39788], [41.12388, 34.65742], [41.2345, 34.80049], [41.21654, 35.1508], [41.26569, 35.42708], [41.38184, 35.62502], [41.37027, 35.84095], [41.2564, 36.06012], [41.28864, 36.35368], [41.40058, 36.52502], [41.81736, 36.58782], [42.36697, 37.0627], [42.35724, 37.10998], [42.32313, 37.17814], [42.34735, 37.22548], [42.2824, 37.2798], [42.26039, 37.27017], [42.23683, 37.2863]]]]

          }
          }

+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "SZ",
+           iso1A3: "SWZ",
+           iso1N3: "748",
+           wikidata: "Q1050",
+           nameEn: "Eswatini",
+           aliases: ["Swaziland"],
+           groups: ["018", "202", "002", "UN"],
+           driveSide: "left",
+           callingCodes: ["268"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[31.86881, -25.99973], [31.4175, -25.71886], [31.31237, -25.7431], [31.13073, -25.91558], [30.95819, -26.26303], [30.78927, -26.48271], [30.81101, -26.84722], [30.88826, -26.79622], [30.97757, -26.92706], [30.96088, -27.0245], [31.15027, -27.20151], [31.49834, -27.31549], [31.97592, -27.31675], [31.97463, -27.11057], [32.00893, -26.8096], [32.09664, -26.80721], [32.13315, -26.84345], [32.13409, -26.5317], [32.07352, -26.40185], [32.10435, -26.15656], [32.08599, -26.00978], [32.00916, -25.999], [31.974, -25.95387], [31.86881, -25.99973]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "TA",
+           iso1A3: "TAA",
+           wikidata: "Q220982",
+           nameEn: "Tristan da Cunha",
+           aliases: ["SH-TA"],
+           country: "GB",
+           groups: ["SH", "BOTS", "011", "202", "002", "UN"],
+           isoStatus: "excRes",
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["290 8", "44 20"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-13.38232, -34.07258], [-16.67337, -41.9188], [-5.88482, -41.4829], [-13.38232, -34.07258]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "TC",
+           iso1A3: "TCA",
+           iso1N3: "796",
+           wikidata: "Q18221",
+           nameEn: "Turks and Caicos Islands",
+           country: "GB",
+           groups: ["BOTS", "029", "003", "419", "019", "UN"],
+           driveSide: "left",
+           roadSpeedUnit: "mph",
+           roadHeightUnit: "ft",
+           callingCodes: ["1 649"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[-71.70065, 25.7637], [-72.98446, 20.4801], [-69.80718, 21.35956], [-71.70065, 25.7637]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "TD",
+           iso1A3: "TCD",
+           iso1N3: "148",
+           wikidata: "Q657",
+           nameEn: "Chad",
+           groups: ["017", "202", "002", "UN"],
+           callingCodes: ["235"]
+         },
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+         type: "Feature",
+         properties: {
+           iso1A2: "ZM",
+           iso1A3: "ZMB",
+           iso1N3: "894",
+           wikidata: "Q953",
+           nameEn: "Zambia",
+           groups: ["014", "202", "002", "UN"],
+           driveSide: "left",
+           callingCodes: ["260"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[32.95389, -9.40138], [32.76233, -9.31963], [32.75611, -9.28583], [32.53661, -9.24281], [32.49147, -9.14754], [32.43543, -9.11988], [32.25486, -9.13371], [32.16146, -9.05993], [32.08206, -9.04609], [31.98866, -9.07069], [31.94196, -9.02303], [31.94663, -8.93846], [31.81587, -8.88618], [31.71158, -8.91386], [31.57147, -8.81388], [31.57147, -8.70619], [31.37533, -8.60769], [31.00796, -8.58615], [30.79243, -8.27382], [28.88917, -8.4831], [28.9711, -8.66935], [28.38526, -9.23393], [28.36562, -9.30091], [28.52636, -9.35379], [28.51627, -9.44726], [28.56208, -9.49122], [28.68532, -9.78], [28.62795, -9.92942], [28.65032, -10.65133], [28.37241, -11.57848], [28.48357, -11.87532], [29.18592, -12.37921], [29.4992, -12.43843], [29.48404, -12.23604], [29.8139, -12.14898], [29.81551, -13.44683], [29.65078, -13.41844], [29.60531, -13.21685], [29.01918, -13.41353], [28.33199, -12.41375], [27.59932, -12.22123], [27.21025, -11.76157], [27.22541, -11.60323], [27.04351, -11.61312], [26.88687, -12.01868], [26.01777, -11.91488], [25.33058, -11.65767], [25.34069, -11.19707], [24.42612, -11.44975], [24.34528, -11.06816], [24.00027, -10.89356], [24.02603, -11.15368], [23.98804, -12.13149], [24.06672, -12.29058], [23.90937, -12.844], [24.03339, -12.99091], [21.97988, -13.00148], [22.00323, -16.18028], [22.17217, -16.50269], [23.20038, -17.47563], [23.47474, -17.62877], [24.23619, -17.47489], [24.32811, -17.49082], [24.38712, -17.46818], [24.5621, -17.52963], [24.70864, -17.49501], [25.00198, -17.58221], [25.26433, -17.79571], [25.51646, -17.86232], [25.6827, -17.81987], [25.85738, -17.91403], [25.85892, -17.97726], [26.08925, -17.98168], [26.0908, -17.93021], [26.21601, -17.88608], [26.55918, -17.99638], [26.68403, -18.07411], [26.74314, -18.0199], [26.89926, -17.98756], [27.14196, -17.81398], [27.30736, -17.60487], [27.61377, -17.34378], [27.62795, -17.24365], [27.83141, -16.96274], [28.73725, -16.5528], [28.76199, -16.51575], [28.81454, -16.48611], [28.8501, -16.04537], [28.9243, -15.93987], [29.01298, -15.93805], [29.21955, -15.76589], [29.4437, -15.68702], [29.8317, -15.6126], [30.35574, -15.6513], [30.41902, -15.62269], [30.22098, -14.99447], [33.24249, -14.00019], [33.16749, -13.93992], [33.07568, -13.98447], [33.02977, -14.05022], [32.99042, -13.95689], [32.88985, -13.82956], [32.79015, -13.80755], [32.76962, -13.77224], [32.84528, -13.71576], [32.7828, -13.64805], [32.68654, -13.64268], [32.66468, -13.60019], [32.68436, -13.55769], [32.73683, -13.57682], [32.84176, -13.52794], [32.86113, -13.47292], [33.0078, -13.19492], [32.98289, -13.12671], [33.02181, -12.88707], [32.96733, -12.88251], [32.94397, -12.76868], [33.05917, -12.59554], [33.18837, -12.61377], [33.28177, -12.54692], [33.37517, -12.54085], [33.54485, -12.35996], [33.47636, -12.32498], [33.3705, -12.34931], [33.25998, -12.14242], [33.33937, -11.91252], [33.32692, -11.59248], [33.24252, -11.59302], [33.23663, -11.40637], [33.29267, -11.43536], [33.29267, -11.3789], [33.39697, -11.15296], [33.25998, -10.88862], [33.28022, -10.84428], [33.47636, -10.78465], [33.70675, -10.56896], [33.54797, -10.36077], [33.53863, -10.20148], [33.31297, -10.05133], [33.37902, -9.9104], [33.36581, -9.81063], [33.31517, -9.82364], [33.2095, -9.61099], [33.12144, -9.58929], [33.10163, -9.66525], [33.05485, -9.61316], [33.00256, -9.63053], [33.00476, -9.5133], [32.95389, -9.40138]]]]
+         }
+       }, {
+         type: "Feature",
+         properties: {
+           iso1A2: "ZW",
+           iso1A3: "ZWE",
+           iso1N3: "716",
+           wikidata: "Q954",
+           nameEn: "Zimbabwe",
+           groups: ["014", "202", "002", "UN"],
+           driveSide: "left",
+           callingCodes: ["263"]
+         },
+         geometry: {
+           type: "MultiPolygon",
+           coordinates: [[[[30.41902, -15.62269], [30.35574, -15.6513], [29.8317, -15.6126], [29.4437, -15.68702], [29.21955, -15.76589], [29.01298, -15.93805], [28.9243, -15.93987], [28.8501, -16.04537], [28.81454, -16.48611], [28.76199, -16.51575], [28.73725, -16.5528], [27.83141, -16.96274], [27.62795, -17.24365], [27.61377, -17.34378], [27.30736, -17.60487], [27.14196, -17.81398], [26.89926, -17.98756], [26.74314, -18.0199], [26.68403, -18.07411], [26.55918, -17.99638], [26.21601, -17.88608], [26.0908, -17.93021], [26.08925, -17.98168], [25.85892, -17.97726], [25.85738, -17.91403], [25.6827, -17.81987], [25.51646, -17.86232], [25.26433, -17.79571], [25.23909, -17.90832], [25.31799, -18.07091], [25.39972, -18.12691], [25.53465, -18.39041], [25.68859, -18.56165], [25.79217, -18.6355], [25.82353, -18.82808], [25.94326, -18.90362], [25.99837, -19.02943], [25.96226, -19.08152], [26.17227, -19.53709], [26.72246, -19.92707], [27.21278, -20.08244], [27.29831, -20.28935], [27.28865, -20.49873], [27.69361, -20.48531], [27.72972, -20.51735], [27.69171, -21.08409], [27.91407, -21.31621], [28.01669, -21.57624], [28.29416, -21.59037], [28.49942, -21.66634], [28.58114, -21.63455], [29.07763, -21.81877], [29.04023, -21.85864], [29.02191, -21.90647], [29.02191, -21.95665], [29.04108, -22.00563], [29.08495, -22.04867], [29.14501, -22.07275], [29.1974, -22.07472], [29.24648, -22.05967], [29.3533, -22.18363], [29.37703, -22.19581], [29.64609, -22.12917], [29.76848, -22.14128], [29.92242, -22.19408], [30.13147, -22.30841], [30.2265, -22.2961], [30.28351, -22.35587], [30.38614, -22.34533], [30.48686, -22.31368], [30.6294, -22.32599], [30.86696, -22.28907], [31.08932, -22.34884], [31.16344, -22.32599], [31.30611, -22.422], [31.38336, -22.36919], [32.41234, -21.31246], [32.48236, -21.32873], [32.37115, -21.133], [32.51644, -20.91929], [32.48122, -20.63319], [32.55167, -20.56312], [32.66174, -20.56106], [32.85987, -20.27841], [32.85987, -20.16686], [32.93032, -20.03868], [33.01178, -20.02007], [33.06461, -19.77787], [32.95013, -19.67219], [32.84666, -19.68462], [32.84446, -19.48343], [32.78282, -19.47513], [32.77966, -19.36098], [32.85107, -19.29238], [32.87088, -19.09279], [32.84006, -19.0262], [32.72118, -19.02204], [32.69917, -18.94293], [32.73439, -18.92628], [32.70137, -18.84712], [32.82465, -18.77419], [32.9017, -18.7992], [32.95013, -18.69079], [32.88629, -18.58023], [32.88629, -18.51344], [33.02278, -18.4696], [33.03159, -18.35054], [32.94133, -17.99705], [33.0492, -17.60298], [32.98536, -17.55891], [32.96554, -17.48964], [33.0426, -17.3468], [33.00517, -17.30477], [32.96554, -17.11971], [32.84113, -16.92259], [32.91051, -16.89446], [32.97655, -16.70689], [32.78943, -16.70267], [32.69917, -16.66893], [32.71017, -16.59932], [32.42838, -16.4727], [32.28529, -16.43892], [32.02772, -16.43892], [31.91324, -16.41569], [31.90223, -16.34388], [31.67988, -16.19595], [31.42451, -16.15154], [31.30563, -16.01193], [31.13171, -15.98019], [30.97761, -16.05848], [30.91597, -15.99924], [30.42568, -15.9962], [30.41902, -15.62269]]]]
+         }
+       }];
+       var borders_default = {
+         type: type,
+         features: features
+       }; // src/country-coder.ts

 
 

-         return {
-           forward: forward,
-           backward: backward,
-           bothways: bothways
-         };
-       }
-
-       function parseTurnLanes(tag) {
-         if (!tag) return;
-         var validValues = ['left', 'slight_left', 'sharp_left', 'through', 'right', 'slight_right', 'sharp_right', 'reverse', 'merge_to_left', 'merge_to_right', 'none'];
-         return tag.split('|').map(function (s) {
-           if (s === '') s = 'none';
-           return s.split(';').map(function (d) {
-             return validValues.indexOf(d) === -1 ? 'unknown' : d;
-           });
-         });
-       }
+       var borders = borders_default;
+       var whichPolygonGetter = {};
+       var featuresByCode = {};
+       var idFilterRegex = /(?=(?!^(and|the|of|el|la|de)$))(\b(and|the|of|el|la|de)\b)|[-_ .,'()&[\]/]/gi;

 
 

-       function parseMaxspeedLanes(tag, maxspeed) {
-         if (!tag) return;
-         return tag.split('|').map(function (s) {
-           if (s === 'none') return s;
-           var m = parseInt(s, 10);
-           if (s === '' || m === maxspeed) return null;
-           return isNaN(m) ? 'unknown' : m;
-         });
-       }
+       function canonicalID(id) {
+         var s = id || "";

 
 

-       function parseMiscLanes(tag) {
-         if (!tag) return;
-         var validValues = ['yes', 'no', 'designated'];
-         return tag.split('|').map(function (s) {
-           if (s === '') s = 'no';
-           return validValues.indexOf(s) === -1 ? 'unknown' : s;
-         });
+         if (s.charAt(0) === ".") {
+           return s.toUpperCase();
+         } else {
+           return s.replace(idFilterRegex, "").toUpperCase();
+         }

        }
 
        }
 

-       function parseBicycleWay(tag) {
-         if (!tag) return;
-         var validValues = ['yes', 'no', 'designated', 'lane'];
-         return tag.split('|').map(function (s) {
-           if (s === '') s = 'no';
-           return validValues.indexOf(s) === -1 ? 'unknown' : s;
-         });
-       }
+       var levels = ["subterritory", "territory", "subcountryGroup", "country", "sharedLandform", "intermediateRegion", "subregion", "region", "subunion", "union", "unitedNations", "world"];
+       loadDerivedDataAndCaches(borders);

 
 

-       function mapToLanesObj(lanesObj, data, key) {
-         if (data.forward) data.forward.forEach(function (l, i) {
-           if (!lanesObj.forward[i]) lanesObj.forward[i] = {};
-           lanesObj.forward[i][key] = l;
-         });
-         if (data.backward) data.backward.forEach(function (l, i) {
-           if (!lanesObj.backward[i]) lanesObj.backward[i] = {};
-           lanesObj.backward[i][key] = l;
-         });
-         if (data.unspecified) data.unspecified.forEach(function (l, i) {
-           if (!lanesObj.unspecified[i]) lanesObj.unspecified[i] = {};
-           lanesObj.unspecified[i][key] = l;
-         });
-       }
+       function loadDerivedDataAndCaches(borders2) {
+         var identifierProps = ["iso1A2", "iso1A3", "m49", "wikidata", "emojiFlag", "ccTLD", "nameEn"];
+         var geometryFeatures = [];

 
 

-       function osmWay() {
-         if (!(this instanceof osmWay)) {
-           return new osmWay().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
+         for (var i in borders2.features) {
+           var feature2 = borders2.features[i];
+           feature2.properties.id = feature2.properties.iso1A2 || feature2.properties.m49 || feature2.properties.wikidata;
+           loadM49(feature2);
+           loadTLD(feature2);
+           loadIsoStatus(feature2);
+           loadLevel(feature2);
+           loadGroups(feature2);
+           loadFlag(feature2);
+           cacheFeatureByIDs(feature2);
+           if (feature2.geometry) geometryFeatures.push(feature2);

          }
          }

-       }
-       osmEntity.way = osmWay;
-       osmWay.prototype = Object.create(osmEntity.prototype);
-       Object.assign(osmWay.prototype, {
-         type: 'way',
-         nodes: [],
-         copy: function copy(resolver, copies) {
-           if (copies[this.id]) return copies[this.id];
-           var copy = osmEntity.prototype.copy.call(this, resolver, copies);
-           var nodes = this.nodes.map(function (id) {
-             return resolver.entity(id).copy(resolver, copies).id;
-           });
-           copy = copy.update({
-             nodes: nodes
-           });
-           copies[this.id] = copy;
-           return copy;
-         },
-         extent: function extent(resolver) {
-           return resolver["transient"](this, 'extent', function () {
-             var extent = geoExtent();

 
 

-             for (var i = 0; i < this.nodes.length; i++) {
-               var node = resolver.hasEntity(this.nodes[i]);
-
-               if (node) {
-                 extent._extend(node.extent());
-               }
-             }
-
-             return extent;
+         for (var _i in borders2.features) {
+           var _feature = borders2.features[_i];
+           _feature.properties.groups = _feature.properties.groups.map(function (groupID) {
+             return featuresByCode[groupID].properties.id;

            });
            });

-         },
-         first: function first() {
-           return this.nodes[0];
-         },
-         last: function last() {
-           return this.nodes[this.nodes.length - 1];
-         },
-         contains: function contains(node) {
-           return this.nodes.indexOf(node) >= 0;
-         },
-         affix: function affix(node) {
-           if (this.nodes[0] === node) return 'prefix';
-           if (this.nodes[this.nodes.length - 1] === node) return 'suffix';
-         },
-         layer: function layer() {
-           // explicit layer tag, clamp between -10, 10..
-           if (isFinite(this.tags.layer)) {
-             return Math.max(-10, Math.min(+this.tags.layer, 10));
-           } // implied layer tag..
-
-
-           if (this.tags.covered === 'yes') return -1;
-           if (this.tags.location === 'overground') return 1;
-           if (this.tags.location === 'underground') return -1;
-           if (this.tags.location === 'underwater') return -10;
-           if (this.tags.power === 'line') return 10;
-           if (this.tags.power === 'minor_line') return 10;
-           if (this.tags.aerialway) return 10;
-           if (this.tags.bridge) return 1;
-           if (this.tags.cutting) return -1;
-           if (this.tags.tunnel) return -1;
-           if (this.tags.waterway) return -1;
-           if (this.tags.man_made === 'pipeline') return -10;
-           if (this.tags.boundary) return -10;
-           return 0;
-         },
-         // the approximate width of the line based on its tags except its `width` tag
-         impliedLineWidthMeters: function impliedLineWidthMeters() {
-           var averageWidths = {
-             highway: {
-               // width is for single lane
-               motorway: 5,
-               motorway_link: 5,
-               trunk: 4.5,
-               trunk_link: 4.5,
-               primary: 4,
-               secondary: 4,
-               tertiary: 4,
-               primary_link: 4,
-               secondary_link: 4,
-               tertiary_link: 4,
-               unclassified: 4,
-               road: 4,
-               living_street: 4,
-               bus_guideway: 4,
-               pedestrian: 4,
-               residential: 3.5,
-               service: 3.5,
-               track: 3,
-               cycleway: 2.5,
-               bridleway: 2,
-               corridor: 2,
-               steps: 2,
-               path: 1.5,
-               footway: 1.5
-             },
-             railway: {
-               // width includes ties and rail bed, not just track gauge
-               rail: 2.5,
-               light_rail: 2.5,
-               tram: 2.5,
-               subway: 2.5,
-               monorail: 2.5,
-               funicular: 2.5,
-               disused: 2.5,
-               preserved: 2.5,
-               miniature: 1.5,
-               narrow_gauge: 1.5
-             },
-             waterway: {
-               river: 50,
-               canal: 25,
-               stream: 5,
-               tidal_channel: 5,
-               fish_pass: 2.5,
-               drain: 2.5,
-               ditch: 1.5
-             }
-           };
-
-           for (var key in averageWidths) {
-             if (this.tags[key] && averageWidths[key][this.tags[key]]) {
-               var width = averageWidths[key][this.tags[key]];
-
-               if (key === 'highway') {
-                 var laneCount = this.tags.lanes && parseInt(this.tags.lanes, 10);
-                 if (!laneCount) laneCount = this.isOneWay() ? 1 : 2;
-                 return width * laneCount;
-               }
-
-               return width;
-             }
-           }
-
-           return null;
-         },
-         isOneWay: function isOneWay() {
-           // explicit oneway tag..
-           var values = {
-             'yes': true,
-             '1': true,
-             '-1': true,
-             'reversible': true,
-             'alternating': true,
-             'no': false,
-             '0': false
-           };
+           loadMembersForGroupsOf(_feature);
+         }

 
 

-           if (values[this.tags.oneway] !== undefined) {
-             return values[this.tags.oneway];
-           } // implied oneway tag..
+         for (var _i2 in borders2.features) {
+           var _feature2 = borders2.features[_i2];
+           loadRoadSpeedUnit(_feature2);
+           loadRoadHeightUnit(_feature2);
+           loadDriveSide(_feature2);
+           loadCallingCodes(_feature2);
+           loadGroupGroups(_feature2);
+         }

 
 

+         for (var _i3 in borders2.features) {
+           var _feature3 = borders2.features[_i3];

 
 

-           for (var key in this.tags) {
-             if (key in osmOneWayTags && this.tags[key] in osmOneWayTags[key]) return true;
-           }
+           _feature3.properties.groups.sort(function (groupID1, groupID2) {
+             return levels.indexOf(featuresByCode[groupID1].properties.level) - levels.indexOf(featuresByCode[groupID2].properties.level);
+           });

 
 

-           return false;
-         },
-         // Some identifier for tag that implies that this way is "sided",
-         // i.e. the right side is the 'inside' (e.g. the right side of a
-         // natural=cliff is lower).
-         sidednessIdentifier: function sidednessIdentifier() {
-           for (var key in this.tags) {
-             var value = this.tags[key];
+           if (_feature3.properties.members) _feature3.properties.members.sort(function (id1, id2) {
+             var diff = levels.indexOf(featuresByCode[id1].properties.level) - levels.indexOf(featuresByCode[id2].properties.level);

 
 

-             if (key in osmRightSideIsInsideTags && value in osmRightSideIsInsideTags[key]) {
-               if (osmRightSideIsInsideTags[key][value] === true) {
-                 return key;
-               } else {
-                 // if the map's value is something other than a
-                 // literal true, we should use it so we can
-                 // special case some keys (e.g. natural=coastline
-                 // is handled differently to other naturals).
-                 return osmRightSideIsInsideTags[key][value];
-               }
+             if (diff === 0) {
+               return borders2.features.indexOf(featuresByCode[id1]) - borders2.features.indexOf(featuresByCode[id2]);

              }
              }

-           }
-
-           return null;
-         },
-         isSided: function isSided() {
-           if (this.tags.two_sided === 'yes') {
-             return false;
-           }

 
 

-           return this.sidednessIdentifier() !== null;
-         },
-         lanes: function lanes() {
-           return osmLanes(this);
-         },
-         isClosed: function isClosed() {
-           return this.nodes.length > 1 && this.first() === this.last();
-         },
-         isConvex: function isConvex(resolver) {
-           if (!this.isClosed() || this.isDegenerate()) return null;
-           var nodes = utilArrayUniq(resolver.childNodes(this));
-           var coords = nodes.map(function (n) {
-             return n.loc;
+             return diff;

            });
            });

-           var curr = 0;
-           var prev = 0;
-
-           for (var i = 0; i < coords.length; i++) {
-             var o = coords[(i + 1) % coords.length];
-             var a = coords[i];
-             var b = coords[(i + 2) % coords.length];
-             var res = geoVecCross(a, b, o);
-             curr = res > 0 ? 1 : res < 0 ? -1 : 0;
+         }

 
 

-             if (curr === 0) {
-               continue;
-             } else if (prev && curr !== prev) {
-               return false;
-             }
+         var geometryOnlyCollection = {
+           type: "FeatureCollection",
+           features: geometryFeatures
+         };
+         whichPolygonGetter = whichPolygon_1(geometryOnlyCollection);

 
 

-             prev = curr;
-           }
+         function loadGroups(feature2) {
+           var props = feature2.properties;

 
 

-           return true;
-         },
-         // returns an object with the tag that implies this is an area, if any
-         tagSuggestingArea: function tagSuggestingArea() {
-           return osmTagSuggestingArea(this.tags);
-         },
-         isArea: function isArea() {
-           if (this.tags.area === 'yes') return true;
-           if (!this.isClosed() || this.tags.area === 'no') return false;
-           return this.tagSuggestingArea() !== null;
-         },
-         isDegenerate: function isDegenerate() {
-           return new Set(this.nodes).size < (this.isArea() ? 3 : 2);
-         },
-         areAdjacent: function areAdjacent(n1, n2) {
-           for (var i = 0; i < this.nodes.length; i++) {
-             if (this.nodes[i] === n1) {
-               if (this.nodes[i - 1] === n2) return true;
-               if (this.nodes[i + 1] === n2) return true;
-             }
+           if (!props.groups) {
+             props.groups = [];

            }
 
            }
 

-           return false;
-         },
-         geometry: function geometry(graph) {
-           return graph["transient"](this, 'geometry', function () {
-             return this.isArea() ? 'area' : 'line';
-           });
-         },
-         // returns an array of objects representing the segments between the nodes in this way
-         segments: function segments(graph) {
-           function segmentExtent(graph) {
-             var n1 = graph.hasEntity(this.nodes[0]);
-             var n2 = graph.hasEntity(this.nodes[1]);
-             return n1 && n2 && geoExtent([[Math.min(n1.loc[0], n2.loc[0]), Math.min(n1.loc[1], n2.loc[1])], [Math.max(n1.loc[0], n2.loc[0]), Math.max(n1.loc[1], n2.loc[1])]]);
+           if (feature2.geometry && props.country) {
+             props.groups.push(props.country);

            }
 
            }
 

-           return graph["transient"](this, 'segments', function () {
-             var segments = [];
-
-             for (var i = 0; i < this.nodes.length - 1; i++) {
-               segments.push({
-                 id: this.id + '-' + i,
-                 wayId: this.id,
-                 index: i,
-                 nodes: [this.nodes[i], this.nodes[i + 1]],
-                 extent: segmentExtent
-               });
-             }
-
-             return segments;
-           });
-         },
-         // If this way is not closed, append the beginning node to the end of the nodelist to close it.
-         close: function close() {
-           if (this.isClosed() || !this.nodes.length) return this;
-           var nodes = this.nodes.slice();
-           nodes = nodes.filter(noRepeatNodes);
-           nodes.push(nodes[0]);
-           return this.update({
-             nodes: nodes
-           });
-         },
-         // If this way is closed, remove any connector nodes from the end of the nodelist to unclose it.
-         unclose: function unclose() {
-           if (!this.isClosed()) return this;
-           var nodes = this.nodes.slice();
-           var connector = this.first();
-           var i = nodes.length - 1; // remove trailing connectors..
-
-           while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
-             nodes.splice(i, 1);
-             i = nodes.length - 1;
+           if (props.m49 !== "001") {
+             props.groups.push("001");

            }
            }

+         }

 
 

-           nodes = nodes.filter(noRepeatNodes);
-           return this.update({
-             nodes: nodes
-           });
-         },
-         // Adds a node (id) in front of the node which is currently at position index.
-         // If index is undefined, the node will be added to the end of the way for linear ways,
-         //   or just before the final connecting node for circular ways.
-         // Consecutive duplicates are eliminated including existing ones.
-         // Circularity is always preserved when adding a node.
-         addNode: function addNode(id, index) {
-           var nodes = this.nodes.slice();
-           var isClosed = this.isClosed();
-           var max = isClosed ? nodes.length - 1 : nodes.length;
+         function loadM49(feature2) {
+           var props = feature2.properties;

 
 

-           if (index === undefined) {
-             index = max;
+           if (!props.m49 && props.iso1N3) {
+             props.m49 = props.iso1N3;

            }
            }

+         }

 
 

-           if (index < 0 || index > max) {
-             throw new RangeError('index ' + index + ' out of range 0..' + max);
-           } // If this is a closed way, remove all connector nodes except the first one
-           // (there may be duplicates) and adjust index if necessary..
-
-
-           if (isClosed) {
-             var connector = this.first(); // leading connectors..
-
-             var i = 1;
-
-             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-             } // trailing connectors..
-
-
-             i = nodes.length - 1;
+         function loadTLD(feature2) {
+           var props = feature2.properties;
+           if (props.level === "unitedNations") return;

 
 

-             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-               i = nodes.length - 1;
-             }
+           if (!props.ccTLD && props.iso1A2) {
+             props.ccTLD = "." + props.iso1A2.toLowerCase();

            }
            }

+         }

 
 

-           nodes.splice(index, 0, id);
-           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+         function loadIsoStatus(feature2) {
+           var props = feature2.properties;

 
 

-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if (!props.isoStatus && props.iso1A2) {
+             props.isoStatus = "official";

            }
            }

+         }

 
 

-           return this.update({
-             nodes: nodes
-           });
-         },
-         // Replaces the node which is currently at position index with the given node (id).
-         // Consecutive duplicates are eliminated including existing ones.
-         // Circularity is preserved when updating a node.
-         updateNode: function updateNode(id, index) {
-           var nodes = this.nodes.slice();
-           var isClosed = this.isClosed();
-           var max = nodes.length - 1;
-
-           if (index === undefined || index < 0 || index > max) {
-             throw new RangeError('index ' + index + ' out of range 0..' + max);
-           } // If this is a closed way, remove all connector nodes except the first one
-           // (there may be duplicates) and adjust index if necessary..
+         function loadLevel(feature2) {
+           var props = feature2.properties;
+           if (props.level) return;

 
 

+           if (!props.country) {
+             props.level = "country";
+           } else if (!props.iso1A2 || props.isoStatus === "official") {
+             props.level = "territory";
+           } else {
+             props.level = "subterritory";
+           }
+         }

 
 

-           if (isClosed) {
-             var connector = this.first(); // leading connectors..
+         function loadGroupGroups(feature2) {
+           var props = feature2.properties;
+           if (feature2.geometry || !props.members) return;
+           var featureLevelIndex = levels.indexOf(props.level);
+           var sharedGroups = [];

 
 

-             var i = 1;
+           var _loop = function _loop(_i4) {
+             var memberID = props.members[_i4];
+             var member = featuresByCode[memberID];
+             var memberGroups = member.properties.groups.filter(function (groupID) {
+               return groupID !== feature2.properties.id && featureLevelIndex < levels.indexOf(featuresByCode[groupID].properties.level);
+             });

 
 

-             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-             } // trailing connectors..
+             if (_i4 === "0") {
+               sharedGroups = memberGroups;
+             } else {
+               sharedGroups = sharedGroups.filter(function (groupID) {
+                 return memberGroups.indexOf(groupID) !== -1;
+               });
+             }
+           };

 
 

+           for (var _i4 in props.members) {
+             _loop(_i4);
+           }

 
 

-             i = nodes.length - 1;
+           props.groups = props.groups.concat(sharedGroups.filter(function (groupID) {
+             return props.groups.indexOf(groupID) === -1;
+           }));

 
 

-             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index === i) index = 0; // update leading connector instead
+           for (var j in sharedGroups) {
+             var groupFeature = featuresByCode[sharedGroups[j]];

 
 

-               i = nodes.length - 1;
+             if (groupFeature.properties.members.indexOf(props.id) === -1) {
+               groupFeature.properties.members.push(props.id);

              }
            }
              }
            }

+         }

 
 

-           nodes.splice(index, 1, id);
-           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+         function loadRoadSpeedUnit(feature2) {
+           var props = feature2.properties;

 
 

-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if (feature2.geometry) {
+             if (!props.roadSpeedUnit) props.roadSpeedUnit = "km/h";
+           } else if (props.members) {
+             var vals = Array.from(new Set(props.members.map(function (id) {
+               var member = featuresByCode[id];
+               if (member.geometry) return member.properties.roadSpeedUnit || "km/h";
+             }).filter(Boolean)));
+             if (vals.length === 1) props.roadSpeedUnit = vals[0];

            }
            }

+         }

 
 

-           return this.update({
-             nodes: nodes
-           });
-         },
-         // Replaces each occurrence of node id needle with replacement.
-         // Consecutive duplicates are eliminated including existing ones.
-         // Circularity is preserved.
-         replaceNode: function replaceNode(needleID, replacementID) {
-           var nodes = this.nodes.slice();
-           var isClosed = this.isClosed();
+         function loadRoadHeightUnit(feature2) {
+           var props = feature2.properties;

 
 

-           for (var i = 0; i < nodes.length; i++) {
-             if (nodes[i] === needleID) {
-               nodes[i] = replacementID;
-             }
+           if (feature2.geometry) {
+             if (!props.roadHeightUnit) props.roadHeightUnit = "m";
+           } else if (props.members) {
+             var vals = Array.from(new Set(props.members.map(function (id) {
+               var member = featuresByCode[id];
+               if (member.geometry) return member.properties.roadHeightUnit || "m";
+             }).filter(Boolean)));
+             if (vals.length === 1) props.roadHeightUnit = vals[0];

            }
            }

+         }

 
 

-           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+         function loadDriveSide(feature2) {
+           var props = feature2.properties;

 
 

-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if (feature2.geometry) {
+             if (!props.driveSide) props.driveSide = "right";
+           } else if (props.members) {
+             var vals = Array.from(new Set(props.members.map(function (id) {
+               var member = featuresByCode[id];
+               if (member.geometry) return member.properties.driveSide || "right";
+             }).filter(Boolean)));
+             if (vals.length === 1) props.driveSide = vals[0];

            }
            }

+         }

 
 

-           return this.update({
-             nodes: nodes
-           });
-         },
-         // Removes each occurrence of node id.
-         // Consecutive duplicates are eliminated including existing ones.
-         // Circularity is preserved.
-         removeNode: function removeNode(id) {
-           var nodes = this.nodes.slice();
-           var isClosed = this.isClosed();
-           nodes = nodes.filter(function (node) {
-             return node !== id;
-           }).filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+         function loadCallingCodes(feature2) {
+           var props = feature2.properties;

 
 

-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if (!feature2.geometry && props.members) {
+             props.callingCodes = Array.from(new Set(props.members.reduce(function (array, id) {
+               var member = featuresByCode[id];
+               if (member.geometry && member.properties.callingCodes) return array.concat(member.properties.callingCodes);
+               return array;
+             }, [])));

            }
            }

+         }

 
 

-           return this.update({
-             nodes: nodes
+         function loadFlag(feature2) {
+           if (!feature2.properties.iso1A2) return;
+           var flag = feature2.properties.iso1A2.replace(/./g, function (_char) {
+             return String.fromCodePoint(_char.charCodeAt(0) + 127397);

            });
            });

-         },
-         asJXON: function asJXON(changeset_id) {
-           var r = {
-             way: {
-               '@id': this.osmId(),
-               '@version': this.version || 0,
-               nd: this.nodes.map(function (id) {
-                 return {
-                   keyAttributes: {
-                     ref: osmEntity.id.toOSM(id)
-                   }
-                 };
-               }, this),
-               tag: Object.keys(this.tags).map(function (k) {
-                 return {
-                   keyAttributes: {
-                     k: k,
-                     v: this.tags[k]
-                   }
-                 };
-               }, this)
-             }
-           };
+           feature2.properties.emojiFlag = flag;
+         }

 
 

-           if (changeset_id) {
-             r.way['@changeset'] = changeset_id;
+         function loadMembersForGroupsOf(feature2) {
+           for (var j in feature2.properties.groups) {
+             var groupID = feature2.properties.groups[j];
+             var groupFeature = featuresByCode[groupID];
+             if (!groupFeature.properties.members) groupFeature.properties.members = [];
+             groupFeature.properties.members.push(feature2.properties.id);

            }
            }

+         }

 
 

-           return r;
-         },
-         asGeoJSON: function asGeoJSON(resolver) {
-           return resolver["transient"](this, 'GeoJSON', function () {
-             var coordinates = resolver.childNodes(this).map(function (n) {
-               return n.loc;
-             });
+         function cacheFeatureByIDs(feature2) {
+           var ids = [];

 
 

-             if (this.isArea() && this.isClosed()) {
-               return {
-                 type: 'Polygon',
-                 coordinates: [coordinates]
-               };
-             } else {
-               return {
-                 type: 'LineString',
-                 coordinates: coordinates
-               };
-             }
-           });
-         },
-         area: function area(resolver) {
-           return resolver["transient"](this, 'area', function () {
-             var nodes = resolver.childNodes(this);
-             var json = {
-               type: 'Polygon',
-               coordinates: [nodes.map(function (n) {
-                 return n.loc;
-               })]
-             };
+           for (var k in identifierProps) {
+             var prop = identifierProps[k];
+             var id = feature2.properties[prop];
+             if (id) ids.push(id);
+           }

 
 

-             if (!this.isClosed() && nodes.length) {
-               json.coordinates[0].push(nodes[0].loc);
+           if (feature2.properties.aliases) {
+             for (var j in feature2.properties.aliases) {
+               ids.push(feature2.properties.aliases[j]);

              }
              }

+           }

 
 

-             var area = d3_geoArea(json); // Heuristic for detecting counterclockwise winding order. Assumes
-             // that OpenStreetMap polygons are not hemisphere-spanning.
+           for (var _i5 in ids) {
+             var _id = canonicalID(ids[_i5]);

 
 

-             if (area > 2 * Math.PI) {
-               json.coordinates[0] = json.coordinates[0].reverse();
-               area = d3_geoArea(json);
-             }
+             featuresByCode[_id] = feature2;
+           }
+         }
+       }

 
 

-             return isNaN(area) ? 0 : area;
-           });
+       function locArray(loc) {
+         if (Array.isArray(loc)) {
+           return loc;
+         } else if (loc.coordinates) {
+           return loc.coordinates;

          }
          }

-       }); // Filter function to eliminate consecutive duplicates.

 
 

-       function noRepeatNodes(node, i, arr) {
-         return i === 0 || node !== arr[i - 1];
+         return loc.geometry.coordinates;

        }
 
        }
 

-       //
-       // 1. Relation tagged with `type=multipolygon` and no interesting tags.
-       // 2. One and only one member with the `outer` role. Must be a way with interesting tags.
-       // 3. No members without a role.
-       //
-       // Old multipolygons are no longer recommended but are still rendered as areas by iD.
+       function smallestFeature(loc) {
+         var query = locArray(loc);
+         var featureProperties = whichPolygonGetter(query);
+         if (!featureProperties) return null;
+         return featuresByCode[featureProperties.id];
+       }

 
 

-       function osmOldMultipolygonOuterMemberOfRelation(entity, graph) {
-         if (entity.type !== 'relation' || !entity.isMultipolygon() || Object.keys(entity.tags).filter(osmIsInterestingTag).length > 1) {
-           return false;
-         }
+       function countryFeature(loc) {
+         var feature2 = smallestFeature(loc);
+         if (!feature2) return null;
+         var countryCode = feature2.properties.country || feature2.properties.iso1A2;
+         return featuresByCode[countryCode] || null;
+       }

 
 

-         var outerMember;
+       var defaultOpts = {
+         level: void 0,
+         maxLevel: void 0,
+         withProp: void 0
+       };

 
 

-         for (var memberIndex in entity.members) {
-           var member = entity.members[memberIndex];
+       function featureForLoc(loc, opts) {
+         var targetLevel = opts.level || "country";
+         var maxLevel = opts.maxLevel || "world";
+         var withProp = opts.withProp;
+         var targetLevelIndex = levels.indexOf(targetLevel);
+         if (targetLevelIndex === -1) return null;
+         var maxLevelIndex = levels.indexOf(maxLevel);
+         if (maxLevelIndex === -1) return null;
+         if (maxLevelIndex < targetLevelIndex) return null;

 
 

-           if (!member.role || member.role === 'outer') {
-             if (outerMember) return false;
-             if (member.type !== 'way') return false;
-             if (!graph.hasEntity(member.id)) return false;
-             outerMember = graph.entity(member.id);
+         if (targetLevel === "country") {
+           var fastFeature = countryFeature(loc);

 
 

-             if (Object.keys(outerMember.tags).filter(osmIsInterestingTag).length === 0) {
-               return false;
+           if (fastFeature) {
+             if (!withProp || fastFeature.properties[withProp]) {
+               return fastFeature;

              }
            }
          }
 
              }
            }
          }
 

-         return outerMember;
-       } // For fixing up rendering of multipolygons with tags on the outer member.
-       // https://github.com/openstreetmap/iD/issues/613
+         var features2 = featuresContaining(loc);

 
 

-       function osmIsOldMultipolygonOuterMember(entity, graph) {
-         if (entity.type !== 'way' || Object.keys(entity.tags).filter(osmIsInterestingTag).length === 0) return false;
-         var parents = graph.parentRelations(entity);
-         if (parents.length !== 1) return false;
-         var parent = parents[0];
-         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) return false;
-         var members = parent.members,
-             member;
+         for (var i in features2) {
+           var feature2 = features2[i];
+           var levelIndex = levels.indexOf(feature2.properties.level);

 
 

-         for (var i = 0; i < members.length; i++) {
-           member = members[i];
-           if (member.id === entity.id && member.role && member.role !== 'outer') return false; // Not outer member
+           if (feature2.properties.level === targetLevel || levelIndex > targetLevelIndex && levelIndex <= maxLevelIndex) {
+             if (!withProp || feature2.properties[withProp]) {
+               return feature2;
+             }
+           }
+         }
+
+         return null;
+       }
+
+       function featureForID(id) {
+         var stringID;

 
 

-           if (member.id !== entity.id && (!member.role || member.role === 'outer')) return false; // Not a simple multipolygon
+         if (typeof id === "number") {
+           stringID = id.toString();
+
+           if (stringID.length === 1) {
+             stringID = "00" + stringID;
+           } else if (stringID.length === 2) {
+             stringID = "0" + stringID;
+           }
+         } else {
+           stringID = canonicalID(id);

          }
 
          }
 

-         return parent;
+         return featuresByCode[stringID] || null;

        }
        }

-       function osmOldMultipolygonOuterMember(entity, graph) {
-         if (entity.type !== 'way') return false;
-         var parents = graph.parentRelations(entity);
-         if (parents.length !== 1) return false;
-         var parent = parents[0];
-         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) return false;
-         var members = parent.members,
-             member,
-             outerMember;

 
 

-         for (var i = 0; i < members.length; i++) {
-           member = members[i];
+       function smallestFeaturesForBbox(bbox) {
+         return whichPolygonGetter.bbox(bbox).map(function (props) {
+           return featuresByCode[props.id];
+         });
+       }

 
 

-           if (!member.role || member.role === 'outer') {
-             if (outerMember) return false; // Not a simple multipolygon
+       function smallestOrMatchingFeature(query) {
+         if (_typeof(query) === "object") {
+           return smallestFeature(query);
+         }

 
 

-             outerMember = member;
+         return featureForID(query);
+       }
+
+       function feature$1(query) {
+         var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultOpts;
+
+         if (_typeof(query) === "object") {
+           return featureForLoc(query, opts);
+         }
+
+         return featureForID(query);
+       }
+
+       function iso1A2Code(query) {
+         var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultOpts;
+         opts.withProp = "iso1A2";
+         var match = feature$1(query, opts);
+         if (!match) return null;
+         return match.properties.iso1A2 || null;
+       }
+
+       function featuresContaining(query, strict) {
+         var matchingFeatures;
+
+         if (Array.isArray(query) && query.length === 4) {
+           matchingFeatures = smallestFeaturesForBbox(query);
+         } else {
+           var smallestOrMatching = smallestOrMatchingFeature(query);
+           matchingFeatures = smallestOrMatching ? [smallestOrMatching] : [];
+         }
+
+         if (!matchingFeatures.length) return [];
+         var returnFeatures;
+
+         if (!strict || _typeof(query) === "object") {
+           returnFeatures = matchingFeatures.slice();
+         } else {
+           returnFeatures = [];
+         }
+
+         for (var j in matchingFeatures) {
+           var properties = matchingFeatures[j].properties;
+
+           for (var i in properties.groups) {
+             var groupID = properties.groups[i];
+             var groupFeature = featuresByCode[groupID];
+
+             if (returnFeatures.indexOf(groupFeature) === -1) {
+               returnFeatures.push(groupFeature);
+             }

            }
          }
 
            }
          }
 

-         if (!outerMember) return false;
-         var outerEntity = graph.hasEntity(outerMember.id);
-         if (!outerEntity || !Object.keys(outerEntity.tags).filter(osmIsInterestingTag).length) return false;
-         return outerEntity;
-       } // Join `toJoin` array into sequences of connecting ways.
-       // Segments which share identical start/end nodes will, as much as possible,
-       // be connected with each other.
-       //
-       // The return value is a nested array. Each constituent array contains elements
-       // of `toJoin` which have been determined to connect.
-       //
-       // Each consitituent array also has a `nodes` property whose value is an
-       // ordered array of member nodes, with appropriate order reversal and
-       // start/end coordinate de-duplication.
-       //
-       // Members of `toJoin` must have, at minimum, `type` and `id` properties.
-       // Thus either an array of `osmWay`s or a relation member array may be used.
-       //
-       // If an member is an `osmWay`, its tags and childnodes may be reversed via
-       // `actionReverse` in the output.
-       //
-       // The returned sequences array also has an `actions` array property, containing
-       // any reversal actions that should be applied to the graph, should the calling
-       // code attempt to actually join the given ways.
-       //
-       // Incomplete members (those for which `graph.hasEntity(element.id)` returns
-       // false) and non-way members are ignored.
-       //
+         return returnFeatures;
+       }

 
 

-       function osmJoinWays(toJoin, graph) {
-         function resolve(member) {
-           return graph.childNodes(graph.entity(member.id));
+       function featuresIn(id, strict) {
+         var feature2 = featureForID(id);
+         if (!feature2) return [];
+         var features2 = [];
+
+         if (!strict) {
+           features2.push(feature2);

          }
 
          }
 

-         function reverse(item) {
-           var action = actionReverse(item.id, {
-             reverseOneway: true
-           });
-           sequences.actions.push(action);
-           return item instanceof osmWay ? action(graph).entity(item.id) : item;
-         } // make a copy containing only the items to join
+         var properties = feature2.properties;

 
 

+         if (properties.members) {
+           for (var i in properties.members) {
+             var memberID = properties.members[i];
+             features2.push(featuresByCode[memberID]);
+           }
+         }

 
 

-         toJoin = toJoin.filter(function (member) {
-           return member.type === 'way' && graph.hasEntity(member.id);
-         }); // Are the things we are joining relation members or `osmWays`?
-         // If `osmWays`, skip the "prefer a forward path" code below (see #4872)
+         return features2;
+       }

 
 

-         var i;
-         var joinAsMembers = true;
+       function aggregateFeature(id) {
+         var features2 = featuresIn(id, false);
+         if (features2.length === 0) return null;
+         var aggregateCoordinates = [];

 
 

-         for (i = 0; i < toJoin.length; i++) {
-           if (toJoin[i] instanceof osmWay) {
-             joinAsMembers = false;
-             break;
+         for (var i in features2) {
+           var feature2 = features2[i];
+
+           if (feature2.geometry && feature2.geometry.type === "MultiPolygon" && feature2.geometry.coordinates) {
+             aggregateCoordinates = aggregateCoordinates.concat(feature2.geometry.coordinates);

            }
          }
 
            }
          }
 

-         var sequences = [];
-         sequences.actions = [];
+         return {
+           type: "Feature",
+           properties: features2[0].properties,
+           geometry: {
+             type: "MultiPolygon",
+             coordinates: aggregateCoordinates
+           }
+         };
+       }

 
 

-         while (toJoin.length) {
-           // start a new sequence
-           var item = toJoin.shift();
-           var currWays = [item];
-           var currNodes = resolve(item).slice(); // add to it
+       function roadSpeedUnit(query) {
+         var feature2 = smallestOrMatchingFeature(query);
+         return feature2 && feature2.properties.roadSpeedUnit || null;
+       }

 
 

-           while (toJoin.length) {
-             var start = currNodes[0];
-             var end = currNodes[currNodes.length - 1];
-             var fn = null;
-             var nodes = null; // Find the next way/member to join.
+       function roadHeightUnit(query) {
+         var feature2 = smallestOrMatchingFeature(query);
+         return feature2 && feature2.properties.roadHeightUnit || null;
+       }

 
 

-             for (i = 0; i < toJoin.length; i++) {
-               item = toJoin[i];
-               nodes = resolve(item); // (for member ordering only, not way ordering - see #4872)
-               // Strongly prefer to generate a forward path that preserves the order
-               // of the members array. For multipolygons and most relations, member
-               // order does not matter - but for routes, it does. (see #4589)
-               // If we started this sequence backwards (i.e. next member way attaches to
-               // the start node and not the end node), reverse the initial way before continuing.
+       var geojsonArea = {};

 
 

-               if (joinAsMembers && currWays.length === 1 && nodes[0] !== end && nodes[nodes.length - 1] !== end && (nodes[nodes.length - 1] === start || nodes[0] === start)) {
-                 currWays[0] = reverse(currWays[0]);
-                 currNodes.reverse();
-                 start = currNodes[0];
-                 end = currNodes[currNodes.length - 1];
-               }
+       var wgs84$1 = {};

 
 

-               if (nodes[0] === end) {
-                 fn = currNodes.push; // join to end
+       wgs84$1.RADIUS = 6378137;
+       wgs84$1.FLATTENING = 1 / 298.257223563;
+       wgs84$1.POLAR_RADIUS = 6356752.3142;

 
 

-                 nodes = nodes.slice(1);
-                 break;
-               } else if (nodes[nodes.length - 1] === end) {
-                 fn = currNodes.push; // join to end
+       var wgs84 = wgs84$1;
+       geojsonArea.geometry = geometry;
+       geojsonArea.ring = ringArea;

 
 

-                 nodes = nodes.slice(0, -1).reverse();
-                 item = reverse(item);
-                 break;
-               } else if (nodes[nodes.length - 1] === start) {
-                 fn = currNodes.unshift; // join to beginning
+       function geometry(_) {
+         var area = 0,
+             i;

 
 

-                 nodes = nodes.slice(0, -1);
-                 break;
-               } else if (nodes[0] === start) {
-                 fn = currNodes.unshift; // join to beginning
+         switch (_.type) {
+           case 'Polygon':
+             return polygonArea(_.coordinates);

 
 

-                 nodes = nodes.slice(1).reverse();
-                 item = reverse(item);
-                 break;
-               } else {
-                 fn = nodes = null;
-               }
+           case 'MultiPolygon':
+             for (i = 0; i < _.coordinates.length; i++) {
+               area += polygonArea(_.coordinates[i]);

              }
 
              }
 

-             if (!nodes) {
-               // couldn't find a joinable way/member
-               break;
+             return area;
+
+           case 'Point':
+           case 'MultiPoint':
+           case 'LineString':
+           case 'MultiLineString':
+             return 0;
+
+           case 'GeometryCollection':
+             for (i = 0; i < _.geometries.length; i++) {
+               area += geometry(_.geometries[i]);

              }
 
              }
 

-             fn.apply(currWays, [item]);
-             fn.apply(currNodes, nodes);
-             toJoin.splice(i, 1);
-           }
+             return area;
+         }
+       }

 
 

-           currWays.nodes = currNodes;
-           sequences.push(currWays);
+       function polygonArea(coords) {
+         var area = 0;
+
+         if (coords && coords.length > 0) {
+           area += Math.abs(ringArea(coords[0]));
+
+           for (var i = 1; i < coords.length; i++) {
+             area -= Math.abs(ringArea(coords[i]));
+           }

          }
 
          }
 

-         return sequences;
+         return area;

        }
        }

+       /**
+        * Calculate the approximate area of the polygon were it projected onto
+        *     the earth.  Note that this area will be positive if ring is oriented
+        *     clockwise, otherwise it will be negative.
+        *
+        * Reference:
+        * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
+        *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
+        *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
+        *
+        * Returns:
+        * {float} The approximate signed geodesic area of the polygon in square
+        *     meters.
+        */

 
 

-       function actionAddMember(relationId, member, memberIndex, insertPair) {
-         return function action(graph) {
-           var relation = graph.entity(relationId); // There are some special rules for Public Transport v2 routes.

 
 

-           var isPTv2 = /stop|platform/.test(member.role);
+       function ringArea(coords) {
+         var p1,
+             p2,
+             p3,
+             lowerIndex,
+             middleIndex,
+             upperIndex,
+             i,
+             area = 0,
+             coordsLength = coords.length;

 
 

-           if ((isNaN(memberIndex) || insertPair) && member.type === 'way' && !isPTv2) {
-             // Try to perform sensible inserts based on how the ways join together
-             graph = addWayMember(relation, graph);
-           } else {
-             // see https://wiki.openstreetmap.org/wiki/Public_transport#Service_routes
-             // Stops and Platforms for PTv2 should be ordered first.
-             // hack: We do not currently have the ability to place them in the exactly correct order.
-             if (isPTv2 && isNaN(memberIndex)) {
-               memberIndex = 0;
+         if (coordsLength > 2) {
+           for (i = 0; i < coordsLength; i++) {
+             if (i === coordsLength - 2) {
+               // i = N-2
+               lowerIndex = coordsLength - 2;
+               middleIndex = coordsLength - 1;
+               upperIndex = 0;
+             } else if (i === coordsLength - 1) {
+               // i = N-1
+               lowerIndex = coordsLength - 1;
+               middleIndex = 0;
+               upperIndex = 1;
+             } else {
+               // i = 0 to N-3
+               lowerIndex = i;
+               middleIndex = i + 1;
+               upperIndex = i + 2;

              }
 
              }
 

-             graph = graph.replace(relation.addMember(member, memberIndex));
+             p1 = coords[lowerIndex];
+             p2 = coords[middleIndex];
+             p3 = coords[upperIndex];
+             area += (rad(p3[0]) - rad(p1[0])) * Math.sin(rad(p2[1]));

            }
 
            }
 

-           return graph;
-         }; // Add a way member into the relation "wherever it makes sense".
-         // In this situation we were not supplied a memberIndex.
+           area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
+         }
+
+         return area;
+       }
+
+       function rad(_) {
+         return _ * Math.PI / 180;
+       }
+
+       var inputValidation = {};
+
+       var $$g = _export;
+       var $includes = arrayIncludes.includes;
+       var addToUnscopables$1 = addToUnscopables$5;

 
 

-         function addWayMember(relation, graph) {
-           var groups, tempWay, item, i, j, k; // remove PTv2 stops and platforms before doing anything.
+       // `Array.prototype.includes` method
+       // https://tc39.es/ecma262/#sec-array.prototype.includes
+       $$g({ target: 'Array', proto: true }, {
+         includes: function includes(el /* , fromIndex = 0 */) {
+           return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);
+         }
+       });

 
 

-           var PTv2members = [];
-           var members = [];
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables$1('includes');

 
 

-           for (i = 0; i < relation.members.length; i++) {
-             var m = relation.members[i];
+       var validateCenter$1 = {};

 
 

-             if (/stop|platform/.test(m.role)) {
-               PTv2members.push(m);
-             } else {
-               members.push(m);
-             }
-           }
+       validateCenter$1.validateCenter = function validateCenter(center) {
+         var validCenterLengths = [2, 3];

 
 

-           relation = relation.update({
-             members: members
-           });
+         if (!Array.isArray(center) || !validCenterLengths.includes(center.length)) {
+           throw new Error("ERROR! Center has to be an array of length two or three");
+         }

 
 

-           if (insertPair) {
-             // We're adding a member that must stay paired with an existing member.
-             // (This feature is used by `actionSplit`)
-             //
-             // This is tricky because the members may exist multiple times in the
-             // member list, and with different A-B/B-A ordering and different roles.
-             // (e.g. a bus route that loops out and back - #4589).
-             //
-             // Replace the existing member with a temporary way,
-             // so that `osmJoinWays` can treat the pair like a single way.
-             tempWay = osmWay({
-               id: 'wTemp',
-               nodes: insertPair.nodes
-             });
-             graph = graph.replace(tempWay);
-             var tempMember = {
-               id: tempWay.id,
-               type: 'way',
-               role: member.role
-             };
-             var tempRelation = relation.replaceMember({
-               id: insertPair.originalID
-             }, tempMember, true);
-             groups = utilArrayGroupBy(tempRelation.members, 'type');
-             groups.way = groups.way || [];
-           } else {
-             // Add the member anywhere, one time. Just push and let `osmJoinWays` decide where to put it.
-             groups = utilArrayGroupBy(relation.members, 'type');
-             groups.way = groups.way || [];
-             groups.way.push(member);
-           }
+         var _center = _slicedToArray(center, 2),
+             lng = _center[0],
+             lat = _center[1];

 
 

-           members = withIndex(groups.way);
-           var joined = osmJoinWays(members, graph); // `joined` might not contain all of the way members,
-           // But will contain only the completed (downloaded) members
+         if (typeof lng !== "number" || typeof lat !== "number") {
+           throw new Error("ERROR! Longitude and Latitude has to be numbers but where ".concat(_typeof(lng), " and ").concat(_typeof(lat)));
+         }

 
 

-           for (i = 0; i < joined.length; i++) {
-             var segment = joined[i];
-             var nodes = segment.nodes.slice();
-             var startIndex = segment[0].index; // j = array index in `members` where this segment starts
+         if (lng > 180 || lng < -180) {
+           throw new Error("ERROR! Longitude has to be between -180 and 180 but was ".concat(lng));
+         }

 
 

-             for (j = 0; j < members.length; j++) {
-               if (members[j].index === startIndex) {
-                 break;
-               }
-             } // k = each member in segment
+         if (lat > 90 || lat < -90) {
+           throw new Error("ERROR! Latitude has to be between -90 and 90 but was ".concat(lat));
+         }
+       };

 
 

+       var validateRadius$1 = {};

 
 

-             for (k = 0; k < segment.length; k++) {
-               item = segment[k];
-               var way = graph.entity(item.id); // If this is a paired item, generate members in correct order and role
+       validateRadius$1.validateRadius = function validateRadius(radius) {
+         if (typeof radius !== "number") {
+           throw new Error("ERROR! Radius has to be a positive number but was: ".concat(_typeof(radius)));
+         }

 
 

-               if (tempWay && item.id === tempWay.id) {
-                 if (nodes[0].id === insertPair.nodes[0]) {
-                   item.pair = [{
-                     id: insertPair.originalID,
-                     type: 'way',
-                     role: item.role
-                   }, {
-                     id: insertPair.insertedID,
-                     type: 'way',
-                     role: item.role
-                   }];
-                 } else {
-                   item.pair = [{
-                     id: insertPair.insertedID,
-                     type: 'way',
-                     role: item.role
-                   }, {
-                     id: insertPair.originalID,
-                     type: 'way',
-                     role: item.role
-                   }];
-                 }
-               } // reorder `members` if necessary
+         if (radius <= 0) {
+           throw new Error("ERROR! Radius has to be a positive number but was: ".concat(radius));
+         }
+       };

 
 

+       var validateNumberOfEdges$1 = {};

 
 

-               if (k > 0) {
-                 if (j + k >= members.length || item.index !== members[j + k].index) {
-                   moveMember(members, item.index, j + k);
-                 }
-               }
+       validateNumberOfEdges$1.validateNumberOfEdges = function validateNumberOfEdges(numberOfEdges) {
+         if (typeof numberOfEdges !== "number") {
+           var ARGUMENT_TYPE = Array.isArray(numberOfEdges) ? "array" : _typeof(numberOfEdges);
+           throw new Error("ERROR! Number of edges has to be a number but was: ".concat(ARGUMENT_TYPE));
+         }

 
 

-               nodes.splice(0, way.nodes.length - 1);
-             }
-           }
+         if (numberOfEdges < 3) {
+           throw new Error("ERROR! Number of edges has to be at least 3 but was: ".concat(numberOfEdges));
+         }
+       };

 
 

-           if (tempWay) {
-             graph = graph.remove(tempWay);
-           } // Final pass: skip dead items, split pairs, remove index properties
+       var validateEarthRadius$1 = {};

 
 

+       validateEarthRadius$1.validateEarthRadius = function validateEarthRadius(earthRadius) {
+         if (typeof earthRadius !== "number") {
+           var ARGUMENT_TYPE = Array.isArray(earthRadius) ? "array" : _typeof(earthRadius);
+           throw new Error("ERROR! Earth radius has to be a number but was: ".concat(ARGUMENT_TYPE));
+         }

 
 

-           var wayMembers = [];
+         if (earthRadius <= 0) {
+           throw new Error("ERROR! Earth radius has to be a positive number but was: ".concat(earthRadius));
+         }
+       };

 
 

-           for (i = 0; i < members.length; i++) {
-             item = members[i];
-             if (item.index === -1) continue;
+       var validateBearing$1 = {};

 
 

-             if (item.pair) {
-               wayMembers.push(item.pair[0]);
-               wayMembers.push(item.pair[1]);
-             } else {
-               wayMembers.push(utilObjectOmit(item, ['index']));
-             }
-           } // Put stops and platforms first, then nodes, ways, relations
-           // This is recommended for Public Transport v2 routes:
-           // see https://wiki.openstreetmap.org/wiki/Public_transport#Service_routes
+       validateBearing$1.validateBearing = function validateBearing(bearing) {
+         if (typeof bearing !== "number") {
+           var ARGUMENT_TYPE = Array.isArray(bearing) ? "array" : _typeof(bearing);
+           throw new Error("ERROR! Bearing has to be a number but was: ".concat(ARGUMENT_TYPE));
+         }
+       };

 
 

+       var validateCenter = validateCenter$1.validateCenter;
+       var validateRadius = validateRadius$1.validateRadius;
+       var validateNumberOfEdges = validateNumberOfEdges$1.validateNumberOfEdges;
+       var validateEarthRadius = validateEarthRadius$1.validateEarthRadius;
+       var validateBearing = validateBearing$1.validateBearing;

 
 

-           var newMembers = PTv2members.concat(groups.node || [], wayMembers, groups.relation || []);
-           return graph.replace(relation.update({
-             members: newMembers
-           })); // `moveMember()` changes the `members` array in place by splicing
-           // the item with `.index = findIndex` to where it belongs,
-           // and marking the old position as "dead" with `.index = -1`
-           //
-           // j=5, k=0                jk
-           // segment                 5 4 7 6
-           // members       0 1 2 3 4 5 6 7 8 9        keep 5 in j+k
-           //
-           // j=5, k=1                j k
-           // segment                 5 4 7 6
-           // members       0 1 2 3 4 5 6 7 8 9        move 4 to j+k
-           // members       0 1 2 3 x 5 4 6 7 8 9      moved
-           //
-           // j=5, k=2                j   k
-           // segment                 5 4 7 6
-           // members       0 1 2 3 x 5 4 6 7 8 9      move 7 to j+k
-           // members       0 1 2 3 x 5 4 7 6 x 8 9    moved
-           //
-           // j=5, k=3                j     k
-           // segment                 5 4 7 6
-           // members       0 1 2 3 x 5 4 7 6 x 8 9    keep 6 in j+k
-           //
+       function validateInput$1(_ref) {
+         var center = _ref.center,
+             radius = _ref.radius,
+             numberOfEdges = _ref.numberOfEdges,
+             earthRadius = _ref.earthRadius,
+             bearing = _ref.bearing;
+         validateCenter(center);
+         validateRadius(radius);
+         validateNumberOfEdges(numberOfEdges);
+         validateEarthRadius(earthRadius);
+         validateBearing(bearing);
+       }

 
 

-           function moveMember(arr, findIndex, toIndex) {
-             var i;
+       inputValidation.validateCenter = validateCenter;
+       inputValidation.validateRadius = validateRadius;
+       inputValidation.validateNumberOfEdges = validateNumberOfEdges;
+       inputValidation.validateEarthRadius = validateEarthRadius;
+       inputValidation.validateBearing = validateBearing;
+       inputValidation.validateInput = validateInput$1;

 
 

-             for (i = 0; i < arr.length; i++) {
-               if (arr[i].index === findIndex) {
-                 break;
-               }
-             }
+       var validateInput = inputValidation.validateInput;
+       var defaultEarthRadius = 6378137; // equatorial Earth radius

 
 

-             var item = Object.assign({}, arr[i]); // shallow copy
+       function toRadians(angleInDegrees) {
+         return angleInDegrees * Math.PI / 180;
+       }

 
 

-             arr[i].index = -1; // mark as dead
+       function toDegrees(angleInRadians) {
+         return angleInRadians * 180 / Math.PI;
+       }

 
 

-             item.index = toIndex;
-             arr.splice(toIndex, 0, item);
-           } // This is the same as `Relation.indexedMembers`,
-           // Except we don't want to index all the members, only the ways
+       function offset(c1, distance, earthRadius, bearing) {
+         var lat1 = toRadians(c1[1]);
+         var lon1 = toRadians(c1[0]);
+         var dByR = distance / earthRadius;
+         var lat = Math.asin(Math.sin(lat1) * Math.cos(dByR) + Math.cos(lat1) * Math.sin(dByR) * Math.cos(bearing));
+         var lon = lon1 + Math.atan2(Math.sin(bearing) * Math.sin(dByR) * Math.cos(lat1), Math.cos(dByR) - Math.sin(lat1) * Math.sin(lat));
+         return [toDegrees(lon), toDegrees(lat)];
+       }

 
 

+       var circleToPolygon = function circleToPolygon(center, radius, options) {
+         var n = getNumberOfEdges(options);
+         var earthRadius = getEarthRadius(options);
+         var bearing = getBearing(options);
+         var direction = getDirection(options); // validateInput() throws error on invalid input and do nothing on valid input

 
 

-           function withIndex(arr) {
-             var result = new Array(arr.length);
+         validateInput({
+           center: center,
+           radius: radius,
+           numberOfEdges: n,
+           earthRadius: earthRadius,
+           bearing: bearing
+         });
+         var start = toRadians(bearing);
+         var coordinates = [];

 
 

-             for (var i = 0; i < arr.length; i++) {
-               result[i] = Object.assign({}, arr[i]); // shallow copy
+         for (var i = 0; i < n; ++i) {
+           coordinates.push(offset(center, radius, earthRadius, start + direction * 2 * Math.PI * -i / n));
+         }

 
 

-               result[i].index = i;
-             }
+         coordinates.push(coordinates[0]);
+         return {
+           type: "Polygon",
+           coordinates: [coordinates]
+         };
+       };

 
 

-             return result;
-           }
+       function getNumberOfEdges(options) {
+         if (isUndefinedOrNull(options)) {
+           return 32;
+         } else if (isObjectNotArray(options)) {
+           var numberOfEdges = options.numberOfEdges;
+           return numberOfEdges === undefined ? 32 : numberOfEdges;

          }
          }

+
+         return options;

        }
 
        }
 

-       function actionAddMidpoint(midpoint, node) {
-         return function (graph) {
-           graph = graph.replace(node.move(midpoint.loc));
-           var parents = utilArrayIntersection(graph.parentWays(graph.entity(midpoint.edge[0])), graph.parentWays(graph.entity(midpoint.edge[1])));
-           parents.forEach(function (way) {
-             for (var i = 0; i < way.nodes.length - 1; i++) {
-               if (geoEdgeEqual([way.nodes[i], way.nodes[i + 1]], midpoint.edge)) {
-                 graph = graph.replace(graph.entity(way.id).addNode(node.id, i + 1)); // Add only one midpoint on doubled-back segments,
-                 // turning them into self-intersections.
+       function getEarthRadius(options) {
+         if (isUndefinedOrNull(options)) {
+           return defaultEarthRadius;
+         } else if (isObjectNotArray(options)) {
+           var earthRadius = options.earthRadius;
+           return earthRadius === undefined ? defaultEarthRadius : earthRadius;
+         }

 
 

-                 return;
-               }
-             }
-           });
-           return graph;
-         };
+         return defaultEarthRadius;

        }
 
        }
 

-       // https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/AddNodeToWayAction.as
-       function actionAddVertex(wayId, nodeId, index) {
-         return function (graph) {
-           return graph.replace(graph.entity(wayId).addNode(nodeId, index));
-         };
-       }
+       function getDirection(options) {
+         if (isObjectNotArray(options) && options.rightHandRule) {
+           return -1;
+         }

 
 

-       function actionChangeMember(relationId, member, memberIndex) {
-         return function (graph) {
-           return graph.replace(graph.entity(relationId).updateMember(member, memberIndex));
-         };
+         return 1;

        }
 
        }
 

-       function actionChangePreset(entityID, oldPreset, newPreset, skipFieldDefaults) {
-         return function action(graph) {
-           var entity = graph.entity(entityID);
-           var geometry = entity.geometry(graph);
-           var tags = entity.tags;
-           if (oldPreset) tags = oldPreset.unsetTags(tags, geometry);
-           if (newPreset) tags = newPreset.setTags(tags, geometry, skipFieldDefaults);
-           return graph.replace(entity.update({
-             tags: tags
-           }));
-         };
+       function getBearing(options) {
+         if (isUndefinedOrNull(options)) {
+           return 0;
+         } else if (isObjectNotArray(options)) {
+           var bearing = options.bearing;
+           return bearing === undefined ? 0 : bearing;
+         }
+
+         return 0;

        }
 
        }
 

-       function actionChangeTags(entityId, tags) {
-         return function (graph) {
-           var entity = graph.entity(entityId);
-           return graph.replace(entity.update({
-             tags: tags
-           }));
-         };
+       function isObjectNotArray(argument) {
+         return argument !== null && _typeof(argument) === "object" && !Array.isArray(argument);

        }
 
        }
 

-       function osmNode() {
-         if (!(this instanceof osmNode)) {
-           return new osmNode().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
+       function isUndefinedOrNull(argument) {
+         return argument === null || argument === undefined;

        }
        }

-       osmEntity.node = osmNode;
-       osmNode.prototype = Object.create(osmEntity.prototype);
-       Object.assign(osmNode.prototype, {
-         type: 'node',
-         loc: [9999, 9999],
-         extent: function extent() {
-           return new geoExtent(this.loc);
-         },
-         geometry: function geometry(graph) {
-           return graph["transient"](this, 'geometry', function () {
-             return graph.isPoi(this) ? 'point' : 'vertex';
-           });
-         },
-         move: function move(loc) {
-           return this.update({
-             loc: loc
-           });
-         },
-         isDegenerate: function isDegenerate() {
-           return !(Array.isArray(this.loc) && this.loc.length === 2 && this.loc[0] >= -180 && this.loc[0] <= 180 && this.loc[1] >= -90 && this.loc[1] <= 90);
-         },
-         // Inspect tags and geometry to determine which direction(s) this node/vertex points
-         directions: function directions(resolver, projection) {
-           var val;
-           var i; // which tag to use?

 
 

-           if (this.isHighwayIntersection(resolver) && (this.tags.stop || '').toLowerCase() === 'all') {
-             // all-way stop tag on a highway intersection
-             val = 'all';
-           } else {
-             // generic direction tag
-             val = (this.tags.direction || '').toLowerCase(); // better suffix-style direction tag
+       var $$f = _export;

 
 

-             var re = /:direction$/i;
-             var keys = Object.keys(this.tags);
+       // `Number.EPSILON` constant
+       // https://tc39.es/ecma262/#sec-number.epsilon
+       $$f({ target: 'Number', stat: true }, {
+         EPSILON: Math.pow(2, -52)
+       });

 
 

-             for (i = 0; i < keys.length; i++) {
-               if (re.test(keys[i])) {
-                 val = this.tags[keys[i]].toLowerCase();
-                 break;
-               }
-             }
-           }
+       var requireObjectCoercible$4 = requireObjectCoercible$e;

 
 

-           if (val === '') return [];
-           var cardinal = {
-             north: 0,
-             n: 0,
-             northnortheast: 22,
-             nne: 22,
-             northeast: 45,
-             ne: 45,
-             eastnortheast: 67,
-             ene: 67,
-             east: 90,
-             e: 90,
-             eastsoutheast: 112,
-             ese: 112,
-             southeast: 135,
-             se: 135,
-             southsoutheast: 157,
-             sse: 157,
-             south: 180,
-             s: 180,
-             southsouthwest: 202,
-             ssw: 202,
-             southwest: 225,
-             sw: 225,
-             westsouthwest: 247,
-             wsw: 247,
-             west: 270,
-             w: 270,
-             westnorthwest: 292,
-             wnw: 292,
-             northwest: 315,
-             nw: 315,
-             northnorthwest: 337,
-             nnw: 337
-           };
-           var values = val.split(';');
-           var results = [];
-           values.forEach(function (v) {
-             // swap cardinal for numeric directions
-             if (cardinal[v] !== undefined) {
-               v = cardinal[v];
-             } // numeric direction - just add to results
+       var quot = /"/g;

 
 

+       // `CreateHTML` abstract operation
+       // https://tc39.es/ecma262/#sec-createhtml
+       var createHtml = function (string, tag, attribute, value) {
+         var S = String(requireObjectCoercible$4(string));
+         var p1 = '<' + tag;
+         if (attribute !== '') p1 += ' ' + attribute + '="' + String(value).replace(quot, '&quot;') + '"';
+         return p1 + '>' + S + '</' + tag + '>';
+       };

 
 

-             if (v !== '' && !isNaN(+v)) {
-               results.push(+v);
-               return;
-             } // string direction - inspect parent ways
+       var fails$6 = fails$N;

 
 

+       // check the existence of a method, lowercase
+       // of a tag and escaping quotes in arguments
+       var stringHtmlForced = function (METHOD_NAME) {
+         return fails$6(function () {
+           var test = ''[METHOD_NAME]('"');
+           return test !== test.toLowerCase() || test.split('"').length > 3;
+         });
+       };

 
 

-             var lookBackward = this.tags['traffic_sign:backward'] || v === 'backward' || v === 'both' || v === 'all';
-             var lookForward = this.tags['traffic_sign:forward'] || v === 'forward' || v === 'both' || v === 'all';
-             if (!lookForward && !lookBackward) return;
-             var nodeIds = {};
-             resolver.parentWays(this).forEach(function (parent) {
-               var nodes = parent.nodes;
+       var $$e = _export;
+       var createHTML = createHtml;
+       var forcedStringHTMLMethod = stringHtmlForced;

 
 

-               for (i = 0; i < nodes.length; i++) {
-                 if (nodes[i] === this.id) {
-                   // match current entity
-                   if (lookForward && i > 0) {
-                     nodeIds[nodes[i - 1]] = true; // look back to prev node
-                   }
+       // `String.prototype.link` method
+       // https://tc39.es/ecma262/#sec-string.prototype.link
+       $$e({ target: 'String', proto: true, forced: forcedStringHTMLMethod('link') }, {
+         link: function link(url) {
+           return createHTML(this, 'a', 'href', url);
+         }
+       });

 
 

-                   if (lookBackward && i < nodes.length - 1) {
-                     nodeIds[nodes[i + 1]] = true; // look ahead to next node
-                   }
-                 }
-               }
-             }, this);
-             Object.keys(nodeIds).forEach(function (nodeId) {
-               // +90 because geoAngle returns angle from X axis, not Y (north)
-               results.push(geoAngle(this, resolver.entity(nodeId), projection) * (180 / Math.PI) + 90);
-             }, this);
-           }, this);
-           return utilArrayUniq(results);
-         },
-         isEndpoint: function isEndpoint(resolver) {
-           return resolver["transient"](this, 'isEndpoint', function () {
-             var id = this.id;
-             return resolver.parentWays(this).filter(function (parent) {
-               return !parent.isClosed() && !!parent.affix(id);
-             }).length > 0;
-           });
-         },
-         isConnected: function isConnected(resolver) {
-           return resolver["transient"](this, 'isConnected', function () {
-             var parents = resolver.parentWays(this);
+       /**
+        * splaytree v3.1.0
+        * Fast Splay tree for Node and browser
+        *
+        * @author Alexander Milevski <info@w8r.name>
+        * @license MIT
+        * @preserve
+        */
+       var Node =
+       /** @class */
+       function () {
+         function Node(key, data) {
+           this.next = null;
+           this.key = key;
+           this.data = data;
+           this.left = null;
+           this.right = null;
+         }

 
 

-             if (parents.length > 1) {
-               // vertex is connected to multiple parent ways
-               for (var i in parents) {
-                 if (parents[i].geometry(resolver) === 'line' && parents[i].hasInterestingTags()) return true;
-               }
-             } else if (parents.length === 1) {
-               var way = parents[0];
-               var nodes = way.nodes.slice();
+         return Node;
+       }();
+       /* follows "An implementation of top-down splaying"
+        * by D. Sleator <sleator@cs.cmu.edu> March 1992
+        */

 
 

-               if (way.isClosed()) {
-                 nodes.pop();
-               } // ignore connecting node if closed
-               // return true if vertex appears multiple times (way is self intersecting)

 
 

+       function DEFAULT_COMPARE(a, b) {
+         return a > b ? 1 : a < b ? -1 : 0;
+       }
+       /**
+        * Simple top down splay, not requiring i to be in the tree t.
+        */

 
 

-               return nodes.indexOf(this.id) !== nodes.lastIndexOf(this.id);
-             }

 
 

-             return false;
-           });
-         },
-         parentIntersectionWays: function parentIntersectionWays(resolver) {
-           return resolver["transient"](this, 'parentIntersectionWays', function () {
-             return resolver.parentWays(this).filter(function (parent) {
-               return (parent.tags.highway || parent.tags.waterway || parent.tags.railway || parent.tags.aeroway) && parent.geometry(resolver) === 'line';
-             });
-           });
-         },
-         isIntersection: function isIntersection(resolver) {
-           return this.parentIntersectionWays(resolver).length > 1;
-         },
-         isHighwayIntersection: function isHighwayIntersection(resolver) {
-           return resolver["transient"](this, 'isHighwayIntersection', function () {
-             return resolver.parentWays(this).filter(function (parent) {
-               return parent.tags.highway && parent.geometry(resolver) === 'line';
-             }).length > 1;
-           });
-         },
-         isOnAddressLine: function isOnAddressLine(resolver) {
-           return resolver["transient"](this, 'isOnAddressLine', function () {
-             return resolver.parentWays(this).filter(function (parent) {
-               return parent.tags.hasOwnProperty('addr:interpolation') && parent.geometry(resolver) === 'line';
-             }).length > 0;
-           });
-         },
-         asJXON: function asJXON(changeset_id) {
-           var r = {
-             node: {
-               '@id': this.osmId(),
-               '@lon': this.loc[0],
-               '@lat': this.loc[1],
-               '@version': this.version || 0,
-               tag: Object.keys(this.tags).map(function (k) {
-                 return {
-                   keyAttributes: {
-                     k: k,
-                     v: this.tags[k]
-                   }
-                 };
-               }, this)
-             }
-           };
-           if (changeset_id) r.node['@changeset'] = changeset_id;
-           return r;
-         },
-         asGeoJSON: function asGeoJSON() {
-           return {
-             type: 'Point',
-             coordinates: this.loc
-           };
-         }
-       });
+       function splay(i, t, comparator) {
+         var N = new Node(null, null);
+         var l = N;
+         var r = N;

 
 

-       function actionCircularize(wayId, projection, maxAngle) {
-         maxAngle = (maxAngle || 20) * Math.PI / 180;
+         while (true) {
+           var cmp = comparator(i, t.key); //if (i < t.key) {

 
 

-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var way = graph.entity(wayId);
-           var origNodes = {};
-           graph.childNodes(way).forEach(function (node) {
-             if (!origNodes[node.id]) origNodes[node.id] = node;
-           });
+           if (cmp < 0) {
+             if (t.left === null) break; //if (i < t.left.key) {

 
 

-           if (!way.isConvex(graph)) {
-             graph = action.makeConvex(graph);
-           }
+             if (comparator(i, t.left.key) < 0) {
+               var y = t.left;
+               /* rotate right */

 
 

-           var nodes = utilArrayUniq(graph.childNodes(way));
-           var keyNodes = nodes.filter(function (n) {
-             return graph.parentWays(n).length !== 1;
-           });
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var keyPoints = keyNodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var centroid = points.length === 2 ? geoVecInterp(points[0], points[1], 0.5) : d3_polygonCentroid(points);
-           var radius = d3_median(points, function (p) {
-             return geoVecLength(centroid, p);
-           });
-           var sign = d3_polygonArea(points) > 0 ? 1 : -1;
-           var ids, i, j, k; // we need at least two key nodes for the algorithm to work
+               t.left = y.right;
+               y.right = t;
+               t = y;
+               if (t.left === null) break;
+             }

 
 

-           if (!keyNodes.length) {
-             keyNodes = [nodes[0]];
-             keyPoints = [points[0]];
-           }
+             r.left = t;
+             /* link right */

 
 

-           if (keyNodes.length === 1) {
-             var index = nodes.indexOf(keyNodes[0]);
-             var oppositeIndex = Math.floor((index + nodes.length / 2) % nodes.length);
-             keyNodes.push(nodes[oppositeIndex]);
-             keyPoints.push(points[oppositeIndex]);
-           } // key points and nodes are those connected to the ways,
-           // they are projected onto the circle, in between nodes are moved
-           // to constant intervals between key nodes, extra in between nodes are
-           // added if necessary.
+             r = t;
+             t = t.left; //} else if (i > t.key) {
+           } else if (cmp > 0) {
+             if (t.right === null) break; //if (i > t.right.key) {

 
 

+             if (comparator(i, t.right.key) > 0) {
+               var y = t.right;
+               /* rotate left */

 
 

-           for (i = 0; i < keyPoints.length; i++) {
-             var nextKeyNodeIndex = (i + 1) % keyNodes.length;
-             var startNode = keyNodes[i];
-             var endNode = keyNodes[nextKeyNodeIndex];
-             var startNodeIndex = nodes.indexOf(startNode);
-             var endNodeIndex = nodes.indexOf(endNode);
-             var numberNewPoints = -1;
-             var indexRange = endNodeIndex - startNodeIndex;
-             var nearNodes = {};
-             var inBetweenNodes = [];
-             var startAngle, endAngle, totalAngle, eachAngle;
-             var angle, loc, node, origNode;
+               t.right = y.left;
+               y.left = t;
+               t = y;
+               if (t.right === null) break;
+             }

 
 

-             if (indexRange < 0) {
-               indexRange += nodes.length;
-             } // position this key node
+             l.right = t;
+             /* link left */

 
 

+             l = t;
+             t = t.right;
+           } else break;
+         }
+         /* assemble */

 
 

-             var distance = geoVecLength(centroid, keyPoints[i]) || 1e-4;
-             keyPoints[i] = [centroid[0] + (keyPoints[i][0] - centroid[0]) / distance * radius, centroid[1] + (keyPoints[i][1] - centroid[1]) / distance * radius];
-             loc = projection.invert(keyPoints[i]);
-             node = keyNodes[i];
-             origNode = origNodes[node.id];
-             node = node.move(geoVecInterp(origNode.loc, loc, t));
-             graph = graph.replace(node); // figure out the between delta angle we want to match to

 
 

-             startAngle = Math.atan2(keyPoints[i][1] - centroid[1], keyPoints[i][0] - centroid[0]);
-             endAngle = Math.atan2(keyPoints[nextKeyNodeIndex][1] - centroid[1], keyPoints[nextKeyNodeIndex][0] - centroid[0]);
-             totalAngle = endAngle - startAngle; // detects looping around -pi/pi
+         l.right = t.left;
+         r.left = t.right;
+         t.left = N.right;
+         t.right = N.left;
+         return t;
+       }

 
 

-             if (totalAngle * sign > 0) {
-               totalAngle = -sign * (2 * Math.PI - Math.abs(totalAngle));
-             }
+       function insert(i, data, t, comparator) {
+         var node = new Node(i, data);

 
 

-             do {
-               numberNewPoints++;
-               eachAngle = totalAngle / (indexRange + numberNewPoints);
-             } while (Math.abs(eachAngle) > maxAngle); // move existing nodes
+         if (t === null) {
+           node.left = node.right = null;
+           return node;
+         }

 
 

+         t = splay(i, t, comparator);
+         var cmp = comparator(i, t.key);

 
 

-             for (j = 1; j < indexRange; j++) {
-               angle = startAngle + j * eachAngle;
-               loc = projection.invert([centroid[0] + Math.cos(angle) * radius, centroid[1] + Math.sin(angle) * radius]);
-               node = nodes[(j + startNodeIndex) % nodes.length];
-               origNode = origNodes[node.id];
-               nearNodes[node.id] = angle;
-               node = node.move(geoVecInterp(origNode.loc, loc, t));
-               graph = graph.replace(node);
-             } // add new in between nodes if necessary
+         if (cmp < 0) {
+           node.left = t.left;
+           node.right = t;
+           t.left = null;
+         } else if (cmp >= 0) {
+           node.right = t.right;
+           node.left = t;
+           t.right = null;
+         }

 
 

+         return node;
+       }

 
 

-             for (j = 0; j < numberNewPoints; j++) {
-               angle = startAngle + (indexRange + j) * eachAngle;
-               loc = projection.invert([centroid[0] + Math.cos(angle) * radius, centroid[1] + Math.sin(angle) * radius]); // choose a nearnode to use as the original
+       function split(key, v, comparator) {
+         var left = null;
+         var right = null;

 
 

-               var min = Infinity;
+         if (v) {
+           v = splay(key, v, comparator);
+           var cmp = comparator(v.key, key);

 
 

-               for (var nodeId in nearNodes) {
-                 var nearAngle = nearNodes[nodeId];
-                 var dist = Math.abs(nearAngle - angle);
+           if (cmp === 0) {
+             left = v.left;
+             right = v.right;
+           } else if (cmp < 0) {
+             right = v.right;
+             v.right = null;
+             left = v;
+           } else {
+             left = v.left;
+             v.left = null;
+             right = v;
+           }
+         }

 
 

-                 if (dist < min) {
-                   min = dist;
-                   origNode = origNodes[nodeId];
-                 }
-               }
+         return {
+           left: left,
+           right: right
+         };
+       }

 
 

-               node = osmNode({
-                 loc: geoVecInterp(origNode.loc, loc, t)
-               });
-               graph = graph.replace(node);
-               nodes.splice(endNodeIndex + j, 0, node);
-               inBetweenNodes.push(node.id);
-             } // Check for other ways that share these keyNodes..
-             // If keyNodes are adjacent in both ways,
-             // we can add inBetweenNodes to that shared way too..
+       function merge$3(left, right, comparator) {
+         if (right === null) return left;
+         if (left === null) return right;
+         right = splay(left.key, right, comparator);
+         right.left = left;
+         return right;
+       }
+       /**
+        * Prints level of the tree
+        */

 
 
 
 

-             if (indexRange === 1 && inBetweenNodes.length) {
-               var startIndex1 = way.nodes.lastIndexOf(startNode.id);
-               var endIndex1 = way.nodes.lastIndexOf(endNode.id);
-               var wayDirection1 = endIndex1 - startIndex1;
+       function printRow(root, prefix, isTail, out, printNode) {
+         if (root) {
+           out("" + prefix + (isTail ? '└── ' : '├── ') + printNode(root) + "\n");
+           var indent = prefix + (isTail ? '    ' : '│   ');
+           if (root.left) printRow(root.left, indent, false, out, printNode);
+           if (root.right) printRow(root.right, indent, true, out, printNode);
+         }
+       }

 
 

-               if (wayDirection1 < -1) {
-                 wayDirection1 = 1;
-               }
+       var Tree =
+       /** @class */
+       function () {
+         function Tree(comparator) {
+           if (comparator === void 0) {
+             comparator = DEFAULT_COMPARE;
+           }

 
 

-               var parentWays = graph.parentWays(keyNodes[i]);
+           this._root = null;
+           this._size = 0;
+           this._comparator = comparator;
+         }
+         /**
+          * Inserts a key, allows duplicates
+          */

 
 

-               for (j = 0; j < parentWays.length; j++) {
-                 var sharedWay = parentWays[j];
-                 if (sharedWay === way) continue;

 
 

-                 if (sharedWay.areAdjacent(startNode.id, endNode.id)) {
-                   var startIndex2 = sharedWay.nodes.lastIndexOf(startNode.id);
-                   var endIndex2 = sharedWay.nodes.lastIndexOf(endNode.id);
-                   var wayDirection2 = endIndex2 - startIndex2;
-                   var insertAt = endIndex2;
+         Tree.prototype.insert = function (key, data) {
+           this._size++;
+           return this._root = insert(key, data, this._root, this._comparator);
+         };
+         /**
+          * Adds a key, if it is not present in the tree
+          */

 
 

-                   if (wayDirection2 < -1) {
-                     wayDirection2 = 1;
-                   }

 
 

-                   if (wayDirection1 !== wayDirection2) {
-                     inBetweenNodes.reverse();
-                     insertAt = startIndex2;
-                   }
+         Tree.prototype.add = function (key, data) {
+           var node = new Node(key, data);

 
 

-                   for (k = 0; k < inBetweenNodes.length; k++) {
-                     sharedWay = sharedWay.addNode(inBetweenNodes[k], insertAt + k);
-                   }
+           if (this._root === null) {
+             node.left = node.right = null;
+             this._size++;
+             this._root = node;
+           }

 
 

-                   graph = graph.replace(sharedWay);
-                 }
-               }
+           var comparator = this._comparator;
+           var t = splay(key, this._root, comparator);
+           var cmp = comparator(key, t.key);
+           if (cmp === 0) this._root = t;else {
+             if (cmp < 0) {
+               node.left = t.left;
+               node.right = t;
+               t.left = null;
+             } else if (cmp > 0) {
+               node.right = t.right;
+               node.left = t;
+               t.right = null;

              }
              }

-           } // update the way to have all the new nodes
+
+             this._size++;
+             this._root = node;
+           }
+           return this._root;
+         };
+         /**
+          * @param  {Key} key
+          * @return {Node|null}
+          */

 
 
 
 

-           ids = nodes.map(function (n) {
-             return n.id;
-           });
-           ids.push(ids[0]);
-           way = way.update({
-             nodes: ids
-           });
-           graph = graph.replace(way);
-           return graph;
+         Tree.prototype.remove = function (key) {
+           this._root = this._remove(key, this._root, this._comparator);

          };
          };

+         /**
+          * Deletes i from the tree if it's there
+          */

 
 

-         action.makeConvex = function (graph) {
-           var way = graph.entity(wayId);
-           var nodes = utilArrayUniq(graph.childNodes(way));
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var sign = d3_polygonArea(points) > 0 ? 1 : -1;
-           var hull = d3_polygonHull(points);
-           var i, j; // D3 convex hulls go counterclockwise..

 
 

-           if (sign === -1) {
-             nodes.reverse();
-             points.reverse();
+         Tree.prototype._remove = function (i, t, comparator) {
+           var x;
+           if (t === null) return null;
+           t = splay(i, t, comparator);
+           var cmp = comparator(i, t.key);
+
+           if (cmp === 0) {
+             /* found it */
+             if (t.left === null) {
+               x = t.right;
+             } else {
+               x = splay(i, t.left, comparator);
+               x.right = t.right;
+             }
+
+             this._size--;
+             return x;

            }
 
            }
 

-           for (i = 0; i < hull.length - 1; i++) {
-             var startIndex = points.indexOf(hull[i]);
-             var endIndex = points.indexOf(hull[i + 1]);
-             var indexRange = endIndex - startIndex;
+           return t;
+           /* It wasn't there */
+         };
+         /**
+          * Removes and returns the node with smallest key
+          */

 
 

-             if (indexRange < 0) {
-               indexRange += nodes.length;
-             } // move interior nodes to the surface of the convex hull..

 
 

+         Tree.prototype.pop = function () {
+           var node = this._root;

 
 

-             for (j = 1; j < indexRange; j++) {
-               var point = geoVecInterp(hull[i], hull[i + 1], j / indexRange);
-               var node = nodes[(j + startIndex) % nodes.length].move(projection.invert(point));
-               graph = graph.replace(node);
+           if (node) {
+             while (node.left) {
+               node = node.left;

              }
              }

+
+             this._root = splay(node.key, this._root, this._comparator);
+             this._root = this._remove(node.key, this._root, this._comparator);
+             return {
+               key: node.key,
+               data: node.data
+             };

            }
 
            }
 

-           return graph;
+           return null;

          };
          };

-
-         action.disabled = function (graph) {
-           if (!graph.entity(wayId).isClosed()) {
-             return 'not_closed';
-           } //disable when already circular
+         /**
+          * Find without splaying
+          */

 
 
 
 

-           var way = graph.entity(wayId);
-           var nodes = utilArrayUniq(graph.childNodes(way));
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var hull = d3_polygonHull(points);
-           var epsilonAngle = Math.PI / 180;
+         Tree.prototype.findStatic = function (key) {
+           var current = this._root;
+           var compare = this._comparator;

 
 

-           if (hull.length !== points.length || hull.length < 3) {
-             return false;
+           while (current) {
+             var cmp = compare(key, current.key);
+             if (cmp === 0) return current;else if (cmp < 0) current = current.left;else current = current.right;

            }
 
            }
 

-           var centroid = d3_polygonCentroid(points);
-           var radius = geoVecLengthSquare(centroid, points[0]);
-           var i, actualPoint; // compare distances between centroid and points
+           return null;
+         };

 
 

-           for (i = 0; i < hull.length; i++) {
-             actualPoint = hull[i];
-             var actualDist = geoVecLengthSquare(actualPoint, centroid);
-             var diff = Math.abs(actualDist - radius); //compare distances with epsilon-error (5%)
+         Tree.prototype.find = function (key) {
+           if (this._root) {
+             this._root = splay(key, this._root, this._comparator);
+             if (this._comparator(key, this._root.key) !== 0) return null;
+           }

 
 

-             if (diff > 0.05 * radius) {
-               return false;
-             }
-           } //check if central angles are smaller than maxAngle
+           return this._root;
+         };

 
 

+         Tree.prototype.contains = function (key) {
+           var current = this._root;
+           var compare = this._comparator;

 
 

-           for (i = 0; i < hull.length; i++) {
-             actualPoint = hull[i];
-             var nextPoint = hull[(i + 1) % hull.length];
-             var startAngle = Math.atan2(actualPoint[1] - centroid[1], actualPoint[0] - centroid[0]);
-             var endAngle = Math.atan2(nextPoint[1] - centroid[1], nextPoint[0] - centroid[0]);
-             var angle = endAngle - startAngle;
+           while (current) {
+             var cmp = compare(key, current.key);
+             if (cmp === 0) return true;else if (cmp < 0) current = current.left;else current = current.right;
+           }

 
 

-             if (angle < 0) {
-               angle = -angle;
-             }
+           return false;
+         };

 
 

-             if (angle > Math.PI) {
-               angle = 2 * Math.PI - angle;
-             }
+         Tree.prototype.forEach = function (visitor, ctx) {
+           var current = this._root;
+           var Q = [];
+           /* Initialize stack s */

 
 

-             if (angle > maxAngle + epsilonAngle) {
-               return false;
+           var done = false;
+
+           while (!done) {
+             if (current !== null) {
+               Q.push(current);
+               current = current.left;
+             } else {
+               if (Q.length !== 0) {
+                 current = Q.pop();
+                 visitor.call(ctx, current);
+                 current = current.right;
+               } else done = true;

              }
            }
 
              }
            }
 

-           return 'already_circular';
+           return this;

          };
          };

+         /**
+          * Walk key range from `low` to `high`. Stops if `fn` returns a value.
+          */

 
 

-         action.transitionable = true;
-         return action;
-       }

 
 

-       function actionDeleteWay(wayID) {
-         function canDeleteNode(node, graph) {
-           // don't delete nodes still attached to ways or relations
-           if (graph.parentWays(node).length || graph.parentRelations(node).length) return false;
-           var geometries = osmNodeGeometriesForTags(node.tags); // don't delete if this node can be a standalone point
+         Tree.prototype.range = function (low, high, fn, ctx) {
+           var Q = [];
+           var compare = this._comparator;
+           var node = this._root;
+           var cmp;

 
 

-           if (geometries.point) return false; // delete if this node only be a vertex
+           while (Q.length !== 0 || node) {
+             if (node) {
+               Q.push(node);
+               node = node.left;
+             } else {
+               node = Q.pop();
+               cmp = compare(node.key, high);

 
 

-           if (geometries.vertex) return true; // iD doesn't know if this should be a point or vertex,
-           // so only delete if there are no interesting tags
+               if (cmp > 0) {
+                 break;
+               } else if (compare(node.key, low) >= 0) {
+                 if (fn.call(ctx, node)) return this; // stop if smth is returned
+               }

 
 

-           return !node.hasInterestingTags();
-         }
+               node = node.right;
+             }
+           }

 
 

-         var action = function action(graph) {
-           var way = graph.entity(wayID);
-           graph.parentRelations(way).forEach(function (parent) {
-             parent = parent.removeMembersWithID(wayID);
-             graph = graph.replace(parent);
+           return this;
+         };
+         /**
+          * Returns array of keys
+          */

 
 

-             if (parent.isDegenerate()) {
-               graph = actionDeleteRelation(parent.id)(graph);
-             }
+
+         Tree.prototype.keys = function () {
+           var keys = [];
+           this.forEach(function (_a) {
+             var key = _a.key;
+             return keys.push(key);

            });
            });

-           new Set(way.nodes).forEach(function (nodeID) {
-             graph = graph.replace(way.removeNode(nodeID));
-             var node = graph.entity(nodeID);
+           return keys;
+         };
+         /**
+          * Returns array of all the data in the nodes
+          */

 
 

-             if (canDeleteNode(node, graph)) {
-               graph = graph.remove(node);
-             }
+
+         Tree.prototype.values = function () {
+           var values = [];
+           this.forEach(function (_a) {
+             var data = _a.data;
+             return values.push(data);

            });
            });

-           return graph.remove(way);
+           return values;

          };
 
          };
 

-         return action;
-       }
+         Tree.prototype.min = function () {
+           if (this._root) return this.minNode(this._root).key;
+           return null;
+         };

 
 

-       function actionDeleteMultiple(ids) {
-         var actions = {
-           way: actionDeleteWay,
-           node: actionDeleteNode,
-           relation: actionDeleteRelation
+         Tree.prototype.max = function () {
+           if (this._root) return this.maxNode(this._root).key;
+           return null;

          };
 
          };
 

-         var action = function action(graph) {
-           ids.forEach(function (id) {
-             if (graph.hasEntity(id)) {
-               // It may have been deleted already.
-               graph = actions[graph.entity(id).type](id)(graph);
-             }
-           });
-           return graph;
+         Tree.prototype.minNode = function (t) {
+           if (t === void 0) {
+             t = this._root;
+           }
+
+           if (t) while (t.left) {
+             t = t.left;
+           }
+           return t;

          };
 
          };
 

-         return action;
-       }
+         Tree.prototype.maxNode = function (t) {
+           if (t === void 0) {
+             t = this._root;
+           }

 
 

-       function actionDeleteRelation(relationID, allowUntaggedMembers) {
-         function canDeleteEntity(entity, graph) {
-           return !graph.parentWays(entity).length && !graph.parentRelations(entity).length && !entity.hasInterestingTags() && !allowUntaggedMembers;
-         }
+           if (t) while (t.right) {
+             t = t.right;
+           }
+           return t;
+         };
+         /**
+          * Returns node at given index
+          */

 
 

-         var action = function action(graph) {
-           var relation = graph.entity(relationID);
-           graph.parentRelations(relation).forEach(function (parent) {
-             parent = parent.removeMembersWithID(relationID);
-             graph = graph.replace(parent);

 
 

-             if (parent.isDegenerate()) {
-               graph = actionDeleteRelation(parent.id)(graph);
-             }
-           });
-           var memberIDs = utilArrayUniq(relation.members.map(function (m) {
-             return m.id;
-           }));
-           memberIDs.forEach(function (memberID) {
-             graph = graph.replace(relation.removeMembersWithID(memberID));
-             var entity = graph.entity(memberID);
+         Tree.prototype.at = function (index) {
+           var current = this._root;
+           var done = false;
+           var i = 0;
+           var Q = [];

 
 

-             if (canDeleteEntity(entity, graph)) {
-               graph = actionDeleteMultiple([memberID])(graph);
+           while (!done) {
+             if (current) {
+               Q.push(current);
+               current = current.left;
+             } else {
+               if (Q.length > 0) {
+                 current = Q.pop();
+                 if (i === index) return current;
+                 i++;
+                 current = current.right;
+               } else done = true;

              }
              }

-           });
-           return graph.remove(relation);
+           }
+
+           return null;

          };
 
          };
 

-         return action;
-       }
+         Tree.prototype.next = function (d) {
+           var root = this._root;
+           var successor = null;

 
 

-       function actionDeleteNode(nodeId) {
-         var action = function action(graph) {
-           var node = graph.entity(nodeId);
-           graph.parentWays(node).forEach(function (parent) {
-             parent = parent.removeNode(nodeId);
-             graph = graph.replace(parent);
+           if (d.right) {
+             successor = d.right;

 
 

-             if (parent.isDegenerate()) {
-               graph = actionDeleteWay(parent.id)(graph);
+             while (successor.left) {
+               successor = successor.left;

              }
              }

-           });
-           graph.parentRelations(node).forEach(function (parent) {
-             parent = parent.removeMembersWithID(nodeId);
-             graph = graph.replace(parent);

 
 

-             if (parent.isDegenerate()) {
-               graph = actionDeleteRelation(parent.id)(graph);
-             }
-           });
-           return graph.remove(node);
+             return successor;
+           }
+
+           var comparator = this._comparator;
+
+           while (root) {
+             var cmp = comparator(d.key, root.key);
+             if (cmp === 0) break;else if (cmp < 0) {
+               successor = root;
+               root = root.left;
+             } else root = root.right;
+           }
+
+           return successor;

          };
 
          };
 

-         return action;
-       }
+         Tree.prototype.prev = function (d) {
+           var root = this._root;
+           var predecessor = null;

 
 

-       //
-       // First choose a node to be the survivor, with preference given
-       // to an existing (not new) node.
-       //
-       // Tags and relation memberships of of non-surviving nodes are merged
-       // to the survivor.
-       //
-       // This is the inverse of `iD.actionDisconnect`.
-       //
-       // Reference:
-       //   https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MergeNodesAction.as
-       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/MergeNodesAction.java
-       //
+           if (d.left !== null) {
+             predecessor = d.left;

 
 

-       function actionConnect(nodeIDs) {
-         var action = function action(graph) {
-           var survivor;
-           var node;
-           var parents;
-           var i, j; // Choose a survivor node, prefer an existing (not new) node - #4974
+             while (predecessor.right) {
+               predecessor = predecessor.right;
+             }

 
 

-           for (i = 0; i < nodeIDs.length; i++) {
-             survivor = graph.entity(nodeIDs[i]);
-             if (survivor.version) break; // found one
-           } // Replace all non-surviving nodes with the survivor and merge tags.
+             return predecessor;
+           }

 
 

+           var comparator = this._comparator;

 
 

-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             if (node.id === survivor.id) continue;
-             parents = graph.parentWays(node);
+           while (root) {
+             var cmp = comparator(d.key, root.key);
+             if (cmp === 0) break;else if (cmp < 0) root = root.left;else {
+               predecessor = root;
+               root = root.right;
+             }
+           }
+
+           return predecessor;
+         };
+
+         Tree.prototype.clear = function () {
+           this._root = null;
+           this._size = 0;
+           return this;
+         };

 
 

-             for (j = 0; j < parents.length; j++) {
-               graph = graph.replace(parents[j].replaceNode(node.id, survivor.id));
-             }
+         Tree.prototype.toList = function () {
+           return toList(this._root);
+         };
+         /**
+          * Bulk-load items. Both array have to be same size
+          */

 
 

-             parents = graph.parentRelations(node);

 
 

-             for (j = 0; j < parents.length; j++) {
-               graph = graph.replace(parents[j].replaceMember(node, survivor));
-             }
+         Tree.prototype.load = function (keys, values, presort) {
+           if (values === void 0) {
+             values = [];
+           }

 
 

-             survivor = survivor.mergeTags(node.tags);
-             graph = actionDeleteNode(node.id)(graph);
+           if (presort === void 0) {
+             presort = false;

            }
 
            }
 

-           graph = graph.replace(survivor); // find and delete any degenerate ways created by connecting adjacent vertices
+           var size = keys.length;
+           var comparator = this._comparator; // sort if needed

 
 

-           parents = graph.parentWays(survivor);
+           if (presort) sort(keys, values, 0, size - 1, comparator);

 
 

-           for (i = 0; i < parents.length; i++) {
-             if (parents[i].isDegenerate()) {
-               graph = actionDeleteWay(parents[i].id)(graph);
-             }
+           if (this._root === null) {
+             // empty tree
+             this._root = loadRecursive(keys, values, 0, size);
+             this._size = size;
+           } else {
+             // that re-builds the whole tree from two in-order traversals
+             var mergedList = mergeLists(this.toList(), createList(keys, values), comparator);
+             size = this._size + size;
+             this._root = sortedListToBST({
+               head: mergedList
+             }, 0, size);

            }
 
            }
 

-           return graph;
+           return this;

          };
 
          };
 

-         action.disabled = function (graph) {
-           var seen = {};
-           var restrictionIDs = [];
-           var survivor;
-           var node, way;
-           var relations, relation, role;
-           var i, j, k; // Choose a survivor node, prefer an existing (not new) node - #4974
+         Tree.prototype.isEmpty = function () {
+           return this._root === null;
+         };

 
 

-           for (i = 0; i < nodeIDs.length; i++) {
-             survivor = graph.entity(nodeIDs[i]);
-             if (survivor.version) break; // found one
-           } // 1. disable if the nodes being connected have conflicting relation roles
+         Object.defineProperty(Tree.prototype, "size", {
+           get: function get() {
+             return this._size;
+           },
+           enumerable: true,
+           configurable: true
+         });
+         Object.defineProperty(Tree.prototype, "root", {
+           get: function get() {
+             return this._root;
+           },
+           enumerable: true,
+           configurable: true
+         });

 
 

+         Tree.prototype.toString = function (printNode) {
+           if (printNode === void 0) {
+             printNode = function printNode(n) {
+               return String(n.key);
+             };
+           }

 
 

-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             relations = graph.parentRelations(node);
+           var out = [];
+           printRow(this._root, '', true, function (v) {
+             return out.push(v);
+           }, printNode);
+           return out.join('');
+         };

 
 

-             for (j = 0; j < relations.length; j++) {
-               relation = relations[j];
-               role = relation.memberById(node.id).role || ''; // if this node is a via node in a restriction, remember for later
+         Tree.prototype.update = function (key, newKey, newData) {
+           var comparator = this._comparator;

 
 

-               if (relation.hasFromViaTo()) {
-                 restrictionIDs.push(relation.id);
-               }
+           var _a = split(key, this._root, comparator),
+               left = _a.left,
+               right = _a.right;

 
 

-               if (seen[relation.id] !== undefined && seen[relation.id] !== role) {
-                 return 'relation';
-               } else {
-                 seen[relation.id] = role;
-               }
-             }
-           } // gather restrictions for parent ways
+           if (comparator(key, newKey) < 0) {
+             right = insert(newKey, newData, right, comparator);
+           } else {
+             left = insert(newKey, newData, left, comparator);
+           }

 
 

+           this._root = merge$3(left, right, comparator);
+         };

 
 

-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             var parents = graph.parentWays(node);
+         Tree.prototype.split = function (key) {
+           return split(key, this._root, this._comparator);
+         };

 
 

-             for (j = 0; j < parents.length; j++) {
-               var parent = parents[j];
-               relations = graph.parentRelations(parent);
+         return Tree;
+       }();

 
 

-               for (k = 0; k < relations.length; k++) {
-                 relation = relations[k];
+       function loadRecursive(keys, values, start, end) {
+         var size = end - start;

 
 

-                 if (relation.hasFromViaTo()) {
-                   restrictionIDs.push(relation.id);
-                 }
-               }
-             }
-           } // test restrictions
+         if (size > 0) {
+           var middle = start + Math.floor(size / 2);
+           var key = keys[middle];
+           var data = values[middle];
+           var node = new Node(key, data);
+           node.left = loadRecursive(keys, values, start, middle);
+           node.right = loadRecursive(keys, values, middle + 1, end);
+           return node;
+         }

 
 

+         return null;
+       }

 
 

-           restrictionIDs = utilArrayUniq(restrictionIDs);
+       function createList(keys, values) {
+         var head = new Node(null, null);
+         var p = head;

 
 

-           for (i = 0; i < restrictionIDs.length; i++) {
-             relation = graph.entity(restrictionIDs[i]);
-             if (!relation.isComplete(graph)) continue;
-             var memberWays = relation.members.filter(function (m) {
-               return m.type === 'way';
-             }).map(function (m) {
-               return graph.entity(m.id);
-             });
-             memberWays = utilArrayUniq(memberWays);
-             var f = relation.memberByRole('from');
-             var t = relation.memberByRole('to');
-             var isUturn = f.id === t.id; // 2a. disable if connection would damage a restriction
-             // (a key node is a node at the junction of ways)
+         for (var i = 0; i < keys.length; i++) {
+           p = p.next = new Node(keys[i], values[i]);
+         }

 
 

-             var nodes = {
-               from: [],
-               via: [],
-               to: [],
-               keyfrom: [],
-               keyto: []
-             };
+         p.next = null;
+         return head.next;
+       }

 
 

-             for (j = 0; j < relation.members.length; j++) {
-               collectNodes(relation.members[j], nodes);
-             }
+       function toList(root) {
+         var current = root;
+         var Q = [];
+         var done = false;
+         var head = new Node(null, null);
+         var p = head;

 
 

-             nodes.keyfrom = utilArrayUniq(nodes.keyfrom.filter(hasDuplicates));
-             nodes.keyto = utilArrayUniq(nodes.keyto.filter(hasDuplicates));
-             var filter = keyNodeFilter(nodes.keyfrom, nodes.keyto);
-             nodes.from = nodes.from.filter(filter);
-             nodes.via = nodes.via.filter(filter);
-             nodes.to = nodes.to.filter(filter);
-             var connectFrom = false;
-             var connectVia = false;
-             var connectTo = false;
-             var connectKeyFrom = false;
-             var connectKeyTo = false;
+         while (!done) {
+           if (current) {
+             Q.push(current);
+             current = current.left;
+           } else {
+             if (Q.length > 0) {
+               current = p = p.next = Q.pop();
+               current = current.right;
+             } else done = true;
+           }
+         }

 
 

-             for (j = 0; j < nodeIDs.length; j++) {
-               var n = nodeIDs[j];
+         p.next = null; // that'll work even if the tree was empty

 
 

-               if (nodes.from.indexOf(n) !== -1) {
-                 connectFrom = true;
-               }
+         return head.next;
+       }

 
 

-               if (nodes.via.indexOf(n) !== -1) {
-                 connectVia = true;
-               }
+       function sortedListToBST(list, start, end) {
+         var size = end - start;

 
 

-               if (nodes.to.indexOf(n) !== -1) {
-                 connectTo = true;
-               }
+         if (size > 0) {
+           var middle = start + Math.floor(size / 2);
+           var left = sortedListToBST(list, start, middle);
+           var root = list.head;
+           root.left = left;
+           list.head = list.head.next;
+           root.right = sortedListToBST(list, middle + 1, end);
+           return root;
+         }

 
 

-               if (nodes.keyfrom.indexOf(n) !== -1) {
-                 connectKeyFrom = true;
-               }
+         return null;
+       }

 
 

-               if (nodes.keyto.indexOf(n) !== -1) {
-                 connectKeyTo = true;
-               }
-             }
+       function mergeLists(l1, l2, compare) {
+         var head = new Node(null, null); // dummy

 
 

-             if (connectFrom && connectTo && !isUturn) {
-               return 'restriction';
-             }
+         var p = head;
+         var p1 = l1;
+         var p2 = l2;

 
 

-             if (connectFrom && connectVia) {
-               return 'restriction';
-             }
+         while (p1 !== null && p2 !== null) {
+           if (compare(p1.key, p2.key) < 0) {
+             p.next = p1;
+             p1 = p1.next;
+           } else {
+             p.next = p2;
+             p2 = p2.next;
+           }

 
 

-             if (connectTo && connectVia) {
-               return 'restriction';
-             } // connecting to a key node -
-             // if both nodes are on a member way (i.e. part of the turn restriction),
-             // the connecting node must be adjacent to the key node.
+           p = p.next;
+         }

 
 

+         if (p1 !== null) {
+           p.next = p1;
+         } else if (p2 !== null) {
+           p.next = p2;
+         }

 
 

-             if (connectKeyFrom || connectKeyTo) {
-               if (nodeIDs.length !== 2) {
-                 return 'restriction';
-               }
+         return head.next;
+       }

 
 

-               var n0 = null;
-               var n1 = null;
+       function sort(keys, values, left, right, compare) {
+         if (left >= right) return;
+         var pivot = keys[left + right >> 1];
+         var i = left - 1;
+         var j = right + 1;

 
 

-               for (j = 0; j < memberWays.length; j++) {
-                 way = memberWays[j];
+         while (true) {
+           do {
+             i++;
+           } while (compare(keys[i], pivot) < 0);

 
 

-                 if (way.contains(nodeIDs[0])) {
-                   n0 = nodeIDs[0];
-                 }
+           do {
+             j--;
+           } while (compare(keys[j], pivot) > 0);

 
 

-                 if (way.contains(nodeIDs[1])) {
-                   n1 = nodeIDs[1];
-                 }
-               }
+           if (i >= j) break;
+           var tmp = keys[i];
+           keys[i] = keys[j];
+           keys[j] = tmp;
+           tmp = values[i];
+           values[i] = values[j];
+           values[j] = tmp;
+         }

 
 

-               if (n0 && n1) {
-                 // both nodes are part of the restriction
-                 var ok = false;
+         sort(keys, values, left, j, compare);
+         sort(keys, values, j + 1, right, compare);
+       }

 
 

-                 for (j = 0; j < memberWays.length; j++) {
-                   way = memberWays[j];
+       function _classCallCheck(instance, Constructor) {
+         if (!(instance instanceof Constructor)) {
+           throw new TypeError("Cannot call a class as a function");
+         }
+       }

 
 

-                   if (way.areAdjacent(n0, n1)) {
-                     ok = true;
-                     break;
-                   }
-                 }
+       function _defineProperties(target, props) {
+         for (var i = 0; i < props.length; i++) {
+           var descriptor = props[i];
+           descriptor.enumerable = descriptor.enumerable || false;
+           descriptor.configurable = true;
+           if ("value" in descriptor) descriptor.writable = true;
+           Object.defineProperty(target, descriptor.key, descriptor);
+         }
+       }

 
 

-                 if (!ok) {
-                   return 'restriction';
-                 }
-               }
-             } // 2b. disable if nodes being connected will destroy a member way in a restriction
-             // (to test, make a copy and try actually connecting the nodes)
+       function _createClass(Constructor, protoProps, staticProps) {
+         if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+         if (staticProps) _defineProperties(Constructor, staticProps);
+         return Constructor;
+       }
+       /**
+        * A bounding box has the format:
+        *
+        *  { ll: { x: xmin, y: ymin }, ur: { x: xmax, y: ymax } }
+        *
+        */

 
 
 
 

-             for (j = 0; j < memberWays.length; j++) {
-               way = memberWays[j].update({}); // make copy
+       var isInBbox = function isInBbox(bbox, point) {
+         return bbox.ll.x <= point.x && point.x <= bbox.ur.x && bbox.ll.y <= point.y && point.y <= bbox.ur.y;
+       };
+       /* Returns either null, or a bbox (aka an ordered pair of points)
+        * If there is only one point of overlap, a bbox with identical points
+        * will be returned */

 
 

-               for (k = 0; k < nodeIDs.length; k++) {
-                 if (nodeIDs[k] === survivor.id) continue;

 
 

-                 if (way.areAdjacent(nodeIDs[k], survivor.id)) {
-                   way = way.removeNode(nodeIDs[k]);
-                 } else {
-                   way = way.replaceNode(nodeIDs[k], survivor.id);
-                 }
-               }
+       var getBboxOverlap = function getBboxOverlap(b1, b2) {
+         // check if the bboxes overlap at all
+         if (b2.ur.x < b1.ll.x || b1.ur.x < b2.ll.x || b2.ur.y < b1.ll.y || b1.ur.y < b2.ll.y) return null; // find the middle two X values

 
 

-               if (way.isDegenerate()) {
-                 return 'restriction';
-               }
-             }
-           }
+         var lowerX = b1.ll.x < b2.ll.x ? b2.ll.x : b1.ll.x;
+         var upperX = b1.ur.x < b2.ur.x ? b1.ur.x : b2.ur.x; // find the middle two Y values

 
 

-           return false; // if a key node appears multiple times (indexOf !== lastIndexOf) it's a FROM-VIA or TO-VIA junction
+         var lowerY = b1.ll.y < b2.ll.y ? b2.ll.y : b1.ll.y;
+         var upperY = b1.ur.y < b2.ur.y ? b1.ur.y : b2.ur.y; // put those middle values together to get the overlap

 
 

-           function hasDuplicates(n, i, arr) {
-             return arr.indexOf(n) !== arr.lastIndexOf(n);
+         return {
+           ll: {
+             x: lowerX,
+             y: lowerY
+           },
+           ur: {
+             x: upperX,
+             y: upperY

            }
            }

+         };
+       };
+       /* Javascript doesn't do integer math. Everything is
+        * floating point with percision Number.EPSILON.
+        *
+        * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/EPSILON
+        */

 
 

-           function keyNodeFilter(froms, tos) {
-             return function (n) {
-               return froms.indexOf(n) === -1 && tos.indexOf(n) === -1;
-             };
-           }

 
 

-           function collectNodes(member, collection) {
-             var entity = graph.hasEntity(member.id);
-             if (!entity) return;
-             var role = member.role || '';
+       var epsilon = Number.EPSILON; // IE Polyfill

 
 

-             if (!collection[role]) {
-               collection[role] = [];
-             }
+       if (epsilon === undefined) epsilon = Math.pow(2, -52);
+       var EPSILON_SQ = epsilon * epsilon;
+       /* FLP comparator */

 
 

-             if (member.type === 'node') {
-               collection[role].push(member.id);
+       var cmp = function cmp(a, b) {
+         // check if they're both 0
+         if (-epsilon < a && a < epsilon) {
+           if (-epsilon < b && b < epsilon) {
+             return 0;
+           }
+         } // check if they're flp equal

 
 

-               if (role === 'via') {
-                 collection.keyfrom.push(member.id);
-                 collection.keyto.push(member.id);
-               }
-             } else if (member.type === 'way') {
-               collection[role].push.apply(collection[role], entity.nodes);

 
 

-               if (role === 'from' || role === 'via') {
-                 collection.keyfrom.push(entity.first());
-                 collection.keyfrom.push(entity.last());
-               }
+         var ab = a - b;

 
 

-               if (role === 'to' || role === 'via') {
-                 collection.keyto.push(entity.first());
-                 collection.keyto.push(entity.last());
-               }
-             }
-           }
-         };
+         if (ab * ab < EPSILON_SQ * a * b) {
+           return 0;
+         } // normal comparison

 
 

-         return action;
-       }

 
 

-       function actionCopyEntities(ids, fromGraph) {
-         var _copies = {};
+         return a < b ? -1 : 1;
+       };
+       /**
+        * This class rounds incoming values sufficiently so that
+        * floating points problems are, for the most part, avoided.
+        *
+        * Incoming points are have their x & y values tested against
+        * all previously seen x & y values. If either is 'too close'
+        * to a previously seen value, it's value is 'snapped' to the
+        * previously seen value.
+        *
+        * All points should be rounded by this class before being
+        * stored in any data structures in the rest of this algorithm.
+        */

 
 

-         var action = function action(graph) {
-           ids.forEach(function (id) {
-             fromGraph.entity(id).copy(fromGraph, _copies);
-           });

 
 

-           for (var id in _copies) {
-             graph = graph.replace(_copies[id]);
-           }
+       var PtRounder = /*#__PURE__*/function () {
+         function PtRounder() {
+           _classCallCheck(this, PtRounder);

 
 

-           return graph;
-         };
+           this.reset();
+         }

 
 

-         action.copies = function () {
-           return _copies;
-         };
+         _createClass(PtRounder, [{
+           key: "reset",
+           value: function reset() {
+             this.xRounder = new CoordRounder();
+             this.yRounder = new CoordRounder();
+           }
+         }, {
+           key: "round",
+           value: function round(x, y) {
+             return {
+               x: this.xRounder.round(x),
+               y: this.yRounder.round(y)
+             };
+           }
+         }]);

 
 

-         return action;
-       }
+         return PtRounder;
+       }();

 
 

-       function actionDeleteMember(relationId, memberIndex) {
-         return function (graph) {
-           var relation = graph.entity(relationId).removeMember(memberIndex);
-           graph = graph.replace(relation);
-           if (relation.isDegenerate()) graph = actionDeleteRelation(relation.id)(graph);
-           return graph;
-         };
-       }
+       var CoordRounder = /*#__PURE__*/function () {
+         function CoordRounder() {
+           _classCallCheck(this, CoordRounder);

 
 

-       function actionDiscardTags(difference, discardTags) {
-         discardTags = discardTags || {};
-         return function (graph) {
-           difference.modified().forEach(checkTags);
-           difference.created().forEach(checkTags);
-           return graph;
+           this.tree = new Tree(); // preseed with 0 so we don't end up with values < Number.EPSILON

 
 

-           function checkTags(entity) {
-             var keys = Object.keys(entity.tags);
-             var didDiscard = false;
-             var tags = {};
+           this.round(0);
+         } // Note: this can rounds input values backwards or forwards.
+         //       You might ask, why not restrict this to just rounding
+         //       forwards? Wouldn't that allow left endpoints to always
+         //       remain left endpoints during splitting (never change to
+         //       right). No - it wouldn't, because we snap intersections
+         //       to endpoints (to establish independence from the segment
+         //       angle for t-intersections).

 
 

-             for (var i = 0; i < keys.length; i++) {
-               var k = keys[i];

 
 

-               if (discardTags[k] || !entity.tags[k]) {
-                 didDiscard = true;
-               } else {
-                 tags[k] = entity.tags[k];
-               }
+         _createClass(CoordRounder, [{
+           key: "round",
+           value: function round(coord) {
+             var node = this.tree.add(coord);
+             var prevNode = this.tree.prev(node);
+
+             if (prevNode !== null && cmp(node.key, prevNode.key) === 0) {
+               this.tree.remove(coord);
+               return prevNode.key;

              }
 
              }
 

-             if (didDiscard) {
-               graph = graph.replace(entity.update({
-                 tags: tags
-               }));
+             var nextNode = this.tree.next(node);
+
+             if (nextNode !== null && cmp(node.key, nextNode.key) === 0) {
+               this.tree.remove(coord);
+               return nextNode.key;

              }
              }

+
+             return coord;

            }
            }

-         };
-       }
+         }]);

 
 

-       //
-       // Optionally, disconnect only the given ways.
-       //
-       // For testing convenience, accepts an ID to assign to the (first) new node.
-       // Normally, this will be undefined and the way will automatically
-       // be assigned a new ID.
-       //
-       // This is the inverse of `iD.actionConnect`.
-       //
-       // Reference:
-       //   https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/UnjoinNodeAction.as
-       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/UnGlueAction.java
-       //
+         return CoordRounder;
+       }(); // singleton available by import
+
+
+       var rounder = new PtRounder();
+       /* Cross Product of two vectors with first point at origin */

 
 

-       function actionDisconnect(nodeId, newNodeId) {
-         var wayIds;
+       var crossProduct = function crossProduct(a, b) {
+         return a.x * b.y - a.y * b.x;
+       };
+       /* Dot Product of two vectors with first point at origin */

 
 

-         var action = function action(graph) {
-           var node = graph.entity(nodeId);
-           var connections = action.connections(graph);
-           connections.forEach(function (connection) {
-             var way = graph.entity(connection.wayID);
-             var newNode = osmNode({
-               id: newNodeId,
-               loc: node.loc,
-               tags: node.tags
-             });
-             graph = graph.replace(newNode);

 
 

-             if (connection.index === 0 && way.isArea()) {
-               // replace shared node with shared node..
-               graph = graph.replace(way.replaceNode(way.nodes[0], newNode.id));
-             } else if (way.isClosed() && connection.index === way.nodes.length - 1) {
-               // replace closing node with new new node..
-               graph = graph.replace(way.unclose().addNode(newNode.id));
-             } else {
-               // replace shared node with multiple new nodes..
-               graph = graph.replace(way.updateNode(newNode.id, connection.index));
-             }
-           });
-           return graph;
+       var dotProduct = function dotProduct(a, b) {
+         return a.x * b.x + a.y * b.y;
+       };
+       /* Comparator for two vectors with same starting point */
+
+
+       var compareVectorAngles = function compareVectorAngles(basePt, endPt1, endPt2) {
+         var v1 = {
+           x: endPt1.x - basePt.x,
+           y: endPt1.y - basePt.y
+         };
+         var v2 = {
+           x: endPt2.x - basePt.x,
+           y: endPt2.y - basePt.y

          };
          };

+         var kross = crossProduct(v1, v2);
+         return cmp(kross, 0);
+       };

 
 

-         action.connections = function (graph) {
-           var candidates = [];
-           var keeping = false;
-           var parentWays = graph.parentWays(graph.entity(nodeId));
-           var way, waynode;
+       var length = function length(v) {
+         return Math.sqrt(dotProduct(v, v));
+       };
+       /* Get the sine of the angle from pShared -> pAngle to pShaed -> pBase */

 
 

-           for (var i = 0; i < parentWays.length; i++) {
-             way = parentWays[i];

 
 

-             if (wayIds && wayIds.indexOf(way.id) === -1) {
-               keeping = true;
-               continue;
-             }
+       var sineOfAngle = function sineOfAngle(pShared, pBase, pAngle) {
+         var vBase = {
+           x: pBase.x - pShared.x,
+           y: pBase.y - pShared.y
+         };
+         var vAngle = {
+           x: pAngle.x - pShared.x,
+           y: pAngle.y - pShared.y
+         };
+         return crossProduct(vAngle, vBase) / length(vAngle) / length(vBase);
+       };
+       /* Get the cosine of the angle from pShared -> pAngle to pShaed -> pBase */

 
 

-             if (way.isArea() && way.nodes[0] === nodeId) {
-               candidates.push({
-                 wayID: way.id,
-                 index: 0
-               });
-             } else {
-               for (var j = 0; j < way.nodes.length; j++) {
-                 waynode = way.nodes[j];

 
 

-                 if (waynode === nodeId) {
-                   if (way.isClosed() && parentWays.length > 1 && wayIds && wayIds.indexOf(way.id) !== -1 && j === way.nodes.length - 1) {
-                     continue;
-                   }
+       var cosineOfAngle = function cosineOfAngle(pShared, pBase, pAngle) {
+         var vBase = {
+           x: pBase.x - pShared.x,
+           y: pBase.y - pShared.y
+         };
+         var vAngle = {
+           x: pAngle.x - pShared.x,
+           y: pAngle.y - pShared.y
+         };
+         return dotProduct(vAngle, vBase) / length(vAngle) / length(vBase);
+       };
+       /* Get the x coordinate where the given line (defined by a point and vector)
+        * crosses the horizontal line with the given y coordiante.
+        * In the case of parrallel lines (including overlapping ones) returns null. */

 
 

-                   candidates.push({
-                     wayID: way.id,
-                     index: j
-                   });
-                 }
-               }
-             }
-           }

 
 

-           return keeping ? candidates : candidates.slice(1);
+       var horizontalIntersection = function horizontalIntersection(pt, v, y) {
+         if (v.y === 0) return null;
+         return {
+           x: pt.x + v.x / v.y * (y - pt.y),
+           y: y

          };
          };

+       };
+       /* Get the y coordinate where the given line (defined by a point and vector)
+        * crosses the vertical line with the given x coordiante.
+        * In the case of parrallel lines (including overlapping ones) returns null. */

 
 

-         action.disabled = function (graph) {
-           var connections = action.connections(graph);
-           if (connections.length === 0) return 'not_connected';
-           var parentWays = graph.parentWays(graph.entity(nodeId));
-           var seenRelationIds = {};
-           var sharedRelation;
-           parentWays.forEach(function (way) {
-             var relations = graph.parentRelations(way);
-             relations.forEach(function (relation) {
-               if (relation.id in seenRelationIds) {
-                 if (wayIds) {
-                   if (wayIds.indexOf(way.id) !== -1 || wayIds.indexOf(seenRelationIds[relation.id]) !== -1) {
-                     sharedRelation = relation;
-                   }
-                 } else {
-                   sharedRelation = relation;
-                 }
-               } else {
-                 seenRelationIds[relation.id] = way.id;
-               }
-             });
-           });
-           if (sharedRelation) return 'relation';
+
+       var verticalIntersection = function verticalIntersection(pt, v, x) {
+         if (v.x === 0) return null;
+         return {
+           x: x,
+           y: pt.y + v.y / v.x * (x - pt.x)

          };
          };

+       };
+       /* Get the intersection of two lines, each defined by a base point and a vector.
+        * In the case of parrallel lines (including overlapping ones) returns null. */

 
 

-         action.limitWays = function (val) {
-           if (!arguments.length) return wayIds;
-           wayIds = val;
-           return action;
+
+       var intersection = function intersection(pt1, v1, pt2, v2) {
+         // take some shortcuts for vertical and horizontal lines
+         // this also ensures we don't calculate an intersection and then discover
+         // it's actually outside the bounding box of the line
+         if (v1.x === 0) return verticalIntersection(pt2, v2, pt1.x);
+         if (v2.x === 0) return verticalIntersection(pt1, v1, pt2.x);
+         if (v1.y === 0) return horizontalIntersection(pt2, v2, pt1.y);
+         if (v2.y === 0) return horizontalIntersection(pt1, v1, pt2.y); // General case for non-overlapping segments.
+         // This algorithm is based on Schneider and Eberly.
+         // http://www.cimec.org.ar/~ncalvo/Schneider_Eberly.pdf - pg 244
+
+         var kross = crossProduct(v1, v2);
+         if (kross == 0) return null;
+         var ve = {
+           x: pt2.x - pt1.x,
+           y: pt2.y - pt1.y

          };
          };

+         var d1 = crossProduct(ve, v1) / kross;
+         var d2 = crossProduct(ve, v2) / kross; // take the average of the two calculations to minimize rounding error

 
 

-         return action;
-       }
+         var x1 = pt1.x + d2 * v1.x,
+             x2 = pt2.x + d1 * v2.x;
+         var y1 = pt1.y + d2 * v1.y,
+             y2 = pt2.y + d1 * v2.y;
+         var x = (x1 + x2) / 2;
+         var y = (y1 + y2) / 2;
+         return {
+           x: x,
+           y: y
+         };
+       };

 
 

-       function actionExtract(entityID) {
-         var extractedNodeID;
+       var SweepEvent = /*#__PURE__*/function () {
+         _createClass(SweepEvent, null, [{
+           key: "compare",
+           // for ordering sweep events in the sweep event queue
+           value: function compare(a, b) {
+             // favor event with a point that the sweep line hits first
+             var ptCmp = SweepEvent.comparePoints(a.point, b.point);
+             if (ptCmp !== 0) return ptCmp; // the points are the same, so link them if needed

 
 

-         var action = function action(graph) {
-           var entity = graph.entity(entityID);
+             if (a.point !== b.point) a.link(b); // favor right events over left

 
 

-           if (entity.type === 'node') {
-             return extractFromNode(entity, graph);
-           }
+             if (a.isLeft !== b.isLeft) return a.isLeft ? 1 : -1; // we have two matching left or right endpoints
+             // ordering of this case is the same as for their segments

 
 

-           return extractFromWayOrRelation(entity, graph);
-         };
+             return Segment.compare(a.segment, b.segment);
+           } // for ordering points in sweep line order

 
 

-         function extractFromNode(node, graph) {
-           extractedNodeID = node.id; // Create a new node to replace the one we will detach
+         }, {
+           key: "comparePoints",
+           value: function comparePoints(aPt, bPt) {
+             if (aPt.x < bPt.x) return -1;
+             if (aPt.x > bPt.x) return 1;
+             if (aPt.y < bPt.y) return -1;
+             if (aPt.y > bPt.y) return 1;
+             return 0;
+           } // Warning: 'point' input will be modified and re-used (for performance)

 
 

-           var replacement = osmNode({
-             loc: node.loc
-           });
-           graph = graph.replace(replacement); // Process each way in turn, updating the graph as we go
+         }]);

 
 

-           graph = graph.parentWays(node).reduce(function (accGraph, parentWay) {
-             return accGraph.replace(parentWay.replaceNode(entityID, replacement.id));
-           }, graph); // Process any relations too
+         function SweepEvent(point, isLeft) {
+           _classCallCheck(this, SweepEvent);

 
 

-           return graph.parentRelations(node).reduce(function (accGraph, parentRel) {
-             return accGraph.replace(parentRel.replaceMember(node, replacement));
-           }, graph);
+           if (point.events === undefined) point.events = [this];else point.events.push(this);
+           this.point = point;
+           this.isLeft = isLeft; // this.segment, this.otherSE set by factory

          }
 
          }
 

-         function extractFromWayOrRelation(entity, graph) {
-           var fromGeometry = entity.geometry(graph);
-           var keysToCopyAndRetain = ['source', 'wheelchair'];
-           var keysToRetain = ['area'];
-           var buildingKeysToRetain = ['architect', 'building', 'height', 'layer'];
-           var extractedLoc = d3_geoCentroid(entity.asGeoJSON(graph));
+         _createClass(SweepEvent, [{
+           key: "link",
+           value: function link(other) {
+             if (other.point === this.point) {
+               throw new Error('Tried to link already linked events');
+             }

 
 

-           if (!extractedLoc || !isFinite(extractedLoc[0]) || !isFinite(extractedLoc[1])) {
-             extractedLoc = entity.extent(graph).center();
+             var otherEvents = other.point.events;
+
+             for (var i = 0, iMax = otherEvents.length; i < iMax; i++) {
+               var evt = otherEvents[i];
+               this.point.events.push(evt);
+               evt.point = this.point;
+             }
+
+             this.checkForConsuming();

            }
            }

+           /* Do a pass over our linked events and check to see if any pair
+            * of segments match, and should be consumed. */

 
 

-           var indoorAreaValues = {
-             area: true,
-             corridor: true,
-             elevator: true,
-             level: true,
-             room: true
-           };
-           var isBuilding = entity.tags.building && entity.tags.building !== 'no' || entity.tags['building:part'] && entity.tags['building:part'] !== 'no';
-           var isIndoorArea = fromGeometry === 'area' && entity.tags.indoor && indoorAreaValues[entity.tags.indoor];
-           var entityTags = Object.assign({}, entity.tags); // shallow copy
+         }, {
+           key: "checkForConsuming",
+           value: function checkForConsuming() {
+             // FIXME: The loops in this method run O(n^2) => no good.
+             //        Maintain little ordered sweep event trees?
+             //        Can we maintaining an ordering that avoids the need
+             //        for the re-sorting with getLeftmostComparator in geom-out?
+             // Compare each pair of events to see if other events also match
+             var numEvents = this.point.events.length;

 
 

-           var pointTags = {};
+             for (var i = 0; i < numEvents; i++) {
+               var evt1 = this.point.events[i];
+               if (evt1.segment.consumedBy !== undefined) continue;

 
 

-           for (var key in entityTags) {
-             if (entity.type === 'relation' && key === 'type') {
-               continue;
+               for (var j = i + 1; j < numEvents; j++) {
+                 var evt2 = this.point.events[j];
+                 if (evt2.consumedBy !== undefined) continue;
+                 if (evt1.otherSE.point.events !== evt2.otherSE.point.events) continue;
+                 evt1.segment.consume(evt2.segment);
+               }

              }
              }

+           }
+         }, {
+           key: "getAvailableLinkedEvents",
+           value: function getAvailableLinkedEvents() {
+             // point.events is always of length 2 or greater
+             var events = [];

 
 

-             if (keysToRetain.indexOf(key) !== -1) {
-               continue;
+             for (var i = 0, iMax = this.point.events.length; i < iMax; i++) {
+               var evt = this.point.events[i];
+
+               if (evt !== this && !evt.segment.ringOut && evt.segment.isInResult()) {
+                 events.push(evt);
+               }

              }
 
              }
 

-             if (isBuilding) {
-               // don't transfer building-related tags
-               if (buildingKeysToRetain.indexOf(key) !== -1 || key.match(/^building:.{1,}/) || key.match(/^roof:.{1,}/)) continue;
-             } // leave `indoor` tag on the area
+             return events;
+           }
+           /**
+            * Returns a comparator function for sorting linked events that will
+            * favor the event that will give us the smallest left-side angle.
+            * All ring construction starts as low as possible heading to the right,
+            * so by always turning left as sharp as possible we'll get polygons
+            * without uncessary loops & holes.
+            *
+            * The comparator function has a compute cache such that it avoids
+            * re-computing already-computed values.
+            */

 
 

+         }, {
+           key: "getLeftmostComparator",
+           value: function getLeftmostComparator(baseEvent) {
+             var _this = this;

 
 

-             if (isIndoorArea && key === 'indoor') {
-               continue;
-             } // copy the tag from the entity to the point
+             var cache = new Map();

 
 

+             var fillCache = function fillCache(linkedEvent) {
+               var nextEvent = linkedEvent.otherSE;
+               cache.set(linkedEvent, {
+                 sine: sineOfAngle(_this.point, baseEvent.point, nextEvent.point),
+                 cosine: cosineOfAngle(_this.point, baseEvent.point, nextEvent.point)
+               });
+             };

 
 

-             pointTags[key] = entityTags[key]; // leave addresses and some other tags so they're on both features
+             return function (a, b) {
+               if (!cache.has(a)) fillCache(a);
+               if (!cache.has(b)) fillCache(b);

 
 

-             if (keysToCopyAndRetain.indexOf(key) !== -1 || key.match(/^addr:.{1,}/)) {
-               continue;
-             } else if (isIndoorArea && key === 'level') {
-               // leave `level` on both features
-               continue;
-             } // remove the tag from the entity
+               var _cache$get = cache.get(a),
+                   asine = _cache$get.sine,
+                   acosine = _cache$get.cosine;

 
 

+               var _cache$get2 = cache.get(b),
+                   bsine = _cache$get2.sine,
+                   bcosine = _cache$get2.cosine; // both on or above x-axis

 
 

-             delete entityTags[key];
-           }

 
 

-           if (!isBuilding && !isIndoorArea && fromGeometry === 'area') {
-             // ensure that areas keep area geometry
-             entityTags.area = 'yes';
-           }
+               if (asine >= 0 && bsine >= 0) {
+                 if (acosine < bcosine) return 1;
+                 if (acosine > bcosine) return -1;
+                 return 0;
+               } // both below x-axis

 
 

-           var replacement = osmNode({
-             loc: extractedLoc,
-             tags: pointTags
-           });
-           graph = graph.replace(replacement);
-           extractedNodeID = replacement.id;
-           return graph.replace(entity.update({
-             tags: entityTags
-           }));
-         }

 
 

-         action.getExtractedNodeID = function () {
-           return extractedNodeID;
-         };
+               if (asine < 0 && bsine < 0) {
+                 if (acosine < bcosine) return -1;
+                 if (acosine > bcosine) return 1;
+                 return 0;
+               } // one above x-axis, one below

 
 

-         return action;
-       }

 
 

-       //
-       // This is the inverse of `iD.actionSplit`.
-       //
-       // Reference:
-       //   https://github.com/systemed/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MergeWaysAction.as
-       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/CombineWayAction.java
-       //
+               if (bsine < asine) return -1;
+               if (bsine > asine) return 1;
+               return 0;
+             };
+           }
+         }]);

 
 

-       function actionJoin(ids) {
-         function groupEntitiesByGeometry(graph) {
-           var entities = ids.map(function (id) {
-             return graph.entity(id);
-           });
-           return Object.assign({
-             line: []
-           }, utilArrayGroupBy(entities, function (entity) {
-             return entity.geometry(graph);
-           }));
-         }
+         return SweepEvent;
+       }(); // segments and sweep events when all else is identical

 
 

-         var action = function action(graph) {
-           var ways = ids.map(graph.entity, graph);
-           var survivorID = ways[0].id; // if any of the ways are sided (e.g. coastline, cliff, kerb)
-           // sort them first so they establish the overall order - #6033

 
 

-           ways.sort(function (a, b) {
-             var aSided = a.isSided();
-             var bSided = b.isSided();
-             return aSided && !bSided ? -1 : bSided && !aSided ? 1 : 0;
-           }); // Prefer to keep an existing way.
+       var segmentId = 0;

 
 

-           for (var i = 0; i < ways.length; i++) {
-             if (!ways[i].isNew()) {
-               survivorID = ways[i].id;
-               break;
-             }
-           }
+       var Segment = /*#__PURE__*/function () {
+         _createClass(Segment, null, [{
+           key: "compare",

 
 

-           var sequences = osmJoinWays(ways, graph);
-           var joined = sequences[0]; // We might need to reverse some of these ways before joining them.  #4688
-           // `joined.actions` property will contain any actions we need to apply.
+           /* This compare() function is for ordering segments in the sweep
+            * line tree, and does so according to the following criteria:
+            *
+            * Consider the vertical line that lies an infinestimal step to the
+            * right of the right-more of the two left endpoints of the input
+            * segments. Imagine slowly moving a point up from negative infinity
+            * in the increasing y direction. Which of the two segments will that
+            * point intersect first? That segment comes 'before' the other one.
+            *
+            * If neither segment would be intersected by such a line, (if one
+            * or more of the segments are vertical) then the line to be considered
+            * is directly on the right-more of the two left inputs.
+            */
+           value: function compare(a, b) {
+             var alx = a.leftSE.point.x;
+             var blx = b.leftSE.point.x;
+             var arx = a.rightSE.point.x;
+             var brx = b.rightSE.point.x; // check if they're even in the same vertical plane

 
 

-           graph = sequences.actions.reduce(function (g, action) {
-             return action(g);
-           }, graph);
-           var survivor = graph.entity(survivorID);
-           survivor = survivor.update({
-             nodes: joined.nodes.map(function (n) {
-               return n.id;
-             })
-           });
-           graph = graph.replace(survivor);
-           joined.forEach(function (way) {
-             if (way.id === survivorID) return;
-             graph.parentRelations(way).forEach(function (parent) {
-               graph = graph.replace(parent.replaceMember(way, survivor));
-             });
-             survivor = survivor.mergeTags(way.tags);
-             graph = graph.replace(survivor);
-             graph = actionDeleteWay(way.id)(graph);
-           }); // Finds if the join created a single-member multipolygon,
-           // and if so turns it into a basic area instead
+             if (brx < alx) return 1;
+             if (arx < blx) return -1;
+             var aly = a.leftSE.point.y;
+             var bly = b.leftSE.point.y;
+             var ary = a.rightSE.point.y;
+             var bry = b.rightSE.point.y; // is left endpoint of segment B the right-more?

 
 

-           function checkForSimpleMultipolygon() {
-             if (!survivor.isClosed()) return;
-             var multipolygons = graph.parentMultipolygons(survivor).filter(function (multipolygon) {
-               // find multipolygons where the survivor is the only member
-               return multipolygon.members.length === 1;
-             }); // skip if this is the single member of multiple multipolygons
+             if (alx < blx) {
+               // are the two segments in the same horizontal plane?
+               if (bly < aly && bly < ary) return 1;
+               if (bly > aly && bly > ary) return -1; // is the B left endpoint colinear to segment A?

 
 

-             if (multipolygons.length !== 1) return;
-             var multipolygon = multipolygons[0];
+               var aCmpBLeft = a.comparePoint(b.leftSE.point);
+               if (aCmpBLeft < 0) return 1;
+               if (aCmpBLeft > 0) return -1; // is the A right endpoint colinear to segment B ?

 
 

-             for (var key in survivor.tags) {
-               if (multipolygon.tags[key] && // don't collapse if tags cannot be cleanly merged
-               multipolygon.tags[key] !== survivor.tags[key]) return;
-             }
+               var bCmpARight = b.comparePoint(a.rightSE.point);
+               if (bCmpARight !== 0) return bCmpARight; // colinear segments, consider the one with left-more
+               // left endpoint to be first (arbitrary?)

 
 

-             survivor = survivor.mergeTags(multipolygon.tags);
-             graph = graph.replace(survivor);
-             graph = actionDeleteRelation(multipolygon.id, true
-             /* allow untagged members */
-             )(graph);
-             var tags = Object.assign({}, survivor.tags);
+               return -1;
+             } // is left endpoint of segment A the right-more?

 
 

-             if (survivor.geometry(graph) !== 'area') {
-               // ensure the feature persists as an area
-               tags.area = 'yes';
-             }

 
 

-             delete tags.type; // remove type=multipolygon
+             if (alx > blx) {
+               if (aly < bly && aly < bry) return -1;
+               if (aly > bly && aly > bry) return 1; // is the A left endpoint colinear to segment B?

 
 

-             survivor = survivor.update({
-               tags: tags
-             });
-             graph = graph.replace(survivor);
-           }
+               var bCmpALeft = b.comparePoint(a.leftSE.point);
+               if (bCmpALeft !== 0) return bCmpALeft; // is the B right endpoint colinear to segment A?

 
 

-           checkForSimpleMultipolygon();
-           return graph;
-         }; // Returns the number of nodes the resultant way is expected to have
+               var aCmpBRight = a.comparePoint(b.rightSE.point);
+               if (aCmpBRight < 0) return 1;
+               if (aCmpBRight > 0) return -1; // colinear segments, consider the one with left-more
+               // left endpoint to be first (arbitrary?)
+
+               return 1;
+             } // if we get here, the two left endpoints are in the same
+             // vertical plane, ie alx === blx
+             // consider the lower left-endpoint to come first

 
 
 
 

-         action.resultingWayNodesLength = function (graph) {
-           return ids.reduce(function (count, id) {
-             return count + graph.entity(id).nodes.length;
-           }, 0) - ids.length - 1;
-         };
+             if (aly < bly) return -1;
+             if (aly > bly) return 1; // left endpoints are identical
+             // check for colinearity by using the left-more right endpoint
+             // is the A right endpoint more left-more?

 
 

-         action.disabled = function (graph) {
-           var geometries = groupEntitiesByGeometry(graph);
+             if (arx < brx) {
+               var _bCmpARight = b.comparePoint(a.rightSE.point);

 
 

-           if (ids.length < 2 || ids.length !== geometries.line.length) {
-             return 'not_eligible';
-           }
+               if (_bCmpARight !== 0) return _bCmpARight;
+             } // is the B right endpoint more left-more?

 
 

-           var joined = osmJoinWays(ids.map(graph.entity, graph), graph);

 
 

-           if (joined.length > 1) {
-             return 'not_adjacent';
-           } // Loop through all combinations of path-pairs
-           // to check potential intersections between all pairs
+             if (arx > brx) {
+               var _aCmpBRight = a.comparePoint(b.rightSE.point);

 
 

+               if (_aCmpBRight < 0) return 1;
+               if (_aCmpBRight > 0) return -1;
+             }

 
 

-           for (var i = 0; i < ids.length - 1; i++) {
-             for (var j = i + 1; j < ids.length; j++) {
-               var path1 = graph.childNodes(graph.entity(ids[i])).map(function (e) {
-                 return e.loc;
-               });
-               var path2 = graph.childNodes(graph.entity(ids[j])).map(function (e) {
-                 return e.loc;
-               });
-               var intersections = geoPathIntersections(path1, path2); // Check if intersections are just nodes lying on top of
-               // each other/the line, as opposed to crossing it
+             if (arx !== brx) {
+               // are these two [almost] vertical segments with opposite orientation?
+               // if so, the one with the lower right endpoint comes first
+               var ay = ary - aly;
+               var ax = arx - alx;
+               var by = bry - bly;
+               var bx = brx - blx;
+               if (ay > ax && by < bx) return 1;
+               if (ay < ax && by > bx) return -1;
+             } // we have colinear segments with matching orientation
+             // consider the one with more left-more right endpoint to be first

 
 

-               var common = utilArrayIntersection(joined[0].nodes.map(function (n) {
-                 return n.loc.toString();
-               }), intersections.map(function (n) {
-                 return n.toString();
-               }));

 
 

-               if (common.length !== intersections.length) {
-                 return 'paths_intersect';
-               }
-             }
-           }
+             if (arx > brx) return 1;
+             if (arx < brx) return -1; // if we get here, two two right endpoints are in the same
+             // vertical plane, ie arx === brx
+             // consider the lower right-endpoint to come first

 
 

-           var nodeIds = joined[0].nodes.map(function (n) {
-             return n.id;
-           }).slice(1, -1);
-           var relation;
-           var tags = {};
-           var conflicting = false;
-           joined[0].forEach(function (way) {
-             var parents = graph.parentRelations(way);
-             parents.forEach(function (parent) {
-               if (parent.isRestriction() && parent.members.some(function (m) {
-                 return nodeIds.indexOf(m.id) >= 0;
-               })) {
-                 relation = parent;
-               }
-             });
+             if (ary < bry) return -1;
+             if (ary > bry) return 1; // right endpoints identical as well, so the segments are idential
+             // fall back on creation order as consistent tie-breaker

 
 

-             for (var k in way.tags) {
-               if (!(k in tags)) {
-                 tags[k] = way.tags[k];
-               } else if (tags[k] && osmIsInterestingTag(k) && tags[k] !== way.tags[k]) {
-                 conflicting = true;
-               }
-             }
-           });
+             if (a.id < b.id) return -1;
+             if (a.id > b.id) return 1; // identical segment, ie a === b

 
 

-           if (relation) {
-             return 'restriction';
+             return 0;

            }
            }

+           /* Warning: a reference to ringWindings input will be stored,
+            *  and possibly will be later modified */

 
 

-           if (conflicting) {
-             return 'conflicting_tags';
-           }
-         };
+         }]);

 
 

-         return action;
-       }
+         function Segment(leftSE, rightSE, rings, windings) {
+           _classCallCheck(this, Segment);

 
 

-       function actionMerge(ids) {
-         function groupEntitiesByGeometry(graph) {
-           var entities = ids.map(function (id) {
-             return graph.entity(id);
-           });
-           return Object.assign({
-             point: [],
-             area: [],
-             line: [],
-             relation: []
-           }, utilArrayGroupBy(entities, function (entity) {
-             return entity.geometry(graph);
-           }));
+           this.id = ++segmentId;
+           this.leftSE = leftSE;
+           leftSE.segment = this;
+           leftSE.otherSE = rightSE;
+           this.rightSE = rightSE;
+           rightSE.segment = this;
+           rightSE.otherSE = leftSE;
+           this.rings = rings;
+           this.windings = windings; // left unset for performance, set later in algorithm
+           // this.ringOut, this.consumedBy, this.prev

          }
 
          }
 

-         var action = function action(graph) {
-           var geometries = groupEntitiesByGeometry(graph);
-           var target = geometries.area[0] || geometries.line[0];
-           var points = geometries.point;
-           points.forEach(function (point) {
-             target = target.mergeTags(point.tags);
-             graph = graph.replace(target);
-             graph.parentRelations(point).forEach(function (parent) {
-               graph = graph.replace(parent.replaceMember(point, target));
-             });
-             var nodes = utilArrayUniq(graph.childNodes(target));
-             var removeNode = point;
-
-             for (var i = 0; i < nodes.length; i++) {
-               var node = nodes[i];
+         _createClass(Segment, [{
+           key: "replaceRightSE",

 
 

-               if (graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags()) {
-                 continue;
-               } // Found an uninteresting child node on the target way.
-               // Move orig point into its place to preserve point's history. #3683
+           /* When a segment is split, the rightSE is replaced with a new sweep event */
+           value: function replaceRightSE(newRightSE) {
+             this.rightSE = newRightSE;
+             this.rightSE.segment = this;
+             this.rightSE.otherSE = this.leftSE;
+             this.leftSE.otherSE = this.rightSE;
+           }
+         }, {
+           key: "bbox",
+           value: function bbox() {
+             var y1 = this.leftSE.point.y;
+             var y2 = this.rightSE.point.y;
+             return {
+               ll: {
+                 x: this.leftSE.point.x,
+                 y: y1 < y2 ? y1 : y2
+               },
+               ur: {
+                 x: this.rightSE.point.x,
+                 y: y1 > y2 ? y1 : y2
+               }
+             };
+           }
+           /* A vector from the left point to the right */

 
 

+         }, {
+           key: "vector",
+           value: function vector() {
+             return {
+               x: this.rightSE.point.x - this.leftSE.point.x,
+               y: this.rightSE.point.y - this.leftSE.point.y
+             };
+           }
+         }, {
+           key: "isAnEndpoint",
+           value: function isAnEndpoint(pt) {
+             return pt.x === this.leftSE.point.x && pt.y === this.leftSE.point.y || pt.x === this.rightSE.point.x && pt.y === this.rightSE.point.y;
+           }
+           /* Compare this segment with a point.
+            *
+            * A point P is considered to be colinear to a segment if there
+            * exists a distance D such that if we travel along the segment
+            * from one * endpoint towards the other a distance D, we find
+            * ourselves at point P.
+            *
+            * Return value indicates:
+            *
+            *   1: point lies above the segment (to the left of vertical)
+            *   0: point is colinear to segment
+            *  -1: point lies below the segment (to the right of vertical)
+            */

 
 

-               graph = graph.replace(point.update({
-                 tags: {},
-                 loc: node.loc
-               }));
-               target = target.replaceNode(node.id, point.id);
-               graph = graph.replace(target);
-               removeNode = node;
-               break;
-             }
+         }, {
+           key: "comparePoint",
+           value: function comparePoint(point) {
+             if (this.isAnEndpoint(point)) return 0;
+             var lPt = this.leftSE.point;
+             var rPt = this.rightSE.point;
+             var v = this.vector(); // Exactly vertical segments.

 
 

-             graph = graph.remove(removeNode);
-           });
+             if (lPt.x === rPt.x) {
+               if (point.x === lPt.x) return 0;
+               return point.x < lPt.x ? 1 : -1;
+             } // Nearly vertical segments with an intersection.
+             // Check to see where a point on the line with matching Y coordinate is.

 
 

-           if (target.tags.area === 'yes') {
-             var tags = Object.assign({}, target.tags); // shallow copy

 
 

-             delete tags.area;
+             var yDist = (point.y - lPt.y) / v.y;
+             var xFromYDist = lPt.x + yDist * v.x;
+             if (point.x === xFromYDist) return 0; // General case.
+             // Check to see where a point on the line with matching X coordinate is.

 
 

-             if (osmTagSuggestingArea(tags)) {
-               // remove the `area` tag if area geometry is now implied - #3851
-               target = target.update({
-                 tags: tags
-               });
-               graph = graph.replace(target);
-             }
+             var xDist = (point.x - lPt.x) / v.x;
+             var yFromXDist = lPt.y + xDist * v.y;
+             if (point.y === yFromXDist) return 0;
+             return point.y < yFromXDist ? -1 : 1;

            }
            }

+           /**
+            * Given another segment, returns the first non-trivial intersection
+            * between the two segments (in terms of sweep line ordering), if it exists.
+            *
+            * A 'non-trivial' intersection is one that will cause one or both of the
+            * segments to be split(). As such, 'trivial' vs. 'non-trivial' intersection:
+            *
+            *   * endpoint of segA with endpoint of segB --> trivial
+            *   * endpoint of segA with point along segB --> non-trivial
+            *   * endpoint of segB with point along segA --> non-trivial
+            *   * point along segA with point along segB --> non-trivial
+            *
+            * If no non-trivial intersection exists, return null
+            * Else, return null.
+            */

 
 

-           return graph;
-         };
+         }, {
+           key: "getIntersection",
+           value: function getIntersection(other) {
+             // If bboxes don't overlap, there can't be any intersections
+             var tBbox = this.bbox();
+             var oBbox = other.bbox();
+             var bboxOverlap = getBboxOverlap(tBbox, oBbox);
+             if (bboxOverlap === null) return null; // We first check to see if the endpoints can be considered intersections.
+             // This will 'snap' intersections to endpoints if possible, and will
+             // handle cases of colinearity.

 
 

-         action.disabled = function (graph) {
-           var geometries = groupEntitiesByGeometry(graph);
+             var tlp = this.leftSE.point;
+             var trp = this.rightSE.point;
+             var olp = other.leftSE.point;
+             var orp = other.rightSE.point; // does each endpoint touch the other segment?
+             // note that we restrict the 'touching' definition to only allow segments
+             // to touch endpoints that lie forward from where we are in the sweep line pass

 
 

-           if (geometries.point.length === 0 || geometries.area.length + geometries.line.length !== 1 || geometries.relation.length !== 0) {
-             return 'not_eligible';
-           }
-         };
+             var touchesOtherLSE = isInBbox(tBbox, olp) && this.comparePoint(olp) === 0;
+             var touchesThisLSE = isInBbox(oBbox, tlp) && other.comparePoint(tlp) === 0;
+             var touchesOtherRSE = isInBbox(tBbox, orp) && this.comparePoint(orp) === 0;
+             var touchesThisRSE = isInBbox(oBbox, trp) && other.comparePoint(trp) === 0; // do left endpoints match?

 
 

-         return action;
-       }
+             if (touchesThisLSE && touchesOtherLSE) {
+               // these two cases are for colinear segments with matching left
+               // endpoints, and one segment being longer than the other
+               if (touchesThisRSE && !touchesOtherRSE) return trp;
+               if (!touchesThisRSE && touchesOtherRSE) return orp; // either the two segments match exactly (two trival intersections)
+               // or just on their left endpoint (one trivial intersection

 
 

-       //
-       // 1. move all the nodes to a common location
-       // 2. `actionConnect` them
+               return null;
+             } // does this left endpoint matches (other doesn't)

 
 

-       function actionMergeNodes(nodeIDs, loc) {
-         // If there is a single "interesting" node, use that as the location.
-         // Otherwise return the average location of all the nodes.
-         function chooseLoc(graph) {
-           if (!nodeIDs.length) return null;
-           var sum = [0, 0];
-           var interestingCount = 0;
-           var interestingLoc;

 
 

-           for (var i = 0; i < nodeIDs.length; i++) {
-             var node = graph.entity(nodeIDs[i]);
+             if (touchesThisLSE) {
+               // check for segments that just intersect on opposing endpoints
+               if (touchesOtherRSE) {
+                 if (tlp.x === orp.x && tlp.y === orp.y) return null;
+               } // t-intersection on left endpoint

 
 

-             if (node.hasInterestingTags()) {
-               interestingLoc = ++interestingCount === 1 ? node.loc : null;
-             }

 
 

-             sum = geoVecAdd(sum, node.loc);
-           }
+               return tlp;
+             } // does other left endpoint matches (this doesn't)

 
 

-           return interestingLoc || geoVecScale(sum, 1 / nodeIDs.length);
-         }

 
 

-         var action = function action(graph) {
-           if (nodeIDs.length < 2) return graph;
-           var toLoc = loc;
+             if (touchesOtherLSE) {
+               // check for segments that just intersect on opposing endpoints
+               if (touchesThisRSE) {
+                 if (trp.x === olp.x && trp.y === olp.y) return null;
+               } // t-intersection on left endpoint

 
 

-           if (!toLoc) {
-             toLoc = chooseLoc(graph);
-           }

 
 

-           for (var i = 0; i < nodeIDs.length; i++) {
-             var node = graph.entity(nodeIDs[i]);
+               return olp;
+             } // trivial intersection on right endpoints

 
 

-             if (node.loc !== toLoc) {
-               graph = graph.replace(node.move(toLoc));
-             }
-           }

 
 

-           return actionConnect(nodeIDs)(graph);
-         };
+             if (touchesThisRSE && touchesOtherRSE) return null; // t-intersections on just one right endpoint

 
 

-         action.disabled = function (graph) {
-           if (nodeIDs.length < 2) return 'not_eligible';
+             if (touchesThisRSE) return trp;
+             if (touchesOtherRSE) return orp; // None of our endpoints intersect. Look for a general intersection between
+             // infinite lines laid over the segments

 
 

-           for (var i = 0; i < nodeIDs.length; i++) {
-             var entity = graph.entity(nodeIDs[i]);
-             if (entity.type !== 'node') return 'not_eligible';
-           }
+             var pt = intersection(tlp, this.vector(), olp, other.vector()); // are the segments parrallel? Note that if they were colinear with overlap,
+             // they would have an endpoint intersection and that case was already handled above

 
 

-           return actionConnect(nodeIDs).disabled(graph);
-         };
+             if (pt === null) return null; // is the intersection found between the lines not on the segments?

 
 

-         return action;
-       }
+             if (!isInBbox(bboxOverlap, pt)) return null; // round the the computed point if needed

 
 

-       function osmChangeset() {
-         if (!(this instanceof osmChangeset)) {
-           return new osmChangeset().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
-       }
-       osmEntity.changeset = osmChangeset;
-       osmChangeset.prototype = Object.create(osmEntity.prototype);
-       Object.assign(osmChangeset.prototype, {
-         type: 'changeset',
-         extent: function extent() {
-           return new geoExtent();
-         },
-         geometry: function geometry() {
-           return 'changeset';
-         },
-         asJXON: function asJXON() {
-           return {
-             osm: {
-               changeset: {
-                 tag: Object.keys(this.tags).map(function (k) {
-                   return {
-                     '@k': k,
-                     '@v': this.tags[k]
-                   };
-                 }, this),
-                 '@version': 0.6,
-                 '@generator': 'iD'
-               }
-             }
-           };
-         },
-         // Generate [osmChange](http://wiki.openstreetmap.org/wiki/OsmChange)
-         // XML. Returns a string.
-         osmChangeJXON: function osmChangeJXON(changes) {
-           var changeset_id = this.id;
+             return rounder.round(pt.x, pt.y);
+           }
+           /**
+            * Split the given segment into multiple segments on the given points.
+            *  * Each existing segment will retain its leftSE and a new rightSE will be
+            *    generated for it.
+            *  * A new segment will be generated which will adopt the original segment's
+            *    rightSE, and a new leftSE will be generated for it.
+            *  * If there are more than two points given to split on, new segments
+            *    in the middle will be generated with new leftSE and rightSE's.
+            *  * An array of the newly generated SweepEvents will be returned.
+            *
+            * Warning: input array of points is modified
+            */

 
 

-           function nest(x, order) {
-             var groups = {};
+         }, {
+           key: "split",
+           value: function split(point) {
+             var newEvents = [];
+             var alreadyLinked = point.events !== undefined;
+             var newLeftSE = new SweepEvent(point, true);
+             var newRightSE = new SweepEvent(point, false);
+             var oldRightSE = this.rightSE;
+             this.replaceRightSE(newRightSE);
+             newEvents.push(newRightSE);
+             newEvents.push(newLeftSE);
+             var newSeg = new Segment(newLeftSE, oldRightSE, this.rings.slice(), this.windings.slice()); // when splitting a nearly vertical downward-facing segment,
+             // sometimes one of the resulting new segments is vertical, in which
+             // case its left and right events may need to be swapped

 
 

-             for (var i = 0; i < x.length; i++) {
-               var tagName = Object.keys(x[i])[0];
-               if (!groups[tagName]) groups[tagName] = [];
-               groups[tagName].push(x[i][tagName]);
+             if (SweepEvent.comparePoints(newSeg.leftSE.point, newSeg.rightSE.point) > 0) {
+               newSeg.swapEvents();

              }
 
              }
 

-             var ordered = {};
-             order.forEach(function (o) {
-               if (groups[o]) ordered[o] = groups[o];
-             });
-             return ordered;
-           } // sort relations in a changeset by dependencies
-
-
-           function sort(changes) {
-             // find a referenced relation in the current changeset
-             function resolve(item) {
-               return relations.find(function (relation) {
-                 return item.keyAttributes.type === 'relation' && item.keyAttributes.ref === relation['@id'];
-               });
-             } // a new item is an item that has not been already processed
+             if (SweepEvent.comparePoints(this.leftSE.point, this.rightSE.point) > 0) {
+               this.swapEvents();
+             } // in the point we just used to create new sweep events with was already
+             // linked to other events, we need to check if either of the affected
+             // segments should be consumed

 
 
 
 

-             function isNew(item) {
-               return !sorted[item['@id']] && !processing.find(function (proc) {
-                 return proc['@id'] === item['@id'];
-               });
+             if (alreadyLinked) {
+               newLeftSE.checkForConsuming();
+               newRightSE.checkForConsuming();

              }
 
              }
 

-             var processing = [];
-             var sorted = {};
-             var relations = changes.relation;
-             if (!relations) return changes;
+             return newEvents;
+           }
+           /* Swap which event is left and right */

 
 

-             for (var i = 0; i < relations.length; i++) {
-               var relation = relations[i]; // skip relation if already sorted
+         }, {
+           key: "swapEvents",
+           value: function swapEvents() {
+             var tmpEvt = this.rightSE;
+             this.rightSE = this.leftSE;
+             this.leftSE = tmpEvt;
+             this.leftSE.isLeft = true;
+             this.rightSE.isLeft = false;

 
 

-               if (!sorted[relation['@id']]) {
-                 processing.push(relation);
-               }
+             for (var i = 0, iMax = this.windings.length; i < iMax; i++) {
+               this.windings[i] *= -1;
+             }
+           }
+           /* Consume another segment. We take their rings under our wing
+            * and mark them as consumed. Use for perfectly overlapping segments */

 
 

-               while (processing.length > 0) {
-                 var next = processing[0],
-                     deps = next.member.map(resolve).filter(Boolean).filter(isNew);
+         }, {
+           key: "consume",
+           value: function consume(other) {
+             var consumer = this;
+             var consumee = other;

 
 

-                 if (deps.length === 0) {
-                   sorted[next['@id']] = next;
-                   processing.shift();
-                 } else {
-                   processing = deps.concat(processing);
-                 }
-               }
+             while (consumer.consumedBy) {
+               consumer = consumer.consumedBy;

              }
 
              }
 

-             changes.relation = Object.values(sorted);
-             return changes;
-           }
+             while (consumee.consumedBy) {
+               consumee = consumee.consumedBy;
+             }
+
+             var cmp = Segment.compare(consumer, consumee);
+             if (cmp === 0) return; // already consumed
+             // the winner of the consumption is the earlier segment
+             // according to sweep line ordering
+
+             if (cmp > 0) {
+               var tmp = consumer;
+               consumer = consumee;
+               consumee = tmp;
+             } // make sure a segment doesn't consume it's prev

 
 

-           function rep(entity) {
-             return entity.asJXON(changeset_id);
-           }

 
 

-           return {
-             osmChange: {
-               '@version': 0.6,
-               '@generator': 'iD',
-               'create': sort(nest(changes.created.map(rep), ['node', 'way', 'relation'])),
-               'modify': nest(changes.modified.map(rep), ['node', 'way', 'relation']),
-               'delete': Object.assign(nest(changes.deleted.map(rep), ['relation', 'way', 'node']), {
-                 '@if-unused': true
-               })
+             if (consumer.prev === consumee) {
+               var _tmp = consumer;
+               consumer = consumee;
+               consumee = _tmp;

              }
              }

-           };
-         },
-         asGeoJSON: function asGeoJSON() {
-           return {};
-         }
-       });

 
 

-       function osmNote() {
-         if (!(this instanceof osmNote)) {
-           return new osmNote().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
-       }
+             for (var i = 0, iMax = consumee.rings.length; i < iMax; i++) {
+               var ring = consumee.rings[i];
+               var winding = consumee.windings[i];
+               var index = consumer.rings.indexOf(ring);

 
 

-       osmNote.id = function () {
-         return osmNote.id.next--;
-       };
+               if (index === -1) {
+                 consumer.rings.push(ring);
+                 consumer.windings.push(winding);
+               } else consumer.windings[index] += winding;
+             }

 
 

-       osmNote.id.next = -1;
-       Object.assign(osmNote.prototype, {
-         type: 'note',
-         initialize: function initialize(sources) {
-           for (var i = 0; i < sources.length; ++i) {
-             var source = sources[i];
+             consumee.rings = null;
+             consumee.windings = null;
+             consumee.consumedBy = consumer; // mark sweep events consumed as to maintain ordering in sweep event queue

 
 

-             for (var prop in source) {
-               if (Object.prototype.hasOwnProperty.call(source, prop)) {
-                 if (source[prop] === undefined) {
-                   delete this[prop];
-                 } else {
-                   this[prop] = source[prop];
-                 }
-               }
-             }
+             consumee.leftSE.consumedBy = consumer.leftSE;
+             consumee.rightSE.consumedBy = consumer.rightSE;

            }
            }

+           /* The first segment previous segment chain that is in the result */

 
 

-           if (!this.id) {
-             this.id = osmNote.id().toString();
+         }, {
+           key: "prevInResult",
+           value: function prevInResult() {
+             if (this._prevInResult !== undefined) return this._prevInResult;
+             if (!this.prev) this._prevInResult = null;else if (this.prev.isInResult()) this._prevInResult = this.prev;else this._prevInResult = this.prev.prevInResult();
+             return this._prevInResult;
+           }
+         }, {
+           key: "beforeState",
+           value: function beforeState() {
+             if (this._beforeState !== undefined) return this._beforeState;
+             if (!this.prev) this._beforeState = {
+               rings: [],
+               windings: [],
+               multiPolys: []
+             };else {
+               var seg = this.prev.consumedBy || this.prev;
+               this._beforeState = seg.afterState();
+             }
+             return this._beforeState;

            }
            }

+         }, {
+           key: "afterState",
+           value: function afterState() {
+             if (this._afterState !== undefined) return this._afterState;
+             var beforeState = this.beforeState();
+             this._afterState = {
+               rings: beforeState.rings.slice(0),
+               windings: beforeState.windings.slice(0),
+               multiPolys: []
+             };
+             var ringsAfter = this._afterState.rings;
+             var windingsAfter = this._afterState.windings;
+             var mpsAfter = this._afterState.multiPolys; // calculate ringsAfter, windingsAfter

 
 

-           return this;
-         },
-         extent: function extent() {
-           return new geoExtent(this.loc);
-         },
-         update: function update(attrs) {
-           return osmNote(this, attrs); // {v: 1 + (this.v || 0)}
-         },
-         isNew: function isNew() {
-           return this.id < 0;
-         },
-         move: function move(loc) {
-           return this.update({
-             loc: loc
-           });
-         }
-       });
+             for (var i = 0, iMax = this.rings.length; i < iMax; i++) {
+               var ring = this.rings[i];
+               var winding = this.windings[i];
+               var index = ringsAfter.indexOf(ring);

 
 

-       function osmRelation() {
-         if (!(this instanceof osmRelation)) {
-           return new osmRelation().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
-       }
-       osmEntity.relation = osmRelation;
-       osmRelation.prototype = Object.create(osmEntity.prototype);
+               if (index === -1) {
+                 ringsAfter.push(ring);
+                 windingsAfter.push(winding);
+               } else windingsAfter[index] += winding;
+             } // calcualte polysAfter

 
 

-       osmRelation.creationOrder = function (a, b) {
-         var aId = parseInt(osmEntity.id.toOSM(a.id), 10);
-         var bId = parseInt(osmEntity.id.toOSM(b.id), 10);
-         if (aId < 0 || bId < 0) return aId - bId;
-         return bId - aId;
-       };

 
 

-       Object.assign(osmRelation.prototype, {
-         type: 'relation',
-         members: [],
-         copy: function copy(resolver, copies) {
-           if (copies[this.id]) return copies[this.id];
-           var copy = osmEntity.prototype.copy.call(this, resolver, copies);
-           var members = this.members.map(function (member) {
-             return Object.assign({}, member, {
-               id: resolver.entity(member.id).copy(resolver, copies).id
-             });
-           });
-           copy = copy.update({
-             members: members
-           });
-           copies[this.id] = copy;
-           return copy;
-         },
-         extent: function extent(resolver, memo) {
-           return resolver["transient"](this, 'extent', function () {
-             if (memo && memo[this.id]) return geoExtent();
-             memo = memo || {};
-             memo[this.id] = true;
-             var extent = geoExtent();
+             var polysAfter = [];
+             var polysExclude = [];

 
 

-             for (var i = 0; i < this.members.length; i++) {
-               var member = resolver.hasEntity(this.members[i].id);
+             for (var _i = 0, _iMax = ringsAfter.length; _i < _iMax; _i++) {
+               if (windingsAfter[_i] === 0) continue; // non-zero rule

 
 

-               if (member) {
-                 extent._extend(member.extent(resolver, memo));
-               }
-             }
+               var _ring = ringsAfter[_i];
+               var poly = _ring.poly;
+               if (polysExclude.indexOf(poly) !== -1) continue;
+               if (_ring.isExterior) polysAfter.push(poly);else {
+                 if (polysExclude.indexOf(poly) === -1) polysExclude.push(poly);

 
 

-             return extent;
-           });
-         },
-         geometry: function geometry(graph) {
-           return graph["transient"](this, 'geometry', function () {
-             return this.isMultipolygon() ? 'area' : 'relation';
-           });
-         },
-         isDegenerate: function isDegenerate() {
-           return this.members.length === 0;
-         },
-         // Return an array of members, each extended with an 'index' property whose value
-         // is the member index.
-         indexedMembers: function indexedMembers() {
-           var result = new Array(this.members.length);
+                 var _index = polysAfter.indexOf(_ring.poly);

 
 

-           for (var i = 0; i < this.members.length; i++) {
-             result[i] = Object.assign({}, this.members[i], {
-               index: i
-             });
-           }
+                 if (_index !== -1) polysAfter.splice(_index, 1);
+               }
+             } // calculate multiPolysAfter

 
 

-           return result;
-         },
-         // Return the first member with the given role. A copy of the member object
-         // is returned, extended with an 'index' property whose value is the member index.
-         memberByRole: function memberByRole(role) {
-           for (var i = 0; i < this.members.length; i++) {
-             if (this.members[i].role === role) {
-               return Object.assign({}, this.members[i], {
-                 index: i
-               });
-             }
-           }
-         },
-         // Same as memberByRole, but returns all members with the given role
-         membersByRole: function membersByRole(role) {
-           var result = [];

 
 

-           for (var i = 0; i < this.members.length; i++) {
-             if (this.members[i].role === role) {
-               result.push(Object.assign({}, this.members[i], {
-                 index: i
-               }));
+             for (var _i2 = 0, _iMax2 = polysAfter.length; _i2 < _iMax2; _i2++) {
+               var mp = polysAfter[_i2].multiPoly;
+               if (mpsAfter.indexOf(mp) === -1) mpsAfter.push(mp);

              }
              }

-           }

 
 

-           return result;
-         },
-         // Return the first member with the given id. A copy of the member object
-         // is returned, extended with an 'index' property whose value is the member index.
-         memberById: function memberById(id) {
-           for (var i = 0; i < this.members.length; i++) {
-             if (this.members[i].id === id) {
-               return Object.assign({}, this.members[i], {
-                 index: i
-               });
-             }
-           }
-         },
-         // Return the first member with the given id and role. A copy of the member object
-         // is returned, extended with an 'index' property whose value is the member index.
-         memberByIdAndRole: function memberByIdAndRole(id, role) {
-           for (var i = 0; i < this.members.length; i++) {
-             if (this.members[i].id === id && this.members[i].role === role) {
-               return Object.assign({}, this.members[i], {
-                 index: i
-               });
-             }
+             return this._afterState;

            }
            }

-         },
-         addMember: function addMember(member, index) {
-           var members = this.members.slice();
-           members.splice(index === undefined ? members.length : index, 0, member);
-           return this.update({
-             members: members
-           });
-         },
-         updateMember: function updateMember(member, index) {
-           var members = this.members.slice();
-           members.splice(index, 1, Object.assign({}, members[index], member));
-           return this.update({
-             members: members
-           });
-         },
-         removeMember: function removeMember(index) {
-           var members = this.members.slice();
-           members.splice(index, 1);
-           return this.update({
-             members: members
-           });
-         },
-         removeMembersWithID: function removeMembersWithID(id) {
-           var members = this.members.filter(function (m) {
-             return m.id !== id;
-           });
-           return this.update({
-             members: members
-           });
-         },
-         moveMember: function moveMember(fromIndex, toIndex) {
-           var members = this.members.slice();
-           members.splice(toIndex, 0, members.splice(fromIndex, 1)[0]);
-           return this.update({
-             members: members
-           });
-         },
-         // Wherever a member appears with id `needle.id`, replace it with a member
-         // with id `replacement.id`, type `replacement.type`, and the original role,
-         // By default, adding a duplicate member (by id and role) is prevented.
-         // Return an updated relation.
-         replaceMember: function replaceMember(needle, replacement, keepDuplicates) {
-           if (!this.memberById(needle.id)) return this;
-           var members = [];
+           /* Is this segment part of the final result? */

 
 

-           for (var i = 0; i < this.members.length; i++) {
-             var member = this.members[i];
+         }, {
+           key: "isInResult",
+           value: function isInResult() {
+             // if we've been consumed, we're not in the result
+             if (this.consumedBy) return false;
+             if (this._isInResult !== undefined) return this._isInResult;
+             var mpsBefore = this.beforeState().multiPolys;
+             var mpsAfter = this.afterState().multiPolys;

 
 

-             if (member.id !== needle.id) {
-               members.push(member);
-             } else if (keepDuplicates || !this.memberByIdAndRole(replacement.id, member.role)) {
-               members.push({
-                 id: replacement.id,
-                 type: replacement.type,
-                 role: member.role
-               });
-             }
-           }
+             switch (operation.type) {
+               case 'union':
+                 {
+                   // UNION - included iff:
+                   //  * On one side of us there is 0 poly interiors AND
+                   //  * On the other side there is 1 or more.
+                   var noBefores = mpsBefore.length === 0;
+                   var noAfters = mpsAfter.length === 0;
+                   this._isInResult = noBefores !== noAfters;
+                   break;
+                 }

 
 

-           return this.update({
-             members: members
-           });
-         },
-         asJXON: function asJXON(changeset_id) {
-           var r = {
-             relation: {
-               '@id': this.osmId(),
-               '@version': this.version || 0,
-               member: this.members.map(function (member) {
-                 return {
-                   keyAttributes: {
-                     type: member.type,
-                     role: member.role,
-                     ref: osmEntity.id.toOSM(member.id)
-                   }
-                 };
-               }, this),
-               tag: Object.keys(this.tags).map(function (k) {
-                 return {
-                   keyAttributes: {
-                     k: k,
-                     v: this.tags[k]
+               case 'intersection':
+                 {
+                   // INTERSECTION - included iff:
+                   //  * on one side of us all multipolys are rep. with poly interiors AND
+                   //  * on the other side of us, not all multipolys are repsented
+                   //    with poly interiors
+                   var least;
+                   var most;
+
+                   if (mpsBefore.length < mpsAfter.length) {
+                     least = mpsBefore.length;
+                     most = mpsAfter.length;
+                   } else {
+                     least = mpsAfter.length;
+                     most = mpsBefore.length;

                    }
                    }

-                 };
-               }, this)
-             }
-           };

 
 

-           if (changeset_id) {
-             r.relation['@changeset'] = changeset_id;
-           }
+                   this._isInResult = most === operation.numMultiPolys && least < most;
+                   break;
+                 }

 
 

-           return r;
-         },
-         asGeoJSON: function asGeoJSON(resolver) {
-           return resolver["transient"](this, 'GeoJSON', function () {
-             if (this.isMultipolygon()) {
-               return {
-                 type: 'MultiPolygon',
-                 coordinates: this.multipolygon(resolver)
-               };
-             } else {
-               return {
-                 type: 'FeatureCollection',
-                 properties: this.tags,
-                 features: this.members.map(function (member) {
-                   return Object.assign({
-                     role: member.role
-                   }, resolver.entity(member.id).asGeoJSON(resolver));
-                 })
-               };
-             }
-           });
-         },
-         area: function area(resolver) {
-           return resolver["transient"](this, 'area', function () {
-             return d3_geoArea(this.asGeoJSON(resolver));
-           });
-         },
-         isMultipolygon: function isMultipolygon() {
-           return this.tags.type === 'multipolygon';
-         },
-         isComplete: function isComplete(resolver) {
-           for (var i = 0; i < this.members.length; i++) {
-             if (!resolver.hasEntity(this.members[i].id)) {
-               return false;
+               case 'xor':
+                 {
+                   // XOR - included iff:
+                   //  * the difference between the number of multipolys represented
+                   //    with poly interiors on our two sides is an odd number
+                   var diff = Math.abs(mpsBefore.length - mpsAfter.length);
+                   this._isInResult = diff % 2 === 1;
+                   break;
+                 }
+
+               case 'difference':
+                 {
+                   // DIFFERENCE included iff:
+                   //  * on exactly one side, we have just the subject
+                   var isJustSubject = function isJustSubject(mps) {
+                     return mps.length === 1 && mps[0].isSubject;
+                   };
+
+                   this._isInResult = isJustSubject(mpsBefore) !== isJustSubject(mpsAfter);
+                   break;
+                 }
+
+               default:
+                 throw new Error("Unrecognized operation type found ".concat(operation.type));

              }
              }

+
+             return this._isInResult;

            }
            }

+         }], [{
+           key: "fromRing",
+           value: function fromRing(pt1, pt2, ring) {
+             var leftPt, rightPt, winding; // ordering the two points according to sweep line ordering

 
 

-           return true;
-         },
-         hasFromViaTo: function hasFromViaTo() {
-           return this.members.some(function (m) {
-             return m.role === 'from';
-           }) && this.members.some(function (m) {
-             return m.role === 'via';
-           }) && this.members.some(function (m) {
-             return m.role === 'to';
-           });
-         },
-         isRestriction: function isRestriction() {
-           return !!(this.tags.type && this.tags.type.match(/^restriction:?/));
-         },
-         isValidRestriction: function isValidRestriction() {
-           if (!this.isRestriction()) return false;
-           var froms = this.members.filter(function (m) {
-             return m.role === 'from';
-           });
-           var vias = this.members.filter(function (m) {
-             return m.role === 'via';
-           });
-           var tos = this.members.filter(function (m) {
-             return m.role === 'to';
-           });
-           if (froms.length !== 1 && this.tags.restriction !== 'no_entry') return false;
-           if (froms.some(function (m) {
-             return m.type !== 'way';
-           })) return false;
-           if (tos.length !== 1 && this.tags.restriction !== 'no_exit') return false;
-           if (tos.some(function (m) {
-             return m.type !== 'way';
-           })) return false;
-           if (vias.length === 0) return false;
-           if (vias.length > 1 && vias.some(function (m) {
-             return m.type !== 'way';
-           })) return false;
-           return true;
-         },
-         // Returns an array [A0, ... An], each Ai being an array of node arrays [Nds0, ... Ndsm],
-         // where Nds0 is an outer ring and subsequent Ndsi's (if any i > 0) being inner rings.
-         //
-         // This corresponds to the structure needed for rendering a multipolygon path using a
-         // `evenodd` fill rule, as well as the structure of a GeoJSON MultiPolygon geometry.
-         //
-         // In the case of invalid geometries, this function will still return a result which
-         // includes the nodes of all way members, but some Nds may be unclosed and some inner
-         // rings not matched with the intended outer ring.
-         //
-         multipolygon: function multipolygon(resolver) {
-           var outers = this.members.filter(function (m) {
-             return 'outer' === (m.role || 'outer');
-           });
-           var inners = this.members.filter(function (m) {
-             return 'inner' === m.role;
-           });
-           outers = osmJoinWays(outers, resolver);
-           inners = osmJoinWays(inners, resolver);
+             var cmpPts = SweepEvent.comparePoints(pt1, pt2);

 
 

-           var sequenceToLineString = function sequenceToLineString(sequence) {
-             if (sequence.nodes.length > 2 && sequence.nodes[0] !== sequence.nodes[sequence.nodes.length - 1]) {
-               // close unclosed parts to ensure correct area rendering - #2945
-               sequence.nodes.push(sequence.nodes[0]);
-             }
+             if (cmpPts < 0) {
+               leftPt = pt1;
+               rightPt = pt2;
+               winding = 1;
+             } else if (cmpPts > 0) {
+               leftPt = pt2;
+               rightPt = pt1;
+               winding = -1;
+             } else throw new Error("Tried to create degenerate segment at [".concat(pt1.x, ", ").concat(pt1.y, "]"));
+
+             var leftSE = new SweepEvent(leftPt, true);
+             var rightSE = new SweepEvent(rightPt, false);
+             return new Segment(leftSE, rightSE, [ring], [winding]);
+           }
+         }]);

 
 

-             return sequence.nodes.map(function (node) {
-               return node.loc;
-             });
-           };
+         return Segment;
+       }();

 
 

-           outers = outers.map(sequenceToLineString);
-           inners = inners.map(sequenceToLineString);
-           var result = outers.map(function (o) {
-             // Heuristic for detecting counterclockwise winding order. Assumes
-             // that OpenStreetMap polygons are not hemisphere-spanning.
-             return [d3_geoArea({
-               type: 'Polygon',
-               coordinates: [o]
-             }) > 2 * Math.PI ? o.reverse() : o];
-           });
+       var RingIn = /*#__PURE__*/function () {
+         function RingIn(geomRing, poly, isExterior) {
+           _classCallCheck(this, RingIn);

 
 

-           function findOuter(inner) {
-             var o, outer;
+           if (!Array.isArray(geomRing) || geomRing.length === 0) {
+             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
+           }

 
 

-             for (o = 0; o < outers.length; o++) {
-               outer = outers[o];
-               if (geoPolygonContainsPolygon(outer, inner)) return o;
+           this.poly = poly;
+           this.isExterior = isExterior;
+           this.segments = [];
+
+           if (typeof geomRing[0][0] !== 'number' || typeof geomRing[0][1] !== 'number') {
+             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
+           }
+
+           var firstPoint = rounder.round(geomRing[0][0], geomRing[0][1]);
+           this.bbox = {
+             ll: {
+               x: firstPoint.x,
+               y: firstPoint.y
+             },
+             ur: {
+               x: firstPoint.x,
+               y: firstPoint.y

              }
              }

+           };
+           var prevPoint = firstPoint;

 
 

-             for (o = 0; o < outers.length; o++) {
-               outer = outers[o];
-               if (geoPolygonIntersectsPolygon(outer, inner, false)) return o;
+           for (var i = 1, iMax = geomRing.length; i < iMax; i++) {
+             if (typeof geomRing[i][0] !== 'number' || typeof geomRing[i][1] !== 'number') {
+               throw new Error('Input geometry is not a valid Polygon or MultiPolygon');

              }
              }

+
+             var point = rounder.round(geomRing[i][0], geomRing[i][1]); // skip repeated points
+
+             if (point.x === prevPoint.x && point.y === prevPoint.y) continue;
+             this.segments.push(Segment.fromRing(prevPoint, point, this));
+             if (point.x < this.bbox.ll.x) this.bbox.ll.x = point.x;
+             if (point.y < this.bbox.ll.y) this.bbox.ll.y = point.y;
+             if (point.x > this.bbox.ur.x) this.bbox.ur.x = point.x;
+             if (point.y > this.bbox.ur.y) this.bbox.ur.y = point.y;
+             prevPoint = point;
+           } // add segment from last to first if last is not the same as first
+
+
+           if (firstPoint.x !== prevPoint.x || firstPoint.y !== prevPoint.y) {
+             this.segments.push(Segment.fromRing(prevPoint, firstPoint, this));

            }
            }

+         }

 
 

-           for (var i = 0; i < inners.length; i++) {
-             var inner = inners[i];
+         _createClass(RingIn, [{
+           key: "getSweepEvents",
+           value: function getSweepEvents() {
+             var sweepEvents = [];

 
 

-             if (d3_geoArea({
-               type: 'Polygon',
-               coordinates: [inner]
-             }) < 2 * Math.PI) {
-               inner = inner.reverse();
+             for (var i = 0, iMax = this.segments.length; i < iMax; i++) {
+               var segment = this.segments[i];
+               sweepEvents.push(segment.leftSE);
+               sweepEvents.push(segment.rightSE);

              }
 
              }
 

-             var o = findOuter(inners[i]);
+             return sweepEvents;
+           }
+         }]);

 
 

-             if (o !== undefined) {
-               result[o].push(inners[i]);
-             } else {
-               result.push([inners[i]]); // Invalid geometry
+         return RingIn;
+       }();
+
+       var PolyIn = /*#__PURE__*/function () {
+         function PolyIn(geomPoly, multiPoly) {
+           _classCallCheck(this, PolyIn);
+
+           if (!Array.isArray(geomPoly)) {
+             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
+           }
+
+           this.exteriorRing = new RingIn(geomPoly[0], this, true); // copy by value
+
+           this.bbox = {
+             ll: {
+               x: this.exteriorRing.bbox.ll.x,
+               y: this.exteriorRing.bbox.ll.y
+             },
+             ur: {
+               x: this.exteriorRing.bbox.ur.x,
+               y: this.exteriorRing.bbox.ur.y

              }
              }

+           };
+           this.interiorRings = [];
+
+           for (var i = 1, iMax = geomPoly.length; i < iMax; i++) {
+             var ring = new RingIn(geomPoly[i], this, false);
+             if (ring.bbox.ll.x < this.bbox.ll.x) this.bbox.ll.x = ring.bbox.ll.x;
+             if (ring.bbox.ll.y < this.bbox.ll.y) this.bbox.ll.y = ring.bbox.ll.y;
+             if (ring.bbox.ur.x > this.bbox.ur.x) this.bbox.ur.x = ring.bbox.ur.x;
+             if (ring.bbox.ur.y > this.bbox.ur.y) this.bbox.ur.y = ring.bbox.ur.y;
+             this.interiorRings.push(ring);

            }
 
            }
 

-           return result;
+           this.multiPoly = multiPoly;

          }
          }

-       });

 
 

-       var QAItem = /*#__PURE__*/function () {
-         function QAItem(loc, service, itemType, id, props) {
-           _classCallCheck(this, QAItem);
+         _createClass(PolyIn, [{
+           key: "getSweepEvents",
+           value: function getSweepEvents() {
+             var sweepEvents = this.exteriorRing.getSweepEvents();

 
 

-           // Store required properties
-           this.loc = loc;
-           this.service = service.title;
-           this.itemType = itemType; // All issues must have an ID for selection, use generic if none specified
+             for (var i = 0, iMax = this.interiorRings.length; i < iMax; i++) {
+               var ringSweepEvents = this.interiorRings[i].getSweepEvents();

 
 

-           this.id = id ? id : "".concat(QAItem.id());
-           this.update(props); // Some QA services have marker icons to differentiate issues
+               for (var j = 0, jMax = ringSweepEvents.length; j < jMax; j++) {
+                 sweepEvents.push(ringSweepEvents[j]);
+               }
+             }

 
 

-           if (service && typeof service.getIcon === 'function') {
-             this.icon = service.getIcon(itemType);
+             return sweepEvents;
+           }
+         }]);
+
+         return PolyIn;
+       }();
+
+       var MultiPolyIn = /*#__PURE__*/function () {
+         function MultiPolyIn(geom, isSubject) {
+           _classCallCheck(this, MultiPolyIn);
+
+           if (!Array.isArray(geom)) {
+             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
+           }
+
+           try {
+             // if the input looks like a polygon, convert it to a multipolygon
+             if (typeof geom[0][0][0] === 'number') geom = [geom];
+           } catch (ex) {// The input is either malformed or has empty arrays.
+             // In either case, it will be handled later on.
+           }
+
+           this.polys = [];
+           this.bbox = {
+             ll: {
+               x: Number.POSITIVE_INFINITY,
+               y: Number.POSITIVE_INFINITY
+             },
+             ur: {
+               x: Number.NEGATIVE_INFINITY,
+               y: Number.NEGATIVE_INFINITY
+             }
+           };
+
+           for (var i = 0, iMax = geom.length; i < iMax; i++) {
+             var poly = new PolyIn(geom[i], this);
+             if (poly.bbox.ll.x < this.bbox.ll.x) this.bbox.ll.x = poly.bbox.ll.x;
+             if (poly.bbox.ll.y < this.bbox.ll.y) this.bbox.ll.y = poly.bbox.ll.y;
+             if (poly.bbox.ur.x > this.bbox.ur.x) this.bbox.ur.x = poly.bbox.ur.x;
+             if (poly.bbox.ur.y > this.bbox.ur.y) this.bbox.ur.y = poly.bbox.ur.y;
+             this.polys.push(poly);

            }
            }

+
+           this.isSubject = isSubject;

          }
 
          }
 

-         _createClass(QAItem, [{
-           key: "update",
-           value: function update(props) {
-             var _this = this;
+         _createClass(MultiPolyIn, [{
+           key: "getSweepEvents",
+           value: function getSweepEvents() {
+             var sweepEvents = [];

 
 

-             // You can't override this initial information
-             var loc = this.loc,
-                 service = this.service,
-                 itemType = this.itemType,
-                 id = this.id;
-             Object.keys(props).forEach(function (prop) {
-               return _this[prop] = props[prop];
-             });
-             this.loc = loc;
-             this.service = service;
-             this.itemType = itemType;
-             this.id = id;
-             return this;
-           } // Generic handling for newly created QAItems
+             for (var i = 0, iMax = this.polys.length; i < iMax; i++) {
+               var polySweepEvents = this.polys[i].getSweepEvents();

 
 

-         }], [{
-           key: "id",
-           value: function id() {
-             return this.nextId--;
+               for (var j = 0, jMax = polySweepEvents.length; j < jMax; j++) {
+                 sweepEvents.push(polySweepEvents[j]);
+               }
+             }
+
+             return sweepEvents;

            }
          }]);
 
            }
          }]);
 

-         return QAItem;
+         return MultiPolyIn;

        }();
        }();

-       QAItem.nextId = -1;
-
-       //
-       // Optionally, split only the given ways, if multiple ways share
-       // the given node.
-       //
-       // This is the inverse of `iD.actionJoin`.
-       //
-       // For testing convenience, accepts an ID to assign to the new way.
-       // Normally, this will be undefined and the way will automatically
-       // be assigned a new ID.
-       //
-       // Reference:
-       //   https://github.com/systemed/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/SplitWayAction.as
-       //

 
 

-       function actionSplit(nodeIds, newWayIds) {
-         // accept single ID for backwards-compatiblity
-         if (typeof nodeIds === 'string') nodeIds = [nodeIds];
+       var RingOut = /*#__PURE__*/function () {
+         _createClass(RingOut, null, [{
+           key: "factory",

 
 

-         var _wayIDs; // the strategy for picking which way will have a new version and which way is newly created
+           /* Given the segments from the sweep line pass, compute & return a series
+            * of closed rings from all the segments marked to be part of the result */
+           value: function factory(allSegments) {
+             var ringsOut = [];

 
 

+             for (var i = 0, iMax = allSegments.length; i < iMax; i++) {
+               var segment = allSegments[i];
+               if (!segment.isInResult() || segment.ringOut) continue;
+               var prevEvent = null;
+               var event = segment.leftSE;
+               var nextEvent = segment.rightSE;
+               var events = [event];
+               var startingPoint = event.point;
+               var intersectionLEs = [];
+               /* Walk the chain of linked events to form a closed ring */

 
 

-         var _keepHistoryOn = 'longest'; // 'longest', 'first'
-         // The IDs of the ways actually created by running this action
+               while (true) {
+                 prevEvent = event;
+                 event = nextEvent;
+                 events.push(event);
+                 /* Is the ring complete? */

 
 

-         var _createdWayIDs = [];
+                 if (event.point === startingPoint) break;

 
 

-         function dist(graph, nA, nB) {
-           var locA = graph.entity(nA).loc;
-           var locB = graph.entity(nB).loc;
-           var epsilon = 1e-6;
-           return locA && locB ? geoSphericalDistance(locA, locB) : epsilon;
-         } // If the way is closed, we need to search for a partner node
-         // to split the way at.
-         //
-         // The following looks for a node that is both far away from
-         // the initial node in terms of way segment length and nearby
-         // in terms of beeline-distance. This assures that areas get
-         // split on the most "natural" points (independent of the number
-         // of nodes).
-         // For example: bone-shaped areas get split across their waist
-         // line, circles across the diameter.
+                 while (true) {
+                   var availableLEs = event.getAvailableLinkedEvents();
+                   /* Did we hit a dead end? This shouldn't happen. Indicates some earlier
+                    * part of the algorithm malfunctioned... please file a bug report. */

 
 

+                   if (availableLEs.length === 0) {
+                     var firstPt = events[0].point;
+                     var lastPt = events[events.length - 1].point;
+                     throw new Error("Unable to complete output ring starting at [".concat(firstPt.x, ",") + " ".concat(firstPt.y, "]. Last matching segment found ends at") + " [".concat(lastPt.x, ", ").concat(lastPt.y, "]."));
+                   }
+                   /* Only one way to go, so cotinue on the path */

 
 

-         function splitArea(nodes, idxA, graph) {
-           var lengths = new Array(nodes.length);
-           var length;
-           var i;
-           var best = 0;
-           var idxB;

 
 

-           function wrap(index) {
-             return utilWrap(index, nodes.length);
-           } // calculate lengths
+                   if (availableLEs.length === 1) {
+                     nextEvent = availableLEs[0].otherSE;
+                     break;
+                   }
+                   /* We must have an intersection. Check for a completed loop */

 
 
 
 

-           length = 0;
+                   var indexLE = null;

 
 

-           for (i = wrap(idxA + 1); i !== idxA; i = wrap(i + 1)) {
-             length += dist(graph, nodes[i], nodes[wrap(i - 1)]);
-             lengths[i] = length;
-           }
+                   for (var j = 0, jMax = intersectionLEs.length; j < jMax; j++) {
+                     if (intersectionLEs[j].point === event.point) {
+                       indexLE = j;
+                       break;
+                     }
+                   }
+                   /* Found a completed loop. Cut that off and make a ring */

 
 

-           length = 0;

 
 

-           for (i = wrap(idxA - 1); i !== idxA; i = wrap(i - 1)) {
-             length += dist(graph, nodes[i], nodes[wrap(i + 1)]);
+                   if (indexLE !== null) {
+                     var intersectionLE = intersectionLEs.splice(indexLE)[0];
+                     var ringEvents = events.splice(intersectionLE.index);
+                     ringEvents.unshift(ringEvents[0].otherSE);
+                     ringsOut.push(new RingOut(ringEvents.reverse()));
+                     continue;
+                   }
+                   /* register the intersection */

 
 

-             if (length < lengths[i]) {
-               lengths[i] = length;
-             }
-           } // determine best opposite node to split

 
 

+                   intersectionLEs.push({
+                     index: events.length,
+                     point: event.point
+                   });
+                   /* Choose the left-most option to continue the walk */

 
 

-           for (i = 0; i < nodes.length; i++) {
-             var cost = lengths[i] / dist(graph, nodes[idxA], nodes[i]);
+                   var comparator = event.getLeftmostComparator(prevEvent);
+                   nextEvent = availableLEs.sort(comparator)[0].otherSE;
+                   break;
+                 }
+               }

 
 

-             if (cost > best) {
-               idxB = i;
-               best = cost;
+               ringsOut.push(new RingOut(events));

              }
              }

+
+             return ringsOut;

            }
            }

+         }]);

 
 

-           return idxB;
-         }
+         function RingOut(events) {
+           _classCallCheck(this, RingOut);

 
 

-         function totalLengthBetweenNodes(graph, nodes) {
-           var totalLength = 0;
+           this.events = events;

 
 

-           for (var i = 0; i < nodes.length - 1; i++) {
-             totalLength += dist(graph, nodes[i], nodes[i + 1]);
+           for (var i = 0, iMax = events.length; i < iMax; i++) {
+             events[i].segment.ringOut = this;

            }
 
            }
 

-           return totalLength;
+           this.poly = null;

          }
 
          }
 

-         function split(graph, nodeId, wayA, newWayId) {
-           var wayB = osmWay({
-             id: newWayId,
-             tags: wayA.tags
-           }); // `wayB` is the NEW way
+         _createClass(RingOut, [{
+           key: "getGeom",
+           value: function getGeom() {
+             // Remove superfluous points (ie extra points along a straight line),
+             var prevPt = this.events[0].point;
+             var points = [prevPt];

 
 

-           var origNodes = wayA.nodes.slice();
-           var nodesA;
-           var nodesB;
-           var isArea = wayA.isArea();
-           var isOuter = osmIsOldMultipolygonOuterMember(wayA, graph);
+             for (var i = 1, iMax = this.events.length - 1; i < iMax; i++) {
+               var _pt = this.events[i].point;
+               var _nextPt = this.events[i + 1].point;
+               if (compareVectorAngles(_pt, prevPt, _nextPt) === 0) continue;
+               points.push(_pt);
+               prevPt = _pt;
+             } // ring was all (within rounding error of angle calc) colinear points

 
 

-           if (wayA.isClosed()) {
-             var nodes = wayA.nodes.slice(0, -1);
-             var idxA = nodes.indexOf(nodeId);
-             var idxB = splitArea(nodes, idxA, graph);

 
 

-             if (idxB < idxA) {
-               nodesA = nodes.slice(idxA).concat(nodes.slice(0, idxB + 1));
-               nodesB = nodes.slice(idxB, idxA + 1);
-             } else {
-               nodesA = nodes.slice(idxA, idxB + 1);
-               nodesB = nodes.slice(idxB).concat(nodes.slice(0, idxA + 1));
+             if (points.length === 1) return null; // check if the starting point is necessary
+
+             var pt = points[0];
+             var nextPt = points[1];
+             if (compareVectorAngles(pt, prevPt, nextPt) === 0) points.shift();
+             points.push(points[0]);
+             var step = this.isExteriorRing() ? 1 : -1;
+             var iStart = this.isExteriorRing() ? 0 : points.length - 1;
+             var iEnd = this.isExteriorRing() ? points.length : -1;
+             var orderedPoints = [];
+
+             for (var _i = iStart; _i != iEnd; _i += step) {
+               orderedPoints.push([points[_i].x, points[_i].y]);

              }
              }

-           } else {
-             var idx = wayA.nodes.indexOf(nodeId, 1);
-             nodesA = wayA.nodes.slice(0, idx + 1);
-             nodesB = wayA.nodes.slice(idx);
+
+             return orderedPoints;

            }
            }

+         }, {
+           key: "isExteriorRing",
+           value: function isExteriorRing() {
+             if (this._isExteriorRing === undefined) {
+               var enclosing = this.enclosingRing();
+               this._isExteriorRing = enclosing ? !enclosing.isExteriorRing() : true;
+             }

 
 

-           var lengthA = totalLengthBetweenNodes(graph, nodesA);
-           var lengthB = totalLengthBetweenNodes(graph, nodesB);
+             return this._isExteriorRing;
+           }
+         }, {
+           key: "enclosingRing",
+           value: function enclosingRing() {
+             if (this._enclosingRing === undefined) {
+               this._enclosingRing = this._calcEnclosingRing();
+             }

 
 

-           if (_keepHistoryOn === 'longest' && lengthB > lengthA) {
-             // keep the history on the longer way, regardless of the node count
-             wayA = wayA.update({
-               nodes: nodesB
-             });
-             wayB = wayB.update({
-               nodes: nodesA
-             });
-             var temp = lengthA;
-             lengthA = lengthB;
-             lengthB = temp;
-           } else {
-             wayA = wayA.update({
-               nodes: nodesA
-             });
-             wayB = wayB.update({
-               nodes: nodesB
-             });
+             return this._enclosingRing;

            }
            }

+           /* Returns the ring that encloses this one, if any */

 
 

-           if (wayA.tags.step_count) {
-             // divide up the the step count proportionally between the two ways
-             var stepCount = parseFloat(wayA.tags.step_count);
+         }, {
+           key: "_calcEnclosingRing",
+           value: function _calcEnclosingRing() {
+             // start with the ealier sweep line event so that the prevSeg
+             // chain doesn't lead us inside of a loop of ours
+             var leftMostEvt = this.events[0];

 
 

-             if (stepCount && // ensure a number
-             isFinite(stepCount) && // ensure positive
-             stepCount > 0 && // ensure integer
-             Math.round(stepCount) === stepCount) {
-               var tagsA = Object.assign({}, wayA.tags);
-               var tagsB = Object.assign({}, wayB.tags);
-               var ratioA = lengthA / (lengthA + lengthB);
-               var countA = Math.round(stepCount * ratioA);
-               tagsA.step_count = countA.toString();
-               tagsB.step_count = (stepCount - countA).toString();
-               wayA = wayA.update({
-                 tags: tagsA
-               });
-               wayB = wayB.update({
-                 tags: tagsB
-               });
+             for (var i = 1, iMax = this.events.length; i < iMax; i++) {
+               var evt = this.events[i];
+               if (SweepEvent.compare(leftMostEvt, evt) > 0) leftMostEvt = evt;

              }
              }

-           }

 
 

-           graph = graph.replace(wayA);
-           graph = graph.replace(wayB);
-           graph.parentRelations(wayA).forEach(function (relation) {
-             var member; // Turn restrictions - make sure:
-             // 1. Splitting a FROM/TO way - only `wayA` OR `wayB` remains in relation
-             //    (whichever one is connected to the VIA node/ways)
-             // 2. Splitting a VIA way - `wayB` remains in relation as a VIA way
+             var prevSeg = leftMostEvt.segment.prevInResult();
+             var prevPrevSeg = prevSeg ? prevSeg.prevInResult() : null;

 
 

-             if (relation.hasFromViaTo()) {
-               var f = relation.memberByRole('from');
-               var v = relation.membersByRole('via');
-               var t = relation.memberByRole('to');
-               var i; // 1. split a FROM/TO
+             while (true) {
+               // no segment found, thus no ring can enclose us
+               if (!prevSeg) return null; // no segments below prev segment found, thus the ring of the prev
+               // segment must loop back around and enclose us

 
 

-               if (f.id === wayA.id || t.id === wayA.id) {
-                 var keepB = false;
+               if (!prevPrevSeg) return prevSeg.ringOut; // if the two segments are of different rings, the ring of the prev
+               // segment must either loop around us or the ring of the prev prev
+               // seg, which would make us and the ring of the prev peers
+
+               if (prevPrevSeg.ringOut !== prevSeg.ringOut) {
+                 if (prevPrevSeg.ringOut.enclosingRing() !== prevSeg.ringOut) {
+                   return prevSeg.ringOut;
+                 } else return prevSeg.ringOut.enclosingRing();
+               } // two segments are from the same ring, so this was a penisula
+               // of that ring. iterate downward, keep searching
+
+
+               prevSeg = prevPrevSeg.prevInResult();
+               prevPrevSeg = prevSeg ? prevSeg.prevInResult() : null;
+             }
+           }
+         }]);
+
+         return RingOut;
+       }();

 
 

-                 if (v.length === 1 && v[0].type === 'node') {
-                   // check via node
-                   keepB = wayB.contains(v[0].id);
-                 } else {
-                   // check via way(s)
-                   for (i = 0; i < v.length; i++) {
-                     if (v[i].type === 'way') {
-                       var wayVia = graph.hasEntity(v[i].id);
+       var PolyOut = /*#__PURE__*/function () {
+         function PolyOut(exteriorRing) {
+           _classCallCheck(this, PolyOut);

 
 

-                       if (wayVia && utilArrayIntersection(wayB.nodes, wayVia.nodes).length) {
-                         keepB = true;
-                         break;
-                       }
-                     }
-                   }
-                 }
+           this.exteriorRing = exteriorRing;
+           exteriorRing.poly = this;
+           this.interiorRings = [];
+         }

 
 

-                 if (keepB) {
-                   relation = relation.replaceMember(wayA, wayB);
-                   graph = graph.replace(relation);
-                 } // 2. split a VIA
+         _createClass(PolyOut, [{
+           key: "addInterior",
+           value: function addInterior(ring) {
+             this.interiorRings.push(ring);
+             ring.poly = this;
+           }
+         }, {
+           key: "getGeom",
+           value: function getGeom() {
+             var geom = [this.exteriorRing.getGeom()]; // exterior ring was all (within rounding error of angle calc) colinear points

 
 

-               } else {
-                 for (i = 0; i < v.length; i++) {
-                   if (v[i].type === 'way' && v[i].id === wayA.id) {
-                     member = {
-                       id: wayB.id,
-                       type: 'way',
-                       role: 'via'
-                     };
-                     graph = actionAddMember(relation.id, member, v[i].index + 1)(graph);
-                     break;
-                   }
-                 }
-               } // All other relations (Routes, Multipolygons, etc):
-               // 1. Both `wayA` and `wayB` remain in the relation
-               // 2. But must be inserted as a pair (see `actionAddMember` for details)
+             if (geom[0] === null) return null;

 
 

-             } else {
-               if (relation === isOuter) {
-                 graph = graph.replace(relation.mergeTags(wayA.tags));
-                 graph = graph.replace(wayA.update({
-                   tags: {}
-                 }));
-                 graph = graph.replace(wayB.update({
-                   tags: {}
-                 }));
-               }
+             for (var i = 0, iMax = this.interiorRings.length; i < iMax; i++) {
+               var ringGeom = this.interiorRings[i].getGeom(); // interior ring was all (within rounding error of angle calc) colinear points

 
 

-               member = {
-                 id: wayB.id,
-                 type: 'way',
-                 role: relation.memberById(wayA.id).role
-               };
-               var insertPair = {
-                 originalID: wayA.id,
-                 insertedID: wayB.id,
-                 nodes: origNodes
-               };
-               graph = actionAddMember(relation.id, member, undefined, insertPair)(graph);
+               if (ringGeom === null) continue;
+               geom.push(ringGeom);

              }
              }

-           });

 
 

-           if (!isOuter && isArea) {
-             var multipolygon = osmRelation({
-               tags: Object.assign({}, wayA.tags, {
-                 type: 'multipolygon'
-               }),
-               members: [{
-                 id: wayA.id,
-                 role: 'outer',
-                 type: 'way'
-               }, {
-                 id: wayB.id,
-                 role: 'outer',
-                 type: 'way'
-               }]
-             });
-             graph = graph.replace(multipolygon);
-             graph = graph.replace(wayA.update({
-               tags: {}
-             }));
-             graph = graph.replace(wayB.update({
-               tags: {}
-             }));
+             return geom;

            }
            }

+         }]);

 
 

-           _createdWayIDs.push(wayB.id);
+         return PolyOut;
+       }();

 
 

-           return graph;
+       var MultiPolyOut = /*#__PURE__*/function () {
+         function MultiPolyOut(rings) {
+           _classCallCheck(this, MultiPolyOut);
+
+           this.rings = rings;
+           this.polys = this._composePolys(rings);

          }
 
          }
 

-         var action = function action(graph) {
-           _createdWayIDs = [];
-           var newWayIndex = 0;
+         _createClass(MultiPolyOut, [{
+           key: "getGeom",
+           value: function getGeom() {
+             var geom = [];

 
 

-           for (var i = 0; i < nodeIds.length; i++) {
-             var nodeId = nodeIds[i];
-             var candidates = action.waysForNode(nodeId, graph);
+             for (var i = 0, iMax = this.polys.length; i < iMax; i++) {
+               var polyGeom = this.polys[i].getGeom(); // exterior ring was all (within rounding error of angle calc) colinear points

 
 

-             for (var j = 0; j < candidates.length; j++) {
-               graph = split(graph, nodeId, candidates[j], newWayIds && newWayIds[newWayIndex]);
-               newWayIndex += 1;
+               if (polyGeom === null) continue;
+               geom.push(polyGeom);

              }
              }

+
+             return geom;

            }
            }

+         }, {
+           key: "_composePolys",
+           value: function _composePolys(rings) {
+             var polys = [];

 
 

-           return graph;
-         };
+             for (var i = 0, iMax = rings.length; i < iMax; i++) {
+               var ring = rings[i];
+               if (ring.poly) continue;
+               if (ring.isExteriorRing()) polys.push(new PolyOut(ring));else {
+                 var enclosingRing = ring.enclosingRing();
+                 if (!enclosingRing.poly) polys.push(new PolyOut(enclosingRing));
+                 enclosingRing.poly.addInterior(ring);
+               }
+             }

 
 

-         action.getCreatedWayIDs = function () {
-           return _createdWayIDs;
-         };
+             return polys;
+           }
+         }]);

 
 

-         action.waysForNode = function (nodeId, graph) {
-           var node = graph.entity(nodeId);
-           var splittableParents = graph.parentWays(node).filter(isSplittable);
+         return MultiPolyOut;
+       }();
+       /**
+        * NOTE:  We must be careful not to change any segments while
+        *        they are in the SplayTree. AFAIK, there's no way to tell
+        *        the tree to rebalance itself - thus before splitting
+        *        a segment that's in the tree, we remove it from the tree,
+        *        do the split, then re-insert it. (Even though splitting a
+        *        segment *shouldn't* change its correct position in the
+        *        sweep line tree, the reality is because of rounding errors,
+        *        it sometimes does.)
+        */

 
 

-           if (!_wayIDs) {
-             // If the ways to split aren't specified, only split the lines.
-             // If there are no lines to split, split the areas.
-             var hasLine = splittableParents.some(function (parent) {
-               return parent.geometry(graph) === 'line';
-             });

 
 

-             if (hasLine) {
-               return splittableParents.filter(function (parent) {
-                 return parent.geometry(graph) === 'line';
-               });
-             }
-           }
+       var SweepLine = /*#__PURE__*/function () {
+         function SweepLine(queue) {
+           var comparator = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Segment.compare;

 
 

-           return splittableParents;
+           _classCallCheck(this, SweepLine);

 
 

-           function isSplittable(parent) {
-             // If the ways to split are specified, ignore everything else.
-             if (_wayIDs && _wayIDs.indexOf(parent.id) === -1) return false; // We can fake splitting closed ways at their endpoints...
+           this.queue = queue;
+           this.tree = new Tree(comparator);
+           this.segments = [];
+         }

 
 

-             if (parent.isClosed()) return true; // otherwise, we can't split nodes at their endpoints.
+         _createClass(SweepLine, [{
+           key: "process",
+           value: function process(event) {
+             var segment = event.segment;
+             var newEvents = []; // if we've already been consumed by another segment,
+             // clean up our body parts and get out

 
 

-             for (var i = 1; i < parent.nodes.length - 1; i++) {
-               if (parent.nodes[i] === nodeId) return true;
+             if (event.consumedBy) {
+               if (event.isLeft) this.queue.remove(event.otherSE);else this.tree.remove(segment);
+               return newEvents;

              }
 
              }
 

-             return false;
-           }
-         };
+             var node = event.isLeft ? this.tree.insert(segment) : this.tree.find(segment);
+             if (!node) throw new Error("Unable to find segment #".concat(segment.id, " ") + "[".concat(segment.leftSE.point.x, ", ").concat(segment.leftSE.point.y, "] -> ") + "[".concat(segment.rightSE.point.x, ", ").concat(segment.rightSE.point.y, "] ") + 'in SweepLine tree. Please submit a bug report.');
+             var prevNode = node;
+             var nextNode = node;
+             var prevSeg = undefined;
+             var nextSeg = undefined; // skip consumed segments still in tree

 
 

-         action.ways = function (graph) {
-           return utilArrayUniq([].concat.apply([], nodeIds.map(function (nodeId) {
-             return action.waysForNode(nodeId, graph);
-           })));
-         };
+             while (prevSeg === undefined) {
+               prevNode = this.tree.prev(prevNode);
+               if (prevNode === null) prevSeg = null;else if (prevNode.key.consumedBy === undefined) prevSeg = prevNode.key;
+             } // skip consumed segments still in tree

 
 

-         action.disabled = function (graph) {
-           for (var i = 0; i < nodeIds.length; i++) {
-             var nodeId = nodeIds[i];
-             var candidates = action.waysForNode(nodeId, graph);

 
 

-             if (candidates.length === 0 || _wayIDs && _wayIDs.length !== candidates.length) {
-               return 'not_eligible';
+             while (nextSeg === undefined) {
+               nextNode = this.tree.next(nextNode);
+               if (nextNode === null) nextSeg = null;else if (nextNode.key.consumedBy === undefined) nextSeg = nextNode.key;

              }
              }

-           }
-         };
-
-         action.limitWays = function (val) {
-           if (!arguments.length) return _wayIDs;
-           _wayIDs = val;
-           return action;
-         };
-
-         action.keepHistoryOn = function (val) {
-           if (!arguments.length) return _keepHistoryOn;
-           _keepHistoryOn = val;
-           return action;
-         };

 
 

-         return action;
-       }
+             if (event.isLeft) {
+               // Check for intersections against the previous segment in the sweep line
+               var prevMySplitter = null;

 
 

-       function coreGraph(other, mutable) {
-         if (!(this instanceof coreGraph)) return new coreGraph(other, mutable);
+               if (prevSeg) {
+                 var prevInter = prevSeg.getIntersection(segment);

 
 

-         if (other instanceof coreGraph) {
-           var base = other.base();
-           this.entities = Object.assign(Object.create(base.entities), other.entities);
-           this._parentWays = Object.assign(Object.create(base.parentWays), other._parentWays);
-           this._parentRels = Object.assign(Object.create(base.parentRels), other._parentRels);
-         } else {
-           this.entities = Object.create({});
-           this._parentWays = Object.create({});
-           this._parentRels = Object.create({});
-           this.rebase(other || [], [this]);
-         }
+                 if (prevInter !== null) {
+                   if (!segment.isAnEndpoint(prevInter)) prevMySplitter = prevInter;

 
 

-         this.transients = {};
-         this._childNodes = {};
-         this.frozen = !mutable;
-       }
-       coreGraph.prototype = {
-         hasEntity: function hasEntity(id) {
-           return this.entities[id];
-         },
-         entity: function entity(id) {
-           var entity = this.entities[id]; //https://github.com/openstreetmap/iD/issues/3973#issuecomment-307052376
+                   if (!prevSeg.isAnEndpoint(prevInter)) {
+                     var newEventsFromSplit = this._splitSafely(prevSeg, prevInter);

 
 

-           if (!entity) {
-             entity = this.entities.__proto__[id]; // eslint-disable-line no-proto
-           }
+                     for (var i = 0, iMax = newEventsFromSplit.length; i < iMax; i++) {
+                       newEvents.push(newEventsFromSplit[i]);
+                     }
+                   }
+                 }
+               } // Check for intersections against the next segment in the sweep line

 
 

-           if (!entity) {
-             throw new Error('entity ' + id + ' not found');
-           }

 
 

-           return entity;
-         },
-         geometry: function geometry(id) {
-           return this.entity(id).geometry(this);
-         },
-         "transient": function transient(entity, key, fn) {
-           var id = entity.id;
-           var transients = this.transients[id] || (this.transients[id] = {});
+               var nextMySplitter = null;

 
 

-           if (transients[key] !== undefined) {
-             return transients[key];
-           }
+               if (nextSeg) {
+                 var nextInter = nextSeg.getIntersection(segment);

 
 

-           transients[key] = fn.call(entity);
-           return transients[key];
-         },
-         parentWays: function parentWays(entity) {
-           var parents = this._parentWays[entity.id];
-           var result = [];
+                 if (nextInter !== null) {
+                   if (!segment.isAnEndpoint(nextInter)) nextMySplitter = nextInter;

 
 

-           if (parents) {
-             parents.forEach(function (id) {
-               result.push(this.entity(id));
-             }, this);
-           }
+                   if (!nextSeg.isAnEndpoint(nextInter)) {
+                     var _newEventsFromSplit = this._splitSafely(nextSeg, nextInter);

 
 

-           return result;
-         },
-         isPoi: function isPoi(entity) {
-           var parents = this._parentWays[entity.id];
-           return !parents || parents.size === 0;
-         },
-         isShared: function isShared(entity) {
-           var parents = this._parentWays[entity.id];
-           return parents && parents.size > 1;
-         },
-         parentRelations: function parentRelations(entity) {
-           var parents = this._parentRels[entity.id];
-           var result = [];
+                     for (var _i = 0, _iMax = _newEventsFromSplit.length; _i < _iMax; _i++) {
+                       newEvents.push(_newEventsFromSplit[_i]);
+                     }
+                   }
+                 }
+               } // For simplicity, even if we find more than one intersection we only
+               // spilt on the 'earliest' (sweep-line style) of the intersections.
+               // The other intersection will be handled in a future process().

 
 

-           if (parents) {
-             parents.forEach(function (id) {
-               result.push(this.entity(id));
-             }, this);
-           }

 
 

-           return result;
-         },
-         parentMultipolygons: function parentMultipolygons(entity) {
-           return this.parentRelations(entity).filter(function (relation) {
-             return relation.isMultipolygon();
-           });
-         },
-         childNodes: function childNodes(entity) {
-           if (this._childNodes[entity.id]) return this._childNodes[entity.id];
-           if (!entity.nodes) return [];
-           var nodes = [];
+               if (prevMySplitter !== null || nextMySplitter !== null) {
+                 var mySplitter = null;
+                 if (prevMySplitter === null) mySplitter = nextMySplitter;else if (nextMySplitter === null) mySplitter = prevMySplitter;else {
+                   var cmpSplitters = SweepEvent.comparePoints(prevMySplitter, nextMySplitter);
+                   mySplitter = cmpSplitters <= 0 ? prevMySplitter : nextMySplitter;
+                 } // Rounding errors can cause changes in ordering,
+                 // so remove afected segments and right sweep events before splitting

 
 

-           for (var i = 0; i < entity.nodes.length; i++) {
-             nodes[i] = this.entity(entity.nodes[i]);
-           }
-           this._childNodes[entity.id] = nodes;
-           return this._childNodes[entity.id];
-         },
-         base: function base() {
-           return {
-             'entities': Object.getPrototypeOf(this.entities),
-             'parentWays': Object.getPrototypeOf(this._parentWays),
-             'parentRels': Object.getPrototypeOf(this._parentRels)
-           };
-         },
-         // Unlike other graph methods, rebase mutates in place. This is because it
-         // is used only during the history operation that merges newly downloaded
-         // data into each state. To external consumers, it should appear as if the
-         // graph always contained the newly downloaded data.
-         rebase: function rebase(entities, stack, force) {
-           var base = this.base();
-           var i, j, k, id;
+                 this.queue.remove(segment.rightSE);
+                 newEvents.push(segment.rightSE);

 
 

-           for (i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             if (!entity.visible || !force && base.entities[entity.id]) continue; // Merging data into the base graph
+                 var _newEventsFromSplit2 = segment.split(mySplitter);

 
 

-             base.entities[entity.id] = entity;
+                 for (var _i2 = 0, _iMax2 = _newEventsFromSplit2.length; _i2 < _iMax2; _i2++) {
+                   newEvents.push(_newEventsFromSplit2[_i2]);
+                 }
+               }

 
 

-             this._updateCalculated(undefined, entity, base.parentWays, base.parentRels); // Restore provisionally-deleted nodes that are discovered to have an extant parent
+               if (newEvents.length > 0) {
+                 // We found some intersections, so re-do the current event to
+                 // make sure sweep line ordering is totally consistent for later
+                 // use with the segment 'prev' pointers
+                 this.tree.remove(segment);
+                 newEvents.push(event);
+               } else {
+                 // done with left event
+                 this.segments.push(segment);
+                 segment.prev = prevSeg;
+               }
+             } else {
+               // event.isRight
+               // since we're about to be removed from the sweep line, check for
+               // intersections between our previous and next segments
+               if (prevSeg && nextSeg) {
+                 var inter = prevSeg.getIntersection(nextSeg);

 
 

+                 if (inter !== null) {
+                   if (!prevSeg.isAnEndpoint(inter)) {
+                     var _newEventsFromSplit3 = this._splitSafely(prevSeg, inter);

 
 

-             if (entity.type === 'way') {
-               for (j = 0; j < entity.nodes.length; j++) {
-                 id = entity.nodes[j];
+                     for (var _i3 = 0, _iMax3 = _newEventsFromSplit3.length; _i3 < _iMax3; _i3++) {
+                       newEvents.push(_newEventsFromSplit3[_i3]);
+                     }
+                   }

 
 

-                 for (k = 1; k < stack.length; k++) {
-                   var ents = stack[k].entities;
+                   if (!nextSeg.isAnEndpoint(inter)) {
+                     var _newEventsFromSplit4 = this._splitSafely(nextSeg, inter);

 
 

-                   if (ents.hasOwnProperty(id) && ents[id] === undefined) {
-                     delete ents[id];
+                     for (var _i4 = 0, _iMax4 = _newEventsFromSplit4.length; _i4 < _iMax4; _i4++) {
+                       newEvents.push(_newEventsFromSplit4[_i4]);
+                     }

                    }
                  }
                }
                    }
                  }
                }

+
+               this.tree.remove(segment);

              }
              }

+
+             return newEvents;

            }
            }

+           /* Safely split a segment that is currently in the datastructures
+            * IE - a segment other than the one that is currently being processed. */

 
 

-           for (i = 0; i < stack.length; i++) {
-             stack[i]._updateRebased();
+         }, {
+           key: "_splitSafely",
+           value: function _splitSafely(seg, pt) {
+             // Rounding errors can cause changes in ordering,
+             // so remove afected segments and right sweep events before splitting
+             // removeNode() doesn't work, so have re-find the seg
+             // https://github.com/w8r/splay-tree/pull/5
+             this.tree.remove(seg);
+             var rightSE = seg.rightSE;
+             this.queue.remove(rightSE);
+             var newEvents = seg.split(pt);
+             newEvents.push(rightSE); // splitting can trigger consumption
+
+             if (seg.consumedBy === undefined) this.tree.insert(seg);
+             return newEvents;

            }
            }

-         },
-         _updateRebased: function _updateRebased() {
-           var base = this.base();
-           Object.keys(this._parentWays).forEach(function (child) {
-             if (base.parentWays[child]) {
-               base.parentWays[child].forEach(function (id) {
-                 if (!this.entities.hasOwnProperty(id)) {
-                   this._parentWays[child].add(id);
-                 }
-               }, this);
+         }]);
+
+         return SweepLine;
+       }();
+
+       var POLYGON_CLIPPING_MAX_QUEUE_SIZE = typeof process !== 'undefined' && process.env.POLYGON_CLIPPING_MAX_QUEUE_SIZE || 1000000;
+       var POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS = typeof process !== 'undefined' && process.env.POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS || 1000000;
+
+       var Operation = /*#__PURE__*/function () {
+         function Operation() {
+           _classCallCheck(this, Operation);
+         }
+
+         _createClass(Operation, [{
+           key: "run",
+           value: function run(type, geom, moreGeoms) {
+             operation.type = type;
+             rounder.reset();
+             /* Convert inputs to MultiPoly objects */
+
+             var multipolys = [new MultiPolyIn(geom, true)];
+
+             for (var i = 0, iMax = moreGeoms.length; i < iMax; i++) {
+               multipolys.push(new MultiPolyIn(moreGeoms[i], false));

              }
              }

-           }, this);
-           Object.keys(this._parentRels).forEach(function (child) {
-             if (base.parentRels[child]) {
-               base.parentRels[child].forEach(function (id) {
-                 if (!this.entities.hasOwnProperty(id)) {
-                   this._parentRels[child].add(id);
+
+             operation.numMultiPolys = multipolys.length;
+             /* BBox optimization for difference operation
+              * If the bbox of a multipolygon that's part of the clipping doesn't
+              * intersect the bbox of the subject at all, we can just drop that
+              * multiploygon. */
+
+             if (operation.type === 'difference') {
+               // in place removal
+               var subject = multipolys[0];
+               var _i = 1;
+
+               while (_i < multipolys.length) {
+                 if (getBboxOverlap(multipolys[_i].bbox, subject.bbox) !== null) _i++;else multipolys.splice(_i, 1);
+               }
+             }
+             /* BBox optimization for intersection operation
+              * If we can find any pair of multipolygons whose bbox does not overlap,
+              * then the result will be empty. */
+
+
+             if (operation.type === 'intersection') {
+               // TODO: this is O(n^2) in number of polygons. By sorting the bboxes,
+               //       it could be optimized to O(n * ln(n))
+               for (var _i2 = 0, _iMax = multipolys.length; _i2 < _iMax; _i2++) {
+                 var mpA = multipolys[_i2];
+
+                 for (var j = _i2 + 1, jMax = multipolys.length; j < jMax; j++) {
+                   if (getBboxOverlap(mpA.bbox, multipolys[j].bbox) === null) return [];

                  }
                  }

-               }, this);
+               }

              }
              }

-           }, this);
-           this.transients = {}; // this._childNodes is not updated, under the assumption that
-           // ways are always downloaded with their child nodes.
-         },
-         // Updates calculated properties (parentWays, parentRels) for the specified change
-         _updateCalculated: function _updateCalculated(oldentity, entity, parentWays, parentRels) {
-           parentWays = parentWays || this._parentWays;
-           parentRels = parentRels || this._parentRels;
-           var type = entity && entity.type || oldentity && oldentity.type;
-           var removed, added, i;
+             /* Put segment endpoints in a priority queue */

 
 

-           if (type === 'way') {
-             // Update parentWays
-             if (oldentity && entity) {
-               removed = utilArrayDifference(oldentity.nodes, entity.nodes);
-               added = utilArrayDifference(entity.nodes, oldentity.nodes);
-             } else if (oldentity) {
-               removed = oldentity.nodes;
-               added = [];
-             } else if (entity) {
-               removed = [];
-               added = entity.nodes;
-             }

 
 

-             for (i = 0; i < removed.length; i++) {
-               // make a copy of prototype property, store as own property, and update..
-               parentWays[removed[i]] = new Set(parentWays[removed[i]]);
-               parentWays[removed[i]]["delete"](oldentity.id);
-             }
+             var queue = new Tree(SweepEvent.compare);

 
 

-             for (i = 0; i < added.length; i++) {
-               // make a copy of prototype property, store as own property, and update..
-               parentWays[added[i]] = new Set(parentWays[added[i]]);
-               parentWays[added[i]].add(entity.id);
-             }
-           } else if (type === 'relation') {
-             // Update parentRels
-             // diff only on the IDs since the same entity can be a member multiple times with different roles
-             var oldentityMemberIDs = oldentity ? oldentity.members.map(function (m) {
-               return m.id;
-             }) : [];
-             var entityMemberIDs = entity ? entity.members.map(function (m) {
-               return m.id;
-             }) : [];
+             for (var _i3 = 0, _iMax2 = multipolys.length; _i3 < _iMax2; _i3++) {
+               var sweepEvents = multipolys[_i3].getSweepEvents();

 
 

-             if (oldentity && entity) {
-               removed = utilArrayDifference(oldentityMemberIDs, entityMemberIDs);
-               added = utilArrayDifference(entityMemberIDs, oldentityMemberIDs);
-             } else if (oldentity) {
-               removed = oldentityMemberIDs;
-               added = [];
-             } else if (entity) {
-               removed = [];
-               added = entityMemberIDs;
-             }
+               for (var _j = 0, _jMax = sweepEvents.length; _j < _jMax; _j++) {
+                 queue.insert(sweepEvents[_j]);

 
 

-             for (i = 0; i < removed.length; i++) {
-               // make a copy of prototype property, store as own property, and update..
-               parentRels[removed[i]] = new Set(parentRels[removed[i]]);
-               parentRels[removed[i]]["delete"](oldentity.id);
+                 if (queue.size > POLYGON_CLIPPING_MAX_QUEUE_SIZE) {
+                   // prevents an infinite loop, an otherwise common manifestation of bugs
+                   throw new Error('Infinite loop when putting segment endpoints in a priority queue ' + '(queue size too big). Please file a bug report.');
+                 }
+               }

              }
              }

+             /* Pass the sweep line over those endpoints */

 
 

-             for (i = 0; i < added.length; i++) {
-               // make a copy of prototype property, store as own property, and update..
-               parentRels[added[i]] = new Set(parentRels[added[i]]);
-               parentRels[added[i]].add(entity.id);
-             }
-           }
-         },
-         replace: function replace(entity) {
-           if (this.entities[entity.id] === entity) return this;
-           return this.update(function () {
-             this._updateCalculated(this.entities[entity.id], entity);

 
 

-             this.entities[entity.id] = entity;
-           });
-         },
-         remove: function remove(entity) {
-           return this.update(function () {
-             this._updateCalculated(entity, undefined);
+             var sweepLine = new SweepLine(queue);
+             var prevQueueSize = queue.size;
+             var node = queue.pop();

 
 

-             this.entities[entity.id] = undefined;
-           });
-         },
-         revert: function revert(id) {
-           var baseEntity = this.base().entities[id];
-           var headEntity = this.entities[id];
-           if (headEntity === baseEntity) return this;
-           return this.update(function () {
-             this._updateCalculated(headEntity, baseEntity);
+             while (node) {
+               var evt = node.key;

 
 

-             delete this.entities[id];
-           });
-         },
-         update: function update() {
-           var graph = this.frozen ? coreGraph(this, true) : this;
+               if (queue.size === prevQueueSize) {
+                 // prevents an infinite loop, an otherwise common manifestation of bugs
+                 var seg = evt.segment;
+                 throw new Error("Unable to pop() ".concat(evt.isLeft ? 'left' : 'right', " SweepEvent ") + "[".concat(evt.point.x, ", ").concat(evt.point.y, "] from segment #").concat(seg.id, " ") + "[".concat(seg.leftSE.point.x, ", ").concat(seg.leftSE.point.y, "] -> ") + "[".concat(seg.rightSE.point.x, ", ").concat(seg.rightSE.point.y, "] from queue. ") + 'Please file a bug report.');
+               }

 
 

-           for (var i = 0; i < arguments.length; i++) {
-             arguments[i].call(graph, graph);
-           }
+               if (queue.size > POLYGON_CLIPPING_MAX_QUEUE_SIZE) {
+                 // prevents an infinite loop, an otherwise common manifestation of bugs
+                 throw new Error('Infinite loop when passing sweep line over endpoints ' + '(queue size too big). Please file a bug report.');
+               }

 
 

-           if (this.frozen) graph.frozen = true;
-           return graph;
-         },
-         // Obliterates any existing entities
-         load: function load(entities) {
-           var base = this.base();
-           this.entities = Object.create(base.entities);
+               if (sweepLine.segments.length > POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS) {
+                 // prevents an infinite loop, an otherwise common manifestation of bugs
+                 throw new Error('Infinite loop when passing sweep line over endpoints ' + '(too many sweep line segments). Please file a bug report.');
+               }

 
 

-           for (var i in entities) {
-             this.entities[i] = entities[i];
+               var newEvents = sweepLine.process(evt);

 
 

-             this._updateCalculated(base.entities[i], this.entities[i]);
+               for (var _i4 = 0, _iMax3 = newEvents.length; _i4 < _iMax3; _i4++) {
+                 var _evt = newEvents[_i4];
+                 if (_evt.consumedBy === undefined) queue.insert(_evt);
+               }
+
+               prevQueueSize = queue.size;
+               node = queue.pop();
+             } // free some memory we don't need anymore
+
+
+             rounder.reset();
+             /* Collect and compile segments we're keeping into a multipolygon */
+
+             var ringsOut = RingOut.factory(sweepLine.segments);
+             var result = new MultiPolyOut(ringsOut);
+             return result.getGeom();

            }
            }

+         }]);

 
 

-           return this;
-         }
-       };
+         return Operation;
+       }(); // singleton available by import

 
 

-       function osmTurn(turn) {
-         if (!(this instanceof osmTurn)) {
-           return new osmTurn(turn);
-         }

 
 

-         Object.assign(this, turn);
-       }
-       function osmIntersection(graph, startVertexId, maxDistance) {
-         maxDistance = maxDistance || 30; // in meters
+       var operation = new Operation();

 
 

-         var vgraph = coreGraph(); // virtual graph
+       var union = function union(geom) {
+         for (var _len = arguments.length, moreGeoms = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+           moreGeoms[_key - 1] = arguments[_key];
+         }

 
 

-         var i, j, k;
+         return operation.run('union', geom, moreGeoms);
+       };

 
 

-         function memberOfRestriction(entity) {
-           return graph.parentRelations(entity).some(function (r) {
-             return r.isRestriction();
-           });
+       var intersection$1 = function intersection(geom) {
+         for (var _len2 = arguments.length, moreGeoms = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+           moreGeoms[_key2 - 1] = arguments[_key2];

          }
 
          }
 

-         function isRoad(way) {
-           if (way.isArea() || way.isDegenerate()) return false;
-           var roads = {
-             'motorway': true,
-             'motorway_link': true,
-             'trunk': true,
-             'trunk_link': true,
-             'primary': true,
-             'primary_link': true,
-             'secondary': true,
-             'secondary_link': true,
-             'tertiary': true,
-             'tertiary_link': true,
-             'residential': true,
-             'unclassified': true,
-             'living_street': true,
-             'service': true,
-             'road': true,
-             'track': true
-           };
-           return roads[way.tags.highway];
+         return operation.run('intersection', geom, moreGeoms);
+       };
+
+       var xor = function xor(geom) {
+         for (var _len3 = arguments.length, moreGeoms = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+           moreGeoms[_key3 - 1] = arguments[_key3];

          }
 
          }
 

-         var startNode = graph.entity(startVertexId);
-         var checkVertices = [startNode];
-         var checkWays;
-         var vertices = [];
-         var vertexIds = [];
-         var vertex;
-         var ways = [];
-         var wayIds = [];
-         var way;
-         var nodes = [];
-         var node;
-         var parents = [];
-         var parent; // `actions` will store whatever actions must be performed to satisfy
-         // preconditions for adding a turn restriction to this intersection.
-         //  - Remove any existing degenerate turn restrictions (missing from/to, etc)
-         //  - Reverse oneways so that they are drawn in the forward direction
-         //  - Split ways on key vertices
+         return operation.run('xor', geom, moreGeoms);
+       };

 
 

-         var actions = []; // STEP 1:  walk the graph outwards from starting vertex to search
-         //  for more key vertices and ways to include in the intersection..
+       var difference = function difference(subjectGeom) {
+         for (var _len4 = arguments.length, clippingGeoms = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
+           clippingGeoms[_key4 - 1] = arguments[_key4];
+         }

 
 

-         while (checkVertices.length) {
-           vertex = checkVertices.pop(); // check this vertex for parent ways that are roads
+         return operation.run('difference', subjectGeom, clippingGeoms);
+       };

 
 

-           checkWays = graph.parentWays(vertex);
-           var hasWays = false;
+       var index = {
+         union: union,
+         intersection: intersection$1,
+         xor: xor,
+         difference: difference
+       };

 
 

-           for (i = 0; i < checkWays.length; i++) {
-             way = checkWays[i];
-             if (!isRoad(way) && !memberOfRestriction(way)) continue;
-             ways.push(way); // it's a road, or it's already in a turn restriction
+       var geojsonPrecision = {exports: {}};

 
 

-             hasWays = true; // check the way's children for more key vertices
+       (function () {
+         function parse(t, coordinatePrecision, extrasPrecision) {
+           function point(p) {
+             return p.map(function (e, index) {
+               if (index < 2) {
+                 return 1 * e.toFixed(coordinatePrecision);
+               } else {
+                 return 1 * e.toFixed(extrasPrecision);
+               }
+             });
+           }

 
 

-             nodes = utilArrayUniq(graph.childNodes(way));
+           function multi(l) {
+             return l.map(point);
+           }

 
 

-             for (j = 0; j < nodes.length; j++) {
-               node = nodes[j];
-               if (node === vertex) continue; // same thing
+           function poly(p) {
+             return p.map(multi);
+           }

 
 

-               if (vertices.indexOf(node) !== -1) continue; // seen it already
+           function multiPoly(m) {
+             return m.map(poly);
+           }

 
 

-               if (geoSphericalDistance(node.loc, startNode.loc) > maxDistance) continue; // too far from start
-               // a key vertex will have parents that are also roads
+           function geometry(obj) {
+             if (!obj) {
+               return {};
+             }

 
 

-               var hasParents = false;
-               parents = graph.parentWays(node);
+             switch (obj.type) {
+               case "Point":
+                 obj.coordinates = point(obj.coordinates);
+                 return obj;

 
 

-               for (k = 0; k < parents.length; k++) {
-                 parent = parents[k];
-                 if (parent === way) continue; // same thing
+               case "LineString":
+               case "MultiPoint":
+                 obj.coordinates = multi(obj.coordinates);
+                 return obj;

 
 

-                 if (ways.indexOf(parent) !== -1) continue; // seen it already
+               case "Polygon":
+               case "MultiLineString":
+                 obj.coordinates = poly(obj.coordinates);
+                 return obj;

 
 

-                 if (!isRoad(parent)) continue; // not a road
+               case "MultiPolygon":
+                 obj.coordinates = multiPoly(obj.coordinates);
+                 return obj;

 
 

-                 hasParents = true;
-                 break;
-               }
+               case "GeometryCollection":
+                 obj.geometries = obj.geometries.map(geometry);
+                 return obj;

 
 

-               if (hasParents) {
-                 checkVertices.push(node);
-               }
+               default:
+                 return {};

              }
            }
 
              }
            }
 

-           if (hasWays) {
-             vertices.push(vertex);
+           function feature(obj) {
+             obj.geometry = geometry(obj.geometry);
+             return obj;

            }
            }

-         }
-
-         vertices = utilArrayUniq(vertices);
-         ways = utilArrayUniq(ways); // STEP 2:  Build a virtual graph containing only the entities in the intersection..
-         // Everything done after this step should act on the virtual graph
-         // Any actions that must be performed later to the main graph go in `actions` array
-
-         ways.forEach(function (way) {
-           graph.childNodes(way).forEach(function (node) {
-             vgraph = vgraph.replace(node);
-           });
-           vgraph = vgraph.replace(way);
-           graph.parentRelations(way).forEach(function (relation) {
-             if (relation.isRestriction()) {
-               if (relation.isValidRestriction(graph)) {
-                 vgraph = vgraph.replace(relation);
-               } else if (relation.isComplete(graph)) {
-                 actions.push(actionDeleteRelation(relation.id));
-               }
-             }
-           });
-         }); // STEP 3:  Force all oneways to be drawn in the forward direction

 
 

-         ways.forEach(function (w) {
-           var way = vgraph.entity(w.id);
-
-           if (way.tags.oneway === '-1') {
-             var action = actionReverse(way.id, {
-               reverseOneway: true
-             });
-             actions.push(action);
-             vgraph = action(vgraph);
+           function featureCollection(f) {
+             f.features = f.features.map(feature);
+             return f;

            }
            }

-         }); // STEP 4:  Split ways on key vertices

 
 

-         var origCount = osmEntity.id.next.way;
-         vertices.forEach(function (v) {
-           // This is an odd way to do it, but we need to find all the ways that
-           // will be split here, then split them one at a time to ensure that these
-           // actions can be replayed on the main graph exactly in the same order.
-           // (It is unintuitive, but the order of ways returned from graph.parentWays()
-           // is arbitrary, depending on how the main graph and vgraph were built)
-           var splitAll = actionSplit([v.id]).keepHistoryOn('first');
+           function geometryCollection(g) {
+             g.geometries = g.geometries.map(geometry);
+             return g;
+           }

 
 

-           if (!splitAll.disabled(vgraph)) {
-             splitAll.ways(vgraph).forEach(function (way) {
-               var splitOne = actionSplit([v.id]).limitWays([way.id]).keepHistoryOn('first');
-               actions.push(splitOne);
-               vgraph = splitOne(vgraph);
-             });
+           if (!t) {
+             return t;

            }
            }

-         }); // In here is where we should also split the intersection at nearby junction.
-         //   for https://github.com/mapbox/iD-internal/issues/31
-         // nearbyVertices.forEach(function(v) {
-         // });
-         // Reasons why we reset the way id count here:
-         //  1. Continuity with way ids created by the splits so that we can replay
-         //     these actions later if the user decides to create a turn restriction
-         //  2. Avoids churning way ids just by hovering over a vertex
-         //     and displaying the turn restriction editor

 
 

-         osmEntity.id.next.way = origCount; // STEP 5:  Update arrays to point to vgraph entities
+           switch (t.type) {
+             case "Feature":
+               return feature(t);

 
 

-         vertexIds = vertices.map(function (v) {
-           return v.id;
-         });
-         vertices = [];
-         ways = [];
-         vertexIds.forEach(function (id) {
-           var vertex = vgraph.entity(id);
-           var parents = vgraph.parentWays(vertex);
-           vertices.push(vertex);
-           ways = ways.concat(parents);
-         });
-         vertices = utilArrayUniq(vertices);
-         ways = utilArrayUniq(ways);
-         vertexIds = vertices.map(function (v) {
-           return v.id;
-         });
-         wayIds = ways.map(function (w) {
-           return w.id;
-         }); // STEP 6:  Update the ways with some metadata that will be useful for
-         // walking the intersection graph later and rendering turn arrows.
+             case "GeometryCollection":
+               return geometryCollection(t);

 
 

-         function withMetadata(way, vertexIds) {
-           var __oneWay = way.isOneWay(); // which affixes are key vertices?
+             case "FeatureCollection":
+               return featureCollection(t);

 
 

+             case "Point":
+             case "LineString":
+             case "Polygon":
+             case "MultiPoint":
+             case "MultiPolygon":
+             case "MultiLineString":
+               return geometry(t);

 
 

-           var __first = vertexIds.indexOf(way.first()) !== -1;
+             default:
+               return t;
+           }
+         }

 
 

-           var __last = vertexIds.indexOf(way.last()) !== -1; // what roles is this way eligible for?
+         geojsonPrecision.exports = parse;
+         geojsonPrecision.exports.parse = parse;
+       })();

 
 

+       var precision = geojsonPrecision.exports;

 
 

-           var __via = __first && __last;
+       var $$d = _export;
+       var fails$5 = fails$N;
+       var toObject = toObject$i;
+       var toPrimitive = toPrimitive$7;

 
 

-           var __from = __first && !__oneWay || __last;
+       var FORCED$3 = fails$5(function () {
+         return new Date(NaN).toJSON() !== null
+           || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;
+       });

 
 

-           var __to = __first || __last && !__oneWay;
+       // `Date.prototype.toJSON` method
+       // https://tc39.es/ecma262/#sec-date.prototype.tojson
+       $$d({ target: 'Date', proto: true, forced: FORCED$3 }, {
+         // eslint-disable-next-line no-unused-vars -- required for `.length`
+         toJSON: function toJSON(key) {
+           var O = toObject(this);
+           var pv = toPrimitive(O);
+           return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
+         }
+       });

 
 

-           return way.update({
-             __first: __first,
-             __last: __last,
-             __from: __from,
-             __via: __via,
-             __to: __to,
-             __oneWay: __oneWay
-           });
+       var $$c = _export;
+
+       // `URL.prototype.toJSON` method
+       // https://url.spec.whatwg.org/#dom-url-tojson
+       $$c({ target: 'URL', proto: true, enumerable: true }, {
+         toJSON: function toJSON() {
+           return URL.prototype.toString.call(this);

          }
          }

+       });

 
 

-         ways = [];
-         wayIds.forEach(function (id) {
-           var way = withMetadata(vgraph.entity(id), vertexIds);
-           vgraph = vgraph.replace(way);
-           ways.push(way);
-         }); // STEP 7:  Simplify - This is an iterative process where we:
-         //  1. Find trivial vertices with only 2 parents
-         //  2. trim off the leaf way from those vertices and remove from vgraph
+       function isObject$3(obj) {
+         return _typeof(obj) === 'object' && obj !== null;
+       }

 
 

-         var keepGoing;
-         var removeWayIds = [];
-         var removeVertexIds = [];
+       function forEach(obj, cb) {
+         if (Array.isArray(obj)) {
+           obj.forEach(cb);
+         } else if (isObject$3(obj)) {
+           Object.keys(obj).forEach(function (key) {
+             var val = obj[key];
+             cb(val, key);
+           });
+         }
+       }

 
 

-         do {
-           keepGoing = false;
-           checkVertices = vertexIds.slice();
+       function getTreeDepth(obj) {
+         var depth = 0;

 
 

-           for (i = 0; i < checkVertices.length; i++) {
-             var vertexId = checkVertices[i];
-             vertex = vgraph.hasEntity(vertexId);
+         if (Array.isArray(obj) || isObject$3(obj)) {
+           forEach(obj, function (val) {
+             if (Array.isArray(val) || isObject$3(val)) {
+               var tmpDepth = getTreeDepth(val);

 
 

-             if (!vertex) {
-               if (vertexIds.indexOf(vertexId) !== -1) {
-                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               if (tmpDepth > depth) {
+                 depth = tmpDepth;

                }
                }

-
-               removeVertexIds.push(vertexId);
-               continue;

              }
              }

+           });
+           return depth + 1;
+         }

 
 

-             parents = vgraph.parentWays(vertex);
+         return depth;
+       }

 
 

-             if (parents.length < 3) {
-               if (vertexIds.indexOf(vertexId) !== -1) {
-                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
-               }
-             }
+       function stringify(obj, options) {
+         options = options || {};
+         var indent = JSON.stringify([1], null, get(options, 'indent', 2)).slice(2, -3);
+         var addMargin = get(options, 'margins', false);
+         var addArrayMargin = get(options, 'arrayMargins', false);
+         var addObjectMargin = get(options, 'objectMargins', false);
+         var maxLength = indent === '' ? Infinity : get(options, 'maxLength', 80);
+         var maxNesting = get(options, 'maxNesting', Infinity);
+         return function _stringify(obj, currentIndent, reserved) {
+           if (obj && typeof obj.toJSON === 'function') {
+             obj = obj.toJSON();
+           }

 
 

-             if (parents.length === 2) {
-               // vertex with 2 parents is trivial
-               var a = parents[0];
-               var b = parents[1];
-               var aIsLeaf = a && !a.__via;
-               var bIsLeaf = b && !b.__via;
-               var leaf, survivor;
+           var string = JSON.stringify(obj);

 
 

-               if (aIsLeaf && !bIsLeaf) {
-                 leaf = a;
-                 survivor = b;
-               } else if (!aIsLeaf && bIsLeaf) {
-                 leaf = b;
-                 survivor = a;
-               }
+           if (string === undefined) {
+             return string;
+           }

 
 

-               if (leaf && survivor) {
-                 survivor = withMetadata(survivor, vertexIds); // update survivor way
+           var length = maxLength - currentIndent.length - reserved;
+           var treeDepth = getTreeDepth(obj);

 
 

-                 vgraph = vgraph.replace(survivor).remove(leaf); // update graph
+           if (treeDepth <= maxNesting && string.length <= length) {
+             var prettified = prettify(string, {
+               addMargin: addMargin,
+               addArrayMargin: addArrayMargin,
+               addObjectMargin: addObjectMargin
+             });

 
 

-                 removeWayIds.push(leaf.id);
-                 keepGoing = true;
-               }
+             if (prettified.length <= length) {
+               return prettified;

              }
              }

+           }

 
 

-             parents = vgraph.parentWays(vertex);
+           if (isObject$3(obj)) {
+             var nextIndent = currentIndent + indent;
+             var items = [];
+             var delimiters;

 
 

-             if (parents.length < 2) {
-               // vertex is no longer a key vertex
-               if (vertexIds.indexOf(vertexId) !== -1) {
-                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+             var comma = function comma(array, index) {
+               return index === array.length - 1 ? 0 : 1;
+             };
+
+             if (Array.isArray(obj)) {
+               for (var index = 0; index < obj.length; index++) {
+                 items.push(_stringify(obj[index], nextIndent, comma(obj, index)) || 'null');

                }
 
                }
 

-               removeVertexIds.push(vertexId);
-               keepGoing = true;
+               delimiters = '[]';
+             } else {
+               Object.keys(obj).forEach(function (key, index, array) {
+                 var keyPart = JSON.stringify(key) + ': ';
+
+                 var value = _stringify(obj[key], nextIndent, keyPart.length + comma(array, index));
+
+                 if (value !== undefined) {
+                   items.push(keyPart + value);
+                 }
+               });
+               delimiters = '{}';

              }
 
              }
 

-             if (parents.length < 1) {
-               // vertex is no longer attached to anything
-               vgraph = vgraph.remove(vertex);
+             if (items.length > 0) {
+               return [delimiters[0], indent + items.join(',\n' + nextIndent), delimiters[1]].join('\n' + currentIndent);

              }
            }
              }
            }

-         } while (keepGoing);
-
-         vertices = vertices.filter(function (vertex) {
-           return removeVertexIds.indexOf(vertex.id) === -1;
-         }).map(function (vertex) {
-           return vgraph.entity(vertex.id);
-         });
-         ways = ways.filter(function (way) {
-           return removeWayIds.indexOf(way.id) === -1;
-         }).map(function (way) {
-           return vgraph.entity(way.id);
-         }); // OK!  Here is our intersection..

 
 

-         var intersection = {
-           graph: vgraph,
-           actions: actions,
-           vertices: vertices,
-           ways: ways
-         }; // Get all the valid turns through this intersection given a starting way id.
-         // This operates on the virtual graph for everything.
-         //
-         // Basically, walk through all possible paths from starting way,
-         //   honoring the existing turn restrictions as we go (watch out for loops!)
-         //
-         // For each path found, generate and return a `osmTurn` datastructure.
-         //
+           return string;
+         }(obj, '', 0);
+       } // Note: This regex matches even invalid JSON strings, but since we’re
+       // working on the output of `JSON.stringify` we know that only valid strings
+       // are present (unless the user supplied a weird `options.indent` but in
+       // that case we don’t care since the output would be invalid anyway).

 
 

-         intersection.turns = function (fromWayId, maxViaWay) {
-           if (!fromWayId) return [];
-           if (!maxViaWay) maxViaWay = 0;
-           var vgraph = intersection.graph;
-           var keyVertexIds = intersection.vertices.map(function (v) {
-             return v.id;
-           });
-           var start = vgraph.entity(fromWayId);
-           if (!start || !(start.__from || start.__via)) return []; // maxViaWay=0   from-*-to              (0 vias)
-           // maxViaWay=1   from-*-via-*-to        (1 via max)
-           // maxViaWay=2   from-*-via-*-via-*-to  (2 vias max)

 
 

-           var maxPathLength = maxViaWay * 2 + 3;
-           var turns = [];
-           step(start);
-           return turns; // traverse the intersection graph and find all the valid paths
+       var stringOrChar = /("(?:[^\\"]|\\.)*")|[:,\][}{]/g;

 
 

-           function step(entity, currPath, currRestrictions, matchedRestriction) {
-             currPath = (currPath || []).slice(); // shallow copy
+       function prettify(string, options) {
+         options = options || {};
+         var tokens = {
+           '{': '{',
+           '}': '}',
+           '[': '[',
+           ']': ']',
+           ',': ', ',
+           ':': ': '
+         };

 
 

-             if (currPath.length >= maxPathLength) return;
-             currPath.push(entity.id);
-             currRestrictions = (currRestrictions || []).slice(); // shallow copy
+         if (options.addMargin || options.addObjectMargin) {
+           tokens['{'] = '{ ';
+           tokens['}'] = ' }';
+         }

 
 

-             var i, j;
+         if (options.addMargin || options.addArrayMargin) {
+           tokens['['] = '[ ';
+           tokens[']'] = ' ]';
+         }

 
 

-             if (entity.type === 'node') {
-               var parents = vgraph.parentWays(entity);
-               var nextWays = []; // which ways can we step into?
+         return string.replace(stringOrChar, function (match, string) {
+           return string ? match : tokens[match];
+         });
+       }

 
 

-               for (i = 0; i < parents.length; i++) {
-                 var way = parents[i]; // if next way is a oneway incoming to this vertex, skip
+       function get(options, name, defaultValue) {
+         return name in options ? options[name] : defaultValue;
+       }

 
 

-                 if (way.__oneWay && way.nodes[0] !== entity.id) continue; // if we have seen it before (allowing for an initial u-turn), skip
+       var jsonStringifyPrettyCompact = stringify;

 
 

-                 if (currPath.indexOf(way.id) !== -1 && currPath.length >= 3) continue; // Check all "current" restrictions (where we've already walked the `FROM`)
+       var _default = /*#__PURE__*/function () {
+         // constructor
+         //
+         // `fc`  Optional FeatureCollection of known features
+         //
+         // Optionally pass a GeoJSON FeatureCollection of known features which we can refer to later.
+         // Each feature must have a filename-like `id`, for example: `something.geojson`
+         //
+         // {
+         //   "type": "FeatureCollection"
+         //   "features": [
+         //     {
+         //       "type": "Feature",
+         //       "id": "philly_metro.geojson",
+         //       "properties": { … },
+         //       "geometry": { … }
+         //     }
+         //   ]
+         // }
+         function _default(fc) {
+           var _this = this;

 
 

-                 var restrict = null;
+           _classCallCheck$1(this, _default);

 
 

-                 for (j = 0; j < currRestrictions.length; j++) {
-                   var restriction = currRestrictions[j];
-                   var f = restriction.memberByRole('from');
-                   var v = restriction.membersByRole('via');
-                   var t = restriction.memberByRole('to');
-                   var isOnly = /^only_/.test(restriction.tags.restriction); // Does the current path match this turn restriction?
+           // The _cache retains resolved features, so if you ask for the same thing multiple times
+           // we don't repeat the expensive resolving/clipping operations.
+           //
+           // Each feature has a stable identifier that is used as the cache key.
+           // The identifiers look like:
+           // - for point locations, the stringified point:          e.g. '[8.67039,49.41882]'
+           // - for geojson locations, the geojson id:               e.g. 'de-hamburg.geojson'
+           // - for countrycoder locations, feature.id property:     e.g. 'Q2'  (countrycoder uses Wikidata identifiers)
+           // - for aggregated locationSets, +[include]-[exclude]:   e.g '+[Q2]-[Q18,Q27611]'
+           this._cache = {}; // When strict mode = true, throw on invalid locations or locationSets.
+           // When strict mode = false, return `null` for invalid locations or locationSets.

 
 

-                   var matchesFrom = f.id === fromWayId;
-                   var matchesViaTo = false;
-                   var isAlongOnlyPath = false;
+           this._strict = true; // process input FeatureCollection

 
 

-                   if (t.id === way.id) {
-                     // match TO
-                     if (v.length === 1 && v[0].type === 'node') {
-                       // match VIA node
-                       matchesViaTo = v[0].id === entity.id && (matchesFrom && currPath.length === 2 || !matchesFrom && currPath.length > 2);
-                     } else {
-                       // match all VIA ways
-                       var pathVias = [];
+           if (fc && fc.type === 'FeatureCollection' && Array.isArray(fc.features)) {
+             fc.features.forEach(function (feature) {
+               feature.properties = feature.properties || {};
+               var props = feature.properties; // Get `id` from either `id` or `properties`

 
 

-                       for (k = 2; k < currPath.length; k += 2) {
-                         // k = 2 skips FROM
-                         pathVias.push(currPath[k]); // (path goes way-node-way...)
-                       }
+               var id = feature.id || props.id;
+               if (!id || !/^\S+\.geojson$/i.test(id)) return; // Ensure `id` exists and is lowercase

 
 

-                       var restrictionVias = [];
+               id = id.toLowerCase();
+               feature.id = id;
+               props.id = id; // Ensure `area` property exists

 
 

-                       for (k = 0; k < v.length; k++) {
-                         if (v[k].type === 'way') {
-                           restrictionVias.push(v[k].id);
-                         }
-                       }
+               if (!props.area) {
+                 var area = geojsonArea.geometry(feature.geometry) / 1e6; // m² to km²

 
 

-                       var diff = utilArrayDifference(pathVias, restrictionVias);
-                       matchesViaTo = !diff.length;
-                     }
-                   } else if (isOnly) {
-                     for (k = 0; k < v.length; k++) {
-                       // way doesn't match TO, but is one of the via ways along the path of an "only"
-                       if (v[k].type === 'way' && v[k].id === way.id) {
-                         isAlongOnlyPath = true;
-                         break;
-                       }
-                     }
-                   }
+                 props.area = Number(area.toFixed(2));
+               }

 
 

-                   if (matchesViaTo) {
-                     if (isOnly) {
-                       restrict = {
-                         id: restriction.id,
-                         direct: matchesFrom,
-                         from: f.id,
-                         only: true,
-                         end: true
-                       };
-                     } else {
-                       restrict = {
-                         id: restriction.id,
-                         direct: matchesFrom,
-                         from: f.id,
-                         no: true,
-                         end: true
-                       };
-                     }
-                   } else {
-                     // indirect - caused by a different nearby restriction
-                     if (isAlongOnlyPath) {
-                       restrict = {
-                         id: restriction.id,
-                         direct: false,
-                         from: f.id,
-                         only: true,
-                         end: false
-                       };
-                     } else if (isOnly) {
-                       restrict = {
-                         id: restriction.id,
-                         direct: false,
-                         from: f.id,
-                         no: true,
-                         end: true
-                       };
-                     }
-                   } // stop looking if we find a "direct" restriction (matching FROM, VIA, TO)
+               _this._cache[id] = feature;
+             });
+           } // Replace CountryCoder world geometry to be a polygon covering the world.

 
 
 
 

-                   if (restrict && restrict.direct) break;
-                 }
+           var world = _cloneDeep(feature$1('Q2'));

 
 

-                 nextWays.push({
-                   way: way,
-                   restrict: restrict
-                 });
-               }
+           world.geometry = {
+             type: 'Polygon',
+             coordinates: [[[-180, -90], [180, -90], [180, 90], [-180, 90], [-180, -90]]]
+           };
+           world.id = 'Q2';
+           world.properties.id = 'Q2';
+           world.properties.area = geojsonArea.geometry(world.geometry) / 1e6; // m² to km²

 
 

-               nextWays.forEach(function (nextWay) {
-                 step(nextWay.way, currPath, currRestrictions, nextWay.restrict);
-               });
-             } else {
-               // entity.type === 'way'
-               if (currPath.length >= 3) {
-                 // this is a "complete" path..
-                 var turnPath = currPath.slice(); // shallow copy
-                 // an indirect restriction - only include the partial path (starting at FROM)
+           this._cache.Q2 = world;
+         } // validateLocation
+         // `location`  The location to validate
+         //
+         // Pass a `location` value to validate
+         //
+         // Returns a result like:
+         //   {
+         //     type:     'point', 'geojson', or 'countrycoder'
+         //     location:  the queried location
+         //     id:        the stable identifier for the feature
+         //   }
+         // or `null` if the location is invalid
+         //

 
 

-                 if (matchedRestriction && matchedRestriction.direct === false) {
-                   for (i = 0; i < turnPath.length; i++) {
-                     if (turnPath[i] === matchedRestriction.from) {
-                       turnPath = turnPath.slice(i);
-                       break;
-                     }
-                   }
-                 }

 
 

-                 var turn = pathToTurn(turnPath);
+         _createClass$1(_default, [{
+           key: "validateLocation",
+           value: function validateLocation(location) {
+             if (Array.isArray(location) && (location.length === 2 || location.length === 3)) {
+               // [lon, lat] or [lon, lat, radius] point?
+               var lon = location[0];
+               var lat = location[1];
+               var radius = location[2];

 
 

-                 if (turn) {
-                   if (matchedRestriction) {
-                     turn.restrictionID = matchedRestriction.id;
-                     turn.no = matchedRestriction.no;
-                     turn.only = matchedRestriction.only;
-                     turn.direct = matchedRestriction.direct;
-                   }
+               if (Number.isFinite(lon) && lon >= -180 && lon <= 180 && Number.isFinite(lat) && lat >= -90 && lat <= 90 && (location.length === 2 || Number.isFinite(radius) && radius > 0)) {
+                 var id = '[' + location.toString() + ']';
+                 return {
+                   type: 'point',
+                   location: location,
+                   id: id
+                 };
+               }
+             } else if (typeof location === 'string' && /^\S+\.geojson$/i.test(location)) {
+               // a .geojson filename?
+               var _id = location.toLowerCase();

 
 

-                   turns.push(osmTurn(turn));
-                 }
+               if (this._cache[_id]) {
+                 return {
+                   type: 'geojson',
+                   location: location,
+                   id: _id
+                 };
+               }
+             } else if (typeof location === 'string' || typeof location === 'number') {
+               // a country-coder value?
+               var feature = feature$1(location);

 
 

-                 if (currPath[0] === currPath[2]) return; // if we made a u-turn - stop here
+               if (feature) {
+                 // Use wikidata QID as the identifier, since that seems to be the one
+                 // property that everything in CountryCoder is guaranteed to have.
+                 var _id2 = feature.properties.wikidata;
+                 return {
+                   type: 'countrycoder',
+                   location: location,
+                   id: _id2
+                 };

                }
                }

+             }

 
 

-               if (matchedRestriction && matchedRestriction.end) return; // don't advance any further
-               // which nodes can we step into?
+             if (this._strict) {
+               throw new Error("validateLocation:  Invalid location: \"".concat(location, "\"."));
+             } else {
+               return null;
+             }
+           } // resolveLocation
+           // `location`  The location to resolve
+           //
+           // Pass a `location` value to resolve
+           //
+           // Returns a result like:
+           //   {
+           //     type:      'point', 'geojson', or 'countrycoder'
+           //     location:  the queried location
+           //     id:        a stable identifier for the feature
+           //     feature:   the resolved GeoJSON feature
+           //   }
+           //  or `null` if the location is invalid
+           //

 
 

-               var n1 = vgraph.entity(entity.first());
-               var n2 = vgraph.entity(entity.last());
-               var dist = geoSphericalDistance(n1.loc, n2.loc);
-               var nextNodes = [];
+         }, {
+           key: "resolveLocation",
+           value: function resolveLocation(location) {
+             var valid = this.validateLocation(location);
+             if (!valid) return null;
+             var id = valid.id; // Return a result from cache if we can

 
 

-               if (currPath.length > 1) {
-                 if (dist > maxDistance) return; // the next node is too far
+             if (this._cache[id]) {
+               return Object.assign(valid, {
+                 feature: this._cache[id]
+               });
+             } // A [lon,lat] coordinate pair?

 
 

-                 if (!entity.__via) return; // this way is a leaf / can't be a via
-               }

 
 

-               if (!entity.__oneWay && // bidirectional..
-               keyVertexIds.indexOf(n1.id) !== -1 && // key vertex..
-               currPath.indexOf(n1.id) === -1) {
-                 // haven't seen it yet..
-                 nextNodes.push(n1); // can advance to first node
-               }
+             if (valid.type === 'point') {
+               var lon = location[0];
+               var lat = location[1];
+               var radius = location[2] || 25; // km

 
 

-               if (keyVertexIds.indexOf(n2.id) !== -1 && // key vertex..
-               currPath.indexOf(n2.id) === -1) {
-                 // haven't seen it yet..
-                 nextNodes.push(n2); // can advance to last node
-               }
+               var EDGES = 10;
+               var PRECISION = 3;
+               var area = Math.PI * radius * radius;
+               var feature = this._cache[id] = precision({
+                 type: 'Feature',
+                 id: id,
+                 properties: {
+                   id: id,
+                   area: Number(area.toFixed(2))
+                 },
+                 geometry: circleToPolygon([lon, lat], radius * 1000, EDGES) // km to m

 
 

-               nextNodes.forEach(function (nextNode) {
-                 // gather restrictions FROM this way
-                 var fromRestrictions = vgraph.parentRelations(entity).filter(function (r) {
-                   if (!r.isRestriction()) return false;
-                   var f = r.memberByRole('from');
-                   if (!f || f.id !== entity.id) return false;
-                   var isOnly = /^only_/.test(r.tags.restriction);
-                   if (!isOnly) return true; // `only_` restrictions only matter along the direction of the VIA - #4849
+               }, PRECISION);
+               return Object.assign(valid, {
+                 feature: feature
+               }); // A .geojson filename?
+             } else if (valid.type === 'geojson') ; else if (valid.type === 'countrycoder') {
+               var _feature = _cloneDeep(feature$1(id));

 
 

-                   var isOnlyVia = false;
-                   var v = r.membersByRole('via');
+               var props = _feature.properties; // -> This block of code is weird and requires some explanation. <-
+               // CountryCoder includes higher level features which are made up of members.
+               // These features don't have their own geometry, but CountryCoder provides an
+               //   `aggregateFeature` method to combine these members into a MultiPolygon.
+               // In the past, Turf/JSTS/martinez could not handle the aggregated features,
+               //   so we'd iteratively union them all together.  (this was slow)
+               // But now mfogel/polygon-clipping handles these MultiPolygons like a boss.
+               // This approach also has the benefit of removing all the internal boaders and
+               //   simplifying the regional polygons a lot.

 
 

-                   if (v.length === 1 && v[0].type === 'node') {
-                     // via node
-                     isOnlyVia = v[0].id === nextNode.id;
-                   } else {
-                     // via way(s)
-                     for (var i = 0; i < v.length; i++) {
-                       if (v[i].type !== 'way') continue;
-                       var viaWay = vgraph.entity(v[i].id);
+               if (Array.isArray(props.members)) {
+                 var aggregate = aggregateFeature(id);
+                 aggregate.geometry.coordinates = _clip([aggregate], 'UNION').geometry.coordinates;
+                 _feature.geometry = aggregate.geometry;
+               } // Ensure `area` property exists

 
 

-                       if (viaWay.first() === nextNode.id || viaWay.last() === nextNode.id) {
-                         isOnlyVia = true;
-                         break;
-                       }
-                     }
-                   }

 
 

-                   return isOnlyVia;
-                 });
-                 step(nextNode, currPath, currRestrictions.concat(fromRestrictions), false);
-               });
-             }
-           } // assumes path is alternating way-node-way of odd length
+               if (!props.area) {
+                 var _area = geojsonArea.geometry(_feature.geometry) / 1e6; // m² to km²

 
 
 
 

-           function pathToTurn(path) {
-             if (path.length < 3) return;
-             var fromWayId, fromNodeId, fromVertexId;
-             var toWayId, toNodeId, toVertexId;
-             var viaWayIds, viaNodeId, isUturn;
-             fromWayId = path[0];
-             toWayId = path[path.length - 1];
+                 props.area = Number(_area.toFixed(2));
+               } // Ensure `id` property exists

 
 

-             if (path.length === 3 && fromWayId === toWayId) {
-               // u turn
-               var way = vgraph.entity(fromWayId);
-               if (way.__oneWay) return null;
-               isUturn = true;
-               viaNodeId = fromVertexId = toVertexId = path[1];
-               fromNodeId = toNodeId = adjacentNode(fromWayId, viaNodeId);
-             } else {
-               isUturn = false;
-               fromVertexId = path[1];
-               fromNodeId = adjacentNode(fromWayId, fromVertexId);
-               toVertexId = path[path.length - 2];
-               toNodeId = adjacentNode(toWayId, toVertexId);

 
 

-               if (path.length === 3) {
-                 viaNodeId = path[1];
-               } else {
-                 viaWayIds = path.filter(function (entityId) {
-                   return entityId[0] === 'w';
-                 });
-                 viaWayIds = viaWayIds.slice(1, viaWayIds.length - 1); // remove first, last
-               }
+               _feature.id = id;
+               props.id = id;
+               this._cache[id] = _feature;
+               return Object.assign(valid, {
+                 feature: _feature
+               });

              }
 
              }
 

-             return {
-               key: path.join('_'),
-               path: path,
-               from: {
-                 node: fromNodeId,
-                 way: fromWayId,
-                 vertex: fromVertexId
-               },
-               via: {
-                 node: viaNodeId,
-                 ways: viaWayIds
-               },
-               to: {
-                 node: toNodeId,
-                 way: toWayId,
-                 vertex: toVertexId
-               },
-               u: isUturn
-             };
-
-             function adjacentNode(wayId, affixId) {
-               var nodes = vgraph.entity(wayId).nodes;
-               return affixId === nodes[0] ? nodes[1] : nodes[nodes.length - 2];
+             if (this._strict) {
+               throw new Error("resolveLocation:  Couldn't resolve location \"".concat(location, "\"."));
+             } else {
+               return null;

              }
              }

-           }
-         };
-
-         return intersection;
-       }
-       function osmInferRestriction(graph, turn, projection) {
-         var fromWay = graph.entity(turn.from.way);
-         var fromNode = graph.entity(turn.from.node);
-         var fromVertex = graph.entity(turn.from.vertex);
-         var toWay = graph.entity(turn.to.way);
-         var toNode = graph.entity(turn.to.node);
-         var toVertex = graph.entity(turn.to.vertex);
-         var fromOneWay = fromWay.tags.oneway === 'yes';
-         var toOneWay = toWay.tags.oneway === 'yes';
-         var angle = (geoAngle(fromVertex, fromNode, projection) - geoAngle(toVertex, toNode, projection)) * 180 / Math.PI;
+           } // validateLocationSet
+           // `locationSet`  the locationSet to validate
+           //
+           // Pass a locationSet Object to validate like:
+           //   {
+           //     include: [ Array of locations ],
+           //     exclude: [ Array of locations ]
+           //   }
+           //
+           // Returns a result like:
+           //   {
+           //     type:         'locationset'
+           //     locationSet:  the queried locationSet
+           //     id:           the stable identifier for the feature
+           //   }
+           // or `null` if the locationSet is invalid
+           //

 
 

-         while (angle < 0) {
-           angle += 360;
-         }
+         }, {
+           key: "validateLocationSet",
+           value: function validateLocationSet(locationSet) {
+             locationSet = locationSet || {};
+             var validator = this.validateLocation.bind(this);
+             var include = (locationSet.include || []).map(validator).filter(Boolean);
+             var exclude = (locationSet.exclude || []).map(validator).filter(Boolean);

 
 

-         if (fromNode === toNode) return 'no_u_turn';
-         if ((angle < 23 || angle > 336) && fromOneWay && toOneWay) return 'no_u_turn'; // wider tolerance for u-turn if both ways are oneway
+             if (!include.length) {
+               if (this._strict) {
+                 throw new Error("validateLocationSet:  LocationSet includes nothing.");
+               } else {
+                 // non-strict mode, replace an empty locationSet with one that includes "the world"
+                 locationSet.include = ['Q2'];
+                 include = [{
+                   type: 'countrycoder',
+                   location: 'Q2',
+                   id: 'Q2'
+                 }];
+               }
+             } // Generate stable identifier

 
 

-         if ((angle < 40 || angle > 319) && fromOneWay && toOneWay && turn.from.vertex !== turn.to.vertex) return 'no_u_turn'; // even wider tolerance for u-turn if there is a via way (from !== to)

 
 

-         if (angle < 158) return 'no_right_turn';
-         if (angle > 202) return 'no_left_turn';
-         return 'no_straight_on';
-       }
+             include.sort(_sortLocations);
+             var id = '+[' + include.map(function (d) {
+               return d.id;
+             }).join(',') + ']';

 
 

-       function actionMergePolygon(ids, newRelationId) {
-         function groupEntities(graph) {
-           var entities = ids.map(function (id) {
-             return graph.entity(id);
-           });
-           var geometryGroups = utilArrayGroupBy(entities, function (entity) {
-             if (entity.type === 'way' && entity.isClosed()) {
-               return 'closedWay';
-             } else if (entity.type === 'relation' && entity.isMultipolygon()) {
-               return 'multipolygon';
-             } else {
-               return 'other';
+             if (exclude.length) {
+               exclude.sort(_sortLocations);
+               id += '-[' + exclude.map(function (d) {
+                 return d.id;
+               }).join(',') + ']';

              }
              }

-           });
-           return Object.assign({
-             closedWay: [],
-             multipolygon: [],
-             other: []
-           }, geometryGroups);
-         }

 
 

-         var action = function action(graph) {
-           var entities = groupEntities(graph); // An array representing all the polygons that are part of the multipolygon.
+             return {
+               type: 'locationset',
+               locationSet: locationSet,
+               id: id
+             };
+           } // resolveLocationSet
+           // `locationSet`  the locationSet to resolve
+           //
+           // Pass a locationSet Object to validate like:
+           //   {
+           //     include: [ Array of locations ],
+           //     exclude: [ Array of locations ]
+           //   }
+           //
+           // Returns a result like:
+           //   {
+           //     type:         'locationset'
+           //     locationSet:  the queried locationSet
+           //     id:           the stable identifier for the feature
+           //     feature:      the resolved GeoJSON feature
+           //   }
+           // or `null` if the locationSet is invalid

            //
            //

-           // Each element is itself an array of objects with an id property, and has a
-           // locs property which is an array of the locations forming the polygon.

 
 

-           var polygons = entities.multipolygon.reduce(function (polygons, m) {
-             return polygons.concat(osmJoinWays(m.members, graph));
-           }, []).concat(entities.closedWay.map(function (d) {
-             var member = [{
-               id: d.id
-             }];
-             member.nodes = graph.childNodes(d);
-             return member;
-           })); // contained is an array of arrays of boolean values,
-           // where contained[j][k] is true iff the jth way is
-           // contained by the kth way.
+         }, {
+           key: "resolveLocationSet",
+           value: function resolveLocationSet(locationSet) {
+             locationSet = locationSet || {};
+             var valid = this.validateLocationSet(locationSet);
+             if (!valid) return null;
+             var id = valid.id; // Return a result from cache if we can

 
 

-           var contained = polygons.map(function (w, i) {
-             return polygons.map(function (d, n) {
-               if (i === n) return null;
-               return geoPolygonContainsPolygon(d.nodes.map(function (n) {
-                 return n.loc;
-               }), w.nodes.map(function (n) {
-                 return n.loc;
-               }));
-             });
-           }); // Sort all polygons as either outer or inner ways
+             if (this._cache[id]) {
+               return Object.assign(valid, {
+                 feature: this._cache[id]
+               });
+             }

 
 

-           var members = [];
-           var outer = true;
+             var resolver = this.resolveLocation.bind(this);
+             var includes = (locationSet.include || []).map(resolver).filter(Boolean);
+             var excludes = (locationSet.exclude || []).map(resolver).filter(Boolean); // Return quickly if it's a single included location..

 
 

-           while (polygons.length) {
-             extractUncontained(polygons);
-             polygons = polygons.filter(isContained);
-             contained = contained.filter(isContained).map(filterContained);
-           }
+             if (includes.length === 1 && excludes.length === 0) {
+               return Object.assign(valid, {
+                 feature: includes[0].feature
+               });
+             } // Calculate unions

 
 

-           function isContained(d, i) {
-             return contained[i].some(function (val) {
-               return val;
-             });
-           }

 
 

-           function filterContained(d) {
-             return d.filter(isContained);
-           }
+             var includeGeoJSON = _clip(includes.map(function (d) {
+               return d.feature;
+             }), 'UNION');

 
 

-           function extractUncontained(polygons) {
-             polygons.forEach(function (d, i) {
-               if (!isContained(d, i)) {
-                 d.forEach(function (member) {
-                   members.push({
-                     type: 'way',
-                     id: member.id,
-                     role: outer ? 'outer' : 'inner'
-                   });
-                 });
-               }
-             });
-             outer = !outer;
-           } // Move all tags to one relation
+             var excludeGeoJSON = _clip(excludes.map(function (d) {
+               return d.feature;
+             }), 'UNION'); // Calculate difference, update `area` and return result

 
 
 
 

-           var relation = entities.multipolygon[0] || osmRelation({
-             id: newRelationId,
-             tags: {
-               type: 'multipolygon'
-             }
-           });
-           entities.multipolygon.slice(1).forEach(function (m) {
-             relation = relation.mergeTags(m.tags);
-             graph = graph.remove(m);
-           });
-           entities.closedWay.forEach(function (way) {
-             function isThisOuter(m) {
-               return m.id === way.id && m.role !== 'inner';
-             }
+             var resultGeoJSON = excludeGeoJSON ? _clip([includeGeoJSON, excludeGeoJSON], 'DIFFERENCE') : includeGeoJSON;
+             var area = geojsonArea.geometry(resultGeoJSON.geometry) / 1e6; // m² to km²

 
 

-             if (members.some(isThisOuter)) {
-               relation = relation.mergeTags(way.tags);
-               graph = graph.replace(way.update({
-                 tags: {}
-               }));
-             }
-           });
-           return graph.replace(relation.update({
-             members: members,
-             tags: utilObjectOmit(relation.tags, ['area'])
-           }));
-         };
+             resultGeoJSON.id = id;
+             resultGeoJSON.properties = {
+               id: id,
+               area: Number(area.toFixed(2))
+             };
+             this._cache[id] = resultGeoJSON;
+             return Object.assign(valid, {
+               feature: resultGeoJSON
+             });
+           } // strict
+           //

 
 

-         action.disabled = function (graph) {
-           var entities = groupEntities(graph);
+         }, {
+           key: "strict",
+           value: function strict(val) {
+             if (val === undefined) {
+               // get
+               return this._strict;
+             } else {
+               // set
+               this._strict = val;
+               return this;
+             }
+           } // cache
+           // convenience method to access the internal cache

 
 

-           if (entities.other.length > 0 || entities.closedWay.length + entities.multipolygon.length < 2) {
-             return 'not_eligible';
-           }
+         }, {
+           key: "cache",
+           value: function cache() {
+             return this._cache;
+           } // stringify
+           // convenience method to prettyStringify the given object

 
 

-           if (!entities.multipolygon.every(function (r) {
-             return r.isComplete(graph);
-           })) {
-             return 'incomplete_relation';
+         }, {
+           key: "stringify",
+           value: function stringify(obj, options) {
+             return jsonStringifyPrettyCompact(obj, options);

            }
            }

+         }]);

 
 

-           if (!entities.multipolygon.length) {
-             var sharedMultipolygons = [];
-             entities.closedWay.forEach(function (way, i) {
-               if (i === 0) {
-                 sharedMultipolygons = graph.parentMultipolygons(way);
-               } else {
-                 sharedMultipolygons = utilArrayIntersection(sharedMultipolygons, graph.parentMultipolygons(way));
-               }
-             });
-             sharedMultipolygons = sharedMultipolygons.filter(function (relation) {
-               return relation.members.length === entities.closedWay.length;
-             });
+         return _default;
+       }(); // Wrap the mfogel/polygon-clipping library and return a GeoJSON feature.

 
 

-             if (sharedMultipolygons.length) {
-               // don't create a new multipolygon if it'd be redundant
-               return 'not_eligible';
-             }
-           } else if (entities.closedWay.some(function (way) {
-             return utilArrayIntersection(graph.parentMultipolygons(way), entities.multipolygon).length;
-           })) {
-             // don't add a way to a multipolygon again if it's already a member
-             return 'not_eligible';
+       function _clip(features, which) {
+         if (!Array.isArray(features) || !features.length) return null;
+         var fn = {
+           UNION: index.union,
+           DIFFERENCE: index.difference
+         }[which];
+         var args = features.map(function (feature) {
+           return feature.geometry.coordinates;
+         });
+         var coords = fn.apply(null, args);
+         return {
+           type: 'Feature',
+           properties: {},
+           geometry: {
+             type: whichType(coords),
+             coordinates: coords

            }
            }

-         };
+         }; // is this a Polygon or a MultiPolygon?

 
 

-         return action;
+         function whichType(coords) {
+           var a = Array.isArray(coords);
+           var b = a && Array.isArray(coords[0]);
+           var c = b && Array.isArray(coords[0][0]);
+           var d = c && Array.isArray(coords[0][0][0]);
+           return d ? 'MultiPolygon' : 'Polygon';
+         }

        }
 
        }
 

-       var UNSUPPORTED_Y$3 = regexpStickyHelpers.UNSUPPORTED_Y;
+       function _cloneDeep(obj) {
+         return JSON.parse(JSON.stringify(obj));
+       } // Sorting the location lists is ok because they end up unioned together.
+       // This sorting makes it possible to generate a deterministic id.

 
 

-       // `RegExp.prototype.flags` getter
-       // https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
-       if (descriptors && (/./g.flags != 'g' || UNSUPPORTED_Y$3)) {
-         objectDefineProperty.f(RegExp.prototype, 'flags', {
-           configurable: true,
-           get: regexpFlags
-         });
+
+       function _sortLocations(a, b) {
+         var rank = {
+           countrycoder: 1,
+           geojson: 2,
+           point: 3
+         };
+         var aRank = rank[a.type];
+         var bRank = rank[b.type];
+         return aRank > bRank ? 1 : aRank < bRank ? -1 : a.id.localeCompare(b.id);

        }
 
        }
 

-       var fastDeepEqual = function equal(a, b) {
-         if (a === b) return true;
+       var $$b = _export;

 
 

-         if (a && b && _typeof(a) == 'object' && _typeof(b) == 'object') {
-           if (a.constructor !== b.constructor) return false;
-           var length, i, keys;
+       // `Number.MAX_SAFE_INTEGER` constant
+       // https://tc39.es/ecma262/#sec-number.max_safe_integer
+       $$b({ target: 'Number', stat: true }, {
+         MAX_SAFE_INTEGER: 0x1FFFFFFFFFFFFF
+       });

 
 

-           if (Array.isArray(a)) {
-             length = a.length;
-             if (length != b.length) return false;
+       var aesJs = {exports: {}};

 
 

-             for (i = length; i-- !== 0;) {
-               if (!equal(a[i], b[i])) return false;
-             }
+       (function (module, exports) {
+         (function (root) {

 
 

-             return true;
+           function checkInt(value) {
+             return parseInt(value) === value;

            }
 
            }
 

-           if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
-           if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
-           if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
-           keys = Object.keys(a);
-           length = keys.length;
-           if (length !== Object.keys(b).length) return false;
+           function checkInts(arrayish) {
+             if (!checkInt(arrayish.length)) {
+               return false;
+             }

 
 

-           for (i = length; i-- !== 0;) {
-             if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
-           }
+             for (var i = 0; i < arrayish.length; i++) {
+               if (!checkInt(arrayish[i]) || arrayish[i] < 0 || arrayish[i] > 255) {
+                 return false;
+               }
+             }

 
 

-           for (i = length; i-- !== 0;) {
-             var key = keys[i];
-             if (!equal(a[key], b[key])) return false;
+             return true;

            }
 
            }
 

-           return true;
-         } // true if both NaN, false otherwise
-
-
-         return a !== a && b !== b;
-       };
-
-       // J. W. Hunt and M. D. McIlroy, An algorithm for differential buffer
-       // comparison, Bell Telephone Laboratories CSTR #41 (1976)
-       // http://www.cs.dartmouth.edu/~doug/
-       // https://en.wikipedia.org/wiki/Longest_common_subsequence_problem
-       //
-       // Expects two arrays, finds longest common sequence
-
-       function LCS(buffer1, buffer2) {
-         var equivalenceClasses = {};
+           function coerceArray(arg, copy) {
+             // ArrayBuffer view
+             if (arg.buffer && arg.name === 'Uint8Array') {
+               if (copy) {
+                 if (arg.slice) {
+                   arg = arg.slice();
+                 } else {
+                   arg = Array.prototype.slice.call(arg);
+                 }
+               }

 
 

-         for (var j = 0; j < buffer2.length; j++) {
-           var item = buffer2[j];
+               return arg;
+             } // It's an array; check it is a valid representation of a byte

 
 

-           if (equivalenceClasses[item]) {
-             equivalenceClasses[item].push(j);
-           } else {
-             equivalenceClasses[item] = [j];
-           }
-         }

 
 

-         var NULLRESULT = {
-           buffer1index: -1,
-           buffer2index: -1,
-           chain: null
-         };
-         var candidates = [NULLRESULT];
+             if (Array.isArray(arg)) {
+               if (!checkInts(arg)) {
+                 throw new Error('Array contains invalid value: ' + arg);
+               }

 
 

-         for (var i = 0; i < buffer1.length; i++) {
-           var _item = buffer1[i];
-           var buffer2indices = equivalenceClasses[_item] || [];
-           var r = 0;
-           var c = candidates[0];
+               return new Uint8Array(arg);
+             } // Something else, but behaves like an array (maybe a Buffer? Arguments?)

 
 

-           for (var jx = 0; jx < buffer2indices.length; jx++) {
-             var _j = buffer2indices[jx];
-             var s = void 0;

 
 

-             for (s = r; s < candidates.length; s++) {
-               if (candidates[s].buffer2index < _j && (s === candidates.length - 1 || candidates[s + 1].buffer2index > _j)) {
-                 break;
-               }
+             if (checkInt(arg.length) && checkInts(arg)) {
+               return new Uint8Array(arg);

              }
 
              }
 

-             if (s < candidates.length) {
-               var newCandidate = {
-                 buffer1index: i,
-                 buffer2index: _j,
-                 chain: candidates[s]
-               };
-
-               if (r === candidates.length) {
-                 candidates.push(c);
-               } else {
-                 candidates[r] = c;
-               }
+             throw new Error('unsupported array-like object');
+           }

 
 

-               r = s + 1;
-               c = newCandidate;
+           function createArray(length) {
+             return new Uint8Array(length);
+           }

 
 

-               if (r === candidates.length) {
-                 break; // no point in examining further (j)s
+           function copyArray(sourceArray, targetArray, targetStart, sourceStart, sourceEnd) {
+             if (sourceStart != null || sourceEnd != null) {
+               if (sourceArray.slice) {
+                 sourceArray = sourceArray.slice(sourceStart, sourceEnd);
+               } else {
+                 sourceArray = Array.prototype.slice.call(sourceArray, sourceStart, sourceEnd);

                }
              }
                }
              }

-           }
-
-           candidates[r] = c;
-         } // At this point, we know the LCS: it's in the reverse of the
-         // linked-list through .chain of candidates[candidates.length - 1].

 
 

+             targetArray.set(sourceArray, targetStart);
+           }

 
 

-         return candidates[candidates.length - 1];
-       } // We apply the LCS to build a 'comm'-style picture of the
-       // offsets and lengths of mismatched chunks in the input
-       // buffers. This is used by diff3MergeRegions.
+           var convertUtf8 = function () {
+             function toBytes(text) {
+               var result = [],
+                   i = 0;
+               text = encodeURI(text);

 
 

+               while (i < text.length) {
+                 var c = text.charCodeAt(i++); // if it is a % sign, encode the following 2 bytes as a hex value

 
 

-       function diffIndices(buffer1, buffer2) {
-         var lcs = LCS(buffer1, buffer2);
-         var result = [];
-         var tail1 = buffer1.length;
-         var tail2 = buffer2.length;
+                 if (c === 37) {
+                   result.push(parseInt(text.substr(i, 2), 16));
+                   i += 2; // otherwise, just the actual byte
+                 } else {
+                   result.push(c);
+                 }
+               }

 
 

-         for (var candidate = lcs; candidate !== null; candidate = candidate.chain) {
-           var mismatchLength1 = tail1 - candidate.buffer1index - 1;
-           var mismatchLength2 = tail2 - candidate.buffer2index - 1;
-           tail1 = candidate.buffer1index;
-           tail2 = candidate.buffer2index;
+               return coerceArray(result);
+             }

 
 

-           if (mismatchLength1 || mismatchLength2) {
-             result.push({
-               buffer1: [tail1 + 1, mismatchLength1],
-               buffer1Content: buffer1.slice(tail1 + 1, tail1 + 1 + mismatchLength1),
-               buffer2: [tail2 + 1, mismatchLength2],
-               buffer2Content: buffer2.slice(tail2 + 1, tail2 + 1 + mismatchLength2)
-             });
-           }
-         }
+             function fromBytes(bytes) {
+               var result = [],
+                   i = 0;

 
 

-         result.reverse();
-         return result;
-       } // We apply the LCS to build a JSON representation of a
-       // independently derived from O, returns a fairly complicated
-       // internal representation of merge decisions it's taken. The
-       // interested reader may wish to consult
-       //
-       // Sanjeev Khanna, Keshav Kunal, and Benjamin C. Pierce.
-       // 'A Formal Investigation of ' In Arvind and Prasad,
-       // editors, Foundations of Software Technology and Theoretical
-       // Computer Science (FSTTCS), December 2007.
-       //
-       // (http://www.cis.upenn.edu/~bcpierce/papers/diff3-short.pdf)
-       //
+               while (i < bytes.length) {
+                 var c = bytes[i];

 
 

+                 if (c < 128) {
+                   result.push(String.fromCharCode(c));
+                   i++;
+                 } else if (c > 191 && c < 224) {
+                   result.push(String.fromCharCode((c & 0x1f) << 6 | bytes[i + 1] & 0x3f));
+                   i += 2;
+                 } else {
+                   result.push(String.fromCharCode((c & 0x0f) << 12 | (bytes[i + 1] & 0x3f) << 6 | bytes[i + 2] & 0x3f));
+                   i += 3;
+                 }
+               }

 
 

-       function diff3MergeRegions(a, o, b) {
-         // "hunks" are array subsets where `a` or `b` are different from `o`
-         // https://www.gnu.org/software/diffutils/manual/html_node/diff3-Hunks.html
-         var hunks = [];
+               return result.join('');
+             }

 
 

-         function addHunk(h, ab) {
-           hunks.push({
-             ab: ab,
-             oStart: h.buffer1[0],
-             oLength: h.buffer1[1],
-             // length of o to remove
-             abStart: h.buffer2[0],
-             abLength: h.buffer2[1] // length of a/b to insert
-             // abContent: (ab === 'a' ? a : b).slice(h.buffer2[0], h.buffer2[0] + h.buffer2[1])
+             return {
+               toBytes: toBytes,
+               fromBytes: fromBytes
+             };
+           }();

 
 

-           });
-         }
+           var convertHex = function () {
+             function toBytes(text) {
+               var result = [];

 
 

-         diffIndices(o, a).forEach(function (item) {
-           return addHunk(item, 'a');
-         });
-         diffIndices(o, b).forEach(function (item) {
-           return addHunk(item, 'b');
-         });
-         hunks.sort(function (x, y) {
-           return x.oStart - y.oStart;
-         });
-         var results = [];
-         var currOffset = 0;
+               for (var i = 0; i < text.length; i += 2) {
+                 result.push(parseInt(text.substr(i, 2), 16));
+               }

 
 

-         function advanceTo(endOffset) {
-           if (endOffset > currOffset) {
-             results.push({
-               stable: true,
-               buffer: 'o',
-               bufferStart: currOffset,
-               bufferLength: endOffset - currOffset,
-               bufferContent: o.slice(currOffset, endOffset)
-             });
-             currOffset = endOffset;
-           }
-         }
+               return result;
+             } // http://ixti.net/development/javascript/2011/11/11/base64-encodedecode-of-utf8-in-browser-with-js.html

 
 

-         while (hunks.length) {
-           var hunk = hunks.shift();
-           var regionStart = hunk.oStart;
-           var regionEnd = hunk.oStart + hunk.oLength;
-           var regionHunks = [hunk];
-           advanceTo(regionStart); // Try to pull next overlapping hunk into this region

 
 

-           while (hunks.length) {
-             var nextHunk = hunks[0];
-             var nextHunkStart = nextHunk.oStart;
-             if (nextHunkStart > regionEnd) break; // no overlap
+             var Hex = '0123456789abcdef';

 
 

-             regionEnd = Math.max(regionEnd, nextHunkStart + nextHunk.oLength);
-             regionHunks.push(hunks.shift());
-           }
+             function fromBytes(bytes) {
+               var result = [];

 
 

-           if (regionHunks.length === 1) {
-             // Only one hunk touches this region, meaning that there is no conflict here.
-             // Either `a` or `b` is inserting into a region of `o` unchanged by the other.
-             if (hunk.abLength > 0) {
-               var buffer = hunk.ab === 'a' ? a : b;
-               results.push({
-                 stable: true,
-                 buffer: hunk.ab,
-                 bufferStart: hunk.abStart,
-                 bufferLength: hunk.abLength,
-                 bufferContent: buffer.slice(hunk.abStart, hunk.abStart + hunk.abLength)
-               });
-             }
-           } else {
-             // A true a/b conflict. Determine the bounds involved from `a`, `o`, and `b`.
-             // Effectively merge all the `a` hunks into one giant hunk, then do the
-             // same for the `b` hunks; then, correct for skew in the regions of `o`
-             // that each side changed, and report appropriate spans for the three sides.
-             var bounds = {
-               a: [a.length, -1, o.length, -1],
-               b: [b.length, -1, o.length, -1]
-             };
+               for (var i = 0; i < bytes.length; i++) {
+                 var v = bytes[i];
+                 result.push(Hex[(v & 0xf0) >> 4] + Hex[v & 0x0f]);
+               }

 
 

-             while (regionHunks.length) {
-               hunk = regionHunks.shift();
-               var oStart = hunk.oStart;
-               var oEnd = oStart + hunk.oLength;
-               var abStart = hunk.abStart;
-               var abEnd = abStart + hunk.abLength;
-               var _b = bounds[hunk.ab];
-               _b[0] = Math.min(abStart, _b[0]);
-               _b[1] = Math.max(abEnd, _b[1]);
-               _b[2] = Math.min(oStart, _b[2]);
-               _b[3] = Math.max(oEnd, _b[3]);
+               return result.join('');

              }
 
              }
 

-             var aStart = bounds.a[0] + (regionStart - bounds.a[2]);
-             var aEnd = bounds.a[1] + (regionEnd - bounds.a[3]);
-             var bStart = bounds.b[0] + (regionStart - bounds.b[2]);
-             var bEnd = bounds.b[1] + (regionEnd - bounds.b[3]);
-             var result = {
-               stable: false,
-               aStart: aStart,
-               aLength: aEnd - aStart,
-               aContent: a.slice(aStart, aEnd),
-               oStart: regionStart,
-               oLength: regionEnd - regionStart,
-               oContent: o.slice(regionStart, regionEnd),
-               bStart: bStart,
-               bLength: bEnd - bStart,
-               bContent: b.slice(bStart, bEnd)
+             return {
+               toBytes: toBytes,
+               fromBytes: fromBytes

              };
              };

-             results.push(result);
-           }
+           }(); // Number of rounds by keysize

 
 

-           currOffset = regionEnd;
-         }

 
 

-         advanceTo(o.length);
-         return results;
-       } // Applies the output of diff3MergeRegions to actually
-       // construct the merged buffer; the returned result alternates
-       // between 'ok' and 'conflict' blocks.
-       // A "false conflict" is where `a` and `b` both change the same from `o`
+           var numberOfRounds = {
+             16: 10,
+             24: 12,
+             32: 14
+           }; // Round constant words

 
 

+           var rcon = [0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91]; // S-box and Inverse S-box (S is for Substitution)

 
 

-       function diff3Merge(a, o, b, options) {
-         var defaults = {
-           excludeFalseConflicts: true,
-           stringSeparator: /\s+/
-         };
-         options = Object.assign(defaults, options);
-         var aString = typeof a === 'string';
-         var oString = typeof o === 'string';
-         var bString = typeof b === 'string';
-         if (aString) a = a.split(options.stringSeparator);
-         if (oString) o = o.split(options.stringSeparator);
-         if (bString) b = b.split(options.stringSeparator);
-         var results = [];
-         var regions = diff3MergeRegions(a, o, b);
-         var okBuffer = [];
+           var S = [0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16];
+           var Si = [0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d]; // Transformations for encryption

 
 

-         function flushOk() {
-           if (okBuffer.length) {
-             results.push({
-               ok: okBuffer
-             });
-           }
+           var T1 = [0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554, 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d, 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b, 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a, 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f, 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5, 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d, 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb, 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c, 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a, 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81, 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504, 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f, 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395, 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c, 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e, 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4, 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7, 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818, 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21, 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12, 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133, 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a, 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11, 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a];
+           var T2 = [0xa5c66363, 0x84f87c7c, 0x99ee7777, 0x8df67b7b, 0x0dfff2f2, 0xbdd66b6b, 0xb1de6f6f, 0x5491c5c5, 0x50603030, 0x03020101, 0xa9ce6767, 0x7d562b2b, 0x19e7fefe, 0x62b5d7d7, 0xe64dabab, 0x9aec7676, 0x458fcaca, 0x9d1f8282, 0x4089c9c9, 0x87fa7d7d, 0x15effafa, 0xebb25959, 0xc98e4747, 0x0bfbf0f0, 0xec41adad, 0x67b3d4d4, 0xfd5fa2a2, 0xea45afaf, 0xbf239c9c, 0xf753a4a4, 0x96e47272, 0x5b9bc0c0, 0xc275b7b7, 0x1ce1fdfd, 0xae3d9393, 0x6a4c2626, 0x5a6c3636, 0x417e3f3f, 0x02f5f7f7, 0x4f83cccc, 0x5c683434, 0xf451a5a5, 0x34d1e5e5, 0x08f9f1f1, 0x93e27171, 0x73abd8d8, 0x53623131, 0x3f2a1515, 0x0c080404, 0x5295c7c7, 0x65462323, 0x5e9dc3c3, 0x28301818, 0xa1379696, 0x0f0a0505, 0xb52f9a9a, 0x090e0707, 0x36241212, 0x9b1b8080, 0x3ddfe2e2, 0x26cdebeb, 0x694e2727, 0xcd7fb2b2, 0x9fea7575, 0x1b120909, 0x9e1d8383, 0x74582c2c, 0x2e341a1a, 0x2d361b1b, 0xb2dc6e6e, 0xeeb45a5a, 0xfb5ba0a0, 0xf6a45252, 0x4d763b3b, 0x61b7d6d6, 0xce7db3b3, 0x7b522929, 0x3edde3e3, 0x715e2f2f, 0x97138484, 0xf5a65353, 0x68b9d1d1, 0x00000000, 0x2cc1eded, 0x60402020, 0x1fe3fcfc, 0xc879b1b1, 0xedb65b5b, 0xbed46a6a, 0x468dcbcb, 0xd967bebe, 0x4b723939, 0xde944a4a, 0xd4984c4c, 0xe8b05858, 0x4a85cfcf, 0x6bbbd0d0, 0x2ac5efef, 0xe54faaaa, 0x16edfbfb, 0xc5864343, 0xd79a4d4d, 0x55663333, 0x94118585, 0xcf8a4545, 0x10e9f9f9, 0x06040202, 0x81fe7f7f, 0xf0a05050, 0x44783c3c, 0xba259f9f, 0xe34ba8a8, 0xf3a25151, 0xfe5da3a3, 0xc0804040, 0x8a058f8f, 0xad3f9292, 0xbc219d9d, 0x48703838, 0x04f1f5f5, 0xdf63bcbc, 0xc177b6b6, 0x75afdada, 0x63422121, 0x30201010, 0x1ae5ffff, 0x0efdf3f3, 0x6dbfd2d2, 0x4c81cdcd, 0x14180c0c, 0x35261313, 0x2fc3ecec, 0xe1be5f5f, 0xa2359797, 0xcc884444, 0x392e1717, 0x5793c4c4, 0xf255a7a7, 0x82fc7e7e, 0x477a3d3d, 0xacc86464, 0xe7ba5d5d, 0x2b321919, 0x95e67373, 0xa0c06060, 0x98198181, 0xd19e4f4f, 0x7fa3dcdc, 0x66442222, 0x7e542a2a, 0xab3b9090, 0x830b8888, 0xca8c4646, 0x29c7eeee, 0xd36bb8b8, 0x3c281414, 0x79a7dede, 0xe2bc5e5e, 0x1d160b0b, 0x76addbdb, 0x3bdbe0e0, 0x56643232, 0x4e743a3a, 0x1e140a0a, 0xdb924949, 0x0a0c0606, 0x6c482424, 0xe4b85c5c, 0x5d9fc2c2, 0x6ebdd3d3, 0xef43acac, 0xa6c46262, 0xa8399191, 0xa4319595, 0x37d3e4e4, 0x8bf27979, 0x32d5e7e7, 0x438bc8c8, 0x596e3737, 0xb7da6d6d, 0x8c018d8d, 0x64b1d5d5, 0xd29c4e4e, 0xe049a9a9, 0xb4d86c6c, 0xfaac5656, 0x07f3f4f4, 0x25cfeaea, 0xafca6565, 0x8ef47a7a, 0xe947aeae, 0x18100808, 0xd56fbaba, 0x88f07878, 0x6f4a2525, 0x725c2e2e, 0x24381c1c, 0xf157a6a6, 0xc773b4b4, 0x5197c6c6, 0x23cbe8e8, 0x7ca1dddd, 0x9ce87474, 0x213e1f1f, 0xdd964b4b, 0xdc61bdbd, 0x860d8b8b, 0x850f8a8a, 0x90e07070, 0x427c3e3e, 0xc471b5b5, 0xaacc6666, 0xd8904848, 0x05060303, 0x01f7f6f6, 0x121c0e0e, 0xa3c26161, 0x5f6a3535, 0xf9ae5757, 0xd069b9b9, 0x91178686, 0x5899c1c1, 0x273a1d1d, 0xb9279e9e, 0x38d9e1e1, 0x13ebf8f8, 0xb32b9898, 0x33221111, 0xbbd26969, 0x70a9d9d9, 0x89078e8e, 0xa7339494, 0xb62d9b9b, 0x223c1e1e, 0x92158787, 0x20c9e9e9, 0x4987cece, 0xffaa5555, 0x78502828, 0x7aa5dfdf, 0x8f038c8c, 0xf859a1a1, 0x80098989, 0x171a0d0d, 0xda65bfbf, 0x31d7e6e6, 0xc6844242, 0xb8d06868, 0xc3824141, 0xb0299999, 0x775a2d2d, 0x111e0f0f, 0xcb7bb0b0, 0xfca85454, 0xd66dbbbb, 0x3a2c1616];
+           var T3 = [0x63a5c663, 0x7c84f87c, 0x7799ee77, 0x7b8df67b, 0xf20dfff2, 0x6bbdd66b, 0x6fb1de6f, 0xc55491c5, 0x30506030, 0x01030201, 0x67a9ce67, 0x2b7d562b, 0xfe19e7fe, 0xd762b5d7, 0xabe64dab, 0x769aec76, 0xca458fca, 0x829d1f82, 0xc94089c9, 0x7d87fa7d, 0xfa15effa, 0x59ebb259, 0x47c98e47, 0xf00bfbf0, 0xadec41ad, 0xd467b3d4, 0xa2fd5fa2, 0xafea45af, 0x9cbf239c, 0xa4f753a4, 0x7296e472, 0xc05b9bc0, 0xb7c275b7, 0xfd1ce1fd, 0x93ae3d93, 0x266a4c26, 0x365a6c36, 0x3f417e3f, 0xf702f5f7, 0xcc4f83cc, 0x345c6834, 0xa5f451a5, 0xe534d1e5, 0xf108f9f1, 0x7193e271, 0xd873abd8, 0x31536231, 0x153f2a15, 0x040c0804, 0xc75295c7, 0x23654623, 0xc35e9dc3, 0x18283018, 0x96a13796, 0x050f0a05, 0x9ab52f9a, 0x07090e07, 0x12362412, 0x809b1b80, 0xe23ddfe2, 0xeb26cdeb, 0x27694e27, 0xb2cd7fb2, 0x759fea75, 0x091b1209, 0x839e1d83, 0x2c74582c, 0x1a2e341a, 0x1b2d361b, 0x6eb2dc6e, 0x5aeeb45a, 0xa0fb5ba0, 0x52f6a452, 0x3b4d763b, 0xd661b7d6, 0xb3ce7db3, 0x297b5229, 0xe33edde3, 0x2f715e2f, 0x84971384, 0x53f5a653, 0xd168b9d1, 0x00000000, 0xed2cc1ed, 0x20604020, 0xfc1fe3fc, 0xb1c879b1, 0x5bedb65b, 0x6abed46a, 0xcb468dcb, 0xbed967be, 0x394b7239, 0x4ade944a, 0x4cd4984c, 0x58e8b058, 0xcf4a85cf, 0xd06bbbd0, 0xef2ac5ef, 0xaae54faa, 0xfb16edfb, 0x43c58643, 0x4dd79a4d, 0x33556633, 0x85941185, 0x45cf8a45, 0xf910e9f9, 0x02060402, 0x7f81fe7f, 0x50f0a050, 0x3c44783c, 0x9fba259f, 0xa8e34ba8, 0x51f3a251, 0xa3fe5da3, 0x40c08040, 0x8f8a058f, 0x92ad3f92, 0x9dbc219d, 0x38487038, 0xf504f1f5, 0xbcdf63bc, 0xb6c177b6, 0xda75afda, 0x21634221, 0x10302010, 0xff1ae5ff, 0xf30efdf3, 0xd26dbfd2, 0xcd4c81cd, 0x0c14180c, 0x13352613, 0xec2fc3ec, 0x5fe1be5f, 0x97a23597, 0x44cc8844, 0x17392e17, 0xc45793c4, 0xa7f255a7, 0x7e82fc7e, 0x3d477a3d, 0x64acc864, 0x5de7ba5d, 0x192b3219, 0x7395e673, 0x60a0c060, 0x81981981, 0x4fd19e4f, 0xdc7fa3dc, 0x22664422, 0x2a7e542a, 0x90ab3b90, 0x88830b88, 0x46ca8c46, 0xee29c7ee, 0xb8d36bb8, 0x143c2814, 0xde79a7de, 0x5ee2bc5e, 0x0b1d160b, 0xdb76addb, 0xe03bdbe0, 0x32566432, 0x3a4e743a, 0x0a1e140a, 0x49db9249, 0x060a0c06, 0x246c4824, 0x5ce4b85c, 0xc25d9fc2, 0xd36ebdd3, 0xacef43ac, 0x62a6c462, 0x91a83991, 0x95a43195, 0xe437d3e4, 0x798bf279, 0xe732d5e7, 0xc8438bc8, 0x37596e37, 0x6db7da6d, 0x8d8c018d, 0xd564b1d5, 0x4ed29c4e, 0xa9e049a9, 0x6cb4d86c, 0x56faac56, 0xf407f3f4, 0xea25cfea, 0x65afca65, 0x7a8ef47a, 0xaee947ae, 0x08181008, 0xbad56fba, 0x7888f078, 0x256f4a25, 0x2e725c2e, 0x1c24381c, 0xa6f157a6, 0xb4c773b4, 0xc65197c6, 0xe823cbe8, 0xdd7ca1dd, 0x749ce874, 0x1f213e1f, 0x4bdd964b, 0xbddc61bd, 0x8b860d8b, 0x8a850f8a, 0x7090e070, 0x3e427c3e, 0xb5c471b5, 0x66aacc66, 0x48d89048, 0x03050603, 0xf601f7f6, 0x0e121c0e, 0x61a3c261, 0x355f6a35, 0x57f9ae57, 0xb9d069b9, 0x86911786, 0xc15899c1, 0x1d273a1d, 0x9eb9279e, 0xe138d9e1, 0xf813ebf8, 0x98b32b98, 0x11332211, 0x69bbd269, 0xd970a9d9, 0x8e89078e, 0x94a73394, 0x9bb62d9b, 0x1e223c1e, 0x87921587, 0xe920c9e9, 0xce4987ce, 0x55ffaa55, 0x28785028, 0xdf7aa5df, 0x8c8f038c, 0xa1f859a1, 0x89800989, 0x0d171a0d, 0xbfda65bf, 0xe631d7e6, 0x42c68442, 0x68b8d068, 0x41c38241, 0x99b02999, 0x2d775a2d, 0x0f111e0f, 0xb0cb7bb0, 0x54fca854, 0xbbd66dbb, 0x163a2c16];
+           var T4 = [0x6363a5c6, 0x7c7c84f8, 0x777799ee, 0x7b7b8df6, 0xf2f20dff, 0x6b6bbdd6, 0x6f6fb1de, 0xc5c55491, 0x30305060, 0x01010302, 0x6767a9ce, 0x2b2b7d56, 0xfefe19e7, 0xd7d762b5, 0xababe64d, 0x76769aec, 0xcaca458f, 0x82829d1f, 0xc9c94089, 0x7d7d87fa, 0xfafa15ef, 0x5959ebb2, 0x4747c98e, 0xf0f00bfb, 0xadadec41, 0xd4d467b3, 0xa2a2fd5f, 0xafafea45, 0x9c9cbf23, 0xa4a4f753, 0x727296e4, 0xc0c05b9b, 0xb7b7c275, 0xfdfd1ce1, 0x9393ae3d, 0x26266a4c, 0x36365a6c, 0x3f3f417e, 0xf7f702f5, 0xcccc4f83, 0x34345c68, 0xa5a5f451, 0xe5e534d1, 0xf1f108f9, 0x717193e2, 0xd8d873ab, 0x31315362, 0x15153f2a, 0x04040c08, 0xc7c75295, 0x23236546, 0xc3c35e9d, 0x18182830, 0x9696a137, 0x05050f0a, 0x9a9ab52f, 0x0707090e, 0x12123624, 0x80809b1b, 0xe2e23ddf, 0xebeb26cd, 0x2727694e, 0xb2b2cd7f, 0x75759fea, 0x09091b12, 0x83839e1d, 0x2c2c7458, 0x1a1a2e34, 0x1b1b2d36, 0x6e6eb2dc, 0x5a5aeeb4, 0xa0a0fb5b, 0x5252f6a4, 0x3b3b4d76, 0xd6d661b7, 0xb3b3ce7d, 0x29297b52, 0xe3e33edd, 0x2f2f715e, 0x84849713, 0x5353f5a6, 0xd1d168b9, 0x00000000, 0xeded2cc1, 0x20206040, 0xfcfc1fe3, 0xb1b1c879, 0x5b5bedb6, 0x6a6abed4, 0xcbcb468d, 0xbebed967, 0x39394b72, 0x4a4ade94, 0x4c4cd498, 0x5858e8b0, 0xcfcf4a85, 0xd0d06bbb, 0xefef2ac5, 0xaaaae54f, 0xfbfb16ed, 0x4343c586, 0x4d4dd79a, 0x33335566, 0x85859411, 0x4545cf8a, 0xf9f910e9, 0x02020604, 0x7f7f81fe, 0x5050f0a0, 0x3c3c4478, 0x9f9fba25, 0xa8a8e34b, 0x5151f3a2, 0xa3a3fe5d, 0x4040c080, 0x8f8f8a05, 0x9292ad3f, 0x9d9dbc21, 0x38384870, 0xf5f504f1, 0xbcbcdf63, 0xb6b6c177, 0xdada75af, 0x21216342, 0x10103020, 0xffff1ae5, 0xf3f30efd, 0xd2d26dbf, 0xcdcd4c81, 0x0c0c1418, 0x13133526, 0xecec2fc3, 0x5f5fe1be, 0x9797a235, 0x4444cc88, 0x1717392e, 0xc4c45793, 0xa7a7f255, 0x7e7e82fc, 0x3d3d477a, 0x6464acc8, 0x5d5de7ba, 0x19192b32, 0x737395e6, 0x6060a0c0, 0x81819819, 0x4f4fd19e, 0xdcdc7fa3, 0x22226644, 0x2a2a7e54, 0x9090ab3b, 0x8888830b, 0x4646ca8c, 0xeeee29c7, 0xb8b8d36b, 0x14143c28, 0xdede79a7, 0x5e5ee2bc, 0x0b0b1d16, 0xdbdb76ad, 0xe0e03bdb, 0x32325664, 0x3a3a4e74, 0x0a0a1e14, 0x4949db92, 0x06060a0c, 0x24246c48, 0x5c5ce4b8, 0xc2c25d9f, 0xd3d36ebd, 0xacacef43, 0x6262a6c4, 0x9191a839, 0x9595a431, 0xe4e437d3, 0x79798bf2, 0xe7e732d5, 0xc8c8438b, 0x3737596e, 0x6d6db7da, 0x8d8d8c01, 0xd5d564b1, 0x4e4ed29c, 0xa9a9e049, 0x6c6cb4d8, 0x5656faac, 0xf4f407f3, 0xeaea25cf, 0x6565afca, 0x7a7a8ef4, 0xaeaee947, 0x08081810, 0xbabad56f, 0x787888f0, 0x25256f4a, 0x2e2e725c, 0x1c1c2438, 0xa6a6f157, 0xb4b4c773, 0xc6c65197, 0xe8e823cb, 0xdddd7ca1, 0x74749ce8, 0x1f1f213e, 0x4b4bdd96, 0xbdbddc61, 0x8b8b860d, 0x8a8a850f, 0x707090e0, 0x3e3e427c, 0xb5b5c471, 0x6666aacc, 0x4848d890, 0x03030506, 0xf6f601f7, 0x0e0e121c, 0x6161a3c2, 0x35355f6a, 0x5757f9ae, 0xb9b9d069, 0x86869117, 0xc1c15899, 0x1d1d273a, 0x9e9eb927, 0xe1e138d9, 0xf8f813eb, 0x9898b32b, 0x11113322, 0x6969bbd2, 0xd9d970a9, 0x8e8e8907, 0x9494a733, 0x9b9bb62d, 0x1e1e223c, 0x87879215, 0xe9e920c9, 0xcece4987, 0x5555ffaa, 0x28287850, 0xdfdf7aa5, 0x8c8c8f03, 0xa1a1f859, 0x89898009, 0x0d0d171a, 0xbfbfda65, 0xe6e631d7, 0x4242c684, 0x6868b8d0, 0x4141c382, 0x9999b029, 0x2d2d775a, 0x0f0f111e, 0xb0b0cb7b, 0x5454fca8, 0xbbbbd66d, 0x16163a2c]; // Transformations for decryption

 
 

-           okBuffer = [];
-         }
+           var T5 = [0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25, 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6, 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd, 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94, 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5, 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a, 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46, 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77, 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb, 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927, 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16, 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd, 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120, 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422, 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4, 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3, 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6, 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815, 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f, 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89, 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86, 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541, 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190, 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742];
+           var T6 = [0x5051f4a7, 0x537e4165, 0xc31a17a4, 0x963a275e, 0xcb3bab6b, 0xf11f9d45, 0xabacfa58, 0x934be303, 0x552030fa, 0xf6ad766d, 0x9188cc76, 0x25f5024c, 0xfc4fe5d7, 0xd7c52acb, 0x80263544, 0x8fb562a3, 0x49deb15a, 0x6725ba1b, 0x9845ea0e, 0xe15dfec0, 0x02c32f75, 0x12814cf0, 0xa38d4697, 0xc66bd3f9, 0xe7038f5f, 0x9515929c, 0xebbf6d7a, 0xda955259, 0x2dd4be83, 0xd3587421, 0x2949e069, 0x448ec9c8, 0x6a75c289, 0x78f48e79, 0x6b99583e, 0xdd27b971, 0xb6bee14f, 0x17f088ad, 0x66c920ac, 0xb47dce3a, 0x1863df4a, 0x82e51a31, 0x60975133, 0x4562537f, 0xe0b16477, 0x84bb6bae, 0x1cfe81a0, 0x94f9082b, 0x58704868, 0x198f45fd, 0x8794de6c, 0xb7527bf8, 0x23ab73d3, 0xe2724b02, 0x57e31f8f, 0x2a6655ab, 0x07b2eb28, 0x032fb5c2, 0x9a86c57b, 0xa5d33708, 0xf2302887, 0xb223bfa5, 0xba02036a, 0x5ced1682, 0x2b8acf1c, 0x92a779b4, 0xf0f307f2, 0xa14e69e2, 0xcd65daf4, 0xd50605be, 0x1fd13462, 0x8ac4a6fe, 0x9d342e53, 0xa0a2f355, 0x32058ae1, 0x75a4f6eb, 0x390b83ec, 0xaa4060ef, 0x065e719f, 0x51bd6e10, 0xf93e218a, 0x3d96dd06, 0xaedd3e05, 0x464de6bd, 0xb591548d, 0x0571c45d, 0x6f0406d4, 0xff605015, 0x241998fb, 0x97d6bde9, 0xcc894043, 0x7767d99e, 0xbdb0e842, 0x8807898b, 0x38e7195b, 0xdb79c8ee, 0x47a17c0a, 0xe97c420f, 0xc9f8841e, 0x00000000, 0x83098086, 0x48322bed, 0xac1e1170, 0x4e6c5a72, 0xfbfd0eff, 0x560f8538, 0x1e3daed5, 0x27362d39, 0x640a0fd9, 0x21685ca6, 0xd19b5b54, 0x3a24362e, 0xb10c0a67, 0x0f9357e7, 0xd2b4ee96, 0x9e1b9b91, 0x4f80c0c5, 0xa261dc20, 0x695a774b, 0x161c121a, 0x0ae293ba, 0xe5c0a02a, 0x433c22e0, 0x1d121b17, 0x0b0e090d, 0xadf28bc7, 0xb92db6a8, 0xc8141ea9, 0x8557f119, 0x4caf7507, 0xbbee99dd, 0xfda37f60, 0x9ff70126, 0xbc5c72f5, 0xc544663b, 0x345bfb7e, 0x768b4329, 0xdccb23c6, 0x68b6edfc, 0x63b8e4f1, 0xcad731dc, 0x10426385, 0x40139722, 0x2084c611, 0x7d854a24, 0xf8d2bb3d, 0x11aef932, 0x6dc729a1, 0x4b1d9e2f, 0xf3dcb230, 0xec0d8652, 0xd077c1e3, 0x6c2bb316, 0x99a970b9, 0xfa119448, 0x2247e964, 0xc4a8fc8c, 0x1aa0f03f, 0xd8567d2c, 0xef223390, 0xc787494e, 0xc1d938d1, 0xfe8ccaa2, 0x3698d40b, 0xcfa6f581, 0x28a57ade, 0x26dab78e, 0xa43fadbf, 0xe42c3a9d, 0x0d507892, 0x9b6a5fcc, 0x62547e46, 0xc2f68d13, 0xe890d8b8, 0x5e2e39f7, 0xf582c3af, 0xbe9f5d80, 0x7c69d093, 0xa96fd52d, 0xb3cf2512, 0x3bc8ac99, 0xa710187d, 0x6ee89c63, 0x7bdb3bbb, 0x09cd2678, 0xf46e5918, 0x01ec9ab7, 0xa8834f9a, 0x65e6956e, 0x7eaaffe6, 0x0821bccf, 0xe6ef15e8, 0xd9bae79b, 0xce4a6f36, 0xd4ea9f09, 0xd629b07c, 0xaf31a4b2, 0x312a3f23, 0x30c6a594, 0xc035a266, 0x37744ebc, 0xa6fc82ca, 0xb0e090d0, 0x1533a7d8, 0x4af10498, 0xf741ecda, 0x0e7fcd50, 0x2f1791f6, 0x8d764dd6, 0x4d43efb0, 0x54ccaa4d, 0xdfe49604, 0xe39ed1b5, 0x1b4c6a88, 0xb8c12c1f, 0x7f466551, 0x049d5eea, 0x5d018c35, 0x73fa8774, 0x2efb0b41, 0x5ab3671d, 0x5292dbd2, 0x33e91056, 0x136dd647, 0x8c9ad761, 0x7a37a10c, 0x8e59f814, 0x89eb133c, 0xeecea927, 0x35b761c9, 0xede11ce5, 0x3c7a47b1, 0x599cd2df, 0x3f55f273, 0x791814ce, 0xbf73c737, 0xea53f7cd, 0x5b5ffdaa, 0x14df3d6f, 0x867844db, 0x81caaff3, 0x3eb968c4, 0x2c382434, 0x5fc2a340, 0x72161dc3, 0x0cbce225, 0x8b283c49, 0x41ff0d95, 0x7139a801, 0xde080cb3, 0x9cd8b4e4, 0x906456c1, 0x617bcb84, 0x70d532b6, 0x74486c5c, 0x42d0b857];
+           var T7 = [0xa75051f4, 0x65537e41, 0xa4c31a17, 0x5e963a27, 0x6bcb3bab, 0x45f11f9d, 0x58abacfa, 0x03934be3, 0xfa552030, 0x6df6ad76, 0x769188cc, 0x4c25f502, 0xd7fc4fe5, 0xcbd7c52a, 0x44802635, 0xa38fb562, 0x5a49deb1, 0x1b6725ba, 0x0e9845ea, 0xc0e15dfe, 0x7502c32f, 0xf012814c, 0x97a38d46, 0xf9c66bd3, 0x5fe7038f, 0x9c951592, 0x7aebbf6d, 0x59da9552, 0x832dd4be, 0x21d35874, 0x692949e0, 0xc8448ec9, 0x896a75c2, 0x7978f48e, 0x3e6b9958, 0x71dd27b9, 0x4fb6bee1, 0xad17f088, 0xac66c920, 0x3ab47dce, 0x4a1863df, 0x3182e51a, 0x33609751, 0x7f456253, 0x77e0b164, 0xae84bb6b, 0xa01cfe81, 0x2b94f908, 0x68587048, 0xfd198f45, 0x6c8794de, 0xf8b7527b, 0xd323ab73, 0x02e2724b, 0x8f57e31f, 0xab2a6655, 0x2807b2eb, 0xc2032fb5, 0x7b9a86c5, 0x08a5d337, 0x87f23028, 0xa5b223bf, 0x6aba0203, 0x825ced16, 0x1c2b8acf, 0xb492a779, 0xf2f0f307, 0xe2a14e69, 0xf4cd65da, 0xbed50605, 0x621fd134, 0xfe8ac4a6, 0x539d342e, 0x55a0a2f3, 0xe132058a, 0xeb75a4f6, 0xec390b83, 0xefaa4060, 0x9f065e71, 0x1051bd6e, 0x8af93e21, 0x063d96dd, 0x05aedd3e, 0xbd464de6, 0x8db59154, 0x5d0571c4, 0xd46f0406, 0x15ff6050, 0xfb241998, 0xe997d6bd, 0x43cc8940, 0x9e7767d9, 0x42bdb0e8, 0x8b880789, 0x5b38e719, 0xeedb79c8, 0x0a47a17c, 0x0fe97c42, 0x1ec9f884, 0x00000000, 0x86830980, 0xed48322b, 0x70ac1e11, 0x724e6c5a, 0xfffbfd0e, 0x38560f85, 0xd51e3dae, 0x3927362d, 0xd9640a0f, 0xa621685c, 0x54d19b5b, 0x2e3a2436, 0x67b10c0a, 0xe70f9357, 0x96d2b4ee, 0x919e1b9b, 0xc54f80c0, 0x20a261dc, 0x4b695a77, 0x1a161c12, 0xba0ae293, 0x2ae5c0a0, 0xe0433c22, 0x171d121b, 0x0d0b0e09, 0xc7adf28b, 0xa8b92db6, 0xa9c8141e, 0x198557f1, 0x074caf75, 0xddbbee99, 0x60fda37f, 0x269ff701, 0xf5bc5c72, 0x3bc54466, 0x7e345bfb, 0x29768b43, 0xc6dccb23, 0xfc68b6ed, 0xf163b8e4, 0xdccad731, 0x85104263, 0x22401397, 0x112084c6, 0x247d854a, 0x3df8d2bb, 0x3211aef9, 0xa16dc729, 0x2f4b1d9e, 0x30f3dcb2, 0x52ec0d86, 0xe3d077c1, 0x166c2bb3, 0xb999a970, 0x48fa1194, 0x642247e9, 0x8cc4a8fc, 0x3f1aa0f0, 0x2cd8567d, 0x90ef2233, 0x4ec78749, 0xd1c1d938, 0xa2fe8cca, 0x0b3698d4, 0x81cfa6f5, 0xde28a57a, 0x8e26dab7, 0xbfa43fad, 0x9de42c3a, 0x920d5078, 0xcc9b6a5f, 0x4662547e, 0x13c2f68d, 0xb8e890d8, 0xf75e2e39, 0xaff582c3, 0x80be9f5d, 0x937c69d0, 0x2da96fd5, 0x12b3cf25, 0x993bc8ac, 0x7da71018, 0x636ee89c, 0xbb7bdb3b, 0x7809cd26, 0x18f46e59, 0xb701ec9a, 0x9aa8834f, 0x6e65e695, 0xe67eaaff, 0xcf0821bc, 0xe8e6ef15, 0x9bd9bae7, 0x36ce4a6f, 0x09d4ea9f, 0x7cd629b0, 0xb2af31a4, 0x23312a3f, 0x9430c6a5, 0x66c035a2, 0xbc37744e, 0xcaa6fc82, 0xd0b0e090, 0xd81533a7, 0x984af104, 0xdaf741ec, 0x500e7fcd, 0xf62f1791, 0xd68d764d, 0xb04d43ef, 0x4d54ccaa, 0x04dfe496, 0xb5e39ed1, 0x881b4c6a, 0x1fb8c12c, 0x517f4665, 0xea049d5e, 0x355d018c, 0x7473fa87, 0x412efb0b, 0x1d5ab367, 0xd25292db, 0x5633e910, 0x47136dd6, 0x618c9ad7, 0x0c7a37a1, 0x148e59f8, 0x3c89eb13, 0x27eecea9, 0xc935b761, 0xe5ede11c, 0xb13c7a47, 0xdf599cd2, 0x733f55f2, 0xce791814, 0x37bf73c7, 0xcdea53f7, 0xaa5b5ffd, 0x6f14df3d, 0xdb867844, 0xf381caaf, 0xc43eb968, 0x342c3824, 0x405fc2a3, 0xc372161d, 0x250cbce2, 0x498b283c, 0x9541ff0d, 0x017139a8, 0xb3de080c, 0xe49cd8b4, 0xc1906456, 0x84617bcb, 0xb670d532, 0x5c74486c, 0x5742d0b8];
+           var T8 = [0xf4a75051, 0x4165537e, 0x17a4c31a, 0x275e963a, 0xab6bcb3b, 0x9d45f11f, 0xfa58abac, 0xe303934b, 0x30fa5520, 0x766df6ad, 0xcc769188, 0x024c25f5, 0xe5d7fc4f, 0x2acbd7c5, 0x35448026, 0x62a38fb5, 0xb15a49de, 0xba1b6725, 0xea0e9845, 0xfec0e15d, 0x2f7502c3, 0x4cf01281, 0x4697a38d, 0xd3f9c66b, 0x8f5fe703, 0x929c9515, 0x6d7aebbf, 0x5259da95, 0xbe832dd4, 0x7421d358, 0xe0692949, 0xc9c8448e, 0xc2896a75, 0x8e7978f4, 0x583e6b99, 0xb971dd27, 0xe14fb6be, 0x88ad17f0, 0x20ac66c9, 0xce3ab47d, 0xdf4a1863, 0x1a3182e5, 0x51336097, 0x537f4562, 0x6477e0b1, 0x6bae84bb, 0x81a01cfe, 0x082b94f9, 0x48685870, 0x45fd198f, 0xde6c8794, 0x7bf8b752, 0x73d323ab, 0x4b02e272, 0x1f8f57e3, 0x55ab2a66, 0xeb2807b2, 0xb5c2032f, 0xc57b9a86, 0x3708a5d3, 0x2887f230, 0xbfa5b223, 0x036aba02, 0x16825ced, 0xcf1c2b8a, 0x79b492a7, 0x07f2f0f3, 0x69e2a14e, 0xdaf4cd65, 0x05bed506, 0x34621fd1, 0xa6fe8ac4, 0x2e539d34, 0xf355a0a2, 0x8ae13205, 0xf6eb75a4, 0x83ec390b, 0x60efaa40, 0x719f065e, 0x6e1051bd, 0x218af93e, 0xdd063d96, 0x3e05aedd, 0xe6bd464d, 0x548db591, 0xc45d0571, 0x06d46f04, 0x5015ff60, 0x98fb2419, 0xbde997d6, 0x4043cc89, 0xd99e7767, 0xe842bdb0, 0x898b8807, 0x195b38e7, 0xc8eedb79, 0x7c0a47a1, 0x420fe97c, 0x841ec9f8, 0x00000000, 0x80868309, 0x2bed4832, 0x1170ac1e, 0x5a724e6c, 0x0efffbfd, 0x8538560f, 0xaed51e3d, 0x2d392736, 0x0fd9640a, 0x5ca62168, 0x5b54d19b, 0x362e3a24, 0x0a67b10c, 0x57e70f93, 0xee96d2b4, 0x9b919e1b, 0xc0c54f80, 0xdc20a261, 0x774b695a, 0x121a161c, 0x93ba0ae2, 0xa02ae5c0, 0x22e0433c, 0x1b171d12, 0x090d0b0e, 0x8bc7adf2, 0xb6a8b92d, 0x1ea9c814, 0xf1198557, 0x75074caf, 0x99ddbbee, 0x7f60fda3, 0x01269ff7, 0x72f5bc5c, 0x663bc544, 0xfb7e345b, 0x4329768b, 0x23c6dccb, 0xedfc68b6, 0xe4f163b8, 0x31dccad7, 0x63851042, 0x97224013, 0xc6112084, 0x4a247d85, 0xbb3df8d2, 0xf93211ae, 0x29a16dc7, 0x9e2f4b1d, 0xb230f3dc, 0x8652ec0d, 0xc1e3d077, 0xb3166c2b, 0x70b999a9, 0x9448fa11, 0xe9642247, 0xfc8cc4a8, 0xf03f1aa0, 0x7d2cd856, 0x3390ef22, 0x494ec787, 0x38d1c1d9, 0xcaa2fe8c, 0xd40b3698, 0xf581cfa6, 0x7ade28a5, 0xb78e26da, 0xadbfa43f, 0x3a9de42c, 0x78920d50, 0x5fcc9b6a, 0x7e466254, 0x8d13c2f6, 0xd8b8e890, 0x39f75e2e, 0xc3aff582, 0x5d80be9f, 0xd0937c69, 0xd52da96f, 0x2512b3cf, 0xac993bc8, 0x187da710, 0x9c636ee8, 0x3bbb7bdb, 0x267809cd, 0x5918f46e, 0x9ab701ec, 0x4f9aa883, 0x956e65e6, 0xffe67eaa, 0xbccf0821, 0x15e8e6ef, 0xe79bd9ba, 0x6f36ce4a, 0x9f09d4ea, 0xb07cd629, 0xa4b2af31, 0x3f23312a, 0xa59430c6, 0xa266c035, 0x4ebc3774, 0x82caa6fc, 0x90d0b0e0, 0xa7d81533, 0x04984af1, 0xecdaf741, 0xcd500e7f, 0x91f62f17, 0x4dd68d76, 0xefb04d43, 0xaa4d54cc, 0x9604dfe4, 0xd1b5e39e, 0x6a881b4c, 0x2c1fb8c1, 0x65517f46, 0x5eea049d, 0x8c355d01, 0x877473fa, 0x0b412efb, 0x671d5ab3, 0xdbd25292, 0x105633e9, 0xd647136d, 0xd7618c9a, 0xa10c7a37, 0xf8148e59, 0x133c89eb, 0xa927eece, 0x61c935b7, 0x1ce5ede1, 0x47b13c7a, 0xd2df599c, 0xf2733f55, 0x14ce7918, 0xc737bf73, 0xf7cdea53, 0xfdaa5b5f, 0x3d6f14df, 0x44db8678, 0xaff381ca, 0x68c43eb9, 0x24342c38, 0xa3405fc2, 0x1dc37216, 0xe2250cbc, 0x3c498b28, 0x0d9541ff, 0xa8017139, 0x0cb3de08, 0xb4e49cd8, 0x56c19064, 0xcb84617b, 0x32b670d5, 0x6c5c7448, 0xb85742d0]; // Transformations for decryption key expansion

 
 

-         function isFalseConflict(a, b) {
-           if (a.length !== b.length) return false;
+           var U1 = [0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3];
+           var U2 = [0x00000000, 0x0b0e090d, 0x161c121a, 0x1d121b17, 0x2c382434, 0x27362d39, 0x3a24362e, 0x312a3f23, 0x58704868, 0x537e4165, 0x4e6c5a72, 0x4562537f, 0x74486c5c, 0x7f466551, 0x62547e46, 0x695a774b, 0xb0e090d0, 0xbbee99dd, 0xa6fc82ca, 0xadf28bc7, 0x9cd8b4e4, 0x97d6bde9, 0x8ac4a6fe, 0x81caaff3, 0xe890d8b8, 0xe39ed1b5, 0xfe8ccaa2, 0xf582c3af, 0xc4a8fc8c, 0xcfa6f581, 0xd2b4ee96, 0xd9bae79b, 0x7bdb3bbb, 0x70d532b6, 0x6dc729a1, 0x66c920ac, 0x57e31f8f, 0x5ced1682, 0x41ff0d95, 0x4af10498, 0x23ab73d3, 0x28a57ade, 0x35b761c9, 0x3eb968c4, 0x0f9357e7, 0x049d5eea, 0x198f45fd, 0x12814cf0, 0xcb3bab6b, 0xc035a266, 0xdd27b971, 0xd629b07c, 0xe7038f5f, 0xec0d8652, 0xf11f9d45, 0xfa119448, 0x934be303, 0x9845ea0e, 0x8557f119, 0x8e59f814, 0xbf73c737, 0xb47dce3a, 0xa96fd52d, 0xa261dc20, 0xf6ad766d, 0xfda37f60, 0xe0b16477, 0xebbf6d7a, 0xda955259, 0xd19b5b54, 0xcc894043, 0xc787494e, 0xaedd3e05, 0xa5d33708, 0xb8c12c1f, 0xb3cf2512, 0x82e51a31, 0x89eb133c, 0x94f9082b, 0x9ff70126, 0x464de6bd, 0x4d43efb0, 0x5051f4a7, 0x5b5ffdaa, 0x6a75c289, 0x617bcb84, 0x7c69d093, 0x7767d99e, 0x1e3daed5, 0x1533a7d8, 0x0821bccf, 0x032fb5c2, 0x32058ae1, 0x390b83ec, 0x241998fb, 0x2f1791f6, 0x8d764dd6, 0x867844db, 0x9b6a5fcc, 0x906456c1, 0xa14e69e2, 0xaa4060ef, 0xb7527bf8, 0xbc5c72f5, 0xd50605be, 0xde080cb3, 0xc31a17a4, 0xc8141ea9, 0xf93e218a, 0xf2302887, 0xef223390, 0xe42c3a9d, 0x3d96dd06, 0x3698d40b, 0x2b8acf1c, 0x2084c611, 0x11aef932, 0x1aa0f03f, 0x07b2eb28, 0x0cbce225, 0x65e6956e, 0x6ee89c63, 0x73fa8774, 0x78f48e79, 0x49deb15a, 0x42d0b857, 0x5fc2a340, 0x54ccaa4d, 0xf741ecda, 0xfc4fe5d7, 0xe15dfec0, 0xea53f7cd, 0xdb79c8ee, 0xd077c1e3, 0xcd65daf4, 0xc66bd3f9, 0xaf31a4b2, 0xa43fadbf, 0xb92db6a8, 0xb223bfa5, 0x83098086, 0x8807898b, 0x9515929c, 0x9e1b9b91, 0x47a17c0a, 0x4caf7507, 0x51bd6e10, 0x5ab3671d, 0x6b99583e, 0x60975133, 0x7d854a24, 0x768b4329, 0x1fd13462, 0x14df3d6f, 0x09cd2678, 0x02c32f75, 0x33e91056, 0x38e7195b, 0x25f5024c, 0x2efb0b41, 0x8c9ad761, 0x8794de6c, 0x9a86c57b, 0x9188cc76, 0xa0a2f355, 0xabacfa58, 0xb6bee14f, 0xbdb0e842, 0xd4ea9f09, 0xdfe49604, 0xc2f68d13, 0xc9f8841e, 0xf8d2bb3d, 0xf3dcb230, 0xeecea927, 0xe5c0a02a, 0x3c7a47b1, 0x37744ebc, 0x2a6655ab, 0x21685ca6, 0x10426385, 0x1b4c6a88, 0x065e719f, 0x0d507892, 0x640a0fd9, 0x6f0406d4, 0x72161dc3, 0x791814ce, 0x48322bed, 0x433c22e0, 0x5e2e39f7, 0x552030fa, 0x01ec9ab7, 0x0ae293ba, 0x17f088ad, 0x1cfe81a0, 0x2dd4be83, 0x26dab78e, 0x3bc8ac99, 0x30c6a594, 0x599cd2df, 0x5292dbd2, 0x4f80c0c5, 0x448ec9c8, 0x75a4f6eb, 0x7eaaffe6, 0x63b8e4f1, 0x68b6edfc, 0xb10c0a67, 0xba02036a, 0xa710187d, 0xac1e1170, 0x9d342e53, 0x963a275e, 0x8b283c49, 0x80263544, 0xe97c420f, 0xe2724b02, 0xff605015, 0xf46e5918, 0xc544663b, 0xce4a6f36, 0xd3587421, 0xd8567d2c, 0x7a37a10c, 0x7139a801, 0x6c2bb316, 0x6725ba1b, 0x560f8538, 0x5d018c35, 0x40139722, 0x4b1d9e2f, 0x2247e964, 0x2949e069, 0x345bfb7e, 0x3f55f273, 0x0e7fcd50, 0x0571c45d, 0x1863df4a, 0x136dd647, 0xcad731dc, 0xc1d938d1, 0xdccb23c6, 0xd7c52acb, 0xe6ef15e8, 0xede11ce5, 0xf0f307f2, 0xfbfd0eff, 0x92a779b4, 0x99a970b9, 0x84bb6bae, 0x8fb562a3, 0xbe9f5d80, 0xb591548d, 0xa8834f9a, 0xa38d4697];
+           var U3 = [0x00000000, 0x0d0b0e09, 0x1a161c12, 0x171d121b, 0x342c3824, 0x3927362d, 0x2e3a2436, 0x23312a3f, 0x68587048, 0x65537e41, 0x724e6c5a, 0x7f456253, 0x5c74486c, 0x517f4665, 0x4662547e, 0x4b695a77, 0xd0b0e090, 0xddbbee99, 0xcaa6fc82, 0xc7adf28b, 0xe49cd8b4, 0xe997d6bd, 0xfe8ac4a6, 0xf381caaf, 0xb8e890d8, 0xb5e39ed1, 0xa2fe8cca, 0xaff582c3, 0x8cc4a8fc, 0x81cfa6f5, 0x96d2b4ee, 0x9bd9bae7, 0xbb7bdb3b, 0xb670d532, 0xa16dc729, 0xac66c920, 0x8f57e31f, 0x825ced16, 0x9541ff0d, 0x984af104, 0xd323ab73, 0xde28a57a, 0xc935b761, 0xc43eb968, 0xe70f9357, 0xea049d5e, 0xfd198f45, 0xf012814c, 0x6bcb3bab, 0x66c035a2, 0x71dd27b9, 0x7cd629b0, 0x5fe7038f, 0x52ec0d86, 0x45f11f9d, 0x48fa1194, 0x03934be3, 0x0e9845ea, 0x198557f1, 0x148e59f8, 0x37bf73c7, 0x3ab47dce, 0x2da96fd5, 0x20a261dc, 0x6df6ad76, 0x60fda37f, 0x77e0b164, 0x7aebbf6d, 0x59da9552, 0x54d19b5b, 0x43cc8940, 0x4ec78749, 0x05aedd3e, 0x08a5d337, 0x1fb8c12c, 0x12b3cf25, 0x3182e51a, 0x3c89eb13, 0x2b94f908, 0x269ff701, 0xbd464de6, 0xb04d43ef, 0xa75051f4, 0xaa5b5ffd, 0x896a75c2, 0x84617bcb, 0x937c69d0, 0x9e7767d9, 0xd51e3dae, 0xd81533a7, 0xcf0821bc, 0xc2032fb5, 0xe132058a, 0xec390b83, 0xfb241998, 0xf62f1791, 0xd68d764d, 0xdb867844, 0xcc9b6a5f, 0xc1906456, 0xe2a14e69, 0xefaa4060, 0xf8b7527b, 0xf5bc5c72, 0xbed50605, 0xb3de080c, 0xa4c31a17, 0xa9c8141e, 0x8af93e21, 0x87f23028, 0x90ef2233, 0x9de42c3a, 0x063d96dd, 0x0b3698d4, 0x1c2b8acf, 0x112084c6, 0x3211aef9, 0x3f1aa0f0, 0x2807b2eb, 0x250cbce2, 0x6e65e695, 0x636ee89c, 0x7473fa87, 0x7978f48e, 0x5a49deb1, 0x5742d0b8, 0x405fc2a3, 0x4d54ccaa, 0xdaf741ec, 0xd7fc4fe5, 0xc0e15dfe, 0xcdea53f7, 0xeedb79c8, 0xe3d077c1, 0xf4cd65da, 0xf9c66bd3, 0xb2af31a4, 0xbfa43fad, 0xa8b92db6, 0xa5b223bf, 0x86830980, 0x8b880789, 0x9c951592, 0x919e1b9b, 0x0a47a17c, 0x074caf75, 0x1051bd6e, 0x1d5ab367, 0x3e6b9958, 0x33609751, 0x247d854a, 0x29768b43, 0x621fd134, 0x6f14df3d, 0x7809cd26, 0x7502c32f, 0x5633e910, 0x5b38e719, 0x4c25f502, 0x412efb0b, 0x618c9ad7, 0x6c8794de, 0x7b9a86c5, 0x769188cc, 0x55a0a2f3, 0x58abacfa, 0x4fb6bee1, 0x42bdb0e8, 0x09d4ea9f, 0x04dfe496, 0x13c2f68d, 0x1ec9f884, 0x3df8d2bb, 0x30f3dcb2, 0x27eecea9, 0x2ae5c0a0, 0xb13c7a47, 0xbc37744e, 0xab2a6655, 0xa621685c, 0x85104263, 0x881b4c6a, 0x9f065e71, 0x920d5078, 0xd9640a0f, 0xd46f0406, 0xc372161d, 0xce791814, 0xed48322b, 0xe0433c22, 0xf75e2e39, 0xfa552030, 0xb701ec9a, 0xba0ae293, 0xad17f088, 0xa01cfe81, 0x832dd4be, 0x8e26dab7, 0x993bc8ac, 0x9430c6a5, 0xdf599cd2, 0xd25292db, 0xc54f80c0, 0xc8448ec9, 0xeb75a4f6, 0xe67eaaff, 0xf163b8e4, 0xfc68b6ed, 0x67b10c0a, 0x6aba0203, 0x7da71018, 0x70ac1e11, 0x539d342e, 0x5e963a27, 0x498b283c, 0x44802635, 0x0fe97c42, 0x02e2724b, 0x15ff6050, 0x18f46e59, 0x3bc54466, 0x36ce4a6f, 0x21d35874, 0x2cd8567d, 0x0c7a37a1, 0x017139a8, 0x166c2bb3, 0x1b6725ba, 0x38560f85, 0x355d018c, 0x22401397, 0x2f4b1d9e, 0x642247e9, 0x692949e0, 0x7e345bfb, 0x733f55f2, 0x500e7fcd, 0x5d0571c4, 0x4a1863df, 0x47136dd6, 0xdccad731, 0xd1c1d938, 0xc6dccb23, 0xcbd7c52a, 0xe8e6ef15, 0xe5ede11c, 0xf2f0f307, 0xfffbfd0e, 0xb492a779, 0xb999a970, 0xae84bb6b, 0xa38fb562, 0x80be9f5d, 0x8db59154, 0x9aa8834f, 0x97a38d46];
+           var U4 = [0x00000000, 0x090d0b0e, 0x121a161c, 0x1b171d12, 0x24342c38, 0x2d392736, 0x362e3a24, 0x3f23312a, 0x48685870, 0x4165537e, 0x5a724e6c, 0x537f4562, 0x6c5c7448, 0x65517f46, 0x7e466254, 0x774b695a, 0x90d0b0e0, 0x99ddbbee, 0x82caa6fc, 0x8bc7adf2, 0xb4e49cd8, 0xbde997d6, 0xa6fe8ac4, 0xaff381ca, 0xd8b8e890, 0xd1b5e39e, 0xcaa2fe8c, 0xc3aff582, 0xfc8cc4a8, 0xf581cfa6, 0xee96d2b4, 0xe79bd9ba, 0x3bbb7bdb, 0x32b670d5, 0x29a16dc7, 0x20ac66c9, 0x1f8f57e3, 0x16825ced, 0x0d9541ff, 0x04984af1, 0x73d323ab, 0x7ade28a5, 0x61c935b7, 0x68c43eb9, 0x57e70f93, 0x5eea049d, 0x45fd198f, 0x4cf01281, 0xab6bcb3b, 0xa266c035, 0xb971dd27, 0xb07cd629, 0x8f5fe703, 0x8652ec0d, 0x9d45f11f, 0x9448fa11, 0xe303934b, 0xea0e9845, 0xf1198557, 0xf8148e59, 0xc737bf73, 0xce3ab47d, 0xd52da96f, 0xdc20a261, 0x766df6ad, 0x7f60fda3, 0x6477e0b1, 0x6d7aebbf, 0x5259da95, 0x5b54d19b, 0x4043cc89, 0x494ec787, 0x3e05aedd, 0x3708a5d3, 0x2c1fb8c1, 0x2512b3cf, 0x1a3182e5, 0x133c89eb, 0x082b94f9, 0x01269ff7, 0xe6bd464d, 0xefb04d43, 0xf4a75051, 0xfdaa5b5f, 0xc2896a75, 0xcb84617b, 0xd0937c69, 0xd99e7767, 0xaed51e3d, 0xa7d81533, 0xbccf0821, 0xb5c2032f, 0x8ae13205, 0x83ec390b, 0x98fb2419, 0x91f62f17, 0x4dd68d76, 0x44db8678, 0x5fcc9b6a, 0x56c19064, 0x69e2a14e, 0x60efaa40, 0x7bf8b752, 0x72f5bc5c, 0x05bed506, 0x0cb3de08, 0x17a4c31a, 0x1ea9c814, 0x218af93e, 0x2887f230, 0x3390ef22, 0x3a9de42c, 0xdd063d96, 0xd40b3698, 0xcf1c2b8a, 0xc6112084, 0xf93211ae, 0xf03f1aa0, 0xeb2807b2, 0xe2250cbc, 0x956e65e6, 0x9c636ee8, 0x877473fa, 0x8e7978f4, 0xb15a49de, 0xb85742d0, 0xa3405fc2, 0xaa4d54cc, 0xecdaf741, 0xe5d7fc4f, 0xfec0e15d, 0xf7cdea53, 0xc8eedb79, 0xc1e3d077, 0xdaf4cd65, 0xd3f9c66b, 0xa4b2af31, 0xadbfa43f, 0xb6a8b92d, 0xbfa5b223, 0x80868309, 0x898b8807, 0x929c9515, 0x9b919e1b, 0x7c0a47a1, 0x75074caf, 0x6e1051bd, 0x671d5ab3, 0x583e6b99, 0x51336097, 0x4a247d85, 0x4329768b, 0x34621fd1, 0x3d6f14df, 0x267809cd, 0x2f7502c3, 0x105633e9, 0x195b38e7, 0x024c25f5, 0x0b412efb, 0xd7618c9a, 0xde6c8794, 0xc57b9a86, 0xcc769188, 0xf355a0a2, 0xfa58abac, 0xe14fb6be, 0xe842bdb0, 0x9f09d4ea, 0x9604dfe4, 0x8d13c2f6, 0x841ec9f8, 0xbb3df8d2, 0xb230f3dc, 0xa927eece, 0xa02ae5c0, 0x47b13c7a, 0x4ebc3774, 0x55ab2a66, 0x5ca62168, 0x63851042, 0x6a881b4c, 0x719f065e, 0x78920d50, 0x0fd9640a, 0x06d46f04, 0x1dc37216, 0x14ce7918, 0x2bed4832, 0x22e0433c, 0x39f75e2e, 0x30fa5520, 0x9ab701ec, 0x93ba0ae2, 0x88ad17f0, 0x81a01cfe, 0xbe832dd4, 0xb78e26da, 0xac993bc8, 0xa59430c6, 0xd2df599c, 0xdbd25292, 0xc0c54f80, 0xc9c8448e, 0xf6eb75a4, 0xffe67eaa, 0xe4f163b8, 0xedfc68b6, 0x0a67b10c, 0x036aba02, 0x187da710, 0x1170ac1e, 0x2e539d34, 0x275e963a, 0x3c498b28, 0x35448026, 0x420fe97c, 0x4b02e272, 0x5015ff60, 0x5918f46e, 0x663bc544, 0x6f36ce4a, 0x7421d358, 0x7d2cd856, 0xa10c7a37, 0xa8017139, 0xb3166c2b, 0xba1b6725, 0x8538560f, 0x8c355d01, 0x97224013, 0x9e2f4b1d, 0xe9642247, 0xe0692949, 0xfb7e345b, 0xf2733f55, 0xcd500e7f, 0xc45d0571, 0xdf4a1863, 0xd647136d, 0x31dccad7, 0x38d1c1d9, 0x23c6dccb, 0x2acbd7c5, 0x15e8e6ef, 0x1ce5ede1, 0x07f2f0f3, 0x0efffbfd, 0x79b492a7, 0x70b999a9, 0x6bae84bb, 0x62a38fb5, 0x5d80be9f, 0x548db591, 0x4f9aa883, 0x4697a38d];

 
 

-           for (var i = 0; i < a.length; i++) {
-             if (a[i] !== b[i]) return false;
+           function convertToInt32(bytes) {
+             var result = [];
+
+             for (var i = 0; i < bytes.length; i += 4) {
+               result.push(bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]);
+             }
+
+             return result;

            }
 
            }
 

-           return true;
-         }
+           var AES = function AES(key) {
+             if (!(this instanceof AES)) {
+               throw Error('AES must be instanitated with `new`');
+             }

 
 

-         regions.forEach(function (region) {
-           if (region.stable) {
-             var _okBuffer;
+             Object.defineProperty(this, 'key', {
+               value: coerceArray(key, true)
+             });

 
 

-             (_okBuffer = okBuffer).push.apply(_okBuffer, _toConsumableArray(region.bufferContent));
-           } else {
-             if (options.excludeFalseConflicts && isFalseConflict(region.aContent, region.bContent)) {
-               var _okBuffer2;
+             this._prepare();
+           };

 
 

-               (_okBuffer2 = okBuffer).push.apply(_okBuffer2, _toConsumableArray(region.aContent));
-             } else {
-               flushOk();
-               results.push({
-                 conflict: {
-                   a: region.aContent,
-                   aIndex: region.aStart,
-                   o: region.oContent,
-                   oIndex: region.oStart,
-                   b: region.bContent,
-                   bIndex: region.bStart
-                 }
-               });
-             }
-           }
-         });
-         flushOk();
-         return results;
-       }
+           AES.prototype._prepare = function () {
+             var rounds = numberOfRounds[this.key.length];

 
 

-       function actionMergeRemoteChanges(id, localGraph, remoteGraph, discardTags, formatUser) {
-         discardTags = discardTags || {};
-         var _option = 'safe'; // 'safe', 'force_local', 'force_remote'
+             if (rounds == null) {
+               throw new Error('invalid key size (must be 16, 24 or 32 bytes)');
+             } // encryption round keys

 
 

-         var _conflicts = [];

 
 

-         function user(d) {
-           return typeof formatUser === 'function' ? formatUser(d) : d;
-         }
+             this._Ke = []; // decryption round keys

 
 

-         function mergeLocation(remote, target) {
-           function pointEqual(a, b) {
-             var epsilon = 1e-6;
-             return Math.abs(a[0] - b[0]) < epsilon && Math.abs(a[1] - b[1]) < epsilon;
-           }
+             this._Kd = [];

 
 

-           if (_option === 'force_local' || pointEqual(target.loc, remote.loc)) {
-             return target;
-           }
+             for (var i = 0; i <= rounds; i++) {
+               this._Ke.push([0, 0, 0, 0]);

 
 

-           if (_option === 'force_remote') {
-             return target.update({
-               loc: remote.loc
-             });
-           }
+               this._Kd.push([0, 0, 0, 0]);
+             }

 
 

-           _conflicts.push(_t('merge_remote_changes.conflict.location', {
-             user: user(remote.user)
-           }));
+             var roundKeyCount = (rounds + 1) * 4;
+             var KC = this.key.length / 4; // convert the key into ints

 
 

-           return target;
-         }
+             var tk = convertToInt32(this.key); // copy values into round key arrays

 
 

-         function mergeNodes(base, remote, target) {
-           if (_option === 'force_local' || fastDeepEqual(target.nodes, remote.nodes)) {
-             return target;
-           }
+             var index;

 
 

-           if (_option === 'force_remote') {
-             return target.update({
-               nodes: remote.nodes
-             });
-           }
+             for (var i = 0; i < KC; i++) {
+               index = i >> 2;
+               this._Ke[index][i % 4] = tk[i];
+               this._Kd[rounds - index][i % 4] = tk[i];
+             } // key expansion (fips-197 section 5.2)

 
 

-           var ccount = _conflicts.length;
-           var o = base.nodes || [];
-           var a = target.nodes || [];
-           var b = remote.nodes || [];
-           var nodes = [];
-           var hunks = diff3Merge(a, o, b, {
-             excludeFalseConflicts: true
-           });

 
 

-           for (var i = 0; i < hunks.length; i++) {
-             var hunk = hunks[i];
+             var rconpointer = 0;
+             var t = KC,
+                 tt;

 
 

-             if (hunk.ok) {
-               nodes.push.apply(nodes, hunk.ok);
-             } else {
-               // for all conflicts, we can assume c.a !== c.b
-               // because `diff3Merge` called with `true` option to exclude false conflicts..
-               var c = hunk.conflict;
+             while (t < roundKeyCount) {
+               tt = tk[KC - 1];
+               tk[0] ^= S[tt >> 16 & 0xFF] << 24 ^ S[tt >> 8 & 0xFF] << 16 ^ S[tt & 0xFF] << 8 ^ S[tt >> 24 & 0xFF] ^ rcon[rconpointer] << 24;
+               rconpointer += 1; // key expansion (for non-256 bit)
+
+               if (KC != 8) {
+                 for (var i = 1; i < KC; i++) {
+                   tk[i] ^= tk[i - 1];
+                 } // key expansion for 256-bit keys is "slightly different" (fips-197)

 
 

-               if (fastDeepEqual(c.o, c.a)) {
-                 // only changed remotely
-                 nodes.push.apply(nodes, c.b);
-               } else if (fastDeepEqual(c.o, c.b)) {
-                 // only changed locally
-                 nodes.push.apply(nodes, c.a);

                } else {
                } else {

-                 // changed both locally and remotely
-                 _conflicts.push(_t('merge_remote_changes.conflict.nodelist', {
-                   user: user(remote.user)
-                 }));
+                 for (var i = 1; i < KC / 2; i++) {
+                   tk[i] ^= tk[i - 1];
+                 }

 
 

-                 break;
-               }
-             }
-           }
+                 tt = tk[KC / 2 - 1];
+                 tk[KC / 2] ^= S[tt & 0xFF] ^ S[tt >> 8 & 0xFF] << 8 ^ S[tt >> 16 & 0xFF] << 16 ^ S[tt >> 24 & 0xFF] << 24;

 
 

-           return _conflicts.length === ccount ? target.update({
-             nodes: nodes
-           }) : target;
-         }
+                 for (var i = KC / 2 + 1; i < KC; i++) {
+                   tk[i] ^= tk[i - 1];
+                 }
+               } // copy values into round key arrays

 
 

-         function mergeChildren(targetWay, children, updates, graph) {
-           function isUsed(node, targetWay) {
-             var hasInterestingParent = graph.parentWays(node).some(function (way) {
-               return way.id !== targetWay.id;
-             });
-             return node.hasInterestingTags() || hasInterestingParent || graph.parentRelations(node).length > 0;
-           }

 
 

-           var ccount = _conflicts.length;
+               var i = 0,
+                   r,
+                   c;

 
 

-           for (var i = 0; i < children.length; i++) {
-             var id = children[i];
-             var node = graph.hasEntity(id); // remove unused childNodes..
+               while (i < KC && t < roundKeyCount) {
+                 r = t >> 2;
+                 c = t % 4;
+                 this._Ke[r][c] = tk[i];
+                 this._Kd[rounds - r][c] = tk[i++];
+                 t++;
+               }
+             } // inverse-cipher-ify the decryption round key (fips-197 section 5.3)

 
 

-             if (targetWay.nodes.indexOf(id) === -1) {
-               if (node && !isUsed(node, targetWay)) {
-                 updates.removeIds.push(id);
+
+             for (var r = 1; r < rounds; r++) {
+               for (var c = 0; c < 4; c++) {
+                 tt = this._Kd[r][c];
+                 this._Kd[r][c] = U1[tt >> 24 & 0xFF] ^ U2[tt >> 16 & 0xFF] ^ U3[tt >> 8 & 0xFF] ^ U4[tt & 0xFF];

                }
                }

+             }
+           };

 
 

-               continue;
-             } // restore used childNodes..
+           AES.prototype.encrypt = function (plaintext) {
+             if (plaintext.length != 16) {
+               throw new Error('invalid plaintext size (must be 16 bytes)');
+             }

 
 

+             var rounds = this._Ke.length - 1;
+             var a = [0, 0, 0, 0]; // convert plaintext to (ints ^ key)

 
 

-             var local = localGraph.hasEntity(id);
-             var remote = remoteGraph.hasEntity(id);
-             var target;
+             var t = convertToInt32(plaintext);

 
 

-             if (_option === 'force_remote' && remote && remote.visible) {
-               updates.replacements.push(remote);
-             } else if (_option === 'force_local' && local) {
-               target = osmEntity(local);
+             for (var i = 0; i < 4; i++) {
+               t[i] ^= this._Ke[0][i];
+             } // apply round transforms

 
 

-               if (remote) {
-                 target = target.update({
-                   version: remote.version
-                 });
+
+             for (var r = 1; r < rounds; r++) {
+               for (var i = 0; i < 4; i++) {
+                 a[i] = T1[t[i] >> 24 & 0xff] ^ T2[t[(i + 1) % 4] >> 16 & 0xff] ^ T3[t[(i + 2) % 4] >> 8 & 0xff] ^ T4[t[(i + 3) % 4] & 0xff] ^ this._Ke[r][i];

                }
 
                }
 

-               updates.replacements.push(target);
-             } else if (_option === 'safe' && local && remote && local.version !== remote.version) {
-               target = osmEntity(local, {
-                 version: remote.version
-               });
+               t = a.slice();
+             } // the last round is special

 
 

-               if (remote.visible) {
-                 target = mergeLocation(remote, target);
-               } else {
-                 _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
-                   user: user(remote.user)
-                 }));
-               }

 
 

-               if (_conflicts.length !== ccount) break;
-               updates.replacements.push(target);
+             var result = createArray(16),
+                 tt;
+
+             for (var i = 0; i < 4; i++) {
+               tt = this._Ke[rounds][i];
+               result[4 * i] = (S[t[i] >> 24 & 0xff] ^ tt >> 24) & 0xff;
+               result[4 * i + 1] = (S[t[(i + 1) % 4] >> 16 & 0xff] ^ tt >> 16) & 0xff;
+               result[4 * i + 2] = (S[t[(i + 2) % 4] >> 8 & 0xff] ^ tt >> 8) & 0xff;
+               result[4 * i + 3] = (S[t[(i + 3) % 4] & 0xff] ^ tt) & 0xff;

              }
              }

-           }

 
 

-           return targetWay;
-         }
+             return result;
+           };

 
 

-         function updateChildren(updates, graph) {
-           for (var i = 0; i < updates.replacements.length; i++) {
-             graph = graph.replace(updates.replacements[i]);
-           }
+           AES.prototype.decrypt = function (ciphertext) {
+             if (ciphertext.length != 16) {
+               throw new Error('invalid ciphertext size (must be 16 bytes)');
+             }

 
 

-           if (updates.removeIds.length) {
-             graph = actionDeleteMultiple(updates.removeIds)(graph);
-           }
+             var rounds = this._Kd.length - 1;
+             var a = [0, 0, 0, 0]; // convert plaintext to (ints ^ key)

 
 

-           return graph;
-         }
+             var t = convertToInt32(ciphertext);

 
 

-         function mergeMembers(remote, target) {
-           if (_option === 'force_local' || fastDeepEqual(target.members, remote.members)) {
-             return target;
-           }
+             for (var i = 0; i < 4; i++) {
+               t[i] ^= this._Kd[0][i];
+             } // apply round transforms

 
 

-           if (_option === 'force_remote') {
-             return target.update({
-               members: remote.members
-             });
-           }

 
 

-           _conflicts.push(_t('merge_remote_changes.conflict.memberlist', {
-             user: user(remote.user)
-           }));
+             for (var r = 1; r < rounds; r++) {
+               for (var i = 0; i < 4; i++) {
+                 a[i] = T5[t[i] >> 24 & 0xff] ^ T6[t[(i + 3) % 4] >> 16 & 0xff] ^ T7[t[(i + 2) % 4] >> 8 & 0xff] ^ T8[t[(i + 1) % 4] & 0xff] ^ this._Kd[r][i];
+               }

 
 

-           return target;
-         }
+               t = a.slice();
+             } // the last round is special

 
 

-         function mergeTags(base, remote, target) {
-           if (_option === 'force_local' || fastDeepEqual(target.tags, remote.tags)) {
-             return target;
-           }

 
 

-           if (_option === 'force_remote') {
-             return target.update({
-               tags: remote.tags
-             });
-           }
+             var result = createArray(16),
+                 tt;

 
 

-           var ccount = _conflicts.length;
-           var o = base.tags || {};
-           var a = target.tags || {};
-           var b = remote.tags || {};
-           var keys = utilArrayUnion(utilArrayUnion(Object.keys(o), Object.keys(a)), Object.keys(b)).filter(function (k) {
-             return !discardTags[k];
-           });
-           var tags = Object.assign({}, a); // shallow copy
+             for (var i = 0; i < 4; i++) {
+               tt = this._Kd[rounds][i];
+               result[4 * i] = (Si[t[i] >> 24 & 0xff] ^ tt >> 24) & 0xff;
+               result[4 * i + 1] = (Si[t[(i + 3) % 4] >> 16 & 0xff] ^ tt >> 16) & 0xff;
+               result[4 * i + 2] = (Si[t[(i + 2) % 4] >> 8 & 0xff] ^ tt >> 8) & 0xff;
+               result[4 * i + 3] = (Si[t[(i + 1) % 4] & 0xff] ^ tt) & 0xff;
+             }

 
 

-           var changed = false;
+             return result;
+           };
+           /**
+            *  Mode Of Operation - Electonic Codebook (ECB)
+            */

 
 

-           for (var i = 0; i < keys.length; i++) {
-             var k = keys[i];

 
 

-             if (o[k] !== b[k] && a[k] !== b[k]) {
-               // changed remotely..
-               if (o[k] !== a[k]) {
-                 // changed locally..
-                 _conflicts.push(_t('merge_remote_changes.conflict.tags', {
-                   tag: k,
-                   local: a[k],
-                   remote: b[k],
-                   user: user(remote.user)
-                 }));
-               } else {
-                 // unchanged locally, accept remote change..
-                 if (b.hasOwnProperty(k)) {
-                   tags[k] = b[k];
-                 } else {
-                   delete tags[k];
-                 }
+           var ModeOfOperationECB = function ModeOfOperationECB(key) {
+             if (!(this instanceof ModeOfOperationECB)) {
+               throw Error('AES must be instanitated with `new`');
+             }

 
 

-                 changed = true;
-               }
+             this.description = "Electronic Code Block";
+             this.name = "ecb";
+             this._aes = new AES(key);
+           };
+
+           ModeOfOperationECB.prototype.encrypt = function (plaintext) {
+             plaintext = coerceArray(plaintext);
+
+             if (plaintext.length % 16 !== 0) {
+               throw new Error('invalid plaintext size (must be multiple of 16 bytes)');
+             }
+
+             var ciphertext = createArray(plaintext.length);
+             var block = createArray(16);
+
+             for (var i = 0; i < plaintext.length; i += 16) {
+               copyArray(plaintext, block, 0, i, i + 16);
+               block = this._aes.encrypt(block);
+               copyArray(block, ciphertext, i);
+             }
+
+             return ciphertext;
+           };
+
+           ModeOfOperationECB.prototype.decrypt = function (ciphertext) {
+             ciphertext = coerceArray(ciphertext);
+
+             if (ciphertext.length % 16 !== 0) {
+               throw new Error('invalid ciphertext size (must be multiple of 16 bytes)');

              }
              }

-           }

 
 

-           return changed && _conflicts.length === ccount ? target.update({
-             tags: tags
-           }) : target;
-         } //  `graph.base()` is the common ancestor of the two graphs.
-         //  `localGraph` contains user's edits up to saving
-         //  `remoteGraph` contains remote edits to modified nodes
-         //  `graph` must be a descendent of `localGraph` and may include
-         //      some conflict resolution actions performed on it.
-         //
-         //                  --- ... --- `localGraph` -- ... -- `graph`
-         //                 /
-         //  `graph.base()` --- ... --- `remoteGraph`
-         //
+             var plaintext = createArray(ciphertext.length);
+             var block = createArray(16);

 
 

+             for (var i = 0; i < ciphertext.length; i += 16) {
+               copyArray(ciphertext, block, 0, i, i + 16);
+               block = this._aes.decrypt(block);
+               copyArray(block, plaintext, i);
+             }

 
 

-         var action = function action(graph) {
-           var updates = {
-             replacements: [],
-             removeIds: []
+             return plaintext;

            };
            };

-           var base = graph.base().entities[id];
-           var local = localGraph.entity(id);
-           var remote = remoteGraph.entity(id);
-           var target = osmEntity(local, {
-             version: remote.version
-           }); // delete/undelete
-
-           if (!remote.visible) {
-             if (_option === 'force_remote') {
-               return actionDeleteMultiple([id])(graph);
-             } else if (_option === 'force_local') {
-               if (target.type === 'way') {
-                 target = mergeChildren(target, utilArrayUniq(local.nodes), updates, graph);
-                 graph = updateChildren(updates, graph);
-               }
+           /**
+            *  Mode Of Operation - Cipher Block Chaining (CBC)
+            */

 
 

-               return graph.replace(target);
-             } else {
-               _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
-                 user: user(remote.user)
-               }));

 
 

-               return graph; // do nothing
+           var ModeOfOperationCBC = function ModeOfOperationCBC(key, iv) {
+             if (!(this instanceof ModeOfOperationCBC)) {
+               throw Error('AES must be instanitated with `new`');

              }
              }

-           } // merge

 
 

+             this.description = "Cipher Block Chaining";
+             this.name = "cbc";

 
 

-           if (target.type === 'node') {
-             target = mergeLocation(remote, target);
-           } else if (target.type === 'way') {
-             // pull in any child nodes that may not be present locally..
-             graph.rebase(remoteGraph.childNodes(remote), [graph], false);
-             target = mergeNodes(base, remote, target);
-             target = mergeChildren(target, utilArrayUnion(local.nodes, remote.nodes), updates, graph);
-           } else if (target.type === 'relation') {
-             target = mergeMembers(remote, target);
-           }
+             if (!iv) {
+               iv = createArray(16);
+             } else if (iv.length != 16) {
+               throw new Error('invalid initialation vector size (must be 16 bytes)');
+             }

 
 

-           target = mergeTags(base, remote, target);
+             this._lastCipherblock = coerceArray(iv, true);
+             this._aes = new AES(key);
+           };

 
 

-           if (!_conflicts.length) {
-             graph = updateChildren(updates, graph).replace(target);
-           }
+           ModeOfOperationCBC.prototype.encrypt = function (plaintext) {
+             plaintext = coerceArray(plaintext);

 
 

-           return graph;
-         };
+             if (plaintext.length % 16 !== 0) {
+               throw new Error('invalid plaintext size (must be multiple of 16 bytes)');
+             }

 
 

-         action.withOption = function (opt) {
-           _option = opt;
-           return action;
-         };
+             var ciphertext = createArray(plaintext.length);
+             var block = createArray(16);

 
 

-         action.conflicts = function () {
-           return _conflicts;
-         };
+             for (var i = 0; i < plaintext.length; i += 16) {
+               copyArray(plaintext, block, 0, i, i + 16);

 
 

-         return action;
-       }
+               for (var j = 0; j < 16; j++) {
+                 block[j] ^= this._lastCipherblock[j];
+               }

 
 

-       // https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MoveNodeAction.as
+               this._lastCipherblock = this._aes.encrypt(block);
+               copyArray(this._lastCipherblock, ciphertext, i);
+             }

 
 

-       function actionMove(moveIDs, tryDelta, projection, cache) {
-         var _delta = tryDelta;
+             return ciphertext;
+           };

 
 

-         function setupCache(graph) {
-           function canMove(nodeID) {
-             // Allow movement of any node that is in the selectedIDs list..
-             if (moveIDs.indexOf(nodeID) !== -1) return true; // Allow movement of a vertex where 2 ways meet..
+           ModeOfOperationCBC.prototype.decrypt = function (ciphertext) {
+             ciphertext = coerceArray(ciphertext);

 
 

-             var parents = graph.parentWays(graph.entity(nodeID));
-             if (parents.length < 3) return true; // Restrict movement of a vertex where >2 ways meet, unless all parentWays are moving too..
+             if (ciphertext.length % 16 !== 0) {
+               throw new Error('invalid ciphertext size (must be multiple of 16 bytes)');
+             }

 
 

-             var parentsMoving = parents.every(function (way) {
-               return cache.moving[way.id];
-             });
-             if (!parentsMoving) delete cache.moving[nodeID];
-             return parentsMoving;
-           }
+             var plaintext = createArray(ciphertext.length);
+             var block = createArray(16);

 
 

-           function cacheEntities(ids) {
-             for (var i = 0; i < ids.length; i++) {
-               var id = ids[i];
-               if (cache.moving[id]) continue;
-               cache.moving[id] = true;
-               var entity = graph.hasEntity(id);
-               if (!entity) continue;
+             for (var i = 0; i < ciphertext.length; i += 16) {
+               copyArray(ciphertext, block, 0, i, i + 16);
+               block = this._aes.decrypt(block);

 
 

-               if (entity.type === 'node') {
-                 cache.nodes.push(id);
-                 cache.startLoc[id] = entity.loc;
-               } else if (entity.type === 'way') {
-                 cache.ways.push(id);
-                 cacheEntities(entity.nodes);
-               } else {
-                 cacheEntities(entity.members.map(function (member) {
-                   return member.id;
-                 }));
+               for (var j = 0; j < 16; j++) {
+                 plaintext[i + j] = block[j] ^ this._lastCipherblock[j];

                }
                }

-             }
-           }

 
 

-           function cacheIntersections(ids) {
-             function isEndpoint(way, id) {
-               return !way.isClosed() && !!way.affix(id);
+               copyArray(ciphertext, this._lastCipherblock, 0, i, i + 16);

              }
 
              }
 

-             for (var i = 0; i < ids.length; i++) {
-               var id = ids[i]; // consider only intersections with 1 moved and 1 unmoved way.
+             return plaintext;
+           };
+           /**
+            *  Mode Of Operation - Cipher Feedback (CFB)
+            */

 
 

-               var childNodes = graph.childNodes(graph.entity(id));

 
 

-               for (var j = 0; j < childNodes.length; j++) {
-                 var node = childNodes[j];
-                 var parents = graph.parentWays(node);
-                 if (parents.length !== 2) continue;
-                 var moved = graph.entity(id);
-                 var unmoved = null;
+           var ModeOfOperationCFB = function ModeOfOperationCFB(key, iv, segmentSize) {
+             if (!(this instanceof ModeOfOperationCFB)) {
+               throw Error('AES must be instanitated with `new`');
+             }

 
 

-                 for (var k = 0; k < parents.length; k++) {
-                   var way = parents[k];
+             this.description = "Cipher Feedback";
+             this.name = "cfb";

 
 

-                   if (!cache.moving[way.id]) {
-                     unmoved = way;
-                     break;
-                   }
-                 }
+             if (!iv) {
+               iv = createArray(16);
+             } else if (iv.length != 16) {
+               throw new Error('invalid initialation vector size (must be 16 size)');
+             }

 
 

-                 if (!unmoved) continue; // exclude ways that are overly connected..
+             if (!segmentSize) {
+               segmentSize = 1;
+             }

 
 

-                 if (utilArrayIntersection(moved.nodes, unmoved.nodes).length > 2) continue;
-                 if (moved.isArea() || unmoved.isArea()) continue;
-                 cache.intersections.push({
-                   nodeId: node.id,
-                   movedId: moved.id,
-                   unmovedId: unmoved.id,
-                   movedIsEP: isEndpoint(moved, node.id),
-                   unmovedIsEP: isEndpoint(unmoved, node.id)
-                 });
-               }
+             this.segmentSize = segmentSize;
+             this._shiftRegister = coerceArray(iv, true);
+             this._aes = new AES(key);
+           };
+
+           ModeOfOperationCFB.prototype.encrypt = function (plaintext) {
+             if (plaintext.length % this.segmentSize != 0) {
+               throw new Error('invalid plaintext size (must be segmentSize bytes)');

              }
              }

-           }

 
 

-           if (!cache) {
-             cache = {};
-           }
+             var encrypted = coerceArray(plaintext, true);
+             var xorSegment;

 
 

-           if (!cache.ok) {
-             cache.moving = {};
-             cache.intersections = [];
-             cache.replacedVertex = {};
-             cache.startLoc = {};
-             cache.nodes = [];
-             cache.ways = [];
-             cacheEntities(moveIDs);
-             cacheIntersections(cache.ways);
-             cache.nodes = cache.nodes.filter(canMove);
-             cache.ok = true;
-           }
-         } // Place a vertex where the moved vertex used to be, to preserve way shape..
-         //
-         //  Start:
-         //      b ---- e
-         //     / \
-         //    /   \
-         //   /     \
-         //  a       c
-         //
-         //      *               node '*' added to preserve shape
-         //     / \
-         //    /   b ---- e      way `b,e` moved here:
-         //   /     \
-         //  a       c
-         //
-         //
+             for (var i = 0; i < encrypted.length; i += this.segmentSize) {
+               xorSegment = this._aes.encrypt(this._shiftRegister);

 
 

+               for (var j = 0; j < this.segmentSize; j++) {
+                 encrypted[i + j] ^= xorSegment[j];
+               } // Shift the register

 
 

-         function replaceMovedVertex(nodeId, wayId, graph, delta) {
-           var way = graph.entity(wayId);
-           var moved = graph.entity(nodeId);
-           var movedIndex = way.nodes.indexOf(nodeId);
-           var len, prevIndex, nextIndex;

 
 

-           if (way.isClosed()) {
-             len = way.nodes.length - 1;
-             prevIndex = (movedIndex + len - 1) % len;
-             nextIndex = (movedIndex + len + 1) % len;
-           } else {
-             len = way.nodes.length;
-             prevIndex = movedIndex - 1;
-             nextIndex = movedIndex + 1;
-           }
+               copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize);
+               copyArray(encrypted, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize);
+             }

 
 

-           var prev = graph.hasEntity(way.nodes[prevIndex]);
-           var next = graph.hasEntity(way.nodes[nextIndex]); // Don't add orig vertex at endpoint..
+             return encrypted;
+           };

 
 

-           if (!prev || !next) return graph;
-           var key = wayId + '_' + nodeId;
-           var orig = cache.replacedVertex[key];
+           ModeOfOperationCFB.prototype.decrypt = function (ciphertext) {
+             if (ciphertext.length % this.segmentSize != 0) {
+               throw new Error('invalid ciphertext size (must be segmentSize bytes)');
+             }

 
 

-           if (!orig) {
-             orig = osmNode();
-             cache.replacedVertex[key] = orig;
-             cache.startLoc[orig.id] = cache.startLoc[nodeId];
-           }
+             var plaintext = coerceArray(ciphertext, true);
+             var xorSegment;

 
 

-           var start, end;
+             for (var i = 0; i < plaintext.length; i += this.segmentSize) {
+               xorSegment = this._aes.encrypt(this._shiftRegister);

 
 

-           if (delta) {
-             start = projection(cache.startLoc[nodeId]);
-             end = projection.invert(geoVecAdd(start, delta));
-           } else {
-             end = cache.startLoc[nodeId];
-           }
+               for (var j = 0; j < this.segmentSize; j++) {
+                 plaintext[i + j] ^= xorSegment[j];
+               } // Shift the register

 
 

-           orig = orig.move(end);
-           var angle = Math.abs(geoAngle(orig, prev, projection) - geoAngle(orig, next, projection)) * 180 / Math.PI; // Don't add orig vertex if it would just make a straight line..

 
 

-           if (angle > 175 && angle < 185) return graph; // moving forward or backward along way?
+               copyArray(this._shiftRegister, this._shiftRegister, 0, this.segmentSize);
+               copyArray(ciphertext, this._shiftRegister, 16 - this.segmentSize, i, i + this.segmentSize);
+             }

 
 

-           var p1 = [prev.loc, orig.loc, moved.loc, next.loc].map(projection);
-           var p2 = [prev.loc, moved.loc, orig.loc, next.loc].map(projection);
-           var d1 = geoPathLength(p1);
-           var d2 = geoPathLength(p2);
-           var insertAt = d1 <= d2 ? movedIndex : nextIndex; // moving around closed loop?
+             return plaintext;
+           };
+           /**
+            *  Mode Of Operation - Output Feedback (OFB)
+            */

 
 

-           if (way.isClosed() && insertAt === 0) insertAt = len;
-           way = way.addNode(orig.id, insertAt);
-           return graph.replace(orig).replace(way);
-         } // Remove duplicate vertex that might have been added by
-         // replaceMovedVertex.  This is done after the unzorro checks.

 
 

+           var ModeOfOperationOFB = function ModeOfOperationOFB(key, iv) {
+             if (!(this instanceof ModeOfOperationOFB)) {
+               throw Error('AES must be instanitated with `new`');
+             }
+
+             this.description = "Output Feedback";
+             this.name = "ofb";

 
 

-         function removeDuplicateVertices(wayId, graph) {
-           var way = graph.entity(wayId);
-           var epsilon = 1e-6;
-           var prev, curr;
+             if (!iv) {
+               iv = createArray(16);
+             } else if (iv.length != 16) {
+               throw new Error('invalid initialation vector size (must be 16 bytes)');
+             }

 
 

-           function isInteresting(node, graph) {
-             return graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags();
-           }
+             this._lastPrecipher = coerceArray(iv, true);
+             this._lastPrecipherIndex = 16;
+             this._aes = new AES(key);
+           };

 
 

-           for (var i = 0; i < way.nodes.length; i++) {
-             curr = graph.entity(way.nodes[i]);
+           ModeOfOperationOFB.prototype.encrypt = function (plaintext) {
+             var encrypted = coerceArray(plaintext, true);

 
 

-             if (prev && curr && geoVecEqual(prev.loc, curr.loc, epsilon)) {
-               if (!isInteresting(prev, graph)) {
-                 way = way.removeNode(prev.id);
-                 graph = graph.replace(way).remove(prev);
-               } else if (!isInteresting(curr, graph)) {
-                 way = way.removeNode(curr.id);
-                 graph = graph.replace(way).remove(curr);
+             for (var i = 0; i < encrypted.length; i++) {
+               if (this._lastPrecipherIndex === 16) {
+                 this._lastPrecipher = this._aes.encrypt(this._lastPrecipher);
+                 this._lastPrecipherIndex = 0;

                }
                }

+
+               encrypted[i] ^= this._lastPrecipher[this._lastPrecipherIndex++];

              }
 
              }
 

-             prev = curr;
-           }
+             return encrypted;
+           }; // Decryption is symetric

 
 

-           return graph;
-         } // Reorder nodes around intersections that have moved..
-         //
-         //  Start:                way1.nodes: b,e         (moving)
-         //  a - b - c ----- d     way2.nodes: a,b,c,d     (static)
-         //      |                 vertex: b
-         //      e                 isEP1: true,  isEP2, false
-         //
-         //  way1 `b,e` moved here:
-         //  a ----- c = b - d
-         //              |
-         //              e
-         //
-         //  reorder nodes         way1.nodes: b,e
-         //  a ----- c - b - d     way2.nodes: a,c,b,d
-         //              |
-         //              e
-         //

 
 

+           ModeOfOperationOFB.prototype.decrypt = ModeOfOperationOFB.prototype.encrypt;
+           /**
+            *  Counter object for CTR common mode of operation
+            */

 
 

-         function unZorroIntersection(intersection, graph) {
-           var vertex = graph.entity(intersection.nodeId);
-           var way1 = graph.entity(intersection.movedId);
-           var way2 = graph.entity(intersection.unmovedId);
-           var isEP1 = intersection.movedIsEP;
-           var isEP2 = intersection.unmovedIsEP; // don't move the vertex if it is the endpoint of both ways.
+           var Counter = function Counter(initialValue) {
+             if (!(this instanceof Counter)) {
+               throw Error('Counter must be instanitated with `new`');
+             } // We allow 0, but anything false-ish uses the default 1

 
 

-           if (isEP1 && isEP2) return graph;
-           var nodes1 = graph.childNodes(way1).filter(function (n) {
-             return n !== vertex;
-           });
-           var nodes2 = graph.childNodes(way2).filter(function (n) {
-             return n !== vertex;
-           });
-           if (way1.isClosed() && way1.first() === vertex.id) nodes1.push(nodes1[0]);
-           if (way2.isClosed() && way2.first() === vertex.id) nodes2.push(nodes2[0]);
-           var edge1 = !isEP1 && geoChooseEdge(nodes1, projection(vertex.loc), projection);
-           var edge2 = !isEP2 && geoChooseEdge(nodes2, projection(vertex.loc), projection);
-           var loc; // snap vertex to nearest edge (or some point between them)..

 
 

-           if (!isEP1 && !isEP2) {
-             var epsilon = 1e-6,
-                 maxIter = 10;
+             if (initialValue !== 0 && !initialValue) {
+               initialValue = 1;
+             }

 
 

-             for (var i = 0; i < maxIter; i++) {
-               loc = geoVecInterp(edge1.loc, edge2.loc, 0.5);
-               edge1 = geoChooseEdge(nodes1, projection(loc), projection);
-               edge2 = geoChooseEdge(nodes2, projection(loc), projection);
-               if (Math.abs(edge1.distance - edge2.distance) < epsilon) break;
+             if (typeof initialValue === 'number') {
+               this._counter = createArray(16);
+               this.setValue(initialValue);
+             } else {
+               this.setBytes(initialValue);

              }
              }

-           } else if (!isEP1) {
-             loc = edge1.loc;
-           } else {
-             loc = edge2.loc;
-           }
+           };

 
 

-           graph = graph.replace(vertex.move(loc)); // if zorro happened, reorder nodes..
+           Counter.prototype.setValue = function (value) {
+             if (typeof value !== 'number' || parseInt(value) != value) {
+               throw new Error('invalid counter value (must be an integer)');
+             } // We cannot safely handle numbers beyond the safe range for integers

 
 

-           if (!isEP1 && edge1.index !== way1.nodes.indexOf(vertex.id)) {
-             way1 = way1.removeNode(vertex.id).addNode(vertex.id, edge1.index);
-             graph = graph.replace(way1);
-           }

 
 

-           if (!isEP2 && edge2.index !== way2.nodes.indexOf(vertex.id)) {
-             way2 = way2.removeNode(vertex.id).addNode(vertex.id, edge2.index);
-             graph = graph.replace(way2);
-           }
+             if (value > Number.MAX_SAFE_INTEGER) {
+               throw new Error('integer value out of safe range');
+             }

 
 

-           return graph;
-         }
+             for (var index = 15; index >= 0; --index) {
+               this._counter[index] = value % 256;
+               value = parseInt(value / 256);
+             }
+           };

 
 

-         function cleanupIntersections(graph) {
-           for (var i = 0; i < cache.intersections.length; i++) {
-             var obj = cache.intersections[i];
-             graph = replaceMovedVertex(obj.nodeId, obj.movedId, graph, _delta);
-             graph = replaceMovedVertex(obj.nodeId, obj.unmovedId, graph, null);
-             graph = unZorroIntersection(obj, graph);
-             graph = removeDuplicateVertices(obj.movedId, graph);
-             graph = removeDuplicateVertices(obj.unmovedId, graph);
-           }
+           Counter.prototype.setBytes = function (bytes) {
+             bytes = coerceArray(bytes, true);

 
 

-           return graph;
-         } // check if moving way endpoint can cross an unmoved way, if so limit delta..
+             if (bytes.length != 16) {
+               throw new Error('invalid counter bytes size (must be 16 bytes)');
+             }

 
 

+             this._counter = bytes;
+           };

 
 

-         function limitDelta(graph) {
-           function moveNode(loc) {
-             return geoVecAdd(projection(loc), _delta);
-           }
+           Counter.prototype.increment = function () {
+             for (var i = 15; i >= 0; i--) {
+               if (this._counter[i] === 255) {
+                 this._counter[i] = 0;
+               } else {
+                 this._counter[i]++;
+                 break;
+               }
+             }
+           };
+           /**
+            *  Mode Of Operation - Counter (CTR)
+            */
+
+
+           var ModeOfOperationCTR = function ModeOfOperationCTR(key, counter) {
+             if (!(this instanceof ModeOfOperationCTR)) {
+               throw Error('AES must be instanitated with `new`');
+             }
+
+             this.description = "Counter";
+             this.name = "ctr";
+
+             if (!(counter instanceof Counter)) {
+               counter = new Counter(counter);
+             }
+
+             this._counter = counter;
+             this._remainingCounter = null;
+             this._remainingCounterIndex = 16;
+             this._aes = new AES(key);
+           };
+
+           ModeOfOperationCTR.prototype.encrypt = function (plaintext) {
+             var encrypted = coerceArray(plaintext, true);
+
+             for (var i = 0; i < encrypted.length; i++) {
+               if (this._remainingCounterIndex === 16) {
+                 this._remainingCounter = this._aes.encrypt(this._counter._counter);
+                 this._remainingCounterIndex = 0;

 
 

-           for (var i = 0; i < cache.intersections.length; i++) {
-             var obj = cache.intersections[i]; // Don't limit movement if this is vertex joins 2 endpoints..
+                 this._counter.increment();
+               }

 
 

-             if (obj.movedIsEP && obj.unmovedIsEP) continue; // Don't limit movement if this vertex is not an endpoint anyway..
+               encrypted[i] ^= this._remainingCounter[this._remainingCounterIndex++];
+             }

 
 

-             if (!obj.movedIsEP) continue;
-             var node = graph.entity(obj.nodeId);
-             var start = projection(node.loc);
-             var end = geoVecAdd(start, _delta);
-             var movedNodes = graph.childNodes(graph.entity(obj.movedId));
-             var movedPath = movedNodes.map(function (n) {
-               return moveNode(n.loc);
-             });
-             var unmovedNodes = graph.childNodes(graph.entity(obj.unmovedId));
-             var unmovedPath = unmovedNodes.map(function (n) {
-               return projection(n.loc);
-             });
-             var hits = geoPathIntersections(movedPath, unmovedPath);
+             return encrypted;
+           }; // Decryption is symetric

 
 

-             for (var j = 0; i < hits.length; i++) {
-               if (geoVecEqual(hits[j], end)) continue;
-               var edge = geoChooseEdge(unmovedNodes, end, projection);
-               _delta = geoVecSubtract(projection(edge.loc), start);
-             }
-           }
-         }

 
 

-         var action = function action(graph) {
-           if (_delta[0] === 0 && _delta[1] === 0) return graph;
-           setupCache(graph);
+           ModeOfOperationCTR.prototype.decrypt = ModeOfOperationCTR.prototype.encrypt; ///////////////////////
+           // Padding
+           // See:https://tools.ietf.org/html/rfc2315

 
 

-           if (cache.intersections.length) {
-             limitDelta(graph);
-           }
+           function pkcs7pad(data) {
+             data = coerceArray(data, true);
+             var padder = 16 - data.length % 16;
+             var result = createArray(data.length + padder);
+             copyArray(data, result);

 
 

-           for (var i = 0; i < cache.nodes.length; i++) {
-             var node = graph.entity(cache.nodes[i]);
-             var start = projection(node.loc);
-             var end = geoVecAdd(start, _delta);
-             graph = graph.replace(node.move(projection.invert(end)));
-           }
+             for (var i = data.length; i < result.length; i++) {
+               result[i] = padder;
+             }

 
 

-           if (cache.intersections.length) {
-             graph = cleanupIntersections(graph);
+             return result;

            }
 
            }
 

-           return graph;
-         };
+           function pkcs7strip(data) {
+             data = coerceArray(data, true);

 
 

-         action.delta = function () {
-           return _delta;
-         };
+             if (data.length < 16) {
+               throw new Error('PKCS#7 invalid length');
+             }

 
 

-         return action;
-       }
+             var padder = data[data.length - 1];

 
 

-       function actionMoveMember(relationId, fromIndex, toIndex) {
-         return function (graph) {
-           return graph.replace(graph.entity(relationId).moveMember(fromIndex, toIndex));
-         };
-       }
+             if (padder > 16) {
+               throw new Error('PKCS#7 padding byte out of range');
+             }

 
 

-       function actionMoveNode(nodeID, toLoc) {
-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var node = graph.entity(nodeID);
-           return graph.replace(node.move(geoVecInterp(node.loc, toLoc, t)));
-         };
+             var length = data.length - padder;

 
 

-         action.transitionable = true;
-         return action;
-       }
+             for (var i = 0; i < padder; i++) {
+               if (data[length + i] !== padder) {
+                 throw new Error('PKCS#7 invalid padding byte');
+               }
+             }

 
 

-       function actionNoop() {
-         return function (graph) {
-           return graph;
-         };
-       }
+             var result = createArray(length);
+             copyArray(data, result, 0, 0, length);
+             return result;
+           } ///////////////////////
+           // Exporting
+           // The block cipher

 
 

-       function actionOrthogonalize(wayID, projection, vertexID, degThresh, ep) {
-         var epsilon = ep || 1e-4;
-         var threshold = degThresh || 13; // degrees within right or straight to alter
-         // We test normalized dot products so we can compare as cos(angle)

 
 

-         var lowerThreshold = Math.cos((90 - threshold) * Math.PI / 180);
-         var upperThreshold = Math.cos(threshold * Math.PI / 180);
+           var aesjs = {
+             AES: AES,
+             Counter: Counter,
+             ModeOfOperation: {
+               ecb: ModeOfOperationECB,
+               cbc: ModeOfOperationCBC,
+               cfb: ModeOfOperationCFB,
+               ofb: ModeOfOperationOFB,
+               ctr: ModeOfOperationCTR
+             },
+             utils: {
+               hex: convertHex,
+               utf8: convertUtf8
+             },
+             padding: {
+               pkcs7: {
+                 pad: pkcs7pad,
+                 strip: pkcs7strip
+               }
+             },
+             _arrayTest: {
+               coerceArray: coerceArray,
+               createArray: createArray,
+               copyArray: copyArray
+             }
+           }; // node.js

 
 

-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var way = graph.entity(wayID);
-           way = way.removeNode(''); // sanity check - remove any consecutive duplicates
+           {
+             module.exports = aesjs; // RequireJS/AMD
+             // http://www.requirejs.org/docs/api.html
+             // https://github.com/amdjs/amdjs-api/wiki/AMD
+           }
+         })();
+       })(aesJs);

 
 

-           if (way.tags.nonsquare) {
-             var tags = Object.assign({}, way.tags); // since we're squaring, remove indication that this is physically unsquare
+       var aesjs = aesJs.exports;

 
 

-             delete tags.nonsquare;
-             way = way.update({
-               tags: tags
-             });
-           }
+       // We can use keys that are 128 bits (16 bytes), 192 bits (24 bytes) or 256 bits (32 bytes).
+       // To generate a random key:  window.crypto.getRandomValues(new Uint8Array(16));
+       // This default signing key is built into iD and can be used to mask/unmask sensitive values.

 
 

-           graph = graph.replace(way);
-           var isClosed = way.isClosed();
-           var nodes = graph.childNodes(way).slice(); // shallow copy
+       var DEFAULT_128 = [250, 157, 60, 79, 142, 134, 229, 129, 138, 126, 210, 129, 29, 71, 160, 208];
+       function utilAesEncrypt(text, key) {
+         key = key || DEFAULT_128;
+         var textBytes = aesjs.utils.utf8.toBytes(text);
+         var aesCtr = new aesjs.ModeOfOperation.ctr(key);
+         var encryptedBytes = aesCtr.encrypt(textBytes);
+         var encryptedHex = aesjs.utils.hex.fromBytes(encryptedBytes);
+         return encryptedHex;
+       }
+       function utilAesDecrypt(encryptedHex, key) {
+         key = key || DEFAULT_128;
+         var encryptedBytes = aesjs.utils.hex.toBytes(encryptedHex);
+         var aesCtr = new aesjs.ModeOfOperation.ctr(key);
+         var decryptedBytes = aesCtr.decrypt(encryptedBytes);
+         var text = aesjs.utils.utf8.fromBytes(decryptedBytes);
+         return text;
+       }

 
 

-           if (isClosed) nodes.pop();
+       function utilCleanTags(tags) {
+         var out = {};

 
 

-           if (vertexID !== undefined) {
-             nodes = nodeSubset(nodes, vertexID, isClosed);
-             if (nodes.length !== 3) return graph;
-           } // note: all geometry functions here use the unclosed node/point/coord list
+         for (var k in tags) {
+           if (!k) continue;
+           var v = tags[k];

 
 

+           if (v !== undefined) {
+             out[k] = cleanValue(k, v);
+           }
+         }

 
 

-           var nodeCount = {};
-           var points = [];
-           var corner = {
-             i: 0,
-             dotp: 1
-           };
-           var node, point, loc, score, motions, i, j;
+         return out;

 
 

-           for (i = 0; i < nodes.length; i++) {
-             node = nodes[i];
-             nodeCount[node.id] = (nodeCount[node.id] || 0) + 1;
-             points.push({
-               id: node.id,
-               coord: projection(node.loc)
-             });
+         function cleanValue(k, v) {
+           function keepSpaces(k) {
+             return /_hours|_times|:conditional$/.test(k);

            }
 
            }
 

-           if (points.length === 3) {
-             // move only one vertex for right triangle
-             for (i = 0; i < 1000; i++) {
-               motions = points.map(calcMotion);
-               points[corner.i].coord = geoVecAdd(points[corner.i].coord, motions[corner.i]);
-               score = corner.dotp;
+           function skip(k) {
+             return /^(description|note|fixme)$/.test(k);
+           }

 
 

-               if (score < epsilon) {
-                 break;
-               }
-             }
+           if (skip(k)) return v;
+           var cleaned = v.split(';').map(function (s) {
+             return s.trim();
+           }).join(keepSpaces(k) ? '; ' : ';'); // The code below is not intended to validate websites and emails.
+           // It is only intended to prevent obvious copy-paste errors. (#2323)
+           // clean website- and email-like tags

 
 

-             node = graph.entity(nodes[corner.i].id);
-             loc = projection.invert(points[corner.i].coord);
-             graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
-           } else {
-             var straights = [];
-             var simplified = []; // Remove points from nearly straight sections..
-             // This produces a simplified shape to orthogonalize
+           if (k.indexOf('website') !== -1 || k.indexOf('email') !== -1 || cleaned.indexOf('http') === 0) {
+             cleaned = cleaned.replace(/[\u200B-\u200F\uFEFF]/g, ''); // strip LRM and other zero width chars
+           }

 
 

-             for (i = 0; i < points.length; i++) {
-               point = points[i];
-               var dotp = 0;
+           return cleaned;
+         }
+       }

 
 

-               if (isClosed || i > 0 && i < points.length - 1) {
-                 var a = points[(i - 1 + points.length) % points.length];
-                 var b = points[(i + 1) % points.length];
-                 dotp = Math.abs(geoOrthoNormalizedDotProduct(a.coord, b.coord, point.coord));
-               }
+       var _detected;

 
 

-               if (dotp > upperThreshold) {
-                 straights.push(point);
-               } else {
-                 simplified.push(point);
-               }
-             } // Orthogonalize the simplified shape
+       function utilDetect(refresh) {
+         if (_detected && !refresh) return _detected;
+         _detected = {};
+         var ua = navigator.userAgent;
+         var m = null;
+         /* Browser */

 
 

+         m = ua.match(/(edge)\/?\s*(\.?\d+(\.\d+)*)/i); // Edge

 
 

-             var bestPoints = clonePoints(simplified);
-             var originalPoints = clonePoints(simplified);
-             score = Infinity;
+         if (m !== null) {
+           _detected.browser = m[1];
+           _detected.version = m[2];
+         }

 
 

-             for (i = 0; i < 1000; i++) {
-               motions = simplified.map(calcMotion);
+         if (!_detected.browser) {
+           m = ua.match(/Trident\/.*rv:([0-9]{1,}[\.0-9]{0,})/i); // IE11

 
 

-               for (j = 0; j < motions.length; j++) {
-                 simplified[j].coord = geoVecAdd(simplified[j].coord, motions[j]);
-               }
+           if (m !== null) {
+             _detected.browser = 'msie';
+             _detected.version = m[1];
+           }
+         }

 
 

-               var newScore = geoOrthoCalcScore(simplified, isClosed, epsilon, threshold);
+         if (!_detected.browser) {
+           m = ua.match(/(opr)\/?\s*(\.?\d+(\.\d+)*)/i); // Opera 15+

 
 

-               if (newScore < score) {
-                 bestPoints = clonePoints(simplified);
-                 score = newScore;
-               }
+           if (m !== null) {
+             _detected.browser = 'Opera';
+             _detected.version = m[2];
+           }
+         }

 
 

-               if (score < epsilon) {
-                 break;
-               }
-             }
+         if (!_detected.browser) {
+           m = ua.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);

 
 

-             var bestCoords = bestPoints.map(function (p) {
-               return p.coord;
-             });
-             if (isClosed) bestCoords.push(bestCoords[0]); // move the nodes that should move
+           if (m !== null) {
+             _detected.browser = m[1];
+             _detected.version = m[2];
+             m = ua.match(/version\/([\.\d]+)/i);
+             if (m !== null) _detected.version = m[1];
+           }
+         }

 
 

-             for (i = 0; i < bestPoints.length; i++) {
-               point = bestPoints[i];
+         if (!_detected.browser) {
+           _detected.browser = navigator.appName;
+           _detected.version = navigator.appVersion;
+         } // keep major.minor version only..

 
 

-               if (!geoVecEqual(originalPoints[i].coord, point.coord)) {
-                 node = graph.entity(point.id);
-                 loc = projection.invert(point.coord);
-                 graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
-               }
-             } // move the nodes along straight segments

 
 

+         _detected.version = _detected.version.split(/\W/).slice(0, 2).join('.'); // detect other browser capabilities
+         // Legacy Opera has incomplete svg style support. See #715

 
 

-             for (i = 0; i < straights.length; i++) {
-               point = straights[i];
-               if (nodeCount[point.id] > 1) continue; // skip self-intersections
+         _detected.opera = _detected.browser.toLowerCase() === 'opera' && parseFloat(_detected.version) < 15;

 
 

-               node = graph.entity(point.id);
+         if (_detected.browser.toLowerCase() === 'msie') {
+           _detected.ie = true;
+           _detected.browser = 'Internet Explorer';
+           _detected.support = parseFloat(_detected.version) >= 11;
+         } else {
+           _detected.ie = false;
+           _detected.support = true;
+         }

 
 

-               if (t === 1 && graph.parentWays(node).length === 1 && graph.parentRelations(node).length === 0 && !node.hasInterestingTags()) {
-                 // remove uninteresting points..
-                 graph = actionDeleteNode(node.id)(graph);
-               } else {
-                 // move interesting points to the nearest edge..
-                 var choice = geoVecProject(point.coord, bestCoords);
+         _detected.filedrop = window.FileReader && 'ondrop' in window;
+         _detected.download = !(_detected.ie || _detected.browser.toLowerCase() === 'edge');
+         _detected.cssfilters = !(_detected.ie || _detected.browser.toLowerCase() === 'edge');
+         /* Platform */

 
 

-                 if (choice) {
-                   loc = projection.invert(choice.target);
-                   graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
-                 }
-               }
-             }
-           }
+         if (/Win/.test(ua)) {
+           _detected.os = 'win';
+           _detected.platform = 'Windows';
+         } else if (/Mac/.test(ua)) {
+           _detected.os = 'mac';
+           _detected.platform = 'Macintosh';
+         } else if (/X11/.test(ua) || /Linux/.test(ua)) {
+           _detected.os = 'linux';
+           _detected.platform = 'Linux';
+         } else {
+           _detected.os = 'win';
+           _detected.platform = 'Unknown';
+         }

 
 

-           return graph;
+         _detected.isMobileWebKit = (/\b(iPad|iPhone|iPod)\b/.test(ua) || // HACK: iPadOS 13+ requests desktop sites by default by using a Mac user agent,
+         // so assume any "mac" with multitouch is actually iOS
+         navigator.platform === 'MacIntel' && 'maxTouchPoints' in navigator && navigator.maxTouchPoints > 1) && /WebKit/.test(ua) && !/Edge/.test(ua) && !window.MSStream;
+         /* Locale */
+         // An array of locales requested by the browser in priority order.

 
 

-           function clonePoints(array) {
-             return array.map(function (p) {
-               return {
-                 id: p.id,
-                 coord: [p.coord[0], p.coord[1]]
-               };
-             });
-           }
+         _detected.browserLocales = Array.from(new Set( // remove duplicates
+         [navigator.language].concat(navigator.languages || []).concat([// old property for backwards compatibility
+         navigator.userLanguage]) // remove any undefined values
+         .filter(Boolean)));
+         /* Host */

 
 

-           function calcMotion(point, i, array) {
-             // don't try to move the endpoints of a non-closed way.
-             if (!isClosed && (i === 0 || i === array.length - 1)) return [0, 0]; // don't try to move a node that appears more than once (self intersection)
+         var loc = window.top.location;
+         var origin = loc.origin;

 
 

-             if (nodeCount[array[i].id] > 1) return [0, 0];
-             var a = array[(i - 1 + array.length) % array.length].coord;
-             var origin = point.coord;
-             var b = array[(i + 1) % array.length].coord;
-             var p = geoVecSubtract(a, origin);
-             var q = geoVecSubtract(b, origin);
-             var scale = 2 * Math.min(geoVecLength(p), geoVecLength(q));
-             p = geoVecNormalize(p);
-             q = geoVecNormalize(q);
-             var dotp = p[0] * q[0] + p[1] * q[1];
-             var val = Math.abs(dotp);
+         if (!origin) {
+           // for unpatched IE11
+           origin = loc.protocol + '//' + loc.hostname + (loc.port ? ':' + loc.port : '');
+         }

 
 

-             if (val < lowerThreshold) {
-               // nearly orthogonal
-               corner.i = i;
-               corner.dotp = val;
-               var vec = geoVecNormalize(geoVecAdd(p, q));
-               return geoVecScale(vec, 0.1 * dotp * scale);
-             }
+         _detected.host = origin + loc.pathname;
+         return _detected;
+       }

 
 

-             return [0, 0]; // do nothing
+       // Like selection.property('value', ...), but avoids no-op value sets,
+       // which can result in layout/repaint thrashing in some situations.
+       function utilGetSetValue(selection, value) {
+         function d3_selection_value(value) {
+           function valueNull() {
+             delete this.value;

            }
            }

-         }; // if we are only orthogonalizing one vertex,
-         // get that vertex and the previous and next

 
 

+           function valueConstant() {
+             if (this.value !== value) {
+               this.value = value;
+             }
+           }

 
 

-         function nodeSubset(nodes, vertexID, isClosed) {
-           var first = isClosed ? 0 : 1;
-           var last = isClosed ? nodes.length : nodes.length - 1;
+           function valueFunction() {
+             var x = value.apply(this, arguments);

 
 

-           for (var i = first; i < last; i++) {
-             if (nodes[i].id === vertexID) {
-               return [nodes[(i - 1 + nodes.length) % nodes.length], nodes[i], nodes[(i + 1) % nodes.length]];
+             if (x === null || x === undefined) {
+               delete this.value;
+             } else if (this.value !== x) {
+               this.value = x;

              }
            }
 
              }
            }
 

-           return [];
+           return value === null || value === undefined ? valueNull : typeof value === 'function' ? valueFunction : valueConstant;

          }
 
          }
 

-         action.disabled = function (graph) {
-           var way = graph.entity(wayID);
-           way = way.removeNode(''); // sanity check - remove any consecutive duplicates
-
-           graph = graph.replace(way);
-           var isClosed = way.isClosed();
-           var nodes = graph.childNodes(way).slice(); // shallow copy
+         if (arguments.length === 1) {
+           return selection.property('value');
+         }

 
 

-           if (isClosed) nodes.pop();
-           var allowStraightAngles = false;
+         return selection.each(d3_selection_value(value));
+       }

 
 

-           if (vertexID !== undefined) {
-             allowStraightAngles = true;
-             nodes = nodeSubset(nodes, vertexID, isClosed);
-             if (nodes.length !== 3) return 'end_vertex';
-           }
+       function utilKeybinding(namespace) {
+         var _keybindings = {};

 
 

-           var coords = nodes.map(function (n) {
-             return projection(n.loc);
+         function testBindings(d3_event, isCapturing) {
+           var didMatch = false;
+           var bindings = Object.keys(_keybindings).map(function (id) {
+             return _keybindings[id];

            });
            });

-           var score = geoOrthoCanOrthogonalize(coords, isClosed, epsilon, threshold, allowStraightAngles);
+           var i, binding; // Most key shortcuts will accept either lower or uppercase ('h' or 'H'),
+           // so we don't strictly match on the shift key, but we prioritize
+           // shifted keybindings first, and fallback to unshifted only if no match.
+           // (This lets us differentiate between '←'/'⇧←' or '⌘Z'/'⌘⇧Z')
+           // priority match shifted keybindings first

 
 

-           if (score === null) {
-             return 'not_squarish';
-           } else if (score === 0) {
-             return 'square_enough';
-           } else {
-             return false;
+           for (i = 0; i < bindings.length; i++) {
+             binding = bindings[i];
+             if (!binding.event.modifiers.shiftKey) continue; // no shift
+
+             if (!!binding.capture !== isCapturing) continue;
+
+             if (matches(d3_event, binding, true)) {
+               binding.callback(d3_event);
+               didMatch = true; // match a max of one binding per event
+
+               break;
+             }

            }
            }

-         };

 
 

-         action.transitionable = true;
-         return action;
-       }
+           if (didMatch) return; // then unshifted keybindings

 
 

-       //
-       // `turn` must be an `osmTurn` object
-       // see osm/intersection.js, pathToTurn()
-       //
-       // This specifies a restriction of type `restriction` when traveling from
-       // `turn.from.way` toward `turn.to.way` via `turn.via.node` OR `turn.via.ways`.
-       // (The action does not check that these entities form a valid intersection.)
-       //
-       // From, to, and via ways should be split before calling this action.
-       // (old versions of the code would split the ways here, but we no longer do it)
-       //
-       // For testing convenience, accepts a restrictionID to assign to the new
-       // relation. Normally, this will be undefined and the relation will
-       // automatically be assigned a new ID.
-       //
+           for (i = 0; i < bindings.length; i++) {
+             binding = bindings[i];
+             if (binding.event.modifiers.shiftKey) continue; // shift

 
 

-       function actionRestrictTurn(turn, restrictionType, restrictionID) {
-         return function (graph) {
-           var fromWay = graph.entity(turn.from.way);
-           var toWay = graph.entity(turn.to.way);
-           var viaNode = turn.via.node && graph.entity(turn.via.node);
-           var viaWays = turn.via.ways && turn.via.ways.map(function (id) {
-             return graph.entity(id);
-           });
-           var members = [];
-           members.push({
-             id: fromWay.id,
-             type: 'way',
-             role: 'from'
-           });
+             if (!!binding.capture !== isCapturing) continue;

 
 

-           if (viaNode) {
-             members.push({
-               id: viaNode.id,
-               type: 'node',
-               role: 'via'
-             });
-           } else if (viaWays) {
-             viaWays.forEach(function (viaWay) {
-               members.push({
-                 id: viaWay.id,
-                 type: 'way',
-                 role: 'via'
-               });
-             });
+             if (matches(d3_event, binding, false)) {
+               binding.callback(d3_event);
+               break;
+             }

            }
 
            }
 

-           members.push({
-             id: toWay.id,
-             type: 'way',
-             role: 'to'
-           });
-           return graph.replace(osmRelation({
-             id: restrictionID,
-             tags: {
-               type: 'restriction',
-               restriction: restrictionType
-             },
-             members: members
-           }));
-         };
-       }
+           function matches(d3_event, binding, testShift) {
+             var event = d3_event;
+             var isMatch = false;
+             var tryKeyCode = true; // Prefer a match on `KeyboardEvent.key`

 
 

-       function actionRevert(id) {
-         var action = function action(graph) {
-           var entity = graph.hasEntity(id),
-               base = graph.base().entities[id];
+             if (event.key !== undefined) {
+               tryKeyCode = event.key.charCodeAt(0) > 255; // outside ISO-Latin-1

 
 

-           if (entity && !base) {
-             // entity will be removed..
-             if (entity.type === 'node') {
-               graph.parentWays(entity).forEach(function (parent) {
-                 parent = parent.removeNode(id);
-                 graph = graph.replace(parent);
+               isMatch = true;

 
 

-                 if (parent.isDegenerate()) {
-                   graph = actionDeleteWay(parent.id)(graph);
+               if (binding.event.key === undefined) {
+                 isMatch = false;
+               } else if (Array.isArray(binding.event.key)) {
+                 if (binding.event.key.map(function (s) {
+                   return s.toLowerCase();
+                 }).indexOf(event.key.toLowerCase()) === -1) {
+                   isMatch = false;

                  }
                  }

-               });
+               } else {
+                 if (event.key.toLowerCase() !== binding.event.key.toLowerCase()) {
+                   isMatch = false;
+                 }
+               }
+             } // Fallback match on `KeyboardEvent.keyCode`, can happen if:
+             // - browser doesn't support `KeyboardEvent.key`
+             // - `KeyboardEvent.key` is outside ISO-Latin-1 range (cyrillic?)
+
+
+             if (!isMatch && tryKeyCode) {
+               isMatch = event.keyCode === binding.event.keyCode;

              }
 
              }
 

-             graph.parentRelations(entity).forEach(function (parent) {
-               parent = parent.removeMembersWithID(id);
-               graph = graph.replace(parent);
+             if (!isMatch) return false; // test modifier keys

 
 

-               if (parent.isDegenerate()) {
-                 graph = actionDeleteRelation(parent.id)(graph);
-               }
-             });
+             if (!(event.ctrlKey && event.altKey)) {
+               // if both are set, assume AltGr and skip it - #4096
+               if (event.ctrlKey !== binding.event.modifiers.ctrlKey) return false;
+               if (event.altKey !== binding.event.modifiers.altKey) return false;
+             }
+
+             if (event.metaKey !== binding.event.modifiers.metaKey) return false;
+             if (testShift && event.shiftKey !== binding.event.modifiers.shiftKey) return false;
+             return true;

            }
            }

+         }

 
 

-           return graph.revert(id);
-         };
+         function capture(d3_event) {
+           testBindings(d3_event, true);
+         }

 
 

-         return action;
-       }
+         function bubble(d3_event) {
+           var tagName = select(d3_event.target).node().tagName;

 
 

-       function actionRotate(rotateIds, pivot, angle, projection) {
-         var action = function action(graph) {
-           return graph.update(function (graph) {
-             utilGetAllNodes(rotateIds, graph).forEach(function (node) {
-               var point = geoRotate([projection(node.loc)], angle, pivot)[0];
-               graph = graph.replace(node.move(projection.invert(point)));
-             });
-           });
-         };
+           if (tagName === 'INPUT' || tagName === 'SELECT' || tagName === 'TEXTAREA') {
+             return;
+           }

 
 

-         return action;
-       }
+           testBindings(d3_event, false);
+         }

 
 

-       function actionScale(ids, pivotLoc, scaleFactor, projection) {
-         return function (graph) {
-           return graph.update(function (graph) {
-             var point, radial;
-             utilGetAllNodes(ids, graph).forEach(function (node) {
-               point = projection(node.loc);
-               radial = [point[0] - pivotLoc[0], point[1] - pivotLoc[1]];
-               point = [pivotLoc[0] + scaleFactor * radial[0], pivotLoc[1] + scaleFactor * radial[1]];
-               graph = graph.replace(node.move(projection.invert(point)));
-             });
-           });
-         };
-       }
+         function keybinding(selection) {
+           selection = selection || select(document);
+           selection.on('keydown.capture.' + namespace, capture, true);
+           selection.on('keydown.bubble.' + namespace, bubble, false);
+           return keybinding;
+         } // was: keybinding.off()

 
 

-       /* Align nodes along their common axis */

 
 

-       function actionStraightenNodes(nodeIDs, projection) {
-         function positionAlongWay(a, o, b) {
-           return geoVecDot(a, b, o) / geoVecDot(b, b, o);
-         } // returns the endpoints of the long axis of symmetry of the `points` bounding rect
+         keybinding.unbind = function (selection) {
+           _keybindings = [];
+           selection = selection || select(document);
+           selection.on('keydown.capture.' + namespace, null);
+           selection.on('keydown.bubble.' + namespace, null);
+           return keybinding;
+         };

 
 

+         keybinding.clear = function () {
+           _keybindings = {};
+           return keybinding;
+         }; // Remove one or more keycode bindings.

 
 

-         function getEndpoints(points) {
-           var ssr = geoGetSmallestSurroundingRectangle(points); // Choose line pq = axis of symmetry.
-           // The shape's surrounding rectangle has 2 axes of symmetry.
-           // Snap points to the long axis

 
 

-           var p1 = [(ssr.poly[0][0] + ssr.poly[1][0]) / 2, (ssr.poly[0][1] + ssr.poly[1][1]) / 2];
-           var q1 = [(ssr.poly[2][0] + ssr.poly[3][0]) / 2, (ssr.poly[2][1] + ssr.poly[3][1]) / 2];
-           var p2 = [(ssr.poly[3][0] + ssr.poly[4][0]) / 2, (ssr.poly[3][1] + ssr.poly[4][1]) / 2];
-           var q2 = [(ssr.poly[1][0] + ssr.poly[2][0]) / 2, (ssr.poly[1][1] + ssr.poly[2][1]) / 2];
-           var isLong = geoVecLength(p1, q1) > geoVecLength(p2, q2);
+         keybinding.off = function (codes, capture) {
+           var arr = utilArrayUniq([].concat(codes));

 
 

-           if (isLong) {
-             return [p1, q1];
+           for (var i = 0; i < arr.length; i++) {
+             var id = arr[i] + (capture ? '-capture' : '-bubble');
+             delete _keybindings[id];

            }
 
            }
 

-           return [p2, q2];
-         }
+           return keybinding;
+         }; // Add one or more keycode bindings.

 
 

-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var nodes = nodeIDs.map(function (id) {
-             return graph.entity(id);
-           });
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var endpoints = getEndpoints(points);
-           var startPoint = endpoints[0];
-           var endPoint = endpoints[1]; // Move points onto the line connecting the endpoints

 
 

-           for (var i = 0; i < points.length; i++) {
-             var node = nodes[i];
-             var point = points[i];
-             var u = positionAlongWay(point, startPoint, endPoint);
-             var point2 = geoVecInterp(startPoint, endPoint, u);
-             var loc2 = projection.invert(point2);
-             graph = graph.replace(node.move(geoVecInterp(node.loc, loc2, t)));
+         keybinding.on = function (codes, callback, capture) {
+           if (typeof callback !== 'function') {
+             return keybinding.off(codes, capture);

            }
 
            }
 

-           return graph;
-         };
+           var arr = utilArrayUniq([].concat(codes));

 
 

-         action.disabled = function (graph) {
-           var nodes = nodeIDs.map(function (id) {
-             return graph.entity(id);
-           });
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var endpoints = getEndpoints(points);
-           var startPoint = endpoints[0];
-           var endPoint = endpoints[1];
-           var maxDistance = 0;
+           for (var i = 0; i < arr.length; i++) {
+             var id = arr[i] + (capture ? '-capture' : '-bubble');
+             var binding = {
+               id: id,
+               capture: capture,
+               callback: callback,
+               event: {
+                 key: undefined,
+                 // preferred
+                 keyCode: 0,
+                 // fallback
+                 modifiers: {
+                   shiftKey: false,
+                   ctrlKey: false,
+                   altKey: false,
+                   metaKey: false
+                 }
+               }
+             };

 
 

-           for (var i = 0; i < points.length; i++) {
-             var point = points[i];
-             var u = positionAlongWay(point, startPoint, endPoint);
-             var p = geoVecInterp(startPoint, endPoint, u);
-             var dist = geoVecLength(p, point);
+             if (_keybindings[id]) {
+               console.warn('warning: duplicate keybinding for "' + id + '"'); // eslint-disable-line no-console
+             }

 
 

-             if (!isNaN(dist) && dist > maxDistance) {
-               maxDistance = dist;
+             _keybindings[id] = binding;
+             var matches = arr[i].toLowerCase().match(/(?:(?:[^+⇧⌃⌥⌘])+|[⇧⌃⌥⌘]|\+\+|^\+$)/g);
+
+             for (var j = 0; j < matches.length; j++) {
+               // Normalise matching errors
+               if (matches[j] === '++') matches[j] = '+';
+
+               if (matches[j] in utilKeybinding.modifierCodes) {
+                 var prop = utilKeybinding.modifierProperties[utilKeybinding.modifierCodes[matches[j]]];
+                 binding.event.modifiers[prop] = true;
+               } else {
+                 binding.event.key = utilKeybinding.keys[matches[j]] || matches[j];
+
+                 if (matches[j] in utilKeybinding.keyCodes) {
+                   binding.event.keyCode = utilKeybinding.keyCodes[matches[j]];
+                 }
+               }

              }
            }
 
              }
            }
 

-           if (maxDistance < 0.0001) {
-             return 'straight_enough';
-           }
+           return keybinding;

          };
 
          };
 

-         action.transitionable = true;
-         return action;
+         return keybinding;

        }
        }

-

        /*
        /*

-        * Based on https://github.com/openstreetmap/potlatch2/net/systemeD/potlatch2/tools/Straighten.as
+        * See https://github.com/keithamus/jwerty

         */
 
         */
 

-       function actionStraightenWay(selectedIDs, projection) {
-         function positionAlongWay(a, o, b) {
-           return geoVecDot(a, b, o) / geoVecDot(b, b, o);
-         } // Return all selected ways as a continuous, ordered array of nodes
-
+       utilKeybinding.modifierCodes = {
+         // Shift key, ⇧
+         '⇧': 16,
+         shift: 16,
+         // CTRL key, on Mac: ⌃
+         '⌃': 17,
+         ctrl: 17,
+         // ALT key, on Mac: ⌥ (Alt)
+         '⌥': 18,
+         alt: 18,
+         option: 18,
+         // META, on Mac: ⌘ (CMD), on Windows (Win), on Linux (Super)
+         '⌘': 91,
+         meta: 91,
+         cmd: 91,
+         'super': 91,
+         win: 91
+       };
+       utilKeybinding.modifierProperties = {
+         16: 'shiftKey',
+         17: 'ctrlKey',
+         18: 'altKey',
+         91: 'metaKey'
+       };
+       utilKeybinding.plusKeys = ['plus', 'ffplus', '=', 'ffequals', '≠', '±'];
+       utilKeybinding.minusKeys = ['_', '-', 'ffminus', 'dash', '–', '—'];
+       utilKeybinding.keys = {
+         // Backspace key, on Mac: ⌫ (Backspace)
+         '⌫': 'Backspace',
+         backspace: 'Backspace',
+         // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥
+         '⇥': 'Tab',
+         '⇆': 'Tab',
+         tab: 'Tab',
+         // Return key, ↩
+         '↩': 'Enter',
+         '↵': 'Enter',
+         '⏎': 'Enter',
+         'return': 'Enter',
+         enter: 'Enter',
+         '⌅': 'Enter',
+         // Pause/Break key
+         'pause': 'Pause',
+         'pause-break': 'Pause',
+         // Caps Lock key, ⇪
+         '⇪': 'CapsLock',
+         caps: 'CapsLock',
+         'caps-lock': 'CapsLock',
+         // Escape key, on Mac: ⎋, on Windows: Esc
+         '⎋': ['Escape', 'Esc'],
+         escape: ['Escape', 'Esc'],
+         esc: ['Escape', 'Esc'],
+         // Space key
+         space: [' ', 'Spacebar'],
+         // Page-Up key, or pgup, on Mac: ↖
+         '↖': 'PageUp',
+         pgup: 'PageUp',
+         'page-up': 'PageUp',
+         // Page-Down key, or pgdown, on Mac: ↘
+         '↘': 'PageDown',
+         pgdown: 'PageDown',
+         'page-down': 'PageDown',
+         // END key, on Mac: ⇟
+         '⇟': 'End',
+         end: 'End',
+         // HOME key, on Mac: ⇞
+         '⇞': 'Home',
+         home: 'Home',
+         // Insert key, or ins
+         ins: 'Insert',
+         insert: 'Insert',
+         // Delete key, on Mac: ⌦ (Delete)
+         '⌦': ['Delete', 'Del'],
+         del: ['Delete', 'Del'],
+         'delete': ['Delete', 'Del'],
+         // Left Arrow Key, or ←
+         '←': ['ArrowLeft', 'Left'],
+         left: ['ArrowLeft', 'Left'],
+         'arrow-left': ['ArrowLeft', 'Left'],
+         // Up Arrow Key, or ↑
+         '↑': ['ArrowUp', 'Up'],
+         up: ['ArrowUp', 'Up'],
+         'arrow-up': ['ArrowUp', 'Up'],
+         // Right Arrow Key, or →
+         '→': ['ArrowRight', 'Right'],
+         right: ['ArrowRight', 'Right'],
+         'arrow-right': ['ArrowRight', 'Right'],
+         // Up Arrow Key, or ↓
+         '↓': ['ArrowDown', 'Down'],
+         down: ['ArrowDown', 'Down'],
+         'arrow-down': ['ArrowDown', 'Down'],
+         // odities, stuff for backward compatibility (browsers and code):
+         // Num-Multiply, or *
+         '*': ['*', 'Multiply'],
+         star: ['*', 'Multiply'],
+         asterisk: ['*', 'Multiply'],
+         multiply: ['*', 'Multiply'],
+         // Num-Plus or +
+         '+': ['+', 'Add'],
+         'plus': ['+', 'Add'],
+         // Num-Subtract, or -
+         '-': ['-', 'Subtract'],
+         subtract: ['-', 'Subtract'],
+         'dash': ['-', 'Subtract'],
+         // Semicolon
+         semicolon: ';',
+         // = or equals
+         equals: '=',
+         // Comma, or ,
+         comma: ',',
+         // Period, or ., or full-stop
+         period: '.',
+         'full-stop': '.',
+         // Slash, or /, or forward-slash
+         slash: '/',
+         'forward-slash': '/',
+         // Tick, or `, or back-quote
+         tick: '`',
+         'back-quote': '`',
+         // Open bracket, or [
+         'open-bracket': '[',
+         // Back slash, or \
+         'back-slash': '\\',
+         // Close backet, or ]
+         'close-bracket': ']',
+         // Apostrophe, or Quote, or '
+         quote: '\'',
+         apostrophe: '\'',
+         // NUMPAD 0-9
+         'num-0': '0',
+         'num-1': '1',
+         'num-2': '2',
+         'num-3': '3',
+         'num-4': '4',
+         'num-5': '5',
+         'num-6': '6',
+         'num-7': '7',
+         'num-8': '8',
+         'num-9': '9',
+         // F1-F25
+         f1: 'F1',
+         f2: 'F2',
+         f3: 'F3',
+         f4: 'F4',
+         f5: 'F5',
+         f6: 'F6',
+         f7: 'F7',
+         f8: 'F8',
+         f9: 'F9',
+         f10: 'F10',
+         f11: 'F11',
+         f12: 'F12',
+         f13: 'F13',
+         f14: 'F14',
+         f15: 'F15',
+         f16: 'F16',
+         f17: 'F17',
+         f18: 'F18',
+         f19: 'F19',
+         f20: 'F20',
+         f21: 'F21',
+         f22: 'F22',
+         f23: 'F23',
+         f24: 'F24',
+         f25: 'F25'
+       };
+       utilKeybinding.keyCodes = {
+         // Backspace key, on Mac: ⌫ (Backspace)
+         '⌫': 8,
+         backspace: 8,
+         // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥
+         '⇥': 9,
+         '⇆': 9,
+         tab: 9,
+         // Return key, ↩
+         '↩': 13,
+         '↵': 13,
+         '⏎': 13,
+         'return': 13,
+         enter: 13,
+         '⌅': 13,
+         // Pause/Break key
+         'pause': 19,
+         'pause-break': 19,
+         // Caps Lock key, ⇪
+         '⇪': 20,
+         caps: 20,
+         'caps-lock': 20,
+         // Escape key, on Mac: ⎋, on Windows: Esc
+         '⎋': 27,
+         escape: 27,
+         esc: 27,
+         // Space key
+         space: 32,
+         // Page-Up key, or pgup, on Mac: ↖
+         '↖': 33,
+         pgup: 33,
+         'page-up': 33,
+         // Page-Down key, or pgdown, on Mac: ↘
+         '↘': 34,
+         pgdown: 34,
+         'page-down': 34,
+         // END key, on Mac: ⇟
+         '⇟': 35,
+         end: 35,
+         // HOME key, on Mac: ⇞
+         '⇞': 36,
+         home: 36,
+         // Insert key, or ins
+         ins: 45,
+         insert: 45,
+         // Delete key, on Mac: ⌦ (Delete)
+         '⌦': 46,
+         del: 46,
+         'delete': 46,
+         // Left Arrow Key, or ←
+         '←': 37,
+         left: 37,
+         'arrow-left': 37,
+         // Up Arrow Key, or ↑
+         '↑': 38,
+         up: 38,
+         'arrow-up': 38,
+         // Right Arrow Key, or →
+         '→': 39,
+         right: 39,
+         'arrow-right': 39,
+         // Up Arrow Key, or ↓
+         '↓': 40,
+         down: 40,
+         'arrow-down': 40,
+         // odities, printing characters that come out wrong:
+         // Firefox Equals
+         'ffequals': 61,
+         // Num-Multiply, or *
+         '*': 106,
+         star: 106,
+         asterisk: 106,
+         multiply: 106,
+         // Num-Plus or +
+         '+': 107,
+         'plus': 107,
+         // Num-Subtract, or -
+         '-': 109,
+         subtract: 109,
+         // Vertical Bar / Pipe
+         '|': 124,
+         // Firefox Plus
+         'ffplus': 171,
+         // Firefox Minus
+         'ffminus': 173,
+         // Semicolon
+         ';': 186,
+         semicolon: 186,
+         // = or equals
+         '=': 187,
+         'equals': 187,
+         // Comma, or ,
+         ',': 188,
+         comma: 188,
+         // Dash / Underscore key
+         'dash': 189,
+         // Period, or ., or full-stop
+         '.': 190,
+         period: 190,
+         'full-stop': 190,
+         // Slash, or /, or forward-slash
+         '/': 191,
+         slash: 191,
+         'forward-slash': 191,
+         // Tick, or `, or back-quote
+         '`': 192,
+         tick: 192,
+         'back-quote': 192,
+         // Open bracket, or [
+         '[': 219,
+         'open-bracket': 219,
+         // Back slash, or \
+         '\\': 220,
+         'back-slash': 220,
+         // Close backet, or ]
+         ']': 221,
+         'close-bracket': 221,
+         // Apostrophe, or Quote, or '
+         '\'': 222,
+         quote: 222,
+         apostrophe: 222
+       }; // NUMPAD 0-9

 
 

-         function allNodes(graph) {
-           var nodes = [];
-           var startNodes = [];
-           var endNodes = [];
-           var remainingWays = [];
-           var selectedWays = selectedIDs.filter(function (w) {
-             return graph.entity(w).type === 'way';
-           });
-           var selectedNodes = selectedIDs.filter(function (n) {
-             return graph.entity(n).type === 'node';
-           });
+       var i = 95,
+           n = 0;

 
 

-           for (var i = 0; i < selectedWays.length; i++) {
-             var way = graph.entity(selectedWays[i]);
-             nodes = way.nodes.slice(0);
-             remainingWays.push(nodes);
-             startNodes.push(nodes[0]);
-             endNodes.push(nodes[nodes.length - 1]);
-           } // Remove duplicate end/startNodes (duplicate nodes cannot be at the line end,
-           //   and need to be removed so currNode difference calculation below works)
-           // i.e. ["n-1", "n-1", "n-2"] => ["n-2"]
+       while (++i < 106) {
+         utilKeybinding.keyCodes['num-' + n] = i;
+         ++n;
+       } // 0-9

 
 
 
 

-           startNodes = startNodes.filter(function (n) {
-             return startNodes.indexOf(n) === startNodes.lastIndexOf(n);
-           });
-           endNodes = endNodes.filter(function (n) {
-             return endNodes.indexOf(n) === endNodes.lastIndexOf(n);
-           }); // Choose the initial endpoint to start from
+       i = 47;
+       n = 0;

 
 

-           var currNode = utilArrayDifference(startNodes, endNodes).concat(utilArrayDifference(endNodes, startNodes))[0];
-           var nextWay = [];
-           nodes = []; // Create nested function outside of loop to avoid "function in loop" lint error
+       while (++i < 58) {
+         utilKeybinding.keyCodes[n] = i;
+         ++n;
+       } // F1-F25

 
 

-           var getNextWay = function getNextWay(currNode, remainingWays) {
-             return remainingWays.filter(function (way) {
-               return way[0] === currNode || way[way.length - 1] === currNode;
-             })[0];
-           }; // Add nodes to end of nodes array, until all ways are added

 
 

+       i = 111;
+       n = 1;

 
 

-           while (remainingWays.length) {
-             nextWay = getNextWay(currNode, remainingWays);
-             remainingWays = utilArrayDifference(remainingWays, [nextWay]);
+       while (++i < 136) {
+         utilKeybinding.keyCodes['f' + n] = i;
+         ++n;
+       } // a-z

 
 

-             if (nextWay[0] !== currNode) {
-               nextWay.reverse();
-             }

 
 

-             nodes = nodes.concat(nextWay);
-             currNode = nodes[nodes.length - 1];
-           } // If user selected 2 nodes to straighten between, then slice nodes array to those nodes
+       i = 64;

 
 

+       while (++i < 91) {
+         utilKeybinding.keyCodes[String.fromCharCode(i).toLowerCase()] = i;
+       }

 
 

-           if (selectedNodes.length === 2) {
-             var startNodeIdx = nodes.indexOf(selectedNodes[0]);
-             var endNodeIdx = nodes.indexOf(selectedNodes[1]);
-             var sortedStartEnd = [startNodeIdx, endNodeIdx];
-             sortedStartEnd.sort(function (a, b) {
-               return a - b;
-             });
-             nodes = nodes.slice(sortedStartEnd[0], sortedStartEnd[1] + 1);
+       function utilObjectOmit(obj, omitKeys) {
+         return Object.keys(obj).reduce(function (result, key) {
+           if (omitKeys.indexOf(key) === -1) {
+             result[key] = obj[key]; // keep

            }
 
            }
 

-           return nodes.map(function (n) {
-             return graph.entity(n);
-           });
-         }
-
-         function shouldKeepNode(node, graph) {
-           return graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags();
-         }
-
-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var nodes = allNodes(graph);
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var startPoint = points[0];
-           var endPoint = points[points.length - 1];
-           var toDelete = [];
-           var i;
+           return result;
+         }, {});
+       }

 
 

-           for (i = 1; i < points.length - 1; i++) {
-             var node = nodes[i];
-             var point = points[i];
+       // Copies a variable number of methods from source to target.
+       function utilRebind(target, source) {
+         var i = 1,
+             n = arguments.length,
+             method;

 
 

-             if (t < 1 || shouldKeepNode(node, graph)) {
-               var u = positionAlongWay(point, startPoint, endPoint);
-               var p = geoVecInterp(startPoint, endPoint, u);
-               var loc2 = projection.invert(p);
-               graph = graph.replace(node.move(geoVecInterp(node.loc, loc2, t)));
-             } else {
-               // safe to delete
-               if (toDelete.indexOf(node) === -1) {
-                 toDelete.push(node);
-               }
-             }
-           }
+         while (++i < n) {
+           target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+         }

 
 

-           for (i = 0; i < toDelete.length; i++) {
-             graph = actionDeleteNode(toDelete[i].id)(graph);
-           }
+         return target;
+       } // Method is assumed to be a standard D3 getter-setter:
+       // If passed with no arguments, gets the value.
+       // If passed with arguments, sets the value and returns the target.

 
 

-           return graph;
+       function d3_rebind(target, source, method) {
+         return function () {
+           var value = method.apply(source, arguments);
+           return value === source ? target : value;

          };
          };

+       }

 
 

-         action.disabled = function (graph) {
-           // check way isn't too bendy
-           var nodes = allNodes(graph);
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var startPoint = points[0];
-           var endPoint = points[points.length - 1];
-           var threshold = 0.2 * geoVecLength(startPoint, endPoint);
-           var i;
-
-           if (threshold === 0) {
-             return 'too_bendy';
-           }
-
-           var maxDistance = 0;
-
-           for (i = 1; i < points.length - 1; i++) {
-             var point = points[i];
-             var u = positionAlongWay(point, startPoint, endPoint);
-             var p = geoVecInterp(startPoint, endPoint, u);
-             var dist = geoVecLength(p, point); // to bendy if point is off by 20% of total start/end distance in projected space
-
-             if (isNaN(dist) || dist > threshold) {
-               return 'too_bendy';
-             } else if (dist > maxDistance) {
-               maxDistance = dist;
-             }
-           }
+       // A per-domain session mutex backed by a cookie and dead man's
+       // switch. If the session crashes, the mutex will auto-release
+       // after 5 seconds.
+       // This accepts a string and returns an object that complies with utilSessionMutexType
+       function utilSessionMutex(name) {
+         var mutex = {};
+         var intervalID;

 
 

-           var keepingAllNodes = nodes.every(function (node, i) {
-             return i === 0 || i === nodes.length - 1 || shouldKeepNode(node, graph);
-           });
+         function renew() {
+           var expires = new Date();
+           expires.setSeconds(expires.getSeconds() + 5);
+           document.cookie = name + '=1; expires=' + expires.toUTCString() + '; sameSite=strict';
+         }

 
 

-           if (maxDistance < 0.0001 && // Allow straightening even if already straight in order to remove extraneous nodes
-           keepingAllNodes) {
-             return 'straight_enough';
-           }
+         mutex.lock = function () {
+           if (intervalID) return true;
+           var cookie = document.cookie.replace(new RegExp('(?:(?:^|.*;)\\s*' + name + '\\s*\\=\\s*([^;]*).*$)|^.*$'), '$1');
+           if (cookie) return false;
+           renew();
+           intervalID = window.setInterval(renew, 4000);
+           return true;

          };
 
          };
 

-         action.transitionable = true;
-         return action;
-       }
-
-       //
-       // `turn` must be an `osmTurn` object with a `restrictionID` property.
-       // see osm/intersection.js, pathToTurn()
-       //
-
-       function actionUnrestrictTurn(turn) {
-         return function (graph) {
-           return actionDeleteRelation(turn.restrictionID)(graph);
+         mutex.unlock = function () {
+           if (!intervalID) return;
+           document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT; sameSite=strict';
+           clearInterval(intervalID);
+           intervalID = null;

          };
          };

-       }
-
-       /* Reflect the given area around its axis of symmetry */
-
-       function actionReflect(reflectIds, projection) {
-         var _useLongAxis = true;

 
 

-         var action = function action(graph, t) {
-           if (t === null || !isFinite(t)) t = 1;
-           t = Math.min(Math.max(+t, 0), 1);
-           var nodes = utilGetAllNodes(reflectIds, graph);
-           var points = nodes.map(function (n) {
-             return projection(n.loc);
-           });
-           var ssr = geoGetSmallestSurroundingRectangle(points); // Choose line pq = axis of symmetry.
-           // The shape's surrounding rectangle has 2 axes of symmetry.
-           // Reflect across the longer axis by default.
+         mutex.locked = function () {
+           return !!intervalID;
+         };

 
 

-           var p1 = [(ssr.poly[0][0] + ssr.poly[1][0]) / 2, (ssr.poly[0][1] + ssr.poly[1][1]) / 2];
-           var q1 = [(ssr.poly[2][0] + ssr.poly[3][0]) / 2, (ssr.poly[2][1] + ssr.poly[3][1]) / 2];
-           var p2 = [(ssr.poly[3][0] + ssr.poly[4][0]) / 2, (ssr.poly[3][1] + ssr.poly[4][1]) / 2];
-           var q2 = [(ssr.poly[1][0] + ssr.poly[2][0]) / 2, (ssr.poly[1][1] + ssr.poly[2][1]) / 2];
-           var p, q;
-           var isLong = geoVecLength(p1, q1) > geoVecLength(p2, q2);
+         return mutex;
+       }

 
 

-           if (_useLongAxis && isLong || !_useLongAxis && !isLong) {
-             p = p1;
-             q = q1;
-           } else {
-             p = p2;
-             q = q2;
-           } // reflect c across pq
-           // http://math.stackexchange.com/questions/65503/point-reflection-over-a-line
+       function utilTiler() {
+         var _size = [256, 256];
+         var _scale = 256;
+         var _tileSize = 256;
+         var _zoomExtent = [0, 20];
+         var _translate = [_size[0] / 2, _size[1] / 2];
+         var _margin = 0;
+         var _skipNullIsland = false;

 
 

+         function clamp(num, min, max) {
+           return Math.max(min, Math.min(num, max));
+         }

 
 

-           var dx = q[0] - p[0];
-           var dy = q[1] - p[1];
-           var a = (dx * dx - dy * dy) / (dx * dx + dy * dy);
-           var b = 2 * dx * dy / (dx * dx + dy * dy);
+         function nearNullIsland(tile) {
+           var x = tile[0];
+           var y = tile[1];
+           var z = tile[2];

 
 

-           for (var i = 0; i < nodes.length; i++) {
-             var node = nodes[i];
-             var c = projection(node.loc);
-             var c2 = [a * (c[0] - p[0]) + b * (c[1] - p[1]) + p[0], b * (c[0] - p[0]) - a * (c[1] - p[1]) + p[1]];
-             var loc2 = projection.invert(c2);
-             node = node.move(geoVecInterp(node.loc, loc2, t));
-             graph = graph.replace(node);
+           if (z >= 7) {
+             var center = Math.pow(2, z - 1);
+             var width = Math.pow(2, z - 6);
+             var min = center - width / 2;
+             var max = center + width / 2 - 1;
+             return x >= min && x <= max && y >= min && y <= max;

            }
 
            }
 

-           return graph;
-         };
-
-         action.useLongAxis = function (val) {
-           if (!arguments.length) return _useLongAxis;
-           _useLongAxis = val;
-           return action;
-         };
-
-         action.transitionable = true;
-         return action;
-       }
-
-       function actionUpgradeTags(entityId, oldTags, replaceTags) {
-         return function (graph) {
-           var entity = graph.entity(entityId);
-           var tags = Object.assign({}, entity.tags); // shallow copy
+           return false;
+         }

 
 

-           var transferValue;
-           var semiIndex;
+         function tiler() {
+           var z = geoScaleToZoom(_scale / (2 * Math.PI), _tileSize);
+           var z0 = clamp(Math.round(z), _zoomExtent[0], _zoomExtent[1]);
+           var tileMin = 0;
+           var tileMax = Math.pow(2, z0) - 1;
+           var log2ts = Math.log(_tileSize) * Math.LOG2E;
+           var k = Math.pow(2, z - z0 + log2ts);
+           var origin = [(_translate[0] - _scale / 2) / k, (_translate[1] - _scale / 2) / k];
+           var cols = range$1(clamp(Math.floor(-origin[0]) - _margin, tileMin, tileMax + 1), clamp(Math.ceil(_size[0] / k - origin[0]) + _margin, tileMin, tileMax + 1));
+           var rows = range$1(clamp(Math.floor(-origin[1]) - _margin, tileMin, tileMax + 1), clamp(Math.ceil(_size[1] / k - origin[1]) + _margin, tileMin, tileMax + 1));
+           var tiles = [];

 
 

-           for (var oldTagKey in oldTags) {
-             if (!(oldTagKey in tags)) continue; // wildcard match
+           for (var i = 0; i < rows.length; i++) {
+             var y = rows[i];

 
 

-             if (oldTags[oldTagKey] === '*') {
-               // note the value since we might need to transfer it
-               transferValue = tags[oldTagKey];
-               delete tags[oldTagKey]; // exact match
-             } else if (oldTags[oldTagKey] === tags[oldTagKey]) {
-               delete tags[oldTagKey]; // match is within semicolon-delimited values
-             } else {
-               var vals = tags[oldTagKey].split(';').filter(Boolean);
-               var oldIndex = vals.indexOf(oldTags[oldTagKey]);
+             for (var j = 0; j < cols.length; j++) {
+               var x = cols[j];

 
 

-               if (vals.length === 1 || oldIndex === -1) {
-                 delete tags[oldTagKey];
+               if (i >= _margin && i <= rows.length - _margin && j >= _margin && j <= cols.length - _margin) {
+                 tiles.unshift([x, y, z0]); // tiles in view at beginning

                } else {
                } else {

-                 if (replaceTags && replaceTags[oldTagKey]) {
-                   // replacing a value within a semicolon-delimited value, note the index
-                   semiIndex = oldIndex;
-                 }
-
-                 vals.splice(oldIndex, 1);
-                 tags[oldTagKey] = vals.join(';');
+                 tiles.push([x, y, z0]); // tiles in margin at the end

                }
              }
            }
 
                }
              }
            }
 

-           if (replaceTags) {
-             for (var replaceKey in replaceTags) {
-               var replaceValue = replaceTags[replaceKey];
+           tiles.translate = origin;
+           tiles.scale = k;
+           return tiles;
+         }
+         /**
+          * getTiles() returns an array of tiles that cover the map view
+          */

 
 

-               if (replaceValue === '*') {
-                 if (tags[replaceKey] && tags[replaceKey] !== 'no') {
-                   // allow any pre-existing value except `no` (troll tag)
-                   continue;
-                 } else {
-                   // otherwise assume `yes` is okay
-                   tags[replaceKey] = 'yes';
-                 }
-               } else if (replaceValue === '$1') {
-                 tags[replaceKey] = transferValue;
-               } else {
-                 if (tags[replaceKey] && oldTags[replaceKey] && semiIndex !== undefined) {
-                   // don't override preexisting values
-                   var existingVals = tags[replaceKey].split(';').filter(Boolean);

 
 

-                   if (existingVals.indexOf(replaceValue) === -1) {
-                     existingVals.splice(semiIndex, 0, replaceValue);
-                     tags[replaceKey] = existingVals.join(';');
-                   }
-                 } else {
-                   tags[replaceKey] = replaceValue;
-                 }
-               }
+         tiler.getTiles = function (projection) {
+           var origin = [projection.scale() * Math.PI - projection.translate()[0], projection.scale() * Math.PI - projection.translate()[1]];
+           this.size(projection.clipExtent()[1]).scale(projection.scale() * 2 * Math.PI).translate(projection.translate());
+           var tiles = tiler();
+           var ts = tiles.scale;
+           return tiles.map(function (tile) {
+             if (_skipNullIsland && nearNullIsland(tile)) {
+               return false;

              }
              }

-           }

 
 

-           return graph.replace(entity.update({
-             tags: tags
-           }));
+             var x = tile[0] * ts - origin[0];
+             var y = tile[1] * ts - origin[1];
+             return {
+               id: tile.toString(),
+               xyz: tile,
+               extent: geoExtent(projection.invert([x, y + ts]), projection.invert([x + ts, y]))
+             };
+           }).filter(Boolean);

          };
          };

-       }
+         /**
+          * getGeoJSON() returns a FeatureCollection for debugging tiles
+          */

 
 

-       function behaviorEdit(context) {
-         function behavior() {
-           context.map().minzoom(context.minEditableZoom());
-         }

 
 

-         behavior.off = function () {
-           context.map().minzoom(0);
+         tiler.getGeoJSON = function (projection) {
+           var features = tiler.getTiles(projection).map(function (tile) {
+             return {
+               type: 'Feature',
+               properties: {
+                 id: tile.id,
+                 name: tile.id
+               },
+               geometry: {
+                 type: 'Polygon',
+                 coordinates: [tile.extent.polygon()]
+               }
+             };
+           });
+           return {
+             type: 'FeatureCollection',
+             features: features
+           };

          };
 
          };
 

-         return behavior;
-       }
+         tiler.tileSize = function (val) {
+           if (!arguments.length) return _tileSize;
+           _tileSize = val;
+           return tiler;
+         };

 
 

-       /*
-          The hover behavior adds the `.hover` class on pointerover to all elements to which
-          the identical datum is bound, and removes it on pointerout.
+         tiler.zoomExtent = function (val) {
+           if (!arguments.length) return _zoomExtent;
+           _zoomExtent = val;
+           return tiler;
+         };

 
 

-          The :hover pseudo-class is insufficient for iD's purposes because a datum's visual
-          representation may consist of several elements scattered throughout the DOM hierarchy.
-          Only one of these elements can have the :hover pseudo-class, but all of them will
-          have the .hover class.
-        */
+         tiler.size = function (val) {
+           if (!arguments.length) return _size;
+           _size = val;
+           return tiler;
+         };

 
 

-       function behaviorHover(context) {
-         var dispatch$1 = dispatch('hover');
+         tiler.scale = function (val) {
+           if (!arguments.length) return _scale;
+           _scale = val;
+           return tiler;
+         };

 
 

-         var _selection = select(null);
+         tiler.translate = function (val) {
+           if (!arguments.length) return _translate;
+           _translate = val;
+           return tiler;
+         }; // number to extend the rows/columns beyond those covering the viewport

 
 

-         var _newNodeId = null;
-         var _initialNodeID = null;

 
 

-         var _altDisables;
+         tiler.margin = function (val) {
+           if (!arguments.length) return _margin;
+           _margin = +val;
+           return tiler;
+         };

 
 

-         var _ignoreVertex;
+         tiler.skipNullIsland = function (val) {
+           if (!arguments.length) return _skipNullIsland;
+           _skipNullIsland = val;
+           return tiler;
+         };

 
 

-         var _targets = []; // use pointer events on supported platforms; fallback to mouse events
+         return tiler;
+       }
+
+       function utilTriggerEvent(target, type) {
+         target.each(function () {
+           var evt = document.createEvent('HTMLEvents');
+           evt.initEvent(type, true, true);
+           this.dispatchEvent(evt);
+         });
+       }

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+       var _mainLocations = coreLocations(); // singleton
+       // `coreLocations` maintains an internal index of all the boundaries/geofences used by iD.
+       // It's used by presets, community index, background imagery, to know where in the world these things are valid.
+       // These geofences should be defined by `locationSet` objects:
+       //
+       // let locationSet = {
+       //   include: [ Array of locations ],
+       //   exclude: [ Array of locations ]
+       // };
+       //
+       // For more info see the location-conflation and country-coder projects, see:
+       // https://github.com/ideditor/location-conflation
+       // https://github.com/ideditor/country-coder
+       //

 
 

-         function keydown(d3_event) {
-           if (_altDisables && d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             _selection.selectAll('.hover').classed('hover-suppressed', true).classed('hover', false);
+       function coreLocations() {
+         var _this = {};
+         var _resolvedFeatures = {}; // cache of *resolved* locationSet features

 
 

-             _selection.classed('hover-disabled', true);
+         var _loco = new _default(); // instance of a location-conflation resolver

 
 

-             dispatch$1.call('hover', this, null);
-           }
-         }

 
 

-         function keyup(d3_event) {
-           if (_altDisables && d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             _selection.selectAll('.hover-suppressed').classed('hover-suppressed', false).classed('hover', true);
+         var _wp; // instance of a which-polygon index
+         // pre-resolve the worldwide locationSet

 
 

-             _selection.classed('hover-disabled', false);

 
 

-             dispatch$1.call('hover', this, _targets);
+         var world = {
+           locationSet: {
+             include: ['Q2']

            }
            }

-         }
+         };
+         resolveLocationSet(world);
+         rebuildIndex();
+         var _queue = [];

 
 

-         function behavior(selection) {
-           _selection = selection;
-           _targets = [];
+         var _deferred = new Set();

 
 

-           if (_initialNodeID) {
-             _newNodeId = _initialNodeID;
-             _initialNodeID = null;
-           } else {
-             _newNodeId = null;
-           }
+         var _inProcess; // Returns a Promise to process the queue

 
 

-           _selection.on(_pointerPrefix + 'over.hover', pointerover).on(_pointerPrefix + 'out.hover', pointerout) // treat pointerdown as pointerover for touch devices
-           .on(_pointerPrefix + 'down.hover', pointerover);

 
 

-           select(window).on(_pointerPrefix + 'up.hover pointercancel.hover', pointerout, true).on('keydown.hover', keydown).on('keyup.hover', keyup);
+         function processQueue() {
+           if (!_queue.length) return Promise.resolve(); // console.log(`queue length ${_queue.length}`);

 
 

-           function eventTarget(d3_event) {
-             var datum = d3_event.target && d3_event.target.__data__;
-             if (_typeof(datum) !== 'object') return null;
+           var chunk = _queue.pop();

 
 

-             if (!(datum instanceof osmEntity) && datum.properties && datum.properties.entity instanceof osmEntity) {
-               return datum.properties.entity;
-             }
+           return new Promise(function (resolvePromise) {
+             var handle = window.requestIdleCallback(function () {
+               _deferred["delete"](handle); // const t0 = performance.now();

 
 

-             return datum;
-           }

 
 

-           function pointerover(d3_event) {
-             // ignore mouse hovers with buttons pressed unless dragging
-             if (context.mode().id.indexOf('drag') === -1 && (!d3_event.pointerType || d3_event.pointerType === 'mouse') && d3_event.buttons) return;
-             var target = eventTarget(d3_event);
+               chunk.forEach(resolveLocationSet); // const t1 = performance.now();
+               // console.log('chunk processed in ' + (t1 - t0) + ' ms');

 
 

-             if (target && _targets.indexOf(target) === -1) {
-               _targets.push(target);
+               resolvePromise();
+             });

 
 

-               updateHover(d3_event, _targets);
-             }
-           }
+             _deferred.add(handle);
+           }).then(function () {
+             return processQueue();
+           });
+         } // Pass an Object with a `locationSet` property,
+         // Performs the locationSet resolution, caches the result, and sets a `locationSetID` property on the object.

 
 

-           function pointerout(d3_event) {
-             var target = eventTarget(d3_event);

 
 

-             var index = _targets.indexOf(target);
+         function resolveLocationSet(obj) {
+           if (obj.locationSetID) return; // work was done already

 
 

-             if (index !== -1) {
-               _targets.splice(index);
+           try {
+             var locationSet = obj.locationSet;

 
 

-               updateHover(d3_event, _targets);
+             if (!locationSet) {
+               throw new Error('object missing locationSet property');

              }
              }

-           }
-
-           function allowsVertex(d) {
-             return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
-           }
-
-           function modeAllowsHover(target) {
-             var mode = context.mode();

 
 

-             if (mode.id === 'add-point') {
-               return mode.preset.matchGeometry('vertex') || target.type !== 'way' && target.geometry(context.graph()) !== 'vertex';
+             if (!locationSet.include) {
+               // missing `include`, default to worldwide include
+               locationSet.include = ['Q2']; // https://github.com/openstreetmap/iD/pull/8305#discussion_r662344647

              }
 
              }
 

-             return true;
-           }
-
-           function updateHover(d3_event, targets) {
-             _selection.selectAll('.hover').classed('hover', false);
-
-             _selection.selectAll('.hover-suppressed').classed('hover-suppressed', false);
+             var resolved = _loco.resolveLocationSet(locationSet);

 
 

-             var mode = context.mode();
+             var locationSetID = resolved.id;
+             obj.locationSetID = locationSetID;

 
 

-             if (!_newNodeId && (mode.id === 'draw-line' || mode.id === 'draw-area')) {
-               var node = targets.find(function (target) {
-                 return target instanceof osmEntity && target.type === 'node';
-               });
-               _newNodeId = node && node.id;
+             if (!resolved.feature.geometry.coordinates.length || !resolved.feature.properties.area) {
+               throw new Error("locationSet ".concat(locationSetID, " resolves to an empty feature."));

              }
 
              }
 

-             targets = targets.filter(function (datum) {
-               if (datum instanceof osmEntity) {
-                 // If drawing a way, don't hover on a node that was just placed. #3974
-                 return datum.id !== _newNodeId && (datum.type !== 'node' || !_ignoreVertex || allowsVertex(datum)) && modeAllowsHover(datum);
-               }
-
-               return true;
-             });
-             var selector = '';
-
-             for (var i in targets) {
-               var datum = targets[i]; // What are we hovering over?
+             if (!_resolvedFeatures[locationSetID]) {
+               // First time seeing this locationSet feature
+               var feature = JSON.parse(JSON.stringify(resolved.feature)); // deep clone

 
 

-               if (datum.__featurehash__) {
-                 // hovering custom data
-                 selector += ', .data' + datum.__featurehash__;
-               } else if (datum instanceof QAItem) {
-                 selector += ', .' + datum.service + '.itemId-' + datum.id;
-               } else if (datum instanceof osmNote) {
-                 selector += ', .note-' + datum.id;
-               } else if (datum instanceof osmEntity) {
-                 selector += ', .' + datum.id;
+               feature.id = locationSetID; // Important: always use the locationSet `id` (`+[Q30]`), not the feature `id` (`Q30`)

 
 

-                 if (datum.type === 'relation') {
-                   for (var j in datum.members) {
-                     selector += ', .' + datum.members[j].id;
-                   }
-                 }
-               }
+               feature.properties.id = locationSetID;
+               _resolvedFeatures[locationSetID] = feature; // insert into cache

              }
              }

+           } catch (err) {
+             obj.locationSet = {
+               include: ['Q2']
+             }; // default worldwide

 
 

-             var suppressed = _altDisables && d3_event && d3_event.altKey;
+             obj.locationSetID = '+[Q2]';
+           }
+         } // Rebuilds the whichPolygon index with whatever features have been resolved.

 
 

-             if (selector.trim().length) {
-               // remove the first comma
-               selector = selector.slice(1);

 
 

-               _selection.selectAll(selector).classed(suppressed ? 'hover-suppressed' : 'hover', true);
-             }
+         function rebuildIndex() {
+           _wp = whichPolygon_1({
+             features: Object.values(_resolvedFeatures)
+           });
+         } //
+         // `mergeCustomGeoJSON`
+         //  Accepts an FeatureCollection-like object containing custom locations
+         //  Each feature must have a filename-like `id`, for example: `something.geojson`
+         //
+         //  {
+         //    "type": "FeatureCollection"
+         //    "features": [
+         //      {
+         //        "type": "Feature",
+         //        "id": "philly_metro.geojson",
+         //        "properties": { … },
+         //        "geometry": { … }
+         //      }
+         //    ]
+         //  }
+         //

 
 

-             dispatch$1.call('hover', this, !suppressed && targets);
-           }
-         }

 
 

-         behavior.off = function (selection) {
-           selection.selectAll('.hover').classed('hover', false);
-           selection.selectAll('.hover-suppressed').classed('hover-suppressed', false);
-           selection.classed('hover-disabled', false);
-           selection.on(_pointerPrefix + 'over.hover', null).on(_pointerPrefix + 'out.hover', null).on(_pointerPrefix + 'down.hover', null);
-           select(window).on(_pointerPrefix + 'up.hover pointercancel.hover', null, true).on('keydown.hover', null).on('keyup.hover', null);
-         };
+         _this.mergeCustomGeoJSON = function (fc) {
+           if (fc && fc.type === 'FeatureCollection' && Array.isArray(fc.features)) {
+             fc.features.forEach(function (feature) {
+               feature.properties = feature.properties || {};
+               var props = feature.properties; // Get `id` from either `id` or `properties`

 
 

-         behavior.altDisables = function (val) {
-           if (!arguments.length) return _altDisables;
-           _altDisables = val;
-           return behavior;
-         };
+               var id = feature.id || props.id;
+               if (!id || !/^\S+\.geojson$/i.test(id)) return; // Ensure `id` exists and is lowercase

 
 

-         behavior.ignoreVertex = function (val) {
-           if (!arguments.length) return _ignoreVertex;
-           _ignoreVertex = val;
-           return behavior;
-         };
+               id = id.toLowerCase();
+               feature.id = id;
+               props.id = id; // Ensure `area` property exists

 
 

-         behavior.initialNodeID = function (nodeId) {
-           _initialNodeID = nodeId;
-           return behavior;
-         };
+               if (!props.area) {
+                 var area = geojsonArea.geometry(feature.geometry) / 1e6; // m² to km²

 
 

-         return utilRebind(behavior, dispatch$1, 'on');
-       }
+                 props.area = Number(area.toFixed(2));
+               }

 
 

-       var _disableSpace = false;
-       var _lastSpace = null;
-       function behaviorDraw(context) {
-         var dispatch$1 = dispatch('move', 'down', 'downcancel', 'click', 'clickWay', 'clickNode', 'undo', 'cancel', 'finish');
-         var keybinding = utilKeybinding('draw');
+               _loco._cache[id] = feature;
+             });
+           }
+         }; //
+         // `mergeLocationSets`
+         //  Accepts an Array of Objects containing `locationSet` properties.
+         //  The locationSets will be resolved and indexed in the background.
+         //  [
+         //   { id: 'preset1', locationSet: {…} },
+         //   { id: 'preset2', locationSet: {…} },
+         //   { id: 'preset3', locationSet: {…} },
+         //   …
+         //  ]
+         //  After resolving and indexing, the Objects will be decorated with a
+         //  `locationSetID` property.
+         //  [
+         //   { id: 'preset1', locationSet: {…}, locationSetID: '+[Q2]' },
+         //   { id: 'preset2', locationSet: {…}, locationSetID: '+[Q30]' },
+         //   { id: 'preset3', locationSet: {…}, locationSetID: '+[Q2]' },
+         //   …
+         //  ]
+         //
+         //  Returns a Promise fulfilled when the resolving/indexing has been completed
+         //  This will take some seconds but happen in the background during browser idle time.
+         //

 
 

-         var _hover = behaviorHover(context).altDisables(true).ignoreVertex(true).on('hover', context.ui().sidebar.hover);

 
 

-         var _edit = behaviorEdit(context);
+         _this.mergeLocationSets = function (objects) {
+           if (!Array.isArray(objects)) return Promise.reject('nothing to do'); // Resolve all locationSets -> geojson, processing data in chunks
+           //
+           // Because this will happen during idle callbacks, we want to choose a chunk size
+           // that won't make the browser stutter too badly.  LocationSets that are a simple
+           // country coder include will resolve instantly, but ones that involve complex
+           // include/exclude operations will take some milliseconds longer.
+           //
+           // Some discussion and performance results on these tickets:
+           // https://github.com/ideditor/location-conflation/issues/26
+           // https://github.com/osmlab/name-suggestion-index/issues/4784#issuecomment-742003434

 
 

-         var _closeTolerance = 4;
-         var _tolerance = 12;
-         var _mouseLeave = false;
-         var _lastMouse = null;
+           _queue = _queue.concat(utilArrayChunk(objects, 200));

 
 

-         var _lastPointerUpEvent;
+           if (!_inProcess) {
+             _inProcess = processQueue().then(function () {
+               rebuildIndex();
+               _inProcess = null;
+               return objects;
+             });
+           }

 
 

-         var _downPointer; // use pointer events on supported platforms; fallback to mouse events
+           return _inProcess;
+         }; //
+         // `locationSetID`
+         // Returns a locationSetID for a given locationSet (fallback to `+[Q2]`, world)
+         // (The locationset doesn't necessarily need to be resolved to compute its `id`)
+         //
+         // Arguments
+         //   `locationSet`: A locationSet, e.g. `{ include: ['us'] }`
+         // Returns
+         //   The locationSetID, e.g. `+[Q30]`
+         //

 
 
 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // related code
-         // - `mode/drag_node.js` `datum()`
+         _this.locationSetID = function (locationSet) {
+           var locationSetID;

 
 

+           try {
+             locationSetID = _loco.validateLocationSet(locationSet).id;
+           } catch (err) {
+             locationSetID = '+[Q2]'; // the world
+           }

 
 

-         function datum(d3_event) {
-           var mode = context.mode();
-           var isNote = mode && mode.id.indexOf('note') !== -1;
-           if (d3_event.altKey || isNote) return {};
-           var element;
+           return locationSetID;
+         }; //
+         // `feature`
+         // Returns the resolved GeoJSON feature for a given locationSetID (fallback to 'world')
+         //
+         // Arguments
+         //   `locationSetID`: id of the form like `+[Q30]`  (United States)
+         // Returns
+         //   A GeoJSON feature:
+         //   {
+         //     type: 'Feature',
+         //     id: '+[Q30]',
+         //     properties: { id: '+[Q30]', area: 21817019.17, … },
+         //     geometry: { … }
+         //   }

 
 

-           if (d3_event.type === 'keydown') {
-             element = _lastMouse && _lastMouse.target;
-           } else {
-             element = d3_event.target;
-           } // When drawing, snap only to touch targets..
-           // (this excludes area fills and active drawing elements)

 
 

+         _this.feature = function (locationSetID) {
+           return _resolvedFeatures[locationSetID] || _resolvedFeatures['+[Q2]'];
+         }; //
+         // `locationsAt`
+         // Find all the resolved locationSets valid at the given location.
+         // Results include the area (in km²) to facilitate sorting.
+         //
+         // Arguments
+         //   `loc`: the [lon,lat] location to query, e.g. `[-74.4813, 40.7967]`
+         // Returns
+         //   Object of locationSetIDs to areas (in km²)
+         //   {
+         //     "+[Q2]": 511207893.3958111,
+         //     "+[Q30]": 21817019.17,
+         //     "+[new_jersey.geojson]": 22390.77,
+         //     …
+         //   }
+         //

 
 

-           var d = element.__data__;
-           return d && d.properties && d.properties.target ? d : {};
-         }

 
 

-         function pointerdown(d3_event) {
-           if (_downPointer) return;
-           var pointerLocGetter = utilFastMouse(this);
-           _downPointer = {
-             id: d3_event.pointerId || 'mouse',
-             pointerLocGetter: pointerLocGetter,
-             downTime: +new Date(),
-             downLoc: pointerLocGetter(d3_event)
-           };
-           dispatch$1.call('down', this, d3_event, datum(d3_event));
-         }
+         _this.locationsAt = function (loc) {
+           var result = {};
+           (_wp(loc, true) || []).forEach(function (prop) {
+             return result[prop.id] = prop.area;
+           });
+           return result;
+         }; //
+         // `query`
+         // Execute a query directly against which-polygon
+         // https://github.com/mapbox/which-polygon
+         //
+         // Arguments
+         //   `loc`: the [lon,lat] location to query,
+         //   `multi`: `true` to return all results, `false` to return first result
+         // Returns
+         //   Array of GeoJSON *properties* for the locationSet features that exist at `loc`
+         //

 
 

-         function pointerup(d3_event) {
-           if (!_downPointer || _downPointer.id !== (d3_event.pointerId || 'mouse')) return;
-           var downPointer = _downPointer;
-           _downPointer = null;
-           _lastPointerUpEvent = d3_event;
-           if (downPointer.isCancelled) return;
-           var t2 = +new Date();
-           var p2 = downPointer.pointerLocGetter(d3_event);
-           var dist = geoVecLength(downPointer.downLoc, p2);

 
 

-           if (dist < _closeTolerance || dist < _tolerance && t2 - downPointer.downTime < 500) {
-             // Prevent a quick second click
-             select(window).on('click.draw-block', function () {
-               d3_event.stopPropagation();
-             }, true);
-             context.map().dblclickZoomEnable(false);
-             window.setTimeout(function () {
-               context.map().dblclickZoomEnable(true);
-               select(window).on('click.draw-block', null);
-             }, 500);
-             click(d3_event, p2);
-           }
-         }
+         _this.query = function (loc, multi) {
+           return _wp(loc, multi);
+         }; // Direct access to the location-conflation resolver

 
 

-         function pointermove(d3_event) {
-           if (_downPointer && _downPointer.id === (d3_event.pointerId || 'mouse') && !_downPointer.isCancelled) {
-             var p2 = _downPointer.pointerLocGetter(d3_event);

 
 

-             var dist = geoVecLength(_downPointer.downLoc, p2);
+         _this.loco = function () {
+           return _loco;
+         }; // Direct access to the which-polygon index

 
 

-             if (dist >= _closeTolerance) {
-               _downPointer.isCancelled = true;
-               dispatch$1.call('downcancel', this);
-             }
-           }

 
 

-           if (d3_event.pointerType && d3_event.pointerType !== 'mouse' || d3_event.buttons || _downPointer) return; // HACK: Mobile Safari likes to send one or more `mouse` type pointermove
-           // events immediately after non-mouse pointerup events; detect and ignore them.
+         _this.wp = function () {
+           return _wp;
+         };

 
 

-           if (_lastPointerUpEvent && _lastPointerUpEvent.pointerType !== 'mouse' && d3_event.timeStamp - _lastPointerUpEvent.timeStamp < 100) return;
-           _lastMouse = d3_event;
-           dispatch$1.call('move', this, d3_event, datum(d3_event));
-         }
+         return _this;
+       }

 
 

-         function pointercancel(d3_event) {
-           if (_downPointer && _downPointer.id === (d3_event.pointerId || 'mouse')) {
-             if (!_downPointer.isCancelled) {
-               dispatch$1.call('downcancel', this);
-             }
+       var $$a = _export;
+       var $findIndex = arrayIteration.findIndex;
+       var addToUnscopables = addToUnscopables$5;

 
 

-             _downPointer = null;
-           }
-         }
+       var FIND_INDEX = 'findIndex';
+       var SKIPS_HOLES = true;

 
 

-         function mouseenter() {
-           _mouseLeave = false;
-         }
+       // Shouldn't skip holes
+       if (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES = false; });

 
 

-         function mouseleave() {
-           _mouseLeave = true;
+       // `Array.prototype.findIndex` method
+       // https://tc39.es/ecma262/#sec-array.prototype.findindex
+       $$a({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
+         findIndex: function findIndex(callbackfn /* , that = undefined */) {
+           return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);

          }
          }

+       });

 
 

-         function allowsVertex(d) {
-           return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
-         } // related code
-         // - `mode/drag_node.js`     `doMove()`
-         // - `behavior/draw.js`      `click()`
-         // - `behavior/draw_way.js`  `move()`
-
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables(FIND_INDEX);

 
 

-         function click(d3_event, loc) {
-           var d = datum(d3_event);
-           var target = d && d.properties && d.properties.entity;
-           var mode = context.mode();
+       var isRegExp = isRegexp;

 
 

-           if (target && target.type === 'node' && allowsVertex(target)) {
-             // Snap to a node
-             dispatch$1.call('clickNode', this, target, d);
-             return;
-           } else if (target && target.type === 'way' && (mode.id !== 'add-point' || mode.preset.matchGeometry('vertex'))) {
-             // Snap to a way
-             var choice = geoChooseEdge(context.graph().childNodes(target), loc, context.projection, context.activeID());
+       var notARegexp = function (it) {
+         if (isRegExp(it)) {
+           throw TypeError("The method doesn't accept regular expressions");
+         } return it;
+       };

 
 

-             if (choice) {
-               var edge = [target.nodes[choice.index - 1], target.nodes[choice.index]];
-               dispatch$1.call('clickWay', this, choice.loc, edge, d);
-               return;
-             }
-           } else if (mode.id !== 'add-point' || mode.preset.matchGeometry('point')) {
-             var locLatLng = context.projection.invert(loc);
-             dispatch$1.call('click', this, locLatLng, d);
-           }
-         } // treat a spacebar press like a click
+       var wellKnownSymbol = wellKnownSymbol$s;

 
 

+       var MATCH = wellKnownSymbol('match');

 
 

-         function space(d3_event) {
-           d3_event.preventDefault();
-           d3_event.stopPropagation();
-           var currSpace = context.map().mouse();
+       var correctIsRegexpLogic = function (METHOD_NAME) {
+         var regexp = /./;
+         try {
+           '/./'[METHOD_NAME](regexp);
+         } catch (error1) {
+           try {
+             regexp[MATCH] = false;
+             return '/./'[METHOD_NAME](regexp);
+           } catch (error2) { /* empty */ }
+         } return false;
+       };

 
 

-           if (_disableSpace && _lastSpace) {
-             var dist = geoVecLength(_lastSpace, currSpace);
+       var $$9 = _export;
+       var notARegExp$2 = notARegexp;
+       var requireObjectCoercible$3 = requireObjectCoercible$e;
+       var correctIsRegExpLogic$2 = correctIsRegexpLogic;

 
 

-             if (dist > _tolerance) {
-               _disableSpace = false;
-             }
-           }
+       // `String.prototype.includes` method
+       // https://tc39.es/ecma262/#sec-string.prototype.includes
+       $$9({ target: 'String', proto: true, forced: !correctIsRegExpLogic$2('includes') }, {
+         includes: function includes(searchString /* , position = 0 */) {
+           return !!~String(requireObjectCoercible$3(this))
+             .indexOf(notARegExp$2(searchString), arguments.length > 1 ? arguments[1] : undefined);
+         }
+       });

 
 

-           if (_disableSpace || _mouseLeave || !_lastMouse) return; // user must move mouse or release space bar to allow another click
+       var _mainLocalizer = coreLocalizer(); // singleton

 
 

-           _lastSpace = currSpace;
-           _disableSpace = true;
-           select(window).on('keyup.space-block', function () {
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
-             _disableSpace = false;
-             select(window).on('keyup.space-block', null);
-           }); // get the current mouse position

 
 

-           var loc = context.map().mouse() || // or the map center if the mouse has never entered the map
-           context.projection(context.map().center());
-           click(d3_event, loc);
-         }
+       var _t = _mainLocalizer.t;
+       // coreLocalizer manages language and locale parameters including translated strings
+       //

 
 

-         function backspace(d3_event) {
-           d3_event.preventDefault();
-           dispatch$1.call('undo');
-         }
+       function coreLocalizer() {
+         var localizer = {};
+         var _dataLanguages = {}; // `_dataLocales` is an object containing all _supported_ locale codes -> language info.
+         // * `rtl` - right-to-left or left-to-right text direction
+         // * `pct` - the percent of strings translated; 1 = 100%, full coverage
+         //
+         // {
+         // en: { rtl: false, pct: {…} },
+         // de: { rtl: false, pct: {…} },
+         // …
+         // }

 
 

-         function del(d3_event) {
-           d3_event.preventDefault();
-           dispatch$1.call('cancel');
-         }
+         var _dataLocales = {}; // `localeStrings` is an object containing all _loaded_ locale codes -> string data.
+         // {
+         // en: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
+         // de: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
+         // …
+         // }

 
 

-         function ret(d3_event) {
-           d3_event.preventDefault();
-           dispatch$1.call('finish');
-         }
+         var _localeStrings = {}; // the current locale

 
 

-         function behavior(selection) {
-           context.install(_hover);
-           context.install(_edit);
-           _downPointer = null;
-           keybinding.on('⌫', backspace).on('⌦', del).on('⎋', ret).on('↩', ret).on('space', space).on('⌥space', space);
-           selection.on('mouseenter.draw', mouseenter).on('mouseleave.draw', mouseleave).on(_pointerPrefix + 'down.draw', pointerdown).on(_pointerPrefix + 'move.draw', pointermove);
-           select(window).on(_pointerPrefix + 'up.draw', pointerup, true).on('pointercancel.draw', pointercancel, true);
-           select(document).call(keybinding);
-           return behavior;
-         }
+         var _localeCode = 'en-US'; // `_localeCodes` must contain `_localeCode` first, optionally followed by fallbacks

 
 

-         behavior.off = function (selection) {
-           context.ui().sidebar.hover.cancel();
-           context.uninstall(_hover);
-           context.uninstall(_edit);
-           selection.on('mouseenter.draw', null).on('mouseleave.draw', null).on(_pointerPrefix + 'down.draw', null).on(_pointerPrefix + 'move.draw', null);
-           select(window).on(_pointerPrefix + 'up.draw', null).on('pointercancel.draw', null); // note: keyup.space-block, click.draw-block should remain
+         var _localeCodes = ['en-US', 'en'];
+         var _languageCode = 'en';
+         var _textDirection = 'ltr';
+         var _usesMetric = false;
+         var _languageNames = {};
+         var _scriptNames = {}; // getters for the current locale parameters

 
 

-           select(document).call(keybinding.unbind);
+         localizer.localeCode = function () {
+           return _localeCode;

          };
 
          };
 

-         behavior.hover = function () {
-           return _hover;
+         localizer.localeCodes = function () {
+           return _localeCodes;

          };
 
          };
 

-         return utilRebind(behavior, dispatch$1, 'on');
-       }
-
-       function initRange(domain, range) {
-         switch (arguments.length) {
-           case 0:
-             break;
-
-           case 1:
-             this.range(domain);
-             break;
+         localizer.languageCode = function () {
+           return _languageCode;
+         };

 
 

-           default:
-             this.range(range).domain(domain);
-             break;
-         }
+         localizer.textDirection = function () {
+           return _textDirection;
+         };

 
 

-         return this;
-       }
+         localizer.usesMetric = function () {
+           return _usesMetric;
+         };

 
 

-       function constants(x) {
-         return function () {
-           return x;
+         localizer.languageNames = function () {
+           return _languageNames;

          };
          };

-       }

 
 

-       function number$1(x) {
-         return +x;
-       }
+         localizer.scriptNames = function () {
+           return _scriptNames;
+         }; // The client app may want to manually set the locale, regardless of the
+         // settings provided by the browser

 
 

-       var unit = [0, 1];
-       function identity$3(x) {
-         return x;
-       }

 
 

-       function normalize$1(a, b) {
-         return (b -= a = +a) ? function (x) {
-           return (x - a) / b;
-         } : constants(isNaN(b) ? NaN : 0.5);
-       }
+         var _preferredLocaleCodes = [];

 
 

-       function clamper(a, b) {
-         var t;
-         if (a > b) t = a, a = b, b = t;
-         return function (x) {
-           return Math.max(a, Math.min(b, x));
-         };
-       } // normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
-       // interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].
+         localizer.preferredLocaleCodes = function (codes) {
+           if (!arguments.length) return _preferredLocaleCodes;

 
 

+           if (typeof codes === 'string') {
+             // be generous and accept delimited strings as input
+             _preferredLocaleCodes = codes.split(/,|;| /gi).filter(Boolean);
+           } else {
+             _preferredLocaleCodes = codes;
+           }

 
 

-       function bimap(domain, range, interpolate) {
-         var d0 = domain[0],
-             d1 = domain[1],
-             r0 = range[0],
-             r1 = range[1];
-         if (d1 < d0) d0 = normalize$1(d1, d0), r0 = interpolate(r1, r0);else d0 = normalize$1(d0, d1), r0 = interpolate(r0, r1);
-         return function (x) {
-           return r0(d0(x));
+           return localizer;

          };
          };

-       }

 
 

-       function polymap(domain, range, interpolate) {
-         var j = Math.min(domain.length, range.length) - 1,
-             d = new Array(j),
-             r = new Array(j),
-             i = -1; // Reverse descending domains.
+         var _loadPromise;

 
 

-         if (domain[j] < domain[0]) {
-           domain = domain.slice().reverse();
-           range = range.slice().reverse();
-         }
+         localizer.ensureLoaded = function () {
+           if (_loadPromise) return _loadPromise;
+           var filesToFetch = ['languages', // load the list of languages
+           'locales' // load the list of supported locales
+           ];
+           var localeDirs = {
+             general: 'locales',
+             tagging: 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/translations'
+           };
+           var fileMap = _mainFileFetcher.fileMap();

 
 

-         while (++i < j) {
-           d[i] = normalize$1(domain[i], domain[i + 1]);
-           r[i] = interpolate(range[i], range[i + 1]);
-         }
+           for (var scopeId in localeDirs) {
+             var key = "locales_index_".concat(scopeId);

 
 

-         return function (x) {
-           var i = bisectRight(domain, x, 1, j) - 1;
-           return r[i](d[i](x));
-         };
-       }
+             if (!fileMap[key]) {
+               fileMap[key] = localeDirs[scopeId] + '/index.min.json';
+             }

 
 

-       function copy(source, target) {
-         return target.domain(source.domain()).range(source.range()).interpolate(source.interpolate()).clamp(source.clamp()).unknown(source.unknown());
-       }
-       function transformer$1() {
-         var domain = unit,
-             range = unit,
-             interpolate$1 = interpolate,
-             transform,
-             untransform,
-             unknown,
-             clamp = identity$3,
-             piecewise,
-             output,
-             input;
+             filesToFetch.push(key);
+           }

 
 

-         function rescale() {
-           var n = Math.min(domain.length, range.length);
-           if (clamp !== identity$3) clamp = clamper(domain[0], domain[n - 1]);
-           piecewise = n > 2 ? polymap : bimap;
-           output = input = null;
-           return scale;
-         }
+           return _loadPromise = Promise.all(filesToFetch.map(function (key) {
+             return _mainFileFetcher.get(key);
+           })).then(function (results) {
+             _dataLanguages = results[0];
+             _dataLocales = results[1];
+             var indexes = results.slice(2);

 
 

-         function scale(x) {
-           return isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate$1)))(transform(clamp(x)));
-         }
+             var requestedLocales = (_preferredLocaleCodes || []).concat(utilDetect().browserLocales) // List of locales preferred by the browser in priority order.
+             .concat(['en']); // fallback to English since it's the only guaranteed complete language

 
 

-         scale.invert = function (y) {
-           return clamp(untransform((input || (input = piecewise(range, domain.map(transform), d3_interpolateNumber)))(y)));
-         };

 
 

-         scale.domain = function (_) {
-           return arguments.length ? (domain = Array.from(_, number$1), rescale()) : domain.slice();
-         };
+             _localeCodes = localesToUseFrom(requestedLocales);
+             _localeCode = _localeCodes[0]; // Run iD in the highest-priority locale; the rest are fallbacks

 
 

-         scale.range = function (_) {
-           return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
-         };
+             var loadStringsPromises = [];
+             indexes.forEach(function (index, i) {
+               // Will always return the index for `en` if nothing else
+               var fullCoverageIndex = _localeCodes.findIndex(function (locale) {
+                 return index[locale] && index[locale].pct === 1;
+               }); // We only need to load locales up until we find one with full coverage

 
 

-         scale.rangeRound = function (_) {
-           return range = Array.from(_), interpolate$1 = interpolateRound, rescale();
-         };

 
 

-         scale.clamp = function (_) {
-           return arguments.length ? (clamp = _ ? true : identity$3, rescale()) : clamp !== identity$3;
-         };
+               _localeCodes.slice(0, fullCoverageIndex + 1).forEach(function (code) {
+                 var scopeId = Object.keys(localeDirs)[i];
+                 var directory = Object.values(localeDirs)[i];
+                 if (index[code]) loadStringsPromises.push(localizer.loadLocale(code, scopeId, directory));
+               });
+             });
+             return Promise.all(loadStringsPromises);
+           }).then(function () {
+             updateForCurrentLocale();
+           })["catch"](function (err) {
+             return console.error(err);
+           }); // eslint-disable-line
+         }; // Returns the locales from `requestedLocales` supported by iD that we should use

 
 

-         scale.interpolate = function (_) {
-           return arguments.length ? (interpolate$1 = _, rescale()) : interpolate$1;
-         };

 
 

-         scale.unknown = function (_) {
-           return arguments.length ? (unknown = _, scale) : unknown;
-         };
+         function localesToUseFrom(requestedLocales) {
+           var supportedLocales = _dataLocales;
+           var toUse = [];

 
 

-         return function (t, u) {
-           transform = t, untransform = u;
-           return rescale();
-         };
-       }
-       function continuous() {
-         return transformer$1()(identity$3, identity$3);
-       }
+           for (var i in requestedLocales) {
+             var locale = requestedLocales[i];
+             if (supportedLocales[locale]) toUse.push(locale);

 
 

-       function formatDecimal (x) {
-         return Math.abs(x = Math.round(x)) >= 1e21 ? x.toLocaleString("en").replace(/,/g, "") : x.toString(10);
-       } // Computes the decimal coefficient and exponent of the specified number x with
-       // significant digits p, where x is positive and p is in [1, 21] or undefined.
-       // For example, formatDecimalParts(1.23) returns ["123", 0].
+             if (locale.includes('-')) {
+               // Full locale ('es-ES'), add fallback to the base ('es')
+               var langPart = locale.split('-')[0];
+               if (supportedLocales[langPart]) toUse.push(langPart);
+             }
+           } // remove duplicates

 
 

-       function formatDecimalParts(x, p) {
-         if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity

 
 

-         var i,
-             coefficient = x.slice(0, i); // The string returned by toExponential either has the form \d\.\d+e[-+]\d+
-         // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
+           return utilArrayUniq(toUse);
+         }

 
 

-         return [coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, +x.slice(i + 1)];
-       }
+         function updateForCurrentLocale() {
+           if (!_localeCode) return;
+           _languageCode = _localeCode.split('-')[0];
+           var currentData = _dataLocales[_localeCode] || _dataLocales[_languageCode];
+           var hash = utilStringQs(window.location.hash);

 
 

-       function exponent (x) {
-         return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN;
-       }
+           if (hash.rtl === 'true') {
+             _textDirection = 'rtl';
+           } else if (hash.rtl === 'false') {
+             _textDirection = 'ltr';
+           } else {
+             _textDirection = currentData && currentData.rtl ? 'rtl' : 'ltr';
+           }

 
 

-       function formatGroup (grouping, thousands) {
-         return function (value, width) {
-           var i = value.length,
-               t = [],
-               j = 0,
-               g = grouping[0],
-               length = 0;
+           var locale = _localeCode;
+           if (locale.toLowerCase() === 'en-us') locale = 'en';
+           _languageNames = _localeStrings.general[locale].languageNames;
+           _scriptNames = _localeStrings.general[locale].scriptNames;
+           _usesMetric = _localeCode.slice(-3).toLowerCase() !== '-us';
+         }
+         /* Locales */
+         // Returns a Promise to load the strings for the requested locale

 
 

-           while (i > 0 && g > 0) {
-             if (length + g + 1 > width) g = Math.max(1, width - length);
-             t.push(value.substring(i -= g, i + g));
-             if ((length += g + 1) > width) break;
-             g = grouping[j = (j + 1) % grouping.length];
+
+         localizer.loadLocale = function (locale, scopeId, directory) {
+           // US English is the default
+           if (locale.toLowerCase() === 'en-us') locale = 'en';
+
+           if (_localeStrings[scopeId] && _localeStrings[scopeId][locale]) {
+             // already loaded
+             return Promise.resolve(locale);

            }
 
            }
 

-           return t.reverse().join(thousands);
-         };
-       }
+           var fileMap = _mainFileFetcher.fileMap();
+           var key = "locale_".concat(scopeId, "_").concat(locale);

 
 

-       function formatNumerals (numerals) {
-         return function (value) {
-           return value.replace(/[0-9]/g, function (i) {
-             return numerals[+i];
+           if (!fileMap[key]) {
+             fileMap[key] = "".concat(directory, "/").concat(locale, ".min.json");
+           }
+
+           return _mainFileFetcher.get(key).then(function (d) {
+             if (!_localeStrings[scopeId]) _localeStrings[scopeId] = {};
+             _localeStrings[scopeId][locale] = d[locale];
+             return locale;

            });
          };
            });
          };

-       }

 
 

-       // [[fill]align][sign][symbol][0][width][,][.precision][~][type]
-       var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;
-       function formatSpecifier(specifier) {
-         if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
-         var match;
-         return new FormatSpecifier({
-           fill: match[1],
-           align: match[2],
-           sign: match[3],
-           symbol: match[4],
-           zero: match[5],
-           width: match[6],
-           comma: match[7],
-           precision: match[8] && match[8].slice(1),
-           trim: match[9],
-           type: match[10]
-         });
-       }
-       formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof
+         localizer.pluralRule = function (number) {
+           return pluralRule(number, _localeCode);
+         }; // Returns the plural rule for the given `number` with the given `localeCode`.
+         // One of: `zero`, `one`, `two`, `few`, `many`, `other`

 
 

-       function FormatSpecifier(specifier) {
-         this.fill = specifier.fill === undefined ? " " : specifier.fill + "";
-         this.align = specifier.align === undefined ? ">" : specifier.align + "";
-         this.sign = specifier.sign === undefined ? "-" : specifier.sign + "";
-         this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + "";
-         this.zero = !!specifier.zero;
-         this.width = specifier.width === undefined ? undefined : +specifier.width;
-         this.comma = !!specifier.comma;
-         this.precision = specifier.precision === undefined ? undefined : +specifier.precision;
-         this.trim = !!specifier.trim;
-         this.type = specifier.type === undefined ? "" : specifier.type + "";
-       }

 
 

-       FormatSpecifier.prototype.toString = function () {
-         return this.fill + this.align + this.sign + this.symbol + (this.zero ? "0" : "") + (this.width === undefined ? "" : Math.max(1, this.width | 0)) + (this.comma ? "," : "") + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) + (this.trim ? "~" : "") + this.type;
-       };
+         function pluralRule(number, localeCode) {
+           // modern browsers have this functionality built-in
+           var rules = 'Intl' in window && Intl.PluralRules && new Intl.PluralRules(localeCode);

 
 

-       // Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.
-       function formatTrim (s) {
-         out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {
-           switch (s[i]) {
-             case ".":
-               i0 = i1 = i;
-               break;
+           if (rules) {
+             return rules.select(number);
+           } // fallback to basic one/other, as in English

 
 

-             case "0":
-               if (i0 === 0) i0 = i;
-               i1 = i;
-               break;

 
 

-             default:
-               if (!+s[i]) break out;
-               if (i0 > 0) i0 = 0;
-               break;
-           }
+           if (number === 1) return 'one';
+           return 'other';

          }
          }

+         /**
+         * Try to find that string in `locale` or the current `_localeCode` matching
+         * the given `stringId`. If no string can be found in the requested locale,
+         * we'll recurse down all the `_localeCodes` until one is found.
+         *
+         * @param  {string}   stringId      string identifier
+         * @param  {object?}  replacements  token replacements and default string
+         * @param  {string?}  locale        locale to use (defaults to currentLocale)
+         * @return {string?}  localized string
+         */

 
 

-         return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
-       }

 
 

-       // `thisNumberValue` abstract operation
-       // https://tc39.github.io/ecma262/#sec-thisnumbervalue
-       var thisNumberValue = function (value) {
-         if (typeof value != 'number' && classofRaw(value) != 'Number') {
-           throw TypeError('Incorrect invocation');
-         }
-         return +value;
-       };
+         localizer.tInfo = function (origStringId, replacements, locale) {
+           var stringId = origStringId.trim();
+           var scopeId = 'general';

 
 

-       // `String.prototype.repeat` method implementation
-       // https://tc39.github.io/ecma262/#sec-string.prototype.repeat
-       var stringRepeat = ''.repeat || function repeat(count) {
-         var str = String(requireObjectCoercible(this));
-         var result = '';
-         var n = toInteger(count);
-         if (n < 0 || n == Infinity) throw RangeError('Wrong number of repetitions');
-         for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) result += str;
-         return result;
-       };
+           if (stringId[0] === '_') {
+             var split = stringId.split('.');
+             scopeId = split[0].slice(1);
+             stringId = split.slice(1).join('.');
+           }

 
 

-       var nativeToFixed = 1.0.toFixed;
-       var floor$6 = Math.floor;
+           locale = locale || _localeCode;
+           var path = stringId.split('.').map(function (s) {
+             return s.replace(/<TX_DOT>/g, '.');
+           }).reverse();
+           var stringsKey = locale; // US English is the default

 
 

-       var pow$2 = function (x, n, acc) {
-         return n === 0 ? acc : n % 2 === 1 ? pow$2(x, n - 1, acc * x) : pow$2(x * x, n / 2, acc);
-       };
+           if (stringsKey.toLowerCase() === 'en-us') stringsKey = 'en';
+           var result = _localeStrings && _localeStrings[scopeId] && _localeStrings[scopeId][stringsKey];

 
 

-       var log$2 = function (x) {
-         var n = 0;
-         var x2 = x;
-         while (x2 >= 4096) {
-           n += 12;
-           x2 /= 4096;
-         }
-         while (x2 >= 2) {
-           n += 1;
-           x2 /= 2;
-         } return n;
-       };
+           while (result !== undefined && path.length) {
+             result = result[path.pop()];
+           }

 
 

-       var FORCED$c = nativeToFixed && (
-         0.00008.toFixed(3) !== '0.000' ||
-         0.9.toFixed(0) !== '1' ||
-         1.255.toFixed(2) !== '1.25' ||
-         1000000000000000128.0.toFixed(0) !== '1000000000000000128'
-       ) || !fails(function () {
-         // V8 ~ Android 4.3-
-         nativeToFixed.call({});
-       });
+           if (result !== undefined) {
+             if (replacements) {
+               if (_typeof(result) === 'object' && Object.keys(result).length) {
+                 // If plural forms are provided, dig one level deeper based on the
+                 // first numeric token replacement provided.
+                 var number = Object.values(replacements).find(function (value) {
+                   return typeof value === 'number';
+                 });

 
 

-       // `Number.prototype.toFixed` method
-       // https://tc39.github.io/ecma262/#sec-number.prototype.tofixed
-       _export({ target: 'Number', proto: true, forced: FORCED$c }, {
-         // eslint-disable-next-line max-statements
-         toFixed: function toFixed(fractionDigits) {
-           var number = thisNumberValue(this);
-           var fractDigits = toInteger(fractionDigits);
-           var data = [0, 0, 0, 0, 0, 0];
-           var sign = '';
-           var result = '0';
-           var e, z, j, k;
+                 if (number !== undefined) {
+                   var rule = pluralRule(number, locale);

 
 

-           var multiply = function (n, c) {
-             var index = -1;
-             var c2 = c;
-             while (++index < 6) {
-               c2 += n * data[index];
-               data[index] = c2 % 1e7;
-               c2 = floor$6(c2 / 1e7);
+                   if (result[rule]) {
+                     result = result[rule];
+                   } else {
+                     // We're pretty sure this should be a plural but no string
+                     // could be found for the given rule. Just pick the first
+                     // string and hope it makes sense.
+                     result = Object.values(result)[0];
+                   }
+                 }
+               }
+
+               if (typeof result === 'string') {
+                 for (var key in replacements) {
+                   var value = replacements[key];
+
+                   if (typeof value === 'number') {
+                     if (value.toLocaleString) {
+                       // format numbers for the locale
+                       value = value.toLocaleString(locale, {
+                         style: 'decimal',
+                         useGrouping: true,
+                         minimumFractionDigits: 0
+                       });
+                     } else {
+                       value = value.toString();
+                     }
+                   }
+
+                   var token = "{".concat(key, "}");
+                   var regex = new RegExp(token, 'g');
+                   result = result.replace(regex, value);
+                 }
+               }

              }
              }

-           };

 
 

-           var divide = function (n) {
-             var index = 6;
-             var c = 0;
-             while (--index >= 0) {
-               c += data[index];
-               data[index] = floor$6(c / n);
-               c = (c % n) * 1e7;
+             if (typeof result === 'string') {
+               // found a localized string!
+               return {
+                 text: result,
+                 locale: locale
+               };

              }
              }

-           };
+           } // no localized string found...
+           // attempt to fallback to a lower-priority language

 
 

-           var dataToString = function () {
-             var index = 6;
-             var s = '';
-             while (--index >= 0) {
-               if (s !== '' || index === 0 || data[index] !== 0) {
-                 var t = String(data[index]);
-                 s = s === '' ? t : s + stringRepeat.call('0', 7 - t.length) + t;
-               }
-             } return s;
-           };

 
 

-           if (fractDigits < 0 || fractDigits > 20) throw RangeError('Incorrect fraction digits');
-           // eslint-disable-next-line no-self-compare
-           if (number != number) return 'NaN';
-           if (number <= -1e21 || number >= 1e21) return String(number);
-           if (number < 0) {
-             sign = '-';
-             number = -number;
+           var index = _localeCodes.indexOf(locale);
+
+           if (index >= 0 && index < _localeCodes.length - 1) {
+             // eventually this will be 'en' or another locale with 100% coverage
+             var fallback = _localeCodes[index + 1];
+             return localizer.tInfo(origStringId, replacements, fallback);

            }
            }

-           if (number > 1e-21) {
-             e = log$2(number * pow$2(2, 69, 1)) - 69;
-             z = e < 0 ? number * pow$2(2, -e, 1) : number / pow$2(2, e, 1);
-             z *= 0x10000000000000;
-             e = 52 - e;
-             if (e > 0) {
-               multiply(0, z);
-               j = fractDigits;
-               while (j >= 7) {
-                 multiply(1e7, 0);
-                 j -= 7;
-               }
-               multiply(pow$2(10, j, 1), 0);
-               j = e - 1;
-               while (j >= 23) {
-                 divide(1 << 23);
-                 j -= 23;
-               }
-               divide(1 << j);
-               multiply(1, 1);
-               divide(2);
-               result = dataToString();
-             } else {
-               multiply(0, z);
-               multiply(1 << -e, 0);
-               result = dataToString() + stringRepeat.call('0', fractDigits);
-             }
+
+           if (replacements && 'default' in replacements) {
+             // Fallback to a default value if one is specified in `replacements`
+             return {
+               text: replacements["default"],
+               locale: null
+             };

            }
            }

-           if (fractDigits > 0) {
-             k = result.length;
-             result = sign + (k <= fractDigits
-               ? '0.' + stringRepeat.call('0', fractDigits - k) + result
-               : result.slice(0, k - fractDigits) + '.' + result.slice(k - fractDigits));
-           } else {
-             result = sign + result;
-           } return result;
-         }
-       });

 
 

-       var nativeToPrecision = 1.0.toPrecision;
+           var missing = "Missing ".concat(locale, " translation: ").concat(origStringId);
+           if (typeof console !== 'undefined') console.error(missing); // eslint-disable-line

 
 

-       var FORCED$d = fails(function () {
-         // IE7-
-         return nativeToPrecision.call(1, undefined) !== '1';
-       }) || !fails(function () {
-         // V8 ~ Android 4.3-
-         nativeToPrecision.call({});
-       });
+           return {
+             text: missing,
+             locale: 'en'
+           };
+         };

 
 

-       // `Number.prototype.toPrecision` method
-       // https://tc39.github.io/ecma262/#sec-number.prototype.toprecision
-       _export({ target: 'Number', proto: true, forced: FORCED$d }, {
-         toPrecision: function toPrecision(precision) {
-           return precision === undefined
-             ? nativeToPrecision.call(thisNumberValue(this))
-             : nativeToPrecision.call(thisNumberValue(this), precision);
-         }
-       });
+         localizer.hasTextForStringId = function (stringId) {
+           return !!localizer.tInfo(stringId, {
+             "default": 'nothing found'
+           }).locale;
+         }; // Returns only the localized text, discarding the locale info

 
 

-       var prefixExponent;
-       function formatPrefixAuto (x, p) {
-         var d = formatDecimalParts(x, p);
-         if (!d) return x + "";
-         var coefficient = d[0],
-             exponent = d[1],
-             i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
-             n = coefficient.length;
-         return i === n ? coefficient : i > n ? coefficient + new Array(i - n + 1).join("0") : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y!
-       }

 
 

-       function formatRounded (x, p) {
-         var d = formatDecimalParts(x, p);
-         if (!d) return x + "";
-         var coefficient = d[0],
-             exponent = d[1];
-         return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) : coefficient + new Array(exponent - coefficient.length + 2).join("0");
-       }
+         localizer.t = function (stringId, replacements, locale) {
+           return localizer.tInfo(stringId, replacements, locale).text;
+         }; // Returns the localized text wrapped in an HTML element encoding the locale info

 
 

-       var formatTypes = {
-         "%": function _(x, p) {
-           return (x * 100).toFixed(p);
-         },
-         "b": function b(x) {
-           return Math.round(x).toString(2);
-         },
-         "c": function c(x) {
-           return x + "";
-         },
-         "d": formatDecimal,
-         "e": function e(x, p) {
-           return x.toExponential(p);
-         },
-         "f": function f(x, p) {
-           return x.toFixed(p);
-         },
-         "g": function g(x, p) {
-           return x.toPrecision(p);
-         },
-         "o": function o(x) {
-           return Math.round(x).toString(8);
-         },
-         "p": function p(x, _p) {
-           return formatRounded(x * 100, _p);
-         },
-         "r": formatRounded,
-         "s": formatPrefixAuto,
-         "X": function X(x) {
-           return Math.round(x).toString(16).toUpperCase();
-         },
-         "x": function x(_x) {
-           return Math.round(_x).toString(16);
-         }
-       };

 
 

-       function identity$4 (x) {
-         return x;
+         localizer.t.html = function (stringId, replacements, locale) {
+           var info = localizer.tInfo(stringId, replacements, locale); // text may be empty or undefined if `replacements.default` is
+
+           return info.text ? localizer.htmlForLocalizedText(info.text, info.locale) : '';
+         };
+
+         localizer.htmlForLocalizedText = function (text, localeCode) {
+           return "<span class=\"localized-text\" lang=\"".concat(localeCode || 'unknown', "\">").concat(text, "</span>");
+         };
+
+         localizer.languageName = function (code, options) {
+           if (_languageNames[code]) {
+             // name in locale language
+             // e.g. "German"
+             return _languageNames[code];
+           } // sometimes we only want the local name
+
+
+           if (options && options.localOnly) return null;
+           var langInfo = _dataLanguages[code];
+
+           if (langInfo) {
+             if (langInfo.nativeName) {
+               // name in native language
+               // e.g. "Deutsch (de)"
+               return localizer.t('translate.language_and_code', {
+                 language: langInfo.nativeName,
+                 code: code
+               });
+             } else if (langInfo.base && langInfo.script) {
+               var base = langInfo.base; // the code of the language this is based on
+
+               if (_languageNames[base]) {
+                 // base language name in locale language
+                 var scriptCode = langInfo.script;
+                 var script = _scriptNames[scriptCode] || scriptCode; // e.g. "Serbian (Cyrillic)"
+
+                 return localizer.t('translate.language_and_code', {
+                   language: _languageNames[base],
+                   code: script
+                 });
+               } else if (_dataLanguages[base] && _dataLanguages[base].nativeName) {
+                 // e.g. "српски (sr-Cyrl)"
+                 return localizer.t('translate.language_and_code', {
+                   language: _dataLanguages[base].nativeName,
+                   code: code
+                 });
+               }
+             }
+           }
+
+           return code; // if not found, use the code
+         };
+
+         return localizer;

        }
 
        }
 

-       var map = Array.prototype.map,
-           prefixes = ["y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y"];
-       function formatLocale (locale) {
-         var group = locale.grouping === undefined || locale.thousands === undefined ? identity$4 : formatGroup(map.call(locale.grouping, Number), locale.thousands + ""),
-             currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
-             currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
-             decimal = locale.decimal === undefined ? "." : locale.decimal + "",
-             numerals = locale.numerals === undefined ? identity$4 : formatNumerals(map.call(locale.numerals, String)),
-             percent = locale.percent === undefined ? "%" : locale.percent + "",
-             minus = locale.minus === undefined ? "−" : locale.minus + "",
-             nan = locale.nan === undefined ? "NaN" : locale.nan + "";
+       // `presetCollection` is a wrapper around an `Array` of presets `collection`,
+       // and decorated with some extra methods for searching and matching geometry
+       //

 
 

-         function newFormat(specifier) {
-           specifier = formatSpecifier(specifier);
-           var fill = specifier.fill,
-               align = specifier.align,
-               sign = specifier.sign,
-               symbol = specifier.symbol,
-               zero = specifier.zero,
-               width = specifier.width,
-               comma = specifier.comma,
-               precision = specifier.precision,
-               trim = specifier.trim,
-               type = specifier.type; // The "n" type is an alias for ",g".
+       function presetCollection(collection) {
+         var MAXRESULTS = 50;
+         var _this = {};
+         var _memo = {};
+         _this.collection = collection;

 
 

-           if (type === "n") comma = true, type = "g"; // The "" type, and any invalid type, is an alias for ".12~g".
-           else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; // If zero fill is specified, padding goes after sign and before digits.
+         _this.item = function (id) {
+           if (_memo[id]) return _memo[id];

 
 

-           if (zero || fill === "0" && align === "=") zero = true, fill = "0", align = "="; // Compute the prefix and suffix.
-           // For SI-prefix, the suffix is lazily computed.
+           var found = _this.collection.find(function (d) {
+             return d.id === id;
+           });

 
 

-           var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
-               suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; // What format function should we use?
-           // Is this an integer type?
-           // Can this type generate exponential notation?
+           if (found) _memo[id] = found;
+           return found;
+         };
+
+         _this.index = function (id) {
+           return _this.collection.findIndex(function (d) {
+             return d.id === id;
+           });
+         };

 
 

-           var formatType = formatTypes[type],
-               maybeSuffix = /[defgprs%]/.test(type); // Set the default precision if not specified,
-           // or clamp the specified precision to the supported range.
-           // For significant precision, it must be in [1, 21].
-           // For fixed precision, it must be in [0, 20].
+         _this.matchGeometry = function (geometry) {
+           return presetCollection(_this.collection.filter(function (d) {
+             return d.matchGeometry(geometry);
+           }));
+         };

 
 

-           precision = precision === undefined ? 6 : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) : Math.max(0, Math.min(20, precision));
+         _this.matchAllGeometry = function (geometries) {
+           return presetCollection(_this.collection.filter(function (d) {
+             return d && d.matchAllGeometry(geometries);
+           }));
+         };

 
 

-           function format(value) {
-             var valuePrefix = prefix,
-                 valueSuffix = suffix,
-                 i,
-                 n,
-                 c;
+         _this.matchAnyGeometry = function (geometries) {
+           return presetCollection(_this.collection.filter(function (d) {
+             return geometries.some(function (geom) {
+               return d.matchGeometry(geom);
+             });
+           }));
+         };

 
 

-             if (type === "c") {
-               valueSuffix = formatType(value) + valueSuffix;
-               value = "";
-             } else {
-               value = +value; // Determine the sign. -0 is not less than 0, but 1 / -0 is!
+         _this.fallback = function (geometry) {
+           var id = geometry;
+           if (id === 'vertex') id = 'point';
+           return _this.item(id);
+         };

 
 

-               var valueNegative = value < 0 || 1 / value < 0; // Perform the initial formatting.
+         _this.search = function (value, geometry, loc) {
+           if (!value) return _this; // don't remove diacritical characters since we're assuming the user is being intentional

 
 

-               value = isNaN(value) ? nan : formatType(Math.abs(value), precision); // Trim insignificant zeros.
+           value = value.toLowerCase().trim(); // match at name beginning or just after a space (e.g. "office" -> match "Law Office")

 
 

-               if (trim) value = formatTrim(value); // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.
+           function leading(a) {
+             var index = a.indexOf(value);
+             return index === 0 || a[index - 1] === ' ';
+           } // match at name beginning only

 
 

-               if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; // Compute the prefix and suffix.

 
 

-               valuePrefix = (valueNegative ? sign === "(" ? sign : minus : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
-               valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); // Break the formatted value into the integer “value” part that can be
-               // grouped, and fractional or exponential “suffix” part that is not.
+           function leadingStrict(a) {
+             var index = a.indexOf(value);
+             return index === 0;
+           }

 
 

-               if (maybeSuffix) {
-                 i = -1, n = value.length;
+           function sortPresets(nameProp) {
+             return function sortNames(a, b) {
+               var aCompare = a[nameProp]();
+               var bCompare = b[nameProp](); // priority if search string matches preset name exactly - #4325

 
 

-                 while (++i < n) {
-                   if (c = value.charCodeAt(i), 48 > c || c > 57) {
-                     valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
-                     value = value.slice(0, i);
-                     break;
-                   }
-                 }
-               }
-             } // If the fill character is not "0", grouping is applied before padding.
+               if (value === aCompare) return -1;
+               if (value === bCompare) return 1; // priority for higher matchScore

 
 

+               var i = b.originalScore - a.originalScore;
+               if (i !== 0) return i; // priority if search string appears earlier in preset name

 
 

-             if (comma && !zero) value = group(value, Infinity); // Compute the padding.
+               i = aCompare.indexOf(value) - bCompare.indexOf(value);
+               if (i !== 0) return i; // priority for shorter preset names

 
 

-             var length = valuePrefix.length + value.length + valueSuffix.length,
-                 padding = length < width ? new Array(width - length + 1).join(fill) : ""; // If the fill character is "0", grouping is applied after padding.
+               return aCompare.length - bCompare.length;
+             };
+           }

 
 

-             if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; // Reconstruct the final output based on the desired alignment.
+           var pool = _this.collection;

 
 

-             switch (align) {
-               case "<":
-                 value = valuePrefix + value + valueSuffix + padding;
-                 break;
+           if (Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);
+             pool = pool.filter(function (a) {
+               return !a.locationSetID || validLocations[a.locationSetID];
+             });
+           }

 
 

-               case "=":
-                 value = valuePrefix + padding + value + valueSuffix;
-                 break;
+           var searchable = pool.filter(function (a) {
+             return a.searchable !== false && a.suggestion !== true;
+           });
+           var suggestions = pool.filter(function (a) {
+             return a.suggestion === true;
+           }); // matches value to preset.name

 
 

-               case "^":
-                 value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length);
-                 break;
+           var leadingNames = searchable.filter(function (a) {
+             return leading(a.searchName());
+           }).sort(sortPresets('searchName')); // matches value to preset suggestion name
+
+           var leadingSuggestions = suggestions.filter(function (a) {
+             return leadingStrict(a.searchName());
+           }).sort(sortPresets('searchName'));
+           var leadingNamesStripped = searchable.filter(function (a) {
+             return leading(a.searchNameStripped());
+           }).sort(sortPresets('searchNameStripped'));
+           var leadingSuggestionsStripped = suggestions.filter(function (a) {
+             return leadingStrict(a.searchNameStripped());
+           }).sort(sortPresets('searchNameStripped')); // matches value to preset.terms values
+
+           var leadingTerms = searchable.filter(function (a) {
+             return (a.terms() || []).some(leading);
+           });
+           var leadingSuggestionTerms = suggestions.filter(function (a) {
+             return (a.terms() || []).some(leading);
+           }); // matches value to preset.tags values

 
 

-               default:
-                 value = padding + valuePrefix + value + valueSuffix;
-                 break;
-             }
+           var leadingTagValues = searchable.filter(function (a) {
+             return Object.values(a.tags || {}).filter(function (val) {
+               return val !== '*';
+             }).some(leading);
+           }); // finds close matches to value in preset.name

 
 

-             return numerals(value);
-           }
+           var similarName = searchable.map(function (a) {
+             return {
+               preset: a,
+               dist: utilEditDistance(value, a.searchName())
+             };
+           }).filter(function (a) {
+             return a.dist + Math.min(value.length - a.preset.searchName().length, 0) < 3;
+           }).sort(function (a, b) {
+             return a.dist - b.dist;
+           }).map(function (a) {
+             return a.preset;
+           }); // finds close matches to value to preset suggestion name

 
 

-           format.toString = function () {
-             return specifier + "";
-           };
+           var similarSuggestions = suggestions.map(function (a) {
+             return {
+               preset: a,
+               dist: utilEditDistance(value, a.searchName())
+             };
+           }).filter(function (a) {
+             return a.dist + Math.min(value.length - a.preset.searchName().length, 0) < 1;
+           }).sort(function (a, b) {
+             return a.dist - b.dist;
+           }).map(function (a) {
+             return a.preset;
+           }); // finds close matches to value in preset.terms

 
 

-           return format;
-         }
+           var similarTerms = searchable.filter(function (a) {
+             return (a.terms() || []).some(function (b) {
+               return utilEditDistance(value, b) + Math.min(value.length - b.length, 0) < 3;
+             });
+           });
+           var results = leadingNames.concat(leadingSuggestions, leadingNamesStripped, leadingSuggestionsStripped, leadingTerms, leadingSuggestionTerms, leadingTagValues, similarName, similarSuggestions, similarTerms).slice(0, MAXRESULTS - 1);

 
 

-         function formatPrefix(specifier, value) {
-           var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
-               e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,
-               k = Math.pow(10, -e),
-               prefix = prefixes[8 + e / 3];
-           return function (value) {
-             return f(k * value) + prefix;
-           };
-         }
+           if (geometry) {
+             if (typeof geometry === 'string') {
+               results.push(_this.fallback(geometry));
+             } else {
+               geometry.forEach(function (geom) {
+                 return results.push(_this.fallback(geom));
+               });
+             }
+           }

 
 

-         return {
-           format: newFormat,
-           formatPrefix: formatPrefix
+           return presetCollection(utilArrayUniq(results));

          };
          };

-       }

 
 

-       var locale;
-       var format;
-       var formatPrefix;
-       defaultLocale({
-         thousands: ",",
-         grouping: [3],
-         currency: ["$", ""]
-       });
-       function defaultLocale(definition) {
-         locale = formatLocale(definition);
-         format = locale.format;
-         formatPrefix = locale.formatPrefix;
-         return locale;
+         return _this;

        }
 
        }
 

-       function precisionFixed (step) {
-         return Math.max(0, -exponent(Math.abs(step)));
-       }
+       // `presetCategory` builds a `presetCollection` of member presets,
+       // decorated with some extra methods for searching and matching geometry
+       //

 
 

-       function precisionPrefix (step, value) {
-         return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));
-       }
+       function presetCategory(categoryID, category, allPresets) {
+         var _this = Object.assign({}, category); // shallow copy

 
 

-       function precisionRound (step, max) {
-         step = Math.abs(step), max = Math.abs(max) - step;
-         return Math.max(0, exponent(max) - exponent(step)) + 1;
-       }

 
 

-       function tickFormat(start, stop, count, specifier) {
-         var step = tickStep(start, stop, count),
-             precision;
-         specifier = formatSpecifier(specifier == null ? ",f" : specifier);
+         var _searchName; // cache

 
 

-         switch (specifier.type) {
-           case "s":
-             {
-               var value = Math.max(Math.abs(start), Math.abs(stop));
-               if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;
-               return formatPrefix(specifier, value);
-             }

 
 

-           case "":
-           case "e":
-           case "g":
-           case "p":
-           case "r":
-             {
-               if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === "e");
-               break;
-             }
+         var _searchNameStripped; // cache

 
 

-           case "f":
-           case "%":
-             {
-               if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === "%") * 2;
-               break;
-             }
-         }

 
 

-         return format(specifier);
-       }
+         _this.id = categoryID;
+         _this.members = presetCollection((category.members || []).map(function (presetID) {
+           return allPresets[presetID];
+         }).filter(Boolean));
+         _this.geometry = _this.members.collection.reduce(function (acc, preset) {
+           for (var i in preset.geometry) {
+             var geometry = preset.geometry[i];

 
 

-       function linearish(scale) {
-         var domain = scale.domain;
+             if (acc.indexOf(geometry) === -1) {
+               acc.push(geometry);
+             }
+           }

 
 

-         scale.ticks = function (count) {
-           var d = domain();
-           return ticks(d[0], d[d.length - 1], count == null ? 10 : count);
+           return acc;
+         }, []);
+
+         _this.matchGeometry = function (geom) {
+           return _this.geometry.indexOf(geom) >= 0;

          };
 
          };
 

-         scale.tickFormat = function (count, specifier) {
-           var d = domain();
-           return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);
+         _this.matchAllGeometry = function (geometries) {
+           return _this.members.collection.some(function (preset) {
+             return preset.matchAllGeometry(geometries);
+           });

          };
 
          };
 

-         scale.nice = function (count) {
-           if (count == null) count = 10;
-           var d = domain();
-           var i0 = 0;
-           var i1 = d.length - 1;
-           var start = d[i0];
-           var stop = d[i1];
-           var prestep;
-           var step;
-           var maxIter = 10;
+         _this.matchScore = function () {
+           return -1;
+         };

 
 

-           if (stop < start) {
-             step = start, start = stop, stop = step;
-             step = i0, i0 = i1, i1 = step;
-           }
+         _this.name = function () {
+           return _t("_tagging.presets.categories.".concat(categoryID, ".name"), {
+             'default': categoryID
+           });
+         };

 
 

-           while (maxIter-- > 0) {
-             step = tickIncrement(start, stop, count);
+         _this.nameLabel = function () {
+           return _t.html("_tagging.presets.categories.".concat(categoryID, ".name"), {
+             'default': categoryID
+           });
+         };

 
 

-             if (step === prestep) {
-               d[i0] = start;
-               d[i1] = stop;
-               return domain(d);
-             } else if (step > 0) {
-               start = Math.floor(start / step) * step;
-               stop = Math.ceil(stop / step) * step;
-             } else if (step < 0) {
-               start = Math.ceil(start * step) / step;
-               stop = Math.floor(stop * step) / step;
-             } else {
-               break;
-             }
+         _this.terms = function () {
+           return [];
+         };

 
 

-             prestep = step;
+         _this.searchName = function () {
+           if (!_searchName) {
+             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();

            }
 
            }
 

-           return scale;
+           return _searchName;

          };
 
          };
 

-         return scale;
-       }
-       function linear$2() {
-         var scale = continuous();
+         _this.searchNameStripped = function () {
+           if (!_searchNameStripped) {
+             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts

 
 

-         scale.copy = function () {
-           return copy(scale, linear$2());
+             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics
+
+             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');
+           }
+
+           return _searchNameStripped;

          };
 
          };
 

-         initRange.apply(scale, arguments);
-         return linearish(scale);
+         return _this;

        }
 
        }
 

-       var nativeExpm1 = Math.expm1;
-       var exp$1 = Math.exp;
-
-       // `Math.expm1` method implementation
-       // https://tc39.github.io/ecma262/#sec-math.expm1
-       var mathExpm1 = (!nativeExpm1
-         // Old FF bug
-         || nativeExpm1(10) > 22025.465794806719 || nativeExpm1(10) < 22025.4657948067165168
-         // Tor Browser bug
-         || nativeExpm1(-2e-17) != -2e-17
-       ) ? function expm1(x) {
-         return (x = +x) == 0 ? x : x > -1e-6 && x < 1e-6 ? x + x * x / 2 : exp$1(x) - 1;
-       } : nativeExpm1;
+       // `presetField` decorates a given `field` Object
+       // with some extra methods for searching and matching geometry
+       //

 
 

-       function quantize() {
-         var x0 = 0,
-             x1 = 1,
-             n = 1,
-             domain = [0.5],
-             range = [0, 1],
-             unknown;
+       function presetField(fieldID, field) {
+         var _this = Object.assign({}, field); // shallow copy

 
 

-         function scale(x) {
-           return x <= x ? range[bisectRight(domain, x, 0, n)] : unknown;
-         }

 
 

-         function rescale() {
-           var i = -1;
-           domain = new Array(n);
+         _this.id = fieldID; // for use in classes, element ids, css selectors

 
 

-           while (++i < n) {
-             domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1);
-           }
+         _this.safeid = utilSafeClassName(fieldID);

 
 

-           return scale;
-         }
+         _this.matchGeometry = function (geom) {
+           return !_this.geometry || _this.geometry.indexOf(geom) !== -1;
+         };

 
 

-         scale.domain = function (_) {
-           var _ref, _ref2;
+         _this.matchAllGeometry = function (geometries) {
+           return !_this.geometry || geometries.every(function (geom) {
+             return _this.geometry.indexOf(geom) !== -1;
+           });
+         };

 
 

-           return arguments.length ? ((_ref = _, _ref2 = _slicedToArray(_ref, 2), x0 = _ref2[0], x1 = _ref2[1], _ref), x0 = +x0, x1 = +x1, rescale()) : [x0, x1];
+         _this.t = function (scope, options) {
+           return _t("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);

          };
 
          };
 

-         scale.range = function (_) {
-           return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice();
+         _this.t.html = function (scope, options) {
+           return _t.html("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);

          };
 
          };
 

-         scale.invertExtent = function (y) {
-           var i = range.indexOf(y);
-           return i < 0 ? [NaN, NaN] : i < 1 ? [x0, domain[0]] : i >= n ? [domain[n - 1], x1] : [domain[i - 1], domain[i]];
+         _this.hasTextForStringId = function (scope) {
+           return _mainLocalizer.hasTextForStringId("_tagging.presets.fields.".concat(fieldID, ".").concat(scope));

          };
 
          };
 

-         scale.unknown = function (_) {
-           return arguments.length ? (unknown = _, scale) : scale;
+         _this.title = function () {
+           return _this.overrideLabel || _this.t('label', {
+             'default': fieldID
+           });

          };
 
          };
 

-         scale.thresholds = function () {
-           return domain.slice();
+         _this.label = function () {
+           return _this.overrideLabel || _this.t.html('label', {
+             'default': fieldID
+           });

          };
 
          };
 

-         scale.copy = function () {
-           return quantize().domain([x0, x1]).range(range).unknown(unknown);
+         var _placeholder = _this.placeholder;
+
+         _this.placeholder = function () {
+           return _this.t('placeholder', {
+             'default': _placeholder
+           });

          };
 
          };
 

-         return initRange.apply(linearish(scale), arguments);
-       }
+         _this.originalTerms = (_this.terms || []).join();

 
 

-       // https://github.com/tc39/proposal-string-pad-start-end
+         _this.terms = function () {
+           return _this.t('terms', {
+             'default': _this.originalTerms
+           }).toLowerCase().trim().split(/\s*,+\s*/);
+         };

 
 

+         _this.increment = _this.type === 'number' ? _this.increment || 1 : undefined;
+         return _this;
+       }

 
 

+       var $$8 = _export;
+       var lastIndexOf = arrayLastIndexOf;

 
 

+       // `Array.prototype.lastIndexOf` method
+       // https://tc39.es/ecma262/#sec-array.prototype.lastindexof
+       // eslint-disable-next-line es/no-array-prototype-lastindexof -- required for testing
+       $$8({ target: 'Array', proto: true, forced: lastIndexOf !== [].lastIndexOf }, {
+         lastIndexOf: lastIndexOf
+       });

 
 

-       var ceil$1 = Math.ceil;
+       // `presetPreset` decorates a given `preset` Object
+       // with some extra methods for searching and matching geometry
+       //

 
 

-       // `String.prototype.{ padStart, padEnd }` methods implementation
-       var createMethod$6 = function (IS_END) {
-         return function ($this, maxLength, fillString) {
-           var S = String(requireObjectCoercible($this));
-           var stringLength = S.length;
-           var fillStr = fillString === undefined ? ' ' : String(fillString);
-           var intMaxLength = toLength(maxLength);
-           var fillLen, stringFiller;
-           if (intMaxLength <= stringLength || fillStr == '') return S;
-           fillLen = intMaxLength - stringLength;
-           stringFiller = stringRepeat.call(fillStr, ceil$1(fillLen / fillStr.length));
-           if (stringFiller.length > fillLen) stringFiller = stringFiller.slice(0, fillLen);
-           return IS_END ? S + stringFiller : stringFiller + S;
-         };
-       };
+       function presetPreset(presetID, preset, addable, allFields, allPresets) {
+         allFields = allFields || {};
+         allPresets = allPresets || {};

 
 

-       var stringPad = {
-         // `String.prototype.padStart` method
-         // https://tc39.github.io/ecma262/#sec-string.prototype.padstart
-         start: createMethod$6(false),
-         // `String.prototype.padEnd` method
-         // https://tc39.github.io/ecma262/#sec-string.prototype.padend
-         end: createMethod$6(true)
-       };
+         var _this = Object.assign({}, preset); // shallow copy

 
 

-       var padStart = stringPad.start;

 
 

-       var abs$3 = Math.abs;
-       var DatePrototype$1 = Date.prototype;
-       var getTime$1 = DatePrototype$1.getTime;
-       var nativeDateToISOString = DatePrototype$1.toISOString;
+         var _addable = addable || false;

 
 

-       // `Date.prototype.toISOString` method implementation
-       // https://tc39.github.io/ecma262/#sec-date.prototype.toisostring
-       // PhantomJS / old WebKit fails here:
-       var dateToIsoString = (fails(function () {
-         return nativeDateToISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
-       }) || !fails(function () {
-         nativeDateToISOString.call(new Date(NaN));
-       })) ? function toISOString() {
-         if (!isFinite(getTime$1.call(this))) throw RangeError('Invalid time value');
-         var date = this;
-         var year = date.getUTCFullYear();
-         var milliseconds = date.getUTCMilliseconds();
-         var sign = year < 0 ? '-' : year > 9999 ? '+' : '';
-         return sign + padStart(abs$3(year), sign ? 6 : 4, 0) +
-           '-' + padStart(date.getUTCMonth() + 1, 2, 0) +
-           '-' + padStart(date.getUTCDate(), 2, 0) +
-           'T' + padStart(date.getUTCHours(), 2, 0) +
-           ':' + padStart(date.getUTCMinutes(), 2, 0) +
-           ':' + padStart(date.getUTCSeconds(), 2, 0) +
-           '.' + padStart(milliseconds, 3, 0) +
-           'Z';
-       } : nativeDateToISOString;
+         var _resolvedFields; // cache

 
 

-       // `Date.prototype.toISOString` method
-       // https://tc39.github.io/ecma262/#sec-date.prototype.toisostring
-       // PhantomJS / old WebKit has a broken implementations
-       _export({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== dateToIsoString }, {
-         toISOString: dateToIsoString
-       });

 
 

-       function behaviorBreathe() {
-         var duration = 800;
-         var steps = 4;
-         var selector = '.selected.shadow, .selected .shadow';
+         var _resolvedMoreFields; // cache

 
 

-         var _selected = select(null);

 
 

-         var _classed = '';
-         var _params = {};
-         var _done = false;
+         var _searchName; // cache

 
 

-         var _timer;

 
 

-         function ratchetyInterpolator(a, b, steps, units) {
-           a = parseFloat(a);
-           b = parseFloat(b);
-           var sample = quantize().domain([0, 1]).range(d3_quantize(d3_interpolateNumber(a, b), steps));
-           return function (t) {
-             return String(sample(t)) + (units || '');
-           };
-         }
+         var _searchNameStripped; // cache

 
 

-         function reset(selection) {
-           selection.style('stroke-opacity', null).style('stroke-width', null).style('fill-opacity', null).style('r', null);
-         }

 
 

-         function setAnimationParams(transition, fromTo) {
-           var toFrom = fromTo === 'from' ? 'to' : 'from';
-           transition.styleTween('stroke-opacity', function (d) {
-             return ratchetyInterpolator(_params[d.id][toFrom].opacity, _params[d.id][fromTo].opacity, steps);
-           }).styleTween('stroke-width', function (d) {
-             return ratchetyInterpolator(_params[d.id][toFrom].width, _params[d.id][fromTo].width, steps, 'px');
-           }).styleTween('fill-opacity', function (d) {
-             return ratchetyInterpolator(_params[d.id][toFrom].opacity, _params[d.id][fromTo].opacity, steps);
-           }).styleTween('r', function (d) {
-             return ratchetyInterpolator(_params[d.id][toFrom].width, _params[d.id][fromTo].width, steps, 'px');
-           });
-         }
+         _this.id = presetID;
+         _this.safeid = utilSafeClassName(presetID); // for use in css classes, selectors, element ids

 
 

-         function calcAnimationParams(selection) {
-           selection.call(reset).each(function (d) {
-             var s = select(this);
-             var tag = s.node().tagName;
-             var p = {
-               'from': {},
-               'to': {}
-             };
-             var opacity;
-             var width; // determine base opacity and width
+         _this.originalTerms = (_this.terms || []).join();
+         _this.originalName = _this.name || '';
+         _this.originalScore = _this.matchScore || 1;
+         _this.originalReference = _this.reference || {};
+         _this.originalFields = _this.fields || [];
+         _this.originalMoreFields = _this.moreFields || [];

 
 

-             if (tag === 'circle') {
-               opacity = parseFloat(s.style('fill-opacity') || 0.5);
-               width = parseFloat(s.style('r') || 15.5);
-             } else {
-               opacity = parseFloat(s.style('stroke-opacity') || 0.7);
-               width = parseFloat(s.style('stroke-width') || 10);
-             } // calculate from/to interpolation params..
+         _this.fields = function () {
+           return _resolvedFields || (_resolvedFields = resolve('fields'));
+         };

 
 

+         _this.moreFields = function () {
+           return _resolvedMoreFields || (_resolvedMoreFields = resolve('moreFields'));
+         };

 
 

-             p.tag = tag;
-             p.from.opacity = opacity * 0.6;
-             p.to.opacity = opacity * 1.25;
-             p.from.width = width * 0.7;
-             p.to.width = width * (tag === 'circle' ? 1.5 : 1);
-             _params[d.id] = p;
-           });
-         }
+         _this.resetFields = function () {
+           return _resolvedFields = _resolvedMoreFields = null;
+         };

 
 

-         function run(surface, fromTo) {
-           var toFrom = fromTo === 'from' ? 'to' : 'from';
-           var currSelected = surface.selectAll(selector);
-           var currClassed = surface.attr('class');
+         _this.tags = _this.tags || {};
+         _this.addTags = _this.addTags || _this.tags;
+         _this.removeTags = _this.removeTags || _this.addTags;
+         _this.geometry = _this.geometry || [];

 
 

-           if (_done || currSelected.empty()) {
-             _selected.call(reset);
+         _this.matchGeometry = function (geom) {
+           return _this.geometry.indexOf(geom) >= 0;
+         };

 
 

-             _selected = select(null);
-             return;
-           }
+         _this.matchAllGeometry = function (geoms) {
+           return geoms.every(_this.matchGeometry);
+         };

 
 

-           if (!fastDeepEqual(currSelected.data(), _selected.data()) || currClassed !== _classed) {
-             _selected.call(reset);
+         _this.matchScore = function (entityTags) {
+           var tags = _this.tags;
+           var seen = {};
+           var score = 0; // match on tags

 
 

-             _classed = currClassed;
-             _selected = currSelected.call(calcAnimationParams);
-           }
+           for (var k in tags) {
+             seen[k] = true;

 
 

-           var didCallNextRun = false;
+             if (entityTags[k] === tags[k]) {
+               score += _this.originalScore;
+             } else if (tags[k] === '*' && k in entityTags) {
+               score += _this.originalScore / 2;
+             } else {
+               return -1;
+             }
+           } // boost score for additional matches in addTags - #6802

 
 

-           _selected.transition().duration(duration).call(setAnimationParams, fromTo).on('end', function () {
-             // `end` event is called for each selected element, but we want
-             // it to run only once
-             if (!didCallNextRun) {
-               surface.call(run, toFrom);
-               didCallNextRun = true;
-             } // if entity was deselected, remove breathe styling

 
 

+           var addTags = _this.addTags;

 
 

-             if (!select(this).classed('selected')) {
-               reset(select(this));
+           for (var _k in addTags) {
+             if (!seen[_k] && entityTags[_k] === addTags[_k]) {
+               score += _this.originalScore;

              }
              }

-           });
-         }
+           }

 
 

-         function behavior(surface) {
-           _done = false;
-           _timer = timer(function () {
-             // wait for elements to actually become selected
-             if (surface.selectAll(selector).empty()) {
-               return false;
-             }
+           return score;
+         };

 
 

-             surface.call(run, 'from');
+         _this.t = function (scope, options) {
+           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
+           return _t(textID, options);
+         };

 
 

-             _timer.stop();
+         _this.t.html = function (scope, options) {
+           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
+           return _t.html(textID, options);
+         };

 
 

-             return true;
-           }, 20);
-         }
+         _this.name = function () {
+           return _this.t('name', {
+             'default': _this.originalName
+           });
+         };

 
 

-         behavior.restartIfNeeded = function (surface) {
-           if (_selected.empty()) {
-             surface.call(run, 'from');
+         _this.nameLabel = function () {
+           return _this.t.html('name', {
+             'default': _this.originalName
+           });
+         };

 
 

-             if (_timer) {
-               _timer.stop();
-             }
+         _this.subtitle = function () {
+           if (_this.suggestion) {
+             var path = presetID.split('/');
+             path.pop(); // remove brand name
+
+             return _t('_tagging.presets.presets.' + path.join('/') + '.name');

            }
            }

+
+           return null;

          };
 
          };
 

-         behavior.off = function () {
-           _done = true;
+         _this.subtitleLabel = function () {
+           if (_this.suggestion) {
+             var path = presetID.split('/');
+             path.pop(); // remove brand name

 
 

-           if (_timer) {
-             _timer.stop();
+             return _t.html('_tagging.presets.presets.' + path.join('/') + '.name');

            }
 
            }
 

-           _selected.interrupt().call(reset);
+           return null;

          };
 
          };
 

-         return behavior;
-       }
-
-       /* Creates a keybinding behavior for an operation */
-       function behaviorOperation(context) {
-         var _operation;
+         _this.terms = function () {
+           return _this.t('terms', {
+             'default': _this.originalTerms
+           }).toLowerCase().trim().split(/\s*,+\s*/);
+         };

 
 

-         function keypress(d3_event) {
-           // prevent operations during low zoom selection
-           if (!context.map().withinEditableZoom()) return;
-           if (_operation.availableForKeypress && !_operation.availableForKeypress()) return;
-           d3_event.preventDefault();
+         _this.searchName = function () {
+           if (!_searchName) {
+             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();
+           }

 
 

-           var disabled = _operation.disabled();
+           return _searchName;
+         };

 
 

-           if (disabled) {
-             context.ui().flash.duration(4000).iconName('#iD-operation-' + _operation.id).iconClass('operation disabled').label(_operation.tooltip)();
-           } else {
-             context.ui().flash.duration(2000).iconName('#iD-operation-' + _operation.id).iconClass('operation').label(_operation.annotation() || _operation.title)();
-             if (_operation.point) _operation.point(null);
+         _this.searchNameStripped = function () {
+           if (!_searchNameStripped) {
+             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts

 
 

-             _operation();
-           }
-         }
+             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics

 
 

-         function behavior() {
-           if (_operation && _operation.available()) {
-             context.keybinding().on(_operation.keys, keypress);
+             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');

            }
 
            }
 

-           return behavior;
-         }
-
-         behavior.off = function () {
-           context.keybinding().off(_operation.keys);
+           return _searchNameStripped;

          };
 
          };
 

-         behavior.which = function (_) {
-           if (!arguments.length) return _operation;
-           _operation = _;
-           return behavior;
+         _this.isFallback = function () {
+           var tagCount = Object.keys(_this.tags).length;
+           return tagCount === 0 || tagCount === 1 && _this.tags.hasOwnProperty('area');

          };
 
          };
 

-         return behavior;
-       }
-
-       function operationCircularize(context, selectedIDs) {
-         var _extent;
+         _this.addable = function (val) {
+           if (!arguments.length) return _addable;
+           _addable = val;
+           return _this;
+         };

 
 

-         var _actions = selectedIDs.map(getAction).filter(Boolean);
+         _this.reference = function () {
+           // Lookup documentation on Wikidata...
+           var qid = _this.tags.wikidata || _this.tags['flag:wikidata'] || _this.tags['brand:wikidata'] || _this.tags['network:wikidata'] || _this.tags['operator:wikidata'];

 
 

-         var _amount = _actions.length === 1 ? 'single' : 'multiple';
+           if (qid) {
+             return {
+               qid: qid
+             };
+           } // Lookup documentation on OSM Wikibase...

 
 

-         var _coords = utilGetAllNodes(selectedIDs, context.graph()).map(function (n) {
-           return n.loc;
-         });

 
 

-         function getAction(entityID) {
-           var entity = context.entity(entityID);
-           if (entity.type !== 'way' || new Set(entity.nodes).size <= 1) return null;
+           var key = _this.originalReference.key || Object.keys(utilObjectOmit(_this.tags, 'name'))[0];
+           var value = _this.originalReference.value || _this.tags[key];

 
 

-           if (!_extent) {
-             _extent = entity.extent(context.graph());
+           if (value === '*') {
+             return {
+               key: key
+             };

            } else {
            } else {

-             _extent = _extent.extend(entity.extent(context.graph()));
+             return {
+               key: key,
+               value: value
+             };

            }
            }

+         };

 
 

-           return actionCircularize(entityID, context.projection);
-         }
-
-         var operation = function operation() {
-           if (!_actions.length) return;
+         _this.unsetTags = function (tags, geometry, ignoringKeys, skipFieldDefaults) {
+           // allow manually keeping some tags
+           var removeTags = ignoringKeys ? utilObjectOmit(_this.removeTags, ignoringKeys) : _this.removeTags;
+           tags = utilObjectOmit(tags, Object.keys(removeTags));

 
 

-           var combinedAction = function combinedAction(graph, t) {
-             _actions.forEach(function (action) {
-               if (!action.disabled(graph)) {
-                 graph = action(graph, t);
+           if (geometry && !skipFieldDefaults) {
+             _this.fields().forEach(function (field) {
+               if (field.matchGeometry(geometry) && field.key && field["default"] === tags[field.key]) {
+                 delete tags[field.key];

                }
              });
                }
              });

+           }

 
 

-             return graph;
-           };
-
-           combinedAction.transitionable = true;
-           context.perform(combinedAction, operation.annotation());
-           window.setTimeout(function () {
-             context.validator().validate();
-           }, 300); // after any transition
+           delete tags.area;
+           return tags;

          };
 
          };
 

-         operation.available = function () {
-           return _actions.length && selectedIDs.length === _actions.length;
-         }; // don't cache this because the visible extent could change
-
-
-         operation.disabled = function () {
-           if (!_actions.length) return '';
-
-           var actionDisableds = _actions.map(function (action) {
-             return action.disabled(context.graph());
-           }).filter(Boolean);
+         _this.setTags = function (tags, geometry, skipFieldDefaults) {
+           var addTags = _this.addTags;
+           tags = Object.assign({}, tags); // shallow copy

 
 

-           if (actionDisableds.length === _actions.length) {
-             // none of the features can be circularized
-             if (new Set(actionDisableds).size > 1) {
-               return 'multiple_blockers';
+           for (var k in addTags) {
+             if (addTags[k] === '*') {
+               // if this tag is ancillary, don't override an existing value since any value is okay
+               if (_this.tags[k] || !tags[k] || tags[k] === 'no') {
+                 tags[k] = 'yes';
+               }
+             } else {
+               tags[k] = addTags[k];

              }
              }

+           } // Add area=yes if necessary.
+           // This is necessary if the geometry is already an area (e.g. user drew an area) AND any of:
+           // 1. chosen preset could be either an area or a line (`barrier=city_wall`)
+           // 2. chosen preset doesn't have a key in osmAreaKeys (`railway=station`)

 
 

-             return actionDisableds[0];
-           } else if (_extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           }

 
 

-           return false;
+           if (!addTags.hasOwnProperty('area')) {
+             delete tags.area;

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+             if (geometry === 'area') {
+               var needsAreaTag = true;

 
 

-             if (osm) {
-               var missing = _coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+               if (_this.geometry.indexOf('line') === -1) {
+                 for (var _k2 in addTags) {
+                   if (_k2 in osmAreaKeys) {
+                     needsAreaTag = false;
+                     break;
+                   }
+                 }
+               }

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
+               if (needsAreaTag) {
+                 tags.area = 'yes';

                }
              }
                }
              }

+           }

 
 

-             return false;
+           if (geometry && !skipFieldDefaults) {
+             _this.fields().forEach(function (field) {
+               if (field.matchGeometry(geometry) && field.key && !tags[field.key] && field["default"]) {
+                 tags[field.key] = field["default"];
+               }
+             });

            }
            }

-         };

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.circularize.' + disable + '.' + _amount) : _t('operations.circularize.description.' + _amount);
-         };
+           return tags;
+         }; // For a preset without fields, use the fields of the parent preset.
+         // Replace {preset} placeholders with the fields of the specified presets.

 
 

-         operation.annotation = function () {
-           return _t('operations.circularize.annotation.feature', {
-             n: _actions.length
-           });
-         };

 
 

-         operation.id = 'circularize';
-         operation.keys = [_t('operations.circularize.key')];
-         operation.title = _t('operations.circularize.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         function resolve(which) {
+           var fieldIDs = which === 'fields' ? _this.originalFields : _this.originalMoreFields;
+           var resolved = [];
+           fieldIDs.forEach(function (fieldID) {
+             var match = fieldID.match(/\{(.*)\}/);

 
 

-       // For example, ⌘Z -> Ctrl+Z
+             if (match !== null) {
+               // a presetID wrapped in braces {}
+               resolved = resolved.concat(inheritFields(match[1], which));
+             } else if (allFields[fieldID]) {
+               // a normal fieldID
+               resolved.push(allFields[fieldID]);
+             } else {
+               console.log("Cannot resolve \"".concat(fieldID, "\" found in ").concat(_this.id, ".").concat(which)); // eslint-disable-line no-console
+             }
+           }); // no fields resolved, so use the parent's if possible

 
 

-       var uiCmd = function uiCmd(code) {
-         var detected = utilDetect();
+           if (!resolved.length) {
+             var endIndex = _this.id.lastIndexOf('/');

 
 

-         if (detected.os === 'mac') {
-           return code;
-         }
+             var parentID = endIndex && _this.id.substring(0, endIndex);

 
 

-         if (detected.os === 'win') {
-           if (code === '⌘⇧Z') return 'Ctrl+Y';
-         }
+             if (parentID) {
+               resolved = inheritFields(parentID, which);
+             }
+           }

 
 

-         var result = '',
-             replacements = {
-           '⌘': 'Ctrl',
-           '⇧': 'Shift',
-           '⌥': 'Alt',
-           '⌫': 'Backspace',
-           '⌦': 'Delete'
-         };
+           return utilArrayUniq(resolved); // returns an array of fields to inherit from the given presetID, if found

 
 

-         for (var i = 0; i < code.length; i++) {
-           if (code[i] in replacements) {
-             result += replacements[code[i]] + (i < code.length - 1 ? '+' : '');
-           } else {
-             result += code[i];
+           function inheritFields(presetID, which) {
+             var parent = allPresets[presetID];
+             if (!parent) return [];
+
+             if (which === 'fields') {
+               return parent.fields().filter(shouldInherit);
+             } else if (which === 'moreFields') {
+               return parent.moreFields();
+             } else {
+               return [];
+             }
+           } // Skip `fields` for the keys which define the preset.
+           // These are usually `typeCombo` fields like `shop=*`
+
+
+           function shouldInherit(f) {
+             if (f.key && _this.tags[f.key] !== undefined && // inherit anyway if multiple values are allowed or just a checkbox
+             f.type !== 'multiCombo' && f.type !== 'semiCombo' && f.type !== 'manyCombo' && f.type !== 'check') return false;
+             return true;

            }
          }
 
            }
          }
 

-         return result;
-       }; // return a display-focused string for a given keyboard code
+         return _this;
+       }

 
 

-       uiCmd.display = function (code) {
-         if (code.length !== 1) return code;
-         var detected = utilDetect();
-         var mac = detected.os === 'mac';
-         var replacements = {
-           '⌘': mac ? '⌘ ' + _t('shortcuts.key.cmd') : _t('shortcuts.key.ctrl'),
-           '⇧': mac ? '⇧ ' + _t('shortcuts.key.shift') : _t('shortcuts.key.shift'),
-           '⌥': mac ? '⌥ ' + _t('shortcuts.key.option') : _t('shortcuts.key.alt'),
-           '⌃': mac ? '⌃ ' + _t('shortcuts.key.ctrl') : _t('shortcuts.key.ctrl'),
-           '⌫': mac ? '⌫ ' + _t('shortcuts.key.delete') : _t('shortcuts.key.backspace'),
-           '⌦': mac ? '⌦ ' + _t('shortcuts.key.del') : _t('shortcuts.key.del'),
-           '↖': mac ? '↖ ' + _t('shortcuts.key.pgup') : _t('shortcuts.key.pgup'),
-           '↘': mac ? '↘ ' + _t('shortcuts.key.pgdn') : _t('shortcuts.key.pgdn'),
-           '⇞': mac ? '⇞ ' + _t('shortcuts.key.home') : _t('shortcuts.key.home'),
-           '⇟': mac ? '⇟ ' + _t('shortcuts.key.end') : _t('shortcuts.key.end'),
-           '↵': mac ? '⏎ ' + _t('shortcuts.key.return') : _t('shortcuts.key.enter'),
-           '⎋': mac ? '⎋ ' + _t('shortcuts.key.esc') : _t('shortcuts.key.esc'),
-           '☰': mac ? '☰ ' + _t('shortcuts.key.menu') : _t('shortcuts.key.menu')
-         };
-         return replacements[code] || code;
-       };
+       var _mainPresetIndex = presetIndex(); // singleton
+       // `presetIndex` wraps a `presetCollection`
+       // with methods for loading new data and returning defaults
+       //

 
 

-       function operationDelete(context, selectedIDs) {
-         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
-         var action = actionDeleteMultiple(selectedIDs);
-         var nodes = utilGetAllNodes(selectedIDs, context.graph());
-         var coords = nodes.map(function (n) {
-           return n.loc;
-         });
-         var extent = utilTotalExtent(selectedIDs, context.graph());
+       function presetIndex() {
+         var dispatch = dispatch$8('favoritePreset', 'recentsChange');
+         var MAXRECENTS = 30; // seed the preset lists with geometry fallbacks

 
 

-         var operation = function operation() {
-           var nextSelectedID;
-           var nextSelectedLoc;
+         var POINT = presetPreset('point', {
+           name: 'Point',
+           tags: {},
+           geometry: ['point', 'vertex'],
+           matchScore: 0.1
+         });
+         var LINE = presetPreset('line', {
+           name: 'Line',
+           tags: {},
+           geometry: ['line'],
+           matchScore: 0.1
+         });
+         var AREA = presetPreset('area', {
+           name: 'Area',
+           tags: {
+             area: 'yes'
+           },
+           geometry: ['area'],
+           matchScore: 0.1
+         });
+         var RELATION = presetPreset('relation', {
+           name: 'Relation',
+           tags: {},
+           geometry: ['relation'],
+           matchScore: 0.1
+         });

 
 

-           if (selectedIDs.length === 1) {
-             var id = selectedIDs[0];
-             var entity = context.entity(id);
-             var geometry = entity.geometry(context.graph());
-             var parents = context.graph().parentWays(entity);
-             var parent = parents[0]; // Select the next closest node in the way.
+         var _this = presetCollection([POINT, LINE, AREA, RELATION]);

 
 

-             if (geometry === 'vertex') {
-               var nodes = parent.nodes;
-               var i = nodes.indexOf(id);
+         var _presets = {
+           point: POINT,
+           line: LINE,
+           area: AREA,
+           relation: RELATION
+         };
+         var _defaults = {
+           point: presetCollection([POINT]),
+           vertex: presetCollection([POINT]),
+           line: presetCollection([LINE]),
+           area: presetCollection([AREA]),
+           relation: presetCollection([RELATION])
+         };
+         var _fields = {};
+         var _categories = {};
+         var _universal = [];
+         var _addablePresetIDs = null; // Set of preset IDs that the user can add

 
 

-               if (i === 0) {
-                 i++;
-               } else if (i === nodes.length - 1) {
-                 i--;
-               } else {
-                 var a = geoSphericalDistance(entity.loc, context.entity(nodes[i - 1]).loc);
-                 var b = geoSphericalDistance(entity.loc, context.entity(nodes[i + 1]).loc);
-                 i = a < b ? i - 1 : i + 1;
-               }
+         var _recents;

 
 

-               nextSelectedID = nodes[i];
-               nextSelectedLoc = context.entity(nextSelectedID).loc;
-             }
-           }
+         var _favorites; // Index of presets by (geometry, tag key).

 
 

-           context.perform(action, operation.annotation());
-           context.validator().validate();

 
 

-           if (nextSelectedID && nextSelectedLoc) {
-             if (context.hasEntity(nextSelectedID)) {
-               context.enter(modeSelect(context, [nextSelectedID]).follow(true));
-             } else {
-               context.map().centerEase(nextSelectedLoc);
-               context.enter(modeBrowse(context));
-             }
-           } else {
-             context.enter(modeBrowse(context));
-           }
+         var _geometryIndex = {
+           point: {},
+           vertex: {},
+           line: {},
+           area: {},
+           relation: {}

          };
 
          };
 

-         operation.available = function () {
-           return true;
-         };
+         var _loadPromise;

 
 

-         operation.disabled = function () {
-           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           } else if (selectedIDs.some(protectedMember)) {
-             return 'part_of_relation';
-           } else if (selectedIDs.some(incompleteRelation)) {
-             return 'incomplete_relation';
-           } else if (selectedIDs.some(hasWikidataTag)) {
-             return 'has_wikidata_tag';
-           }
+         _this.ensureLoaded = function () {
+           if (_loadPromise) return _loadPromise;
+           return _loadPromise = Promise.all([_mainFileFetcher.get('preset_categories'), _mainFileFetcher.get('preset_defaults'), _mainFileFetcher.get('preset_presets'), _mainFileFetcher.get('preset_fields')]).then(function (vals) {
+             _this.merge({
+               categories: vals[0],
+               defaults: vals[1],
+               presets: vals[2],
+               fields: vals[3]
+             });
+
+             osmSetAreaKeys(_this.areaKeys());
+             osmSetPointTags(_this.pointTags());
+             osmSetVertexTags(_this.vertexTags());
+           });
+         }; // `merge` accepts an object containing new preset data (all properties optional):
+         // {
+         //   fields: {},
+         //   presets: {},
+         //   categories: {},
+         //   defaults: {},
+         //   featureCollection: {}
+         //}

 
 

-           return false;

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+         _this.merge = function (d) {
+           var newLocationSets = []; // Merge Fields

 
 

-             if (osm) {
-               var missing = coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+           if (d.fields) {
+             Object.keys(d.fields).forEach(function (fieldID) {
+               var f = d.fields[fieldID];

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
+               if (f) {
+                 // add or replace
+                 f = presetField(fieldID, f);
+                 if (f.locationSet) newLocationSets.push(f);
+                 _fields[fieldID] = f;
+               } else {
+                 // remove
+                 delete _fields[fieldID];

                }
                }

-             }
-
-             return false;
-           }
+             });
+           } // Merge Presets

 
 

-           function hasWikidataTag(id) {
-             var entity = context.entity(id);
-             return entity.tags.wikidata && entity.tags.wikidata.trim().length > 0;
-           }

 
 

-           function incompleteRelation(id) {
-             var entity = context.entity(id);
-             return entity.type === 'relation' && !entity.isComplete(context.graph());
-           }
+           if (d.presets) {
+             Object.keys(d.presets).forEach(function (presetID) {
+               var p = d.presets[presetID];

 
 

-           function protectedMember(id) {
-             var entity = context.entity(id);
-             if (entity.type !== 'way') return false;
-             var parents = context.graph().parentRelations(entity);
+               if (p) {
+                 // add or replace
+                 var isAddable = !_addablePresetIDs || _addablePresetIDs.has(presetID);

 
 

-             for (var i = 0; i < parents.length; i++) {
-               var parent = parents[i];
-               var type = parent.tags.type;
-               var role = parent.memberById(id).role || 'outer';
+                 p = presetPreset(presetID, p, isAddable, _fields, _presets);
+                 if (p.locationSet) newLocationSets.push(p);
+                 _presets[presetID] = p;
+               } else {
+                 // remove (but not if it's a fallback)
+                 var existing = _presets[presetID];

 
 

-               if (type === 'route' || type === 'boundary' || type === 'multipolygon' && role === 'outer') {
-                 return true;
+                 if (existing && !existing.isFallback()) {
+                   delete _presets[presetID];
+                 }

                }
                }

-             }
-
-             return false;
-           }
-         };
-
-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.delete.' + disable + '.' + multi) : _t('operations.delete.description.' + multi);
-         };
+             });
+           } // Merge Categories

 
 

-         operation.annotation = function () {
-           return selectedIDs.length === 1 ? _t('operations.delete.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.delete.annotation.feature', {
-             n: selectedIDs.length
-           });
-         };

 
 

-         operation.id = 'delete';
-         operation.keys = [uiCmd('⌘⌫'), uiCmd('⌘⌦'), uiCmd('⌦')];
-         operation.title = _t('operations.delete.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+           if (d.categories) {
+             Object.keys(d.categories).forEach(function (categoryID) {
+               var c = d.categories[categoryID];

 
 

-       function operationOrthogonalize(context, selectedIDs) {
-         var _extent;
+               if (c) {
+                 // add or replace
+                 c = presetCategory(categoryID, c, _presets);
+                 if (c.locationSet) newLocationSets.push(c);
+                 _categories[categoryID] = c;
+               } else {
+                 // remove
+                 delete _categories[categoryID];
+               }
+             });
+           } // Rebuild _this.collection after changing presets and categories

 
 

-         var _type;

 
 

-         var _actions = selectedIDs.map(chooseAction).filter(Boolean);
+           _this.collection = Object.values(_presets).concat(Object.values(_categories)); // Merge Defaults

 
 

-         var _amount = _actions.length === 1 ? 'single' : 'multiple';
+           if (d.defaults) {
+             Object.keys(d.defaults).forEach(function (geometry) {
+               var def = d.defaults[geometry];

 
 

-         var _coords = utilGetAllNodes(selectedIDs, context.graph()).map(function (n) {
-           return n.loc;
-         });
+               if (Array.isArray(def)) {
+                 // add or replace
+                 _defaults[geometry] = presetCollection(def.map(function (id) {
+                   return _presets[id] || _categories[id];
+                 }).filter(Boolean));
+               } else {
+                 // remove
+                 delete _defaults[geometry];
+               }
+             });
+           } // Rebuild universal fields array

 
 

-         function chooseAction(entityID) {
-           var entity = context.entity(entityID);
-           var geometry = entity.geometry(context.graph());

 
 

-           if (!_extent) {
-             _extent = entity.extent(context.graph());
-           } else {
-             _extent = _extent.extend(entity.extent(context.graph()));
-           } // square a line/area
+           _universal = Object.values(_fields).filter(function (field) {
+             return field.universal;
+           }); // Reset all the preset fields - they'll need to be resolved again

 
 

+           Object.values(_presets).forEach(function (preset) {
+             return preset.resetFields();
+           }); // Rebuild geometry index

 
 

-           if (entity.type === 'way' && new Set(entity.nodes).size > 2) {
-             if (_type && _type !== 'feature') return null;
-             _type = 'feature';
-             return actionOrthogonalize(entityID, context.projection); // square a single vertex
-           } else if (geometry === 'vertex') {
-             if (_type && _type !== 'corner') return null;
-             _type = 'corner';
-             var graph = context.graph();
-             var parents = graph.parentWays(entity);
+           _geometryIndex = {
+             point: {},
+             vertex: {},
+             line: {},
+             area: {},
+             relation: {}
+           };

 
 

-             if (parents.length === 1) {
-               var way = parents[0];
+           _this.collection.forEach(function (preset) {
+             (preset.geometry || []).forEach(function (geometry) {
+               var g = _geometryIndex[geometry];

 
 

-               if (way.nodes.indexOf(entityID) !== -1) {
-                 return actionOrthogonalize(way.id, context.projection, entityID);
+               for (var key in preset.tags) {
+                 g[key] = g[key] || {};
+                 var value = preset.tags[key];
+                 (g[key][value] = g[key][value] || []).push(preset);

                }
                }

-             }
-           }
+             });
+           }); // Merge Custom Features

 
 

-           return null;
-         }

 
 

-         var operation = function operation() {
-           if (!_actions.length) return;
+           if (d.featureCollection && Array.isArray(d.featureCollection.features)) {
+             _mainLocations.mergeCustomGeoJSON(d.featureCollection);
+           } // Resolve all locationSet features.

 
 

-           var combinedAction = function combinedAction(graph, t) {
-             _actions.forEach(function (action) {
-               if (!action.disabled(graph)) {
-                 graph = action(graph, t);
-               }
-             });

 
 

-             return graph;
-           };
+           if (newLocationSets.length) {
+             _mainLocations.mergeLocationSets(newLocationSets);
+           }

 
 

-           combinedAction.transitionable = true;
-           context.perform(combinedAction, operation.annotation());
-           window.setTimeout(function () {
-             context.validator().validate();
-           }, 300); // after any transition
+           return _this;

          };
 
          };
 

-         operation.available = function () {
-           return _actions.length && selectedIDs.length === _actions.length;
-         }; // don't cache this because the visible extent could change
+         _this.match = function (entity, resolver) {
+           return resolver["transient"](entity, 'presetMatch', function () {
+             var geometry = entity.geometry(resolver); // Treat entities on addr:interpolation lines as points, not vertices - #3241

 
 

+             if (geometry === 'vertex' && entity.isOnAddressLine(resolver)) {
+               geometry = 'point';
+             }

 
 

-         operation.disabled = function () {
-           if (!_actions.length) return '';
+             var entityExtent = entity.extent(resolver);
+             return _this.matchTags(entity.tags, geometry, entityExtent.center());
+           });
+         };

 
 

-           var actionDisableds = _actions.map(function (action) {
-             return action.disabled(context.graph());
-           }).filter(Boolean);
+         _this.matchTags = function (tags, geometry, loc) {
+           var keyIndex = _geometryIndex[geometry];
+           var bestScore = -1;
+           var bestMatch;
+           var matchCandidates = [];

 
 

-           if (actionDisableds.length === _actions.length) {
-             // none of the features can be squared
-             if (new Set(actionDisableds).size > 1) {
-               return 'multiple_blockers';
-             }
+           for (var k in tags) {
+             var indexMatches = [];
+             var valueIndex = keyIndex[k];
+             if (!valueIndex) continue;
+             var keyValueMatches = valueIndex[tags[k]];
+             if (keyValueMatches) indexMatches.push.apply(indexMatches, _toConsumableArray(keyValueMatches));
+             var keyStarMatches = valueIndex['*'];
+             if (keyStarMatches) indexMatches.push.apply(indexMatches, _toConsumableArray(keyStarMatches));
+             if (indexMatches.length === 0) continue;
+
+             for (var i = 0; i < indexMatches.length; i++) {
+               var candidate = indexMatches[i];
+               var score = candidate.matchScore(tags);
+
+               if (score === -1) {
+                 continue;
+               }

 
 

-             return actionDisableds[0];
-           } else if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           }
+               matchCandidates.push({
+                 score: score,
+                 candidate: candidate
+               });

 
 

-           return false;
+               if (score > bestScore) {
+                 bestScore = score;
+                 bestMatch = candidate;
+               }
+             }
+           }

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+           if (bestMatch && bestMatch.locationSetID && bestMatch.locationSetID !== '+[Q2]' && Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);

 
 

-             if (osm) {
-               var missing = _coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
+             if (!validLocations[bestMatch.locationSetID]) {
+               matchCandidates.sort(function (a, b) {
+                 return a.score < b.score ? 1 : -1;

                });
 
                });
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
+               for (var _i = 0; _i < matchCandidates.length; _i++) {
+                 var candidateScore = matchCandidates[_i];
+
+                 if (!candidateScore.candidate.locationSetID || validLocations[candidateScore.candidate.locationSetID]) {
+                   bestMatch = candidateScore.candidate;
+                   bestScore = candidateScore.score;
+                   break;
+                 }

                }
              }
                }
              }

+           } // If any part of an address is present, allow fallback to "Address" preset - #4353

 
 

-             return false;
+
+           if (!bestMatch || bestMatch.isFallback()) {
+             for (var _k in tags) {
+               if (/^addr:/.test(_k) && keyIndex['addr:*'] && keyIndex['addr:*']['*']) {
+                 bestMatch = keyIndex['addr:*']['*'][0];
+                 break;
+               }
+             }

            }
            }

-         };

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.orthogonalize.' + disable + '.' + _amount) : _t('operations.orthogonalize.description.' + _type + '.' + _amount);
+           return bestMatch || _this.fallback(geometry);

          };
 
          };
 

-         operation.annotation = function () {
-           return _t('operations.orthogonalize.annotation.' + _type, {
-             n: _actions.length
+         _this.allowsVertex = function (entity, resolver) {
+           if (entity.type !== 'node') return false;
+           if (Object.keys(entity.tags).length === 0) return true;
+           return resolver["transient"](entity, 'vertexMatch', function () {
+             // address lines allow vertices to act as standalone points
+             if (entity.isOnAddressLine(resolver)) return true;
+             var geometries = osmNodeGeometriesForTags(entity.tags);
+             if (geometries.vertex) return true;
+             if (geometries.point) return false; // allow vertices for unspecified points
+
+             return true;

            });
            });

-         };
+         }; // Because of the open nature of tagging, iD will never have a complete
+         // list of tags used in OSM, so we want it to have logic like "assume
+         // that a closed way with an amenity tag is an area, unless the amenity
+         // is one of these specific types". This function computes a structure
+         // that allows testing of such conditions, based on the presets designated
+         // as as supporting (or not supporting) the area geometry.
+         //
+         // The returned object L is a keeplist/discardlist of tags. A closed way
+         // with a tag (k, v) is considered to be an area if `k in L && !(v in L[k])`
+         // (see `Way#isArea()`). In other words, the keys of L form the keeplist,
+         // and the subkeys form the discardlist.

 
 

-         operation.id = 'orthogonalize';
-         operation.keys = [_t('operations.orthogonalize.key')];
-         operation.title = _t('operations.orthogonalize.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }

 
 

-       function operationReflectShort(context, selectedIDs) {
-         return operationReflect(context, selectedIDs, 'short');
-       }
-       function operationReflectLong(context, selectedIDs) {
-         return operationReflect(context, selectedIDs, 'long');
-       }
-       function operationReflect(context, selectedIDs, axis) {
-         axis = axis || 'long';
-         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
-         var nodes = utilGetAllNodes(selectedIDs, context.graph());
-         var coords = nodes.map(function (n) {
-           return n.loc;
-         });
-         var extent = utilTotalExtent(selectedIDs, context.graph());
+         _this.areaKeys = function () {
+           // The ignore list is for keys that imply lines. (We always add `area=yes` for exceptions)
+           var ignore = ['barrier', 'highway', 'footway', 'railway', 'junction', 'type'];
+           var areaKeys = {}; // ignore name-suggestion-index and deprecated presets

 
 

-         var operation = function operation() {
-           var action = actionReflect(selectedIDs, context.projection).useLongAxis(Boolean(axis === 'long'));
-           context.perform(action, operation.annotation());
-           window.setTimeout(function () {
-             context.validator().validate();
-           }, 300); // after any transition
-         };
+           var presets = _this.collection.filter(function (p) {
+             return !p.suggestion && !p.replacement;
+           }); // keeplist

 
 

-         operation.available = function () {
-           return nodes.length >= 3;
-         }; // don't cache this because the visible extent could change

 
 

+           presets.forEach(function (p) {
+             var keys = p.tags && Object.keys(p.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag

 
 

-         operation.disabled = function () {
-           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           } else if (selectedIDs.some(incompleteRelation)) {
-             return 'incomplete_relation';
-           }
+             if (!key) return;
+             if (ignore.indexOf(key) !== -1) return;

 
 

-           return false;
+             if (p.geometry.indexOf('area') !== -1) {
+               // probably an area..
+               areaKeys[key] = areaKeys[key] || {};
+             }
+           }); // discardlist

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+           presets.forEach(function (p) {
+             var key;

 
 

-             if (osm) {
-               var missing = coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+             for (key in p.addTags) {
+               // examine all addTags to get a better sense of what can be tagged on lines - #6800
+               var value = p.addTags[key];

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
+               if (key in areaKeys && // probably an area...
+               p.geometry.indexOf('line') !== -1 && // but sometimes a line
+               value !== '*') {
+                 areaKeys[key][value] = true;

                }
              }
                }
              }

-
-             return false;
-           }
-
-           function incompleteRelation(id) {
-             var entity = context.entity(id);
-             return entity.type === 'relation' && !entity.isComplete(context.graph());
-           }
-         };
-
-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.reflect.' + disable + '.' + multi) : _t('operations.reflect.description.' + axis + '.' + multi);
-         };
-
-         operation.annotation = function () {
-           return _t('operations.reflect.annotation.' + axis + '.feature', {
-             n: selectedIDs.length

            });
            });

+           return areaKeys;

          };
 
          };
 

-         operation.id = 'reflect-' + axis;
-         operation.keys = [_t('operations.reflect.key.' + axis)];
-         operation.title = _t('operations.reflect.title.' + axis);
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         _this.pointTags = function () {
+           return _this.collection.reduce(function (pointTags, d) {
+             // ignore name-suggestion-index, deprecated, and generic presets
+             if (d.suggestion || d.replacement || d.searchable === false) return pointTags; // only care about the primary tag

 
 

-       function operationMove(context, selectedIDs) {
-         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
-         var nodes = utilGetAllNodes(selectedIDs, context.graph());
-         var coords = nodes.map(function (n) {
-           return n.loc;
-         });
-         var extent = utilTotalExtent(selectedIDs, context.graph());
+             var keys = d.tags && Object.keys(d.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag

 
 

-         var operation = function operation() {
-           context.enter(modeMove(context, selectedIDs));
-         };
+             if (!key) return pointTags; // if this can be a point

 
 

-         operation.available = function () {
-           return selectedIDs.length > 1 || context.entity(selectedIDs[0]).type !== 'node';
-         };
+             if (d.geometry.indexOf('point') !== -1) {
+               pointTags[key] = pointTags[key] || {};
+               pointTags[key][d.tags[key]] = true;
+             }

 
 

-         operation.disabled = function () {
-           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           } else if (selectedIDs.some(incompleteRelation)) {
-             return 'incomplete_relation';
-           }
+             return pointTags;
+           }, {});
+         };

 
 

-           return false;
+         _this.vertexTags = function () {
+           return _this.collection.reduce(function (vertexTags, d) {
+             // ignore name-suggestion-index, deprecated, and generic presets
+             if (d.suggestion || d.replacement || d.searchable === false) return vertexTags; // only care about the primary tag

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+             var keys = d.tags && Object.keys(d.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag

 
 

-             if (osm) {
-               var missing = coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+             if (!key) return vertexTags; // if this can be a vertex

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
-               }
+             if (d.geometry.indexOf('vertex') !== -1) {
+               vertexTags[key] = vertexTags[key] || {};
+               vertexTags[key][d.tags[key]] = true;

              }
 
              }
 

-             return false;
-           }
-
-           function incompleteRelation(id) {
-             var entity = context.entity(id);
-             return entity.type === 'relation' && !entity.isComplete(context.graph());
-           }
+             return vertexTags;
+           }, {});

          };
 
          };
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.move.' + disable + '.' + multi) : _t('operations.move.description.' + multi);
+         _this.field = function (id) {
+           return _fields[id];

          };
 
          };
 

-         operation.annotation = function () {
-           return selectedIDs.length === 1 ? _t('operations.move.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.move.annotation.feature', {
-             n: selectedIDs.length
-           });
+         _this.universal = function () {
+           return _universal;

          };
 
          };
 

-         operation.id = 'move';
-         operation.keys = [_t('operations.move.key')];
-         operation.title = _t('operations.move.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         operation.mouseOnly = true;
-         return operation;
-       }
+         _this.defaults = function (geometry, n, startWithRecents, loc) {
+           var recents = [];

 
 

-       function modeRotate(context, entityIDs) {
-         var mode = {
-           id: 'rotate',
-           button: 'browse'
-         };
-         var keybinding = utilKeybinding('rotate');
-         var behaviors = [behaviorEdit(context), operationCircularize(context, entityIDs).behavior, operationDelete(context, entityIDs).behavior, operationMove(context, entityIDs).behavior, operationOrthogonalize(context, entityIDs).behavior, operationReflectLong(context, entityIDs).behavior, operationReflectShort(context, entityIDs).behavior];
-         var annotation = entityIDs.length === 1 ? _t('operations.rotate.annotation.' + context.graph().geometry(entityIDs[0])) : _t('operations.rotate.annotation.feature', {
-           n: entityIDs.length
-         });
+           if (startWithRecents) {
+             recents = _this.recent().matchGeometry(geometry).collection.slice(0, 4);
+           }

 
 

-         var _prevGraph;
+           var defaults;

 
 

-         var _prevAngle;
+           if (_addablePresetIDs) {
+             defaults = Array.from(_addablePresetIDs).map(function (id) {
+               var preset = _this.item(id);

 
 

-         var _prevTransform;
+               if (preset && preset.matchGeometry(geometry)) return preset;
+               return null;
+             }).filter(Boolean);
+           } else {
+             defaults = _defaults[geometry].collection.concat(_this.fallback(geometry));
+           }

 
 

-         var _pivot;
+           var result = presetCollection(utilArrayUniq(recents.concat(defaults)).slice(0, n - 1));

 
 

-         function doRotate() {
-           var fn;
+           if (Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);
+             result.collection = result.collection.filter(function (a) {
+               return !a.locationSetID || validLocations[a.locationSetID];
+             });
+           }

 
 

-           if (context.graph() !== _prevGraph) {
-             fn = context.perform;
-           } else {
-             fn = context.replace;
-           } // projection changed, recalculate _pivot
+           return result;
+         }; // pass a Set of addable preset ids

 
 
 
 

-           var projection = context.projection;
-           var currTransform = projection.transform();
+         _this.addablePresetIDs = function (val) {
+           if (!arguments.length) return _addablePresetIDs; // accept and convert arrays

 
 

-           if (!_prevTransform || currTransform.k !== _prevTransform.k || currTransform.x !== _prevTransform.x || currTransform.y !== _prevTransform.y) {
-             var nodes = utilGetAllNodes(entityIDs, context.graph());
-             var points = nodes.map(function (n) {
-               return projection(n.loc);
+           if (Array.isArray(val)) val = new Set(val);
+           _addablePresetIDs = val;
+
+           if (_addablePresetIDs) {
+             // reset all presets
+             _this.collection.forEach(function (p) {
+               // categories aren't addable
+               if (p.addable) p.addable(_addablePresetIDs.has(p.id));
+             });
+           } else {
+             _this.collection.forEach(function (p) {
+               if (p.addable) p.addable(true);

              });
              });

-             _pivot = getPivot(points);
-             _prevAngle = undefined;

            }
 
            }
 

-           var currMouse = context.map().mouse();
-           var currAngle = Math.atan2(currMouse[1] - _pivot[1], currMouse[0] - _pivot[0]);
-           if (typeof _prevAngle === 'undefined') _prevAngle = currAngle;
-           var delta = currAngle - _prevAngle;
-           fn(actionRotate(entityIDs, _pivot, delta, projection));
-           _prevTransform = currTransform;
-           _prevAngle = currAngle;
-           _prevGraph = context.graph();
-         }
+           return _this;
+         };

 
 

-         function getPivot(points) {
-           var _pivot;
+         _this.recent = function () {
+           return presetCollection(utilArrayUniq(_this.getRecents().map(function (d) {
+             return d.preset;
+           })));
+         };

 
 

-           if (points.length === 1) {
-             _pivot = points[0];
-           } else if (points.length === 2) {
-             _pivot = geoVecInterp(points[0], points[1], 0.5);
-           } else {
-             var polygonHull = d3_polygonHull(points);
+         function RibbonItem(preset, source) {
+           var item = {};
+           item.preset = preset;
+           item.source = source;

 
 

-             if (polygonHull.length === 2) {
-               _pivot = geoVecInterp(points[0], points[1], 0.5);
-             } else {
-               _pivot = d3_polygonCentroid(d3_polygonHull(points));
-             }
-           }
+           item.isFavorite = function () {
+             return item.source === 'favorite';
+           };

 
 

-           return _pivot;
-         }
+           item.isRecent = function () {
+             return item.source === 'recent';
+           };

 
 

-         function finish(d3_event) {
-           d3_event.stopPropagation();
-           context.replace(actionNoop(), annotation);
-           context.enter(modeSelect(context, entityIDs));
-         }
+           item.matches = function (preset) {
+             return item.preset.id === preset.id;
+           };

 
 

-         function cancel() {
-           context.pop();
-           context.enter(modeSelect(context, entityIDs));
-         }
+           item.minified = function () {
+             return {
+               pID: item.preset.id
+             };
+           };

 
 

-         function undone() {
-           context.enter(modeBrowse(context));
+           return item;

          }
 
          }
 

-         mode.enter = function () {
-           context.features().forceVisible(entityIDs);
-           behaviors.forEach(context.install);
-           context.surface().on('mousemove.rotate', doRotate).on('click.rotate', finish);
-           context.history().on('undone.rotate', undone);
-           keybinding.on('⎋', cancel).on('↩', finish);
-           select(document).call(keybinding);
-         };
+         function ribbonItemForMinified(d, source) {
+           if (d && d.pID) {
+             var preset = _this.item(d.pID);

 
 

-         mode.exit = function () {
-           behaviors.forEach(context.uninstall);
-           context.surface().on('mousemove.rotate', null).on('click.rotate', null);
-           context.history().on('undone.rotate', null);
-           select(document).call(keybinding.unbind);
-           context.features().forceVisible([]);
+             if (!preset) return null;
+             return RibbonItem(preset, source);
+           }
+
+           return null;
+         }
+
+         _this.getGenericRibbonItems = function () {
+           return ['point', 'line', 'area'].map(function (id) {
+             return RibbonItem(_this.item(id), 'generic');
+           });

          };
 
          };
 

-         mode.selectedIDs = function () {
-           if (!arguments.length) return entityIDs; // no assign
+         _this.getAddable = function () {
+           if (!_addablePresetIDs) return [];
+           return _addablePresetIDs.map(function (id) {
+             var preset = _this.item(id);

 
 

-           return mode;
+             if (preset) return RibbonItem(preset, 'addable');
+             return null;
+           }).filter(Boolean);

          };
 
          };
 

-         return mode;
-       }
+         function setRecents(items) {
+           _recents = items;
+           var minifiedItems = items.map(function (d) {
+             return d.minified();
+           });
+           corePreferences('preset_recents', JSON.stringify(minifiedItems));
+           dispatch.call('recentsChange');
+         }

 
 

-       function operationRotate(context, selectedIDs) {
-         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
-         var nodes = utilGetAllNodes(selectedIDs, context.graph());
-         var coords = nodes.map(function (n) {
-           return n.loc;
-         });
-         var extent = utilTotalExtent(selectedIDs, context.graph());
+         _this.getRecents = function () {
+           if (!_recents) {
+             // fetch from local storage
+             _recents = (JSON.parse(corePreferences('preset_recents')) || []).reduce(function (acc, d) {
+               var item = ribbonItemForMinified(d, 'recent');
+               if (item && item.preset.addable()) acc.push(item);
+               return acc;
+             }, []);
+           }

 
 

-         var operation = function operation() {
-           context.enter(modeRotate(context, selectedIDs));
+           return _recents;

          };
 
          };
 

-         operation.available = function () {
-           return nodes.length >= 2;
+         _this.addRecent = function (preset, besidePreset, after) {
+           var recents = _this.getRecents();
+
+           var beforeItem = _this.recentMatching(besidePreset);
+
+           var toIndex = recents.indexOf(beforeItem);
+           if (after) toIndex += 1;
+           var newItem = RibbonItem(preset, 'recent');
+           recents.splice(toIndex, 0, newItem);
+           setRecents(recents);

          };
 
          };
 

-         operation.disabled = function () {
-           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           } else if (selectedIDs.some(incompleteRelation)) {
-             return 'incomplete_relation';
-           }
+         _this.removeRecent = function (preset) {
+           var item = _this.recentMatching(preset);

 
 

-           return false;
+           if (item) {
+             var items = _this.getRecents();

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+             items.splice(items.indexOf(item), 1);
+             setRecents(items);
+           }
+         };

 
 

-             if (osm) {
-               var missing = coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+         _this.recentMatching = function (preset) {
+           var items = _this.getRecents();

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
-               }
+           for (var i in items) {
+             if (items[i].matches(preset)) {
+               return items[i];

              }
              }

-
-             return false;

            }
 
            }
 

-           function incompleteRelation(id) {
-             var entity = context.entity(id);
-             return entity.type === 'relation' && !entity.isComplete(context.graph());
-           }
+           return null;

          };
 
          };
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.rotate.' + disable + '.' + multi) : _t('operations.rotate.description.' + multi);
+         _this.moveItem = function (items, fromIndex, toIndex) {
+           if (fromIndex === toIndex || fromIndex < 0 || toIndex < 0 || fromIndex >= items.length || toIndex >= items.length) return null;
+           items.splice(toIndex, 0, items.splice(fromIndex, 1)[0]);
+           return items;

          };
 
          };
 

-         operation.annotation = function () {
-           return selectedIDs.length === 1 ? _t('operations.rotate.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.rotate.annotation.feature', {
-             n: selectedIDs.length
-           });
-         };
+         _this.moveRecent = function (item, beforeItem) {
+           var recents = _this.getRecents();

 
 

-         operation.id = 'rotate';
-         operation.keys = [_t('operations.rotate.key')];
-         operation.title = _t('operations.rotate.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         operation.mouseOnly = true;
-         return operation;
-       }
+           var fromIndex = recents.indexOf(item);
+           var toIndex = recents.indexOf(beforeItem);

 
 

-       function modeMove(context, entityIDs, baseGraph) {
-         var mode = {
-           id: 'move',
-           button: 'browse'
+           var items = _this.moveItem(recents, fromIndex, toIndex);
+
+           if (items) setRecents(items);

          };
          };

-         var keybinding = utilKeybinding('move');
-         var behaviors = [behaviorEdit(context), operationCircularize(context, entityIDs).behavior, operationDelete(context, entityIDs).behavior, operationOrthogonalize(context, entityIDs).behavior, operationReflectLong(context, entityIDs).behavior, operationReflectShort(context, entityIDs).behavior, operationRotate(context, entityIDs).behavior];
-         var annotation = entityIDs.length === 1 ? _t('operations.move.annotation.' + context.graph().geometry(entityIDs[0])) : _t('operations.move.annotation.feature', {
-           n: entityIDs.length
-         });

 
 

-         var _prevGraph;
+         _this.setMostRecent = function (preset) {
+           if (preset.searchable === false) return;

 
 

-         var _cache;
+           var items = _this.getRecents();

 
 

-         var _origin;
+           var item = _this.recentMatching(preset);

 
 

-         var _nudgeInterval;
+           if (item) {
+             items.splice(items.indexOf(item), 1);
+           } else {
+             item = RibbonItem(preset, 'recent');
+           } // remove the last recent (first in, first out)

 
 

-         function doMove(nudge) {
-           nudge = nudge || [0, 0];
-           var fn;

 
 

-           if (_prevGraph !== context.graph()) {
-             _cache = {};
-             _origin = context.map().mouseCoordinates();
-             fn = context.perform;
-           } else {
-             fn = context.overwrite;
-           }
+           while (items.length >= MAXRECENTS) {
+             items.pop();
+           } // prepend array

 
 

-           var currMouse = context.map().mouse();
-           var origMouse = context.projection(_origin);
-           var delta = geoVecSubtract(geoVecSubtract(currMouse, origMouse), nudge);
-           fn(actionMove(entityIDs, delta, context.projection, _cache));
-           _prevGraph = context.graph();
-         }

 
 

-         function startNudge(nudge) {
-           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
-           _nudgeInterval = window.setInterval(function () {
-             context.map().pan(nudge);
-             doMove(nudge);
-           }, 50);
-         }
+           items.unshift(item);
+           setRecents(items);
+         };

 
 

-         function stopNudge() {
-           if (_nudgeInterval) {
-             window.clearInterval(_nudgeInterval);
-             _nudgeInterval = null;
-           }
+         function setFavorites(items) {
+           _favorites = items;
+           var minifiedItems = items.map(function (d) {
+             return d.minified();
+           });
+           corePreferences('preset_favorites', JSON.stringify(minifiedItems)); // call update
+
+           dispatch.call('favoritePreset');

          }
 
          }
 

-         function move() {
-           doMove();
-           var nudge = geoViewportEdge(context.map().mouse(), context.map().dimensions());
+         _this.addFavorite = function (preset, besidePreset, after) {
+           var favorites = _this.getFavorites();

 
 

-           if (nudge) {
-             startNudge(nudge);
-           } else {
-             stopNudge();
-           }
-         }
+           var beforeItem = _this.favoriteMatching(besidePreset);

 
 

-         function finish(d3_event) {
-           d3_event.stopPropagation();
-           context.replace(actionNoop(), annotation);
-           context.enter(modeSelect(context, entityIDs));
-           stopNudge();
-         }
+           var toIndex = favorites.indexOf(beforeItem);
+           if (after) toIndex += 1;
+           var newItem = RibbonItem(preset, 'favorite');
+           favorites.splice(toIndex, 0, newItem);
+           setFavorites(favorites);
+         };

 
 

-         function cancel() {
-           if (baseGraph) {
-             while (context.graph() !== baseGraph) {
-               context.pop();
-             }
+         _this.toggleFavorite = function (preset) {
+           var favs = _this.getFavorites();

 
 

-             context.enter(modeBrowse(context));
+           var favorite = _this.favoriteMatching(preset);
+
+           if (favorite) {
+             favs.splice(favs.indexOf(favorite), 1);

            } else {
            } else {

-             context.pop();
-             context.enter(modeSelect(context, entityIDs));
-           }
+             // only allow 10 favorites
+             if (favs.length === 10) {
+               // remove the last favorite (last in, first out)
+               favs.pop();
+             } // append array

 
 

-           stopNudge();
-         }

 
 

-         function undone() {
-           context.enter(modeBrowse(context));
-         }
+             favs.push(RibbonItem(preset, 'favorite'));
+           }

 
 

-         mode.enter = function () {
-           _origin = context.map().mouseCoordinates();
-           _prevGraph = null;
-           _cache = {};
-           context.features().forceVisible(entityIDs);
-           behaviors.forEach(context.install);
-           context.surface().on('mousemove.move', move).on('click.move', finish);
-           context.history().on('undone.move', undone);
-           keybinding.on('⎋', cancel).on('↩', finish);
-           select(document).call(keybinding);
+           setFavorites(favs);

          };
 
          };
 

-         mode.exit = function () {
-           stopNudge();
-           behaviors.forEach(function (behavior) {
-             context.uninstall(behavior);
-           });
-           context.surface().on('mousemove.move', null).on('click.move', null);
-           context.history().on('undone.move', null);
-           select(document).call(keybinding.unbind);
-           context.features().forceVisible([]);
-         };
+         _this.removeFavorite = function (preset) {
+           var item = _this.favoriteMatching(preset);

 
 

-         mode.selectedIDs = function () {
-           if (!arguments.length) return entityIDs; // no assign
+           if (item) {
+             var items = _this.getFavorites();

 
 

-           return mode;
+             items.splice(items.indexOf(item), 1);
+             setFavorites(items);
+           }

          };
 
          };
 

-         return mode;
-       }
-
-       function behaviorPaste(context) {
-         function doPaste(d3_event) {
-           // prevent paste during low zoom selection
-           if (!context.map().withinEditableZoom()) return;
-           d3_event.preventDefault();
-           var baseGraph = context.graph();
-           var mouse = context.map().mouse();
-           var projection = context.projection;
-           var viewport = geoExtent(projection.clipExtent()).polygon();
-           if (!geoPointInPolygon(mouse, viewport)) return;
-           var oldIDs = context.copyIDs();
-           if (!oldIDs.length) return;
-           var extent = geoExtent();
-           var oldGraph = context.copyGraph();
-           var newIDs = [];
-           var action = actionCopyEntities(oldIDs, oldGraph);
-           context.perform(action);
-           var copies = action.copies();
-           var originals = new Set();
-           Object.values(copies).forEach(function (entity) {
-             originals.add(entity.id);
-           });
+         _this.getFavorites = function () {
+           if (!_favorites) {
+             // fetch from local storage
+             var rawFavorites = JSON.parse(corePreferences('preset_favorites'));

 
 

-           for (var id in copies) {
-             var oldEntity = oldGraph.entity(id);
-             var newEntity = copies[id];
+             if (!rawFavorites) {
+               rawFavorites = [];
+               corePreferences('preset_favorites', JSON.stringify(rawFavorites));
+             }

 
 

-             extent._extend(oldEntity.extent(oldGraph)); // Exclude child nodes from newIDs if their parent way was also copied.
+             _favorites = rawFavorites.reduce(function (output, d) {
+               var item = ribbonItemForMinified(d, 'favorite');
+               if (item && item.preset.addable()) output.push(item);
+               return output;
+             }, []);
+           }

 
 

+           return _favorites;
+         };

 
 

-             var parents = context.graph().parentWays(newEntity);
-             var parentCopied = parents.some(function (parent) {
-               return originals.has(parent.id);
-             });
+         _this.favoriteMatching = function (preset) {
+           var favs = _this.getFavorites();

 
 

-             if (!parentCopied) {
-               newIDs.push(newEntity.id);
+           for (var index in favs) {
+             if (favs[index].matches(preset)) {
+               return favs[index];

              }
              }

-           } // Put pasted objects where mouse pointer is..
-
-
-           var copyPoint = context.copyLonLat() && projection(context.copyLonLat()) || projection(extent.center());
-           var delta = geoVecSubtract(mouse, copyPoint);
-           context.perform(actionMove(newIDs, delta, projection));
-           context.enter(modeMove(context, newIDs, baseGraph));
-         }
-
-         function behavior() {
-           context.keybinding().on(uiCmd('⌘V'), doPaste);
-           return behavior;
-         }
+           }

 
 

-         behavior.off = function () {
-           context.keybinding().off(uiCmd('⌘V'));
+           return null;

          };
 
          };
 

-         return behavior;
+         return utilRebind(_this, dispatch, 'on');

        }
 
        }
 

-       // `String.prototype.repeat` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.repeat
-       _export({ target: 'String', proto: true }, {
-         repeat: stringRepeat
-       });
+       function utilTagText(entity) {
+         var obj = entity && entity.tags || {};
+         return Object.keys(obj).map(function (k) {
+           return k + '=' + obj[k];
+         }).join(', ');
+       }
+       function utilTotalExtent(array, graph) {
+         var extent = geoExtent();
+         var val, entity;

 
 

-       /*
-           `behaviorDrag` is like `d3_behavior.drag`, with the following differences:
+         for (var i = 0; i < array.length; i++) {
+           val = array[i];
+           entity = typeof val === 'string' ? graph.hasEntity(val) : val;

 
 

-           * The `origin` function is expected to return an [x, y] tuple rather than an
-             {x, y} object.
-           * The events are `start`, `move`, and `end`.
-             (https://github.com/mbostock/d3/issues/563)
-           * The `start` event is not dispatched until the first cursor movement occurs.
-             (https://github.com/mbostock/d3/pull/368)
-           * The `move` event has a `point` and `delta` [x, y] tuple properties rather
-             than `x`, `y`, `dx`, and `dy` properties.
-           * The `end` event is not dispatched if no movement occurs.
-           * An `off` function is available that unbinds the drag's internal event handlers.
-        */
+           if (entity) {
+             extent._extend(entity.extent(graph));
+           }
+         }

 
 

-       function behaviorDrag() {
-         var dispatch$1 = dispatch('start', 'move', 'end'); // see also behaviorSelect
+         return extent;
+       }
+       function utilTagDiff(oldTags, newTags) {
+         var tagDiff = [];
+         var keys = utilArrayUnion(Object.keys(oldTags), Object.keys(newTags)).sort();
+         keys.forEach(function (k) {
+           var oldVal = oldTags[k];
+           var newVal = newTags[k];

 
 

-         var _tolerancePx = 1; // keep this low to facilitate pixel-perfect micromapping
+           if ((oldVal || oldVal === '') && (newVal === undefined || newVal !== oldVal)) {
+             tagDiff.push({
+               type: '-',
+               key: k,
+               oldVal: oldVal,
+               newVal: newVal,
+               display: '- ' + k + '=' + oldVal
+             });
+           }

 
 

-         var _penTolerancePx = 4; // styluses can be touchy so require greater movement - #1981
+           if ((newVal || newVal === '') && (oldVal === undefined || newVal !== oldVal)) {
+             tagDiff.push({
+               type: '+',
+               key: k,
+               oldVal: oldVal,
+               newVal: newVal,
+               display: '+ ' + k + '=' + newVal
+             });
+           }
+         });
+         return tagDiff;
+       }
+       function utilEntitySelector(ids) {
+         return ids.length ? '.' + ids.join(',.') : 'nothing';
+       } // returns an selector to select entity ids for:
+       //  - entityIDs passed in
+       //  - shallow descendant entityIDs for any of those entities that are relations

 
 

-         var _origin = null;
-         var _selector = '';
+       function utilEntityOrMemberSelector(ids, graph) {
+         var seen = new Set(ids);
+         ids.forEach(collectShallowDescendants);
+         return utilEntitySelector(Array.from(seen));

 
 

-         var _targetNode;
+         function collectShallowDescendants(id) {
+           var entity = graph.hasEntity(id);
+           if (!entity || entity.type !== 'relation') return;
+           entity.members.map(function (member) {
+             return member.id;
+           }).forEach(function (id) {
+             seen.add(id);
+           });
+         }
+       } // returns an selector to select entity ids for:
+       //  - entityIDs passed in
+       //  - deep descendant entityIDs for any of those entities that are relations
+
+       function utilEntityOrDeepMemberSelector(ids, graph) {
+         return utilEntitySelector(utilEntityAndDeepMemberIDs(ids, graph));
+       } // returns an selector to select entity ids for:
+       //  - entityIDs passed in
+       //  - deep descendant entityIDs for any of those entities that are relations

 
 

-         var _targetEntity;
+       function utilEntityAndDeepMemberIDs(ids, graph) {
+         var seen = new Set();
+         ids.forEach(collectDeepDescendants);
+         return Array.from(seen);

 
 

-         var _surface;
+         function collectDeepDescendants(id) {
+           if (seen.has(id)) return;
+           seen.add(id);
+           var entity = graph.hasEntity(id);
+           if (!entity || entity.type !== 'relation') return;
+           entity.members.map(function (member) {
+             return member.id;
+           }).forEach(collectDeepDescendants); // recurse
+         }
+       } // returns an selector to select entity ids for:
+       //  - deep descendant entityIDs for any of those entities that are relations

 
 

-         var _pointerId; // use pointer events on supported platforms; fallback to mouse events
+       function utilDeepMemberSelector(ids, graph, skipMultipolgonMembers) {
+         var idsSet = new Set(ids);
+         var seen = new Set();
+         var returners = new Set();
+         ids.forEach(collectDeepDescendants);
+         return utilEntitySelector(Array.from(returners));

 
 

+         function collectDeepDescendants(id) {
+           if (seen.has(id)) return;
+           seen.add(id);

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+           if (!idsSet.has(id)) {
+             returners.add(id);
+           }

 
 

-         var d3_event_userSelectProperty = utilPrefixCSSProperty('UserSelect');
+           var entity = graph.hasEntity(id);
+           if (!entity || entity.type !== 'relation') return;
+           if (skipMultipolgonMembers && entity.isMultipolygon()) return;
+           entity.members.map(function (member) {
+             return member.id;
+           }).forEach(collectDeepDescendants); // recurse
+         }
+       } // Adds or removes highlight styling for the specified entities

 
 

-         var d3_event_userSelectSuppress = function d3_event_userSelectSuppress() {
-           var selection$1 = selection();
-           var select = selection$1.style(d3_event_userSelectProperty);
-           selection$1.style(d3_event_userSelectProperty, 'none');
-           return function () {
-             selection$1.style(d3_event_userSelectProperty, select);
-           };
-         };
+       function utilHighlightEntities(ids, highlighted, context) {
+         context.surface().selectAll(utilEntityOrDeepMemberSelector(ids, context.graph())).classed('highlighted', highlighted);
+       } // returns an Array that is the union of:
+       //  - nodes for any nodeIDs passed in
+       //  - child nodes of any wayIDs passed in
+       //  - descendant member and child nodes of relationIDs passed in

 
 

-         function pointerdown(d3_event) {
-           if (_pointerId) return;
-           _pointerId = d3_event.pointerId || 'mouse';
-           _targetNode = this; // only force reflow once per drag
+       function utilGetAllNodes(ids, graph) {
+         var seen = new Set();
+         var nodes = new Set();
+         ids.forEach(collectNodes);
+         return Array.from(nodes);

 
 

-           var pointerLocGetter = utilFastMouse(_surface || _targetNode.parentNode);
-           var offset;
-           var startOrigin = pointerLocGetter(d3_event);
-           var started = false;
-           var selectEnable = d3_event_userSelectSuppress();
-           select(window).on(_pointerPrefix + 'move.drag', pointermove).on(_pointerPrefix + 'up.drag pointercancel.drag', pointerup, true);
+         function collectNodes(id) {
+           if (seen.has(id)) return;
+           seen.add(id);
+           var entity = graph.hasEntity(id);
+           if (!entity) return;

 
 

-           if (_origin) {
-             offset = _origin.call(_targetNode, _targetEntity);
-             offset = [offset[0] - startOrigin[0], offset[1] - startOrigin[1]];
+           if (entity.type === 'node') {
+             nodes.add(entity);
+           } else if (entity.type === 'way') {
+             entity.nodes.forEach(collectNodes);

            } else {
            } else {

-             offset = [0, 0];
+             entity.members.map(function (member) {
+               return member.id;
+             }).forEach(collectNodes); // recurse

            }
            }

+         }
+       }
+       function utilDisplayName(entity) {
+         var localizedNameKey = 'name:' + _mainLocalizer.languageCode().toLowerCase();
+         var name = entity.tags[localizedNameKey] || entity.tags.name || '';
+         if (name) return name;
+         var tags = {
+           direction: entity.tags.direction,
+           from: entity.tags.from,
+           network: entity.tags.cycle_network || entity.tags.network,
+           ref: entity.tags.ref,
+           to: entity.tags.to,
+           via: entity.tags.via
+         };
+         var keyComponents = [];

 
 

-           d3_event.stopPropagation();
-
-           function pointermove(d3_event) {
-             if (_pointerId !== (d3_event.pointerId || 'mouse')) return;
-             var p = pointerLocGetter(d3_event);
+         if (tags.network) {
+           keyComponents.push('network');
+         }

 
 

-             if (!started) {
-               var dist = geoVecLength(startOrigin, p);
-               var tolerance = d3_event.pointerType === 'pen' ? _penTolerancePx : _tolerancePx; // don't start until the drag has actually moved somewhat
+         if (tags.ref) {
+           keyComponents.push('ref');
+         } // Routes may need more disambiguation based on direction or destination

 
 

-               if (dist < tolerance) return;
-               started = true;
-               dispatch$1.call('start', this, d3_event, _targetEntity); // Don't send a `move` event in the same cycle as `start` since dragging
-               // a midpoint will convert the target to a node.
-             } else {
-               startOrigin = p;
-               d3_event.stopPropagation();
-               d3_event.preventDefault();
-               var dx = p[0] - startOrigin[0];
-               var dy = p[1] - startOrigin[1];
-               dispatch$1.call('move', this, d3_event, _targetEntity, [p[0] + offset[0], p[1] + offset[1]], [dx, dy]);
-             }
-           }

 
 

-           function pointerup(d3_event) {
-             if (_pointerId !== (d3_event.pointerId || 'mouse')) return;
-             _pointerId = null;
+         if (entity.tags.route) {
+           if (tags.direction) {
+             keyComponents.push('direction');
+           } else if (tags.from && tags.to) {
+             keyComponents.push('from');
+             keyComponents.push('to');

 
 

-             if (started) {
-               dispatch$1.call('end', this, d3_event, _targetEntity);
-               d3_event.preventDefault();
+             if (tags.via) {
+               keyComponents.push('via');

              }
              }

-
-             select(window).on(_pointerPrefix + 'move.drag', null).on(_pointerPrefix + 'up.drag pointercancel.drag', null);
-             selectEnable();

            }
          }
 
            }
          }
 

-         function behavior(selection) {
-           var matchesSelector = utilPrefixDOMProperty('matchesSelector');
-           var delegate = pointerdown;
-
-           if (_selector) {
-             delegate = function delegate(d3_event) {
-               var root = this;
-               var target = d3_event.target;
-
-               for (; target && target !== root; target = target.parentNode) {
-                 var datum = target.__data__;
-                 _targetEntity = datum instanceof osmNote ? datum : datum && datum.properties && datum.properties.entity;
+         if (keyComponents.length) {
+           name = _t('inspector.display_name.' + keyComponents.join('_'), tags);
+         }

 
 

-                 if (_targetEntity && target[matchesSelector](_selector)) {
-                   return pointerdown.call(target, d3_event);
-                 }
-               }
-             };
-           }
+         return name;
+       }
+       function utilDisplayNameForPath(entity) {
+         var name = utilDisplayName(entity);
+         var isFirefox = utilDetect().browser.toLowerCase().indexOf('firefox') > -1;
+         var isNewChromium = Number(utilDetect().version.split('.')[0]) >= 96.0;

 
 

-           selection.on(_pointerPrefix + 'down.drag' + _selector, delegate);
+         if (!isFirefox && !isNewChromium && name && rtlRegex.test(name)) {
+           name = fixRTLTextForSvg(name);

          }
 
          }
 

-         behavior.off = function (selection) {
-           selection.on(_pointerPrefix + 'down.drag' + _selector, null);
-         };
+         return name;
+       }
+       function utilDisplayType(id) {
+         return {
+           n: _t('inspector.node'),
+           w: _t('inspector.way'),
+           r: _t('inspector.relation')
+         }[id.charAt(0)];
+       } // `utilDisplayLabel`
+       // Returns a string suitable for display
+       // By default returns something like name/ref, fallback to preset type, fallback to OSM type
+       //   "Main Street" or "Tertiary Road"
+       // If `verbose=true`, include both preset name and feature name.
+       //   "Tertiary Road Main Street"
+       //

 
 

-         behavior.selector = function (_) {
-           if (!arguments.length) return _selector;
-           _selector = _;
-           return behavior;
-         };
+       function utilDisplayLabel(entity, graphOrGeometry, verbose) {
+         var result;
+         var displayName = utilDisplayName(entity);
+         var preset = typeof graphOrGeometry === 'string' ? _mainPresetIndex.matchTags(entity.tags, graphOrGeometry) : _mainPresetIndex.match(entity, graphOrGeometry);
+         var presetName = preset && (preset.suggestion ? preset.subtitle() : preset.name());

 
 

-         behavior.origin = function (_) {
-           if (!arguments.length) return _origin;
-           _origin = _;
-           return behavior;
-         };
+         if (verbose) {
+           result = [presetName, displayName].filter(Boolean).join(' ');
+         } else {
+           result = displayName || presetName;
+         } // Fallback to the OSM type (node/way/relation)

 
 

-         behavior.cancel = function () {
-           select(window).on(_pointerPrefix + 'move.drag', null).on(_pointerPrefix + 'up.drag pointercancel.drag', null);
-           return behavior;
-         };

 
 

-         behavior.targetNode = function (_) {
-           if (!arguments.length) return _targetNode;
-           _targetNode = _;
-           return behavior;
-         };
+         return result || utilDisplayType(entity.id);
+       }
+       function utilEntityRoot(entityType) {
+         return {
+           node: 'n',
+           way: 'w',
+           relation: 'r'
+         }[entityType];
+       } // Returns a single object containing the tags of all the given entities.
+       // Example:
+       // {
+       //   highway: 'service',
+       //   service: 'parking_aisle'
+       // }
+       //           +
+       // {
+       //   highway: 'service',
+       //   service: 'driveway',
+       //   width: '3'
+       // }
+       //           =
+       // {
+       //   highway: 'service',
+       //   service: [ 'driveway', 'parking_aisle' ],
+       //   width: [ '3', undefined ]
+       // }

 
 

-         behavior.targetEntity = function (_) {
-           if (!arguments.length) return _targetEntity;
-           _targetEntity = _;
-           return behavior;
-         };
+       function utilCombinedTags(entityIDs, graph) {
+         var tags = {};
+         var tagCounts = {};
+         var allKeys = new Set();
+         var entities = entityIDs.map(function (entityID) {
+           return graph.hasEntity(entityID);
+         }).filter(Boolean); // gather the aggregate keys

 
 

-         behavior.surface = function (_) {
-           if (!arguments.length) return _surface;
-           _surface = _;
-           return behavior;
-         };
+         entities.forEach(function (entity) {
+           var keys = Object.keys(entity.tags).filter(Boolean);
+           keys.forEach(function (key) {
+             allKeys.add(key);
+           });
+         });
+         entities.forEach(function (entity) {
+           allKeys.forEach(function (key) {
+             var value = entity.tags[key]; // purposely allow `undefined`

 
 

-         return utilRebind(behavior, dispatch$1, 'on');
-       }
+             if (!tags.hasOwnProperty(key)) {
+               // first value, set as raw
+               tags[key] = value;
+             } else {
+               if (!Array.isArray(tags[key])) {
+                 if (tags[key] !== value) {
+                   // first alternate value, replace single value with array
+                   tags[key] = [tags[key], value];
+                 }
+               } else {
+                 // type is array
+                 if (tags[key].indexOf(value) === -1) {
+                   // subsequent alternate value, add to array
+                   tags[key].push(value);
+                 }
+               }
+             }

 
 

-       function modeDragNode(context) {
-         var mode = {
-           id: 'drag-node',
-           button: 'browse'
-         };
-         var hover = behaviorHover(context).altDisables(true).on('hover', context.ui().sidebar.hover);
-         var edit = behaviorEdit(context);
+             var tagHash = key + '=' + value;
+             if (!tagCounts[tagHash]) tagCounts[tagHash] = 0;
+             tagCounts[tagHash] += 1;
+           });
+         });

 
 

-         var _nudgeInterval;
+         for (var key in tags) {
+           if (!Array.isArray(tags[key])) continue; // sort values by frequency then alphabetically

 
 

-         var _restoreSelectedIDs = [];
-         var _wasMidpoint = false;
-         var _isCancelled = false;
+           tags[key] = tags[key].sort(function (val1, val2) {
+             var key = key; // capture

 
 

-         var _activeEntity;
+             var count2 = tagCounts[key + '=' + val2];
+             var count1 = tagCounts[key + '=' + val1];

 
 

-         var _startLoc;
+             if (count2 !== count1) {
+               return count2 - count1;
+             }

 
 

-         var _lastLoc;
+             if (val2 && val1) {
+               return val1.localeCompare(val2);
+             }

 
 

-         function startNudge(d3_event, entity, nudge) {
-           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
-           _nudgeInterval = window.setInterval(function () {
-             context.map().pan(nudge);
-             doMove(d3_event, entity, nudge);
-           }, 50);
+             return val1 ? 1 : -1;
+           });

          }
 
          }
 

-         function stopNudge() {
-           if (_nudgeInterval) {
-             window.clearInterval(_nudgeInterval);
-             _nudgeInterval = null;
-           }
-         }
+         return tags;
+       }
+       function utilStringQs(str) {
+         var i = 0; // advance past any leading '?' or '#' characters

 
 

-         function moveAnnotation(entity) {
-           return _t('operations.move.annotation.' + entity.geometry(context.graph()));
+         while (i < str.length && (str[i] === '?' || str[i] === '#')) {
+           i++;

          }
 
          }
 

-         function connectAnnotation(nodeEntity, targetEntity) {
-           var nodeGeometry = nodeEntity.geometry(context.graph());
-           var targetGeometry = targetEntity.geometry(context.graph());
-
-           if (nodeGeometry === 'vertex' && targetGeometry === 'vertex') {
-             var nodeParentWayIDs = context.graph().parentWays(nodeEntity);
-             var targetParentWayIDs = context.graph().parentWays(targetEntity);
-             var sharedParentWays = utilArrayIntersection(nodeParentWayIDs, targetParentWayIDs); // if both vertices are part of the same way
-
-             if (sharedParentWays.length !== 0) {
-               // if the nodes are next to each other, they are merged
-               if (sharedParentWays[0].areAdjacent(nodeEntity.id, targetEntity.id)) {
-                 return _t('operations.connect.annotation.from_vertex.to_adjacent_vertex');
-               }
+         str = str.slice(i);
+         return str.split('&').reduce(function (obj, pair) {
+           var parts = pair.split('=');

 
 

-               return _t('operations.connect.annotation.from_vertex.to_sibling_vertex');
-             }
+           if (parts.length === 2) {
+             obj[parts[0]] = null === parts[1] ? '' : decodeURIComponent(parts[1]);

            }
 
            }
 

-           return _t('operations.connect.annotation.from_' + nodeGeometry + '.to_' + targetGeometry);
+           return obj;
+         }, {});
+       }
+       function utilQsString(obj, noencode) {
+         // encode everything except special characters used in certain hash parameters:
+         // "/" in map states, ":", ",", {" and "}" in background
+         function softEncode(s) {
+           return encodeURIComponent(s).replace(/(%2F|%3A|%2C|%7B|%7D)/g, decodeURIComponent);

          }
 
          }
 

-         function shouldSnapToNode(target) {
-           if (!_activeEntity) return false;
-           return _activeEntity.geometry(context.graph()) !== 'vertex' || target.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(target, context.graph());
-         }
+         return Object.keys(obj).sort().map(function (key) {
+           return encodeURIComponent(key) + '=' + (noencode ? softEncode(obj[key]) : encodeURIComponent(obj[key]));
+         }).join('&');
+       }
+       function utilPrefixDOMProperty(property) {
+         var prefixes = ['webkit', 'ms', 'moz', 'o'];
+         var i = -1;
+         var n = prefixes.length;
+         var s = document.body;
+         if (property in s) return property;
+         property = property.substr(0, 1).toUpperCase() + property.substr(1);

 
 

-         function origin(entity) {
-           return context.projection(entity.loc);
+         while (++i < n) {
+           if (prefixes[i] + property in s) {
+             return prefixes[i] + property;
+           }

          }
 
          }
 

-         function keydown(d3_event) {
-           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             if (context.surface().classed('nope')) {
-               context.surface().classed('nope-suppressed', true);
-             }
+         return false;
+       }
+       function utilPrefixCSSProperty(property) {
+         var prefixes = ['webkit', 'ms', 'Moz', 'O'];
+         var i = -1;
+         var n = prefixes.length;
+         var s = document.body.style;

 
 

-             context.surface().classed('nope', false).classed('nope-disabled', true);
-           }
+         if (property.toLowerCase() in s) {
+           return property.toLowerCase();

          }
 
          }
 

-         function keyup(d3_event) {
-           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             if (context.surface().classed('nope-suppressed')) {
-               context.surface().classed('nope', true);
-             }
-
-             context.surface().classed('nope-suppressed', false).classed('nope-disabled', false);
+         while (++i < n) {
+           if (prefixes[i] + property in s) {
+             return '-' + prefixes[i].toLowerCase() + property.replace(/([A-Z])/g, '-$1').toLowerCase();

            }
          }
 
            }
          }
 

-         function start(d3_event, entity) {
-           _wasMidpoint = entity.type === 'midpoint';
-           var hasHidden = context.features().hasHiddenConnections(entity, context.graph());
-           _isCancelled = !context.editable() || d3_event.shiftKey || hasHidden;
+         return false;
+       }
+       var transformProperty;
+       function utilSetTransform(el, x, y, scale) {
+         var prop = transformProperty = transformProperty || utilPrefixCSSProperty('Transform');
+         var translate = utilDetect().opera ? 'translate(' + x + 'px,' + y + 'px)' : 'translate3d(' + x + 'px,' + y + 'px,0)';
+         return el.style(prop, translate + (scale ? ' scale(' + scale + ')' : ''));
+       } // Calculates Levenshtein distance between two strings
+       // see:  https://en.wikipedia.org/wiki/Levenshtein_distance
+       // first converts the strings to lowercase and replaces diacritic marks with ascii equivalents.

 
 

-           if (_isCancelled) {
-             if (hasHidden) {
-               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('modes.drag_node.connected_to_hidden'))();
-             }
+       function utilEditDistance(a, b) {
+         a = remove$6(a.toLowerCase());
+         b = remove$6(b.toLowerCase());
+         if (a.length === 0) return b.length;
+         if (b.length === 0) return a.length;
+         var matrix = [];
+         var i, j;

 
 

-             return drag.cancel();
-           }
+         for (i = 0; i <= b.length; i++) {
+           matrix[i] = [i];
+         }

 
 

-           if (_wasMidpoint) {
-             var midpoint = entity;
-             entity = osmNode();
-             context.perform(actionAddMidpoint(midpoint, entity));
-             entity = context.entity(entity.id); // get post-action entity
+         for (j = 0; j <= a.length; j++) {
+           matrix[0][j] = j;
+         }

 
 

-             var vertex = context.surface().selectAll('.' + entity.id);
-             drag.targetNode(vertex.node()).targetEntity(entity);
-           } else {
-             context.perform(actionNoop());
+         for (i = 1; i <= b.length; i++) {
+           for (j = 1; j <= a.length; j++) {
+             if (b.charAt(i - 1) === a.charAt(j - 1)) {
+               matrix[i][j] = matrix[i - 1][j - 1];
+             } else {
+               matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, // substitution
+               Math.min(matrix[i][j - 1] + 1, // insertion
+               matrix[i - 1][j] + 1)); // deletion
+             }

            }
            }

+         }

 
 

-           _activeEntity = entity;
-           _startLoc = entity.loc;
-           hover.ignoreVertex(entity.geometry(context.graph()) === 'vertex');
-           context.surface().selectAll('.' + _activeEntity.id).classed('active', true);
-           context.enter(mode);
-         } // related code
-         // - `behavior/draw.js` `datum()`
+         return matrix[b.length][a.length];
+       } // a d3.mouse-alike which
+       // 1. Only works on HTML elements, not SVG
+       // 2. Does not cause style recalculation

 
 

+       function utilFastMouse(container) {
+         var rect = container.getBoundingClientRect();
+         var rectLeft = rect.left;
+         var rectTop = rect.top;
+         var clientLeft = +container.clientLeft;
+         var clientTop = +container.clientTop;
+         return function (e) {
+           return [e.clientX - rectLeft - clientLeft, e.clientY - rectTop - clientTop];
+         };
+       }
+       function utilAsyncMap(inputs, func, callback) {
+         var remaining = inputs.length;
+         var results = [];
+         var errors = [];
+         inputs.forEach(function (d, i) {
+           func(d, function done(err, data) {
+             errors[i] = err;
+             results[i] = data;
+             remaining--;
+             if (!remaining) callback(errors, results);
+           });
+         });
+       } // wraps an index to an interval [0..length-1]

 
 

-         function datum(d3_event) {
-           if (!d3_event || d3_event.altKey) {
-             return {};
-           } else {
-             // When dragging, snap only to touch targets..
-             // (this excludes area fills and active drawing elements)
-             var d = d3_event.target.__data__;
-             return d && d.properties && d.properties.target ? d : {};
-           }
+       function utilWrap(index, length) {
+         if (index < 0) {
+           index += Math.ceil(-index / length) * length;

          }
 
          }
 

-         function doMove(d3_event, entity, nudge) {
-           nudge = nudge || [0, 0];
-           var currPoint = d3_event && d3_event.point || context.projection(_lastLoc);
-           var currMouse = geoVecSubtract(currPoint, nudge);
-           var loc = context.projection.invert(currMouse);
-           var target, edge;
+         return index % length;
+       }
+       /**
+        * a replacement for functor
+        *
+        * @param {*} value any value
+        * @returns {Function} a function that returns that value or the value if it's a function
+        */

 
 

-           if (!_nudgeInterval) {
-             // If not nudging at the edge of the viewport, try to snap..
-             // related code
-             // - `mode/drag_node.js`     `doMove()`
-             // - `behavior/draw.js`      `click()`
-             // - `behavior/draw_way.js`  `move()`
-             var d = datum(d3_event);
-             target = d && d.properties && d.properties.entity;
-             var targetLoc = target && target.loc;
-             var targetNodes = d && d.properties && d.properties.nodes;
+       function utilFunctor(value) {
+         if (typeof value === 'function') return value;
+         return function () {
+           return value;
+         };
+       }
+       function utilNoAuto(selection) {
+         var isText = selection.size() && selection.node().tagName.toLowerCase() === 'textarea';
+         return selection // assign 'new-password' even for non-password fields to prevent browsers (Chrome) ignoring 'off'
+         .attr('autocomplete', 'new-password').attr('autocorrect', 'off').attr('autocapitalize', 'off').attr('spellcheck', isText ? 'true' : 'false');
+       } // https://stackoverflow.com/questions/194846/is-there-any-kind-of-hash-code-function-in-javascript
+       // https://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/

 
 

-             if (targetLoc) {
-               // snap to node/vertex - a point target with `.loc`
-               if (shouldSnapToNode(target)) {
-                 loc = targetLoc;
-               }
-             } else if (targetNodes) {
-               // snap to way - a line target with `.nodes`
-               edge = geoChooseEdge(targetNodes, context.map().mouse(), context.projection, end.id);
+       function utilHashcode(str) {
+         var hash = 0;

 
 

-               if (edge) {
-                 loc = edge.loc;
-               }
-             }
-           }
+         if (str.length === 0) {
+           return hash;
+         }

 
 

-           context.replace(actionMoveNode(entity.id, loc)); // Below here: validations
+         for (var i = 0; i < str.length; i++) {
+           var _char = str.charCodeAt(i);

 
 

-           var isInvalid = false; // Check if this connection to `target` could cause relations to break..
+           hash = (hash << 5) - hash + _char;
+           hash = hash & hash; // Convert to 32bit integer
+         }

 
 

-           if (target) {
-             isInvalid = hasRelationConflict(entity, target, edge, context.graph());
-           } // Check if this drag causes the geometry to break..
+         return hash;
+       } // Returns version of `str` with all runs of special characters replaced by `_`;
+       // suitable for HTML ids, classes, selectors, etc.

 
 

+       function utilSafeClassName(str) {
+         return str.toLowerCase().replace(/[^a-z0-9]+/g, '_');
+       } // Returns string based on `val` that is highly unlikely to collide with an id
+       // used previously or that's present elsewhere in the document. Useful for preventing
+       // browser-provided autofills or when embedding iD on pages with unknown elements.

 
 

-           if (!isInvalid) {
-             isInvalid = hasInvalidGeometry(entity, context.graph());
-           }
+       function utilUniqueDomId(val) {
+         return 'ideditor-' + utilSafeClassName(val.toString()) + '-' + new Date().getTime().toString();
+       } // Returns the length of `str` in unicode characters. This can be less than
+       // `String.length()` since a single unicode character can be composed of multiple
+       // JavaScript UTF-16 code units.

 
 

-           var nope = context.surface().classed('nope');
+       function utilUnicodeCharsCount(str) {
+         // Native ES2015 implementations of `Array.from` split strings into unicode characters
+         return Array.from(str).length;
+       } // Returns a new string representing `str` cut from its start to `limit` length
+       // in unicode characters. Note that this runs the risk of splitting graphemes.

 
 

-           if (isInvalid === 'relation' || isInvalid === 'restriction') {
-             if (!nope) {
-               // about to nope - show hint
-               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('operations.connect.' + isInvalid, {
-                 relation: _mainPresetIndex.item('type/restriction').name()
-               }))();
-             }
-           } else if (isInvalid) {
-             var errorID = isInvalid === 'line' ? 'lines' : 'areas';
-             context.ui().flash.duration(3000).iconName('#iD-icon-no').label(_t('self_intersection.error.' + errorID))();
-           } else {
-             if (nope) {
-               // about to un-nope, remove hint
-               context.ui().flash.duration(1).label('')();
-             }
-           }
+       function utilUnicodeCharsTruncated(str, limit) {
+         return Array.from(str).slice(0, limit).join('');
+       }

 
 

-           var nopeDisabled = context.surface().classed('nope-disabled');
+       function osmEntity(attrs) {
+         // For prototypal inheritance.
+         if (this instanceof osmEntity) return; // Create the appropriate subtype.

 
 

-           if (nopeDisabled) {
-             context.surface().classed('nope', false).classed('nope-suppressed', isInvalid);
-           } else {
-             context.surface().classed('nope', isInvalid).classed('nope-suppressed', false);
-           }
+         if (attrs && attrs.type) {
+           return osmEntity[attrs.type].apply(this, arguments);
+         } else if (attrs && attrs.id) {
+           return osmEntity[osmEntity.id.type(attrs.id)].apply(this, arguments);
+         } // Initialize a generic Entity (used only in tests).

 
 

-           _lastLoc = loc;
-         } // Uses `actionConnect.disabled()` to know whether this connection is ok..

 
 

+         return new osmEntity().initialize(arguments);
+       }

 
 

-         function hasRelationConflict(entity, target, edge, graph) {
-           var testGraph = graph.update(); // copy
-           // if snapping to way - add midpoint there and consider that the target..
+       osmEntity.id = function (type) {
+         return osmEntity.id.fromOSM(type, osmEntity.id.next[type]--);
+       };

 
 

-           if (edge) {
-             var midpoint = osmNode();
-             var action = actionAddMidpoint({
-               loc: edge.loc,
-               edge: [target.nodes[edge.index - 1], target.nodes[edge.index]]
-             }, midpoint);
-             testGraph = action(testGraph);
-             target = midpoint;
-           } // can we connect to it?
+       osmEntity.id.next = {
+         changeset: -1,
+         node: -1,
+         way: -1,
+         relation: -1
+       };

 
 

+       osmEntity.id.fromOSM = function (type, id) {
+         return type[0] + id;
+       };

 
 

-           var ids = [entity.id, target.id];
-           return actionConnect(ids).disabled(testGraph);
-         }
+       osmEntity.id.toOSM = function (id) {
+         return id.slice(1);
+       };

 
 

-         function hasInvalidGeometry(entity, graph) {
-           var parents = graph.parentWays(entity);
-           var i, j, k;
+       osmEntity.id.type = function (id) {
+         return {
+           'c': 'changeset',
+           'n': 'node',
+           'w': 'way',
+           'r': 'relation'
+         }[id[0]];
+       }; // A function suitable for use as the second argument to d3.selection#data().

 
 

-           for (i = 0; i < parents.length; i++) {
-             var parent = parents[i];
-             var nodes = [];
-             var activeIndex = null; // which multipolygon ring contains node being dragged
-             // test any parent multipolygons for valid geometry

 
 

-             var relations = graph.parentRelations(parent);
+       osmEntity.key = function (entity) {
+         return entity.id + 'v' + (entity.v || 0);
+       };

 
 

-             for (j = 0; j < relations.length; j++) {
-               if (!relations[j].isMultipolygon()) continue;
-               var rings = osmJoinWays(relations[j].members, graph); // find active ring and test it for self intersections
+       var _deprecatedTagValuesByKey;

 
 

-               for (k = 0; k < rings.length; k++) {
-                 nodes = rings[k].nodes;
+       osmEntity.deprecatedTagValuesByKey = function (dataDeprecated) {
+         if (!_deprecatedTagValuesByKey) {
+           _deprecatedTagValuesByKey = {};
+           dataDeprecated.forEach(function (d) {
+             var oldKeys = Object.keys(d.old);

 
 

-                 if (nodes.find(function (n) {
-                   return n.id === entity.id;
-                 })) {
-                   activeIndex = k;
+             if (oldKeys.length === 1) {
+               var oldKey = oldKeys[0];
+               var oldValue = d.old[oldKey];

 
 

-                   if (geoHasSelfIntersections(nodes, entity.id)) {
-                     return 'multipolygonMember';
-                   }
+               if (oldValue !== '*') {
+                 if (!_deprecatedTagValuesByKey[oldKey]) {
+                   _deprecatedTagValuesByKey[oldKey] = [oldValue];
+                 } else {
+                   _deprecatedTagValuesByKey[oldKey].push(oldValue);

                  }
                  }

+               }
+             }
+           });
+         }

 
 

-                 rings[k].coords = nodes.map(function (n) {
-                   return n.loc;
-                 });
-               } // test active ring for intersections with other rings in the multipolygon
-
+         return _deprecatedTagValuesByKey;
+       };

 
 

-               for (k = 0; k < rings.length; k++) {
-                 if (k === activeIndex) continue; // make sure active ring doesn't cross passive rings
+       osmEntity.prototype = {
+         tags: {},
+         initialize: function initialize(sources) {
+           for (var i = 0; i < sources.length; ++i) {
+             var source = sources[i];

 
 

-                 if (geoHasLineIntersections(rings[activeIndex].nodes, rings[k].nodes, entity.id)) {
-                   return 'multipolygonRing';
+             for (var prop in source) {
+               if (Object.prototype.hasOwnProperty.call(source, prop)) {
+                 if (source[prop] === undefined) {
+                   delete this[prop];
+                 } else {
+                   this[prop] = source[prop];

                  }
                }
                  }
                }

-             } // If we still haven't tested this node's parent way for self-intersections.
-             // (because it's not a member of a multipolygon), test it now.
+             }
+           }

 
 

+           if (!this.id && this.type) {
+             this.id = osmEntity.id(this.type);
+           }

 
 

-             if (activeIndex === null) {
-               nodes = parent.nodes.map(function (nodeID) {
-                 return graph.entity(nodeID);
-               });
+           if (!this.hasOwnProperty('visible')) {
+             this.visible = true;
+           }

 
 

-               if (nodes.length && geoHasSelfIntersections(nodes, entity.id)) {
-                 return parent.geometry(graph);
-               }
+           if (debug) {
+             Object.freeze(this);
+             Object.freeze(this.tags);
+             if (this.loc) Object.freeze(this.loc);
+             if (this.nodes) Object.freeze(this.nodes);
+             if (this.members) Object.freeze(this.members);
+           }
+
+           return this;
+         },
+         copy: function copy(resolver, copies) {
+           if (copies[this.id]) return copies[this.id];
+           var copy = osmEntity(this, {
+             id: undefined,
+             user: undefined,
+             version: undefined
+           });
+           copies[this.id] = copy;
+           return copy;
+         },
+         osmId: function osmId() {
+           return osmEntity.id.toOSM(this.id);
+         },
+         isNew: function isNew() {
+           return this.osmId() < 0;
+         },
+         update: function update(attrs) {
+           return osmEntity(this, attrs, {
+             v: 1 + (this.v || 0)
+           });
+         },
+         mergeTags: function mergeTags(tags) {
+           var merged = Object.assign({}, this.tags); // shallow copy
+
+           var changed = false;
+
+           for (var k in tags) {
+             var t1 = merged[k];
+             var t2 = tags[k];
+
+             if (!t1) {
+               changed = true;
+               merged[k] = t2;
+             } else if (t1 !== t2) {
+               changed = true;
+               merged[k] = utilUnicodeCharsTruncated(utilArrayUnion(t1.split(/;\s*/), t2.split(/;\s*/)).join(';'), 255 // avoid exceeding character limit; see also services/osm.js -> maxCharsForTagValue()
+               );

              }
            }
 
              }
            }
 

+           return changed ? this.update({
+             tags: merged
+           }) : this;
+         },
+         intersects: function intersects(extent, resolver) {
+           return this.extent(resolver).intersects(extent);
+         },
+         hasNonGeometryTags: function hasNonGeometryTags() {
+           return Object.keys(this.tags).some(function (k) {
+             return k !== 'area';
+           });
+         },
+         hasParentRelations: function hasParentRelations(resolver) {
+           return resolver.parentRelations(this).length > 0;
+         },
+         hasInterestingTags: function hasInterestingTags() {
+           return Object.keys(this.tags).some(osmIsInterestingTag);
+         },
+         isHighwayIntersection: function isHighwayIntersection() {

            return false;
            return false;

-         }
+         },
+         isDegenerate: function isDegenerate() {
+           return true;
+         },
+         deprecatedTags: function deprecatedTags(dataDeprecated) {
+           var tags = this.tags; // if there are no tags, none can be deprecated

 
 

-         function move(d3_event, entity, point) {
-           if (_isCancelled) return;
-           d3_event.stopPropagation();
-           context.surface().classed('nope-disabled', d3_event.altKey);
-           _lastLoc = context.projection.invert(point);
-           doMove(d3_event, entity);
-           var nudge = geoViewportEdge(point, context.map().dimensions());
+           if (Object.keys(tags).length === 0) return [];
+           var deprecated = [];
+           dataDeprecated.forEach(function (d) {
+             var oldKeys = Object.keys(d.old);

 
 

-           if (nudge) {
-             startNudge(d3_event, entity, nudge);
-           } else {
-             stopNudge();
-           }
-         }
+             if (d.replace) {
+               var hasExistingValues = Object.keys(d.replace).some(function (replaceKey) {
+                 if (!tags[replaceKey] || d.old[replaceKey]) return false;
+                 var replaceValue = d.replace[replaceKey];
+                 if (replaceValue === '*') return false;
+                 if (replaceValue === tags[replaceKey]) return false;
+                 return true;
+               }); // don't flag deprecated tags if the upgrade path would overwrite existing data - #7843

 
 

-         function end(d3_event, entity) {
-           if (_isCancelled) return;
-           var wasPoint = entity.geometry(context.graph()) === 'point';
-           var d = datum(d3_event);
-           var nope = d && d.properties && d.properties.nope || context.surface().classed('nope');
-           var target = d && d.properties && d.properties.entity; // entity to snap to
+               if (hasExistingValues) return;
+             }

 
 

-           if (nope) {
-             // bounce back
-             context.perform(_actionBounceBack(entity.id, _startLoc));
-           } else if (target && target.type === 'way') {
-             var choice = geoChooseEdge(context.graph().childNodes(target), context.map().mouse(), context.projection, entity.id);
-             context.replace(actionAddMidpoint({
-               loc: choice.loc,
-               edge: [target.nodes[choice.index - 1], target.nodes[choice.index]]
-             }, entity), connectAnnotation(entity, target));
-           } else if (target && target.type === 'node' && shouldSnapToNode(target)) {
-             context.replace(actionConnect([target.id, entity.id]), connectAnnotation(entity, target));
-           } else if (_wasMidpoint) {
-             context.replace(actionNoop(), _t('operations.add.annotation.vertex'));
-           } else {
-             context.replace(actionNoop(), moveAnnotation(entity));
-           }
+             var matchesDeprecatedTags = oldKeys.every(function (oldKey) {
+               if (!tags[oldKey]) return false;
+               if (d.old[oldKey] === '*') return true;
+               if (d.old[oldKey] === tags[oldKey]) return true;
+               var vals = tags[oldKey].split(';').filter(Boolean);

 
 

-           if (wasPoint) {
-             context.enter(modeSelect(context, [entity.id]));
-           } else {
-             var reselection = _restoreSelectedIDs.filter(function (id) {
-               return context.graph().hasEntity(id);
+               if (vals.length === 0) {
+                 return false;
+               } else if (vals.length > 1) {
+                 return vals.indexOf(d.old[oldKey]) !== -1;
+               } else {
+                 if (tags[oldKey] === d.old[oldKey]) {
+                   if (d.replace && d.old[oldKey] === d.replace[oldKey]) {
+                     var replaceKeys = Object.keys(d.replace);
+                     return !replaceKeys.every(function (replaceKey) {
+                       return tags[replaceKey] === d.replace[replaceKey];
+                     });
+                   } else {
+                     return true;
+                   }
+                 }
+               }
+
+               return false;

              });
 
              });
 

-             if (reselection.length) {
-               context.enter(modeSelect(context, reselection));
-             } else {
-               context.enter(modeBrowse(context));
+             if (matchesDeprecatedTags) {
+               deprecated.push(d);

              }
              }

-           }
+           });
+           return deprecated;

          }
          }

+       };

 
 

-         function _actionBounceBack(nodeID, toLoc) {
-           var moveNode = actionMoveNode(nodeID, toLoc);
+       function osmLanes(entity) {
+         if (entity.type !== 'way') return null;
+         if (!entity.tags.highway) return null;
+         var tags = entity.tags;
+         var isOneWay = entity.isOneWay();
+         var laneCount = getLaneCount(tags, isOneWay);
+         var maxspeed = parseMaxspeed(tags);
+         var laneDirections = parseLaneDirections(tags, isOneWay, laneCount);
+         var forward = laneDirections.forward;
+         var backward = laneDirections.backward;
+         var bothways = laneDirections.bothways; // parse the piped string 'x|y|z' format

 
 

-           var action = function action(graph, t) {
-             // last time through, pop off the bounceback perform.
-             // it will then overwrite the initial perform with a moveNode that does nothing
-             if (t === 1) context.pop();
-             return moveNode(graph, t);
-           };
+         var turnLanes = {};
+         turnLanes.unspecified = parseTurnLanes(tags['turn:lanes']);
+         turnLanes.forward = parseTurnLanes(tags['turn:lanes:forward']);
+         turnLanes.backward = parseTurnLanes(tags['turn:lanes:backward']);
+         var maxspeedLanes = {};
+         maxspeedLanes.unspecified = parseMaxspeedLanes(tags['maxspeed:lanes'], maxspeed);
+         maxspeedLanes.forward = parseMaxspeedLanes(tags['maxspeed:lanes:forward'], maxspeed);
+         maxspeedLanes.backward = parseMaxspeedLanes(tags['maxspeed:lanes:backward'], maxspeed);
+         var psvLanes = {};
+         psvLanes.unspecified = parseMiscLanes(tags['psv:lanes']);
+         psvLanes.forward = parseMiscLanes(tags['psv:lanes:forward']);
+         psvLanes.backward = parseMiscLanes(tags['psv:lanes:backward']);
+         var busLanes = {};
+         busLanes.unspecified = parseMiscLanes(tags['bus:lanes']);
+         busLanes.forward = parseMiscLanes(tags['bus:lanes:forward']);
+         busLanes.backward = parseMiscLanes(tags['bus:lanes:backward']);
+         var taxiLanes = {};
+         taxiLanes.unspecified = parseMiscLanes(tags['taxi:lanes']);
+         taxiLanes.forward = parseMiscLanes(tags['taxi:lanes:forward']);
+         taxiLanes.backward = parseMiscLanes(tags['taxi:lanes:backward']);
+         var hovLanes = {};
+         hovLanes.unspecified = parseMiscLanes(tags['hov:lanes']);
+         hovLanes.forward = parseMiscLanes(tags['hov:lanes:forward']);
+         hovLanes.backward = parseMiscLanes(tags['hov:lanes:backward']);
+         var hgvLanes = {};
+         hgvLanes.unspecified = parseMiscLanes(tags['hgv:lanes']);
+         hgvLanes.forward = parseMiscLanes(tags['hgv:lanes:forward']);
+         hgvLanes.backward = parseMiscLanes(tags['hgv:lanes:backward']);
+         var bicyclewayLanes = {};
+         bicyclewayLanes.unspecified = parseBicycleWay(tags['bicycleway:lanes']);
+         bicyclewayLanes.forward = parseBicycleWay(tags['bicycleway:lanes:forward']);
+         bicyclewayLanes.backward = parseBicycleWay(tags['bicycleway:lanes:backward']);
+         var lanesObj = {
+           forward: [],
+           backward: [],
+           unspecified: []
+         }; // map forward/backward/unspecified of each lane type to lanesObj

 
 

-           action.transitionable = true;
-           return action;
+         mapToLanesObj(lanesObj, turnLanes, 'turnLane');
+         mapToLanesObj(lanesObj, maxspeedLanes, 'maxspeed');
+         mapToLanesObj(lanesObj, psvLanes, 'psv');
+         mapToLanesObj(lanesObj, busLanes, 'bus');
+         mapToLanesObj(lanesObj, taxiLanes, 'taxi');
+         mapToLanesObj(lanesObj, hovLanes, 'hov');
+         mapToLanesObj(lanesObj, hgvLanes, 'hgv');
+         mapToLanesObj(lanesObj, bicyclewayLanes, 'bicycleway');
+         return {
+           metadata: {
+             count: laneCount,
+             oneway: isOneWay,
+             forward: forward,
+             backward: backward,
+             bothways: bothways,
+             turnLanes: turnLanes,
+             maxspeed: maxspeed,
+             maxspeedLanes: maxspeedLanes,
+             psvLanes: psvLanes,
+             busLanes: busLanes,
+             taxiLanes: taxiLanes,
+             hovLanes: hovLanes,
+             hgvLanes: hgvLanes,
+             bicyclewayLanes: bicyclewayLanes
+           },
+           lanes: lanesObj
+         };
+       }
+
+       function getLaneCount(tags, isOneWay) {
+         var count;
+
+         if (tags.lanes) {
+           count = parseInt(tags.lanes, 10);
+
+           if (count > 0) {
+             return count;
+           }

          }
 
          }
 

-         function cancel() {
-           drag.cancel();
-           context.enter(modeBrowse(context));
+         switch (tags.highway) {
+           case 'trunk':
+           case 'motorway':
+             count = isOneWay ? 2 : 4;
+             break;
+
+           default:
+             count = isOneWay ? 1 : 2;
+             break;

          }
 
          }
 

-         var drag = behaviorDrag().selector('.layer-touch.points .target').surface(context.container().select('.main-map').node()).origin(origin).on('start', start).on('move', move).on('end', end);
+         return count;
+       }

 
 

-         mode.enter = function () {
-           context.install(hover);
-           context.install(edit);
-           select(window).on('keydown.dragNode', keydown).on('keyup.dragNode', keyup);
-           context.history().on('undone.drag-node', cancel);
-         };
+       function parseMaxspeed(tags) {
+         var maxspeed = tags.maxspeed;
+         if (!maxspeed) return;
+         var maxspeedRegex = /^([0-9][\.0-9]+?)(?:[ ]?(?:km\/h|kmh|kph|mph|knots))?$/;
+         if (!maxspeedRegex.test(maxspeed)) return;
+         return parseInt(maxspeed, 10);
+       }

 
 

-         mode.exit = function () {
-           context.ui().sidebar.hover.cancel();
-           context.uninstall(hover);
-           context.uninstall(edit);
-           select(window).on('keydown.dragNode', null).on('keyup.dragNode', null);
-           context.history().on('undone.drag-node', null);
-           _activeEntity = null;
-           context.surface().classed('nope', false).classed('nope-suppressed', false).classed('nope-disabled', false).selectAll('.active').classed('active', false);
-           stopNudge();
-         };
+       function parseLaneDirections(tags, isOneWay, laneCount) {
+         var forward = parseInt(tags['lanes:forward'], 10);
+         var backward = parseInt(tags['lanes:backward'], 10);
+         var bothways = parseInt(tags['lanes:both_ways'], 10) > 0 ? 1 : 0;
+
+         if (parseInt(tags.oneway, 10) === -1) {
+           forward = 0;
+           bothways = 0;
+           backward = laneCount;
+         } else if (isOneWay) {
+           forward = laneCount;
+           bothways = 0;
+           backward = 0;
+         } else if (isNaN(forward) && isNaN(backward)) {
+           backward = Math.floor((laneCount - bothways) / 2);
+           forward = laneCount - bothways - backward;
+         } else if (isNaN(forward)) {
+           if (backward > laneCount - bothways) {
+             backward = laneCount - bothways;
+           }

 
 

-         mode.selectedIDs = function () {
-           if (!arguments.length) return _activeEntity ? [_activeEntity.id] : []; // no assign
+           forward = laneCount - bothways - backward;
+         } else if (isNaN(backward)) {
+           if (forward > laneCount - bothways) {
+             forward = laneCount - bothways;
+           }

 
 

-           return mode;
+           backward = laneCount - bothways - forward;
+         }
+
+         return {
+           forward: forward,
+           backward: backward,
+           bothways: bothways

          };
          };

+       }

 
 

-         mode.activeID = function () {
-           if (!arguments.length) return _activeEntity && _activeEntity.id; // no assign
+       function parseTurnLanes(tag) {
+         if (!tag) return;
+         var validValues = ['left', 'slight_left', 'sharp_left', 'through', 'right', 'slight_right', 'sharp_right', 'reverse', 'merge_to_left', 'merge_to_right', 'none'];
+         return tag.split('|').map(function (s) {
+           if (s === '') s = 'none';
+           return s.split(';').map(function (d) {
+             return validValues.indexOf(d) === -1 ? 'unknown' : d;
+           });
+         });
+       }

 
 

-           return mode;
-         };
+       function parseMaxspeedLanes(tag, maxspeed) {
+         if (!tag) return;
+         return tag.split('|').map(function (s) {
+           if (s === 'none') return s;
+           var m = parseInt(s, 10);
+           if (s === '' || m === maxspeed) return null;
+           return isNaN(m) ? 'unknown' : m;
+         });
+       }

 
 

-         mode.restoreSelectedIDs = function (_) {
-           if (!arguments.length) return _restoreSelectedIDs;
-           _restoreSelectedIDs = _;
-           return mode;
-         };
+       function parseMiscLanes(tag) {
+         if (!tag) return;
+         var validValues = ['yes', 'no', 'designated'];
+         return tag.split('|').map(function (s) {
+           if (s === '') s = 'no';
+           return validValues.indexOf(s) === -1 ? 'unknown' : s;
+         });
+       }

 
 

-         mode.behavior = drag;
-         return mode;
+       function parseBicycleWay(tag) {
+         if (!tag) return;
+         var validValues = ['yes', 'no', 'designated', 'lane'];
+         return tag.split('|').map(function (s) {
+           if (s === '') s = 'no';
+           return validValues.indexOf(s) === -1 ? 'unknown' : s;
+         });

        }
 
        }
 

-       // Safari bug https://bugs.webkit.org/show_bug.cgi?id=200829
-       var NON_GENERIC = !!nativePromiseConstructor && fails(function () {
-         nativePromiseConstructor.prototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });
-       });
+       function mapToLanesObj(lanesObj, data, key) {
+         if (data.forward) {
+           data.forward.forEach(function (l, i) {
+             if (!lanesObj.forward[i]) lanesObj.forward[i] = {};
+             lanesObj.forward[i][key] = l;
+           });
+         }

 
 

-       // `Promise.prototype.finally` method
-       // https://tc39.github.io/ecma262/#sec-promise.prototype.finally
-       _export({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {
-         'finally': function (onFinally) {
-           var C = speciesConstructor(this, getBuiltIn('Promise'));
-           var isFunction = typeof onFinally == 'function';
-           return this.then(
-             isFunction ? function (x) {
-               return promiseResolve(C, onFinally()).then(function () { return x; });
-             } : onFinally,
-             isFunction ? function (e) {
-               return promiseResolve(C, onFinally()).then(function () { throw e; });
-             } : onFinally
-           );
+         if (data.backward) {
+           data.backward.forEach(function (l, i) {
+             if (!lanesObj.backward[i]) lanesObj.backward[i] = {};
+             lanesObj.backward[i][key] = l;
+           });

          }
          }

-       });

 
 

-       // patch native Promise.prototype for native async functions
-       if ( typeof nativePromiseConstructor == 'function' && !nativePromiseConstructor.prototype['finally']) {
-         redefine(nativePromiseConstructor.prototype, 'finally', getBuiltIn('Promise').prototype['finally']);
+         if (data.unspecified) {
+           data.unspecified.forEach(function (l, i) {
+             if (!lanesObj.unspecified[i]) lanesObj.unspecified[i] = {};
+             lanesObj.unspecified[i][key] = l;
+           });
+         }

        }
 
        }
 

-       // @@search logic
-       fixRegexpWellKnownSymbolLogic('search', 1, function (SEARCH, nativeSearch, maybeCallNative) {
-         return [
-           // `String.prototype.search` method
-           // https://tc39.github.io/ecma262/#sec-string.prototype.search
-           function search(regexp) {
-             var O = requireObjectCoercible(this);
-             var searcher = regexp == undefined ? undefined : regexp[SEARCH];
-             return searcher !== undefined ? searcher.call(regexp, O) : new RegExp(regexp)[SEARCH](String(O));
-           },
-           // `RegExp.prototype[@@search]` method
-           // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@search
-           function (regexp) {
-             var res = maybeCallNative(nativeSearch, regexp, this);
-             if (res.done) return res.value;
+       function osmWay() {
+         if (!(this instanceof osmWay)) {
+           return new osmWay().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }
+       osmEntity.way = osmWay;
+       osmWay.prototype = Object.create(osmEntity.prototype);
+       Object.assign(osmWay.prototype, {
+         type: 'way',
+         nodes: [],
+         copy: function copy(resolver, copies) {
+           if (copies[this.id]) return copies[this.id];
+           var copy = osmEntity.prototype.copy.call(this, resolver, copies);
+           var nodes = this.nodes.map(function (id) {
+             return resolver.entity(id).copy(resolver, copies).id;
+           });
+           copy = copy.update({
+             nodes: nodes
+           });
+           copies[this.id] = copy;
+           return copy;
+         },
+         extent: function extent(resolver) {
+           return resolver["transient"](this, 'extent', function () {
+             var extent = geoExtent();

 
 

-             var rx = anObject(regexp);
-             var S = String(this);
+             for (var i = 0; i < this.nodes.length; i++) {
+               var node = resolver.hasEntity(this.nodes[i]);

 
 

-             var previousLastIndex = rx.lastIndex;
-             if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;
-             var result = regexpExecAbstract(rx, S);
-             if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;
-             return result === null ? -1 : result.index;
-           }
-         ];
-       });
+               if (node) {
+                 extent._extend(node.extent());
+               }
+             }

 
 

-       function quickselect$1(arr, k, left, right, compare) {
-         quickselectStep(arr, k, left || 0, right || arr.length - 1, compare || defaultCompare);
-       }
+             return extent;
+           });
+         },
+         first: function first() {
+           return this.nodes[0];
+         },
+         last: function last() {
+           return this.nodes[this.nodes.length - 1];
+         },
+         contains: function contains(node) {
+           return this.nodes.indexOf(node) >= 0;
+         },
+         affix: function affix(node) {
+           if (this.nodes[0] === node) return 'prefix';
+           if (this.nodes[this.nodes.length - 1] === node) return 'suffix';
+         },
+         layer: function layer() {
+           // explicit layer tag, clamp between -10, 10..
+           if (isFinite(this.tags.layer)) {
+             return Math.max(-10, Math.min(+this.tags.layer, 10));
+           } // implied layer tag..

 
 

-       function quickselectStep(arr, k, left, right, compare) {
-         while (right > left) {
-           if (right - left > 600) {
-             var n = right - left + 1;
-             var m = k - left + 1;
-             var z = Math.log(n);
-             var s = 0.5 * Math.exp(2 * z / 3);
-             var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
-             var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
-             var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
-             quickselectStep(arr, k, newLeft, newRight, compare);
-           }

 
 

-           var t = arr[k];
-           var i = left;
-           var j = right;
-           swap$1(arr, left, k);
-           if (compare(arr[right], t) > 0) swap$1(arr, left, right);
+           if (this.tags.covered === 'yes') return -1;
+           if (this.tags.location === 'overground') return 1;
+           if (this.tags.location === 'underground') return -1;
+           if (this.tags.location === 'underwater') return -10;
+           if (this.tags.power === 'line') return 10;
+           if (this.tags.power === 'minor_line') return 10;
+           if (this.tags.aerialway) return 10;
+           if (this.tags.bridge) return 1;
+           if (this.tags.cutting) return -1;
+           if (this.tags.tunnel) return -1;
+           if (this.tags.waterway) return -1;
+           if (this.tags.man_made === 'pipeline') return -10;
+           if (this.tags.boundary) return -10;
+           return 0;
+         },
+         // the approximate width of the line based on its tags except its `width` tag
+         impliedLineWidthMeters: function impliedLineWidthMeters() {
+           var averageWidths = {
+             highway: {
+               // width is for single lane
+               motorway: 5,
+               motorway_link: 5,
+               trunk: 4.5,
+               trunk_link: 4.5,
+               primary: 4,
+               secondary: 4,
+               tertiary: 4,
+               primary_link: 4,
+               secondary_link: 4,
+               tertiary_link: 4,
+               unclassified: 4,
+               road: 4,
+               living_street: 4,
+               bus_guideway: 4,
+               pedestrian: 4,
+               residential: 3.5,
+               service: 3.5,
+               track: 3,
+               cycleway: 2.5,
+               bridleway: 2,
+               corridor: 2,
+               steps: 2,
+               path: 1.5,
+               footway: 1.5
+             },
+             railway: {
+               // width includes ties and rail bed, not just track gauge
+               rail: 2.5,
+               light_rail: 2.5,
+               tram: 2.5,
+               subway: 2.5,
+               monorail: 2.5,
+               funicular: 2.5,
+               disused: 2.5,
+               preserved: 2.5,
+               miniature: 1.5,
+               narrow_gauge: 1.5
+             },
+             waterway: {
+               river: 50,
+               canal: 25,
+               stream: 5,
+               tidal_channel: 5,
+               fish_pass: 2.5,
+               drain: 2.5,
+               ditch: 1.5
+             }
+           };

 
 

-           while (i < j) {
-             swap$1(arr, i, j);
-             i++;
-             j--;
+           for (var key in averageWidths) {
+             if (this.tags[key] && averageWidths[key][this.tags[key]]) {
+               var width = averageWidths[key][this.tags[key]];

 
 

-             while (compare(arr[i], t) < 0) {
-               i++;
-             }
+               if (key === 'highway') {
+                 var laneCount = this.tags.lanes && parseInt(this.tags.lanes, 10);
+                 if (!laneCount) laneCount = this.isOneWay() ? 1 : 2;
+                 return width * laneCount;
+               }

 
 

-             while (compare(arr[j], t) > 0) {
-               j--;
+               return width;

              }
            }
 
              }
            }
 

-           if (compare(arr[left], t) === 0) swap$1(arr, left, j);else {
-             j++;
-             swap$1(arr, j, right);
-           }
-           if (j <= k) left = j + 1;
-           if (k <= j) right = j - 1;
-         }
-       }
+           return null;
+         },
+         isOneWay: function isOneWay() {
+           // explicit oneway tag..
+           var values = {
+             'yes': true,
+             '1': true,
+             '-1': true,
+             'reversible': true,
+             'alternating': true,
+             'no': false,
+             '0': false
+           };

 
 

-       function swap$1(arr, i, j) {
-         var tmp = arr[i];
-         arr[i] = arr[j];
-         arr[j] = tmp;
-       }
+           if (values[this.tags.oneway] !== undefined) {
+             return values[this.tags.oneway];
+           } // implied oneway tag..

 
 

-       function defaultCompare(a, b) {
-         return a < b ? -1 : a > b ? 1 : 0;
-       }

 
 

-       var RBush = /*#__PURE__*/function () {
-         function RBush() {
-           var maxEntries = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 9;
+           for (var key in this.tags) {
+             if (key in osmOneWayTags && this.tags[key] in osmOneWayTags[key]) {
+               return true;
+             }
+           }

 
 

-           _classCallCheck(this, RBush);
+           return false;
+         },
+         // Some identifier for tag that implies that this way is "sided",
+         // i.e. the right side is the 'inside' (e.g. the right side of a
+         // natural=cliff is lower).
+         sidednessIdentifier: function sidednessIdentifier() {
+           for (var key in this.tags) {
+             var value = this.tags[key];

 
 

-           // max entries in a node is 9 by default; min node fill is 40% for best performance
-           this._maxEntries = Math.max(4, maxEntries);
-           this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
-           this.clear();
-         }
+             if (key in osmRightSideIsInsideTags && value in osmRightSideIsInsideTags[key]) {
+               if (osmRightSideIsInsideTags[key][value] === true) {
+                 return key;
+               } else {
+                 // if the map's value is something other than a
+                 // literal true, we should use it so we can
+                 // special case some keys (e.g. natural=coastline
+                 // is handled differently to other naturals).
+                 return osmRightSideIsInsideTags[key][value];
+               }
+             }
+           }

 
 

-         _createClass(RBush, [{
-           key: "all",
-           value: function all() {
-             return this._all(this.data, []);
+           return null;
+         },
+         isSided: function isSided() {
+           if (this.tags.two_sided === 'yes') {
+             return false;

            }
            }

-         }, {
-           key: "search",
-           value: function search(bbox) {
-             var node = this.data;
-             var result = [];
-             if (!intersects(bbox, node)) return result;
-             var toBBox = this.toBBox;
-             var nodesToSearch = [];

 
 

-             while (node) {
-               for (var i = 0; i < node.children.length; i++) {
-                 var child = node.children[i];
-                 var childBBox = node.leaf ? toBBox(child) : child;
+           return this.sidednessIdentifier() !== null;
+         },
+         lanes: function lanes() {
+           return osmLanes(this);
+         },
+         isClosed: function isClosed() {
+           return this.nodes.length > 1 && this.first() === this.last();
+         },
+         isConvex: function isConvex(resolver) {
+           if (!this.isClosed() || this.isDegenerate()) return null;
+           var nodes = utilArrayUniq(resolver.childNodes(this));
+           var coords = nodes.map(function (n) {
+             return n.loc;
+           });
+           var curr = 0;
+           var prev = 0;

 
 

-                 if (intersects(bbox, childBBox)) {
-                   if (node.leaf) result.push(child);else if (contains(bbox, childBBox)) this._all(child, result);else nodesToSearch.push(child);
-                 }
-               }
+           for (var i = 0; i < coords.length; i++) {
+             var o = coords[(i + 1) % coords.length];
+             var a = coords[i];
+             var b = coords[(i + 2) % coords.length];
+             var res = geoVecCross(a, b, o);
+             curr = res > 0 ? 1 : res < 0 ? -1 : 0;

 
 

-               node = nodesToSearch.pop();
+             if (curr === 0) {
+               continue;
+             } else if (prev && curr !== prev) {
+               return false;

              }
 
              }
 

-             return result;
+             prev = curr;

            }
            }

-         }, {
-           key: "collides",
-           value: function collides(bbox) {
-             var node = this.data;
-             if (!intersects(bbox, node)) return false;
-             var nodesToSearch = [];

 
 

-             while (node) {
-               for (var i = 0; i < node.children.length; i++) {
-                 var child = node.children[i];
-                 var childBBox = node.leaf ? this.toBBox(child) : child;
+           return true;
+         },
+         // returns an object with the tag that implies this is an area, if any
+         tagSuggestingArea: function tagSuggestingArea() {
+           return osmTagSuggestingArea(this.tags);
+         },
+         isArea: function isArea() {
+           if (this.tags.area === 'yes') return true;
+           if (!this.isClosed() || this.tags.area === 'no') return false;
+           return this.tagSuggestingArea() !== null;
+         },
+         isDegenerate: function isDegenerate() {
+           return new Set(this.nodes).size < (this.isArea() ? 3 : 2);
+         },
+         areAdjacent: function areAdjacent(n1, n2) {
+           for (var i = 0; i < this.nodes.length; i++) {
+             if (this.nodes[i] === n1) {
+               if (this.nodes[i - 1] === n2) return true;
+               if (this.nodes[i + 1] === n2) return true;
+             }
+           }

 
 

-                 if (intersects(bbox, childBBox)) {
-                   if (node.leaf || contains(bbox, childBBox)) return true;
-                   nodesToSearch.push(child);
-                 }
-               }
+           return false;
+         },
+         geometry: function geometry(graph) {
+           return graph["transient"](this, 'geometry', function () {
+             return this.isArea() ? 'area' : 'line';
+           });
+         },
+         // returns an array of objects representing the segments between the nodes in this way
+         segments: function segments(graph) {
+           function segmentExtent(graph) {
+             var n1 = graph.hasEntity(this.nodes[0]);
+             var n2 = graph.hasEntity(this.nodes[1]);
+             return n1 && n2 && geoExtent([[Math.min(n1.loc[0], n2.loc[0]), Math.min(n1.loc[1], n2.loc[1])], [Math.max(n1.loc[0], n2.loc[0]), Math.max(n1.loc[1], n2.loc[1])]]);
+           }

 
 

-               node = nodesToSearch.pop();
+           return graph["transient"](this, 'segments', function () {
+             var segments = [];
+
+             for (var i = 0; i < this.nodes.length - 1; i++) {
+               segments.push({
+                 id: this.id + '-' + i,
+                 wayId: this.id,
+                 index: i,
+                 nodes: [this.nodes[i], this.nodes[i + 1]],
+                 extent: segmentExtent
+               });

              }
 
              }
 

-             return false;
+             return segments;
+           });
+         },
+         // If this way is not closed, append the beginning node to the end of the nodelist to close it.
+         close: function close() {
+           if (this.isClosed() || !this.nodes.length) return this;
+           var nodes = this.nodes.slice();
+           nodes = nodes.filter(noRepeatNodes);
+           nodes.push(nodes[0]);
+           return this.update({
+             nodes: nodes
+           });
+         },
+         // If this way is closed, remove any connector nodes from the end of the nodelist to unclose it.
+         unclose: function unclose() {
+           if (!this.isClosed()) return this;
+           var nodes = this.nodes.slice();
+           var connector = this.first();
+           var i = nodes.length - 1; // remove trailing connectors..
+
+           while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+             nodes.splice(i, 1);
+             i = nodes.length - 1;

            }
            }

-         }, {
-           key: "load",
-           value: function load(data) {
-             if (!(data && data.length)) return this;

 
 

-             if (data.length < this._minEntries) {
-               for (var i = 0; i < data.length; i++) {
-                 this.insert(data[i]);
-               }
+           nodes = nodes.filter(noRepeatNodes);
+           return this.update({
+             nodes: nodes
+           });
+         },
+         // Adds a node (id) in front of the node which is currently at position index.
+         // If index is undefined, the node will be added to the end of the way for linear ways,
+         //   or just before the final connecting node for circular ways.
+         // Consecutive duplicates are eliminated including existing ones.
+         // Circularity is always preserved when adding a node.
+         addNode: function addNode(id, index) {
+           var nodes = this.nodes.slice();
+           var isClosed = this.isClosed();
+           var max = isClosed ? nodes.length - 1 : nodes.length;

 
 

-               return this;
-             } // recursively build the tree with the given data from scratch using OMT algorithm
+           if (index === undefined) {
+             index = max;
+           }

 
 

+           if (index < 0 || index > max) {
+             throw new RangeError('index ' + index + ' out of range 0..' + max);
+           } // If this is a closed way, remove all connector nodes except the first one
+           // (there may be duplicates) and adjust index if necessary..

 
 

-             var node = this._build(data.slice(), 0, data.length - 1, 0);

 
 

-             if (!this.data.children.length) {
-               // save as is if tree is empty
-               this.data = node;
-             } else if (this.data.height === node.height) {
-               // split root if trees have the same height
-               this._splitRoot(this.data, node);
-             } else {
-               if (this.data.height < node.height) {
-                 // swap trees if inserted one is bigger
-                 var tmpNode = this.data;
-                 this.data = node;
-                 node = tmpNode;
-               } // insert the small tree into the large tree at appropriate level
+           if (isClosed) {
+             var connector = this.first(); // leading connectors..
+
+             var i = 1;
+
+             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index > i) index--;
+             } // trailing connectors..

 
 
 
 

-               this._insert(node, this.data.height - node.height - 1, true);
+             i = nodes.length - 1;
+
+             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index > i) index--;
+               i = nodes.length - 1;

              }
              }

-
-             return this;
-           }
-         }, {
-           key: "insert",
-           value: function insert(item) {
-             if (item) this._insert(item, this.data.height - 1);
-             return this;

            }
            }

-         }, {
-           key: "clear",
-           value: function clear() {
-             this.data = createNode([]);
-             return this;
+
+           nodes.splice(index, 0, id);
+           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);

            }
            }

-         }, {
-           key: "remove",
-           value: function remove(item, equalsFn) {
-             if (!item) return this;
-             var node = this.data;
-             var bbox = this.toBBox(item);
-             var path = [];
-             var indexes = [];
-             var i, parent, goingUp; // depth-first iterative tree traversal

 
 

-             while (node || path.length) {
-               if (!node) {
-                 // go up
-                 node = path.pop();
-                 parent = path[path.length - 1];
-                 i = indexes.pop();
-                 goingUp = true;
-               }
+           return this.update({
+             nodes: nodes
+           });
+         },
+         // Replaces the node which is currently at position index with the given node (id).
+         // Consecutive duplicates are eliminated including existing ones.
+         // Circularity is preserved when updating a node.
+         updateNode: function updateNode(id, index) {
+           var nodes = this.nodes.slice();
+           var isClosed = this.isClosed();
+           var max = nodes.length - 1;

 
 

-               if (node.leaf) {
-                 // check current node
-                 var index = findItem(item, node.children, equalsFn);
+           if (index === undefined || index < 0 || index > max) {
+             throw new RangeError('index ' + index + ' out of range 0..' + max);
+           } // If this is a closed way, remove all connector nodes except the first one
+           // (there may be duplicates) and adjust index if necessary..

 
 

-                 if (index !== -1) {
-                   // item found, remove the item and condense tree upwards
-                   node.children.splice(index, 1);
-                   path.push(node);

 
 

-                   this._condense(path);
+           if (isClosed) {
+             var connector = this.first(); // leading connectors..

 
 

-                   return this;
-                 }
-               }
+             var i = 1;

 
 

-               if (!goingUp && !node.leaf && contains(node, bbox)) {
-                 // go down
-                 path.push(node);
-                 indexes.push(i);
-                 i = 0;
-                 parent = node;
-                 node = node.children[0];
-               } else if (parent) {
-                 // go right
-                 i++;
-                 node = parent.children[i];
-                 goingUp = false;
-               } else node = null; // nothing found
+             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index > i) index--;
+             } // trailing connectors..

 
 

-             }

 
 

-             return this;
-           }
-         }, {
-           key: "toBBox",
-           value: function toBBox(item) {
-             return item;
-           }
-         }, {
-           key: "compareMinX",
-           value: function compareMinX(a, b) {
-             return a.minX - b.minX;
-           }
-         }, {
-           key: "compareMinY",
-           value: function compareMinY(a, b) {
-             return a.minY - b.minY;
-           }
-         }, {
-           key: "toJSON",
-           value: function toJSON() {
-             return this.data;
-           }
-         }, {
-           key: "fromJSON",
-           value: function fromJSON(data) {
-             this.data = data;
-             return this;
-           }
-         }, {
-           key: "_all",
-           value: function _all(node, result) {
-             var nodesToSearch = [];
+             i = nodes.length - 1;

 
 

-             while (node) {
-               if (node.leaf) result.push.apply(result, _toConsumableArray(node.children));else nodesToSearch.push.apply(nodesToSearch, _toConsumableArray(node.children));
-               node = nodesToSearch.pop();
-             }
+             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index === i) index = 0; // update leading connector instead

 
 

-             return result;
+               i = nodes.length - 1;
+             }

            }
            }

-         }, {
-           key: "_build",
-           value: function _build(items, left, right, height) {
-             var N = right - left + 1;
-             var M = this._maxEntries;
-             var node;

 
 

-             if (N <= M) {
-               // reached leaf level; return leaf
-               node = createNode(items.slice(left, right + 1));
-               calcBBox(node, this.toBBox);
-               return node;
-             }
+           nodes.splice(index, 1, id);
+           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..

 
 

-             if (!height) {
-               // target height of the bulk-loaded tree
-               height = Math.ceil(Math.log(N) / Math.log(M)); // target number of root entries to maximize storage utilization
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);
+           }

 
 

-               M = Math.ceil(N / Math.pow(M, height - 1));
+           return this.update({
+             nodes: nodes
+           });
+         },
+         // Replaces each occurrence of node id needle with replacement.
+         // Consecutive duplicates are eliminated including existing ones.
+         // Circularity is preserved.
+         replaceNode: function replaceNode(needleID, replacementID) {
+           var nodes = this.nodes.slice();
+           var isClosed = this.isClosed();
+
+           for (var i = 0; i < nodes.length; i++) {
+             if (nodes[i] === needleID) {
+               nodes[i] = replacementID;

              }
              }

+           }

 
 

-             node = createNode([]);
-             node.leaf = false;
-             node.height = height; // split the items into M mostly square tiles
+           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..

 
 

-             var N2 = Math.ceil(N / M);
-             var N1 = N2 * Math.ceil(Math.sqrt(M));
-             multiSelect(items, left, right, N1, this.compareMinX);
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);
+           }

 
 

-             for (var i = left; i <= right; i += N1) {
-               var right2 = Math.min(i + N1 - 1, right);
-               multiSelect(items, i, right2, N2, this.compareMinY);
+           return this.update({
+             nodes: nodes
+           });
+         },
+         // Removes each occurrence of node id.
+         // Consecutive duplicates are eliminated including existing ones.
+         // Circularity is preserved.
+         removeNode: function removeNode(id) {
+           var nodes = this.nodes.slice();
+           var isClosed = this.isClosed();
+           nodes = nodes.filter(function (node) {
+             return node !== id;
+           }).filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..

 
 

-               for (var j = i; j <= right2; j += N2) {
-                 var right3 = Math.min(j + N2 - 1, right2); // pack each entry recursively
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);
+           }

 
 

-                 node.children.push(this._build(items, j, right3, height - 1));
-               }
+           return this.update({
+             nodes: nodes
+           });
+         },
+         asJXON: function asJXON(changeset_id) {
+           var r = {
+             way: {
+               '@id': this.osmId(),
+               '@version': this.version || 0,
+               nd: this.nodes.map(function (id) {
+                 return {
+                   keyAttributes: {
+                     ref: osmEntity.id.toOSM(id)
+                   }
+                 };
+               }, this),
+               tag: Object.keys(this.tags).map(function (k) {
+                 return {
+                   keyAttributes: {
+                     k: k,
+                     v: this.tags[k]
+                   }
+                 };
+               }, this)

              }
              }

+           };

 
 

-             calcBBox(node, this.toBBox);
-             return node;
+           if (changeset_id) {
+             r.way['@changeset'] = changeset_id;

            }
            }

-         }, {
-           key: "_chooseSubtree",
-           value: function _chooseSubtree(bbox, node, level, path) {
-             while (true) {
-               path.push(node);
-               if (node.leaf || path.length - 1 === level) break;
-               var minArea = Infinity;
-               var minEnlargement = Infinity;
-               var targetNode = void 0;

 
 

-               for (var i = 0; i < node.children.length; i++) {
-                 var child = node.children[i];
-                 var area = bboxArea(child);
-                 var enlargement = enlargedArea(bbox, child) - area; // choose entry with the least area enlargement
+           return r;
+         },
+         asGeoJSON: function asGeoJSON(resolver) {
+           return resolver["transient"](this, 'GeoJSON', function () {
+             var coordinates = resolver.childNodes(this).map(function (n) {
+               return n.loc;
+             });

 
 

-                 if (enlargement < minEnlargement) {
-                   minEnlargement = enlargement;
-                   minArea = area < minArea ? area : minArea;
-                   targetNode = child;
-                 } else if (enlargement === minEnlargement) {
-                   // otherwise choose one with the smallest area
-                   if (area < minArea) {
-                     minArea = area;
-                     targetNode = child;
-                   }
-                 }
-               }
+             if (this.isArea() && this.isClosed()) {
+               return {
+                 type: 'Polygon',
+                 coordinates: [coordinates]
+               };
+             } else {
+               return {
+                 type: 'LineString',
+                 coordinates: coordinates
+               };
+             }
+           });
+         },
+         area: function area(resolver) {
+           return resolver["transient"](this, 'area', function () {
+             var nodes = resolver.childNodes(this);
+             var json = {
+               type: 'Polygon',
+               coordinates: [nodes.map(function (n) {
+                 return n.loc;
+               })]
+             };

 
 

-               node = targetNode || node.children[0];
+             if (!this.isClosed() && nodes.length) {
+               json.coordinates[0].push(nodes[0].loc);

              }
 
              }
 

-             return node;
-           }
-         }, {
-           key: "_insert",
-           value: function _insert(item, level, isNode) {
-             var bbox = isNode ? item : this.toBBox(item);
-             var insertPath = []; // find the best node for accommodating the item, saving all nodes along the path too
+             var area = d3_geoArea(json); // Heuristic for detecting counterclockwise winding order. Assumes
+             // that OpenStreetMap polygons are not hemisphere-spanning.

 
 

-             var node = this._chooseSubtree(bbox, this.data, level, insertPath); // put the item into the node
+             if (area > 2 * Math.PI) {
+               json.coordinates[0] = json.coordinates[0].reverse();
+               area = d3_geoArea(json);
+             }

 
 

+             return isNaN(area) ? 0 : area;
+           });
+         }
+       }); // Filter function to eliminate consecutive duplicates.

 
 

-             node.children.push(item);
-             extend$1(node, bbox); // split on node overflow; propagate upwards if necessary
+       function noRepeatNodes(node, i, arr) {
+         return i === 0 || node !== arr[i - 1];
+       }

 
 

-             while (level >= 0) {
-               if (insertPath[level].children.length > this._maxEntries) {
-                 this._split(insertPath, level);
+       //
+       // 1. Relation tagged with `type=multipolygon` and no interesting tags.
+       // 2. One and only one member with the `outer` role. Must be a way with interesting tags.
+       // 3. No members without a role.
+       //
+       // Old multipolygons are no longer recommended but are still rendered as areas by iD.

 
 

-                 level--;
-               } else break;
-             } // adjust bboxes along the insertion path
+       function osmOldMultipolygonOuterMemberOfRelation(entity, graph) {
+         if (entity.type !== 'relation' || !entity.isMultipolygon() || Object.keys(entity.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }

 
 

+         var outerMember;

 
 

-             this._adjustParentBBoxes(bbox, insertPath, level);
-           } // split overflowed node into two
+         for (var memberIndex in entity.members) {
+           var member = entity.members[memberIndex];

 
 

-         }, {
-           key: "_split",
-           value: function _split(insertPath, level) {
-             var node = insertPath[level];
-             var M = node.children.length;
-             var m = this._minEntries;
+           if (!member.role || member.role === 'outer') {
+             if (outerMember) return false;
+             if (member.type !== 'way') return false;
+             if (!graph.hasEntity(member.id)) return false;
+             outerMember = graph.entity(member.id);

 
 

-             this._chooseSplitAxis(node, m, M);
+             if (Object.keys(outerMember.tags).filter(osmIsInterestingTag).length === 0) {
+               return false;
+             }
+           }
+         }

 
 

-             var splitIndex = this._chooseSplitIndex(node, m, M);
+         return outerMember;
+       } // For fixing up rendering of multipolygons with tags on the outer member.
+       // https://github.com/openstreetmap/iD/issues/613

 
 

-             var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));
-             newNode.height = node.height;
-             newNode.leaf = node.leaf;
-             calcBBox(node, this.toBBox);
-             calcBBox(newNode, this.toBBox);
-             if (level) insertPath[level - 1].children.push(newNode);else this._splitRoot(node, newNode);
-           }
-         }, {
-           key: "_splitRoot",
-           value: function _splitRoot(node, newNode) {
-             // split root node
-             this.data = createNode([node, newNode]);
-             this.data.height = node.height + 1;
-             this.data.leaf = false;
-             calcBBox(this.data, this.toBBox);
-           }
-         }, {
-           key: "_chooseSplitIndex",
-           value: function _chooseSplitIndex(node, m, M) {
-             var index;
-             var minOverlap = Infinity;
-             var minArea = Infinity;
+       function osmIsOldMultipolygonOuterMember(entity, graph) {
+         if (entity.type !== 'way' || Object.keys(entity.tags).filter(osmIsInterestingTag).length === 0) {
+           return false;
+         }

 
 

-             for (var i = m; i <= M - m; i++) {
-               var bbox1 = distBBox(node, 0, i, this.toBBox);
-               var bbox2 = distBBox(node, i, M, this.toBBox);
-               var overlap = intersectionArea(bbox1, bbox2);
-               var area = bboxArea(bbox1) + bboxArea(bbox2); // choose distribution with minimum overlap
+         var parents = graph.parentRelations(entity);
+         if (parents.length !== 1) return false;
+         var parent = parents[0];

 
 

-               if (overlap < minOverlap) {
-                 minOverlap = overlap;
-                 index = i;
-                 minArea = area < minArea ? area : minArea;
-               } else if (overlap === minOverlap) {
-                 // otherwise choose distribution with minimum area
-                 if (area < minArea) {
-                   minArea = area;
-                   index = i;
-                 }
-               }
-             }
+         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }

 
 

-             return index || M - m;
-           } // sorts node children by the best axis for split
+         var members = parent.members,
+             member;

 
 

-         }, {
-           key: "_chooseSplitAxis",
-           value: function _chooseSplitAxis(node, m, M) {
-             var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX;
-             var compareMinY = node.leaf ? this.compareMinY : compareNodeMinY;
+         for (var i = 0; i < members.length; i++) {
+           member = members[i];

 
 

-             var xMargin = this._allDistMargin(node, m, M, compareMinX);
+           if (member.id === entity.id && member.role && member.role !== 'outer') {
+             // Not outer member
+             return false;
+           }

 
 

-             var yMargin = this._allDistMargin(node, m, M, compareMinY); // if total distributions margin value is minimal for x, sort by minX,
-             // otherwise it's already sorted by minY
+           if (member.id !== entity.id && (!member.role || member.role === 'outer')) {
+             // Not a simple multipolygon
+             return false;
+           }
+         }

 
 

+         return parent;
+       }
+       function osmOldMultipolygonOuterMember(entity, graph) {
+         if (entity.type !== 'way') return false;
+         var parents = graph.parentRelations(entity);
+         if (parents.length !== 1) return false;
+         var parent = parents[0];

 
 

-             if (xMargin < yMargin) node.children.sort(compareMinX);
-           } // total margin of all possible split distributions where each node is at least m full
+         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }

 
 

-         }, {
-           key: "_allDistMargin",
-           value: function _allDistMargin(node, m, M, compare) {
-             node.children.sort(compare);
-             var toBBox = this.toBBox;
-             var leftBBox = distBBox(node, 0, m, toBBox);
-             var rightBBox = distBBox(node, M - m, M, toBBox);
-             var margin = bboxMargin(leftBBox) + bboxMargin(rightBBox);
+         var members = parent.members,
+             member,
+             outerMember;

 
 

-             for (var i = m; i < M - m; i++) {
-               var child = node.children[i];
-               extend$1(leftBBox, node.leaf ? toBBox(child) : child);
-               margin += bboxMargin(leftBBox);
-             }
+         for (var i = 0; i < members.length; i++) {
+           member = members[i];

 
 

-             for (var _i = M - m - 1; _i >= m; _i--) {
-               var _child = node.children[_i];
-               extend$1(rightBBox, node.leaf ? toBBox(_child) : _child);
-               margin += bboxMargin(rightBBox);
-             }
+           if (!member.role || member.role === 'outer') {
+             if (outerMember) return false; // Not a simple multipolygon

 
 

-             return margin;
-           }
-         }, {
-           key: "_adjustParentBBoxes",
-           value: function _adjustParentBBoxes(bbox, path, level) {
-             // adjust bboxes along the given tree path
-             for (var i = level; i >= 0; i--) {
-               extend$1(path[i], bbox);
-             }
-           }
-         }, {
-           key: "_condense",
-           value: function _condense(path) {
-             // go through the path, removing empty nodes and updating bboxes
-             for (var i = path.length - 1, siblings; i >= 0; i--) {
-               if (path[i].children.length === 0) {
-                 if (i > 0) {
-                   siblings = path[i - 1].children;
-                   siblings.splice(siblings.indexOf(path[i]), 1);
-                 } else this.clear();
-               } else calcBBox(path[i], this.toBBox);
-             }
+             outerMember = member;

            }
            }

-         }]);
+         }

 
 

-         return RBush;
-       }();
+         if (!outerMember) return false;
+         var outerEntity = graph.hasEntity(outerMember.id);

 
 

-       function findItem(item, items, equalsFn) {
-         if (!equalsFn) return items.indexOf(item);
+         if (!outerEntity || !Object.keys(outerEntity.tags).filter(osmIsInterestingTag).length) {
+           return false;
+         }
+
+         return outerEntity;
+       } // Join `toJoin` array into sequences of connecting ways.
+       // Segments which share identical start/end nodes will, as much as possible,
+       // be connected with each other.
+       //
+       // The return value is a nested array. Each constituent array contains elements
+       // of `toJoin` which have been determined to connect.
+       //
+       // Each consitituent array also has a `nodes` property whose value is an
+       // ordered array of member nodes, with appropriate order reversal and
+       // start/end coordinate de-duplication.
+       //
+       // Members of `toJoin` must have, at minimum, `type` and `id` properties.
+       // Thus either an array of `osmWay`s or a relation member array may be used.
+       //
+       // If an member is an `osmWay`, its tags and childnodes may be reversed via
+       // `actionReverse` in the output.
+       //
+       // The returned sequences array also has an `actions` array property, containing
+       // any reversal actions that should be applied to the graph, should the calling
+       // code attempt to actually join the given ways.
+       //
+       // Incomplete members (those for which `graph.hasEntity(element.id)` returns
+       // false) and non-way members are ignored.
+       //

 
 

-         for (var i = 0; i < items.length; i++) {
-           if (equalsFn(item, items[i])) return i;
+       function osmJoinWays(toJoin, graph) {
+         function resolve(member) {
+           return graph.childNodes(graph.entity(member.id));

          }
 
          }
 

-         return -1;
-       } // calculate node's bbox from bboxes of its children
-
+         function reverse(item) {
+           var action = actionReverse(item.id, {
+             reverseOneway: true
+           });
+           sequences.actions.push(action);
+           return item instanceof osmWay ? action(graph).entity(item.id) : item;
+         } // make a copy containing only the items to join

 
 

-       function calcBBox(node, toBBox) {
-         distBBox(node, 0, node.children.length, toBBox, node);
-       } // min bounding rectangle of node children from k to p-1

 
 

+         toJoin = toJoin.filter(function (member) {
+           return member.type === 'way' && graph.hasEntity(member.id);
+         }); // Are the things we are joining relation members or `osmWays`?
+         // If `osmWays`, skip the "prefer a forward path" code below (see #4872)

 
 

-       function distBBox(node, k, p, toBBox, destNode) {
-         if (!destNode) destNode = createNode(null);
-         destNode.minX = Infinity;
-         destNode.minY = Infinity;
-         destNode.maxX = -Infinity;
-         destNode.maxY = -Infinity;
+         var i;
+         var joinAsMembers = true;

 
 

-         for (var i = k; i < p; i++) {
-           var child = node.children[i];
-           extend$1(destNode, node.leaf ? toBBox(child) : child);
+         for (i = 0; i < toJoin.length; i++) {
+           if (toJoin[i] instanceof osmWay) {
+             joinAsMembers = false;
+             break;
+           }

          }
 
          }
 

-         return destNode;
-       }
-
-       function extend$1(a, b) {
-         a.minX = Math.min(a.minX, b.minX);
-         a.minY = Math.min(a.minY, b.minY);
-         a.maxX = Math.max(a.maxX, b.maxX);
-         a.maxY = Math.max(a.maxY, b.maxY);
-         return a;
-       }
+         var sequences = [];
+         sequences.actions = [];

 
 

-       function compareNodeMinX(a, b) {
-         return a.minX - b.minX;
-       }
+         while (toJoin.length) {
+           // start a new sequence
+           var item = toJoin.shift();
+           var currWays = [item];
+           var currNodes = resolve(item).slice(); // add to it

 
 

-       function compareNodeMinY(a, b) {
-         return a.minY - b.minY;
-       }
+           while (toJoin.length) {
+             var start = currNodes[0];
+             var end = currNodes[currNodes.length - 1];
+             var fn = null;
+             var nodes = null; // Find the next way/member to join.

 
 

-       function bboxArea(a) {
-         return (a.maxX - a.minX) * (a.maxY - a.minY);
-       }
+             for (i = 0; i < toJoin.length; i++) {
+               item = toJoin[i];
+               nodes = resolve(item); // (for member ordering only, not way ordering - see #4872)
+               // Strongly prefer to generate a forward path that preserves the order
+               // of the members array. For multipolygons and most relations, member
+               // order does not matter - but for routes, it does. (see #4589)
+               // If we started this sequence backwards (i.e. next member way attaches to
+               // the start node and not the end node), reverse the initial way before continuing.

 
 

-       function bboxMargin(a) {
-         return a.maxX - a.minX + (a.maxY - a.minY);
-       }
+               if (joinAsMembers && currWays.length === 1 && nodes[0] !== end && nodes[nodes.length - 1] !== end && (nodes[nodes.length - 1] === start || nodes[0] === start)) {
+                 currWays[0] = reverse(currWays[0]);
+                 currNodes.reverse();
+                 start = currNodes[0];
+                 end = currNodes[currNodes.length - 1];
+               }

 
 

-       function enlargedArea(a, b) {
-         return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) * (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
-       }
+               if (nodes[0] === end) {
+                 fn = currNodes.push; // join to end

 
 

-       function intersectionArea(a, b) {
-         var minX = Math.max(a.minX, b.minX);
-         var minY = Math.max(a.minY, b.minY);
-         var maxX = Math.min(a.maxX, b.maxX);
-         var maxY = Math.min(a.maxY, b.maxY);
-         return Math.max(0, maxX - minX) * Math.max(0, maxY - minY);
-       }
+                 nodes = nodes.slice(1);
+                 break;
+               } else if (nodes[nodes.length - 1] === end) {
+                 fn = currNodes.push; // join to end

 
 

-       function contains(a, b) {
-         return a.minX <= b.minX && a.minY <= b.minY && b.maxX <= a.maxX && b.maxY <= a.maxY;
-       }
+                 nodes = nodes.slice(0, -1).reverse();
+                 item = reverse(item);
+                 break;
+               } else if (nodes[nodes.length - 1] === start) {
+                 fn = currNodes.unshift; // join to beginning

 
 

-       function intersects(a, b) {
-         return b.minX <= a.maxX && b.minY <= a.maxY && b.maxX >= a.minX && b.maxY >= a.minY;
-       }
+                 nodes = nodes.slice(0, -1);
+                 break;
+               } else if (nodes[0] === start) {
+                 fn = currNodes.unshift; // join to beginning

 
 

-       function createNode(children) {
-         return {
-           children: children,
-           height: 1,
-           leaf: true,
-           minX: Infinity,
-           minY: Infinity,
-           maxX: -Infinity,
-           maxY: -Infinity
-         };
-       } // sort an array so that items come in groups of n unsorted items, with groups sorted between each other;
-       // combines selection algorithm with binary divide & conquer approach
+                 nodes = nodes.slice(1).reverse();
+                 item = reverse(item);
+                 break;
+               } else {
+                 fn = nodes = null;
+               }
+             }

 
 

+             if (!nodes) {
+               // couldn't find a joinable way/member
+               break;
+             }

 
 

-       function multiSelect(arr, left, right, n, compare) {
-         var stack = [left, right];
+             fn.apply(currWays, [item]);
+             fn.apply(currNodes, nodes);
+             toJoin.splice(i, 1);
+           }

 
 

-         while (stack.length) {
-           right = stack.pop();
-           left = stack.pop();
-           if (right - left <= n) continue;
-           var mid = left + Math.ceil((right - left) / n / 2) * n;
-           quickselect$1(arr, mid, left, right, compare);
-           stack.push(left, mid, mid, right);
+           currWays.nodes = currNodes;
+           sequences.push(currWays);

          }
          }

-       }
-
-       var tiler = utilTiler();
-       var dispatch$1 = dispatch('loaded');
-       var _tileZoom = 14;
-       var _krUrlRoot = 'https://www.keepright.at';
-       var _krData = {
-         errorTypes: {},
-         localizeStrings: {}
-       }; // This gets reassigned if reset

 
 

-       var _cache;
+         return sequences;
+       }

 
 

-       var _krRuleset = [// no 20 - multiple node on same spot - these are mostly boundaries overlapping roads
-       30, 40, 50, 60, 70, 90, 100, 110, 120, 130, 150, 160, 170, 180, 190, 191, 192, 193, 194, 195, 196, 197, 198, 200, 201, 202, 203, 204, 205, 206, 207, 208, 210, 220, 230, 231, 232, 270, 280, 281, 282, 283, 284, 285, 290, 291, 292, 293, 294, 295, 296, 297, 298, 300, 310, 311, 312, 313, 320, 350, 360, 370, 380, 390, 400, 401, 402, 410, 411, 412, 413];
+       function actionAddMember(relationId, member, memberIndex, insertPair) {
+         return function action(graph) {
+           var relation = graph.entity(relationId); // There are some special rules for Public Transport v2 routes.

 
 

-       function abortRequest(controller) {
-         if (controller) {
-           controller.abort();
-         }
-       }
+           var isPTv2 = /stop|platform/.test(member.role);

 
 

-       function abortUnwantedRequests(cache, tiles) {
-         Object.keys(cache.inflightTile).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k === tile.id;
-           });
+           if ((isNaN(memberIndex) || insertPair) && member.type === 'way' && !isPTv2) {
+             // Try to perform sensible inserts based on how the ways join together
+             graph = addWayMember(relation, graph);
+           } else {
+             // see https://wiki.openstreetmap.org/wiki/Public_transport#Service_routes
+             // Stops and Platforms for PTv2 should be ordered first.
+             // hack: We do not currently have the ability to place them in the exactly correct order.
+             if (isPTv2 && isNaN(memberIndex)) {
+               memberIndex = 0;
+             }

 
 

-           if (!wanted) {
-             abortRequest(cache.inflightTile[k]);
-             delete cache.inflightTile[k];
+             graph = graph.replace(relation.addMember(member, memberIndex));

            }
            }

-         });
-       }

 
 

-       function encodeIssueRtree(d) {
-         return {
-           minX: d.loc[0],
-           minY: d.loc[1],
-           maxX: d.loc[0],
-           maxY: d.loc[1],
-           data: d
-         };
-       } // Replace or remove QAItem from rtree
+           return graph;
+         }; // Add a way member into the relation "wherever it makes sense".
+         // In this situation we were not supplied a memberIndex.

 
 

+         function addWayMember(relation, graph) {
+           var groups, tempWay, item, i, j, k; // remove PTv2 stops and platforms before doing anything.

 
 

-       function updateRtree(item, replace) {
-         _cache.rtree.remove(item, function (a, b) {
-           return a.data.id === b.data.id;
-         });
+           var PTv2members = [];
+           var members = [];

 
 

-         if (replace) {
-           _cache.rtree.insert(item);
-         }
-       }
+           for (i = 0; i < relation.members.length; i++) {
+             var m = relation.members[i];

 
 

-       function tokenReplacements(d) {
-         if (!(d instanceof QAItem)) return;
-         var htmlRegex = new RegExp(/<\/[a-z][\s\S]*>/);
-         var replacements = {};
-         var issueTemplate = _krData.errorTypes[d.whichType];
+             if (/stop|platform/.test(m.role)) {
+               PTv2members.push(m);
+             } else {
+               members.push(m);
+             }
+           }

 
 

-         if (!issueTemplate) {
-           /* eslint-disable no-console */
-           console.log('No Template: ', d.whichType);
-           console.log('  ', d.description);
-           /* eslint-enable no-console */
+           relation = relation.update({
+             members: members
+           });

 
 

-           return;
-         } // some descriptions are just fixed text
+           if (insertPair) {
+             // We're adding a member that must stay paired with an existing member.
+             // (This feature is used by `actionSplit`)
+             //
+             // This is tricky because the members may exist multiple times in the
+             // member list, and with different A-B/B-A ordering and different roles.
+             // (e.g. a bus route that loops out and back - #4589).
+             //
+             // Replace the existing member with a temporary way,
+             // so that `osmJoinWays` can treat the pair like a single way.
+             tempWay = osmWay({
+               id: 'wTemp',
+               nodes: insertPair.nodes
+             });
+             graph = graph.replace(tempWay);
+             var tempMember = {
+               id: tempWay.id,
+               type: 'way',
+               role: member.role
+             };
+             var tempRelation = relation.replaceMember({
+               id: insertPair.originalID
+             }, tempMember, true);
+             groups = utilArrayGroupBy(tempRelation.members, 'type');
+             groups.way = groups.way || [];
+           } else {
+             // Add the member anywhere, one time. Just push and let `osmJoinWays` decide where to put it.
+             groups = utilArrayGroupBy(relation.members, 'type');
+             groups.way = groups.way || [];
+             groups.way.push(member);
+           }

 
 

+           members = withIndex(groups.way);
+           var joined = osmJoinWays(members, graph); // `joined` might not contain all of the way members,
+           // But will contain only the completed (downloaded) members

 
 

-         if (!issueTemplate.regex) return; // regex pattern should match description with variable details captured
+           for (i = 0; i < joined.length; i++) {
+             var segment = joined[i];
+             var nodes = segment.nodes.slice();
+             var startIndex = segment[0].index; // j = array index in `members` where this segment starts

 
 

-         var errorRegex = new RegExp(issueTemplate.regex, 'i');
-         var errorMatch = errorRegex.exec(d.description);
+             for (j = 0; j < members.length; j++) {
+               if (members[j].index === startIndex) {
+                 break;
+               }
+             } // k = each member in segment

 
 

-         if (!errorMatch) {
-           /* eslint-disable no-console */
-           console.log('Unmatched: ', d.whichType);
-           console.log('  ', d.description);
-           console.log('  ', errorRegex);
-           /* eslint-enable no-console */

 
 

-           return;
-         }
+             for (k = 0; k < segment.length; k++) {
+               item = segment[k];
+               var way = graph.entity(item.id); // If this is a paired item, generate members in correct order and role

 
 

-         for (var i = 1; i < errorMatch.length; i++) {
-           // skip first
-           var capture = errorMatch[i];
-           var idType = void 0;
-           idType = 'IDs' in issueTemplate ? issueTemplate.IDs[i - 1] : '';
+               if (tempWay && item.id === tempWay.id) {
+                 if (nodes[0].id === insertPair.nodes[0]) {
+                   item.pair = [{
+                     id: insertPair.originalID,
+                     type: 'way',
+                     role: item.role
+                   }, {
+                     id: insertPair.insertedID,
+                     type: 'way',
+                     role: item.role
+                   }];
+                 } else {
+                   item.pair = [{
+                     id: insertPair.insertedID,
+                     type: 'way',
+                     role: item.role
+                   }, {
+                     id: insertPair.originalID,
+                     type: 'way',
+                     role: item.role
+                   }];
+                 }
+               } // reorder `members` if necessary

 
 

-           if (idType && capture) {
-             // link IDs if present in the capture
-             capture = parseError(capture, idType);
-           } else if (htmlRegex.test(capture)) {
-             // escape any html in non-IDs
-             capture = '\\' + capture + '\\';
-           } else {
-             var compare = capture.toLowerCase();

 
 

-             if (_krData.localizeStrings[compare]) {
-               // some replacement strings can be localized
-               capture = _t('QA.keepRight.error_parts.' + _krData.localizeStrings[compare]);
+               if (k > 0) {
+                 if (j + k >= members.length || item.index !== members[j + k].index) {
+                   moveMember(members, item.index, j + k);
+                 }
+               }
+
+               nodes.splice(0, way.nodes.length - 1);

              }
            }
 
              }
            }
 

-           replacements['var' + i] = capture;
-         }
-
-         return replacements;
-       }
-
-       function parseError(capture, idType) {
-         var compare = capture.toLowerCase();
-
-         if (_krData.localizeStrings[compare]) {
-           // some replacement strings can be localized
-           capture = _t('QA.keepRight.error_parts.' + _krData.localizeStrings[compare]);
-         }
-
-         switch (idType) {
-           // link a string like "this node"
-           case 'this':
-             capture = linkErrorObject(capture);
-             break;
-
-           case 'url':
-             capture = linkURL(capture);
-             break;
-           // link an entity ID
-
-           case 'n':
-           case 'w':
-           case 'r':
-             capture = linkEntity(idType + capture);
-             break;
-           // some errors have more complex ID lists/variance
+           if (tempWay) {
+             graph = graph.remove(tempWay);
+           } // Final pass: skip dead items, split pairs, remove index properties

 
 

-           case '20':
-             capture = parse20(capture);
-             break;

 
 

-           case '211':
-             capture = parse211(capture);
-             break;
+           var wayMembers = [];

 
 

-           case '231':
-             capture = parse231(capture);
-             break;
+           for (i = 0; i < members.length; i++) {
+             item = members[i];
+             if (item.index === -1) continue;

 
 

-           case '294':
-             capture = parse294(capture);
-             break;
+             if (item.pair) {
+               wayMembers.push(item.pair[0]);
+               wayMembers.push(item.pair[1]);
+             } else {
+               wayMembers.push(utilObjectOmit(item, ['index']));
+             }
+           } // Put stops and platforms first, then nodes, ways, relations
+           // This is recommended for Public Transport v2 routes:
+           // see https://wiki.openstreetmap.org/wiki/Public_transport#Service_routes

 
 

-           case '370':
-             capture = parse370(capture);
-             break;
-         }

 
 

-         return capture;
+           var newMembers = PTv2members.concat(groups.node || [], wayMembers, groups.relation || []);
+           return graph.replace(relation.update({
+             members: newMembers
+           })); // `moveMember()` changes the `members` array in place by splicing
+           // the item with `.index = findIndex` to where it belongs,
+           // and marking the old position as "dead" with `.index = -1`
+           //
+           // j=5, k=0                jk
+           // segment                 5 4 7 6
+           // members       0 1 2 3 4 5 6 7 8 9        keep 5 in j+k
+           //
+           // j=5, k=1                j k
+           // segment                 5 4 7 6
+           // members       0 1 2 3 4 5 6 7 8 9        move 4 to j+k
+           // members       0 1 2 3 x 5 4 6 7 8 9      moved
+           //
+           // j=5, k=2                j   k
+           // segment                 5 4 7 6
+           // members       0 1 2 3 x 5 4 6 7 8 9      move 7 to j+k
+           // members       0 1 2 3 x 5 4 7 6 x 8 9    moved
+           //
+           // j=5, k=3                j     k
+           // segment                 5 4 7 6
+           // members       0 1 2 3 x 5 4 7 6 x 8 9    keep 6 in j+k
+           //

 
 

-         function linkErrorObject(d) {
-           return "<a class=\"error_object_link\">".concat(d, "</a>");
-         }
+           function moveMember(arr, findIndex, toIndex) {
+             var i;

 
 

-         function linkEntity(d) {
-           return "<a class=\"error_entity_link\">".concat(d, "</a>");
-         }
+             for (i = 0; i < arr.length; i++) {
+               if (arr[i].index === findIndex) {
+                 break;
+               }
+             }

 
 

-         function linkURL(d) {
-           return "<a class=\"kr_external_link\" target=\"_blank\" href=\"".concat(d, "\">").concat(d, "</a>");
-         } // arbitrary node list of form: #ID, #ID, #ID...
+             var item = Object.assign({}, arr[i]); // shallow copy

 
 

+             arr[i].index = -1; // mark as dead

 
 

-         function parse211(capture) {
-           var newList = [];
-           var items = capture.split(', ');
-           items.forEach(function (item) {
-             // ID has # at the front
-             var id = linkEntity('n' + item.slice(1));
-             newList.push(id);
-           });
-           return newList.join(', ');
-         } // arbitrary way list of form: #ID(layer),#ID(layer),#ID(layer)...
+             item.index = toIndex;
+             arr.splice(toIndex, 0, item);
+           } // This is the same as `Relation.indexedMembers`,
+           // Except we don't want to index all the members, only the ways

 
 
 
 

-         function parse231(capture) {
-           var newList = []; // unfortunately 'layer' can itself contain commas, so we split on '),'
+           function withIndex(arr) {
+             var result = new Array(arr.length);

 
 

-           var items = capture.split('),');
-           items.forEach(function (item) {
-             var match = item.match(/\#(\d+)\((.+)\)?/);
+             for (var i = 0; i < arr.length; i++) {
+               result[i] = Object.assign({}, arr[i]); // shallow copy

 
 

-             if (match !== null && match.length > 2) {
-               newList.push(linkEntity('w' + match[1]) + ' ' + _t('QA.keepRight.errorTypes.231.layer', {
-                 layer: match[2]
-               }));
+               result[i].index = i;

              }
              }

-           });
-           return newList.join(', ');
-         } // arbitrary node/relation list of form: from node #ID,to relation #ID,to node #ID...
-
-
-         function parse294(capture) {
-           var newList = [];
-           var items = capture.split(',');
-           items.forEach(function (item) {
-             // item of form "from/to node/relation #ID"
-             item = item.split(' '); // to/from role is more clear in quotes

 
 

-             var role = "\"".concat(item[0], "\""); // first letter of node/relation provides the type
+             return result;
+           }
+         }
+       }

 
 

-             var idType = item[1].slice(0, 1); // ID has # at the front
+       function actionAddMidpoint(midpoint, node) {
+         return function (graph) {
+           graph = graph.replace(node.move(midpoint.loc));
+           var parents = utilArrayIntersection(graph.parentWays(graph.entity(midpoint.edge[0])), graph.parentWays(graph.entity(midpoint.edge[1])));
+           parents.forEach(function (way) {
+             for (var i = 0; i < way.nodes.length - 1; i++) {
+               if (geoEdgeEqual([way.nodes[i], way.nodes[i + 1]], midpoint.edge)) {
+                 graph = graph.replace(graph.entity(way.id).addNode(node.id, i + 1)); // Add only one midpoint on doubled-back segments,
+                 // turning them into self-intersections.

 
 

-             var id = item[2].slice(1);
-             id = linkEntity(idType + id);
-             newList.push("".concat(role, " ").concat(item[1], " ").concat(id));
+                 return;
+               }
+             }

            });
            });

-           return newList.join(', ');
-         } // may or may not include the string "(including the name 'name')"
+           return graph;
+         };
+       }

 
 

+       // https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/AddNodeToWayAction.as
+       function actionAddVertex(wayId, nodeId, index) {
+         return function (graph) {
+           return graph.replace(graph.entity(wayId).addNode(nodeId, index));
+         };
+       }

 
 

-         function parse370(capture) {
-           if (!capture) return '';
-           var match = capture.match(/\(including the name (\'.+\')\)/);
+       function actionChangeMember(relationId, member, memberIndex) {
+         return function (graph) {
+           return graph.replace(graph.entity(relationId).updateMember(member, memberIndex));
+         };
+       }

 
 

-           if (match && match.length) {
-             return _t('QA.keepRight.errorTypes.370.including_the_name', {
-               name: match[1]
-             });
-           }
+       function actionChangePreset(entityID, oldPreset, newPreset, skipFieldDefaults) {
+         return function action(graph) {
+           var entity = graph.entity(entityID);
+           var geometry = entity.geometry(graph);
+           var tags = entity.tags; // preserve tags that the new preset might care about, if any

 
 

-           return '';
-         } // arbitrary node list of form: #ID,#ID,#ID...
+           if (oldPreset) tags = oldPreset.unsetTags(tags, geometry, newPreset && newPreset.addTags ? Object.keys(newPreset.addTags) : null);
+           if (newPreset) tags = newPreset.setTags(tags, geometry, skipFieldDefaults);
+           return graph.replace(entity.update({
+             tags: tags
+           }));
+         };
+       }

 
 

+       function actionChangeTags(entityId, tags) {
+         return function (graph) {
+           var entity = graph.entity(entityId);
+           return graph.replace(entity.update({
+             tags: tags
+           }));
+         };
+       }

 
 

-         function parse20(capture) {
-           var newList = [];
-           var items = capture.split(',');
-           items.forEach(function (item) {
-             // ID has # at the front
-             var id = linkEntity('n' + item.slice(1));
-             newList.push(id);
-           });
-           return newList.join(', ');
+       function osmNode() {
+         if (!(this instanceof osmNode)) {
+           return new osmNode().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);

          }
        }
          }
        }

-
-       var serviceKeepRight = {
-         title: 'keepRight',
-         init: function init() {
-           _mainFileFetcher.get('keepRight').then(function (d) {
-             return _krData = d;
+       osmEntity.node = osmNode;
+       osmNode.prototype = Object.create(osmEntity.prototype);
+       Object.assign(osmNode.prototype, {
+         type: 'node',
+         loc: [9999, 9999],
+         extent: function extent() {
+           return new geoExtent(this.loc);
+         },
+         geometry: function geometry(graph) {
+           return graph["transient"](this, 'geometry', function () {
+             return graph.isPoi(this) ? 'point' : 'vertex';

            });
            });

-
-           if (!_cache) {
-             this.reset();
-           }
-
-           this.event = utilRebind(this, dispatch$1, 'on');

          },
          },

-         reset: function reset() {
-           if (_cache) {
-             Object.values(_cache.inflightTile).forEach(abortRequest);
-           }
-
-           _cache = {
-             data: {},
-             loadedTile: {},
-             inflightTile: {},
-             inflightPost: {},
-             closed: {},
-             rtree: new RBush()
-           };
+         move: function move(loc) {
+           return this.update({
+             loc: loc
+           });

          },
          },

-         // KeepRight API:  http://osm.mueschelsoft.de/keepright/interfacing.php
-         loadIssues: function loadIssues(projection) {
-           var _this = this;
-
-           var options = {
-             format: 'geojson',
-             ch: _krRuleset
-           }; // determine the needed tiles to cover the view
-
-           var tiles = tiler.zoomExtent([_tileZoom, _tileZoom]).getTiles(projection); // abort inflight requests that are no longer needed
-
-           abortUnwantedRequests(_cache, tiles); // issue new requests..
-
-           tiles.forEach(function (tile) {
-             if (_cache.loadedTile[tile.id] || _cache.inflightTile[tile.id]) return;
+         isDegenerate: function isDegenerate() {
+           return !(Array.isArray(this.loc) && this.loc.length === 2 && this.loc[0] >= -180 && this.loc[0] <= 180 && this.loc[1] >= -90 && this.loc[1] <= 90);
+         },
+         // Inspect tags and geometry to determine which direction(s) this node/vertex points
+         directions: function directions(resolver, projection) {
+           var val;
+           var i; // which tag to use?

 
 

-             var _tile$extent$rectangl = tile.extent.rectangle(),
-                 _tile$extent$rectangl2 = _slicedToArray(_tile$extent$rectangl, 4),
-                 left = _tile$extent$rectangl2[0],
-                 top = _tile$extent$rectangl2[1],
-                 right = _tile$extent$rectangl2[2],
-                 bottom = _tile$extent$rectangl2[3];
+           if (this.isHighwayIntersection(resolver) && (this.tags.stop || '').toLowerCase() === 'all') {
+             // all-way stop tag on a highway intersection
+             val = 'all';
+           } else {
+             // generic direction tag
+             val = (this.tags.direction || '').toLowerCase(); // better suffix-style direction tag

 
 

-             var params = Object.assign({}, options, {
-               left: left,
-               bottom: bottom,
-               right: right,
-               top: top
-             });
-             var url = "".concat(_krUrlRoot, "/export.php?") + utilQsString(params);
-             var controller = new AbortController();
-             _cache.inflightTile[tile.id] = controller;
-             d3_json(url, {
-               signal: controller.signal
-             }).then(function (data) {
-               delete _cache.inflightTile[tile.id];
-               _cache.loadedTile[tile.id] = true;
+             var re = /:direction$/i;
+             var keys = Object.keys(this.tags);

 
 

-               if (!data || !data.features || !data.features.length) {
-                 throw new Error('No Data');
+             for (i = 0; i < keys.length; i++) {
+               if (re.test(keys[i])) {
+                 val = this.tags[keys[i]].toLowerCase();
+                 break;

                }
                }

+             }
+           }

 
 

-               data.features.forEach(function (feature) {
-                 var _feature$properties = feature.properties,
-                     itemType = _feature$properties.error_type,
-                     id = _feature$properties.error_id,
-                     _feature$properties$c = _feature$properties.comment,
-                     comment = _feature$properties$c === void 0 ? null : _feature$properties$c,
-                     objectId = _feature$properties.object_id,
-                     objectType = _feature$properties.object_type,
-                     schema = _feature$properties.schema,
-                     title = _feature$properties.title;
-                 var loc = feature.geometry.coordinates,
-                     _feature$properties$d = feature.properties.description,
-                     description = _feature$properties$d === void 0 ? '' : _feature$properties$d; // if there is a parent, save its error type e.g.:
-                 //  Error 191 = "highway-highway"
-                 //  Error 190 = "intersections without junctions"  (parent)
-
-                 var issueTemplate = _krData.errorTypes[itemType];
-                 var parentIssueType = (Math.floor(itemType / 10) * 10).toString(); // try to handle error type directly, fallback to parent error type.
+           if (val === '') return [];
+           var cardinal = {
+             north: 0,
+             n: 0,
+             northnortheast: 22,
+             nne: 22,
+             northeast: 45,
+             ne: 45,
+             eastnortheast: 67,
+             ene: 67,
+             east: 90,
+             e: 90,
+             eastsoutheast: 112,
+             ese: 112,
+             southeast: 135,
+             se: 135,
+             southsoutheast: 157,
+             sse: 157,
+             south: 180,
+             s: 180,
+             southsouthwest: 202,
+             ssw: 202,
+             southwest: 225,
+             sw: 225,
+             westsouthwest: 247,
+             wsw: 247,
+             west: 270,
+             w: 270,
+             westnorthwest: 292,
+             wnw: 292,
+             northwest: 315,
+             nw: 315,
+             northnorthwest: 337,
+             nnw: 337
+           };
+           var values = val.split(';');
+           var results = [];
+           values.forEach(function (v) {
+             // swap cardinal for numeric directions
+             if (cardinal[v] !== undefined) {
+               v = cardinal[v];
+             } // numeric direction - just add to results

 
 

-                 var whichType = issueTemplate ? itemType : parentIssueType;
-                 var whichTemplate = _krData.errorTypes[whichType]; // Rewrite a few of the errors at this point..
-                 // This is done to make them easier to linkify and translate.

 
 

-                 switch (whichType) {
-                   case '170':
-                     description = "This feature has a FIXME tag: ".concat(description);
-                     break;
+             if (v !== '' && !isNaN(+v)) {
+               results.push(+v);
+               return;
+             } // string direction - inspect parent ways

 
 

-                   case '292':
-                   case '293':
-                     description = description.replace('A turn-', 'This turn-');
-                     break;

 
 

-                   case '294':
-                   case '295':
-                   case '296':
-                   case '297':
-                   case '298':
-                     description = "This turn-restriction~".concat(description);
-                     break;
+             var lookBackward = this.tags['traffic_sign:backward'] || v === 'backward' || v === 'both' || v === 'all';
+             var lookForward = this.tags['traffic_sign:forward'] || v === 'forward' || v === 'both' || v === 'all';
+             if (!lookForward && !lookBackward) return;
+             var nodeIds = {};
+             resolver.parentWays(this).forEach(function (parent) {
+               var nodes = parent.nodes;

 
 

-                   case '300':
-                     description = 'This highway is missing a maxspeed tag';
-                     break;
+               for (i = 0; i < nodes.length; i++) {
+                 if (nodes[i] === this.id) {
+                   // match current entity
+                   if (lookForward && i > 0) {
+                     nodeIds[nodes[i - 1]] = true; // look back to prev node
+                   }

 
 

-                   case '411':
-                   case '412':
-                   case '413':
-                     description = "This feature~".concat(description);
-                     break;
-                 } // move markers slightly so it doesn't obscure the geometry,
-                 // then move markers away from other coincident markers
+                   if (lookBackward && i < nodes.length - 1) {
+                     nodeIds[nodes[i + 1]] = true; // look ahead to next node
+                   }
+                 }
+               }
+             }, this);
+             Object.keys(nodeIds).forEach(function (nodeId) {
+               // +90 because geoAngle returns angle from X axis, not Y (north)
+               results.push(geoAngle(this, resolver.entity(nodeId), projection) * (180 / Math.PI) + 90);
+             }, this);
+           }, this);
+           return utilArrayUniq(results);
+         },
+         isCrossing: function isCrossing() {
+           return this.tags.highway === 'crossing' || this.tags.railway && this.tags.railway.indexOf('crossing') !== -1;
+         },
+         isEndpoint: function isEndpoint(resolver) {
+           return resolver["transient"](this, 'isEndpoint', function () {
+             var id = this.id;
+             return resolver.parentWays(this).filter(function (parent) {
+               return !parent.isClosed() && !!parent.affix(id);
+             }).length > 0;
+           });
+         },
+         isConnected: function isConnected(resolver) {
+           return resolver["transient"](this, 'isConnected', function () {
+             var parents = resolver.parentWays(this);

 
 

+             if (parents.length > 1) {
+               // vertex is connected to multiple parent ways
+               for (var i in parents) {
+                 if (parents[i].geometry(resolver) === 'line' && parents[i].hasInterestingTags()) return true;
+               }
+             } else if (parents.length === 1) {
+               var way = parents[0];
+               var nodes = way.nodes.slice();

 
 

-                 var coincident = false;
+               if (way.isClosed()) {
+                 nodes.pop();
+               } // ignore connecting node if closed
+               // return true if vertex appears multiple times (way is self intersecting)

 
 

-                 do {
-                   // first time, move marker up. after that, move marker right.
-                   var delta = coincident ? [0.00001, 0] : [0, 0.00001];
-                   loc = geoVecAdd(loc, delta);
-                   var bbox = geoExtent(loc).bbox();
-                   coincident = _cache.rtree.search(bbox).length;
-                 } while (coincident);

 
 

-                 var d = new QAItem(loc, _this, itemType, id, {
-                   comment: comment,
-                   description: description,
-                   whichType: whichType,
-                   parentIssueType: parentIssueType,
-                   severity: whichTemplate.severity || 'error',
-                   objectId: objectId,
-                   objectType: objectType,
-                   schema: schema,
-                   title: title
-                 });
-                 d.replacements = tokenReplacements(d);
-                 _cache.data[id] = d;
+               return nodes.indexOf(this.id) !== nodes.lastIndexOf(this.id);
+             }

 
 

-                 _cache.rtree.insert(encodeIssueRtree(d));
-               });
-               dispatch$1.call('loaded');
-             })["catch"](function () {
-               delete _cache.inflightTile[tile.id];
-               _cache.loadedTile[tile.id] = true;
+             return false;
+           });
+         },
+         parentIntersectionWays: function parentIntersectionWays(resolver) {
+           return resolver["transient"](this, 'parentIntersectionWays', function () {
+             return resolver.parentWays(this).filter(function (parent) {
+               return (parent.tags.highway || parent.tags.waterway || parent.tags.railway || parent.tags.aeroway) && parent.geometry(resolver) === 'line';

              });
            });
          },
              });
            });
          },

-         postUpdate: function postUpdate(d, callback) {
-           var _this2 = this;
+         isIntersection: function isIntersection(resolver) {
+           return this.parentIntersectionWays(resolver).length > 1;
+         },
+         isHighwayIntersection: function isHighwayIntersection(resolver) {
+           return resolver["transient"](this, 'isHighwayIntersection', function () {
+             return resolver.parentWays(this).filter(function (parent) {
+               return parent.tags.highway && parent.geometry(resolver) === 'line';
+             }).length > 1;
+           });
+         },
+         isOnAddressLine: function isOnAddressLine(resolver) {
+           return resolver["transient"](this, 'isOnAddressLine', function () {
+             return resolver.parentWays(this).filter(function (parent) {
+               return parent.tags.hasOwnProperty('addr:interpolation') && parent.geometry(resolver) === 'line';
+             }).length > 0;
+           });
+         },
+         asJXON: function asJXON(changeset_id) {
+           var r = {
+             node: {
+               '@id': this.osmId(),
+               '@lon': this.loc[0],
+               '@lat': this.loc[1],
+               '@version': this.version || 0,
+               tag: Object.keys(this.tags).map(function (k) {
+                 return {
+                   keyAttributes: {
+                     k: k,
+                     v: this.tags[k]
+                   }
+                 };
+               }, this)
+             }
+           };
+           if (changeset_id) r.node['@changeset'] = changeset_id;
+           return r;
+         },
+         asGeoJSON: function asGeoJSON() {
+           return {
+             type: 'Point',
+             coordinates: this.loc
+           };
+         }
+       });

 
 

-           if (_cache.inflightPost[d.id]) {
-             return callback({
-               message: 'Error update already inflight',
-               status: -2
-             }, d);
+       function actionCircularize(wayId, projection, maxAngle) {
+         maxAngle = (maxAngle || 20) * Math.PI / 180;
+
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var way = graph.entity(wayId);
+           var origNodes = {};
+           graph.childNodes(way).forEach(function (node) {
+             if (!origNodes[node.id]) origNodes[node.id] = node;
+           });
+
+           if (!way.isConvex(graph)) {
+             graph = action.makeConvex(graph);

            }
 
            }
 

-           var params = {
-             schema: d.schema,
-             id: d.id
-           };
+           var nodes = utilArrayUniq(graph.childNodes(way));
+           var keyNodes = nodes.filter(function (n) {
+             return graph.parentWays(n).length !== 1;
+           });
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var keyPoints = keyNodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var centroid = points.length === 2 ? geoVecInterp(points[0], points[1], 0.5) : d3_polygonCentroid(points);
+           var radius = d3_median(points, function (p) {
+             return geoVecLength(centroid, p);
+           });
+           var sign = d3_polygonArea(points) > 0 ? 1 : -1;
+           var ids, i, j, k; // we need at least two key nodes for the algorithm to work

 
 

-           if (d.newStatus) {
-             params.st = d.newStatus;
+           if (!keyNodes.length) {
+             keyNodes = [nodes[0]];
+             keyPoints = [points[0]];

            }
 
            }
 

-           if (d.newComment !== undefined) {
-             params.co = d.newComment;
-           } // NOTE: This throws a CORS err, but it seems successful.
-           // We don't care too much about the response, so this is fine.
+           if (keyNodes.length === 1) {
+             var index = nodes.indexOf(keyNodes[0]);
+             var oppositeIndex = Math.floor((index + nodes.length / 2) % nodes.length);
+             keyNodes.push(nodes[oppositeIndex]);
+             keyPoints.push(points[oppositeIndex]);
+           } // key points and nodes are those connected to the ways,
+           // they are projected onto the circle, in between nodes are moved
+           // to constant intervals between key nodes, extra in between nodes are
+           // added if necessary.

 
 
 
 

-           var url = "".concat(_krUrlRoot, "/comment.php?") + utilQsString(params);
-           var controller = new AbortController();
-           _cache.inflightPost[d.id] = controller; // Since this is expected to throw an error just continue as if it worked
-           // (worst case scenario the request truly fails and issue will show up if iD restarts)
+           for (i = 0; i < keyPoints.length; i++) {
+             var nextKeyNodeIndex = (i + 1) % keyNodes.length;
+             var startNode = keyNodes[i];
+             var endNode = keyNodes[nextKeyNodeIndex];
+             var startNodeIndex = nodes.indexOf(startNode);
+             var endNodeIndex = nodes.indexOf(endNode);
+             var numberNewPoints = -1;
+             var indexRange = endNodeIndex - startNodeIndex;
+             var nearNodes = {};
+             var inBetweenNodes = [];
+             var startAngle, endAngle, totalAngle, eachAngle;
+             var angle, loc, node, origNode;

 
 

-           d3_json(url, {
-             signal: controller.signal
-           })["finally"](function () {
-             delete _cache.inflightPost[d.id];
+             if (indexRange < 0) {
+               indexRange += nodes.length;
+             } // position this key node

 
 

-             if (d.newStatus === 'ignore') {
-               // ignore permanently (false positive)
-               _this2.removeItem(d);
-             } else if (d.newStatus === 'ignore_t') {
-               // ignore temporarily (error fixed)
-               _this2.removeItem(d);

 
 

-               _cache.closed["".concat(d.schema, ":").concat(d.id)] = true;
-             } else {
-               d = _this2.replaceItem(d.update({
-                 comment: d.newComment,
-                 newComment: undefined,
-                 newState: undefined
-               }));
-             }
+             var distance = geoVecLength(centroid, keyPoints[i]) || 1e-4;
+             keyPoints[i] = [centroid[0] + (keyPoints[i][0] - centroid[0]) / distance * radius, centroid[1] + (keyPoints[i][1] - centroid[1]) / distance * radius];
+             loc = projection.invert(keyPoints[i]);
+             node = keyNodes[i];
+             origNode = origNodes[node.id];
+             node = node.move(geoVecInterp(origNode.loc, loc, t));
+             graph = graph.replace(node); // figure out the between delta angle we want to match to

 
 

-             if (callback) callback(null, d);
-           });
-         },
-         // Get all cached QAItems covering the viewport
-         getItems: function getItems(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           return _cache.rtree.search(bbox).map(function (d) {
-             return d.data;
-           });
-         },
-         // Get a QAItem from cache
-         // NOTE: Don't change method name until UI v3 is merged
-         getError: function getError(id) {
-           return _cache.data[id];
-         },
-         // Replace a single QAItem in the cache
-         replaceItem: function replaceItem(item) {
-           if (!(item instanceof QAItem) || !item.id) return;
-           _cache.data[item.id] = item;
-           updateRtree(encodeIssueRtree(item), true); // true = replace
+             startAngle = Math.atan2(keyPoints[i][1] - centroid[1], keyPoints[i][0] - centroid[0]);
+             endAngle = Math.atan2(keyPoints[nextKeyNodeIndex][1] - centroid[1], keyPoints[nextKeyNodeIndex][0] - centroid[0]);
+             totalAngle = endAngle - startAngle; // detects looping around -pi/pi

 
 

-           return item;
-         },
-         // Remove a single QAItem from the cache
-         removeItem: function removeItem(item) {
-           if (!(item instanceof QAItem) || !item.id) return;
-           delete _cache.data[item.id];
-           updateRtree(encodeIssueRtree(item), false); // false = remove
-         },
-         issueURL: function issueURL(item) {
-           return "".concat(_krUrlRoot, "/report_map.php?schema=").concat(item.schema, "&error=").concat(item.id);
-         },
-         // Get an array of issues closed during this session.
-         // Used to populate `closed:keepright` changeset tag
-         getClosedIDs: function getClosedIDs() {
-           return Object.keys(_cache.closed).sort();
-         }
-       };
+             if (totalAngle * sign > 0) {
+               totalAngle = -sign * (2 * Math.PI - Math.abs(totalAngle));
+             }

 
 

-       var tiler$1 = utilTiler();
-       var dispatch$2 = dispatch('loaded');
-       var _tileZoom$1 = 14;
-       var _impOsmUrls = {
-         ow: 'https://grab.community.improve-osm.org/directionOfFlowService',
-         mr: 'https://grab.community.improve-osm.org/missingGeoService',
-         tr: 'https://grab.community.improve-osm.org/turnRestrictionService'
-       };
-       var _impOsmData = {
-         icons: {}
-       }; // This gets reassigned if reset
+             do {
+               numberNewPoints++;
+               eachAngle = totalAngle / (indexRange + numberNewPoints);
+             } while (Math.abs(eachAngle) > maxAngle); // move existing nodes

 
 

-       var _cache$1;

 
 

-       function abortRequest$1(i) {
-         Object.values(i).forEach(function (controller) {
-           if (controller) {
-             controller.abort();
-           }
-         });
-       }
+             for (j = 1; j < indexRange; j++) {
+               angle = startAngle + j * eachAngle;
+               loc = projection.invert([centroid[0] + Math.cos(angle) * radius, centroid[1] + Math.sin(angle) * radius]);
+               node = nodes[(j + startNodeIndex) % nodes.length];
+               origNode = origNodes[node.id];
+               nearNodes[node.id] = angle;
+               node = node.move(geoVecInterp(origNode.loc, loc, t));
+               graph = graph.replace(node);
+             } // add new in between nodes if necessary

 
 

-       function abortUnwantedRequests$1(cache, tiles) {
-         Object.keys(cache.inflightTile).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k === tile.id;
-           });

 
 

-           if (!wanted) {
-             abortRequest$1(cache.inflightTile[k]);
-             delete cache.inflightTile[k];
-           }
-         });
-       }
+             for (j = 0; j < numberNewPoints; j++) {
+               angle = startAngle + (indexRange + j) * eachAngle;
+               loc = projection.invert([centroid[0] + Math.cos(angle) * radius, centroid[1] + Math.sin(angle) * radius]); // choose a nearnode to use as the original

 
 

-       function encodeIssueRtree$1(d) {
-         return {
-           minX: d.loc[0],
-           minY: d.loc[1],
-           maxX: d.loc[0],
-           maxY: d.loc[1],
-           data: d
-         };
-       } // Replace or remove QAItem from rtree
+               var min = Infinity;

 
 

+               for (var nodeId in nearNodes) {
+                 var nearAngle = nearNodes[nodeId];
+                 var dist = Math.abs(nearAngle - angle);

 
 

-       function updateRtree$1(item, replace) {
-         _cache$1.rtree.remove(item, function (a, b) {
-           return a.data.id === b.data.id;
-         });
+                 if (dist < min) {
+                   min = dist;
+                   origNode = origNodes[nodeId];
+                 }
+               }

 
 

-         if (replace) {
-           _cache$1.rtree.insert(item);
-         }
-       }
+               node = osmNode({
+                 loc: geoVecInterp(origNode.loc, loc, t)
+               });
+               graph = graph.replace(node);
+               nodes.splice(endNodeIndex + j, 0, node);
+               inBetweenNodes.push(node.id);
+             } // Check for other ways that share these keyNodes..
+             // If keyNodes are adjacent in both ways,
+             // we can add inBetweenNodes to that shared way too..

 
 

-       function linkErrorObject(d) {
-         return "<a class=\"error_object_link\">".concat(d, "</a>");
-       }

 
 

-       function linkEntity(d) {
-         return "<a class=\"error_entity_link\">".concat(d, "</a>");
-       }
+             if (indexRange === 1 && inBetweenNodes.length) {
+               var startIndex1 = way.nodes.lastIndexOf(startNode.id);
+               var endIndex1 = way.nodes.lastIndexOf(endNode.id);
+               var wayDirection1 = endIndex1 - startIndex1;

 
 

-       function pointAverage(points) {
-         if (points.length) {
-           var sum = points.reduce(function (acc, point) {
-             return geoVecAdd(acc, [point.lon, point.lat]);
-           }, [0, 0]);
-           return geoVecScale(sum, 1 / points.length);
-         } else {
-           return [0, 0];
-         }
-       }
+               if (wayDirection1 < -1) {
+                 wayDirection1 = 1;
+               }

 
 

-       function relativeBearing(p1, p2) {
-         var angle = Math.atan2(p2.lon - p1.lon, p2.lat - p1.lat);
+               var parentWays = graph.parentWays(keyNodes[i]);

 
 

-         if (angle < 0) {
-           angle += 2 * Math.PI;
-         } // Return degrees
+               for (j = 0; j < parentWays.length; j++) {
+                 var sharedWay = parentWays[j];
+                 if (sharedWay === way) continue;

 
 

+                 if (sharedWay.areAdjacent(startNode.id, endNode.id)) {
+                   var startIndex2 = sharedWay.nodes.lastIndexOf(startNode.id);
+                   var endIndex2 = sharedWay.nodes.lastIndexOf(endNode.id);
+                   var wayDirection2 = endIndex2 - startIndex2;
+                   var insertAt = endIndex2;

 
 

-         return angle * 180 / Math.PI;
-       } // Assuming range [0,360)
+                   if (wayDirection2 < -1) {
+                     wayDirection2 = 1;
+                   }

 
 

+                   if (wayDirection1 !== wayDirection2) {
+                     inBetweenNodes.reverse();
+                     insertAt = startIndex2;
+                   }

 
 

-       function cardinalDirection(bearing) {
-         var dir = 45 * Math.round(bearing / 45);
-         var compass = {
-           0: 'north',
-           45: 'northeast',
-           90: 'east',
-           135: 'southeast',
-           180: 'south',
-           225: 'southwest',
-           270: 'west',
-           315: 'northwest',
-           360: 'north'
+                   for (k = 0; k < inBetweenNodes.length; k++) {
+                     sharedWay = sharedWay.addNode(inBetweenNodes[k], insertAt + k);
+                   }
+
+                   graph = graph.replace(sharedWay);
+                 }
+               }
+             }
+           } // update the way to have all the new nodes
+
+
+           ids = nodes.map(function (n) {
+             return n.id;
+           });
+           ids.push(ids[0]);
+           way = way.update({
+             nodes: ids
+           });
+           graph = graph.replace(way);
+           return graph;

          };
          };

-         return _t("QA.improveOSM.directions.".concat(compass[dir]));
-       } // Errors shouldn't obscure each other

 
 

+         action.makeConvex = function (graph) {
+           var way = graph.entity(wayId);
+           var nodes = utilArrayUniq(graph.childNodes(way));
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var sign = d3_polygonArea(points) > 0 ? 1 : -1;
+           var hull = d3_polygonHull(points);
+           var i, j; // D3 convex hulls go counterclockwise..

 
 

-       function preventCoincident(loc, bumpUp) {
-         var coincident = false;
+           if (sign === -1) {
+             nodes.reverse();
+             points.reverse();
+           }

 
 

-         do {
-           // first time, move marker up. after that, move marker right.
-           var delta = coincident ? [0.00001, 0] : bumpUp ? [0, 0.00001] : [0, 0];
-           loc = geoVecAdd(loc, delta);
-           var bbox = geoExtent(loc).bbox();
-           coincident = _cache$1.rtree.search(bbox).length;
-         } while (coincident);
+           for (i = 0; i < hull.length - 1; i++) {
+             var startIndex = points.indexOf(hull[i]);
+             var endIndex = points.indexOf(hull[i + 1]);
+             var indexRange = endIndex - startIndex;

 
 

-         return loc;
-       }
+             if (indexRange < 0) {
+               indexRange += nodes.length;
+             } // move interior nodes to the surface of the convex hull..

 
 

-       var serviceImproveOSM = {
-         title: 'improveOSM',
-         init: function init() {
-           _mainFileFetcher.get('qa_data').then(function (d) {
-             return _impOsmData = d.improveOSM;
-           });

 
 

-           if (!_cache$1) {
-             this.reset();
+             for (j = 1; j < indexRange; j++) {
+               var point = geoVecInterp(hull[i], hull[i + 1], j / indexRange);
+               var node = nodes[(j + startIndex) % nodes.length].move(projection.invert(point));
+               graph = graph.replace(node);
+             }

            }
 
            }
 

-           this.event = utilRebind(this, dispatch$2, 'on');
-         },
-         reset: function reset() {
-           if (_cache$1) {
-             Object.values(_cache$1.inflightTile).forEach(abortRequest$1);
+           return graph;
+         };
+
+         action.disabled = function (graph) {
+           if (!graph.entity(wayId).isClosed()) {
+             return 'not_closed';
+           } //disable when already circular
+
+
+           var way = graph.entity(wayId);
+           var nodes = utilArrayUniq(graph.childNodes(way));
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var hull = d3_polygonHull(points);
+           var epsilonAngle = Math.PI / 180;
+
+           if (hull.length !== points.length || hull.length < 3) {
+             return false;

            }
 
            }
 

-           _cache$1 = {
-             data: {},
-             loadedTile: {},
-             inflightTile: {},
-             inflightPost: {},
-             closed: {},
-             rtree: new RBush()
-           };
-         },
-         loadIssues: function loadIssues(projection) {
-           var _this = this;
+           var centroid = d3_polygonCentroid(points);
+           var radius = geoVecLengthSquare(centroid, points[0]);
+           var i, actualPoint; // compare distances between centroid and points

 
 

-           var options = {
-             client: 'iD',
-             status: 'OPEN',
-             zoom: '19' // Use a high zoom so that clusters aren't returned
+           for (i = 0; i < hull.length; i++) {
+             actualPoint = hull[i];
+             var actualDist = geoVecLengthSquare(actualPoint, centroid);
+             var diff = Math.abs(actualDist - radius); //compare distances with epsilon-error (5%)

 
 

-           }; // determine the needed tiles to cover the view
+             if (diff > 0.05 * radius) {
+               return false;
+             }
+           } //check if central angles are smaller than maxAngle
+
+
+           for (i = 0; i < hull.length; i++) {
+             actualPoint = hull[i];
+             var nextPoint = hull[(i + 1) % hull.length];
+             var startAngle = Math.atan2(actualPoint[1] - centroid[1], actualPoint[0] - centroid[0]);
+             var endAngle = Math.atan2(nextPoint[1] - centroid[1], nextPoint[0] - centroid[0]);
+             var angle = endAngle - startAngle;

 
 

-           var tiles = tiler$1.zoomExtent([_tileZoom$1, _tileZoom$1]).getTiles(projection); // abort inflight requests that are no longer needed
+             if (angle < 0) {
+               angle = -angle;
+             }

 
 

-           abortUnwantedRequests$1(_cache$1, tiles); // issue new requests..
+             if (angle > Math.PI) {
+               angle = 2 * Math.PI - angle;
+             }

 
 

-           tiles.forEach(function (tile) {
-             if (_cache$1.loadedTile[tile.id] || _cache$1.inflightTile[tile.id]) return;
+             if (angle > maxAngle + epsilonAngle) {
+               return false;
+             }
+           }

 
 

-             var _tile$extent$rectangl = tile.extent.rectangle(),
-                 _tile$extent$rectangl2 = _slicedToArray(_tile$extent$rectangl, 4),
-                 east = _tile$extent$rectangl2[0],
-                 north = _tile$extent$rectangl2[1],
-                 west = _tile$extent$rectangl2[2],
-                 south = _tile$extent$rectangl2[3];
+           return 'already_circular';
+         };

 
 

-             var params = Object.assign({}, options, {
-               east: east,
-               south: south,
-               west: west,
-               north: north
-             }); // 3 separate requests to store for each tile
+         action.transitionable = true;
+         return action;
+       }

 
 

-             var requests = {};
-             Object.keys(_impOsmUrls).forEach(function (k) {
-               // We exclude WATER from missing geometry as it doesn't seem useful
-               // We use most confident one-way and turn restrictions only, still have false positives
-               var kParams = Object.assign({}, params, k === 'mr' ? {
-                 type: 'PARKING,ROAD,BOTH,PATH'
-               } : {
-                 confidenceLevel: 'C1'
-               });
-               var url = "".concat(_impOsmUrls[k], "/search?") + utilQsString(kParams);
-               var controller = new AbortController();
-               requests[k] = controller;
-               d3_json(url, {
-                 signal: controller.signal
-               }).then(function (data) {
-                 delete _cache$1.inflightTile[tile.id][k];
+       function actionDeleteWay(wayID) {
+         function canDeleteNode(node, graph) {
+           // don't delete nodes still attached to ways or relations
+           if (graph.parentWays(node).length || graph.parentRelations(node).length) return false;
+           var geometries = osmNodeGeometriesForTags(node.tags); // don't delete if this node can be a standalone point

 
 

-                 if (!Object.keys(_cache$1.inflightTile[tile.id]).length) {
-                   delete _cache$1.inflightTile[tile.id];
-                   _cache$1.loadedTile[tile.id] = true;
-                 } // Road segments at high zoom == oneways
+           if (geometries.point) return false; // delete if this node only be a vertex

 
 

+           if (geometries.vertex) return true; // iD doesn't know if this should be a point or vertex,
+           // so only delete if there are no interesting tags

 
 

-                 if (data.roadSegments) {
-                   data.roadSegments.forEach(function (feature) {
-                     // Position error at the approximate middle of the segment
-                     var points = feature.points,
-                         wayId = feature.wayId,
-                         fromNodeId = feature.fromNodeId,
-                         toNodeId = feature.toNodeId;
-                     var itemId = "".concat(wayId).concat(fromNodeId).concat(toNodeId);
-                     var mid = points.length / 2;
-                     var loc; // Even number of points, find midpoint of the middle two
-                     // Odd number of points, use position of very middle point
+           return !node.hasInterestingTags();
+         }

 
 

-                     if (mid % 1 === 0) {
-                       loc = pointAverage([points[mid - 1], points[mid]]);
-                     } else {
-                       mid = points[Math.floor(mid)];
-                       loc = [mid.lon, mid.lat];
-                     } // One-ways can land on same segment in opposite direction
+         var action = function action(graph) {
+           var way = graph.entity(wayID);
+           graph.parentRelations(way).forEach(function (parent) {
+             parent = parent.removeMembersWithID(wayID);
+             graph = graph.replace(parent);

 
 

+             if (parent.isDegenerate()) {
+               graph = actionDeleteRelation(parent.id)(graph);
+             }
+           });
+           new Set(way.nodes).forEach(function (nodeID) {
+             graph = graph.replace(way.removeNode(nodeID));
+             var node = graph.entity(nodeID);

 
 

-                     loc = preventCoincident(loc, false);
-                     var d = new QAItem(loc, _this, k, itemId, {
-                       issueKey: k,
-                       // used as a category
-                       identifier: {
-                         // used to post changes
-                         wayId: wayId,
-                         fromNodeId: fromNodeId,
-                         toNodeId: toNodeId
-                       },
-                       objectId: wayId,
-                       objectType: 'way'
-                     }); // Variables used in the description
+             if (canDeleteNode(node, graph)) {
+               graph = graph.remove(node);
+             }
+           });
+           return graph.remove(way);
+         };

 
 

-                     d.replacements = {
-                       percentage: feature.percentOfTrips,
-                       num_trips: feature.numberOfTrips,
-                       highway: linkErrorObject(_t('QA.keepRight.error_parts.highway')),
-                       from_node: linkEntity('n' + feature.fromNodeId),
-                       to_node: linkEntity('n' + feature.toNodeId)
-                     };
-                     _cache$1.data[d.id] = d;
+         return action;
+       }

 
 

-                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
-                   });
-                 } // Tiles at high zoom == missing roads
+       function actionDeleteMultiple(ids) {
+         var actions = {
+           way: actionDeleteWay,
+           node: actionDeleteNode,
+           relation: actionDeleteRelation
+         };
+
+         var action = function action(graph) {
+           ids.forEach(function (id) {
+             if (graph.hasEntity(id)) {
+               // It may have been deleted already.
+               graph = actions[graph.entity(id).type](id)(graph);
+             }
+           });
+           return graph;
+         };

 
 

+         return action;
+       }

 
 

-                 if (data.tiles) {
-                   data.tiles.forEach(function (feature) {
-                     var type = feature.type,
-                         x = feature.x,
-                         y = feature.y,
-                         numberOfTrips = feature.numberOfTrips;
-                     var geoType = type.toLowerCase();
-                     var itemId = "".concat(geoType).concat(x).concat(y).concat(numberOfTrips); // Average of recorded points should land on the missing geometry
-                     // Missing geometry could happen to land on another error
+       function actionDeleteRelation(relationID, allowUntaggedMembers) {
+         function canDeleteEntity(entity, graph) {
+           return !graph.parentWays(entity).length && !graph.parentRelations(entity).length && !entity.hasInterestingTags() && !allowUntaggedMembers;
+         }

 
 

-                     var loc = pointAverage(feature.points);
-                     loc = preventCoincident(loc, false);
-                     var d = new QAItem(loc, _this, "".concat(k, "-").concat(geoType), itemId, {
-                       issueKey: k,
-                       identifier: {
-                         x: x,
-                         y: y
-                       }
-                     });
-                     d.replacements = {
-                       num_trips: numberOfTrips,
-                       geometry_type: _t("QA.improveOSM.geometry_types.".concat(geoType))
-                     }; // -1 trips indicates data came from a 3rd party
+         var action = function action(graph) {
+           var relation = graph.entity(relationID);
+           graph.parentRelations(relation).forEach(function (parent) {
+             parent = parent.removeMembersWithID(relationID);
+             graph = graph.replace(parent);

 
 

-                     if (numberOfTrips === -1) {
-                       d.desc = _t('QA.improveOSM.error_types.mr.description_alt', d.replacements);
-                     }
+             if (parent.isDegenerate()) {
+               graph = actionDeleteRelation(parent.id)(graph);
+             }
+           });
+           var memberIDs = utilArrayUniq(relation.members.map(function (m) {
+             return m.id;
+           }));
+           memberIDs.forEach(function (memberID) {
+             graph = graph.replace(relation.removeMembersWithID(memberID));
+             var entity = graph.entity(memberID);

 
 

-                     _cache$1.data[d.id] = d;
+             if (canDeleteEntity(entity, graph)) {
+               graph = actionDeleteMultiple([memberID])(graph);
+             }
+           });
+           return graph.remove(relation);
+         };

 
 

-                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
-                   });
-                 } // Entities at high zoom == turn restrictions
+         return action;
+       }

 
 

+       function actionDeleteNode(nodeId) {
+         var action = function action(graph) {
+           var node = graph.entity(nodeId);
+           graph.parentWays(node).forEach(function (parent) {
+             parent = parent.removeNode(nodeId);
+             graph = graph.replace(parent);

 
 

-                 if (data.entities) {
-                   data.entities.forEach(function (feature) {
-                     var point = feature.point,
-                         id = feature.id,
-                         segments = feature.segments,
-                         numberOfPasses = feature.numberOfPasses,
-                         turnType = feature.turnType;
-                     var itemId = "".concat(id.replace(/[,:+#]/g, '_')); // Turn restrictions could be missing at same junction
-                     // We also want to bump the error up so node is accessible
+             if (parent.isDegenerate()) {
+               graph = actionDeleteWay(parent.id)(graph);
+             }
+           });
+           graph.parentRelations(node).forEach(function (parent) {
+             parent = parent.removeMembersWithID(nodeId);
+             graph = graph.replace(parent);

 
 

-                     var loc = preventCoincident([point.lon, point.lat], true); // Elements are presented in a strange way
+             if (parent.isDegenerate()) {
+               graph = actionDeleteRelation(parent.id)(graph);
+             }
+           });
+           return graph.remove(node);
+         };

 
 

-                     var ids = id.split(',');
-                     var from_way = ids[0];
-                     var via_node = ids[3];
-                     var to_way = ids[2].split(':')[1];
-                     var d = new QAItem(loc, _this, k, itemId, {
-                       issueKey: k,
-                       identifier: id,
-                       objectId: via_node,
-                       objectType: 'node'
-                     }); // Travel direction along from_way clarifies the turn restriction
+         return action;
+       }

 
 

-                     var _segments$0$points = _slicedToArray(segments[0].points, 2),
-                         p1 = _segments$0$points[0],
-                         p2 = _segments$0$points[1];
+       //
+       // First choose a node to be the survivor, with preference given
+       // to an existing (not new) node.
+       //
+       // Tags and relation memberships of of non-surviving nodes are merged
+       // to the survivor.
+       //
+       // This is the inverse of `iD.actionDisconnect`.
+       //
+       // Reference:
+       //   https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MergeNodesAction.as
+       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/MergeNodesAction.java
+       //
+
+       function actionConnect(nodeIDs) {
+         var action = function action(graph) {
+           var survivor;
+           var node;
+           var parents;
+           var i, j; // Choose a survivor node, prefer an existing (not new) node - #4974

 
 

-                     var dir_of_travel = cardinalDirection(relativeBearing(p1, p2)); // Variables used in the description
+           for (i = 0; i < nodeIDs.length; i++) {
+             survivor = graph.entity(nodeIDs[i]);
+             if (survivor.version) break; // found one
+           } // Replace all non-surviving nodes with the survivor and merge tags.

 
 

-                     d.replacements = {
-                       num_passed: numberOfPasses,
-                       num_trips: segments[0].numberOfTrips,
-                       turn_restriction: turnType.toLowerCase(),
-                       from_way: linkEntity('w' + from_way),
-                       to_way: linkEntity('w' + to_way),
-                       travel_direction: dir_of_travel,
-                       junction: linkErrorObject(_t('QA.keepRight.error_parts.this_node'))
-                     };
-                     _cache$1.data[d.id] = d;

 
 

-                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             if (node.id === survivor.id) continue;
+             parents = graph.parentWays(node);

 
 

-                     dispatch$2.call('loaded');
-                   });
-                 }
-               })["catch"](function () {
-                 delete _cache$1.inflightTile[tile.id][k];
+             for (j = 0; j < parents.length; j++) {
+               graph = graph.replace(parents[j].replaceNode(node.id, survivor.id));
+             }

 
 

-                 if (!Object.keys(_cache$1.inflightTile[tile.id]).length) {
-                   delete _cache$1.inflightTile[tile.id];
-                   _cache$1.loadedTile[tile.id] = true;
-                 }
-               });
-             });
-             _cache$1.inflightTile[tile.id] = requests;
-           });
-         },
-         getComments: function getComments(item) {
-           var _this2 = this;
+             parents = graph.parentRelations(node);

 
 

-           // If comments already retrieved no need to do so again
-           if (item.comments) {
-             return Promise.resolve(item);
+             for (j = 0; j < parents.length; j++) {
+               graph = graph.replace(parents[j].replaceMember(node, survivor));
+             }
+
+             survivor = survivor.mergeTags(node.tags);
+             graph = actionDeleteNode(node.id)(graph);

            }
 
            }
 

-           var key = item.issueKey;
-           var qParams = {};
+           graph = graph.replace(survivor); // find and delete any degenerate ways created by connecting adjacent vertices

 
 

-           if (key === 'ow') {
-             qParams = item.identifier;
-           } else if (key === 'mr') {
-             qParams.tileX = item.identifier.x;
-             qParams.tileY = item.identifier.y;
-           } else if (key === 'tr') {
-             qParams.targetId = item.identifier;
-           }
+           parents = graph.parentWays(survivor);

 
 

-           var url = "".concat(_impOsmUrls[key], "/retrieveComments?") + utilQsString(qParams);
+           for (i = 0; i < parents.length; i++) {
+             if (parents[i].isDegenerate()) {
+               graph = actionDeleteWay(parents[i].id)(graph);
+             }
+           }

 
 

-           var cacheComments = function cacheComments(data) {
-             // Assign directly for immediate use afterwards
-             // comments are served newest to oldest
-             item.comments = data.comments ? data.comments.reverse() : [];
+           return graph;
+         };

 
 

-             _this2.replaceItem(item);
-           };
+         action.disabled = function (graph) {
+           var seen = {};
+           var restrictionIDs = [];
+           var survivor;
+           var node, way;
+           var relations, relation, role;
+           var i, j, k; // Choose a survivor node, prefer an existing (not new) node - #4974

 
 

-           return d3_json(url).then(cacheComments).then(function () {
-             return item;
-           });
-         },
-         postUpdate: function postUpdate(d, callback) {
-           if (!serviceOsm.authenticated()) {
-             // Username required in payload
-             return callback({
-               message: 'Not Authenticated',
-               status: -3
-             }, d);
-           }
+           for (i = 0; i < nodeIDs.length; i++) {
+             survivor = graph.entity(nodeIDs[i]);
+             if (survivor.version) break; // found one
+           } // 1. disable if the nodes being connected have conflicting relation roles

 
 

-           if (_cache$1.inflightPost[d.id]) {
-             return callback({
-               message: 'Error update already inflight',
-               status: -2
-             }, d);
-           } // Payload can only be sent once username is established

 
 

+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             relations = graph.parentRelations(node);

 
 

-           serviceOsm.userDetails(sendPayload.bind(this));
+             for (j = 0; j < relations.length; j++) {
+               relation = relations[j];
+               role = relation.memberById(node.id).role || ''; // if this node is a via node in a restriction, remember for later

 
 

-           function sendPayload(err, user) {
-             var _this3 = this;
+               if (relation.hasFromViaTo()) {
+                 restrictionIDs.push(relation.id);
+               }

 
 

-             if (err) {
-               return callback(err, d);
+               if (seen[relation.id] !== undefined && seen[relation.id] !== role) {
+                 return 'relation';
+               } else {
+                 seen[relation.id] = role;
+               }

              }
              }

+           } // gather restrictions for parent ways

 
 

-             var key = d.issueKey;
-             var url = "".concat(_impOsmUrls[key], "/comment");
-             var payload = {
-               username: user.display_name,
-               targetIds: [d.identifier]
-             };

 
 

-             if (d.newStatus) {
-               payload.status = d.newStatus;
-               payload.text = 'status changed';
-             } // Comment take place of default text
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             var parents = graph.parentWays(node);

 
 

+             for (j = 0; j < parents.length; j++) {
+               var parent = parents[j];
+               relations = graph.parentRelations(parent);

 
 

-             if (d.newComment) {
-               payload.text = d.newComment;
+               for (k = 0; k < relations.length; k++) {
+                 relation = relations[k];
+
+                 if (relation.hasFromViaTo()) {
+                   restrictionIDs.push(relation.id);
+                 }
+               }

              }
              }

+           } // test restrictions

 
 

-             var controller = new AbortController();
-             _cache$1.inflightPost[d.id] = controller;
-             var options = {
-               method: 'POST',
-               signal: controller.signal,
-               body: JSON.stringify(payload)
+
+           restrictionIDs = utilArrayUniq(restrictionIDs);
+
+           for (i = 0; i < restrictionIDs.length; i++) {
+             relation = graph.entity(restrictionIDs[i]);
+             if (!relation.isComplete(graph)) continue;
+             var memberWays = relation.members.filter(function (m) {
+               return m.type === 'way';
+             }).map(function (m) {
+               return graph.entity(m.id);
+             });
+             memberWays = utilArrayUniq(memberWays);
+             var f = relation.memberByRole('from');
+             var t = relation.memberByRole('to');
+             var isUturn = f.id === t.id; // 2a. disable if connection would damage a restriction
+             // (a key node is a node at the junction of ways)
+
+             var nodes = {
+               from: [],
+               via: [],
+               to: [],
+               keyfrom: [],
+               keyto: []

              };
              };

-             d3_json(url, options).then(function () {
-               delete _cache$1.inflightPost[d.id]; // Just a comment, update error in cache

 
 

-               if (!d.newStatus) {
-                 var now = new Date();
-                 var comments = d.comments ? d.comments : [];
-                 comments.push({
-                   username: payload.username,
-                   text: payload.text,
-                   timestamp: now.getTime() / 1000
-                 });
+             for (j = 0; j < relation.members.length; j++) {
+               collectNodes(relation.members[j], nodes);
+             }

 
 

-                 _this3.replaceItem(d.update({
-                   comments: comments,
-                   newComment: undefined
-                 }));
-               } else {
-                 _this3.removeItem(d);
+             nodes.keyfrom = utilArrayUniq(nodes.keyfrom.filter(hasDuplicates));
+             nodes.keyto = utilArrayUniq(nodes.keyto.filter(hasDuplicates));
+             var filter = keyNodeFilter(nodes.keyfrom, nodes.keyto);
+             nodes.from = nodes.from.filter(filter);
+             nodes.via = nodes.via.filter(filter);
+             nodes.to = nodes.to.filter(filter);
+             var connectFrom = false;
+             var connectVia = false;
+             var connectTo = false;
+             var connectKeyFrom = false;
+             var connectKeyTo = false;

 
 

-                 if (d.newStatus === 'SOLVED') {
-                   // Keep track of the number of issues closed per type to tag the changeset
-                   if (!(d.issueKey in _cache$1.closed)) {
-                     _cache$1.closed[d.issueKey] = 0;
-                   }
+             for (j = 0; j < nodeIDs.length; j++) {
+               var n = nodeIDs[j];

 
 

-                   _cache$1.closed[d.issueKey] += 1;
-                 }
+               if (nodes.from.indexOf(n) !== -1) {
+                 connectFrom = true;

                }
 
                }
 

-               if (callback) callback(null, d);
-             })["catch"](function (err) {
-               delete _cache$1.inflightPost[d.id];
-               if (callback) callback(err.message);
-             });
-           }
-         },
-         // Get all cached QAItems covering the viewport
-         getItems: function getItems(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           return _cache$1.rtree.search(bbox).map(function (d) {
-             return d.data;
-           });
-         },
-         // Get a QAItem from cache
-         // NOTE: Don't change method name until UI v3 is merged
-         getError: function getError(id) {
-           return _cache$1.data[id];
-         },
-         // get the name of the icon to display for this item
-         getIcon: function getIcon(itemType) {
-           return _impOsmData.icons[itemType];
-         },
-         // Replace a single QAItem in the cache
-         replaceItem: function replaceItem(issue) {
-           if (!(issue instanceof QAItem) || !issue.id) return;
-           _cache$1.data[issue.id] = issue;
-           updateRtree$1(encodeIssueRtree$1(issue), true); // true = replace
-
-           return issue;
-         },
-         // Remove a single QAItem from the cache
-         removeItem: function removeItem(issue) {
-           if (!(issue instanceof QAItem) || !issue.id) return;
-           delete _cache$1.data[issue.id];
-           updateRtree$1(encodeIssueRtree$1(issue), false); // false = remove
-         },
-         // Used to populate `closed:improveosm:*` changeset tags
-         getClosedCounts: function getClosedCounts() {
-           return _cache$1.closed;
-         }
-       };
+               if (nodes.via.indexOf(n) !== -1) {
+                 connectVia = true;
+               }

 
 

-       var quot = /"/g;
+               if (nodes.to.indexOf(n) !== -1) {
+                 connectTo = true;
+               }

 
 

-       // B.2.3.2.1 CreateHTML(string, tag, attribute, value)
-       // https://tc39.github.io/ecma262/#sec-createhtml
-       var createHtml = function (string, tag, attribute, value) {
-         var S = String(requireObjectCoercible(string));
-         var p1 = '<' + tag;
-         if (attribute !== '') p1 += ' ' + attribute + '="' + String(value).replace(quot, '&quot;') + '"';
-         return p1 + '>' + S + '</' + tag + '>';
-       };
+               if (nodes.keyfrom.indexOf(n) !== -1) {
+                 connectKeyFrom = true;
+               }

 
 

-       // check the existence of a method, lowercase
-       // of a tag and escaping quotes in arguments
-       var stringHtmlForced = function (METHOD_NAME) {
-         return fails(function () {
-           var test = ''[METHOD_NAME]('"');
-           return test !== test.toLowerCase() || test.split('"').length > 3;
-         });
-       };
+               if (nodes.keyto.indexOf(n) !== -1) {
+                 connectKeyTo = true;
+               }
+             }

 
 

-       // `String.prototype.link` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.link
-       _export({ target: 'String', proto: true, forced: stringHtmlForced('link') }, {
-         link: function link(url) {
-           return createHtml(this, 'a', 'href', url);
-         }
-       });
+             if (connectFrom && connectTo && !isUturn) {
+               return 'restriction';
+             }

 
 

-       var getOwnPropertyDescriptor$4 = objectGetOwnPropertyDescriptor.f;
+             if (connectFrom && connectVia) {
+               return 'restriction';
+             }

 
 

+             if (connectTo && connectVia) {
+               return 'restriction';
+             } // connecting to a key node -
+             // if both nodes are on a member way (i.e. part of the turn restriction),
+             // the connecting node must be adjacent to the key node.

 
 
 
 

+             if (connectKeyFrom || connectKeyTo) {
+               if (nodeIDs.length !== 2) {
+                 return 'restriction';
+               }

 
 

+               var n0 = null;
+               var n1 = null;

 
 

+               for (j = 0; j < memberWays.length; j++) {
+                 way = memberWays[j];

 
 

-       var nativeEndsWith = ''.endsWith;
-       var min$8 = Math.min;
+                 if (way.contains(nodeIDs[0])) {
+                   n0 = nodeIDs[0];
+                 }

 
 

-       var CORRECT_IS_REGEXP_LOGIC = correctIsRegexpLogic('endsWith');
-       // https://github.com/zloirock/core-js/pull/702
-       var MDN_POLYFILL_BUG =  !CORRECT_IS_REGEXP_LOGIC && !!function () {
-         var descriptor = getOwnPropertyDescriptor$4(String.prototype, 'endsWith');
-         return descriptor && !descriptor.writable;
-       }();
+                 if (way.contains(nodeIDs[1])) {
+                   n1 = nodeIDs[1];
+                 }
+               }

 
 

-       // `String.prototype.endsWith` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.endswith
-       _export({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG && !CORRECT_IS_REGEXP_LOGIC }, {
-         endsWith: function endsWith(searchString /* , endPosition = @length */) {
-           var that = String(requireObjectCoercible(this));
-           notARegexp(searchString);
-           var endPosition = arguments.length > 1 ? arguments[1] : undefined;
-           var len = toLength(that.length);
-           var end = endPosition === undefined ? len : min$8(toLength(endPosition), len);
-           var search = String(searchString);
-           return nativeEndsWith
-             ? nativeEndsWith.call(that, search, end)
-             : that.slice(end - search.length, end) === search;
-         }
-       });
+               if (n0 && n1) {
+                 // both nodes are part of the restriction
+                 var ok = false;

 
 

-       var getOwnPropertyDescriptor$5 = objectGetOwnPropertyDescriptor.f;
+                 for (j = 0; j < memberWays.length; j++) {
+                   way = memberWays[j];

 
 

+                   if (way.areAdjacent(n0, n1)) {
+                     ok = true;
+                     break;
+                   }
+                 }

 
 

+                 if (!ok) {
+                   return 'restriction';
+                 }
+               }
+             } // 2b. disable if nodes being connected will destroy a member way in a restriction
+             // (to test, make a copy and try actually connecting the nodes)

 
 
 
 

+             for (j = 0; j < memberWays.length; j++) {
+               way = memberWays[j].update({}); // make copy

 
 

+               for (k = 0; k < nodeIDs.length; k++) {
+                 if (nodeIDs[k] === survivor.id) continue;

 
 

-       var nativeStartsWith = ''.startsWith;
-       var min$9 = Math.min;
+                 if (way.areAdjacent(nodeIDs[k], survivor.id)) {
+                   way = way.removeNode(nodeIDs[k]);
+                 } else {
+                   way = way.replaceNode(nodeIDs[k], survivor.id);
+                 }
+               }

 
 

-       var CORRECT_IS_REGEXP_LOGIC$1 = correctIsRegexpLogic('startsWith');
-       // https://github.com/zloirock/core-js/pull/702
-       var MDN_POLYFILL_BUG$1 =  !CORRECT_IS_REGEXP_LOGIC$1 && !!function () {
-         var descriptor = getOwnPropertyDescriptor$5(String.prototype, 'startsWith');
-         return descriptor && !descriptor.writable;
-       }();
+               if (way.isDegenerate()) {
+                 return 'restriction';
+               }
+             }
+           }

 
 

-       // `String.prototype.startsWith` method
-       // https://tc39.github.io/ecma262/#sec-string.prototype.startswith
-       _export({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG$1 && !CORRECT_IS_REGEXP_LOGIC$1 }, {
-         startsWith: function startsWith(searchString /* , position = 0 */) {
-           var that = String(requireObjectCoercible(this));
-           notARegexp(searchString);
-           var index = toLength(min$9(arguments.length > 1 ? arguments[1] : undefined, that.length));
-           var search = String(searchString);
-           return nativeStartsWith
-             ? nativeStartsWith.call(that, search, index)
-             : that.slice(index, index + search.length) === search;
-         }
-       });
+           return false; // if a key node appears multiple times (indexOf !== lastIndexOf) it's a FROM-VIA or TO-VIA junction

 
 

-       var $trimEnd = stringTrim.end;
+           function hasDuplicates(n, i, arr) {
+             return arr.indexOf(n) !== arr.lastIndexOf(n);
+           }

 
 

+           function keyNodeFilter(froms, tos) {
+             return function (n) {
+               return froms.indexOf(n) === -1 && tos.indexOf(n) === -1;
+             };
+           }

 
 

-       var FORCED$e = stringTrimForced('trimEnd');
+           function collectNodes(member, collection) {
+             var entity = graph.hasEntity(member.id);
+             if (!entity) return;
+             var role = member.role || '';

 
 

-       var trimEnd = FORCED$e ? function trimEnd() {
-         return $trimEnd(this);
-       } : ''.trimEnd;
+             if (!collection[role]) {
+               collection[role] = [];
+             }

 
 

-       // `String.prototype.{ trimEnd, trimRight }` methods
-       // https://github.com/tc39/ecmascript-string-left-right-trim
-       _export({ target: 'String', proto: true, forced: FORCED$e }, {
-         trimEnd: trimEnd,
-         trimRight: trimEnd
-       });
+             if (member.type === 'node') {
+               collection[role].push(member.id);

 
 

-       var defaults = createCommonjsModule(function (module) {
-         function getDefaults() {
-           return {
-             baseUrl: null,
-             breaks: false,
-             gfm: true,
-             headerIds: true,
-             headerPrefix: '',
-             highlight: null,
-             langPrefix: 'language-',
-             mangle: true,
-             pedantic: false,
-             renderer: null,
-             sanitize: false,
-             sanitizer: null,
-             silent: false,
-             smartLists: false,
-             smartypants: false,
-             tokenizer: null,
-             walkTokens: null,
-             xhtml: false
-           };
-         }
+               if (role === 'via') {
+                 collection.keyfrom.push(member.id);
+                 collection.keyto.push(member.id);
+               }
+             } else if (member.type === 'way') {
+               collection[role].push.apply(collection[role], entity.nodes);

 
 

-         function changeDefaults(newDefaults) {
-           module.exports.defaults = newDefaults;
-         }
+               if (role === 'from' || role === 'via') {
+                 collection.keyfrom.push(entity.first());
+                 collection.keyfrom.push(entity.last());
+               }

 
 

-         module.exports = {
-           defaults: getDefaults(),
-           getDefaults: getDefaults,
-           changeDefaults: changeDefaults
+               if (role === 'to' || role === 'via') {
+                 collection.keyto.push(entity.first());
+                 collection.keyto.push(entity.last());
+               }
+             }
+           }

          };
          };

-       });

 
 

-       /**
-        * Helpers
-        */
-       var escapeTest = /[&<>"']/;
-       var escapeReplace = /[&<>"']/g;
-       var escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
-       var escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g;
-       var escapeReplacements = {
-         '&': '&amp;',
-         '<': '&lt;',
-         '>': '&gt;',
-         '"': '&quot;',
-         "'": '&#39;'
-       };
+         return action;
+       }

 
 

-       var getEscapeReplacement = function getEscapeReplacement(ch) {
-         return escapeReplacements[ch];
-       };
+       function actionCopyEntities(ids, fromGraph) {
+         var _copies = {};

 
 

-       function escape$1(html, encode) {
-         if (encode) {
-           if (escapeTest.test(html)) {
-             return html.replace(escapeReplace, getEscapeReplacement);
-           }
-         } else {
-           if (escapeTestNoEncode.test(html)) {
-             return html.replace(escapeReplaceNoEncode, getEscapeReplacement);
+         var action = function action(graph) {
+           ids.forEach(function (id) {
+             fromGraph.entity(id).copy(fromGraph, _copies);
+           });
+
+           for (var id in _copies) {
+             graph = graph.replace(_copies[id]);

            }
            }

-         }

 
 

-         return html;
-       }
+           return graph;
+         };

 
 

-       var unescapeTest = /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig;
+         action.copies = function () {
+           return _copies;
+         };

 
 

-       function unescape$1(html) {
-         // explicitly match decimal, hex, and named HTML entities
-         return html.replace(unescapeTest, function (_, n) {
-           n = n.toLowerCase();
-           if (n === 'colon') return ':';
+         return action;
+       }

 
 

-           if (n.charAt(0) === '#') {
-             return n.charAt(1) === 'x' ? String.fromCharCode(parseInt(n.substring(2), 16)) : String.fromCharCode(+n.substring(1));
+       function actionDeleteMember(relationId, memberIndex) {
+         return function (graph) {
+           var relation = graph.entity(relationId).removeMember(memberIndex);
+           graph = graph.replace(relation);
+
+           if (relation.isDegenerate()) {
+             graph = actionDeleteRelation(relation.id)(graph);

            }
 
            }
 

-           return '';
-         });
+           return graph;
+         };

        }
 
        }
 

-       var caret = /(^|[^\[])\^/g;
+       function actionDiscardTags(difference, discardTags) {
+         discardTags = discardTags || {};
+         return function (graph) {
+           difference.modified().forEach(checkTags);
+           difference.created().forEach(checkTags);
+           return graph;

 
 

-       function edit(regex, opt) {
-         regex = regex.source || regex;
-         opt = opt || '';
-         var obj = {
-           replace: function replace(name, val) {
-             val = val.source || val;
-             val = val.replace(caret, '$1');
-             regex = regex.replace(name, val);
-             return obj;
-           },
-           getRegex: function getRegex() {
-             return new RegExp(regex, opt);
+           function checkTags(entity) {
+             var keys = Object.keys(entity.tags);
+             var didDiscard = false;
+             var tags = {};
+
+             for (var i = 0; i < keys.length; i++) {
+               var k = keys[i];
+
+               if (discardTags[k] || !entity.tags[k]) {
+                 didDiscard = true;
+               } else {
+                 tags[k] = entity.tags[k];
+               }
+             }
+
+             if (didDiscard) {
+               graph = graph.replace(entity.update({
+                 tags: tags
+               }));
+             }

            }
          };
            }
          };

-         return obj;

        }
 
        }
 

-       var nonWordAndColonTest = /[^\w:]/g;
-       var originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;
+       //
+       // Optionally, disconnect only the given ways.
+       //
+       // For testing convenience, accepts an ID to assign to the (first) new node.
+       // Normally, this will be undefined and the way will automatically
+       // be assigned a new ID.
+       //
+       // This is the inverse of `iD.actionConnect`.
+       //
+       // Reference:
+       //   https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/UnjoinNodeAction.as
+       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/UnGlueAction.java
+       //

 
 

-       function cleanUrl(sanitize, base, href) {
-         if (sanitize) {
-           var prot;
+       function actionDisconnect(nodeId, newNodeId) {
+         var wayIds;

 
 

-           try {
-             prot = decodeURIComponent(unescape$1(href)).replace(nonWordAndColonTest, '').toLowerCase();
-           } catch (e) {
-             return null;
-           }
+         var action = function action(graph) {
+           var node = graph.entity(nodeId);
+           var connections = action.connections(graph);
+           connections.forEach(function (connection) {
+             var way = graph.entity(connection.wayID);
+             var newNode = osmNode({
+               id: newNodeId,
+               loc: node.loc,
+               tags: node.tags
+             });
+             graph = graph.replace(newNode);

 
 

-           if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
-             return null;
-           }
-         }
+             if (connection.index === 0 && way.isArea()) {
+               // replace shared node with shared node..
+               graph = graph.replace(way.replaceNode(way.nodes[0], newNode.id));
+             } else if (way.isClosed() && connection.index === way.nodes.length - 1) {
+               // replace closing node with new new node..
+               graph = graph.replace(way.unclose().addNode(newNode.id));
+             } else {
+               // replace shared node with multiple new nodes..
+               graph = graph.replace(way.updateNode(newNode.id, connection.index));
+             }
+           });
+           return graph;
+         };

 
 

-         if (base && !originIndependentUrl.test(href)) {
-           href = resolveUrl(base, href);
-         }
+         action.connections = function (graph) {
+           var candidates = [];
+           var keeping = false;
+           var parentWays = graph.parentWays(graph.entity(nodeId));
+           var way, waynode;

 
 

-         try {
-           href = encodeURI(href).replace(/%25/g, '%');
-         } catch (e) {
-           return null;
-         }
+           for (var i = 0; i < parentWays.length; i++) {
+             way = parentWays[i];

 
 

-         return href;
-       }
+             if (wayIds && wayIds.indexOf(way.id) === -1) {
+               keeping = true;
+               continue;
+             }

 
 

-       var baseUrls = {};
-       var justDomain = /^[^:]+:\/*[^/]*$/;
-       var protocol = /^([^:]+:)[\s\S]*$/;
-       var domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
+             if (way.isArea() && way.nodes[0] === nodeId) {
+               candidates.push({
+                 wayID: way.id,
+                 index: 0
+               });
+             } else {
+               for (var j = 0; j < way.nodes.length; j++) {
+                 waynode = way.nodes[j];

 
 

-       function resolveUrl(base, href) {
-         if (!baseUrls[' ' + base]) {
-           // we can ignore everything in base after the last slash of its path component,
-           // but we might need to add _that_
-           // https://tools.ietf.org/html/rfc3986#section-3
-           if (justDomain.test(base)) {
-             baseUrls[' ' + base] = base + '/';
-           } else {
-             baseUrls[' ' + base] = rtrim$1(base, '/', true);
+                 if (waynode === nodeId) {
+                   if (way.isClosed() && parentWays.length > 1 && wayIds && wayIds.indexOf(way.id) !== -1 && j === way.nodes.length - 1) {
+                     continue;
+                   }
+
+                   candidates.push({
+                     wayID: way.id,
+                     index: j
+                   });
+                 }
+               }
+             }

            }
            }

-         }

 
 

-         base = baseUrls[' ' + base];
-         var relativeBase = base.indexOf(':') === -1;
+           return keeping ? candidates : candidates.slice(1);
+         };

 
 

-         if (href.substring(0, 2) === '//') {
-           if (relativeBase) {
-             return href;
-           }
+         action.disabled = function (graph) {
+           var connections = action.connections(graph);
+           if (connections.length === 0) return 'not_connected';
+           var parentWays = graph.parentWays(graph.entity(nodeId));
+           var seenRelationIds = {};
+           var sharedRelation;
+           parentWays.forEach(function (way) {
+             var relations = graph.parentRelations(way);
+             relations.forEach(function (relation) {
+               if (relation.id in seenRelationIds) {
+                 if (wayIds) {
+                   if (wayIds.indexOf(way.id) !== -1 || wayIds.indexOf(seenRelationIds[relation.id]) !== -1) {
+                     sharedRelation = relation;
+                   }
+                 } else {
+                   sharedRelation = relation;
+                 }
+               } else {
+                 seenRelationIds[relation.id] = way.id;
+               }
+             });
+           });
+           if (sharedRelation) return 'relation';
+         };

 
 

-           return base.replace(protocol, '$1') + href;
-         } else if (href.charAt(0) === '/') {
-           if (relativeBase) {
-             return href;
-           }
+         action.limitWays = function (val) {
+           if (!arguments.length) return wayIds;
+           wayIds = val;
+           return action;
+         };

 
 

-           return base.replace(domain, '$1') + href;
-         } else {
-           return base + href;
-         }
+         return action;

        }
 
        }
 

-       var noopTest = {
-         exec: function noopTest() {}
-       };
-
-       function merge$1(obj) {
-         var i = 1,
-             target,
-             key;
+       function actionExtract(entityID, projection) {
+         var extractedNodeID;

 
 

-         for (; i < arguments.length; i++) {
-           target = arguments[i];
+         var action = function action(graph) {
+           var entity = graph.entity(entityID);

 
 

-           for (key in target) {
-             if (Object.prototype.hasOwnProperty.call(target, key)) {
-               obj[key] = target[key];
-             }
+           if (entity.type === 'node') {
+             return extractFromNode(entity, graph);

            }
            }

-         }

 
 

-         return obj;
-       }
+           return extractFromWayOrRelation(entity, graph);
+         };

 
 

-       function splitCells(tableRow, count) {
-         // ensure that every cell-delimiting pipe has a space
-         // before it to distinguish it from an escaped pipe
-         var row = tableRow.replace(/\|/g, function (match, offset, str) {
-           var escaped = false,
-               curr = offset;
+         function extractFromNode(node, graph) {
+           extractedNodeID = node.id; // Create a new node to replace the one we will detach

 
 

-           while (--curr >= 0 && str[curr] === '\\') {
-             escaped = !escaped;
-           }
+           var replacement = osmNode({
+             loc: node.loc
+           });
+           graph = graph.replace(replacement); // Process each way in turn, updating the graph as we go

 
 

-           if (escaped) {
-             // odd number of slashes means | is escaped
-             // so we leave it alone
-             return '|';
-           } else {
-             // add space before unescaped |
-             return ' |';
-           }
-         }),
-             cells = row.split(/ \|/);
-         var i = 0;
+           graph = graph.parentWays(node).reduce(function (accGraph, parentWay) {
+             return accGraph.replace(parentWay.replaceNode(entityID, replacement.id));
+           }, graph); // Process any relations too

 
 

-         if (cells.length > count) {
-           cells.splice(count);
-         } else {
-           while (cells.length < count) {
-             cells.push('');
-           }
+           return graph.parentRelations(node).reduce(function (accGraph, parentRel) {
+             return accGraph.replace(parentRel.replaceMember(node, replacement));
+           }, graph);

          }
 
          }
 

-         for (; i < cells.length; i++) {
-           // leading or trailing whitespace is ignored per the gfm spec
-           cells[i] = cells[i].trim().replace(/\\\|/g, '|');
-         }
+         function extractFromWayOrRelation(entity, graph) {
+           var fromGeometry = entity.geometry(graph);
+           var keysToCopyAndRetain = ['source', 'wheelchair'];
+           var keysToRetain = ['area'];
+           var buildingKeysToRetain = ['architect', 'building', 'height', 'layer'];
+           var extractedLoc = d3_geoPath(projection).centroid(entity.asGeoJSON(graph));
+           extractedLoc = extractedLoc && projection.invert(extractedLoc);

 
 

-         return cells;
-       } // Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
-       // /c*$/ is vulnerable to REDOS.
-       // invert: Remove suffix of non-c chars instead. Default falsey.
+           if (!extractedLoc || !isFinite(extractedLoc[0]) || !isFinite(extractedLoc[1])) {
+             extractedLoc = entity.extent(graph).center();
+           }

 
 

+           var indoorAreaValues = {
+             area: true,
+             corridor: true,
+             elevator: true,
+             level: true,
+             room: true
+           };
+           var isBuilding = entity.tags.building && entity.tags.building !== 'no' || entity.tags['building:part'] && entity.tags['building:part'] !== 'no';
+           var isIndoorArea = fromGeometry === 'area' && entity.tags.indoor && indoorAreaValues[entity.tags.indoor];
+           var entityTags = Object.assign({}, entity.tags); // shallow copy

 
 

-       function rtrim$1(str, c, invert) {
-         var l = str.length;
+           var pointTags = {};

 
 

-         if (l === 0) {
-           return '';
-         } // Length of suffix matching the invert condition.
+           for (var key in entityTags) {
+             if (entity.type === 'relation' && key === 'type') {
+               continue;
+             }

 
 

+             if (keysToRetain.indexOf(key) !== -1) {
+               continue;
+             }

 
 

-         var suffLen = 0; // Step left until we fail to match the invert condition.
+             if (isBuilding) {
+               // don't transfer building-related tags
+               if (buildingKeysToRetain.indexOf(key) !== -1 || key.match(/^building:.{1,}/) || key.match(/^roof:.{1,}/)) continue;
+             } // leave `indoor` tag on the area

 
 

-         while (suffLen < l) {
-           var currChar = str.charAt(l - suffLen - 1);

 
 

-           if (currChar === c && !invert) {
-             suffLen++;
-           } else if (currChar !== c && invert) {
-             suffLen++;
-           } else {
-             break;
-           }
-         }
+             if (isIndoorArea && key === 'indoor') {
+               continue;
+             } // copy the tag from the entity to the point

 
 

-         return str.substr(0, l - suffLen);
-       }

 
 

-       function findClosingBracket(str, b) {
-         if (str.indexOf(b[1]) === -1) {
-           return -1;
-         }
+             pointTags[key] = entityTags[key]; // leave addresses and some other tags so they're on both features

 
 

-         var l = str.length;
-         var level = 0,
-             i = 0;
+             if (keysToCopyAndRetain.indexOf(key) !== -1 || key.match(/^addr:.{1,}/)) {
+               continue;
+             } else if (isIndoorArea && key === 'level') {
+               // leave `level` on both features
+               continue;
+             } // remove the tag from the entity

 
 

-         for (; i < l; i++) {
-           if (str[i] === '\\') {
-             i++;
-           } else if (str[i] === b[0]) {
-             level++;
-           } else if (str[i] === b[1]) {
-             level--;

 
 

-             if (level < 0) {
-               return i;
-             }
+             delete entityTags[key];

            }
            }

-         }
-
-         return -1;
-       }
-
-       function checkSanitizeDeprecation(opt) {
-         if (opt && opt.sanitize && !opt.silent) {
-           console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');
-         }
-       } // copied from https://stackoverflow.com/a/5450113/806777

 
 

-
-       function repeatString(pattern, count) {
-         if (count < 1) {
-           return '';
-         }
-
-         var result = '';
-
-         while (count > 1) {
-           if (count & 1) {
-             result += pattern;
+           if (!isBuilding && !isIndoorArea && fromGeometry === 'area') {
+             // ensure that areas keep area geometry
+             entityTags.area = 'yes';

            }
 
            }
 

-           count >>= 1;
-           pattern += pattern;
+           var replacement = osmNode({
+             loc: extractedLoc,
+             tags: pointTags
+           });
+           graph = graph.replace(replacement);
+           extractedNodeID = replacement.id;
+           return graph.replace(entity.update({
+             tags: entityTags
+           }));

          }
 
          }
 

-         return result + pattern;
-       }
-
-       var helpers = {
-         escape: escape$1,
-         unescape: unescape$1,
-         edit: edit,
-         cleanUrl: cleanUrl,
-         resolveUrl: resolveUrl,
-         noopTest: noopTest,
-         merge: merge$1,
-         splitCells: splitCells,
-         rtrim: rtrim$1,
-         findClosingBracket: findClosingBracket,
-         checkSanitizeDeprecation: checkSanitizeDeprecation,
-         repeatString: repeatString
-       };
-
-       var defaults$1 = defaults.defaults;
-       var rtrim$2 = helpers.rtrim,
-           splitCells$1 = helpers.splitCells,
-           _escape = helpers.escape,
-           findClosingBracket$1 = helpers.findClosingBracket;
-
-       function outputLink(cap, link, raw) {
-         var href = link.href;
-         var title = link.title ? _escape(link.title) : null;
-         var text = cap[1].replace(/\\([\[\]])/g, '$1');
+         action.getExtractedNodeID = function () {
+           return extractedNodeID;
+         };

 
 

-         if (cap[0].charAt(0) !== '!') {
-           return {
-             type: 'link',
-             raw: raw,
-             href: href,
-             title: title,
-             text: text
-           };
-         } else {
-           return {
-             type: 'image',
-             raw: raw,
-             href: href,
-             title: title,
-             text: _escape(text)
-           };
-         }
+         return action;

        }
 
        }
 

-       function indentCodeCompensation(raw, text) {
-         var matchIndentToCode = raw.match(/^(\s+)(?:```)/);
+       //
+       // This is the inverse of `iD.actionSplit`.
+       //
+       // Reference:
+       //   https://github.com/systemed/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MergeWaysAction.as
+       //   https://github.com/openstreetmap/josm/blob/mirror/src/org/openstreetmap/josm/actions/CombineWayAction.java
+       //

 
 

-         if (matchIndentToCode === null) {
-           return text;
+       function actionJoin(ids) {
+         function groupEntitiesByGeometry(graph) {
+           var entities = ids.map(function (id) {
+             return graph.entity(id);
+           });
+           return Object.assign({
+             line: []
+           }, utilArrayGroupBy(entities, function (entity) {
+             return entity.geometry(graph);
+           }));

          }
 
          }
 

-         var indentToCode = matchIndentToCode[1];
-         return text.split('\n').map(function (node) {
-           var matchIndentInNode = node.match(/^\s+/);
+         var action = function action(graph) {
+           var ways = ids.map(graph.entity, graph); // if any of the ways are sided (e.g. coastline, cliff, kerb)
+           // sort them first so they establish the overall order - #6033

 
 

-           if (matchIndentInNode === null) {
-             return node;
-           }
+           ways.sort(function (a, b) {
+             var aSided = a.isSided();
+             var bSided = b.isSided();
+             return aSided && !bSided ? -1 : bSided && !aSided ? 1 : 0;
+           }); // Prefer to keep an existing way.
+           // if there are multiple existing ways, keep the oldest one
+           // the oldest way is determined by the ID of the way

 
 

-           var _matchIndentInNode = _slicedToArray(matchIndentInNode, 1),
-               indentInNode = _matchIndentInNode[0];
+           var survivorID = (ways.filter(function (way) {
+             return !way.isNew();
+           }).sort(function (a, b) {
+             return +a.osmId() - +b.osmId();
+           })[0] || ways[0]).id;
+           var sequences = osmJoinWays(ways, graph);
+           var joined = sequences[0]; // We might need to reverse some of these ways before joining them.  #4688
+           // `joined.actions` property will contain any actions we need to apply.

 
 

-           if (indentInNode.length >= indentToCode.length) {
-             return node.slice(indentToCode.length);
-           }
+           graph = sequences.actions.reduce(function (g, action) {
+             return action(g);
+           }, graph);
+           var survivor = graph.entity(survivorID);
+           survivor = survivor.update({
+             nodes: joined.nodes.map(function (n) {
+               return n.id;
+             })
+           });
+           graph = graph.replace(survivor);
+           joined.forEach(function (way) {
+             if (way.id === survivorID) return;
+             graph.parentRelations(way).forEach(function (parent) {
+               graph = graph.replace(parent.replaceMember(way, survivor));
+             });
+             survivor = survivor.mergeTags(way.tags);
+             graph = graph.replace(survivor);
+             graph = actionDeleteWay(way.id)(graph);
+           }); // Finds if the join created a single-member multipolygon,
+           // and if so turns it into a basic area instead

 
 

-           return node;
-         }).join('\n');
-       }
-       /**
-        * Tokenizer
-        */
+           function checkForSimpleMultipolygon() {
+             if (!survivor.isClosed()) return;
+             var multipolygons = graph.parentMultipolygons(survivor).filter(function (multipolygon) {
+               // find multipolygons where the survivor is the only member
+               return multipolygon.members.length === 1;
+             }); // skip if this is the single member of multiple multipolygons

 
 

+             if (multipolygons.length !== 1) return;
+             var multipolygon = multipolygons[0];

 
 

-       var Tokenizer_1 = /*#__PURE__*/function () {
-         function Tokenizer(options) {
-           _classCallCheck(this, Tokenizer);
+             for (var key in survivor.tags) {
+               if (multipolygon.tags[key] && // don't collapse if tags cannot be cleanly merged
+               multipolygon.tags[key] !== survivor.tags[key]) return;
+             }

 
 

-           this.options = options || defaults$1;
-         }
+             survivor = survivor.mergeTags(multipolygon.tags);
+             graph = graph.replace(survivor);
+             graph = actionDeleteRelation(multipolygon.id, true
+             /* allow untagged members */
+             )(graph);
+             var tags = Object.assign({}, survivor.tags);

 
 

-         _createClass(Tokenizer, [{
-           key: "space",
-           value: function space(src) {
-             var cap = this.rules.block.newline.exec(src);
+             if (survivor.geometry(graph) !== 'area') {
+               // ensure the feature persists as an area
+               tags.area = 'yes';
+             }

 
 

-             if (cap) {
-               if (cap[0].length > 1) {
-                 return {
-                   type: 'space',
-                   raw: cap[0]
-                 };
-               }
+             delete tags.type; // remove type=multipolygon

 
 

-               return {
-                 raw: '\n'
-               };
-             }
+             survivor = survivor.update({
+               tags: tags
+             });
+             graph = graph.replace(survivor);

            }
            }

-         }, {
-           key: "code",
-           value: function code(src, tokens) {
-             var cap = this.rules.block.code.exec(src);

 
 

-             if (cap) {
-               var lastToken = tokens[tokens.length - 1]; // An indented code block cannot interrupt a paragraph.
+           checkForSimpleMultipolygon();
+           return graph;
+         }; // Returns the number of nodes the resultant way is expected to have

 
 

-               if (lastToken && lastToken.type === 'paragraph') {
-                 return {
-                   raw: cap[0],
-                   text: cap[0].trimRight()
-                 };
-               }

 
 

-               var text = cap[0].replace(/^ {4}/gm, '');
-               return {
-                 type: 'code',
-                 raw: cap[0],
-                 codeBlockStyle: 'indented',
-                 text: !this.options.pedantic ? rtrim$2(text, '\n') : text
-               };
-             }
-           }
-         }, {
-           key: "fences",
-           value: function fences(src) {
-             var cap = this.rules.block.fences.exec(src);
+         action.resultingWayNodesLength = function (graph) {
+           return ids.reduce(function (count, id) {
+             return count + graph.entity(id).nodes.length;
+           }, 0) - ids.length - 1;
+         };

 
 

-             if (cap) {
-               var raw = cap[0];
-               var text = indentCodeCompensation(raw, cap[3] || '');
-               return {
-                 type: 'code',
-                 raw: raw,
-                 lang: cap[2] ? cap[2].trim() : cap[2],
-                 text: text
-               };
-             }
+         action.disabled = function (graph) {
+           var geometries = groupEntitiesByGeometry(graph);
+
+           if (ids.length < 2 || ids.length !== geometries.line.length) {
+             return 'not_eligible';

            }
            }

-         }, {
-           key: "heading",
-           value: function heading(src) {
-             var cap = this.rules.block.heading.exec(src);

 
 

-             if (cap) {
-               return {
-                 type: 'heading',
-                 raw: cap[0],
-                 depth: cap[1].length,
-                 text: cap[2]
-               };
-             }
+           var joined = osmJoinWays(ids.map(graph.entity, graph), graph);
+
+           if (joined.length > 1) {
+             return 'not_adjacent';

            }
            }

-         }, {
-           key: "nptable",
-           value: function nptable(src) {
-             var cap = this.rules.block.nptable.exec(src);

 
 

-             if (cap) {
-               var item = {
-                 type: 'table',
-                 header: splitCells$1(cap[1].replace(/^ *| *\| *$/g, '')),
-                 align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-                 cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : [],
-                 raw: cap[0]
-               };
+           var i; // All joined ways must belong to the same set of (non-restriction) relations.
+           // Restriction relations have different logic, below, which allows some cases
+           // this prohibits, and prohibits some cases this allows.

 
 

-               if (item.header.length === item.align.length) {
-                 var l = item.align.length;
-                 var i;
+           var sortedParentRelations = function sortedParentRelations(id) {
+             return graph.parentRelations(graph.entity(id)).filter(function (rel) {
+               return !rel.isRestriction() && !rel.isConnectivity();
+             }).sort(function (a, b) {
+               return a.id - b.id;
+             });
+           };

 
 

-                 for (i = 0; i < l; i++) {
-                   if (/^ *-+: *$/.test(item.align[i])) {
-                     item.align[i] = 'right';
-                   } else if (/^ *:-+: *$/.test(item.align[i])) {
-                     item.align[i] = 'center';
-                   } else if (/^ *:-+ *$/.test(item.align[i])) {
-                     item.align[i] = 'left';
-                   } else {
-                     item.align[i] = null;
-                   }
-                 }
+           var relsA = sortedParentRelations(ids[0]);

 
 

-                 l = item.cells.length;
+           for (i = 1; i < ids.length; i++) {
+             var relsB = sortedParentRelations(ids[i]);

 
 

-                 for (i = 0; i < l; i++) {
-                   item.cells[i] = splitCells$1(item.cells[i], item.header.length);
-                 }
+             if (!utilArrayIdentical(relsA, relsB)) {
+               return 'conflicting_relations';
+             }
+           } // Loop through all combinations of path-pairs
+           // to check potential intersections between all pairs

 
 

-                 return item;
+
+           for (i = 0; i < ids.length - 1; i++) {
+             for (var j = i + 1; j < ids.length; j++) {
+               var path1 = graph.childNodes(graph.entity(ids[i])).map(function (e) {
+                 return e.loc;
+               });
+               var path2 = graph.childNodes(graph.entity(ids[j])).map(function (e) {
+                 return e.loc;
+               });
+               var intersections = geoPathIntersections(path1, path2); // Check if intersections are just nodes lying on top of
+               // each other/the line, as opposed to crossing it
+
+               var common = utilArrayIntersection(joined[0].nodes.map(function (n) {
+                 return n.loc.toString();
+               }), intersections.map(function (n) {
+                 return n.toString();
+               }));
+
+               if (common.length !== intersections.length) {
+                 return 'paths_intersect';

                }
              }
            }
                }
              }
            }

-         }, {
-           key: "hr",
-           value: function hr(src) {
-             var cap = this.rules.block.hr.exec(src);

 
 

-             if (cap) {
-               return {
-                 type: 'hr',
-                 raw: cap[0]
-               };
+           var nodeIds = joined[0].nodes.map(function (n) {
+             return n.id;
+           }).slice(1, -1);
+           var relation;
+           var tags = {};
+           var conflicting = false;
+           joined[0].forEach(function (way) {
+             var parents = graph.parentRelations(way);
+             parents.forEach(function (parent) {
+               if ((parent.isRestriction() || parent.isConnectivity()) && parent.members.some(function (m) {
+                 return nodeIds.indexOf(m.id) >= 0;
+               })) {
+                 relation = parent;
+               }
+             });
+
+             for (var k in way.tags) {
+               if (!(k in tags)) {
+                 tags[k] = way.tags[k];
+               } else if (tags[k] && osmIsInterestingTag(k) && tags[k] !== way.tags[k]) {
+                 conflicting = true;
+               }

              }
              }

+           });
+
+           if (relation) {
+             return relation.isRestriction() ? 'restriction' : 'connectivity';

            }
            }

-         }, {
-           key: "blockquote",
-           value: function blockquote(src) {
-             var cap = this.rules.block.blockquote.exec(src);

 
 

-             if (cap) {
-               var text = cap[0].replace(/^ *> ?/gm, '');
-               return {
-                 type: 'blockquote',
-                 raw: cap[0],
-                 text: text
-               };
-             }
+           if (conflicting) {
+             return 'conflicting_tags';

            }
            }

-         }, {
-           key: "list",
-           value: function list(src) {
-             var cap = this.rules.block.list.exec(src);
+         };

 
 

-             if (cap) {
-               var raw = cap[0];
-               var bull = cap[2];
-               var isordered = bull.length > 1;
-               var isparen = bull[bull.length - 1] === ')';
-               var list = {
-                 type: 'list',
-                 raw: raw,
-                 ordered: isordered,
-                 start: isordered ? +bull.slice(0, -1) : '',
-                 loose: false,
-                 items: []
-               }; // Get each top-level item.
+         return action;
+       }

 
 

-               var itemMatch = cap[0].match(this.rules.block.item);
-               var next = false,
-                   item,
-                   space,
-                   b,
-                   addBack,
-                   loose,
-                   istask,
-                   ischecked;
-               var l = itemMatch.length;
+       function actionMerge(ids) {
+         function groupEntitiesByGeometry(graph) {
+           var entities = ids.map(function (id) {
+             return graph.entity(id);
+           });
+           return Object.assign({
+             point: [],
+             area: [],
+             line: [],
+             relation: []
+           }, utilArrayGroupBy(entities, function (entity) {
+             return entity.geometry(graph);
+           }));
+         }

 
 

-               for (var i = 0; i < l; i++) {
-                 item = itemMatch[i];
-                 raw = item; // Remove the list item's bullet
-                 // so it is seen as the next token.
+         var action = function action(graph) {
+           var geometries = groupEntitiesByGeometry(graph);
+           var target = geometries.area[0] || geometries.line[0];
+           var points = geometries.point;
+           points.forEach(function (point) {
+             target = target.mergeTags(point.tags);
+             graph = graph.replace(target);
+             graph.parentRelations(point).forEach(function (parent) {
+               graph = graph.replace(parent.replaceMember(point, target));
+             });
+             var nodes = utilArrayUniq(graph.childNodes(target));
+             var removeNode = point;

 
 

-                 space = item.length;
-                 item = item.replace(/^ *([*+-]|\d+[.)]) ?/, ''); // Outdent whatever the
-                 // list item contains. Hacky.
+             for (var i = 0; i < nodes.length; i++) {
+               var node = nodes[i];

 
 

-                 if (~item.indexOf('\n ')) {
-                   space -= item.length;
-                   item = !this.options.pedantic ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '') : item.replace(/^ {1,4}/gm, '');
-                 } // Determine whether the next list item belongs here.
-                 // Backpedal if it does not belong in this list.
+               if (graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags()) {
+                 continue;
+               } // Found an uninteresting child node on the target way.
+               // Move orig point into its place to preserve point's history. #3683

 
 
 
 

-                 if (i !== l - 1) {
-                   b = this.rules.block.bullet.exec(itemMatch[i + 1])[0];
+               graph = graph.replace(point.update({
+                 tags: {},
+                 loc: node.loc
+               }));
+               target = target.replaceNode(node.id, point.id);
+               graph = graph.replace(target);
+               removeNode = node;
+               break;
+             }

 
 

-                   if (isordered ? b.length === 1 || !isparen && b[b.length - 1] === ')' : b.length > 1 || this.options.smartLists && b !== bull) {
-                     addBack = itemMatch.slice(i + 1).join('\n');
-                     list.raw = list.raw.substring(0, list.raw.length - addBack.length);
-                     i = l - 1;
-                   }
-                 } // Determine whether item is loose or not.
-                 // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
-                 // for discount behavior.
+             graph = graph.remove(removeNode);
+           });

 
 

+           if (target.tags.area === 'yes') {
+             var tags = Object.assign({}, target.tags); // shallow copy

 
 

-                 loose = next || /\n\n(?!\s*$)/.test(item);
+             delete tags.area;

 
 

-                 if (i !== l - 1) {
-                   next = item.charAt(item.length - 1) === '\n';
-                   if (!loose) loose = next;
-                 }
+             if (osmTagSuggestingArea(tags)) {
+               // remove the `area` tag if area geometry is now implied - #3851
+               target = target.update({
+                 tags: tags
+               });
+               graph = graph.replace(target);
+             }
+           }

 
 

-                 if (loose) {
-                   list.loose = true;
-                 } // Check for task list items
+           return graph;
+         };

 
 

+         action.disabled = function (graph) {
+           var geometries = groupEntitiesByGeometry(graph);

 
 

-                 istask = /^\[[ xX]\] /.test(item);
-                 ischecked = undefined;
+           if (geometries.point.length === 0 || geometries.area.length + geometries.line.length !== 1 || geometries.relation.length !== 0) {
+             return 'not_eligible';
+           }
+         };

 
 

-                 if (istask) {
-                   ischecked = item[1] !== ' ';
-                   item = item.replace(/^\[[ xX]\] +/, '');
-                 }
+         return action;
+       }

 
 

-                 list.items.push({
-                   type: 'list_item',
-                   raw: raw,
-                   task: istask,
-                   checked: ischecked,
-                   loose: loose,
-                   text: item
-                 });
-               }
+       //
+       // 1. move all the nodes to a common location
+       // 2. `actionConnect` them

 
 

-               return list;
+       function actionMergeNodes(nodeIDs, loc) {
+         // If there is a single "interesting" node, use that as the location.
+         // Otherwise return the average location of all the nodes.
+         function chooseLoc(graph) {
+           if (!nodeIDs.length) return null;
+           var sum = [0, 0];
+           var interestingCount = 0;
+           var interestingLoc;
+
+           for (var i = 0; i < nodeIDs.length; i++) {
+             var node = graph.entity(nodeIDs[i]);
+
+             if (node.hasInterestingTags()) {
+               interestingLoc = ++interestingCount === 1 ? node.loc : null;

              }
              }

+
+             sum = geoVecAdd(sum, node.loc);

            }
            }

-         }, {
-           key: "html",
-           value: function html(src) {
-             var cap = this.rules.block.html.exec(src);

 
 

-             if (cap) {
-               return {
-                 type: this.options.sanitize ? 'paragraph' : 'html',
-                 raw: cap[0],
-                 pre: !this.options.sanitizer && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
-                 text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0]
-               };
-             }
+           return interestingLoc || geoVecScale(sum, 1 / nodeIDs.length);
+         }
+
+         var action = function action(graph) {
+           if (nodeIDs.length < 2) return graph;
+           var toLoc = loc;
+
+           if (!toLoc) {
+             toLoc = chooseLoc(graph);

            }
            }

-         }, {
-           key: "def",
-           value: function def(src) {
-             var cap = this.rules.block.def.exec(src);

 
 

-             if (cap) {
-               if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
-               var tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
-               return {
-                 tag: tag,
-                 raw: cap[0],
-                 href: cap[2],
-                 title: cap[3]
-               };
+           for (var i = 0; i < nodeIDs.length; i++) {
+             var node = graph.entity(nodeIDs[i]);
+
+             if (node.loc !== toLoc) {
+               graph = graph.replace(node.move(toLoc));

              }
            }
              }
            }

-         }, {
-           key: "table",
-           value: function table(src) {
-             var cap = this.rules.block.table.exec(src);

 
 

-             if (cap) {
-               var item = {
-                 type: 'table',
-                 header: splitCells$1(cap[1].replace(/^ *| *\| *$/g, '')),
-                 align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-                 cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
-               };
+           return actionConnect(nodeIDs)(graph);
+         };

 
 

-               if (item.header.length === item.align.length) {
-                 item.raw = cap[0];
-                 var l = item.align.length;
-                 var i;
+         action.disabled = function (graph) {
+           if (nodeIDs.length < 2) return 'not_eligible';

 
 

-                 for (i = 0; i < l; i++) {
-                   if (/^ *-+: *$/.test(item.align[i])) {
-                     item.align[i] = 'right';
-                   } else if (/^ *:-+: *$/.test(item.align[i])) {
-                     item.align[i] = 'center';
-                   } else if (/^ *:-+ *$/.test(item.align[i])) {
-                     item.align[i] = 'left';
-                   } else {
-                     item.align[i] = null;
-                   }
-                 }
+           for (var i = 0; i < nodeIDs.length; i++) {
+             var entity = graph.entity(nodeIDs[i]);
+             if (entity.type !== 'node') return 'not_eligible';
+           }

 
 

-                 l = item.cells.length;
+           return actionConnect(nodeIDs).disabled(graph);
+         };

 
 

-                 for (i = 0; i < l; i++) {
-                   item.cells[i] = splitCells$1(item.cells[i].replace(/^ *\| *| *\| *$/g, ''), item.header.length);
-                 }
+         return action;
+       }

 
 

-                 return item;
+       function osmChangeset() {
+         if (!(this instanceof osmChangeset)) {
+           return new osmChangeset().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }
+       osmEntity.changeset = osmChangeset;
+       osmChangeset.prototype = Object.create(osmEntity.prototype);
+       Object.assign(osmChangeset.prototype, {
+         type: 'changeset',
+         extent: function extent() {
+           return new geoExtent();
+         },
+         geometry: function geometry() {
+           return 'changeset';
+         },
+         asJXON: function asJXON() {
+           return {
+             osm: {
+               changeset: {
+                 tag: Object.keys(this.tags).map(function (k) {
+                   return {
+                     '@k': k,
+                     '@v': this.tags[k]
+                   };
+                 }, this),
+                 '@version': 0.6,
+                 '@generator': 'iD'

                }
              }
                }
              }

-           }
-         }, {
-           key: "lheading",
-           value: function lheading(src) {
-             var cap = this.rules.block.lheading.exec(src);
+           };
+         },
+         // Generate [osmChange](http://wiki.openstreetmap.org/wiki/OsmChange)
+         // XML. Returns a string.
+         osmChangeJXON: function osmChangeJXON(changes) {
+           var changeset_id = this.id;

 
 

-             if (cap) {
-               return {
-                 type: 'heading',
-                 raw: cap[0],
-                 depth: cap[2].charAt(0) === '=' ? 1 : 2,
-                 text: cap[1]
-               };
-             }
-           }
-         }, {
-           key: "paragraph",
-           value: function paragraph(src) {
-             var cap = this.rules.block.paragraph.exec(src);
+           function nest(x, order) {
+             var groups = {};

 
 

-             if (cap) {
-               return {
-                 type: 'paragraph',
-                 raw: cap[0],
-                 text: cap[1].charAt(cap[1].length - 1) === '\n' ? cap[1].slice(0, -1) : cap[1]
-               };
+             for (var i = 0; i < x.length; i++) {
+               var tagName = Object.keys(x[i])[0];
+               if (!groups[tagName]) groups[tagName] = [];
+               groups[tagName].push(x[i][tagName]);

              }
              }

-           }
-         }, {
-           key: "text",
-           value: function text(src, tokens) {
-             var cap = this.rules.block.text.exec(src);

 
 

-             if (cap) {
-               var lastToken = tokens[tokens.length - 1];
+             var ordered = {};
+             order.forEach(function (o) {
+               if (groups[o]) ordered[o] = groups[o];
+             });
+             return ordered;
+           } // sort relations in a changeset by dependencies

 
 

-               if (lastToken && lastToken.type === 'text') {
-                 return {
-                   raw: cap[0],
-                   text: cap[0]
-                 };
-               }

 
 

-               return {
-                 type: 'text',
-                 raw: cap[0],
-                 text: cap[0]
-               };
-             }
-           }
-         }, {
-           key: "escape",
-           value: function escape(src) {
-             var cap = this.rules.inline.escape.exec(src);
+           function sort(changes) {
+             // find a referenced relation in the current changeset
+             function resolve(item) {
+               return relations.find(function (relation) {
+                 return item.keyAttributes.type === 'relation' && item.keyAttributes.ref === relation['@id'];
+               });
+             } // a new item is an item that has not been already processed

 
 

-             if (cap) {
-               return {
-                 type: 'escape',
-                 raw: cap[0],
-                 text: _escape(cap[1])
-               };
+
+             function isNew(item) {
+               return !sorted[item['@id']] && !processing.find(function (proc) {
+                 return proc['@id'] === item['@id'];
+               });

              }
              }

-           }
-         }, {
-           key: "tag",
-           value: function tag(src, inLink, inRawBlock) {
-             var cap = this.rules.inline.tag.exec(src);

 
 

-             if (cap) {
-               if (!inLink && /^<a /i.test(cap[0])) {
-                 inLink = true;
-               } else if (inLink && /^<\/a>/i.test(cap[0])) {
-                 inLink = false;
-               }
+             var processing = [];
+             var sorted = {};
+             var relations = changes.relation;
+             if (!relations) return changes;

 
 

-               if (!inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
-                 inRawBlock = true;
-               } else if (inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
-                 inRawBlock = false;
+             for (var i = 0; i < relations.length; i++) {
+               var relation = relations[i]; // skip relation if already sorted
+
+               if (!sorted[relation['@id']]) {
+                 processing.push(relation);

                }
 
                }
 

-               return {
-                 type: this.options.sanitize ? 'text' : 'html',
-                 raw: cap[0],
-                 inLink: inLink,
-                 inRawBlock: inRawBlock,
-                 text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0]
-               };
+               while (processing.length > 0) {
+                 var next = processing[0],
+                     deps = next.member.map(resolve).filter(Boolean).filter(isNew);
+
+                 if (deps.length === 0) {
+                   sorted[next['@id']] = next;
+                   processing.shift();
+                 } else {
+                   processing = deps.concat(processing);
+                 }
+               }

              }
              }

+
+             changes.relation = Object.values(sorted);
+             return changes;

            }
            }

-         }, {
-           key: "link",
-           value: function link(src) {
-             var cap = this.rules.inline.link.exec(src);

 
 

-             if (cap) {
-               var lastParenIndex = findClosingBracket$1(cap[2], '()');
+           function rep(entity) {
+             return entity.asJXON(changeset_id);
+           }
+
+           return {
+             osmChange: {
+               '@version': 0.6,
+               '@generator': 'iD',
+               'create': sort(nest(changes.created.map(rep), ['node', 'way', 'relation'])),
+               'modify': nest(changes.modified.map(rep), ['node', 'way', 'relation']),
+               'delete': Object.assign(nest(changes.deleted.map(rep), ['relation', 'way', 'node']), {
+                 '@if-unused': true
+               })
+             }
+           };
+         },
+         asGeoJSON: function asGeoJSON() {
+           return {};
+         }
+       });

 
 

-               if (lastParenIndex > -1) {
-                 var start = cap[0].indexOf('!') === 0 ? 5 : 4;
-                 var linkLen = start + cap[1].length + lastParenIndex;
-                 cap[2] = cap[2].substring(0, lastParenIndex);
-                 cap[0] = cap[0].substring(0, linkLen).trim();
-                 cap[3] = '';
-               }
+       function osmNote() {
+         if (!(this instanceof osmNote)) {
+           return new osmNote().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }

 
 

-               var href = cap[2];
-               var title = '';
+       osmNote.id = function () {
+         return osmNote.id.next--;
+       };

 
 

-               if (this.options.pedantic) {
-                 var link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);
+       osmNote.id.next = -1;
+       Object.assign(osmNote.prototype, {
+         type: 'note',
+         initialize: function initialize(sources) {
+           for (var i = 0; i < sources.length; ++i) {
+             var source = sources[i];

 
 

-                 if (link) {
-                   href = link[1];
-                   title = link[3];
+             for (var prop in source) {
+               if (Object.prototype.hasOwnProperty.call(source, prop)) {
+                 if (source[prop] === undefined) {
+                   delete this[prop];

                  } else {
                  } else {

-                   title = '';
+                   this[prop] = source[prop];

                  }
                  }

-               } else {
-                 title = cap[3] ? cap[3].slice(1, -1) : '';

                }
                }

-
-               href = href.trim().replace(/^<([\s\S]*)>$/, '$1');
-               var token = outputLink(cap, {
-                 href: href ? href.replace(this.rules.inline._escapes, '$1') : href,
-                 title: title ? title.replace(this.rules.inline._escapes, '$1') : title
-               }, cap[0]);
-               return token;

              }
            }
              }
            }

-         }, {
-           key: "reflink",
-           value: function reflink(src, links) {
-             var cap;
-
-             if ((cap = this.rules.inline.reflink.exec(src)) || (cap = this.rules.inline.nolink.exec(src))) {
-               var link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
-               link = links[link.toLowerCase()];
-
-               if (!link || !link.href) {
-                 var text = cap[0].charAt(0);
-                 return {
-                   type: 'text',
-                   raw: text,
-                   text: text
-                 };
-               }

 
 

-               var token = outputLink(cap, link, cap[0]);
-               return token;
-             }
+           if (!this.id) {
+             this.id = osmNote.id().toString();

            }
            }

-         }, {
-           key: "strong",
-           value: function strong(src, maskedSrc) {
-             var prevChar = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
-             var match = this.rules.inline.strong.start.exec(src);

 
 

-             if (match && (!match[1] || match[1] && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar)))) {
-               maskedSrc = maskedSrc.slice(-1 * src.length);
-               var endReg = match[0] === '**' ? this.rules.inline.strong.endAst : this.rules.inline.strong.endUnd;
-               endReg.lastIndex = 0;
-               var cap;
+           return this;
+         },
+         extent: function extent() {
+           return new geoExtent(this.loc);
+         },
+         update: function update(attrs) {
+           return osmNote(this, attrs); // {v: 1 + (this.v || 0)}
+         },
+         isNew: function isNew() {
+           return this.id < 0;
+         },
+         move: function move(loc) {
+           return this.update({
+             loc: loc
+           });
+         }
+       });

 
 

-               while ((match = endReg.exec(maskedSrc)) != null) {
-                 cap = this.rules.inline.strong.middle.exec(maskedSrc.slice(0, match.index + 3));
+       function osmRelation() {
+         if (!(this instanceof osmRelation)) {
+           return new osmRelation().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }
+       osmEntity.relation = osmRelation;
+       osmRelation.prototype = Object.create(osmEntity.prototype);

 
 

-                 if (cap) {
-                   return {
-                     type: 'strong',
-                     raw: src.slice(0, cap[0].length),
-                     text: src.slice(2, cap[0].length - 2)
-                   };
-                 }
-               }
-             }
-           }
-         }, {
-           key: "em",
-           value: function em(src, maskedSrc) {
-             var prevChar = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
-             var match = this.rules.inline.em.start.exec(src);
+       osmRelation.creationOrder = function (a, b) {
+         var aId = parseInt(osmEntity.id.toOSM(a.id), 10);
+         var bId = parseInt(osmEntity.id.toOSM(b.id), 10);
+         if (aId < 0 || bId < 0) return aId - bId;
+         return bId - aId;
+       };

 
 

-             if (match && (!match[1] || match[1] && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar)))) {
-               maskedSrc = maskedSrc.slice(-1 * src.length);
-               var endReg = match[0] === '*' ? this.rules.inline.em.endAst : this.rules.inline.em.endUnd;
-               endReg.lastIndex = 0;
-               var cap;
+       Object.assign(osmRelation.prototype, {
+         type: 'relation',
+         members: [],
+         copy: function copy(resolver, copies) {
+           if (copies[this.id]) return copies[this.id];
+           var copy = osmEntity.prototype.copy.call(this, resolver, copies);
+           var members = this.members.map(function (member) {
+             return Object.assign({}, member, {
+               id: resolver.entity(member.id).copy(resolver, copies).id
+             });
+           });
+           copy = copy.update({
+             members: members
+           });
+           copies[this.id] = copy;
+           return copy;
+         },
+         extent: function extent(resolver, memo) {
+           return resolver["transient"](this, 'extent', function () {
+             if (memo && memo[this.id]) return geoExtent();
+             memo = memo || {};
+             memo[this.id] = true;
+             var extent = geoExtent();

 
 

-               while ((match = endReg.exec(maskedSrc)) != null) {
-                 cap = this.rules.inline.em.middle.exec(maskedSrc.slice(0, match.index + 2));
+             for (var i = 0; i < this.members.length; i++) {
+               var member = resolver.hasEntity(this.members[i].id);

 
 

-                 if (cap) {
-                   return {
-                     type: 'em',
-                     raw: src.slice(0, cap[0].length),
-                     text: src.slice(1, cap[0].length - 1)
-                   };
-                 }
+               if (member) {
+                 extent._extend(member.extent(resolver, memo));

                }
              }
                }
              }

-           }
-         }, {
-           key: "codespan",
-           value: function codespan(src) {
-             var cap = this.rules.inline.code.exec(src);

 
 

-             if (cap) {
-               var text = cap[2].replace(/\n/g, ' ');
-               var hasNonSpaceChars = /[^ ]/.test(text);
-               var hasSpaceCharsOnBothEnds = text.startsWith(' ') && text.endsWith(' ');
+             return extent;
+           });
+         },
+         geometry: function geometry(graph) {
+           return graph["transient"](this, 'geometry', function () {
+             return this.isMultipolygon() ? 'area' : 'relation';
+           });
+         },
+         isDegenerate: function isDegenerate() {
+           return this.members.length === 0;
+         },
+         // Return an array of members, each extended with an 'index' property whose value
+         // is the member index.
+         indexedMembers: function indexedMembers() {
+           var result = new Array(this.members.length);

 
 

-               if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
-                 text = text.substring(1, text.length - 1);
-               }
+           for (var i = 0; i < this.members.length; i++) {
+             result[i] = Object.assign({}, this.members[i], {
+               index: i
+             });
+           }

 
 

-               text = _escape(text, true);
-               return {
-                 type: 'codespan',
-                 raw: cap[0],
-                 text: text
-               };
+           return result;
+         },
+         // Return the first member with the given role. A copy of the member object
+         // is returned, extended with an 'index' property whose value is the member index.
+         memberByRole: function memberByRole(role) {
+           for (var i = 0; i < this.members.length; i++) {
+             if (this.members[i].role === role) {
+               return Object.assign({}, this.members[i], {
+                 index: i
+               });

              }
            }
              }
            }

-         }, {
-           key: "br",
-           value: function br(src) {
-             var cap = this.rules.inline.br.exec(src);
+         },
+         // Same as memberByRole, but returns all members with the given role
+         membersByRole: function membersByRole(role) {
+           var result = [];

 
 

-             if (cap) {
-               return {
-                 type: 'br',
-                 raw: cap[0]
-               };
+           for (var i = 0; i < this.members.length; i++) {
+             if (this.members[i].role === role) {
+               result.push(Object.assign({}, this.members[i], {
+                 index: i
+               }));

              }
            }
              }
            }

-         }, {
-           key: "del",
-           value: function del(src) {
-             var cap = this.rules.inline.del.exec(src);

 
 

-             if (cap) {
-               return {
-                 type: 'del',
-                 raw: cap[0],
-                 text: cap[1]
-               };
+           return result;
+         },
+         // Return the first member with the given id. A copy of the member object
+         // is returned, extended with an 'index' property whose value is the member index.
+         memberById: function memberById(id) {
+           for (var i = 0; i < this.members.length; i++) {
+             if (this.members[i].id === id) {
+               return Object.assign({}, this.members[i], {
+                 index: i
+               });

              }
            }
              }
            }

-         }, {
-           key: "autolink",
-           value: function autolink(src, mangle) {
-             var cap = this.rules.inline.autolink.exec(src);
-
-             if (cap) {
-               var text, href;
-
-               if (cap[2] === '@') {
-                 text = _escape(this.options.mangle ? mangle(cap[1]) : cap[1]);
-                 href = 'mailto:' + text;
-               } else {
-                 text = _escape(cap[1]);
-                 href = text;
-               }
-
-               return {
-                 type: 'link',
-                 raw: cap[0],
-                 text: text,
-                 href: href,
-                 tokens: [{
-                   type: 'text',
-                   raw: text,
-                   text: text
-                 }]
-               };
+         },
+         // Return the first member with the given id and role. A copy of the member object
+         // is returned, extended with an 'index' property whose value is the member index.
+         memberByIdAndRole: function memberByIdAndRole(id, role) {
+           for (var i = 0; i < this.members.length; i++) {
+             if (this.members[i].id === id && this.members[i].role === role) {
+               return Object.assign({}, this.members[i], {
+                 index: i
+               });

              }
            }
              }
            }

-         }, {
-           key: "url",
-           value: function url(src, mangle) {
-             var cap;
-
-             if (cap = this.rules.inline.url.exec(src)) {
-               var text, href;
-
-               if (cap[2] === '@') {
-                 text = _escape(this.options.mangle ? mangle(cap[0]) : cap[0]);
-                 href = 'mailto:' + text;
-               } else {
-                 // do extended autolink path validation
-                 var prevCapZero;
-
-                 do {
-                   prevCapZero = cap[0];
-                   cap[0] = this.rules.inline._backpedal.exec(cap[0])[0];
-                 } while (prevCapZero !== cap[0]);
-
-                 text = _escape(cap[0]);
+         },
+         addMember: function addMember(member, index) {
+           var members = this.members.slice();
+           members.splice(index === undefined ? members.length : index, 0, member);
+           return this.update({
+             members: members
+           });
+         },
+         updateMember: function updateMember(member, index) {
+           var members = this.members.slice();
+           members.splice(index, 1, Object.assign({}, members[index], member));
+           return this.update({
+             members: members
+           });
+         },
+         removeMember: function removeMember(index) {
+           var members = this.members.slice();
+           members.splice(index, 1);
+           return this.update({
+             members: members
+           });
+         },
+         removeMembersWithID: function removeMembersWithID(id) {
+           var members = this.members.filter(function (m) {
+             return m.id !== id;
+           });
+           return this.update({
+             members: members
+           });
+         },
+         moveMember: function moveMember(fromIndex, toIndex) {
+           var members = this.members.slice();
+           members.splice(toIndex, 0, members.splice(fromIndex, 1)[0]);
+           return this.update({
+             members: members
+           });
+         },
+         // Wherever a member appears with id `needle.id`, replace it with a member
+         // with id `replacement.id`, type `replacement.type`, and the original role,
+         // By default, adding a duplicate member (by id and role) is prevented.
+         // Return an updated relation.
+         replaceMember: function replaceMember(needle, replacement, keepDuplicates) {
+           if (!this.memberById(needle.id)) return this;
+           var members = [];

 
 

-                 if (cap[1] === 'www.') {
-                   href = 'http://' + text;
-                 } else {
-                   href = text;
-                 }
-               }
+           for (var i = 0; i < this.members.length; i++) {
+             var member = this.members[i];

 
 

-               return {
-                 type: 'link',
-                 raw: cap[0],
-                 text: text,
-                 href: href,
-                 tokens: [{
-                   type: 'text',
-                   raw: text,
-                   text: text
-                 }]
-               };
+             if (member.id !== needle.id) {
+               members.push(member);
+             } else if (keepDuplicates || !this.memberByIdAndRole(replacement.id, member.role)) {
+               members.push({
+                 id: replacement.id,
+                 type: replacement.type,
+                 role: member.role
+               });

              }
            }
              }
            }

-         }, {
-           key: "inlineText",
-           value: function inlineText(src, inRawBlock, smartypants) {
-             var cap = this.rules.inline.text.exec(src);

 
 

-             if (cap) {
-               var text;
+           return this.update({
+             members: members
+           });
+         },
+         asJXON: function asJXON(changeset_id) {
+           var r = {
+             relation: {
+               '@id': this.osmId(),
+               '@version': this.version || 0,
+               member: this.members.map(function (member) {
+                 return {
+                   keyAttributes: {
+                     type: member.type,
+                     role: member.role,
+                     ref: osmEntity.id.toOSM(member.id)
+                   }
+                 };
+               }, this),
+               tag: Object.keys(this.tags).map(function (k) {
+                 return {
+                   keyAttributes: {
+                     k: k,
+                     v: this.tags[k]
+                   }
+                 };
+               }, this)
+             }
+           };

 
 

-               if (inRawBlock) {
-                 text = this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0];
-               } else {
-                 text = _escape(this.options.smartypants ? smartypants(cap[0]) : cap[0]);
-               }
+           if (changeset_id) {
+             r.relation['@changeset'] = changeset_id;
+           }

 
 

+           return r;
+         },
+         asGeoJSON: function asGeoJSON(resolver) {
+           return resolver["transient"](this, 'GeoJSON', function () {
+             if (this.isMultipolygon()) {

                return {
                return {

-                 type: 'text',
-                 raw: cap[0],
-                 text: text
+                 type: 'MultiPolygon',
+                 coordinates: this.multipolygon(resolver)
+               };
+             } else {
+               return {
+                 type: 'FeatureCollection',
+                 properties: this.tags,
+                 features: this.members.map(function (member) {
+                   return Object.assign({
+                     role: member.role
+                   }, resolver.entity(member.id).asGeoJSON(resolver));
+                 })

                };
              }
                };
              }

+           });
+         },
+         area: function area(resolver) {
+           return resolver["transient"](this, 'area', function () {
+             return d3_geoArea(this.asGeoJSON(resolver));
+           });
+         },
+         isMultipolygon: function isMultipolygon() {
+           return this.tags.type === 'multipolygon';
+         },
+         isComplete: function isComplete(resolver) {
+           for (var i = 0; i < this.members.length; i++) {
+             if (!resolver.hasEntity(this.members[i].id)) {
+               return false;
+             }

            }
            }

-         }]);
-
-         return Tokenizer;
-       }();
-
-       var noopTest$1 = helpers.noopTest,
-           edit$1 = helpers.edit,
-           merge$2 = helpers.merge;
-       /**
-        * Block-Level Grammar
-        */
-
-       var block = {
-         newline: /^\n+/,
-         code: /^( {4}[^\n]+\n*)+/,
-         fences: /^ {0,3}(`{3,}(?=[^`\n]*\n)|~{3,})([^\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/,
-         hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
-         heading: /^ {0,3}(#{1,6}) +([^\n]*?)(?: +#+)? *(?:\n+|$)/,
-         blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
-         list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
-         html: '^ {0,3}(?:' // optional indentation
-         + '<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
-         + '|comment[^\\n]*(\\n+|$)' // (2)
-         + '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
-         + '|<![A-Z][\\s\\S]*?(?:>\\n*|$)' // (4)
-         + '|<!\\[CDATA\\[[\\s\\S]*?(?:\\]\\]>\\n*|$)' // (5)
-         + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' // (6)
-         + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) open tag
-         + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) closing tag
-         + ')',
-         def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
-         nptable: noopTest$1,
-         table: noopTest$1,
-         lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
-         // regex template, placeholders will be replaced according to different paragraph
-         // interruption rules of commonmark and the original markdown spec:
-         _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html)[^\n]+)*)/,
-         text: /^[^\n]+/
-       };
-       block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/;
-       block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
-       block.def = edit$1(block.def).replace('label', block._label).replace('title', block._title).getRegex();
-       block.bullet = /(?:[*+-]|\d{1,9}[.)])/;
-       block.item = /^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/;
-       block.item = edit$1(block.item, 'gm').replace(/bull/g, block.bullet).getRegex();
-       block.list = edit$1(block.list).replace(/bull/g, block.bullet).replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))').replace('def', '\\n+(?=' + block.def.source + ')').getRegex();
-       block._tag = 'address|article|aside|base|basefont|blockquote|body|caption' + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' + '|track|ul';
-       block._comment = /<!--(?!-?>)[\s\S]*?(?:-->|$)/;
-       block.html = edit$1(block.html, 'i').replace('comment', block._comment).replace('tag', block._tag).replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/).getRegex();
-       block.paragraph = edit$1(block._paragraph).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
-       .replace('blockquote', ' {0,3}>').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
-       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
-       .getRegex();
-       block.blockquote = edit$1(block.blockquote).replace('paragraph', block.paragraph).getRegex();
-       /**
-        * Normal Block Grammar
-        */
-
-       block.normal = merge$2({}, block);
-       /**
-        * GFM Block Grammar
-        */
-
-       block.gfm = merge$2({}, block.normal, {
-         nptable: '^ *([^|\\n ].*\\|.*)\\n' // Header
-         + ' {0,3}([-:]+ *\\|[-| :]*)' // Align
-         + '(?:\\n((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)',
-         // Cells
-         table: '^ *\\|(.+)\\n' // Header
-         + ' {0,3}\\|?( *[-:]+[-| :]*)' // Align
-         + '(?:\\n *((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells
-
-       });
-       block.gfm.nptable = edit$1(block.gfm.nptable).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('blockquote', ' {0,3}>').replace('code', ' {4}[^\\n]').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
-       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
-       .getRegex();
-       block.gfm.table = edit$1(block.gfm.table).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} ').replace('blockquote', ' {0,3}>').replace('code', ' {4}[^\\n]').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
-       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
-       .getRegex();
-       /**
-        * Pedantic grammar (original John Gruber's loose markdown specification)
-        */
-
-       block.pedantic = merge$2({}, block.normal, {
-         html: edit$1('^ *(?:comment *(?:\\n|\\s*$)' + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
-         + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))').replace('comment', block._comment).replace(/tag/g, '(?!(?:' + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub' + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)' + '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b').getRegex(),
-         def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
-         heading: /^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/,
-         fences: noopTest$1,
-         // fences not supported
-         paragraph: edit$1(block.normal._paragraph).replace('hr', block.hr).replace('heading', ' *#{1,6} *[^\n]').replace('lheading', block.lheading).replace('blockquote', ' {0,3}>').replace('|fences', '').replace('|list', '').replace('|html', '').getRegex()
-       });
-       /**
-        * Inline-Level Grammar
-        */
-
-       var inline = {
-         escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
-         autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
-         url: noopTest$1,
-         tag: '^comment' + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
-         + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
-         + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
-         + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
-         + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>',
-         // CDATA section
-         link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
-         reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,
-         nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,
-         reflinkSearch: 'reflink|nolink(?!\\()',
-         strong: {
-           start: /^(?:(\*\*(?=[*punctuation]))|\*\*)(?![\s])|__/,
-           // (1) returns if starts w/ punctuation
-           middle: /^\*\*(?:(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)|\*(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)*?\*)+?\*\*$|^__(?![\s])((?:(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)|_(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)*?_)+?)__$/,
-           endAst: /[^punctuation\s]\*\*(?!\*)|[punctuation]\*\*(?!\*)(?:(?=[punctuation_\s]|$))/,
-           // last char can't be punct, or final * must also be followed by punct (or endline)
-           endUnd: /[^\s]__(?!_)(?:(?=[punctuation*\s])|$)/ // last char can't be a space, and final _ must preceed punct or \s (or endline)

 
 

+           return true;
+         },
+         hasFromViaTo: function hasFromViaTo() {
+           return this.members.some(function (m) {
+             return m.role === 'from';
+           }) && this.members.some(function (m) {
+             return m.role === 'via';
+           }) && this.members.some(function (m) {
+             return m.role === 'to';
+           });

          },
          },

-         em: {
-           start: /^(?:(\*(?=[punctuation]))|\*)(?![*\s])|_/,
-           // (1) returns if starts w/ punctuation
-           middle: /^\*(?:(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)|\*(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)*?\*)+?\*$|^_(?![_\s])(?:(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)|_(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)*?_)+?_$/,
-           endAst: /[^punctuation\s]\*(?!\*)|[punctuation]\*(?!\*)(?:(?=[punctuation_\s]|$))/,
-           // last char can't be punct, or final * must also be followed by punct (or endline)
-           endUnd: /[^\s]_(?!_)(?:(?=[punctuation*\s])|$)/ // last char can't be a space, and final _ must preceed punct or \s (or endline)
-
+         isRestriction: function isRestriction() {
+           return !!(this.tags.type && this.tags.type.match(/^restriction:?/));

          },
          },

-         code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
-         br: /^( {2,}|\\)\n(?!\s*$)/,
-         del: noopTest$1,
-         text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*]|\b_|$)|[^ ](?= {2,}\n)))/,
-         punctuation: /^([\s*punctuation])/
-       }; // list of punctuation marks from common mark spec
-       // without * and _ to workaround cases with double emphasis
-
-       inline._punctuation = '!"#$%&\'()+\\-.,/:;<=>?@\\[\\]`^{|}~';
-       inline.punctuation = edit$1(inline.punctuation).replace(/punctuation/g, inline._punctuation).getRegex(); // sequences em should skip over [title](link), `code`, <html>
-
-       inline._blockSkip = '\\[[^\\]]*?\\]\\([^\\)]*?\\)|`[^`]*?`|<[^>]*?>';
-       inline._overlapSkip = '__[^_]*?__|\\*\\*\\[^\\*\\]*?\\*\\*';
-       inline._comment = edit$1(block._comment).replace('(?:-->|$)', '-->').getRegex();
-       inline.em.start = edit$1(inline.em.start).replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.em.middle = edit$1(inline.em.middle).replace(/punctuation/g, inline._punctuation).replace(/overlapSkip/g, inline._overlapSkip).getRegex();
-       inline.em.endAst = edit$1(inline.em.endAst, 'g').replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.em.endUnd = edit$1(inline.em.endUnd, 'g').replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.strong.start = edit$1(inline.strong.start).replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.strong.middle = edit$1(inline.strong.middle).replace(/punctuation/g, inline._punctuation).replace(/overlapSkip/g, inline._overlapSkip).getRegex();
-       inline.strong.endAst = edit$1(inline.strong.endAst, 'g').replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.strong.endUnd = edit$1(inline.strong.endUnd, 'g').replace(/punctuation/g, inline._punctuation).getRegex();
-       inline.blockSkip = edit$1(inline._blockSkip, 'g').getRegex();
-       inline.overlapSkip = edit$1(inline._overlapSkip, 'g').getRegex();
-       inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g;
-       inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
-       inline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/;
-       inline.autolink = edit$1(inline.autolink).replace('scheme', inline._scheme).replace('email', inline._email).getRegex();
-       inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
-       inline.tag = edit$1(inline.tag).replace('comment', inline._comment).replace('attribute', inline._attribute).getRegex();
-       inline._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
-       inline._href = /<(?:\\[<>]?|[^\s<>\\])*>|[^\s\x00-\x1f]*/;
-       inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
-       inline.link = edit$1(inline.link).replace('label', inline._label).replace('href', inline._href).replace('title', inline._title).getRegex();
-       inline.reflink = edit$1(inline.reflink).replace('label', inline._label).getRegex();
-       inline.reflinkSearch = edit$1(inline.reflinkSearch, 'g').replace('reflink', inline.reflink).replace('nolink', inline.nolink).getRegex();
-       /**
-        * Normal Inline Grammar
-        */
-
-       inline.normal = merge$2({}, inline);
-       /**
-        * Pedantic Inline Grammar
-        */
-
-       inline.pedantic = merge$2({}, inline.normal, {
-         strong: {
-           start: /^__|\*\*/,
-           middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
-           endAst: /\*\*(?!\*)/g,
-           endUnd: /__(?!_)/g
+         isValidRestriction: function isValidRestriction() {
+           if (!this.isRestriction()) return false;
+           var froms = this.members.filter(function (m) {
+             return m.role === 'from';
+           });
+           var vias = this.members.filter(function (m) {
+             return m.role === 'via';
+           });
+           var tos = this.members.filter(function (m) {
+             return m.role === 'to';
+           });
+           if (froms.length !== 1 && this.tags.restriction !== 'no_entry') return false;
+           if (froms.some(function (m) {
+             return m.type !== 'way';
+           })) return false;
+           if (tos.length !== 1 && this.tags.restriction !== 'no_exit') return false;
+           if (tos.some(function (m) {
+             return m.type !== 'way';
+           })) return false;
+           if (vias.length === 0) return false;
+           if (vias.length > 1 && vias.some(function (m) {
+             return m.type !== 'way';
+           })) return false;
+           return true;

          },
          },

-         em: {
-           start: /^_|\*/,
-           middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
-           endAst: /\*(?!\*)/g,
-           endUnd: /_(?!_)/g
+         isConnectivity: function isConnectivity() {
+           return !!(this.tags.type && this.tags.type.match(/^connectivity:?/));

          },
          },

-         link: edit$1(/^!?\[(label)\]\((.*?)\)/).replace('label', inline._label).getRegex(),
-         reflink: edit$1(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace('label', inline._label).getRegex()
-       });
-       /**
-        * GFM Inline Grammar
-        */
+         // Returns an array [A0, ... An], each Ai being an array of node arrays [Nds0, ... Ndsm],
+         // where Nds0 is an outer ring and subsequent Ndsi's (if any i > 0) being inner rings.
+         //
+         // This corresponds to the structure needed for rendering a multipolygon path using a
+         // `evenodd` fill rule, as well as the structure of a GeoJSON MultiPolygon geometry.
+         //
+         // In the case of invalid geometries, this function will still return a result which
+         // includes the nodes of all way members, but some Nds may be unclosed and some inner
+         // rings not matched with the intended outer ring.
+         //
+         multipolygon: function multipolygon(resolver) {
+           var outers = this.members.filter(function (m) {
+             return 'outer' === (m.role || 'outer');
+           });
+           var inners = this.members.filter(function (m) {
+             return 'inner' === m.role;
+           });
+           outers = osmJoinWays(outers, resolver);
+           inners = osmJoinWays(inners, resolver);

 
 

-       inline.gfm = merge$2({}, inline.normal, {
-         escape: edit$1(inline.escape).replace('])', '~|])').getRegex(),
-         _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,
-         url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,
-         _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,
-         del: /^~+(?=\S)([\s\S]*?\S)~+/,
-         text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*~]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))/
-       });
-       inline.gfm.url = edit$1(inline.gfm.url, 'i').replace('email', inline.gfm._extended_email).getRegex();
-       /**
-        * GFM + Line Breaks Inline Grammar
-        */
+           var sequenceToLineString = function sequenceToLineString(sequence) {
+             if (sequence.nodes.length > 2 && sequence.nodes[0] !== sequence.nodes[sequence.nodes.length - 1]) {
+               // close unclosed parts to ensure correct area rendering - #2945
+               sequence.nodes.push(sequence.nodes[0]);
+             }

 
 

-       inline.breaks = merge$2({}, inline.gfm, {
-         br: edit$1(inline.br).replace('{2,}', '*').getRegex(),
-         text: edit$1(inline.gfm.text).replace('\\b_', '\\b_| {2,}\\n').replace(/\{2,\}/g, '*').getRegex()
-       });
-       var rules = {
-         block: block,
-         inline: inline
-       };
+             return sequence.nodes.map(function (node) {
+               return node.loc;
+             });
+           };

 
 

-       var defaults$2 = defaults.defaults;
-       var block$1 = rules.block,
-           inline$1 = rules.inline;
-       var repeatString$1 = helpers.repeatString;
-       /**
-        * smartypants text replacement
-        */
+           outers = outers.map(sequenceToLineString);
+           inners = inners.map(sequenceToLineString);
+           var result = outers.map(function (o) {
+             // Heuristic for detecting counterclockwise winding order. Assumes
+             // that OpenStreetMap polygons are not hemisphere-spanning.
+             return [d3_geoArea({
+               type: 'Polygon',
+               coordinates: [o]
+             }) > 2 * Math.PI ? o.reverse() : o];
+           });

 
 

-       function smartypants(text) {
-         return text // em-dashes
-         .replace(/---/g, "\u2014") // en-dashes
-         .replace(/--/g, "\u2013") // opening singles
-         .replace(/(^|[-\u2014/(\[{"\s])'/g, "$1\u2018") // closing singles & apostrophes
-         .replace(/'/g, "\u2019") // opening doubles
-         .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, "$1\u201C") // closing doubles
-         .replace(/"/g, "\u201D") // ellipses
-         .replace(/\.{3}/g, "\u2026");
-       }
-       /**
-        * mangle email addresses
-        */
+           function findOuter(inner) {
+             var o, outer;

 
 

+             for (o = 0; o < outers.length; o++) {
+               outer = outers[o];

 
 

-       function mangle(text) {
-         var out = '',
-             i,
-             ch;
-         var l = text.length;
+               if (geoPolygonContainsPolygon(outer, inner)) {
+                 return o;
+               }
+             }

 
 

-         for (i = 0; i < l; i++) {
-           ch = text.charCodeAt(i);
+             for (o = 0; o < outers.length; o++) {
+               outer = outers[o];

 
 

-           if (Math.random() > 0.5) {
-             ch = 'x' + ch.toString(16);
+               if (geoPolygonIntersectsPolygon(outer, inner, false)) {
+                 return o;
+               }
+             }

            }
 
            }
 

-           out += '&#' + ch + ';';
-         }
-
-         return out;
-       }
-       /**
-        * Block Lexer
-        */
-
-
-       var Lexer_1 = /*#__PURE__*/function () {
-         function Lexer(options) {
-           _classCallCheck(this, Lexer);
+           for (var i = 0; i < inners.length; i++) {
+             var inner = inners[i];

 
 

-           this.tokens = [];
-           this.tokens.links = Object.create(null);
-           this.options = options || defaults$2;
-           this.options.tokenizer = this.options.tokenizer || new Tokenizer_1();
-           this.tokenizer = this.options.tokenizer;
-           this.tokenizer.options = this.options;
-           var rules = {
-             block: block$1.normal,
-             inline: inline$1.normal
-           };
+             if (d3_geoArea({
+               type: 'Polygon',
+               coordinates: [inner]
+             }) < 2 * Math.PI) {
+               inner = inner.reverse();
+             }

 
 

-           if (this.options.pedantic) {
-             rules.block = block$1.pedantic;
-             rules.inline = inline$1.pedantic;
-           } else if (this.options.gfm) {
-             rules.block = block$1.gfm;
+             var o = findOuter(inners[i]);

 
 

-             if (this.options.breaks) {
-               rules.inline = inline$1.breaks;
+             if (o !== undefined) {
+               result[o].push(inners[i]);

              } else {
              } else {

-               rules.inline = inline$1.gfm;
+               result.push([inners[i]]); // Invalid geometry

              }
            }
 
              }
            }
 

-           this.tokenizer.rules = rules;
+           return result;

          }
          }

-         /**
-          * Expose Rules
-          */
-
-
-         _createClass(Lexer, [{
-           key: "lex",
-
-           /**
-            * Preprocessing
-            */
-           value: function lex(src) {
-             src = src.replace(/\r\n|\r/g, '\n').replace(/\t/g, '    ');
-             this.blockTokens(src, this.tokens, true);
-             this.inline(this.tokens);
-             return this.tokens;
-           }
-           /**
-            * Lexing
-            */
-
-         }, {
-           key: "blockTokens",
-           value: function blockTokens(src) {
-             var tokens = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
-             var top = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
-             src = src.replace(/^ +$/gm, '');
-             var token, i, l, lastToken;
-
-             while (src) {
-               // newline
-               if (token = this.tokenizer.space(src)) {
-                 src = src.substring(token.raw.length);
-
-                 if (token.type) {
-                   tokens.push(token);
-                 }
-
-                 continue;
-               } // code
-
-
-               if (token = this.tokenizer.code(src, tokens)) {
-                 src = src.substring(token.raw.length);
-
-                 if (token.type) {
-                   tokens.push(token);
-                 } else {
-                   lastToken = tokens[tokens.length - 1];
-                   lastToken.raw += '\n' + token.raw;
-                   lastToken.text += '\n' + token.text;
-                 }
-
-                 continue;
-               } // fences
-
-
-               if (token = this.tokenizer.fences(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // heading
-
-
-               if (token = this.tokenizer.heading(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // table no leading pipe (gfm)
-
+       });

 
 

-               if (token = this.tokenizer.nptable(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // hr
+       var QAItem = /*#__PURE__*/function () {
+         function QAItem(loc, service, itemType, id, props) {
+           _classCallCheck$1(this, QAItem);

 
 

+           // Store required properties
+           this.loc = loc;
+           this.service = service.title;
+           this.itemType = itemType; // All issues must have an ID for selection, use generic if none specified

 
 

-               if (token = this.tokenizer.hr(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // blockquote
+           this.id = id ? id : "".concat(QAItem.id());
+           this.update(props); // Some QA services have marker icons to differentiate issues

 
 

+           if (service && typeof service.getIcon === 'function') {
+             this.icon = service.getIcon(itemType);
+           }
+         }

 
 

-               if (token = this.tokenizer.blockquote(src)) {
-                 src = src.substring(token.raw.length);
-                 token.tokens = this.blockTokens(token.text, [], top);
-                 tokens.push(token);
-                 continue;
-               } // list
+         _createClass$1(QAItem, [{
+           key: "update",
+           value: function update(props) {
+             var _this = this;

 
 

+             // You can't override this initial information
+             var loc = this.loc,
+                 service = this.service,
+                 itemType = this.itemType,
+                 id = this.id;
+             Object.keys(props).forEach(function (prop) {
+               return _this[prop] = props[prop];
+             });
+             this.loc = loc;
+             this.service = service;
+             this.itemType = itemType;
+             this.id = id;
+             return this;
+           } // Generic handling for newly created QAItems

 
 

-               if (token = this.tokenizer.list(src)) {
-                 src = src.substring(token.raw.length);
-                 l = token.items.length;
+         }], [{
+           key: "id",
+           value: function id() {
+             return this.nextId--;
+           }
+         }]);

 
 

-                 for (i = 0; i < l; i++) {
-                   token.items[i].tokens = this.blockTokens(token.items[i].text, [], false);
-                 }
+         return QAItem;
+       }();
+       QAItem.nextId = -1;

 
 

-                 tokens.push(token);
-                 continue;
-               } // html
+       //
+       // Optionally, split only the given ways, if multiple ways share
+       // the given node.
+       //
+       // This is the inverse of `iD.actionJoin`.
+       //
+       // For testing convenience, accepts an ID to assign to the new way.
+       // Normally, this will be undefined and the way will automatically
+       // be assigned a new ID.
+       //
+       // Reference:
+       //   https://github.com/systemed/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/SplitWayAction.as
+       //

 
 

+       function actionSplit(nodeIds, newWayIds) {
+         // accept single ID for backwards-compatiblity
+         if (typeof nodeIds === 'string') nodeIds = [nodeIds];

 
 

-               if (token = this.tokenizer.html(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // def
+         var _wayIDs; // the strategy for picking which way will have a new version and which way is newly created

 
 
 
 

-               if (top && (token = this.tokenizer.def(src))) {
-                 src = src.substring(token.raw.length);
+         var _keepHistoryOn = 'longest'; // 'longest', 'first'
+         // The IDs of the ways actually created by running this action

 
 

-                 if (!this.tokens.links[token.tag]) {
-                   this.tokens.links[token.tag] = {
-                     href: token.href,
-                     title: token.title
-                   };
-                 }
+         var _createdWayIDs = [];

 
 

-                 continue;
-               } // table (gfm)
+         function dist(graph, nA, nB) {
+           var locA = graph.entity(nA).loc;
+           var locB = graph.entity(nB).loc;
+           var epsilon = 1e-6;
+           return locA && locB ? geoSphericalDistance(locA, locB) : epsilon;
+         } // If the way is closed, we need to search for a partner node
+         // to split the way at.
+         //
+         // The following looks for a node that is both far away from
+         // the initial node in terms of way segment length and nearby
+         // in terms of beeline-distance. This assures that areas get
+         // split on the most "natural" points (independent of the number
+         // of nodes).
+         // For example: bone-shaped areas get split across their waist
+         // line, circles across the diameter.

 
 
 
 

-               if (token = this.tokenizer.table(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // lheading
+         function splitArea(nodes, idxA, graph) {
+           var lengths = new Array(nodes.length);
+           var length;
+           var i;
+           var best = 0;
+           var idxB;

 
 

+           function wrap(index) {
+             return utilWrap(index, nodes.length);
+           } // calculate lengths

 
 

-               if (token = this.tokenizer.lheading(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // top-level paragraph

 
 

+           length = 0;

 
 

-               if (top && (token = this.tokenizer.paragraph(src))) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // text
+           for (i = wrap(idxA + 1); i !== idxA; i = wrap(i + 1)) {
+             length += dist(graph, nodes[i], nodes[wrap(i - 1)]);
+             lengths[i] = length;
+           }

 
 

+           length = 0;

 
 

-               if (token = this.tokenizer.text(src, tokens)) {
-                 src = src.substring(token.raw.length);
+           for (i = wrap(idxA - 1); i !== idxA; i = wrap(i - 1)) {
+             length += dist(graph, nodes[i], nodes[wrap(i + 1)]);

 
 

-                 if (token.type) {
-                   tokens.push(token);
-                 } else {
-                   lastToken = tokens[tokens.length - 1];
-                   lastToken.raw += '\n' + token.raw;
-                   lastToken.text += '\n' + token.text;
-                 }
+             if (length < lengths[i]) {
+               lengths[i] = length;
+             }
+           } // determine best opposite node to split

 
 

-                 continue;
-               }

 
 

-               if (src) {
-                 var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+           for (i = 0; i < nodes.length; i++) {
+             var cost = lengths[i] / dist(graph, nodes[idxA], nodes[i]);

 
 

-                 if (this.options.silent) {
-                   console.error(errMsg);
-                   break;
-                 } else {
-                   throw new Error(errMsg);
-                 }
-               }
+             if (cost > best) {
+               idxB = i;
+               best = cost;

              }
              }

-
-             return tokens;

            }
            }

-         }, {
-           key: "inline",
-           value: function inline(tokens) {
-             var i, j, k, l2, row, token;
-             var l = tokens.length;
-
-             for (i = 0; i < l; i++) {
-               token = tokens[i];
-
-               switch (token.type) {
-                 case 'paragraph':
-                 case 'text':
-                 case 'heading':
-                   {
-                     token.tokens = [];
-                     this.inlineTokens(token.text, token.tokens);
-                     break;
-                   }
-
-                 case 'table':
-                   {
-                     token.tokens = {
-                       header: [],
-                       cells: []
-                     }; // header
-
-                     l2 = token.header.length;
-
-                     for (j = 0; j < l2; j++) {
-                       token.tokens.header[j] = [];
-                       this.inlineTokens(token.header[j], token.tokens.header[j]);
-                     } // cells
-
-
-                     l2 = token.cells.length;
-
-                     for (j = 0; j < l2; j++) {
-                       row = token.cells[j];
-                       token.tokens.cells[j] = [];
-
-                       for (k = 0; k < row.length; k++) {
-                         token.tokens.cells[j][k] = [];
-                         this.inlineTokens(row[k], token.tokens.cells[j][k]);
-                       }
-                     }
-
-                     break;
-                   }
-
-                 case 'blockquote':
-                   {
-                     this.inline(token.tokens);
-                     break;
-                   }
-
-                 case 'list':
-                   {
-                     l2 = token.items.length;

 
 

-                     for (j = 0; j < l2; j++) {
-                       this.inline(token.items[j].tokens);
-                     }
+           return idxB;
+         }

 
 

-                     break;
-                   }
-               }
-             }
+         function totalLengthBetweenNodes(graph, nodes) {
+           var totalLength = 0;

 
 

-             return tokens;
+           for (var i = 0; i < nodes.length - 1; i++) {
+             totalLength += dist(graph, nodes[i], nodes[i + 1]);

            }
            }

-           /**
-            * Lexing/Compiling
-            */
-
-         }, {
-           key: "inlineTokens",
-           value: function inlineTokens(src) {
-             var tokens = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
-             var inLink = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
-             var inRawBlock = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
-             var prevChar = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : '';
-             var token; // String with links masked to avoid interference with em and strong
-
-             var maskedSrc = src;
-             var match; // Mask out reflinks

 
 

-             if (this.tokens.links) {
-               var links = Object.keys(this.tokens.links);
+           return totalLength;
+         }

 
 

-               if (links.length > 0) {
-                 while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {
-                   if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {
-                     maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString$1('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);
-                   }
-                 }
-               }
-             } // Mask out other blocks
+         function split(graph, nodeId, wayA, newWayId) {
+           var wayB = osmWay({
+             id: newWayId,
+             tags: wayA.tags
+           }); // `wayB` is the NEW way

 
 

+           var origNodes = wayA.nodes.slice();
+           var nodesA;
+           var nodesB;
+           var isArea = wayA.isArea();
+           var isOuter = osmIsOldMultipolygonOuterMember(wayA, graph);

 
 

-             while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
-               maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString$1('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
-             }
+           if (wayA.isClosed()) {
+             var nodes = wayA.nodes.slice(0, -1);
+             var idxA = nodes.indexOf(nodeId);
+             var idxB = splitArea(nodes, idxA, graph);

 
 

-             while (src) {
-               // escape
-               if (token = this.tokenizer.escape(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // tag
+             if (idxB < idxA) {
+               nodesA = nodes.slice(idxA).concat(nodes.slice(0, idxB + 1));
+               nodesB = nodes.slice(idxB, idxA + 1);
+             } else {
+               nodesA = nodes.slice(idxA, idxB + 1);
+               nodesB = nodes.slice(idxB).concat(nodes.slice(0, idxA + 1));
+             }
+           } else {
+             var idx = wayA.nodes.indexOf(nodeId, 1);
+             nodesA = wayA.nodes.slice(0, idx + 1);
+             nodesB = wayA.nodes.slice(idx);
+           }

 
 

+           var lengthA = totalLengthBetweenNodes(graph, nodesA);
+           var lengthB = totalLengthBetweenNodes(graph, nodesB);

 
 

-               if (token = this.tokenizer.tag(src, inLink, inRawBlock)) {
-                 src = src.substring(token.raw.length);
-                 inLink = token.inLink;
-                 inRawBlock = token.inRawBlock;
-                 tokens.push(token);
-                 continue;
-               } // link
+           if (_keepHistoryOn === 'longest' && lengthB > lengthA) {
+             // keep the history on the longer way, regardless of the node count
+             wayA = wayA.update({
+               nodes: nodesB
+             });
+             wayB = wayB.update({
+               nodes: nodesA
+             });
+             var temp = lengthA;
+             lengthA = lengthB;
+             lengthB = temp;
+           } else {
+             wayA = wayA.update({
+               nodes: nodesA
+             });
+             wayB = wayB.update({
+               nodes: nodesB
+             });
+           }

 
 

+           if (wayA.tags.step_count) {
+             // divide up the the step count proportionally between the two ways
+             var stepCount = parseFloat(wayA.tags.step_count);

 
 

-               if (token = this.tokenizer.link(src)) {
-                 src = src.substring(token.raw.length);
+             if (stepCount && // ensure a number
+             isFinite(stepCount) && // ensure positive
+             stepCount > 0 && // ensure integer
+             Math.round(stepCount) === stepCount) {
+               var tagsA = Object.assign({}, wayA.tags);
+               var tagsB = Object.assign({}, wayB.tags);
+               var ratioA = lengthA / (lengthA + lengthB);
+               var countA = Math.round(stepCount * ratioA);
+               tagsA.step_count = countA.toString();
+               tagsB.step_count = (stepCount - countA).toString();
+               wayA = wayA.update({
+                 tags: tagsA
+               });
+               wayB = wayB.update({
+                 tags: tagsB
+               });
+             }
+           }

 
 

-                 if (token.type === 'link') {
-                   token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
-                 }
+           graph = graph.replace(wayA);
+           graph = graph.replace(wayB);
+           graph.parentRelations(wayA).forEach(function (relation) {
+             var member; // Turn restrictions - make sure:
+             // 1. Splitting a FROM/TO way - only `wayA` OR `wayB` remains in relation
+             //    (whichever one is connected to the VIA node/ways)
+             // 2. Splitting a VIA way - `wayB` remains in relation as a VIA way

 
 

-                 tokens.push(token);
-                 continue;
-               } // reflink, nolink
+             if (relation.hasFromViaTo()) {
+               var f = relation.memberByRole('from');
+               var v = relation.membersByRole('via');
+               var t = relation.memberByRole('to');
+               var i; // 1. split a FROM/TO

 
 

+               if (f.id === wayA.id || t.id === wayA.id) {
+                 var keepB = false;

 
 

-               if (token = this.tokenizer.reflink(src, this.tokens.links)) {
-                 src = src.substring(token.raw.length);
+                 if (v.length === 1 && v[0].type === 'node') {
+                   // check via node
+                   keepB = wayB.contains(v[0].id);
+                 } else {
+                   // check via way(s)
+                   for (i = 0; i < v.length; i++) {
+                     if (v[i].type === 'way') {
+                       var wayVia = graph.hasEntity(v[i].id);

 
 

-                 if (token.type === 'link') {
-                   token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
+                       if (wayVia && utilArrayIntersection(wayB.nodes, wayVia.nodes).length) {
+                         keepB = true;
+                         break;
+                       }
+                     }
+                   }

                  }
 
                  }
 

-                 tokens.push(token);
-                 continue;
-               } // strong
+                 if (keepB) {
+                   relation = relation.replaceMember(wayA, wayB);
+                   graph = graph.replace(relation);
+                 } // 2. split a VIA

 
 

+               } else {
+                 for (i = 0; i < v.length; i++) {
+                   if (v[i].type === 'way' && v[i].id === wayA.id) {
+                     member = {
+                       id: wayB.id,
+                       type: 'way',
+                       role: 'via'
+                     };
+                     graph = actionAddMember(relation.id, member, v[i].index + 1)(graph);
+                     break;
+                   }
+                 }
+               } // All other relations (Routes, Multipolygons, etc):
+               // 1. Both `wayA` and `wayB` remain in the relation
+               // 2. But must be inserted as a pair (see `actionAddMember` for details)

 
 

-               if (token = this.tokenizer.strong(src, maskedSrc, prevChar)) {
-                 src = src.substring(token.raw.length);
-                 token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
-                 tokens.push(token);
-                 continue;
-               } // em
+             } else {
+               if (relation === isOuter) {
+                 graph = graph.replace(relation.mergeTags(wayA.tags));
+                 graph = graph.replace(wayA.update({
+                   tags: {}
+                 }));
+                 graph = graph.replace(wayB.update({
+                   tags: {}
+                 }));
+               }

 
 

+               member = {
+                 id: wayB.id,
+                 type: 'way',
+                 role: relation.memberById(wayA.id).role
+               };
+               var insertPair = {
+                 originalID: wayA.id,
+                 insertedID: wayB.id,
+                 nodes: origNodes
+               };
+               graph = actionAddMember(relation.id, member, undefined, insertPair)(graph);
+             }
+           });

 
 

-               if (token = this.tokenizer.em(src, maskedSrc, prevChar)) {
-                 src = src.substring(token.raw.length);
-                 token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
-                 tokens.push(token);
-                 continue;
-               } // code
+           if (!isOuter && isArea) {
+             var multipolygon = osmRelation({
+               tags: Object.assign({}, wayA.tags, {
+                 type: 'multipolygon'
+               }),
+               members: [{
+                 id: wayA.id,
+                 role: 'outer',
+                 type: 'way'
+               }, {
+                 id: wayB.id,
+                 role: 'outer',
+                 type: 'way'
+               }]
+             });
+             graph = graph.replace(multipolygon);
+             graph = graph.replace(wayA.update({
+               tags: {}
+             }));
+             graph = graph.replace(wayB.update({
+               tags: {}
+             }));
+           }

 
 

+           _createdWayIDs.push(wayB.id);

 
 

-               if (token = this.tokenizer.codespan(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // br
+           return graph;
+         }

 
 

+         var action = function action(graph) {
+           _createdWayIDs = [];
+           var newWayIndex = 0;

 
 

-               if (token = this.tokenizer.br(src)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // del (gfm)
+           for (var i = 0; i < nodeIds.length; i++) {
+             var nodeId = nodeIds[i];
+             var candidates = action.waysForNode(nodeId, graph);

 
 

+             for (var j = 0; j < candidates.length; j++) {
+               graph = split(graph, nodeId, candidates[j], newWayIds && newWayIds[newWayIndex]);
+               newWayIndex += 1;
+             }
+           }

 
 

-               if (token = this.tokenizer.del(src)) {
-                 src = src.substring(token.raw.length);
-                 token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
-                 tokens.push(token);
-                 continue;
-               } // autolink
+           return graph;
+         };

 
 

+         action.getCreatedWayIDs = function () {
+           return _createdWayIDs;
+         };

 
 

-               if (token = this.tokenizer.autolink(src, mangle)) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // url (gfm)
+         action.waysForNode = function (nodeId, graph) {
+           var node = graph.entity(nodeId);
+           var splittableParents = graph.parentWays(node).filter(isSplittable);

 
 

+           if (!_wayIDs) {
+             // If the ways to split aren't specified, only split the lines.
+             // If there are no lines to split, split the areas.
+             var hasLine = splittableParents.some(function (parent) {
+               return parent.geometry(graph) === 'line';
+             });

 
 

-               if (!inLink && (token = this.tokenizer.url(src, mangle))) {
-                 src = src.substring(token.raw.length);
-                 tokens.push(token);
-                 continue;
-               } // text
+             if (hasLine) {
+               return splittableParents.filter(function (parent) {
+                 return parent.geometry(graph) === 'line';
+               });
+             }
+           }

 
 

+           return splittableParents;

 
 

-               if (token = this.tokenizer.inlineText(src, inRawBlock, smartypants)) {
-                 src = src.substring(token.raw.length);
-                 prevChar = token.raw.slice(-1);
-                 tokens.push(token);
-                 continue;
-               }
+           function isSplittable(parent) {
+             // If the ways to split are specified, ignore everything else.
+             if (_wayIDs && _wayIDs.indexOf(parent.id) === -1) return false; // We can fake splitting closed ways at their endpoints...

 
 

-               if (src) {
-                 var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+             if (parent.isClosed()) return true; // otherwise, we can't split nodes at their endpoints.

 
 

-                 if (this.options.silent) {
-                   console.error(errMsg);
-                   break;
-                 } else {
-                   throw new Error(errMsg);
-                 }
-               }
+             for (var i = 1; i < parent.nodes.length - 1; i++) {
+               if (parent.nodes[i] === nodeId) return true;

              }
 
              }
 

-             return tokens;
-           }
-         }], [{
-           key: "lex",
-
-           /**
-            * Static Lex Method
-            */
-           value: function lex(src, options) {
-             var lexer = new Lexer(options);
-             return lexer.lex(src);
+             return false;

            }
            }

-           /**
-            * Static Lex Inline Method
-            */
+         };

 
 

-         }, {
-           key: "lexInline",
-           value: function lexInline(src, options) {
-             var lexer = new Lexer(options);
-             return lexer.inlineTokens(src);
-           }
-         }, {
-           key: "rules",
-           get: function get() {
-             return {
-               block: block$1,
-               inline: inline$1
-             };
-           }
-         }]);
+         action.ways = function (graph) {
+           return utilArrayUniq([].concat.apply([], nodeIds.map(function (nodeId) {
+             return action.waysForNode(nodeId, graph);
+           })));
+         };

 
 

-         return Lexer;
-       }();
+         action.disabled = function (graph) {
+           for (var i = 0; i < nodeIds.length; i++) {
+             var nodeId = nodeIds[i];
+             var candidates = action.waysForNode(nodeId, graph);

 
 

-       var defaults$3 = defaults.defaults;
-       var cleanUrl$1 = helpers.cleanUrl,
-           escape$2 = helpers.escape;
-       /**
-        * Renderer
-        */
+             if (candidates.length === 0 || _wayIDs && _wayIDs.length !== candidates.length) {
+               return 'not_eligible';
+             }
+           }
+         };

 
 

-       var Renderer_1 = /*#__PURE__*/function () {
-         function Renderer(options) {
-           _classCallCheck(this, Renderer);
+         action.limitWays = function (val) {
+           if (!arguments.length) return _wayIDs;
+           _wayIDs = val;
+           return action;
+         };

 
 

-           this.options = options || defaults$3;
-         }
+         action.keepHistoryOn = function (val) {
+           if (!arguments.length) return _keepHistoryOn;
+           _keepHistoryOn = val;
+           return action;
+         };

 
 

-         _createClass(Renderer, [{
-           key: "code",
-           value: function code(_code, infostring, escaped) {
-             var lang = (infostring || '').match(/\S*/)[0];
+         return action;
+       }

 
 

-             if (this.options.highlight) {
-               var out = this.options.highlight(_code, lang);
+       function coreGraph(other, mutable) {
+         if (!(this instanceof coreGraph)) return new coreGraph(other, mutable);

 
 

-               if (out != null && out !== _code) {
-                 escaped = true;
-                 _code = out;
-               }
-             }
+         if (other instanceof coreGraph) {
+           var base = other.base();
+           this.entities = Object.assign(Object.create(base.entities), other.entities);
+           this._parentWays = Object.assign(Object.create(base.parentWays), other._parentWays);
+           this._parentRels = Object.assign(Object.create(base.parentRels), other._parentRels);
+         } else {
+           this.entities = Object.create({});
+           this._parentWays = Object.create({});
+           this._parentRels = Object.create({});
+           this.rebase(other || [], [this]);
+         }

 
 

-             if (!lang) {
-               return '<pre><code>' + (escaped ? _code : escape$2(_code, true)) + '</code></pre>\n';
-             }
+         this.transients = {};
+         this._childNodes = {};
+         this.frozen = !mutable;
+       }
+       coreGraph.prototype = {
+         hasEntity: function hasEntity(id) {
+           return this.entities[id];
+         },
+         entity: function entity(id) {
+           var entity = this.entities[id]; //https://github.com/openstreetmap/iD/issues/3973#issuecomment-307052376

 
 

-             return '<pre><code class="' + this.options.langPrefix + escape$2(lang, true) + '">' + (escaped ? _code : escape$2(_code, true)) + '</code></pre>\n';
-           }
-         }, {
-           key: "blockquote",
-           value: function blockquote(quote) {
-             return '<blockquote>\n' + quote + '</blockquote>\n';
-           }
-         }, {
-           key: "html",
-           value: function html(_html) {
-             return _html;
+           if (!entity) {
+             entity = this.entities.__proto__[id]; // eslint-disable-line no-proto

            }
            }

-         }, {
-           key: "heading",
-           value: function heading(text, level, raw, slugger) {
-             if (this.options.headerIds) {
-               return '<h' + level + ' id="' + this.options.headerPrefix + slugger.slug(raw) + '">' + text + '</h' + level + '>\n';
-             } // ignore IDs

 
 

-
-             return '<h' + level + '>' + text + '</h' + level + '>\n';
-           }
-         }, {
-           key: "hr",
-           value: function hr() {
-             return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
-           }
-         }, {
-           key: "list",
-           value: function list(body, ordered, start) {
-             var type = ordered ? 'ol' : 'ul',
-                 startatt = ordered && start !== 1 ? ' start="' + start + '"' : '';
-             return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
-           }
-         }, {
-           key: "listitem",
-           value: function listitem(text) {
-             return '<li>' + text + '</li>\n';
-           }
-         }, {
-           key: "checkbox",
-           value: function checkbox(checked) {
-             return '<input ' + (checked ? 'checked="" ' : '') + 'disabled="" type="checkbox"' + (this.options.xhtml ? ' /' : '') + '> ';
-           }
-         }, {
-           key: "paragraph",
-           value: function paragraph(text) {
-             return '<p>' + text + '</p>\n';
-           }
-         }, {
-           key: "table",
-           value: function table(header, body) {
-             if (body) body = '<tbody>' + body + '</tbody>';
-             return '<table>\n' + '<thead>\n' + header + '</thead>\n' + body + '</table>\n';
-           }
-         }, {
-           key: "tablerow",
-           value: function tablerow(content) {
-             return '<tr>\n' + content + '</tr>\n';
+           if (!entity) {
+             throw new Error('entity ' + id + ' not found');

            }
            }

-         }, {
-           key: "tablecell",
-           value: function tablecell(content, flags) {
-             var type = flags.header ? 'th' : 'td';
-             var tag = flags.align ? '<' + type + ' align="' + flags.align + '">' : '<' + type + '>';
-             return tag + content + '</' + type + '>\n';
-           } // span level renderer

 
 

-         }, {
-           key: "strong",
-           value: function strong(text) {
-             return '<strong>' + text + '</strong>';
-           }
-         }, {
-           key: "em",
-           value: function em(text) {
-             return '<em>' + text + '</em>';
-           }
-         }, {
-           key: "codespan",
-           value: function codespan(text) {
-             return '<code>' + text + '</code>';
-           }
-         }, {
-           key: "br",
-           value: function br() {
-             return this.options.xhtml ? '<br/>' : '<br>';
-           }
-         }, {
-           key: "del",
-           value: function del(text) {
-             return '<del>' + text + '</del>';
+           return entity;
+         },
+         geometry: function geometry(id) {
+           return this.entity(id).geometry(this);
+         },
+         "transient": function transient(entity, key, fn) {
+           var id = entity.id;
+           var transients = this.transients[id] || (this.transients[id] = {});
+
+           if (transients[key] !== undefined) {
+             return transients[key];

            }
            }

-         }, {
-           key: "link",
-           value: function link(href, title, text) {
-             href = cleanUrl$1(this.options.sanitize, this.options.baseUrl, href);

 
 

-             if (href === null) {
-               return text;
-             }
+           transients[key] = fn.call(entity);
+           return transients[key];
+         },
+         parentWays: function parentWays(entity) {
+           var parents = this._parentWays[entity.id];
+           var result = [];

 
 

-             var out = '<a href="' + escape$2(href) + '"';
+           if (parents) {
+             parents.forEach(function (id) {
+               result.push(this.entity(id));
+             }, this);
+           }

 
 

-             if (title) {
-               out += ' title="' + title + '"';
-             }
+           return result;
+         },
+         isPoi: function isPoi(entity) {
+           var parents = this._parentWays[entity.id];
+           return !parents || parents.size === 0;
+         },
+         isShared: function isShared(entity) {
+           var parents = this._parentWays[entity.id];
+           return parents && parents.size > 1;
+         },
+         parentRelations: function parentRelations(entity) {
+           var parents = this._parentRels[entity.id];
+           var result = [];

 
 

-             out += '>' + text + '</a>';
-             return out;
+           if (parents) {
+             parents.forEach(function (id) {
+               result.push(this.entity(id));
+             }, this);

            }
            }

-         }, {
-           key: "image",
-           value: function image(href, title, text) {
-             href = cleanUrl$1(this.options.sanitize, this.options.baseUrl, href);
-
-             if (href === null) {
-               return text;
-             }
-
-             var out = '<img src="' + href + '" alt="' + text + '"';

 
 

-             if (title) {
-               out += ' title="' + title + '"';
-             }
+           return result;
+         },
+         parentMultipolygons: function parentMultipolygons(entity) {
+           return this.parentRelations(entity).filter(function (relation) {
+             return relation.isMultipolygon();
+           });
+         },
+         childNodes: function childNodes(entity) {
+           if (this._childNodes[entity.id]) return this._childNodes[entity.id];
+           if (!entity.nodes) return [];
+           var nodes = [];

 
 

-             out += this.options.xhtml ? '/>' : '>';
-             return out;
-           }
-         }, {
-           key: "text",
-           value: function text(_text) {
-             return _text;
+           for (var i = 0; i < entity.nodes.length; i++) {
+             nodes[i] = this.entity(entity.nodes[i]);

            }
            }

-         }]);
+           this._childNodes[entity.id] = nodes;
+           return this._childNodes[entity.id];
+         },
+         base: function base() {
+           return {
+             'entities': Object.getPrototypeOf(this.entities),
+             'parentWays': Object.getPrototypeOf(this._parentWays),
+             'parentRels': Object.getPrototypeOf(this._parentRels)
+           };
+         },
+         // Unlike other graph methods, rebase mutates in place. This is because it
+         // is used only during the history operation that merges newly downloaded
+         // data into each state. To external consumers, it should appear as if the
+         // graph always contained the newly downloaded data.
+         rebase: function rebase(entities, stack, force) {
+           var base = this.base();
+           var i, j, k, id;

 
 

-         return Renderer;
-       }();
+           for (i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             if (!entity.visible || !force && base.entities[entity.id]) continue; // Merging data into the base graph

 
 

-       /**
-        * TextRenderer
-        * returns only the textual part of the token
-        */
-       var TextRenderer_1 = /*#__PURE__*/function () {
-         function TextRenderer() {
-           _classCallCheck(this, TextRenderer);
-         }
+             base.entities[entity.id] = entity;

 
 

-         _createClass(TextRenderer, [{
-           key: "strong",
-           // no need for block level renderers
-           value: function strong(text) {
-             return text;
-           }
-         }, {
-           key: "em",
-           value: function em(text) {
-             return text;
-           }
-         }, {
-           key: "codespan",
-           value: function codespan(text) {
-             return text;
-           }
-         }, {
-           key: "del",
-           value: function del(text) {
-             return text;
-           }
-         }, {
-           key: "html",
-           value: function html(text) {
-             return text;
-           }
-         }, {
-           key: "text",
-           value: function text(_text) {
-             return _text;
-           }
-         }, {
-           key: "link",
-           value: function link(href, title, text) {
-             return '' + text;
-           }
-         }, {
-           key: "image",
-           value: function image(href, title, text) {
-             return '' + text;
-           }
-         }, {
-           key: "br",
-           value: function br() {
-             return '';
-           }
-         }]);
+             this._updateCalculated(undefined, entity, base.parentWays, base.parentRels); // Restore provisionally-deleted nodes that are discovered to have an extant parent

 
 

-         return TextRenderer;
-       }();

 
 

-       /**
-        * Slugger generates header id
-        */
-       var Slugger_1 = /*#__PURE__*/function () {
-         function Slugger() {
-           _classCallCheck(this, Slugger);
+             if (entity.type === 'way') {
+               for (j = 0; j < entity.nodes.length; j++) {
+                 id = entity.nodes[j];

 
 

-           this.seen = {};
-         }
+                 for (k = 1; k < stack.length; k++) {
+                   var ents = stack[k].entities;

 
 

-         _createClass(Slugger, [{
-           key: "serialize",
-           value: function serialize(value) {
-             return value.toLowerCase().trim() // remove html tags
-             .replace(/<[!\/a-z].*?>/ig, '') // remove unwanted chars
-             .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '').replace(/\s/g, '-');
+                   if (ents.hasOwnProperty(id) && ents[id] === undefined) {
+                     delete ents[id];
+                   }
+                 }
+               }
+             }

            }
            }

-           /**
-            * Finds the next safe (unique) slug to use
-            */
-
-         }, {
-           key: "getNextSafeSlug",
-           value: function getNextSafeSlug(originalSlug, isDryRun) {
-             var slug = originalSlug;
-             var occurenceAccumulator = 0;

 
 

-             if (this.seen.hasOwnProperty(slug)) {
-               occurenceAccumulator = this.seen[originalSlug];
-
-               do {
-                 occurenceAccumulator++;
-                 slug = originalSlug + '-' + occurenceAccumulator;
-               } while (this.seen.hasOwnProperty(slug));
+           for (i = 0; i < stack.length; i++) {
+             stack[i]._updateRebased();
+           }
+         },
+         _updateRebased: function _updateRebased() {
+           var base = this.base();
+           Object.keys(this._parentWays).forEach(function (child) {
+             if (base.parentWays[child]) {
+               base.parentWays[child].forEach(function (id) {
+                 if (!this.entities.hasOwnProperty(id)) {
+                   this._parentWays[child].add(id);
+                 }
+               }, this);
+             }
+           }, this);
+           Object.keys(this._parentRels).forEach(function (child) {
+             if (base.parentRels[child]) {
+               base.parentRels[child].forEach(function (id) {
+                 if (!this.entities.hasOwnProperty(id)) {
+                   this._parentRels[child].add(id);
+                 }
+               }, this);

              }
              }

+           }, this);
+           this.transients = {}; // this._childNodes is not updated, under the assumption that
+           // ways are always downloaded with their child nodes.
+         },
+         // Updates calculated properties (parentWays, parentRels) for the specified change
+         _updateCalculated: function _updateCalculated(oldentity, entity, parentWays, parentRels) {
+           parentWays = parentWays || this._parentWays;
+           parentRels = parentRels || this._parentRels;
+           var type = entity && entity.type || oldentity && oldentity.type;
+           var removed, added, i;

 
 

-             if (!isDryRun) {
-               this.seen[originalSlug] = occurenceAccumulator;
-               this.seen[slug] = 0;
+           if (type === 'way') {
+             // Update parentWays
+             if (oldentity && entity) {
+               removed = utilArrayDifference(oldentity.nodes, entity.nodes);
+               added = utilArrayDifference(entity.nodes, oldentity.nodes);
+             } else if (oldentity) {
+               removed = oldentity.nodes;
+               added = [];
+             } else if (entity) {
+               removed = [];
+               added = entity.nodes;

              }
 
              }
 

-             return slug;
-           }
-           /**
-            * Convert string to unique id
-            * @param {object} options
-            * @param {boolean} options.dryrun Generates the next unique slug without updating the internal accumulator.
-            */
+             for (i = 0; i < removed.length; i++) {
+               // make a copy of prototype property, store as own property, and update..
+               parentWays[removed[i]] = new Set(parentWays[removed[i]]);
+               parentWays[removed[i]]["delete"](oldentity.id);
+             }

 
 

-         }, {
-           key: "slug",
-           value: function slug(value) {
-             var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-             var slug = this.serialize(value);
-             return this.getNextSafeSlug(slug, options.dryrun);
-           }
-         }]);
+             for (i = 0; i < added.length; i++) {
+               // make a copy of prototype property, store as own property, and update..
+               parentWays[added[i]] = new Set(parentWays[added[i]]);
+               parentWays[added[i]].add(entity.id);
+             }
+           } else if (type === 'relation') {
+             // Update parentRels
+             // diff only on the IDs since the same entity can be a member multiple times with different roles
+             var oldentityMemberIDs = oldentity ? oldentity.members.map(function (m) {
+               return m.id;
+             }) : [];
+             var entityMemberIDs = entity ? entity.members.map(function (m) {
+               return m.id;
+             }) : [];

 
 

-         return Slugger;
-       }();
+             if (oldentity && entity) {
+               removed = utilArrayDifference(oldentityMemberIDs, entityMemberIDs);
+               added = utilArrayDifference(entityMemberIDs, oldentityMemberIDs);
+             } else if (oldentity) {
+               removed = oldentityMemberIDs;
+               added = [];
+             } else if (entity) {
+               removed = [];
+               added = entityMemberIDs;
+             }

 
 

-       var defaults$4 = defaults.defaults;
-       var unescape$2 = helpers.unescape;
-       /**
-        * Parsing & Compiling
-        */
+             for (i = 0; i < removed.length; i++) {
+               // make a copy of prototype property, store as own property, and update..
+               parentRels[removed[i]] = new Set(parentRels[removed[i]]);
+               parentRels[removed[i]]["delete"](oldentity.id);
+             }

 
 

-       var Parser_1 = /*#__PURE__*/function () {
-         function Parser(options) {
-           _classCallCheck(this, Parser);
+             for (i = 0; i < added.length; i++) {
+               // make a copy of prototype property, store as own property, and update..
+               parentRels[added[i]] = new Set(parentRels[added[i]]);
+               parentRels[added[i]].add(entity.id);
+             }
+           }
+         },
+         replace: function replace(entity) {
+           if (this.entities[entity.id] === entity) return this;
+           return this.update(function () {
+             this._updateCalculated(this.entities[entity.id], entity);

 
 

-           this.options = options || defaults$4;
-           this.options.renderer = this.options.renderer || new Renderer_1();
-           this.renderer = this.options.renderer;
-           this.renderer.options = this.options;
-           this.textRenderer = new TextRenderer_1();
-           this.slugger = new Slugger_1();
-         }
-         /**
-          * Static Parse Method
-          */
+             this.entities[entity.id] = entity;
+           });
+         },
+         remove: function remove(entity) {
+           return this.update(function () {
+             this._updateCalculated(entity, undefined);

 
 

+             this.entities[entity.id] = undefined;
+           });
+         },
+         revert: function revert(id) {
+           var baseEntity = this.base().entities[id];
+           var headEntity = this.entities[id];
+           if (headEntity === baseEntity) return this;
+           return this.update(function () {
+             this._updateCalculated(headEntity, baseEntity);

 
 

-         _createClass(Parser, [{
-           key: "parse",
+             delete this.entities[id];
+           });
+         },
+         update: function update() {
+           var graph = this.frozen ? coreGraph(this, true) : this;

 
 

-           /**
-            * Parse Loop
-            */
-           value: function parse(tokens) {
-             var top = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
-             var out = '',
-                 i,
-                 j,
-                 k,
-                 l2,
-                 l3,
-                 row,
-                 cell,
-                 header,
-                 body,
-                 token,
-                 ordered,
-                 start,
-                 loose,
-                 itemBody,
-                 item,
-                 checked,
-                 task,
-                 checkbox;
-             var l = tokens.length;
+           for (var i = 0; i < arguments.length; i++) {
+             arguments[i].call(graph, graph);
+           }

 
 

-             for (i = 0; i < l; i++) {
-               token = tokens[i];
+           if (this.frozen) graph.frozen = true;
+           return graph;
+         },
+         // Obliterates any existing entities
+         load: function load(entities) {
+           var base = this.base();
+           this.entities = Object.create(base.entities);

 
 

-               switch (token.type) {
-                 case 'space':
-                   {
-                     continue;
-                   }
+           for (var i in entities) {
+             this.entities[i] = entities[i];

 
 

-                 case 'hr':
-                   {
-                     out += this.renderer.hr();
-                     continue;
-                   }
+             this._updateCalculated(base.entities[i], this.entities[i]);
+           }

 
 

-                 case 'heading':
-                   {
-                     out += this.renderer.heading(this.parseInline(token.tokens), token.depth, unescape$2(this.parseInline(token.tokens, this.textRenderer)), this.slugger);
-                     continue;
-                   }
+           return this;
+         }
+       };

 
 

-                 case 'code':
-                   {
-                     out += this.renderer.code(token.text, token.lang, token.escaped);
-                     continue;
-                   }
+       function osmTurn(turn) {
+         if (!(this instanceof osmTurn)) {
+           return new osmTurn(turn);
+         }

 
 

-                 case 'table':
-                   {
-                     header = ''; // header
+         Object.assign(this, turn);
+       }
+       function osmIntersection(graph, startVertexId, maxDistance) {
+         maxDistance = maxDistance || 30; // in meters

 
 

-                     cell = '';
-                     l2 = token.header.length;
+         var vgraph = coreGraph(); // virtual graph

 
 

-                     for (j = 0; j < l2; j++) {
-                       cell += this.renderer.tablecell(this.parseInline(token.tokens.header[j]), {
-                         header: true,
-                         align: token.align[j]
-                       });
-                     }
+         var i, j, k;

 
 

-                     header += this.renderer.tablerow(cell);
-                     body = '';
-                     l2 = token.cells.length;
+         function memberOfRestriction(entity) {
+           return graph.parentRelations(entity).some(function (r) {
+             return r.isRestriction();
+           });
+         }

 
 

-                     for (j = 0; j < l2; j++) {
-                       row = token.tokens.cells[j];
-                       cell = '';
-                       l3 = row.length;
+         function isRoad(way) {
+           if (way.isArea() || way.isDegenerate()) return false;
+           var roads = {
+             'motorway': true,
+             'motorway_link': true,
+             'trunk': true,
+             'trunk_link': true,
+             'primary': true,
+             'primary_link': true,
+             'secondary': true,
+             'secondary_link': true,
+             'tertiary': true,
+             'tertiary_link': true,
+             'residential': true,
+             'unclassified': true,
+             'living_street': true,
+             'service': true,
+             'road': true,
+             'track': true
+           };
+           return roads[way.tags.highway];
+         }

 
 

-                       for (k = 0; k < l3; k++) {
-                         cell += this.renderer.tablecell(this.parseInline(row[k]), {
-                           header: false,
-                           align: token.align[k]
-                         });
-                       }
+         var startNode = graph.entity(startVertexId);
+         var checkVertices = [startNode];
+         var checkWays;
+         var vertices = [];
+         var vertexIds = [];
+         var vertex;
+         var ways = [];
+         var wayIds = [];
+         var way;
+         var nodes = [];
+         var node;
+         var parents = [];
+         var parent; // `actions` will store whatever actions must be performed to satisfy
+         // preconditions for adding a turn restriction to this intersection.
+         //  - Remove any existing degenerate turn restrictions (missing from/to, etc)
+         //  - Reverse oneways so that they are drawn in the forward direction
+         //  - Split ways on key vertices

 
 

-                       body += this.renderer.tablerow(cell);
-                     }
+         var actions = []; // STEP 1:  walk the graph outwards from starting vertex to search
+         //  for more key vertices and ways to include in the intersection..

 
 

-                     out += this.renderer.table(header, body);
-                     continue;
-                   }
+         while (checkVertices.length) {
+           vertex = checkVertices.pop(); // check this vertex for parent ways that are roads

 
 

-                 case 'blockquote':
-                   {
-                     body = this.parse(token.tokens);
-                     out += this.renderer.blockquote(body);
-                     continue;
-                   }
+           checkWays = graph.parentWays(vertex);
+           var hasWays = false;

 
 

-                 case 'list':
-                   {
-                     ordered = token.ordered;
-                     start = token.start;
-                     loose = token.loose;
-                     l2 = token.items.length;
-                     body = '';
+           for (i = 0; i < checkWays.length; i++) {
+             way = checkWays[i];
+             if (!isRoad(way) && !memberOfRestriction(way)) continue;
+             ways.push(way); // it's a road, or it's already in a turn restriction

 
 

-                     for (j = 0; j < l2; j++) {
-                       item = token.items[j];
-                       checked = item.checked;
-                       task = item.task;
-                       itemBody = '';
+             hasWays = true; // check the way's children for more key vertices

 
 

-                       if (item.task) {
-                         checkbox = this.renderer.checkbox(checked);
+             nodes = utilArrayUniq(graph.childNodes(way));

 
 

-                         if (loose) {
-                           if (item.tokens.length > 0 && item.tokens[0].type === 'text') {
-                             item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;
+             for (j = 0; j < nodes.length; j++) {
+               node = nodes[j];
+               if (node === vertex) continue; // same thing

 
 

-                             if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {
-                               item.tokens[0].tokens[0].text = checkbox + ' ' + item.tokens[0].tokens[0].text;
-                             }
-                           } else {
-                             item.tokens.unshift({
-                               type: 'text',
-                               text: checkbox
-                             });
-                           }
-                         } else {
-                           itemBody += checkbox;
-                         }
-                       }
+               if (vertices.indexOf(node) !== -1) continue; // seen it already

 
 

-                       itemBody += this.parse(item.tokens, loose);
-                       body += this.renderer.listitem(itemBody, task, checked);
-                     }
+               if (geoSphericalDistance(node.loc, startNode.loc) > maxDistance) continue; // too far from start
+               // a key vertex will have parents that are also roads

 
 

-                     out += this.renderer.list(body, ordered, start);
-                     continue;
-                   }
+               var hasParents = false;
+               parents = graph.parentWays(node);

 
 

-                 case 'html':
-                   {
-                     // TODO parse inline content if parameter markdown=1
-                     out += this.renderer.html(token.text);
-                     continue;
-                   }
+               for (k = 0; k < parents.length; k++) {
+                 parent = parents[k];
+                 if (parent === way) continue; // same thing

 
 

-                 case 'paragraph':
-                   {
-                     out += this.renderer.paragraph(this.parseInline(token.tokens));
-                     continue;
-                   }
+                 if (ways.indexOf(parent) !== -1) continue; // seen it already

 
 

-                 case 'text':
-                   {
-                     body = token.tokens ? this.parseInline(token.tokens) : token.text;
+                 if (!isRoad(parent)) continue; // not a road

 
 

-                     while (i + 1 < l && tokens[i + 1].type === 'text') {
-                       token = tokens[++i];
-                       body += '\n' + (token.tokens ? this.parseInline(token.tokens) : token.text);
-                     }
+                 hasParents = true;
+                 break;
+               }

 
 

-                     out += top ? this.renderer.paragraph(body) : body;
-                     continue;
-                   }
+               if (hasParents) {
+                 checkVertices.push(node);
+               }
+             }
+           }

 
 

-                 default:
-                   {
-                     var errMsg = 'Token with "' + token.type + '" type was not found.';
+           if (hasWays) {
+             vertices.push(vertex);
+           }
+         }

 
 

-                     if (this.options.silent) {
-                       console.error(errMsg);
-                       return;
-                     } else {
-                       throw new Error(errMsg);
-                     }
-                   }
+         vertices = utilArrayUniq(vertices);
+         ways = utilArrayUniq(ways); // STEP 2:  Build a virtual graph containing only the entities in the intersection..
+         // Everything done after this step should act on the virtual graph
+         // Any actions that must be performed later to the main graph go in `actions` array
+
+         ways.forEach(function (way) {
+           graph.childNodes(way).forEach(function (node) {
+             vgraph = vgraph.replace(node);
+           });
+           vgraph = vgraph.replace(way);
+           graph.parentRelations(way).forEach(function (relation) {
+             if (relation.isRestriction()) {
+               if (relation.isValidRestriction(graph)) {
+                 vgraph = vgraph.replace(relation);
+               } else if (relation.isComplete(graph)) {
+                 actions.push(actionDeleteRelation(relation.id));

                }
              }
                }
              }

+           });
+         }); // STEP 3:  Force all oneways to be drawn in the forward direction

 
 

-             return out;
+         ways.forEach(function (w) {
+           var way = vgraph.entity(w.id);
+
+           if (way.tags.oneway === '-1') {
+             var action = actionReverse(way.id, {
+               reverseOneway: true
+             });
+             actions.push(action);
+             vgraph = action(vgraph);

            }
            }

-           /**
-            * Parse Inline Tokens
-            */
+         }); // STEP 4:  Split ways on key vertices

 
 

-         }, {
-           key: "parseInline",
-           value: function parseInline(tokens, renderer) {
-             renderer = renderer || this.renderer;
-             var out = '',
-                 i,
-                 token;
-             var l = tokens.length;
+         var origCount = osmEntity.id.next.way;
+         vertices.forEach(function (v) {
+           // This is an odd way to do it, but we need to find all the ways that
+           // will be split here, then split them one at a time to ensure that these
+           // actions can be replayed on the main graph exactly in the same order.
+           // (It is unintuitive, but the order of ways returned from graph.parentWays()
+           // is arbitrary, depending on how the main graph and vgraph were built)
+           var splitAll = actionSplit([v.id]).keepHistoryOn('first');

 
 

-             for (i = 0; i < l; i++) {
-               token = tokens[i];
+           if (!splitAll.disabled(vgraph)) {
+             splitAll.ways(vgraph).forEach(function (way) {
+               var splitOne = actionSplit([v.id]).limitWays([way.id]).keepHistoryOn('first');
+               actions.push(splitOne);
+               vgraph = splitOne(vgraph);
+             });
+           }
+         }); // In here is where we should also split the intersection at nearby junction.
+         //   for https://github.com/mapbox/iD-internal/issues/31
+         // nearbyVertices.forEach(function(v) {
+         // });
+         // Reasons why we reset the way id count here:
+         //  1. Continuity with way ids created by the splits so that we can replay
+         //     these actions later if the user decides to create a turn restriction
+         //  2. Avoids churning way ids just by hovering over a vertex
+         //     and displaying the turn restriction editor

 
 

-               switch (token.type) {
-                 case 'escape':
-                   {
-                     out += renderer.text(token.text);
-                     break;
-                   }
+         osmEntity.id.next.way = origCount; // STEP 5:  Update arrays to point to vgraph entities

 
 

-                 case 'html':
-                   {
-                     out += renderer.html(token.text);
-                     break;
-                   }
+         vertexIds = vertices.map(function (v) {
+           return v.id;
+         });
+         vertices = [];
+         ways = [];
+         vertexIds.forEach(function (id) {
+           var vertex = vgraph.entity(id);
+           var parents = vgraph.parentWays(vertex);
+           vertices.push(vertex);
+           ways = ways.concat(parents);
+         });
+         vertices = utilArrayUniq(vertices);
+         ways = utilArrayUniq(ways);
+         vertexIds = vertices.map(function (v) {
+           return v.id;
+         });
+         wayIds = ways.map(function (w) {
+           return w.id;
+         }); // STEP 6:  Update the ways with some metadata that will be useful for
+         // walking the intersection graph later and rendering turn arrows.

 
 

-                 case 'link':
-                   {
-                     out += renderer.link(token.href, token.title, this.parseInline(token.tokens, renderer));
-                     break;
-                   }
+         function withMetadata(way, vertexIds) {
+           var __oneWay = way.isOneWay(); // which affixes are key vertices?

 
 

-                 case 'image':
-                   {
-                     out += renderer.image(token.href, token.title, token.text);
-                     break;
-                   }

 
 

-                 case 'strong':
-                   {
-                     out += renderer.strong(this.parseInline(token.tokens, renderer));
-                     break;
-                   }
+           var __first = vertexIds.indexOf(way.first()) !== -1;

 
 

-                 case 'em':
-                   {
-                     out += renderer.em(this.parseInline(token.tokens, renderer));
-                     break;
-                   }
+           var __last = vertexIds.indexOf(way.last()) !== -1; // what roles is this way eligible for?

 
 

-                 case 'codespan':
-                   {
-                     out += renderer.codespan(token.text);
-                     break;
-                   }

 
 

-                 case 'br':
-                   {
-                     out += renderer.br();
-                     break;
-                   }
+           var __via = __first && __last;

 
 

-                 case 'del':
-                   {
-                     out += renderer.del(this.parseInline(token.tokens, renderer));
-                     break;
-                   }
+           var __from = __first && !__oneWay || __last;

 
 

-                 case 'text':
-                   {
-                     out += renderer.text(token.text);
-                     break;
-                   }
+           var __to = __first || __last && !__oneWay;

 
 

-                 default:
-                   {
-                     var errMsg = 'Token with "' + token.type + '" type was not found.';
+           return way.update({
+             __first: __first,
+             __last: __last,
+             __from: __from,
+             __via: __via,
+             __to: __to,
+             __oneWay: __oneWay
+           });
+         }

 
 

-                     if (this.options.silent) {
-                       console.error(errMsg);
-                       return;
-                     } else {
-                       throw new Error(errMsg);
-                     }
-                   }
-               }
-             }
+         ways = [];
+         wayIds.forEach(function (id) {
+           var way = withMetadata(vgraph.entity(id), vertexIds);
+           vgraph = vgraph.replace(way);
+           ways.push(way);
+         }); // STEP 7:  Simplify - This is an iterative process where we:
+         //  1. Find trivial vertices with only 2 parents
+         //  2. trim off the leaf way from those vertices and remove from vgraph

 
 

-             return out;
-           }
-         }], [{
-           key: "parse",
-           value: function parse(tokens, options) {
-             var parser = new Parser(options);
-             return parser.parse(tokens);
-           }
-           /**
-            * Static Parse Inline Method
-            */
+         var keepGoing;
+         var removeWayIds = [];
+         var removeVertexIds = [];

 
 

-         }, {
-           key: "parseInline",
-           value: function parseInline(tokens, options) {
-             var parser = new Parser(options);
-             return parser.parseInline(tokens);
-           }
-         }]);
+         do {
+           keepGoing = false;
+           checkVertices = vertexIds.slice();

 
 

-         return Parser;
-       }();
+           for (i = 0; i < checkVertices.length; i++) {
+             var vertexId = checkVertices[i];
+             vertex = vgraph.hasEntity(vertexId);

 
 

-       var merge$3 = helpers.merge,
-           checkSanitizeDeprecation$1 = helpers.checkSanitizeDeprecation,
-           escape$3 = helpers.escape;
-       var getDefaults = defaults.getDefaults,
-           changeDefaults = defaults.changeDefaults,
-           defaults$5 = defaults.defaults;
-       /**
-        * Marked
-        */
+             if (!vertex) {
+               if (vertexIds.indexOf(vertexId) !== -1) {
+                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               }

 
 

-       function marked(src, opt, callback) {
-         // throw error in case of non string input
-         if (typeof src === 'undefined' || src === null) {
-           throw new Error('marked(): input parameter is undefined or null');
-         }
+               removeVertexIds.push(vertexId);
+               continue;
+             }

 
 

-         if (typeof src !== 'string') {
-           throw new Error('marked(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected');
-         }
+             parents = vgraph.parentWays(vertex);

 
 

-         if (typeof opt === 'function') {
-           callback = opt;
-           opt = null;
-         }
+             if (parents.length < 3) {
+               if (vertexIds.indexOf(vertexId) !== -1) {
+                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               }
+             }

 
 

-         opt = merge$3({}, marked.defaults, opt || {});
-         checkSanitizeDeprecation$1(opt);
+             if (parents.length === 2) {
+               // vertex with 2 parents is trivial
+               var a = parents[0];
+               var b = parents[1];
+               var aIsLeaf = a && !a.__via;
+               var bIsLeaf = b && !b.__via;
+               var leaf, survivor;

 
 

-         if (callback) {
-           var highlight = opt.highlight;
-           var tokens;
+               if (aIsLeaf && !bIsLeaf) {
+                 leaf = a;
+                 survivor = b;
+               } else if (!aIsLeaf && bIsLeaf) {
+                 leaf = b;
+                 survivor = a;
+               }

 
 

-           try {
-             tokens = Lexer_1.lex(src, opt);
-           } catch (e) {
-             return callback(e);
-           }
+               if (leaf && survivor) {
+                 survivor = withMetadata(survivor, vertexIds); // update survivor way

 
 

-           var done = function done(err) {
-             var out;
+                 vgraph = vgraph.replace(survivor).remove(leaf); // update graph

 
 

-             if (!err) {
-               try {
-                 out = Parser_1.parse(tokens, opt);
-               } catch (e) {
-                 err = e;
+                 removeWayIds.push(leaf.id);
+                 keepGoing = true;

                }
              }
 
                }
              }
 

-             opt.highlight = highlight;
-             return err ? callback(err) : callback(null, out);
-           };
+             parents = vgraph.parentWays(vertex);

 
 

-           if (!highlight || highlight.length < 3) {
-             return done();
-           }
+             if (parents.length < 2) {
+               // vertex is no longer a key vertex
+               if (vertexIds.indexOf(vertexId) !== -1) {
+                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               }

 
 

-           delete opt.highlight;
-           if (!tokens.length) return done();
-           var pending = 0;
-           marked.walkTokens(tokens, function (token) {
-             if (token.type === 'code') {
-               pending++;
-               setTimeout(function () {
-                 highlight(token.text, token.lang, function (err, code) {
-                   if (err) {
-                     return done(err);
-                   }
+               removeVertexIds.push(vertexId);
+               keepGoing = true;
+             }

 
 

-                   if (code != null && code !== token.text) {
-                     token.text = code;
-                     token.escaped = true;
-                   }
+             if (parents.length < 1) {
+               // vertex is no longer attached to anything
+               vgraph = vgraph.remove(vertex);
+             }
+           }
+         } while (keepGoing);

 
 

-                   pending--;
+         vertices = vertices.filter(function (vertex) {
+           return removeVertexIds.indexOf(vertex.id) === -1;
+         }).map(function (vertex) {
+           return vgraph.entity(vertex.id);
+         });
+         ways = ways.filter(function (way) {
+           return removeWayIds.indexOf(way.id) === -1;
+         }).map(function (way) {
+           return vgraph.entity(way.id);
+         }); // OK!  Here is our intersection..

 
 

-                   if (pending === 0) {
-                     done();
-                   }
-                 });
-               }, 0);
-             }
+         var intersection = {
+           graph: vgraph,
+           actions: actions,
+           vertices: vertices,
+           ways: ways
+         }; // Get all the valid turns through this intersection given a starting way id.
+         // This operates on the virtual graph for everything.
+         //
+         // Basically, walk through all possible paths from starting way,
+         //   honoring the existing turn restrictions as we go (watch out for loops!)
+         //
+         // For each path found, generate and return a `osmTurn` datastructure.
+         //
+
+         intersection.turns = function (fromWayId, maxViaWay) {
+           if (!fromWayId) return [];
+           if (!maxViaWay) maxViaWay = 0;
+           var vgraph = intersection.graph;
+           var keyVertexIds = intersection.vertices.map(function (v) {
+             return v.id;

            });
            });

+           var start = vgraph.entity(fromWayId);
+           if (!start || !(start.__from || start.__via)) return []; // maxViaWay=0   from-*-to              (0 vias)
+           // maxViaWay=1   from-*-via-*-to        (1 via max)
+           // maxViaWay=2   from-*-via-*-via-*-to  (2 vias max)

 
 

-           if (pending === 0) {
-             done();
-           }
+           var maxPathLength = maxViaWay * 2 + 3;
+           var turns = [];
+           step(start);
+           return turns; // traverse the intersection graph and find all the valid paths

 
 

-           return;
-         }
+           function step(entity, currPath, currRestrictions, matchedRestriction) {
+             currPath = (currPath || []).slice(); // shallow copy

 
 

-         try {
-           var _tokens = Lexer_1.lex(src, opt);
+             if (currPath.length >= maxPathLength) return;
+             currPath.push(entity.id);
+             currRestrictions = (currRestrictions || []).slice(); // shallow copy

 
 

-           if (opt.walkTokens) {
-             marked.walkTokens(_tokens, opt.walkTokens);
-           }
+             var i, j;

 
 

-           return Parser_1.parse(_tokens, opt);
-         } catch (e) {
-           e.message += '\nPlease report this to https://github.com/markedjs/marked.';
+             if (entity.type === 'node') {
+               var parents = vgraph.parentWays(entity);
+               var nextWays = []; // which ways can we step into?

 
 

-           if (opt.silent) {
-             return '<p>An error occurred:</p><pre>' + escape$3(e.message + '', true) + '</pre>';
-           }
+               for (i = 0; i < parents.length; i++) {
+                 var way = parents[i]; // if next way is a oneway incoming to this vertex, skip

 
 

-           throw e;
-         }
-       }
-       /**
-        * Options
-        */
+                 if (way.__oneWay && way.nodes[0] !== entity.id) continue; // if we have seen it before (allowing for an initial u-turn), skip

 
 

+                 if (currPath.indexOf(way.id) !== -1 && currPath.length >= 3) continue; // Check all "current" restrictions (where we've already walked the `FROM`)

 
 

-       marked.options = marked.setOptions = function (opt) {
-         merge$3(marked.defaults, opt);
-         changeDefaults(marked.defaults);
-         return marked;
-       };
+                 var restrict = null;

 
 

-       marked.getDefaults = getDefaults;
-       marked.defaults = defaults$5;
-       /**
-        * Use Extension
-        */
+                 for (j = 0; j < currRestrictions.length; j++) {
+                   var restriction = currRestrictions[j];
+                   var f = restriction.memberByRole('from');
+                   var v = restriction.membersByRole('via');
+                   var t = restriction.memberByRole('to');
+                   var isOnly = /^only_/.test(restriction.tags.restriction); // Does the current path match this turn restriction?

 
 

-       marked.use = function (extension) {
-         var opts = merge$3({}, extension);
+                   var matchesFrom = f.id === fromWayId;
+                   var matchesViaTo = false;
+                   var isAlongOnlyPath = false;

 
 

-         if (extension.renderer) {
-           (function () {
-             var renderer = marked.defaults.renderer || new Renderer_1();
+                   if (t.id === way.id) {
+                     // match TO
+                     if (v.length === 1 && v[0].type === 'node') {
+                       // match VIA node
+                       matchesViaTo = v[0].id === entity.id && (matchesFrom && currPath.length === 2 || !matchesFrom && currPath.length > 2);
+                     } else {
+                       // match all VIA ways
+                       var pathVias = [];

 
 

-             var _loop = function _loop(prop) {
-               var prevRenderer = renderer[prop];
+                       for (k = 2; k < currPath.length; k += 2) {
+                         // k = 2 skips FROM
+                         pathVias.push(currPath[k]); // (path goes way-node-way...)
+                       }

 
 

-               renderer[prop] = function () {
-                 for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
-                   args[_key] = arguments[_key];
-                 }
+                       var restrictionVias = [];
+
+                       for (k = 0; k < v.length; k++) {
+                         if (v[k].type === 'way') {
+                           restrictionVias.push(v[k].id);
+                         }
+                       }
+
+                       var diff = utilArrayDifference(pathVias, restrictionVias);
+                       matchesViaTo = !diff.length;
+                     }
+                   } else if (isOnly) {
+                     for (k = 0; k < v.length; k++) {
+                       // way doesn't match TO, but is one of the via ways along the path of an "only"
+                       if (v[k].type === 'way' && v[k].id === way.id) {
+                         isAlongOnlyPath = true;
+                         break;
+                       }
+                     }
+                   }
+
+                   if (matchesViaTo) {
+                     if (isOnly) {
+                       restrict = {
+                         id: restriction.id,
+                         direct: matchesFrom,
+                         from: f.id,
+                         only: true,
+                         end: true
+                       };
+                     } else {
+                       restrict = {
+                         id: restriction.id,
+                         direct: matchesFrom,
+                         from: f.id,
+                         no: true,
+                         end: true
+                       };
+                     }
+                   } else {
+                     // indirect - caused by a different nearby restriction
+                     if (isAlongOnlyPath) {
+                       restrict = {
+                         id: restriction.id,
+                         direct: false,
+                         from: f.id,
+                         only: true,
+                         end: false
+                       };
+                     } else if (isOnly) {
+                       restrict = {
+                         id: restriction.id,
+                         direct: false,
+                         from: f.id,
+                         no: true,
+                         end: true
+                       };
+                     }
+                   } // stop looking if we find a "direct" restriction (matching FROM, VIA, TO)

 
 

-                 var ret = extension.renderer[prop].apply(renderer, args);

 
 

-                 if (ret === false) {
-                   ret = prevRenderer.apply(renderer, args);
+                   if (restrict && restrict.direct) break;

                  }
 
                  }
 

-                 return ret;
-               };
-             };
-
-             for (var prop in extension.renderer) {
-               _loop(prop);
-             }
-
-             opts.renderer = renderer;
-           })();
-         }
-
-         if (extension.tokenizer) {
-           (function () {
-             var tokenizer = marked.defaults.tokenizer || new Tokenizer_1();
+                 nextWays.push({
+                   way: way,
+                   restrict: restrict
+                 });
+               }

 
 

-             var _loop2 = function _loop2(prop) {
-               var prevTokenizer = tokenizer[prop];
+               nextWays.forEach(function (nextWay) {
+                 step(nextWay.way, currPath, currRestrictions, nextWay.restrict);
+               });
+             } else {
+               // entity.type === 'way'
+               if (currPath.length >= 3) {
+                 // this is a "complete" path..
+                 var turnPath = currPath.slice(); // shallow copy
+                 // an indirect restriction - only include the partial path (starting at FROM)

 
 

-               tokenizer[prop] = function () {
-                 for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
-                   args[_key2] = arguments[_key2];
+                 if (matchedRestriction && matchedRestriction.direct === false) {
+                   for (i = 0; i < turnPath.length; i++) {
+                     if (turnPath[i] === matchedRestriction.from) {
+                       turnPath = turnPath.slice(i);
+                       break;
+                     }
+                   }

                  }
 
                  }
 

-                 var ret = extension.tokenizer[prop].apply(tokenizer, args);
+                 var turn = pathToTurn(turnPath);

 
 

-                 if (ret === false) {
-                   ret = prevTokenizer.apply(tokenizer, args);
-                 }
+                 if (turn) {
+                   if (matchedRestriction) {
+                     turn.restrictionID = matchedRestriction.id;
+                     turn.no = matchedRestriction.no;
+                     turn.only = matchedRestriction.only;
+                     turn.direct = matchedRestriction.direct;
+                   }

 
 

-                 return ret;
-               };
-             };
+                   turns.push(osmTurn(turn));
+                 }

 
 

-             for (var prop in extension.tokenizer) {
-               _loop2(prop);
-             }
+                 if (currPath[0] === currPath[2]) return; // if we made a u-turn - stop here
+               }

 
 

-             opts.tokenizer = tokenizer;
-           })();
-         }
+               if (matchedRestriction && matchedRestriction.end) return; // don't advance any further
+               // which nodes can we step into?

 
 

-         if (extension.walkTokens) {
-           var walkTokens = marked.defaults.walkTokens;
+               var n1 = vgraph.entity(entity.first());
+               var n2 = vgraph.entity(entity.last());
+               var dist = geoSphericalDistance(n1.loc, n2.loc);
+               var nextNodes = [];

 
 

-           opts.walkTokens = function (token) {
-             extension.walkTokens(token);
+               if (currPath.length > 1) {
+                 if (dist > maxDistance) return; // the next node is too far

 
 

-             if (walkTokens) {
-               walkTokens(token);
-             }
-           };
-         }
+                 if (!entity.__via) return; // this way is a leaf / can't be a via
+               }

 
 

-         marked.setOptions(opts);
-       };
-       /**
-        * Run callback for every token
-        */
+               if (!entity.__oneWay && // bidirectional..
+               keyVertexIds.indexOf(n1.id) !== -1 && // key vertex..
+               currPath.indexOf(n1.id) === -1) {
+                 // haven't seen it yet..
+                 nextNodes.push(n1); // can advance to first node
+               }

 
 

+               if (keyVertexIds.indexOf(n2.id) !== -1 && // key vertex..
+               currPath.indexOf(n2.id) === -1) {
+                 // haven't seen it yet..
+                 nextNodes.push(n2); // can advance to last node
+               }

 
 

-       marked.walkTokens = function (tokens, callback) {
-         var _iterator = _createForOfIteratorHelper(tokens),
-             _step;
+               nextNodes.forEach(function (nextNode) {
+                 // gather restrictions FROM this way
+                 var fromRestrictions = vgraph.parentRelations(entity).filter(function (r) {
+                   if (!r.isRestriction()) return false;
+                   var f = r.memberByRole('from');
+                   if (!f || f.id !== entity.id) return false;
+                   var isOnly = /^only_/.test(r.tags.restriction);
+                   if (!isOnly) return true; // `only_` restrictions only matter along the direction of the VIA - #4849

 
 

-         try {
-           for (_iterator.s(); !(_step = _iterator.n()).done;) {
-             var token = _step.value;
-             callback(token);
+                   var isOnlyVia = false;
+                   var v = r.membersByRole('via');

 
 

-             switch (token.type) {
-               case 'table':
-                 {
-                   var _iterator2 = _createForOfIteratorHelper(token.tokens.header),
-                       _step2;
+                   if (v.length === 1 && v[0].type === 'node') {
+                     // via node
+                     isOnlyVia = v[0].id === nextNode.id;
+                   } else {
+                     // via way(s)
+                     for (var i = 0; i < v.length; i++) {
+                       if (v[i].type !== 'way') continue;
+                       var viaWay = vgraph.entity(v[i].id);

 
 

-                   try {
-                     for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
-                       var cell = _step2.value;
-                       marked.walkTokens(cell, callback);
+                       if (viaWay.first() === nextNode.id || viaWay.last() === nextNode.id) {
+                         isOnlyVia = true;
+                         break;
+                       }

                      }
                      }

-                   } catch (err) {
-                     _iterator2.e(err);
-                   } finally {
-                     _iterator2.f();

                    }
 
                    }
 

-                   var _iterator3 = _createForOfIteratorHelper(token.tokens.cells),
-                       _step3;
+                   return isOnlyVia;
+                 });
+                 step(nextNode, currPath, currRestrictions.concat(fromRestrictions), false);
+               });
+             }
+           } // assumes path is alternating way-node-way of odd length

 
 

-                   try {
-                     for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
-                       var row = _step3.value;

 
 

-                       var _iterator4 = _createForOfIteratorHelper(row),
-                           _step4;
+           function pathToTurn(path) {
+             if (path.length < 3) return;
+             var fromWayId, fromNodeId, fromVertexId;
+             var toWayId, toNodeId, toVertexId;
+             var viaWayIds, viaNodeId, isUturn;
+             fromWayId = path[0];
+             toWayId = path[path.length - 1];

 
 

-                       try {
-                         for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
-                           var _cell = _step4.value;
-                           marked.walkTokens(_cell, callback);
-                         }
-                       } catch (err) {
-                         _iterator4.e(err);
-                       } finally {
-                         _iterator4.f();
-                       }
-                     }
-                   } catch (err) {
-                     _iterator3.e(err);
-                   } finally {
-                     _iterator3.f();
-                   }
+             if (path.length === 3 && fromWayId === toWayId) {
+               // u turn
+               var way = vgraph.entity(fromWayId);
+               if (way.__oneWay) return null;
+               isUturn = true;
+               viaNodeId = fromVertexId = toVertexId = path[1];
+               fromNodeId = toNodeId = adjacentNode(fromWayId, viaNodeId);
+             } else {
+               isUturn = false;
+               fromVertexId = path[1];
+               fromNodeId = adjacentNode(fromWayId, fromVertexId);
+               toVertexId = path[path.length - 2];
+               toNodeId = adjacentNode(toWayId, toVertexId);

 
 

-                   break;
-                 }
+               if (path.length === 3) {
+                 viaNodeId = path[1];
+               } else {
+                 viaWayIds = path.filter(function (entityId) {
+                   return entityId[0] === 'w';
+                 });
+                 viaWayIds = viaWayIds.slice(1, viaWayIds.length - 1); // remove first, last
+               }
+             }

 
 

-               case 'list':
-                 {
-                   marked.walkTokens(token.items, callback);
-                   break;
-                 }
+             return {
+               key: path.join('_'),
+               path: path,
+               from: {
+                 node: fromNodeId,
+                 way: fromWayId,
+                 vertex: fromVertexId
+               },
+               via: {
+                 node: viaNodeId,
+                 ways: viaWayIds
+               },
+               to: {
+                 node: toNodeId,
+                 way: toWayId,
+                 vertex: toVertexId
+               },
+               u: isUturn
+             };

 
 

-               default:
-                 {
-                   if (token.tokens) {
-                     marked.walkTokens(token.tokens, callback);
-                   }
-                 }
+             function adjacentNode(wayId, affixId) {
+               var nodes = vgraph.entity(wayId).nodes;
+               return affixId === nodes[0] ? nodes[1] : nodes[nodes.length - 2];

              }
            }
              }
            }

-         } catch (err) {
-           _iterator.e(err);
-         } finally {
-           _iterator.f();
+         };
+
+         return intersection;
+       }
+       function osmInferRestriction(graph, turn, projection) {
+         var fromWay = graph.entity(turn.from.way);
+         var fromNode = graph.entity(turn.from.node);
+         var fromVertex = graph.entity(turn.from.vertex);
+         var toWay = graph.entity(turn.to.way);
+         var toNode = graph.entity(turn.to.node);
+         var toVertex = graph.entity(turn.to.vertex);
+         var fromOneWay = fromWay.tags.oneway === 'yes';
+         var toOneWay = toWay.tags.oneway === 'yes';
+         var angle = (geoAngle(fromVertex, fromNode, projection) - geoAngle(toVertex, toNode, projection)) * 180 / Math.PI;
+
+         while (angle < 0) {
+           angle += 360;

          }
          }

-       };
-       /**
-        * Parse Inline
-        */

 
 

+         if (fromNode === toNode) {
+           return 'no_u_turn';
+         }

 
 

-       marked.parseInline = function (src, opt) {
-         // throw error in case of non string input
-         if (typeof src === 'undefined' || src === null) {
-           throw new Error('marked.parseInline(): input parameter is undefined or null');
+         if ((angle < 23 || angle > 336) && fromOneWay && toOneWay) {
+           return 'no_u_turn'; // wider tolerance for u-turn if both ways are oneway

          }
 
          }
 

-         if (typeof src !== 'string') {
-           throw new Error('marked.parseInline(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected');
+         if ((angle < 40 || angle > 319) && fromOneWay && toOneWay && turn.from.vertex !== turn.to.vertex) {
+           return 'no_u_turn'; // even wider tolerance for u-turn if there is a via way (from !== to)

          }
 
          }
 

-         opt = merge$3({}, marked.defaults, opt || {});
-         checkSanitizeDeprecation$1(opt);
+         if (angle < 158) {
+           return 'no_right_turn';
+         }

 
 

-         try {
-           var tokens = Lexer_1.lexInline(src, opt);
+         if (angle > 202) {
+           return 'no_left_turn';
+         }

 
 

-           if (opt.walkTokens) {
-             marked.walkTokens(tokens, opt.walkTokens);
+         return 'no_straight_on';
+       }
+
+       function actionMergePolygon(ids, newRelationId) {
+         function groupEntities(graph) {
+           var entities = ids.map(function (id) {
+             return graph.entity(id);
+           });
+           var geometryGroups = utilArrayGroupBy(entities, function (entity) {
+             if (entity.type === 'way' && entity.isClosed()) {
+               return 'closedWay';
+             } else if (entity.type === 'relation' && entity.isMultipolygon()) {
+               return 'multipolygon';
+             } else {
+               return 'other';
+             }
+           });
+           return Object.assign({
+             closedWay: [],
+             multipolygon: [],
+             other: []
+           }, geometryGroups);
+         }
+
+         var action = function action(graph) {
+           var entities = groupEntities(graph); // An array representing all the polygons that are part of the multipolygon.
+           //
+           // Each element is itself an array of objects with an id property, and has a
+           // locs property which is an array of the locations forming the polygon.
+
+           var polygons = entities.multipolygon.reduce(function (polygons, m) {
+             return polygons.concat(osmJoinWays(m.members, graph));
+           }, []).concat(entities.closedWay.map(function (d) {
+             var member = [{
+               id: d.id
+             }];
+             member.nodes = graph.childNodes(d);
+             return member;
+           })); // contained is an array of arrays of boolean values,
+           // where contained[j][k] is true iff the jth way is
+           // contained by the kth way.
+
+           var contained = polygons.map(function (w, i) {
+             return polygons.map(function (d, n) {
+               if (i === n) return null;
+               return geoPolygonContainsPolygon(d.nodes.map(function (n) {
+                 return n.loc;
+               }), w.nodes.map(function (n) {
+                 return n.loc;
+               }));
+             });
+           }); // Sort all polygons as either outer or inner ways
+
+           var members = [];
+           var outer = true;
+
+           while (polygons.length) {
+             extractUncontained(polygons);
+             polygons = polygons.filter(isContained);
+             contained = contained.filter(isContained).map(filterContained);

            }
 
            }
 

-           return Parser_1.parseInline(tokens, opt);
-         } catch (e) {
-           e.message += '\nPlease report this to https://github.com/markedjs/marked.';
+           function isContained(d, i) {
+             return contained[i].some(function (val) {
+               return val;
+             });
+           }

 
 

-           if (opt.silent) {
-             return '<p>An error occurred:</p><pre>' + escape$3(e.message + '', true) + '</pre>';
+           function filterContained(d) {
+             return d.filter(isContained);

            }
 
            }
 

-           throw e;
-         }
-       };
-       /**
-        * Expose
-        */
+           function extractUncontained(polygons) {
+             polygons.forEach(function (d, i) {
+               if (!isContained(d, i)) {
+                 d.forEach(function (member) {
+                   members.push({
+                     type: 'way',
+                     id: member.id,
+                     role: outer ? 'outer' : 'inner'
+                   });
+                 });
+               }
+             });
+             outer = !outer;
+           } // Move all tags to one relation

 
 
 
 

-       marked.Parser = Parser_1;
-       marked.parser = Parser_1.parse;
-       marked.Renderer = Renderer_1;
-       marked.TextRenderer = TextRenderer_1;
-       marked.Lexer = Lexer_1;
-       marked.lexer = Lexer_1.lex;
-       marked.Tokenizer = Tokenizer_1;
-       marked.Slugger = Slugger_1;
-       marked.parse = marked;
-       var marked_1 = marked;
+           var relation = entities.multipolygon[0] || osmRelation({
+             id: newRelationId,
+             tags: {
+               type: 'multipolygon'
+             }
+           });
+           entities.multipolygon.slice(1).forEach(function (m) {
+             relation = relation.mergeTags(m.tags);
+             graph = graph.remove(m);
+           });
+           entities.closedWay.forEach(function (way) {
+             function isThisOuter(m) {
+               return m.id === way.id && m.role !== 'inner';
+             }

 
 

-       var tiler$2 = utilTiler();
-       var dispatch$3 = dispatch('loaded');
-       var _tileZoom$2 = 14;
-       var _osmoseUrlRoot = 'https://osmose.openstreetmap.fr/api/0.3';
-       var _osmoseData = {
-         icons: {},
-         items: []
-       }; // This gets reassigned if reset
+             if (members.some(isThisOuter)) {
+               relation = relation.mergeTags(way.tags);
+               graph = graph.replace(way.update({
+                 tags: {}
+               }));
+             }
+           });
+           return graph.replace(relation.update({
+             members: members,
+             tags: utilObjectOmit(relation.tags, ['area'])
+           }));
+         };

 
 

-       var _cache$2;
+         action.disabled = function (graph) {
+           var entities = groupEntities(graph);

 
 

-       function abortRequest$2(controller) {
-         if (controller) {
-           controller.abort();
-         }
-       }
+           if (entities.other.length > 0 || entities.closedWay.length + entities.multipolygon.length < 2) {
+             return 'not_eligible';
+           }

 
 

-       function abortUnwantedRequests$2(cache, tiles) {
-         Object.keys(cache.inflightTile).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k === tile.id;
-           });
+           if (!entities.multipolygon.every(function (r) {
+             return r.isComplete(graph);
+           })) {
+             return 'incomplete_relation';
+           }

 
 

-           if (!wanted) {
-             abortRequest$2(cache.inflightTile[k]);
-             delete cache.inflightTile[k];
+           if (!entities.multipolygon.length) {
+             var sharedMultipolygons = [];
+             entities.closedWay.forEach(function (way, i) {
+               if (i === 0) {
+                 sharedMultipolygons = graph.parentMultipolygons(way);
+               } else {
+                 sharedMultipolygons = utilArrayIntersection(sharedMultipolygons, graph.parentMultipolygons(way));
+               }
+             });
+             sharedMultipolygons = sharedMultipolygons.filter(function (relation) {
+               return relation.members.length === entities.closedWay.length;
+             });
+
+             if (sharedMultipolygons.length) {
+               // don't create a new multipolygon if it'd be redundant
+               return 'not_eligible';
+             }
+           } else if (entities.closedWay.some(function (way) {
+             return utilArrayIntersection(graph.parentMultipolygons(way), entities.multipolygon).length;
+           })) {
+             // don't add a way to a multipolygon again if it's already a member
+             return 'not_eligible';

            }
            }

-         });
+         };
+
+         return action;

        }
 
        }
 

-       function encodeIssueRtree$2(d) {
-         return {
-           minX: d.loc[0],
-           minY: d.loc[1],
-           maxX: d.loc[0],
-           maxY: d.loc[1],
-           data: d
-         };
-       } // Replace or remove QAItem from rtree
+       var DESCRIPTORS = descriptors;
+       var objectDefinePropertyModule = objectDefineProperty;
+       var regExpFlags = regexpFlags$1;
+       var fails$4 = fails$N;

 
 

+       var FORCED$2 = DESCRIPTORS && fails$4(function () {
+         // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+         return Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags').get.call({ dotAll: true, sticky: true }) !== 'sy';
+       });

 
 

-       function updateRtree$2(item, replace) {
-         _cache$2.rtree.remove(item, function (a, b) {
-           return a.data.id === b.data.id;
-         });
+       // `RegExp.prototype.flags` getter
+       // https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
+       if (FORCED$2) objectDefinePropertyModule.f(RegExp.prototype, 'flags', {
+         configurable: true,
+         get: regExpFlags
+       });

 
 

-         if (replace) {
-           _cache$2.rtree.insert(item);
-         }
-       } // Issues shouldn't obscure each other
+       var fastDeepEqual = function equal(a, b) {
+         if (a === b) return true;

 
 

+         if (a && b && _typeof(a) == 'object' && _typeof(b) == 'object') {
+           if (a.constructor !== b.constructor) return false;
+           var length, i, keys;

 
 

-       function preventCoincident$1(loc) {
-         var coincident = false;
+           if (Array.isArray(a)) {
+             length = a.length;
+             if (length != b.length) return false;

 
 

-         do {
-           // first time, move marker up. after that, move marker right.
-           var delta = coincident ? [0.00001, 0] : [0, 0.00001];
-           loc = geoVecAdd(loc, delta);
-           var bbox = geoExtent(loc).bbox();
-           coincident = _cache$2.rtree.search(bbox).length;
-         } while (coincident);
+             for (i = length; i-- !== 0;) {
+               if (!equal(a[i], b[i])) return false;
+             }

 
 

-         return loc;
-       }
+             return true;
+           }

 
 

-       var serviceOsmose = {
-         title: 'osmose',
-         init: function init() {
-           _mainFileFetcher.get('qa_data').then(function (d) {
-             _osmoseData = d.osmose;
-             _osmoseData.items = Object.keys(d.osmose.icons).map(function (s) {
-               return s.split('-')[0];
-             }).reduce(function (unique, item) {
-               return unique.indexOf(item) !== -1 ? unique : [].concat(_toConsumableArray(unique), [item]);
-             }, []);
-           });
+           if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
+           if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
+           if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
+           keys = Object.keys(a);
+           length = keys.length;
+           if (length !== Object.keys(b).length) return false;
+
+           for (i = length; i-- !== 0;) {
+             if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
+           }

 
 

-           if (!_cache$2) {
-             this.reset();
+           for (i = length; i-- !== 0;) {
+             var key = keys[i];
+             if (!equal(a[key], b[key])) return false;

            }
 
            }
 

-           this.event = utilRebind(this, dispatch$3, 'on');
-         },
-         reset: function reset() {
-           var _strings = {};
-           var _colors = {};
+           return true;
+         } // true if both NaN, false otherwise

 
 

-           if (_cache$2) {
-             Object.values(_cache$2.inflightTile).forEach(abortRequest$2); // Strings and colors are static and should not be re-populated

 
 

-             _strings = _cache$2.strings;
-             _colors = _cache$2.colors;
+         return a !== a && b !== b;
+       };
+
+       // J. W. Hunt and M. D. McIlroy, An algorithm for differential buffer
+       // comparison, Bell Telephone Laboratories CSTR #41 (1976)
+       // http://www.cs.dartmouth.edu/~doug/
+       // https://en.wikipedia.org/wiki/Longest_common_subsequence_problem
+       //
+       // Expects two arrays, finds longest common sequence
+
+       function LCS(buffer1, buffer2) {
+         var equivalenceClasses = {};
+
+         for (var j = 0; j < buffer2.length; j++) {
+           var item = buffer2[j];
+
+           if (equivalenceClasses[item]) {
+             equivalenceClasses[item].push(j);
+           } else {
+             equivalenceClasses[item] = [j];

            }
            }

+         }

 
 

-           _cache$2 = {
-             data: {},
-             loadedTile: {},
-             inflightTile: {},
-             inflightPost: {},
-             closed: {},
-             rtree: new RBush(),
-             strings: _strings,
-             colors: _colors
-           };
-         },
-         loadIssues: function loadIssues(projection) {
-           var _this = this;
+         var NULLRESULT = {
+           buffer1index: -1,
+           buffer2index: -1,
+           chain: null
+         };
+         var candidates = [NULLRESULT];

 
 

-           var params = {
-             // Tiles return a maximum # of issues
-             // So we want to filter our request for only types iD supports
-             item: _osmoseData.items
-           }; // determine the needed tiles to cover the view
+         for (var i = 0; i < buffer1.length; i++) {
+           var _item = buffer1[i];
+           var buffer2indices = equivalenceClasses[_item] || [];
+           var r = 0;
+           var c = candidates[0];

 
 

-           var tiles = tiler$2.zoomExtent([_tileZoom$2, _tileZoom$2]).getTiles(projection); // abort inflight requests that are no longer needed
+           for (var jx = 0; jx < buffer2indices.length; jx++) {
+             var _j = buffer2indices[jx];
+             var s = void 0;

 
 

-           abortUnwantedRequests$2(_cache$2, tiles); // issue new requests..
+             for (s = r; s < candidates.length; s++) {
+               if (candidates[s].buffer2index < _j && (s === candidates.length - 1 || candidates[s + 1].buffer2index > _j)) {
+                 break;
+               }
+             }

 
 

-           tiles.forEach(function (tile) {
-             if (_cache$2.loadedTile[tile.id] || _cache$2.inflightTile[tile.id]) return;
+             if (s < candidates.length) {
+               var newCandidate = {
+                 buffer1index: i,
+                 buffer2index: _j,
+                 chain: candidates[s]
+               };

 
 

-             var _tile$xyz = _slicedToArray(tile.xyz, 3),
-                 x = _tile$xyz[0],
-                 y = _tile$xyz[1],
-                 z = _tile$xyz[2];
+               if (r === candidates.length) {
+                 candidates.push(c);
+               } else {
+                 candidates[r] = c;
+               }

 
 

-             var url = "".concat(_osmoseUrlRoot, "/issues/").concat(z, "/").concat(x, "/").concat(y, ".json?") + utilQsString(params);
-             var controller = new AbortController();
-             _cache$2.inflightTile[tile.id] = controller;
-             d3_json(url, {
-               signal: controller.signal
-             }).then(function (data) {
-               delete _cache$2.inflightTile[tile.id];
-               _cache$2.loadedTile[tile.id] = true;
+               r = s + 1;
+               c = newCandidate;

 
 

-               if (data.features) {
-                 data.features.forEach(function (issue) {
-                   var _issue$properties = issue.properties,
-                       item = _issue$properties.item,
-                       cl = _issue$properties["class"],
-                       id = _issue$properties.uuid;
-                   /* Osmose issues are uniquely identified by a unique
-                     `item` and `class` combination (both integer values) */
+               if (r === candidates.length) {
+                 break; // no point in examining further (j)s
+               }
+             }
+           }

 
 

-                   var itemType = "".concat(item, "-").concat(cl); // Filter out unsupported issue types (some are too specific or advanced)
+           candidates[r] = c;
+         } // At this point, we know the LCS: it's in the reverse of the
+         // linked-list through .chain of candidates[candidates.length - 1].

 
 

-                   if (itemType in _osmoseData.icons) {
-                     var loc = issue.geometry.coordinates; // lon, lat

 
 

-                     loc = preventCoincident$1(loc);
-                     var d = new QAItem(loc, _this, itemType, id, {
-                       item: item
-                     }); // Setting elems here prevents UI detail requests
+         return candidates[candidates.length - 1];
+       } // We apply the LCS to build a 'comm'-style picture of the
+       // offsets and lengths of mismatched chunks in the input
+       // buffers. This is used by diff3MergeRegions.

 
 

-                     if (item === 8300 || item === 8360) {
-                       d.elems = [];
-                     }

 
 

-                     _cache$2.data[d.id] = d;
+       function diffIndices(buffer1, buffer2) {
+         var lcs = LCS(buffer1, buffer2);
+         var result = [];
+         var tail1 = buffer1.length;
+         var tail2 = buffer2.length;

 
 

-                     _cache$2.rtree.insert(encodeIssueRtree$2(d));
-                   }
-                 });
-               }
+         for (var candidate = lcs; candidate !== null; candidate = candidate.chain) {
+           var mismatchLength1 = tail1 - candidate.buffer1index - 1;
+           var mismatchLength2 = tail2 - candidate.buffer2index - 1;
+           tail1 = candidate.buffer1index;
+           tail2 = candidate.buffer2index;

 
 

-               dispatch$3.call('loaded');
-             })["catch"](function () {
-               delete _cache$2.inflightTile[tile.id];
-               _cache$2.loadedTile[tile.id] = true;
+           if (mismatchLength1 || mismatchLength2) {
+             result.push({
+               buffer1: [tail1 + 1, mismatchLength1],
+               buffer1Content: buffer1.slice(tail1 + 1, tail1 + 1 + mismatchLength1),
+               buffer2: [tail2 + 1, mismatchLength2],
+               buffer2Content: buffer2.slice(tail2 + 1, tail2 + 1 + mismatchLength2)

              });
              });

-           });
-         },
-         loadIssueDetail: function loadIssueDetail(issue) {
-           var _this2 = this;
-
-           // Issue details only need to be fetched once
-           if (issue.elems !== undefined) {
-             return Promise.resolve(issue);

            }
            }

+         }

 
 

-           var url = "".concat(_osmoseUrlRoot, "/issue/").concat(issue.id, "?langs=").concat(_mainLocalizer.localeCode());
+         result.reverse();
+         return result;
+       } // We apply the LCS to build a JSON representation of a
+       // independently derived from O, returns a fairly complicated
+       // internal representation of merge decisions it's taken. The
+       // interested reader may wish to consult
+       //
+       // Sanjeev Khanna, Keshav Kunal, and Benjamin C. Pierce.
+       // 'A Formal Investigation of ' In Arvind and Prasad,
+       // editors, Foundations of Software Technology and Theoretical
+       // Computer Science (FSTTCS), December 2007.
+       //
+       // (http://www.cis.upenn.edu/~bcpierce/papers/diff3-short.pdf)
+       //

 
 

-           var cacheDetails = function cacheDetails(data) {
-             // Associated elements used for highlighting
-             // Assign directly for immediate use in the callback
-             issue.elems = data.elems.map(function (e) {
-               return e.type.substring(0, 1) + e.id;
-             }); // Some issues have instance specific detail in a subtitle

 
 

-             issue.detail = data.subtitle ? marked_1(data.subtitle.auto) : '';
+       function diff3MergeRegions(a, o, b) {
+         // "hunks" are array subsets where `a` or `b` are different from `o`
+         // https://www.gnu.org/software/diffutils/manual/html_node/diff3-Hunks.html
+         var hunks = [];

 
 

-             _this2.replaceItem(issue);
-           };
+         function addHunk(h, ab) {
+           hunks.push({
+             ab: ab,
+             oStart: h.buffer1[0],
+             oLength: h.buffer1[1],
+             // length of o to remove
+             abStart: h.buffer2[0],
+             abLength: h.buffer2[1] // length of a/b to insert
+             // abContent: (ab === 'a' ? a : b).slice(h.buffer2[0], h.buffer2[0] + h.buffer2[1])

 
 

-           return d3_json(url).then(cacheDetails).then(function () {
-             return issue;

            });
            });

-         },
-         loadStrings: function loadStrings() {
-           var locale = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _mainLocalizer.localeCode();
-           var items = Object.keys(_osmoseData.icons);
+         }

 
 

-           if (locale in _cache$2.strings && Object.keys(_cache$2.strings[locale]).length === items.length) {
-             return Promise.resolve(_cache$2.strings[locale]);
-           } // May be partially populated already if some requests were successful
+         diffIndices(o, a).forEach(function (item) {
+           return addHunk(item, 'a');
+         });
+         diffIndices(o, b).forEach(function (item) {
+           return addHunk(item, 'b');
+         });
+         hunks.sort(function (x, y) {
+           return x.oStart - y.oStart;
+         });
+         var results = [];
+         var currOffset = 0;

 
 

+         function advanceTo(endOffset) {
+           if (endOffset > currOffset) {
+             results.push({
+               stable: true,
+               buffer: 'o',
+               bufferStart: currOffset,
+               bufferLength: endOffset - currOffset,
+               bufferContent: o.slice(currOffset, endOffset)
+             });
+             currOffset = endOffset;
+           }
+         }

 
 

-           if (!(locale in _cache$2.strings)) {
-             _cache$2.strings[locale] = {};
-           } // Only need to cache strings for supported issue types
-           // Using multiple individual item + class requests to reduce fetched data size
+         while (hunks.length) {
+           var hunk = hunks.shift();
+           var regionStart = hunk.oStart;
+           var regionEnd = hunk.oStart + hunk.oLength;
+           var regionHunks = [hunk];
+           advanceTo(regionStart); // Try to pull next overlapping hunk into this region

 
 

+           while (hunks.length) {
+             var nextHunk = hunks[0];
+             var nextHunkStart = nextHunk.oStart;
+             if (nextHunkStart > regionEnd) break; // no overlap

 
 

-           var allRequests = items.map(function (itemType) {
-             // No need to request data we already have
-             if (itemType in _cache$2.strings[locale]) return null;
+             regionEnd = Math.max(regionEnd, nextHunkStart + nextHunk.oLength);
+             regionHunks.push(hunks.shift());
+           }

 
 

-             var cacheData = function cacheData(data) {
-               // Bunch of nested single value arrays of objects
-               var _data$categories = _slicedToArray(data.categories, 1),
-                   _data$categories$ = _data$categories[0],
-                   cat = _data$categories$ === void 0 ? {
-                 items: []
-               } : _data$categories$;
+           if (regionHunks.length === 1) {
+             // Only one hunk touches this region, meaning that there is no conflict here.
+             // Either `a` or `b` is inserting into a region of `o` unchanged by the other.
+             if (hunk.abLength > 0) {
+               var buffer = hunk.ab === 'a' ? a : b;
+               results.push({
+                 stable: true,
+                 buffer: hunk.ab,
+                 bufferStart: hunk.abStart,
+                 bufferLength: hunk.abLength,
+                 bufferContent: buffer.slice(hunk.abStart, hunk.abStart + hunk.abLength)
+               });
+             }
+           } else {
+             // A true a/b conflict. Determine the bounds involved from `a`, `o`, and `b`.
+             // Effectively merge all the `a` hunks into one giant hunk, then do the
+             // same for the `b` hunks; then, correct for skew in the regions of `o`
+             // that each side changed, and report appropriate spans for the three sides.
+             var bounds = {
+               a: [a.length, -1, o.length, -1],
+               b: [b.length, -1, o.length, -1]
+             };

 
 

-               var _cat$items = _slicedToArray(cat.items, 1),
-                   _cat$items$ = _cat$items[0],
-                   item = _cat$items$ === void 0 ? {
-                 "class": []
-               } : _cat$items$;
+             while (regionHunks.length) {
+               hunk = regionHunks.shift();
+               var oStart = hunk.oStart;
+               var oEnd = oStart + hunk.oLength;
+               var abStart = hunk.abStart;
+               var abEnd = abStart + hunk.abLength;
+               var _b = bounds[hunk.ab];
+               _b[0] = Math.min(abStart, _b[0]);
+               _b[1] = Math.max(abEnd, _b[1]);
+               _b[2] = Math.min(oStart, _b[2]);
+               _b[3] = Math.max(oEnd, _b[3]);
+             }

 
 

-               var _item$class = _slicedToArray(item["class"], 1),
-                   _item$class$ = _item$class[0],
-                   cl = _item$class$ === void 0 ? null : _item$class$; // If null default value is reached, data wasn't as expected (or was empty)
+             var aStart = bounds.a[0] + (regionStart - bounds.a[2]);
+             var aEnd = bounds.a[1] + (regionEnd - bounds.a[3]);
+             var bStart = bounds.b[0] + (regionStart - bounds.b[2]);
+             var bEnd = bounds.b[1] + (regionEnd - bounds.b[3]);
+             var result = {
+               stable: false,
+               aStart: aStart,
+               aLength: aEnd - aStart,
+               aContent: a.slice(aStart, aEnd),
+               oStart: regionStart,
+               oLength: regionEnd - regionStart,
+               oContent: o.slice(regionStart, regionEnd),
+               bStart: bStart,
+               bLength: bEnd - bStart,
+               bContent: b.slice(bStart, bEnd)
+             };
+             results.push(result);
+           }

 
 

+           currOffset = regionEnd;
+         }

 
 

-               if (!cl) {
-                 /* eslint-disable no-console */
-                 console.log("Osmose strings request (".concat(itemType, ") had unexpected data"));
-                 /* eslint-enable no-console */
+         advanceTo(o.length);
+         return results;
+       } // Applies the output of diff3MergeRegions to actually
+       // construct the merged buffer; the returned result alternates
+       // between 'ok' and 'conflict' blocks.
+       // A "false conflict" is where `a` and `b` both change the same from `o`

 
 

-                 return;
-               } // Cache served item colors to automatically style issue markers later

 
 

+       function diff3Merge(a, o, b, options) {
+         var defaults = {
+           excludeFalseConflicts: true,
+           stringSeparator: /\s+/
+         };
+         options = Object.assign(defaults, options);
+         var aString = typeof a === 'string';
+         var oString = typeof o === 'string';
+         var bString = typeof b === 'string';
+         if (aString) a = a.split(options.stringSeparator);
+         if (oString) o = o.split(options.stringSeparator);
+         if (bString) b = b.split(options.stringSeparator);
+         var results = [];
+         var regions = diff3MergeRegions(a, o, b);
+         var okBuffer = [];

 
 

-               var itemInt = item.item,
-                   color = item.color;
+         function flushOk() {
+           if (okBuffer.length) {
+             results.push({
+               ok: okBuffer
+             });
+           }

 
 

-               if (/^#[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}/.test(color)) {
-                 _cache$2.colors[itemInt] = color;
-               } // Value of root key will be null if no string exists
-               // If string exists, value is an object with key 'auto' for string
+           okBuffer = [];
+         }

 
 

+         function isFalseConflict(a, b) {
+           if (a.length !== b.length) return false;

 
 

-               var title = cl.title,
-                   detail = cl.detail,
-                   fix = cl.fix,
-                   trap = cl.trap; // Osmose titles shouldn't contain markdown
+           for (var i = 0; i < a.length; i++) {
+             if (a[i] !== b[i]) return false;
+           }

 
 

-               var issueStrings = {};
-               if (title) issueStrings.title = title.auto;
-               if (detail) issueStrings.detail = marked_1(detail.auto);
-               if (trap) issueStrings.trap = marked_1(trap.auto);
-               if (fix) issueStrings.fix = marked_1(fix.auto);
-               _cache$2.strings[locale][itemType] = issueStrings;
-             };
+           return true;
+         }

 
 

-             var _itemType$split = itemType.split('-'),
-                 _itemType$split2 = _slicedToArray(_itemType$split, 2),
-                 item = _itemType$split2[0],
-                 cl = _itemType$split2[1]; // Osmose API falls back to English strings where untranslated or if locale doesn't exist
+         regions.forEach(function (region) {
+           if (region.stable) {
+             var _okBuffer;

 
 

+             (_okBuffer = okBuffer).push.apply(_okBuffer, _toConsumableArray(region.bufferContent));
+           } else {
+             if (options.excludeFalseConflicts && isFalseConflict(region.aContent, region.bContent)) {
+               var _okBuffer2;

 
 

-             var url = "".concat(_osmoseUrlRoot, "/items/").concat(item, "/class/").concat(cl, "?langs=").concat(locale);
-             return d3_json(url).then(cacheData);
-           }).filter(Boolean);
-           return Promise.all(allRequests).then(function () {
-             return _cache$2.strings[locale];
-           });
-         },
-         getStrings: function getStrings(itemType) {
-           var locale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _mainLocalizer.localeCode();
-           // No need to fallback to English, Osmose API handles this for us
-           return locale in _cache$2.strings ? _cache$2.strings[locale][itemType] : {};
-         },
-         getColor: function getColor(itemType) {
-           return itemType in _cache$2.colors ? _cache$2.colors[itemType] : '#FFFFFF';
-         },
-         postUpdate: function postUpdate(issue, callback) {
-           var _this3 = this;
+               (_okBuffer2 = okBuffer).push.apply(_okBuffer2, _toConsumableArray(region.aContent));
+             } else {
+               flushOk();
+               results.push({
+                 conflict: {
+                   a: region.aContent,
+                   aIndex: region.aStart,
+                   o: region.oContent,
+                   oIndex: region.oStart,
+                   b: region.bContent,
+                   bIndex: region.bStart
+                 }
+               });
+             }
+           }
+         });
+         flushOk();
+         return results;
+       }

 
 

-           if (_cache$2.inflightPost[issue.id]) {
-             return callback({
-               message: 'Issue update already inflight',
-               status: -2
-             }, issue);
-           } // UI sets the status to either 'done' or 'false'
+       function actionMergeRemoteChanges(id, localGraph, remoteGraph, discardTags, formatUser) {
+         discardTags = discardTags || {};
+         var _option = 'safe'; // 'safe', 'force_local', 'force_remote'

 
 

+         var _conflicts = [];

 
 

-           var url = "".concat(_osmoseUrlRoot, "/issue/").concat(issue.id, "/").concat(issue.newStatus);
-           var controller = new AbortController();
+         function user(d) {
+           return typeof formatUser === 'function' ? formatUser(d) : d;
+         }

 
 

-           var after = function after() {
-             delete _cache$2.inflightPost[issue.id];
+         function mergeLocation(remote, target) {
+           function pointEqual(a, b) {
+             var epsilon = 1e-6;
+             return Math.abs(a[0] - b[0]) < epsilon && Math.abs(a[1] - b[1]) < epsilon;
+           }

 
 

-             _this3.removeItem(issue);
+           if (_option === 'force_local' || pointEqual(target.loc, remote.loc)) {
+             return target;
+           }

 
 

-             if (issue.newStatus === 'done') {
-               // Keep track of the number of issues closed per `item` to tag the changeset
-               if (!(issue.item in _cache$2.closed)) {
-                 _cache$2.closed[issue.item] = 0;
-               }
+           if (_option === 'force_remote') {
+             return target.update({
+               loc: remote.loc
+             });
+           }

 
 

-               _cache$2.closed[issue.item] += 1;
-             }
+           _conflicts.push(_t('merge_remote_changes.conflict.location', {
+             user: user(remote.user)
+           }));

 
 

-             if (callback) callback(null, issue);
-           };
+           return target;
+         }

 
 

-           _cache$2.inflightPost[issue.id] = controller;
-           fetch(url, {
-             signal: controller.signal
-           }).then(after)["catch"](function (err) {
-             delete _cache$2.inflightPost[issue.id];
-             if (callback) callback(err.message);
-           });
-         },
-         // Get all cached QAItems covering the viewport
-         getItems: function getItems(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           return _cache$2.rtree.search(bbox).map(function (d) {
-             return d.data;
-           });
-         },
-         // Get a QAItem from cache
-         // NOTE: Don't change method name until UI v3 is merged
-         getError: function getError(id) {
-           return _cache$2.data[id];
-         },
-         // get the name of the icon to display for this item
-         getIcon: function getIcon(itemType) {
-           return _osmoseData.icons[itemType];
-         },
-         // Replace a single QAItem in the cache
-         replaceItem: function replaceItem(item) {
-           if (!(item instanceof QAItem) || !item.id) return;
-           _cache$2.data[item.id] = item;
-           updateRtree$2(encodeIssueRtree$2(item), true); // true = replace
+         function mergeNodes(base, remote, target) {
+           if (_option === 'force_local' || fastDeepEqual(target.nodes, remote.nodes)) {
+             return target;
+           }

 
 

-           return item;
-         },
-         // Remove a single QAItem from the cache
-         removeItem: function removeItem(item) {
-           if (!(item instanceof QAItem) || !item.id) return;
-           delete _cache$2.data[item.id];
-           updateRtree$2(encodeIssueRtree$2(item), false); // false = remove
-         },
-         // Used to populate `closed:osmose:*` changeset tags
-         getClosedCounts: function getClosedCounts() {
-           return _cache$2.closed;
-         },
-         itemURL: function itemURL(item) {
-           return "https://osmose.openstreetmap.fr/en/error/".concat(item.id);
-         }
-       };
+           if (_option === 'force_remote') {
+             return target.update({
+               nodes: remote.nodes
+             });
+           }

 
 

-       var apibase = 'https://a.mapillary.com/v3/';
-       var viewercss = 'mapillary-js/mapillary.min.css';
-       var viewerjs = 'mapillary-js/mapillary.min.js';
-       var clientId = 'NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1ZWYyMmYwNjdmNDdlNmVi';
-       var mapFeatureConfig = {
-         values: ['construction--flat--crosswalk-plain', 'marking--discrete--crosswalk-zebra', 'object--banner', 'object--bench', 'object--bike-rack', 'object--billboard', 'object--catch-basin', 'object--cctv-camera', 'object--fire-hydrant', 'object--mailbox', 'object--manhole', 'object--phone-booth', 'object--sign--advertisement', 'object--sign--information', 'object--sign--store', 'object--street-light', 'object--support--utility-pole', 'object--traffic-light--*', 'object--traffic-light--pedestrians', 'object--trash-can'].join(',')
-       };
-       var maxResults = 1000;
-       var tileZoom = 14;
-       var tiler$3 = utilTiler().zoomExtent([tileZoom, tileZoom]).skipNullIsland(true);
-       var dispatch$4 = dispatch('change', 'loadedImages', 'loadedSigns', 'loadedMapFeatures', 'bearingChanged', 'nodeChanged');
-       var _mlyFallback = false;
+           var ccount = _conflicts.length;
+           var o = base.nodes || [];
+           var a = target.nodes || [];
+           var b = remote.nodes || [];
+           var nodes = [];
+           var hunks = diff3Merge(a, o, b, {
+             excludeFalseConflicts: true
+           });

 
 

-       var _mlyCache;
+           for (var i = 0; i < hunks.length; i++) {
+             var hunk = hunks[i];

 
 

-       var _mlyClicks;
+             if (hunk.ok) {
+               nodes.push.apply(nodes, hunk.ok);
+             } else {
+               // for all conflicts, we can assume c.a !== c.b
+               // because `diff3Merge` called with `true` option to exclude false conflicts..
+               var c = hunk.conflict;

 
 

-       var _mlyActiveImage;
+               if (fastDeepEqual(c.o, c.a)) {
+                 // only changed remotely
+                 nodes.push.apply(nodes, c.b);
+               } else if (fastDeepEqual(c.o, c.b)) {
+                 // only changed locally
+                 nodes.push.apply(nodes, c.a);
+               } else {
+                 // changed both locally and remotely
+                 _conflicts.push(_t('merge_remote_changes.conflict.nodelist', {
+                   user: user(remote.user)
+                 }));

 
 

-       var _mlySelectedImageKey;
+                 break;
+               }
+             }
+           }

 
 

-       var _mlyViewer;
+           return _conflicts.length === ccount ? target.update({
+             nodes: nodes
+           }) : target;
+         }

 
 

-       var _mlyViewerFilter = ['all'];
+         function mergeChildren(targetWay, children, updates, graph) {
+           function isUsed(node, targetWay) {
+             var hasInterestingParent = graph.parentWays(node).some(function (way) {
+               return way.id !== targetWay.id;
+             });
+             return node.hasInterestingTags() || hasInterestingParent || graph.parentRelations(node).length > 0;
+           }

 
 

-       var _loadViewerPromise;
+           var ccount = _conflicts.length;

 
 

-       var _mlyHighlightedDetection;
+           for (var i = 0; i < children.length; i++) {
+             var id = children[i];
+             var node = graph.hasEntity(id); // remove unused childNodes..

 
 

-       var _mlyShowFeatureDetections = false;
-       var _mlyShowSignDetections = false;
+             if (targetWay.nodes.indexOf(id) === -1) {
+               if (node && !isUsed(node, targetWay)) {
+                 updates.removeIds.push(id);
+               }

 
 

-       function abortRequest$3(controller) {
-         controller.abort();
-       }
+               continue;
+             } // restore used childNodes..

 
 

-       function loadTiles(which, url, projection) {
-         var currZoom = Math.floor(geoScaleToZoom(projection.scale()));
-         var tiles = tiler$3.getTiles(projection); // abort inflight requests that are no longer needed

 
 

-         var cache = _mlyCache[which];
-         Object.keys(cache.inflight).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k.indexOf(tile.id + ',') === 0;
-           });
+             var local = localGraph.hasEntity(id);
+             var remote = remoteGraph.hasEntity(id);
+             var target;

 
 

-           if (!wanted) {
-             abortRequest$3(cache.inflight[k]);
-             delete cache.inflight[k];
-           }
-         });
-         tiles.forEach(function (tile) {
-           loadNextTilePage(which, currZoom, url, tile);
-         });
-       }
+             if (_option === 'force_remote' && remote && remote.visible) {
+               updates.replacements.push(remote);
+             } else if (_option === 'force_local' && local) {
+               target = osmEntity(local);

 
 

-       function loadNextTilePage(which, currZoom, url, tile) {
-         var cache = _mlyCache[which];
-         var rect = tile.extent.rectangle();
-         var maxPages = maxPageAtZoom(currZoom);
-         var nextPage = cache.nextPage[tile.id] || 0;
-         var nextURL = cache.nextURL[tile.id] || url + utilQsString({
-           per_page: maxResults,
-           page: nextPage,
-           client_id: clientId,
-           bbox: [rect[0], rect[1], rect[2], rect[3]].join(',')
-         });
-         if (nextPage > maxPages) return;
-         var id = tile.id + ',' + String(nextPage);
-         if (cache.loaded[id] || cache.inflight[id]) return;
-         var controller = new AbortController();
-         cache.inflight[id] = controller;
-         var options = {
-           method: 'GET',
-           signal: controller.signal,
-           headers: {
-             'Content-Type': 'application/json'
-           }
-         };
-         fetch(nextURL, options).then(function (response) {
-           if (!response.ok) {
-             throw new Error(response.status + ' ' + response.statusText);
-           }
+               if (remote) {
+                 target = target.update({
+                   version: remote.version
+                 });
+               }

 
 

-           var linkHeader = response.headers.get('Link');
+               updates.replacements.push(target);
+             } else if (_option === 'safe' && local && remote && local.version !== remote.version) {
+               target = osmEntity(local, {
+                 version: remote.version
+               });

 
 

-           if (linkHeader) {
-             var pagination = parsePagination(linkHeader);
+               if (remote.visible) {
+                 target = mergeLocation(remote, target);
+               } else {
+                 _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
+                   user: user(remote.user)
+                 }));
+               }

 
 

-             if (pagination.next) {
-               cache.nextURL[tile.id] = pagination.next;
+               if (_conflicts.length !== ccount) break;
+               updates.replacements.push(target);

              }
            }
 
              }
            }
 

-           return response.json();
-         }).then(function (data) {
-           cache.loaded[id] = true;
-           delete cache.inflight[id];
+           return targetWay;
+         }

 
 

-           if (!data || !data.features || !data.features.length) {
-             throw new Error('No Data');
+         function updateChildren(updates, graph) {
+           for (var i = 0; i < updates.replacements.length; i++) {
+             graph = graph.replace(updates.replacements[i]);

            }
 
            }
 

-           var features = data.features.map(function (feature) {
-             var loc = feature.geometry.coordinates;
-             var d; // An image (shown as a green dot on the map) is a single street photo with extra
-             // information such as location, camera angle (CA), camera model, and so on.
-             // Each image feature is a GeoJSON Point
-
-             if (which === 'images') {
-               d = {
-                 loc: loc,
-                 key: feature.properties.key,
-                 ca: feature.properties.ca,
-                 captured_at: feature.properties.captured_at,
-                 captured_by: feature.properties.username,
-                 pano: feature.properties.pano
-               };
-               cache.forImageKey[d.key] = d; // cache imageKey -> image
-               // Mapillary organizes images as sequences. A sequence of images are continuously captured
-               // by a user at a give time. Sequences are shown on the map as green lines.
-               // Each sequence feature is a GeoJSON LineString
-             } else if (which === 'sequences') {
-               var sequenceKey = feature.properties.key;
-               cache.lineString[sequenceKey] = feature; // cache sequenceKey -> lineString
-
-               feature.properties.coordinateProperties.image_keys.forEach(function (imageKey) {
-                 cache.forImageKey[imageKey] = sequenceKey; // cache imageKey -> sequenceKey
-               });
-               return false; // because no `d` data worth loading into an rbush
-               // A map feature is a real world object that can be shown on a map. It could be any object
-               // recognized from images, manually added in images, or added on the map.
-               // Each map feature is a GeoJSON Point (located where the feature is)
-             } else if (which === 'map_features' || which === 'points') {
-               d = {
-                 loc: loc,
-                 key: feature.properties.key,
-                 value: feature.properties.value,
-                 "package": feature.properties["package"],
-                 detections: feature.properties.detections
-               };
-             }
+           if (updates.removeIds.length) {
+             graph = actionDeleteMultiple(updates.removeIds)(graph);
+           }

 
 

-             return {
-               minX: loc[0],
-               minY: loc[1],
-               maxX: loc[0],
-               maxY: loc[1],
-               data: d
-             };
-           }).filter(Boolean);
+           return graph;
+         }

 
 

-           if (cache.rtree && features) {
-             cache.rtree.load(features);
+         function mergeMembers(remote, target) {
+           if (_option === 'force_local' || fastDeepEqual(target.members, remote.members)) {
+             return target;

            }
 
            }
 

-           if (data.features.length === maxResults) {
-             // more pages to load
-             cache.nextPage[tile.id] = nextPage + 1;
-             loadNextTilePage(which, currZoom, url, tile);
-           } else {
-             cache.nextPage[tile.id] = Infinity; // no more pages to load
+           if (_option === 'force_remote') {
+             return target.update({
+               members: remote.members
+             });

            }
 
            }
 

-           if (which === 'images' || which === 'sequences') {
-             dispatch$4.call('loadedImages');
-           } else if (which === 'map_features') {
-             dispatch$4.call('loadedSigns');
-           } else if (which === 'points') {
-             dispatch$4.call('loadedMapFeatures');
-           }
-         })["catch"](function () {
-           cache.loaded[id] = true;
-           delete cache.inflight[id];
-         });
-       }
+           _conflicts.push(_t('merge_remote_changes.conflict.memberlist', {
+             user: user(remote.user)
+           }));

 
 

-       function loadData(which, url) {
-         var cache = _mlyCache[which];
-         var options = {
-           method: 'GET',
-           headers: {
-             'Content-Type': 'application/json'
-           }
-         };
-         var nextUrl = url + '&client_id=' + clientId;
-         return fetch(nextUrl, options).then(function (response) {
-           if (!response.ok) {
-             throw new Error(response.status + ' ' + response.statusText);
+           return target;
+         }
+
+         function mergeTags(base, remote, target) {
+           if (_option === 'force_local' || fastDeepEqual(target.tags, remote.tags)) {
+             return target;

            }
 
            }
 

-           return response.json();
-         }).then(function (data) {
-           if (!data || !data.features || !data.features.length) {
-             throw new Error('No Data');
+           if (_option === 'force_remote') {
+             return target.update({
+               tags: remote.tags
+             });

            }
 
            }
 

-           data.features.forEach(function (feature) {
-             var d;
+           var ccount = _conflicts.length;
+           var o = base.tags || {};
+           var a = target.tags || {};
+           var b = remote.tags || {};
+           var keys = utilArrayUnion(utilArrayUnion(Object.keys(o), Object.keys(a)), Object.keys(b)).filter(function (k) {
+             return !discardTags[k];
+           });
+           var tags = Object.assign({}, a); // shallow copy

 
 

-             if (which === 'image_detections') {
-               d = {
-                 key: feature.properties.key,
-                 image_key: feature.properties.image_key,
-                 value: feature.properties.value,
-                 "package": feature.properties["package"],
-                 shape: feature.properties.shape
-               };
+           var changed = false;

 
 

-               if (!cache.forImageKey[d.image_key]) {
-                 cache.forImageKey[d.image_key] = [];
-               }
+           for (var i = 0; i < keys.length; i++) {
+             var k = keys[i];
+
+             if (o[k] !== b[k] && a[k] !== b[k]) {
+               // changed remotely..
+               if (o[k] !== a[k]) {
+                 // changed locally..
+                 _conflicts.push(_t('merge_remote_changes.conflict.tags', {
+                   tag: k,
+                   local: a[k],
+                   remote: b[k],
+                   user: user(remote.user)
+                 }));
+               } else {
+                 // unchanged locally, accept remote change..
+                 if (b.hasOwnProperty(k)) {
+                   tags[k] = b[k];
+                 } else {
+                   delete tags[k];
+                 }

 
 

-               cache.forImageKey[d.image_key].push(d);
+                 changed = true;
+               }

              }
              }

-           });
-         });
-       }
+           }

 
 

-       function maxPageAtZoom(z) {
-         if (z < 15) return 2;
-         if (z === 15) return 5;
-         if (z === 16) return 10;
-         if (z === 17) return 20;
-         if (z === 18) return 40;
-         if (z > 18) return 80;
-       } // extract links to pages of API results
+           return changed && _conflicts.length === ccount ? target.update({
+             tags: tags
+           }) : target;
+         } //  `graph.base()` is the common ancestor of the two graphs.
+         //  `localGraph` contains user's edits up to saving
+         //  `remoteGraph` contains remote edits to modified nodes
+         //  `graph` must be a descendent of `localGraph` and may include
+         //      some conflict resolution actions performed on it.
+         //
+         //                  --- ... --- `localGraph` -- ... -- `graph`
+         //                 /
+         //  `graph.base()` --- ... --- `remoteGraph`
+         //

 
 
 
 

-       function parsePagination(links) {
-         return links.split(',').map(function (rel) {
-           var elements = rel.split(';');
+         var action = function action(graph) {
+           var updates = {
+             replacements: [],
+             removeIds: []
+           };
+           var base = graph.base().entities[id];
+           var local = localGraph.entity(id);
+           var remote = remoteGraph.entity(id);
+           var target = osmEntity(local, {
+             version: remote.version
+           }); // delete/undelete

 
 

-           if (elements.length === 2) {
-             return [/<(.+)>/.exec(elements[0])[1], /rel="(.+)"/.exec(elements[1])[1]];
-           } else {
-             return ['', ''];
-           }
-         }).reduce(function (pagination, val) {
-           pagination[val[1]] = val[0];
-           return pagination;
-         }, {});
-       } // partition viewport into higher zoom tiles
+           if (!remote.visible) {
+             if (_option === 'force_remote') {
+               return actionDeleteMultiple([id])(graph);
+             } else if (_option === 'force_local') {
+               if (target.type === 'way') {
+                 target = mergeChildren(target, utilArrayUniq(local.nodes), updates, graph);
+                 graph = updateChildren(updates, graph);
+               }

 
 

+               return graph.replace(target);
+             } else {
+               _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
+                 user: user(remote.user)
+               }));

 
 

-       function partitionViewport(projection) {
-         var z = geoScaleToZoom(projection.scale());
-         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5
+               return graph; // do nothing
+             }
+           } // merge

 
 

-         var tiler = utilTiler().zoomExtent([z2, z2]);
-         return tiler.getTiles(projection).map(function (tile) {
-           return tile.extent;
-         });
-       } // no more than `limit` results per partition.

 
 

+           if (target.type === 'node') {
+             target = mergeLocation(remote, target);
+           } else if (target.type === 'way') {
+             // pull in any child nodes that may not be present locally..
+             graph.rebase(remoteGraph.childNodes(remote), [graph], false);
+             target = mergeNodes(base, remote, target);
+             target = mergeChildren(target, utilArrayUnion(local.nodes, remote.nodes), updates, graph);
+           } else if (target.type === 'relation') {
+             target = mergeMembers(remote, target);
+           }

 
 

-       function searchLimited(limit, projection, rtree) {
-         limit = limit || 5;
-         return partitionViewport(projection).reduce(function (result, extent) {
-           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
-             return d.data;
-           });
-           return found.length ? result.concat(found) : result;
-         }, []);
-       }
+           target = mergeTags(base, remote, target);

 
 

-       var serviceMapillary = {
-         init: function init() {
-           if (!_mlyCache) {
-             this.reset();
+           if (!_conflicts.length) {
+             graph = updateChildren(updates, graph).replace(target);

            }
 
            }
 

-           this.event = utilRebind(this, dispatch$4, 'on');
-         },
-         reset: function reset() {
-           if (_mlyCache) {
-             Object.values(_mlyCache.images.inflight).forEach(abortRequest$3);
-             Object.values(_mlyCache.image_detections.inflight).forEach(abortRequest$3);
-             Object.values(_mlyCache.map_features.inflight).forEach(abortRequest$3);
-             Object.values(_mlyCache.points.inflight).forEach(abortRequest$3);
-             Object.values(_mlyCache.sequences.inflight).forEach(abortRequest$3);
-           }
+           return graph;
+         };

 
 

-           _mlyCache = {
-             images: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               nextURL: {},
-               rtree: new RBush(),
-               forImageKey: {}
-             },
-             image_detections: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               nextURL: {},
-               forImageKey: {}
-             },
-             map_features: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               nextURL: {},
-               rtree: new RBush()
-             },
-             points: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               nextURL: {},
-               rtree: new RBush()
-             },
-             sequences: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               nextURL: {},
-               rtree: new RBush(),
-               forImageKey: {},
-               lineString: {}
-             }
-           };
-           _mlySelectedImageKey = null;
-           _mlyActiveImage = null;
-           _mlyClicks = [];
-         },
-         images: function images(projection) {
-           var limit = 5;
-           return searchLimited(limit, projection, _mlyCache.images.rtree);
-         },
-         signs: function signs(projection) {
-           var limit = 5;
-           return searchLimited(limit, projection, _mlyCache.map_features.rtree);
-         },
-         mapFeatures: function mapFeatures(projection) {
-           var limit = 5;
-           return searchLimited(limit, projection, _mlyCache.points.rtree);
-         },
-         cachedImage: function cachedImage(imageKey) {
-           return _mlyCache.images.forImageKey[imageKey];
-         },
-         sequences: function sequences(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           var sequenceKeys = {}; // all sequences for images in viewport
+         action.withOption = function (opt) {
+           _option = opt;
+           return action;
+         };

 
 

-           _mlyCache.images.rtree.search(bbox).forEach(function (d) {
-             var sequenceKey = _mlyCache.sequences.forImageKey[d.data.key];
+         action.conflicts = function () {
+           return _conflicts;
+         };

 
 

-             if (sequenceKey) {
-               sequenceKeys[sequenceKey] = true;
-             }
-           }); // Return lineStrings for the sequences
+         return action;
+       }

 
 

+       // https://github.com/openstreetmap/potlatch2/blob/master/net/systemeD/halcyon/connection/actions/MoveNodeAction.as

 
 

-           return Object.keys(sequenceKeys).map(function (sequenceKey) {
-             return _mlyCache.sequences.lineString[sequenceKey];
-           });
-         },
-         signsSupported: function signsSupported() {
-           return true;
-         },
-         loadImages: function loadImages(projection) {
-           loadTiles('images', apibase + 'images?sort_by=key&', projection);
-           loadTiles('sequences', apibase + 'sequences?sort_by=key&', projection);
-         },
-         loadSigns: function loadSigns(projection) {
-           loadTiles('map_features', apibase + 'map_features?layers=trafficsigns&min_nbr_image_detections=2&sort_by=key&', projection);
-         },
-         loadMapFeatures: function loadMapFeatures(projection) {
-           loadTiles('points', apibase + 'map_features?layers=points&min_nbr_image_detections=2&sort_by=key&values=' + mapFeatureConfig.values + '&', projection);
-         },
-         ensureViewerLoaded: function ensureViewerLoaded(context) {
-           if (_loadViewerPromise) return _loadViewerPromise; // add mly-wrapper
+       function actionMove(moveIDs, tryDelta, projection, cache) {
+         var _delta = tryDelta;

 
 

-           var wrap = context.container().select('.photoviewer').selectAll('.mly-wrapper').data([0]);
-           wrap.enter().append('div').attr('id', 'ideditor-mly').attr('class', 'photo-wrapper mly-wrapper').classed('hide', true);
-           var that = this;
-           _loadViewerPromise = new Promise(function (resolve, reject) {
-             var loadedCount = 0;
+         function setupCache(graph) {
+           function canMove(nodeID) {
+             // Allow movement of any node that is in the selectedIDs list..
+             if (moveIDs.indexOf(nodeID) !== -1) return true; // Allow movement of a vertex where 2 ways meet..

 
 

-             function loaded() {
-               loadedCount += 1; // wait until both files are loaded
+             var parents = graph.parentWays(graph.entity(nodeID));
+             if (parents.length < 3) return true; // Restrict movement of a vertex where >2 ways meet, unless all parentWays are moving too..

 
 

-               if (loadedCount === 2) resolve();
+             var parentsMoving = parents.every(function (way) {
+               return cache.moving[way.id];
+             });
+             if (!parentsMoving) delete cache.moving[nodeID];
+             return parentsMoving;
+           }
+
+           function cacheEntities(ids) {
+             for (var i = 0; i < ids.length; i++) {
+               var id = ids[i];
+               if (cache.moving[id]) continue;
+               cache.moving[id] = true;
+               var entity = graph.hasEntity(id);
+               if (!entity) continue;
+
+               if (entity.type === 'node') {
+                 cache.nodes.push(id);
+                 cache.startLoc[id] = entity.loc;
+               } else if (entity.type === 'way') {
+                 cache.ways.push(id);
+                 cacheEntities(entity.nodes);
+               } else {
+                 cacheEntities(entity.members.map(function (member) {
+                   return member.id;
+                 }));
+               }

              }
              }

+           }

 
 

-             var head = select('head'); // load mapillary-viewercss
+           function cacheIntersections(ids) {
+             function isEndpoint(way, id) {
+               return !way.isClosed() && !!way.affix(id);
+             }

 
 

-             head.selectAll('#ideditor-mapillary-viewercss').data([0]).enter().append('link').attr('id', 'ideditor-mapillary-viewercss').attr('rel', 'stylesheet').attr('crossorigin', 'anonymous').attr('href', context.asset(viewercss)).on('load.serviceMapillary', loaded).on('error.serviceMapillary', function () {
-               reject();
-             }); // load mapillary-viewerjs
+             for (var i = 0; i < ids.length; i++) {
+               var id = ids[i]; // consider only intersections with 1 moved and 1 unmoved way.

 
 

-             head.selectAll('#ideditor-mapillary-viewerjs').data([0]).enter().append('script').attr('id', 'ideditor-mapillary-viewerjs').attr('crossorigin', 'anonymous').attr('src', context.asset(viewerjs)).on('load.serviceMapillary', loaded).on('error.serviceMapillary', function () {
-               reject();
-             });
-           })["catch"](function () {
-             _loadViewerPromise = null;
-           }).then(function () {
-             that.initViewer(context);
-           });
-           return _loadViewerPromise;
-         },
-         loadSignResources: function loadSignResources(context) {
-           context.ui().svgDefs.addSprites(['mapillary-sprite'], false
-           /* don't override colors */
-           );
-           return this;
-         },
-         loadObjectResources: function loadObjectResources(context) {
-           context.ui().svgDefs.addSprites(['mapillary-object-sprite'], false
-           /* don't override colors */
-           );
-           return this;
-         },
-         resetTags: function resetTags() {
-           if (_mlyViewer && !_mlyFallback) {
-             _mlyViewer.getComponent('tag').removeAll(); // remove previous detections
+               var childNodes = graph.childNodes(graph.entity(id));

 
 

-           }
-         },
-         showFeatureDetections: function showFeatureDetections(value) {
-           _mlyShowFeatureDetections = value;
+               for (var j = 0; j < childNodes.length; j++) {
+                 var node = childNodes[j];
+                 var parents = graph.parentWays(node);
+                 if (parents.length !== 2) continue;
+                 var moved = graph.entity(id);
+                 var unmoved = null;

 
 

-           if (!_mlyShowFeatureDetections && !_mlyShowSignDetections) {
-             this.resetTags();
-           }
-         },
-         showSignDetections: function showSignDetections(value) {
-           _mlyShowSignDetections = value;
+                 for (var k = 0; k < parents.length; k++) {
+                   var way = parents[k];

 
 

-           if (!_mlyShowFeatureDetections && !_mlyShowSignDetections) {
-             this.resetTags();
+                   if (!cache.moving[way.id]) {
+                     unmoved = way;
+                     break;
+                   }
+                 }
+
+                 if (!unmoved) continue; // exclude ways that are overly connected..
+
+                 if (utilArrayIntersection(moved.nodes, unmoved.nodes).length > 2) continue;
+                 if (moved.isArea() || unmoved.isArea()) continue;
+                 cache.intersections.push({
+                   nodeId: node.id,
+                   movedId: moved.id,
+                   unmovedId: unmoved.id,
+                   movedIsEP: isEndpoint(moved, node.id),
+                   unmovedIsEP: isEndpoint(unmoved, node.id)
+                 });
+               }
+             }

            }
            }

-         },
-         filterViewer: function filterViewer(context) {
-           var showsPano = context.photos().showsPanoramic();
-           var showsFlat = context.photos().showsFlat();
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
-           var filter = ['all'];
-           if (!showsPano) filter.push(['==', 'pano', false]);
-           if (!showsFlat && showsPano) filter.push(['==', 'pano', true]);
-           if (usernames && usernames.length) filter.push(['==', 'username', usernames[0]]);

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             filter.push(['>=', 'capturedAt', fromTimestamp]);
+           if (!cache) {
+             cache = {};

            }
 
            }
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             filter.push(['>=', 'capturedAt', toTimestamp]);
+           if (!cache.ok) {
+             cache.moving = {};
+             cache.intersections = [];
+             cache.replacedVertex = {};
+             cache.startLoc = {};
+             cache.nodes = [];
+             cache.ways = [];
+             cacheEntities(moveIDs);
+             cacheIntersections(cache.ways);
+             cache.nodes = cache.nodes.filter(canMove);
+             cache.ok = true;

            }
            }

+         } // Place a vertex where the moved vertex used to be, to preserve way shape..
+         //
+         //  Start:
+         //      b ---- e
+         //     / \
+         //    /   \
+         //   /     \
+         //  a       c
+         //
+         //      *               node '*' added to preserve shape
+         //     / \
+         //    /   b ---- e      way `b,e` moved here:
+         //   /     \
+         //  a       c
+         //
+         //

 
 

-           if (_mlyViewer) {
-             _mlyViewer.setFilter(filter);
+
+         function replaceMovedVertex(nodeId, wayId, graph, delta) {
+           var way = graph.entity(wayId);
+           var moved = graph.entity(nodeId);
+           var movedIndex = way.nodes.indexOf(nodeId);
+           var len, prevIndex, nextIndex;
+
+           if (way.isClosed()) {
+             len = way.nodes.length - 1;
+             prevIndex = (movedIndex + len - 1) % len;
+             nextIndex = (movedIndex + len + 1) % len;
+           } else {
+             len = way.nodes.length;
+             prevIndex = movedIndex - 1;
+             nextIndex = movedIndex + 1;

            }
 
            }
 

-           _mlyViewerFilter = filter;
-           return filter;
-         },
-         showViewer: function showViewer(context) {
-           var wrap = context.container().select('.photoviewer').classed('hide', false);
-           var isHidden = wrap.selectAll('.photo-wrapper.mly-wrapper.hide').size();
+           var prev = graph.hasEntity(way.nodes[prevIndex]);
+           var next = graph.hasEntity(way.nodes[nextIndex]); // Don't add orig vertex at endpoint..

 
 

-           if (isHidden && _mlyViewer) {
-             wrap.selectAll('.photo-wrapper:not(.mly-wrapper)').classed('hide', true);
-             wrap.selectAll('.photo-wrapper.mly-wrapper').classed('hide', false);
+           if (!prev || !next) return graph;
+           var key = wayId + '_' + nodeId;
+           var orig = cache.replacedVertex[key];

 
 

-             _mlyViewer.resize();
+           if (!orig) {
+             orig = osmNode();
+             cache.replacedVertex[key] = orig;
+             cache.startLoc[orig.id] = cache.startLoc[nodeId];

            }
 
            }
 

-           return this;
-         },
-         hideViewer: function hideViewer(context) {
-           _mlyActiveImage = null;
-           _mlySelectedImageKey = null;
+           var start, end;

 
 

-           if (!_mlyFallback && _mlyViewer) {
-             _mlyViewer.getComponent('sequence').stop();
+           if (delta) {
+             start = projection(cache.startLoc[nodeId]);
+             end = projection.invert(geoVecAdd(start, delta));
+           } else {
+             end = cache.startLoc[nodeId];

            }
 
            }
 

-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(null);
-           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
-           this.updateUrlImage(null);
-           dispatch$4.call('nodeChanged');
-           return this.setStyles(context, null, true);
-         },
-         parsePagination: parsePagination,
-         updateUrlImage: function updateUrlImage(imageKey) {
-           if (!window.mocha) {
-             var hash = utilStringQs(window.location.hash);
+           orig = orig.move(end);
+           var angle = Math.abs(geoAngle(orig, prev, projection) - geoAngle(orig, next, projection)) * 180 / Math.PI; // Don't add orig vertex if it would just make a straight line..

 
 

-             if (imageKey) {
-               hash.photo = 'mapillary/' + imageKey;
-             } else {
-               delete hash.photo;
-             }
+           if (angle > 175 && angle < 185) return graph; // moving forward or backward along way?

 
 

-             window.location.replace('#' + utilQsString(hash, true));
-           }
-         },
-         highlightDetection: function highlightDetection(detection) {
-           if (detection) {
-             _mlyHighlightedDetection = detection.detection_key;
-           }
+           var p1 = [prev.loc, orig.loc, moved.loc, next.loc].map(projection);
+           var p2 = [prev.loc, moved.loc, orig.loc, next.loc].map(projection);
+           var d1 = geoPathLength(p1);
+           var d2 = geoPathLength(p2);
+           var insertAt = d1 <= d2 ? movedIndex : nextIndex; // moving around closed loop?

 
 

-           return this;
-         },
-         initViewer: function initViewer(context) {
-           var that = this;
-           if (!window.Mapillary) return;
-           var opts = {
-             baseImageSize: 320,
-             component: {
-               cover: false,
-               keyboard: false,
-               tag: true
-             }
-           }; // Disable components requiring WebGL support
+           if (way.isClosed() && insertAt === 0) insertAt = len;
+           way = way.addNode(orig.id, insertAt);
+           return graph.replace(orig).replace(way);
+         } // Remove duplicate vertex that might have been added by
+         // replaceMovedVertex.  This is done after the unzorro checks.

 
 

-           if (!Mapillary.isSupported() && Mapillary.isFallbackSupported()) {
-             _mlyFallback = true;
-             opts.component = {
-               cover: false,
-               direction: false,
-               imagePlane: false,
-               keyboard: false,
-               mouse: false,
-               sequence: false,
-               tag: false,
-               image: true,
-               // fallback
-               navigation: true // fallback

 
 

-             };
+         function removeDuplicateVertices(wayId, graph) {
+           var way = graph.entity(wayId);
+           var epsilon = 1e-6;
+           var prev, curr;
+
+           function isInteresting(node, graph) {
+             return graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags();

            }
 
            }
 

-           _mlyViewer = new Mapillary.Viewer('ideditor-mly', clientId, null, opts);
+           for (var i = 0; i < way.nodes.length; i++) {
+             curr = graph.entity(way.nodes[i]);

 
 

-           _mlyViewer.on('nodechanged', nodeChanged);
+             if (prev && curr && geoVecEqual(prev.loc, curr.loc, epsilon)) {
+               if (!isInteresting(prev, graph)) {
+                 way = way.removeNode(prev.id);
+                 graph = graph.replace(way).remove(prev);
+               } else if (!isInteresting(curr, graph)) {
+                 way = way.removeNode(curr.id);
+                 graph = graph.replace(way).remove(curr);
+               }
+             }

 
 

-           _mlyViewer.on('bearingchanged', bearingChanged);
+             prev = curr;
+           }

 
 

-           if (_mlyViewerFilter) {
-             _mlyViewer.setFilter(_mlyViewerFilter);
-           } // Register viewer resize handler
+           return graph;
+         } // Reorder nodes around intersections that have moved..
+         //
+         //  Start:                way1.nodes: b,e         (moving)
+         //  a - b - c ----- d     way2.nodes: a,b,c,d     (static)
+         //      |                 vertex: b
+         //      e                 isEP1: true,  isEP2, false
+         //
+         //  way1 `b,e` moved here:
+         //  a ----- c = b - d
+         //              |
+         //              e
+         //
+         //  reorder nodes         way1.nodes: b,e
+         //  a ----- c - b - d     way2.nodes: a,c,b,d
+         //              |
+         //              e
+         //

 
 
 
 

-           context.ui().photoviewer.on('resize.mapillary', function () {
-             if (_mlyViewer) _mlyViewer.resize();
-           }); // nodeChanged: called after the viewer has changed images and is ready.
-           //
-           // There is some logic here to batch up clicks into a _mlyClicks array
-           // because the user might click on a lot of markers quickly and nodechanged
-           // may be called out of order asynchronously.
-           //
-           // Clicks are added to the array in `selectedImage` and removed here.
-           //
+         function unZorroIntersection(intersection, graph) {
+           var vertex = graph.entity(intersection.nodeId);
+           var way1 = graph.entity(intersection.movedId);
+           var way2 = graph.entity(intersection.unmovedId);
+           var isEP1 = intersection.movedIsEP;
+           var isEP2 = intersection.unmovedIsEP; // don't move the vertex if it is the endpoint of both ways.

 
 

-           function nodeChanged(node) {
-             that.resetTags();
-             var clicks = _mlyClicks;
-             var index = clicks.indexOf(node.key);
-             var selectedKey = _mlySelectedImageKey;
-             that.setActiveImage(node);
+           if (isEP1 && isEP2) return graph;
+           var nodes1 = graph.childNodes(way1).filter(function (n) {
+             return n !== vertex;
+           });
+           var nodes2 = graph.childNodes(way2).filter(function (n) {
+             return n !== vertex;
+           });
+           if (way1.isClosed() && way1.first() === vertex.id) nodes1.push(nodes1[0]);
+           if (way2.isClosed() && way2.first() === vertex.id) nodes2.push(nodes2[0]);
+           var edge1 = !isEP1 && geoChooseEdge(nodes1, projection(vertex.loc), projection);
+           var edge2 = !isEP2 && geoChooseEdge(nodes2, projection(vertex.loc), projection);
+           var loc; // snap vertex to nearest edge (or some point between them)..

 
 

-             if (index > -1) {
-               // `nodechanged` initiated from clicking on a marker..
-               clicks.splice(index, 1); // remove the click
-               // If `node.key` matches the current _mlySelectedImageKey, call `selectImage()`
-               // one more time to update the detections and attribution..
+           if (!isEP1 && !isEP2) {
+             var epsilon = 1e-6,
+                 maxIter = 10;

 
 

-               if (node.key === selectedKey) {
-                 that.selectImage(context, _mlySelectedImageKey, true);
-               }
-             } else {
-               // `nodechanged` initiated from the Mapillary viewer controls..
-               var loc = node.computedLatLon ? [node.computedLatLon.lon, node.computedLatLon.lat] : [node.latLon.lon, node.latLon.lat];
-               context.map().centerEase(loc);
-               that.selectImage(context, node.key, true);
+             for (var i = 0; i < maxIter; i++) {
+               loc = geoVecInterp(edge1.loc, edge2.loc, 0.5);
+               edge1 = geoChooseEdge(nodes1, projection(loc), projection);
+               edge2 = geoChooseEdge(nodes2, projection(loc), projection);
+               if (Math.abs(edge1.distance - edge2.distance) < epsilon) break;

              }
              }

+           } else if (!isEP1) {
+             loc = edge1.loc;
+           } else {
+             loc = edge2.loc;
+           }
+
+           graph = graph.replace(vertex.move(loc)); // if zorro happened, reorder nodes..

 
 

-             dispatch$4.call('nodeChanged');
+           if (!isEP1 && edge1.index !== way1.nodes.indexOf(vertex.id)) {
+             way1 = way1.removeNode(vertex.id).addNode(vertex.id, edge1.index);
+             graph = graph.replace(way1);

            }
 
            }
 

-           function bearingChanged(e) {
-             dispatch$4.call('bearingChanged', undefined, e);
+           if (!isEP2 && edge2.index !== way2.nodes.indexOf(vertex.id)) {
+             way2 = way2.removeNode(vertex.id).addNode(vertex.id, edge2.index);
+             graph = graph.replace(way2);

            }
            }

-         },
-         // Pass in the image key string as `imageKey`.
-         // This allows images to be selected from places that dont have access
-         // to the full image datum (like the street signs layer or the js viewer)
-         selectImage: function selectImage(context, imageKey, fromViewer) {
-           _mlySelectedImageKey = imageKey;
-           this.updateUrlImage(imageKey);
-           var d = _mlyCache.images.forImageKey[imageKey];
-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(d);
-           imageKey = d && d.key || imageKey;

 
 

-           if (!fromViewer && imageKey) {
-             _mlyClicks.push(imageKey);
+           return graph;
+         }
+
+         function cleanupIntersections(graph) {
+           for (var i = 0; i < cache.intersections.length; i++) {
+             var obj = cache.intersections[i];
+             graph = replaceMovedVertex(obj.nodeId, obj.movedId, graph, _delta);
+             graph = replaceMovedVertex(obj.nodeId, obj.unmovedId, graph, null);
+             graph = unZorroIntersection(obj, graph);
+             graph = removeDuplicateVertices(obj.movedId, graph);
+             graph = removeDuplicateVertices(obj.unmovedId, graph);

            }
 
            }
 

-           this.setStyles(context, null, true);
+           return graph;
+         } // check if moving way endpoint can cross an unmoved way, if so limit delta..

 
 

-           if (_mlyShowFeatureDetections) {
-             this.updateDetections(imageKey, apibase + 'image_detections?layers=points&values=' + mapFeatureConfig.values + '&image_keys=' + imageKey);
+
+         function limitDelta(graph) {
+           function moveNode(loc) {
+             return geoVecAdd(projection(loc), _delta);

            }
 
            }
 

-           if (_mlyShowSignDetections) {
-             this.updateDetections(imageKey, apibase + 'image_detections?layers=trafficsigns&image_keys=' + imageKey);
+           for (var i = 0; i < cache.intersections.length; i++) {
+             var obj = cache.intersections[i]; // Don't limit movement if this is vertex joins 2 endpoints..
+
+             if (obj.movedIsEP && obj.unmovedIsEP) continue; // Don't limit movement if this vertex is not an endpoint anyway..
+
+             if (!obj.movedIsEP) continue;
+             var node = graph.entity(obj.nodeId);
+             var start = projection(node.loc);
+             var end = geoVecAdd(start, _delta);
+             var movedNodes = graph.childNodes(graph.entity(obj.movedId));
+             var movedPath = movedNodes.map(function (n) {
+               return moveNode(n.loc);
+             });
+             var unmovedNodes = graph.childNodes(graph.entity(obj.unmovedId));
+             var unmovedPath = unmovedNodes.map(function (n) {
+               return projection(n.loc);
+             });
+             var hits = geoPathIntersections(movedPath, unmovedPath);
+
+             for (var j = 0; i < hits.length; i++) {
+               if (geoVecEqual(hits[j], end)) continue;
+               var edge = geoChooseEdge(unmovedNodes, end, projection);
+               _delta = geoVecSubtract(projection(edge.loc), start);
+             }

            }
            }

+         }

 
 

-           if (_mlyViewer && imageKey) {
-             _mlyViewer.moveToKey(imageKey)["catch"](function (e) {
-               console.error('mly3', e);
-             }); // eslint-disable-line no-console
+         var action = function action(graph) {
+           if (_delta[0] === 0 && _delta[1] === 0) return graph;
+           setupCache(graph);

 
 

+           if (cache.intersections.length) {
+             limitDelta(graph);

            }
 
            }
 

-           return this;
-         },
-         getActiveImage: function getActiveImage() {
-           return _mlyActiveImage;
-         },
-         getSelectedImageKey: function getSelectedImageKey() {
-           return _mlySelectedImageKey;
-         },
-         getSequenceKeyForImageKey: function getSequenceKeyForImageKey(imageKey) {
-           return _mlyCache.sequences.forImageKey[imageKey];
-         },
-         setActiveImage: function setActiveImage(node) {
-           if (node) {
-             _mlyActiveImage = {
-               ca: node.originalCA,
-               key: node.key,
-               loc: [node.originalLatLon.lon, node.originalLatLon.lat],
-               pano: node.pano
-             };
-           } else {
-             _mlyActiveImage = null;
+           for (var i = 0; i < cache.nodes.length; i++) {
+             var node = graph.entity(cache.nodes[i]);
+             var start = projection(node.loc);
+             var end = geoVecAdd(start, _delta);
+             graph = graph.replace(node.move(projection.invert(end)));

            }
            }

-         },
-         // Updates the currently highlighted sequence and selected bubble.
-         // Reset is only necessary when interacting with the viewport because
-         // this implicitly changes the currently selected bubble/sequence
-         setStyles: function setStyles(context, hovered, reset) {
-           if (reset) {
-             // reset all layers
-             context.container().selectAll('.viewfield-group').classed('highlighted', false).classed('hovered', false);
-             context.container().selectAll('.sequence').classed('highlighted', false).classed('currentView', false);
+
+           if (cache.intersections.length) {
+             graph = cleanupIntersections(graph);

            }
 
            }
 

-           var hoveredImageKey = hovered && hovered.key;
-           var hoveredSequenceKey = hoveredImageKey && this.getSequenceKeyForImageKey(hoveredImageKey);
-           var hoveredLineString = hoveredSequenceKey && _mlyCache.sequences.lineString[hoveredSequenceKey];
-           var hoveredImageKeys = hoveredLineString && hoveredLineString.properties.coordinateProperties.image_keys || [];
-           var selectedImageKey = _mlySelectedImageKey;
-           var selectedSequenceKey = selectedImageKey && this.getSequenceKeyForImageKey(selectedImageKey);
-           var selectedLineString = selectedSequenceKey && _mlyCache.sequences.lineString[selectedSequenceKey];
-           var selectedImageKeys = selectedLineString && selectedLineString.properties.coordinateProperties.image_keys || []; // highlight sibling viewfields on either the selected or the hovered sequences
+           return graph;
+         };

 
 

-           var highlightedImageKeys = utilArrayUnion(hoveredImageKeys, selectedImageKeys);
-           context.container().selectAll('.layer-mapillary .viewfield-group').classed('highlighted', function (d) {
-             return highlightedImageKeys.indexOf(d.key) !== -1;
-           }).classed('hovered', function (d) {
-             return d.key === hoveredImageKey;
-           });
-           context.container().selectAll('.layer-mapillary .sequence').classed('highlighted', function (d) {
-             return d.properties.key === hoveredSequenceKey;
-           }).classed('currentView', function (d) {
-             return d.properties.key === selectedSequenceKey;
-           }); // update viewfields if needed
+         action.delta = function () {
+           return _delta;
+         };

 
 

-           context.container().selectAll('.viewfield-group .viewfield').attr('d', viewfieldPath);
+         return action;
+       }

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;
+       function actionMoveMember(relationId, fromIndex, toIndex) {
+         return function (graph) {
+           return graph.replace(graph.entity(relationId).moveMember(fromIndex, toIndex));
+         };
+       }

 
 

-             if (d.pano && d.key !== selectedImageKey) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
-             } else {
-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
-             }
-           }
+       function actionMoveNode(nodeID, toLoc) {
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var node = graph.entity(nodeID);
+           return graph.replace(node.move(geoVecInterp(node.loc, toLoc, t)));
+         };

 
 

-           return this;
-         },
-         updateDetections: function updateDetections(imageKey, url) {
-           if (!_mlyViewer || _mlyFallback) return;
-           if (!imageKey) return;
+         action.transitionable = true;
+         return action;
+       }
+
+       function actionNoop() {
+         return function (graph) {
+           return graph;
+         };
+       }
+
+       function actionOrthogonalize(wayID, projection, vertexID, degThresh, ep) {
+         var epsilon = ep || 1e-4;
+         var threshold = degThresh || 13; // degrees within right or straight to alter
+         // We test normalized dot products so we can compare as cos(angle)
+
+         var lowerThreshold = Math.cos((90 - threshold) * Math.PI / 180);
+         var upperThreshold = Math.cos(threshold * Math.PI / 180);
+
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var way = graph.entity(wayID);
+           way = way.removeNode(''); // sanity check - remove any consecutive duplicates
+
+           if (way.tags.nonsquare) {
+             var tags = Object.assign({}, way.tags); // since we're squaring, remove indication that this is physically unsquare

 
 

-           if (!_mlyCache.image_detections.forImageKey[imageKey]) {
-             loadData('image_detections', url).then(function () {
-               showDetections(_mlyCache.image_detections.forImageKey[imageKey] || []);
+             delete tags.nonsquare;
+             way = way.update({
+               tags: tags

              });
              });

-           } else {
-             showDetections(_mlyCache.image_detections.forImageKey[imageKey]);

            }
 
            }
 

-           function showDetections(detections) {
-             detections.forEach(function (data) {
-               var tag = makeTag(data);
+           graph = graph.replace(way);
+           var isClosed = way.isClosed();
+           var nodes = graph.childNodes(way).slice(); // shallow copy

 
 

-               if (tag) {
-                 var tagComponent = _mlyViewer.getComponent('tag');
+           if (isClosed) nodes.pop();

 
 

-                 tagComponent.add([tag]);
-               }
+           if (vertexID !== undefined) {
+             nodes = nodeSubset(nodes, vertexID, isClosed);
+             if (nodes.length !== 3) return graph;
+           } // note: all geometry functions here use the unclosed node/point/coord list
+
+
+           var nodeCount = {};
+           var points = [];
+           var corner = {
+             i: 0,
+             dotp: 1
+           };
+           var node, point, loc, score, motions, i, j;
+
+           for (i = 0; i < nodes.length; i++) {
+             node = nodes[i];
+             nodeCount[node.id] = (nodeCount[node.id] || 0) + 1;
+             points.push({
+               id: node.id,
+               coord: projection(node.loc)

              });
            }
 
              });
            }
 

-           function makeTag(data) {
-             var valueParts = data.value.split('--');
-             if (!valueParts.length) return;
-             var tag;
-             var text;
-             var color = 0xffffff;
-
-             if (_mlyHighlightedDetection === data.key) {
-               color = 0xffff00;
-               text = valueParts[1];
+           if (points.length === 3) {
+             // move only one vertex for right triangle
+             for (i = 0; i < 1000; i++) {
+               motions = points.map(calcMotion);
+               points[corner.i].coord = geoVecAdd(points[corner.i].coord, motions[corner.i]);
+               score = corner.dotp;

 
 

-               if (text === 'flat' || text === 'discrete' || text === 'sign') {
-                 text = valueParts[2];
+               if (score < epsilon) {
+                 break;

                }
                }

-
-               text = text.replace(/-/g, ' ');
-               text = text.charAt(0).toUpperCase() + text.slice(1);
-               _mlyHighlightedDetection = null;

              }
 
              }
 

-             if (data.shape.type === 'Polygon') {
-               var polygonGeometry = new Mapillary.TagComponent.PolygonGeometry(data.shape.coordinates[0]);
-               tag = new Mapillary.TagComponent.OutlineTag(data.key, polygonGeometry, {
-                 text: text,
-                 textColor: color,
-                 lineColor: color,
-                 lineWidth: 2,
-                 fillColor: color,
-                 fillOpacity: 0.3
-               });
-             } else if (data.shape.type === 'Point') {
-               var pointGeometry = new Mapillary.TagComponent.PointGeometry(data.shape.coordinates[0]);
-               tag = new Mapillary.TagComponent.SpotTag(data.key, pointGeometry, {
-                 text: text,
-                 color: color,
-                 textColor: color
-               });
-             }
+             node = graph.entity(nodes[corner.i].id);
+             loc = projection.invert(points[corner.i].coord);
+             graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
+           } else {
+             var straights = [];
+             var simplified = []; // Remove points from nearly straight sections..
+             // This produces a simplified shape to orthogonalize

 
 

-             return tag;
-           }
-         },
-         cache: function cache() {
-           return _mlyCache;
-         }
-       };
+             for (i = 0; i < points.length; i++) {
+               point = points[i];
+               var dotp = 0;

 
 

-       function validationIssue(attrs) {
-         this.type = attrs.type; // required - name of rule that created the issue (e.g. 'missing_tag')
+               if (isClosed || i > 0 && i < points.length - 1) {
+                 var a = points[(i - 1 + points.length) % points.length];
+                 var b = points[(i + 1) % points.length];
+                 dotp = Math.abs(geoOrthoNormalizedDotProduct(a.coord, b.coord, point.coord));
+               }

 
 

-         this.subtype = attrs.subtype; // optional - category of the issue within the type (e.g. 'relation_type' under 'missing_tag')
+               if (dotp > upperThreshold) {
+                 straights.push(point);
+               } else {
+                 simplified.push(point);
+               }
+             } // Orthogonalize the simplified shape

 
 

-         this.severity = attrs.severity; // required - 'warning' or 'error'

 
 

-         this.message = attrs.message; // required - function returning localized string
+             var bestPoints = clonePoints(simplified);
+             var originalPoints = clonePoints(simplified);
+             score = Infinity;

 
 

-         this.reference = attrs.reference; // optional - function(selection) to render reference information
+             for (i = 0; i < 1000; i++) {
+               motions = simplified.map(calcMotion);

 
 

-         this.entityIds = attrs.entityIds; // optional - array of IDs of entities involved in the issue
+               for (j = 0; j < motions.length; j++) {
+                 simplified[j].coord = geoVecAdd(simplified[j].coord, motions[j]);
+               }

 
 

-         this.loc = attrs.loc; // optional - [lon, lat] to zoom in on to see the issue
+               var newScore = geoOrthoCalcScore(simplified, isClosed, epsilon, threshold);

 
 

-         this.data = attrs.data; // optional - object containing extra data for the fixes
+               if (newScore < score) {
+                 bestPoints = clonePoints(simplified);
+                 score = newScore;
+               }

 
 

-         this.dynamicFixes = attrs.dynamicFixes; // optional - function(context) returning fixes
+               if (score < epsilon) {
+                 break;
+               }
+             }

 
 

-         this.hash = attrs.hash; // optional - string to further differentiate the issue
+             var bestCoords = bestPoints.map(function (p) {
+               return p.coord;
+             });
+             if (isClosed) bestCoords.push(bestCoords[0]); // move the nodes that should move

 
 

-         this.id = generateID.apply(this); // generated - see below
+             for (i = 0; i < bestPoints.length; i++) {
+               point = bestPoints[i];

 
 

-         this.autoFix = null; // generated - if autofix exists, will be set below
-         // A unique, deterministic string hash.
-         // Issues with identical id values are considered identical.
+               if (!geoVecEqual(originalPoints[i].coord, point.coord)) {
+                 node = graph.entity(point.id);
+                 loc = projection.invert(point.coord);
+                 graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
+               }
+             } // move the nodes along straight segments

 
 

-         function generateID() {
-           var parts = [this.type];

 
 

-           if (this.hash) {
-             // subclasses can pass in their own differentiator
-             parts.push(this.hash);
-           }
+             for (i = 0; i < straights.length; i++) {
+               point = straights[i];
+               if (nodeCount[point.id] > 1) continue; // skip self-intersections

 
 

-           if (this.subtype) {
-             parts.push(this.subtype);
-           } // include the entities this issue is for
-           // (sort them so the id is deterministic)
+               node = graph.entity(point.id);

 
 

+               if (t === 1 && graph.parentWays(node).length === 1 && graph.parentRelations(node).length === 0 && !node.hasInterestingTags()) {
+                 // remove uninteresting points..
+                 graph = actionDeleteNode(node.id)(graph);
+               } else {
+                 // move interesting points to the nearest edge..
+                 var choice = geoVecProject(point.coord, bestCoords);

 
 

-           if (this.entityIds) {
-             var entityKeys = this.entityIds.slice().sort();
-             parts.push.apply(parts, entityKeys);
+                 if (choice) {
+                   loc = projection.invert(choice.target);
+                   graph = graph.replace(node.move(geoVecInterp(node.loc, loc, t)));
+                 }
+               }
+             }

            }
 
            }
 

-           return parts.join(':');
-         }
+           return graph;

 
 

-         this.extent = function (resolver) {
-           if (this.loc) {
-             return geoExtent(this.loc);
+           function clonePoints(array) {
+             return array.map(function (p) {
+               return {
+                 id: p.id,
+                 coord: [p.coord[0], p.coord[1]]
+               };
+             });

            }
 
            }
 

-           if (this.entityIds && this.entityIds.length) {
-             return this.entityIds.reduce(function (extent, entityId) {
-               return extent.extend(resolver.entity(entityId).extent(resolver));
-             }, geoExtent());
-           }
+           function calcMotion(point, i, array) {
+             // don't try to move the endpoints of a non-closed way.
+             if (!isClosed && (i === 0 || i === array.length - 1)) return [0, 0]; // don't try to move a node that appears more than once (self intersection)

 
 

-           return null;
-         };
+             if (nodeCount[array[i].id] > 1) return [0, 0];
+             var a = array[(i - 1 + array.length) % array.length].coord;
+             var origin = point.coord;
+             var b = array[(i + 1) % array.length].coord;
+             var p = geoVecSubtract(a, origin);
+             var q = geoVecSubtract(b, origin);
+             var scale = 2 * Math.min(geoVecLength(p), geoVecLength(q));
+             p = geoVecNormalize(p);
+             q = geoVecNormalize(q);
+             var dotp = p[0] * q[0] + p[1] * q[1];
+             var val = Math.abs(dotp);

 
 

-         this.fixes = function (context) {
-           var fixes = this.dynamicFixes ? this.dynamicFixes(context) : [];
-           var issue = this;
+             if (val < lowerThreshold) {
+               // nearly orthogonal
+               corner.i = i;
+               corner.dotp = val;
+               var vec = geoVecNormalize(geoVecAdd(p, q));
+               return geoVecScale(vec, 0.1 * dotp * scale);
+             }

 
 

-           if (issue.severity === 'warning') {
-             // allow ignoring any issue that's not an error
-             fixes.push(new validationIssueFix({
-               title: _t.html('issues.fix.ignore_issue.title'),
-               icon: 'iD-icon-close',
-               onClick: function onClick() {
-                 context.validator().ignoreIssue(this.issue.id);
-               }
-             }));
+             return [0, 0]; // do nothing

            }
            }

+         }; // if we are only orthogonalizing one vertex,
+         // get that vertex and the previous and next

 
 

-           fixes.forEach(function (fix) {
-             // the id doesn't matter as long as it's unique to this issue/fix
-             fix.id = fix.title; // add a reference to the issue for use in actions

 
 

-             fix.issue = issue;
+         function nodeSubset(nodes, vertexID, isClosed) {
+           var first = isClosed ? 0 : 1;
+           var last = isClosed ? nodes.length : nodes.length - 1;

 
 

-             if (fix.autoArgs) {
-               issue.autoFix = fix;
+           for (var i = first; i < last; i++) {
+             if (nodes[i].id === vertexID) {
+               return [nodes[(i - 1 + nodes.length) % nodes.length], nodes[i], nodes[(i + 1) % nodes.length]];

              }
              }

-           });
-           return fixes;
-         };
-       }
-       function validationIssueFix(attrs) {
-         this.title = attrs.title; // Required
+           }

 
 

-         this.onClick = attrs.onClick; // Optional - the function to run to apply the fix
+           return [];
+         }

 
 

-         this.disabledReason = attrs.disabledReason; // Optional - a string explaining why the fix is unavailable, if any
+         action.disabled = function (graph) {
+           var way = graph.entity(wayID);
+           way = way.removeNode(''); // sanity check - remove any consecutive duplicates

 
 

-         this.icon = attrs.icon; // Optional - shows 'iD-icon-wrench' if not set
+           graph = graph.replace(way);
+           var isClosed = way.isClosed();
+           var nodes = graph.childNodes(way).slice(); // shallow copy

 
 

-         this.entityIds = attrs.entityIds || []; // Optional - used for hover-higlighting.
+           if (isClosed) nodes.pop();
+           var allowStraightAngles = false;

 
 

-         this.autoArgs = attrs.autoArgs; // Optional - pass [actions, annotation] arglist if this fix can automatically run
+           if (vertexID !== undefined) {
+             allowStraightAngles = true;
+             nodes = nodeSubset(nodes, vertexID, isClosed);
+             if (nodes.length !== 3) return 'end_vertex';
+           }

 
 

-         this.issue = null; // Generated link - added by validationIssue
-       }
+           var coords = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var score = geoOrthoCanOrthogonalize(coords, isClosed, epsilon, threshold, allowStraightAngles);

 
 

-       var buildRuleChecks = function buildRuleChecks() {
-         return {
-           equals: function equals(_equals) {
-             return function (tags) {
-               return Object.keys(_equals).every(function (k) {
-                 return _equals[k] === tags[k];
-               });
-             };
-           },
-           notEquals: function notEquals(_notEquals) {
-             return function (tags) {
-               return Object.keys(_notEquals).some(function (k) {
-                 return _notEquals[k] !== tags[k];
-               });
-             };
-           },
-           absence: function absence(_absence) {
-             return function (tags) {
-               return Object.keys(tags).indexOf(_absence) === -1;
-             };
-           },
-           presence: function presence(_presence) {
-             return function (tags) {
-               return Object.keys(tags).indexOf(_presence) > -1;
-             };
-           },
-           greaterThan: function greaterThan(_greaterThan) {
-             var key = Object.keys(_greaterThan)[0];
-             var value = _greaterThan[key];
-             return function (tags) {
-               return tags[key] > value;
-             };
-           },
-           greaterThanEqual: function greaterThanEqual(_greaterThanEqual) {
-             var key = Object.keys(_greaterThanEqual)[0];
-             var value = _greaterThanEqual[key];
-             return function (tags) {
-               return tags[key] >= value;
-             };
-           },
-           lessThan: function lessThan(_lessThan) {
-             var key = Object.keys(_lessThan)[0];
-             var value = _lessThan[key];
-             return function (tags) {
-               return tags[key] < value;
-             };
-           },
-           lessThanEqual: function lessThanEqual(_lessThanEqual) {
-             var key = Object.keys(_lessThanEqual)[0];
-             var value = _lessThanEqual[key];
-             return function (tags) {
-               return tags[key] <= value;
-             };
-           },
-           positiveRegex: function positiveRegex(_positiveRegex) {
-             var tagKey = Object.keys(_positiveRegex)[0];
+           if (score === null) {
+             return 'not_squarish';
+           } else if (score === 0) {
+             return 'square_enough';
+           } else {
+             return false;
+           }
+         };

 
 

-             var expression = _positiveRegex[tagKey].join('|');
+         action.transitionable = true;
+         return action;
+       }

 
 

-             var regex = new RegExp(expression);
-             return function (tags) {
-               return regex.test(tags[tagKey]);
-             };
-           },
-           negativeRegex: function negativeRegex(_negativeRegex) {
-             var tagKey = Object.keys(_negativeRegex)[0];
+       //
+       // `turn` must be an `osmTurn` object
+       // see osm/intersection.js, pathToTurn()
+       //
+       // This specifies a restriction of type `restriction` when traveling from
+       // `turn.from.way` toward `turn.to.way` via `turn.via.node` OR `turn.via.ways`.
+       // (The action does not check that these entities form a valid intersection.)
+       //
+       // From, to, and via ways should be split before calling this action.
+       // (old versions of the code would split the ways here, but we no longer do it)
+       //
+       // For testing convenience, accepts a restrictionID to assign to the new
+       // relation. Normally, this will be undefined and the relation will
+       // automatically be assigned a new ID.
+       //

 
 

-             var expression = _negativeRegex[tagKey].join('|');
+       function actionRestrictTurn(turn, restrictionType, restrictionID) {
+         return function (graph) {
+           var fromWay = graph.entity(turn.from.way);
+           var toWay = graph.entity(turn.to.way);
+           var viaNode = turn.via.node && graph.entity(turn.via.node);
+           var viaWays = turn.via.ways && turn.via.ways.map(function (id) {
+             return graph.entity(id);
+           });
+           var members = [];
+           members.push({
+             id: fromWay.id,
+             type: 'way',
+             role: 'from'
+           });

 
 

-             var regex = new RegExp(expression);
-             return function (tags) {
-               return !regex.test(tags[tagKey]);
-             };
+           if (viaNode) {
+             members.push({
+               id: viaNode.id,
+               type: 'node',
+               role: 'via'
+             });
+           } else if (viaWays) {
+             viaWays.forEach(function (viaWay) {
+               members.push({
+                 id: viaWay.id,
+                 type: 'way',
+                 role: 'via'
+               });
+             });

            }
            }

-         };
-       };

 
 

-       var buildLineKeys = function buildLineKeys() {
-         return {
-           highway: {
-             rest_area: true,
-             services: true
-           },
-           railway: {
-             roundhouse: true,
-             station: true,
-             traverser: true,
-             turntable: true,
-             wash: true
-           }
+           members.push({
+             id: toWay.id,
+             type: 'way',
+             role: 'to'
+           });
+           return graph.replace(osmRelation({
+             id: restrictionID,
+             tags: {
+               type: 'restriction',
+               restriction: restrictionType
+             },
+             members: members
+           }));

          };
          };

-       };
-
-       var serviceMapRules = {
-         init: function init() {
-           this._ruleChecks = buildRuleChecks();
-           this._validationRules = [];
-           this._areaKeys = osmAreaKeys;
-           this._lineKeys = buildLineKeys();
-         },
-         // list of rules only relevant to tag checks...
-         filterRuleChecks: function filterRuleChecks(selector) {
-           var _ruleChecks = this._ruleChecks;
-           return Object.keys(selector).reduce(function (rules, key) {
-             if (['geometry', 'error', 'warning'].indexOf(key) === -1) {
-               rules.push(_ruleChecks[key](selector[key]));
-             }
-
-             return rules;
-           }, []);
-         },
-         // builds tagMap from mapcss-parse selector object...
-         buildTagMap: function buildTagMap(selector) {
-           var getRegexValues = function getRegexValues(regexes) {
-             return regexes.map(function (regex) {
-               return regex.replace(/\$|\^/g, '');
-             });
-           };
+       }

 
 

-           var tagMap = Object.keys(selector).reduce(function (expectedTags, key) {
-             var values;
-             var isRegex = /regex/gi.test(key);
-             var isEqual = /equals/gi.test(key);
+       function actionRevert(id) {
+         var action = function action(graph) {
+           var entity = graph.hasEntity(id),
+               base = graph.base().entities[id];

 
 

-             if (isRegex || isEqual) {
-               Object.keys(selector[key]).forEach(function (selectorKey) {
-                 values = isEqual ? [selector[key][selectorKey]] : getRegexValues(selector[key][selectorKey]);
+           if (entity && !base) {
+             // entity will be removed..
+             if (entity.type === 'node') {
+               graph.parentWays(entity).forEach(function (parent) {
+                 parent = parent.removeNode(id);
+                 graph = graph.replace(parent);

 
 

-                 if (expectedTags.hasOwnProperty(selectorKey)) {
-                   values = values.concat(expectedTags[selectorKey]);
+                 if (parent.isDegenerate()) {
+                   graph = actionDeleteWay(parent.id)(graph);

                  }
                  }

-
-                 expectedTags[selectorKey] = values;

                });
                });

-             } else if (/(greater|less)Than(Equal)?|presence/g.test(key)) {
-               var tagKey = /presence/.test(key) ? selector[key] : Object.keys(selector[key])[0];
-               values = [selector[key][tagKey]];
-
-               if (expectedTags.hasOwnProperty(tagKey)) {
-                 values = values.concat(expectedTags[tagKey]);
-               }
-
-               expectedTags[tagKey] = values;

              }
 
              }
 

-             return expectedTags;
-           }, {});
-           return tagMap;
-         },
-         // inspired by osmWay#isArea()
-         inferGeometry: function inferGeometry(tagMap) {
-           var _lineKeys = this._lineKeys;
-           var _areaKeys = this._areaKeys;
-
-           var keyValueDoesNotImplyArea = function keyValueDoesNotImplyArea(key) {
-             return utilArrayIntersection(tagMap[key], Object.keys(_areaKeys[key])).length > 0;
-           };
-
-           var keyValueImpliesLine = function keyValueImpliesLine(key) {
-             return utilArrayIntersection(tagMap[key], Object.keys(_lineKeys[key])).length > 0;
-           };
-
-           if (tagMap.hasOwnProperty('area')) {
-             if (tagMap.area.indexOf('yes') > -1) {
-               return 'area';
-             }
+             graph.parentRelations(entity).forEach(function (parent) {
+               parent = parent.removeMembersWithID(id);
+               graph = graph.replace(parent);

 
 

-             if (tagMap.area.indexOf('no') > -1) {
-               return 'line';
-             }
+               if (parent.isDegenerate()) {
+                 graph = actionDeleteRelation(parent.id)(graph);
+               }
+             });

            }
 
            }
 

-           for (var key in tagMap) {
-             if (key in _areaKeys && !keyValueDoesNotImplyArea(key)) {
-               return 'area';
-             }
+           return graph.revert(id);
+         };

 
 

-             if (key in _lineKeys && keyValueImpliesLine(key)) {
-               return 'area';
-             }
-           }
+         return action;
+       }

 
 

-           return 'line';
-         },
-         // adds from mapcss-parse selector check...
-         addRule: function addRule(selector) {
-           var rule = {
-             // checks relevant to mapcss-selector
-             checks: this.filterRuleChecks(selector),
-             // true if all conditions for a tag error are true..
-             matches: function matches(entity) {
-               return this.checks.every(function (check) {
-                 return check(entity.tags);
-               });
-             },
-             // borrowed from Way#isArea()
-             inferredGeometry: this.inferGeometry(this.buildTagMap(selector), this._areaKeys),
-             geometryMatches: function geometryMatches(entity, graph) {
-               if (entity.type === 'node' || entity.type === 'relation') {
-                 return selector.geometry === entity.type;
-               } else if (entity.type === 'way') {
-                 return this.inferredGeometry === entity.geometry(graph);
-               }
-             },
-             // when geometries match and tag matches are present, return a warning...
-             findIssues: function findIssues(entity, graph, issues) {
-               if (this.geometryMatches(entity, graph) && this.matches(entity)) {
-                 var severity = Object.keys(selector).indexOf('error') > -1 ? 'error' : 'warning';
-                 var _message = selector[severity];
-                 issues.push(new validationIssue({
-                   type: 'maprules',
-                   severity: severity,
-                   message: function message() {
-                     return _message;
-                   },
-                   entityIds: [entity.id]
-                 }));
-               }
-             }
-           };
+       function actionRotate(rotateIds, pivot, angle, projection) {
+         var action = function action(graph) {
+           return graph.update(function (graph) {
+             utilGetAllNodes(rotateIds, graph).forEach(function (node) {
+               var point = geoRotate([projection(node.loc)], angle, pivot)[0];
+               graph = graph.replace(node.move(projection.invert(point)));
+             });
+           });
+         };

 
 

-           this._validationRules.push(rule);
-         },
-         clearRules: function clearRules() {
-           this._validationRules = [];
-         },
-         // returns validationRules...
-         validationRules: function validationRules() {
-           return this._validationRules;
-         },
-         // returns ruleChecks
-         ruleChecks: function ruleChecks() {
-           return this._ruleChecks;
-         }
-       };
+         return action;
+       }

 
 

-       var apibase$1 = 'https://nominatim.openstreetmap.org/';
-       var _inflight = {};
+       function actionScale(ids, pivotLoc, scaleFactor, projection) {
+         return function (graph) {
+           return graph.update(function (graph) {
+             var point, radial;
+             utilGetAllNodes(ids, graph).forEach(function (node) {
+               point = projection(node.loc);
+               radial = [point[0] - pivotLoc[0], point[1] - pivotLoc[1]];
+               point = [pivotLoc[0] + scaleFactor * radial[0], pivotLoc[1] + scaleFactor * radial[1]];
+               graph = graph.replace(node.move(projection.invert(point)));
+             });
+           });
+         };
+       }

 
 

-       var _nominatimCache;
+       /* Align nodes along their common axis */

 
 

-       var serviceNominatim = {
-         init: function init() {
-           _inflight = {};
-           _nominatimCache = new RBush();
-         },
-         reset: function reset() {
-           Object.values(_inflight).forEach(function (controller) {
-             controller.abort();
-           });
-           _inflight = {};
-           _nominatimCache = new RBush();
-         },
-         countryCode: function countryCode(location, callback) {
-           this.reverse(location, function (err, result) {
-             if (err) {
-               return callback(err);
-             } else if (result.address) {
-               return callback(null, result.address.country_code);
-             } else {
-               return callback('Unable to geocode', null);
-             }
-           });
-         },
-         reverse: function reverse(loc, callback) {
-           var cached = _nominatimCache.search({
-             minX: loc[0],
-             minY: loc[1],
-             maxX: loc[0],
-             maxY: loc[1]
-           });
+       function actionStraightenNodes(nodeIDs, projection) {
+         function positionAlongWay(a, o, b) {
+           return geoVecDot(a, b, o) / geoVecDot(b, b, o);
+         } // returns the endpoints of the long axis of symmetry of the `points` bounding rect

 
 

-           if (cached.length > 0) {
-             if (callback) callback(null, cached[0].data);
-             return;
-           }

 
 

-           var params = {
-             zoom: 13,
-             format: 'json',
-             addressdetails: 1,
-             lat: loc[1],
-             lon: loc[0]
-           };
-           var url = apibase$1 + 'reverse?' + utilQsString(params);
-           if (_inflight[url]) return;
-           var controller = new AbortController();
-           _inflight[url] = controller;
-           d3_json(url, {
-             signal: controller.signal
-           }).then(function (result) {
-             delete _inflight[url];
+         function getEndpoints(points) {
+           var ssr = geoGetSmallestSurroundingRectangle(points); // Choose line pq = axis of symmetry.
+           // The shape's surrounding rectangle has 2 axes of symmetry.
+           // Snap points to the long axis

 
 

-             if (result && result.error) {
-               throw new Error(result.error);
-             }
+           var p1 = [(ssr.poly[0][0] + ssr.poly[1][0]) / 2, (ssr.poly[0][1] + ssr.poly[1][1]) / 2];
+           var q1 = [(ssr.poly[2][0] + ssr.poly[3][0]) / 2, (ssr.poly[2][1] + ssr.poly[3][1]) / 2];
+           var p2 = [(ssr.poly[3][0] + ssr.poly[4][0]) / 2, (ssr.poly[3][1] + ssr.poly[4][1]) / 2];
+           var q2 = [(ssr.poly[1][0] + ssr.poly[2][0]) / 2, (ssr.poly[1][1] + ssr.poly[2][1]) / 2];
+           var isLong = geoVecLength(p1, q1) > geoVecLength(p2, q2);

 
 

-             var extent = geoExtent(loc).padByMeters(200);
+           if (isLong) {
+             return [p1, q1];
+           }

 
 

-             _nominatimCache.insert(Object.assign(extent.bbox(), {
-               data: result
-             }));
+           return [p2, q2];
+         }

 
 

-             if (callback) callback(null, result);
-           })["catch"](function (err) {
-             delete _inflight[url];
-             if (err.name === 'AbortError') return;
-             if (callback) callback(err.message);
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var nodes = nodeIDs.map(function (id) {
+             return graph.entity(id);

            });
            });

-         },
-         search: function search(val, callback) {
-           var searchVal = encodeURIComponent(val);
-           var url = apibase$1 + 'search/' + searchVal + '?limit=10&format=json';
-           if (_inflight[url]) return;
-           var controller = new AbortController();
-           _inflight[url] = controller;
-           d3_json(url, {
-             signal: controller.signal
-           }).then(function (result) {
-             delete _inflight[url];
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var endpoints = getEndpoints(points);
+           var startPoint = endpoints[0];
+           var endPoint = endpoints[1]; // Move points onto the line connecting the endpoints

 
 

-             if (result && result.error) {
-               throw new Error(result.error);
-             }
+           for (var i = 0; i < points.length; i++) {
+             var node = nodes[i];
+             var point = points[i];
+             var u = positionAlongWay(point, startPoint, endPoint);
+             var point2 = geoVecInterp(startPoint, endPoint, u);
+             var loc2 = projection.invert(point2);
+             graph = graph.replace(node.move(geoVecInterp(node.loc, loc2, t)));
+           }

 
 

-             if (callback) callback(null, result);
-           })["catch"](function (err) {
-             delete _inflight[url];
-             if (err.name === 'AbortError') return;
-             if (callback) callback(err.message);
-           });
-         }
-       };
+           return graph;
+         };

 
 

-       var apibase$2 = 'https://openstreetcam.org';
-       var maxResults$1 = 1000;
-       var tileZoom$1 = 14;
-       var tiler$4 = utilTiler().zoomExtent([tileZoom$1, tileZoom$1]).skipNullIsland(true);
-       var dispatch$5 = dispatch('loadedImages');
-       var imgZoom = d3_zoom().extent([[0, 0], [320, 240]]).translateExtent([[0, 0], [320, 240]]).scaleExtent([1, 15]);
+         action.disabled = function (graph) {
+           var nodes = nodeIDs.map(function (id) {
+             return graph.entity(id);
+           });
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var endpoints = getEndpoints(points);
+           var startPoint = endpoints[0];
+           var endPoint = endpoints[1];
+           var maxDistance = 0;

 
 

-       var _oscCache;
+           for (var i = 0; i < points.length; i++) {
+             var point = points[i];
+             var u = positionAlongWay(point, startPoint, endPoint);
+             var p = geoVecInterp(startPoint, endPoint, u);
+             var dist = geoVecLength(p, point);

 
 

-       var _oscSelectedImage;
+             if (!isNaN(dist) && dist > maxDistance) {
+               maxDistance = dist;
+             }
+           }

 
 

-       var _loadViewerPromise$1;
+           if (maxDistance < 0.0001) {
+             return 'straight_enough';
+           }
+         };

 
 

-       function abortRequest$4(controller) {
-         controller.abort();
+         action.transitionable = true;
+         return action;

        }
 
        }
 

-       function maxPageAtZoom$1(z) {
-         if (z < 15) return 2;
-         if (z === 15) return 5;
-         if (z === 16) return 10;
-         if (z === 17) return 20;
-         if (z === 18) return 40;
-         if (z > 18) return 80;
-       }
+       /*
+        * Based on https://github.com/openstreetmap/potlatch2/net/systemeD/potlatch2/tools/Straighten.as
+        */

 
 

-       function loadTiles$1(which, url, projection) {
-         var currZoom = Math.floor(geoScaleToZoom(projection.scale()));
-         var tiles = tiler$4.getTiles(projection); // abort inflight requests that are no longer needed
+       function actionStraightenWay(selectedIDs, projection) {
+         function positionAlongWay(a, o, b) {
+           return geoVecDot(a, b, o) / geoVecDot(b, b, o);
+         } // Return all selected ways as a continuous, ordered array of nodes

 
 

-         var cache = _oscCache[which];
-         Object.keys(cache.inflight).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k.indexOf(tile.id + ',') === 0;
+
+         function allNodes(graph) {
+           var nodes = [];
+           var startNodes = [];
+           var endNodes = [];
+           var remainingWays = [];
+           var selectedWays = selectedIDs.filter(function (w) {
+             return graph.entity(w).type === 'way';
+           });
+           var selectedNodes = selectedIDs.filter(function (n) {
+             return graph.entity(n).type === 'node';

            });
 
            });
 

-           if (!wanted) {
-             abortRequest$4(cache.inflight[k]);
-             delete cache.inflight[k];
-           }
-         });
-         tiles.forEach(function (tile) {
-           loadNextTilePage$1(which, currZoom, url, tile);
-         });
-       }
+           for (var i = 0; i < selectedWays.length; i++) {
+             var way = graph.entity(selectedWays[i]);
+             nodes = way.nodes.slice(0);
+             remainingWays.push(nodes);
+             startNodes.push(nodes[0]);
+             endNodes.push(nodes[nodes.length - 1]);
+           } // Remove duplicate end/startNodes (duplicate nodes cannot be at the line end,
+           //   and need to be removed so currNode difference calculation below works)
+           // i.e. ["n-1", "n-1", "n-2"] => ["n-2"]

 
 

-       function loadNextTilePage$1(which, currZoom, url, tile) {
-         var cache = _oscCache[which];
-         var bbox = tile.extent.bbox();
-         var maxPages = maxPageAtZoom$1(currZoom);
-         var nextPage = cache.nextPage[tile.id] || 1;
-         var params = utilQsString({
-           ipp: maxResults$1,
-           page: nextPage,
-           // client_id: clientId,
-           bbTopLeft: [bbox.maxY, bbox.minX].join(','),
-           bbBottomRight: [bbox.minY, bbox.maxX].join(',')
-         }, true);
-         if (nextPage > maxPages) return;
-         var id = tile.id + ',' + String(nextPage);
-         if (cache.loaded[id] || cache.inflight[id]) return;
-         var controller = new AbortController();
-         cache.inflight[id] = controller;
-         var options = {
-           method: 'POST',
-           signal: controller.signal,
-           body: params,
-           headers: {
-             'Content-Type': 'application/x-www-form-urlencoded'
-           }
-         };
-         d3_json(url, options).then(function (data) {
-           cache.loaded[id] = true;
-           delete cache.inflight[id];

 
 

-           if (!data || !data.currentPageItems || !data.currentPageItems.length) {
-             throw new Error('No Data');
-           }
+           startNodes = startNodes.filter(function (n) {
+             return startNodes.indexOf(n) === startNodes.lastIndexOf(n);
+           });
+           endNodes = endNodes.filter(function (n) {
+             return endNodes.indexOf(n) === endNodes.lastIndexOf(n);
+           }); // Choose the initial endpoint to start from

 
 

-           var features = data.currentPageItems.map(function (item) {
-             var loc = [+item.lng, +item.lat];
-             var d;
+           var currNode = utilArrayDifference(startNodes, endNodes).concat(utilArrayDifference(endNodes, startNodes))[0];
+           var nextWay = [];
+           nodes = []; // Create nested function outside of loop to avoid "function in loop" lint error

 
 

-             if (which === 'images') {
-               d = {
-                 loc: loc,
-                 key: item.id,
-                 ca: +item.heading,
-                 captured_at: item.shot_date || item.date_added,
-                 captured_by: item.username,
-                 imagePath: item.lth_name,
-                 sequence_id: item.sequence_id,
-                 sequence_index: +item.sequence_index
-               }; // cache sequence info
+           var getNextWay = function getNextWay(currNode, remainingWays) {
+             return remainingWays.filter(function (way) {
+               return way[0] === currNode || way[way.length - 1] === currNode;
+             })[0];
+           }; // Add nodes to end of nodes array, until all ways are added

 
 

-               var seq = _oscCache.sequences[d.sequence_id];

 
 

-               if (!seq) {
-                 seq = {
-                   rotation: 0,
-                   images: []
-                 };
-                 _oscCache.sequences[d.sequence_id] = seq;
-               }
+           while (remainingWays.length) {
+             nextWay = getNextWay(currNode, remainingWays);
+             remainingWays = utilArrayDifference(remainingWays, [nextWay]);

 
 

-               seq.images[d.sequence_index] = d;
-               _oscCache.images.forImageKey[d.key] = d; // cache imageKey -> image
+             if (nextWay[0] !== currNode) {
+               nextWay.reverse();

              }
 
              }
 

-             return {
-               minX: loc[0],
-               minY: loc[1],
-               maxX: loc[0],
-               maxY: loc[1],
-               data: d
-             };
-           });
-           cache.rtree.load(features);
+             nodes = nodes.concat(nextWay);
+             currNode = nodes[nodes.length - 1];
+           } // If user selected 2 nodes to straighten between, then slice nodes array to those nodes

 
 

-           if (data.currentPageItems.length === maxResults$1) {
-             // more pages to load
-             cache.nextPage[tile.id] = nextPage + 1;
-             loadNextTilePage$1(which, currZoom, url, tile);
-           } else {
-             cache.nextPage[tile.id] = Infinity; // no more pages to load
-           }

 
 

-           if (which === 'images') {
-             dispatch$5.call('loadedImages');
+           if (selectedNodes.length === 2) {
+             var startNodeIdx = nodes.indexOf(selectedNodes[0]);
+             var endNodeIdx = nodes.indexOf(selectedNodes[1]);
+             var sortedStartEnd = [startNodeIdx, endNodeIdx];
+             sortedStartEnd.sort(function (a, b) {
+               return a - b;
+             });
+             nodes = nodes.slice(sortedStartEnd[0], sortedStartEnd[1] + 1);

            }
            }

-         })["catch"](function () {
-           cache.loaded[id] = true;
-           delete cache.inflight[id];
-         });
-       } // partition viewport into higher zoom tiles
-
-
-       function partitionViewport$1(projection) {
-         var z = geoScaleToZoom(projection.scale());
-         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5

 
 

-         var tiler = utilTiler().zoomExtent([z2, z2]);
-         return tiler.getTiles(projection).map(function (tile) {
-           return tile.extent;
-         });
-       } // no more than `limit` results per partition.
+           return nodes.map(function (n) {
+             return graph.entity(n);
+           });
+         }

 
 

+         function shouldKeepNode(node, graph) {
+           return graph.parentWays(node).length > 1 || graph.parentRelations(node).length || node.hasInterestingTags();
+         }

 
 

-       function searchLimited$1(limit, projection, rtree) {
-         limit = limit || 5;
-         return partitionViewport$1(projection).reduce(function (result, extent) {
-           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
-             return d.data;
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var nodes = allNodes(graph);
+           var points = nodes.map(function (n) {
+             return projection(n.loc);

            });
            });

-           return found.length ? result.concat(found) : result;
-         }, []);
-       }
+           var startPoint = points[0];
+           var endPoint = points[points.length - 1];
+           var toDelete = [];
+           var i;

 
 

-       var serviceOpenstreetcam = {
-         init: function init() {
-           if (!_oscCache) {
-             this.reset();
+           for (i = 1; i < points.length - 1; i++) {
+             var node = nodes[i];
+             var point = points[i];
+
+             if (t < 1 || shouldKeepNode(node, graph)) {
+               var u = positionAlongWay(point, startPoint, endPoint);
+               var p = geoVecInterp(startPoint, endPoint, u);
+               var loc2 = projection.invert(p);
+               graph = graph.replace(node.move(geoVecInterp(node.loc, loc2, t)));
+             } else {
+               // safe to delete
+               if (toDelete.indexOf(node) === -1) {
+                 toDelete.push(node);
+               }
+             }

            }
 
            }
 

-           this.event = utilRebind(this, dispatch$5, 'on');
-         },
-         reset: function reset() {
-           if (_oscCache) {
-             Object.values(_oscCache.images.inflight).forEach(abortRequest$4);
+           for (i = 0; i < toDelete.length; i++) {
+             graph = actionDeleteNode(toDelete[i].id)(graph);

            }
 
            }
 

-           _oscCache = {
-             images: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               rtree: new RBush(),
-               forImageKey: {}
-             },
-             sequences: {}
-           };
-           _oscSelectedImage = null;
-         },
-         images: function images(projection) {
-           var limit = 5;
-           return searchLimited$1(limit, projection, _oscCache.images.rtree);
-         },
-         sequences: function sequences(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           var sequenceKeys = {}; // all sequences for images in viewport
+           return graph;
+         };

 
 

-           _oscCache.images.rtree.search(bbox).forEach(function (d) {
-             sequenceKeys[d.data.sequence_id] = true;
-           }); // make linestrings from those sequences
+         action.disabled = function (graph) {
+           // check way isn't too bendy
+           var nodes = allNodes(graph);
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var startPoint = points[0];
+           var endPoint = points[points.length - 1];
+           var threshold = 0.2 * geoVecLength(startPoint, endPoint);
+           var i;

 
 

+           if (threshold === 0) {
+             return 'too_bendy';
+           }

 
 

-           var lineStrings = [];
-           Object.keys(sequenceKeys).forEach(function (sequenceKey) {
-             var seq = _oscCache.sequences[sequenceKey];
-             var images = seq && seq.images;
+           var maxDistance = 0;

 
 

-             if (images) {
-               lineStrings.push({
-                 type: 'LineString',
-                 coordinates: images.map(function (d) {
-                   return d.loc;
-                 }).filter(Boolean),
-                 properties: {
-                   captured_at: images[0] ? images[0].captured_at : null,
-                   captured_by: images[0] ? images[0].captured_by : null,
-                   key: sequenceKey
-                 }
-               });
-             }
-           });
-           return lineStrings;
-         },
-         cachedImage: function cachedImage(imageKey) {
-           return _oscCache.images.forImageKey[imageKey];
-         },
-         loadImages: function loadImages(projection) {
-           var url = apibase$2 + '/1.0/list/nearby-photos/';
-           loadTiles$1('images', url, projection);
-         },
-         ensureViewerLoaded: function ensureViewerLoaded(context) {
-           if (_loadViewerPromise$1) return _loadViewerPromise$1; // add osc-wrapper
+           for (i = 1; i < points.length - 1; i++) {
+             var point = points[i];
+             var u = positionAlongWay(point, startPoint, endPoint);
+             var p = geoVecInterp(startPoint, endPoint, u);
+             var dist = geoVecLength(p, point); // to bendy if point is off by 20% of total start/end distance in projected space

 
 

-           var wrap = context.container().select('.photoviewer').selectAll('.osc-wrapper').data([0]);
-           var that = this;
-           var wrapEnter = wrap.enter().append('div').attr('class', 'photo-wrapper osc-wrapper').classed('hide', true).call(imgZoom.on('zoom', zoomPan)).on('dblclick.zoom', null);
-           wrapEnter.append('div').attr('class', 'photo-attribution fillD');
-           var controlsEnter = wrapEnter.append('div').attr('class', 'photo-controls-wrap').append('div').attr('class', 'photo-controls');
-           controlsEnter.append('button').on('click.back', step(-1)).html('◄');
-           controlsEnter.append('button').on('click.rotate-ccw', rotate(-90)).html('⤿');
-           controlsEnter.append('button').on('click.rotate-cw', rotate(90)).html('⤾');
-           controlsEnter.append('button').on('click.forward', step(1)).html('►');
-           wrapEnter.append('div').attr('class', 'osc-image-wrap'); // Register viewer resize handler
+             if (isNaN(dist) || dist > threshold) {
+               return 'too_bendy';
+             } else if (dist > maxDistance) {
+               maxDistance = dist;
+             }
+           }

 
 

-           context.ui().photoviewer.on('resize.openstreetcam', function (dimensions) {
-             imgZoom = d3_zoom().extent([[0, 0], dimensions]).translateExtent([[0, 0], dimensions]).scaleExtent([1, 15]).on('zoom', zoomPan);
+           var keepingAllNodes = nodes.every(function (node, i) {
+             return i === 0 || i === nodes.length - 1 || shouldKeepNode(node, graph);

            });
 
            });
 

-           function zoomPan(d3_event) {
-             var t = d3_event.transform;
-             context.container().select('.photoviewer .osc-image-wrap').call(utilSetTransform, t.x, t.y, t.k);
+           if (maxDistance < 0.0001 && // Allow straightening even if already straight in order to remove extraneous nodes
+           keepingAllNodes) {
+             return 'straight_enough';

            }
            }

+         };

 
 

-           function rotate(deg) {
-             return function () {
-               if (!_oscSelectedImage) return;
-               var sequenceKey = _oscSelectedImage.sequence_id;
-               var sequence = _oscCache.sequences[sequenceKey];
-               if (!sequence) return;
-               var r = sequence.rotation || 0;
-               r += deg;
-               if (r > 180) r -= 360;
-               if (r < -180) r += 360;
-               sequence.rotation = r;
-               var wrap = context.container().select('.photoviewer .osc-wrapper');
-               wrap.transition().duration(100).call(imgZoom.transform, identity$2);
-               wrap.selectAll('.osc-image').transition().duration(100).style('transform', 'rotate(' + r + 'deg)');
-             };
-           }
+         action.transitionable = true;
+         return action;
+       }

 
 

-           function step(stepBy) {
-             return function () {
-               if (!_oscSelectedImage) return;
-               var sequenceKey = _oscSelectedImage.sequence_id;
-               var sequence = _oscCache.sequences[sequenceKey];
-               if (!sequence) return;
-               var nextIndex = _oscSelectedImage.sequence_index + stepBy;
-               var nextImage = sequence.images[nextIndex];
-               if (!nextImage) return;
-               context.map().centerEase(nextImage.loc);
-               that.selectImage(context, nextImage.key);
-             };
-           } // don't need any async loading so resolve immediately
+       //
+       // `turn` must be an `osmTurn` object with a `restrictionID` property.
+       // see osm/intersection.js, pathToTurn()
+       //

 
 

+       function actionUnrestrictTurn(turn) {
+         return function (graph) {
+           return actionDeleteRelation(turn.restrictionID)(graph);
+         };
+       }

 
 

-           _loadViewerPromise$1 = Promise.resolve();
-           return _loadViewerPromise$1;
-         },
-         showViewer: function showViewer(context) {
-           var viewer = context.container().select('.photoviewer').classed('hide', false);
-           var isHidden = viewer.selectAll('.photo-wrapper.osc-wrapper.hide').size();
+       /* Reflect the given area around its axis of symmetry */

 
 

-           if (isHidden) {
-             viewer.selectAll('.photo-wrapper:not(.osc-wrapper)').classed('hide', true);
-             viewer.selectAll('.photo-wrapper.osc-wrapper').classed('hide', false);
-           }
+       function actionReflect(reflectIds, projection) {
+         var _useLongAxis = true;

 
 

-           return this;
-         },
-         hideViewer: function hideViewer(context) {
-           _oscSelectedImage = null;
-           this.updateUrlImage(null);
-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(null);
-           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
-           context.container().selectAll('.viewfield-group, .sequence, .icon-sign').classed('currentView', false);
-           return this.setStyles(context, null, true);
-         },
-         selectImage: function selectImage(context, imageKey) {
-           var d = this.cachedImage(imageKey);
-           _oscSelectedImage = d;
-           this.updateUrlImage(imageKey);
-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(d);
-           this.setStyles(context, null, true);
-           context.container().selectAll('.icon-sign').classed('currentView', false);
-           if (!d) return this;
-           var wrap = context.container().select('.photoviewer .osc-wrapper');
-           var imageWrap = wrap.selectAll('.osc-image-wrap');
-           var attribution = wrap.selectAll('.photo-attribution').html('');
-           wrap.transition().duration(100).call(imgZoom.transform, identity$2);
-           imageWrap.selectAll('.osc-image').remove();
+         var action = function action(graph, t) {
+           if (t === null || !isFinite(t)) t = 1;
+           t = Math.min(Math.max(+t, 0), 1);
+           var nodes = utilGetAllNodes(reflectIds, graph);
+           var points = nodes.map(function (n) {
+             return projection(n.loc);
+           });
+           var ssr = geoGetSmallestSurroundingRectangle(points); // Choose line pq = axis of symmetry.
+           // The shape's surrounding rectangle has 2 axes of symmetry.
+           // Reflect across the longer axis by default.

 
 

-           if (d) {
-             var sequence = _oscCache.sequences[d.sequence_id];
-             var r = sequence && sequence.rotation || 0;
-             imageWrap.append('img').attr('class', 'osc-image').attr('src', apibase$2 + '/' + d.imagePath).style('transform', 'rotate(' + r + 'deg)');
+           var p1 = [(ssr.poly[0][0] + ssr.poly[1][0]) / 2, (ssr.poly[0][1] + ssr.poly[1][1]) / 2];
+           var q1 = [(ssr.poly[2][0] + ssr.poly[3][0]) / 2, (ssr.poly[2][1] + ssr.poly[3][1]) / 2];
+           var p2 = [(ssr.poly[3][0] + ssr.poly[4][0]) / 2, (ssr.poly[3][1] + ssr.poly[4][1]) / 2];
+           var q2 = [(ssr.poly[1][0] + ssr.poly[2][0]) / 2, (ssr.poly[1][1] + ssr.poly[2][1]) / 2];
+           var p, q;
+           var isLong = geoVecLength(p1, q1) > geoVecLength(p2, q2);

 
 

-             if (d.captured_by) {
-               attribution.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://openstreetcam.org/user/' + encodeURIComponent(d.captured_by)).html('@' + d.captured_by);
-               attribution.append('span').html('|');
-             }
+           if (_useLongAxis && isLong || !_useLongAxis && !isLong) {
+             p = p1;
+             q = q1;
+           } else {
+             p = p2;
+             q = q2;
+           } // reflect c across pq
+           // http://math.stackexchange.com/questions/65503/point-reflection-over-a-line

 
 

-             if (d.captured_at) {
-               attribution.append('span').attr('class', 'captured_at').html(localeDateString(d.captured_at));
-               attribution.append('span').html('|');
-             }

 
 

-             attribution.append('a').attr('class', 'image-link').attr('target', '_blank').attr('href', 'https://openstreetcam.org/details/' + d.sequence_id + '/' + d.sequence_index).html('openstreetcam.org');
+           var dx = q[0] - p[0];
+           var dy = q[1] - p[1];
+           var a = (dx * dx - dy * dy) / (dx * dx + dy * dy);
+           var b = 2 * dx * dy / (dx * dx + dy * dy);
+
+           for (var i = 0; i < nodes.length; i++) {
+             var node = nodes[i];
+             var c = projection(node.loc);
+             var c2 = [a * (c[0] - p[0]) + b * (c[1] - p[1]) + p[0], b * (c[0] - p[0]) - a * (c[1] - p[1]) + p[1]];
+             var loc2 = projection.invert(c2);
+             node = node.move(geoVecInterp(node.loc, loc2, t));
+             graph = graph.replace(node);

            }
 
            }
 

-           return this;
+           return graph;
+         };

 
 

-           function localeDateString(s) {
-             if (!s) return null;
-             var options = {
-               day: 'numeric',
-               month: 'short',
-               year: 'numeric'
-             };
-             var d = new Date(s);
-             if (isNaN(d.getTime())) return null;
-             return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
-           }
-         },
-         getSelectedImage: function getSelectedImage() {
-           return _oscSelectedImage;
-         },
-         getSequenceKeyForImage: function getSequenceKeyForImage(d) {
-           return d && d.sequence_id;
-         },
-         // Updates the currently highlighted sequence and selected bubble.
-         // Reset is only necessary when interacting with the viewport because
-         // this implicitly changes the currently selected bubble/sequence
-         setStyles: function setStyles(context, hovered, reset) {
-           if (reset) {
-             // reset all layers
-             context.container().selectAll('.viewfield-group').classed('highlighted', false).classed('hovered', false).classed('currentView', false);
-             context.container().selectAll('.sequence').classed('highlighted', false).classed('currentView', false);
-           }
+         action.useLongAxis = function (val) {
+           if (!arguments.length) return _useLongAxis;
+           _useLongAxis = val;
+           return action;
+         };

 
 

-           var hoveredImageKey = hovered && hovered.key;
-           var hoveredSequenceKey = this.getSequenceKeyForImage(hovered);
-           var hoveredSequence = hoveredSequenceKey && _oscCache.sequences[hoveredSequenceKey];
-           var hoveredImageKeys = hoveredSequence && hoveredSequence.images.map(function (d) {
-             return d.key;
-           }) || [];
-           var viewer = context.container().select('.photoviewer');
-           var selected = viewer.empty() ? undefined : viewer.datum();
-           var selectedImageKey = selected && selected.key;
-           var selectedSequenceKey = this.getSequenceKeyForImage(selected);
-           var selectedSequence = selectedSequenceKey && _oscCache.sequences[selectedSequenceKey];
-           var selectedImageKeys = selectedSequence && selectedSequence.images.map(function (d) {
-             return d.key;
-           }) || []; // highlight sibling viewfields on either the selected or the hovered sequences
+         action.transitionable = true;
+         return action;
+       }

 
 

-           var highlightedImageKeys = utilArrayUnion(hoveredImageKeys, selectedImageKeys);
-           context.container().selectAll('.layer-openstreetcam .viewfield-group').classed('highlighted', function (d) {
-             return highlightedImageKeys.indexOf(d.key) !== -1;
-           }).classed('hovered', function (d) {
-             return d.key === hoveredImageKey;
-           }).classed('currentView', function (d) {
-             return d.key === selectedImageKey;
-           });
-           context.container().selectAll('.layer-openstreetcam .sequence').classed('highlighted', function (d) {
-             return d.properties.key === hoveredSequenceKey;
-           }).classed('currentView', function (d) {
-             return d.properties.key === selectedSequenceKey;
-           }); // update viewfields if needed
+       function actionUpgradeTags(entityId, oldTags, replaceTags) {
+         return function (graph) {
+           var entity = graph.entity(entityId);
+           var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-           context.container().selectAll('.viewfield-group .viewfield').attr('d', viewfieldPath);
+           var transferValue;
+           var semiIndex;

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;
+           for (var oldTagKey in oldTags) {
+             if (!(oldTagKey in tags)) continue; // wildcard match

 
 

-             if (d.pano && d.key !== selectedImageKey) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
+             if (oldTags[oldTagKey] === '*') {
+               // note the value since we might need to transfer it
+               transferValue = tags[oldTagKey];
+               delete tags[oldTagKey]; // exact match
+             } else if (oldTags[oldTagKey] === tags[oldTagKey]) {
+               delete tags[oldTagKey]; // match is within semicolon-delimited values

              } else {
              } else {

-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
+               var vals = tags[oldTagKey].split(';').filter(Boolean);
+               var oldIndex = vals.indexOf(oldTags[oldTagKey]);
+
+               if (vals.length === 1 || oldIndex === -1) {
+                 delete tags[oldTagKey];
+               } else {
+                 if (replaceTags && replaceTags[oldTagKey]) {
+                   // replacing a value within a semicolon-delimited value, note the index
+                   semiIndex = oldIndex;
+                 }
+
+                 vals.splice(oldIndex, 1);
+                 tags[oldTagKey] = vals.join(';');
+               }

              }
            }
 
              }
            }
 

-           return this;
-         },
-         updateUrlImage: function updateUrlImage(imageKey) {
-           if (!window.mocha) {
-             var hash = utilStringQs(window.location.hash);
+           if (replaceTags) {
+             for (var replaceKey in replaceTags) {
+               var replaceValue = replaceTags[replaceKey];

 
 

-             if (imageKey) {
-               hash.photo = 'openstreetcam/' + imageKey;
-             } else {
-               delete hash.photo;
-             }
+               if (replaceValue === '*') {
+                 if (tags[replaceKey] && tags[replaceKey] !== 'no') {
+                   // allow any pre-existing value except `no` (troll tag)
+                   continue;
+                 } else {
+                   // otherwise assume `yes` is okay
+                   tags[replaceKey] = 'yes';
+                 }
+               } else if (replaceValue === '$1') {
+                 tags[replaceKey] = transferValue;
+               } else {
+                 if (tags[replaceKey] && oldTags[replaceKey] && semiIndex !== undefined) {
+                   // don't override preexisting values
+                   var existingVals = tags[replaceKey].split(';').filter(Boolean);

 
 

-             window.location.replace('#' + utilQsString(hash, true));
+                   if (existingVals.indexOf(replaceValue) === -1) {
+                     existingVals.splice(semiIndex, 0, replaceValue);
+                     tags[replaceKey] = existingVals.join(';');
+                   }
+                 } else {
+                   tags[replaceKey] = replaceValue;
+                 }
+               }
+             }

            }
            }

-         },
-         cache: function cache() {
-           return _oscCache;
-         }
-       };
-
-       var FORCED$f = fails(function () {
-         return new Date(NaN).toJSON() !== null
-           || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;
-       });

 
 

-       // `Date.prototype.toJSON` method
-       // https://tc39.github.io/ecma262/#sec-date.prototype.tojson
-       _export({ target: 'Date', proto: true, forced: FORCED$f }, {
-         // eslint-disable-next-line no-unused-vars
-         toJSON: function toJSON(key) {
-           var O = toObject(this);
-           var pv = toPrimitive(O);
-           return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
-         }
-       });
+           return graph.replace(entity.update({
+             tags: tags
+           }));
+         };
+       }

 
 

-       // `URL.prototype.toJSON` method
-       // https://url.spec.whatwg.org/#dom-url-tojson
-       _export({ target: 'URL', proto: true, enumerable: true }, {
-         toJSON: function toJSON() {
-           return URL.prototype.toString.call(this);
+       function behaviorEdit(context) {
+         function behavior() {
+           context.map().minzoom(context.minEditableZoom());

          }
          }

-       });

 
 

-       /**
-        * Checks if `value` is the
-        * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
-        * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
-        *
-        * @static
-        * @memberOf _
-        * @since 0.1.0
-        * @category Lang
-        * @param {*} value The value to check.
-        * @returns {boolean} Returns `true` if `value` is an object, else `false`.
-        * @example
-        *
-        * _.isObject({});
-        * // => true
-        *
-        * _.isObject([1, 2, 3]);
-        * // => true
-        *
-        * _.isObject(_.noop);
-        * // => true
-        *
-        * _.isObject(null);
-        * // => false
-        */
-       function isObject$1(value) {
-         var type = _typeof(value);
+         behavior.off = function () {
+           context.map().minzoom(0);
+         };

 
 

-         return value != null && (type == 'object' || type == 'function');
+         return behavior;

        }
 
        }
 

-       /** Detect free variable `global` from Node.js. */
-       var freeGlobal = (typeof global === "undefined" ? "undefined" : _typeof(global)) == 'object' && global && global.Object === Object && global;
+       /*
+          The hover behavior adds the `.hover` class on pointerover to all elements to which
+          the identical datum is bound, and removes it on pointerout.

 
 

-       /** Detect free variable `self`. */
+          The :hover pseudo-class is insufficient for iD's purposes because a datum's visual
+          representation may consist of several elements scattered throughout the DOM hierarchy.
+          Only one of these elements can have the :hover pseudo-class, but all of them will
+          have the .hover class.
+        */

 
 

-       var freeSelf = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' && self && self.Object === Object && self;
-       /** Used as a reference to the global object. */
+       function behaviorHover(context) {
+         var dispatch = dispatch$8('hover');

 
 

-       var root$1 = freeGlobal || freeSelf || Function('return this')();
+         var _selection = select(null);

 
 

-       /**
-        * Gets the timestamp of the number of milliseconds that have elapsed since
-        * the Unix epoch (1 January 1970 00:00:00 UTC).
-        *
-        * @static
-        * @memberOf _
-        * @since 2.4.0
-        * @category Date
-        * @returns {number} Returns the timestamp.
-        * @example
-        *
-        * _.defer(function(stamp) {
-        *   console.log(_.now() - stamp);
-        * }, _.now());
-        * // => Logs the number of milliseconds it took for the deferred invocation.
-        */
+         var _newNodeId = null;
+         var _initialNodeID = null;

 
 

-       var now$1 = function now() {
-         return root$1.Date.now();
-       };
+         var _altDisables;

 
 

-       /** Built-in value references. */
+         var _ignoreVertex;

 
 

-       var _Symbol = root$1.Symbol;
+         var _targets = []; // use pointer events on supported platforms; fallback to mouse events

 
 

-       /** Used for built-in method references. */
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-       var objectProto = Object.prototype;
-       /** Used to check objects for own properties. */
+         function keydown(d3_event) {
+           if (_altDisables && d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             _selection.selectAll('.hover').classed('hover-suppressed', true).classed('hover', false);

 
 

-       var hasOwnProperty$1 = objectProto.hasOwnProperty;
-       /**
-        * Used to resolve the
-        * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
-        * of values.
-        */
+             _selection.classed('hover-disabled', true);

 
 

-       var nativeObjectToString = objectProto.toString;
-       /** Built-in value references. */
+             dispatch.call('hover', this, null);
+           }
+         }

 
 

-       var symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;
-       /**
-        * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
-        *
-        * @private
-        * @param {*} value The value to query.
-        * @returns {string} Returns the raw `toStringTag`.
-        */
+         function keyup(d3_event) {
+           if (_altDisables && d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             _selection.selectAll('.hover-suppressed').classed('hover-suppressed', false).classed('hover', true);

 
 

-       function getRawTag(value) {
-         var isOwn = hasOwnProperty$1.call(value, symToStringTag),
-             tag = value[symToStringTag];
+             _selection.classed('hover-disabled', false);

 
 

-         try {
-           value[symToStringTag] = undefined;
-           var unmasked = true;
-         } catch (e) {}
+             dispatch.call('hover', this, _targets);
+           }
+         }

 
 

-         var result = nativeObjectToString.call(value);
+         function behavior(selection) {
+           _selection = selection;
+           _targets = [];

 
 

-         if (unmasked) {
-           if (isOwn) {
-             value[symToStringTag] = tag;
+           if (_initialNodeID) {
+             _newNodeId = _initialNodeID;
+             _initialNodeID = null;

            } else {
            } else {

-             delete value[symToStringTag];
+             _newNodeId = null;

            }
            }

-         }

 
 

-         return result;
-       }
+           _selection.on(_pointerPrefix + 'over.hover', pointerover).on(_pointerPrefix + 'out.hover', pointerout) // treat pointerdown as pointerover for touch devices
+           .on(_pointerPrefix + 'down.hover', pointerover);

 
 

-       /** Used for built-in method references. */
-       var objectProto$1 = Object.prototype;
-       /**
-        * Used to resolve the
-        * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
-        * of values.
-        */
+           select(window).on(_pointerPrefix + 'up.hover pointercancel.hover', pointerout, true).on('keydown.hover', keydown).on('keyup.hover', keyup);

 
 

-       var nativeObjectToString$1 = objectProto$1.toString;
-       /**
-        * Converts `value` to a string using `Object.prototype.toString`.
-        *
-        * @private
-        * @param {*} value The value to convert.
-        * @returns {string} Returns the converted string.
-        */
+           function eventTarget(d3_event) {
+             var datum = d3_event.target && d3_event.target.__data__;
+             if (_typeof(datum) !== 'object') return null;

 
 

-       function objectToString$1(value) {
-         return nativeObjectToString$1.call(value);
-       }
+             if (!(datum instanceof osmEntity) && datum.properties && datum.properties.entity instanceof osmEntity) {
+               return datum.properties.entity;
+             }

 
 

-       /** `Object#toString` result references. */
+             return datum;
+           }

 
 

-       var nullTag = '[object Null]',
-           undefinedTag = '[object Undefined]';
-       /** Built-in value references. */
+           function pointerover(d3_event) {
+             // ignore mouse hovers with buttons pressed unless dragging
+             if (context.mode().id.indexOf('drag') === -1 && (!d3_event.pointerType || d3_event.pointerType === 'mouse') && d3_event.buttons) return;
+             var target = eventTarget(d3_event);

 
 

-       var symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;
-       /**
-        * The base implementation of `getTag` without fallbacks for buggy environments.
-        *
-        * @private
-        * @param {*} value The value to query.
-        * @returns {string} Returns the `toStringTag`.
-        */
+             if (target && _targets.indexOf(target) === -1) {
+               _targets.push(target);

 
 

-       function baseGetTag(value) {
-         if (value == null) {
-           return value === undefined ? undefinedTag : nullTag;
-         }
+               updateHover(d3_event, _targets);
+             }
+           }

 
 

-         return symToStringTag$1 && symToStringTag$1 in Object(value) ? getRawTag(value) : objectToString$1(value);
-       }
+           function pointerout(d3_event) {
+             var target = eventTarget(d3_event);

 
 

-       /**
-        * Checks if `value` is object-like. A value is object-like if it's not `null`
-        * and has a `typeof` result of "object".
-        *
-        * @static
-        * @memberOf _
-        * @since 4.0.0
-        * @category Lang
-        * @param {*} value The value to check.
-        * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
-        * @example
-        *
-        * _.isObjectLike({});
-        * // => true
-        *
-        * _.isObjectLike([1, 2, 3]);
-        * // => true
-        *
-        * _.isObjectLike(_.noop);
-        * // => false
-        *
-        * _.isObjectLike(null);
-        * // => false
-        */
-       function isObjectLike(value) {
-         return value != null && _typeof(value) == 'object';
-       }
+             var index = _targets.indexOf(target);

 
 

-       /** `Object#toString` result references. */
+             if (index !== -1) {
+               _targets.splice(index);

 
 

-       var symbolTag = '[object Symbol]';
-       /**
-        * Checks if `value` is classified as a `Symbol` primitive or object.
-        *
-        * @static
-        * @memberOf _
-        * @since 4.0.0
-        * @category Lang
-        * @param {*} value The value to check.
-        * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
-        * @example
-        *
-        * _.isSymbol(Symbol.iterator);
-        * // => true
-        *
-        * _.isSymbol('abc');
-        * // => false
-        */
+               updateHover(d3_event, _targets);
+             }
+           }

 
 

-       function isSymbol$1(value) {
-         return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
-       }
+           function allowsVertex(d) {
+             return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
+           }

 
 

-       /** Used as references for various `Number` constants. */
+           function modeAllowsHover(target) {
+             var mode = context.mode();

 
 

-       var NAN = 0 / 0;
-       /** Used to match leading and trailing whitespace. */
+             if (mode.id === 'add-point') {
+               return mode.preset.matchGeometry('vertex') || target.type !== 'way' && target.geometry(context.graph()) !== 'vertex';
+             }

 
 

-       var reTrim = /^\s+|\s+$/g;
-       /** Used to detect bad signed hexadecimal string values. */
+             return true;
+           }

 
 

-       var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
-       /** Used to detect binary string values. */
+           function updateHover(d3_event, targets) {
+             _selection.selectAll('.hover').classed('hover', false);

 
 

-       var reIsBinary = /^0b[01]+$/i;
-       /** Used to detect octal string values. */
+             _selection.selectAll('.hover-suppressed').classed('hover-suppressed', false);

 
 

-       var reIsOctal = /^0o[0-7]+$/i;
-       /** Built-in method references without a dependency on `root`. */
+             var mode = context.mode();

 
 

-       var freeParseInt = parseInt;
-       /**
-        * Converts `value` to a number.
-        *
-        * @static
-        * @memberOf _
-        * @since 4.0.0
-        * @category Lang
-        * @param {*} value The value to process.
-        * @returns {number} Returns the number.
-        * @example
-        *
-        * _.toNumber(3.2);
-        * // => 3.2
-        *
-        * _.toNumber(Number.MIN_VALUE);
-        * // => 5e-324
-        *
-        * _.toNumber(Infinity);
-        * // => Infinity
-        *
-        * _.toNumber('3.2');
-        * // => 3.2
-        */
+             if (!_newNodeId && (mode.id === 'draw-line' || mode.id === 'draw-area')) {
+               var node = targets.find(function (target) {
+                 return target instanceof osmEntity && target.type === 'node';
+               });
+               _newNodeId = node && node.id;
+             }
+
+             targets = targets.filter(function (datum) {
+               if (datum instanceof osmEntity) {
+                 // If drawing a way, don't hover on a node that was just placed. #3974
+                 return datum.id !== _newNodeId && (datum.type !== 'node' || !_ignoreVertex || allowsVertex(datum)) && modeAllowsHover(datum);
+               }
+
+               return true;
+             });
+             var selector = '';
+
+             for (var i in targets) {
+               var datum = targets[i]; // What are we hovering over?
+
+               if (datum.__featurehash__) {
+                 // hovering custom data
+                 selector += ', .data' + datum.__featurehash__;
+               } else if (datum instanceof QAItem) {
+                 selector += ', .' + datum.service + '.itemId-' + datum.id;
+               } else if (datum instanceof osmNote) {
+                 selector += ', .note-' + datum.id;
+               } else if (datum instanceof osmEntity) {
+                 selector += ', .' + datum.id;
+
+                 if (datum.type === 'relation') {
+                   for (var j in datum.members) {
+                     selector += ', .' + datum.members[j].id;
+                   }
+                 }
+               }
+             }
+
+             var suppressed = _altDisables && d3_event && d3_event.altKey;

 
 

-       function toNumber$1(value) {
-         if (typeof value == 'number') {
-           return value;
-         }
+             if (selector.trim().length) {
+               // remove the first comma
+               selector = selector.slice(1);

 
 

-         if (isSymbol$1(value)) {
-           return NAN;
-         }
+               _selection.selectAll(selector).classed(suppressed ? 'hover-suppressed' : 'hover', true);
+             }

 
 

-         if (isObject$1(value)) {
-           var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
-           value = isObject$1(other) ? other + '' : other;
+             dispatch.call('hover', this, !suppressed && targets);
+           }

          }
 
          }
 

-         if (typeof value != 'string') {
-           return value === 0 ? value : +value;
-         }
+         behavior.off = function (selection) {
+           selection.selectAll('.hover').classed('hover', false);
+           selection.selectAll('.hover-suppressed').classed('hover-suppressed', false);
+           selection.classed('hover-disabled', false);
+           selection.on(_pointerPrefix + 'over.hover', null).on(_pointerPrefix + 'out.hover', null).on(_pointerPrefix + 'down.hover', null);
+           select(window).on(_pointerPrefix + 'up.hover pointercancel.hover', null, true).on('keydown.hover', null).on('keyup.hover', null);
+         };

 
 

-         value = value.replace(reTrim, '');
-         var isBinary = reIsBinary.test(value);
-         return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN : +value;
+         behavior.altDisables = function (val) {
+           if (!arguments.length) return _altDisables;
+           _altDisables = val;
+           return behavior;
+         };
+
+         behavior.ignoreVertex = function (val) {
+           if (!arguments.length) return _ignoreVertex;
+           _ignoreVertex = val;
+           return behavior;
+         };
+
+         behavior.initialNodeID = function (nodeId) {
+           _initialNodeID = nodeId;
+           return behavior;
+         };
+
+         return utilRebind(behavior, dispatch, 'on');

        }
 
        }
 

-       /** Error message constants. */
+       var _disableSpace = false;
+       var _lastSpace = null;
+       function behaviorDraw(context) {
+         var dispatch = dispatch$8('move', 'down', 'downcancel', 'click', 'clickWay', 'clickNode', 'undo', 'cancel', 'finish');
+         var keybinding = utilKeybinding('draw');

 
 

-       var FUNC_ERROR_TEXT = 'Expected a function';
-       /* Built-in method references for those with the same name as other `lodash` methods. */
+         var _hover = behaviorHover(context).altDisables(true).ignoreVertex(true).on('hover', context.ui().sidebar.hover);

 
 

-       var nativeMax = Math.max,
-           nativeMin = Math.min;
-       /**
-        * Creates a debounced function that delays invoking `func` until after `wait`
-        * milliseconds have elapsed since the last time the debounced function was
-        * invoked. The debounced function comes with a `cancel` method to cancel
-        * delayed `func` invocations and a `flush` method to immediately invoke them.
-        * Provide `options` to indicate whether `func` should be invoked on the
-        * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
-        * with the last arguments provided to the debounced function. Subsequent
-        * calls to the debounced function return the result of the last `func`
-        * invocation.
-        *
-        * **Note:** If `leading` and `trailing` options are `true`, `func` is
-        * invoked on the trailing edge of the timeout only if the debounced function
-        * is invoked more than once during the `wait` timeout.
-        *
-        * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
-        * until to the next tick, similar to `setTimeout` with a timeout of `0`.
-        *
-        * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
-        * for details over the differences between `_.debounce` and `_.throttle`.
-        *
-        * @static
-        * @memberOf _
-        * @since 0.1.0
-        * @category Function
-        * @param {Function} func The function to debounce.
-        * @param {number} [wait=0] The number of milliseconds to delay.
-        * @param {Object} [options={}] The options object.
-        * @param {boolean} [options.leading=false]
-        *  Specify invoking on the leading edge of the timeout.
-        * @param {number} [options.maxWait]
-        *  The maximum time `func` is allowed to be delayed before it's invoked.
-        * @param {boolean} [options.trailing=true]
-        *  Specify invoking on the trailing edge of the timeout.
-        * @returns {Function} Returns the new debounced function.
-        * @example
-        *
-        * // Avoid costly calculations while the window size is in flux.
-        * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
-        *
-        * // Invoke `sendMail` when clicked, debouncing subsequent calls.
-        * jQuery(element).on('click', _.debounce(sendMail, 300, {
-        *   'leading': true,
-        *   'trailing': false
-        * }));
-        *
-        * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
-        * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
-        * var source = new EventSource('/stream');
-        * jQuery(source).on('message', debounced);
-        *
-        * // Cancel the trailing debounced invocation.
-        * jQuery(window).on('popstate', debounced.cancel);
-        */
+         var _edit = behaviorEdit(context);

 
 

-       function debounce(func, wait, options) {
-         var lastArgs,
-             lastThis,
-             maxWait,
-             result,
-             timerId,
-             lastCallTime,
-             lastInvokeTime = 0,
-             leading = false,
-             maxing = false,
-             trailing = true;
+         var _closeTolerance = 4;
+         var _tolerance = 12;
+         var _mouseLeave = false;
+         var _lastMouse = null;

 
 

-         if (typeof func != 'function') {
-           throw new TypeError(FUNC_ERROR_TEXT);
-         }
+         var _lastPointerUpEvent;

 
 

-         wait = toNumber$1(wait) || 0;
+         var _downPointer; // use pointer events on supported platforms; fallback to mouse events

 
 

-         if (isObject$1(options)) {
-           leading = !!options.leading;
-           maxing = 'maxWait' in options;
-           maxWait = maxing ? nativeMax(toNumber$1(options.maxWait) || 0, wait) : maxWait;
-           trailing = 'trailing' in options ? !!options.trailing : trailing;
-         }

 
 

-         function invokeFunc(time) {
-           var args = lastArgs,
-               thisArg = lastThis;
-           lastArgs = lastThis = undefined;
-           lastInvokeTime = time;
-           result = func.apply(thisArg, args);
-           return result;
-         }
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // related code
+         // - `mode/drag_node.js` `datum()`

 
 

-         function leadingEdge(time) {
-           // Reset any `maxWait` timer.
-           lastInvokeTime = time; // Start the timer for the trailing edge.

 
 

-           timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.
+         function datum(d3_event) {
+           var mode = context.mode();
+           var isNote = mode && mode.id.indexOf('note') !== -1;
+           if (d3_event.altKey || isNote) return {};
+           var element;

 
 

-           return leading ? invokeFunc(time) : result;
+           if (d3_event.type === 'keydown') {
+             element = _lastMouse && _lastMouse.target;
+           } else {
+             element = d3_event.target;
+           } // When drawing, snap only to touch targets..
+           // (this excludes area fills and active drawing elements)
+
+
+           var d = element.__data__;
+           return d && d.properties && d.properties.target ? d : {};

          }
 
          }
 

-         function remainingWait(time) {
-           var timeSinceLastCall = time - lastCallTime,
-               timeSinceLastInvoke = time - lastInvokeTime,
-               timeWaiting = wait - timeSinceLastCall;
-           return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
+         function pointerdown(d3_event) {
+           if (_downPointer) return;
+           var pointerLocGetter = utilFastMouse(this);
+           _downPointer = {
+             id: d3_event.pointerId || 'mouse',
+             pointerLocGetter: pointerLocGetter,
+             downTime: +new Date(),
+             downLoc: pointerLocGetter(d3_event)
+           };
+           dispatch.call('down', this, d3_event, datum(d3_event));

          }
 
          }
 

-         function shouldInvoke(time) {
-           var timeSinceLastCall = time - lastCallTime,
-               timeSinceLastInvoke = time - lastInvokeTime; // Either this is the first call, activity has stopped and we're at the
-           // trailing edge, the system time has gone backwards and we're treating
-           // it as the trailing edge, or we've hit the `maxWait` limit.
+         function pointerup(d3_event) {
+           if (!_downPointer || _downPointer.id !== (d3_event.pointerId || 'mouse')) return;
+           var downPointer = _downPointer;
+           _downPointer = null;
+           _lastPointerUpEvent = d3_event;
+           if (downPointer.isCancelled) return;
+           var t2 = +new Date();
+           var p2 = downPointer.pointerLocGetter(d3_event);
+           var dist = geoVecLength(downPointer.downLoc, p2);

 
 

-           return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
+           if (dist < _closeTolerance || dist < _tolerance && t2 - downPointer.downTime < 500) {
+             // Prevent a quick second click
+             select(window).on('click.draw-block', function () {
+               d3_event.stopPropagation();
+             }, true);
+             context.map().dblclickZoomEnable(false);
+             window.setTimeout(function () {
+               context.map().dblclickZoomEnable(true);
+               select(window).on('click.draw-block', null);
+             }, 500);
+             click(d3_event, p2);
+           }

          }
 
          }
 

-         function timerExpired() {
-           var time = now$1();
+         function pointermove(d3_event) {
+           if (_downPointer && _downPointer.id === (d3_event.pointerId || 'mouse') && !_downPointer.isCancelled) {
+             var p2 = _downPointer.pointerLocGetter(d3_event);

 
 

-           if (shouldInvoke(time)) {
-             return trailingEdge(time);
-           } // Restart the timer.
+             var dist = geoVecLength(_downPointer.downLoc, p2);

 
 

+             if (dist >= _closeTolerance) {
+               _downPointer.isCancelled = true;
+               dispatch.call('downcancel', this);
+             }
+           }

 
 

-           timerId = setTimeout(timerExpired, remainingWait(time));
+           if (d3_event.pointerType && d3_event.pointerType !== 'mouse' || d3_event.buttons || _downPointer) return; // HACK: Mobile Safari likes to send one or more `mouse` type pointermove
+           // events immediately after non-mouse pointerup events; detect and ignore them.
+
+           if (_lastPointerUpEvent && _lastPointerUpEvent.pointerType !== 'mouse' && d3_event.timeStamp - _lastPointerUpEvent.timeStamp < 100) return;
+           _lastMouse = d3_event;
+           dispatch.call('move', this, d3_event, datum(d3_event));

          }
 
          }
 

-         function trailingEdge(time) {
-           timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been
-           // debounced at least once.
+         function pointercancel(d3_event) {
+           if (_downPointer && _downPointer.id === (d3_event.pointerId || 'mouse')) {
+             if (!_downPointer.isCancelled) {
+               dispatch.call('downcancel', this);
+             }

 
 

-           if (trailing && lastArgs) {
-             return invokeFunc(time);
+             _downPointer = null;

            }
            }

-
-           lastArgs = lastThis = undefined;
-           return result;

          }
 
          }
 

-         function cancel() {
-           if (timerId !== undefined) {
-             clearTimeout(timerId);
-           }
-
-           lastInvokeTime = 0;
-           lastArgs = lastCallTime = lastThis = timerId = undefined;
+         function mouseenter() {
+           _mouseLeave = false;

          }
 
          }
 

-         function flush() {
-           return timerId === undefined ? result : trailingEdge(now$1());
+         function mouseleave() {
+           _mouseLeave = true;

          }
 
          }
 

-         function debounced() {
-           var time = now$1(),
-               isInvoking = shouldInvoke(time);
-           lastArgs = arguments;
-           lastThis = this;
-           lastCallTime = time;
+         function allowsVertex(d) {
+           return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
+         } // related code
+         // - `mode/drag_node.js`     `doMove()`
+         // - `behavior/draw.js`      `click()`
+         // - `behavior/draw_way.js`  `move()`

 
 

-           if (isInvoking) {
-             if (timerId === undefined) {
-               return leadingEdge(lastCallTime);
-             }

 
 

-             if (maxing) {
-               // Handle invocations in a tight loop.
-               clearTimeout(timerId);
-               timerId = setTimeout(timerExpired, wait);
-               return invokeFunc(lastCallTime);
+         function click(d3_event, loc) {
+           var d = datum(d3_event);
+           var target = d && d.properties && d.properties.entity;
+           var mode = context.mode();
+
+           if (target && target.type === 'node' && allowsVertex(target)) {
+             // Snap to a node
+             dispatch.call('clickNode', this, target, d);
+             return;
+           } else if (target && target.type === 'way' && (mode.id !== 'add-point' || mode.preset.matchGeometry('vertex'))) {
+             // Snap to a way
+             var choice = geoChooseEdge(context.graph().childNodes(target), loc, context.projection, context.activeID());
+
+             if (choice) {
+               var edge = [target.nodes[choice.index - 1], target.nodes[choice.index]];
+               dispatch.call('clickWay', this, choice.loc, edge, d);
+               return;

              }
              }

+           } else if (mode.id !== 'add-point' || mode.preset.matchGeometry('point')) {
+             var locLatLng = context.projection.invert(loc);
+             dispatch.call('click', this, locLatLng, d);

            }
            }

+         } // treat a spacebar press like a click

 
 

-           if (timerId === undefined) {
-             timerId = setTimeout(timerExpired, wait);
-           }

 
 

-           return result;
-         }
+         function space(d3_event) {
+           d3_event.preventDefault();
+           d3_event.stopPropagation();
+           var currSpace = context.map().mouse();

 
 

-         debounced.cancel = cancel;
-         debounced.flush = flush;
-         return debounced;
-       }
+           if (_disableSpace && _lastSpace) {
+             var dist = geoVecLength(_lastSpace, currSpace);

 
 

-       /** Error message constants. */
+             if (dist > _tolerance) {
+               _disableSpace = false;
+             }
+           }

 
 

-       var FUNC_ERROR_TEXT$1 = 'Expected a function';
-       /**
-        * Creates a throttled function that only invokes `func` at most once per
-        * every `wait` milliseconds. The throttled function comes with a `cancel`
-        * method to cancel delayed `func` invocations and a `flush` method to
-        * immediately invoke them. Provide `options` to indicate whether `func`
-        * should be invoked on the leading and/or trailing edge of the `wait`
-        * timeout. The `func` is invoked with the last arguments provided to the
-        * throttled function. Subsequent calls to the throttled function return the
-        * result of the last `func` invocation.
-        *
-        * **Note:** If `leading` and `trailing` options are `true`, `func` is
-        * invoked on the trailing edge of the timeout only if the throttled function
-        * is invoked more than once during the `wait` timeout.
-        *
-        * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
-        * until to the next tick, similar to `setTimeout` with a timeout of `0`.
-        *
-        * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
-        * for details over the differences between `_.throttle` and `_.debounce`.
-        *
-        * @static
-        * @memberOf _
-        * @since 0.1.0
-        * @category Function
-        * @param {Function} func The function to throttle.
-        * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
-        * @param {Object} [options={}] The options object.
-        * @param {boolean} [options.leading=true]
-        *  Specify invoking on the leading edge of the timeout.
-        * @param {boolean} [options.trailing=true]
-        *  Specify invoking on the trailing edge of the timeout.
-        * @returns {Function} Returns the new throttled function.
-        * @example
-        *
-        * // Avoid excessively updating the position while scrolling.
-        * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
-        *
-        * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
-        * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
-        * jQuery(element).on('click', throttled);
-        *
-        * // Cancel the trailing throttled invocation.
-        * jQuery(window).on('popstate', throttled.cancel);
-        */
+           if (_disableSpace || _mouseLeave || !_lastMouse) return; // user must move mouse or release space bar to allow another click

 
 

-       function throttle(func, wait, options) {
-         var leading = true,
-             trailing = true;
+           _lastSpace = currSpace;
+           _disableSpace = true;
+           select(window).on('keyup.space-block', function () {
+             d3_event.preventDefault();
+             d3_event.stopPropagation();
+             _disableSpace = false;
+             select(window).on('keyup.space-block', null);
+           }); // get the current mouse position

 
 

-         if (typeof func != 'function') {
-           throw new TypeError(FUNC_ERROR_TEXT$1);
+           var loc = context.map().mouse() || // or the map center if the mouse has never entered the map
+           context.projection(context.map().center());
+           click(d3_event, loc);

          }
 
          }
 

-         if (isObject$1(options)) {
-           leading = 'leading' in options ? !!options.leading : leading;
-           trailing = 'trailing' in options ? !!options.trailing : trailing;
+         function backspace(d3_event) {
+           d3_event.preventDefault();
+           dispatch.call('undo');

          }
 
          }
 

-         return debounce(func, wait, {
-           'leading': leading,
-           'maxWait': wait,
-           'trailing': trailing
-         });
-       }
+         function del(d3_event) {
+           d3_event.preventDefault();
+           dispatch.call('cancel');
+         }

 
 

-       var hashes = createCommonjsModule(function (module, exports) {
-         /**
-          * jshashes - https://github.com/h2non/jshashes
-          * Released under the "New BSD" license
-          *
-          * Algorithms specification:
-          *
-          * MD5 - http://www.ietf.org/rfc/rfc1321.txt
-          * RIPEMD-160 - http://homes.esat.kuleuven.be/~bosselae/ripemd160.html
-          * SHA1   - http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
-          * SHA256 - http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
-          * SHA512 - http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
-          * HMAC - http://www.ietf.org/rfc/rfc2104.txt
-          */
-         (function () {
-           var Hashes;
+         function ret(d3_event) {
+           d3_event.preventDefault();
+           dispatch.call('finish');
+         }

 
 

-           function utf8Encode(str) {
-             var x,
-                 y,
-                 output = '',
-                 i = -1,
-                 l;
+         function behavior(selection) {
+           context.install(_hover);
+           context.install(_edit);
+           _downPointer = null;
+           keybinding.on('⌫', backspace).on('⌦', del).on('⎋', ret).on('↩', ret).on('space', space).on('⌥space', space);
+           selection.on('mouseenter.draw', mouseenter).on('mouseleave.draw', mouseleave).on(_pointerPrefix + 'down.draw', pointerdown).on(_pointerPrefix + 'move.draw', pointermove);
+           select(window).on(_pointerPrefix + 'up.draw', pointerup, true).on('pointercancel.draw', pointercancel, true);
+           select(document).call(keybinding);
+           return behavior;
+         }

 
 

-             if (str && str.length) {
-               l = str.length;
+         behavior.off = function (selection) {
+           context.ui().sidebar.hover.cancel();
+           context.uninstall(_hover);
+           context.uninstall(_edit);
+           selection.on('mouseenter.draw', null).on('mouseleave.draw', null).on(_pointerPrefix + 'down.draw', null).on(_pointerPrefix + 'move.draw', null);
+           select(window).on(_pointerPrefix + 'up.draw', null).on('pointercancel.draw', null); // note: keyup.space-block, click.draw-block should remain

 
 

-               while ((i += 1) < l) {
-                 /* Decode utf-16 surrogate pairs */
-                 x = str.charCodeAt(i);
-                 y = i + 1 < l ? str.charCodeAt(i + 1) : 0;
+           select(document).call(keybinding.unbind);
+         };

 
 

-                 if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
-                   x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
-                   i += 1;
-                 }
-                 /* Encode output as utf-8 */
+         behavior.hover = function () {
+           return _hover;
+         };

 
 

+         return utilRebind(behavior, dispatch, 'on');
+       }

 
 

-                 if (x <= 0x7F) {
-                   output += String.fromCharCode(x);
-                 } else if (x <= 0x7FF) {
-                   output += String.fromCharCode(0xC0 | x >>> 6 & 0x1F, 0x80 | x & 0x3F);
-                 } else if (x <= 0xFFFF) {
-                   output += String.fromCharCode(0xE0 | x >>> 12 & 0x0F, 0x80 | x >>> 6 & 0x3F, 0x80 | x & 0x3F);
-                 } else if (x <= 0x1FFFFF) {
-                   output += String.fromCharCode(0xF0 | x >>> 18 & 0x07, 0x80 | x >>> 12 & 0x3F, 0x80 | x >>> 6 & 0x3F, 0x80 | x & 0x3F);
-                 }
-               }
-             }
+       function initRange(domain, range) {
+         switch (arguments.length) {
+           case 0:
+             break;

 
 

-             return output;
-           }
+           case 1:
+             this.range(domain);
+             break;

 
 

-           function utf8Decode(str) {
-             var i,
-                 ac,
-                 c1,
-                 c2,
-                 c3,
-                 arr = [],
-                 l;
-             i = ac = c1 = c2 = c3 = 0;
+           default:
+             this.range(range).domain(domain);
+             break;
+         }

 
 

-             if (str && str.length) {
-               l = str.length;
-               str += '';
+         return this;
+       }

 
 

-               while (i < l) {
-                 c1 = str.charCodeAt(i);
-                 ac += 1;
+       function constants(x) {
+         return function () {
+           return x;
+         };
+       }

 
 

-                 if (c1 < 128) {
-                   arr[ac] = String.fromCharCode(c1);
-                   i += 1;
-                 } else if (c1 > 191 && c1 < 224) {
-                   c2 = str.charCodeAt(i + 1);
-                   arr[ac] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);
-                   i += 2;
-                 } else {
-                   c2 = str.charCodeAt(i + 1);
-                   c3 = str.charCodeAt(i + 2);
-                   arr[ac] = String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
-                   i += 3;
-                 }
-               }
-             }
+       function number(x) {
+         return +x;
+       }

 
 

-             return arr.join('');
-           }
-           /**
-            * Add integers, wrapping at 2^32. This uses 16-bit operations internally
-            * to work around bugs in some JS interpreters.
-            */
+       var unit = [0, 1];
+       function identity$1(x) {
+         return x;
+       }

 
 

+       function normalize(a, b) {
+         return (b -= a = +a) ? function (x) {
+           return (x - a) / b;
+         } : constants(isNaN(b) ? NaN : 0.5);
+       }

 
 

-           function safe_add(x, y) {
-             var lsw = (x & 0xFFFF) + (y & 0xFFFF),
-                 msw = (x >> 16) + (y >> 16) + (lsw >> 16);
-             return msw << 16 | lsw & 0xFFFF;
-           }
-           /**
-            * Bitwise rotate a 32-bit number to the left.
-            */
+       function clamper(a, b) {
+         var t;
+         if (a > b) t = a, a = b, b = t;
+         return function (x) {
+           return Math.max(a, Math.min(b, x));
+         };
+       } // normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
+       // interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].

 
 
 
 

-           function bit_rol(num, cnt) {
-             return num << cnt | num >>> 32 - cnt;
-           }
-           /**
-            * Convert a raw string to a hex string
-            */
+       function bimap(domain, range, interpolate) {
+         var d0 = domain[0],
+             d1 = domain[1],
+             r0 = range[0],
+             r1 = range[1];
+         if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);
+         return function (x) {
+           return r0(d0(x));
+         };
+       }

 
 

+       function polymap(domain, range, interpolate) {
+         var j = Math.min(domain.length, range.length) - 1,
+             d = new Array(j),
+             r = new Array(j),
+             i = -1; // Reverse descending domains.

 
 

-           function rstr2hex(input, hexcase) {
-             var hex_tab = hexcase ? '0123456789ABCDEF' : '0123456789abcdef',
-                 output = '',
-                 x,
-                 i = 0,
-                 l = input.length;
+         if (domain[j] < domain[0]) {
+           domain = domain.slice().reverse();
+           range = range.slice().reverse();
+         }

 
 

-             for (; i < l; i += 1) {
-               x = input.charCodeAt(i);
-               output += hex_tab.charAt(x >>> 4 & 0x0F) + hex_tab.charAt(x & 0x0F);
-             }
+         while (++i < j) {
+           d[i] = normalize(domain[i], domain[i + 1]);
+           r[i] = interpolate(range[i], range[i + 1]);
+         }

 
 

-             return output;
-           }
-           /**
-            * Convert an array of big-endian words to a string
-            */
+         return function (x) {
+           var i = bisectRight(domain, x, 1, j) - 1;
+           return r[i](d[i](x));
+         };
+       }

 
 

+       function copy(source, target) {
+         return target.domain(source.domain()).range(source.range()).interpolate(source.interpolate()).clamp(source.clamp()).unknown(source.unknown());
+       }
+       function transformer() {
+         var domain = unit,
+             range = unit,
+             interpolate = interpolate$1,
+             transform,
+             untransform,
+             unknown,
+             clamp = identity$1,
+             piecewise,
+             output,
+             input;

 
 

-           function binb2rstr(input) {
-             var i,
-                 l = input.length * 32,
-                 output = '';
+         function rescale() {
+           var n = Math.min(domain.length, range.length);
+           if (clamp !== identity$1) clamp = clamper(domain[0], domain[n - 1]);
+           piecewise = n > 2 ? polymap : bimap;
+           output = input = null;
+           return scale;
+         }

 
 

-             for (i = 0; i < l; i += 8) {
-               output += String.fromCharCode(input[i >> 5] >>> 24 - i % 32 & 0xFF);
-             }
+         function scale(x) {
+           return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x)));
+         }

 
 

-             return output;
-           }
-           /**
-            * Convert an array of little-endian words to a string
-            */
+         scale.invert = function (y) {
+           return clamp(untransform((input || (input = piecewise(range, domain.map(transform), d3_interpolateNumber)))(y)));
+         };

 
 

+         scale.domain = function (_) {
+           return arguments.length ? (domain = Array.from(_, number), rescale()) : domain.slice();
+         };

 
 

-           function binl2rstr(input) {
-             var i,
-                 l = input.length * 32,
-                 output = '';
+         scale.range = function (_) {
+           return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
+         };

 
 

-             for (i = 0; i < l; i += 8) {
-               output += String.fromCharCode(input[i >> 5] >>> i % 32 & 0xFF);
-             }
+         scale.rangeRound = function (_) {
+           return range = Array.from(_), interpolate = interpolateRound, rescale();
+         };

 
 

-             return output;
-           }
-           /**
-            * Convert a raw string to an array of little-endian words
-            * Characters >255 have their high-byte silently ignored.
-            */
+         scale.clamp = function (_) {
+           return arguments.length ? (clamp = _ ? true : identity$1, rescale()) : clamp !== identity$1;
+         };

 
 

+         scale.interpolate = function (_) {
+           return arguments.length ? (interpolate = _, rescale()) : interpolate;
+         };

 
 

-           function rstr2binl(input) {
-             var i,
-                 l = input.length * 8,
-                 output = Array(input.length >> 2),
-                 lo = output.length;
+         scale.unknown = function (_) {
+           return arguments.length ? (unknown = _, scale) : unknown;
+         };

 
 

-             for (i = 0; i < lo; i += 1) {
-               output[i] = 0;
-             }
+         return function (t, u) {
+           transform = t, untransform = u;
+           return rescale();
+         };
+       }
+       function continuous() {
+         return transformer()(identity$1, identity$1);
+       }

 
 

-             for (i = 0; i < l; i += 8) {
-               output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << i % 32;
-             }
+       function formatDecimal (x) {
+         return Math.abs(x = Math.round(x)) >= 1e21 ? x.toLocaleString("en").replace(/,/g, "") : x.toString(10);
+       } // Computes the decimal coefficient and exponent of the specified number x with
+       // significant digits p, where x is positive and p is in [1, 21] or undefined.
+       // For example, formatDecimalParts(1.23) returns ["123", 0].

 
 

-             return output;
-           }
-           /**
-            * Convert a raw string to an array of big-endian words
-            * Characters >255 have their high-byte silently ignored.
-            */
+       function formatDecimalParts(x, p) {
+         if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity

 
 

+         var i,
+             coefficient = x.slice(0, i); // The string returned by toExponential either has the form \d\.\d+e[-+]\d+
+         // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).

 
 

-           function rstr2binb(input) {
-             var i,
-                 l = input.length * 8,
-                 output = Array(input.length >> 2),
-                 lo = output.length;
+         return [coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, +x.slice(i + 1)];
+       }

 
 

-             for (i = 0; i < lo; i += 1) {
-               output[i] = 0;
-             }
+       function exponent (x) {
+         return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN;
+       }

 
 

-             for (i = 0; i < l; i += 8) {
-               output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << 24 - i % 32;
-             }
+       function formatGroup (grouping, thousands) {
+         return function (value, width) {
+           var i = value.length,
+               t = [],
+               j = 0,
+               g = grouping[0],
+               length = 0;

 
 

-             return output;
+           while (i > 0 && g > 0) {
+             if (length + g + 1 > width) g = Math.max(1, width - length);
+             t.push(value.substring(i -= g, i + g));
+             if ((length += g + 1) > width) break;
+             g = grouping[j = (j + 1) % grouping.length];

            }
            }

-           /**
-            * Convert a raw string to an arbitrary string encoding
-            */

 
 

+           return t.reverse().join(thousands);
+         };
+       }

 
 

-           function rstr2any(input, encoding) {
-             var divisor = encoding.length,
-                 remainders = Array(),
-                 i,
-                 q,
-                 x,
-                 ld,
-                 quotient,
-                 dividend,
-                 output,
-                 full_length;
-             /* Convert to an array of 16-bit big-endian values, forming the dividend */
-
-             dividend = Array(Math.ceil(input.length / 2));
-             ld = dividend.length;
+       function formatNumerals (numerals) {
+         return function (value) {
+           return value.replace(/[0-9]/g, function (i) {
+             return numerals[+i];
+           });
+         };
+       }

 
 

-             for (i = 0; i < ld; i += 1) {
-               dividend[i] = input.charCodeAt(i * 2) << 8 | input.charCodeAt(i * 2 + 1);
-             }
-             /**
-              * Repeatedly perform a long division. The binary array forms the dividend,
-              * the length of the encoding is the divisor. Once computed, the quotient
-              * forms the dividend for the next step. We stop when the dividend is zerHashes.
-              * All remainders are stored for later use.
-              */
+       // [[fill]align][sign][symbol][0][width][,][.precision][~][type]
+       var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;
+       function formatSpecifier(specifier) {
+         if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
+         var match;
+         return new FormatSpecifier({
+           fill: match[1],
+           align: match[2],
+           sign: match[3],
+           symbol: match[4],
+           zero: match[5],
+           width: match[6],
+           comma: match[7],
+           precision: match[8] && match[8].slice(1),
+           trim: match[9],
+           type: match[10]
+         });
+       }
+       formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof

 
 

+       function FormatSpecifier(specifier) {
+         this.fill = specifier.fill === undefined ? " " : specifier.fill + "";
+         this.align = specifier.align === undefined ? ">" : specifier.align + "";
+         this.sign = specifier.sign === undefined ? "-" : specifier.sign + "";
+         this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + "";
+         this.zero = !!specifier.zero;
+         this.width = specifier.width === undefined ? undefined : +specifier.width;
+         this.comma = !!specifier.comma;
+         this.precision = specifier.precision === undefined ? undefined : +specifier.precision;
+         this.trim = !!specifier.trim;
+         this.type = specifier.type === undefined ? "" : specifier.type + "";
+       }

 
 

-             while (dividend.length > 0) {
-               quotient = Array();
-               x = 0;
+       FormatSpecifier.prototype.toString = function () {
+         return this.fill + this.align + this.sign + this.symbol + (this.zero ? "0" : "") + (this.width === undefined ? "" : Math.max(1, this.width | 0)) + (this.comma ? "," : "") + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) + (this.trim ? "~" : "") + this.type;
+       };

 
 

-               for (i = 0; i < dividend.length; i += 1) {
-                 x = (x << 16) + dividend[i];
-                 q = Math.floor(x / divisor);
-                 x -= q * divisor;
+       // Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.
+       function formatTrim (s) {
+         out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {
+           switch (s[i]) {
+             case ".":
+               i0 = i1 = i;
+               break;

 
 

-                 if (quotient.length > 0 || q > 0) {
-                   quotient[quotient.length] = q;
-                 }
-               }
+             case "0":
+               if (i0 === 0) i0 = i;
+               i1 = i;
+               break;

 
 

-               remainders[remainders.length] = x;
-               dividend = quotient;
-             }
-             /* Convert the remainders to the output string */
+             default:
+               if (!+s[i]) break out;
+               if (i0 > 0) i0 = 0;
+               break;
+           }
+         }

 
 

+         return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
+       }

 
 

-             output = '';
+       var $$7 = _export;
+       var fails$3 = fails$N;
+       var thisNumberValue = thisNumberValue$2;

 
 

-             for (i = remainders.length - 1; i >= 0; i--) {
-               output += encoding.charAt(remainders[i]);
-             }
-             /* Append leading zero equivalents */
+       var nativeToPrecision = 1.0.toPrecision;

 
 

+       var FORCED$1 = fails$3(function () {
+         // IE7-
+         return nativeToPrecision.call(1, undefined) !== '1';
+       }) || !fails$3(function () {
+         // V8 ~ Android 4.3-
+         nativeToPrecision.call({});
+       });

 
 

-             full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));
+       // `Number.prototype.toPrecision` method
+       // https://tc39.es/ecma262/#sec-number.prototype.toprecision
+       $$7({ target: 'Number', proto: true, forced: FORCED$1 }, {
+         toPrecision: function toPrecision(precision) {
+           return precision === undefined
+             ? nativeToPrecision.call(thisNumberValue(this))
+             : nativeToPrecision.call(thisNumberValue(this), precision);
+         }
+       });

 
 

-             for (i = output.length; i < full_length; i += 1) {
-               output = encoding[0] + output;
-             }
+       var prefixExponent;
+       function formatPrefixAuto (x, p) {
+         var d = formatDecimalParts(x, p);
+         if (!d) return x + "";
+         var coefficient = d[0],
+             exponent = d[1],
+             i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
+             n = coefficient.length;
+         return i === n ? coefficient : i > n ? coefficient + new Array(i - n + 1).join("0") : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y!
+       }

 
 

-             return output;
-           }
-           /**
-            * Convert a raw string to a base-64 string
-            */
+       function formatRounded (x, p) {
+         var d = formatDecimalParts(x, p);
+         if (!d) return x + "";
+         var coefficient = d[0],
+             exponent = d[1];
+         return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) : coefficient + new Array(exponent - coefficient.length + 2).join("0");
+       }

 
 

+       var formatTypes = {
+         "%": function _(x, p) {
+           return (x * 100).toFixed(p);
+         },
+         "b": function b(x) {
+           return Math.round(x).toString(2);
+         },
+         "c": function c(x) {
+           return x + "";
+         },
+         "d": formatDecimal,
+         "e": function e(x, p) {
+           return x.toExponential(p);
+         },
+         "f": function f(x, p) {
+           return x.toFixed(p);
+         },
+         "g": function g(x, p) {
+           return x.toPrecision(p);
+         },
+         "o": function o(x) {
+           return Math.round(x).toString(8);
+         },
+         "p": function p(x, _p) {
+           return formatRounded(x * 100, _p);
+         },
+         "r": formatRounded,
+         "s": formatPrefixAuto,
+         "X": function X(x) {
+           return Math.round(x).toString(16).toUpperCase();
+         },
+         "x": function x(_x) {
+           return Math.round(_x).toString(16);
+         }
+       };

 
 

-           function rstr2b64(input, b64pad) {
-             var tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
-                 output = '',
-                 len = input.length,
-                 i,
-                 j,
-                 triplet;
-             b64pad = b64pad || '=';
+       function identity (x) {
+         return x;
+       }

 
 

-             for (i = 0; i < len; i += 3) {
-               triplet = input.charCodeAt(i) << 16 | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
+       var map$1 = Array.prototype.map,
+           prefixes = ["y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y"];
+       function formatLocale (locale) {
+         var group = locale.grouping === undefined || locale.thousands === undefined ? identity : formatGroup(map$1.call(locale.grouping, Number), locale.thousands + ""),
+             currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
+             currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
+             decimal = locale.decimal === undefined ? "." : locale.decimal + "",
+             numerals = locale.numerals === undefined ? identity : formatNumerals(map$1.call(locale.numerals, String)),
+             percent = locale.percent === undefined ? "%" : locale.percent + "",
+             minus = locale.minus === undefined ? "−" : locale.minus + "",
+             nan = locale.nan === undefined ? "NaN" : locale.nan + "";

 
 

-               for (j = 0; j < 4; j += 1) {
-                 if (i * 8 + j * 6 > input.length * 8) {
-                   output += b64pad;
-                 } else {
-                   output += tab.charAt(triplet >>> 6 * (3 - j) & 0x3F);
-                 }
-               }
-             }
+         function newFormat(specifier) {
+           specifier = formatSpecifier(specifier);
+           var fill = specifier.fill,
+               align = specifier.align,
+               sign = specifier.sign,
+               symbol = specifier.symbol,
+               zero = specifier.zero,
+               width = specifier.width,
+               comma = specifier.comma,
+               precision = specifier.precision,
+               trim = specifier.trim,
+               type = specifier.type; // The "n" type is an alias for ",g".

 
 

-             return output;
-           }
+           if (type === "n") comma = true, type = "g"; // The "" type, and any invalid type, is an alias for ".12~g".
+           else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; // If zero fill is specified, padding goes after sign and before digits.

 
 

-           Hashes = {
-             /**
-              * @property {String} version
-              * @readonly
-              */
-             VERSION: '1.0.6',
+           if (zero || fill === "0" && align === "=") zero = true, fill = "0", align = "="; // Compute the prefix and suffix.
+           // For SI-prefix, the suffix is lazily computed.

 
 

-             /**
-              * @member Hashes
-              * @class Base64
-              * @constructor
-              */
-             Base64: function Base64() {
-               // private properties
-               var tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
-                   pad = '=',
-                   // URL encoding support @todo
-               utf8 = true; // by default enable UTF-8 support encoding
-               // public method for encoding
+           var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
+               suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; // What format function should we use?
+           // Is this an integer type?
+           // Can this type generate exponential notation?

 
 

-               this.encode = function (input) {
-                 var i,
-                     j,
-                     triplet,
-                     output = '',
-                     len = input.length;
-                 pad = pad || '=';
-                 input = utf8 ? utf8Encode(input) : input;
+           var formatType = formatTypes[type],
+               maybeSuffix = /[defgprs%]/.test(type); // Set the default precision if not specified,
+           // or clamp the specified precision to the supported range.
+           // For significant precision, it must be in [1, 21].
+           // For fixed precision, it must be in [0, 20].

 
 

-                 for (i = 0; i < len; i += 3) {
-                   triplet = input.charCodeAt(i) << 16 | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
+           precision = precision === undefined ? 6 : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) : Math.max(0, Math.min(20, precision));

 
 

-                   for (j = 0; j < 4; j += 1) {
-                     if (i * 8 + j * 6 > len * 8) {
-                       output += pad;
-                     } else {
-                       output += tab.charAt(triplet >>> 6 * (3 - j) & 0x3F);
-                     }
-                   }
-                 }
+           function format(value) {
+             var valuePrefix = prefix,
+                 valueSuffix = suffix,
+                 i,
+                 n,
+                 c;

 
 

-                 return output;
-               }; // public method for decoding
+             if (type === "c") {
+               valueSuffix = formatType(value) + valueSuffix;
+               value = "";
+             } else {
+               value = +value; // Determine the sign. -0 is not less than 0, but 1 / -0 is!

 
 

+               var valueNegative = value < 0 || 1 / value < 0; // Perform the initial formatting.

 
 

-               this.decode = function (input) {
-                 // var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-                 var i,
-                     o1,
-                     o2,
-                     o3,
-                     h1,
-                     h2,
-                     h3,
-                     h4,
-                     bits,
-                     ac,
-                     dec = '',
-                     arr = [];
+               value = isNaN(value) ? nan : formatType(Math.abs(value), precision); // Trim insignificant zeros.

 
 

-                 if (!input) {
-                   return input;
-                 }
+               if (trim) value = formatTrim(value); // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.

 
 

-                 i = ac = 0;
-                 input = input.replace(new RegExp('\\' + pad, 'gi'), ''); // use '='
-                 //input += '';
+               if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; // Compute the prefix and suffix.

 
 

-                 do {
-                   // unpack four hexets into three octets using index points in b64
-                   h1 = tab.indexOf(input.charAt(i += 1));
-                   h2 = tab.indexOf(input.charAt(i += 1));
-                   h3 = tab.indexOf(input.charAt(i += 1));
-                   h4 = tab.indexOf(input.charAt(i += 1));
-                   bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
-                   o1 = bits >> 16 & 0xff;
-                   o2 = bits >> 8 & 0xff;
-                   o3 = bits & 0xff;
-                   ac += 1;
+               valuePrefix = (valueNegative ? sign === "(" ? sign : minus : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+               valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); // Break the formatted value into the integer “value” part that can be
+               // grouped, and fractional or exponential “suffix” part that is not.

 
 

-                   if (h3 === 64) {
-                     arr[ac] = String.fromCharCode(o1);
-                   } else if (h4 === 64) {
-                     arr[ac] = String.fromCharCode(o1, o2);
-                   } else {
-                     arr[ac] = String.fromCharCode(o1, o2, o3);
+               if (maybeSuffix) {
+                 i = -1, n = value.length;
+
+                 while (++i < n) {
+                   if (c = value.charCodeAt(i), 48 > c || c > 57) {
+                     valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
+                     value = value.slice(0, i);
+                     break;

                    }
                    }

-                 } while (i < input.length);
+                 }
+               }
+             } // If the fill character is not "0", grouping is applied before padding.

 
 

-                 dec = arr.join('');
-                 dec = utf8 ? utf8Decode(dec) : dec;
-                 return dec;
-               }; // set custom pad string

 
 

+             if (comma && !zero) value = group(value, Infinity); // Compute the padding.

 
 

-               this.setPad = function (str) {
-                 pad = str || pad;
-                 return this;
-               }; // set custom tab string characters
+             var length = valuePrefix.length + value.length + valueSuffix.length,
+                 padding = length < width ? new Array(width - length + 1).join(fill) : ""; // If the fill character is "0", grouping is applied after padding.

 
 

+             if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; // Reconstruct the final output based on the desired alignment.

 
 

-               this.setTab = function (str) {
-                 tab = str || tab;
-                 return this;
-               };
+             switch (align) {
+               case "<":
+                 value = valuePrefix + value + valueSuffix + padding;
+                 break;

 
 

-               this.setUTF8 = function (bool) {
-                 if (typeof bool === 'boolean') {
-                   utf8 = bool;
-                 }
+               case "=":
+                 value = valuePrefix + padding + value + valueSuffix;
+                 break;

 
 

-                 return this;
-               };
-             },
+               case "^":
+                 value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length);
+                 break;

 
 

-             /**
-              * CRC-32 calculation
-              * @member Hashes
-              * @method CRC32
-              * @static
-              * @param {String} str Input String
-              * @return {String}
-              */
-             CRC32: function CRC32(str) {
-               var crc = 0,
-                   x = 0,
-                   y = 0,
-                   table,
-                   i,
-                   iTop;
-               str = utf8Encode(str);
-               table = ['00000000 77073096 EE0E612C 990951BA 076DC419 706AF48F E963A535 9E6495A3 0EDB8832 ', '79DCB8A4 E0D5E91E 97D2D988 09B64C2B 7EB17CBD E7B82D07 90BF1D91 1DB71064 6AB020F2 F3B97148 ', '84BE41DE 1ADAD47D 6DDDE4EB F4D4B551 83D385C7 136C9856 646BA8C0 FD62F97A 8A65C9EC 14015C4F ', '63066CD9 FA0F3D63 8D080DF5 3B6E20C8 4C69105E D56041E4 A2677172 3C03E4D1 4B04D447 D20D85FD ', 'A50AB56B 35B5A8FA 42B2986C DBBBC9D6 ACBCF940 32D86CE3 45DF5C75 DCD60DCF ABD13D59 26D930AC ', '51DE003A C8D75180 BFD06116 21B4F4B5 56B3C423 CFBA9599 B8BDA50F 2802B89E 5F058808 C60CD9B2 ', 'B10BE924 2F6F7C87 58684C11 C1611DAB B6662D3D 76DC4190 01DB7106 98D220BC EFD5102A 71B18589 ', '06B6B51F 9FBFE4A5 E8B8D433 7807C9A2 0F00F934 9609A88E E10E9818 7F6A0DBB 086D3D2D 91646C97 ', 'E6635C01 6B6B51F4 1C6C6162 856530D8 F262004E 6C0695ED 1B01A57B 8208F4C1 F50FC457 65B0D9C6 ', '12B7E950 8BBEB8EA FCB9887C 62DD1DDF 15DA2D49 8CD37CF3 FBD44C65 4DB26158 3AB551CE A3BC0074 ', 'D4BB30E2 4ADFA541 3DD895D7 A4D1C46D D3D6F4FB 4369E96A 346ED9FC AD678846 DA60B8D0 44042D73 ', '33031DE5 AA0A4C5F DD0D7CC9 5005713C 270241AA BE0B1010 C90C2086 5768B525 206F85B3 B966D409 ', 'CE61E49F 5EDEF90E 29D9C998 B0D09822 C7D7A8B4 59B33D17 2EB40D81 B7BD5C3B C0BA6CAD EDB88320 ', '9ABFB3B6 03B6E20C 74B1D29A EAD54739 9DD277AF 04DB2615 73DC1683 E3630B12 94643B84 0D6D6A3E ', '7A6A5AA8 E40ECF0B 9309FF9D 0A00AE27 7D079EB1 F00F9344 8708A3D2 1E01F268 6906C2FE F762575D ', '806567CB 196C3671 6E6B06E7 FED41B76 89D32BE0 10DA7A5A 67DD4ACC F9B9DF6F 8EBEEFF9 17B7BE43 ', '60B08ED5 D6D6A3E8 A1D1937E 38D8C2C4 4FDFF252 D1BB67F1 A6BC5767 3FB506DD 48B2364B D80D2BDA ', 'AF0A1B4C 36034AF6 41047A60 DF60EFC3 A867DF55 316E8EEF 4669BE79 CB61B38C BC66831A 256FD2A0 ', '5268E236 CC0C7795 BB0B4703 220216B9 5505262F C5BA3BBE B2BD0B28 2BB45A92 5CB36A04 C2D7FFA7 ', 'B5D0CF31 2CD99E8B 5BDEAE1D 9B64C2B0 EC63F226 756AA39C 026D930A 9C0906A9 EB0E363F 72076785 ', '05005713 95BF4A82 E2B87A14 7BB12BAE 0CB61B38 92D28E9B E5D5BE0D 7CDCEFB7 0BDBDF21 86D3D2D4 ', 'F1D4E242 68DDB3F8 1FDA836E 81BE16CD F6B9265B 6FB077E1 18B74777 88085AE6 FF0F6A70 66063BCA ', '11010B5C 8F659EFF F862AE69 616BFFD3 166CCF45 A00AE278 D70DD2EE 4E048354 3903B3C2 A7672661 ', 'D06016F7 4969474D 3E6E77DB AED16A4A D9D65ADC 40DF0B66 37D83BF0 A9BCAE53 DEBB9EC5 47B2CF7F ', '30B5FFE9 BDBDF21C CABAC28A 53B39330 24B4A3A6 BAD03605 CDD70693 54DE5729 23D967BF B3667A2E ', 'C4614AB8 5D681B02 2A6F2B94 B40BBE37 C30C8EA1 5A05DF1B 2D02EF8D'].join('');
-               crc = crc ^ -1;
+               default:
+                 value = padding + valuePrefix + value + valueSuffix;
+                 break;
+             }

 
 

-               for (i = 0, iTop = str.length; i < iTop; i += 1) {
-                 y = (crc ^ str.charCodeAt(i)) & 0xFF;
-                 x = '0x' + table.substr(y * 9, 8);
-                 crc = crc >>> 8 ^ x;
-               } // always return a positive number (that's what >>> 0 does)
+             return numerals(value);
+           }

 
 

+           format.toString = function () {
+             return specifier + "";
+           };

 
 

-               return (crc ^ -1) >>> 0;
-             },
+           return format;
+         }

 
 

-             /**
-              * @member Hashes
-              * @class MD5
-              * @constructor
-              * @param {Object} [config]
-              *
-              * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
-              * Digest Algorithm, as defined in RFC 1321.
-              * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
-              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
-              * See <http://pajhome.org.uk/crypt/md5> for more infHashes.
-              */
-             MD5: function MD5(options) {
-               /**
-                * Private config properties. You may need to tweak these to be compatible with
-                * the server-side, but the defaults work in most cases.
-                * See {@link Hashes.MD5#method-setUpperCase} and {@link Hashes.SHA1#method-setUpperCase}
-                */
-               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
-                   // hexadecimal output case format. false - lowercase; true - uppercase
-               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
-                   // base-64 pad character. Defaults to '=' for strict RFC compliance
-               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true; // enable/disable utf8 encoding
-               // privileged (public) methods
+         function formatPrefix(specifier, value) {
+           var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
+               e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,
+               k = Math.pow(10, -e),
+               prefix = prefixes[8 + e / 3];
+           return function (value) {
+             return f(k * value) + prefix;
+           };
+         }

 
 

-               this.hex = function (s) {
-                 return rstr2hex(rstr(s), hexcase);
-               };
+         return {
+           format: newFormat,
+           formatPrefix: formatPrefix
+         };
+       }

 
 

-               this.b64 = function (s) {
-                 return rstr2b64(rstr(s), b64pad);
-               };
+       var locale;
+       var format$1;
+       var formatPrefix;
+       defaultLocale({
+         thousands: ",",
+         grouping: [3],
+         currency: ["$", ""]
+       });
+       function defaultLocale(definition) {
+         locale = formatLocale(definition);
+         format$1 = locale.format;
+         formatPrefix = locale.formatPrefix;
+         return locale;
+       }

 
 

-               this.any = function (s, e) {
-                 return rstr2any(rstr(s), e);
-               };
+       function precisionFixed (step) {
+         return Math.max(0, -exponent(Math.abs(step)));
+       }

 
 

-               this.raw = function (s) {
-                 return rstr(s);
-               };
+       function precisionPrefix (step, value) {
+         return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));
+       }

 
 

-               this.hex_hmac = function (k, d) {
-                 return rstr2hex(rstr_hmac(k, d), hexcase);
-               };
+       function precisionRound (step, max) {
+         step = Math.abs(step), max = Math.abs(max) - step;
+         return Math.max(0, exponent(max) - exponent(step)) + 1;
+       }

 
 

-               this.b64_hmac = function (k, d) {
-                 return rstr2b64(rstr_hmac(k, d), b64pad);
-               };
+       function tickFormat(start, stop, count, specifier) {
+         var step = tickStep(start, stop, count),
+             precision;
+         specifier = formatSpecifier(specifier == null ? ",f" : specifier);

 
 

-               this.any_hmac = function (k, d, e) {
-                 return rstr2any(rstr_hmac(k, d), e);
-               };
-               /**
-                * Perform a simple self-test to see if the VM is working
-                * @return {String} Hexadecimal hash sample
-                */
+         switch (specifier.type) {
+           case "s":
+             {
+               var value = Math.max(Math.abs(start), Math.abs(stop));
+               if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;
+               return formatPrefix(specifier, value);
+             }

 
 

+           case "":
+           case "e":
+           case "g":
+           case "p":
+           case "r":
+             {
+               if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === "e");
+               break;
+             }

 
 

-               this.vm_test = function () {
-                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
-               };
-               /**
-                * Enable/disable uppercase hexadecimal returned string
-                * @param {Boolean}
-                * @return {Object} this
-                */
+           case "f":
+           case "%":
+             {
+               if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === "%") * 2;
+               break;
+             }
+         }

 
 

+         return format$1(specifier);
+       }

 
 

-               this.setUpperCase = function (a) {
-                 if (typeof a === 'boolean') {
-                   hexcase = a;
-                 }
+       function linearish(scale) {
+         var domain = scale.domain;

 
 

-                 return this;
-               };
-               /**
-                * Defines a base64 pad string
-                * @param {String} Pad
-                * @return {Object} this
-                */
+         scale.ticks = function (count) {
+           var d = domain();
+           return ticks(d[0], d[d.length - 1], count == null ? 10 : count);
+         };

 
 

+         scale.tickFormat = function (count, specifier) {
+           var d = domain();
+           return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);
+         };

 
 

-               this.setPad = function (a) {
-                 b64pad = a || b64pad;
-                 return this;
-               };
-               /**
-                * Defines a base64 pad string
-                * @param {Boolean}
-                * @return {Object} [this]
-                */
+         scale.nice = function (count) {
+           if (count == null) count = 10;
+           var d = domain();
+           var i0 = 0;
+           var i1 = d.length - 1;
+           var start = d[i0];
+           var stop = d[i1];
+           var prestep;
+           var step;
+           var maxIter = 10;

 
 

+           if (stop < start) {
+             step = start, start = stop, stop = step;
+             step = i0, i0 = i1, i1 = step;
+           }

 
 

-               this.setUTF8 = function (a) {
-                 if (typeof a === 'boolean') {
-                   utf8 = a;
-                 }
+           while (maxIter-- > 0) {
+             step = tickIncrement(start, stop, count);

 
 

-                 return this;
-               }; // private methods
+             if (step === prestep) {
+               d[i0] = start;
+               d[i1] = stop;
+               return domain(d);
+             } else if (step > 0) {
+               start = Math.floor(start / step) * step;
+               stop = Math.ceil(stop / step) * step;
+             } else if (step < 0) {
+               start = Math.ceil(start * step) / step;
+               stop = Math.floor(stop * step) / step;
+             } else {
+               break;
+             }

 
 

-               /**
-                * Calculate the MD5 of a raw string
-                */
+             prestep = step;
+           }

 
 

+           return scale;
+         };

 
 

-               function rstr(s) {
-                 s = utf8 ? utf8Encode(s) : s;
-                 return binl2rstr(binl(rstr2binl(s), s.length * 8));
-               }
-               /**
-                * Calculate the HMAC-MD5, of a key and some data (raw strings)
-                */
+         return scale;
+       }
+       function linear() {
+         var scale = continuous();

 
 

+         scale.copy = function () {
+           return copy(scale, linear());
+         };

 
 

-               function rstr_hmac(key, data) {
-                 var bkey, ipad, opad, hash, i;
-                 key = utf8 ? utf8Encode(key) : key;
-                 data = utf8 ? utf8Encode(data) : data;
-                 bkey = rstr2binl(key);
+         initRange.apply(scale, arguments);
+         return linearish(scale);
+       }

 
 

-                 if (bkey.length > 16) {
-                   bkey = binl(bkey, key.length * 8);
-                 }
+       // eslint-disable-next-line es/no-math-expm1 -- safe
+       var $expm1 = Math.expm1;
+       var exp$1 = Math.exp;

 
 

-                 ipad = Array(16), opad = Array(16);
+       // `Math.expm1` method implementation
+       // https://tc39.es/ecma262/#sec-math.expm1
+       var mathExpm1 = (!$expm1
+         // Old FF bug
+         || $expm1(10) > 22025.465794806719 || $expm1(10) < 22025.4657948067165168
+         // Tor Browser bug
+         || $expm1(-2e-17) != -2e-17
+       ) ? function expm1(x) {
+         return (x = +x) == 0 ? x : x > -1e-6 && x < 1e-6 ? x + x * x / 2 : exp$1(x) - 1;
+       } : $expm1;

 
 

-                 for (i = 0; i < 16; i += 1) {
-                   ipad[i] = bkey[i] ^ 0x36363636;
-                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
-                 }
+       function quantize() {
+         var x0 = 0,
+             x1 = 1,
+             n = 1,
+             domain = [0.5],
+             range = [0, 1],
+             unknown;

 
 

-                 hash = binl(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
-                 return binl2rstr(binl(opad.concat(hash), 512 + 128));
-               }
-               /**
-                * Calculate the MD5 of an array of little-endian words, and a bit length.
-                */
+         function scale(x) {
+           return x != null && x <= x ? range[bisectRight(domain, x, 0, n)] : unknown;
+         }

 
 

+         function rescale() {
+           var i = -1;
+           domain = new Array(n);

 
 

-               function binl(x, len) {
-                 var i,
-                     olda,
-                     oldb,
-                     oldc,
-                     oldd,
-                     a = 1732584193,
-                     b = -271733879,
-                     c = -1732584194,
-                     d = 271733878;
-                 /* append padding */
+           while (++i < n) {
+             domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1);
+           }

 
 

-                 x[len >> 5] |= 0x80 << len % 32;
-                 x[(len + 64 >>> 9 << 4) + 14] = len;
+           return scale;
+         }

 
 

-                 for (i = 0; i < x.length; i += 16) {
-                   olda = a;
-                   oldb = b;
-                   oldc = c;
-                   oldd = d;
-                   a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
-                   d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
-                   c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
-                   b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
-                   a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
-                   d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
-                   c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
-                   b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
-                   a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
-                   d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
-                   c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
-                   b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
-                   a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
-                   d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
-                   c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
-                   b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
-                   a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
-                   d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
-                   c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
-                   b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
-                   a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
-                   d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
-                   c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
-                   b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
-                   a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
-                   d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
-                   c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
-                   b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
-                   a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
-                   d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
-                   c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
-                   b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
-                   a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
-                   d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
-                   c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
-                   b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
-                   a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
-                   d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
-                   c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
-                   b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
-                   a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
-                   d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
-                   c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
-                   b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
-                   a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
-                   d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
-                   c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
-                   b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
-                   a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
-                   d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
-                   c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
-                   b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
-                   a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
-                   d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
-                   c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
-                   b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
-                   a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
-                   d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
-                   c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
-                   b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
-                   a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
-                   d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
-                   c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
-                   b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
-                   a = safe_add(a, olda);
-                   b = safe_add(b, oldb);
-                   c = safe_add(c, oldc);
-                   d = safe_add(d, oldd);
-                 }
+         scale.domain = function (_) {
+           var _ref, _ref2;

 
 

-                 return Array(a, b, c, d);
-               }
-               /**
-                * These functions implement the four basic operations the algorithm uses.
-                */
+           return arguments.length ? ((_ref = _, _ref2 = _slicedToArray(_ref, 2), x0 = _ref2[0], x1 = _ref2[1], _ref), x0 = +x0, x1 = +x1, rescale()) : [x0, x1];
+         };

 
 

+         scale.range = function (_) {
+           return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice();
+         };

 
 

-               function md5_cmn(q, a, b, x, s, t) {
-                 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
-               }
+         scale.invertExtent = function (y) {
+           var i = range.indexOf(y);
+           return i < 0 ? [NaN, NaN] : i < 1 ? [x0, domain[0]] : i >= n ? [domain[n - 1], x1] : [domain[i - 1], domain[i]];
+         };

 
 

-               function md5_ff(a, b, c, d, x, s, t) {
-                 return md5_cmn(b & c | ~b & d, a, b, x, s, t);
-               }
+         scale.unknown = function (_) {
+           return arguments.length ? (unknown = _, scale) : scale;
+         };

 
 

-               function md5_gg(a, b, c, d, x, s, t) {
-                 return md5_cmn(b & d | c & ~d, a, b, x, s, t);
-               }
+         scale.thresholds = function () {
+           return domain.slice();
+         };

 
 

-               function md5_hh(a, b, c, d, x, s, t) {
-                 return md5_cmn(b ^ c ^ d, a, b, x, s, t);
-               }
+         scale.copy = function () {
+           return quantize().domain([x0, x1]).range(range).unknown(unknown);
+         };

 
 

-               function md5_ii(a, b, c, d, x, s, t) {
-                 return md5_cmn(c ^ (b | ~d), a, b, x, s, t);
-               }
-             },
+         return initRange.apply(linearish(scale), arguments);
+       }

 
 

-             /**
-              * @member Hashes
-              * @class Hashes.SHA1
-              * @param {Object} [config]
-              * @constructor
-              *
-              * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined in FIPS 180-1
-              * Version 2.2 Copyright Paul Johnston 2000 - 2009.
-              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
-              * See http://pajhome.org.uk/crypt/md5 for details.
-              */
-             SHA1: function SHA1(options) {
-               /**
-                * Private config properties. You may need to tweak these to be compatible with
-                * the server-side, but the defaults work in most cases.
-                * See {@link Hashes.MD5#method-setUpperCase} and {@link Hashes.SHA1#method-setUpperCase}
-                */
-               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
-                   // hexadecimal output case format. false - lowercase; true - uppercase
-               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
-                   // base-64 pad character. Defaults to '=' for strict RFC compliance
-               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true; // enable/disable utf8 encoding
-               // public methods
+       // https://github.com/tc39/proposal-string-pad-start-end
+       var toLength$2 = toLength$q;
+       var repeat$1 = stringRepeat;
+       var requireObjectCoercible$2 = requireObjectCoercible$e;

 
 

-               this.hex = function (s) {
-                 return rstr2hex(rstr(s), hexcase);
-               };
+       var ceil = Math.ceil;

 
 

-               this.b64 = function (s) {
-                 return rstr2b64(rstr(s), b64pad);
-               };
+       // `String.prototype.{ padStart, padEnd }` methods implementation
+       var createMethod = function (IS_END) {
+         return function ($this, maxLength, fillString) {
+           var S = String(requireObjectCoercible$2($this));
+           var stringLength = S.length;
+           var fillStr = fillString === undefined ? ' ' : String(fillString);
+           var intMaxLength = toLength$2(maxLength);
+           var fillLen, stringFiller;
+           if (intMaxLength <= stringLength || fillStr == '') return S;
+           fillLen = intMaxLength - stringLength;
+           stringFiller = repeat$1.call(fillStr, ceil(fillLen / fillStr.length));
+           if (stringFiller.length > fillLen) stringFiller = stringFiller.slice(0, fillLen);
+           return IS_END ? S + stringFiller : stringFiller + S;
+         };
+       };

 
 

-               this.any = function (s, e) {
-                 return rstr2any(rstr(s), e);
-               };
+       var stringPad = {
+         // `String.prototype.padStart` method
+         // https://tc39.es/ecma262/#sec-string.prototype.padstart
+         start: createMethod(false),
+         // `String.prototype.padEnd` method
+         // https://tc39.es/ecma262/#sec-string.prototype.padend
+         end: createMethod(true)
+       };

 
 

-               this.raw = function (s) {
-                 return rstr(s);
-               };
+       var fails$2 = fails$N;
+       var padStart = stringPad.start;

 
 

-               this.hex_hmac = function (k, d) {
-                 return rstr2hex(rstr_hmac(k, d));
-               };
+       var abs$1 = Math.abs;
+       var DatePrototype = Date.prototype;
+       var getTime = DatePrototype.getTime;
+       var nativeDateToISOString = DatePrototype.toISOString;

 
 

-               this.b64_hmac = function (k, d) {
-                 return rstr2b64(rstr_hmac(k, d), b64pad);
-               };
+       // `Date.prototype.toISOString` method implementation
+       // https://tc39.es/ecma262/#sec-date.prototype.toisostring
+       // PhantomJS / old WebKit fails here:
+       var dateToIsoString = (fails$2(function () {
+         return nativeDateToISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
+       }) || !fails$2(function () {
+         nativeDateToISOString.call(new Date(NaN));
+       })) ? function toISOString() {
+         if (!isFinite(getTime.call(this))) throw RangeError('Invalid time value');
+         var date = this;
+         var year = date.getUTCFullYear();
+         var milliseconds = date.getUTCMilliseconds();
+         var sign = year < 0 ? '-' : year > 9999 ? '+' : '';
+         return sign + padStart(abs$1(year), sign ? 6 : 4, 0) +
+           '-' + padStart(date.getUTCMonth() + 1, 2, 0) +
+           '-' + padStart(date.getUTCDate(), 2, 0) +
+           'T' + padStart(date.getUTCHours(), 2, 0) +
+           ':' + padStart(date.getUTCMinutes(), 2, 0) +
+           ':' + padStart(date.getUTCSeconds(), 2, 0) +
+           '.' + padStart(milliseconds, 3, 0) +
+           'Z';
+       } : nativeDateToISOString;

 
 

-               this.any_hmac = function (k, d, e) {
-                 return rstr2any(rstr_hmac(k, d), e);
-               };
-               /**
-                * Perform a simple self-test to see if the VM is working
-                * @return {String} Hexadecimal hash sample
-                * @public
-                */
+       var $$6 = _export;
+       var toISOString = dateToIsoString;

 
 

+       // `Date.prototype.toISOString` method
+       // https://tc39.es/ecma262/#sec-date.prototype.toisostring
+       // PhantomJS / old WebKit has a broken implementations
+       $$6({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== toISOString }, {
+         toISOString: toISOString
+       });

 
 

-               this.vm_test = function () {
-                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
-               };
-               /**
-                * @description Enable/disable uppercase hexadecimal returned string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+       function behaviorBreathe() {
+         var duration = 800;
+         var steps = 4;
+         var selector = '.selected.shadow, .selected .shadow';

 
 

+         var _selected = select(null);

 
 

-               this.setUpperCase = function (a) {
-                 if (typeof a === 'boolean') {
-                   hexcase = a;
-                 }
+         var _classed = '';
+         var _params = {};
+         var _done = false;

 
 

-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {string} Pad
-                * @return {Object} this
-                * @public
-                */
+         var _timer;

 
 

+         function ratchetyInterpolator(a, b, steps, units) {
+           a = parseFloat(a);
+           b = parseFloat(b);
+           var sample = quantize().domain([0, 1]).range(d3_quantize(d3_interpolateNumber(a, b), steps));
+           return function (t) {
+             return String(sample(t)) + (units || '');
+           };
+         }

 
 

-               this.setPad = function (a) {
-                 b64pad = a || b64pad;
-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+         function reset(selection) {
+           selection.style('stroke-opacity', null).style('stroke-width', null).style('fill-opacity', null).style('r', null);
+         }

 
 

+         function setAnimationParams(transition, fromTo) {
+           var toFrom = fromTo === 'from' ? 'to' : 'from';
+           transition.styleTween('stroke-opacity', function (d) {
+             return ratchetyInterpolator(_params[d.id][toFrom].opacity, _params[d.id][fromTo].opacity, steps);
+           }).styleTween('stroke-width', function (d) {
+             return ratchetyInterpolator(_params[d.id][toFrom].width, _params[d.id][fromTo].width, steps, 'px');
+           }).styleTween('fill-opacity', function (d) {
+             return ratchetyInterpolator(_params[d.id][toFrom].opacity, _params[d.id][fromTo].opacity, steps);
+           }).styleTween('r', function (d) {
+             return ratchetyInterpolator(_params[d.id][toFrom].width, _params[d.id][fromTo].width, steps, 'px');
+           });
+         }

 
 

-               this.setUTF8 = function (a) {
-                 if (typeof a === 'boolean') {
-                   utf8 = a;
-                 }
+         function calcAnimationParams(selection) {
+           selection.call(reset).each(function (d) {
+             var s = select(this);
+             var tag = s.node().tagName;
+             var p = {
+               'from': {},
+               'to': {}
+             };
+             var opacity;
+             var width; // determine base opacity and width

 
 

-                 return this;
-               }; // private methods
+             if (tag === 'circle') {
+               opacity = parseFloat(s.style('fill-opacity') || 0.5);
+               width = parseFloat(s.style('r') || 15.5);
+             } else {
+               opacity = parseFloat(s.style('stroke-opacity') || 0.7);
+               width = parseFloat(s.style('stroke-width') || 10);
+             } // calculate from/to interpolation params..

 
 

-               /**
-                * Calculate the SHA-512 of a raw string
-                */

 
 

+             p.tag = tag;
+             p.from.opacity = opacity * 0.6;
+             p.to.opacity = opacity * 1.25;
+             p.from.width = width * 0.7;
+             p.to.width = width * (tag === 'circle' ? 1.5 : 1);
+             _params[d.id] = p;
+           });
+         }

 
 

-               function rstr(s) {
-                 s = utf8 ? utf8Encode(s) : s;
-                 return binb2rstr(binb(rstr2binb(s), s.length * 8));
-               }
-               /**
-                * Calculate the HMAC-SHA1 of a key and some data (raw strings)
-                */
+         function run(surface, fromTo) {
+           var toFrom = fromTo === 'from' ? 'to' : 'from';
+           var currSelected = surface.selectAll(selector);
+           var currClassed = surface.attr('class');

 
 

+           if (_done || currSelected.empty()) {
+             _selected.call(reset);

 
 

-               function rstr_hmac(key, data) {
-                 var bkey, ipad, opad, i, hash;
-                 key = utf8 ? utf8Encode(key) : key;
-                 data = utf8 ? utf8Encode(data) : data;
-                 bkey = rstr2binb(key);
+             _selected = select(null);
+             return;
+           }

 
 

-                 if (bkey.length > 16) {
-                   bkey = binb(bkey, key.length * 8);
-                 }
+           if (!fastDeepEqual(currSelected.data(), _selected.data()) || currClassed !== _classed) {
+             _selected.call(reset);

 
 

-                 ipad = Array(16), opad = Array(16);
+             _classed = currClassed;
+             _selected = currSelected.call(calcAnimationParams);
+           }

 
 

-                 for (i = 0; i < 16; i += 1) {
-                   ipad[i] = bkey[i] ^ 0x36363636;
-                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
-                 }
+           var didCallNextRun = false;

 
 

-                 hash = binb(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
-                 return binb2rstr(binb(opad.concat(hash), 512 + 160));
-               }
-               /**
-                * Calculate the SHA-1 of an array of big-endian words, and a bit length
-                */
+           _selected.transition().duration(duration).call(setAnimationParams, fromTo).on('end', function () {
+             // `end` event is called for each selected element, but we want
+             // it to run only once
+             if (!didCallNextRun) {
+               surface.call(run, toFrom);
+               didCallNextRun = true;
+             } // if entity was deselected, remove breathe styling

 
 
 
 

-               function binb(x, len) {
-                 var i,
-                     j,
-                     t,
-                     olda,
-                     oldb,
-                     oldc,
-                     oldd,
-                     olde,
-                     w = Array(80),
-                     a = 1732584193,
-                     b = -271733879,
-                     c = -1732584194,
-                     d = 271733878,
-                     e = -1009589776;
-                 /* append padding */
+             if (!select(this).classed('selected')) {
+               reset(select(this));
+             }
+           });
+         }

 
 

-                 x[len >> 5] |= 0x80 << 24 - len % 32;
-                 x[(len + 64 >> 9 << 4) + 15] = len;
+         function behavior(surface) {
+           _done = false;
+           _timer = timer(function () {
+             // wait for elements to actually become selected
+             if (surface.selectAll(selector).empty()) {
+               return false;
+             }

 
 

-                 for (i = 0; i < x.length; i += 16) {
-                   olda = a;
-                   oldb = b;
-                   oldc = c;
-                   oldd = d;
-                   olde = e;
+             surface.call(run, 'from');

 
 

-                   for (j = 0; j < 80; j += 1) {
-                     if (j < 16) {
-                       w[j] = x[i + j];
-                     } else {
-                       w[j] = bit_rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
-                     }
+             _timer.stop();

 
 

-                     t = safe_add(safe_add(bit_rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
-                     e = d;
-                     d = c;
-                     c = bit_rol(b, 30);
-                     b = a;
-                     a = t;
-                   }
+             return true;
+           }, 20);
+         }

 
 

-                   a = safe_add(a, olda);
-                   b = safe_add(b, oldb);
-                   c = safe_add(c, oldc);
-                   d = safe_add(d, oldd);
-                   e = safe_add(e, olde);
-                 }
+         behavior.restartIfNeeded = function (surface) {
+           if (_selected.empty()) {
+             surface.call(run, 'from');

 
 

-                 return Array(a, b, c, d, e);
-               }
-               /**
-                * Perform the appropriate triplet combination function for the current
-                * iteration
-                */
+             if (_timer) {
+               _timer.stop();
+             }
+           }
+         };

 
 

+         behavior.off = function () {
+           _done = true;

 
 

-               function sha1_ft(t, b, c, d) {
-                 if (t < 20) {
-                   return b & c | ~b & d;
-                 }
+           if (_timer) {
+             _timer.stop();
+           }

 
 

-                 if (t < 40) {
-                   return b ^ c ^ d;
-                 }
+           _selected.interrupt().call(reset);
+         };

 
 

-                 if (t < 60) {
-                   return b & c | b & d | c & d;
-                 }
+         return behavior;
+       }

 
 

-                 return b ^ c ^ d;
-               }
-               /**
-                * Determine the appropriate additive constant for the current iteration
-                */
+       /* Creates a keybinding behavior for an operation */
+       function behaviorOperation(context) {
+         var _operation;

 
 

+         function keypress(d3_event) {
+           // prevent operations during low zoom selection
+           if (!context.map().withinEditableZoom()) return;
+           if (_operation.availableForKeypress && !_operation.availableForKeypress()) return;
+           d3_event.preventDefault();

 
 

-               function sha1_kt(t) {
-                 return t < 20 ? 1518500249 : t < 40 ? 1859775393 : t < 60 ? -1894007588 : -899497514;
-               }
-             },
+           var disabled = _operation.disabled();

 
 

-             /**
-              * @class Hashes.SHA256
-              * @param {config}
-              *
-              * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined in FIPS 180-2
-              * Version 2.2 Copyright Angel Marin, Paul Johnston 2000 - 2009.
-              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
-              * See http://pajhome.org.uk/crypt/md5 for details.
-              * Also http://anmar.eu.org/projects/jssha2/
-              */
-             SHA256: function SHA256(options) {
-               /**
-                * Private properties configuration variables. You may need to tweak these to be compatible with
-                * the server-side, but the defaults work in most cases.
-                * @see this.setUpperCase() method
-                * @see this.setPad() method
-                */
-               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
-                   // hexadecimal output case format. false - lowercase; true - uppercase  */
-               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
+           if (disabled) {
+             context.ui().flash.duration(4000).iconName('#iD-operation-' + _operation.id).iconClass('operation disabled').label(_operation.tooltip)();
+           } else {
+             context.ui().flash.duration(2000).iconName('#iD-operation-' + _operation.id).iconClass('operation').label(_operation.annotation() || _operation.title)();
+             if (_operation.point) _operation.point(null);

 
 

-               /* base-64 pad character. Default '=' for strict RFC compliance   */
-               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,
+             _operation();
+           }
+         }

 
 

-               /* enable/disable utf8 encoding */
-               sha256_K;
-               /* privileged (public) methods */
+         function behavior() {
+           if (_operation && _operation.available()) {
+             context.keybinding().on(_operation.keys, keypress);
+           }

 
 

-               this.hex = function (s) {
-                 return rstr2hex(rstr(s, utf8));
-               };
+           return behavior;
+         }

 
 

-               this.b64 = function (s) {
-                 return rstr2b64(rstr(s, utf8), b64pad);
-               };
+         behavior.off = function () {
+           context.keybinding().off(_operation.keys);
+         };

 
 

-               this.any = function (s, e) {
-                 return rstr2any(rstr(s, utf8), e);
-               };
+         behavior.which = function (_) {
+           if (!arguments.length) return _operation;
+           _operation = _;
+           return behavior;
+         };

 
 

-               this.raw = function (s) {
-                 return rstr(s, utf8);
-               };
+         return behavior;
+       }

 
 

-               this.hex_hmac = function (k, d) {
-                 return rstr2hex(rstr_hmac(k, d));
-               };
+       function operationCircularize(context, selectedIDs) {
+         var _extent;

 
 

-               this.b64_hmac = function (k, d) {
-                 return rstr2b64(rstr_hmac(k, d), b64pad);
-               };
+         var _actions = selectedIDs.map(getAction).filter(Boolean);

 
 

-               this.any_hmac = function (k, d, e) {
-                 return rstr2any(rstr_hmac(k, d), e);
-               };
-               /**
-                * Perform a simple self-test to see if the VM is working
-                * @return {String} Hexadecimal hash sample
-                * @public
-                */
+         var _amount = _actions.length === 1 ? 'single' : 'multiple';

 
 

+         var _coords = utilGetAllNodes(selectedIDs, context.graph()).map(function (n) {
+           return n.loc;
+         });

 
 

-               this.vm_test = function () {
-                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
-               };
-               /**
-                * Enable/disable uppercase hexadecimal returned string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+         function getAction(entityID) {
+           var entity = context.entity(entityID);
+           if (entity.type !== 'way' || new Set(entity.nodes).size <= 1) return null;

 
 

+           if (!_extent) {
+             _extent = entity.extent(context.graph());
+           } else {
+             _extent = _extent.extend(entity.extent(context.graph()));
+           }

 
 

-               this.setUpperCase = function (a) {
-                 if (typeof a === 'boolean') {
-                   hexcase = a;
-                 }
+           return actionCircularize(entityID, context.projection);
+         }

 
 

-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {string} Pad
-                * @return {Object} this
-                * @public
-                */
+         var operation = function operation() {
+           if (!_actions.length) return;

 
 

+           var combinedAction = function combinedAction(graph, t) {
+             _actions.forEach(function (action) {
+               if (!action.disabled(graph)) {
+                 graph = action(graph, t);
+               }
+             });

 
 

-               this.setPad = function (a) {
-                 b64pad = a || b64pad;
-                 return this;
-               };
-               /**
-                * Defines a base64 pad string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+             return graph;
+           };

 
 

+           combinedAction.transitionable = true;
+           context.perform(combinedAction, operation.annotation());
+           window.setTimeout(function () {
+             context.validator().validate();
+           }, 300); // after any transition
+         };

 
 

-               this.setUTF8 = function (a) {
-                 if (typeof a === 'boolean') {
-                   utf8 = a;
-                 }
+         operation.available = function () {
+           return _actions.length && selectedIDs.length === _actions.length;
+         }; // don't cache this because the visible extent could change

 
 

-                 return this;
-               }; // private methods

 
 

-               /**
-                * Calculate the SHA-512 of a raw string
-                */
+         operation.disabled = function () {
+           if (!_actions.length) return '';

 
 

+           var actionDisableds = _actions.map(function (action) {
+             return action.disabled(context.graph());
+           }).filter(Boolean);

 
 

-               function rstr(s, utf8) {
-                 s = utf8 ? utf8Encode(s) : s;
-                 return binb2rstr(binb(rstr2binb(s), s.length * 8));
-               }
-               /**
-                * Calculate the HMAC-sha256 of a key and some data (raw strings)
-                */
+           if (actionDisableds.length === _actions.length) {
+             // none of the features can be circularized
+             if (new Set(actionDisableds).size > 1) {
+               return 'multiple_blockers';
+             }

 
 

+             return actionDisableds[0];
+           } else if (_extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           }

 
 

-               function rstr_hmac(key, data) {
-                 key = utf8 ? utf8Encode(key) : key;
-                 data = utf8 ? utf8Encode(data) : data;
-                 var hash,
-                     i = 0,
-                     bkey = rstr2binb(key),
-                     ipad = Array(16),
-                     opad = Array(16);
+           return false;

 
 

-                 if (bkey.length > 16) {
-                   bkey = binb(bkey, key.length * 8);
-                 }
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-                 for (; i < 16; i += 1) {
-                   ipad[i] = bkey[i] ^ 0x36363636;
-                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
-                 }
+             if (osm) {
+               var missing = _coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-                 hash = binb(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
-                 return binb2rstr(binb(opad.concat(hash), 512 + 256));
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;

                }
                }

-               /*
-                * Main sha256 function, with its support functions
-                */
+             }

 
 

+             return false;
+           }
+         };

 
 

-               function sha256_S(X, n) {
-                 return X >>> n | X << 32 - n;
-               }
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.circularize.' + disable + '.' + _amount) : _t('operations.circularize.description.' + _amount);
+         };

 
 

-               function sha256_R(X, n) {
-                 return X >>> n;
-               }
+         operation.annotation = function () {
+           return _t('operations.circularize.annotation.feature', {
+             n: _actions.length
+           });
+         };

 
 

-               function sha256_Ch(x, y, z) {
-                 return x & y ^ ~x & z;
-               }
+         operation.id = 'circularize';
+         operation.keys = [_t('operations.circularize.key')];
+         operation.title = _t('operations.circularize.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-               function sha256_Maj(x, y, z) {
-                 return x & y ^ x & z ^ y & z;
-               }
+       // For example, ⌘Z -> Ctrl+Z

 
 

-               function sha256_Sigma0256(x) {
-                 return sha256_S(x, 2) ^ sha256_S(x, 13) ^ sha256_S(x, 22);
-               }
+       var uiCmd = function uiCmd(code) {
+         var detected = utilDetect();

 
 

-               function sha256_Sigma1256(x) {
-                 return sha256_S(x, 6) ^ sha256_S(x, 11) ^ sha256_S(x, 25);
-               }
+         if (detected.os === 'mac') {
+           return code;
+         }

 
 

-               function sha256_Gamma0256(x) {
-                 return sha256_S(x, 7) ^ sha256_S(x, 18) ^ sha256_R(x, 3);
-               }
+         if (detected.os === 'win') {
+           if (code === '⌘⇧Z') return 'Ctrl+Y';
+         }

 
 

-               function sha256_Gamma1256(x) {
-                 return sha256_S(x, 17) ^ sha256_S(x, 19) ^ sha256_R(x, 10);
-               }
+         var result = '',
+             replacements = {
+           '⌘': 'Ctrl',
+           '⇧': 'Shift',
+           '⌥': 'Alt',
+           '⌫': 'Backspace',
+           '⌦': 'Delete'
+         };

 
 

-               sha256_K = [1116352408, 1899447441, -1245643825, -373957723, 961987163, 1508970993, -1841331548, -1424204075, -670586216, 310598401, 607225278, 1426881987, 1925078388, -2132889090, -1680079193, -1046744716, -459576895, -272742522, 264347078, 604807628, 770255983, 1249150122, 1555081692, 1996064986, -1740746414, -1473132947, -1341970488, -1084653625, -958395405, -710438585, 113926993, 338241895, 666307205, 773529912, 1294757372, 1396182291, 1695183700, 1986661051, -2117940946, -1838011259, -1564481375, -1474664885, -1035236496, -949202525, -778901479, -694614492, -200395387, 275423344, 430227734, 506948616, 659060556, 883997877, 958139571, 1322822218, 1537002063, 1747873779, 1955562222, 2024104815, -2067236844, -1933114872, -1866530822, -1538233109, -1090935817, -965641998];
+         for (var i = 0; i < code.length; i++) {
+           if (code[i] in replacements) {
+             result += replacements[code[i]] + (i < code.length - 1 ? '+' : '');
+           } else {
+             result += code[i];
+           }
+         }

 
 

-               function binb(m, l) {
-                 var HASH = [1779033703, -1150833019, 1013904242, -1521486534, 1359893119, -1694144372, 528734635, 1541459225];
-                 var W = new Array(64);
-                 var a, b, c, d, e, f, g, h;
-                 var i, j, T1, T2;
-                 /* append padding */
+         return result;
+       }; // return a display-focused string for a given keyboard code

 
 

-                 m[l >> 5] |= 0x80 << 24 - l % 32;
-                 m[(l + 64 >> 9 << 4) + 15] = l;
+       uiCmd.display = function (code) {
+         if (code.length !== 1) return code;
+         var detected = utilDetect();
+         var mac = detected.os === 'mac';
+         var replacements = {
+           '⌘': mac ? '⌘ ' + _t('shortcuts.key.cmd') : _t('shortcuts.key.ctrl'),
+           '⇧': mac ? '⇧ ' + _t('shortcuts.key.shift') : _t('shortcuts.key.shift'),
+           '⌥': mac ? '⌥ ' + _t('shortcuts.key.option') : _t('shortcuts.key.alt'),
+           '⌃': mac ? '⌃ ' + _t('shortcuts.key.ctrl') : _t('shortcuts.key.ctrl'),
+           '⌫': mac ? '⌫ ' + _t('shortcuts.key.delete') : _t('shortcuts.key.backspace'),
+           '⌦': mac ? '⌦ ' + _t('shortcuts.key.del') : _t('shortcuts.key.del'),
+           '↖': mac ? '↖ ' + _t('shortcuts.key.pgup') : _t('shortcuts.key.pgup'),
+           '↘': mac ? '↘ ' + _t('shortcuts.key.pgdn') : _t('shortcuts.key.pgdn'),
+           '⇞': mac ? '⇞ ' + _t('shortcuts.key.home') : _t('shortcuts.key.home'),
+           '⇟': mac ? '⇟ ' + _t('shortcuts.key.end') : _t('shortcuts.key.end'),
+           '↵': mac ? '⏎ ' + _t('shortcuts.key.return') : _t('shortcuts.key.enter'),
+           '⎋': mac ? '⎋ ' + _t('shortcuts.key.esc') : _t('shortcuts.key.esc'),
+           '☰': mac ? '☰ ' + _t('shortcuts.key.menu') : _t('shortcuts.key.menu')
+         };
+         return replacements[code] || code;
+       };

 
 

-                 for (i = 0; i < m.length; i += 16) {
-                   a = HASH[0];
-                   b = HASH[1];
-                   c = HASH[2];
-                   d = HASH[3];
-                   e = HASH[4];
-                   f = HASH[5];
-                   g = HASH[6];
-                   h = HASH[7];
+       function operationDelete(context, selectedIDs) {
+         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
+         var action = actionDeleteMultiple(selectedIDs);
+         var nodes = utilGetAllNodes(selectedIDs, context.graph());
+         var coords = nodes.map(function (n) {
+           return n.loc;
+         });
+         var extent = utilTotalExtent(selectedIDs, context.graph());

 
 

-                   for (j = 0; j < 64; j += 1) {
-                     if (j < 16) {
-                       W[j] = m[j + i];
-                     } else {
-                       W[j] = safe_add(safe_add(safe_add(sha256_Gamma1256(W[j - 2]), W[j - 7]), sha256_Gamma0256(W[j - 15])), W[j - 16]);
-                     }
+         var operation = function operation() {
+           var nextSelectedID;
+           var nextSelectedLoc;

 
 

-                     T1 = safe_add(safe_add(safe_add(safe_add(h, sha256_Sigma1256(e)), sha256_Ch(e, f, g)), sha256_K[j]), W[j]);
-                     T2 = safe_add(sha256_Sigma0256(a), sha256_Maj(a, b, c));
-                     h = g;
-                     g = f;
-                     f = e;
-                     e = safe_add(d, T1);
-                     d = c;
-                     c = b;
-                     b = a;
-                     a = safe_add(T1, T2);
-                   }
+           if (selectedIDs.length === 1) {
+             var id = selectedIDs[0];
+             var entity = context.entity(id);
+             var geometry = entity.geometry(context.graph());
+             var parents = context.graph().parentWays(entity);
+             var parent = parents[0]; // Select the next closest node in the way.

 
 

-                   HASH[0] = safe_add(a, HASH[0]);
-                   HASH[1] = safe_add(b, HASH[1]);
-                   HASH[2] = safe_add(c, HASH[2]);
-                   HASH[3] = safe_add(d, HASH[3]);
-                   HASH[4] = safe_add(e, HASH[4]);
-                   HASH[5] = safe_add(f, HASH[5]);
-                   HASH[6] = safe_add(g, HASH[6]);
-                   HASH[7] = safe_add(h, HASH[7]);
-                 }
+             if (geometry === 'vertex') {
+               var nodes = parent.nodes;
+               var i = nodes.indexOf(id);

 
 

-                 return HASH;
+               if (i === 0) {
+                 i++;
+               } else if (i === nodes.length - 1) {
+                 i--;
+               } else {
+                 var a = geoSphericalDistance(entity.loc, context.entity(nodes[i - 1]).loc);
+                 var b = geoSphericalDistance(entity.loc, context.entity(nodes[i + 1]).loc);
+                 i = a < b ? i - 1 : i + 1;

                }
                }

-             },

 
 

-             /**
-              * @class Hashes.SHA512
-              * @param {config}
-              *
-              * A JavaScript implementation of the Secure Hash Algorithm, SHA-512, as defined in FIPS 180-2
-              * Version 2.2 Copyright Anonymous Contributor, Paul Johnston 2000 - 2009.
-              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
-              * See http://pajhome.org.uk/crypt/md5 for details.
-              */
-             SHA512: function SHA512(options) {
-               /**
-                * Private properties configuration variables. You may need to tweak these to be compatible with
-                * the server-side, but the defaults work in most cases.
-                * @see this.setUpperCase() method
-                * @see this.setPad() method
-                */
-               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
+               nextSelectedID = nodes[i];
+               nextSelectedLoc = context.entity(nextSelectedID).loc;
+             }
+           }

 
 

-               /* hexadecimal output case format. false - lowercase; true - uppercase  */
-               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
+           context.perform(action, operation.annotation());
+           context.validator().validate();

 
 

-               /* base-64 pad character. Default '=' for strict RFC compliance   */
-               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,
+           if (nextSelectedID && nextSelectedLoc) {
+             if (context.hasEntity(nextSelectedID)) {
+               context.enter(modeSelect(context, [nextSelectedID]).follow(true));
+             } else {
+               context.map().centerEase(nextSelectedLoc);
+               context.enter(modeBrowse(context));
+             }
+           } else {
+             context.enter(modeBrowse(context));
+           }
+         };

 
 

-               /* enable/disable utf8 encoding */
-               sha512_k;
-               /* privileged (public) methods */
+         operation.available = function () {
+           return true;
+         };

 
 

-               this.hex = function (s) {
-                 return rstr2hex(rstr(s));
-               };
+         operation.disabled = function () {
+           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           } else if (selectedIDs.some(protectedMember)) {
+             return 'part_of_relation';
+           } else if (selectedIDs.some(incompleteRelation)) {
+             return 'incomplete_relation';
+           } else if (selectedIDs.some(hasWikidataTag)) {
+             return 'has_wikidata_tag';
+           }

 
 

-               this.b64 = function (s) {
-                 return rstr2b64(rstr(s), b64pad);
-               };
+           return false;

 
 

-               this.any = function (s, e) {
-                 return rstr2any(rstr(s), e);
-               };
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-               this.raw = function (s) {
-                 return rstr(s);
-               };
+             if (osm) {
+               var missing = coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-               this.hex_hmac = function (k, d) {
-                 return rstr2hex(rstr_hmac(k, d));
-               };
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }
+             }

 
 

-               this.b64_hmac = function (k, d) {
-                 return rstr2b64(rstr_hmac(k, d), b64pad);
-               };
+             return false;
+           }

 
 

-               this.any_hmac = function (k, d, e) {
-                 return rstr2any(rstr_hmac(k, d), e);
-               };
-               /**
-                * Perform a simple self-test to see if the VM is working
-                * @return {String} Hexadecimal hash sample
-                * @public
-                */
+           function hasWikidataTag(id) {
+             var entity = context.entity(id);
+             return entity.tags.wikidata && entity.tags.wikidata.trim().length > 0;
+           }

 
 

+           function incompleteRelation(id) {
+             var entity = context.entity(id);
+             return entity.type === 'relation' && !entity.isComplete(context.graph());
+           }

 
 

-               this.vm_test = function () {
-                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
-               };
-               /**
-                * @description Enable/disable uppercase hexadecimal returned string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+           function protectedMember(id) {
+             var entity = context.entity(id);
+             if (entity.type !== 'way') return false;
+             var parents = context.graph().parentRelations(entity);

 
 

+             for (var i = 0; i < parents.length; i++) {
+               var parent = parents[i];
+               var type = parent.tags.type;
+               var role = parent.memberById(id).role || 'outer';

 
 

-               this.setUpperCase = function (a) {
-                 if (typeof a === 'boolean') {
-                   hexcase = a;
-                 }
+               if (type === 'route' || type === 'boundary' || type === 'multipolygon' && role === 'outer') {
+                 return true;
+               }
+             }

 
 

-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {string} Pad
-                * @return {Object} this
-                * @public
-                */
+             return false;
+           }
+         };

 
 

+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.delete.' + disable + '.' + multi) : _t('operations.delete.description.' + multi);
+         };

 
 

-               this.setPad = function (a) {
-                 b64pad = a || b64pad;
-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+         operation.annotation = function () {
+           return selectedIDs.length === 1 ? _t('operations.delete.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.delete.annotation.feature', {
+             n: selectedIDs.length
+           });
+         };
+
+         operation.id = 'delete';
+         operation.keys = [uiCmd('⌘⌫'), uiCmd('⌘⌦'), uiCmd('⌦')];
+         operation.title = _t('operations.delete.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

+       function operationOrthogonalize(context, selectedIDs) {
+         var _extent;

 
 

-               this.setUTF8 = function (a) {
-                 if (typeof a === 'boolean') {
-                   utf8 = a;
-                 }
+         var _type;

 
 

-                 return this;
-               };
-               /* private methods */
+         var _actions = selectedIDs.map(chooseAction).filter(Boolean);

 
 

-               /**
-                * Calculate the SHA-512 of a raw string
-                */
+         var _amount = _actions.length === 1 ? 'single' : 'multiple';

 
 

+         var _coords = utilGetAllNodes(selectedIDs, context.graph()).map(function (n) {
+           return n.loc;
+         });

 
 

-               function rstr(s) {
-                 s = utf8 ? utf8Encode(s) : s;
-                 return binb2rstr(binb(rstr2binb(s), s.length * 8));
-               }
-               /*
-                * Calculate the HMAC-SHA-512 of a key and some data (raw strings)
-                */
+         function chooseAction(entityID) {
+           var entity = context.entity(entityID);
+           var geometry = entity.geometry(context.graph());

 
 

+           if (!_extent) {
+             _extent = entity.extent(context.graph());
+           } else {
+             _extent = _extent.extend(entity.extent(context.graph()));
+           } // square a line/area

 
 

-               function rstr_hmac(key, data) {
-                 key = utf8 ? utf8Encode(key) : key;
-                 data = utf8 ? utf8Encode(data) : data;
-                 var hash,
-                     i = 0,
-                     bkey = rstr2binb(key),
-                     ipad = Array(32),
-                     opad = Array(32);

 
 

-                 if (bkey.length > 32) {
-                   bkey = binb(bkey, key.length * 8);
-                 }
+           if (entity.type === 'way' && new Set(entity.nodes).size > 2) {
+             if (_type && _type !== 'feature') return null;
+             _type = 'feature';
+             return actionOrthogonalize(entityID, context.projection); // square a single vertex
+           } else if (geometry === 'vertex') {
+             if (_type && _type !== 'corner') return null;
+             _type = 'corner';
+             var graph = context.graph();
+             var parents = graph.parentWays(entity);

 
 

-                 for (; i < 32; i += 1) {
-                   ipad[i] = bkey[i] ^ 0x36363636;
-                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
-                 }
+             if (parents.length === 1) {
+               var way = parents[0];

 
 

-                 hash = binb(ipad.concat(rstr2binb(data)), 1024 + data.length * 8);
-                 return binb2rstr(binb(opad.concat(hash), 1024 + 512));
+               if (way.nodes.indexOf(entityID) !== -1) {
+                 return actionOrthogonalize(way.id, context.projection, entityID);

                }
                }

-               /**
-                * Calculate the SHA-512 of an array of big-endian dwords, and a bit length
-                */
+             }
+           }

 
 

+           return null;
+         }

 
 

-               function binb(x, len) {
-                 var j,
-                     i,
-                     l,
-                     W = new Array(80),
-                     hash = new Array(16),
-                     //Initial hash values
-                 H = [new int64(0x6a09e667, -205731576), new int64(-1150833019, -2067093701), new int64(0x3c6ef372, -23791573), new int64(-1521486534, 0x5f1d36f1), new int64(0x510e527f, -1377402159), new int64(-1694144372, 0x2b3e6c1f), new int64(0x1f83d9ab, -79577749), new int64(0x5be0cd19, 0x137e2179)],
-                     T1 = new int64(0, 0),
-                     T2 = new int64(0, 0),
-                     a = new int64(0, 0),
-                     b = new int64(0, 0),
-                     c = new int64(0, 0),
-                     d = new int64(0, 0),
-                     e = new int64(0, 0),
-                     f = new int64(0, 0),
-                     g = new int64(0, 0),
-                     h = new int64(0, 0),
-                     //Temporary variables not specified by the document
-                 s0 = new int64(0, 0),
-                     s1 = new int64(0, 0),
-                     Ch = new int64(0, 0),
-                     Maj = new int64(0, 0),
-                     r1 = new int64(0, 0),
-                     r2 = new int64(0, 0),
-                     r3 = new int64(0, 0);
+         var operation = function operation() {
+           if (!_actions.length) return;

 
 

-                 if (sha512_k === undefined) {
-                   //SHA512 constants
-                   sha512_k = [new int64(0x428a2f98, -685199838), new int64(0x71374491, 0x23ef65cd), new int64(-1245643825, -330482897), new int64(-373957723, -2121671748), new int64(0x3956c25b, -213338824), new int64(0x59f111f1, -1241133031), new int64(-1841331548, -1357295717), new int64(-1424204075, -630357736), new int64(-670586216, -1560083902), new int64(0x12835b01, 0x45706fbe), new int64(0x243185be, 0x4ee4b28c), new int64(0x550c7dc3, -704662302), new int64(0x72be5d74, -226784913), new int64(-2132889090, 0x3b1696b1), new int64(-1680079193, 0x25c71235), new int64(-1046744716, -815192428), new int64(-459576895, -1628353838), new int64(-272742522, 0x384f25e3), new int64(0xfc19dc6, -1953704523), new int64(0x240ca1cc, 0x77ac9c65), new int64(0x2de92c6f, 0x592b0275), new int64(0x4a7484aa, 0x6ea6e483), new int64(0x5cb0a9dc, -1119749164), new int64(0x76f988da, -2096016459), new int64(-1740746414, -295247957), new int64(-1473132947, 0x2db43210), new int64(-1341970488, -1728372417), new int64(-1084653625, -1091629340), new int64(-958395405, 0x3da88fc2), new int64(-710438585, -1828018395), new int64(0x6ca6351, -536640913), new int64(0x14292967, 0xa0e6e70), new int64(0x27b70a85, 0x46d22ffc), new int64(0x2e1b2138, 0x5c26c926), new int64(0x4d2c6dfc, 0x5ac42aed), new int64(0x53380d13, -1651133473), new int64(0x650a7354, -1951439906), new int64(0x766a0abb, 0x3c77b2a8), new int64(-2117940946, 0x47edaee6), new int64(-1838011259, 0x1482353b), new int64(-1564481375, 0x4cf10364), new int64(-1474664885, -1136513023), new int64(-1035236496, -789014639), new int64(-949202525, 0x654be30), new int64(-778901479, -688958952), new int64(-694614492, 0x5565a910), new int64(-200395387, 0x5771202a), new int64(0x106aa070, 0x32bbd1b8), new int64(0x19a4c116, -1194143544), new int64(0x1e376c08, 0x5141ab53), new int64(0x2748774c, -544281703), new int64(0x34b0bcb5, -509917016), new int64(0x391c0cb3, -976659869), new int64(0x4ed8aa4a, -482243893), new int64(0x5b9cca4f, 0x7763e373), new int64(0x682e6ff3, -692930397), new int64(0x748f82ee, 0x5defb2fc), new int64(0x78a5636f, 0x43172f60), new int64(-2067236844, -1578062990), new int64(-1933114872, 0x1a6439ec), new int64(-1866530822, 0x23631e28), new int64(-1538233109, -561857047), new int64(-1090935817, -1295615723), new int64(-965641998, -479046869), new int64(-903397682, -366583396), new int64(-779700025, 0x21c0c207), new int64(-354779690, -840897762), new int64(-176337025, -294727304), new int64(0x6f067aa, 0x72176fba), new int64(0xa637dc5, -1563912026), new int64(0x113f9804, -1090974290), new int64(0x1b710b35, 0x131c471b), new int64(0x28db77f5, 0x23047d84), new int64(0x32caab7b, 0x40c72493), new int64(0x3c9ebe0a, 0x15c9bebc), new int64(0x431d67c4, -1676669620), new int64(0x4cc5d4be, -885112138), new int64(0x597f299c, -60457430), new int64(0x5fcb6fab, 0x3ad6faec), new int64(0x6c44198c, 0x4a475817)];
-                 }
+           var combinedAction = function combinedAction(graph, t) {
+             _actions.forEach(function (action) {
+               if (!action.disabled(graph)) {
+                 graph = action(graph, t);
+               }
+             });

 
 

-                 for (i = 0; i < 80; i += 1) {
-                   W[i] = new int64(0, 0);
-                 } // append padding to the source string. The format is described in the FIPS.
+             return graph;
+           };

 
 

+           combinedAction.transitionable = true;
+           context.perform(combinedAction, operation.annotation());
+           window.setTimeout(function () {
+             context.validator().validate();
+           }, 300); // after any transition
+         };

 
 

-                 x[len >> 5] |= 0x80 << 24 - (len & 0x1f);
-                 x[(len + 128 >> 10 << 5) + 31] = len;
-                 l = x.length;
+         operation.available = function () {
+           return _actions.length && selectedIDs.length === _actions.length;
+         }; // don't cache this because the visible extent could change

 
 

-                 for (i = 0; i < l; i += 32) {
-                   //32 dwords is the block size
-                   int64copy(a, H[0]);
-                   int64copy(b, H[1]);
-                   int64copy(c, H[2]);
-                   int64copy(d, H[3]);
-                   int64copy(e, H[4]);
-                   int64copy(f, H[5]);
-                   int64copy(g, H[6]);
-                   int64copy(h, H[7]);

 
 

-                   for (j = 0; j < 16; j += 1) {
-                     W[j].h = x[i + 2 * j];
-                     W[j].l = x[i + 2 * j + 1];
-                   }
+         operation.disabled = function () {
+           if (!_actions.length) return '';

 
 

-                   for (j = 16; j < 80; j += 1) {
-                     //sigma1
-                     int64rrot(r1, W[j - 2], 19);
-                     int64revrrot(r2, W[j - 2], 29);
-                     int64shr(r3, W[j - 2], 6);
-                     s1.l = r1.l ^ r2.l ^ r3.l;
-                     s1.h = r1.h ^ r2.h ^ r3.h; //sigma0
+           var actionDisableds = _actions.map(function (action) {
+             return action.disabled(context.graph());
+           }).filter(Boolean);

 
 

-                     int64rrot(r1, W[j - 15], 1);
-                     int64rrot(r2, W[j - 15], 8);
-                     int64shr(r3, W[j - 15], 7);
-                     s0.l = r1.l ^ r2.l ^ r3.l;
-                     s0.h = r1.h ^ r2.h ^ r3.h;
-                     int64add4(W[j], s1, W[j - 7], s0, W[j - 16]);
-                   }
+           if (actionDisableds.length === _actions.length) {
+             // none of the features can be squared
+             if (new Set(actionDisableds).size > 1) {
+               return 'multiple_blockers';
+             }

 
 

-                   for (j = 0; j < 80; j += 1) {
-                     //Ch
-                     Ch.l = e.l & f.l ^ ~e.l & g.l;
-                     Ch.h = e.h & f.h ^ ~e.h & g.h; //Sigma1
+             return actionDisableds[0];
+           } else if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           }

 
 

-                     int64rrot(r1, e, 14);
-                     int64rrot(r2, e, 18);
-                     int64revrrot(r3, e, 9);
-                     s1.l = r1.l ^ r2.l ^ r3.l;
-                     s1.h = r1.h ^ r2.h ^ r3.h; //Sigma0
+           return false;

 
 

-                     int64rrot(r1, a, 28);
-                     int64revrrot(r2, a, 2);
-                     int64revrrot(r3, a, 7);
-                     s0.l = r1.l ^ r2.l ^ r3.l;
-                     s0.h = r1.h ^ r2.h ^ r3.h; //Maj
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-                     Maj.l = a.l & b.l ^ a.l & c.l ^ b.l & c.l;
-                     Maj.h = a.h & b.h ^ a.h & c.h ^ b.h & c.h;
-                     int64add5(T1, h, s1, Ch, sha512_k[j], W[j]);
-                     int64add(T2, s0, Maj);
-                     int64copy(h, g);
-                     int64copy(g, f);
-                     int64copy(f, e);
-                     int64add(e, d, T1);
-                     int64copy(d, c);
-                     int64copy(c, b);
-                     int64copy(b, a);
-                     int64add(a, T1, T2);
-                   }
+             if (osm) {
+               var missing = _coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-                   int64add(H[0], H[0], a);
-                   int64add(H[1], H[1], b);
-                   int64add(H[2], H[2], c);
-                   int64add(H[3], H[3], d);
-                   int64add(H[4], H[4], e);
-                   int64add(H[5], H[5], f);
-                   int64add(H[6], H[6], g);
-                   int64add(H[7], H[7], h);
-                 } //represent the hash as an array of 32-bit dwords
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }
+             }

 
 

+             return false;
+           }
+         };

 
 

-                 for (i = 0; i < 8; i += 1) {
-                   hash[2 * i] = H[i].h;
-                   hash[2 * i + 1] = H[i].l;
-                 }
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.orthogonalize.' + disable + '.' + _amount) : _t('operations.orthogonalize.description.' + _type + '.' + _amount);
+         };

 
 

-                 return hash;
-               } //A constructor for 64-bit numbers
+         operation.annotation = function () {
+           return _t('operations.orthogonalize.annotation.' + _type, {
+             n: _actions.length
+           });
+         };

 
 

+         operation.id = 'orthogonalize';
+         operation.keys = [_t('operations.orthogonalize.key')];
+         operation.title = _t('operations.orthogonalize.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-               function int64(h, l) {
-                 this.h = h;
-                 this.l = l; //this.toString = int64toString;
-               } //Copies src into dst, assuming both are 64-bit numbers
+       function operationReflectShort(context, selectedIDs) {
+         return operationReflect(context, selectedIDs, 'short');
+       }
+       function operationReflectLong(context, selectedIDs) {
+         return operationReflect(context, selectedIDs, 'long');
+       }
+       function operationReflect(context, selectedIDs, axis) {
+         axis = axis || 'long';
+         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
+         var nodes = utilGetAllNodes(selectedIDs, context.graph());
+         var coords = nodes.map(function (n) {
+           return n.loc;
+         });
+         var extent = utilTotalExtent(selectedIDs, context.graph());

 
 

+         var operation = function operation() {
+           var action = actionReflect(selectedIDs, context.projection).useLongAxis(Boolean(axis === 'long'));
+           context.perform(action, operation.annotation());
+           window.setTimeout(function () {
+             context.validator().validate();
+           }, 300); // after any transition
+         };

 
 

-               function int64copy(dst, src) {
-                 dst.h = src.h;
-                 dst.l = src.l;
-               } //Right-rotates a 64-bit number by shift
-               //Won't handle cases of shift>=32
-               //The function revrrot() is for that
+         operation.available = function () {
+           return nodes.length >= 3;
+         }; // don't cache this because the visible extent could change

 
 
 
 

-               function int64rrot(dst, x, shift) {
-                 dst.l = x.l >>> shift | x.h << 32 - shift;
-                 dst.h = x.h >>> shift | x.l << 32 - shift;
-               } //Reverses the dwords of the source and then rotates right by shift.
-               //This is equivalent to rotation by 32+shift
+         operation.disabled = function () {
+           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           } else if (selectedIDs.some(incompleteRelation)) {
+             return 'incomplete_relation';
+           }

 
 

+           return false;

 
 

-               function int64revrrot(dst, x, shift) {
-                 dst.l = x.h >>> shift | x.l << 32 - shift;
-                 dst.h = x.l >>> shift | x.h << 32 - shift;
-               } //Bitwise-shifts right a 64-bit number by shift
-               //Won't handle shift>=32, but it's never needed in SHA512
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

+             if (osm) {
+               var missing = coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-               function int64shr(dst, x, shift) {
-                 dst.l = x.l >>> shift | x.h << 32 - shift;
-                 dst.h = x.h >>> shift;
-               } //Adds two 64-bit numbers
-               //Like the original implementation, does not rely on 32-bit operations
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }
+             }

 
 

+             return false;
+           }

 
 

-               function int64add(dst, x, y) {
-                 var w0 = (x.l & 0xffff) + (y.l & 0xffff);
-                 var w1 = (x.l >>> 16) + (y.l >>> 16) + (w0 >>> 16);
-                 var w2 = (x.h & 0xffff) + (y.h & 0xffff) + (w1 >>> 16);
-                 var w3 = (x.h >>> 16) + (y.h >>> 16) + (w2 >>> 16);
-                 dst.l = w0 & 0xffff | w1 << 16;
-                 dst.h = w2 & 0xffff | w3 << 16;
-               } //Same, except with 4 addends. Works faster than adding them one by one.
+           function incompleteRelation(id) {
+             var entity = context.entity(id);
+             return entity.type === 'relation' && !entity.isComplete(context.graph());
+           }
+         };

 
 

+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.reflect.' + disable + '.' + multi) : _t('operations.reflect.description.' + axis + '.' + multi);
+         };

 
 

-               function int64add4(dst, a, b, c, d) {
-                 var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff);
-                 var w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (w0 >>> 16);
-                 var w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (w1 >>> 16);
-                 var w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (w2 >>> 16);
-                 dst.l = w0 & 0xffff | w1 << 16;
-                 dst.h = w2 & 0xffff | w3 << 16;
-               } //Same, except with 5 addends
+         operation.annotation = function () {
+           return _t('operations.reflect.annotation.' + axis + '.feature', {
+             n: selectedIDs.length
+           });
+         };

 
 

+         operation.id = 'reflect-' + axis;
+         operation.keys = [_t('operations.reflect.key.' + axis)];
+         operation.title = _t('operations.reflect.title.' + axis);
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-               function int64add5(dst, a, b, c, d, e) {
-                 var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff) + (e.l & 0xffff),
-                     w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (e.l >>> 16) + (w0 >>> 16),
-                     w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (e.h & 0xffff) + (w1 >>> 16),
-                     w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (e.h >>> 16) + (w2 >>> 16);
-                 dst.l = w0 & 0xffff | w1 << 16;
-                 dst.h = w2 & 0xffff | w3 << 16;
-               }
-             },
+       function operationMove(context, selectedIDs) {
+         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
+         var nodes = utilGetAllNodes(selectedIDs, context.graph());
+         var coords = nodes.map(function (n) {
+           return n.loc;
+         });
+         var extent = utilTotalExtent(selectedIDs, context.graph());

 
 

-             /**
-              * @class Hashes.RMD160
-              * @constructor
-              * @param {Object} [config]
-              *
-              * A JavaScript implementation of the RIPEMD-160 Algorithm
-              * Version 2.2 Copyright Jeremy Lin, Paul Johnston 2000 - 2009.
-              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
-              * See http://pajhome.org.uk/crypt/md5 for details.
-              * Also http://www.ocf.berkeley.edu/~jjlin/jsotp/
-              */
-             RMD160: function RMD160(options) {
-               /**
-                * Private properties configuration variables. You may need to tweak these to be compatible with
-                * the server-side, but the defaults work in most cases.
-                * @see this.setUpperCase() method
-                * @see this.setPad() method
-                */
-               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
+         var operation = function operation() {
+           context.enter(modeMove(context, selectedIDs));
+         };

 
 

-               /* hexadecimal output case format. false - lowercase; true - uppercase  */
-               b64pad = options && typeof options.pad === 'string' ? options.pa : '=',
+         operation.available = function () {
+           return selectedIDs.length > 0;
+         };

 
 

-               /* base-64 pad character. Default '=' for strict RFC compliance   */
-               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,
+         operation.disabled = function () {
+           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           } else if (selectedIDs.some(incompleteRelation)) {
+             return 'incomplete_relation';
+           }

 
 

-               /* enable/disable utf8 encoding */
-               rmd160_r1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13],
-                   rmd160_r2 = [5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11],
-                   rmd160_s1 = [11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6],
-                   rmd160_s2 = [8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11];
-               /* privileged (public) methods */
+           return false;

 
 

-               this.hex = function (s) {
-                 return rstr2hex(rstr(s));
-               };
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-               this.b64 = function (s) {
-                 return rstr2b64(rstr(s), b64pad);
-               };
+             if (osm) {
+               var missing = coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-               this.any = function (s, e) {
-                 return rstr2any(rstr(s), e);
-               };
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }
+             }

 
 

-               this.raw = function (s) {
-                 return rstr(s);
-               };
+             return false;
+           }

 
 

-               this.hex_hmac = function (k, d) {
-                 return rstr2hex(rstr_hmac(k, d));
-               };
+           function incompleteRelation(id) {
+             var entity = context.entity(id);
+             return entity.type === 'relation' && !entity.isComplete(context.graph());
+           }
+         };

 
 

-               this.b64_hmac = function (k, d) {
-                 return rstr2b64(rstr_hmac(k, d), b64pad);
-               };
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.move.' + disable + '.' + multi) : _t('operations.move.description.' + multi);
+         };

 
 

-               this.any_hmac = function (k, d, e) {
-                 return rstr2any(rstr_hmac(k, d), e);
-               };
-               /**
-                * Perform a simple self-test to see if the VM is working
-                * @return {String} Hexadecimal hash sample
-                * @public
-                */
+         operation.annotation = function () {
+           return selectedIDs.length === 1 ? _t('operations.move.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.move.annotation.feature', {
+             n: selectedIDs.length
+           });
+         };

 
 

+         operation.id = 'move';
+         operation.keys = [_t('operations.move.key')];
+         operation.title = _t('operations.move.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         operation.mouseOnly = true;
+         return operation;
+       }

 
 

-               this.vm_test = function () {
-                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
-               };
-               /**
-                * @description Enable/disable uppercase hexadecimal returned string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */
+       function modeRotate(context, entityIDs) {
+         var _tolerancePx = 4; // see also behaviorDrag, behaviorSelect, modeMove

 
 

+         var mode = {
+           id: 'rotate',
+           button: 'browse'
+         };
+         var keybinding = utilKeybinding('rotate');
+         var behaviors = [behaviorEdit(context), operationCircularize(context, entityIDs).behavior, operationDelete(context, entityIDs).behavior, operationMove(context, entityIDs).behavior, operationOrthogonalize(context, entityIDs).behavior, operationReflectLong(context, entityIDs).behavior, operationReflectShort(context, entityIDs).behavior];
+         var annotation = entityIDs.length === 1 ? _t('operations.rotate.annotation.' + context.graph().geometry(entityIDs[0])) : _t('operations.rotate.annotation.feature', {
+           n: entityIDs.length
+         });

 
 

-               this.setUpperCase = function (a) {
-                 if (typeof a === 'boolean') {
-                   hexcase = a;
-                 }
+         var _prevGraph;

 
 

-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {string} Pad
-                * @return {Object} this
-                * @public
-                */
+         var _prevAngle;

 
 

+         var _prevTransform;

 
 

-               this.setPad = function (a) {
-                 if (typeof a !== 'undefined') {
-                   b64pad = a;
-                 }
+         var _pivot; // use pointer events on supported platforms; fallback to mouse events

 
 

-                 return this;
-               };
-               /**
-                * @description Defines a base64 pad string
-                * @param {boolean}
-                * @return {Object} this
-                * @public
-                */

 
 

+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-               this.setUTF8 = function (a) {
-                 if (typeof a === 'boolean') {
-                   utf8 = a;
-                 }
+         function doRotate(d3_event) {
+           var fn;

 
 

-                 return this;
-               };
-               /* private methods */
+           if (context.graph() !== _prevGraph) {
+             fn = context.perform;
+           } else {
+             fn = context.replace;
+           } // projection changed, recalculate _pivot

 
 

-               /**
-                * Calculate the rmd160 of a raw string
-                */

 
 

+           var projection = context.projection;
+           var currTransform = projection.transform();

 
 

-               function rstr(s) {
-                 s = utf8 ? utf8Encode(s) : s;
-                 return binl2rstr(binl(rstr2binl(s), s.length * 8));
-               }
-               /**
-                * Calculate the HMAC-rmd160 of a key and some data (raw strings)
-                */
+           if (!_prevTransform || currTransform.k !== _prevTransform.k || currTransform.x !== _prevTransform.x || currTransform.y !== _prevTransform.y) {
+             var nodes = utilGetAllNodes(entityIDs, context.graph());
+             var points = nodes.map(function (n) {
+               return projection(n.loc);
+             });
+             _pivot = getPivot(points);
+             _prevAngle = undefined;
+           }

 
 

+           var currMouse = context.map().mouse(d3_event);
+           var currAngle = Math.atan2(currMouse[1] - _pivot[1], currMouse[0] - _pivot[0]);
+           if (typeof _prevAngle === 'undefined') _prevAngle = currAngle;
+           var delta = currAngle - _prevAngle;
+           fn(actionRotate(entityIDs, _pivot, delta, projection));
+           _prevTransform = currTransform;
+           _prevAngle = currAngle;
+           _prevGraph = context.graph();
+         }

 
 

-               function rstr_hmac(key, data) {
-                 key = utf8 ? utf8Encode(key) : key;
-                 data = utf8 ? utf8Encode(data) : data;
-                 var i,
-                     hash,
-                     bkey = rstr2binl(key),
-                     ipad = Array(16),
-                     opad = Array(16);
+         function getPivot(points) {
+           var _pivot;

 
 

-                 if (bkey.length > 16) {
-                   bkey = binl(bkey, key.length * 8);
-                 }
+           if (points.length === 1) {
+             _pivot = points[0];
+           } else if (points.length === 2) {
+             _pivot = geoVecInterp(points[0], points[1], 0.5);
+           } else {
+             var polygonHull = d3_polygonHull(points);

 
 

-                 for (i = 0; i < 16; i += 1) {
-                   ipad[i] = bkey[i] ^ 0x36363636;
-                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
-                 }
+             if (polygonHull.length === 2) {
+               _pivot = geoVecInterp(points[0], points[1], 0.5);
+             } else {
+               _pivot = d3_polygonCentroid(d3_polygonHull(points));
+             }
+           }

 
 

-                 hash = binl(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
-                 return binl2rstr(binl(opad.concat(hash), 512 + 160));
-               }
-               /**
-                * Convert an array of little-endian words to a string
-                */
+           return _pivot;
+         }

 
 

+         function finish(d3_event) {
+           d3_event.stopPropagation();
+           context.replace(actionNoop(), annotation);
+           context.enter(modeSelect(context, entityIDs));
+         }

 
 

-               function binl2rstr(input) {
-                 var i,
-                     output = '',
-                     l = input.length * 32;
+         function cancel() {
+           if (_prevGraph) context.pop(); // remove the rotate

 
 

-                 for (i = 0; i < l; i += 8) {
-                   output += String.fromCharCode(input[i >> 5] >>> i % 32 & 0xFF);
-                 }
+           context.enter(modeSelect(context, entityIDs));
+         }

 
 

-                 return output;
-               }
-               /**
-                * Calculate the RIPE-MD160 of an array of little-endian words, and a bit length.
-                */
+         function undone() {
+           context.enter(modeBrowse(context));
+         }

 
 

+         mode.enter = function () {
+           _prevGraph = null;
+           context.features().forceVisible(entityIDs);
+           behaviors.forEach(context.install);
+           var downEvent;
+           context.surface().on(_pointerPrefix + 'down.modeRotate', function (d3_event) {
+             downEvent = d3_event;
+           });
+           select(window).on(_pointerPrefix + 'move.modeRotate', doRotate, true).on(_pointerPrefix + 'up.modeRotate', function (d3_event) {
+             if (!downEvent) return;
+             var mapNode = context.container().select('.main-map').node();
+             var pointGetter = utilFastMouse(mapNode);
+             var p1 = pointGetter(downEvent);
+             var p2 = pointGetter(d3_event);
+             var dist = geoVecLength(p1, p2);
+             if (dist <= _tolerancePx) finish(d3_event);
+             downEvent = null;
+           }, true);
+           context.history().on('undone.modeRotate', undone);
+           keybinding.on('⎋', cancel).on('↩', finish);
+           select(document).call(keybinding);
+         };

 
 

-               function binl(x, len) {
-                 var T,
-                     j,
-                     i,
-                     l,
-                     h0 = 0x67452301,
-                     h1 = 0xefcdab89,
-                     h2 = 0x98badcfe,
-                     h3 = 0x10325476,
-                     h4 = 0xc3d2e1f0,
-                     A1,
-                     B1,
-                     C1,
-                     D1,
-                     E1,
-                     A2,
-                     B2,
-                     C2,
-                     D2,
-                     E2;
-                 /* append padding */
+         mode.exit = function () {
+           behaviors.forEach(context.uninstall);
+           context.surface().on(_pointerPrefix + 'down.modeRotate', null);
+           select(window).on(_pointerPrefix + 'move.modeRotate', null, true).on(_pointerPrefix + 'up.modeRotate', null, true);
+           context.history().on('undone.modeRotate', null);
+           select(document).call(keybinding.unbind);
+           context.features().forceVisible([]);
+         };

 
 

-                 x[len >> 5] |= 0x80 << len % 32;
-                 x[(len + 64 >>> 9 << 4) + 14] = len;
-                 l = x.length;
+         mode.selectedIDs = function () {
+           if (!arguments.length) return entityIDs; // no assign

 
 

-                 for (i = 0; i < l; i += 16) {
-                   A1 = A2 = h0;
-                   B1 = B2 = h1;
-                   C1 = C2 = h2;
-                   D1 = D2 = h3;
-                   E1 = E2 = h4;
+           return mode;
+         };

 
 

-                   for (j = 0; j <= 79; j += 1) {
-                     T = safe_add(A1, rmd160_f(j, B1, C1, D1));
-                     T = safe_add(T, x[i + rmd160_r1[j]]);
-                     T = safe_add(T, rmd160_K1(j));
-                     T = safe_add(bit_rol(T, rmd160_s1[j]), E1);
-                     A1 = E1;
-                     E1 = D1;
-                     D1 = bit_rol(C1, 10);
-                     C1 = B1;
-                     B1 = T;
-                     T = safe_add(A2, rmd160_f(79 - j, B2, C2, D2));
-                     T = safe_add(T, x[i + rmd160_r2[j]]);
-                     T = safe_add(T, rmd160_K2(j));
-                     T = safe_add(bit_rol(T, rmd160_s2[j]), E2);
-                     A2 = E2;
-                     E2 = D2;
-                     D2 = bit_rol(C2, 10);
-                     C2 = B2;
-                     B2 = T;
-                   }
+         return mode;
+       }
+
+       function operationRotate(context, selectedIDs) {
+         var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
+         var nodes = utilGetAllNodes(selectedIDs, context.graph());
+         var coords = nodes.map(function (n) {
+           return n.loc;
+         });
+         var extent = utilTotalExtent(selectedIDs, context.graph());

 
 

-                   T = safe_add(h1, safe_add(C1, D2));
-                   h1 = safe_add(h2, safe_add(D1, E2));
-                   h2 = safe_add(h3, safe_add(E1, A2));
-                   h3 = safe_add(h4, safe_add(A1, B2));
-                   h4 = safe_add(h0, safe_add(B1, C2));
-                   h0 = T;
-                 }
+         var operation = function operation() {
+           context.enter(modeRotate(context, selectedIDs));
+         };

 
 

-                 return [h0, h1, h2, h3, h4];
-               } // specific algorithm methods
+         operation.available = function () {
+           return nodes.length >= 2;
+         };

 
 

+         operation.disabled = function () {
+           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           } else if (selectedIDs.some(incompleteRelation)) {
+             return 'incomplete_relation';
+           }

 
 

-               function rmd160_f(j, x, y, z) {
-                 return 0 <= j && j <= 15 ? x ^ y ^ z : 16 <= j && j <= 31 ? x & y | ~x & z : 32 <= j && j <= 47 ? (x | ~y) ^ z : 48 <= j && j <= 63 ? x & z | y & ~z : 64 <= j && j <= 79 ? x ^ (y | ~z) : 'rmd160_f: j out of range';
-               }
+           return false;

 
 

-               function rmd160_K1(j) {
-                 return 0 <= j && j <= 15 ? 0x00000000 : 16 <= j && j <= 31 ? 0x5a827999 : 32 <= j && j <= 47 ? 0x6ed9eba1 : 48 <= j && j <= 63 ? 0x8f1bbcdc : 64 <= j && j <= 79 ? 0xa953fd4e : 'rmd160_K1: j out of range';
-               }
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-               function rmd160_K2(j) {
-                 return 0 <= j && j <= 15 ? 0x50a28be6 : 16 <= j && j <= 31 ? 0x5c4dd124 : 32 <= j && j <= 47 ? 0x6d703ef3 : 48 <= j && j <= 63 ? 0x7a6d76e9 : 64 <= j && j <= 79 ? 0x00000000 : 'rmd160_K2: j out of range';
+             if (osm) {
+               var missing = coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });
+
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;

                }
              }
                }
              }

-           }; // exposes Hashes

 
 

-           (function (window, undefined$1) {
-             var freeExports = false;
+             return false;
+           }

 
 

-             {
-               freeExports = exports;
+           function incompleteRelation(id) {
+             var entity = context.entity(id);
+             return entity.type === 'relation' && !entity.isComplete(context.graph());
+           }
+         };

 
 

-               if (exports && _typeof(commonjsGlobal) === 'object' && commonjsGlobal && commonjsGlobal === commonjsGlobal.global) {
-                 window = commonjsGlobal;
-               }
-             }
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.rotate.' + disable + '.' + multi) : _t('operations.rotate.description.' + multi);
+         };

 
 

-             if (typeof undefined$1 === 'function' && _typeof(undefined$1.amd) === 'object' && undefined$1.amd) {
-               // define as an anonymous module, so, through path mapping, it can be aliased
-               undefined$1(function () {
-                 return Hashes;
-               });
-             } else if (freeExports) {
-               // in Node.js or RingoJS v0.8.0+
-               if ( module && module.exports === freeExports) {
-                 module.exports = Hashes;
-               } // in Narwhal or RingoJS v0.7.0-
-               else {
-                   freeExports.Hashes = Hashes;
-                 }
-             } else {
-               // in a browser or Rhino
-               window.Hashes = Hashes;
-             }
-           })(this);
-         })(); // IIFE
+         operation.annotation = function () {
+           return selectedIDs.length === 1 ? _t('operations.rotate.annotation.' + context.graph().geometry(selectedIDs[0])) : _t('operations.rotate.annotation.feature', {
+             n: selectedIDs.length
+           });
+         };

 
 

-       });
+         operation.id = 'rotate';
+         operation.keys = [_t('operations.rotate.key')];
+         operation.title = _t('operations.rotate.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         operation.mouseOnly = true;
+         return operation;
+       }

 
 

-       var immutable = extend$2;
-       var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+       function modeMove(context, entityIDs, baseGraph) {
+         var _tolerancePx = 4; // see also behaviorDrag, behaviorSelect, modeRotate

 
 

-       function extend$2() {
-         var target = {};
+         var mode = {
+           id: 'move',
+           button: 'browse'
+         };
+         var keybinding = utilKeybinding('move');
+         var behaviors = [behaviorEdit(context), operationCircularize(context, entityIDs).behavior, operationDelete(context, entityIDs).behavior, operationOrthogonalize(context, entityIDs).behavior, operationReflectLong(context, entityIDs).behavior, operationReflectShort(context, entityIDs).behavior, operationRotate(context, entityIDs).behavior];
+         var annotation = entityIDs.length === 1 ? _t('operations.move.annotation.' + context.graph().geometry(entityIDs[0])) : _t('operations.move.annotation.feature', {
+           n: entityIDs.length
+         });

 
 

-         for (var i = 0; i < arguments.length; i++) {
-           var source = arguments[i];
+         var _prevGraph;

 
 

-           for (var key in source) {
-             if (hasOwnProperty$2.call(source, key)) {
-               target[key] = source[key];
-             }
-           }
-         }
+         var _cache;

 
 

-         return target;
-       }
+         var _origin;

 
 

-       var sha1 = new hashes.SHA1();
-       var ohauth = {};
+         var _nudgeInterval; // use pointer events on supported platforms; fallback to mouse events

 
 

-       ohauth.qsString = function (obj) {
-         return Object.keys(obj).sort().map(function (key) {
-           return ohauth.percentEncode(key) + '=' + ohauth.percentEncode(obj[key]);
-         }).join('&');
-       };

 
 

-       ohauth.stringQs = function (str) {
-         return str.split('&').filter(function (pair) {
-           return pair !== '';
-         }).reduce(function (obj, pair) {
-           var parts = pair.split('=');
-           obj[decodeURIComponent(parts[0])] = null === parts[1] ? '' : decodeURIComponent(parts[1]);
-           return obj;
-         }, {});
-       };
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-       ohauth.rawxhr = function (method, url, data, headers, callback) {
-         var xhr = new XMLHttpRequest(),
-             twoHundred = /^20\d$/;
+         function doMove(nudge) {
+           nudge = nudge || [0, 0];
+           var fn;

 
 

-         xhr.onreadystatechange = function () {
-           if (4 === xhr.readyState && 0 !== xhr.status) {
-             if (twoHundred.test(xhr.status)) callback(null, xhr);else return callback(xhr, null);
+           if (_prevGraph !== context.graph()) {
+             _cache = {};
+             _origin = context.map().mouseCoordinates();
+             fn = context.perform;
+           } else {
+             fn = context.overwrite;

            }
            }

-         };

 
 

-         xhr.onerror = function (e) {
-           return callback(e, null);
-         };
+           var currMouse = context.map().mouse();
+           var origMouse = context.projection(_origin);
+           var delta = geoVecSubtract(geoVecSubtract(currMouse, origMouse), nudge);
+           fn(actionMove(entityIDs, delta, context.projection, _cache));
+           _prevGraph = context.graph();
+         }

 
 

-         xhr.open(method, url, true);
+         function startNudge(nudge) {
+           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
+           _nudgeInterval = window.setInterval(function () {
+             context.map().pan(nudge);
+             doMove(nudge);
+           }, 50);
+         }

 
 

-         for (var h in headers) {
-           xhr.setRequestHeader(h, headers[h]);
+         function stopNudge() {
+           if (_nudgeInterval) {
+             window.clearInterval(_nudgeInterval);
+             _nudgeInterval = null;
+           }

          }
 
          }
 

-         xhr.send(data);
-         return xhr;
-       };
+         function move() {
+           doMove();
+           var nudge = geoViewportEdge(context.map().mouse(), context.map().dimensions());

 
 

-       ohauth.xhr = function (method, url, auth, data, options, callback) {
-         var headers = options && options.header || {
-           'Content-Type': 'application/x-www-form-urlencoded'
-         };
-         headers.Authorization = 'OAuth ' + ohauth.authHeader(auth);
-         return ohauth.rawxhr(method, url, data, headers, callback);
-       };
+           if (nudge) {
+             startNudge(nudge);
+           } else {
+             stopNudge();
+           }
+         }

 
 

-       ohauth.nonce = function () {
-         for (var o = ''; o.length < 6;) {
-           o += '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'[Math.floor(Math.random() * 61)];
+         function finish(d3_event) {
+           d3_event.stopPropagation();
+           context.replace(actionNoop(), annotation);
+           context.enter(modeSelect(context, entityIDs));
+           stopNudge();

          }
 
          }
 

-         return o;
-       };
+         function cancel() {
+           if (baseGraph) {
+             while (context.graph() !== baseGraph) {
+               context.pop();
+             } // reset to baseGraph

 
 

-       ohauth.authHeader = function (obj) {
-         return Object.keys(obj).sort().map(function (key) {
-           return encodeURIComponent(key) + '="' + encodeURIComponent(obj[key]) + '"';
-         }).join(', ');
-       };

 
 

-       ohauth.timestamp = function () {
-         return ~~(+new Date() / 1000);
-       };
+             context.enter(modeBrowse(context));
+           } else {
+             if (_prevGraph) context.pop(); // remove the move

 
 

-       ohauth.percentEncode = function (s) {
-         return encodeURIComponent(s).replace(/\!/g, '%21').replace(/\'/g, '%27').replace(/\*/g, '%2A').replace(/\(/g, '%28').replace(/\)/g, '%29');
-       };
+             context.enter(modeSelect(context, entityIDs));
+           }

 
 

-       ohauth.baseString = function (method, url, params) {
-         if (params.oauth_signature) delete params.oauth_signature;
-         return [method, ohauth.percentEncode(url), ohauth.percentEncode(ohauth.qsString(params))].join('&');
-       };
+           stopNudge();
+         }

 
 

-       ohauth.signature = function (oauth_secret, token_secret, baseString) {
-         return sha1.b64_hmac(ohauth.percentEncode(oauth_secret) + '&' + ohauth.percentEncode(token_secret), baseString);
-       };
-       /**
-        * Takes an options object for configuration (consumer_key,
-        * consumer_secret, version, signature_method, token, token_secret)
-        * and returns a function that generates the Authorization header
-        * for given data.
-        *
-        * The returned function takes these parameters:
-        * - method: GET/POST/...
-        * - uri: full URI with protocol, port, path and query string
-        * - extra_params: any extra parameters (that are passed in the POST data),
-        *   can be an object or a from-urlencoded string.
-        *
-        * Returned function returns full OAuth header with "OAuth" string in it.
-        */
+         function undone() {
+           context.enter(modeBrowse(context));
+         }

 
 

+         mode.enter = function () {
+           _origin = context.map().mouseCoordinates();
+           _prevGraph = null;
+           _cache = {};
+           context.features().forceVisible(entityIDs);
+           behaviors.forEach(context.install);
+           var downEvent;
+           context.surface().on(_pointerPrefix + 'down.modeMove', function (d3_event) {
+             downEvent = d3_event;
+           });
+           select(window).on(_pointerPrefix + 'move.modeMove', move, true).on(_pointerPrefix + 'up.modeMove', function (d3_event) {
+             if (!downEvent) return;
+             var mapNode = context.container().select('.main-map').node();
+             var pointGetter = utilFastMouse(mapNode);
+             var p1 = pointGetter(downEvent);
+             var p2 = pointGetter(d3_event);
+             var dist = geoVecLength(p1, p2);
+             if (dist <= _tolerancePx) finish(d3_event);
+             downEvent = null;
+           }, true);
+           context.history().on('undone.modeMove', undone);
+           keybinding.on('⎋', cancel).on('↩', finish);
+           select(document).call(keybinding);
+         };

 
 

-       ohauth.headerGenerator = function (options) {
-         options = options || {};
-         var consumer_key = options.consumer_key || '',
-             consumer_secret = options.consumer_secret || '',
-             signature_method = options.signature_method || 'HMAC-SHA1',
-             version = options.version || '1.0',
-             token = options.token || '',
-             token_secret = options.token_secret || '';
-         return function (method, uri, extra_params) {
-           method = method.toUpperCase();
+         mode.exit = function () {
+           stopNudge();
+           behaviors.forEach(function (behavior) {
+             context.uninstall(behavior);
+           });
+           context.surface().on(_pointerPrefix + 'down.modeMove', null);
+           select(window).on(_pointerPrefix + 'move.modeMove', null, true).on(_pointerPrefix + 'up.modeMove', null, true);
+           context.history().on('undone.modeMove', null);
+           select(document).call(keybinding.unbind);
+           context.features().forceVisible([]);
+         };

 
 

-           if (typeof extra_params === 'string' && extra_params.length > 0) {
-             extra_params = ohauth.stringQs(extra_params);
-           }
+         mode.selectedIDs = function () {
+           if (!arguments.length) return entityIDs; // no assign

 
 

-           var uri_parts = uri.split('?', 2),
-               base_uri = uri_parts[0];
-           var query_params = uri_parts.length === 2 ? ohauth.stringQs(uri_parts[1]) : {};
-           var oauth_params = {
-             oauth_consumer_key: consumer_key,
-             oauth_signature_method: signature_method,
-             oauth_version: version,
-             oauth_timestamp: ohauth.timestamp(),
-             oauth_nonce: ohauth.nonce()
-           };
-           if (token) oauth_params.oauth_token = token;
-           var all_params = immutable({}, oauth_params, query_params, extra_params),
-               base_str = ohauth.baseString(method, base_uri, all_params);
-           oauth_params.oauth_signature = ohauth.signature(consumer_secret, token_secret, base_str);
-           return 'OAuth ' + ohauth.authHeader(oauth_params);
+           return mode;

          };
          };

-       };

 
 

-       var ohauth_1 = ohauth;
+         return mode;
+       }

 
 

-       var resolveUrl$1 = createCommonjsModule(function (module, exports) {
-         // Copyright 2014 Simon Lydell
-         // X11 (“MIT”) Licensed. (See LICENSE.)
-         void function (root, factory) {
-           {
-             module.exports = factory();
-           }
-         }(commonjsGlobal, function () {
-           function resolveUrl()
-           /* ...urls */
-           {
-             var numUrls = arguments.length;
+       function behaviorPaste(context) {
+         function doPaste(d3_event) {
+           // prevent paste during low zoom selection
+           if (!context.map().withinEditableZoom()) return;
+           d3_event.preventDefault();
+           var baseGraph = context.graph();
+           var mouse = context.map().mouse();
+           var projection = context.projection;
+           var viewport = geoExtent(projection.clipExtent()).polygon();
+           if (!geoPointInPolygon(mouse, viewport)) return;
+           var oldIDs = context.copyIDs();
+           if (!oldIDs.length) return;
+           var extent = geoExtent();
+           var oldGraph = context.copyGraph();
+           var newIDs = [];
+           var action = actionCopyEntities(oldIDs, oldGraph);
+           context.perform(action);
+           var copies = action.copies();
+           var originals = new Set();
+           Object.values(copies).forEach(function (entity) {
+             originals.add(entity.id);
+           });

 
 

-             if (numUrls === 0) {
-               throw new Error("resolveUrl requires at least one argument; got none.");
-             }
+           for (var id in copies) {
+             var oldEntity = oldGraph.entity(id);
+             var newEntity = copies[id];

 
 

-             var base = document.createElement("base");
-             base.href = arguments[0];
+             extent._extend(oldEntity.extent(oldGraph)); // Exclude child nodes from newIDs if their parent way was also copied.

 
 

-             if (numUrls === 1) {
-               return base.href;
-             }

 
 

-             var head = document.getElementsByTagName("head")[0];
-             head.insertBefore(base, head.firstChild);
-             var a = document.createElement("a");
-             var resolved;
+             var parents = context.graph().parentWays(newEntity);
+             var parentCopied = parents.some(function (parent) {
+               return originals.has(parent.id);
+             });

 
 

-             for (var index = 1; index < numUrls; index++) {
-               a.href = arguments[index];
-               resolved = a.href;
-               base.href = resolved;
+             if (!parentCopied) {
+               newIDs.push(newEntity.id);

              }
              }

+           } // Put pasted objects where mouse pointer is..

 
 

-             head.removeChild(base);
-             return resolved;
-           }

 
 

-           return resolveUrl;
-         });
-       });
+           var copyPoint = context.copyLonLat() && projection(context.copyLonLat()) || projection(extent.center());
+           var delta = geoVecSubtract(mouse, copyPoint);
+           context.perform(actionMove(newIDs, delta, projection));
+           context.enter(modeMove(context, newIDs, baseGraph));
+         }

 
 

-       var assign = make_assign();
-       var create$1 = make_create();
-       var trim$3 = make_trim();
-       var Global = typeof window !== 'undefined' ? window : commonjsGlobal;
-       var util = {
-         assign: assign,
-         create: create$1,
-         trim: trim$3,
-         bind: bind$1,
-         slice: slice$2,
-         each: each,
-         map: map$1,
-         pluck: pluck,
-         isList: isList,
-         isFunction: isFunction,
-         isObject: isObject$2,
-         Global: Global
-       };
+         function behavior() {
+           context.keybinding().on(uiCmd('⌘V'), doPaste);
+           return behavior;
+         }

 
 

-       function make_assign() {
-         if (Object.assign) {
-           return Object.assign;
-         } else {
-           return function shimAssign(obj, props1, props2, etc) {
-             for (var i = 1; i < arguments.length; i++) {
-               each(Object(arguments[i]), function (val, key) {
-                 obj[key] = val;
-               });
-             }
+         behavior.off = function () {
+           context.keybinding().off(uiCmd('⌘V'));
+         };

 
 

-             return obj;
-           };
-         }
+         return behavior;

        }
 
        }
 

-       function make_create() {
-         if (Object.create) {
-           return function create(obj, assignProps1, assignProps2, etc) {
-             var assignArgsList = slice$2(arguments, 1);
-             return assign.apply(this, [Object.create(obj)].concat(assignArgsList));
-           };
-         } else {
-           var F = function F() {}; // eslint-disable-line no-inner-declarations
+       var $$5 = _export;
+       var repeat = stringRepeat;

 
 

+       // `String.prototype.repeat` method
+       // https://tc39.es/ecma262/#sec-string.prototype.repeat
+       $$5({ target: 'String', proto: true }, {
+         repeat: repeat
+       });

 
 

-           return function create(obj, assignProps1, assignProps2, etc) {
-             var assignArgsList = slice$2(arguments, 1);
-             F.prototype = obj;
-             return assign.apply(this, [new F()].concat(assignArgsList));
-           };
-         }
-       }
+       /*
+           `behaviorDrag` is like `d3_behavior.drag`, with the following differences:

 
 

-       function make_trim() {
-         if (String.prototype.trim) {
-           return function trim(str) {
-             return String.prototype.trim.call(str);
-           };
-         } else {
-           return function trim(str) {
-             return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
-           };
-         }
-       }
+           * The `origin` function is expected to return an [x, y] tuple rather than an
+             {x, y} object.
+           * The events are `start`, `move`, and `end`.
+             (https://github.com/mbostock/d3/issues/563)
+           * The `start` event is not dispatched until the first cursor movement occurs.
+             (https://github.com/mbostock/d3/pull/368)
+           * The `move` event has a `point` and `delta` [x, y] tuple properties rather
+             than `x`, `y`, `dx`, and `dy` properties.
+           * The `end` event is not dispatched if no movement occurs.
+           * An `off` function is available that unbinds the drag's internal event handlers.
+        */

 
 

-       function bind$1(obj, fn) {
-         return function () {
-           return fn.apply(obj, Array.prototype.slice.call(arguments, 0));
+       function behaviorDrag() {
+         var dispatch = dispatch$8('start', 'move', 'end'); // see also behaviorSelect
+
+         var _tolerancePx = 1; // keep this low to facilitate pixel-perfect micromapping
+
+         var _penTolerancePx = 4; // styluses can be touchy so require greater movement - #1981
+
+         var _origin = null;
+         var _selector = '';
+
+         var _targetNode;
+
+         var _targetEntity;
+
+         var _surface;
+
+         var _pointerId; // use pointer events on supported platforms; fallback to mouse events
+
+
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+
+         var d3_event_userSelectProperty = utilPrefixCSSProperty('UserSelect');
+
+         var d3_event_userSelectSuppress = function d3_event_userSelectSuppress() {
+           var selection$1 = selection();
+           var select = selection$1.style(d3_event_userSelectProperty);
+           selection$1.style(d3_event_userSelectProperty, 'none');
+           return function () {
+             selection$1.style(d3_event_userSelectProperty, select);
+           };

          };
          };

-       }

 
 

-       function slice$2(arr, index) {
-         return Array.prototype.slice.call(arr, index || 0);
-       }
+         function pointerdown(d3_event) {
+           if (_pointerId) return;
+           _pointerId = d3_event.pointerId || 'mouse';
+           _targetNode = this; // only force reflow once per drag

 
 

-       function each(obj, fn) {
-         pluck(obj, function (val, key) {
-           fn(val, key);
-           return false;
-         });
-       }
+           var pointerLocGetter = utilFastMouse(_surface || _targetNode.parentNode);
+           var offset;
+           var startOrigin = pointerLocGetter(d3_event);
+           var started = false;
+           var selectEnable = d3_event_userSelectSuppress();
+           select(window).on(_pointerPrefix + 'move.drag', pointermove).on(_pointerPrefix + 'up.drag pointercancel.drag', pointerup, true);

 
 

-       function map$1(obj, fn) {
-         var res = isList(obj) ? [] : {};
-         pluck(obj, function (v, k) {
-           res[k] = fn(v, k);
-           return false;
-         });
-         return res;
-       }
+           if (_origin) {
+             offset = _origin.call(_targetNode, _targetEntity);
+             offset = [offset[0] - startOrigin[0], offset[1] - startOrigin[1]];
+           } else {
+             offset = [0, 0];
+           }

 
 

-       function pluck(obj, fn) {
-         if (isList(obj)) {
-           for (var i = 0; i < obj.length; i++) {
-             if (fn(obj[i], i)) {
-               return obj[i];
+           d3_event.stopPropagation();
+
+           function pointermove(d3_event) {
+             if (_pointerId !== (d3_event.pointerId || 'mouse')) return;
+             var p = pointerLocGetter(d3_event);
+
+             if (!started) {
+               var dist = geoVecLength(startOrigin, p);
+               var tolerance = d3_event.pointerType === 'pen' ? _penTolerancePx : _tolerancePx; // don't start until the drag has actually moved somewhat
+
+               if (dist < tolerance) return;
+               started = true;
+               dispatch.call('start', this, d3_event, _targetEntity); // Don't send a `move` event in the same cycle as `start` since dragging
+               // a midpoint will convert the target to a node.
+             } else {
+               startOrigin = p;
+               d3_event.stopPropagation();
+               d3_event.preventDefault();
+               var dx = p[0] - startOrigin[0];
+               var dy = p[1] - startOrigin[1];
+               dispatch.call('move', this, d3_event, _targetEntity, [p[0] + offset[0], p[1] + offset[1]], [dx, dy]);

              }
            }
              }
            }

-         } else {
-           for (var key in obj) {
-             if (obj.hasOwnProperty(key)) {
-               if (fn(obj[key], key)) {
-                 return obj[key];
-               }
+
+           function pointerup(d3_event) {
+             if (_pointerId !== (d3_event.pointerId || 'mouse')) return;
+             _pointerId = null;
+
+             if (started) {
+               dispatch.call('end', this, d3_event, _targetEntity);
+               d3_event.preventDefault();

              }
              }

+
+             select(window).on(_pointerPrefix + 'move.drag', null).on(_pointerPrefix + 'up.drag pointercancel.drag', null);
+             selectEnable();

            }
          }
            }
          }

-       }

 
 

-       function isList(val) {
-         return val != null && typeof val != 'function' && typeof val.length == 'number';
-       }
+         function behavior(selection) {
+           var matchesSelector = utilPrefixDOMProperty('matchesSelector');
+           var delegate = pointerdown;

 
 

-       function isFunction(val) {
-         return val && {}.toString.call(val) === '[object Function]';
-       }
+           if (_selector) {
+             delegate = function delegate(d3_event) {
+               var root = this;
+               var target = d3_event.target;

 
 

-       function isObject$2(val) {
-         return val && {}.toString.call(val) === '[object Object]';
-       }
+               for (; target && target !== root; target = target.parentNode) {
+                 var datum = target.__data__;
+                 _targetEntity = datum instanceof osmNote ? datum : datum && datum.properties && datum.properties.entity;

 
 

-       var slice$3 = util.slice;
-       var pluck$1 = util.pluck;
-       var each$1 = util.each;
-       var bind$2 = util.bind;
-       var create$2 = util.create;
-       var isList$1 = util.isList;
-       var isFunction$1 = util.isFunction;
-       var isObject$3 = util.isObject;
-       var storeEngine = {
-         createStore: _createStore
-       };
-       var storeAPI = {
-         version: '2.0.12',
-         enabled: false,
-         // get returns the value of the given key. If that value
-         // is undefined, it returns optionalDefaultValue instead.
-         get: function get(key, optionalDefaultValue) {
-           var data = this.storage.read(this._namespacePrefix + key);
-           return this._deserialize(data, optionalDefaultValue);
-         },
-         // set will store the given value at key and returns value.
-         // Calling set with value === undefined is equivalent to calling remove.
-         set: function set(key, value) {
-           if (value === undefined) {
-             return this.remove(key);
+                 if (_targetEntity && target[matchesSelector](_selector)) {
+                   return pointerdown.call(target, d3_event);
+                 }
+               }
+             };

            }
 
            }
 

-           this.storage.write(this._namespacePrefix + key, this._serialize(value));
-           return value;
-         },
-         // remove deletes the key and value stored at the given key.
-         remove: function remove(key) {
-           this.storage.remove(this._namespacePrefix + key);
-         },
-         // each will call the given callback once for each key-value pair
-         // in this store.
-         each: function each(callback) {
-           var self = this;
-           this.storage.each(function (val, namespacedKey) {
-             callback.call(self, self._deserialize(val), (namespacedKey || '').replace(self._namespaceRegexp, ''));
-           });
-         },
-         // clearAll will remove all the stored key-value pairs in this store.
-         clearAll: function clearAll() {
-           this.storage.clearAll();
-         },
-         // additional functionality that can't live in plugins
-         // ---------------------------------------------------
-         // hasNamespace returns true if this store instance has the given namespace.
-         hasNamespace: function hasNamespace(namespace) {
-           return this._namespacePrefix == '__storejs_' + namespace + '_';
-         },
-         // createStore creates a store.js instance with the first
-         // functioning storage in the list of storage candidates,
-         // and applies the the given mixins to the instance.
-         createStore: function createStore() {
-           return _createStore.apply(this, arguments);
-         },
-         addPlugin: function addPlugin(plugin) {
-           this._addPlugin(plugin);
-         },
-         namespace: function namespace(_namespace) {
-           return _createStore(this.storage, this.plugins, _namespace);
+           selection.on(_pointerPrefix + 'down.drag' + _selector, delegate);

          }
          }

-       };

 
 

-       function _warn() {
-         var _console = typeof console == 'undefined' ? null : console;
+         behavior.off = function (selection) {
+           selection.on(_pointerPrefix + 'down.drag' + _selector, null);
+         };

 
 

-         if (!_console) {
-           return;
-         }
+         behavior.selector = function (_) {
+           if (!arguments.length) return _selector;
+           _selector = _;
+           return behavior;
+         };

 
 

-         var fn = _console.warn ? _console.warn : _console.log;
-         fn.apply(_console, arguments);
-       }
+         behavior.origin = function (_) {
+           if (!arguments.length) return _origin;
+           _origin = _;
+           return behavior;
+         };

 
 

-       function _createStore(storages, plugins, namespace) {
-         if (!namespace) {
-           namespace = '';
-         }
+         behavior.cancel = function () {
+           select(window).on(_pointerPrefix + 'move.drag', null).on(_pointerPrefix + 'up.drag pointercancel.drag', null);
+           return behavior;
+         };

 
 

-         if (storages && !isList$1(storages)) {
-           storages = [storages];
-         }
+         behavior.targetNode = function (_) {
+           if (!arguments.length) return _targetNode;
+           _targetNode = _;
+           return behavior;
+         };

 
 

-         if (plugins && !isList$1(plugins)) {
-           plugins = [plugins];
-         }
+         behavior.targetEntity = function (_) {
+           if (!arguments.length) return _targetEntity;
+           _targetEntity = _;
+           return behavior;
+         };

 
 

-         var namespacePrefix = namespace ? '__storejs_' + namespace + '_' : '';
-         var namespaceRegexp = namespace ? new RegExp('^' + namespacePrefix) : null;
-         var legalNamespaces = /^[a-zA-Z0-9_\-]*$/; // alpha-numeric + underscore and dash
+         behavior.surface = function (_) {
+           if (!arguments.length) return _surface;
+           _surface = _;
+           return behavior;
+         };

 
 

-         if (!legalNamespaces.test(namespace)) {
-           throw new Error('store.js namespaces can only have alphanumerics + underscores and dashes');
-         }
+         return utilRebind(behavior, dispatch, 'on');
+       }

 
 

-         var _privateStoreProps = {
-           _namespacePrefix: namespacePrefix,
-           _namespaceRegexp: namespaceRegexp,
-           _testStorage: function _testStorage(storage) {
-             try {
-               var testStr = '__storejs__test__';
-               storage.write(testStr, testStr);
-               var ok = storage.read(testStr) === testStr;
-               storage.remove(testStr);
-               return ok;
-             } catch (e) {
-               return false;
-             }
-           },
-           _assignPluginFnProp: function _assignPluginFnProp(pluginFnProp, propName) {
-             var oldFn = this[propName];
+       function modeDragNode(context) {
+         var mode = {
+           id: 'drag-node',
+           button: 'browse'
+         };
+         var hover = behaviorHover(context).altDisables(true).on('hover', context.ui().sidebar.hover);
+         var edit = behaviorEdit(context);

 
 

-             this[propName] = function pluginFn() {
-               var args = slice$3(arguments, 0);
-               var self = this; // super_fn calls the old function which was overwritten by
-               // this mixin.
+         var _nudgeInterval;

 
 

-               function super_fn() {
-                 if (!oldFn) {
-                   return;
-                 }
+         var _restoreSelectedIDs = [];
+         var _wasMidpoint = false;
+         var _isCancelled = false;

 
 

-                 each$1(arguments, function (arg, i) {
-                   args[i] = arg;
-                 });
-                 return oldFn.apply(self, args);
-               } // Give mixing function access to super_fn by prefixing all mixin function
-               // arguments with super_fn.
+         var _activeEntity;

 
 

+         var _startLoc;

 
 

-               var newFnArgs = [super_fn].concat(args);
-               return pluginFnProp.apply(self, newFnArgs);
-             };
-           },
-           _serialize: function _serialize(obj) {
-             return JSON.stringify(obj);
-           },
-           _deserialize: function _deserialize(strVal, defaultVal) {
-             if (!strVal) {
-               return defaultVal;
-             } // It is possible that a raw string value has been previously stored
-             // in a storage without using store.js, meaning it will be a raw
-             // string value instead of a JSON serialized string. By defaulting
-             // to the raw string value in case of a JSON parse error, we allow
-             // for past stored values to be forwards-compatible with store.js
+         var _lastLoc;

 
 

+         function startNudge(d3_event, entity, nudge) {
+           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
+           _nudgeInterval = window.setInterval(function () {
+             context.map().pan(nudge);
+             doMove(d3_event, entity, nudge);
+           }, 50);
+         }

 
 

-             var val = '';
+         function stopNudge() {
+           if (_nudgeInterval) {
+             window.clearInterval(_nudgeInterval);
+             _nudgeInterval = null;
+           }
+         }

 
 

-             try {
-               val = JSON.parse(strVal);
-             } catch (e) {
-               val = strVal;
-             }
+         function moveAnnotation(entity) {
+           return _t('operations.move.annotation.' + entity.geometry(context.graph()));
+         }

 
 

-             return val !== undefined ? val : defaultVal;
-           },
-           _addStorage: function _addStorage(storage) {
-             if (this.enabled) {
-               return;
-             }
+         function connectAnnotation(nodeEntity, targetEntity) {
+           var nodeGeometry = nodeEntity.geometry(context.graph());
+           var targetGeometry = targetEntity.geometry(context.graph());

 
 

-             if (this._testStorage(storage)) {
-               this.storage = storage;
-               this.enabled = true;
-             }
-           },
-           _addPlugin: function _addPlugin(plugin) {
-             var self = this; // If the plugin is an array, then add all plugins in the array.
-             // This allows for a plugin to depend on other plugins.
+           if (nodeGeometry === 'vertex' && targetGeometry === 'vertex') {
+             var nodeParentWayIDs = context.graph().parentWays(nodeEntity);
+             var targetParentWayIDs = context.graph().parentWays(targetEntity);
+             var sharedParentWays = utilArrayIntersection(nodeParentWayIDs, targetParentWayIDs); // if both vertices are part of the same way

 
 

-             if (isList$1(plugin)) {
-               each$1(plugin, function (plugin) {
-                 self._addPlugin(plugin);
-               });
-               return;
-             } // Keep track of all plugins we've seen so far, so that we
-             // don't add any of them twice.
+             if (sharedParentWays.length !== 0) {
+               // if the nodes are next to each other, they are merged
+               if (sharedParentWays[0].areAdjacent(nodeEntity.id, targetEntity.id)) {
+                 return _t('operations.connect.annotation.from_vertex.to_adjacent_vertex');
+               }

 
 

+               return _t('operations.connect.annotation.from_vertex.to_sibling_vertex');
+             }
+           }

 
 

-             var seenPlugin = pluck$1(this.plugins, function (seenPlugin) {
-               return plugin === seenPlugin;
-             });
+           return _t('operations.connect.annotation.from_' + nodeGeometry + '.to_' + targetGeometry);
+         }

 
 

-             if (seenPlugin) {
-               return;
-             }
+         function shouldSnapToNode(target) {
+           if (!_activeEntity) return false;
+           return _activeEntity.geometry(context.graph()) !== 'vertex' || target.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(target, context.graph());
+         }

 
 

-             this.plugins.push(plugin); // Check that the plugin is properly formed
+         function origin(entity) {
+           return context.projection(entity.loc);
+         }

 
 

-             if (!isFunction$1(plugin)) {
-               throw new Error('Plugins must be function values that return objects');
+         function keydown(d3_event) {
+           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             if (context.surface().classed('nope')) {
+               context.surface().classed('nope-suppressed', true);

              }
 
              }
 

-             var pluginProperties = plugin.call(this);
+             context.surface().classed('nope', false).classed('nope-disabled', true);
+           }
+         }

 
 

-             if (!isObject$3(pluginProperties)) {
-               throw new Error('Plugins must return an object of function properties');
-             } // Add the plugin function properties to this store instance.
+         function keyup(d3_event) {
+           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             if (context.surface().classed('nope-suppressed')) {
+               context.surface().classed('nope', true);
+             }

 
 

+             context.surface().classed('nope-suppressed', false).classed('nope-disabled', false);
+           }
+         }

 
 

-             each$1(pluginProperties, function (pluginFnProp, propName) {
-               if (!isFunction$1(pluginFnProp)) {
-                 throw new Error('Bad plugin property: ' + propName + ' from plugin ' + plugin.name + '. Plugins should only return functions.');
-               }
+         function start(d3_event, entity) {
+           _wasMidpoint = entity.type === 'midpoint';
+           var hasHidden = context.features().hasHiddenConnections(entity, context.graph());
+           _isCancelled = !context.editable() || d3_event.shiftKey || hasHidden;

 
 

-               self._assignPluginFnProp(pluginFnProp, propName);
-             });
-           },
-           // Put deprecated properties in the private API, so as to not expose it to accidential
-           // discovery through inspection of the store object.
-           // Deprecated: addStorage
-           addStorage: function addStorage(storage) {
-             _warn('store.addStorage(storage) is deprecated. Use createStore([storages])');
+           if (_isCancelled) {
+             if (hasHidden) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('modes.drag_node.connected_to_hidden'))();
+             }

 
 

-             this._addStorage(storage);
-           }
-         };
-         var store = create$2(_privateStoreProps, storeAPI, {
-           plugins: []
-         });
-         store.raw = {};
-         each$1(store, function (prop, propName) {
-           if (isFunction$1(prop)) {
-             store.raw[propName] = bind$2(store, prop);
+             return drag.cancel();

            }
            }

-         });
-         each$1(storages, function (storage) {
-           store._addStorage(storage);
-         });
-         each$1(plugins, function (plugin) {
-           store._addPlugin(plugin);
-         });
-         return store;
-       }

 
 

-       var Global$1 = util.Global;
-       var localStorage_1 = {
-         name: 'localStorage',
-         read: read,
-         write: write,
-         each: each$2,
-         remove: remove$2,
-         clearAll: clearAll
-       };
+           if (_wasMidpoint) {
+             var midpoint = entity;
+             entity = osmNode();
+             context.perform(actionAddMidpoint(midpoint, entity));
+             entity = context.entity(entity.id); // get post-action entity

 
 

-       function localStorage$1() {
-         return Global$1.localStorage;
-       }
+             var vertex = context.surface().selectAll('.' + entity.id);
+             drag.targetNode(vertex.node()).targetEntity(entity);
+           } else {
+             context.perform(actionNoop());
+           }

 
 

-       function read(key) {
-         return localStorage$1().getItem(key);
-       }
+           _activeEntity = entity;
+           _startLoc = entity.loc;
+           hover.ignoreVertex(entity.geometry(context.graph()) === 'vertex');
+           context.surface().selectAll('.' + _activeEntity.id).classed('active', true);
+           context.enter(mode);
+         } // related code
+         // - `behavior/draw.js` `datum()`

 
 

-       function write(key, data) {
-         return localStorage$1().setItem(key, data);
-       }

 
 

-       function each$2(fn) {
-         for (var i = localStorage$1().length - 1; i >= 0; i--) {
-           var key = localStorage$1().key(i);
-           fn(read(key), key);
+         function datum(d3_event) {
+           if (!d3_event || d3_event.altKey) {
+             return {};
+           } else {
+             // When dragging, snap only to touch targets..
+             // (this excludes area fills and active drawing elements)
+             var d = d3_event.target.__data__;
+             return d && d.properties && d.properties.target ? d : {};
+           }

          }
          }

-       }
-
-       function remove$2(key) {
-         return localStorage$1().removeItem(key);
-       }
-
-       function clearAll() {
-         return localStorage$1().clear();
-       }
-
-       // versions 6 and 7, where no localStorage, etc
-       // is available.
-
-       var Global$2 = util.Global;
-       var oldFFGlobalStorage = {
-         name: 'oldFF-globalStorage',
-         read: read$1,
-         write: write$1,
-         each: each$3,
-         remove: remove$3,
-         clearAll: clearAll$1
-       };
-       var globalStorage = Global$2.globalStorage;

 
 

-       function read$1(key) {
-         return globalStorage[key];
-       }
+         function doMove(d3_event, entity, nudge) {
+           nudge = nudge || [0, 0];
+           var currPoint = d3_event && d3_event.point || context.projection(_lastLoc);
+           var currMouse = geoVecSubtract(currPoint, nudge);
+           var loc = context.projection.invert(currMouse);
+           var target, edge;

 
 

-       function write$1(key, data) {
-         globalStorage[key] = data;
-       }
+           if (!_nudgeInterval) {
+             // If not nudging at the edge of the viewport, try to snap..
+             // related code
+             // - `mode/drag_node.js`     `doMove()`
+             // - `behavior/draw.js`      `click()`
+             // - `behavior/draw_way.js`  `move()`
+             var d = datum(d3_event);
+             target = d && d.properties && d.properties.entity;
+             var targetLoc = target && target.loc;
+             var targetNodes = d && d.properties && d.properties.nodes;

 
 

-       function each$3(fn) {
-         for (var i = globalStorage.length - 1; i >= 0; i--) {
-           var key = globalStorage.key(i);
-           fn(globalStorage[key], key);
-         }
-       }
+             if (targetLoc) {
+               // snap to node/vertex - a point target with `.loc`
+               if (shouldSnapToNode(target)) {
+                 loc = targetLoc;
+               }
+             } else if (targetNodes) {
+               // snap to way - a line target with `.nodes`
+               edge = geoChooseEdge(targetNodes, context.map().mouse(), context.projection, end.id);

 
 

-       function remove$3(key) {
-         return globalStorage.removeItem(key);
-       }
+               if (edge) {
+                 loc = edge.loc;
+               }
+             }
+           }

 
 

-       function clearAll$1() {
-         each$3(function (key, _) {
-           delete globalStorage[key];
-         });
-       }
+           context.replace(actionMoveNode(entity.id, loc)); // Below here: validations

 
 

-       // versions 6 and 7, where no localStorage, sessionStorage, etc
-       // is available.
+           var isInvalid = false; // Check if this connection to `target` could cause relations to break..

 
 

-       var Global$3 = util.Global;
-       var oldIEUserDataStorage = {
-         name: 'oldIE-userDataStorage',
-         write: write$2,
-         read: read$2,
-         each: each$4,
-         remove: remove$4,
-         clearAll: clearAll$2
-       };
-       var storageName = 'storejs';
-       var doc = Global$3.document;
+           if (target) {
+             isInvalid = hasRelationConflict(entity, target, edge, context.graph());
+           } // Check if this drag causes the geometry to break..

 
 

-       var _withStorageEl = _makeIEStorageElFunction();

 
 

-       var disable = (Global$3.navigator ? Global$3.navigator.userAgent : '').match(/ (MSIE 8|MSIE 9|MSIE 10)\./); // MSIE 9.x, MSIE 10.x
+           if (!isInvalid) {
+             isInvalid = hasInvalidGeometry(entity, context.graph());
+           }

 
 

-       function write$2(unfixedKey, data) {
-         if (disable) {
-           return;
-         }
+           var nope = context.surface().classed('nope');

 
 

-         var fixedKey = fixKey(unfixedKey);
+           if (isInvalid === 'relation' || isInvalid === 'restriction') {
+             if (!nope) {
+               // about to nope - show hint
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('operations.connect.' + isInvalid, {
+                 relation: _mainPresetIndex.item('type/restriction').name()
+               }))();
+             }
+           } else if (isInvalid) {
+             var errorID = isInvalid === 'line' ? 'lines' : 'areas';
+             context.ui().flash.duration(3000).iconName('#iD-icon-no').label(_t('self_intersection.error.' + errorID))();
+           } else {
+             if (nope) {
+               // about to un-nope, remove hint
+               context.ui().flash.duration(1).label('')();
+             }
+           }

 
 

-         _withStorageEl(function (storageEl) {
-           storageEl.setAttribute(fixedKey, data);
-           storageEl.save(storageName);
-         });
-       }
+           var nopeDisabled = context.surface().classed('nope-disabled');

 
 

-       function read$2(unfixedKey) {
-         if (disable) {
-           return;
-         }
+           if (nopeDisabled) {
+             context.surface().classed('nope', false).classed('nope-suppressed', isInvalid);
+           } else {
+             context.surface().classed('nope', isInvalid).classed('nope-suppressed', false);
+           }

 
 

-         var fixedKey = fixKey(unfixedKey);
-         var res = null;
+           _lastLoc = loc;
+         } // Uses `actionConnect.disabled()` to know whether this connection is ok..

 
 

-         _withStorageEl(function (storageEl) {
-           res = storageEl.getAttribute(fixedKey);
-         });

 
 

-         return res;
-       }
+         function hasRelationConflict(entity, target, edge, graph) {
+           var testGraph = graph.update(); // copy
+           // if snapping to way - add midpoint there and consider that the target..

 
 

-       function each$4(callback) {
-         _withStorageEl(function (storageEl) {
-           var attributes = storageEl.XMLDocument.documentElement.attributes;
+           if (edge) {
+             var midpoint = osmNode();
+             var action = actionAddMidpoint({
+               loc: edge.loc,
+               edge: [target.nodes[edge.index - 1], target.nodes[edge.index]]
+             }, midpoint);
+             testGraph = action(testGraph);
+             target = midpoint;
+           } // can we connect to it?

 
 

-           for (var i = attributes.length - 1; i >= 0; i--) {
-             var attr = attributes[i];
-             callback(storageEl.getAttribute(attr.name), attr.name);
-           }
-         });
-       }

 
 

-       function remove$4(unfixedKey) {
-         var fixedKey = fixKey(unfixedKey);
+           var ids = [entity.id, target.id];
+           return actionConnect(ids).disabled(testGraph);
+         }

 
 

-         _withStorageEl(function (storageEl) {
-           storageEl.removeAttribute(fixedKey);
-           storageEl.save(storageName);
-         });
-       }
+         function hasInvalidGeometry(entity, graph) {
+           var parents = graph.parentWays(entity);
+           var i, j, k;

 
 

-       function clearAll$2() {
-         _withStorageEl(function (storageEl) {
-           var attributes = storageEl.XMLDocument.documentElement.attributes;
-           storageEl.load(storageName);
+           for (i = 0; i < parents.length; i++) {
+             var parent = parents[i];
+             var nodes = [];
+             var activeIndex = null; // which multipolygon ring contains node being dragged
+             // test any parent multipolygons for valid geometry

 
 

-           for (var i = attributes.length - 1; i >= 0; i--) {
-             storageEl.removeAttribute(attributes[i].name);
-           }
+             var relations = graph.parentRelations(parent);

 
 

-           storageEl.save(storageName);
-         });
-       } // Helpers
-       //////////
-       // In IE7, keys cannot start with a digit or contain certain chars.
-       // See https://github.com/marcuswestin/store.js/issues/40
-       // See https://github.com/marcuswestin/store.js/issues/83
+             for (j = 0; j < relations.length; j++) {
+               if (!relations[j].isMultipolygon()) continue;
+               var rings = osmJoinWays(relations[j].members, graph); // find active ring and test it for self intersections

 
 

+               for (k = 0; k < rings.length; k++) {
+                 nodes = rings[k].nodes;

 
 

-       var forbiddenCharsRegex = new RegExp("[!\"#$%&'()*+,/\\\\:;<=>?@[\\]^`{|}~]", "g");
+                 if (nodes.find(function (n) {
+                   return n.id === entity.id;
+                 })) {
+                   activeIndex = k;

 
 

-       function fixKey(key) {
-         return key.replace(/^\d/, '___$&').replace(forbiddenCharsRegex, '___');
-       }
+                   if (geoHasSelfIntersections(nodes, entity.id)) {
+                     return 'multipolygonMember';
+                   }
+                 }

 
 

-       function _makeIEStorageElFunction() {
-         if (!doc || !doc.documentElement || !doc.documentElement.addBehavior) {
-           return null;
-         }
+                 rings[k].coords = nodes.map(function (n) {
+                   return n.loc;
+                 });
+               } // test active ring for intersections with other rings in the multipolygon

 
 

-         var scriptTag = 'script',
-             storageOwner,
-             storageContainer,
-             storageEl; // Since #userData storage applies only to specific paths, we need to
-         // somehow link our data to a specific path.  We choose /favicon.ico
-         // as a pretty safe option, since all browsers already make a request to
-         // this URL anyway and being a 404 will not hurt us here.  We wrap an
-         // iframe pointing to the favicon in an ActiveXObject(htmlfile) object
-         // (see: http://msdn.microsoft.com/en-us/library/aa752574(v=VS.85).aspx)
-         // since the iframe access rules appear to allow direct access and
-         // manipulation of the document element, even for a 404 page.  This
-         // document can be used instead of the current document (which would
-         // have been limited to the current path) to perform #userData storage.

 
 

-         try {
-           /* global ActiveXObject */
-           storageContainer = new ActiveXObject('htmlfile');
-           storageContainer.open();
-           storageContainer.write('<' + scriptTag + '>document.w=window</' + scriptTag + '><iframe src="/favicon.ico"></iframe>');
-           storageContainer.close();
-           storageOwner = storageContainer.w.frames[0].document;
-           storageEl = storageOwner.createElement('div');
-         } catch (e) {
-           // somehow ActiveXObject instantiation failed (perhaps some special
-           // security settings or otherwse), fall back to per-path storage
-           storageEl = doc.createElement('div');
-           storageOwner = doc.body;
-         }
+               for (k = 0; k < rings.length; k++) {
+                 if (k === activeIndex) continue; // make sure active ring doesn't cross passive rings

 
 

-         return function (storeFunction) {
-           var args = [].slice.call(arguments, 0);
-           args.unshift(storageEl); // See http://msdn.microsoft.com/en-us/library/ms531081(v=VS.85).aspx
-           // and http://msdn.microsoft.com/en-us/library/ms531424(v=VS.85).aspx
+                 if (geoHasLineIntersections(rings[activeIndex].nodes, rings[k].nodes, entity.id)) {
+                   return 'multipolygonRing';
+                 }
+               }
+             } // If we still haven't tested this node's parent way for self-intersections.
+             // (because it's not a member of a multipolygon), test it now.

 
 

-           storageOwner.appendChild(storageEl);
-           storageEl.addBehavior('#default#userData');
-           storageEl.load(storageName);
-           storeFunction.apply(this, args);
-           storageOwner.removeChild(storageEl);
-           return;
-         };
-       }

 
 

-       // doesn't work but cookies do. This implementation is adopted from
-       // https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage
+             if (activeIndex === null) {
+               nodes = parent.nodes.map(function (nodeID) {
+                 return graph.entity(nodeID);
+               });

 
 

-       var Global$4 = util.Global;
-       var trim$4 = util.trim;
-       var cookieStorage = {
-         name: 'cookieStorage',
-         read: read$3,
-         write: write$3,
-         each: each$5,
-         remove: remove$5,
-         clearAll: clearAll$3
-       };
-       var doc$1 = Global$4.document;
+               if (nodes.length && geoHasSelfIntersections(nodes, entity.id)) {
+                 return parent.geometry(graph);
+               }
+             }
+           }

 
 

-       function read$3(key) {
-         if (!key || !_has(key)) {
-           return null;
+           return false;

          }
 
          }
 

-         var regexpStr = "(?:^|.*;\\s*)" + escape(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*";
-         return unescape(doc$1.cookie.replace(new RegExp(regexpStr), "$1"));
-       }
+         function move(d3_event, entity, point) {
+           if (_isCancelled) return;
+           d3_event.stopPropagation();
+           context.surface().classed('nope-disabled', d3_event.altKey);
+           _lastLoc = context.projection.invert(point);
+           doMove(d3_event, entity);
+           var nudge = geoViewportEdge(point, context.map().dimensions());

 
 

-       function each$5(callback) {
-         var cookies = doc$1.cookie.split(/; ?/g);
+           if (nudge) {
+             startNudge(d3_event, entity, nudge);
+           } else {
+             stopNudge();
+           }
+         }

 
 

-         for (var i = cookies.length - 1; i >= 0; i--) {
-           if (!trim$4(cookies[i])) {
-             continue;
+         function end(d3_event, entity) {
+           if (_isCancelled) return;
+           var wasPoint = entity.geometry(context.graph()) === 'point';
+           var d = datum(d3_event);
+           var nope = d && d.properties && d.properties.nope || context.surface().classed('nope');
+           var target = d && d.properties && d.properties.entity; // entity to snap to
+
+           if (nope) {
+             // bounce back
+             context.perform(_actionBounceBack(entity.id, _startLoc));
+           } else if (target && target.type === 'way') {
+             var choice = geoChooseEdge(context.graph().childNodes(target), context.map().mouse(), context.projection, entity.id);
+             context.replace(actionAddMidpoint({
+               loc: choice.loc,
+               edge: [target.nodes[choice.index - 1], target.nodes[choice.index]]
+             }, entity), connectAnnotation(entity, target));
+           } else if (target && target.type === 'node' && shouldSnapToNode(target)) {
+             context.replace(actionConnect([target.id, entity.id]), connectAnnotation(entity, target));
+           } else if (_wasMidpoint) {
+             context.replace(actionNoop(), _t('operations.add.annotation.vertex'));
+           } else {
+             context.replace(actionNoop(), moveAnnotation(entity));

            }
 
            }
 

-           var kvp = cookies[i].split('=');
-           var key = unescape(kvp[0]);
-           var val = unescape(kvp[1]);
-           callback(val, key);
-         }
-       }
+           if (wasPoint) {
+             context.enter(modeSelect(context, [entity.id]));
+           } else {
+             var reselection = _restoreSelectedIDs.filter(function (id) {
+               return context.graph().hasEntity(id);
+             });

 
 

-       function write$3(key, data) {
-         if (!key) {
-           return;
+             if (reselection.length) {
+               context.enter(modeSelect(context, reselection));
+             } else {
+               context.enter(modeBrowse(context));
+             }
+           }

          }
 
          }
 

-         doc$1.cookie = escape(key) + "=" + escape(data) + "; expires=Tue, 19 Jan 2038 03:14:07 GMT; path=/";
-       }
+         function _actionBounceBack(nodeID, toLoc) {
+           var moveNode = actionMoveNode(nodeID, toLoc);

 
 

-       function remove$5(key) {
-         if (!key || !_has(key)) {
-           return;
+           var action = function action(graph, t) {
+             // last time through, pop off the bounceback perform.
+             // it will then overwrite the initial perform with a moveNode that does nothing
+             if (t === 1) context.pop();
+             return moveNode(graph, t);
+           };
+
+           action.transitionable = true;
+           return action;

          }
 
          }
 

-         doc$1.cookie = escape(key) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/";
-       }
+         function cancel() {
+           drag.cancel();
+           context.enter(modeBrowse(context));
+         }

 
 

-       function clearAll$3() {
-         each$5(function (_, key) {
-           remove$5(key);
-         });
-       }
+         var drag = behaviorDrag().selector('.layer-touch.points .target').surface(context.container().select('.main-map').node()).origin(origin).on('start', start).on('move', move).on('end', end);

 
 

-       function _has(key) {
-         return new RegExp("(?:^|;\\s*)" + escape(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=").test(doc$1.cookie);
-       }
+         mode.enter = function () {
+           context.install(hover);
+           context.install(edit);
+           select(window).on('keydown.dragNode', keydown).on('keyup.dragNode', keyup);
+           context.history().on('undone.drag-node', cancel);
+         };

 
 

-       var Global$5 = util.Global;
-       var sessionStorage_1 = {
-         name: 'sessionStorage',
-         read: read$4,
-         write: write$4,
-         each: each$6,
-         remove: remove$6,
-         clearAll: clearAll$4
-       };
+         mode.exit = function () {
+           context.ui().sidebar.hover.cancel();
+           context.uninstall(hover);
+           context.uninstall(edit);
+           select(window).on('keydown.dragNode', null).on('keyup.dragNode', null);
+           context.history().on('undone.drag-node', null);
+           _activeEntity = null;
+           context.surface().classed('nope', false).classed('nope-suppressed', false).classed('nope-disabled', false).selectAll('.active').classed('active', false);
+           stopNudge();
+         };

 
 

-       function sessionStorage() {
-         return Global$5.sessionStorage;
-       }
+         mode.selectedIDs = function () {
+           if (!arguments.length) return _activeEntity ? [_activeEntity.id] : []; // no assign

 
 

-       function read$4(key) {
-         return sessionStorage().getItem(key);
-       }
+           return mode;
+         };

 
 

-       function write$4(key, data) {
-         return sessionStorage().setItem(key, data);
-       }
+         mode.activeID = function () {
+           if (!arguments.length) return _activeEntity && _activeEntity.id; // no assign

 
 

-       function each$6(fn) {
-         for (var i = sessionStorage().length - 1; i >= 0; i--) {
-           var key = sessionStorage().key(i);
-           fn(read$4(key), key);
-         }
-       }
+           return mode;
+         };

 
 

-       function remove$6(key) {
-         return sessionStorage().removeItem(key);
-       }
+         mode.restoreSelectedIDs = function (_) {
+           if (!arguments.length) return _restoreSelectedIDs;
+           _restoreSelectedIDs = _;
+           return mode;
+         };

 
 

-       function clearAll$4() {
-         return sessionStorage().clear();
+         mode.behavior = drag;
+         return mode;

        }
 
        }
 

-       // memoryStorage is a useful last fallback to ensure that the store
-       // is functions (meaning store.get(), store.set(), etc will all function).
-       // However, stored values will not persist when the browser navigates to
-       // a new page or reloads the current page.
-       var memoryStorage_1 = {
-         name: 'memoryStorage',
-         read: read$5,
-         write: write$5,
-         each: each$7,
-         remove: remove$7,
-         clearAll: clearAll$5
-       };
-       var memoryStorage = {};
-
-       function read$5(key) {
-         return memoryStorage[key];
-       }
+       var $$4 = _export;
+       var NativePromise = nativePromiseConstructor;
+       var fails$1 = fails$N;
+       var getBuiltIn = getBuiltIn$9;
+       var speciesConstructor = speciesConstructor$8;
+       var promiseResolve = promiseResolve$2;
+       var redefine = redefine$g.exports;

 
 

-       function write$5(key, data) {
-         memoryStorage[key] = data;
-       }
+       // Safari bug https://bugs.webkit.org/show_bug.cgi?id=200829
+       var NON_GENERIC = !!NativePromise && fails$1(function () {
+         NativePromise.prototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });
+       });

 
 

-       function each$7(callback) {
-         for (var key in memoryStorage) {
-           if (memoryStorage.hasOwnProperty(key)) {
-             callback(memoryStorage[key], key);
-           }
+       // `Promise.prototype.finally` method
+       // https://tc39.es/ecma262/#sec-promise.prototype.finally
+       $$4({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {
+         'finally': function (onFinally) {
+           var C = speciesConstructor(this, getBuiltIn('Promise'));
+           var isFunction = typeof onFinally == 'function';
+           return this.then(
+             isFunction ? function (x) {
+               return promiseResolve(C, onFinally()).then(function () { return x; });
+             } : onFinally,
+             isFunction ? function (e) {
+               return promiseResolve(C, onFinally()).then(function () { throw e; });
+             } : onFinally
+           );

          }
          }

-       }
+       });

 
 

-       function remove$7(key) {
-         delete memoryStorage[key];
+       // makes sure that native promise-based APIs `Promise#finally` properly works with patched `Promise#then`
+       if (typeof NativePromise == 'function') {
+         var method = getBuiltIn('Promise').prototype['finally'];
+         if (NativePromise.prototype['finally'] !== method) {
+           redefine(NativePromise.prototype, 'finally', method, { unsafe: true });
+         }

        }
 
        }
 

-       function clearAll$5(key) {
-         memoryStorage = {};
+       function quickselect(arr, k, left, right, compare) {
+         quickselectStep(arr, k, left || 0, right || arr.length - 1, compare || defaultCompare);

        }
 
        }
 

-       var all = [// Listed in order of usage preference
-       localStorage_1, oldFFGlobalStorage, oldIEUserDataStorage, cookieStorage, sessionStorage_1, memoryStorage_1];
-
-       /* eslint-disable */
-       //  json2.js
-       //  2016-10-28
-       //  Public Domain.
-       //  NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
-       //  See http://www.JSON.org/js.html
-       //  This code should be minified before deployment.
-       //  See http://javascript.crockford.com/jsmin.html
-       //  USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
-       //  NOT CONTROL.
-       //  This file creates a global JSON object containing two methods: stringify
-       //  and parse. This file provides the ES5 JSON capability to ES3 systems.
-       //  If a project might run on IE8 or earlier, then this file should be included.
-       //  This file does nothing on ES5 systems.
-       //      JSON.stringify(value, replacer, space)
-       //          value       any JavaScript value, usually an object or array.
-       //          replacer    an optional parameter that determines how object
-       //                      values are stringified for objects. It can be a
-       //                      function or an array of strings.
-       //          space       an optional parameter that specifies the indentation
-       //                      of nested structures. If it is omitted, the text will
-       //                      be packed without extra whitespace. If it is a number,
-       //                      it will specify the number of spaces to indent at each
-       //                      level. If it is a string (such as "\t" or "&nbsp;"),
-       //                      it contains the characters used to indent at each level.
-       //          This method produces a JSON text from a JavaScript value.
-       //          When an object value is found, if the object contains a toJSON
-       //          method, its toJSON method will be called and the result will be
-       //          stringified. A toJSON method does not serialize: it returns the
-       //          value represented by the name/value pair that should be serialized,
-       //          or undefined if nothing should be serialized. The toJSON method
-       //          will be passed the key associated with the value, and this will be
-       //          bound to the value.
-       //          For example, this would serialize Dates as ISO strings.
-       //              Date.prototype.toJSON = function (key) {
-       //                  function f(n) {
-       //                      // Format integers to have at least two digits.
-       //                      return (n < 10)
-       //                          ? "0" + n
-       //                          : n;
-       //                  }
-       //                  return this.getUTCFullYear()   + "-" +
-       //                       f(this.getUTCMonth() + 1) + "-" +
-       //                       f(this.getUTCDate())      + "T" +
-       //                       f(this.getUTCHours())     + ":" +
-       //                       f(this.getUTCMinutes())   + ":" +
-       //                       f(this.getUTCSeconds())   + "Z";
-       //              };
-       //          You can provide an optional replacer method. It will be passed the
-       //          key and value of each member, with this bound to the containing
-       //          object. The value that is returned from your method will be
-       //          serialized. If your method returns undefined, then the member will
-       //          be excluded from the serialization.
-       //          If the replacer parameter is an array of strings, then it will be
-       //          used to select the members to be serialized. It filters the results
-       //          such that only members with keys listed in the replacer array are
-       //          stringified.
-       //          Values that do not have JSON representations, such as undefined or
-       //          functions, will not be serialized. Such values in objects will be
-       //          dropped; in arrays they will be replaced with null. You can use
-       //          a replacer function to replace those with JSON values.
-       //          JSON.stringify(undefined) returns undefined.
-       //          The optional space parameter produces a stringification of the
-       //          value that is filled with line breaks and indentation to make it
-       //          easier to read.
-       //          If the space parameter is a non-empty string, then that string will
-       //          be used for indentation. If the space parameter is a number, then
-       //          the indentation will be that many spaces.
-       //          Example:
-       //          text = JSON.stringify(["e", {pluribus: "unum"}]);
-       //          // text is '["e",{"pluribus":"unum"}]'
-       //          text = JSON.stringify(["e", {pluribus: "unum"}], null, "\t");
-       //          // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
-       //          text = JSON.stringify([new Date()], function (key, value) {
-       //              return this[key] instanceof Date
-       //                  ? "Date(" + this[key] + ")"
-       //                  : value;
-       //          });
-       //          // text is '["Date(---current time---)"]'
-       //      JSON.parse(text, reviver)
-       //          This method parses a JSON text to produce an object or array.
-       //          It can throw a SyntaxError exception.
-       //          The optional reviver parameter is a function that can filter and
-       //          transform the results. It receives each of the keys and values,
-       //          and its return value is used instead of the original value.
-       //          If it returns what it received, then the structure is not modified.
-       //          If it returns undefined then the member is deleted.
-       //          Example:
-       //          // Parse the text. Values that look like ISO date strings will
-       //          // be converted to Date objects.
-       //          myData = JSON.parse(text, function (key, value) {
-       //              var a;
-       //              if (typeof value === "string") {
-       //                  a =
-       //   /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
-       //                  if (a) {
-       //                      return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
-       //                          +a[5], +a[6]));
-       //                  }
-       //              }
-       //              return value;
-       //          });
-       //          myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
-       //              var d;
-       //              if (typeof value === "string" &&
-       //                      value.slice(0, 5) === "Date(" &&
-       //                      value.slice(-1) === ")") {
-       //                  d = new Date(value.slice(5, -1));
-       //                  if (d) {
-       //                      return d;
-       //                  }
-       //              }
-       //              return value;
-       //          });
-       //  This is a reference implementation. You are free to copy, modify, or
-       //  redistribute.
+       function quickselectStep(arr, k, left, right, compare) {
+         while (right > left) {
+           if (right - left > 600) {
+             var n = right - left + 1;
+             var m = k - left + 1;
+             var z = Math.log(n);
+             var s = 0.5 * Math.exp(2 * z / 3);
+             var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
+             var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
+             var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
+             quickselectStep(arr, k, newLeft, newRight, compare);
+           }

 
 

-       /*jslint
-           eval, for, this
-       */
+           var t = arr[k];
+           var i = left;
+           var j = right;
+           swap(arr, left, k);
+           if (compare(arr[right], t) > 0) swap(arr, left, right);

 
 

-       /*property
-           JSON, apply, call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
-           getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
-           lastIndex, length, parse, prototype, push, replace, slice, stringify,
-           test, toJSON, toString, valueOf
-       */
-       // Create a JSON object only if one does not already exist. We create the
-       // methods in a closure to avoid creating global variables.
-       if ((typeof JSON === "undefined" ? "undefined" : _typeof(JSON)) !== "object") {
-         JSON = {};
-       }
+           while (i < j) {
+             swap(arr, i, j);
+             i++;
+             j--;

 
 

-       (function () {
+             while (compare(arr[i], t) < 0) {
+               i++;
+             }

 
 

-         var rx_one = /^[\],:{}\s]*$/;
-         var rx_two = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
-         var rx_three = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
-         var rx_four = /(?:^|:|,)(?:\s*\[)+/g;
-         var rx_escapable = /[\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
-         var rx_dangerous = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
+             while (compare(arr[j], t) > 0) {
+               j--;
+             }
+           }

 
 

-         function f(n) {
-           // Format integers to have at least two digits.
-           return n < 10 ? "0" + n : n;
+           if (compare(arr[left], t) === 0) swap(arr, left, j);else {
+             j++;
+             swap(arr, j, right);
+           }
+           if (j <= k) left = j + 1;
+           if (k <= j) right = j - 1;

          }
          }

+       }

 
 

-         function this_value() {
-           return this.valueOf();
-         }
+       function swap(arr, i, j) {
+         var tmp = arr[i];
+         arr[i] = arr[j];
+         arr[j] = tmp;
+       }

 
 

-         if (typeof Date.prototype.toJSON !== "function") {
-           Date.prototype.toJSON = function () {
-             return isFinite(this.valueOf()) ? this.getUTCFullYear() + "-" + f(this.getUTCMonth() + 1) + "-" + f(this.getUTCDate()) + "T" + f(this.getUTCHours()) + ":" + f(this.getUTCMinutes()) + ":" + f(this.getUTCSeconds()) + "Z" : null;
-           };
+       function defaultCompare(a, b) {
+         return a < b ? -1 : a > b ? 1 : 0;
+       }

 
 

-           Boolean.prototype.toJSON = this_value;
-           Number.prototype.toJSON = this_value;
-           String.prototype.toJSON = this_value;
-         }
+       var RBush = /*#__PURE__*/function () {
+         function RBush() {
+           var maxEntries = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 9;

 
 

-         var gap;
-         var indent;
-         var meta;
-         var rep;
+           _classCallCheck$1(this, RBush);

 
 

-         function quote(string) {
-           // If the string contains no control characters, no quote characters, and no
-           // backslash characters, then we can safely slap some quotes around it.
-           // Otherwise we must also replace the offending characters with safe escape
-           // sequences.
-           rx_escapable.lastIndex = 0;
-           return rx_escapable.test(string) ? "\"" + string.replace(rx_escapable, function (a) {
-             var c = meta[a];
-             return typeof c === "string" ? c : "\\u" + ("0000" + a.charCodeAt(0).toString(16)).slice(-4);
-           }) + "\"" : "\"" + string + "\"";
+           // max entries in a node is 9 by default; min node fill is 40% for best performance
+           this._maxEntries = Math.max(4, maxEntries);
+           this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
+           this.clear();

          }
 
          }
 

-         function str(key, holder) {
-           // Produce a string from holder[key].
-           var i; // The loop counter.
+         _createClass$1(RBush, [{
+           key: "all",
+           value: function all() {
+             return this._all(this.data, []);
+           }
+         }, {
+           key: "search",
+           value: function search(bbox) {
+             var node = this.data;
+             var result = [];
+             if (!intersects(bbox, node)) return result;
+             var toBBox = this.toBBox;
+             var nodesToSearch = [];

 
 

-           var k; // The member key.
+             while (node) {
+               for (var i = 0; i < node.children.length; i++) {
+                 var child = node.children[i];
+                 var childBBox = node.leaf ? toBBox(child) : child;

 
 

-           var v; // The member value.
+                 if (intersects(bbox, childBBox)) {
+                   if (node.leaf) result.push(child);else if (contains(bbox, childBBox)) this._all(child, result);else nodesToSearch.push(child);
+                 }
+               }

 
 

-           var length;
-           var mind = gap;
-           var partial;
-           var value = holder[key]; // If the value has a toJSON method, call it to obtain a replacement value.
+               node = nodesToSearch.pop();
+             }

 
 

-           if (value && _typeof(value) === "object" && typeof value.toJSON === "function") {
-             value = value.toJSON(key);
-           } // If we were called with a replacer function, then call the replacer to
-           // obtain a replacement value.
+             return result;
+           }
+         }, {
+           key: "collides",
+           value: function collides(bbox) {
+             var node = this.data;
+             if (!intersects(bbox, node)) return false;
+             var nodesToSearch = [];

 
 

+             while (node) {
+               for (var i = 0; i < node.children.length; i++) {
+                 var child = node.children[i];
+                 var childBBox = node.leaf ? this.toBBox(child) : child;

 
 

-           if (typeof rep === "function") {
-             value = rep.call(holder, key, value);
-           } // What happens next depends on the value's type.
+                 if (intersects(bbox, childBBox)) {
+                   if (node.leaf || contains(bbox, childBBox)) return true;
+                   nodesToSearch.push(child);
+                 }
+               }

 
 

+               node = nodesToSearch.pop();
+             }

 
 

-           switch (_typeof(value)) {
-             case "string":
-               return quote(value);
+             return false;
+           }
+         }, {
+           key: "load",
+           value: function load(data) {
+             if (!(data && data.length)) return this;

 
 

-             case "number":
-               // JSON numbers must be finite. Encode non-finite numbers as null.
-               return isFinite(value) ? String(value) : "null";
+             if (data.length < this._minEntries) {
+               for (var i = 0; i < data.length; i++) {
+                 this.insert(data[i]);
+               }

 
 

-             case "boolean":
-             case "null":
-               // If the value is a boolean or null, convert it to a string. Note:
-               // typeof null does not produce "null". The case is included here in
-               // the remote chance that this gets fixed someday.
-               return String(value);
-             // If the type is "object", we might be dealing with an object or an array or
-             // null.
+               return this;
+             } // recursively build the tree with the given data from scratch using OMT algorithm

 
 

-             case "object":
-               // Due to a specification blunder in ECMAScript, typeof null is "object",
-               // so watch out for that case.
-               if (!value) {
-                 return "null";
-               } // Make an array to hold the partial results of stringifying this object value.

 
 

+             var node = this._build(data.slice(), 0, data.length - 1, 0);

 
 

-               gap += indent;
-               partial = []; // Is the value an array?
+             if (!this.data.children.length) {
+               // save as is if tree is empty
+               this.data = node;
+             } else if (this.data.height === node.height) {
+               // split root if trees have the same height
+               this._splitRoot(this.data, node);
+             } else {
+               if (this.data.height < node.height) {
+                 // swap trees if inserted one is bigger
+                 var tmpNode = this.data;
+                 this.data = node;
+                 node = tmpNode;
+               } // insert the small tree into the large tree at appropriate level

 
 

-               if (Object.prototype.toString.apply(value) === "[object Array]") {
-                 // The value is an array. Stringify every element. Use null as a placeholder
-                 // for non-JSON values.
-                 length = value.length;

 
 

-                 for (i = 0; i < length; i += 1) {
-                   partial[i] = str(i, value) || "null";
-                 } // Join all of the elements together, separated with commas, and wrap them in
-                 // brackets.
+               this._insert(node, this.data.height - node.height - 1, true);
+             }

 
 

+             return this;
+           }
+         }, {
+           key: "insert",
+           value: function insert(item) {
+             if (item) this._insert(item, this.data.height - 1);
+             return this;
+           }
+         }, {
+           key: "clear",
+           value: function clear() {
+             this.data = createNode([]);
+             return this;
+           }
+         }, {
+           key: "remove",
+           value: function remove(item, equalsFn) {
+             if (!item) return this;
+             var node = this.data;
+             var bbox = this.toBBox(item);
+             var path = [];
+             var indexes = [];
+             var i, parent, goingUp; // depth-first iterative tree traversal

 
 

-                 v = partial.length === 0 ? "[]" : gap ? "[\n" + gap + partial.join(",\n" + gap) + "\n" + mind + "]" : "[" + partial.join(",") + "]";
-                 gap = mind;
-                 return v;
-               } // If the replacer is an array, use it to select the members to be stringified.
+             while (node || path.length) {
+               if (!node) {
+                 // go up
+                 node = path.pop();
+                 parent = path[path.length - 1];
+                 i = indexes.pop();
+                 goingUp = true;
+               }

 
 

+               if (node.leaf) {
+                 // check current node
+                 var index = findItem(item, node.children, equalsFn);

 
 

-               if (rep && _typeof(rep) === "object") {
-                 length = rep.length;
+                 if (index !== -1) {
+                   // item found, remove the item and condense tree upwards
+                   node.children.splice(index, 1);
+                   path.push(node);

 
 

-                 for (i = 0; i < length; i += 1) {
-                   if (typeof rep[i] === "string") {
-                     k = rep[i];
-                     v = str(k, value);
+                   this._condense(path);

 
 

-                     if (v) {
-                       partial.push(quote(k) + (gap ? ": " : ":") + v);
-                     }
-                   }
+                   return this;

                  }
                  }

-               } else {
-                 // Otherwise, iterate through all of the keys in the object.
-                 for (k in value) {
-                   if (Object.prototype.hasOwnProperty.call(value, k)) {
-                     v = str(k, value);
+               }

 
 

-                     if (v) {
-                       partial.push(quote(k) + (gap ? ": " : ":") + v);
-                     }
-                   }
-                 }
-               } // Join all of the member texts together, separated with commas,
-               // and wrap them in braces.
+               if (!goingUp && !node.leaf && contains(node, bbox)) {
+                 // go down
+                 path.push(node);
+                 indexes.push(i);
+                 i = 0;
+                 parent = node;
+                 node = node.children[0];
+               } else if (parent) {
+                 // go right
+                 i++;
+                 node = parent.children[i];
+                 goingUp = false;
+               } else node = null; // nothing found

 
 

+             }

 
 

-               v = partial.length === 0 ? "{}" : gap ? "{\n" + gap + partial.join(",\n" + gap) + "\n" + mind + "}" : "{" + partial.join(",") + "}";
-               gap = mind;
-               return v;
+             return this;

            }
            }

-         } // If the JSON object does not yet have a stringify method, give it one.
-
-
-         if (typeof JSON.stringify !== "function") {
-           meta = {
-             // table of character substitutions
-             "\b": "\\b",
-             "\t": "\\t",
-             "\n": "\\n",
-             "\f": "\\f",
-             "\r": "\\r",
-             "\"": "\\\"",
-             "\\": "\\\\"
-           };
+         }, {
+           key: "toBBox",
+           value: function toBBox(item) {
+             return item;
+           }
+         }, {
+           key: "compareMinX",
+           value: function compareMinX(a, b) {
+             return a.minX - b.minX;
+           }
+         }, {
+           key: "compareMinY",
+           value: function compareMinY(a, b) {
+             return a.minY - b.minY;
+           }
+         }, {
+           key: "toJSON",
+           value: function toJSON() {
+             return this.data;
+           }
+         }, {
+           key: "fromJSON",
+           value: function fromJSON(data) {
+             this.data = data;
+             return this;
+           }
+         }, {
+           key: "_all",
+           value: function _all(node, result) {
+             var nodesToSearch = [];

 
 

-           JSON.stringify = function (value, replacer, space) {
-             // The stringify method takes a value and an optional replacer, and an optional
-             // space parameter, and returns a JSON text. The replacer can be a function
-             // that can replace values, or an array of strings that will select the keys.
-             // A default replacer method can be provided. Use of the space parameter can
-             // produce text that is more easily readable.
-             var i;
-             gap = "";
-             indent = ""; // If the space parameter is a number, make an indent string containing that
-             // many spaces.
+             while (node) {
+               if (node.leaf) result.push.apply(result, _toConsumableArray(node.children));else nodesToSearch.push.apply(nodesToSearch, _toConsumableArray(node.children));
+               node = nodesToSearch.pop();
+             }

 
 

-             if (typeof space === "number") {
-               for (i = 0; i < space; i += 1) {
-                 indent += " ";
-               } // If the space parameter is a string, it will be used as the indent string.
+             return result;
+           }
+         }, {
+           key: "_build",
+           value: function _build(items, left, right, height) {
+             var N = right - left + 1;
+             var M = this._maxEntries;
+             var node;

 
 

-             } else if (typeof space === "string") {
-               indent = space;
-             } // If there is a replacer, it must be a function or an array.
-             // Otherwise, throw an error.
+             if (N <= M) {
+               // reached leaf level; return leaf
+               node = createNode(items.slice(left, right + 1));
+               calcBBox(node, this.toBBox);
+               return node;
+             }

 
 

+             if (!height) {
+               // target height of the bulk-loaded tree
+               height = Math.ceil(Math.log(N) / Math.log(M)); // target number of root entries to maximize storage utilization

 
 

-             rep = replacer;
+               M = Math.ceil(N / Math.pow(M, height - 1));
+             }

 
 

-             if (replacer && typeof replacer !== "function" && (_typeof(replacer) !== "object" || typeof replacer.length !== "number")) {
-               throw new Error("JSON.stringify");
-             } // Make a fake root object containing our value under the key of "".
-             // Return the result of stringifying the value.
+             node = createNode([]);
+             node.leaf = false;
+             node.height = height; // split the items into M mostly square tiles

 
 

+             var N2 = Math.ceil(N / M);
+             var N1 = N2 * Math.ceil(Math.sqrt(M));
+             multiSelect(items, left, right, N1, this.compareMinX);

 
 

-             return str("", {
-               "": value
-             });
-           };
-         } // If the JSON object does not yet have a parse method, give it one.
+             for (var i = left; i <= right; i += N1) {
+               var right2 = Math.min(i + N1 - 1, right);
+               multiSelect(items, i, right2, N2, this.compareMinY);

 
 

+               for (var j = i; j <= right2; j += N2) {
+                 var right3 = Math.min(j + N2 - 1, right2); // pack each entry recursively

 
 

-         if (typeof JSON.parse !== "function") {
-           JSON.parse = function (text, reviver) {
-             // The parse method takes a text and an optional reviver function, and returns
-             // a JavaScript value if the text is a valid JSON text.
-             var j;
+                 node.children.push(this._build(items, j, right3, height - 1));
+               }
+             }

 
 

-             function walk(holder, key) {
-               // The walk method is used to recursively walk the resulting structure so
-               // that modifications can be made.
-               var k;
-               var v;
-               var value = holder[key];
+             calcBBox(node, this.toBBox);
+             return node;
+           }
+         }, {
+           key: "_chooseSubtree",
+           value: function _chooseSubtree(bbox, node, level, path) {
+             while (true) {
+               path.push(node);
+               if (node.leaf || path.length - 1 === level) break;
+               var minArea = Infinity;
+               var minEnlargement = Infinity;
+               var targetNode = void 0;

 
 

-               if (value && _typeof(value) === "object") {
-                 for (k in value) {
-                   if (Object.prototype.hasOwnProperty.call(value, k)) {
-                     v = walk(value, k);
+               for (var i = 0; i < node.children.length; i++) {
+                 var child = node.children[i];
+                 var area = bboxArea(child);
+                 var enlargement = enlargedArea(bbox, child) - area; // choose entry with the least area enlargement

 
 

-                     if (v !== undefined) {
-                       value[k] = v;
-                     } else {
-                       delete value[k];
-                     }
+                 if (enlargement < minEnlargement) {
+                   minEnlargement = enlargement;
+                   minArea = area < minArea ? area : minArea;
+                   targetNode = child;
+                 } else if (enlargement === minEnlargement) {
+                   // otherwise choose one with the smallest area
+                   if (area < minArea) {
+                     minArea = area;
+                     targetNode = child;

                    }
                  }
                }
 
                    }
                  }
                }
 

-               return reviver.call(holder, key, value);
-             } // Parsing happens in four stages. In the first stage, we replace certain
-             // Unicode characters with escape sequences. JavaScript handles many characters
-             // incorrectly, either silently deleting them, or treating them as line endings.
-
-
-             text = String(text);
-             rx_dangerous.lastIndex = 0;
-
-             if (rx_dangerous.test(text)) {
-               text = text.replace(rx_dangerous, function (a) {
-                 return "\\u" + ("0000" + a.charCodeAt(0).toString(16)).slice(-4);
-               });
-             } // In the second stage, we run the text against regular expressions that look
-             // for non-JSON patterns. We are especially concerned with "()" and "new"
-             // because they can cause invocation, and "=" because it can cause mutation.
-             // But just to be safe, we want to reject all unexpected forms.
-             // We split the second stage into 4 regexp operations in order to work around
-             // crippling inefficiencies in IE's and Safari's regexp engines. First we
-             // replace the JSON backslash pairs with "@" (a non-JSON character). Second, we
-             // replace all simple value tokens with "]" characters. Third, we delete all
-             // open brackets that follow a colon or comma or that begin the text. Finally,
-             // we look to see that the remaining characters are only whitespace or "]" or
-             // "," or ":" or "{" or "}". If that is so, then the text is safe for eval.
-
-
-             if (rx_one.test(text.replace(rx_two, "@").replace(rx_three, "]").replace(rx_four, ""))) {
-               // In the third stage we use the eval function to compile the text into a
-               // JavaScript structure. The "{" operator is subject to a syntactic ambiguity
-               // in JavaScript: it can begin a block or an object literal. We wrap the text
-               // in parens to eliminate the ambiguity.
-               j = eval("(" + text + ")"); // In the optional fourth stage, we recursively walk the new structure, passing
-               // each name/value pair to a reviver function for possible transformation.
-
-               return typeof reviver === "function" ? walk({
-                 "": j
-               }, "") : j;
-             } // If the text is not JSON parseable, then a SyntaxError is thrown.
-
+               node = targetNode || node.children[0];
+             }

 
 

-             throw new SyntaxError("JSON.parse");
-           };
-         }
-       })();
+             return node;
+           }
+         }, {
+           key: "_insert",
+           value: function _insert(item, level, isNode) {
+             var bbox = isNode ? item : this.toBBox(item);
+             var insertPath = []; // find the best node for accommodating the item, saving all nodes along the path too

 
 

-       var json2 = json2Plugin;
+             var node = this._chooseSubtree(bbox, this.data, level, insertPath); // put the item into the node

 
 

-       function json2Plugin() {
-         return {};
-       }

 
 

-       var plugins = [json2];
-       var store_legacy = storeEngine.createStore(all, plugins);
+             node.children.push(item);
+             extend$1(node, bbox); // split on node overflow; propagate upwards if necessary

 
 

-       //
-       // This code is only compatible with IE10+ because the [XDomainRequest](http://bit.ly/LfO7xo)
-       // object, IE<10's idea of [CORS](http://en.wikipedia.org/wiki/Cross-origin_resource_sharing),
-       // does not support custom headers, which this uses everywhere.
+             while (level >= 0) {
+               if (insertPath[level].children.length > this._maxEntries) {
+                 this._split(insertPath, level);

 
 

+                 level--;
+               } else break;
+             } // adjust bboxes along the insertion path

 
 

-       var osmAuth = function osmAuth(o) {
-         var oauth = {}; // authenticated users will also have a request token secret, but it's
-         // not used in transactions with the server

 
 

-         oauth.authenticated = function () {
-           return !!(token('oauth_token') && token('oauth_token_secret'));
-         };
+             this._adjustParentBBoxes(bbox, insertPath, level);
+           } // split overflowed node into two

 
 

-         oauth.logout = function () {
-           token('oauth_token', '');
-           token('oauth_token_secret', '');
-           token('oauth_request_token_secret', '');
-           return oauth;
-         }; // TODO: detect lack of click event
+         }, {
+           key: "_split",
+           value: function _split(insertPath, level) {
+             var node = insertPath[level];
+             var M = node.children.length;
+             var m = this._minEntries;

 
 

+             this._chooseSplitAxis(node, m, M);

 
 

-         oauth.authenticate = function (callback) {
-           if (oauth.authenticated()) return callback();
-           oauth.logout(); // ## Getting a request token
+             var splitIndex = this._chooseSplitIndex(node, m, M);

 
 

-           var params = timenonce(getAuth(o)),
-               url = o.url + '/oauth/request_token';
-           params.oauth_signature = ohauth_1.signature(o.oauth_secret, '', ohauth_1.baseString('POST', url, params));
+             var newNode = createNode(node.children.splice(splitIndex, node.children.length - splitIndex));
+             newNode.height = node.height;
+             newNode.leaf = node.leaf;
+             calcBBox(node, this.toBBox);
+             calcBBox(newNode, this.toBBox);
+             if (level) insertPath[level - 1].children.push(newNode);else this._splitRoot(node, newNode);
+           }
+         }, {
+           key: "_splitRoot",
+           value: function _splitRoot(node, newNode) {
+             // split root node
+             this.data = createNode([node, newNode]);
+             this.data.height = node.height + 1;
+             this.data.leaf = false;
+             calcBBox(this.data, this.toBBox);
+           }
+         }, {
+           key: "_chooseSplitIndex",
+           value: function _chooseSplitIndex(node, m, M) {
+             var index;
+             var minOverlap = Infinity;
+             var minArea = Infinity;

 
 

-           if (!o.singlepage) {
-             // Create a 600x550 popup window in the center of the screen
-             var w = 600,
-                 h = 550,
-                 settings = [['width', w], ['height', h], ['left', screen.width / 2 - w / 2], ['top', screen.height / 2 - h / 2]].map(function (x) {
-               return x.join('=');
-             }).join(','),
-                 popup = window.open('about:blank', 'oauth_window', settings);
-             oauth.popupWindow = popup;
+             for (var i = m; i <= M - m; i++) {
+               var bbox1 = distBBox(node, 0, i, this.toBBox);
+               var bbox2 = distBBox(node, i, M, this.toBBox);
+               var overlap = intersectionArea(bbox1, bbox2);
+               var area = bboxArea(bbox1) + bboxArea(bbox2); // choose distribution with minimum overlap

 
 

-             if (!popup) {
-               var error = new Error('Popup was blocked');
-               error.status = 'popup-blocked';
-               throw error;
+               if (overlap < minOverlap) {
+                 minOverlap = overlap;
+                 index = i;
+                 minArea = area < minArea ? area : minArea;
+               } else if (overlap === minOverlap) {
+                 // otherwise choose distribution with minimum area
+                 if (area < minArea) {
+                   minArea = area;
+                   index = i;
+                 }
+               }

              }
              }

-           } // Request a request token. When this is complete, the popup
-           // window is redirected to OSM's authorization page.

 
 

+             return index || M - m;
+           } // sorts node children by the best axis for split
+
+         }, {
+           key: "_chooseSplitAxis",
+           value: function _chooseSplitAxis(node, m, M) {
+             var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX;
+             var compareMinY = node.leaf ? this.compareMinY : compareNodeMinY;

 
 

-           ohauth_1.xhr('POST', url, params, null, {}, reqTokenDone);
-           o.loading();
+             var xMargin = this._allDistMargin(node, m, M, compareMinX);

 
 

-           function reqTokenDone(err, xhr) {
-             o.done();
-             if (err) return callback(err);
-             var resp = ohauth_1.stringQs(xhr.response);
-             token('oauth_request_token_secret', resp.oauth_token_secret);
-             var authorize_url = o.url + '/oauth/authorize?' + ohauth_1.qsString({
-               oauth_token: resp.oauth_token,
-               oauth_callback: resolveUrl$1(o.landing)
-             });
+             var yMargin = this._allDistMargin(node, m, M, compareMinY); // if total distributions margin value is minimal for x, sort by minX,
+             // otherwise it's already sorted by minY

 
 

-             if (o.singlepage) {
-               location.href = authorize_url;
-             } else {
-               popup.location = authorize_url;
-             }
-           } // Called by a function in a landing page, in the popup window. The
-           // window closes itself.

 
 

+             if (xMargin < yMargin) node.children.sort(compareMinX);
+           } // total margin of all possible split distributions where each node is at least m full

 
 

-           window.authComplete = function (token) {
-             var oauth_token = ohauth_1.stringQs(token.split('?')[1]);
-             get_access_token(oauth_token.oauth_token);
-             delete window.authComplete;
-           }; // ## Getting an request token
-           //
-           // At this point we have an `oauth_token`, brought in from a function
-           // call on a landing page popup.
+         }, {
+           key: "_allDistMargin",
+           value: function _allDistMargin(node, m, M, compare) {
+             node.children.sort(compare);
+             var toBBox = this.toBBox;
+             var leftBBox = distBBox(node, 0, m, toBBox);
+             var rightBBox = distBBox(node, M - m, M, toBBox);
+             var margin = bboxMargin(leftBBox) + bboxMargin(rightBBox);

 
 

+             for (var i = m; i < M - m; i++) {
+               var child = node.children[i];
+               extend$1(leftBBox, node.leaf ? toBBox(child) : child);
+               margin += bboxMargin(leftBBox);
+             }

 
 

-           function get_access_token(oauth_token) {
-             var url = o.url + '/oauth/access_token',
-                 params = timenonce(getAuth(o)),
-                 request_token_secret = token('oauth_request_token_secret');
-             params.oauth_token = oauth_token;
-             params.oauth_signature = ohauth_1.signature(o.oauth_secret, request_token_secret, ohauth_1.baseString('POST', url, params)); // ## Getting an access token
-             //
-             // The final token required for authentication. At this point
-             // we have a `request token secret`
+             for (var _i = M - m - 1; _i >= m; _i--) {
+               var _child = node.children[_i];
+               extend$1(rightBBox, node.leaf ? toBBox(_child) : _child);
+               margin += bboxMargin(rightBBox);
+             }

 
 

-             ohauth_1.xhr('POST', url, params, null, {}, accessTokenDone);
-             o.loading();
+             return margin;

            }
            }

-
-           function accessTokenDone(err, xhr) {
-             o.done();
-             if (err) return callback(err);
-             var access_token = ohauth_1.stringQs(xhr.response);
-             token('oauth_token', access_token.oauth_token);
-             token('oauth_token_secret', access_token.oauth_token_secret);
-             callback(null, oauth);
+         }, {
+           key: "_adjustParentBBoxes",
+           value: function _adjustParentBBoxes(bbox, path, level) {
+             // adjust bboxes along the given tree path
+             for (var i = level; i >= 0; i--) {
+               extend$1(path[i], bbox);
+             }

            }
            }

-         };
-
-         oauth.bringPopupWindowToFront = function () {
-           var brougtPopupToFront = false;
-
-           try {
-             // This may cause a cross-origin error:
-             // `DOMException: Blocked a frame with origin "..." from accessing a cross-origin frame.`
-             if (oauth.popupWindow && !oauth.popupWindow.closed) {
-               oauth.popupWindow.focus();
-               brougtPopupToFront = true;
+         }, {
+           key: "_condense",
+           value: function _condense(path) {
+             // go through the path, removing empty nodes and updating bboxes
+             for (var i = path.length - 1, siblings; i >= 0; i--) {
+               if (path[i].children.length === 0) {
+                 if (i > 0) {
+                   siblings = path[i - 1].children;
+                   siblings.splice(siblings.indexOf(path[i]), 1);
+                 } else this.clear();
+               } else calcBBox(path[i], this.toBBox);

              }
              }

-           } catch (err) {// Bringing popup window to front failed (probably because of the cross-origin error mentioned above)

            }
            }

+         }]);

 
 

-           return brougtPopupToFront;
-         };
-
-         oauth.bootstrapToken = function (oauth_token, callback) {
-           // ## Getting an request token
-           // At this point we have an `oauth_token`, brought in from a function
-           // call on a landing page popup.
-           function get_access_token(oauth_token) {
-             var url = o.url + '/oauth/access_token',
-                 params = timenonce(getAuth(o)),
-                 request_token_secret = token('oauth_request_token_secret');
-             params.oauth_token = oauth_token;
-             params.oauth_signature = ohauth_1.signature(o.oauth_secret, request_token_secret, ohauth_1.baseString('POST', url, params)); // ## Getting an access token
-             // The final token required for authentication. At this point
-             // we have a `request token secret`
+         return RBush;
+       }();

 
 

-             ohauth_1.xhr('POST', url, params, null, {}, accessTokenDone);
-             o.loading();
-           }
+       function findItem(item, items, equalsFn) {
+         if (!equalsFn) return items.indexOf(item);

 
 

-           function accessTokenDone(err, xhr) {
-             o.done();
-             if (err) return callback(err);
-             var access_token = ohauth_1.stringQs(xhr.response);
-             token('oauth_token', access_token.oauth_token);
-             token('oauth_token_secret', access_token.oauth_token_secret);
-             callback(null, oauth);
-           }
+         for (var i = 0; i < items.length; i++) {
+           if (equalsFn(item, items[i])) return i;
+         }

 
 

-           get_access_token(oauth_token);
-         }; // # xhr
-         //
-         // A single XMLHttpRequest wrapper that does authenticated calls if the
-         // user has logged in.
+         return -1;
+       } // calculate node's bbox from bboxes of its children

 
 
 
 

-         oauth.xhr = function (options, callback) {
-           if (!oauth.authenticated()) {
-             if (o.auto) {
-               return oauth.authenticate(run);
-             } else {
-               callback('not authenticated', null);
-               return;
-             }
-           } else {
-             return run();
-           }
+       function calcBBox(node, toBBox) {
+         distBBox(node, 0, node.children.length, toBBox, node);
+       } // min bounding rectangle of node children from k to p-1

 
 

-           function run() {
-             var params = timenonce(getAuth(o)),
-                 oauth_token_secret = token('oauth_token_secret'),
-                 url = options.prefix !== false ? o.url + options.path : options.path,
-                 url_parts = url.replace(/#.*$/, '').split('?', 2),
-                 base_url = url_parts[0],
-                 query = url_parts.length === 2 ? url_parts[1] : ''; // https://tools.ietf.org/html/rfc5849#section-3.4.1.3.1

 
 

-             if ((!options.options || !options.options.header || options.options.header['Content-Type'] === 'application/x-www-form-urlencoded') && options.content) {
-               params = immutable(params, ohauth_1.stringQs(options.content));
-             }
+       function distBBox(node, k, p, toBBox, destNode) {
+         if (!destNode) destNode = createNode(null);
+         destNode.minX = Infinity;
+         destNode.minY = Infinity;
+         destNode.maxX = -Infinity;
+         destNode.maxY = -Infinity;

 
 

-             params.oauth_token = token('oauth_token');
-             params.oauth_signature = ohauth_1.signature(o.oauth_secret, oauth_token_secret, ohauth_1.baseString(options.method, base_url, immutable(params, ohauth_1.stringQs(query))));
-             return ohauth_1.xhr(options.method, url, params, options.content, options.options, done);
-           }
+         for (var i = k; i < p; i++) {
+           var child = node.children[i];
+           extend$1(destNode, node.leaf ? toBBox(child) : child);
+         }

 
 

-           function done(err, xhr) {
-             if (err) return callback(err);else if (xhr.responseXML) return callback(err, xhr.responseXML);else return callback(err, xhr.response);
-           }
-         }; // pre-authorize this object, if we can just get a token and token_secret
-         // from the start
+         return destNode;
+       }

 
 

+       function extend$1(a, b) {
+         a.minX = Math.min(a.minX, b.minX);
+         a.minY = Math.min(a.minY, b.minY);
+         a.maxX = Math.max(a.maxX, b.maxX);
+         a.maxY = Math.max(a.maxY, b.maxY);
+         return a;
+       }

 
 

-         oauth.preauth = function (c) {
-           if (!c) return;
-           if (c.oauth_token) token('oauth_token', c.oauth_token);
-           if (c.oauth_token_secret) token('oauth_token_secret', c.oauth_token_secret);
-           return oauth;
-         };
+       function compareNodeMinX(a, b) {
+         return a.minX - b.minX;
+       }

 
 

-         oauth.options = function (_) {
-           if (!arguments.length) return o;
-           o = _;
-           o.url = o.url || 'https://www.openstreetmap.org';
-           o.landing = o.landing || 'land.html';
-           o.singlepage = o.singlepage || false; // Optional loading and loading-done functions for nice UI feedback.
-           // by default, no-ops
+       function compareNodeMinY(a, b) {
+         return a.minY - b.minY;
+       }

 
 

-           o.loading = o.loading || function () {};
+       function bboxArea(a) {
+         return (a.maxX - a.minX) * (a.maxY - a.minY);
+       }

 
 

-           o.done = o.done || function () {};
+       function bboxMargin(a) {
+         return a.maxX - a.minX + (a.maxY - a.minY);
+       }

 
 

-           return oauth.preauth(o);
-         }; // 'stamp' an authentication object from `getAuth()`
-         // with a [nonce](http://en.wikipedia.org/wiki/Cryptographic_nonce)
-         // and timestamp
+       function enlargedArea(a, b) {
+         return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) * (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
+       }

 
 

+       function intersectionArea(a, b) {
+         var minX = Math.max(a.minX, b.minX);
+         var minY = Math.max(a.minY, b.minY);
+         var maxX = Math.min(a.maxX, b.maxX);
+         var maxY = Math.min(a.maxY, b.maxY);
+         return Math.max(0, maxX - minX) * Math.max(0, maxY - minY);
+       }

 
 

-         function timenonce(o) {
-           o.oauth_timestamp = ohauth_1.timestamp();
-           o.oauth_nonce = ohauth_1.nonce();
-           return o;
-         } // get/set tokens. These are prefixed with the base URL so that `osm-auth`
-         // can be used with multiple APIs and the keys in `localStorage`
-         // will not clash
+       function contains(a, b) {
+         return a.minX <= b.minX && a.minY <= b.minY && b.maxX <= a.maxX && b.maxY <= a.maxY;
+       }

 
 

+       function intersects(a, b) {
+         return b.minX <= a.maxX && b.minY <= a.maxY && b.maxX >= a.minX && b.maxY >= a.minY;
+       }

 
 

-         var token;
+       function createNode(children) {
+         return {
+           children: children,
+           height: 1,
+           leaf: true,
+           minX: Infinity,
+           minY: Infinity,
+           maxX: -Infinity,
+           maxY: -Infinity
+         };
+       } // sort an array so that items come in groups of n unsorted items, with groups sorted between each other;
+       // combines selection algorithm with binary divide & conquer approach

 
 

-         if (store_legacy.enabled) {
-           token = function token(x, y) {
-             if (arguments.length === 1) return store_legacy.get(o.url + x);else if (arguments.length === 2) return store_legacy.set(o.url + x, y);
-           };
-         } else {
-           var storage = {};

 
 

-           token = function token(x, y) {
-             if (arguments.length === 1) return storage[o.url + x];else if (arguments.length === 2) return storage[o.url + x] = y;
-           };
-         } // Get an authentication object. If you just add and remove properties
-         // from a single object, you'll need to use `delete` to make sure that
-         // it doesn't contain undesired properties for authentication
+       function multiSelect(arr, left, right, n, compare) {
+         var stack = [left, right];

 
 

+         while (stack.length) {
+           right = stack.pop();
+           left = stack.pop();
+           if (right - left <= n) continue;
+           var mid = left + Math.ceil((right - left) / n / 2) * n;
+           quickselect(arr, mid, left, right, compare);
+           stack.push(left, mid, mid, right);
+         }
+       }

 
 

-         function getAuth(o) {
-           return {
-             oauth_consumer_key: o.oauth_consumer_key,
-             oauth_signature_method: 'HMAC-SHA1'
-           };
-         } // potentially pre-authorize
+       function responseText(response) {
+         if (!response.ok) throw new Error(response.status + " " + response.statusText);
+         return response.text();
+       }

 
 

+       function d3_text (input, init) {
+         return fetch(input, init).then(responseText);
+       }

 
 

-         oauth.options(o);
-         return oauth;
-       };
+       function responseJson(response) {
+         if (!response.ok) throw new Error(response.status + " " + response.statusText);
+         if (response.status === 204 || response.status === 205) return;
+         return response.json();
+       }

 
 

-       var JXON = new function () {
-         var sValueProp = 'keyValue',
-             sAttributesProp = 'keyAttributes',
-             sAttrPref = '@',
+       function d3_json (input, init) {
+         return fetch(input, init).then(responseJson);
+       }

 
 

-         /* you can customize these values */
-         aCache = [],
-             rIsNull = /^\s*$/,
-             rIsBool = /^(?:true|false)$/i;
+       function parser(type) {
+         return function (input, init) {
+           return d3_text(input, init).then(function (text) {
+             return new DOMParser().parseFromString(text, type);
+           });
+         };
+       }

 
 

-         function parseText(sValue) {
-           if (rIsNull.test(sValue)) {
-             return null;
-           }
+       var d3_xml = parser("application/xml");
+       var svg = parser("image/svg+xml");

 
 

-           if (rIsBool.test(sValue)) {
-             return sValue.toLowerCase() === 'true';
-           }
+       var tiler$6 = utilTiler();
+       var dispatch$7 = dispatch$8('loaded');
+       var _tileZoom$3 = 14;
+       var _krUrlRoot = 'https://www.keepright.at';
+       var _krData = {
+         errorTypes: {},
+         localizeStrings: {}
+       }; // This gets reassigned if reset

 
 

-           if (isFinite(sValue)) {
-             return parseFloat(sValue);
-           }
+       var _cache$2;

 
 

-           if (isFinite(Date.parse(sValue))) {
-             return new Date(sValue);
-           }
+       var _krRuleset = [// no 20 - multiple node on same spot - these are mostly boundaries overlapping roads
+       30, 40, 50, 60, 70, 90, 100, 110, 120, 130, 150, 160, 170, 180, 190, 191, 192, 193, 194, 195, 196, 197, 198, 200, 201, 202, 203, 204, 205, 206, 207, 208, 210, 220, 230, 231, 232, 270, 280, 281, 282, 283, 284, 285, 290, 291, 292, 293, 294, 295, 296, 297, 298, 300, 310, 311, 312, 313, 320, 350, 360, 370, 380, 390, 400, 401, 402, 410, 411, 412, 413];

 
 

-           return sValue;
+       function abortRequest$6(controller) {
+         if (controller) {
+           controller.abort();

          }
          }

+       }

 
 

-         function EmptyTree() {}
+       function abortUnwantedRequests$3(cache, tiles) {
+         Object.keys(cache.inflightTile).forEach(function (k) {
+           var wanted = tiles.find(function (tile) {
+             return k === tile.id;
+           });

 
 

-         EmptyTree.prototype.toString = function () {
-           return 'null';
-         };
+           if (!wanted) {
+             abortRequest$6(cache.inflightTile[k]);
+             delete cache.inflightTile[k];
+           }
+         });
+       }

 
 

-         EmptyTree.prototype.valueOf = function () {
-           return null;
+       function encodeIssueRtree$2(d) {
+         return {
+           minX: d.loc[0],
+           minY: d.loc[1],
+           maxX: d.loc[0],
+           maxY: d.loc[1],
+           data: d

          };
          };

+       } // Replace or remove QAItem from rtree

 
 

-         function objectify(vValue) {
-           return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue);
-         }

 
 

-         function createObjTree(oParentNode, nVerb, bFreeze, bNesteAttr) {
-           var nLevelStart = aCache.length,
-               bChildren = oParentNode.hasChildNodes(),
-               bAttributes = oParentNode.hasAttributes(),
-               bHighVerb = Boolean(nVerb & 2);
-           var sProp,
-               vContent,
-               nLength = 0,
-               sCollectedTxt = '',
-               vResult = bHighVerb ? {} :
-           /* put here the default value for empty nodes: */
-           true;
+       function updateRtree$3(item, replace) {
+         _cache$2.rtree.remove(item, function (a, b) {
+           return a.data.id === b.data.id;
+         });

 
 

-           if (bChildren) {
-             for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) {
-               oNode = oParentNode.childNodes.item(nItem);
+         if (replace) {
+           _cache$2.rtree.insert(item);
+         }
+       }

 
 

-               if (oNode.nodeType === 4) {
-                 sCollectedTxt += oNode.nodeValue;
-               }
-               /* nodeType is 'CDATASection' (4) */
-               else if (oNode.nodeType === 3) {
-                   sCollectedTxt += oNode.nodeValue.trim();
-                 }
-                 /* nodeType is 'Text' (3) */
-                 else if (oNode.nodeType === 1 && !oNode.prefix) {
-                     aCache.push(oNode);
-                   }
-               /* nodeType is 'Element' (1) */
+       function tokenReplacements(d) {
+         if (!(d instanceof QAItem)) return;
+         var htmlRegex = new RegExp(/<\/[a-z][\s\S]*>/);
+         var replacements = {};
+         var issueTemplate = _krData.errorTypes[d.whichType];

 
 

-             }
-           }
+         if (!issueTemplate) {
+           /* eslint-disable no-console */
+           console.log('No Template: ', d.whichType);
+           console.log('  ', d.description);
+           /* eslint-enable no-console */

 
 

-           var nLevelEnd = aCache.length,
-               vBuiltVal = parseText(sCollectedTxt);
+           return;
+         } // some descriptions are just fixed text

 
 

-           if (!bHighVerb && (bChildren || bAttributes)) {
-             vResult = nVerb === 0 ? objectify(vBuiltVal) : {};
-           }

 
 

-           for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) {
-             sProp = aCache[nElId].nodeName.toLowerCase();
-             vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr);
+         if (!issueTemplate.regex) return; // regex pattern should match description with variable details captured

 
 

-             if (vResult.hasOwnProperty(sProp)) {
-               if (vResult[sProp].constructor !== Array) {
-                 vResult[sProp] = [vResult[sProp]];
-               }
+         var errorRegex = new RegExp(issueTemplate.regex, 'i');
+         var errorMatch = errorRegex.exec(d.description);

 
 

-               vResult[sProp].push(vContent);
-             } else {
-               vResult[sProp] = vContent;
-               nLength++;
-             }
-           }
+         if (!errorMatch) {
+           /* eslint-disable no-console */
+           console.log('Unmatched: ', d.whichType);
+           console.log('  ', d.description);
+           console.log('  ', errorRegex);
+           /* eslint-enable no-console */

 
 

-           if (bAttributes) {
-             var nAttrLen = oParentNode.attributes.length,
-                 sAPrefix = bNesteAttr ? '' : sAttrPref,
-                 oAttrParent = bNesteAttr ? {} : vResult;
+           return;
+         }

 
 

-             for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) {
-               oAttrib = oParentNode.attributes.item(nAttrib);
-               oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim());
-             }
+         for (var i = 1; i < errorMatch.length; i++) {
+           // skip first
+           var capture = errorMatch[i];
+           var idType = void 0;
+           idType = 'IDs' in issueTemplate ? issueTemplate.IDs[i - 1] : '';

 
 

-             if (bNesteAttr) {
-               if (bFreeze) {
-                 Object.freeze(oAttrParent);
-               }
+           if (idType && capture) {
+             // link IDs if present in the capture
+             capture = parseError(capture, idType);
+           } else if (htmlRegex.test(capture)) {
+             // escape any html in non-IDs
+             capture = '\\' + capture + '\\';
+           } else {
+             var compare = capture.toLowerCase();

 
 

-               vResult[sAttributesProp] = oAttrParent;
-               nLength -= nAttrLen - 1;
+             if (_krData.localizeStrings[compare]) {
+               // some replacement strings can be localized
+               capture = _t('QA.keepRight.error_parts.' + _krData.localizeStrings[compare]);

              }
            }
 
              }
            }
 

-           if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) {
-             vResult[sValueProp] = vBuiltVal;
-           } else if (!bHighVerb && nLength === 0 && sCollectedTxt) {
-             vResult = vBuiltVal;
-           }
+           replacements['var' + i] = capture;
+         }

 
 

-           if (bFreeze && (bHighVerb || nLength > 0)) {
-             Object.freeze(vResult);
-           }
+         return replacements;
+       }

 
 

-           aCache.length = nLevelStart;
-           return vResult;
+       function parseError(capture, idType) {
+         var compare = capture.toLowerCase();
+
+         if (_krData.localizeStrings[compare]) {
+           // some replacement strings can be localized
+           capture = _t('QA.keepRight.error_parts.' + _krData.localizeStrings[compare]);

          }
 
          }
 

-         function loadObjTree(oXMLDoc, oParentEl, oParentObj) {
-           var vValue, oChild;
+         switch (idType) {
+           // link a string like "this node"
+           case 'this':
+             capture = linkErrorObject(capture);
+             break;

 
 

-           if (oParentObj instanceof String || oParentObj instanceof Number || oParentObj instanceof Boolean) {
-             oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toString()));
-             /* verbosity level is 0 */
-           } else if (oParentObj.constructor === Date) {
-             oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toGMTString()));
-           }
+           case 'url':
+             capture = linkURL(capture);
+             break;
+           // link an entity ID

 
 

-           for (var sName in oParentObj) {
-             vValue = oParentObj[sName];
+           case 'n':
+           case 'w':
+           case 'r':
+             capture = linkEntity(idType + capture);
+             break;
+           // some errors have more complex ID lists/variance

 
 

-             if (isFinite(sName) || vValue instanceof Function) {
-               continue;
-             }
-             /* verbosity level is 0 */
+           case '20':
+             capture = parse20(capture);
+             break;
+
+           case '211':
+             capture = parse211(capture);
+             break;

 
 

+           case '231':
+             capture = parse231(capture);
+             break;

 
 

-             if (sName === sValueProp) {
-               if (vValue !== null && vValue !== true) {
-                 oParentEl.appendChild(oXMLDoc.createTextNode(vValue.constructor === Date ? vValue.toGMTString() : String(vValue)));
-               }
-             } else if (sName === sAttributesProp) {
-               /* verbosity level is 3 */
-               for (var sAttrib in vValue) {
-                 oParentEl.setAttribute(sAttrib, vValue[sAttrib]);
-               }
-             } else if (sName.charAt(0) === sAttrPref) {
-               oParentEl.setAttribute(sName.slice(1), vValue);
-             } else if (vValue.constructor === Array) {
-               for (var nItem = 0; nItem < vValue.length; nItem++) {
-                 oChild = oXMLDoc.createElement(sName);
-                 loadObjTree(oXMLDoc, oChild, vValue[nItem]);
-                 oParentEl.appendChild(oChild);
-               }
-             } else {
-               oChild = oXMLDoc.createElement(sName);
+           case '294':
+             capture = parse294(capture);
+             break;

 
 

-               if (vValue instanceof Object) {
-                 loadObjTree(oXMLDoc, oChild, vValue);
-               } else if (vValue !== null && vValue !== true) {
-                 oChild.appendChild(oXMLDoc.createTextNode(vValue.toString()));
-               }
+           case '370':
+             capture = parse370(capture);
+             break;
+         }

 
 

-               oParentEl.appendChild(oChild);
-             }
-           }
+         return capture;
+
+         function linkErrorObject(d) {
+           return "<a class=\"error_object_link\">".concat(d, "</a>");

          }
 
          }
 

-         this.build = function (oXMLParent, nVerbosity
-         /* optional */
-         , bFreeze
-         /* optional */
-         , bNesteAttributes
-         /* optional */
-         ) {
-           var _nVerb = arguments.length > 1 && typeof nVerbosity === 'number' ? nVerbosity & 3 :
-           /* put here the default verbosity level: */
-           1;
+         function linkEntity(d) {
+           return "<a class=\"error_entity_link\">".concat(d, "</a>");
+         }

 
 

-           return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3);
-         };
+         function linkURL(d) {
+           return "<a class=\"kr_external_link\" target=\"_blank\" href=\"".concat(d, "\">").concat(d, "</a>");
+         } // arbitrary node list of form: #ID, #ID, #ID...

 
 

-         this.unbuild = function (oObjTree) {
-           var oNewDoc = document.implementation.createDocument('', '', null);
-           loadObjTree(oNewDoc, oNewDoc, oObjTree);
-           return oNewDoc;
-         };

 
 

-         this.stringify = function (oObjTree) {
-           return new XMLSerializer().serializeToString(JXON.unbuild(oObjTree));
-         };
-       }(); // var myObject = JXON.build(doc);
-       // we got our javascript object! try: alert(JSON.stringify(myObject));
-       // var newDoc = JXON.unbuild(myObject);
-       // we got our Document instance! try: alert((new XMLSerializer()).serializeToString(newDoc));
+         function parse211(capture) {
+           var newList = [];
+           var items = capture.split(', ');
+           items.forEach(function (item) {
+             // ID has # at the front
+             var id = linkEntity('n' + item.slice(1));
+             newList.push(id);
+           });
+           return newList.join(', ');
+         } // arbitrary way list of form: #ID(layer),#ID(layer),#ID(layer)...

 
 

-       var tiler$5 = utilTiler();
-       var dispatch$6 = dispatch('apiStatusChange', 'authLoading', 'authDone', 'change', 'loading', 'loaded', 'loadedNotes');
-       var urlroot = 'https://www.openstreetmap.org';
-       var oauth = osmAuth({
-         url: urlroot,
-         oauth_consumer_key: '5A043yRSEugj4DJ5TljuapfnrflWDte8jTOcWLlT',
-         oauth_secret: 'aB3jKq1TRsCOUrfOIZ6oQMEDmv2ptV76PA54NGLL',
-         loading: authLoading,
-         done: authDone
-       }); // hardcode default block of Google Maps

 
 

-       var _imageryBlocklists = [/.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/];
-       var _tileCache = {
-         toLoad: {},
-         loaded: {},
-         inflight: {},
-         seen: {},
-         rtree: new RBush()
-       };
-       var _noteCache = {
-         toLoad: {},
-         loaded: {},
-         inflight: {},
-         inflightPost: {},
-         note: {},
-         closed: {},
-         rtree: new RBush()
-       };
-       var _userCache = {
-         toLoad: {},
-         user: {}
-       };
+         function parse231(capture) {
+           var newList = []; // unfortunately 'layer' can itself contain commas, so we split on '),'

 
 

-       var _cachedApiStatus;
+           var items = capture.split('),');
+           items.forEach(function (item) {
+             var match = item.match(/\#(\d+)\((.+)\)?/);

 
 

-       var _changeset = {};
+             if (match !== null && match.length > 2) {
+               newList.push(linkEntity('w' + match[1]) + ' ' + _t('QA.keepRight.errorTypes.231.layer', {
+                 layer: match[2]
+               }));
+             }
+           });
+           return newList.join(', ');
+         } // arbitrary node/relation list of form: from node #ID,to relation #ID,to node #ID...

 
 

-       var _deferred = new Set();

 
 

-       var _connectionID = 1;
-       var _tileZoom$3 = 16;
-       var _noteZoom = 12;
+         function parse294(capture) {
+           var newList = [];
+           var items = capture.split(',');
+           items.forEach(function (item) {
+             // item of form "from/to node/relation #ID"
+             item = item.split(' '); // to/from role is more clear in quotes

 
 

-       var _rateLimitError;
+             var role = "\"".concat(item[0], "\""); // first letter of node/relation provides the type

 
 

-       var _userChangesets;
+             var idType = item[1].slice(0, 1); // ID has # at the front

 
 

-       var _userDetails;
+             var id = item[2].slice(1);
+             id = linkEntity(idType + id);
+             newList.push("".concat(role, " ").concat(item[1], " ").concat(id));
+           });
+           return newList.join(', ');
+         } // may or may not include the string "(including the name 'name')"

 
 

-       var _off; // set a default but also load this from the API status

 
 

+         function parse370(capture) {
+           if (!capture) return '';
+           var match = capture.match(/\(including the name (\'.+\')\)/);

 
 

-       var _maxWayNodes = 2000;
+           if (match && match.length) {
+             return _t('QA.keepRight.errorTypes.370.including_the_name', {
+               name: match[1]
+             });
+           }

 
 

-       function authLoading() {
-         dispatch$6.call('authLoading');
-       }
+           return '';
+         } // arbitrary node list of form: #ID,#ID,#ID...

 
 

-       function authDone() {
-         dispatch$6.call('authDone');
-       }

 
 

-       function abortRequest$5(controllerOrXHR) {
-         if (controllerOrXHR) {
-           controllerOrXHR.abort();
+         function parse20(capture) {
+           var newList = [];
+           var items = capture.split(',');
+           items.forEach(function (item) {
+             // ID has # at the front
+             var id = linkEntity('n' + item.slice(1));
+             newList.push(id);
+           });
+           return newList.join(', ');

          }
        }
 
          }
        }
 

-       function hasInflightRequests(cache) {
-         return Object.keys(cache.inflight).length;
-       }
+       var serviceKeepRight = {
+         title: 'keepRight',
+         init: function init() {
+           _mainFileFetcher.get('keepRight').then(function (d) {
+             return _krData = d;
+           });

 
 

-       function abortUnwantedRequests$3(cache, visibleTiles) {
-         Object.keys(cache.inflight).forEach(function (k) {
-           if (cache.toLoad[k]) return;
-           if (visibleTiles.find(function (tile) {
-             return k === tile.id;
-           })) return;
-           abortRequest$5(cache.inflight[k]);
-           delete cache.inflight[k];
-         });
-       }
+           if (!_cache$2) {
+             this.reset();
+           }

 
 

-       function getLoc(attrs) {
-         var lon = attrs.lon && attrs.lon.value;
-         var lat = attrs.lat && attrs.lat.value;
-         return [parseFloat(lon), parseFloat(lat)];
-       }
+           this.event = utilRebind(this, dispatch$7, 'on');
+         },
+         reset: function reset() {
+           if (_cache$2) {
+             Object.values(_cache$2.inflightTile).forEach(abortRequest$6);
+           }

 
 

-       function getNodes(obj) {
-         var elems = obj.getElementsByTagName('nd');
-         var nodes = new Array(elems.length);
+           _cache$2 = {
+             data: {},
+             loadedTile: {},
+             inflightTile: {},
+             inflightPost: {},
+             closed: {},
+             rtree: new RBush()
+           };
+         },
+         // KeepRight API:  http://osm.mueschelsoft.de/keepright/interfacing.php
+         loadIssues: function loadIssues(projection) {
+           var _this = this;

 
 

-         for (var i = 0, l = elems.length; i < l; i++) {
-           nodes[i] = 'n' + elems[i].attributes.ref.value;
-         }
+           var options = {
+             format: 'geojson',
+             ch: _krRuleset
+           }; // determine the needed tiles to cover the view

 
 

-         return nodes;
-       }
+           var tiles = tiler$6.zoomExtent([_tileZoom$3, _tileZoom$3]).getTiles(projection); // abort inflight requests that are no longer needed

 
 

-       function getNodesJSON(obj) {
-         var elems = obj.nodes;
-         var nodes = new Array(elems.length);
+           abortUnwantedRequests$3(_cache$2, tiles); // issue new requests..

 
 

-         for (var i = 0, l = elems.length; i < l; i++) {
-           nodes[i] = 'n' + elems[i];
-         }
+           tiles.forEach(function (tile) {
+             if (_cache$2.loadedTile[tile.id] || _cache$2.inflightTile[tile.id]) return;

 
 

-         return nodes;
-       }
+             var _tile$extent$rectangl = tile.extent.rectangle(),
+                 _tile$extent$rectangl2 = _slicedToArray(_tile$extent$rectangl, 4),
+                 left = _tile$extent$rectangl2[0],
+                 top = _tile$extent$rectangl2[1],
+                 right = _tile$extent$rectangl2[2],
+                 bottom = _tile$extent$rectangl2[3];

 
 

-       function getTags(obj) {
-         var elems = obj.getElementsByTagName('tag');
-         var tags = {};
+             var params = Object.assign({}, options, {
+               left: left,
+               bottom: bottom,
+               right: right,
+               top: top
+             });
+             var url = "".concat(_krUrlRoot, "/export.php?") + utilQsString(params);
+             var controller = new AbortController();
+             _cache$2.inflightTile[tile.id] = controller;
+             d3_json(url, {
+               signal: controller.signal
+             }).then(function (data) {
+               delete _cache$2.inflightTile[tile.id];
+               _cache$2.loadedTile[tile.id] = true;

 
 

-         for (var i = 0, l = elems.length; i < l; i++) {
-           var attrs = elems[i].attributes;
-           tags[attrs.k.value] = attrs.v.value;
-         }
+               if (!data || !data.features || !data.features.length) {
+                 throw new Error('No Data');
+               }

 
 

-         return tags;
-       }
+               data.features.forEach(function (feature) {
+                 var _feature$properties = feature.properties,
+                     itemType = _feature$properties.error_type,
+                     id = _feature$properties.error_id,
+                     _feature$properties$c = _feature$properties.comment,
+                     comment = _feature$properties$c === void 0 ? null : _feature$properties$c,
+                     objectId = _feature$properties.object_id,
+                     objectType = _feature$properties.object_type,
+                     schema = _feature$properties.schema,
+                     title = _feature$properties.title;
+                 var loc = feature.geometry.coordinates,
+                     _feature$properties$d = feature.properties.description,
+                     description = _feature$properties$d === void 0 ? '' : _feature$properties$d; // if there is a parent, save its error type e.g.:
+                 //  Error 191 = "highway-highway"
+                 //  Error 190 = "intersections without junctions"  (parent)

 
 

-       function getMembers(obj) {
-         var elems = obj.getElementsByTagName('member');
-         var members = new Array(elems.length);
+                 var issueTemplate = _krData.errorTypes[itemType];
+                 var parentIssueType = (Math.floor(itemType / 10) * 10).toString(); // try to handle error type directly, fallback to parent error type.

 
 

-         for (var i = 0, l = elems.length; i < l; i++) {
-           var attrs = elems[i].attributes;
-           members[i] = {
-             id: attrs.type.value[0] + attrs.ref.value,
-             type: attrs.type.value,
-             role: attrs.role.value
-           };
-         }
+                 var whichType = issueTemplate ? itemType : parentIssueType;
+                 var whichTemplate = _krData.errorTypes[whichType]; // Rewrite a few of the errors at this point..
+                 // This is done to make them easier to linkify and translate.

 
 

-         return members;
-       }
+                 switch (whichType) {
+                   case '170':
+                     description = "This feature has a FIXME tag: ".concat(description);
+                     break;

 
 

-       function getMembersJSON(obj) {
-         var elems = obj.members;
-         var members = new Array(elems.length);
+                   case '292':
+                   case '293':
+                     description = description.replace('A turn-', 'This turn-');
+                     break;

 
 

-         for (var i = 0, l = elems.length; i < l; i++) {
-           var attrs = elems[i];
-           members[i] = {
-             id: attrs.type[0] + attrs.ref,
-             type: attrs.type,
-             role: attrs.role
-           };
-         }
+                   case '294':
+                   case '295':
+                   case '296':
+                   case '297':
+                   case '298':
+                     description = "This turn-restriction~".concat(description);
+                     break;

 
 

-         return members;
-       }
+                   case '300':
+                     description = 'This highway is missing a maxspeed tag';
+                     break;

 
 

-       function getVisible(attrs) {
-         return !attrs.visible || attrs.visible.value !== 'false';
-       }
+                   case '411':
+                   case '412':
+                   case '413':
+                     description = "This feature~".concat(description);
+                     break;
+                 } // move markers slightly so it doesn't obscure the geometry,
+                 // then move markers away from other coincident markers

 
 

-       function parseComments(comments) {
-         var parsedComments = []; // for each comment

 
 

-         for (var i = 0; i < comments.length; i++) {
-           var comment = comments[i];
+                 var coincident = false;

 
 

-           if (comment.nodeName === 'comment') {
-             var childNodes = comment.childNodes;
-             var parsedComment = {};
+                 do {
+                   // first time, move marker up. after that, move marker right.
+                   var delta = coincident ? [0.00001, 0] : [0, 0.00001];
+                   loc = geoVecAdd(loc, delta);
+                   var bbox = geoExtent(loc).bbox();
+                   coincident = _cache$2.rtree.search(bbox).length;
+                 } while (coincident);

 
 

-             for (var j = 0; j < childNodes.length; j++) {
-               var node = childNodes[j];
-               var nodeName = node.nodeName;
-               if (nodeName === '#text') continue;
-               parsedComment[nodeName] = node.textContent;
+                 var d = new QAItem(loc, _this, itemType, id, {
+                   comment: comment,
+                   description: description,
+                   whichType: whichType,
+                   parentIssueType: parentIssueType,
+                   severity: whichTemplate.severity || 'error',
+                   objectId: objectId,
+                   objectType: objectType,
+                   schema: schema,
+                   title: title
+                 });
+                 d.replacements = tokenReplacements(d);
+                 _cache$2.data[id] = d;

 
 

-               if (nodeName === 'uid') {
-                 var uid = node.textContent;
+                 _cache$2.rtree.insert(encodeIssueRtree$2(d));
+               });
+               dispatch$7.call('loaded');
+             })["catch"](function () {
+               delete _cache$2.inflightTile[tile.id];
+               _cache$2.loadedTile[tile.id] = true;
+             });
+           });
+         },
+         postUpdate: function postUpdate(d, callback) {
+           var _this2 = this;

 
 

-                 if (uid && !_userCache.user[uid]) {
-                   _userCache.toLoad[uid] = true;
-                 }
-               }
-             }
+           if (_cache$2.inflightPost[d.id]) {
+             return callback({
+               message: 'Error update already inflight',
+               status: -2
+             }, d);
+           }

 
 

-             if (parsedComment) {
-               parsedComments.push(parsedComment);
-             }
+           var params = {
+             schema: d.schema,
+             id: d.id
+           };
+
+           if (d.newStatus) {
+             params.st = d.newStatus;

            }
            }

-         }

 
 

-         return parsedComments;
-       }
+           if (d.newComment !== undefined) {
+             params.co = d.newComment;
+           } // NOTE: This throws a CORS err, but it seems successful.
+           // We don't care too much about the response, so this is fine.

 
 

-       function encodeNoteRtree(note) {
-         return {
-           minX: note.loc[0],
-           minY: note.loc[1],
-           maxX: note.loc[0],
-           maxY: note.loc[1],
-           data: note
-         };
-       }

 
 

-       var jsonparsers = {
-         node: function nodeData(obj, uid) {
-           return new osmNode({
-             id: uid,
-             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
-             version: obj.version && obj.version.toString(),
-             changeset: obj.changeset && obj.changeset.toString(),
-             timestamp: obj.timestamp,
-             user: obj.user,
-             uid: obj.uid && obj.uid.toString(),
-             loc: [parseFloat(obj.lon), parseFloat(obj.lat)],
-             tags: obj.tags
+           var url = "".concat(_krUrlRoot, "/comment.php?") + utilQsString(params);
+           var controller = new AbortController();
+           _cache$2.inflightPost[d.id] = controller; // Since this is expected to throw an error just continue as if it worked
+           // (worst case scenario the request truly fails and issue will show up if iD restarts)
+
+           d3_json(url, {
+             signal: controller.signal
+           })["finally"](function () {
+             delete _cache$2.inflightPost[d.id];
+
+             if (d.newStatus === 'ignore') {
+               // ignore permanently (false positive)
+               _this2.removeItem(d);
+             } else if (d.newStatus === 'ignore_t') {
+               // ignore temporarily (error fixed)
+               _this2.removeItem(d);
+
+               _cache$2.closed["".concat(d.schema, ":").concat(d.id)] = true;
+             } else {
+               d = _this2.replaceItem(d.update({
+                 comment: d.newComment,
+                 newComment: undefined,
+                 newState: undefined
+               }));
+             }
+
+             if (callback) callback(null, d);

            });
          },
            });
          },

-         way: function wayData(obj, uid) {
-           return new osmWay({
-             id: uid,
-             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
-             version: obj.version && obj.version.toString(),
-             changeset: obj.changeset && obj.changeset.toString(),
-             timestamp: obj.timestamp,
-             user: obj.user,
-             uid: obj.uid && obj.uid.toString(),
-             tags: obj.tags,
-             nodes: getNodesJSON(obj)
+         // Get all cached QAItems covering the viewport
+         getItems: function getItems(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           return _cache$2.rtree.search(bbox).map(function (d) {
+             return d.data;

            });
          },
            });
          },

-         relation: function relationData(obj, uid) {
-           return new osmRelation({
-             id: uid,
-             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
-             version: obj.version && obj.version.toString(),
-             changeset: obj.changeset && obj.changeset.toString(),
-             timestamp: obj.timestamp,
-             user: obj.user,
-             uid: obj.uid && obj.uid.toString(),
-             tags: obj.tags,
-             members: getMembersJSON(obj)
-           });
+         // Get a QAItem from cache
+         // NOTE: Don't change method name until UI v3 is merged
+         getError: function getError(id) {
+           return _cache$2.data[id];
+         },
+         // Replace a single QAItem in the cache
+         replaceItem: function replaceItem(item) {
+           if (!(item instanceof QAItem) || !item.id) return;
+           _cache$2.data[item.id] = item;
+           updateRtree$3(encodeIssueRtree$2(item), true); // true = replace
+
+           return item;
+         },
+         // Remove a single QAItem from the cache
+         removeItem: function removeItem(item) {
+           if (!(item instanceof QAItem) || !item.id) return;
+           delete _cache$2.data[item.id];
+           updateRtree$3(encodeIssueRtree$2(item), false); // false = remove
+         },
+         issueURL: function issueURL(item) {
+           return "".concat(_krUrlRoot, "/report_map.php?schema=").concat(item.schema, "&error=").concat(item.id);
+         },
+         // Get an array of issues closed during this session.
+         // Used to populate `closed:keepright` changeset tag
+         getClosedIDs: function getClosedIDs() {
+           return Object.keys(_cache$2.closed).sort();

          }
        };
 
          }
        };
 

-       function parseJSON(payload, callback, options) {
-         options = Object.assign({
-           skipSeen: true
-         }, options);
+       var tiler$5 = utilTiler();
+       var dispatch$6 = dispatch$8('loaded');
+       var _tileZoom$2 = 14;
+       var _impOsmUrls = {
+         ow: 'https://grab.community.improve-osm.org/directionOfFlowService',
+         mr: 'https://grab.community.improve-osm.org/missingGeoService',
+         tr: 'https://grab.community.improve-osm.org/turnRestrictionService'
+       };
+       var _impOsmData = {
+         icons: {}
+       }; // This gets reassigned if reset

 
 

-         if (!payload) {
-           return callback({
-             message: 'No JSON',
-             status: -1
-           });
-         }
+       var _cache$1;

 
 

-         var json = payload;
-         if (_typeof(json) !== 'object') json = JSON.parse(payload);
-         if (!json.elements) return callback({
-           message: 'No JSON',
-           status: -1
+       function abortRequest$5(i) {
+         Object.values(i).forEach(function (controller) {
+           if (controller) {
+             controller.abort();
+           }

          });
          });

-         var children = json.elements;
-         var handle = window.requestIdleCallback(function () {
-           var results = [];
-           var result;
+       }

 
 

-           for (var i = 0; i < children.length; i++) {
-             result = parseChild(children[i]);
-             if (result) results.push(result);
-           }
+       function abortUnwantedRequests$2(cache, tiles) {
+         Object.keys(cache.inflightTile).forEach(function (k) {
+           var wanted = tiles.find(function (tile) {
+             return k === tile.id;
+           });

 
 

-           callback(null, results);
+           if (!wanted) {
+             abortRequest$5(cache.inflightTile[k]);
+             delete cache.inflightTile[k];
+           }

          });
          });

+       }

 
 

-         _deferred.add(handle);
+       function encodeIssueRtree$1(d) {
+         return {
+           minX: d.loc[0],
+           minY: d.loc[1],
+           maxX: d.loc[0],
+           maxY: d.loc[1],
+           data: d
+         };
+       } // Replace or remove QAItem from rtree

 
 

-         function parseChild(child) {
-           var parser = jsonparsers[child.type];
-           if (!parser) return null;
-           var uid;
-           uid = osmEntity.id.fromOSM(child.type, child.id);

 
 

-           if (options.skipSeen) {
-             if (_tileCache.seen[uid]) return null; // avoid reparsing a "seen" entity
+       function updateRtree$2(item, replace) {
+         _cache$1.rtree.remove(item, function (a, b) {
+           return a.data.id === b.data.id;
+         });

 
 

-             _tileCache.seen[uid] = true;
-           }
+         if (replace) {
+           _cache$1.rtree.insert(item);
+         }
+       }

 
 

-           return parser(child, uid);
+       function linkErrorObject(d) {
+         return "<a class=\"error_object_link\">".concat(d, "</a>");
+       }
+
+       function linkEntity(d) {
+         return "<a class=\"error_entity_link\">".concat(d, "</a>");
+       }
+
+       function pointAverage(points) {
+         if (points.length) {
+           var sum = points.reduce(function (acc, point) {
+             return geoVecAdd(acc, [point.lon, point.lat]);
+           }, [0, 0]);
+           return geoVecScale(sum, 1 / points.length);
+         } else {
+           return [0, 0];

          }
        }
 
          }
        }
 

-       var parsers = {
-         node: function nodeData(obj, uid) {
-           var attrs = obj.attributes;
-           return new osmNode({
-             id: uid,
-             visible: getVisible(attrs),
-             version: attrs.version.value,
-             changeset: attrs.changeset && attrs.changeset.value,
-             timestamp: attrs.timestamp && attrs.timestamp.value,
-             user: attrs.user && attrs.user.value,
-             uid: attrs.uid && attrs.uid.value,
-             loc: getLoc(attrs),
-             tags: getTags(obj)
-           });
-         },
-         way: function wayData(obj, uid) {
-           var attrs = obj.attributes;
-           return new osmWay({
-             id: uid,
-             visible: getVisible(attrs),
-             version: attrs.version.value,
-             changeset: attrs.changeset && attrs.changeset.value,
-             timestamp: attrs.timestamp && attrs.timestamp.value,
-             user: attrs.user && attrs.user.value,
-             uid: attrs.uid && attrs.uid.value,
-             tags: getTags(obj),
-             nodes: getNodes(obj)
-           });
-         },
-         relation: function relationData(obj, uid) {
-           var attrs = obj.attributes;
-           return new osmRelation({
-             id: uid,
-             visible: getVisible(attrs),
-             version: attrs.version.value,
-             changeset: attrs.changeset && attrs.changeset.value,
-             timestamp: attrs.timestamp && attrs.timestamp.value,
-             user: attrs.user && attrs.user.value,
-             uid: attrs.uid && attrs.uid.value,
-             tags: getTags(obj),
-             members: getMembers(obj)
-           });
-         },
-         note: function parseNote(obj, uid) {
-           var attrs = obj.attributes;
-           var childNodes = obj.childNodes;
-           var props = {};
-           props.id = uid;
-           props.loc = getLoc(attrs); // if notes are coincident, move them apart slightly
+       function relativeBearing(p1, p2) {
+         var angle = Math.atan2(p2.lon - p1.lon, p2.lat - p1.lat);

 
 

-           var coincident = false;
-           var epsilon = 0.00001;
+         if (angle < 0) {
+           angle += 2 * Math.PI;
+         } // Return degrees

 
 

-           do {
-             if (coincident) {
-               props.loc = geoVecAdd(props.loc, [epsilon, epsilon]);
-             }

 
 

-             var bbox = geoExtent(props.loc).bbox();
-             coincident = _noteCache.rtree.search(bbox).length;
-           } while (coincident); // parse note contents
+         return angle * 180 / Math.PI;
+       } // Assuming range [0,360)

 
 
 
 

-           for (var i = 0; i < childNodes.length; i++) {
-             var node = childNodes[i];
-             var nodeName = node.nodeName;
-             if (nodeName === '#text') continue; // if the element is comments, parse the comments
+       function cardinalDirection(bearing) {
+         var dir = 45 * Math.round(bearing / 45);
+         var compass = {
+           0: 'north',
+           45: 'northeast',
+           90: 'east',
+           135: 'southeast',
+           180: 'south',
+           225: 'southwest',
+           270: 'west',
+           315: 'northwest',
+           360: 'north'
+         };
+         return _t("QA.improveOSM.directions.".concat(compass[dir]));
+       } // Errors shouldn't obscure each other

 
 

-             if (nodeName === 'comments') {
-               props[nodeName] = parseComments(node.childNodes);
-             } else {
-               props[nodeName] = node.textContent;
-             }
-           }

 
 

-           var note = new osmNote(props);
-           var item = encodeNoteRtree(note);
-           _noteCache.note[note.id] = note;
+       function preventCoincident$1(loc, bumpUp) {
+         var coincident = false;

 
 

-           _noteCache.rtree.insert(item);
+         do {
+           // first time, move marker up. after that, move marker right.
+           var delta = coincident ? [0.00001, 0] : bumpUp ? [0, 0.00001] : [0, 0];
+           loc = geoVecAdd(loc, delta);
+           var bbox = geoExtent(loc).bbox();
+           coincident = _cache$1.rtree.search(bbox).length;
+         } while (coincident);

 
 

-           return note;
+         return loc;
+       }
+
+       var serviceImproveOSM = {
+         title: 'improveOSM',
+         init: function init() {
+           _mainFileFetcher.get('qa_data').then(function (d) {
+             return _impOsmData = d.improveOSM;
+           });
+
+           if (!_cache$1) {
+             this.reset();
+           }
+
+           this.event = utilRebind(this, dispatch$6, 'on');

          },
          },

-         user: function parseUser(obj, uid) {
-           var attrs = obj.attributes;
-           var user = {
-             id: uid,
-             display_name: attrs.display_name && attrs.display_name.value,
-             account_created: attrs.account_created && attrs.account_created.value,
-             changesets_count: '0',
-             active_blocks: '0'
+         reset: function reset() {
+           if (_cache$1) {
+             Object.values(_cache$1.inflightTile).forEach(abortRequest$5);
+           }
+
+           _cache$1 = {
+             data: {},
+             loadedTile: {},
+             inflightTile: {},
+             inflightPost: {},
+             closed: {},
+             rtree: new RBush()

            };
            };

-           var img = obj.getElementsByTagName('img');
+         },
+         loadIssues: function loadIssues(projection) {
+           var _this = this;

 
 

-           if (img && img[0] && img[0].getAttribute('href')) {
-             user.image_url = img[0].getAttribute('href');
-           }
+           var options = {
+             client: 'iD',
+             status: 'OPEN',
+             zoom: '19' // Use a high zoom so that clusters aren't returned

 
 

-           var changesets = obj.getElementsByTagName('changesets');
+           }; // determine the needed tiles to cover the view

 
 

-           if (changesets && changesets[0] && changesets[0].getAttribute('count')) {
-             user.changesets_count = changesets[0].getAttribute('count');
-           }
+           var tiles = tiler$5.zoomExtent([_tileZoom$2, _tileZoom$2]).getTiles(projection); // abort inflight requests that are no longer needed

 
 

-           var blocks = obj.getElementsByTagName('blocks');
+           abortUnwantedRequests$2(_cache$1, tiles); // issue new requests..

 
 

-           if (blocks && blocks[0]) {
-             var received = blocks[0].getElementsByTagName('received');
+           tiles.forEach(function (tile) {
+             if (_cache$1.loadedTile[tile.id] || _cache$1.inflightTile[tile.id]) return;

 
 

-             if (received && received[0] && received[0].getAttribute('active')) {
-               user.active_blocks = received[0].getAttribute('active');
-             }
-           }
+             var _tile$extent$rectangl = tile.extent.rectangle(),
+                 _tile$extent$rectangl2 = _slicedToArray(_tile$extent$rectangl, 4),
+                 east = _tile$extent$rectangl2[0],
+                 north = _tile$extent$rectangl2[1],
+                 west = _tile$extent$rectangl2[2],
+                 south = _tile$extent$rectangl2[3];

 
 

-           _userCache.user[uid] = user;
-           delete _userCache.toLoad[uid];
-           return user;
-         }
-       };
+             var params = Object.assign({}, options, {
+               east: east,
+               south: south,
+               west: west,
+               north: north
+             }); // 3 separate requests to store for each tile

 
 

-       function parseXML(xml, callback, options) {
-         options = Object.assign({
-           skipSeen: true
-         }, options);
+             var requests = {};
+             Object.keys(_impOsmUrls).forEach(function (k) {
+               // We exclude WATER from missing geometry as it doesn't seem useful
+               // We use most confident one-way and turn restrictions only, still have false positives
+               var kParams = Object.assign({}, params, k === 'mr' ? {
+                 type: 'PARKING,ROAD,BOTH,PATH'
+               } : {
+                 confidenceLevel: 'C1'
+               });
+               var url = "".concat(_impOsmUrls[k], "/search?") + utilQsString(kParams);
+               var controller = new AbortController();
+               requests[k] = controller;
+               d3_json(url, {
+                 signal: controller.signal
+               }).then(function (data) {
+                 delete _cache$1.inflightTile[tile.id][k];

 
 

-         if (!xml || !xml.childNodes) {
-           return callback({
-             message: 'No XML',
-             status: -1
-           });
-         }
+                 if (!Object.keys(_cache$1.inflightTile[tile.id]).length) {
+                   delete _cache$1.inflightTile[tile.id];
+                   _cache$1.loadedTile[tile.id] = true;
+                 } // Road segments at high zoom == oneways

 
 

-         var root = xml.childNodes[0];
-         var children = root.childNodes;
-         var handle = window.requestIdleCallback(function () {
-           var results = [];
-           var result;

 
 

-           for (var i = 0; i < children.length; i++) {
-             result = parseChild(children[i]);
-             if (result) results.push(result);
-           }
+                 if (data.roadSegments) {
+                   data.roadSegments.forEach(function (feature) {
+                     // Position error at the approximate middle of the segment
+                     var points = feature.points,
+                         wayId = feature.wayId,
+                         fromNodeId = feature.fromNodeId,
+                         toNodeId = feature.toNodeId;
+                     var itemId = "".concat(wayId).concat(fromNodeId).concat(toNodeId);
+                     var mid = points.length / 2;
+                     var loc; // Even number of points, find midpoint of the middle two
+                     // Odd number of points, use position of very middle point

 
 

-           callback(null, results);
-         });
+                     if (mid % 1 === 0) {
+                       loc = pointAverage([points[mid - 1], points[mid]]);
+                     } else {
+                       mid = points[Math.floor(mid)];
+                       loc = [mid.lon, mid.lat];
+                     } // One-ways can land on same segment in opposite direction

 
 

-         _deferred.add(handle);

 
 

-         function parseChild(child) {
-           var parser = parsers[child.nodeName];
-           if (!parser) return null;
-           var uid;
+                     loc = preventCoincident$1(loc, false);
+                     var d = new QAItem(loc, _this, k, itemId, {
+                       issueKey: k,
+                       // used as a category
+                       identifier: {
+                         // used to post changes
+                         wayId: wayId,
+                         fromNodeId: fromNodeId,
+                         toNodeId: toNodeId
+                       },
+                       objectId: wayId,
+                       objectType: 'way'
+                     }); // Variables used in the description

 
 

-           if (child.nodeName === 'user') {
-             uid = child.attributes.id.value;
+                     d.replacements = {
+                       percentage: feature.percentOfTrips,
+                       num_trips: feature.numberOfTrips,
+                       highway: linkErrorObject(_t('QA.keepRight.error_parts.highway')),
+                       from_node: linkEntity('n' + feature.fromNodeId),
+                       to_node: linkEntity('n' + feature.toNodeId)
+                     };
+                     _cache$1.data[d.id] = d;

 
 

-             if (options.skipSeen && _userCache.user[uid]) {
-               delete _userCache.toLoad[uid];
-               return null;
-             }
-           } else if (child.nodeName === 'note') {
-             uid = child.getElementsByTagName('id')[0].textContent;
-           } else {
-             uid = osmEntity.id.fromOSM(child.nodeName, child.attributes.id.value);
+                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
+                   });
+                 } // Tiles at high zoom == missing roads

 
 

-             if (options.skipSeen) {
-               if (_tileCache.seen[uid]) return null; // avoid reparsing a "seen" entity

 
 

-               _tileCache.seen[uid] = true;
-             }
-           }
+                 if (data.tiles) {
+                   data.tiles.forEach(function (feature) {
+                     var type = feature.type,
+                         x = feature.x,
+                         y = feature.y,
+                         numberOfTrips = feature.numberOfTrips;
+                     var geoType = type.toLowerCase();
+                     var itemId = "".concat(geoType).concat(x).concat(y).concat(numberOfTrips); // Average of recorded points should land on the missing geometry
+                     // Missing geometry could happen to land on another error

 
 

-           return parser(child, uid);
-         }
-       } // replace or remove note from rtree
+                     var loc = pointAverage(feature.points);
+                     loc = preventCoincident$1(loc, false);
+                     var d = new QAItem(loc, _this, "".concat(k, "-").concat(geoType), itemId, {
+                       issueKey: k,
+                       identifier: {
+                         x: x,
+                         y: y
+                       }
+                     });
+                     d.replacements = {
+                       num_trips: numberOfTrips,
+                       geometry_type: _t("QA.improveOSM.geometry_types.".concat(geoType))
+                     }; // -1 trips indicates data came from a 3rd party

 
 

+                     if (numberOfTrips === -1) {
+                       d.desc = _t('QA.improveOSM.error_types.mr.description_alt', d.replacements);
+                     }

 
 

-       function updateRtree$3(item, replace) {
-         _noteCache.rtree.remove(item, function isEql(a, b) {
-           return a.data.id === b.data.id;
-         });
+                     _cache$1.data[d.id] = d;

 
 

-         if (replace) {
-           _noteCache.rtree.insert(item);
-         }
-       }
+                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
+                   });
+                 } // Entities at high zoom == turn restrictions

 
 

-       function wrapcb(thisArg, callback, cid) {
-         return function (err, result) {
-           if (err) {
-             // 400 Bad Request, 401 Unauthorized, 403 Forbidden..
-             if (err.status === 400 || err.status === 401 || err.status === 403) {
-               thisArg.logout();
-             }

 
 

-             return callback.call(thisArg, err);
-           } else if (thisArg.getConnectionId() !== cid) {
-             return callback.call(thisArg, {
-               message: 'Connection Switched',
-               status: -1
-             });
-           } else {
-             return callback.call(thisArg, err, result);
-           }
-         };
-       }
+                 if (data.entities) {
+                   data.entities.forEach(function (feature) {
+                     var point = feature.point,
+                         id = feature.id,
+                         segments = feature.segments,
+                         numberOfPasses = feature.numberOfPasses,
+                         turnType = feature.turnType;
+                     var itemId = "".concat(id.replace(/[,:+#]/g, '_')); // Turn restrictions could be missing at same junction
+                     // We also want to bump the error up so node is accessible

 
 

-       var serviceOsm = {
-         init: function init() {
-           utilRebind(this, dispatch$6, 'on');
-         },
-         reset: function reset() {
-           Array.from(_deferred).forEach(function (handle) {
-             window.cancelIdleCallback(handle);
+                     var loc = preventCoincident$1([point.lon, point.lat], true); // Elements are presented in a strange way

 
 

-             _deferred["delete"](handle);
-           });
-           _connectionID++;
-           _userChangesets = undefined;
-           _userDetails = undefined;
-           _rateLimitError = undefined;
-           Object.values(_tileCache.inflight).forEach(abortRequest$5);
-           Object.values(_noteCache.inflight).forEach(abortRequest$5);
-           Object.values(_noteCache.inflightPost).forEach(abortRequest$5);
-           if (_changeset.inflight) abortRequest$5(_changeset.inflight);
-           _tileCache = {
-             toLoad: {},
-             loaded: {},
-             inflight: {},
-             seen: {},
-             rtree: new RBush()
-           };
-           _noteCache = {
-             toLoad: {},
-             loaded: {},
-             inflight: {},
-             inflightPost: {},
-             note: {},
-             closed: {},
-             rtree: new RBush()
-           };
-           _userCache = {
-             toLoad: {},
-             user: {}
-           };
-           _cachedApiStatus = undefined;
-           _changeset = {};
-           return this;
-         },
-         getConnectionId: function getConnectionId() {
-           return _connectionID;
-         },
-         changesetURL: function changesetURL(changesetID) {
-           return urlroot + '/changeset/' + changesetID;
-         },
-         changesetsURL: function changesetsURL(center, zoom) {
-           var precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
-           return urlroot + '/history#map=' + Math.floor(zoom) + '/' + center[1].toFixed(precision) + '/' + center[0].toFixed(precision);
-         },
-         entityURL: function entityURL(entity) {
-           return urlroot + '/' + entity.type + '/' + entity.osmId();
-         },
-         historyURL: function historyURL(entity) {
-           return urlroot + '/' + entity.type + '/' + entity.osmId() + '/history';
-         },
-         userURL: function userURL(username) {
-           return urlroot + '/user/' + username;
-         },
-         noteURL: function noteURL(note) {
-           return urlroot + '/note/' + note.id;
-         },
-         noteReportURL: function noteReportURL(note) {
-           return urlroot + '/reports/new?reportable_type=Note&reportable_id=' + note.id;
-         },
-         // Generic method to load data from the OSM API
-         // Can handle either auth or unauth calls.
-         loadFromAPI: function loadFromAPI(path, callback, options) {
-           options = Object.assign({
-             skipSeen: true
-           }, options);
-           var that = this;
-           var cid = _connectionID;
+                     var ids = id.split(',');
+                     var from_way = ids[0];
+                     var via_node = ids[3];
+                     var to_way = ids[2].split(':')[1];
+                     var d = new QAItem(loc, _this, k, itemId, {
+                       issueKey: k,
+                       identifier: id,
+                       objectId: via_node,
+                       objectType: 'node'
+                     }); // Travel direction along from_way clarifies the turn restriction

 
 

-           function done(err, payload) {
-             if (that.getConnectionId() !== cid) {
-               if (callback) callback({
-                 message: 'Connection Switched',
-                 status: -1
-               });
-               return;
-             }
+                     var _segments$0$points = _slicedToArray(segments[0].points, 2),
+                         p1 = _segments$0$points[0],
+                         p2 = _segments$0$points[1];

 
 

-             var isAuthenticated = that.authenticated(); // 400 Bad Request, 401 Unauthorized, 403 Forbidden
-             // Logout and retry the request..
+                     var dir_of_travel = cardinalDirection(relativeBearing(p1, p2)); // Variables used in the description

 
 

-             if (isAuthenticated && err && err.status && (err.status === 400 || err.status === 401 || err.status === 403)) {
-               that.logout();
-               that.loadFromAPI(path, callback, options); // else, no retry..
-             } else {
-               // 509 Bandwidth Limit Exceeded, 429 Too Many Requests
-               // Set the rateLimitError flag and trigger a warning..
-               if (!isAuthenticated && !_rateLimitError && err && err.status && (err.status === 509 || err.status === 429)) {
-                 _rateLimitError = err;
-                 dispatch$6.call('change');
-                 that.reloadApiStatus();
-               } else if (err && _cachedApiStatus === 'online' || !err && _cachedApiStatus !== 'online') {
-                 // If the response's error state doesn't match the status,
-                 // it's likely we lost or gained the connection so reload the status
-                 that.reloadApiStatus();
-               }
+                     d.replacements = {
+                       num_passed: numberOfPasses,
+                       num_trips: segments[0].numberOfTrips,
+                       turn_restriction: turnType.toLowerCase(),
+                       from_way: linkEntity('w' + from_way),
+                       to_way: linkEntity('w' + to_way),
+                       travel_direction: dir_of_travel,
+                       junction: linkErrorObject(_t('QA.keepRight.error_parts.this_node'))
+                     };
+                     _cache$1.data[d.id] = d;

 
 

-               if (callback) {
-                 if (err) {
-                   return callback(err);
-                 } else {
-                   if (path.indexOf('.json') !== -1) {
-                     return parseJSON(payload, callback, options);
-                   } else {
-                     return parseXML(payload, callback, options);
-                   }
+                     _cache$1.rtree.insert(encodeIssueRtree$1(d));
+
+                     dispatch$6.call('loaded');
+                   });

                  }
                  }

-               }
-             }
-           }
+               })["catch"](function () {
+                 delete _cache$1.inflightTile[tile.id][k];

 
 

-           if (this.authenticated()) {
-             return oauth.xhr({
-               method: 'GET',
-               path: path
-             }, done);
-           } else {
-             var url = urlroot + path;
-             var controller = new AbortController();
-             d3_json(url, {
-               signal: controller.signal
-             }).then(function (data) {
-               done(null, data);
-             })["catch"](function (err) {
-               if (err.name === 'AbortError') return; // d3-fetch includes status in the error message,
-               // but we can't access the response itself
-               // https://github.com/d3/d3-fetch/issues/27
+                 if (!Object.keys(_cache$1.inflightTile[tile.id]).length) {
+                   delete _cache$1.inflightTile[tile.id];
+                   _cache$1.loadedTile[tile.id] = true;
+                 }
+               });
+             });
+             _cache$1.inflightTile[tile.id] = requests;
+           });
+         },
+         getComments: function getComments(item) {
+           var _this2 = this;

 
 

-               var match = err.message.match(/^\d{3}/);
+           // If comments already retrieved no need to do so again
+           if (item.comments) {
+             return Promise.resolve(item);
+           }

 
 

-               if (match) {
-                 done({
-                   status: +match[0],
-                   statusText: err.message
-                 });
-               } else {
-                 done(err.message);
-               }
-             });
-             return controller;
+           var key = item.issueKey;
+           var qParams = {};
+
+           if (key === 'ow') {
+             qParams = item.identifier;
+           } else if (key === 'mr') {
+             qParams.tileX = item.identifier.x;
+             qParams.tileY = item.identifier.y;
+           } else if (key === 'tr') {
+             qParams.targetId = item.identifier;

            }
            }

-         },
-         // Load a single entity by id (ways and relations use the `/full` call)
-         // GET /api/0.6/node/#id
-         // GET /api/0.6/[way|relation]/#id/full
-         loadEntity: function loadEntity(id, callback) {
-           var type = osmEntity.id.type(id);
-           var osmID = osmEntity.id.toOSM(id);
-           var options = {
-             skipSeen: false
-           };
-           this.loadFromAPI('/api/0.6/' + type + '/' + osmID + (type !== 'node' ? '/full' : '') + '.json', function (err, entities) {
-             if (callback) callback(err, {
-               data: entities
-             });
-           }, options);
-         },
-         // Load a single entity with a specific version
-         // GET /api/0.6/[node|way|relation]/#id/#version
-         loadEntityVersion: function loadEntityVersion(id, version, callback) {
-           var type = osmEntity.id.type(id);
-           var osmID = osmEntity.id.toOSM(id);
-           var options = {
-             skipSeen: false
+
+           var url = "".concat(_impOsmUrls[key], "/retrieveComments?") + utilQsString(qParams);
+
+           var cacheComments = function cacheComments(data) {
+             // Assign directly for immediate use afterwards
+             // comments are served newest to oldest
+             item.comments = data.comments ? data.comments.reverse() : [];
+
+             _this2.replaceItem(item);

            };
            };

-           this.loadFromAPI('/api/0.6/' + type + '/' + osmID + '/' + version + '.json', function (err, entities) {
-             if (callback) callback(err, {
-               data: entities
-             });
-           }, options);
-         },
-         // Load multiple entities in chunks
-         // (note: callback may be called multiple times)
-         // Unlike `loadEntity`, child nodes and members are not fetched
-         // GET /api/0.6/[nodes|ways|relations]?#parameters
-         loadMultiple: function loadMultiple(ids, callback) {
-           var that = this;
-           var groups = utilArrayGroupBy(utilArrayUniq(ids), osmEntity.id.type);
-           Object.keys(groups).forEach(function (k) {
-             var type = k + 's'; // nodes, ways, relations

 
 

-             var osmIDs = groups[k].map(function (id) {
-               return osmEntity.id.toOSM(id);
-             });
-             var options = {
-               skipSeen: false
-             };
-             utilArrayChunk(osmIDs, 150).forEach(function (arr) {
-               that.loadFromAPI('/api/0.6/' + type + '.json?' + type + '=' + arr.join(), function (err, entities) {
-                 if (callback) callback(err, {
-                   data: entities
-                 });
-               }, options);
-             });
+           return d3_json(url).then(cacheComments).then(function () {
+             return item;

            });
          },
            });
          },

-         // Create, upload, and close a changeset
-         // PUT /api/0.6/changeset/create
-         // POST /api/0.6/changeset/#id/upload
-         // PUT /api/0.6/changeset/#id/close
-         putChangeset: function putChangeset(changeset, changes, callback) {
-           var cid = _connectionID;
+         postUpdate: function postUpdate(d, callback) {
+           if (!serviceOsm.authenticated()) {
+             // Username required in payload
+             return callback({
+               message: 'Not Authenticated',
+               status: -3
+             }, d);
+           }

 
 

-           if (_changeset.inflight) {
+           if (_cache$1.inflightPost[d.id]) {

              return callback({
              return callback({

-               message: 'Changeset already inflight',
+               message: 'Error update already inflight',

                status: -2
                status: -2

-             }, changeset);
-           } else if (_changeset.open) {
-             // reuse existing open changeset..
-             return createdChangeset.call(this, null, _changeset.open);
-           } else {
-             // Open a new changeset..
-             var options = {
-               method: 'PUT',
-               path: '/api/0.6/changeset/create',
-               options: {
-                 header: {
-                   'Content-Type': 'text/xml'
-                 }
-               },
-               content: JXON.stringify(changeset.asJXON())
-             };
-             _changeset.inflight = oauth.xhr(options, wrapcb(this, createdChangeset, cid));
-           }
+             }, d);
+           } // Payload can only be sent once username is established

 
 

-           function createdChangeset(err, changesetID) {
-             _changeset.inflight = null;
+
+           serviceOsm.userDetails(sendPayload.bind(this));
+
+           function sendPayload(err, user) {
+             var _this3 = this;

 
              if (err) {
 
              if (err) {

-               return callback(err, changeset);
+               return callback(err, d);

              }
 
              }
 

-             _changeset.open = changesetID;
-             changeset = changeset.update({
-               id: changesetID
-             }); // Upload the changeset..
+             var key = d.issueKey;
+             var url = "".concat(_impOsmUrls[key], "/comment");
+             var payload = {
+               username: user.display_name,
+               targetIds: [d.identifier]
+             };
+
+             if (d.newStatus) {
+               payload.status = d.newStatus;
+               payload.text = 'status changed';
+             } // Comment take place of default text
+
+
+             if (d.newComment) {
+               payload.text = d.newComment;
+             }

 
 

+             var controller = new AbortController();
+             _cache$1.inflightPost[d.id] = controller;

              var options = {
                method: 'POST',
              var options = {
                method: 'POST',

-               path: '/api/0.6/changeset/' + changesetID + '/upload',
-               options: {
-                 header: {
-                   'Content-Type': 'text/xml'
-                 }
-               },
-               content: JXON.stringify(changeset.osmChangeJXON(changes))
+               signal: controller.signal,
+               body: JSON.stringify(payload)

              };
              };

-             _changeset.inflight = oauth.xhr(options, wrapcb(this, uploadedChangeset, cid));
-           }
+             d3_json(url, options).then(function () {
+               delete _cache$1.inflightPost[d.id]; // Just a comment, update error in cache

 
 

-           function uploadedChangeset(err) {
-             _changeset.inflight = null;
-             if (err) return callback(err, changeset); // Upload was successful, safe to call the callback.
-             // Add delay to allow for postgres replication #1646 #2678
+               if (!d.newStatus) {
+                 var now = new Date();
+                 var comments = d.comments ? d.comments : [];
+                 comments.push({
+                   username: payload.username,
+                   text: payload.text,
+                   timestamp: now.getTime() / 1000
+                 });

 
 

-             window.setTimeout(function () {
-               callback(null, changeset);
-             }, 2500);
-             _changeset.open = null; // At this point, we don't really care if the connection was switched..
-             // Only try to close the changeset if we're still talking to the same server.
+                 _this3.replaceItem(d.update({
+                   comments: comments,
+                   newComment: undefined
+                 }));
+               } else {
+                 _this3.removeItem(d);

 
 

-             if (this.getConnectionId() === cid) {
-               // Still attempt to close changeset, but ignore response because #2667
-               oauth.xhr({
-                 method: 'PUT',
-                 path: '/api/0.6/changeset/' + changeset.id + '/close',
-                 options: {
-                   header: {
-                     'Content-Type': 'text/xml'
+                 if (d.newStatus === 'SOLVED') {
+                   // Keep track of the number of issues closed per type to tag the changeset
+                   if (!(d.issueKey in _cache$1.closed)) {
+                     _cache$1.closed[d.issueKey] = 0;

                    }
                    }

+
+                   _cache$1.closed[d.issueKey] += 1;

                  }
                  }

-               }, function () {
-                 return true;
-               });
-             }
+               }
+
+               if (callback) callback(null, d);
+             })["catch"](function (err) {
+               delete _cache$1.inflightPost[d.id];
+               if (callback) callback(err.message);
+             });

            }
          },
            }
          },

-         // Load multiple users in chunks
-         // (note: callback may be called multiple times)
-         // GET /api/0.6/users?users=#id1,#id2,...,#idn
-         loadUsers: function loadUsers(uids, callback) {
-           var toLoad = [];
-           var cached = [];
-           utilArrayUniq(uids).forEach(function (uid) {
-             if (_userCache.user[uid]) {
-               delete _userCache.toLoad[uid];
-               cached.push(_userCache.user[uid]);
-             } else {
-               toLoad.push(uid);
-             }
+         // Get all cached QAItems covering the viewport
+         getItems: function getItems(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           return _cache$1.rtree.search(bbox).map(function (d) {
+             return d.data;

            });
            });

+         },
+         // Get a QAItem from cache
+         // NOTE: Don't change method name until UI v3 is merged
+         getError: function getError(id) {
+           return _cache$1.data[id];
+         },
+         // get the name of the icon to display for this item
+         getIcon: function getIcon(itemType) {
+           return _impOsmData.icons[itemType];
+         },
+         // Replace a single QAItem in the cache
+         replaceItem: function replaceItem(issue) {
+           if (!(issue instanceof QAItem) || !issue.id) return;
+           _cache$1.data[issue.id] = issue;
+           updateRtree$2(encodeIssueRtree$1(issue), true); // true = replace

 
 

-           if (cached.length || !this.authenticated()) {
-             callback(undefined, cached);
-             if (!this.authenticated()) return; // require auth
+           return issue;
+         },
+         // Remove a single QAItem from the cache
+         removeItem: function removeItem(issue) {
+           if (!(issue instanceof QAItem) || !issue.id) return;
+           delete _cache$1.data[issue.id];
+           updateRtree$2(encodeIssueRtree$1(issue), false); // false = remove
+         },
+         // Used to populate `closed:improveosm:*` changeset tags
+         getClosedCounts: function getClosedCounts() {
+           return _cache$1.closed;
+         }
+       };
+
+       var defaults$5 = {exports: {}};
+
+       function getDefaults$1() {
+         return {
+           baseUrl: null,
+           breaks: false,
+           gfm: true,
+           headerIds: true,
+           headerPrefix: '',
+           highlight: null,
+           langPrefix: 'language-',
+           mangle: true,
+           pedantic: false,
+           renderer: null,
+           sanitize: false,
+           sanitizer: null,
+           silent: false,
+           smartLists: false,
+           smartypants: false,
+           tokenizer: null,
+           walkTokens: null,
+           xhtml: false
+         };
+       }
+
+       function changeDefaults$1(newDefaults) {
+         defaults$5.exports.defaults = newDefaults;
+       }
+
+       defaults$5.exports = {
+         defaults: getDefaults$1(),
+         getDefaults: getDefaults$1,
+         changeDefaults: changeDefaults$1
+       };
+
+       var escapeTest = /[&<>"']/;
+       var escapeReplace = /[&<>"']/g;
+       var escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
+       var escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g;
+       var escapeReplacements = {
+         '&': '&amp;',
+         '<': '&lt;',
+         '>': '&gt;',
+         '"': '&quot;',
+         "'": '&#39;'
+       };
+
+       var getEscapeReplacement = function getEscapeReplacement(ch) {
+         return escapeReplacements[ch];
+       };
+
+       function escape$3(html, encode) {
+         if (encode) {
+           if (escapeTest.test(html)) {
+             return html.replace(escapeReplace, getEscapeReplacement);
+           }
+         } else {
+           if (escapeTestNoEncode.test(html)) {
+             return html.replace(escapeReplaceNoEncode, getEscapeReplacement);

            }
            }

+         }

 
 

-           utilArrayChunk(toLoad, 150).forEach(function (arr) {
-             oauth.xhr({
-               method: 'GET',
-               path: '/api/0.6/users?users=' + arr.join()
-             }, wrapcb(this, done, _connectionID));
-           }.bind(this));
+         return html;
+       }

 
 

-           function done(err, xml) {
-             if (err) {
-               return callback(err);
-             }
+       var unescapeTest = /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig;

 
 

-             var options = {
-               skipSeen: true
-             };
-             return parseXML(xml, function (err, results) {
-               if (err) {
-                 return callback(err);
-               } else {
-                 return callback(undefined, results);
-               }
-             }, options);
+       function unescape$2(html) {
+         // explicitly match decimal, hex, and named HTML entities
+         return html.replace(unescapeTest, function (_, n) {
+           n = n.toLowerCase();
+           if (n === 'colon') return ':';
+
+           if (n.charAt(0) === '#') {
+             return n.charAt(1) === 'x' ? String.fromCharCode(parseInt(n.substring(2), 16)) : String.fromCharCode(+n.substring(1));

            }
            }

-         },
-         // Load a given user by id
-         // GET /api/0.6/user/#id
-         loadUser: function loadUser(uid, callback) {
-           if (_userCache.user[uid] || !this.authenticated()) {
-             // require auth
-             delete _userCache.toLoad[uid];
-             return callback(undefined, _userCache.user[uid]);
+
+           return '';
+         });
+       }
+
+       var caret = /(^|[^\[])\^/g;
+
+       function edit$1(regex, opt) {
+         regex = regex.source || regex;
+         opt = opt || '';
+         var obj = {
+           replace: function replace(name, val) {
+             val = val.source || val;
+             val = val.replace(caret, '$1');
+             regex = regex.replace(name, val);
+             return obj;
+           },
+           getRegex: function getRegex() {
+             return new RegExp(regex, opt);

            }
            }

+         };
+         return obj;
+       }

 
 

-           oauth.xhr({
-             method: 'GET',
-             path: '/api/0.6/user/' + uid
-           }, wrapcb(this, done, _connectionID));
+       var nonWordAndColonTest = /[^\w:]/g;
+       var originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;

 
 

-           function done(err, xml) {
-             if (err) {
-               return callback(err);
-             }
+       function cleanUrl$1(sanitize, base, href) {
+         if (sanitize) {
+           var prot;

 
 

-             var options = {
-               skipSeen: true
-             };
-             return parseXML(xml, function (err, results) {
-               if (err) {
-                 return callback(err);
-               } else {
-                 return callback(undefined, results[0]);
-               }
-             }, options);
+           try {
+             prot = decodeURIComponent(unescape$2(href)).replace(nonWordAndColonTest, '').toLowerCase();
+           } catch (e) {
+             return null;

            }
            }

-         },
-         // Load the details of the logged-in user
-         // GET /api/0.6/user/details
-         userDetails: function userDetails(callback) {
-           if (_userDetails) {
-             // retrieve cached
-             return callback(undefined, _userDetails);
+
+           if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
+             return null;
+           }
+         }
+
+         if (base && !originIndependentUrl.test(href)) {
+           href = resolveUrl$2(base, href);
+         }
+
+         try {
+           href = encodeURI(href).replace(/%25/g, '%');
+         } catch (e) {
+           return null;
+         }
+
+         return href;
+       }
+
+       var baseUrls = {};
+       var justDomain = /^[^:]+:\/*[^/]*$/;
+       var protocol = /^([^:]+:)[\s\S]*$/;
+       var domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
+
+       function resolveUrl$2(base, href) {
+         if (!baseUrls[' ' + base]) {
+           // we can ignore everything in base after the last slash of its path component,
+           // but we might need to add _that_
+           // https://tools.ietf.org/html/rfc3986#section-3
+           if (justDomain.test(base)) {
+             baseUrls[' ' + base] = base + '/';
+           } else {
+             baseUrls[' ' + base] = rtrim$1(base, '/', true);
+           }
+         }
+
+         base = baseUrls[' ' + base];
+         var relativeBase = base.indexOf(':') === -1;
+
+         if (href.substring(0, 2) === '//') {
+           if (relativeBase) {
+             return href;
+           }
+
+           return base.replace(protocol, '$1') + href;
+         } else if (href.charAt(0) === '/') {
+           if (relativeBase) {
+             return href;

            }
 
            }
 

-           oauth.xhr({
-             method: 'GET',
-             path: '/api/0.6/user/details'
-           }, wrapcb(this, done, _connectionID));
+           return base.replace(domain, '$1') + href;
+         } else {
+           return base + href;
+         }
+       }

 
 

-           function done(err, xml) {
-             if (err) {
-               return callback(err);
-             }
+       var noopTest$1 = {
+         exec: function noopTest() {}
+       };

 
 

-             var options = {
-               skipSeen: false
-             };
-             return parseXML(xml, function (err, results) {
-               if (err) {
-                 return callback(err);
-               } else {
-                 _userDetails = results[0];
-                 return callback(undefined, _userDetails);
-               }
-             }, options);
-           }
-         },
-         // Load previous changesets for the logged in user
-         // GET /api/0.6/changesets?user=#id
-         userChangesets: function userChangesets(callback) {
-           if (_userChangesets) {
-             // retrieve cached
-             return callback(undefined, _userChangesets);
-           }
+       function merge$2(obj) {
+         var i = 1,
+             target,
+             key;

 
 

-           this.userDetails(wrapcb(this, gotDetails, _connectionID));
+         for (; i < arguments.length; i++) {
+           target = arguments[i];

 
 

-           function gotDetails(err, user) {
-             if (err) {
-               return callback(err);
+           for (key in target) {
+             if (Object.prototype.hasOwnProperty.call(target, key)) {
+               obj[key] = target[key];

              }
              }

+           }
+         }

 
 

-             oauth.xhr({
-               method: 'GET',
-               path: '/api/0.6/changesets?user=' + user.id
-             }, wrapcb(this, done, _connectionID));
+         return obj;
+       }
+
+       function splitCells$1(tableRow, count) {
+         // ensure that every cell-delimiting pipe has a space
+         // before it to distinguish it from an escaped pipe
+         var row = tableRow.replace(/\|/g, function (match, offset, str) {
+           var escaped = false,
+               curr = offset;
+
+           while (--curr >= 0 && str[curr] === '\\') {
+             escaped = !escaped;

            }
 
            }
 

-           function done(err, xml) {
-             if (err) {
-               return callback(err);
-             }
+           if (escaped) {
+             // odd number of slashes means | is escaped
+             // so we leave it alone
+             return '|';
+           } else {
+             // add space before unescaped |
+             return ' |';
+           }
+         }),
+             cells = row.split(/ \|/);
+         var i = 0;

 
 

-             _userChangesets = Array.prototype.map.call(xml.getElementsByTagName('changeset'), function (changeset) {
-               return {
-                 tags: getTags(changeset)
-               };
-             }).filter(function (changeset) {
-               var comment = changeset.tags.comment;
-               return comment && comment !== '';
-             });
-             return callback(undefined, _userChangesets);
+         if (cells.length > count) {
+           cells.splice(count);
+         } else {
+           while (cells.length < count) {
+             cells.push('');

            }
            }

-         },
-         // Fetch the status of the OSM API
-         // GET /api/capabilities
-         status: function status(callback) {
-           var url = urlroot + '/api/capabilities';
-           var errback = wrapcb(this, done, _connectionID);
-           d3_xml(url).then(function (data) {
-             errback(null, data);
-           })["catch"](function (err) {
-             errback(err.message);
-           });
+         }

 
 

-           function done(err, xml) {
-             if (err) {
-               // the status is null if no response could be retrieved
-               return callback(err, null);
-             } // update blocklists
+         for (; i < cells.length; i++) {
+           // leading or trailing whitespace is ignored per the gfm spec
+           cells[i] = cells[i].trim().replace(/\\\|/g, '|');
+         }

 
 

+         return cells;
+       } // Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
+       // /c*$/ is vulnerable to REDOS.
+       // invert: Remove suffix of non-c chars instead. Default falsey.

 
 

-             var elements = xml.getElementsByTagName('blacklist');
-             var regexes = [];

 
 

-             for (var i = 0; i < elements.length; i++) {
-               var regexString = elements[i].getAttribute('regex'); // needs unencode?
+       function rtrim$1(str, c, invert) {
+         var l = str.length;

 
 

-               if (regexString) {
-                 try {
-                   var regex = new RegExp(regexString);
-                   regexes.push(regex);
-                 } catch (e) {
-                   /* noop */
-                 }
-               }
-             }
+         if (l === 0) {
+           return '';
+         } // Length of suffix matching the invert condition.

 
 

-             if (regexes.length) {
-               _imageryBlocklists = regexes;
-             }

 
 

-             if (_rateLimitError) {
-               return callback(_rateLimitError, 'rateLimited');
-             } else {
-               var waynodes = xml.getElementsByTagName('waynodes');
-               var maxWayNodes = waynodes.length && parseInt(waynodes[0].getAttribute('maximum'), 10);
-               if (maxWayNodes && isFinite(maxWayNodes)) _maxWayNodes = maxWayNodes;
-               var apiStatus = xml.getElementsByTagName('status');
-               var val = apiStatus[0].getAttribute('api');
-               return callback(undefined, val);
-             }
-           }
-         },
-         // Calls `status` and dispatches an `apiStatusChange` event if the returned
-         // status differs from the cached status.
-         reloadApiStatus: function reloadApiStatus() {
-           // throttle to avoid unnecessary API calls
-           if (!this.throttledReloadApiStatus) {
-             var that = this;
-             this.throttledReloadApiStatus = throttle(function () {
-               that.status(function (err, status) {
-                 if (status !== _cachedApiStatus) {
-                   _cachedApiStatus = status;
-                   dispatch$6.call('apiStatusChange', that, err, status);
-                 }
-               });
-             }, 500);
-           }
+         var suffLen = 0; // Step left until we fail to match the invert condition.

 
 

-           this.throttledReloadApiStatus();
-         },
-         // Returns the maximum number of nodes a single way can have
-         maxWayNodes: function maxWayNodes() {
-           return _maxWayNodes;
-         },
-         // Load data (entities) from the API in tiles
-         // GET /api/0.6/map?bbox=
-         loadTiles: function loadTiles(projection, callback) {
-           if (_off) return; // determine the needed tiles to cover the view
+         while (suffLen < l) {
+           var currChar = str.charAt(l - suffLen - 1);

 
 

-           var tiles = tiler$5.zoomExtent([_tileZoom$3, _tileZoom$3]).getTiles(projection); // abort inflight requests that are no longer needed
+           if (currChar === c && !invert) {
+             suffLen++;
+           } else if (currChar !== c && invert) {
+             suffLen++;
+           } else {
+             break;
+           }
+         }

 
 

-           var hadRequests = hasInflightRequests(_tileCache);
-           abortUnwantedRequests$3(_tileCache, tiles);
+         return str.substr(0, l - suffLen);
+       }

 
 

-           if (hadRequests && !hasInflightRequests(_tileCache)) {
-             dispatch$6.call('loaded'); // stop the spinner
-           } // issue new requests..
+       function findClosingBracket$1(str, b) {
+         if (str.indexOf(b[1]) === -1) {
+           return -1;
+         }

 
 

+         var l = str.length;
+         var level = 0,
+             i = 0;

 
 

-           tiles.forEach(function (tile) {
-             this.loadTile(tile, callback);
-           }, this);
-         },
-         // Load a single data tile
-         // GET /api/0.6/map?bbox=
-         loadTile: function loadTile(tile, callback) {
-           if (_off) return;
-           if (_tileCache.loaded[tile.id] || _tileCache.inflight[tile.id]) return;
+         for (; i < l; i++) {
+           if (str[i] === '\\') {
+             i++;
+           } else if (str[i] === b[0]) {
+             level++;
+           } else if (str[i] === b[1]) {
+             level--;

 
 

-           if (!hasInflightRequests(_tileCache)) {
-             dispatch$6.call('loading'); // start the spinner
+             if (level < 0) {
+               return i;
+             }

            }
            }

+         }

 
 

-           var path = '/api/0.6/map.json?bbox=';
-           var options = {
-             skipSeen: true
-           };
-           _tileCache.inflight[tile.id] = this.loadFromAPI(path + tile.extent.toParam(), tileCallback, options);
+         return -1;
+       }

 
 

-           function tileCallback(err, parsed) {
-             delete _tileCache.inflight[tile.id];
+       function checkSanitizeDeprecation$1(opt) {
+         if (opt && opt.sanitize && !opt.silent) {
+           console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');
+         }
+       } // copied from https://stackoverflow.com/a/5450113/806777

 
 

-             if (!err) {
-               delete _tileCache.toLoad[tile.id];
-               _tileCache.loaded[tile.id] = true;
-               var bbox = tile.extent.bbox();
-               bbox.id = tile.id;

 
 

-               _tileCache.rtree.insert(bbox);
-             }
+       function repeatString$1(pattern, count) {
+         if (count < 1) {
+           return '';
+         }

 
 

-             if (callback) {
-               callback(err, Object.assign({
-                 data: parsed
-               }, tile));
-             }
+         var result = '';

 
 

-             if (!hasInflightRequests(_tileCache)) {
-               dispatch$6.call('loaded'); // stop the spinner
-             }
+         while (count > 1) {
+           if (count & 1) {
+             result += pattern;

            }
            }

-         },
-         isDataLoaded: function isDataLoaded(loc) {
-           var bbox = {
-             minX: loc[0],
-             minY: loc[1],
-             maxX: loc[0],
-             maxY: loc[1]
-           };
-           return _tileCache.rtree.collides(bbox);
-         },
-         // load the tile that covers the given `loc`
-         loadTileAtLoc: function loadTileAtLoc(loc, callback) {
-           // Back off if the toLoad queue is filling up.. re #6417
-           // (Currently `loadTileAtLoc` requests are considered low priority - used by operations to
-           // let users safely edit geometries which extend to unloaded tiles.  We can drop some.)
-           if (Object.keys(_tileCache.toLoad).length > 50) return;
-           var k = geoZoomToScale(_tileZoom$3 + 1);
-           var offset = geoRawMercator().scale(k)(loc);
-           var projection = geoRawMercator().transform({
-             k: k,
-             x: -offset[0],
-             y: -offset[1]
-           });
-           var tiles = tiler$5.zoomExtent([_tileZoom$3, _tileZoom$3]).getTiles(projection);
-           tiles.forEach(function (tile) {
-             if (_tileCache.toLoad[tile.id] || _tileCache.loaded[tile.id] || _tileCache.inflight[tile.id]) return;
-             _tileCache.toLoad[tile.id] = true;
-             this.loadTile(tile, callback);
-           }, this);
-         },
-         // Load notes from the API in tiles
-         // GET /api/0.6/notes?bbox=
-         loadNotes: function loadNotes(projection, noteOptions) {
-           noteOptions = Object.assign({
-             limit: 10000,
-             closed: 7
-           }, noteOptions);
-           if (_off) return;
-           var that = this;
-           var path = '/api/0.6/notes?limit=' + noteOptions.limit + '&closed=' + noteOptions.closed + '&bbox=';

 
 

-           var throttleLoadUsers = throttle(function () {
-             var uids = Object.keys(_userCache.toLoad);
-             if (!uids.length) return;
-             that.loadUsers(uids, function () {}); // eagerly load user details
-           }, 750); // determine the needed tiles to cover the view
+           count >>= 1;
+           pattern += pattern;
+         }

 
 

+         return result + pattern;
+       }

 
 

-           var tiles = tiler$5.zoomExtent([_noteZoom, _noteZoom]).getTiles(projection); // abort inflight requests that are no longer needed
+       var helpers = {
+         escape: escape$3,
+         unescape: unescape$2,
+         edit: edit$1,
+         cleanUrl: cleanUrl$1,
+         resolveUrl: resolveUrl$2,
+         noopTest: noopTest$1,
+         merge: merge$2,
+         splitCells: splitCells$1,
+         rtrim: rtrim$1,
+         findClosingBracket: findClosingBracket$1,
+         checkSanitizeDeprecation: checkSanitizeDeprecation$1,
+         repeatString: repeatString$1
+       };

 
 

-           abortUnwantedRequests$3(_noteCache, tiles); // issue new requests..
+       var defaults$4 = defaults$5.exports.defaults;
+       var rtrim = helpers.rtrim,
+           splitCells = helpers.splitCells,
+           _escape = helpers.escape,
+           findClosingBracket = helpers.findClosingBracket;

 
 

-           tiles.forEach(function (tile) {
-             if (_noteCache.loaded[tile.id] || _noteCache.inflight[tile.id]) return;
-             var options = {
-               skipSeen: false
-             };
-             _noteCache.inflight[tile.id] = that.loadFromAPI(path + tile.extent.toParam(), function (err) {
-               delete _noteCache.inflight[tile.id];
+       function outputLink(cap, link, raw) {
+         var href = link.href;
+         var title = link.title ? _escape(link.title) : null;
+         var text = cap[1].replace(/\\([\[\]])/g, '$1');

 
 

-               if (!err) {
-                 _noteCache.loaded[tile.id] = true;
-               }
+         if (cap[0].charAt(0) !== '!') {
+           return {
+             type: 'link',
+             raw: raw,
+             href: href,
+             title: title,
+             text: text
+           };
+         } else {
+           return {
+             type: 'image',
+             raw: raw,
+             href: href,
+             title: title,
+             text: _escape(text)
+           };
+         }
+       }

 
 

-               throttleLoadUsers();
-               dispatch$6.call('loadedNotes');
-             }, options);
-           });
-         },
-         // Create a note
-         // POST /api/0.6/notes?params
-         postNoteCreate: function postNoteCreate(note, callback) {
-           if (!this.authenticated()) {
-             return callback({
-               message: 'Not Authenticated',
-               status: -3
-             }, note);
-           }
+       function indentCodeCompensation(raw, text) {
+         var matchIndentToCode = raw.match(/^(\s+)(?:```)/);

 
 

-           if (_noteCache.inflightPost[note.id]) {
-             return callback({
-               message: 'Note update already inflight',
-               status: -2
-             }, note);
-           }
+         if (matchIndentToCode === null) {
+           return text;
+         }

 
 

-           if (!note.loc[0] || !note.loc[1] || !note.newComment) return; // location & description required
+         var indentToCode = matchIndentToCode[1];
+         return text.split('\n').map(function (node) {
+           var matchIndentInNode = node.match(/^\s+/);

 
 

-           var comment = note.newComment;
+           if (matchIndentInNode === null) {
+             return node;
+           }

 
 

-           if (note.newCategory && note.newCategory !== 'None') {
-             comment += ' #' + note.newCategory;
+           var _matchIndentInNode = _slicedToArray(matchIndentInNode, 1),
+               indentInNode = _matchIndentInNode[0];
+
+           if (indentInNode.length >= indentToCode.length) {
+             return node.slice(indentToCode.length);

            }
 
            }
 

-           var path = '/api/0.6/notes?' + utilQsString({
-             lon: note.loc[0],
-             lat: note.loc[1],
-             text: comment
-           });
-           _noteCache.inflightPost[note.id] = oauth.xhr({
-             method: 'POST',
-             path: path
-           }, wrapcb(this, done, _connectionID));
+           return node;
+         }).join('\n');
+       }
+       /**
+        * Tokenizer
+        */

 
 

-           function done(err, xml) {
-             delete _noteCache.inflightPost[note.id];

 
 

-             if (err) {
-               return callback(err);
-             } // we get the updated note back, remove from caches and reparse..
+       var Tokenizer_1 = /*#__PURE__*/function () {
+         function Tokenizer(options) {
+           _classCallCheck$1(this, Tokenizer);
+
+           this.options = options || defaults$4;
+         }

 
 

+         _createClass$1(Tokenizer, [{
+           key: "space",
+           value: function space(src) {
+             var cap = this.rules.block.newline.exec(src);

 
 

-             this.removeNote(note);
-             var options = {
-               skipSeen: false
-             };
-             return parseXML(xml, function (err, results) {
-               if (err) {
-                 return callback(err);
-               } else {
-                 return callback(undefined, results[0]);
+             if (cap) {
+               if (cap[0].length > 1) {
+                 return {
+                   type: 'space',
+                   raw: cap[0]
+                 };

                }
                }

-             }, options);
+
+               return {
+                 raw: '\n'
+               };
+             }

            }
            }

-         },
-         // Update a note
-         // POST /api/0.6/notes/#id/comment?text=comment
-         // POST /api/0.6/notes/#id/close?text=comment
-         // POST /api/0.6/notes/#id/reopen?text=comment
-         postNoteUpdate: function postNoteUpdate(note, newStatus, callback) {
-           if (!this.authenticated()) {
-             return callback({
-               message: 'Not Authenticated',
-               status: -3
-             }, note);
+         }, {
+           key: "code",
+           value: function code(src) {
+             var cap = this.rules.block.code.exec(src);
+
+             if (cap) {
+               var text = cap[0].replace(/^ {1,4}/gm, '');
+               return {
+                 type: 'code',
+                 raw: cap[0],
+                 codeBlockStyle: 'indented',
+                 text: !this.options.pedantic ? rtrim(text, '\n') : text
+               };
+             }

            }
            }

+         }, {
+           key: "fences",
+           value: function fences(src) {
+             var cap = this.rules.block.fences.exec(src);

 
 

-           if (_noteCache.inflightPost[note.id]) {
-             return callback({
-               message: 'Note update already inflight',
-               status: -2
-             }, note);
+             if (cap) {
+               var raw = cap[0];
+               var text = indentCodeCompensation(raw, cap[3] || '');
+               return {
+                 type: 'code',
+                 raw: raw,
+                 lang: cap[2] ? cap[2].trim() : cap[2],
+                 text: text
+               };
+             }

            }
            }

+         }, {
+           key: "heading",
+           value: function heading(src) {
+             var cap = this.rules.block.heading.exec(src);

 
 

-           var action;
+             if (cap) {
+               var text = cap[2].trim(); // remove trailing #s

 
 

-           if (note.status !== 'closed' && newStatus === 'closed') {
-             action = 'close';
-           } else if (note.status !== 'open' && newStatus === 'open') {
-             action = 'reopen';
-           } else {
-             action = 'comment';
-             if (!note.newComment) return; // when commenting, comment required
-           }
+               if (/#$/.test(text)) {
+                 var trimmed = rtrim(text, '#');

 
 

-           var path = '/api/0.6/notes/' + note.id + '/' + action;
+                 if (this.options.pedantic) {
+                   text = trimmed.trim();
+                 } else if (!trimmed || / $/.test(trimmed)) {
+                   // CommonMark requires space before trailing #s
+                   text = trimmed.trim();
+                 }
+               }

 
 

-           if (note.newComment) {
-             path += '?' + utilQsString({
-               text: note.newComment
-             });
+               return {
+                 type: 'heading',
+                 raw: cap[0],
+                 depth: cap[1].length,
+                 text: text
+               };
+             }

            }
            }

+         }, {
+           key: "nptable",
+           value: function nptable(src) {
+             var cap = this.rules.block.nptable.exec(src);

 
 

-           _noteCache.inflightPost[note.id] = oauth.xhr({
-             method: 'POST',
-             path: path
-           }, wrapcb(this, done, _connectionID));
+             if (cap) {
+               var item = {
+                 type: 'table',
+                 header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
+                 align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
+                 cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : [],
+                 raw: cap[0]
+               };

 
 

-           function done(err, xml) {
-             delete _noteCache.inflightPost[note.id];
+               if (item.header.length === item.align.length) {
+                 var l = item.align.length;
+                 var i;

 
 

-             if (err) {
-               return callback(err);
-             } // we get the updated note back, remove from caches and reparse..
+                 for (i = 0; i < l; i++) {
+                   if (/^ *-+: *$/.test(item.align[i])) {
+                     item.align[i] = 'right';
+                   } else if (/^ *:-+: *$/.test(item.align[i])) {
+                     item.align[i] = 'center';
+                   } else if (/^ *:-+ *$/.test(item.align[i])) {
+                     item.align[i] = 'left';
+                   } else {
+                     item.align[i] = null;
+                   }
+                 }

 
 

+                 l = item.cells.length;

 
 

-             this.removeNote(note); // update closed note cache - used to populate `closed:note` changeset tag
+                 for (i = 0; i < l; i++) {
+                   item.cells[i] = splitCells(item.cells[i], item.header.length);
+                 }

 
 

-             if (action === 'close') {
-               _noteCache.closed[note.id] = true;
-             } else if (action === 'reopen') {
-               delete _noteCache.closed[note.id];
+                 return item;
+               }

              }
              }

+           }
+         }, {
+           key: "hr",
+           value: function hr(src) {
+             var cap = this.rules.block.hr.exec(src);

 
 

-             var options = {
-               skipSeen: false
-             };
-             return parseXML(xml, function (err, results) {
-               if (err) {
-                 return callback(err);
-               } else {
-                 return callback(undefined, results[0]);
-               }
-             }, options);
+             if (cap) {
+               return {
+                 type: 'hr',
+                 raw: cap[0]
+               };
+             }

            }
            }

-         },
-         "switch": function _switch(options) {
-           urlroot = options.urlroot;
-           oauth.options(Object.assign({
-             url: urlroot,
-             loading: authLoading,
-             done: authDone
-           }, options));
-           this.reset();
-           this.userChangesets(function () {}); // eagerly load user details/changesets
+         }, {
+           key: "blockquote",
+           value: function blockquote(src) {
+             var cap = this.rules.block.blockquote.exec(src);

 
 

-           dispatch$6.call('change');
-           return this;
-         },
-         toggle: function toggle(val) {
-           _off = !val;
-           return this;
-         },
-         isChangesetInflight: function isChangesetInflight() {
-           return !!_changeset.inflight;
-         },
-         // get/set cached data
-         // This is used to save/restore the state when entering/exiting the walkthrough
-         // Also used for testing purposes.
-         caches: function caches(obj) {
-           function cloneCache(source) {
-             var target = {};
-             Object.keys(source).forEach(function (k) {
-               if (k === 'rtree') {
-                 target.rtree = new RBush().fromJSON(source.rtree.toJSON()); // clone rbush
-               } else if (k === 'note') {
-                 target.note = {};
-                 Object.keys(source.note).forEach(function (id) {
-                   target.note[id] = osmNote(source.note[id]); // copy notes
-                 });
-               } else {
-                 target[k] = JSON.parse(JSON.stringify(source[k])); // clone deep
-               }
-             });
-             return target;
+             if (cap) {
+               var text = cap[0].replace(/^ *> ?/gm, '');
+               return {
+                 type: 'blockquote',
+                 raw: cap[0],
+                 text: text
+               };
+             }

            }
            }

+         }, {
+           key: "list",
+           value: function list(src) {
+             var cap = this.rules.block.list.exec(src);

 
 

-           if (!arguments.length) {
-             return {
-               tile: cloneCache(_tileCache),
-               note: cloneCache(_noteCache),
-               user: cloneCache(_userCache)
-             };
-           } // access caches directly for testing (e.g., loading notes rtree)
+             if (cap) {
+               var raw = cap[0];
+               var bull = cap[2];
+               var isordered = bull.length > 1;
+               var list = {
+                 type: 'list',
+                 raw: raw,
+                 ordered: isordered,
+                 start: isordered ? +bull.slice(0, -1) : '',
+                 loose: false,
+                 items: []
+               }; // Get each top-level item.

 
 

+               var itemMatch = cap[0].match(this.rules.block.item);
+               var next = false,
+                   item,
+                   space,
+                   bcurr,
+                   bnext,
+                   addBack,
+                   loose,
+                   istask,
+                   ischecked,
+                   endMatch;
+               var l = itemMatch.length;
+               bcurr = this.rules.block.listItemStart.exec(itemMatch[0]);

 
 

-           if (obj === 'get') {
-             return {
-               tile: _tileCache,
-               note: _noteCache,
-               user: _userCache
-             };
-           }
+               for (var i = 0; i < l; i++) {
+                 item = itemMatch[i];
+                 raw = item;
+
+                 if (!this.options.pedantic) {
+                   // Determine if current item contains the end of the list
+                   endMatch = item.match(new RegExp('\\n\\s*\\n {0,' + (bcurr[0].length - 1) + '}\\S'));
+
+                   if (endMatch) {
+                     addBack = item.length - endMatch.index + itemMatch.slice(i + 1).join('\n').length;
+                     list.raw = list.raw.substring(0, list.raw.length - addBack);
+                     item = item.substring(0, endMatch.index);
+                     raw = item;
+                     l = i + 1;
+                   }
+                 } // Determine whether the next list item belongs here.
+                 // Backpedal if it does not belong in this list.

 
 

-           if (obj.tile) {
-             _tileCache = obj.tile;
-             _tileCache.inflight = {};
-           }

 
 

-           if (obj.note) {
-             _noteCache = obj.note;
-             _noteCache.inflight = {};
-             _noteCache.inflightPost = {};
-           }
+                 if (i !== l - 1) {
+                   bnext = this.rules.block.listItemStart.exec(itemMatch[i + 1]);

 
 

-           if (obj.user) {
-             _userCache = obj.user;
-           }
+                   if (!this.options.pedantic ? bnext[1].length >= bcurr[0].length || bnext[1].length > 3 : bnext[1].length > bcurr[1].length) {
+                     // nested list or continuation
+                     itemMatch.splice(i, 2, itemMatch[i] + (!this.options.pedantic && bnext[1].length < bcurr[0].length && !itemMatch[i].match(/\n$/) ? '' : '\n') + itemMatch[i + 1]);
+                     i--;
+                     l--;
+                     continue;
+                   } else if ( // different bullet style
+                   !this.options.pedantic || this.options.smartLists ? bnext[2][bnext[2].length - 1] !== bull[bull.length - 1] : isordered === (bnext[2].length === 1)) {
+                     addBack = itemMatch.slice(i + 1).join('\n').length;
+                     list.raw = list.raw.substring(0, list.raw.length - addBack);
+                     i = l - 1;
+                   }

 
 

-           return this;
-         },
-         logout: function logout() {
-           _userChangesets = undefined;
-           _userDetails = undefined;
-           oauth.logout();
-           dispatch$6.call('change');
-           return this;
-         },
-         authenticated: function authenticated() {
-           return oauth.authenticated();
-         },
-         authenticate: function authenticate(callback) {
-           var that = this;
-           var cid = _connectionID;
-           _userChangesets = undefined;
-           _userDetails = undefined;
+                   bcurr = bnext;
+                 } // Remove the list item's bullet
+                 // so it is seen as the next token.

 
 

-           function done(err, res) {
-             if (err) {
-               if (callback) callback(err);
-               return;
-             }

 
 

-             if (that.getConnectionId() !== cid) {
-               if (callback) callback({
-                 message: 'Connection Switched',
-                 status: -1
-               });
-               return;
-             }
+                 space = item.length;
+                 item = item.replace(/^ *([*+-]|\d+[.)]) ?/, ''); // Outdent whatever the
+                 // list item contains. Hacky.

 
 

-             _rateLimitError = undefined;
-             dispatch$6.call('change');
-             if (callback) callback(err, res);
-             that.userChangesets(function () {}); // eagerly load user details/changesets
-           }
+                 if (~item.indexOf('\n ')) {
+                   space -= item.length;
+                   item = !this.options.pedantic ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '') : item.replace(/^ {1,4}/gm, '');
+                 } // trim item newlines at end

 
 

-           return oauth.authenticate(done);
-         },
-         imageryBlocklists: function imageryBlocklists() {
-           return _imageryBlocklists;
-         },
-         tileZoom: function tileZoom(val) {
-           if (!arguments.length) return _tileZoom$3;
-           _tileZoom$3 = val;
-           return this;
-         },
-         // get all cached notes covering the viewport
-         notes: function notes(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           return _noteCache.rtree.search(bbox).map(function (d) {
-             return d.data;
-           });
-         },
-         // get a single note from the cache
-         getNote: function getNote(id) {
-           return _noteCache.note[id];
-         },
-         // remove a single note from the cache
-         removeNote: function removeNote(note) {
-           if (!(note instanceof osmNote) || !note.id) return;
-           delete _noteCache.note[note.id];
-           updateRtree$3(encodeNoteRtree(note), false); // false = remove
-         },
-         // replace a single note in the cache
-         replaceNote: function replaceNote(note) {
-           if (!(note instanceof osmNote) || !note.id) return;
-           _noteCache.note[note.id] = note;
-           updateRtree$3(encodeNoteRtree(note), true); // true = replace

 
 

-           return note;
-         },
-         // Get an array of note IDs closed during this session.
-         // Used to populate `closed:note` changeset tag
-         getClosedIDs: function getClosedIDs() {
-           return Object.keys(_noteCache.closed).sort();
-         }
-       };
+                 item = rtrim(item, '\n');

 
 

-       var _apibase = 'https://wiki.openstreetmap.org/w/api.php';
-       var _inflight$1 = {};
-       var _wikibaseCache = {};
-       var _localeIDs = {
-         en: false
-       };
+                 if (i !== l - 1) {
+                   raw = raw + '\n';
+                 } // Determine whether item is loose or not.
+                 // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
+                 // for discount behavior.

 
 

-       var debouncedRequest = debounce(request, 500, {
-         leading: false
-       });

 
 

-       function request(url, callback) {
-         if (_inflight$1[url]) return;
-         var controller = new AbortController();
-         _inflight$1[url] = controller;
-         d3_json(url, {
-           signal: controller.signal
-         }).then(function (result) {
-           delete _inflight$1[url];
-           if (callback) callback(null, result);
-         })["catch"](function (err) {
-           delete _inflight$1[url];
-           if (err.name === 'AbortError') return;
-           if (callback) callback(err.message);
-         });
-       }
+                 loose = next || /\n\n(?!\s*$)/.test(raw);

 
 

-       var serviceOsmWikibase = {
-         init: function init() {
-           _inflight$1 = {};
-           _wikibaseCache = {};
-           _localeIDs = {};
-         },
-         reset: function reset() {
-           Object.values(_inflight$1).forEach(function (controller) {
-             controller.abort();
-           });
-           _inflight$1 = {};
-         },
+                 if (i !== l - 1) {
+                   next = raw.slice(-2) === '\n\n';
+                   if (!loose) loose = next;
+                 }

 
 

-         /**
-          * Get the best value for the property, or undefined if not found
-          * @param entity object from wikibase
-          * @param property string e.g. 'P4' for image
-          * @param langCode string e.g. 'fr' for French
-          */
-         claimToValue: function claimToValue(entity, property, langCode) {
-           if (!entity.claims[property]) return undefined;
-           var locale = _localeIDs[langCode];
-           var preferredPick, localePick;
-           entity.claims[property].forEach(function (stmt) {
-             // If exists, use value limited to the needed language (has a qualifier P26 = locale)
-             // Or if not found, use the first value with the "preferred" rank
-             if (!preferredPick && stmt.rank === 'preferred') {
-               preferredPick = stmt;
-             }
+                 if (loose) {
+                   list.loose = true;
+                 } // Check for task list items

 
 

-             if (locale && stmt.qualifiers && stmt.qualifiers.P26 && stmt.qualifiers.P26[0].datavalue.value.id === locale) {
-               localePick = stmt;
-             }
-           });
-           var result = localePick || preferredPick;

 
 

-           if (result) {
-             var datavalue = result.mainsnak.datavalue;
-             return datavalue.type === 'wikibase-entityid' ? datavalue.value.id : datavalue.value;
-           } else {
-             return undefined;
-           }
-         },
+                 if (this.options.gfm) {
+                   istask = /^\[[ xX]\] /.test(item);
+                   ischecked = undefined;

 
 

-         /**
-          * Convert monolingual property into a key-value object (language -> value)
-          * @param entity object from wikibase
-          * @param property string e.g. 'P31' for monolingual wiki page title
-          */
-         monolingualClaimToValueObj: function monolingualClaimToValueObj(entity, property) {
-           if (!entity || !entity.claims[property]) return undefined;
-           return entity.claims[property].reduce(function (acc, obj) {
-             var value = obj.mainsnak.datavalue.value;
-             acc[value.language] = value.text;
-             return acc;
-           }, {});
-         },
-         toSitelink: function toSitelink(key, value) {
-           var result = value ? 'Tag:' + key + '=' + value : 'Key:' + key;
-           return result.replace(/_/g, ' ').trim();
-         },
-         //
-         // Pass params object of the form:
-         // {
-         //   key: 'string',
-         //   value: 'string',
-         //   langCode: 'string'
-         // }
-         //
-         getEntity: function getEntity(params, callback) {
-           var doRequest = params.debounce ? debouncedRequest : request;
-           var that = this;
-           var titles = [];
-           var result = {};
-           var rtypeSitelink = params.key === 'type' && params.value ? ('Relation:' + params.value).replace(/_/g, ' ').trim() : false;
-           var keySitelink = params.key ? this.toSitelink(params.key) : false;
-           var tagSitelink = params.key && params.value ? this.toSitelink(params.key, params.value) : false;
-           var localeSitelink;
+                   if (istask) {
+                     ischecked = item[1] !== ' ';
+                     item = item.replace(/^\[[ xX]\] +/, '');
+                   }
+                 }

 
 

-           if (params.langCodes) {
-             params.langCodes.forEach(function (langCode) {
-               if (_localeIDs[langCode] === undefined) {
-                 // If this is the first time we are asking about this locale,
-                 // fetch corresponding entity (if it exists), and cache it.
-                 // If there is no such entry, cache `false` value to avoid re-requesting it.
-                 localeSitelink = ('Locale:' + langCode).replace(/_/g, ' ').trim();
-                 titles.push(localeSitelink);
+                 list.items.push({
+                   type: 'list_item',
+                   raw: raw,
+                   task: istask,
+                   checked: ischecked,
+                   loose: loose,
+                   text: item
+                 });

                }
                }

-             });
-           }

 
 

-           if (rtypeSitelink) {
-             if (_wikibaseCache[rtypeSitelink]) {
-               result.rtype = _wikibaseCache[rtypeSitelink];
-             } else {
-               titles.push(rtypeSitelink);
+               return list;

              }
            }
              }
            }

+         }, {
+           key: "html",
+           value: function html(src) {
+             var cap = this.rules.block.html.exec(src);

 
 

-           if (keySitelink) {
-             if (_wikibaseCache[keySitelink]) {
-               result.key = _wikibaseCache[keySitelink];
-             } else {
-               titles.push(keySitelink);
+             if (cap) {
+               return {
+                 type: this.options.sanitize ? 'paragraph' : 'html',
+                 raw: cap[0],
+                 pre: !this.options.sanitizer && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
+                 text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0]
+               };

              }
            }
              }
            }

+         }, {
+           key: "def",
+           value: function def(src) {
+             var cap = this.rules.block.def.exec(src);

 
 

-           if (tagSitelink) {
-             if (_wikibaseCache[tagSitelink]) {
-               result.tag = _wikibaseCache[tagSitelink];
-             } else {
-               titles.push(tagSitelink);
+             if (cap) {
+               if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
+               var tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
+               return {
+                 type: 'def',
+                 tag: tag,
+                 raw: cap[0],
+                 href: cap[2],
+                 title: cap[3]
+               };

              }
            }
              }
            }

+         }, {
+           key: "table",
+           value: function table(src) {
+             var cap = this.rules.block.table.exec(src);

 
 

-           if (!titles.length) {
-             // Nothing to do, we already had everything in the cache
-             return callback(null, result);
-           } // Requesting just the user language code
-           // If backend recognizes the code, it will perform proper fallbacks,
-           // and the result will contain the requested code. If not, all values are returned:
-           // {"zh-tw":{"value":"...","language":"zh-tw","source-language":"zh-hant"}
-           // {"pt-br":{"value":"...","language":"pt","for-language":"pt-br"}}
-
-
-           var obj = {
-             action: 'wbgetentities',
-             sites: 'wiki',
-             titles: titles.join('|'),
-             languages: params.langCodes.join('|'),
-             languagefallback: 1,
-             origin: '*',
-             format: 'json' // There is an MW Wikibase API bug https://phabricator.wikimedia.org/T212069
-             // We shouldn't use v1 until it gets fixed, but should switch to it afterwards
-             // formatversion: 2,
+             if (cap) {
+               var item = {
+                 type: 'table',
+                 header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
+                 align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
+                 cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
+               };

 
 

-           };
-           var url = _apibase + '?' + utilQsString(obj);
-           doRequest(url, function (err, d) {
-             if (err) {
-               callback(err);
-             } else if (!d.success || d.error) {
-               callback(d.error.messages.map(function (v) {
-                 return v.html['*'];
-               }).join('<br>'));
-             } else {
-               var localeID = false;
-               Object.values(d.entities).forEach(function (res) {
-                 if (res.missing !== '') {
-                   var title = res.sitelinks.wiki.title;
+               if (item.header.length === item.align.length) {
+                 item.raw = cap[0];
+                 var l = item.align.length;
+                 var i;

 
 

-                   if (title === rtypeSitelink) {
-                     _wikibaseCache[rtypeSitelink] = res;
-                     result.rtype = res;
-                   } else if (title === keySitelink) {
-                     _wikibaseCache[keySitelink] = res;
-                     result.key = res;
-                   } else if (title === tagSitelink) {
-                     _wikibaseCache[tagSitelink] = res;
-                     result.tag = res;
-                   } else if (title === localeSitelink) {
-                     localeID = res.id;
+                 for (i = 0; i < l; i++) {
+                   if (/^ *-+: *$/.test(item.align[i])) {
+                     item.align[i] = 'right';
+                   } else if (/^ *:-+: *$/.test(item.align[i])) {
+                     item.align[i] = 'center';
+                   } else if (/^ *:-+ *$/.test(item.align[i])) {
+                     item.align[i] = 'left';

                    } else {
                    } else {

-                     console.log('Unexpected title ' + title); // eslint-disable-line no-console
+                     item.align[i] = null;

                    }
                  }
                    }
                  }

-               });

 
 

-               if (localeSitelink) {
-                 // If locale ID is not found, store false to prevent repeated queries
-                 that.addLocale(params.langCodes[0], localeID);
-               }
+                 l = item.cells.length;

 
 

-               callback(null, result);
+                 for (i = 0; i < l; i++) {
+                   item.cells[i] = splitCells(item.cells[i].replace(/^ *\| *| *\| *$/g, ''), item.header.length);
+                 }
+
+                 return item;
+               }

              }
              }

-           });
-         },
-         //
-         // Pass params object of the form:
-         // {
-         //   key: 'string',     // required
-         //   value: 'string'    // optional
-         // }
-         //
-         // Get an result object used to display tag documentation
-         // {
-         //   title:        'string',
-         //   description:  'string',
-         //   editURL:      'string',
-         //   imageURL:     'string',
-         //   wiki:         { title: 'string', text: 'string', url: 'string' }
-         // }
-         //
-         getDocs: function getDocs(params, callback) {
-           var that = this;
-           var langCodes = _mainLocalizer.localeCodes().map(function (code) {
-             return code.toLowerCase();
-           });
-           params.langCodes = langCodes;
-           this.getEntity(params, function (err, data) {
-             if (err) {
-               callback(err);
-               return;
+           }
+         }, {
+           key: "lheading",
+           value: function lheading(src) {
+             var cap = this.rules.block.lheading.exec(src);
+
+             if (cap) {
+               return {
+                 type: 'heading',
+                 raw: cap[0],
+                 depth: cap[2].charAt(0) === '=' ? 1 : 2,
+                 text: cap[1]
+               };

              }
              }

+           }
+         }, {
+           key: "paragraph",
+           value: function paragraph(src) {
+             var cap = this.rules.block.paragraph.exec(src);

 
 

-             var entity = data.rtype || data.tag || data.key;
+             if (cap) {
+               return {
+                 type: 'paragraph',
+                 raw: cap[0],
+                 text: cap[1].charAt(cap[1].length - 1) === '\n' ? cap[1].slice(0, -1) : cap[1]
+               };
+             }
+           }
+         }, {
+           key: "text",
+           value: function text(src) {
+             var cap = this.rules.block.text.exec(src);

 
 

-             if (!entity) {
-               callback('No entity');
-               return;
+             if (cap) {
+               return {
+                 type: 'text',
+                 raw: cap[0],
+                 text: cap[0]
+               };

              }
              }

+           }
+         }, {
+           key: "escape",
+           value: function escape(src) {
+             var cap = this.rules.inline.escape.exec(src);

 
 

-             var i;
-             var description;
+             if (cap) {
+               return {
+                 type: 'escape',
+                 raw: cap[0],
+                 text: _escape(cap[1])
+               };
+             }
+           }
+         }, {
+           key: "tag",
+           value: function tag(src, inLink, inRawBlock) {
+             var cap = this.rules.inline.tag.exec(src);

 
 

-             for (i in langCodes) {
-               var _code = langCodes[i];
+             if (cap) {
+               if (!inLink && /^<a /i.test(cap[0])) {
+                 inLink = true;
+               } else if (inLink && /^<\/a>/i.test(cap[0])) {
+                 inLink = false;
+               }

 
 

-               if (entity.descriptions[_code] && entity.descriptions[_code].language === _code) {
-                 description = entity.descriptions[_code];
-                 break;
+               if (!inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
+                 inRawBlock = true;
+               } else if (inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
+                 inRawBlock = false;

                }
                }

+
+               return {
+                 type: this.options.sanitize ? 'text' : 'html',
+                 raw: cap[0],
+                 inLink: inLink,
+                 inRawBlock: inRawBlock,
+                 text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0]
+               };

              }
              }

+           }
+         }, {
+           key: "link",
+           value: function link(src) {
+             var cap = this.rules.inline.link.exec(src);

 
 

-             if (!description && Object.values(entity.descriptions).length) description = Object.values(entity.descriptions)[0]; // prepare result
+             if (cap) {
+               var trimmedUrl = cap[2].trim();

 
 

-             var result = {
-               title: entity.title,
-               description: description ? description.value : '',
-               descriptionLocaleCode: description ? description.language : '',
-               editURL: 'https://wiki.openstreetmap.org/wiki/' + entity.title
-             }; // add image
+               if (!this.options.pedantic && /^</.test(trimmedUrl)) {
+                 // commonmark requires matching angle brackets
+                 if (!/>$/.test(trimmedUrl)) {
+                   return;
+                 } // ending angle bracket cannot be escaped

 
 

-             if (entity.claims) {
-               var imageroot;
-               var image = that.claimToValue(entity, 'P4', langCodes[0]);

 
 

-               if (image) {
-                 imageroot = 'https://commons.wikimedia.org/w/index.php';
-               } else {
-                 image = that.claimToValue(entity, 'P28', langCodes[0]);
+                 var rtrimSlash = rtrim(trimmedUrl.slice(0, -1), '\\');

 
 

-                 if (image) {
-                   imageroot = 'https://wiki.openstreetmap.org/w/index.php';
+                 if ((trimmedUrl.length - rtrimSlash.length) % 2 === 0) {
+                   return;
+                 }
+               } else {
+                 // find closing parenthesis
+                 var lastParenIndex = findClosingBracket(cap[2], '()');
+
+                 if (lastParenIndex > -1) {
+                   var start = cap[0].indexOf('!') === 0 ? 5 : 4;
+                   var linkLen = start + cap[1].length + lastParenIndex;
+                   cap[2] = cap[2].substring(0, lastParenIndex);
+                   cap[0] = cap[0].substring(0, linkLen).trim();
+                   cap[3] = '';

                  }
                }
 
                  }
                }
 

-               if (imageroot && image) {
-                 result.imageURL = imageroot + '?' + utilQsString({
-                   title: 'Special:Redirect/file/' + image,
-                   width: 400
-                 });
-               }
-             } // Try to get a wiki page from tag data item first, followed by the corresponding key data item.
-             // If neither tag nor key data item contain a wiki page in the needed language nor English,
-             // get the first found wiki page from either the tag or the key item.
-
+               var href = cap[2];
+               var title = '';

 
 

-             var rtypeWiki = that.monolingualClaimToValueObj(data.rtype, 'P31');
-             var tagWiki = that.monolingualClaimToValueObj(data.tag, 'P31');
-             var keyWiki = that.monolingualClaimToValueObj(data.key, 'P31');
-             var wikis = [rtypeWiki, tagWiki, keyWiki];
+               if (this.options.pedantic) {
+                 // split pedantic href and title
+                 var link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);

 
 

-             for (i in wikis) {
-               var wiki = wikis[i];
+                 if (link) {
+                   href = link[1];
+                   title = link[3];
+                 }
+               } else {
+                 title = cap[3] ? cap[3].slice(1, -1) : '';
+               }

 
 

-               for (var j in langCodes) {
-                 var code = langCodes[j];
-                 var referenceId = langCodes[0].split('-')[0] !== 'en' && code.split('-')[0] === 'en' ? 'inspector.wiki_en_reference' : 'inspector.wiki_reference';
-                 var info = getWikiInfo(wiki, code, referenceId);
+               href = href.trim();

 
 

-                 if (info) {
-                   result.wiki = info;
-                   break;
+               if (/^</.test(href)) {
+                 if (this.options.pedantic && !/>$/.test(trimmedUrl)) {
+                   // pedantic allows starting angle bracket without ending angle bracket
+                   href = href.slice(1);
+                 } else {
+                   href = href.slice(1, -1);

                  }
                }
 
                  }
                }
 

-               if (result.wiki) break;
+               return outputLink(cap, {
+                 href: href ? href.replace(this.rules.inline._escapes, '$1') : href,
+                 title: title ? title.replace(this.rules.inline._escapes, '$1') : title
+               }, cap[0]);

              }
              }

+           }
+         }, {
+           key: "reflink",
+           value: function reflink(src, links) {
+             var cap;

 
 

-             callback(null, result); // Helper method to get wiki info if a given language exists
+             if ((cap = this.rules.inline.reflink.exec(src)) || (cap = this.rules.inline.nolink.exec(src))) {
+               var link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
+               link = links[link.toLowerCase()];

 
 

-             function getWikiInfo(wiki, langCode, tKey) {
-               if (wiki && wiki[langCode]) {
+               if (!link || !link.href) {
+                 var text = cap[0].charAt(0);

                  return {
                  return {

-                   title: wiki[langCode],
-                   text: tKey,
-                   url: 'https://wiki.openstreetmap.org/wiki/' + wiki[langCode]
+                   type: 'text',
+                   raw: text,
+                   text: text

                  };
                }
                  };
                }

-             }
-           });
-         },
-         addLocale: function addLocale(langCode, qid) {
-           // Makes it easier to unit test
-           _localeIDs[langCode] = qid;
-         },
-         apibase: function apibase(val) {
-           if (!arguments.length) return _apibase;
-           _apibase = val;
-           return this;
-         }
-       };
-
-       var jsonpCache = {};
-       window.jsonpCache = jsonpCache;
-       function jsonpRequest(url, callback) {
-         var request = {
-           abort: function abort() {}
-         };
-
-         if (window.JSONP_FIX) {
-           if (window.JSONP_DELAY === 0) {
-             callback(window.JSONP_FIX);
-           } else {
-             var t = window.setTimeout(function () {
-               callback(window.JSONP_FIX);
-             }, window.JSONP_DELAY || 0);

 
 

-             request.abort = function () {
-               window.clearTimeout(t);
-             };
+               return outputLink(cap, link, cap[0]);
+             }

            }
            }

+         }, {
+           key: "emStrong",
+           value: function emStrong(src, maskedSrc) {
+             var prevChar = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
+             var match = this.rules.inline.emStrong.lDelim.exec(src);
+             if (!match) return; // _ can't be between two alphanumerics. \p{L}\p{N} includes non-english alphabet/numbers as well

 
 

-           return request;
-         }
-
-         function rand() {
-           var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
-           var c = '';
-           var i = -1;
+             if (match[3] && prevChar.match(/(?:[0-9A-Za-z\xAA\xB2\xB3\xB5\xB9\xBA\xBC-\xBE\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0560-\u0588\u05D0-\u05EA\u05EF-\u05F2\u0620-\u064A\u0660-\u0669\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07C0-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u0860-\u086A\u08A0-\u08B4\u08B6-\u08C7\u0904-\u0939\u093D\u0950\u0958-\u0961\u0966-\u096F\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09E6-\u09F1\u09F4-\u09F9\u09FC\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A66-\u0A6F\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AE6-\u0AEF\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B66-\u0B6F\u0B71-\u0B77\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0BE6-\u0BF2\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C66-\u0C6F\u0C78-\u0C7E\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CE6-\u0CEF\u0CF1\u0CF2\u0D04-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D58-\u0D61\u0D66-\u0D78\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DE6-\u0DEF\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E86-\u0E8A\u0E8C-\u0EA3\u0EA5\u0EA7-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F20-\u0F33\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F-\u1049\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u1090-\u1099\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1369-\u137C\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u17E0-\u17E9\u17F0-\u17F9\u1810-\u1819\u1820-\u1878\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A16\u1A20-\u1A54\u1A80-\u1A89\u1A90-\u1A99\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B50-\u1B59\u1B83-\u1BA0\u1BAE-\u1BE5\u1C00-\u1C23\u1C40-\u1C49\u1C4D-\u1C7D\u1C80-\u1C88\u1C90-\u1CBA\u1CBD-\u1CBF\u1CE9-\u1CEC\u1CEE-\u1CF3\u1CF5\u1CF6\u1CFA\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2070\u2071\u2074-\u2079\u207F-\u2089\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2150-\u2189\u2460-\u249B\u24EA-\u24FF\u2776-\u2793\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2CFD\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312F\u3131-\u318E\u3192-\u3195\u31A0-\u31BF\u31F0-\u31FF\u3220-\u3229\u3248-\u324F\u3251-\u325F\u3280-\u3289\u32B1-\u32BF\u3400-\u4DBF\u4E00-\u9FFC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7BF\uA7C2-\uA7CA\uA7F5-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA830-\uA835\uA840-\uA873\uA882-\uA8B3\uA8D0-\uA8D9\uA8F2-\uA8F7\uA8FB\uA8FD\uA8FE\uA900-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF-\uA9D9\uA9E0-\uA9E4\uA9E6-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA50-\uAA59\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB69\uAB70-\uABE2\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD07-\uDD33\uDD40-\uDD78\uDD8A\uDD8B\uDE80-\uDE9C\uDEA0-\uDED0\uDEE1-\uDEFB\uDF00-\uDF23\uDF2D-\uDF4A\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC58-\uDC76\uDC79-\uDC9E\uDCA7-\uDCAF\uDCE0-\uDCF2\uDCF4\uDCF5\uDCFB-\uDD1B\uDD20-\uDD39\uDD80-\uDDB7\uDDBC-\uDDCF\uDDD2-\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE35\uDE40-\uDE48\uDE60-\uDE7E\uDE80-\uDE9F\uDEC0-\uDEC7\uDEC9-\uDEE4\uDEEB-\uDEEF\uDF00-\uDF35\uDF40-\uDF55\uDF58-\uDF72\uDF78-\uDF91\uDFA9-\uDFAF]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2\uDCFA-\uDD23\uDD30-\uDD39\uDE60-\uDE7E\uDE80-\uDEA9\uDEB0\uDEB1\uDF00-\uDF27\uDF30-\uDF45\uDF51-\uDF54\uDFB0-\uDFCB\uDFE0-\uDFF6]|\uD804[\uDC03-\uDC37\uDC52-\uDC6F\uDC83-\uDCAF\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD03-\uDD26\uDD36-\uDD3F\uDD44\uDD47\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDD0-\uDDDA\uDDDC\uDDE1-\uDDF4\uDE00-\uDE11\uDE13-\uDE2B\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEDE\uDEF0-\uDEF9\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF50\uDF5D-\uDF61]|\uD805[\uDC00-\uDC34\uDC47-\uDC4A\uDC50-\uDC59\uDC5F-\uDC61\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDAE\uDDD8-\uDDDB\uDE00-\uDE2F\uDE44\uDE50-\uDE59\uDE80-\uDEAA\uDEB8\uDEC0-\uDEC9\uDF00-\uDF1A\uDF30-\uDF3B]|\uD806[\uDC00-\uDC2B\uDCA0-\uDCF2\uDCFF-\uDD06\uDD09\uDD0C-\uDD13\uDD15\uDD16\uDD18-\uDD2F\uDD3F\uDD41\uDD50-\uDD59\uDDA0-\uDDA7\uDDAA-\uDDD0\uDDE1\uDDE3\uDE00\uDE0B-\uDE32\uDE3A\uDE50\uDE5C-\uDE89\uDE9D\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC2E\uDC40\uDC50-\uDC6C\uDC72-\uDC8F\uDD00-\uDD06\uDD08\uDD09\uDD0B-\uDD30\uDD46\uDD50-\uDD59\uDD60-\uDD65\uDD67\uDD68\uDD6A-\uDD89\uDD98\uDDA0-\uDDA9\uDEE0-\uDEF2\uDFB0\uDFC0-\uDFD4]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD822\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879\uD880-\uD883][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF50-\uDF59\uDF5B-\uDF61\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDE40-\uDE96\uDF00-\uDF4A\uDF50\uDF93-\uDF9F\uDFE0\uDFE1\uDFE3]|\uD821[\uDC00-\uDFF7]|\uD823[\uDC00-\uDCD5\uDD00-\uDD08]|\uD82C[\uDC00-\uDD1E\uDD50-\uDD52\uDD64-\uDD67\uDD70-\uDEFB]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD834[\uDEE0-\uDEF3\uDF60-\uDF78]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD838[\uDD00-\uDD2C\uDD37-\uDD3D\uDD40-\uDD49\uDD4E\uDEC0-\uDEEB\uDEF0-\uDEF9]|\uD83A[\uDC00-\uDCC4\uDCC7-\uDCCF\uDD00-\uDD43\uDD4B\uDD50-\uDD59]|\uD83B[\uDC71-\uDCAB\uDCAD-\uDCAF\uDCB1-\uDCB4\uDD01-\uDD2D\uDD2F-\uDD3D\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD83C[\uDD00-\uDD0C]|\uD83E[\uDFF0-\uDFF9]|\uD869[\uDC00-\uDEDD\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D]|\uD884[\uDC00-\uDF4A])/)) return;
+             var nextChar = match[1] || match[2] || '';

 
 

-           while (++i < 15) {
-             c += chars.charAt(Math.floor(Math.random() * 52));
-           }
+             if (!nextChar || nextChar && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar))) {
+               var lLength = match[0].length - 1;
+               var rDelim,
+                   rLength,
+                   delimTotal = lLength,
+                   midDelimTotal = 0;
+               var endReg = match[0][0] === '*' ? this.rules.inline.emStrong.rDelimAst : this.rules.inline.emStrong.rDelimUnd;
+               endReg.lastIndex = 0; // Clip maskedSrc to same section of string as src (move to lexer?)

 
 

-           return c;
-         }
+               maskedSrc = maskedSrc.slice(-1 * src.length + lLength);

 
 

-         function create(url) {
-           var e = url.match(/callback=(\w+)/);
-           var c = e ? e[1] : rand();
+               while ((match = endReg.exec(maskedSrc)) != null) {
+                 rDelim = match[1] || match[2] || match[3] || match[4] || match[5] || match[6];
+                 if (!rDelim) continue; // skip single * in __abc*abc__

 
 

-           jsonpCache[c] = function (data) {
-             if (jsonpCache[c]) {
-               callback(data);
-             }
+                 rLength = rDelim.length;

 
 

-             finalize();
-           };
+                 if (match[3] || match[4]) {
+                   // found another Left Delim
+                   delimTotal += rLength;
+                   continue;
+                 } else if (match[5] || match[6]) {
+                   // either Left or Right Delim
+                   if (lLength % 3 && !((lLength + rLength) % 3)) {
+                     midDelimTotal += rLength;
+                     continue; // CommonMark Emphasis Rules 9-10
+                   }
+                 }

 
 

-           function finalize() {
-             delete jsonpCache[c];
-             script.remove();
-           }
+                 delimTotal -= rLength;
+                 if (delimTotal > 0) continue; // Haven't found enough closing delimiters
+                 // Remove extra characters. *a*** -> *a*

 
 

-           request.abort = finalize;
-           return 'jsonpCache.' + c;
-         }
+                 rLength = Math.min(rLength, rLength + delimTotal + midDelimTotal); // Create `em` if smallest delimiter has odd char count. *a***

 
 

-         var cb = create(url);
-         var script = select('head').append('script').attr('type', 'text/javascript').attr('src', url.replace(/(\{|%7B)callback(\}|%7D)/, cb));
-         return request;
-       }
+                 if (Math.min(lLength, rLength) % 2) {
+                   return {
+                     type: 'em',
+                     raw: src.slice(0, lLength + match.index + rLength + 1),
+                     text: src.slice(1, lLength + match.index + rLength)
+                   };
+                 } // Create 'strong' if smallest delimiter has even char count. **a***

 
 

-       var bubbleApi = 'https://dev.virtualearth.net/mapcontrol/HumanScaleServices/GetBubbles.ashx?';
-       var streetsideImagesApi = 'https://t.ssl.ak.tiles.virtualearth.net/tiles/';
-       var bubbleAppKey = 'AuftgJsO0Xs8Ts4M1xZUQJQXJNsvmh3IV8DkNieCiy3tCwCUMq76-WpkrBtNAuEm';
-       var pannellumViewerCSS = 'pannellum-streetside/pannellum.css';
-       var pannellumViewerJS = 'pannellum-streetside/pannellum.js';
-       var maxResults$2 = 2000;
-       var tileZoom$2 = 16.5;
-       var tiler$6 = utilTiler().zoomExtent([tileZoom$2, tileZoom$2]).skipNullIsland(true);
-       var dispatch$7 = dispatch('loadedImages', 'viewerChanged');
-       var minHfov = 10; // zoom in degrees:  20, 10, 5

 
 

-       var maxHfov = 90; // zoom out degrees
+                 return {
+                   type: 'strong',
+                   raw: src.slice(0, lLength + match.index + rLength + 1),
+                   text: src.slice(2, lLength + match.index + rLength - 1)
+                 };
+               }
+             }
+           }
+         }, {
+           key: "codespan",
+           value: function codespan(src) {
+             var cap = this.rules.inline.code.exec(src);

 
 

-       var defaultHfov = 45;
-       var _hires = false;
-       var _resolution = 512; // higher numbers are slower - 512, 1024, 2048, 4096
+             if (cap) {
+               var text = cap[2].replace(/\n/g, ' ');
+               var hasNonSpaceChars = /[^ ]/.test(text);
+               var hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);

 
 

-       var _currScene = 0;
+               if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
+                 text = text.substring(1, text.length - 1);
+               }

 
 

-       var _ssCache;
+               text = _escape(text, true);
+               return {
+                 type: 'codespan',
+                 raw: cap[0],
+                 text: text
+               };
+             }
+           }
+         }, {
+           key: "br",
+           value: function br(src) {
+             var cap = this.rules.inline.br.exec(src);

 
 

-       var _pannellumViewer;
+             if (cap) {
+               return {
+                 type: 'br',
+                 raw: cap[0]
+               };
+             }
+           }
+         }, {
+           key: "del",
+           value: function del(src) {
+             var cap = this.rules.inline.del.exec(src);

 
 

-       var _sceneOptions = {
-         showFullscreenCtrl: false,
-         autoLoad: true,
-         compass: true,
-         yaw: 0,
-         minHfov: minHfov,
-         maxHfov: maxHfov,
-         hfov: defaultHfov,
-         type: 'cubemap',
-         cubeMap: []
-       };
+             if (cap) {
+               return {
+                 type: 'del',
+                 raw: cap[0],
+                 text: cap[2]
+               };
+             }
+           }
+         }, {
+           key: "autolink",
+           value: function autolink(src, mangle) {
+             var cap = this.rules.inline.autolink.exec(src);

 
 

-       var _loadViewerPromise$2;
-       /**
-        * abortRequest().
-        */
+             if (cap) {
+               var text, href;

 
 

+               if (cap[2] === '@') {
+                 text = _escape(this.options.mangle ? mangle(cap[1]) : cap[1]);
+                 href = 'mailto:' + text;
+               } else {
+                 text = _escape(cap[1]);
+                 href = text;
+               }

 
 

-       function abortRequest$6(i) {
-         i.abort();
-       }
-       /**
-        * localeTimeStamp().
-        */
+               return {
+                 type: 'link',
+                 raw: cap[0],
+                 text: text,
+                 href: href,
+                 tokens: [{
+                   type: 'text',
+                   raw: text,
+                   text: text
+                 }]
+               };
+             }
+           }
+         }, {
+           key: "url",
+           value: function url(src, mangle) {
+             var cap;

 
 

+             if (cap = this.rules.inline.url.exec(src)) {
+               var text, href;

 
 

-       function localeTimestamp(s) {
-         if (!s) return null;
-         var options = {
-           day: 'numeric',
-           month: 'short',
-           year: 'numeric'
-         };
-         var d = new Date(s);
-         if (isNaN(d.getTime())) return null;
-         return d.toLocaleString(_mainLocalizer.localeCode(), options);
-       }
-       /**
-        * loadTiles() wraps the process of generating tiles and then fetching image points for each tile.
-        */
+               if (cap[2] === '@') {
+                 text = _escape(this.options.mangle ? mangle(cap[0]) : cap[0]);
+                 href = 'mailto:' + text;
+               } else {
+                 // do extended autolink path validation
+                 var prevCapZero;

 
 

+                 do {
+                   prevCapZero = cap[0];
+                   cap[0] = this.rules.inline._backpedal.exec(cap[0])[0];
+                 } while (prevCapZero !== cap[0]);

 
 

-       function loadTiles$2(which, url, projection, margin) {
-         var tiles = tiler$6.margin(margin).getTiles(projection); // abort inflight requests that are no longer needed
+                 text = _escape(cap[0]);

 
 

-         var cache = _ssCache[which];
-         Object.keys(cache.inflight).forEach(function (k) {
-           var wanted = tiles.find(function (tile) {
-             return k.indexOf(tile.id + ',') === 0;
-           });
+                 if (cap[1] === 'www.') {
+                   href = 'http://' + text;
+                 } else {
+                   href = text;
+                 }
+               }

 
 

-           if (!wanted) {
-             abortRequest$6(cache.inflight[k]);
-             delete cache.inflight[k];
+               return {
+                 type: 'link',
+                 raw: cap[0],
+                 text: text,
+                 href: href,
+                 tokens: [{
+                   type: 'text',
+                   raw: text,
+                   text: text
+                 }]
+               };
+             }

            }
            }

-         });
-         tiles.forEach(function (tile) {
-           return loadNextTilePage$2(which, url, tile);
-         });
-       }
-       /**
-        * loadNextTilePage() load data for the next tile page in line.
-        */
-
-
-       function loadNextTilePage$2(which, url, tile) {
-         var cache = _ssCache[which];
-         var nextPage = cache.nextPage[tile.id] || 0;
-         var id = tile.id + ',' + String(nextPage);
-         if (cache.loaded[id] || cache.inflight[id]) return;
-         cache.inflight[id] = getBubbles(url, tile, function (bubbles) {
-           cache.loaded[id] = true;
-           delete cache.inflight[id];
-           if (!bubbles) return; // [].shift() removes the first element, some statistics info, not a bubble point
+         }, {
+           key: "inlineText",
+           value: function inlineText(src, inRawBlock, smartypants) {
+             var cap = this.rules.inline.text.exec(src);

 
 

-           bubbles.shift();
-           var features = bubbles.map(function (bubble) {
-             if (cache.points[bubble.id]) return null; // skip duplicates
+             if (cap) {
+               var text;

 
 

-             var loc = [bubble.lo, bubble.la];
-             var d = {
-               loc: loc,
-               key: bubble.id,
-               ca: bubble.he,
-               captured_at: bubble.cd,
-               captured_by: 'microsoft',
-               // nbn: bubble.nbn,
-               // pbn: bubble.pbn,
-               // ad: bubble.ad,
-               // rn: bubble.rn,
-               pr: bubble.pr,
-               // previous
-               ne: bubble.ne,
-               // next
-               pano: true,
-               sequenceKey: null
-             };
-             cache.points[bubble.id] = d; // a sequence starts here
+               if (inRawBlock) {
+                 text = this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : _escape(cap[0]) : cap[0];
+               } else {
+                 text = _escape(this.options.smartypants ? smartypants(cap[0]) : cap[0]);
+               }

 
 

-             if (bubble.pr === undefined) {
-               cache.leaders.push(bubble.id);
+               return {
+                 type: 'text',
+                 raw: cap[0],
+                 text: text
+               };

              }
              }

-
-             return {
-               minX: loc[0],
-               minY: loc[1],
-               maxX: loc[0],
-               maxY: loc[1],
-               data: d
-             };
-           }).filter(Boolean);
-           cache.rtree.load(features);
-           connectSequences();
-
-           if (which === 'bubbles') {
-             dispatch$7.call('loadedImages');

            }
            }

-         });
-       } // call this sometimes to connect the bubbles into sequences
-
-
-       function connectSequences() {
-         var cache = _ssCache.bubbles;
-         var keepLeaders = [];
-
-         for (var i = 0; i < cache.leaders.length; i++) {
-           var bubble = cache.points[cache.leaders[i]];
-           var seen = {}; // try to make a sequence.. use the key of the leader bubble.
+         }]);

 
 

-           var sequence = {
-             key: bubble.key,
-             bubbles: []
-           };
-           var complete = false;
+         return Tokenizer;
+       }();

 
 

-           do {
-             sequence.bubbles.push(bubble);
-             seen[bubble.key] = true;
+       var noopTest = helpers.noopTest,
+           edit = helpers.edit,
+           merge$1 = helpers.merge;
+       /**
+        * Block-Level Grammar
+        */

 
 

-             if (bubble.ne === undefined) {
-               complete = true;
-             } else {
-               bubble = cache.points[bubble.ne]; // advance to next
-             }
-           } while (bubble && !seen[bubble.key] && !complete);
+       var block$1 = {
+         newline: /^(?: *(?:\n|$))+/,
+         code: /^( {4}[^\n]+(?:\n(?: *(?:\n|$))*)?)+/,
+         fences: /^ {0,3}(`{3,}(?=[^`\n]*\n)|~{3,})([^\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/,
+         hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
+         heading: /^ {0,3}(#{1,6})(?=\s|$)(.*)(?:\n+|$)/,
+         blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
+         list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?! {0,3}bull )\n*|\s*$)/,
+         html: '^ {0,3}(?:' // optional indentation
+         + '<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
+         + '|comment[^\\n]*(\\n+|$)' // (2)
+         + '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
+         + '|<![A-Z][\\s\\S]*?(?:>\\n*|$)' // (4)
+         + '|<!\\[CDATA\\[[\\s\\S]*?(?:\\]\\]>\\n*|$)' // (5)
+         + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (6)
+         + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) open tag
+         + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) closing tag
+         + ')',
+         def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
+         nptable: noopTest,
+         table: noopTest,
+         lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
+         // regex template, placeholders will be replaced according to different paragraph
+         // interruption rules of commonmark and the original markdown spec:
+         _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html| +\n)[^\n]+)*)/,
+         text: /^[^\n]+/
+       };
+       block$1._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/;
+       block$1._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
+       block$1.def = edit(block$1.def).replace('label', block$1._label).replace('title', block$1._title).getRegex();
+       block$1.bullet = /(?:[*+-]|\d{1,9}[.)])/;
+       block$1.item = /^( *)(bull) ?[^\n]*(?:\n(?! *bull ?)[^\n]*)*/;
+       block$1.item = edit(block$1.item, 'gm').replace(/bull/g, block$1.bullet).getRegex();
+       block$1.listItemStart = edit(/^( *)(bull) */).replace('bull', block$1.bullet).getRegex();
+       block$1.list = edit(block$1.list).replace(/bull/g, block$1.bullet).replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))').replace('def', '\\n+(?=' + block$1.def.source + ')').getRegex();
+       block$1._tag = 'address|article|aside|base|basefont|blockquote|body|caption' + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' + '|track|ul';
+       block$1._comment = /<!--(?!-?>)[\s\S]*?(?:-->|$)/;
+       block$1.html = edit(block$1.html, 'i').replace('comment', block$1._comment).replace('tag', block$1._tag).replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/).getRegex();
+       block$1.paragraph = edit(block$1._paragraph).replace('hr', block$1.hr).replace('heading', ' {0,3}#{1,6} ').replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
+       .replace('blockquote', ' {0,3}>').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block$1._tag) // pars can be interrupted by type (6) html blocks
+       .getRegex();
+       block$1.blockquote = edit(block$1.blockquote).replace('paragraph', block$1.paragraph).getRegex();
+       /**
+        * Normal Block Grammar
+        */

 
 

-           if (complete) {
-             _ssCache.sequences[sequence.key] = sequence; // assign bubbles to the sequence
+       block$1.normal = merge$1({}, block$1);
+       /**
+        * GFM Block Grammar
+        */

 
 

-             for (var j = 0; j < sequence.bubbles.length; j++) {
-               sequence.bubbles[j].sequenceKey = sequence.key;
-             } // create a GeoJSON LineString
+       block$1.gfm = merge$1({}, block$1.normal, {
+         nptable: '^ *([^|\\n ].*\\|.*)\\n' // Header
+         + ' {0,3}([-:]+ *\\|[-| :]*)' // Align
+         + '(?:\\n((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)',
+         // Cells
+         table: '^ *\\|(.+)\\n' // Header
+         + ' {0,3}\\|?( *[-:]+[-| :]*)' // Align
+         + '(?:\\n *((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells

 
 

+       });
+       block$1.gfm.nptable = edit(block$1.gfm.nptable).replace('hr', block$1.hr).replace('heading', ' {0,3}#{1,6} ').replace('blockquote', ' {0,3}>').replace('code', ' {4}[^\\n]').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block$1._tag) // tables can be interrupted by type (6) html blocks
+       .getRegex();
+       block$1.gfm.table = edit(block$1.gfm.table).replace('hr', block$1.hr).replace('heading', ' {0,3}#{1,6} ').replace('blockquote', ' {0,3}>').replace('code', ' {4}[^\\n]').replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+       .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block$1._tag) // tables can be interrupted by type (6) html blocks
+       .getRegex();
+       /**
+        * Pedantic grammar (original John Gruber's loose markdown specification)
+        */

 
 

-             sequence.geojson = {
-               type: 'LineString',
-               properties: {
-                 captured_at: sequence.bubbles[0] ? sequence.bubbles[0].captured_at : null,
-                 captured_by: sequence.bubbles[0] ? sequence.bubbles[0].captured_by : null,
-                 key: sequence.key
-               },
-               coordinates: sequence.bubbles.map(function (d) {
-                 return d.loc;
-               })
-             };
-           } else {
-             keepLeaders.push(cache.leaders[i]);
-           }
-         } // couldn't complete these, save for later
+       block$1.pedantic = merge$1({}, block$1.normal, {
+         html: edit('^ *(?:comment *(?:\\n|\\s*$)' + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
+         + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))').replace('comment', block$1._comment).replace(/tag/g, '(?!(?:' + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub' + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)' + '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b').getRegex(),
+         def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
+         heading: /^(#{1,6})(.*)(?:\n+|$)/,
+         fences: noopTest,
+         // fences not supported
+         paragraph: edit(block$1.normal._paragraph).replace('hr', block$1.hr).replace('heading', ' *#{1,6} *[^\n]').replace('lheading', block$1.lheading).replace('blockquote', ' {0,3}>').replace('|fences', '').replace('|list', '').replace('|html', '').getRegex()
+       });
+       /**
+        * Inline-Level Grammar
+        */

 
 

+       var inline$1 = {
+         escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
+         autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
+         url: noopTest,
+         tag: '^comment' + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
+         + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
+         + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
+         + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
+         + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>',
+         // CDATA section
+         link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
+         reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,
+         nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,
+         reflinkSearch: 'reflink|nolink(?!\\()',
+         emStrong: {
+           lDelim: /^(?:\*+(?:([punct_])|[^\s*]))|^_+(?:([punct*])|([^\s_]))/,
+           //        (1) and (2) can only be a Right Delimiter. (3) and (4) can only be Left.  (5) and (6) can be either Left or Right.
+           //        () Skip other delimiter (1) #***                   (2) a***#, a***                   (3) #***a, ***a                 (4) ***#              (5) #***#                 (6) a***a
+           rDelimAst: /\_\_[^_*]*?\*[^_*]*?\_\_|[punct_](\*+)(?=[\s]|$)|[^punct*_\s](\*+)(?=[punct_\s]|$)|[punct_\s](\*+)(?=[^punct*_\s])|[\s](\*+)(?=[punct_])|[punct_](\*+)(?=[punct_])|[^punct*_\s](\*+)(?=[^punct*_\s])/,
+           rDelimUnd: /\*\*[^_*]*?\_[^_*]*?\*\*|[punct*](\_+)(?=[\s]|$)|[^punct*_\s](\_+)(?=[punct*\s]|$)|[punct*\s](\_+)(?=[^punct*_\s])|[\s](\_+)(?=[punct*])|[punct*](\_+)(?=[punct*])/ // ^- Not allowed for _

 
 

-         cache.leaders = keepLeaders;
-       }
+         },
+         code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
+         br: /^( {2,}|\\)\n(?!\s*$)/,
+         del: noopTest,
+         text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,
+         punctuation: /^([\spunctuation])/
+       }; // list of punctuation marks from CommonMark spec
+       // without * and _ to handle the different emphasis markers * and _
+
+       inline$1._punctuation = '!"#$%&\'()+\\-.,/:;<=>?@\\[\\]`^{|}~';
+       inline$1.punctuation = edit(inline$1.punctuation).replace(/punctuation/g, inline$1._punctuation).getRegex(); // sequences em should skip over [title](link), `code`, <html>
+
+       inline$1.blockSkip = /\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g;
+       inline$1.escapedEmSt = /\\\*|\\_/g;
+       inline$1._comment = edit(block$1._comment).replace('(?:-->|$)', '-->').getRegex();
+       inline$1.emStrong.lDelim = edit(inline$1.emStrong.lDelim).replace(/punct/g, inline$1._punctuation).getRegex();
+       inline$1.emStrong.rDelimAst = edit(inline$1.emStrong.rDelimAst, 'g').replace(/punct/g, inline$1._punctuation).getRegex();
+       inline$1.emStrong.rDelimUnd = edit(inline$1.emStrong.rDelimUnd, 'g').replace(/punct/g, inline$1._punctuation).getRegex();
+       inline$1._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g;
+       inline$1._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
+       inline$1._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/;
+       inline$1.autolink = edit(inline$1.autolink).replace('scheme', inline$1._scheme).replace('email', inline$1._email).getRegex();
+       inline$1._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
+       inline$1.tag = edit(inline$1.tag).replace('comment', inline$1._comment).replace('attribute', inline$1._attribute).getRegex();
+       inline$1._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
+       inline$1._href = /<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/;
+       inline$1._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
+       inline$1.link = edit(inline$1.link).replace('label', inline$1._label).replace('href', inline$1._href).replace('title', inline$1._title).getRegex();
+       inline$1.reflink = edit(inline$1.reflink).replace('label', inline$1._label).getRegex();
+       inline$1.reflinkSearch = edit(inline$1.reflinkSearch, 'g').replace('reflink', inline$1.reflink).replace('nolink', inline$1.nolink).getRegex();

        /**
        /**

-        * getBubbles() handles the request to the server for a tile extent of 'bubbles' (streetside image locations).
+        * Normal Inline Grammar

         */
 
         */
 

+       inline$1.normal = merge$1({}, inline$1);
+       /**
+        * Pedantic Inline Grammar
+        */

 
 

-       function getBubbles(url, tile, callback) {
-         var rect = tile.extent.rectangle();
-         var urlForRequest = url + utilQsString({
-           n: rect[3],
-           s: rect[1],
-           e: rect[2],
-           w: rect[0],
-           c: maxResults$2,
-           appkey: bubbleAppKey,
-           jsCallback: '{callback}'
-         });
-         return jsonpRequest(urlForRequest, function (data) {
-           if (!data || data.error) {
-             callback(null);
-           } else {
-             callback(data);
-           }
-         });
-       } // partition viewport into higher zoom tiles
-
+       inline$1.pedantic = merge$1({}, inline$1.normal, {
+         strong: {
+           start: /^__|\*\*/,
+           middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
+           endAst: /\*\*(?!\*)/g,
+           endUnd: /__(?!_)/g
+         },
+         em: {
+           start: /^_|\*/,
+           middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
+           endAst: /\*(?!\*)/g,
+           endUnd: /_(?!_)/g
+         },
+         link: edit(/^!?\[(label)\]\((.*?)\)/).replace('label', inline$1._label).getRegex(),
+         reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace('label', inline$1._label).getRegex()
+       });
+       /**
+        * GFM Inline Grammar
+        */

 
 

-       function partitionViewport$2(projection) {
-         var z = geoScaleToZoom(projection.scale());
-         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5
+       inline$1.gfm = merge$1({}, inline$1.normal, {
+         escape: edit(inline$1.escape).replace('])', '~|])').getRegex(),
+         _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,
+         url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,
+         _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,
+         del: /^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,
+         text: /^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/
+       });
+       inline$1.gfm.url = edit(inline$1.gfm.url, 'i').replace('email', inline$1.gfm._extended_email).getRegex();
+       /**
+        * GFM + Line Breaks Inline Grammar
+        */

 
 

-         var tiler = utilTiler().zoomExtent([z2, z2]);
-         return tiler.getTiles(projection).map(function (tile) {
-           return tile.extent;
-         });
-       } // no more than `limit` results per partition.
+       inline$1.breaks = merge$1({}, inline$1.gfm, {
+         br: edit(inline$1.br).replace('{2,}', '*').getRegex(),
+         text: edit(inline$1.gfm.text).replace('\\b_', '\\b_| {2,}\\n').replace(/\{2,\}/g, '*').getRegex()
+       });
+       var rules = {
+         block: block$1,
+         inline: inline$1
+       };

 
 

+       var Tokenizer$1 = Tokenizer_1;
+       var defaults$3 = defaults$5.exports.defaults;
+       var block = rules.block,
+           inline = rules.inline;
+       var repeatString = helpers.repeatString;
+       /**
+        * smartypants text replacement
+        */

 
 

-       function searchLimited$2(limit, projection, rtree) {
-         limit = limit || 5;
-         return partitionViewport$2(projection).reduce(function (result, extent) {
-           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
-             return d.data;
-           });
-           return found.length ? result.concat(found) : result;
-         }, []);
+       function smartypants(text) {
+         return text // em-dashes
+         .replace(/---/g, "\u2014") // en-dashes
+         .replace(/--/g, "\u2013") // opening singles
+         .replace(/(^|[-\u2014/(\[{"\s])'/g, "$1\u2018") // closing singles & apostrophes
+         .replace(/'/g, "\u2019") // opening doubles
+         .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, "$1\u201C") // closing doubles
+         .replace(/"/g, "\u201D") // ellipses
+         .replace(/\.{3}/g, "\u2026");

        }
        /**
        }
        /**

-        * loadImage()
+        * mangle email addresses

         */
 
 
         */
 
 

-       function loadImage(imgInfo) {
-         return new Promise(function (resolve) {
-           var img = new Image();
+       function mangle(text) {
+         var out = '',
+             i,
+             ch;
+         var l = text.length;

 
 

-           img.onload = function () {
-             var canvas = document.getElementById('ideditor-canvas' + imgInfo.face);
-             var ctx = canvas.getContext('2d');
-             ctx.drawImage(img, imgInfo.x, imgInfo.y);
-             resolve({
-               imgInfo: imgInfo,
-               status: 'ok'
-             });
-           };
+         for (i = 0; i < l; i++) {
+           ch = text.charCodeAt(i);

 
 

-           img.onerror = function () {
-             resolve({
-               data: imgInfo,
-               status: 'error'
-             });
-           };
+           if (Math.random() > 0.5) {
+             ch = 'x' + ch.toString(16);
+           }

 
 

-           img.setAttribute('crossorigin', '');
-           img.src = imgInfo.url;
-         });
+           out += '&#' + ch + ';';
+         }
+
+         return out;

        }
        /**
        }
        /**

-        * loadCanvas()
+        * Block Lexer

         */
 
 
         */
 
 

-       function loadCanvas(imageGroup) {
-         return Promise.all(imageGroup.map(loadImage)).then(function (data) {
-           var canvas = document.getElementById('ideditor-canvas' + data[0].imgInfo.face);
-           var which = {
-             '01': 0,
-             '02': 1,
-             '03': 2,
-             '10': 3,
-             '11': 4,
-             '12': 5
-           };
-           var face = data[0].imgInfo.face;
-           _sceneOptions.cubeMap[which[face]] = canvas.toDataURL('image/jpeg', 1.0);
-           return {
-             status: 'loadCanvas for face ' + data[0].imgInfo.face + 'ok'
+       var Lexer_1 = /*#__PURE__*/function () {
+         function Lexer(options) {
+           _classCallCheck$1(this, Lexer);
+
+           this.tokens = [];
+           this.tokens.links = Object.create(null);
+           this.options = options || defaults$3;
+           this.options.tokenizer = this.options.tokenizer || new Tokenizer$1();
+           this.tokenizer = this.options.tokenizer;
+           this.tokenizer.options = this.options;
+           var rules = {
+             block: block.normal,
+             inline: inline.normal

            };
            };

-         });
-       }
-       /**
-        * loadFaces()
-        */

 
 

+           if (this.options.pedantic) {
+             rules.block = block.pedantic;
+             rules.inline = inline.pedantic;
+           } else if (this.options.gfm) {
+             rules.block = block.gfm;

 
 

-       function loadFaces(faceGroup) {
-         return Promise.all(faceGroup.map(loadCanvas)).then(function () {
-           return {
-             status: 'loadFaces done'
-           };
-         });
-       }
+             if (this.options.breaks) {
+               rules.inline = inline.breaks;
+             } else {
+               rules.inline = inline.gfm;
+             }
+           }

 
 

-       function setupCanvas(selection, reset) {
-         if (reset) {
-           selection.selectAll('#ideditor-stitcher-canvases').remove();
-         } // Add the Streetside working canvases. These are used for 'stitching', or combining,
-         // multiple images for each of the six faces, before passing to the Pannellum control as DataUrls
+           this.tokenizer.rules = rules;
+         }
+         /**
+          * Expose Rules
+          */

 
 
 
 

-         selection.selectAll('#ideditor-stitcher-canvases').data([0]).enter().append('div').attr('id', 'ideditor-stitcher-canvases').attr('display', 'none').selectAll('canvas').data(['canvas01', 'canvas02', 'canvas03', 'canvas10', 'canvas11', 'canvas12']).enter().append('canvas').attr('id', function (d) {
-           return 'ideditor-' + d;
-         }).attr('width', _resolution).attr('height', _resolution);
-       }
+         _createClass$1(Lexer, [{
+           key: "lex",
+           value:
+           /**
+            * Preprocessing
+            */
+           function lex(src) {
+             src = src.replace(/\r\n|\r/g, '\n').replace(/\t/g, '    ');
+             this.blockTokens(src, this.tokens, true);
+             this.inline(this.tokens);
+             return this.tokens;
+           }
+           /**
+            * Lexing
+            */

 
 

-       function qkToXY(qk) {
-         var x = 0;
-         var y = 0;
-         var scale = 256;
+         }, {
+           key: "blockTokens",
+           value: function blockTokens(src) {
+             var tokens = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+             var top = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;

 
 

-         for (var i = qk.length; i > 0; i--) {
-           var key = qk[i - 1];
-           x += +(key === '1' || key === '3') * scale;
-           y += +(key === '2' || key === '3') * scale;
-           scale *= 2;
-         }
+             if (this.options.pedantic) {
+               src = src.replace(/^ +$/gm, '');
+             }

 
 

-         return [x, y];
-       }
+             var token, i, l, lastToken;

 
 

-       function getQuadKeys() {
-         var dim = _resolution / 256;
-         var quadKeys;
+             while (src) {
+               // newline
+               if (token = this.tokenizer.space(src)) {
+                 src = src.substring(token.raw.length);

 
 

-         if (dim === 16) {
-           quadKeys = ['0000', '0001', '0010', '0011', '0100', '0101', '0110', '0111', '1000', '1001', '1010', '1011', '1100', '1101', '1110', '1111', '0002', '0003', '0012', '0013', '0102', '0103', '0112', '0113', '1002', '1003', '1012', '1013', '1102', '1103', '1112', '1113', '0020', '0021', '0030', '0031', '0120', '0121', '0130', '0131', '1020', '1021', '1030', '1031', '1120', '1121', '1130', '1131', '0022', '0023', '0032', '0033', '0122', '0123', '0132', '0133', '1022', '1023', '1032', '1033', '1122', '1123', '1132', '1133', '0200', '0201', '0210', '0211', '0300', '0301', '0310', '0311', '1200', '1201', '1210', '1211', '1300', '1301', '1310', '1311', '0202', '0203', '0212', '0213', '0302', '0303', '0312', '0313', '1202', '1203', '1212', '1213', '1302', '1303', '1312', '1313', '0220', '0221', '0230', '0231', '0320', '0321', '0330', '0331', '1220', '1221', '1230', '1231', '1320', '1321', '1330', '1331', '0222', '0223', '0232', '0233', '0322', '0323', '0332', '0333', '1222', '1223', '1232', '1233', '1322', '1323', '1332', '1333', '2000', '2001', '2010', '2011', '2100', '2101', '2110', '2111', '3000', '3001', '3010', '3011', '3100', '3101', '3110', '3111', '2002', '2003', '2012', '2013', '2102', '2103', '2112', '2113', '3002', '3003', '3012', '3013', '3102', '3103', '3112', '3113', '2020', '2021', '2030', '2031', '2120', '2121', '2130', '2131', '3020', '3021', '3030', '3031', '3120', '3121', '3130', '3131', '2022', '2023', '2032', '2033', '2122', '2123', '2132', '2133', '3022', '3023', '3032', '3033', '3122', '3123', '3132', '3133', '2200', '2201', '2210', '2211', '2300', '2301', '2310', '2311', '3200', '3201', '3210', '3211', '3300', '3301', '3310', '3311', '2202', '2203', '2212', '2213', '2302', '2303', '2312', '2313', '3202', '3203', '3212', '3213', '3302', '3303', '3312', '3313', '2220', '2221', '2230', '2231', '2320', '2321', '2330', '2331', '3220', '3221', '3230', '3231', '3320', '3321', '3330', '3331', '2222', '2223', '2232', '2233', '2322', '2323', '2332', '2333', '3222', '3223', '3232', '3233', '3322', '3323', '3332', '3333'];
-         } else if (dim === 8) {
-           quadKeys = ['000', '001', '010', '011', '100', '101', '110', '111', '002', '003', '012', '013', '102', '103', '112', '113', '020', '021', '030', '031', '120', '121', '130', '131', '022', '023', '032', '033', '122', '123', '132', '133', '200', '201', '210', '211', '300', '301', '310', '311', '202', '203', '212', '213', '302', '303', '312', '313', '220', '221', '230', '231', '320', '321', '330', '331', '222', '223', '232', '233', '322', '323', '332', '333'];
-         } else if (dim === 4) {
-           quadKeys = ['00', '01', '10', '11', '02', '03', '12', '13', '20', '21', '30', '31', '22', '23', '32', '33'];
-         } else {
-           // dim === 2
-           quadKeys = ['0', '1', '2', '3'];
-         }
+                 if (token.type) {
+                   tokens.push(token);
+                 }

 
 

-         return quadKeys;
-       }
+                 continue;
+               } // code

 
 

-       var serviceStreetside = {
-         /**
-          * init() initialize streetside.
-          */
-         init: function init() {
-           if (!_ssCache) {
-             this.reset();
-           }

 
 

-           this.event = utilRebind(this, dispatch$7, 'on');
-         },
+               if (token = this.tokenizer.code(src)) {
+                 src = src.substring(token.raw.length);
+                 lastToken = tokens[tokens.length - 1]; // An indented code block cannot interrupt a paragraph.

 
 

-         /**
-          * reset() reset the cache.
-          */
-         reset: function reset() {
-           if (_ssCache) {
-             Object.values(_ssCache.bubbles.inflight).forEach(abortRequest$6);
-           }
+                 if (lastToken && lastToken.type === 'paragraph') {
+                   lastToken.raw += '\n' + token.raw;
+                   lastToken.text += '\n' + token.text;
+                 } else {
+                   tokens.push(token);
+                 }

 
 

-           _ssCache = {
-             bubbles: {
-               inflight: {},
-               loaded: {},
-               nextPage: {},
-               rtree: new RBush(),
-               points: {},
-               leaders: []
-             },
-             sequences: {}
-           };
-         },
+                 continue;
+               } // fences

 
 

-         /**
-          * bubbles()
-          */
-         bubbles: function bubbles(projection) {
-           var limit = 5;
-           return searchLimited$2(limit, projection, _ssCache.bubbles.rtree);
-         },
-         cachedImage: function cachedImage(imageKey) {
-           return _ssCache.bubbles.points[imageKey];
-         },
-         sequences: function sequences(projection) {
-           var viewport = projection.clipExtent();
-           var min = [viewport[0][0], viewport[1][1]];
-           var max = [viewport[1][0], viewport[0][1]];
-           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
-           var seen = {};
-           var results = []; // all sequences for bubbles in viewport

 
 

-           _ssCache.bubbles.rtree.search(bbox).forEach(function (d) {
-             var key = d.data.sequenceKey;
+               if (token = this.tokenizer.fences(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // heading

 
 

-             if (key && !seen[key]) {
-               seen[key] = true;
-               results.push(_ssCache.sequences[key].geojson);
-             }
-           });

 
 

-           return results;
-         },
+               if (token = this.tokenizer.heading(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // table no leading pipe (gfm)

 
 

-         /**
-          * loadBubbles()
-          */
-         loadBubbles: function loadBubbles(projection, margin) {
-           // by default: request 2 nearby tiles so we can connect sequences.
-           if (margin === undefined) margin = 2;
-           loadTiles$2('bubbles', bubbleApi, projection, margin);
-         },
-         viewer: function viewer() {
-           return _pannellumViewer;
-         },
-         initViewer: function initViewer() {
-           if (!window.pannellum) return;
-           if (_pannellumViewer) return;
-           _currScene += 1;

 
 

-           var sceneID = _currScene.toString();
+               if (token = this.tokenizer.nptable(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // hr

 
 

-           var options = {
-             'default': {
-               firstScene: sceneID
-             },
-             scenes: {}
-           };
-           options.scenes[sceneID] = _sceneOptions;
-           _pannellumViewer = window.pannellum.viewer('ideditor-viewer-streetside', options);
-         },
-         ensureViewerLoaded: function ensureViewerLoaded(context) {
-           if (_loadViewerPromise$2) return _loadViewerPromise$2; // create ms-wrapper, a photo wrapper class

 
 

-           var wrap = context.container().select('.photoviewer').selectAll('.ms-wrapper').data([0]); // inject ms-wrapper into the photoviewer div
-           // (used by all to house each custom photo viewer)
+               if (token = this.tokenizer.hr(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // blockquote

 
 

-           var wrapEnter = wrap.enter().append('div').attr('class', 'photo-wrapper ms-wrapper').classed('hide', true);
-           var that = this;
-           var pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // inject div to support streetside viewer (pannellum) and attribution line

 
 

-           wrapEnter.append('div').attr('id', 'ideditor-viewer-streetside').on(pointerPrefix + 'down.streetside', function () {
-             select(window).on(pointerPrefix + 'move.streetside', function () {
-               dispatch$7.call('viewerChanged');
-             }, true);
-           }).on(pointerPrefix + 'up.streetside pointercancel.streetside', function () {
-             select(window).on(pointerPrefix + 'move.streetside', null); // continue dispatching events for a few seconds, in case viewer has inertia.
+               if (token = this.tokenizer.blockquote(src)) {
+                 src = src.substring(token.raw.length);
+                 token.tokens = this.blockTokens(token.text, [], top);
+                 tokens.push(token);
+                 continue;
+               } // list

 
 

-             var t = timer(function (elapsed) {
-               dispatch$7.call('viewerChanged');

 
 

-               if (elapsed > 2000) {
-                 t.stop();
-               }
-             });
-           }).append('div').attr('class', 'photo-attribution fillD');
-           var controlsEnter = wrapEnter.append('div').attr('class', 'photo-controls-wrap').append('div').attr('class', 'photo-controls');
-           controlsEnter.append('button').on('click.back', step(-1)).html('◄');
-           controlsEnter.append('button').on('click.forward', step(1)).html('►'); // create working canvas for stitching together images
+               if (token = this.tokenizer.list(src)) {
+                 src = src.substring(token.raw.length);
+                 l = token.items.length;

 
 

-           wrap = wrap.merge(wrapEnter).call(setupCanvas, true); // Register viewer resize handler
+                 for (i = 0; i < l; i++) {
+                   token.items[i].tokens = this.blockTokens(token.items[i].text, [], false);
+                 }

 
 

-           context.ui().photoviewer.on('resize.streetside', function () {
-             if (_pannellumViewer) {
-               _pannellumViewer.resize();
-             }
-           });
-           _loadViewerPromise$2 = new Promise(function (resolve, reject) {
-             var loadedCount = 0;
+                 tokens.push(token);
+                 continue;
+               } // html

 
 

-             function loaded() {
-               loadedCount += 1; // wait until both files are loaded

 
 

-               if (loadedCount === 2) resolve();
-             }
+               if (token = this.tokenizer.html(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // def

 
 

-             var head = select('head'); // load streetside pannellum viewer css

 
 

-             head.selectAll('#ideditor-streetside-viewercss').data([0]).enter().append('link').attr('id', 'ideditor-streetside-viewercss').attr('rel', 'stylesheet').attr('crossorigin', 'anonymous').attr('href', context.asset(pannellumViewerCSS)).on('load.serviceStreetside', loaded).on('error.serviceStreetside', function () {
-               reject();
-             }); // load streetside pannellum viewer js
+               if (top && (token = this.tokenizer.def(src))) {
+                 src = src.substring(token.raw.length);

 
 

-             head.selectAll('#ideditor-streetside-viewerjs').data([0]).enter().append('script').attr('id', 'ideditor-streetside-viewerjs').attr('crossorigin', 'anonymous').attr('src', context.asset(pannellumViewerJS)).on('load.serviceStreetside', loaded).on('error.serviceStreetside', function () {
-               reject();
-             });
-           })["catch"](function () {
-             _loadViewerPromise$2 = null;
-           });
-           return _loadViewerPromise$2;
+                 if (!this.tokens.links[token.tag]) {
+                   this.tokens.links[token.tag] = {
+                     href: token.href,
+                     title: token.title
+                   };
+                 }

 
 

-           function step(stepBy) {
-             return function () {
-               var viewer = context.container().select('.photoviewer');
-               var selected = viewer.empty() ? undefined : viewer.datum();
-               if (!selected) return;
-               var nextID = stepBy === 1 ? selected.ne : selected.pr;
+                 continue;
+               } // table (gfm)

 
 

-               var yaw = _pannellumViewer.getYaw();

 
 

-               var ca = selected.ca + yaw;
-               var origin = selected.loc; // construct a search trapezoid pointing out from current bubble
+               if (token = this.tokenizer.table(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // lheading

 
 

-               var meters = 35;
-               var p1 = [origin[0] + geoMetersToLon(meters / 5, origin[1]), origin[1]];
-               var p2 = [origin[0] + geoMetersToLon(meters / 2, origin[1]), origin[1] + geoMetersToLat(meters)];
-               var p3 = [origin[0] - geoMetersToLon(meters / 2, origin[1]), origin[1] + geoMetersToLat(meters)];
-               var p4 = [origin[0] - geoMetersToLon(meters / 5, origin[1]), origin[1]];
-               var poly = [p1, p2, p3, p4, p1]; // rotate it to face forward/backward

 
 

-               var angle = (stepBy === 1 ? ca : ca + 180) * (Math.PI / 180);
-               poly = geoRotate(poly, -angle, origin);
-               var extent = poly.reduce(function (extent, point) {
-                 return extent.extend(geoExtent(point));
-               }, geoExtent()); // find nearest other bubble in the search polygon
+               if (token = this.tokenizer.lheading(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // top-level paragraph

 
 

-               var minDist = Infinity;

 
 

-               _ssCache.bubbles.rtree.search(extent.bbox()).forEach(function (d) {
-                 if (d.data.key === selected.key) return;
-                 if (!geoPointInPolygon(d.data.loc, poly)) return;
-                 var dist = geoVecLength(d.data.loc, selected.loc);
-                 var theta = selected.ca - d.data.ca;
-                 var minTheta = Math.min(Math.abs(theta), 360 - Math.abs(theta));
+               if (top && (token = this.tokenizer.paragraph(src))) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // text
+
+
+               if (token = this.tokenizer.text(src)) {
+                 src = src.substring(token.raw.length);
+                 lastToken = tokens[tokens.length - 1];

 
 

-                 if (minTheta > 20) {
-                   dist += 5; // penalize distance if camera angles don't match
+                 if (lastToken && lastToken.type === 'text') {
+                   lastToken.raw += '\n' + token.raw;
+                   lastToken.text += '\n' + token.text;
+                 } else {
+                   tokens.push(token);

                  }
 
                  }
 

-                 if (dist < minDist) {
-                   nextID = d.data.key;
-                   minDist = dist;
+                 continue;
+               }
+
+               if (src) {
+                 var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+
+                 if (this.options.silent) {
+                   console.error(errMsg);
+                   break;
+                 } else {
+                   throw new Error(errMsg);

                  }
                  }

-               });
+               }
+             }

 
 

-               var nextBubble = nextID && that.cachedImage(nextID);
-               if (!nextBubble) return;
-               context.map().centerEase(nextBubble.loc);
-               that.selectImage(context, nextBubble.key).yaw(yaw).showViewer(context);
-             };
+             return tokens;

            }
            }

-         },
-         yaw: function yaw(_yaw) {
-           if (typeof _yaw !== 'number') return _yaw;
-           _sceneOptions.yaw = _yaw;
-           return this;
-         },
+         }, {
+           key: "inline",
+           value: function inline(tokens) {
+             var i, j, k, l2, row, token;
+             var l = tokens.length;

 
 

-         /**
-          * showViewer()
-          */
-         showViewer: function showViewer(context) {
-           var wrap = context.container().select('.photoviewer').classed('hide', false);
-           var isHidden = wrap.selectAll('.photo-wrapper.ms-wrapper.hide').size();
+             for (i = 0; i < l; i++) {
+               token = tokens[i];

 
 

-           if (isHidden) {
-             wrap.selectAll('.photo-wrapper:not(.ms-wrapper)').classed('hide', true);
-             wrap.selectAll('.photo-wrapper.ms-wrapper').classed('hide', false);
-           }
+               switch (token.type) {
+                 case 'paragraph':
+                 case 'text':
+                 case 'heading':
+                   {
+                     token.tokens = [];
+                     this.inlineTokens(token.text, token.tokens);
+                     break;
+                   }

 
 

-           return this;
-         },
+                 case 'table':
+                   {
+                     token.tokens = {
+                       header: [],
+                       cells: []
+                     }; // header

 
 

-         /**
-          * hideViewer()
-          */
-         hideViewer: function hideViewer(context) {
-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(null);
-           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
-           context.container().selectAll('.viewfield-group, .sequence, .icon-sign').classed('currentView', false);
-           this.updateUrlImage(null);
-           return this.setStyles(context, null, true);
-         },
+                     l2 = token.header.length;

 
 

-         /**
-          * selectImage().
-          */
-         selectImage: function selectImage(context, key) {
-           var that = this;
-           var d = this.cachedImage(key);
-           var viewer = context.container().select('.photoviewer');
-           if (!viewer.empty()) viewer.datum(d);
-           this.setStyles(context, null, true);
-           var wrap = context.container().select('.photoviewer .ms-wrapper');
-           var attribution = wrap.selectAll('.photo-attribution').html('');
-           wrap.selectAll('.pnlm-load-box') // display "loading.."
-           .style('display', 'block');
-           if (!d) return this;
-           this.updateUrlImage(key);
-           _sceneOptions.northOffset = d.ca;
-           var line1 = attribution.append('div').attr('class', 'attribution-row');
-           var hiresDomId = utilUniqueDomId('streetside-hires'); // Add hires checkbox
+                     for (j = 0; j < l2; j++) {
+                       token.tokens.header[j] = [];
+                       this.inlineTokens(token.header[j], token.tokens.header[j]);
+                     } // cells

 
 

-           var label = line1.append('label').attr('for', hiresDomId).attr('class', 'streetside-hires');
-           label.append('input').attr('type', 'checkbox').attr('id', hiresDomId).property('checked', _hires).on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             _hires = !_hires;
-             _resolution = _hires ? 1024 : 512;
-             wrap.call(setupCanvas, true);
-             var viewstate = {
-               yaw: _pannellumViewer.getYaw(),
-               pitch: _pannellumViewer.getPitch(),
-               hfov: _pannellumViewer.getHfov()
-             };
-             _sceneOptions = Object.assign(_sceneOptions, viewstate);
-             that.selectImage(context, d.key).showViewer(context);
-           });
-           label.append('span').html(_t.html('streetside.hires'));
-           var captureInfo = line1.append('div').attr('class', 'attribution-capture-info'); // Add capture date

 
 

-           if (d.captured_by) {
-             var yyyy = new Date().getFullYear();
-             captureInfo.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://www.microsoft.com/en-us/maps/streetside').html('©' + yyyy + ' Microsoft');
-             captureInfo.append('span').html('|');
-           }
+                     l2 = token.cells.length;

 
 

-           if (d.captured_at) {
-             captureInfo.append('span').attr('class', 'captured_at').html(localeTimestamp(d.captured_at));
-           } // Add image links
+                     for (j = 0; j < l2; j++) {
+                       row = token.cells[j];
+                       token.tokens.cells[j] = [];

 
 

+                       for (k = 0; k < row.length; k++) {
+                         token.tokens.cells[j][k] = [];
+                         this.inlineTokens(row[k], token.tokens.cells[j][k]);
+                       }
+                     }

 
 

-           var line2 = attribution.append('div').attr('class', 'attribution-row');
-           line2.append('a').attr('class', 'image-view-link').attr('target', '_blank').attr('href', 'https://www.bing.com/maps?cp=' + d.loc[1] + '~' + d.loc[0] + '&lvl=17&dir=' + d.ca + '&style=x&v=2&sV=1').html(_t.html('streetside.view_on_bing'));
-           line2.append('a').attr('class', 'image-report-link').attr('target', '_blank').attr('href', 'https://www.bing.com/maps/privacyreport/streetsideprivacyreport?bubbleid=' + encodeURIComponent(d.key) + '&focus=photo&lat=' + d.loc[1] + '&lng=' + d.loc[0] + '&z=17').html(_t.html('streetside.report'));
-           var bubbleIdQuadKey = d.key.toString(4);
-           var paddingNeeded = 16 - bubbleIdQuadKey.length;
+                     break;
+                   }

 
 

-           for (var i = 0; i < paddingNeeded; i++) {
-             bubbleIdQuadKey = '0' + bubbleIdQuadKey;
-           }
+                 case 'blockquote':
+                   {
+                     this.inline(token.tokens);
+                     break;
+                   }

 
 

-           var imgUrlPrefix = streetsideImagesApi + 'hs' + bubbleIdQuadKey;
-           var imgUrlSuffix = '.jpg?g=6338&n=z'; // Cubemap face code order matters here: front=01, right=02, back=03, left=10, up=11, down=12
+                 case 'list':
+                   {
+                     l2 = token.items.length;

 
 

-           var faceKeys = ['01', '02', '03', '10', '11', '12']; // Map images to cube faces
+                     for (j = 0; j < l2; j++) {
+                       this.inline(token.items[j].tokens);
+                     }

 
 

-           var quadKeys = getQuadKeys();
-           var faces = faceKeys.map(function (faceKey) {
-             return quadKeys.map(function (quadKey) {
-               var xy = qkToXY(quadKey);
-               return {
-                 face: faceKey,
-                 url: imgUrlPrefix + faceKey + quadKey + imgUrlSuffix,
-                 x: xy[0],
-                 y: xy[1]
-               };
-             });
-           });
-           loadFaces(faces).then(function () {
-             if (!_pannellumViewer) {
-               that.initViewer();
-             } else {
-               // make a new scene
-               _currScene += 1;
+                     break;
+                   }
+               }
+             }

 
 

-               var sceneID = _currScene.toString();
+             return tokens;
+           }
+           /**
+            * Lexing/Compiling
+            */

 
 

-               _pannellumViewer.addScene(sceneID, _sceneOptions).loadScene(sceneID); // remove previous scene
+         }, {
+           key: "inlineTokens",
+           value: function inlineTokens(src) {
+             var tokens = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+             var inLink = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+             var inRawBlock = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
+             var token, lastToken; // String with links masked to avoid interference with em and strong

 
 

+             var maskedSrc = src;
+             var match;
+             var keepPrevChar, prevChar; // Mask out reflinks

 
 

-               if (_currScene > 2) {
-                 sceneID = (_currScene - 1).toString();
+             if (this.tokens.links) {
+               var links = Object.keys(this.tokens.links);

 
 

-                 _pannellumViewer.removeScene(sceneID);
+               if (links.length > 0) {
+                 while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {
+                   if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {
+                     maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);
+                   }
+                 }

                }
                }

+             } // Mask out other blocks
+
+
+             while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
+               maskedSrc = maskedSrc.slice(0, match.index) + '[' + repeatString('a', match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
+             } // Mask out escaped em & strong delimiters
+
+
+             while ((match = this.tokenizer.rules.inline.escapedEmSt.exec(maskedSrc)) != null) {
+               maskedSrc = maskedSrc.slice(0, match.index) + '++' + maskedSrc.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex);

              }
              }

-           });
-           return this;
-         },
-         getSequenceKeyForBubble: function getSequenceKeyForBubble(d) {
-           return d && d.sequenceKey;
-         },
-         // Updates the currently highlighted sequence and selected bubble.
-         // Reset is only necessary when interacting with the viewport because
-         // this implicitly changes the currently selected bubble/sequence
-         setStyles: function setStyles(context, hovered, reset) {
-           if (reset) {
-             // reset all layers
-             context.container().selectAll('.viewfield-group').classed('highlighted', false).classed('hovered', false).classed('currentView', false);
-             context.container().selectAll('.sequence').classed('highlighted', false).classed('currentView', false);
-           }

 
 

-           var hoveredBubbleKey = hovered && hovered.key;
-           var hoveredSequenceKey = this.getSequenceKeyForBubble(hovered);
-           var hoveredSequence = hoveredSequenceKey && _ssCache.sequences[hoveredSequenceKey];
-           var hoveredBubbleKeys = hoveredSequence && hoveredSequence.bubbles.map(function (d) {
-             return d.key;
-           }) || [];
-           var viewer = context.container().select('.photoviewer');
-           var selected = viewer.empty() ? undefined : viewer.datum();
-           var selectedBubbleKey = selected && selected.key;
-           var selectedSequenceKey = this.getSequenceKeyForBubble(selected);
-           var selectedSequence = selectedSequenceKey && _ssCache.sequences[selectedSequenceKey];
-           var selectedBubbleKeys = selectedSequence && selectedSequence.bubbles.map(function (d) {
-             return d.key;
-           }) || []; // highlight sibling viewfields on either the selected or the hovered sequences
+             while (src) {
+               if (!keepPrevChar) {
+                 prevChar = '';
+               }

 
 

-           var highlightedBubbleKeys = utilArrayUnion(hoveredBubbleKeys, selectedBubbleKeys);
-           context.container().selectAll('.layer-streetside-images .viewfield-group').classed('highlighted', function (d) {
-             return highlightedBubbleKeys.indexOf(d.key) !== -1;
-           }).classed('hovered', function (d) {
-             return d.key === hoveredBubbleKey;
-           }).classed('currentView', function (d) {
-             return d.key === selectedBubbleKey;
-           });
-           context.container().selectAll('.layer-streetside-images .sequence').classed('highlighted', function (d) {
-             return d.properties.key === hoveredSequenceKey;
-           }).classed('currentView', function (d) {
-             return d.properties.key === selectedSequenceKey;
-           }); // update viewfields if needed
+               keepPrevChar = false; // escape

 
 

-           context.container().selectAll('.viewfield-group .viewfield').attr('d', viewfieldPath);
+               if (token = this.tokenizer.escape(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // tag

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;

 
 

-             if (d.pano && d.key !== selectedBubbleKey) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
-             } else {
-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
-             }
-           }
+               if (token = this.tokenizer.tag(src, inLink, inRawBlock)) {
+                 src = src.substring(token.raw.length);
+                 inLink = token.inLink;
+                 inRawBlock = token.inRawBlock;
+                 var _lastToken = tokens[tokens.length - 1];

 
 

-           return this;
-         },
-         updateUrlImage: function updateUrlImage(imageKey) {
-           if (!window.mocha) {
-             var hash = utilStringQs(window.location.hash);
+                 if (_lastToken && token.type === 'text' && _lastToken.type === 'text') {
+                   _lastToken.raw += token.raw;
+                   _lastToken.text += token.text;
+                 } else {
+                   tokens.push(token);
+                 }

 
 

-             if (imageKey) {
-               hash.photo = 'streetside/' + imageKey;
-             } else {
-               delete hash.photo;
-             }
+                 continue;
+               } // link

 
 

-             window.location.replace('#' + utilQsString(hash, true));
-           }
-         },

 
 

-         /**
-          * cache().
-          */
-         cache: function cache() {
-           return _ssCache;
-         }
-       };
+               if (token = this.tokenizer.link(src)) {
+                 src = src.substring(token.raw.length);

 
 

-       var _apibase$1 = 'https://taginfo.openstreetmap.org/api/4/';
-       var _inflight$2 = {};
-       var _popularKeys = {};
-       var _taginfoCache = {};
-       var tag_sorts = {
-         point: 'count_nodes',
-         vertex: 'count_nodes',
-         area: 'count_ways',
-         line: 'count_ways'
-       };
-       var tag_sort_members = {
-         point: 'count_node_members',
-         vertex: 'count_node_members',
-         area: 'count_way_members',
-         line: 'count_way_members',
-         relation: 'count_relation_members'
-       };
-       var tag_filters = {
-         point: 'nodes',
-         vertex: 'nodes',
-         area: 'ways',
-         line: 'ways'
-       };
-       var tag_members_fractions = {
-         point: 'count_node_members_fraction',
-         vertex: 'count_node_members_fraction',
-         area: 'count_way_members_fraction',
-         line: 'count_way_members_fraction',
-         relation: 'count_relation_members_fraction'
-       };
+                 if (token.type === 'link') {
+                   token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
+                 }

 
 

-       function sets(params, n, o) {
-         if (params.geometry && o[params.geometry]) {
-           params[n] = o[params.geometry];
-         }
+                 tokens.push(token);
+                 continue;
+               } // reflink, nolink

 
 

-         return params;
-       }

 
 

-       function setFilter(params) {
-         return sets(params, 'filter', tag_filters);
-       }
+               if (token = this.tokenizer.reflink(src, this.tokens.links)) {
+                 src = src.substring(token.raw.length);
+                 var _lastToken2 = tokens[tokens.length - 1];

 
 

-       function setSort(params) {
-         return sets(params, 'sortname', tag_sorts);
-       }
+                 if (token.type === 'link') {
+                   token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
+                   tokens.push(token);
+                 } else if (_lastToken2 && token.type === 'text' && _lastToken2.type === 'text') {
+                   _lastToken2.raw += token.raw;
+                   _lastToken2.text += token.text;
+                 } else {
+                   tokens.push(token);
+                 }

 
 

-       function setSortMembers(params) {
-         return sets(params, 'sortname', tag_sort_members);
-       }
+                 continue;
+               } // em & strong

 
 

-       function clean(params) {
-         return utilObjectOmit(params, ['geometry', 'debounce']);
-       }

 
 

-       function filterKeys(type) {
-         var count_type = type ? 'count_' + type : 'count_all';
-         return function (d) {
-           return parseFloat(d[count_type]) > 2500 || d.in_wiki;
-         };
-       }
+               if (token = this.tokenizer.emStrong(src, maskedSrc, prevChar)) {
+                 src = src.substring(token.raw.length);
+                 token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
+                 tokens.push(token);
+                 continue;
+               } // code

 
 

-       function filterMultikeys(prefix) {
-         return function (d) {
-           // d.key begins with prefix, and d.key contains no additional ':'s
-           var re = new RegExp('^' + prefix + '(.*)$');
-           var matches = d.key.match(re) || [];
-           return matches.length === 2 && matches[1].indexOf(':') === -1;
-         };
-       }

 
 

-       function filterValues(allowUpperCase) {
-         return function (d) {
-           if (d.value.match(/[;,]/) !== null) return false; // exclude some punctuation
+               if (token = this.tokenizer.codespan(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // br

 
 

-           if (!allowUpperCase && d.value.match(/[A-Z*]/) !== null) return false; // exclude uppercase letters

 
 

-           return parseFloat(d.fraction) > 0.0;
-         };
-       }
+               if (token = this.tokenizer.br(src)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // del (gfm)

 
 

-       function filterRoles(geometry) {
-         return function (d) {
-           if (d.role === '') return false; // exclude empty role

 
 

-           if (d.role.match(/[A-Z*;,]/) !== null) return false; // exclude uppercase letters and some punctuation
+               if (token = this.tokenizer.del(src)) {
+                 src = src.substring(token.raw.length);
+                 token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
+                 tokens.push(token);
+                 continue;
+               } // autolink

 
 

-           return parseFloat(d[tag_members_fractions[geometry]]) > 0.0;
-         };
-       }

 
 

-       function valKey(d) {
-         return {
-           value: d.key,
-           title: d.key
-         };
-       }
+               if (token = this.tokenizer.autolink(src, mangle)) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // url (gfm)

 
 

-       function valKeyDescription(d) {
-         var obj = {
-           value: d.value,
-           title: d.description || d.value
-         };

 
 

-         if (d.count) {
-           obj.count = d.count;
-         }
+               if (!inLink && (token = this.tokenizer.url(src, mangle))) {
+                 src = src.substring(token.raw.length);
+                 tokens.push(token);
+                 continue;
+               } // text

 
 

-         return obj;
-       }

 
 

-       function roleKey(d) {
-         return {
-           value: d.role,
-           title: d.role
-         };
-       } // sort keys with ':' lower than keys without ':'
+               if (token = this.tokenizer.inlineText(src, inRawBlock, smartypants)) {
+                 src = src.substring(token.raw.length);

 
 

+                 if (token.raw.slice(-1) !== '_') {
+                   // Track prevChar before string of ____ started
+                   prevChar = token.raw.slice(-1);
+                 }

 
 

-       function sortKeys(a, b) {
-         return a.key.indexOf(':') === -1 && b.key.indexOf(':') !== -1 ? -1 : a.key.indexOf(':') !== -1 && b.key.indexOf(':') === -1 ? 1 : 0;
-       }
+                 keepPrevChar = true;
+                 lastToken = tokens[tokens.length - 1];

 
 

-       var debouncedRequest$1 = debounce(request$1, 300, {
-         leading: false
-       });
+                 if (lastToken && lastToken.type === 'text') {
+                   lastToken.raw += token.raw;
+                   lastToken.text += token.text;
+                 } else {
+                   tokens.push(token);
+                 }

 
 

-       function request$1(url, params, exactMatch, callback, loaded) {
-         if (_inflight$2[url]) return;
-         if (checkCache(url, params, exactMatch, callback)) return;
-         var controller = new AbortController();
-         _inflight$2[url] = controller;
-         d3_json(url, {
-           signal: controller.signal
-         }).then(function (result) {
-           delete _inflight$2[url];
-           if (loaded) loaded(null, result);
-         })["catch"](function (err) {
-           delete _inflight$2[url];
-           if (err.name === 'AbortError') return;
-           if (loaded) loaded(err.message);
-         });
-       }
+                 continue;
+               }

 
 

-       function checkCache(url, params, exactMatch, callback) {
-         var rp = params.rp || 25;
-         var testQuery = params.query || '';
-         var testUrl = url;
+               if (src) {
+                 var errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);

 
 

-         do {
-           var hit = _taginfoCache[testUrl]; // exact match, or shorter match yielding fewer than max results (rp)
+                 if (this.options.silent) {
+                   console.error(errMsg);
+                   break;
+                 } else {
+                   throw new Error(errMsg);
+                 }
+               }
+             }

 
 

-           if (hit && (url === testUrl || hit.length < rp)) {
-             callback(null, hit);
-             return true;
-           } // don't try to shorten the query
+             return tokens;
+           }
+         }], [{
+           key: "rules",
+           get: function get() {
+             return {
+               block: block,
+               inline: inline
+             };
+           }
+           /**
+            * Static Lex Method
+            */
+
+         }, {
+           key: "lex",
+           value: function lex(src, options) {
+             var lexer = new Lexer(options);
+             return lexer.lex(src);
+           }
+           /**
+            * Static Lex Inline Method
+            */
+
+         }, {
+           key: "lexInline",
+           value: function lexInline(src, options) {
+             var lexer = new Lexer(options);
+             return lexer.inlineTokens(src);
+           }
+         }]);

 
 

+         return Lexer;
+       }();

 
 

-           if (exactMatch || !testQuery.length) return false; // do shorten the query to see if we already have a cached result
-           // that has returned fewer than max results (rp)
+       var defaults$2 = defaults$5.exports.defaults;
+       var cleanUrl = helpers.cleanUrl,
+           escape$2 = helpers.escape;
+       /**
+        * Renderer
+        */

 
 

-           testQuery = testQuery.slice(0, -1);
-           testUrl = url.replace(/&query=(.*?)&/, '&query=' + testQuery + '&');
-         } while (testQuery.length >= 0);
+       var Renderer_1 = /*#__PURE__*/function () {
+         function Renderer(options) {
+           _classCallCheck$1(this, Renderer);

 
 

-         return false;
-       }
+           this.options = options || defaults$2;
+         }

 
 

-       var serviceTaginfo = {
-         init: function init() {
-           _inflight$2 = {};
-           _taginfoCache = {};
-           _popularKeys = {
-             // manually exclude some keys – #5377, #7485
-             postal_code: true,
-             full_name: true,
-             loc_name: true,
-             reg_name: true,
-             short_name: true,
-             sorting_name: true,
-             artist_name: true,
-             nat_name: true,
-             long_name: true,
-             'bridge:name': true
-           }; // Fetch popular keys.  We'll exclude these from `values`
-           // lookups because they stress taginfo, and they aren't likely
-           // to yield meaningful autocomplete results.. see #3955
+         _createClass$1(Renderer, [{
+           key: "code",
+           value: function code(_code, infostring, escaped) {
+             var lang = (infostring || '').match(/\S*/)[0];

 
 

-           var params = {
-             rp: 100,
-             sortname: 'values_all',
-             sortorder: 'desc',
-             page: 1,
-             debounce: false,
-             lang: _mainLocalizer.languageCode()
-           };
-           this.keys(params, function (err, data) {
-             if (err) return;
-             data.forEach(function (d) {
-               if (d.value === 'opening_hours') return; // exception
+             if (this.options.highlight) {
+               var out = this.options.highlight(_code, lang);

 
 

-               _popularKeys[d.value] = true;
-             });
-           });
-         },
-         reset: function reset() {
-           Object.values(_inflight$2).forEach(function (controller) {
-             controller.abort();
-           });
-           _inflight$2 = {};
-         },
-         keys: function keys(params, callback) {
-           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
-           params = clean(setSort(params));
-           params = Object.assign({
-             rp: 10,
-             sortname: 'count_all',
-             sortorder: 'desc',
-             page: 1,
-             lang: _mainLocalizer.languageCode()
-           }, params);
-           var url = _apibase$1 + 'keys/all?' + utilQsString(params);
-           doRequest(url, params, false, callback, function (err, d) {
-             if (err) {
-               callback(err);
-             } else {
-               var f = filterKeys(params.filter);
-               var result = d.data.filter(f).sort(sortKeys).map(valKey);
-               _taginfoCache[url] = result;
-               callback(null, result);
+               if (out != null && out !== _code) {
+                 escaped = true;
+                 _code = out;
+               }

              }
              }

-           });
-         },
-         multikeys: function multikeys(params, callback) {
-           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
-           params = clean(setSort(params));
-           params = Object.assign({
-             rp: 25,
-             sortname: 'count_all',
-             sortorder: 'desc',
-             page: 1,
-             lang: _mainLocalizer.languageCode()
-           }, params);
-           var prefix = params.query;
-           var url = _apibase$1 + 'keys/all?' + utilQsString(params);
-           doRequest(url, params, true, callback, function (err, d) {
-             if (err) {
-               callback(err);
-             } else {
-               var f = filterMultikeys(prefix);
-               var result = d.data.filter(f).map(valKey);
-               _taginfoCache[url] = result;
-               callback(null, result);
+
+             _code = _code.replace(/\n$/, '') + '\n';
+
+             if (!lang) {
+               return '<pre><code>' + (escaped ? _code : escape$2(_code, true)) + '</code></pre>\n';

              }
              }

-           });
-         },
-         values: function values(params, callback) {
-           // Exclude popular keys from values lookups.. see #3955
-           var key = params.key;

 
 

-           if (key && _popularKeys[key]) {
-             callback(null, []);
-             return;
+             return '<pre><code class="' + this.options.langPrefix + escape$2(lang, true) + '">' + (escaped ? _code : escape$2(_code, true)) + '</code></pre>\n';
+           }
+         }, {
+           key: "blockquote",
+           value: function blockquote(quote) {
+             return '<blockquote>\n' + quote + '</blockquote>\n';

            }
            }

+         }, {
+           key: "html",
+           value: function html(_html) {
+             return _html;
+           }
+         }, {
+           key: "heading",
+           value: function heading(text, level, raw, slugger) {
+             if (this.options.headerIds) {
+               return '<h' + level + ' id="' + this.options.headerPrefix + slugger.slug(raw) + '">' + text + '</h' + level + '>\n';
+             } // ignore IDs

 
 

-           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
-           params = clean(setSort(setFilter(params)));
-           params = Object.assign({
-             rp: 25,
-             sortname: 'count_all',
-             sortorder: 'desc',
-             page: 1,
-             lang: _mainLocalizer.languageCode()
-           }, params);
-           var url = _apibase$1 + 'key/values?' + utilQsString(params);
-           doRequest(url, params, false, callback, function (err, d) {
-             if (err) {
-               callback(err);
-             } else {
-               // In most cases we prefer taginfo value results with lowercase letters.
-               // A few OSM keys expect values to contain uppercase values (see #3377).
-               // This is not an exhaustive list (e.g. `name` also has uppercase values)
-               // but these are the fields where taginfo value lookup is most useful.
-               var re = /network|taxon|genus|species|brand|grape_variety|royal_cypher|listed_status|booth|rating|stars|:output|_hours|_times|_ref|manufacturer|country|target|brewery/;
-               var allowUpperCase = re.test(params.key);
-               var f = filterValues(allowUpperCase);
-               var result = d.data.filter(f).map(valKeyDescription);
-               _taginfoCache[url] = result;
-               callback(null, result);
-             }
-           });
-         },
-         roles: function roles(params, callback) {
-           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
-           var geometry = params.geometry;
-           params = clean(setSortMembers(params));
-           params = Object.assign({
-             rp: 25,
-             sortname: 'count_all_members',
-             sortorder: 'desc',
-             page: 1,
-             lang: _mainLocalizer.languageCode()
-           }, params);
-           var url = _apibase$1 + 'relation/roles?' + utilQsString(params);
-           doRequest(url, params, true, callback, function (err, d) {
-             if (err) {
-               callback(err);
-             } else {
-               var f = filterRoles(geometry);
-               var result = d.data.filter(f).map(roleKey);
-               _taginfoCache[url] = result;
-               callback(null, result);
-             }
-           });
-         },
-         docs: function docs(params, callback) {
-           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
-           params = clean(setSort(params));
-           var path = 'key/wiki_pages?';

 
 

-           if (params.value) {
-             path = 'tag/wiki_pages?';
-           } else if (params.rtype) {
-             path = 'relation/wiki_pages?';
+             return '<h' + level + '>' + text + '</h' + level + '>\n';
+           }
+         }, {
+           key: "hr",
+           value: function hr() {
+             return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
+           }
+         }, {
+           key: "list",
+           value: function list(body, ordered, start) {
+             var type = ordered ? 'ol' : 'ul',
+                 startatt = ordered && start !== 1 ? ' start="' + start + '"' : '';
+             return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
+           }
+         }, {
+           key: "listitem",
+           value: function listitem(text) {
+             return '<li>' + text + '</li>\n';
+           }
+         }, {
+           key: "checkbox",
+           value: function checkbox(checked) {
+             return '<input ' + (checked ? 'checked="" ' : '') + 'disabled="" type="checkbox"' + (this.options.xhtml ? ' /' : '') + '> ';
+           }
+         }, {
+           key: "paragraph",
+           value: function paragraph(text) {
+             return '<p>' + text + '</p>\n';
+           }
+         }, {
+           key: "table",
+           value: function table(header, body) {
+             if (body) body = '<tbody>' + body + '</tbody>';
+             return '<table>\n' + '<thead>\n' + header + '</thead>\n' + body + '</table>\n';
+           }
+         }, {
+           key: "tablerow",
+           value: function tablerow(content) {
+             return '<tr>\n' + content + '</tr>\n';

            }
            }

+         }, {
+           key: "tablecell",
+           value: function tablecell(content, flags) {
+             var type = flags.header ? 'th' : 'td';
+             var tag = flags.align ? '<' + type + ' align="' + flags.align + '">' : '<' + type + '>';
+             return tag + content + '</' + type + '>\n';
+           } // span level renderer

 
 

-           var url = _apibase$1 + path + utilQsString(params);
-           doRequest(url, params, true, callback, function (err, d) {
-             if (err) {
-               callback(err);
-             } else {
-               _taginfoCache[url] = d.data;
-               callback(null, d.data);
-             }
-           });
-         },
-         apibase: function apibase(_) {
-           if (!arguments.length) return _apibase$1;
-           _apibase$1 = _;
-           return this;
-         }
-       };
+         }, {
+           key: "strong",
+           value: function strong(text) {
+             return '<strong>' + text + '</strong>';
+           }
+         }, {
+           key: "em",
+           value: function em(text) {
+             return '<em>' + text + '</em>';
+           }
+         }, {
+           key: "codespan",
+           value: function codespan(text) {
+             return '<code>' + text + '</code>';
+           }
+         }, {
+           key: "br",
+           value: function br() {
+             return this.options.xhtml ? '<br/>' : '<br>';
+           }
+         }, {
+           key: "del",
+           value: function del(text) {
+             return '<del>' + text + '</del>';
+           }
+         }, {
+           key: "link",
+           value: function link(href, title, text) {
+             href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);

 
 

-       var helpers$1 = createCommonjsModule(function (module, exports) {
+             if (href === null) {
+               return text;
+             }

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         /**
-          * @module helpers
-          */
+             var out = '<a href="' + escape$2(href) + '"';

 
 

-         /**
-          * Earth Radius used with the Harvesine formula and approximates using a spherical (non-ellipsoid) Earth.
-          *
-          * @memberof helpers
-          * @type {number}
-          */
+             if (title) {
+               out += ' title="' + title + '"';
+             }

 
 

-         exports.earthRadius = 6371008.8;
-         /**
-          * Unit of measurement factors using a spherical (non-ellipsoid) earth radius.
-          *
-          * @memberof helpers
-          * @type {Object}
-          */
+             out += '>' + text + '</a>';
+             return out;
+           }
+         }, {
+           key: "image",
+           value: function image(href, title, text) {
+             href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);

 
 

-         exports.factors = {
-           centimeters: exports.earthRadius * 100,
-           centimetres: exports.earthRadius * 100,
-           degrees: exports.earthRadius / 111325,
-           feet: exports.earthRadius * 3.28084,
-           inches: exports.earthRadius * 39.370,
-           kilometers: exports.earthRadius / 1000,
-           kilometres: exports.earthRadius / 1000,
-           meters: exports.earthRadius,
-           metres: exports.earthRadius,
-           miles: exports.earthRadius / 1609.344,
-           millimeters: exports.earthRadius * 1000,
-           millimetres: exports.earthRadius * 1000,
-           nauticalmiles: exports.earthRadius / 1852,
-           radians: 1,
-           yards: exports.earthRadius / 1.0936
-         };
-         /**
-          * Units of measurement factors based on 1 meter.
-          *
-          * @memberof helpers
-          * @type {Object}
-          */
+             if (href === null) {
+               return text;
+             }

 
 

-         exports.unitsFactors = {
-           centimeters: 100,
-           centimetres: 100,
-           degrees: 1 / 111325,
-           feet: 3.28084,
-           inches: 39.370,
-           kilometers: 1 / 1000,
-           kilometres: 1 / 1000,
-           meters: 1,
-           metres: 1,
-           miles: 1 / 1609.344,
-           millimeters: 1000,
-           millimetres: 1000,
-           nauticalmiles: 1 / 1852,
-           radians: 1 / exports.earthRadius,
-           yards: 1 / 1.0936
-         };
-         /**
-          * Area of measurement factors based on 1 square meter.
-          *
-          * @memberof helpers
-          * @type {Object}
-          */
+             var out = '<img src="' + href + '" alt="' + text + '"';

 
 

-         exports.areaFactors = {
-           acres: 0.000247105,
-           centimeters: 10000,
-           centimetres: 10000,
-           feet: 10.763910417,
-           inches: 1550.003100006,
-           kilometers: 0.000001,
-           kilometres: 0.000001,
-           meters: 1,
-           metres: 1,
-           miles: 3.86e-7,
-           millimeters: 1000000,
-           millimetres: 1000000,
-           yards: 1.195990046
-         };
-         /**
-          * Wraps a GeoJSON {@link Geometry} in a GeoJSON {@link Feature}.
-          *
-          * @name feature
-          * @param {Geometry} geometry input geometry
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature} a GeoJSON Feature
-          * @example
-          * var geometry = {
-          *   "type": "Point",
-          *   "coordinates": [110, 50]
-          * };
-          *
-          * var feature = turf.feature(geometry);
-          *
-          * //=feature
-          */
+             if (title) {
+               out += ' title="' + title + '"';
+             }

 
 

-         function feature(geom, properties, options) {
-           if (options === void 0) {
-             options = {};
+             out += this.options.xhtml ? '/>' : '>';
+             return out;

            }
            }

+         }, {
+           key: "text",
+           value: function text(_text) {
+             return _text;
+           }
+         }]);

 
 

-           var feat = {
-             type: "Feature"
-           };
+         return Renderer;
+       }();

 
 

-           if (options.id === 0 || options.id) {
-             feat.id = options.id;
-           }
+       var TextRenderer_1 = /*#__PURE__*/function () {
+         function TextRenderer() {
+           _classCallCheck$1(this, TextRenderer);
+         }

 
 

-           if (options.bbox) {
-             feat.bbox = options.bbox;
+         _createClass$1(TextRenderer, [{
+           key: "strong",
+           value: // no need for block level renderers
+           function strong(text) {
+             return text;
+           }
+         }, {
+           key: "em",
+           value: function em(text) {
+             return text;
+           }
+         }, {
+           key: "codespan",
+           value: function codespan(text) {
+             return text;
+           }
+         }, {
+           key: "del",
+           value: function del(text) {
+             return text;
+           }
+         }, {
+           key: "html",
+           value: function html(text) {
+             return text;
+           }
+         }, {
+           key: "text",
+           value: function text(_text) {
+             return _text;

            }
            }

+         }, {
+           key: "link",
+           value: function link(href, title, text) {
+             return '' + text;
+           }
+         }, {
+           key: "image",
+           value: function image(href, title, text) {
+             return '' + text;
+           }
+         }, {
+           key: "br",
+           value: function br() {
+             return '';
+           }
+         }]);

 
 

-           feat.properties = properties || {};
-           feat.geometry = geom;
-           return feat;
-         }
+         return TextRenderer;
+       }();

 
 

-         exports.feature = feature;
-         /**
-          * Creates a GeoJSON {@link Geometry} from a Geometry string type & coordinates.
-          * For GeometryCollection type use `helpers.geometryCollection`
-          *
-          * @name geometry
-          * @param {string} type Geometry Type
-          * @param {Array<any>} coordinates Coordinates
-          * @param {Object} [options={}] Optional Parameters
-          * @returns {Geometry} a GeoJSON Geometry
-          * @example
-          * var type = "Point";
-          * var coordinates = [110, 50];
-          * var geometry = turf.geometry(type, coordinates);
-          * // => geometry
-          */
+       var Slugger_1 = /*#__PURE__*/function () {
+         function Slugger() {
+           _classCallCheck$1(this, Slugger);

 
 

-         function geometry(type, coordinates, options) {
+           this.seen = {};
+         }

 
 

-           switch (type) {
-             case "Point":
-               return point(coordinates).geometry;
+         _createClass$1(Slugger, [{
+           key: "serialize",
+           value: function serialize(value) {
+             return value.toLowerCase().trim() // remove html tags
+             .replace(/<[!\/a-z].*?>/ig, '') // remove unwanted chars
+             .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '').replace(/\s/g, '-');
+           }
+           /**
+            * Finds the next safe (unique) slug to use
+            */

 
 

-             case "LineString":
-               return lineString(coordinates).geometry;
+         }, {
+           key: "getNextSafeSlug",
+           value: function getNextSafeSlug(originalSlug, isDryRun) {
+             var slug = originalSlug;
+             var occurenceAccumulator = 0;

 
 

-             case "Polygon":
-               return polygon(coordinates).geometry;
+             if (this.seen.hasOwnProperty(slug)) {
+               occurenceAccumulator = this.seen[originalSlug];

 
 

-             case "MultiPoint":
-               return multiPoint(coordinates).geometry;
+               do {
+                 occurenceAccumulator++;
+                 slug = originalSlug + '-' + occurenceAccumulator;
+               } while (this.seen.hasOwnProperty(slug));
+             }

 
 

-             case "MultiLineString":
-               return multiLineString(coordinates).geometry;
+             if (!isDryRun) {
+               this.seen[originalSlug] = occurenceAccumulator;
+               this.seen[slug] = 0;
+             }

 
 

-             case "MultiPolygon":
-               return multiPolygon(coordinates).geometry;
+             return slug;
+           }
+           /**
+            * Convert string to unique id
+            * @param {object} options
+            * @param {boolean} options.dryrun Generates the next unique slug without updating the internal accumulator.
+            */

 
 

-             default:
-               throw new Error(type + " is invalid");
+         }, {
+           key: "slug",
+           value: function slug(value) {
+             var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+             var slug = this.serialize(value);
+             return this.getNextSafeSlug(slug, options.dryrun);

            }
            }

-         }
+         }]);

 
 

-         exports.geometry = geometry;
-         /**
-          * Creates a {@link Point} {@link Feature} from a Position.
-          *
-          * @name point
-          * @param {Array<number>} coordinates longitude, latitude position (each in decimal degrees)
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<Point>} a Point feature
-          * @example
-          * var point = turf.point([-75.343, 39.984]);
-          *
-          * //=point
-          */
+         return Slugger;
+       }();

 
 

-         function point(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+       var Renderer$1 = Renderer_1;
+       var TextRenderer$1 = TextRenderer_1;
+       var Slugger$1 = Slugger_1;
+       var defaults$1 = defaults$5.exports.defaults;
+       var unescape$1 = helpers.unescape;
+       /**
+        * Parsing & Compiling
+        */

 
 

-           var geom = {
-             type: "Point",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+       var Parser_1 = /*#__PURE__*/function () {
+         function Parser(options) {
+           _classCallCheck$1(this, Parser);

 
 

-         exports.point = point;
+           this.options = options || defaults$1;
+           this.options.renderer = this.options.renderer || new Renderer$1();
+           this.renderer = this.options.renderer;
+           this.renderer.options = this.options;
+           this.textRenderer = new TextRenderer$1();
+           this.slugger = new Slugger$1();
+         }

          /**
          /**

-          * Creates a {@link Point} {@link FeatureCollection} from an Array of Point coordinates.
-          *
-          * @name points
-          * @param {Array<Array<number>>} coordinates an array of Points
-          * @param {Object} [properties={}] Translate these properties to each Feature
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north]
-          * associated with the FeatureCollection
-          * @param {string|number} [options.id] Identifier associated with the FeatureCollection
-          * @returns {FeatureCollection<Point>} Point Feature
-          * @example
-          * var points = turf.points([
-          *   [-75, 39],
-          *   [-80, 45],
-          *   [-78, 50]
-          * ]);
-          *
-          * //=points
+          * Static Parse Method

           */
 
           */
 

-         function points(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }

 
 

-           return featureCollection(coordinates.map(function (coords) {
-             return point(coords, properties);
-           }), options);
-         }
+         _createClass$1(Parser, [{
+           key: "parse",
+           value:
+           /**
+            * Parse Loop
+            */
+           function parse(tokens) {
+             var top = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
+             var out = '',
+                 i,
+                 j,
+                 k,
+                 l2,
+                 l3,
+                 row,
+                 cell,
+                 header,
+                 body,
+                 token,
+                 ordered,
+                 start,
+                 loose,
+                 itemBody,
+                 item,
+                 checked,
+                 task,
+                 checkbox;
+             var l = tokens.length;

 
 

-         exports.points = points;
-         /**
-          * Creates a {@link Polygon} {@link Feature} from an Array of LinearRings.
-          *
-          * @name polygon
-          * @param {Array<Array<Array<number>>>} coordinates an array of LinearRings
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<Polygon>} Polygon Feature
-          * @example
-          * var polygon = turf.polygon([[[-5, 52], [-4, 56], [-2, 51], [-7, 54], [-5, 52]]], { name: 'poly1' });
-          *
-          * //=polygon
-          */
+             for (i = 0; i < l; i++) {
+               token = tokens[i];

 
 

-         function polygon(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+               switch (token.type) {
+                 case 'space':
+                   {
+                     continue;
+                   }
+
+                 case 'hr':
+                   {
+                     out += this.renderer.hr();
+                     continue;
+                   }
+
+                 case 'heading':
+                   {
+                     out += this.renderer.heading(this.parseInline(token.tokens), token.depth, unescape$1(this.parseInline(token.tokens, this.textRenderer)), this.slugger);
+                     continue;
+                   }

 
 

-           for (var _i = 0, coordinates_1 = coordinates; _i < coordinates_1.length; _i++) {
-             var ring = coordinates_1[_i];
+                 case 'code':
+                   {
+                     out += this.renderer.code(token.text, token.lang, token.escaped);
+                     continue;
+                   }

 
 

-             if (ring.length < 4) {
-               throw new Error("Each LinearRing of a Polygon must have 4 or more Positions.");
-             }
+                 case 'table':
+                   {
+                     header = ''; // header

 
 

-             for (var j = 0; j < ring[ring.length - 1].length; j++) {
-               // Check if first point of Polygon contains two numbers
-               if (ring[ring.length - 1][j] !== ring[0][j]) {
-                 throw new Error("First and last Position are not equivalent.");
-               }
-             }
-           }
+                     cell = '';
+                     l2 = token.header.length;

 
 

-           var geom = {
-             type: "Polygon",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+                     for (j = 0; j < l2; j++) {
+                       cell += this.renderer.tablecell(this.parseInline(token.tokens.header[j]), {
+                         header: true,
+                         align: token.align[j]
+                       });
+                     }

 
 

-         exports.polygon = polygon;
-         /**
-          * Creates a {@link Polygon} {@link FeatureCollection} from an Array of Polygon coordinates.
-          *
-          * @name polygons
-          * @param {Array<Array<Array<Array<number>>>>} coordinates an array of Polygon coordinates
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the FeatureCollection
-          * @returns {FeatureCollection<Polygon>} Polygon FeatureCollection
-          * @example
-          * var polygons = turf.polygons([
-          *   [[[-5, 52], [-4, 56], [-2, 51], [-7, 54], [-5, 52]]],
-          *   [[[-15, 42], [-14, 46], [-12, 41], [-17, 44], [-15, 42]]],
-          * ]);
-          *
-          * //=polygons
-          */
+                     header += this.renderer.tablerow(cell);
+                     body = '';
+                     l2 = token.cells.length;

 
 

-         function polygons(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                     for (j = 0; j < l2; j++) {
+                       row = token.tokens.cells[j];
+                       cell = '';
+                       l3 = row.length;

 
 

-           return featureCollection(coordinates.map(function (coords) {
-             return polygon(coords, properties);
-           }), options);
-         }
+                       for (k = 0; k < l3; k++) {
+                         cell += this.renderer.tablecell(this.parseInline(row[k]), {
+                           header: false,
+                           align: token.align[k]
+                         });
+                       }

 
 

-         exports.polygons = polygons;
-         /**
-          * Creates a {@link LineString} {@link Feature} from an Array of Positions.
-          *
-          * @name lineString
-          * @param {Array<Array<number>>} coordinates an array of Positions
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<LineString>} LineString Feature
-          * @example
-          * var linestring1 = turf.lineString([[-24, 63], [-23, 60], [-25, 65], [-20, 69]], {name: 'line 1'});
-          * var linestring2 = turf.lineString([[-14, 43], [-13, 40], [-15, 45], [-10, 49]], {name: 'line 2'});
-          *
-          * //=linestring1
-          * //=linestring2
-          */
+                       body += this.renderer.tablerow(cell);
+                     }

 
 

-         function lineString(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                     out += this.renderer.table(header, body);
+                     continue;
+                   }

 
 

-           if (coordinates.length < 2) {
-             throw new Error("coordinates must be an array of two or more positions");
-           }
+                 case 'blockquote':
+                   {
+                     body = this.parse(token.tokens);
+                     out += this.renderer.blockquote(body);
+                     continue;
+                   }

 
 

-           var geom = {
-             type: "LineString",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+                 case 'list':
+                   {
+                     ordered = token.ordered;
+                     start = token.start;
+                     loose = token.loose;
+                     l2 = token.items.length;
+                     body = '';

 
 

-         exports.lineString = lineString;
-         /**
-          * Creates a {@link LineString} {@link FeatureCollection} from an Array of LineString coordinates.
-          *
-          * @name lineStrings
-          * @param {Array<Array<Array<number>>>} coordinates an array of LinearRings
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north]
-          * associated with the FeatureCollection
-          * @param {string|number} [options.id] Identifier associated with the FeatureCollection
-          * @returns {FeatureCollection<LineString>} LineString FeatureCollection
-          * @example
-          * var linestrings = turf.lineStrings([
-          *   [[-24, 63], [-23, 60], [-25, 65], [-20, 69]],
-          *   [[-14, 43], [-13, 40], [-15, 45], [-10, 49]]
-          * ]);
-          *
-          * //=linestrings
-          */
+                     for (j = 0; j < l2; j++) {
+                       item = token.items[j];
+                       checked = item.checked;
+                       task = item.task;
+                       itemBody = '';

 
 

-         function lineStrings(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                       if (item.task) {
+                         checkbox = this.renderer.checkbox(checked);

 
 

-           return featureCollection(coordinates.map(function (coords) {
-             return lineString(coords, properties);
-           }), options);
-         }
+                         if (loose) {
+                           if (item.tokens.length > 0 && item.tokens[0].type === 'text') {
+                             item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;

 
 

-         exports.lineStrings = lineStrings;
-         /**
-          * Takes one or more {@link Feature|Features} and creates a {@link FeatureCollection}.
-          *
-          * @name featureCollection
-          * @param {Feature[]} features input features
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {FeatureCollection} FeatureCollection of Features
-          * @example
-          * var locationA = turf.point([-75.343, 39.984], {name: 'Location A'});
-          * var locationB = turf.point([-75.833, 39.284], {name: 'Location B'});
-          * var locationC = turf.point([-75.534, 39.123], {name: 'Location C'});
-          *
-          * var collection = turf.featureCollection([
-          *   locationA,
-          *   locationB,
-          *   locationC
-          * ]);
-          *
-          * //=collection
-          */
+                             if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {
+                               item.tokens[0].tokens[0].text = checkbox + ' ' + item.tokens[0].tokens[0].text;
+                             }
+                           } else {
+                             item.tokens.unshift({
+                               type: 'text',
+                               text: checkbox
+                             });
+                           }
+                         } else {
+                           itemBody += checkbox;
+                         }
+                       }

 
 

-         function featureCollection(features, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                       itemBody += this.parse(item.tokens, loose);
+                       body += this.renderer.listitem(itemBody, task, checked);
+                     }

 
 

-           var fc = {
-             type: "FeatureCollection"
-           };
+                     out += this.renderer.list(body, ordered, start);
+                     continue;
+                   }

 
 

-           if (options.id) {
-             fc.id = options.id;
-           }
+                 case 'html':
+                   {
+                     // TODO parse inline content if parameter markdown=1
+                     out += this.renderer.html(token.text);
+                     continue;
+                   }

 
 

-           if (options.bbox) {
-             fc.bbox = options.bbox;
-           }
+                 case 'paragraph':
+                   {
+                     out += this.renderer.paragraph(this.parseInline(token.tokens));
+                     continue;
+                   }

 
 

-           fc.features = features;
-           return fc;
-         }
+                 case 'text':
+                   {
+                     body = token.tokens ? this.parseInline(token.tokens) : token.text;

 
 

-         exports.featureCollection = featureCollection;
-         /**
-          * Creates a {@link Feature<MultiLineString>} based on a
-          * coordinate array. Properties can be added optionally.
-          *
-          * @name multiLineString
-          * @param {Array<Array<Array<number>>>} coordinates an array of LineStrings
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<MultiLineString>} a MultiLineString feature
-          * @throws {Error} if no coordinates are passed
-          * @example
-          * var multiLine = turf.multiLineString([[[0,0],[10,10]]]);
-          *
-          * //=multiLine
-          */
+                     while (i + 1 < l && tokens[i + 1].type === 'text') {
+                       token = tokens[++i];
+                       body += '\n' + (token.tokens ? this.parseInline(token.tokens) : token.text);
+                     }

 
 

-         function multiLineString(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                     out += top ? this.renderer.paragraph(body) : body;
+                     continue;
+                   }

 
 

-           var geom = {
-             type: "MultiLineString",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+                 default:
+                   {
+                     var errMsg = 'Token with "' + token.type + '" type was not found.';

 
 

-         exports.multiLineString = multiLineString;
-         /**
-          * Creates a {@link Feature<MultiPoint>} based on a
-          * coordinate array. Properties can be added optionally.
-          *
-          * @name multiPoint
-          * @param {Array<Array<number>>} coordinates an array of Positions
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<MultiPoint>} a MultiPoint feature
-          * @throws {Error} if no coordinates are passed
-          * @example
-          * var multiPt = turf.multiPoint([[0,0],[10,10]]);
-          *
-          * //=multiPt
-          */
+                     if (this.options.silent) {
+                       console.error(errMsg);
+                       return;
+                     } else {
+                       throw new Error(errMsg);
+                     }
+                   }
+               }
+             }

 
 

-         function multiPoint(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
+             return out;

            }
            }

+           /**
+            * Parse Inline Tokens
+            */

 
 

-           var geom = {
-             type: "MultiPoint",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+         }, {
+           key: "parseInline",
+           value: function parseInline(tokens, renderer) {
+             renderer = renderer || this.renderer;
+             var out = '',
+                 i,
+                 token;
+             var l = tokens.length;

 
 

-         exports.multiPoint = multiPoint;
-         /**
-          * Creates a {@link Feature<MultiPolygon>} based on a
-          * coordinate array. Properties can be added optionally.
-          *
-          * @name multiPolygon
-          * @param {Array<Array<Array<Array<number>>>>} coordinates an array of Polygons
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<MultiPolygon>} a multipolygon feature
-          * @throws {Error} if no coordinates are passed
-          * @example
-          * var multiPoly = turf.multiPolygon([[[[0,0],[0,10],[10,10],[10,0],[0,0]]]]);
-          *
-          * //=multiPoly
-          *
-          */
+             for (i = 0; i < l; i++) {
+               token = tokens[i];

 
 

-         function multiPolygon(coordinates, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+               switch (token.type) {
+                 case 'escape':
+                   {
+                     out += renderer.text(token.text);
+                     break;
+                   }

 
 

-           var geom = {
-             type: "MultiPolygon",
-             coordinates: coordinates
-           };
-           return feature(geom, properties, options);
-         }
+                 case 'html':
+                   {
+                     out += renderer.html(token.text);
+                     break;
+                   }

 
 

-         exports.multiPolygon = multiPolygon;
-         /**
-          * Creates a {@link Feature<GeometryCollection>} based on a
-          * coordinate array. Properties can be added optionally.
-          *
-          * @name geometryCollection
-          * @param {Array<Geometry>} geometries an array of GeoJSON Geometries
-          * @param {Object} [properties={}] an Object of key-value pairs to add as properties
-          * @param {Object} [options={}] Optional Parameters
-          * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
-          * @param {string|number} [options.id] Identifier associated with the Feature
-          * @returns {Feature<GeometryCollection>} a GeoJSON GeometryCollection Feature
-          * @example
-          * var pt = turf.geometry("Point", [100, 0]);
-          * var line = turf.geometry("LineString", [[101, 0], [102, 1]]);
-          * var collection = turf.geometryCollection([pt, line]);
-          *
-          * // => collection
-          */
+                 case 'link':
+                   {
+                     out += renderer.link(token.href, token.title, this.parseInline(token.tokens, renderer));
+                     break;
+                   }

 
 

-         function geometryCollection(geometries, properties, options) {
-           if (options === void 0) {
-             options = {};
-           }
+                 case 'image':
+                   {
+                     out += renderer.image(token.href, token.title, token.text);
+                     break;
+                   }

 
 

-           var geom = {
-             type: "GeometryCollection",
-             geometries: geometries
-           };
-           return feature(geom, properties, options);
-         }
+                 case 'strong':
+                   {
+                     out += renderer.strong(this.parseInline(token.tokens, renderer));
+                     break;
+                   }

 
 

-         exports.geometryCollection = geometryCollection;
-         /**
-          * Round number to precision
-          *
-          * @param {number} num Number
-          * @param {number} [precision=0] Precision
-          * @returns {number} rounded number
-          * @example
-          * turf.round(120.4321)
-          * //=120
-          *
-          * turf.round(120.4321, 2)
-          * //=120.43
-          */
+                 case 'em':
+                   {
+                     out += renderer.em(this.parseInline(token.tokens, renderer));
+                     break;
+                   }

 
 

-         function round(num, precision) {
-           if (precision === void 0) {
-             precision = 0;
-           }
+                 case 'codespan':
+                   {
+                     out += renderer.codespan(token.text);
+                     break;
+                   }

 
 

-           if (precision && !(precision >= 0)) {
-             throw new Error("precision must be a positive number");
-           }
+                 case 'br':
+                   {
+                     out += renderer.br();
+                     break;
+                   }

 
 

-           var multiplier = Math.pow(10, precision || 0);
-           return Math.round(num * multiplier) / multiplier;
-         }
+                 case 'del':
+                   {
+                     out += renderer.del(this.parseInline(token.tokens, renderer));
+                     break;
+                   }

 
 

-         exports.round = round;
-         /**
-          * Convert a distance measurement (assuming a spherical Earth) from radians to a more friendly unit.
-          * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet
-          *
-          * @name radiansToLength
-          * @param {number} radians in radians across the sphere
-          * @param {string} [units="kilometers"] can be degrees, radians, miles, or kilometers inches, yards, metres,
-          * meters, kilometres, kilometers.
-          * @returns {number} distance
-          */
+                 case 'text':
+                   {
+                     out += renderer.text(token.text);
+                     break;
+                   }

 
 

-         function radiansToLength(radians, units) {
-           if (units === void 0) {
-             units = "kilometers";
-           }
+                 default:
+                   {
+                     var errMsg = 'Token with "' + token.type + '" type was not found.';

 
 

-           var factor = exports.factors[units];
+                     if (this.options.silent) {
+                       console.error(errMsg);
+                       return;
+                     } else {
+                       throw new Error(errMsg);
+                     }
+                   }
+               }
+             }

 
 

-           if (!factor) {
-             throw new Error(units + " units is invalid");
+             return out;

            }
            }

+         }], [{
+           key: "parse",
+           value: function parse(tokens, options) {
+             var parser = new Parser(options);
+             return parser.parse(tokens);
+           }
+           /**
+            * Static Parse Inline Method
+            */

 
 

-           return radians * factor;
-         }
-
-         exports.radiansToLength = radiansToLength;
-         /**
-          * Convert a distance measurement (assuming a spherical Earth) from a real-world unit into radians
-          * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet
-          *
-          * @name lengthToRadians
-          * @param {number} distance in real units
-          * @param {string} [units="kilometers"] can be degrees, radians, miles, or kilometers inches, yards, metres,
-          * meters, kilometres, kilometers.
-          * @returns {number} radians
-          */
-
-         function lengthToRadians(distance, units) {
-           if (units === void 0) {
-             units = "kilometers";
+         }, {
+           key: "parseInline",
+           value: function parseInline(tokens, options) {
+             var parser = new Parser(options);
+             return parser.parseInline(tokens);

            }
            }

+         }]);

 
 

-           var factor = exports.factors[units];
+         return Parser;
+       }();

 
 

-           if (!factor) {
-             throw new Error(units + " units is invalid");
-           }
+       var Lexer = Lexer_1;
+       var Parser = Parser_1;
+       var Tokenizer = Tokenizer_1;
+       var Renderer = Renderer_1;
+       var TextRenderer = TextRenderer_1;
+       var Slugger = Slugger_1;
+       var merge = helpers.merge,
+           checkSanitizeDeprecation = helpers.checkSanitizeDeprecation,
+           escape$1 = helpers.escape;
+       var getDefaults = defaults$5.exports.getDefaults,
+           changeDefaults = defaults$5.exports.changeDefaults,
+           defaults = defaults$5.exports.defaults;
+       /**
+        * Marked
+        */

 
 

-           return distance / factor;
+       function marked(src, opt, callback) {
+         // throw error in case of non string input
+         if (typeof src === 'undefined' || src === null) {
+           throw new Error('marked(): input parameter is undefined or null');

          }
 
          }
 

-         exports.lengthToRadians = lengthToRadians;
-         /**
-          * Convert a distance measurement (assuming a spherical Earth) from a real-world unit into degrees
-          * Valid units: miles, nauticalmiles, inches, yards, meters, metres, centimeters, kilometres, feet
-          *
-          * @name lengthToDegrees
-          * @param {number} distance in real units
-          * @param {string} [units="kilometers"] can be degrees, radians, miles, or kilometers inches, yards, metres,
-          * meters, kilometres, kilometers.
-          * @returns {number} degrees
-          */
+         if (typeof src !== 'string') {
+           throw new Error('marked(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected');
+         }

 
 

-         function lengthToDegrees(distance, units) {
-           return radiansToDegrees(lengthToRadians(distance, units));
+         if (typeof opt === 'function') {
+           callback = opt;
+           opt = null;

          }
 
          }
 

-         exports.lengthToDegrees = lengthToDegrees;
-         /**
-          * Converts any bearing angle from the north line direction (positive clockwise)
-          * and returns an angle between 0-360 degrees (positive clockwise), 0 being the north line
-          *
-          * @name bearingToAzimuth
-          * @param {number} bearing angle, between -180 and +180 degrees
-          * @returns {number} angle between 0 and 360 degrees
-          */
+         opt = merge({}, marked.defaults, opt || {});
+         checkSanitizeDeprecation(opt);

 
 

-         function bearingToAzimuth(bearing) {
-           var angle = bearing % 360;
+         if (callback) {
+           var highlight = opt.highlight;
+           var tokens;

 
 

-           if (angle < 0) {
-             angle += 360;
+           try {
+             tokens = Lexer.lex(src, opt);
+           } catch (e) {
+             return callback(e);

            }
 
            }
 

-           return angle;
-         }
-
-         exports.bearingToAzimuth = bearingToAzimuth;
-         /**
-          * Converts an angle in radians to degrees
-          *
-          * @name radiansToDegrees
-          * @param {number} radians angle in radians
-          * @returns {number} degrees between 0 and 360 degrees
-          */
-
-         function radiansToDegrees(radians) {
-           var degrees = radians % (2 * Math.PI);
-           return degrees * 180 / Math.PI;
-         }
-
-         exports.radiansToDegrees = radiansToDegrees;
-         /**
-          * Converts an angle in degrees to radians
-          *
-          * @name degreesToRadians
-          * @param {number} degrees angle between 0 and 360 degrees
-          * @returns {number} angle in radians
-          */
+           var done = function done(err) {
+             var out;

 
 

-         function degreesToRadians(degrees) {
-           var radians = degrees % 360;
-           return radians * Math.PI / 180;
-         }
+             if (!err) {
+               try {
+                 if (opt.walkTokens) {
+                   marked.walkTokens(tokens, opt.walkTokens);
+                 }

 
 

-         exports.degreesToRadians = degreesToRadians;
-         /**
-          * Converts a length to the requested unit.
-          * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet
-          *
-          * @param {number} length to be converted
-          * @param {Units} [originalUnit="kilometers"] of the length
-          * @param {Units} [finalUnit="kilometers"] returned unit
-          * @returns {number} the converted length
-          */
+                 out = Parser.parse(tokens, opt);
+               } catch (e) {
+                 err = e;
+               }
+             }

 
 

-         function convertLength(length, originalUnit, finalUnit) {
-           if (originalUnit === void 0) {
-             originalUnit = "kilometers";
-           }
+             opt.highlight = highlight;
+             return err ? callback(err) : callback(null, out);
+           };

 
 

-           if (finalUnit === void 0) {
-             finalUnit = "kilometers";
+           if (!highlight || highlight.length < 3) {
+             return done();

            }
 
            }
 

-           if (!(length >= 0)) {
-             throw new Error("length must be a positive number");
-           }
+           delete opt.highlight;
+           if (!tokens.length) return done();
+           var pending = 0;
+           marked.walkTokens(tokens, function (token) {
+             if (token.type === 'code') {
+               pending++;
+               setTimeout(function () {
+                 highlight(token.text, token.lang, function (err, code) {
+                   if (err) {
+                     return done(err);
+                   }

 
 

-           return radiansToLength(lengthToRadians(length, originalUnit), finalUnit);
-         }
+                   if (code != null && code !== token.text) {
+                     token.text = code;
+                     token.escaped = true;
+                   }

 
 

-         exports.convertLength = convertLength;
-         /**
-          * Converts a area to the requested unit.
-          * Valid units: kilometers, kilometres, meters, metres, centimetres, millimeters, acres, miles, yards, feet, inches
-          * @param {number} area to be converted
-          * @param {Units} [originalUnit="meters"] of the distance
-          * @param {Units} [finalUnit="kilometers"] returned unit
-          * @returns {number} the converted distance
-          */
+                   pending--;

 
 

-         function convertArea(area, originalUnit, finalUnit) {
-           if (originalUnit === void 0) {
-             originalUnit = "meters";
-           }
+                   if (pending === 0) {
+                     done();
+                   }
+                 });
+               }, 0);
+             }
+           });

 
 

-           if (finalUnit === void 0) {
-             finalUnit = "kilometers";
+           if (pending === 0) {
+             done();

            }
 
            }
 

-           if (!(area >= 0)) {
-             throw new Error("area must be a positive number");
-           }
+           return;
+         }

 
 

-           var startFactor = exports.areaFactors[originalUnit];
+         try {
+           var _tokens = Lexer.lex(src, opt);

 
 

-           if (!startFactor) {
-             throw new Error("invalid original units");
+           if (opt.walkTokens) {
+             marked.walkTokens(_tokens, opt.walkTokens);

            }
 
            }
 

-           var finalFactor = exports.areaFactors[finalUnit];
+           return Parser.parse(_tokens, opt);
+         } catch (e) {
+           e.message += '\nPlease report this to https://github.com/markedjs/marked.';

 
 

-           if (!finalFactor) {
-             throw new Error("invalid final units");
+           if (opt.silent) {
+             return '<p>An error occurred:</p><pre>' + escape$1(e.message + '', true) + '</pre>';

            }
 
            }
 

-           return area / startFactor * finalFactor;
+           throw e;

          }
          }

+       }
+       /**
+        * Options
+        */

 
 

-         exports.convertArea = convertArea;
-         /**
-          * isNumber
-          *
-          * @param {*} num Number to validate
-          * @returns {boolean} true/false
-          * @example
-          * turf.isNumber(123)
-          * //=true
-          * turf.isNumber('foo')
-          * //=false
-          */

 
 

-         function isNumber(num) {
-           return !isNaN(num) && num !== null && !Array.isArray(num) && !/^\s*$/.test(num);
-         }
+       marked.options = marked.setOptions = function (opt) {
+         merge(marked.defaults, opt);
+         changeDefaults(marked.defaults);
+         return marked;
+       };

 
 

-         exports.isNumber = isNumber;
-         /**
-          * isObject
-          *
-          * @param {*} input variable to validate
-          * @returns {boolean} true/false
-          * @example
-          * turf.isObject({elevation: 10})
-          * //=true
-          * turf.isObject('foo')
-          * //=false
-          */
+       marked.getDefaults = getDefaults;
+       marked.defaults = defaults;
+       /**
+        * Use Extension
+        */

 
 

-         function isObject(input) {
-           return !!input && input.constructor === Object;
-         }
+       marked.use = function (extension) {
+         var opts = merge({}, extension);

 
 

-         exports.isObject = isObject;
-         /**
-          * Validate BBox
-          *
-          * @private
-          * @param {Array<number>} bbox BBox to validate
-          * @returns {void}
-          * @throws Error if BBox is not valid
-          * @example
-          * validateBBox([-180, -40, 110, 50])
-          * //=OK
-          * validateBBox([-180, -40])
-          * //=Error
-          * validateBBox('Foo')
-          * //=Error
-          * validateBBox(5)
-          * //=Error
-          * validateBBox(null)
-          * //=Error
-          * validateBBox(undefined)
-          * //=Error
-          */
+         if (extension.renderer) {
+           (function () {
+             var renderer = marked.defaults.renderer || new Renderer();

 
 

-         function validateBBox(bbox) {
-           if (!bbox) {
-             throw new Error("bbox is required");
-           }
+             var _loop = function _loop(prop) {
+               var prevRenderer = renderer[prop];

 
 

-           if (!Array.isArray(bbox)) {
-             throw new Error("bbox must be an Array");
-           }
+               renderer[prop] = function () {
+                 for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+                   args[_key] = arguments[_key];
+                 }

 
 

-           if (bbox.length !== 4 && bbox.length !== 6) {
-             throw new Error("bbox must be an Array of 4 or 6 numbers");
-           }
+                 var ret = extension.renderer[prop].apply(renderer, args);

 
 

-           bbox.forEach(function (num) {
-             if (!isNumber(num)) {
-               throw new Error("bbox must only contain numbers");
-             }
-           });
-         }
+                 if (ret === false) {
+                   ret = prevRenderer.apply(renderer, args);
+                 }

 
 

-         exports.validateBBox = validateBBox;
-         /**
-          * Validate Id
-          *
-          * @private
-          * @param {string|number} id Id to validate
-          * @returns {void}
-          * @throws Error if Id is not valid
-          * @example
-          * validateId([-180, -40, 110, 50])
-          * //=Error
-          * validateId([-180, -40])
-          * //=Error
-          * validateId('Foo')
-          * //=OK
-          * validateId(5)
-          * //=OK
-          * validateId(null)
-          * //=Error
-          * validateId(undefined)
-          * //=Error
-          */
+                 return ret;
+               };
+             };

 
 

-         function validateId(id) {
-           if (!id) {
-             throw new Error("id is required");
-           }
+             for (var prop in extension.renderer) {
+               _loop(prop);
+             }

 
 

-           if (["string", "number"].indexOf(_typeof(id)) === -1) {
-             throw new Error("id must be a number or a string");
-           }
+             opts.renderer = renderer;
+           })();

          }
 
          }
 

-         exports.validateId = validateId; // Deprecated methods
+         if (extension.tokenizer) {
+           (function () {
+             var tokenizer = marked.defaults.tokenizer || new Tokenizer();
+
+             var _loop2 = function _loop2(prop) {
+               var prevTokenizer = tokenizer[prop];

 
 

-         function radians2degrees() {
-           throw new Error("method has been renamed to `radiansToDegrees`");
-         }
+               tokenizer[prop] = function () {
+                 for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+                   args[_key2] = arguments[_key2];
+                 }

 
 

-         exports.radians2degrees = radians2degrees;
+                 var ret = extension.tokenizer[prop].apply(tokenizer, args);

 
 

-         function degrees2radians() {
-           throw new Error("method has been renamed to `degreesToRadians`");
-         }
+                 if (ret === false) {
+                   ret = prevTokenizer.apply(tokenizer, args);
+                 }
+
+                 return ret;
+               };
+             };

 
 

-         exports.degrees2radians = degrees2radians;
+             for (var prop in extension.tokenizer) {
+               _loop2(prop);
+             }

 
 

-         function distanceToDegrees() {
-           throw new Error("method has been renamed to `lengthToDegrees`");
+             opts.tokenizer = tokenizer;
+           })();

          }
 
          }
 

-         exports.distanceToDegrees = distanceToDegrees;
+         if (extension.walkTokens) {
+           var walkTokens = marked.defaults.walkTokens;
+
+           opts.walkTokens = function (token) {
+             extension.walkTokens(token);

 
 

-         function distanceToRadians() {
-           throw new Error("method has been renamed to `lengthToRadians`");
+             if (walkTokens) {
+               walkTokens(token);
+             }
+           };

          }
 
          }
 

-         exports.distanceToRadians = distanceToRadians;
+         marked.setOptions(opts);
+       };
+       /**
+        * Run callback for every token
+        */

 
 

-         function radiansToDistance() {
-           throw new Error("method has been renamed to `radiansToLength`");
-         }

 
 

-         exports.radiansToDistance = radiansToDistance;
+       marked.walkTokens = function (tokens, callback) {
+         var _iterator = _createForOfIteratorHelper(tokens),
+             _step;
+
+         try {
+           for (_iterator.s(); !(_step = _iterator.n()).done;) {
+             var token = _step.value;
+             callback(token);

 
 

-         function bearingToAngle() {
-           throw new Error("method has been renamed to `bearingToAzimuth`");
-         }
+             switch (token.type) {
+               case 'table':
+                 {
+                   var _iterator2 = _createForOfIteratorHelper(token.tokens.header),
+                       _step2;

 
 

-         exports.bearingToAngle = bearingToAngle;
+                   try {
+                     for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
+                       var cell = _step2.value;
+                       marked.walkTokens(cell, callback);
+                     }
+                   } catch (err) {
+                     _iterator2.e(err);
+                   } finally {
+                     _iterator2.f();
+                   }

 
 

-         function convertDistance() {
-           throw new Error("method has been renamed to `convertLength`");
-         }
+                   var _iterator3 = _createForOfIteratorHelper(token.tokens.cells),
+                       _step3;

 
 

-         exports.convertDistance = convertDistance;
-       });
+                   try {
+                     for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
+                       var row = _step3.value;

 
 

-       var invariant = createCommonjsModule(function (module, exports) {
+                       var _iterator4 = _createForOfIteratorHelper(row),
+                           _step4;

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
-         /**
-          * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.
-          *
-          * @name getCoord
-          * @param {Array<number>|Geometry<Point>|Feature<Point>} coord GeoJSON Point or an Array of numbers
-          * @returns {Array<number>} coordinates
-          * @example
-          * var pt = turf.point([10, 10]);
-          *
-          * var coord = turf.getCoord(pt);
-          * //= [10, 10]
-          */
+                       try {
+                         for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
+                           var _cell = _step4.value;
+                           marked.walkTokens(_cell, callback);
+                         }
+                       } catch (err) {
+                         _iterator4.e(err);
+                       } finally {
+                         _iterator4.f();
+                       }
+                     }
+                   } catch (err) {
+                     _iterator3.e(err);
+                   } finally {
+                     _iterator3.f();
+                   }

 
 

-         function getCoord(coord) {
-           if (!coord) {
-             throw new Error("coord is required");
-           }
+                   break;
+                 }

 
 

-           if (!Array.isArray(coord)) {
-             if (coord.type === "Feature" && coord.geometry !== null && coord.geometry.type === "Point") {
-               return coord.geometry.coordinates;
-             }
+               case 'list':
+                 {
+                   marked.walkTokens(token.items, callback);
+                   break;
+                 }

 
 

-             if (coord.type === "Point") {
-               return coord.coordinates;
+               default:
+                 {
+                   if (token.tokens) {
+                     marked.walkTokens(token.tokens, callback);
+                   }
+                 }

              }
            }
              }
            }

-
-           if (Array.isArray(coord) && coord.length >= 2 && !Array.isArray(coord[0]) && !Array.isArray(coord[1])) {
-             return coord;
-           }
-
-           throw new Error("coord must be GeoJSON Point or an Array of numbers");
+         } catch (err) {
+           _iterator.e(err);
+         } finally {
+           _iterator.f();

          }
          }

-
-         exports.getCoord = getCoord;
-         /**
-          * Unwrap coordinates from a Feature, Geometry Object or an Array
-          *
-          * @name getCoords
-          * @param {Array<any>|Geometry|Feature} coords Feature, Geometry Object or an Array
-          * @returns {Array<any>} coordinates
-          * @example
-          * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);
-          *
-          * var coords = turf.getCoords(poly);
-          * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]
-          */
-
-         function getCoords(coords) {
-           if (Array.isArray(coords)) {
-             return coords;
-           } // Feature
+       };
+       /**
+        * Parse Inline
+        */

 
 
 
 

-           if (coords.type === "Feature") {
-             if (coords.geometry !== null) {
-               return coords.geometry.coordinates;
-             }
-           } else {
-             // Geometry
-             if (coords.coordinates) {
-               return coords.coordinates;
-             }
-           }
+       marked.parseInline = function (src, opt) {
+         // throw error in case of non string input
+         if (typeof src === 'undefined' || src === null) {
+           throw new Error('marked.parseInline(): input parameter is undefined or null');
+         }

 
 

-           throw new Error("coords must be GeoJSON Feature, Geometry Object or an Array");
+         if (typeof src !== 'string') {
+           throw new Error('marked.parseInline(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected');

          }
 
          }
 

-         exports.getCoords = getCoords;
-         /**
-          * Checks if coordinates contains a number
-          *
-          * @name containsNumber
-          * @param {Array<any>} coordinates GeoJSON Coordinates
-          * @returns {boolean} true if Array contains a number
-          */
+         opt = merge({}, marked.defaults, opt || {});
+         checkSanitizeDeprecation(opt);

 
 

-         function containsNumber(coordinates) {
-           if (coordinates.length > 1 && helpers$1.isNumber(coordinates[0]) && helpers$1.isNumber(coordinates[1])) {
-             return true;
-           }
+         try {
+           var tokens = Lexer.lexInline(src, opt);

 
 

-           if (Array.isArray(coordinates[0]) && coordinates[0].length) {
-             return containsNumber(coordinates[0]);
+           if (opt.walkTokens) {
+             marked.walkTokens(tokens, opt.walkTokens);

            }
 
            }
 

-           throw new Error("coordinates must only contain numbers");
-         }
-
-         exports.containsNumber = containsNumber;
-         /**
-          * Enforce expectations about types of GeoJSON objects for Turf.
-          *
-          * @name geojsonType
-          * @param {GeoJSON} value any GeoJSON object
-          * @param {string} type expected GeoJSON type
-          * @param {string} name name of calling function
-          * @throws {Error} if value is not the expected type.
-          */
+           return Parser.parseInline(tokens, opt);
+         } catch (e) {
+           e.message += '\nPlease report this to https://github.com/markedjs/marked.';

 
 

-         function geojsonType(value, type, name) {
-           if (!type || !name) {
-             throw new Error("type and name required");
+           if (opt.silent) {
+             return '<p>An error occurred:</p><pre>' + escape$1(e.message + '', true) + '</pre>';

            }
 
            }
 

-           if (!value || value.type !== type) {
-             throw new Error("Invalid input to " + name + ": must be a " + type + ", given " + value.type);
-           }
+           throw e;

          }
          }

+       };
+       /**
+        * Expose
+        */

 
 

-         exports.geojsonType = geojsonType;
-         /**
-          * Enforce expectations about types of {@link Feature} inputs for Turf.
-          * Internally this uses {@link geojsonType} to judge geometry types.
-          *
-          * @name featureOf
-          * @param {Feature} feature a feature with an expected geometry type
-          * @param {string} type expected GeoJSON type
-          * @param {string} name name of calling function
-          * @throws {Error} error if value is not the expected type.
-          */

 
 

-         function featureOf(feature, type, name) {
-           if (!feature) {
-             throw new Error("No feature passed");
-           }
+       marked.Parser = Parser;
+       marked.parser = Parser.parse;
+       marked.Renderer = Renderer;
+       marked.TextRenderer = TextRenderer;
+       marked.Lexer = Lexer;
+       marked.lexer = Lexer.lex;
+       marked.Tokenizer = Tokenizer;
+       marked.Slugger = Slugger;
+       marked.parse = marked;
+       var marked_1 = marked;

 
 

-           if (!name) {
-             throw new Error(".featureOf() requires a name");
-           }
+       var tiler$4 = utilTiler();
+       var dispatch$5 = dispatch$8('loaded');
+       var _tileZoom$1 = 14;
+       var _osmoseUrlRoot = 'https://osmose.openstreetmap.fr/api/0.3';
+       var _osmoseData = {
+         icons: {},
+         items: []
+       }; // This gets reassigned if reset

 
 

-           if (!feature || feature.type !== "Feature" || !feature.geometry) {
-             throw new Error("Invalid input to " + name + ", Feature with geometry required");
-           }
+       var _cache;

 
 

-           if (!feature.geometry || feature.geometry.type !== type) {
-             throw new Error("Invalid input to " + name + ": must be a " + type + ", given " + feature.geometry.type);
-           }
+       function abortRequest$4(controller) {
+         if (controller) {
+           controller.abort();

          }
          }

+       }

 
 

-         exports.featureOf = featureOf;
-         /**
-          * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.
-          * Internally this uses {@link geojsonType} to judge geometry types.
-          *
-          * @name collectionOf
-          * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged
-          * @param {string} type expected GeoJSON type
-          * @param {string} name name of calling function
-          * @throws {Error} if value is not the expected type.
-          */
-
-         function collectionOf(featureCollection, type, name) {
-           if (!featureCollection) {
-             throw new Error("No featureCollection passed");
-           }
+       function abortUnwantedRequests$1(cache, tiles) {
+         Object.keys(cache.inflightTile).forEach(function (k) {
+           var wanted = tiles.find(function (tile) {
+             return k === tile.id;
+           });

 
 

-           if (!name) {
-             throw new Error(".collectionOf() requires a name");
+           if (!wanted) {
+             abortRequest$4(cache.inflightTile[k]);
+             delete cache.inflightTile[k];

            }
            }

+         });
+       }

 
 

-           if (!featureCollection || featureCollection.type !== "FeatureCollection") {
-             throw new Error("Invalid input to " + name + ", FeatureCollection required");
-           }
+       function encodeIssueRtree(d) {
+         return {
+           minX: d.loc[0],
+           minY: d.loc[1],
+           maxX: d.loc[0],
+           maxY: d.loc[1],
+           data: d
+         };
+       } // Replace or remove QAItem from rtree

 
 

-           for (var _i = 0, _a = featureCollection.features; _i < _a.length; _i++) {
-             var feature = _a[_i];

 
 

-             if (!feature || feature.type !== "Feature" || !feature.geometry) {
-               throw new Error("Invalid input to " + name + ", Feature with geometry required");
-             }
+       function updateRtree$1(item, replace) {
+         _cache.rtree.remove(item, function (a, b) {
+           return a.data.id === b.data.id;
+         });

 
 

-             if (!feature.geometry || feature.geometry.type !== type) {
-               throw new Error("Invalid input to " + name + ": must be a " + type + ", given " + feature.geometry.type);
-             }
-           }
+         if (replace) {
+           _cache.rtree.insert(item);

          }
          }

+       } // Issues shouldn't obscure each other

 
 

-         exports.collectionOf = collectionOf;
-         /**
-          * Get Geometry from Feature or Geometry Object
-          *
-          * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object
-          * @returns {Geometry|null} GeoJSON Geometry Object
-          * @throws {Error} if geojson is not a Feature or Geometry Object
-          * @example
-          * var point = {
-          *   "type": "Feature",
-          *   "properties": {},
-          *   "geometry": {
-          *     "type": "Point",
-          *     "coordinates": [110, 40]
-          *   }
-          * }
-          * var geom = turf.getGeom(point)
-          * //={"type": "Point", "coordinates": [110, 40]}
-          */
-
-         function getGeom(geojson) {
-           if (geojson.type === "Feature") {
-             return geojson.geometry;
-           }

 
 

-           return geojson;
-         }
+       function preventCoincident(loc) {
+         var coincident = false;

 
 

-         exports.getGeom = getGeom;
-         /**
-          * Get GeoJSON object's type, Geometry type is prioritize.
-          *
-          * @param {GeoJSON} geojson GeoJSON object
-          * @param {string} [name="geojson"] name of the variable to display in error message
-          * @returns {string} GeoJSON type
-          * @example
-          * var point = {
-          *   "type": "Feature",
-          *   "properties": {},
-          *   "geometry": {
-          *     "type": "Point",
-          *     "coordinates": [110, 40]
-          *   }
-          * }
-          * var geom = turf.getType(point)
-          * //="Point"
-          */
+         do {
+           // first time, move marker up. after that, move marker right.
+           var delta = coincident ? [0.00001, 0] : [0, 0.00001];
+           loc = geoVecAdd(loc, delta);
+           var bbox = geoExtent(loc).bbox();
+           coincident = _cache.rtree.search(bbox).length;
+         } while (coincident);

 
 

-         function getType(geojson, name) {
-           if (geojson.type === "FeatureCollection") {
-             return "FeatureCollection";
-           }
+         return loc;
+       }

 
 

-           if (geojson.type === "GeometryCollection") {
-             return "GeometryCollection";
-           }
+       var serviceOsmose = {
+         title: 'osmose',
+         init: function init() {
+           _mainFileFetcher.get('qa_data').then(function (d) {
+             _osmoseData = d.osmose;
+             _osmoseData.items = Object.keys(d.osmose.icons).map(function (s) {
+               return s.split('-')[0];
+             }).reduce(function (unique, item) {
+               return unique.indexOf(item) !== -1 ? unique : [].concat(_toConsumableArray(unique), [item]);
+             }, []);
+           });

 
 

-           if (geojson.type === "Feature" && geojson.geometry !== null) {
-             return geojson.geometry.type;
+           if (!_cache) {
+             this.reset();

            }
 
            }
 

-           return geojson.type;
-         }
-
-         exports.getType = getType;
-       });
-
-       var lineclip_1 = lineclip;
-       var _default = lineclip;
-       lineclip.polyline = lineclip;
-       lineclip.polygon = polygonclip; // Cohen-Sutherland line clippign algorithm, adapted to efficiently
-       // handle polylines rather than just segments
-
-       function lineclip(points, bbox, result) {
-         var len = points.length,
-             codeA = bitCode(points[0], bbox),
-             part = [],
-             i,
-             a,
-             b,
-             codeB,
-             lastCode;
-         if (!result) result = [];
-
-         for (i = 1; i < len; i++) {
-           a = points[i - 1];
-           b = points[i];
-           codeB = lastCode = bitCode(b, bbox);
-
-           while (true) {
-             if (!(codeA | codeB)) {
-               // accept
-               part.push(a);
-
-               if (codeB !== lastCode) {
-                 // segment went outside
-                 part.push(b);
+           this.event = utilRebind(this, dispatch$5, 'on');
+         },
+         reset: function reset() {
+           var _strings = {};
+           var _colors = {};

 
 

-                 if (i < len - 1) {
-                   // start a new line
-                   result.push(part);
-                   part = [];
-                 }
-               } else if (i === len - 1) {
-                 part.push(b);
-               }
+           if (_cache) {
+             Object.values(_cache.inflightTile).forEach(abortRequest$4); // Strings and colors are static and should not be re-populated

 
 

-               break;
-             } else if (codeA & codeB) {
-               // trivial reject
-               break;
-             } else if (codeA) {
-               // a outside, intersect with clip edge
-               a = intersect(a, b, codeA, bbox);
-               codeA = bitCode(a, bbox);
-             } else {
-               // b outside
-               b = intersect(a, b, codeB, bbox);
-               codeB = bitCode(b, bbox);
-             }
+             _strings = _cache.strings;
+             _colors = _cache.colors;

            }
 
            }
 

-           codeA = lastCode;
-         }
-
-         if (part.length) result.push(part);
-         return result;
-       } // Sutherland-Hodgeman polygon clipping algorithm
-
+           _cache = {
+             data: {},
+             loadedTile: {},
+             inflightTile: {},
+             inflightPost: {},
+             closed: {},
+             rtree: new RBush(),
+             strings: _strings,
+             colors: _colors
+           };
+         },
+         loadIssues: function loadIssues(projection) {
+           var _this = this;

 
 

-       function polygonclip(points, bbox) {
-         var result, edge, prev, prevInside, i, p, inside; // clip against each side of the clip rectangle
+           var params = {
+             // Tiles return a maximum # of issues
+             // So we want to filter our request for only types iD supports
+             item: _osmoseData.items
+           }; // determine the needed tiles to cover the view

 
 

-         for (edge = 1; edge <= 8; edge *= 2) {
-           result = [];
-           prev = points[points.length - 1];
-           prevInside = !(bitCode(prev, bbox) & edge);
+           var tiles = tiler$4.zoomExtent([_tileZoom$1, _tileZoom$1]).getTiles(projection); // abort inflight requests that are no longer needed

 
 

-           for (i = 0; i < points.length; i++) {
-             p = points[i];
-             inside = !(bitCode(p, bbox) & edge); // if segment goes through the clip window, add an intersection
+           abortUnwantedRequests$1(_cache, tiles); // issue new requests..

 
 

-             if (inside !== prevInside) result.push(intersect(prev, p, edge, bbox));
-             if (inside) result.push(p); // add a point if it's inside
+           tiles.forEach(function (tile) {
+             if (_cache.loadedTile[tile.id] || _cache.inflightTile[tile.id]) return;

 
 

-             prev = p;
-             prevInside = inside;
-           }
+             var _tile$xyz = _slicedToArray(tile.xyz, 3),
+                 x = _tile$xyz[0],
+                 y = _tile$xyz[1],
+                 z = _tile$xyz[2];

 
 

-           points = result;
-           if (!points.length) break;
-         }
+             var url = "".concat(_osmoseUrlRoot, "/issues/").concat(z, "/").concat(x, "/").concat(y, ".json?") + utilQsString(params);
+             var controller = new AbortController();
+             _cache.inflightTile[tile.id] = controller;
+             d3_json(url, {
+               signal: controller.signal
+             }).then(function (data) {
+               delete _cache.inflightTile[tile.id];
+               _cache.loadedTile[tile.id] = true;

 
 

-         return result;
-       } // intersect a segment against one of the 4 lines that make up the bbox
+               if (data.features) {
+                 data.features.forEach(function (issue) {
+                   var _issue$properties = issue.properties,
+                       item = _issue$properties.item,
+                       cl = _issue$properties["class"],
+                       id = _issue$properties.uuid;
+                   /* Osmose issues are uniquely identified by a unique
+                     `item` and `class` combination (both integer values) */

 
 

+                   var itemType = "".concat(item, "-").concat(cl); // Filter out unsupported issue types (some are too specific or advanced)

 
 

-       function intersect(a, b, edge, bbox) {
-         return edge & 8 ? [a[0] + (b[0] - a[0]) * (bbox[3] - a[1]) / (b[1] - a[1]), bbox[3]] : // top
-         edge & 4 ? [a[0] + (b[0] - a[0]) * (bbox[1] - a[1]) / (b[1] - a[1]), bbox[1]] : // bottom
-         edge & 2 ? [bbox[2], a[1] + (b[1] - a[1]) * (bbox[2] - a[0]) / (b[0] - a[0])] : // right
-         edge & 1 ? [bbox[0], a[1] + (b[1] - a[1]) * (bbox[0] - a[0]) / (b[0] - a[0])] : // left
-         null;
-       } // bit code reflects the point position relative to the bbox:
-       //         left  mid  right
-       //    top  1001  1000  1010
-       //    mid  0001  0000  0010
-       // bottom  0101  0100  0110
+                   if (itemType in _osmoseData.icons) {
+                     var loc = issue.geometry.coordinates; // lon, lat

 
 

+                     loc = preventCoincident(loc);
+                     var d = new QAItem(loc, _this, itemType, id, {
+                       item: item
+                     }); // Setting elems here prevents UI detail requests

 
 

-       function bitCode(p, bbox) {
-         var code = 0;
-         if (p[0] < bbox[0]) code |= 1; // left
-         else if (p[0] > bbox[2]) code |= 2; // right
+                     if (item === 8300 || item === 8360) {
+                       d.elems = [];
+                     }

 
 

-         if (p[1] < bbox[1]) code |= 4; // bottom
-         else if (p[1] > bbox[3]) code |= 8; // top
+                     _cache.data[d.id] = d;

 
 

-         return code;
-       }
-       lineclip_1["default"] = _default;
+                     _cache.rtree.insert(encodeIssueRtree(d));
+                   }
+                 });
+               }

 
 

-       var bboxClip_1 = createCommonjsModule(function (module, exports) {
+               dispatch$5.call('loaded');
+             })["catch"](function () {
+               delete _cache.inflightTile[tile.id];
+               _cache.loadedTile[tile.id] = true;
+             });
+           });
+         },
+         loadIssueDetail: function loadIssueDetail(issue) {
+           var _this2 = this;

 
 

-         var __importStar = commonjsGlobal && commonjsGlobal.__importStar || function (mod) {
-           if (mod && mod.__esModule) return mod;
-           var result = {};
-           if (mod != null) for (var k in mod) {
-             if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+           // Issue details only need to be fetched once
+           if (issue.elems !== undefined) {
+             return Promise.resolve(issue);

            }
            }

-           result["default"] = mod;
-           return result;
-         };

 
 

-         Object.defineProperty(exports, "__esModule", {
-           value: true
-         });
+           var url = "".concat(_osmoseUrlRoot, "/issue/").concat(issue.id, "?langs=").concat(_mainLocalizer.localeCode());

 
 

-         var lineclip = __importStar(lineclip_1);
-         /**
-          * Takes a {@link Feature} and a bbox and clips the feature to the bbox using
-          * [lineclip](https://github.com/mapbox/lineclip).
-          * May result in degenerate edges when clipping Polygons.
-          *
-          * @name bboxClip
-          * @param {Feature<LineString|MultiLineString|Polygon|MultiPolygon>} feature feature to clip to the bbox
-          * @param {BBox} bbox extent in [minX, minY, maxX, maxY] order
-          * @returns {Feature<LineString|MultiLineString|Polygon|MultiPolygon>} clipped Feature
-          * @example
-          * var bbox = [0, 0, 10, 10];
-          * var poly = turf.polygon([[[2, 2], [8, 4], [12, 8], [3, 7], [2, 2]]]);
-          *
-          * var clipped = turf.bboxClip(poly, bbox);
-          *
-          * //addToMap
-          * var addToMap = [bbox, poly, clipped]
-          */
+           var cacheDetails = function cacheDetails(data) {
+             // Associated elements used for highlighting
+             // Assign directly for immediate use in the callback
+             issue.elems = data.elems.map(function (e) {
+               return e.type.substring(0, 1) + e.id;
+             }); // Some issues have instance specific detail in a subtitle

 
 

+             issue.detail = data.subtitle ? marked_1(data.subtitle.auto) : '';

 
 

-         function bboxClip(feature, bbox) {
-           var geom = invariant.getGeom(feature);
-           var type = geom.type;
-           var properties = feature.type === "Feature" ? feature.properties : {};
-           var coords = geom.coordinates;
+             _this2.replaceItem(issue);
+           };

 
 

-           switch (type) {
-             case "LineString":
-             case "MultiLineString":
-               var lines_1 = [];
+           return d3_json(url).then(cacheDetails).then(function () {
+             return issue;
+           });
+         },
+         loadStrings: function loadStrings() {
+           var locale = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _mainLocalizer.localeCode();
+           var items = Object.keys(_osmoseData.icons);

 
 

-               if (type === "LineString") {
-                 coords = [coords];
-               }
+           if (locale in _cache.strings && Object.keys(_cache.strings[locale]).length === items.length) {
+             return Promise.resolve(_cache.strings[locale]);
+           } // May be partially populated already if some requests were successful

 
 

-               coords.forEach(function (line) {
-                 lineclip.polyline(line, bbox, lines_1);
-               });

 
 

-               if (lines_1.length === 1) {
-                 return helpers$1.lineString(lines_1[0], properties);
-               }
+           if (!(locale in _cache.strings)) {
+             _cache.strings[locale] = {};
+           } // Only need to cache strings for supported issue types
+           // Using multiple individual item + class requests to reduce fetched data size

 
 

-               return helpers$1.multiLineString(lines_1, properties);

 
 

-             case "Polygon":
-               return helpers$1.polygon(clipPolygon(coords, bbox), properties);
+           var allRequests = items.map(function (itemType) {
+             // No need to request data we already have
+             if (itemType in _cache.strings[locale]) return null;

 
 

-             case "MultiPolygon":
-               return helpers$1.multiPolygon(coords.map(function (poly) {
-                 return clipPolygon(poly, bbox);
-               }), properties);
+             var cacheData = function cacheData(data) {
+               // Bunch of nested single value arrays of objects
+               var _data$categories = _slicedToArray(data.categories, 1),
+                   _data$categories$ = _data$categories[0],
+                   cat = _data$categories$ === void 0 ? {
+                 items: []
+               } : _data$categories$;

 
 

-             default:
-               throw new Error("geometry " + type + " not supported");
-           }
-         }
+               var _cat$items = _slicedToArray(cat.items, 1),
+                   _cat$items$ = _cat$items[0],
+                   item = _cat$items$ === void 0 ? {
+                 "class": []
+               } : _cat$items$;

 
 

-         exports["default"] = bboxClip;
+               var _item$class = _slicedToArray(item["class"], 1),
+                   _item$class$ = _item$class[0],
+                   cl = _item$class$ === void 0 ? null : _item$class$; // If null default value is reached, data wasn't as expected (or was empty)

 
 

-         function clipPolygon(rings, bbox) {
-           var outRings = [];

 
 

-           for (var _i = 0, rings_1 = rings; _i < rings_1.length; _i++) {
-             var ring = rings_1[_i];
-             var clipped = lineclip.polygon(ring, bbox);
+               if (!cl) {
+                 /* eslint-disable no-console */
+                 console.log("Osmose strings request (".concat(itemType, ") had unexpected data"));
+                 /* eslint-enable no-console */

 
 

-             if (clipped.length > 0) {
-               if (clipped[0][0] !== clipped[clipped.length - 1][0] || clipped[0][1] !== clipped[clipped.length - 1][1]) {
-                 clipped.push(clipped[0]);
-               }
+                 return;
+               } // Cache served item colors to automatically style issue markers later

 
 

-               if (clipped.length >= 4) {
-                 outRings.push(clipped);
-               }
-             }
-           }

 
 

-           return outRings;
-         }
-       });
-       var turf_bboxClip = /*@__PURE__*/getDefaultExportFromCjs(bboxClip_1);
+               var itemInt = item.item,
+                   color = item.color;

 
 

-       var fastJsonStableStringify = function fastJsonStableStringify(data, opts) {
-         if (!opts) opts = {};
-         if (typeof opts === 'function') opts = {
-           cmp: opts
-         };
-         var cycles = typeof opts.cycles === 'boolean' ? opts.cycles : false;
+               if (/^#[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}/.test(color)) {
+                 _cache.colors[itemInt] = color;
+               } // Value of root key will be null if no string exists
+               // If string exists, value is an object with key 'auto' for string

 
 

-         var cmp = opts.cmp && function (f) {
-           return function (node) {
-             return function (a, b) {
-               var aobj = {
-                 key: a,
-                 value: node[a]
-               };
-               var bobj = {
-                 key: b,
-                 value: node[b]
-               };
-               return f(aobj, bobj);
-             };
-           };
-         }(opts.cmp);

 
 

-         var seen = [];
-         return function stringify(node) {
-           if (node && node.toJSON && typeof node.toJSON === 'function') {
-             node = node.toJSON();
-           }
+               var title = cl.title,
+                   detail = cl.detail,
+                   fix = cl.fix,
+                   trap = cl.trap; // Osmose titles shouldn't contain markdown

 
 

-           if (node === undefined) return;
-           if (typeof node == 'number') return isFinite(node) ? '' + node : 'null';
-           if (_typeof(node) !== 'object') return JSON.stringify(node);
-           var i, out;
+               var issueStrings = {};
+               if (title) issueStrings.title = title.auto;
+               if (detail) issueStrings.detail = marked_1(detail.auto);
+               if (trap) issueStrings.trap = marked_1(trap.auto);
+               if (fix) issueStrings.fix = marked_1(fix.auto);
+               _cache.strings[locale][itemType] = issueStrings;
+             };

 
 

-           if (Array.isArray(node)) {
-             out = '[';
+             var _itemType$split = itemType.split('-'),
+                 _itemType$split2 = _slicedToArray(_itemType$split, 2),
+                 item = _itemType$split2[0],
+                 cl = _itemType$split2[1]; // Osmose API falls back to English strings where untranslated or if locale doesn't exist

 
 

-             for (i = 0; i < node.length; i++) {
-               if (i) out += ',';
-               out += stringify(node[i]) || 'null';
-             }

 
 

-             return out + ']';
-           }
+             var url = "".concat(_osmoseUrlRoot, "/items/").concat(item, "/class/").concat(cl, "?langs=").concat(locale);
+             return d3_json(url).then(cacheData);
+           }).filter(Boolean);
+           return Promise.all(allRequests).then(function () {
+             return _cache.strings[locale];
+           });
+         },
+         getStrings: function getStrings(itemType) {
+           var locale = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _mainLocalizer.localeCode();
+           // No need to fallback to English, Osmose API handles this for us
+           return locale in _cache.strings ? _cache.strings[locale][itemType] : {};
+         },
+         getColor: function getColor(itemType) {
+           return itemType in _cache.colors ? _cache.colors[itemType] : '#FFFFFF';
+         },
+         postUpdate: function postUpdate(issue, callback) {
+           var _this3 = this;

 
 

-           if (node === null) return 'null';
+           if (_cache.inflightPost[issue.id]) {
+             return callback({
+               message: 'Issue update already inflight',
+               status: -2
+             }, issue);
+           } // UI sets the status to either 'done' or 'false'

 
 

-           if (seen.indexOf(node) !== -1) {
-             if (cycles) return JSON.stringify('__cycle__');
-             throw new TypeError('Converting circular structure to JSON');
-           }

 
 

-           var seenIndex = seen.push(node) - 1;
-           var keys = Object.keys(node).sort(cmp && cmp(node));
-           out = '';
+           var url = "".concat(_osmoseUrlRoot, "/issue/").concat(issue.id, "/").concat(issue.newStatus);
+           var controller = new AbortController();

 
 

-           for (i = 0; i < keys.length; i++) {
-             var key = keys[i];
-             var value = stringify(node[key]);
-             if (!value) continue;
-             if (out) out += ',';
-             out += JSON.stringify(key) + ':' + value;
-           }
+           var after = function after() {
+             delete _cache.inflightPost[issue.id];

 
 

-           seen.splice(seenIndex, 1);
-           return '{' + out + '}';
-         }(data);
-       };
+             _this3.removeItem(issue);

 
 

-       function DEFAULT_COMPARE(a, b) {
-         return a > b ? 1 : a < b ? -1 : 0;
-       }
+             if (issue.newStatus === 'done') {
+               // Keep track of the number of issues closed per `item` to tag the changeset
+               if (!(issue.item in _cache.closed)) {
+                 _cache.closed[issue.item] = 0;
+               }

 
 

-       var SplayTree = /*#__PURE__*/function () {
-         function SplayTree() {
-           var compare = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DEFAULT_COMPARE;
-           var noDuplicates = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
+               _cache.closed[issue.item] += 1;
+             }

 
 

-           _classCallCheck(this, SplayTree);
+             if (callback) callback(null, issue);
+           };

 
 

-           this._compare = compare;
-           this._root = null;
-           this._size = 0;
-           this._noDuplicates = !!noDuplicates;
-         }
+           _cache.inflightPost[issue.id] = controller;
+           fetch(url, {
+             signal: controller.signal
+           }).then(after)["catch"](function (err) {
+             delete _cache.inflightPost[issue.id];
+             if (callback) callback(err.message);
+           });
+         },
+         // Get all cached QAItems covering the viewport
+         getItems: function getItems(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           return _cache.rtree.search(bbox).map(function (d) {
+             return d.data;
+           });
+         },
+         // Get a QAItem from cache
+         // NOTE: Don't change method name until UI v3 is merged
+         getError: function getError(id) {
+           return _cache.data[id];
+         },
+         // get the name of the icon to display for this item
+         getIcon: function getIcon(itemType) {
+           return _osmoseData.icons[itemType];
+         },
+         // Replace a single QAItem in the cache
+         replaceItem: function replaceItem(item) {
+           if (!(item instanceof QAItem) || !item.id) return;
+           _cache.data[item.id] = item;
+           updateRtree$1(encodeIssueRtree(item), true); // true = replace

 
 

-         _createClass(SplayTree, [{
-           key: "rotateLeft",
-           value: function rotateLeft(x) {
-             var y = x.right;
+           return item;
+         },
+         // Remove a single QAItem from the cache
+         removeItem: function removeItem(item) {
+           if (!(item instanceof QAItem) || !item.id) return;
+           delete _cache.data[item.id];
+           updateRtree$1(encodeIssueRtree(item), false); // false = remove
+         },
+         // Used to populate `closed:osmose:*` changeset tags
+         getClosedCounts: function getClosedCounts() {
+           return _cache.closed;
+         },
+         itemURL: function itemURL(item) {
+           return "https://osmose.openstreetmap.fr/en/error/".concat(item.id);
+         }
+       };

 
 

-             if (y) {
-               x.right = y.left;
-               if (y.left) y.left.parent = x;
-               y.parent = x.parent;
-             }
+       var ieee754$1 = {};

 
 

-             if (!x.parent) this._root = y;else if (x === x.parent.left) x.parent.left = y;else x.parent.right = y;
-             if (y) y.left = x;
-             x.parent = y;
-           }
-         }, {
-           key: "rotateRight",
-           value: function rotateRight(x) {
-             var y = x.left;
+       /*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */

 
 

-             if (y) {
-               x.left = y.right;
-               if (y.right) y.right.parent = x;
-               y.parent = x.parent;
-             }
+       ieee754$1.read = function (buffer, offset, isLE, mLen, nBytes) {
+         var e, m;
+         var eLen = nBytes * 8 - mLen - 1;
+         var eMax = (1 << eLen) - 1;
+         var eBias = eMax >> 1;
+         var nBits = -7;
+         var i = isLE ? nBytes - 1 : 0;
+         var d = isLE ? -1 : 1;
+         var s = buffer[offset + i];
+         i += d;
+         e = s & (1 << -nBits) - 1;
+         s >>= -nBits;
+         nBits += eLen;

 
 

-             if (!x.parent) this._root = y;else if (x === x.parent.left) x.parent.left = y;else x.parent.right = y;
-             if (y) y.right = x;
-             x.parent = y;
-           }
-         }, {
-           key: "_splay",
-           value: function _splay(x) {
-             while (x.parent) {
-               var p = x.parent;
-
-               if (!p.parent) {
-                 if (p.left === x) this.rotateRight(p);else this.rotateLeft(p);
-               } else if (p.left === x && p.parent.left === p) {
-                 this.rotateRight(p.parent);
-                 this.rotateRight(p);
-               } else if (p.right === x && p.parent.right === p) {
-                 this.rotateLeft(p.parent);
-                 this.rotateLeft(p);
-               } else if (p.left === x && p.parent.right === p) {
-                 this.rotateRight(p);
-                 this.rotateLeft(p);
-               } else {
-                 this.rotateLeft(p);
-                 this.rotateRight(p);
-               }
-             }
-           }
-         }, {
-           key: "splay",
-           value: function splay(x) {
-             var p, gp, ggp, l, r;
-
-             while (x.parent) {
-               p = x.parent;
-               gp = p.parent;
-
-               if (gp && gp.parent) {
-                 ggp = gp.parent;
-                 if (ggp.left === gp) ggp.left = x;else ggp.right = x;
-                 x.parent = ggp;
-               } else {
-                 x.parent = null;
-                 this._root = x;
-               }
+         for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}

 
 

-               l = x.left;
-               r = x.right;
+         m = e & (1 << -nBits) - 1;
+         e >>= -nBits;
+         nBits += mLen;

 
 

-               if (x === p.left) {
-                 // left
-                 if (gp) {
-                   if (gp.left === p) {
-                     /* zig-zig */
-                     if (p.right) {
-                       gp.left = p.right;
-                       gp.left.parent = gp;
-                     } else gp.left = null;
+         for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}

 
 

-                     p.right = gp;
-                     gp.parent = p;
-                   } else {
-                     /* zig-zag */
-                     if (l) {
-                       gp.right = l;
-                       l.parent = gp;
-                     } else gp.right = null;
-
-                     x.left = gp;
-                     gp.parent = x;
-                   }
-                 }
+         if (e === 0) {
+           e = 1 - eBias;
+         } else if (e === eMax) {
+           return m ? NaN : (s ? -1 : 1) * Infinity;
+         } else {
+           m = m + Math.pow(2, mLen);
+           e = e - eBias;
+         }

 
 

-                 if (r) {
-                   p.left = r;
-                   r.parent = p;
-                 } else p.left = null;
+         return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
+       };

 
 

-                 x.right = p;
-                 p.parent = x;
-               } else {
-                 // right
-                 if (gp) {
-                   if (gp.right === p) {
-                     /* zig-zig */
-                     if (p.left) {
-                       gp.right = p.left;
-                       gp.right.parent = gp;
-                     } else gp.right = null;
-
-                     p.left = gp;
-                     gp.parent = p;
-                   } else {
-                     /* zig-zag */
-                     if (r) {
-                       gp.left = r;
-                       r.parent = gp;
-                     } else gp.left = null;
-
-                     x.right = gp;
-                     gp.parent = x;
-                   }
-                 }
+       ieee754$1.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+         var e, m, c;
+         var eLen = nBytes * 8 - mLen - 1;
+         var eMax = (1 << eLen) - 1;
+         var eBias = eMax >> 1;
+         var rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0;
+         var i = isLE ? 0 : nBytes - 1;
+         var d = isLE ? 1 : -1;
+         var s = value < 0 || value === 0 && 1 / value < 0 ? 1 : 0;
+         value = Math.abs(value);

 
 

-                 if (l) {
-                   p.right = l;
-                   l.parent = p;
-                 } else p.right = null;
+         if (isNaN(value) || value === Infinity) {
+           m = isNaN(value) ? 1 : 0;
+           e = eMax;
+         } else {
+           e = Math.floor(Math.log(value) / Math.LN2);

 
 

-                 x.left = p;
-                 p.parent = x;
-               }
-             }
-           }
-         }, {
-           key: "replace",
-           value: function replace(u, v) {
-             if (!u.parent) this._root = v;else if (u === u.parent.left) u.parent.left = v;else u.parent.right = v;
-             if (v) v.parent = u.parent;
-           }
-         }, {
-           key: "minNode",
-           value: function minNode() {
-             var u = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this._root;
-             if (u) while (u.left) {
-               u = u.left;
-             }
-             return u;
-           }
-         }, {
-           key: "maxNode",
-           value: function maxNode() {
-             var u = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this._root;
-             if (u) while (u.right) {
-               u = u.right;
-             }
-             return u;
+           if (value * (c = Math.pow(2, -e)) < 1) {
+             e--;
+             c *= 2;

            }
            }

-         }, {
-           key: "insert",
-           value: function insert(key, data) {
-             var z = this._root;
-             var p = null;
-             var comp = this._compare;
-             var cmp;
-
-             if (this._noDuplicates) {
-               while (z) {
-                 p = z;
-                 cmp = comp(z.key, key);
-                 if (cmp === 0) return;else if (comp(z.key, key) < 0) z = z.right;else z = z.left;
-               }
-             } else {
-               while (z) {
-                 p = z;
-                 if (comp(z.key, key) < 0) z = z.right;else z = z.left;
-               }
-             }

 
 

-             z = {
-               key: key,
-               data: data,
-               left: null,
-               right: null,
-               parent: p
-             };
-             if (!p) this._root = z;else if (comp(p.key, z.key) < 0) p.right = z;else p.left = z;
-             this.splay(z);
-             this._size++;
-             return z;
+           if (e + eBias >= 1) {
+             value += rt / c;
+           } else {
+             value += rt * Math.pow(2, 1 - eBias);

            }
            }

-         }, {
-           key: "find",
-           value: function find(key) {
-             var z = this._root;
-             var comp = this._compare;

 
 

-             while (z) {
-               var cmp = comp(z.key, key);
-               if (cmp < 0) z = z.right;else if (cmp > 0) z = z.left;else return z;
-             }
-
-             return null;
+           if (value * c >= 2) {
+             e++;
+             c /= 2;

            }
            }

-           /**
-            * Whether the tree contains a node with the given key
-            * @param  {Key} key
-            * @return {boolean} true/false
-            */

 
 

-         }, {
-           key: "contains",
-           value: function contains(key) {
-             var node = this._root;
-             var comparator = this._compare;
+           if (e + eBias >= eMax) {
+             m = 0;
+             e = eMax;
+           } else if (e + eBias >= 1) {
+             m = (value * c - 1) * Math.pow(2, mLen);
+             e = e + eBias;
+           } else {
+             m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
+             e = 0;
+           }
+         }

 
 

-             while (node) {
-               var cmp = comparator(key, node.key);
-               if (cmp === 0) return true;else if (cmp < 0) node = node.left;else node = node.right;
-             }
+         for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

 
 

-             return false;
-           }
-         }, {
-           key: "remove",
-           value: function remove(key) {
-             var z = this.find(key);
-             if (!z) return false;
-             this.splay(z);
-             if (!z.left) this.replace(z, z.right);else if (!z.right) this.replace(z, z.left);else {
-               var y = this.minNode(z.right);
+         e = e << mLen | m;
+         eLen += mLen;

 
 

-               if (y.parent !== z) {
-                 this.replace(y, y.right);
-                 y.right = z.right;
-                 y.right.parent = y;
-               }
+         for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

 
 

-               this.replace(z, y);
-               y.left = z.left;
-               y.left.parent = y;
-             }
-             this._size--;
-             return true;
-           }
-         }, {
-           key: "removeNode",
-           value: function removeNode(z) {
-             if (!z) return false;
-             this.splay(z);
-             if (!z.left) this.replace(z, z.right);else if (!z.right) this.replace(z, z.left);else {
-               var y = this.minNode(z.right);
+         buffer[offset + i - d] |= s * 128;
+       };

 
 

-               if (y.parent !== z) {
-                 this.replace(y, y.right);
-                 y.right = z.right;
-                 y.right.parent = y;
-               }
+       var pbf = Pbf;
+       var ieee754 = ieee754$1;

 
 

-               this.replace(z, y);
-               y.left = z.left;
-               y.left.parent = y;
-             }
-             this._size--;
-             return true;
-           }
-         }, {
-           key: "erase",
-           value: function erase(key) {
-             var z = this.find(key);
-             if (!z) return;
-             this.splay(z);
-             var s = z.left;
-             var t = z.right;
-             var sMax = null;
+       function Pbf(buf) {
+         this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);
+         this.pos = 0;
+         this.type = 0;
+         this.length = this.buf.length;
+       }

 
 

-             if (s) {
-               s.parent = null;
-               sMax = this.maxNode(s);
-               this.splay(sMax);
-               this._root = sMax;
-             }
+       Pbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum

 
 

-             if (t) {
-               if (s) sMax.right = t;else this._root = t;
-               t.parent = sMax;
-             }
+       Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64

 
 

-             this._size--;
-           }
-           /**
-            * Removes and returns the node with smallest key
-            * @return {?Node}
-            */
+       Pbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields

 
 

-         }, {
-           key: "pop",
-           value: function pop() {
-             var node = this._root,
-                 returnValue = null;
+       Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32

 
 

-             if (node) {
-               while (node.left) {
-                 node = node.left;
-               }
+       var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
+           SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32; // Threshold chosen based on both benchmarking and knowledge about browser string
+       // data structures (which currently switch structure types at 12 bytes or more)

 
 

-               returnValue = {
-                 key: node.key,
-                 data: node.data
-               };
-               this.remove(node.key);
-             }
+       var TEXT_DECODER_MIN_LENGTH = 12;
+       var utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf8');
+       Pbf.prototype = {
+         destroy: function destroy() {
+           this.buf = null;
+         },
+         // === READING =================================================================
+         readFields: function readFields(readField, result, end) {
+           end = end || this.length;

 
 

-             return returnValue;
+           while (this.pos < end) {
+             var val = this.readVarint(),
+                 tag = val >> 3,
+                 startPos = this.pos;
+             this.type = val & 0x7;
+             readField(tag, result, this);
+             if (this.pos === startPos) this.skip(val);

            }
            }

-           /* eslint-disable class-methods-use-this */
-
-           /**
-            * Successor node
-            * @param  {Node} node
-            * @return {?Node}
-            */

 
 

-         }, {
-           key: "next",
-           value: function next(node) {
-             var successor = node;
+           return result;
+         },
+         readMessage: function readMessage(readField, result) {
+           return this.readFields(readField, result, this.readVarint() + this.pos);
+         },
+         readFixed32: function readFixed32() {
+           var val = readUInt32(this.buf, this.pos);
+           this.pos += 4;
+           return val;
+         },
+         readSFixed32: function readSFixed32() {
+           var val = readInt32(this.buf, this.pos);
+           this.pos += 4;
+           return val;
+         },
+         // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
+         readFixed64: function readFixed64() {
+           var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;
+           this.pos += 8;
+           return val;
+         },
+         readSFixed64: function readSFixed64() {
+           var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;
+           this.pos += 8;
+           return val;
+         },
+         readFloat: function readFloat() {
+           var val = ieee754.read(this.buf, this.pos, true, 23, 4);
+           this.pos += 4;
+           return val;
+         },
+         readDouble: function readDouble() {
+           var val = ieee754.read(this.buf, this.pos, true, 52, 8);
+           this.pos += 8;
+           return val;
+         },
+         readVarint: function readVarint(isSigned) {
+           var buf = this.buf,
+               val,
+               b;
+           b = buf[this.pos++];
+           val = b & 0x7f;
+           if (b < 0x80) return val;
+           b = buf[this.pos++];
+           val |= (b & 0x7f) << 7;
+           if (b < 0x80) return val;
+           b = buf[this.pos++];
+           val |= (b & 0x7f) << 14;
+           if (b < 0x80) return val;
+           b = buf[this.pos++];
+           val |= (b & 0x7f) << 21;
+           if (b < 0x80) return val;
+           b = buf[this.pos];
+           val |= (b & 0x0f) << 28;
+           return readVarintRemainder(val, isSigned, this);
+         },
+         readVarint64: function readVarint64() {
+           // for compatibility with v2.0.1
+           return this.readVarint(true);
+         },
+         readSVarint: function readSVarint() {
+           var num = this.readVarint();
+           return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+         },
+         readBoolean: function readBoolean() {
+           return Boolean(this.readVarint());
+         },
+         readString: function readString() {
+           var end = this.readVarint() + this.pos;
+           var pos = this.pos;
+           this.pos = end;

 
 

-             if (successor) {
-               if (successor.right) {
-                 successor = successor.right;
+           if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {
+             // longer strings are fast with the built-in browser TextDecoder API
+             return readUtf8TextDecoder(this.buf, pos, end);
+           } // short strings are fast with our custom implementation

 
 

-                 while (successor && successor.left) {
-                   successor = successor.left;
-                 }
-               } else {
-                 successor = node.parent;

 
 

-                 while (successor && successor.right === node) {
-                   node = successor;
-                   successor = successor.parent;
-                 }
-               }
-             }
+           return readUtf8(this.buf, pos, end);
+         },
+         readBytes: function readBytes() {
+           var end = this.readVarint() + this.pos,
+               buffer = this.buf.subarray(this.pos, end);
+           this.pos = end;
+           return buffer;
+         },
+         // verbose for performance reasons; doesn't affect gzipped size
+         readPackedVarint: function readPackedVarint(arr, isSigned) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-             return successor;
+           while (this.pos < end) {
+             arr.push(this.readVarint(isSigned));

            }
            }

-           /**
-            * Predecessor node
-            * @param  {Node} node
-            * @return {?Node}
-            */

 
 

-         }, {
-           key: "prev",
-           value: function prev(node) {
-             var predecessor = node;
+           return arr;
+         },
+         readPackedSVarint: function readPackedSVarint(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-             if (predecessor) {
-               if (predecessor.left) {
-                 predecessor = predecessor.left;
+           while (this.pos < end) {
+             arr.push(this.readSVarint());
+           }

 
 

-                 while (predecessor && predecessor.right) {
-                   predecessor = predecessor.right;
-                 }
-               } else {
-                 predecessor = node.parent;
+           return arr;
+         },
+         readPackedBoolean: function readPackedBoolean(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-                 while (predecessor && predecessor.left === node) {
-                   node = predecessor;
-                   predecessor = predecessor.parent;
-                 }
-               }
-             }
+           while (this.pos < end) {
+             arr.push(this.readBoolean());
+           }

 
 

-             return predecessor;
+           return arr;
+         },
+         readPackedFloat: function readPackedFloat(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());
+           var end = readPackedEnd(this);
+           arr = arr || [];
+
+           while (this.pos < end) {
+             arr.push(this.readFloat());

            }
            }

-           /* eslint-enable class-methods-use-this */

 
 

-           /**
-            * @param  {forEachCallback} callback
-            * @return {SplayTree}
-            */
+           return arr;
+         },
+         readPackedDouble: function readPackedDouble(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-         }, {
-           key: "forEach",
-           value: function forEach(callback) {
-             var current = this._root;
-             var s = [],
-                 done = false,
-                 i = 0;
+           while (this.pos < end) {
+             arr.push(this.readDouble());
+           }

 
 

-             while (!done) {
-               // Reach the left most Node of the current Node
-               if (current) {
-                 // Place pointer to a tree node on the stack
-                 // before traversing the node's left subtree
-                 s.push(current);
-                 current = current.left;
-               } else {
-                 // BackTrack from the empty subtree and visit the Node
-                 // at the top of the stack; however, if the stack is
-                 // empty you are done
-                 if (s.length > 0) {
-                   current = s.pop();
-                   callback(current, i++); // We have visited the node and its left
-                   // subtree. Now, it's right subtree's turn
+           return arr;
+         },
+         readPackedFixed32: function readPackedFixed32(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-                   current = current.right;
-                 } else done = true;
-               }
-             }
+           while (this.pos < end) {
+             arr.push(this.readFixed32());
+           }

 
 

-             return this;
+           return arr;
+         },
+         readPackedSFixed32: function readPackedSFixed32(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());
+           var end = readPackedEnd(this);
+           arr = arr || [];
+
+           while (this.pos < end) {
+             arr.push(this.readSFixed32());

            }
            }

-           /**
-            * Walk key range from `low` to `high`. Stops if `fn` returns a value.
-            * @param  {Key}      low
-            * @param  {Key}      high
-            * @param  {Function} fn
-            * @param  {*?}       ctx
-            * @return {SplayTree}
-            */

 
 

-         }, {
-           key: "range",
-           value: function range(low, high, fn, ctx) {
-             var Q = [];
-             var compare = this._compare;
-             var node = this._root,
-                 cmp;
-
-             while (Q.length !== 0 || node) {
-               if (node) {
-                 Q.push(node);
-                 node = node.left;
-               } else {
-                 node = Q.pop();
-                 cmp = compare(node.key, high);
+           return arr;
+         },
+         readPackedFixed64: function readPackedFixed64(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-                 if (cmp > 0) {
-                   break;
-                 } else if (compare(node.key, low) >= 0) {
-                   if (fn.call(ctx, node)) return this; // stop if smth is returned
-                 }
+           while (this.pos < end) {
+             arr.push(this.readFixed64());
+           }

 
 

-                 node = node.right;
-               }
-             }
+           return arr;
+         },
+         readPackedSFixed64: function readPackedSFixed64(arr) {
+           if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());
+           var end = readPackedEnd(this);
+           arr = arr || [];

 
 

-             return this;
+           while (this.pos < end) {
+             arr.push(this.readSFixed64());

            }
            }

-           /**
-            * Returns all keys in order
-            * @return {Array<Key>}
-            */

 
 

-         }, {
-           key: "keys",
-           value: function keys() {
-             var current = this._root;
-             var s = [],
-                 r = [],
-                 done = false;
-
-             while (!done) {
-               if (current) {
-                 s.push(current);
-                 current = current.left;
-               } else {
-                 if (s.length > 0) {
-                   current = s.pop();
-                   r.push(current.key);
-                   current = current.right;
-                 } else done = true;
-               }
-             }
+           return arr;
+         },
+         skip: function skip(val) {
+           var type = val & 0x7;
+           if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {} else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;else if (type === Pbf.Fixed32) this.pos += 4;else if (type === Pbf.Fixed64) this.pos += 8;else throw new Error('Unimplemented type: ' + type);
+         },
+         // === WRITING =================================================================
+         writeTag: function writeTag(tag, type) {
+           this.writeVarint(tag << 3 | type);
+         },
+         realloc: function realloc(min) {
+           var length = this.length || 16;

 
 

-             return r;
+           while (length < this.pos + min) {
+             length *= 2;

            }
            }

-           /**
-            * Returns `data` fields of all nodes in order.
-            * @return {Array<Value>}
-            */

 
 

-         }, {
-           key: "values",
-           value: function values() {
-             var current = this._root;
-             var s = [],
-                 r = [],
-                 done = false;
-
-             while (!done) {
-               if (current) {
-                 s.push(current);
-                 current = current.left;
-               } else {
-                 if (s.length > 0) {
-                   current = s.pop();
-                   r.push(current.data);
-                   current = current.right;
-                 } else done = true;
-               }
-             }
+           if (length !== this.length) {
+             var buf = new Uint8Array(length);
+             buf.set(this.buf);
+             this.buf = buf;
+             this.length = length;
+           }
+         },
+         finish: function finish() {
+           this.length = this.pos;
+           this.pos = 0;
+           return this.buf.subarray(0, this.length);
+         },
+         writeFixed32: function writeFixed32(val) {
+           this.realloc(4);
+           writeInt32(this.buf, val, this.pos);
+           this.pos += 4;
+         },
+         writeSFixed32: function writeSFixed32(val) {
+           this.realloc(4);
+           writeInt32(this.buf, val, this.pos);
+           this.pos += 4;
+         },
+         writeFixed64: function writeFixed64(val) {
+           this.realloc(8);
+           writeInt32(this.buf, val & -1, this.pos);
+           writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+           this.pos += 8;
+         },
+         writeSFixed64: function writeSFixed64(val) {
+           this.realloc(8);
+           writeInt32(this.buf, val & -1, this.pos);
+           writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
+           this.pos += 8;
+         },
+         writeVarint: function writeVarint(val) {
+           val = +val || 0;

 
 

-             return r;
+           if (val > 0xfffffff || val < 0) {
+             writeBigVarint(val, this);
+             return;

            }
            }

-           /**
-            * Returns node at given index
-            * @param  {number} index
-            * @return {?Node}
-            */

 
 

-         }, {
-           key: "at",
-           value: function at(index) {
-             // removed after a consideration, more misleading than useful
-             // index = index % this.size;
-             // if (index < 0) index = this.size - index;
-             var current = this._root;
-             var s = [],
-                 done = false,
-                 i = 0;
+           this.realloc(4);
+           this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0);
+           if (val <= 0x7f) return;
+           this.buf[this.pos++] = (val >>>= 7) & 0x7f | (val > 0x7f ? 0x80 : 0);
+           if (val <= 0x7f) return;
+           this.buf[this.pos++] = (val >>>= 7) & 0x7f | (val > 0x7f ? 0x80 : 0);
+           if (val <= 0x7f) return;
+           this.buf[this.pos++] = val >>> 7 & 0x7f;
+         },
+         writeSVarint: function writeSVarint(val) {
+           this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
+         },
+         writeBoolean: function writeBoolean(val) {
+           this.writeVarint(Boolean(val));
+         },
+         writeString: function writeString(str) {
+           str = String(str);
+           this.realloc(str.length * 4);
+           this.pos++; // reserve 1 byte for short string length

 
 

-             while (!done) {
-               if (current) {
-                 s.push(current);
-                 current = current.left;
-               } else {
-                 if (s.length > 0) {
-                   current = s.pop();
-                   if (i === index) return current;
-                   i++;
-                   current = current.right;
-                 } else done = true;
-               }
-             }
+           var startPos = this.pos; // write the string directly to the buffer and see how much was written

 
 

-             return null;
-           }
-           /**
-            * Bulk-load items. Both array have to be same size
-            * @param  {Array<Key>}    keys
-            * @param  {Array<Value>}  [values]
-            * @param  {Boolean}       [presort=false] Pre-sort keys and values, using
-            *                                         tree's comparator. Sorting is done
-            *                                         in-place
-            * @return {AVLTree}
-            */
+           this.pos = writeUtf8(this.buf, str, this.pos);
+           var len = this.pos - startPos;
+           if (len >= 0x80) makeRoomForExtraLength(startPos, len, this); // finally, write the message length in the reserved place and restore the position

 
 

-         }, {
-           key: "load",
-           value: function load() {
-             var keys = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
-             var values = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
-             var presort = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
-             if (this._size !== 0) throw new Error('bulk-load: tree is not empty');
-             var size = keys.length;
-             if (presort) sort(keys, values, 0, size - 1, this._compare);
-             this._root = loadRecursive(null, keys, values, 0, size);
-             this._size = size;
-             return this;
-           }
-         }, {
-           key: "min",
-           value: function min() {
-             var node = this.minNode(this._root);
-             if (node) return node.key;else return null;
-           }
-         }, {
-           key: "max",
-           value: function max() {
-             var node = this.maxNode(this._root);
-             if (node) return node.key;else return null;
-           }
-         }, {
-           key: "isEmpty",
-           value: function isEmpty() {
-             return this._root === null;
-           }
-         }, {
-           key: "size",
-           get: function get() {
-             return this._size;
-           }
-           /**
-            * Create a tree and load it with items
-            * @param  {Array<Key>}          keys
-            * @param  {Array<Value>?}        [values]
-             * @param  {Function?}            [comparator]
-            * @param  {Boolean?}             [presort=false] Pre-sort keys and values, using
-            *                                               tree's comparator. Sorting is done
-            *                                               in-place
-            * @param  {Boolean?}             [noDuplicates=false]   Allow duplicates
-            * @return {SplayTree}
-            */
+           this.pos = startPos - 1;
+           this.writeVarint(len);
+           this.pos += len;
+         },
+         writeFloat: function writeFloat(val) {
+           this.realloc(4);
+           ieee754.write(this.buf, val, this.pos, true, 23, 4);
+           this.pos += 4;
+         },
+         writeDouble: function writeDouble(val) {
+           this.realloc(8);
+           ieee754.write(this.buf, val, this.pos, true, 52, 8);
+           this.pos += 8;
+         },
+         writeBytes: function writeBytes(buffer) {
+           var len = buffer.length;
+           this.writeVarint(len);
+           this.realloc(len);

 
 

-         }], [{
-           key: "createTree",
-           value: function createTree(keys, values, comparator, presort, noDuplicates) {
-             return new SplayTree(comparator, noDuplicates).load(keys, values, presort);
+           for (var i = 0; i < len; i++) {
+             this.buf[this.pos++] = buffer[i];

            }
            }

-         }]);
-
-         return SplayTree;
-       }();
+         },
+         writeRawMessage: function writeRawMessage(fn, obj) {
+           this.pos++; // reserve 1 byte for short message length
+           // write the message directly to the buffer and see how much was written

 
 

-       function loadRecursive(parent, keys, values, start, end) {
-         var size = end - start;
+           var startPos = this.pos;
+           fn(obj, this);
+           var len = this.pos - startPos;
+           if (len >= 0x80) makeRoomForExtraLength(startPos, len, this); // finally, write the message length in the reserved place and restore the position

 
 

-         if (size > 0) {
-           var middle = start + Math.floor(size / 2);
-           var key = keys[middle];
-           var data = values[middle];
-           var node = {
-             key: key,
-             data: data,
-             parent: parent
-           };
-           node.left = loadRecursive(node, keys, values, start, middle);
-           node.right = loadRecursive(node, keys, values, middle + 1, end);
-           return node;
+           this.pos = startPos - 1;
+           this.writeVarint(len);
+           this.pos += len;
+         },
+         writeMessage: function writeMessage(tag, fn, obj) {
+           this.writeTag(tag, Pbf.Bytes);
+           this.writeRawMessage(fn, obj);
+         },
+         writePackedVarint: function writePackedVarint(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedVarint, arr);
+         },
+         writePackedSVarint: function writePackedSVarint(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedSVarint, arr);
+         },
+         writePackedBoolean: function writePackedBoolean(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedBoolean, arr);
+         },
+         writePackedFloat: function writePackedFloat(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedFloat, arr);
+         },
+         writePackedDouble: function writePackedDouble(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedDouble, arr);
+         },
+         writePackedFixed32: function writePackedFixed32(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedFixed, arr);
+         },
+         writePackedSFixed32: function writePackedSFixed32(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedSFixed, arr);
+         },
+         writePackedFixed64: function writePackedFixed64(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedFixed2, arr);
+         },
+         writePackedSFixed64: function writePackedSFixed64(tag, arr) {
+           if (arr.length) this.writeMessage(tag, _writePackedSFixed2, arr);
+         },
+         writeBytesField: function writeBytesField(tag, buffer) {
+           this.writeTag(tag, Pbf.Bytes);
+           this.writeBytes(buffer);
+         },
+         writeFixed32Field: function writeFixed32Field(tag, val) {
+           this.writeTag(tag, Pbf.Fixed32);
+           this.writeFixed32(val);
+         },
+         writeSFixed32Field: function writeSFixed32Field(tag, val) {
+           this.writeTag(tag, Pbf.Fixed32);
+           this.writeSFixed32(val);
+         },
+         writeFixed64Field: function writeFixed64Field(tag, val) {
+           this.writeTag(tag, Pbf.Fixed64);
+           this.writeFixed64(val);
+         },
+         writeSFixed64Field: function writeSFixed64Field(tag, val) {
+           this.writeTag(tag, Pbf.Fixed64);
+           this.writeSFixed64(val);
+         },
+         writeVarintField: function writeVarintField(tag, val) {
+           this.writeTag(tag, Pbf.Varint);
+           this.writeVarint(val);
+         },
+         writeSVarintField: function writeSVarintField(tag, val) {
+           this.writeTag(tag, Pbf.Varint);
+           this.writeSVarint(val);
+         },
+         writeStringField: function writeStringField(tag, str) {
+           this.writeTag(tag, Pbf.Bytes);
+           this.writeString(str);
+         },
+         writeFloatField: function writeFloatField(tag, val) {
+           this.writeTag(tag, Pbf.Fixed32);
+           this.writeFloat(val);
+         },
+         writeDoubleField: function writeDoubleField(tag, val) {
+           this.writeTag(tag, Pbf.Fixed64);
+           this.writeDouble(val);
+         },
+         writeBooleanField: function writeBooleanField(tag, val) {
+           this.writeVarintField(tag, Boolean(val));

          }
          }

+       };

 
 

-         return null;
+       function readVarintRemainder(l, s, p) {
+         var buf = p.buf,
+             h,
+             b;
+         b = buf[p.pos++];
+         h = (b & 0x70) >> 4;
+         if (b < 0x80) return toNum(l, h, s);
+         b = buf[p.pos++];
+         h |= (b & 0x7f) << 3;
+         if (b < 0x80) return toNum(l, h, s);
+         b = buf[p.pos++];
+         h |= (b & 0x7f) << 10;
+         if (b < 0x80) return toNum(l, h, s);
+         b = buf[p.pos++];
+         h |= (b & 0x7f) << 17;
+         if (b < 0x80) return toNum(l, h, s);
+         b = buf[p.pos++];
+         h |= (b & 0x7f) << 24;
+         if (b < 0x80) return toNum(l, h, s);
+         b = buf[p.pos++];
+         h |= (b & 0x01) << 31;
+         if (b < 0x80) return toNum(l, h, s);
+         throw new Error('Expected varint not more than 10 bytes');

        }
 
        }
 

-       function sort(keys, values, left, right, compare) {
-         if (left >= right) return;
-         var pivot = keys[left + right >> 1];
-         var i = left - 1;
-         var j = right + 1;
-
-         while (true) {
-           do {
-             i++;
-           } while (compare(keys[i], pivot) < 0);
-
-           do {
-             j--;
-           } while (compare(keys[j], pivot) > 0);
+       function readPackedEnd(pbf) {
+         return pbf.type === Pbf.Bytes ? pbf.readVarint() + pbf.pos : pbf.pos + 1;
+       }

 
 

-           if (i >= j) break;
-           var tmp = keys[i];
-           keys[i] = keys[j];
-           keys[j] = tmp;
-           tmp = values[i];
-           values[i] = values[j];
-           values[j] = tmp;
+       function toNum(low, high, isSigned) {
+         if (isSigned) {
+           return high * 0x100000000 + (low >>> 0);

          }
 
          }
 

-         sort(keys, values, left, j, compare);
-         sort(keys, values, j + 1, right, compare);
+         return (high >>> 0) * 0x100000000 + (low >>> 0);

        }
 
        }
 

-       var NORMAL = 0;
-       var NON_CONTRIBUTING = 1;
-       var SAME_TRANSITION = 2;
-       var DIFFERENT_TRANSITION = 3;
-
-       var INTERSECTION = 0;
-       var UNION = 1;
-       var DIFFERENCE = 2;
-       var XOR = 3;
-
-       /**
-        * @param  {SweepEvent} event
-        * @param  {SweepEvent} prev
-        * @param  {Operation} operation
-        */
+       function writeBigVarint(val, pbf) {
+         var low, high;

 
 

-       function computeFields(event, prev, operation) {
-         // compute inOut and otherInOut fields
-         if (prev === null) {
-           event.inOut = false;
-           event.otherInOut = true; // previous line segment in sweepline belongs to the same polygon
+         if (val >= 0) {
+           low = val % 0x100000000 | 0;
+           high = val / 0x100000000 | 0;

          } else {
          } else {

-           if (event.isSubject === prev.isSubject) {
-             event.inOut = !prev.inOut;
-             event.otherInOut = prev.otherInOut; // previous line segment in sweepline belongs to the clipping polygon
-           } else {
-             event.inOut = !prev.otherInOut;
-             event.otherInOut = prev.isVertical() ? !prev.inOut : prev.inOut;
-           } // compute prevInResult field
-
+           low = ~(-val % 0x100000000);
+           high = ~(-val / 0x100000000);

 
 

-           if (prev) {
-             event.prevInResult = !inResult(prev, operation) || prev.isVertical() ? prev.prevInResult : prev;
+           if (low ^ 0xffffffff) {
+             low = low + 1 | 0;
+           } else {
+             low = 0;
+             high = high + 1 | 0;

            }
            }

-         } // check if the line segment belongs to the Boolean operation
-
-
-         var isInResult = inResult(event, operation);
-
-         if (isInResult) {
-           event.resultTransition = determineResultTransition(event, operation);
-         } else {
-           event.resultTransition = 0;

          }
          }

-       }
-       /* eslint-disable indent */
-
-       function inResult(event, operation) {
-         switch (event.type) {
-           case NORMAL:
-             switch (operation) {
-               case INTERSECTION:
-                 return !event.otherInOut;
-
-               case UNION:
-                 return event.otherInOut;

 
 

-               case DIFFERENCE:
-                 // return (event.isSubject && !event.otherInOut) ||
-                 //         (!event.isSubject && event.otherInOut);
-                 return event.isSubject && event.otherInOut || !event.isSubject && !event.otherInOut;
-
-               case XOR:
-                 return true;
-             }
-
-             break;
-
-           case SAME_TRANSITION:
-             return operation === INTERSECTION || operation === UNION;
-
-           case DIFFERENT_TRANSITION:
-             return operation === DIFFERENCE;
-
-           case NON_CONTRIBUTING:
-             return false;
+         if (val >= 0x10000000000000000 || val < -0x10000000000000000) {
+           throw new Error('Given varint doesn\'t fit into 10 bytes');

          }
 
          }
 

-         return false;
+         pbf.realloc(10);
+         writeBigVarintLow(low, high, pbf);
+         writeBigVarintHigh(high, pbf);

        }
        }

-       /* eslint-enable indent */
-

 
 

-       function determineResultTransition(event, operation) {
-         var thisIn = !event.inOut;
-         var thatIn = !event.otherInOut;
-         var isIn;
-
-         switch (operation) {
-           case INTERSECTION:
-             isIn = thisIn && thatIn;
-             break;
+       function writeBigVarintLow(low, high, pbf) {
+         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
+         low >>>= 7;
+         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
+         low >>>= 7;
+         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
+         low >>>= 7;
+         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
+         low >>>= 7;
+         pbf.buf[pbf.pos] = low & 0x7f;
+       }

 
 

-           case UNION:
-             isIn = thisIn || thatIn;
-             break;
+       function writeBigVarintHigh(high, pbf) {
+         var lsb = (high & 0x07) << 4;
+         pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0);
+         if (!high) return;
+         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
+         if (!high) return;
+         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
+         if (!high) return;
+         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
+         if (!high) return;
+         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
+         if (!high) return;
+         pbf.buf[pbf.pos++] = high & 0x7f;
+       }

 
 

-           case XOR:
-             isIn = thisIn ^ thatIn;
-             break;
+       function makeRoomForExtraLength(startPos, len, pbf) {
+         var extraLen = len <= 0x3fff ? 1 : len <= 0x1fffff ? 2 : len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7)); // if 1 byte isn't enough for encoding message length, shift the data to the right

 
 

-           case DIFFERENCE:
-             if (event.isSubject) {
-               isIn = thisIn && !thatIn;
-             } else {
-               isIn = thatIn && !thisIn;
-             }
+         pbf.realloc(extraLen);

 
 

-             break;
+         for (var i = pbf.pos - 1; i >= startPos; i--) {
+           pbf.buf[i + extraLen] = pbf.buf[i];

          }
          }

-
-         return isIn ? +1 : -1;

        }
 
        }
 

-       var SweepEvent = /*#__PURE__*/function () {
-         /**
-          * Sweepline event
-          *
-          * @class {SweepEvent}
-          * @param {Array.<Number>}  point
-          * @param {Boolean}         left
-          * @param {SweepEvent=}     otherEvent
-          * @param {Boolean}         isSubject
-          * @param {Number}          edgeType
-          */
-         function SweepEvent(point, left, otherEvent, isSubject, edgeType) {
-           _classCallCheck(this, SweepEvent);
-
-           /**
-            * Is left endpoint?
-            * @type {Boolean}
-            */
-           this.left = left;
-           /**
-            * @type {Array.<Number>}
-            */
-
-           this.point = point;
-           /**
-            * Other edge reference
-            * @type {SweepEvent}
-            */
-
-           this.otherEvent = otherEvent;
-           /**
-            * Belongs to source or clipping polygon
-            * @type {Boolean}
-            */
-
-           this.isSubject = isSubject;
-           /**
-            * Edge contribution type
-            * @type {Number}
-            */
-
-           this.type = edgeType || NORMAL;
-           /**
-            * In-out transition for the sweepline crossing polygon
-            * @type {Boolean}
-            */
-
-           this.inOut = false;
-           /**
-            * @type {Boolean}
-            */
-
-           this.otherInOut = false;
-           /**
-            * Previous event in result?
-            * @type {SweepEvent}
-            */
-
-           this.prevInResult = null;
-           /**
-            * Type of result transition (0 = not in result, +1 = out-in, -1, in-out)
-            * @type {Number}
-            */
+       function _writePackedVarint(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeVarint(arr[i]);
+         }
+       }

 
 

-           this.resultTransition = 0; // connection step
+       function _writePackedSVarint(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeSVarint(arr[i]);
+         }
+       }

 
 

-           /**
-            * @type {Number}
-            */
+       function _writePackedFloat(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeFloat(arr[i]);
+         }
+       }

 
 

-           this.otherPos = -1;
-           /**
-            * @type {Number}
-            */
+       function _writePackedDouble(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeDouble(arr[i]);
+         }
+       }

 
 

-           this.outputContourId = -1;
-           this.isExteriorRing = true; // TODO: Looks unused, remove?
+       function _writePackedBoolean(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeBoolean(arr[i]);

          }
          }

-         /**
-          * @param  {Array.<Number>}  p
-          * @return {Boolean}
-          */
+       }

 
 

+       function _writePackedFixed(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeFixed32(arr[i]);
+         }
+       }

 
 

-         _createClass(SweepEvent, [{
-           key: "isBelow",
-           value: function isBelow(p) {
-             var p0 = this.point,
-                 p1 = this.otherEvent.point;
-             return this.left ? (p0[0] - p[0]) * (p1[1] - p[1]) - (p1[0] - p[0]) * (p0[1] - p[1]) > 0 // signedArea(this.point, this.otherEvent.point, p) > 0 :
-             : (p1[0] - p[0]) * (p0[1] - p[1]) - (p0[0] - p[0]) * (p1[1] - p[1]) > 0; //signedArea(this.otherEvent.point, this.point, p) > 0;
-           }
-           /**
-            * @param  {Array.<Number>}  p
-            * @return {Boolean}
-            */
+       function _writePackedSFixed(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeSFixed32(arr[i]);
+         }
+       }

 
 

-         }, {
-           key: "isAbove",
-           value: function isAbove(p) {
-             return !this.isBelow(p);
-           }
-           /**
-            * @return {Boolean}
-            */
+       function _writePackedFixed2(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeFixed64(arr[i]);
+         }
+       }

 
 

-         }, {
-           key: "isVertical",
-           value: function isVertical() {
-             return this.point[0] === this.otherEvent.point[0];
-           }
-           /**
-            * Does event belong to result?
-            * @return {Boolean}
-            */
+       function _writePackedSFixed2(arr, pbf) {
+         for (var i = 0; i < arr.length; i++) {
+           pbf.writeSFixed64(arr[i]);
+         }
+       } // Buffer code below from https://github.com/feross/buffer, MIT-licensed

 
 

-         }, {
-           key: "clone",
-           value: function clone() {
-             var copy = new SweepEvent(this.point, this.left, this.otherEvent, this.isSubject, this.type);
-             copy.contourId = this.contourId;
-             copy.resultTransition = this.resultTransition;
-             copy.prevInResult = this.prevInResult;
-             copy.isExteriorRing = this.isExteriorRing;
-             copy.inOut = this.inOut;
-             copy.otherInOut = this.otherInOut;
-             return copy;
-           }
-         }, {
-           key: "inResult",
-           get: function get() {
-             return this.resultTransition !== 0;
-           }
-         }]);

 
 

-         return SweepEvent;
-       }();
+       function readUInt32(buf, pos) {
+         return (buf[pos] | buf[pos + 1] << 8 | buf[pos + 2] << 16) + buf[pos + 3] * 0x1000000;
+       }

 
 

-       function equals(p1, p2) {
-         if (p1[0] === p2[0]) {
-           if (p1[1] === p2[1]) {
-             return true;
-           } else {
-             return false;
-           }
-         }
+       function writeInt32(buf, val, pos) {
+         buf[pos] = val;
+         buf[pos + 1] = val >>> 8;
+         buf[pos + 2] = val >>> 16;
+         buf[pos + 3] = val >>> 24;
+       }

 
 

-         return false;
-       } // const EPSILON = 1e-9;
-       // const abs = Math.abs;
-       // TODO https://github.com/w8r/martinez/issues/6#issuecomment-262847164
-       // Precision problem.
-       //
-       // module.exports = function equals(p1, p2) {
-       //   return abs(p1[0] - p2[0]) <= EPSILON && abs(p1[1] - p2[1]) <= EPSILON;
-       // };
+       function readInt32(buf, pos) {
+         return (buf[pos] | buf[pos + 1] << 8 | buf[pos + 2] << 16) + (buf[pos + 3] << 24);
+       }

 
 

-       var epsilon$1 = 1.1102230246251565e-16;
-       var splitter = 134217729;
-       var resulterrbound = (3 + 8 * epsilon$1) * epsilon$1; // fast_expansion_sum_zeroelim routine from oritinal code
+       function readUtf8(buf, pos, end) {
+         var str = '';
+         var i = pos;

 
 

-       function sum(elen, e, flen, f, h) {
-         var Q, Qnew, hh, bvirt;
-         var enow = e[0];
-         var fnow = f[0];
-         var eindex = 0;
-         var findex = 0;
+         while (i < end) {
+           var b0 = buf[i];
+           var c = null; // codepoint

 
 

-         if (fnow > enow === fnow > -enow) {
-           Q = enow;
-           enow = e[++eindex];
-         } else {
-           Q = fnow;
-           fnow = f[++findex];
-         }
+           var bytesPerSequence = b0 > 0xEF ? 4 : b0 > 0xDF ? 3 : b0 > 0xBF ? 2 : 1;
+           if (i + bytesPerSequence > end) break;
+           var b1, b2, b3;

 
 

-         var hindex = 0;
+           if (bytesPerSequence === 1) {
+             if (b0 < 0x80) {
+               c = b0;
+             }
+           } else if (bytesPerSequence === 2) {
+             b1 = buf[i + 1];

 
 

-         if (eindex < elen && findex < flen) {
-           if (fnow > enow === fnow > -enow) {
-             Qnew = enow + Q;
-             hh = Q - (Qnew - enow);
-             enow = e[++eindex];
-           } else {
-             Qnew = fnow + Q;
-             hh = Q - (Qnew - fnow);
-             fnow = f[++findex];
-           }
+             if ((b1 & 0xC0) === 0x80) {
+               c = (b0 & 0x1F) << 0x6 | b1 & 0x3F;

 
 

-           Q = Qnew;
+               if (c <= 0x7F) {
+                 c = null;
+               }
+             }
+           } else if (bytesPerSequence === 3) {
+             b1 = buf[i + 1];
+             b2 = buf[i + 2];

 
 

-           if (hh !== 0) {
-             h[hindex++] = hh;
-           }
+             if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {
+               c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | b2 & 0x3F;

 
 

-           while (eindex < elen && findex < flen) {
-             if (fnow > enow === fnow > -enow) {
-               Qnew = Q + enow;
-               bvirt = Qnew - Q;
-               hh = Q - (Qnew - bvirt) + (enow - bvirt);
-               enow = e[++eindex];
-             } else {
-               Qnew = Q + fnow;
-               bvirt = Qnew - Q;
-               hh = Q - (Qnew - bvirt) + (fnow - bvirt);
-               fnow = f[++findex];
+               if (c <= 0x7FF || c >= 0xD800 && c <= 0xDFFF) {
+                 c = null;
+               }

              }
              }

+           } else if (bytesPerSequence === 4) {
+             b1 = buf[i + 1];
+             b2 = buf[i + 2];
+             b3 = buf[i + 3];

 
 

-             Q = Qnew;
+             if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {
+               c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | b3 & 0x3F;

 
 

-             if (hh !== 0) {
-               h[hindex++] = hh;
+               if (c <= 0xFFFF || c >= 0x110000) {
+                 c = null;
+               }

              }
            }
              }
            }

-         }

 
 

-         while (eindex < elen) {
-           Qnew = Q + enow;
-           bvirt = Qnew - Q;
-           hh = Q - (Qnew - bvirt) + (enow - bvirt);
-           enow = e[++eindex];
-           Q = Qnew;
-
-           if (hh !== 0) {
-             h[hindex++] = hh;
+           if (c === null) {
+             c = 0xFFFD;
+             bytesPerSequence = 1;
+           } else if (c > 0xFFFF) {
+             c -= 0x10000;
+             str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);
+             c = 0xDC00 | c & 0x3FF;

            }
            }

-         }
-
-         while (findex < flen) {
-           Qnew = Q + fnow;
-           bvirt = Qnew - Q;
-           hh = Q - (Qnew - bvirt) + (fnow - bvirt);
-           fnow = f[++findex];
-           Q = Qnew;

 
 

-           if (hh !== 0) {
-             h[hindex++] = hh;
-           }
-         }
-
-         if (Q !== 0 || hindex === 0) {
-           h[hindex++] = Q;
-         }
-
-         return hindex;
-       }
-       function estimate(elen, e) {
-         var Q = e[0];
-
-         for (var i = 1; i < elen; i++) {
-           Q += e[i];
-         }
-
-         return Q;
-       }
-       function vec(n) {
-         return new Float64Array(n);
-       }
-
-       var ccwerrboundA = (3 + 16 * epsilon$1) * epsilon$1;
-       var ccwerrboundB = (2 + 12 * epsilon$1) * epsilon$1;
-       var ccwerrboundC = (9 + 64 * epsilon$1) * epsilon$1 * epsilon$1;
-       var B = vec(4);
-       var C1 = vec(8);
-       var C2 = vec(12);
-       var D = vec(16);
-       var u = vec(4);
-
-       function orient2dadapt(ax, ay, bx, by, cx, cy, detsum) {
-         var acxtail, acytail, bcxtail, bcytail;
-
-         var bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0, u3;
-
-         var acx = ax - cx;
-         var bcx = bx - cx;
-         var acy = ay - cy;
-         var bcy = by - cy;
-         s1 = acx * bcy;
-         c = splitter * acx;
-         ahi = c - (c - acx);
-         alo = acx - ahi;
-         c = splitter * bcy;
-         bhi = c - (c - bcy);
-         blo = bcy - bhi;
-         s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
-         t1 = acy * bcx;
-         c = splitter * acy;
-         ahi = c - (c - acy);
-         alo = acy - ahi;
-         c = splitter * bcx;
-         bhi = c - (c - bcx);
-         blo = bcx - bhi;
-         t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
-         _i = s0 - t0;
-         bvirt = s0 - _i;
-         B[0] = s0 - (_i + bvirt) + (bvirt - t0);
-         _j = s1 + _i;
-         bvirt = _j - s1;
-         _0 = s1 - (_j - bvirt) + (_i - bvirt);
-         _i = _0 - t1;
-         bvirt = _0 - _i;
-         B[1] = _0 - (_i + bvirt) + (bvirt - t1);
-         u3 = _j + _i;
-         bvirt = u3 - _j;
-         B[2] = _j - (u3 - bvirt) + (_i - bvirt);
-         B[3] = u3;
-         var det = estimate(4, B);
-         var errbound = ccwerrboundB * detsum;
-
-         if (det >= errbound || -det >= errbound) {
-           return det;
-         }
-
-         bvirt = ax - acx;
-         acxtail = ax - (acx + bvirt) + (bvirt - cx);
-         bvirt = bx - bcx;
-         bcxtail = bx - (bcx + bvirt) + (bvirt - cx);
-         bvirt = ay - acy;
-         acytail = ay - (acy + bvirt) + (bvirt - cy);
-         bvirt = by - bcy;
-         bcytail = by - (bcy + bvirt) + (bvirt - cy);
-
-         if (acxtail === 0 && acytail === 0 && bcxtail === 0 && bcytail === 0) {
-           return det;
-         }
-
-         errbound = ccwerrboundC * detsum + resulterrbound * Math.abs(det);
-         det += acx * bcytail + bcy * acxtail - (acy * bcxtail + bcx * acytail);
-         if (det >= errbound || -det >= errbound) return det;
-         s1 = acxtail * bcy;
-         c = splitter * acxtail;
-         ahi = c - (c - acxtail);
-         alo = acxtail - ahi;
-         c = splitter * bcy;
-         bhi = c - (c - bcy);
-         blo = bcy - bhi;
-         s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
-         t1 = acytail * bcx;
-         c = splitter * acytail;
-         ahi = c - (c - acytail);
-         alo = acytail - ahi;
-         c = splitter * bcx;
-         bhi = c - (c - bcx);
-         blo = bcx - bhi;
-         t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
-         _i = s0 - t0;
-         bvirt = s0 - _i;
-         u[0] = s0 - (_i + bvirt) + (bvirt - t0);
-         _j = s1 + _i;
-         bvirt = _j - s1;
-         _0 = s1 - (_j - bvirt) + (_i - bvirt);
-         _i = _0 - t1;
-         bvirt = _0 - _i;
-         u[1] = _0 - (_i + bvirt) + (bvirt - t1);
-         u3 = _j + _i;
-         bvirt = u3 - _j;
-         u[2] = _j - (u3 - bvirt) + (_i - bvirt);
-         u[3] = u3;
-         var C1len = sum(4, B, 4, u, C1);
-         s1 = acx * bcytail;
-         c = splitter * acx;
-         ahi = c - (c - acx);
-         alo = acx - ahi;
-         c = splitter * bcytail;
-         bhi = c - (c - bcytail);
-         blo = bcytail - bhi;
-         s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
-         t1 = acy * bcxtail;
-         c = splitter * acy;
-         ahi = c - (c - acy);
-         alo = acy - ahi;
-         c = splitter * bcxtail;
-         bhi = c - (c - bcxtail);
-         blo = bcxtail - bhi;
-         t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
-         _i = s0 - t0;
-         bvirt = s0 - _i;
-         u[0] = s0 - (_i + bvirt) + (bvirt - t0);
-         _j = s1 + _i;
-         bvirt = _j - s1;
-         _0 = s1 - (_j - bvirt) + (_i - bvirt);
-         _i = _0 - t1;
-         bvirt = _0 - _i;
-         u[1] = _0 - (_i + bvirt) + (bvirt - t1);
-         u3 = _j + _i;
-         bvirt = u3 - _j;
-         u[2] = _j - (u3 - bvirt) + (_i - bvirt);
-         u[3] = u3;
-         var C2len = sum(C1len, C1, 4, u, C2);
-         s1 = acxtail * bcytail;
-         c = splitter * acxtail;
-         ahi = c - (c - acxtail);
-         alo = acxtail - ahi;
-         c = splitter * bcytail;
-         bhi = c - (c - bcytail);
-         blo = bcytail - bhi;
-         s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
-         t1 = acytail * bcxtail;
-         c = splitter * acytail;
-         ahi = c - (c - acytail);
-         alo = acytail - ahi;
-         c = splitter * bcxtail;
-         bhi = c - (c - bcxtail);
-         blo = bcxtail - bhi;
-         t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
-         _i = s0 - t0;
-         bvirt = s0 - _i;
-         u[0] = s0 - (_i + bvirt) + (bvirt - t0);
-         _j = s1 + _i;
-         bvirt = _j - s1;
-         _0 = s1 - (_j - bvirt) + (_i - bvirt);
-         _i = _0 - t1;
-         bvirt = _0 - _i;
-         u[1] = _0 - (_i + bvirt) + (bvirt - t1);
-         u3 = _j + _i;
-         bvirt = u3 - _j;
-         u[2] = _j - (u3 - bvirt) + (_i - bvirt);
-         u[3] = u3;
-         var Dlen = sum(C2len, C2, 4, u, D);
-         return D[Dlen - 1];
-       }
-
-       function orient2d(ax, ay, bx, by, cx, cy) {
-         var detleft = (ay - cy) * (bx - cx);
-         var detright = (ax - cx) * (by - cy);
-         var det = detleft - detright;
-         if (detleft === 0 || detright === 0 || detleft > 0 !== detright > 0) return det;
-         var detsum = Math.abs(detleft + detright);
-         if (Math.abs(det) >= ccwerrboundA * detsum) return det;
-         return -orient2dadapt(ax, ay, bx, by, cx, cy, detsum);
-       }
-
-       /**
-        * Signed area of the triangle (p0, p1, p2)
-        * @param  {Array.<Number>} p0
-        * @param  {Array.<Number>} p1
-        * @param  {Array.<Number>} p2
-        * @return {Number}
-        */
+           str += String.fromCharCode(c);
+           i += bytesPerSequence;
+         }

 
 

-       function signedArea(p0, p1, p2) {
-         var res = orient2d(p0[0], p0[1], p1[0], p1[1], p2[0], p2[1]);
-         if (res > 0) return -1;
-         if (res < 0) return 1;
-         return 0;
+         return str;

        }
 
        }
 

-       /**
-        * @param  {SweepEvent} e1
-        * @param  {SweepEvent} e2
-        * @return {Number}
-        */
-
-       function compareEvents(e1, e2) {
-         var p1 = e1.point;
-         var p2 = e2.point; // Different x-coordinate
-
-         if (p1[0] > p2[0]) return 1;
-         if (p1[0] < p2[0]) return -1; // Different points, but same x-coordinate
-         // Event with lower y-coordinate is processed first
-
-         if (p1[1] !== p2[1]) return p1[1] > p2[1] ? 1 : -1;
-         return specialCases(e1, e2, p1);
+       function readUtf8TextDecoder(buf, pos, end) {
+         return utf8TextDecoder.decode(buf.subarray(pos, end));

        }
        }

-       /* eslint-disable no-unused-vars */

 
 

-       function specialCases(e1, e2, p1, p2) {
-         // Same coordinates, but one is a left endpoint and the other is
-         // a right endpoint. The right endpoint is processed first
-         if (e1.left !== e2.left) return e1.left ? 1 : -1; // const p2 = e1.otherEvent.point, p3 = e2.otherEvent.point;
-         // const sa = (p1[0] - p3[0]) * (p2[1] - p3[1]) - (p2[0] - p3[0]) * (p1[1] - p3[1])
-         // Same coordinates, both events
-         // are left endpoints or right endpoints.
-         // not collinear
+       function writeUtf8(buf, str, pos) {
+         for (var i = 0, c, lead; i < str.length; i++) {
+           c = str.charCodeAt(i); // code point

 
 

-         if (signedArea(p1, e1.otherEvent.point, e2.otherEvent.point) !== 0) {
-           // the event associate to the bottom segment is processed first
-           return !e1.isBelow(e2.otherEvent.point) ? 1 : -1;
-         }
+           if (c > 0xD7FF && c < 0xE000) {
+             if (lead) {
+               if (c < 0xDC00) {
+                 buf[pos++] = 0xEF;
+                 buf[pos++] = 0xBF;
+                 buf[pos++] = 0xBD;
+                 lead = c;
+                 continue;
+               } else {
+                 c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
+                 lead = null;
+               }
+             } else {
+               if (c > 0xDBFF || i + 1 === str.length) {
+                 buf[pos++] = 0xEF;
+                 buf[pos++] = 0xBF;
+                 buf[pos++] = 0xBD;
+               } else {
+                 lead = c;
+               }

 
 

-         return !e1.isSubject && e2.isSubject ? 1 : -1;
-       }
-       /* eslint-enable no-unused-vars */
+               continue;
+             }
+           } else if (lead) {
+             buf[pos++] = 0xEF;
+             buf[pos++] = 0xBF;
+             buf[pos++] = 0xBD;
+             lead = null;
+           }

 
 

-       /**
-        * @param  {SweepEvent} se
-        * @param  {Array.<Number>} p
-        * @param  {Queue} queue
-        * @return {Queue}
-        */
+           if (c < 0x80) {
+             buf[pos++] = c;
+           } else {
+             if (c < 0x800) {
+               buf[pos++] = c >> 0x6 | 0xC0;
+             } else {
+               if (c < 0x10000) {
+                 buf[pos++] = c >> 0xC | 0xE0;
+               } else {
+                 buf[pos++] = c >> 0x12 | 0xF0;
+                 buf[pos++] = c >> 0xC & 0x3F | 0x80;
+               }

 
 

-       function divideSegment(se, p, queue) {
-         var r = new SweepEvent(p, false, se, se.isSubject);
-         var l = new SweepEvent(p, true, se.otherEvent, se.isSubject);
-         /* eslint-disable no-console */
+               buf[pos++] = c >> 0x6 & 0x3F | 0x80;
+             }

 
 

-         if (equals(se.point, se.otherEvent.point)) {
-           console.warn('what is that, a collapsed segment?', se);
+             buf[pos++] = c & 0x3F | 0x80;
+           }

          }
          }

-         /* eslint-enable no-console */
-

 
 

-         r.contourId = l.contourId = se.contourId; // avoid a rounding error. The left event would be processed after the right event
-
-         if (compareEvents(l, se.otherEvent) > 0) {
-           se.otherEvent.left = true;
-           l.left = false;
-         } // avoid a rounding error. The left event would be processed after the right event
-         // if (compareEvents(se, r) > 0) {}
-
-
-         se.otherEvent.otherEvent = l;
-         se.otherEvent = r;
-         queue.push(l);
-         queue.push(r);
-         return queue;
+         return pos;

        }
 
        }
 

-       //const EPS = 1e-9;
+       var vectorTile = {};

 
 

+       var pointGeometry = Point$1;

        /**
        /**

-        * Finds the magnitude of the cross product of two vectors (if we pretend
-        * they're in three dimensions)
-        *
-        * @param {Object} a First vector
-        * @param {Object} b Second vector
-        * @private
-        * @returns {Number} The magnitude of the cross product
-        */
-       function crossProduct(a, b) {
-         return a[0] * b[1] - a[1] * b[0];
-       }
-       /**
-        * Finds the dot product of two vectors.
+        * A standalone point geometry with useful accessor, comparison, and
+        * modification methods.

         *
         *

-        * @param {Object} a First vector
-        * @param {Object} b Second vector
-        * @private
-        * @returns {Number} The dot product
+        * @class Point
+        * @param {Number} x the x-coordinate. this could be longitude or screen
+        * pixels, or any other sort of unit.
+        * @param {Number} y the y-coordinate. this could be latitude or screen
+        * pixels, or any other sort of unit.
+        * @example
+        * var point = new Point(-77, 38);

         */
 
         */
 

-
-       function dotProduct(a, b) {
-         return a[0] * b[0] + a[1] * b[1];
+       function Point$1(x, y) {
+         this.x = x;
+         this.y = y;

        }
        }

-       /**
-        * Finds the intersection (if any) between two line segments a and b, given the
-        * line segments' end points a1, a2 and b1, b2.
-        *
-        * This algorithm is based on Schneider and Eberly.
-        * http://www.cimec.org.ar/~ncalvo/Schneider_Eberly.pdf
-        * Page 244.
-        *
-        * @param {Array.<Number>} a1 point of first line
-        * @param {Array.<Number>} a2 point of first line
-        * @param {Array.<Number>} b1 point of second line
-        * @param {Array.<Number>} b2 point of second line
-        * @param {Boolean=}       noEndpointTouch whether to skip single touchpoints
-        *                                         (meaning connected segments) as
-        *                                         intersections
-        * @returns {Array.<Array.<Number>>|Null} If the lines intersect, the point of
-        * intersection. If they overlap, the two end points of the overlapping segment.
-        * Otherwise, null.
-        */

 
 

+       Point$1.prototype = {
+         /**
+          * Clone this point, returning a new point that can be modified
+          * without affecting the old one.
+          * @return {Point} the clone
+          */
+         clone: function clone() {
+           return new Point$1(this.x, this.y);
+         },

 
 

-       function intersection (a1, a2, b1, b2, noEndpointTouch) {
-         // The algorithm expects our lines in the form P + sd, where P is a point,
-         // s is on the interval [0, 1], and d is a vector.
-         // We are passed two points. P can be the first point of each pair. The
-         // vector, then, could be thought of as the distance (in x and y components)
-         // from the first point to the second point.
-         // So first, let's make our vectors:
-         var va = [a2[0] - a1[0], a2[1] - a1[1]];
-         var vb = [b2[0] - b1[0], b2[1] - b1[1]]; // We also define a function to convert back to regular point form:
-
-         /* eslint-disable arrow-body-style */
+         /**
+          * Add this point's x & y coordinates to another point,
+          * yielding a new point.
+          * @param {Point} p the other point
+          * @return {Point} output point
+          */
+         add: function add(p) {
+           return this.clone()._add(p);
+         },

 
 

-         function toPoint(p, s, d) {
-           return [p[0] + s * d[0], p[1] + s * d[1]];
-         }
-         /* eslint-enable arrow-body-style */
-         // The rest is pretty much a straight port of the algorithm.
+         /**
+          * Subtract this point's x & y coordinates to from point,
+          * yielding a new point.
+          * @param {Point} p the other point
+          * @return {Point} output point
+          */
+         sub: function sub(p) {
+           return this.clone()._sub(p);
+         },

 
 

+         /**
+          * Multiply this point's x & y coordinates by point,
+          * yielding a new point.
+          * @param {Point} p the other point
+          * @return {Point} output point
+          */
+         multByPoint: function multByPoint(p) {
+           return this.clone()._multByPoint(p);
+         },

 
 

-         var e = [b1[0] - a1[0], b1[1] - a1[1]];
-         var kross = crossProduct(va, vb);
-         var sqrKross = kross * kross;
-         var sqrLenA = dotProduct(va, va); //const sqrLenB  = dotProduct(vb, vb);
-         // Check for line intersection. This works because of the properties of the
-         // cross product -- specifically, two vectors are parallel if and only if the
-         // cross product is the 0 vector. The full calculation involves relative error
-         // to account for possible very small line segments. See Schneider & Eberly
-         // for details.
+         /**
+          * Divide this point's x & y coordinates by point,
+          * yielding a new point.
+          * @param {Point} p the other point
+          * @return {Point} output point
+          */
+         divByPoint: function divByPoint(p) {
+           return this.clone()._divByPoint(p);
+         },

 
 

-         if (sqrKross > 0
-         /* EPS * sqrLenB * sqLenA */
-         ) {
-             // If they're not parallel, then (because these are line segments) they
-             // still might not actually intersect. This code checks that the
-             // intersection point of the lines is actually on both line segments.
-             var s = crossProduct(e, vb) / kross;
+         /**
+          * Multiply this point's x & y coordinates by a factor,
+          * yielding a new point.
+          * @param {Point} k factor
+          * @return {Point} output point
+          */
+         mult: function mult(k) {
+           return this.clone()._mult(k);
+         },

 
 

-             if (s < 0 || s > 1) {
-               // not on line segment a
-               return null;
-             }
+         /**
+          * Divide this point's x & y coordinates by a factor,
+          * yielding a new point.
+          * @param {Point} k factor
+          * @return {Point} output point
+          */
+         div: function div(k) {
+           return this.clone()._div(k);
+         },

 
 

-             var t = crossProduct(e, va) / kross;
+         /**
+          * Rotate this point around the 0, 0 origin by an angle a,
+          * given in radians
+          * @param {Number} a angle to rotate around, in radians
+          * @return {Point} output point
+          */
+         rotate: function rotate(a) {
+           return this.clone()._rotate(a);
+         },

 
 

-             if (t < 0 || t > 1) {
-               // not on line segment b
-               return null;
-             }
+         /**
+          * Rotate this point around p point by an angle a,
+          * given in radians
+          * @param {Number} a angle to rotate around, in radians
+          * @param {Point} p Point to rotate around
+          * @return {Point} output point
+          */
+         rotateAround: function rotateAround(a, p) {
+           return this.clone()._rotateAround(a, p);
+         },

 
 

-             if (s === 0 || s === 1) {
-               // on an endpoint of line segment a
-               return noEndpointTouch ? null : [toPoint(a1, s, va)];
-             }
+         /**
+          * Multiply this point by a 4x1 transformation matrix
+          * @param {Array<Number>} m transformation matrix
+          * @return {Point} output point
+          */
+         matMult: function matMult(m) {
+           return this.clone()._matMult(m);
+         },

 
 

-             if (t === 0 || t === 1) {
-               // on an endpoint of line segment b
-               return noEndpointTouch ? null : [toPoint(b1, t, vb)];
-             }
+         /**
+          * Calculate this point but as a unit vector from 0, 0, meaning
+          * that the distance from the resulting point to the 0, 0
+          * coordinate will be equal to 1 and the angle from the resulting
+          * point to the 0, 0 coordinate will be the same as before.
+          * @return {Point} unit vector point
+          */
+         unit: function unit() {
+           return this.clone()._unit();
+         },

 
 

-             return [toPoint(a1, s, va)];
-           } // If we've reached this point, then the lines are either parallel or the
-         // same, but the segments could overlap partially or fully, or not at all.
-         // So we need to find the overlap, if any. To do that, we can use e, which is
-         // the (vector) difference between the two initial points. If this is parallel
-         // with the line itself, then the two lines are the same line, and there will
-         // be overlap.
-         //const sqrLenE = dotProduct(e, e);
+         /**
+          * Compute a perpendicular point, where the new y coordinate
+          * is the old x coordinate and the new x coordinate is the old y
+          * coordinate multiplied by -1
+          * @return {Point} perpendicular point
+          */
+         perp: function perp() {
+           return this.clone()._perp();
+         },

 
 

+         /**
+          * Return a version of this point with the x & y coordinates
+          * rounded to integers.
+          * @return {Point} rounded point
+          */
+         round: function round() {
+           return this.clone()._round();
+         },

 
 

-         kross = crossProduct(e, va);
-         sqrKross = kross * kross;
+         /**
+          * Return the magitude of this point: this is the Euclidean
+          * distance from the 0, 0 coordinate to this point's x and y
+          * coordinates.
+          * @return {Number} magnitude
+          */
+         mag: function mag() {
+           return Math.sqrt(this.x * this.x + this.y * this.y);
+         },

 
 

-         if (sqrKross > 0
-         /* EPS * sqLenB * sqLenE */
-         ) {
-             // Lines are just parallel, not the same. No overlap.
-             return null;
-           }
+         /**
+          * Judge whether this point is equal to another point, returning
+          * true or false.
+          * @param {Point} other the other point
+          * @return {boolean} whether the points are equal
+          */
+         equals: function equals(other) {
+           return this.x === other.x && this.y === other.y;
+         },

 
 

-         var sa = dotProduct(va, e) / sqrLenA;
-         var sb = sa + dotProduct(va, vb) / sqrLenA;
-         var smin = Math.min(sa, sb);
-         var smax = Math.max(sa, sb); // this is, essentially, the FindIntersection acting on floats from
-         // Schneider & Eberly, just inlined into this function.
+         /**
+          * Calculate the distance from this point to another point
+          * @param {Point} p the other point
+          * @return {Number} distance
+          */
+         dist: function dist(p) {
+           return Math.sqrt(this.distSqr(p));
+         },

 
 

-         if (smin <= 1 && smax >= 0) {
-           // overlap on an end point
-           if (smin === 1) {
-             return noEndpointTouch ? null : [toPoint(a1, smin > 0 ? smin : 0, va)];
-           }
+         /**
+          * Calculate the distance from this point to another point,
+          * without the square root step. Useful if you're comparing
+          * relative distances.
+          * @param {Point} p the other point
+          * @return {Number} distance
+          */
+         distSqr: function distSqr(p) {
+           var dx = p.x - this.x,
+               dy = p.y - this.y;
+           return dx * dx + dy * dy;
+         },

 
 

-           if (smax === 0) {
-             return noEndpointTouch ? null : [toPoint(a1, smax < 1 ? smax : 1, va)];
-           }
+         /**
+          * Get the angle from the 0, 0 coordinate to this point, in radians
+          * coordinates.
+          * @return {Number} angle
+          */
+         angle: function angle() {
+           return Math.atan2(this.y, this.x);
+         },

 
 

-           if (noEndpointTouch && smin === 0 && smax === 1) return null; // There's overlap on a segment -- two points of intersection. Return both.
+         /**
+          * Get the angle from this point to another point, in radians
+          * @param {Point} b the other point
+          * @return {Number} angle
+          */
+         angleTo: function angleTo(b) {
+           return Math.atan2(this.y - b.y, this.x - b.x);
+         },

 
 

-           return [toPoint(a1, smin > 0 ? smin : 0, va), toPoint(a1, smax < 1 ? smax : 1, va)];
-         }
+         /**
+          * Get the angle between this point and another point, in radians
+          * @param {Point} b the other point
+          * @return {Number} angle
+          */
+         angleWith: function angleWith(b) {
+           return this.angleWithSep(b.x, b.y);
+         },

 
 

-         return null;
-       }
+         /*
+          * Find the angle of the two vectors, solving the formula for
+          * the cross product a x b = |a||b|sin(θ) for θ.
+          * @param {Number} x the x-coordinate
+          * @param {Number} y the y-coordinate
+          * @return {Number} the angle in radians
+          */
+         angleWithSep: function angleWithSep(x, y) {
+           return Math.atan2(this.x * y - this.y * x, this.x * x + this.y * y);
+         },
+         _matMult: function _matMult(m) {
+           var x = m[0] * this.x + m[1] * this.y,
+               y = m[2] * this.x + m[3] * this.y;
+           this.x = x;
+           this.y = y;
+           return this;
+         },
+         _add: function _add(p) {
+           this.x += p.x;
+           this.y += p.y;
+           return this;
+         },
+         _sub: function _sub(p) {
+           this.x -= p.x;
+           this.y -= p.y;
+           return this;
+         },
+         _mult: function _mult(k) {
+           this.x *= k;
+           this.y *= k;
+           return this;
+         },
+         _div: function _div(k) {
+           this.x /= k;
+           this.y /= k;
+           return this;
+         },
+         _multByPoint: function _multByPoint(p) {
+           this.x *= p.x;
+           this.y *= p.y;
+           return this;
+         },
+         _divByPoint: function _divByPoint(p) {
+           this.x /= p.x;
+           this.y /= p.y;
+           return this;
+         },
+         _unit: function _unit() {
+           this._div(this.mag());

 
 

+           return this;
+         },
+         _perp: function _perp() {
+           var y = this.y;
+           this.y = this.x;
+           this.x = -y;
+           return this;
+         },
+         _rotate: function _rotate(angle) {
+           var cos = Math.cos(angle),
+               sin = Math.sin(angle),
+               x = cos * this.x - sin * this.y,
+               y = sin * this.x + cos * this.y;
+           this.x = x;
+           this.y = y;
+           return this;
+         },
+         _rotateAround: function _rotateAround(angle, p) {
+           var cos = Math.cos(angle),
+               sin = Math.sin(angle),
+               x = p.x + cos * (this.x - p.x) - sin * (this.y - p.y),
+               y = p.y + sin * (this.x - p.x) + cos * (this.y - p.y);
+           this.x = x;
+           this.y = y;
+           return this;
+         },
+         _round: function _round() {
+           this.x = Math.round(this.x);
+           this.y = Math.round(this.y);
+           return this;
+         }
+       };

        /**
        /**

-        * @param  {SweepEvent} se1
-        * @param  {SweepEvent} se2
-        * @param  {Queue}      queue
-        * @return {Number}
+        * Construct a point from an array if necessary, otherwise if the input
+        * is already a Point, or an unknown type, return it unchanged
+        * @param {Array<Number>|Point|*} a any kind of input value
+        * @return {Point} constructed point, or passed-through value.
+        * @example
+        * // this
+        * var point = Point.convert([0, 1]);
+        * // is equivalent to
+        * var point = new Point(0, 1);

         */
 
         */
 

-       function possibleIntersection(se1, se2, queue) {
-         // that disallows self-intersecting polygons,
-         // did cost us half a day, so I'll leave it
-         // out of respect
-         // if (se1.isSubject === se2.isSubject) return;
-         var inter = intersection(se1.point, se1.otherEvent.point, se2.point, se2.otherEvent.point);
-         var nintersections = inter ? inter.length : 0;
-         if (nintersections === 0) return 0; // no intersection
-         // the line segments intersect at an endpoint of both line segments
-
-         if (nintersections === 1 && (equals(se1.point, se2.point) || equals(se1.otherEvent.point, se2.otherEvent.point))) {
-           return 0;
-         }
-
-         if (nintersections === 2 && se1.isSubject === se2.isSubject) {
-           // if(se1.contourId === se2.contourId){
-           // console.warn('Edges of the same polygon overlap',
-           //   se1.point, se1.otherEvent.point, se2.point, se2.otherEvent.point);
-           // }
-           //throw new Error('Edges of the same polygon overlap');
-           return 0;
-         } // The line segments associated to se1 and se2 intersect
-
-
-         if (nintersections === 1) {
-           // if the intersection point is not an endpoint of se1
-           if (!equals(se1.point, inter[0]) && !equals(se1.otherEvent.point, inter[0])) {
-             divideSegment(se1, inter[0], queue);
-           } // if the intersection point is not an endpoint of se2
-
-
-           if (!equals(se2.point, inter[0]) && !equals(se2.otherEvent.point, inter[0])) {
-             divideSegment(se2, inter[0], queue);
-           }
-
-           return 1;
-         } // The line segments associated to se1 and se2 overlap
-
-
-         var events = [];
-         var leftCoincide = false;
-         var rightCoincide = false;
-
-         if (equals(se1.point, se2.point)) {
-           leftCoincide = true; // linked
-         } else if (compareEvents(se1, se2) === 1) {
-           events.push(se2, se1);
-         } else {
-           events.push(se1, se2);
+       Point$1.convert = function (a) {
+         if (a instanceof Point$1) {
+           return a;

          }
 
          }
 

-         if (equals(se1.otherEvent.point, se2.otherEvent.point)) {
-           rightCoincide = true;
-         } else if (compareEvents(se1.otherEvent, se2.otherEvent) === 1) {
-           events.push(se2.otherEvent, se1.otherEvent);
-         } else {
-           events.push(se1.otherEvent, se2.otherEvent);
+         if (Array.isArray(a)) {
+           return new Point$1(a[0], a[1]);

          }
 
          }
 

-         if (leftCoincide && rightCoincide || leftCoincide) {
-           // both line segments are equal or share the left endpoint
-           se2.type = NON_CONTRIBUTING;
-           se1.type = se2.inOut === se1.inOut ? SAME_TRANSITION : DIFFERENT_TRANSITION;
-
-           if (leftCoincide && !rightCoincide) {
-             // honestly no idea, but changing events selection from [2, 1]
-             // to [0, 1] fixes the overlapping self-intersecting polygons issue
-             divideSegment(events[1].otherEvent, events[0].point, queue);
-           }
-
-           return 2;
-         } // the line segments share the right endpoint
-
-
-         if (rightCoincide) {
-           divideSegment(events[0], events[1].point, queue);
-           return 3;
-         } // no line segment includes totally the other one
-
+         return a;
+       };

 
 

-         if (events[0] !== events[3].otherEvent) {
-           divideSegment(events[0], events[1].point, queue);
-           divideSegment(events[1], events[2].point, queue);
-           return 3;
-         } // one line segment includes the other one
+       var Point = pointGeometry;
+       var vectortilefeature = VectorTileFeature$1;

 
 

+       function VectorTileFeature$1(pbf, end, extent, keys, values) {
+         // Public
+         this.properties = {};
+         this.extent = extent;
+         this.type = 0; // Private

 
 

-         divideSegment(events[0], events[1].point, queue);
-         divideSegment(events[3].otherEvent, events[2].point, queue);
-         return 3;
+         this._pbf = pbf;
+         this._geometry = -1;
+         this._keys = keys;
+         this._values = values;
+         pbf.readFields(readFeature, this, end);

        }
 
        }
 

-       /**
-        * @param  {SweepEvent} le1
-        * @param  {SweepEvent} le2
-        * @return {Number}
-        */
-
-       function compareSegments(le1, le2) {
-         if (le1 === le2) return 0; // Segments are not collinear
-
-         if (signedArea(le1.point, le1.otherEvent.point, le2.point) !== 0 || signedArea(le1.point, le1.otherEvent.point, le2.otherEvent.point) !== 0) {
-           // If they share their left endpoint use the right endpoint to sort
-           if (equals(le1.point, le2.point)) return le1.isBelow(le2.otherEvent.point) ? -1 : 1; // Different left endpoint: use the left endpoint to sort
-
-           if (le1.point[0] === le2.point[0]) return le1.point[1] < le2.point[1] ? -1 : 1; // has the line segment associated to e1 been inserted
-           // into S after the line segment associated to e2 ?
-
-           if (compareEvents(le1, le2) === 1) return le2.isAbove(le1.point) ? -1 : 1; // The line segment associated to e2 has been inserted
-           // into S after the line segment associated to e1
+       function readFeature(tag, feature, pbf) {
+         if (tag == 1) feature.id = pbf.readVarint();else if (tag == 2) readTag(pbf, feature);else if (tag == 3) feature.type = pbf.readVarint();else if (tag == 4) feature._geometry = pbf.pos;
+       }

 
 

-           return le1.isBelow(le2.point) ? -1 : 1;
-         }
+       function readTag(pbf, feature) {
+         var end = pbf.readVarint() + pbf.pos;

 
 

-         if (le1.isSubject === le2.isSubject) {
-           // same polygon
-           var p1 = le1.point,
-               p2 = le2.point;
+         while (pbf.pos < end) {
+           var key = feature._keys[pbf.readVarint()],
+               value = feature._values[pbf.readVarint()];

 
 

-           if (p1[0] === p2[0] && p1[1] === p2[1]
-           /*equals(le1.point, le2.point)*/
-           ) {
-               p1 = le1.otherEvent.point;
-               p2 = le2.otherEvent.point;
-               if (p1[0] === p2[0] && p1[1] === p2[1]) return 0;else return le1.contourId > le2.contourId ? 1 : -1;
-             }
-         } else {
-           // Segments are collinear, but belong to separate polygons
-           return le1.isSubject ? -1 : 1;
+           feature.properties[key] = value;

          }
          }

-
-         return compareEvents(le1, le2) === 1 ? 1 : -1;

        }
 
        }
 

-       function subdivide(eventQueue, subject, clipping, sbbox, cbbox, operation) {
-         var sweepLine = new SplayTree(compareSegments);
-         var sortedEvents = [];
-         var rightbound = Math.min(sbbox[2], cbbox[2]);
-         var prev, next, begin;
+       VectorTileFeature$1.types = ['Unknown', 'Point', 'LineString', 'Polygon'];

 
 

-         while (eventQueue.length !== 0) {
-           var event = eventQueue.pop();
-           sortedEvents.push(event); // optimization by bboxes for intersection and difference goes here
+       VectorTileFeature$1.prototype.loadGeometry = function () {
+         var pbf = this._pbf;
+         pbf.pos = this._geometry;
+         var end = pbf.readVarint() + pbf.pos,
+             cmd = 1,
+             length = 0,
+             x = 0,
+             y = 0,
+             lines = [],
+             line;

 
 

-           if (operation === INTERSECTION && event.point[0] > rightbound || operation === DIFFERENCE && event.point[0] > sbbox[2]) {
-             break;
+         while (pbf.pos < end) {
+           if (length <= 0) {
+             var cmdLen = pbf.readVarint();
+             cmd = cmdLen & 0x7;
+             length = cmdLen >> 3;

            }
 
            }
 

-           if (event.left) {
-             next = prev = sweepLine.insert(event);
-             begin = sweepLine.minNode();
-             if (prev !== begin) prev = sweepLine.prev(prev);else prev = null;
-             next = sweepLine.next(next);
-             var prevEvent = prev ? prev.key : null;
-             var prevprevEvent = void 0;
-             computeFields(event, prevEvent, operation);
+           length--;

 
 

-             if (next) {
-               if (possibleIntersection(event, next.key, eventQueue) === 2) {
-                 computeFields(event, prevEvent, operation);
-                 computeFields(event, next.key, operation);
-               }
-             }
+           if (cmd === 1 || cmd === 2) {
+             x += pbf.readSVarint();
+             y += pbf.readSVarint();

 
 

-             if (prev) {
-               if (possibleIntersection(prev.key, event, eventQueue) === 2) {
-                 var prevprev = prev;
-                 if (prevprev !== begin) prevprev = sweepLine.prev(prevprev);else prevprev = null;
-                 prevprevEvent = prevprev ? prevprev.key : null;
-                 computeFields(prevEvent, prevprevEvent, operation);
-                 computeFields(event, prevEvent, operation);
-               }
+             if (cmd === 1) {
+               // moveTo
+               if (line) lines.push(line);
+               line = [];

              }
              }

-           } else {
-             event = event.otherEvent;
-             next = prev = sweepLine.find(event);

 
 

-             if (prev && next) {
-               if (prev !== begin) prev = sweepLine.prev(prev);else prev = null;
-               next = sweepLine.next(next);
-               sweepLine.remove(event);
-
-               if (next && prev) {
-                 possibleIntersection(prev.key, next.key, eventQueue);
-               }
+             line.push(new Point(x, y));
+           } else if (cmd === 7) {
+             // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
+             if (line) {
+               line.push(line[0].clone()); // closePolygon

              }
              }

+           } else {
+             throw new Error('unknown command ' + cmd);

            }
          }
 
            }
          }
 

-         return sortedEvents;
-       }
-
-       var Contour = /*#__PURE__*/function () {
-         /**
-          * Contour
-          *
-          * @class {Contour}
-          */
-         function Contour() {
-           _classCallCheck(this, Contour);
+         if (line) lines.push(line);
+         return lines;
+       };

 
 

-           this.points = [];
-           this.holeIds = [];
-           this.holeOf = null;
-           this.depth = null;
-         }
+       VectorTileFeature$1.prototype.bbox = function () {
+         var pbf = this._pbf;
+         pbf.pos = this._geometry;
+         var end = pbf.readVarint() + pbf.pos,
+             cmd = 1,
+             length = 0,
+             x = 0,
+             y = 0,
+             x1 = Infinity,
+             x2 = -Infinity,
+             y1 = Infinity,
+             y2 = -Infinity;

 
 

-         _createClass(Contour, [{
-           key: "isExterior",
-           value: function isExterior() {
-             return this.holeOf == null;
+         while (pbf.pos < end) {
+           if (length <= 0) {
+             var cmdLen = pbf.readVarint();
+             cmd = cmdLen & 0x7;
+             length = cmdLen >> 3;

            }
            }

-         }]);
-
-         return Contour;
-       }();

 
 

-       /**
-        * @param  {Array.<SweepEvent>} sortedEvents
-        * @return {Array.<SweepEvent>}
-        */
-
-       function orderEvents(sortedEvents) {
-         var event, i, len, tmp;
-         var resultEvents = [];
-
-         for (i = 0, len = sortedEvents.length; i < len; i++) {
-           event = sortedEvents[i];
+           length--;

 
 

-           if (event.left && event.inResult || !event.left && event.otherEvent.inResult) {
-             resultEvents.push(event);
+           if (cmd === 1 || cmd === 2) {
+             x += pbf.readSVarint();
+             y += pbf.readSVarint();
+             if (x < x1) x1 = x;
+             if (x > x2) x2 = x;
+             if (y < y1) y1 = y;
+             if (y > y2) y2 = y;
+           } else if (cmd !== 7) {
+             throw new Error('unknown command ' + cmd);

            }
            }

-         } // Due to overlapping edges the resultEvents array can be not wholly sorted
-
+         }

 
 

-         var sorted = false;
+         return [x1, y1, x2, y2];
+       };

 
 

-         while (!sorted) {
-           sorted = true;
+       VectorTileFeature$1.prototype.toGeoJSON = function (x, y, z) {
+         var size = this.extent * Math.pow(2, z),
+             x0 = this.extent * x,
+             y0 = this.extent * y,
+             coords = this.loadGeometry(),
+             type = VectorTileFeature$1.types[this.type],
+             i,
+             j;

 
 

-           for (i = 0, len = resultEvents.length; i < len; i++) {
-             if (i + 1 < len && compareEvents(resultEvents[i], resultEvents[i + 1]) === 1) {
-               tmp = resultEvents[i];
-               resultEvents[i] = resultEvents[i + 1];
-               resultEvents[i + 1] = tmp;
-               sorted = false;
-             }
+         function project(line) {
+           for (var j = 0; j < line.length; j++) {
+             var p = line[j],
+                 y2 = 180 - (p.y + y0) * 360 / size;
+             line[j] = [(p.x + x0) * 360 / size - 180, 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90];

            }
          }
 
            }
          }
 

-         for (i = 0, len = resultEvents.length; i < len; i++) {
-           event = resultEvents[i];
-           event.otherPos = i;
-         } // imagine, the right event is found in the beginning of the queue,
-         // when his left counterpart is not marked yet
+         switch (this.type) {
+           case 1:
+             var points = [];

 
 

+             for (i = 0; i < coords.length; i++) {
+               points[i] = coords[i][0];
+             }

 
 

-         for (i = 0, len = resultEvents.length; i < len; i++) {
-           event = resultEvents[i];
+             coords = points;
+             project(coords);
+             break;

 
 

-           if (!event.left) {
-             tmp = event.otherPos;
-             event.otherPos = event.otherEvent.otherPos;
-             event.otherEvent.otherPos = tmp;
-           }
-         }
+           case 2:
+             for (i = 0; i < coords.length; i++) {
+               project(coords[i]);
+             }

 
 

-         return resultEvents;
-       }
-       /**
-        * @param  {Number} pos
-        * @param  {Array.<SweepEvent>} resultEvents
-        * @param  {Object>}    processed
-        * @return {Number}
-        */
+             break;

 
 

+           case 3:
+             coords = classifyRings(coords);

 
 

-       function nextPos(pos, resultEvents, processed, origPos) {
-         var newPos = pos + 1,
-             p = resultEvents[pos].point,
-             p1;
-         var length = resultEvents.length;
-         if (newPos < length) p1 = resultEvents[newPos].point;
+             for (i = 0; i < coords.length; i++) {
+               for (j = 0; j < coords[i].length; j++) {
+                 project(coords[i][j]);
+               }
+             }

 
 

-         while (newPos < length && p1[0] === p[0] && p1[1] === p[1]) {
-           if (!processed[newPos]) {
-             return newPos;
-           } else {
-             newPos++;
-           }
+             break;
+         }

 
 

-           p1 = resultEvents[newPos].point;
+         if (coords.length === 1) {
+           coords = coords[0];
+         } else {
+           type = 'Multi' + type;

          }
 
          }
 

-         newPos = pos - 1;
+         var result = {
+           type: "Feature",
+           geometry: {
+             type: type,
+             coordinates: coords
+           },
+           properties: this.properties
+         };

 
 

-         while (processed[newPos] && newPos > origPos) {
-           newPos--;
+         if ('id' in this) {
+           result.id = this.id;

          }
 
          }
 

-         return newPos;
-       }
-
-       function initializeContourFromContext(event, contours, contourId) {
-         var contour = new Contour();
+         return result;
+       }; // classifies an array of rings into polygons with outer rings and holes

 
 

-         if (event.prevInResult != null) {
-           var prevInResult = event.prevInResult; // Note that it is valid to query the "previous in result" for its output contour id,
-           // because we must have already processed it (i.e., assigned an output contour id)
-           // in an earlier iteration, otherwise it wouldn't be possible that it is "previous in
-           // result".

 
 

-           var lowerContourId = prevInResult.outputContourId;
-           var lowerResultTransition = prevInResult.resultTransition;
+       function classifyRings(rings) {
+         var len = rings.length;
+         if (len <= 1) return [rings];
+         var polygons = [],
+             polygon,
+             ccw;

 
 

-           if (lowerResultTransition > 0) {
-             // We are inside. Now we have to check if the thing below us is another hole or
-             // an exterior contour.
-             var lowerContour = contours[lowerContourId];
+         for (var i = 0; i < len; i++) {
+           var area = signedArea(rings[i]);
+           if (area === 0) continue;
+           if (ccw === undefined) ccw = area < 0;

 
 

-             if (lowerContour.holeOf != null) {
-               // The lower contour is a hole => Connect the new contour as a hole to its parent,
-               // and use same depth.
-               var parentContourId = lowerContour.holeOf;
-               contours[parentContourId].holeIds.push(contourId);
-               contour.holeOf = parentContourId;
-               contour.depth = contours[lowerContourId].depth;
-             } else {
-               // The lower contour is an exterior contour => Connect the new contour as a hole,
-               // and increment depth.
-               contours[lowerContourId].holeIds.push(contourId);
-               contour.holeOf = lowerContourId;
-               contour.depth = contours[lowerContourId].depth + 1;
-             }
+           if (ccw === area < 0) {
+             if (polygon) polygons.push(polygon);
+             polygon = [rings[i]];

            } else {
            } else {

-             // We are outside => this contour is an exterior contour of same depth.
-             contour.holeOf = null;
-             contour.depth = contours[lowerContourId].depth;
+             polygon.push(rings[i]);

            }
            }

-         } else {
-           // There is no lower/previous contour => this contour is an exterior contour of depth 0.
-           contour.holeOf = null;
-           contour.depth = 0;

          }
 
          }
 

-         return contour;
+         if (polygon) polygons.push(polygon);
+         return polygons;

        }
        }

-       /**
-        * @param  {Array.<SweepEvent>} sortedEvents
-        * @return {Array.<*>} polygons
-        */
-
-
-       function connectEdges(sortedEvents) {
-         var i, len;
-         var resultEvents = orderEvents(sortedEvents); // "false"-filled array
-
-         var processed = {};
-         var contours = [];
-
-         var _loop = function _loop() {
-           if (processed[i]) {
-             return "continue";
-           }
-
-           var contourId = contours.length;
-           var contour = initializeContourFromContext(resultEvents[i], contours, contourId); // Helper function that combines marking an event as processed with assigning its output contour ID

 
 

-           var markAsProcessed = function markAsProcessed(pos) {
-             processed[pos] = true;
-             resultEvents[pos].outputContourId = contourId;
-           };
-
-           var pos = i;
-           var origPos = i;
-           var initial = resultEvents[i].point;
-           contour.points.push(initial);
-           /* eslint no-constant-condition: "off" */
-
-           while (true) {
-             markAsProcessed(pos);
-             pos = resultEvents[pos].otherPos;
-             markAsProcessed(pos);
-             contour.points.push(resultEvents[pos].point);
-             pos = nextPos(pos, resultEvents, processed, origPos);
-
-             if (pos == origPos) {
-               break;
-             }
-           }
-
-           contours.push(contour);
-         };
-
-         for (i = 0, len = resultEvents.length; i < len; i++) {
-           var _ret = _loop();
+       function signedArea(ring) {
+         var sum = 0;

 
 

-           if (_ret === "continue") continue;
+         for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
+           p1 = ring[i];
+           p2 = ring[j];
+           sum += (p2.x - p1.x) * (p1.y + p2.y);

          }
 
          }
 

-         return contours;
+         return sum;

        }
 
        }
 

-       var tinyqueue = TinyQueue;
-       var _default$1 = TinyQueue;
+       var VectorTileFeature = vectortilefeature;
+       var vectortilelayer = VectorTileLayer$1;

 
 

-       function TinyQueue(data, compare) {
-         if (!(this instanceof TinyQueue)) return new TinyQueue(data, compare);
-         this.data = data || [];
-         this.length = this.data.length;
-         this.compare = compare || defaultCompare$1;
+       function VectorTileLayer$1(pbf, end) {
+         // Public
+         this.version = 1;
+         this.name = null;
+         this.extent = 4096;
+         this.length = 0; // Private

 
 

-         if (this.length > 0) {
-           for (var i = (this.length >> 1) - 1; i >= 0; i--) {
-             this._down(i);
-           }
-         }
+         this._pbf = pbf;
+         this._keys = [];
+         this._values = [];
+         this._features = [];
+         pbf.readFields(readLayer, this, end);
+         this.length = this._features.length;

        }
 
        }
 

-       function defaultCompare$1(a, b) {
-         return a < b ? -1 : a > b ? 1 : 0;
+       function readLayer(tag, layer, pbf) {
+         if (tag === 15) layer.version = pbf.readVarint();else if (tag === 1) layer.name = pbf.readString();else if (tag === 5) layer.extent = pbf.readVarint();else if (tag === 2) layer._features.push(pbf.pos);else if (tag === 3) layer._keys.push(pbf.readString());else if (tag === 4) layer._values.push(readValueMessage(pbf));

        }
 
        }
 

-       TinyQueue.prototype = {
-         push: function push(item) {
-           this.data.push(item);
-           this.length++;
-
-           this._up(this.length - 1);
-         },
-         pop: function pop() {
-           if (this.length === 0) return undefined;
-           var top = this.data[0];
-           this.length--;
+       function readValueMessage(pbf) {
+         var value = null,
+             end = pbf.readVarint() + pbf.pos;

 
 

-           if (this.length > 0) {
-             this.data[0] = this.data[this.length];
+         while (pbf.pos < end) {
+           var tag = pbf.readVarint() >> 3;
+           value = tag === 1 ? pbf.readString() : tag === 2 ? pbf.readFloat() : tag === 3 ? pbf.readDouble() : tag === 4 ? pbf.readVarint64() : tag === 5 ? pbf.readVarint() : tag === 6 ? pbf.readSVarint() : tag === 7 ? pbf.readBoolean() : null;
+         }

 
 

-             this._down(0);
-           }
+         return value;
+       } // return feature `i` from this layer as a `VectorTileFeature`

 
 

-           this.data.pop();
-           return top;
-         },
-         peek: function peek() {
-           return this.data[0];
-         },
-         _up: function _up(pos) {
-           var data = this.data;
-           var compare = this.compare;
-           var item = data[pos];

 
 

-           while (pos > 0) {
-             var parent = pos - 1 >> 1;
-             var current = data[parent];
-             if (compare(item, current) >= 0) break;
-             data[pos] = current;
-             pos = parent;
-           }
+       VectorTileLayer$1.prototype.feature = function (i) {
+         if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
+         this._pbf.pos = this._features[i];

 
 

-           data[pos] = item;
-         },
-         _down: function _down(pos) {
-           var data = this.data;
-           var compare = this.compare;
-           var halfLength = this.length >> 1;
-           var item = data[pos];
+         var end = this._pbf.readVarint() + this._pbf.pos;

 
 

-           while (pos < halfLength) {
-             var left = (pos << 1) + 1;
-             var right = left + 1;
-             var best = data[left];
+         return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
+       };

 
 

-             if (right < this.length && compare(data[right], best) < 0) {
-               left = right;
-               best = data[right];
-             }
+       var VectorTileLayer = vectortilelayer;
+       var vectortile = VectorTile$1;

 
 

-             if (compare(best, item) >= 0) break;
-             data[pos] = best;
-             pos = left;
-           }
+       function VectorTile$1(pbf, end) {
+         this.layers = pbf.readFields(readTile, {}, end);
+       }

 
 

-           data[pos] = item;
+       function readTile(tag, layers, pbf) {
+         if (tag === 3) {
+           var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
+           if (layer.length) layers[layer.name] = layer;

          }
          }

-       };
-       tinyqueue["default"] = _default$1;
-
-       var max$5 = Math.max;
-       var min$a = Math.min;
-       var contourId = 0;
+       }

 
 

-       function processPolygon(contourOrHole, isSubject, depth, Q, bbox, isExteriorRing) {
-         var i, len, s1, s2, e1, e2;
+       var VectorTile = vectorTile.VectorTile = vectortile;
+       vectorTile.VectorTileFeature = vectortilefeature;
+       vectorTile.VectorTileLayer = vectortilelayer;

 
 

-         for (i = 0, len = contourOrHole.length - 1; i < len; i++) {
-           s1 = contourOrHole[i];
-           s2 = contourOrHole[i + 1];
-           e1 = new SweepEvent(s1, false, undefined, isSubject);
-           e2 = new SweepEvent(s2, false, e1, isSubject);
-           e1.otherEvent = e2;
+       var accessToken = 'MLY|4100327730013843|5bb78b81720791946a9a7b956c57b7cf';
+       var apiUrl = 'https://graph.mapillary.com/';
+       var baseTileUrl = 'https://tiles.mapillary.com/maps/vtp';
+       var mapFeatureTileUrl = "".concat(baseTileUrl, "/mly_map_feature_point/2/{z}/{x}/{y}?access_token=").concat(accessToken);
+       var tileUrl = "".concat(baseTileUrl, "/mly1_public/2/{z}/{x}/{y}?access_token=").concat(accessToken);
+       var trafficSignTileUrl = "".concat(baseTileUrl, "/mly_map_feature_traffic_sign/2/{z}/{x}/{y}?access_token=").concat(accessToken);
+       var viewercss = 'mapillary-js/mapillary.css';
+       var viewerjs = 'mapillary-js/mapillary.js';
+       var minZoom$1 = 14;
+       var dispatch$4 = dispatch$8('change', 'loadedImages', 'loadedSigns', 'loadedMapFeatures', 'bearingChanged', 'imageChanged');

 
 

-           if (s1[0] === s2[0] && s1[1] === s2[1]) {
-             continue; // skip collapsed edges, or it breaks
-           }
+       var _loadViewerPromise$2;

 
 

-           e1.contourId = e2.contourId = depth;
+       var _mlyActiveImage;

 
 

-           if (!isExteriorRing) {
-             e1.isExteriorRing = false;
-             e2.isExteriorRing = false;
-           }
+       var _mlyCache;

 
 

-           if (compareEvents(e1, e2) > 0) {
-             e2.left = true;
-           } else {
-             e1.left = true;
-           }
+       var _mlyFallback = false;

 
 

-           var x = s1[0],
-               y = s1[1];
-           bbox[0] = min$a(bbox[0], x);
-           bbox[1] = min$a(bbox[1], y);
-           bbox[2] = max$5(bbox[2], x);
-           bbox[3] = max$5(bbox[3], y); // Pushing it so the queue is sorted from left to right,
-           // with object on the left having the highest priority.
+       var _mlyHighlightedDetection;

 
 

-           Q.push(e1);
-           Q.push(e2);
-         }
-       }
+       var _mlyShowFeatureDetections = false;
+       var _mlyShowSignDetections = false;

 
 

-       function fillQueue(subject, clipping, sbbox, cbbox, operation) {
-         var eventQueue = new tinyqueue(null, compareEvents);
-         var polygonSet, isExteriorRing, i, ii, j, jj; //, k, kk;
+       var _mlyViewer;

 
 

-         for (i = 0, ii = subject.length; i < ii; i++) {
-           polygonSet = subject[i];
+       var _mlyViewerFilter = ['all']; // Load all data for the specified type from Mapillary vector tiles

 
 

-           for (j = 0, jj = polygonSet.length; j < jj; j++) {
-             isExteriorRing = j === 0;
-             if (isExteriorRing) contourId++;
-             processPolygon(polygonSet[j], true, contourId, eventQueue, sbbox, isExteriorRing);
-           }
-         }
+       function loadTiles$2(which, url, maxZoom, projection) {
+         var tiler = utilTiler().zoomExtent([minZoom$1, maxZoom]).skipNullIsland(true);
+         var tiles = tiler.getTiles(projection);
+         tiles.forEach(function (tile) {
+           loadTile$1(which, url, tile);
+         });
+       } // Load all data for the specified type from one vector tile

 
 

-         for (i = 0, ii = clipping.length; i < ii; i++) {
-           polygonSet = clipping[i];

 
 

-           for (j = 0, jj = polygonSet.length; j < jj; j++) {
-             isExteriorRing = j === 0;
-             if (operation === DIFFERENCE) isExteriorRing = false;
-             if (isExteriorRing) contourId++;
-             processPolygon(polygonSet[j], false, contourId, eventQueue, cbbox, isExteriorRing);
+       function loadTile$1(which, url, tile) {
+         var cache = _mlyCache.requests;
+         var tileId = "".concat(tile.id, "-").concat(which);
+         if (cache.loaded[tileId] || cache.inflight[tileId]) return;
+         var controller = new AbortController();
+         cache.inflight[tileId] = controller;
+         var requestUrl = url.replace('{x}', tile.xyz[0]).replace('{y}', tile.xyz[1]).replace('{z}', tile.xyz[2]);
+         fetch(requestUrl, {
+           signal: controller.signal
+         }).then(function (response) {
+           if (!response.ok) {
+             throw new Error(response.status + ' ' + response.statusText);

            }
            }

-         }

 
 

-         return eventQueue;
-       }
-
-       var EMPTY = [];
-
-       function trivialOperation(subject, clipping, operation) {
-         var result = null;
-
-         if (subject.length * clipping.length === 0) {
-           if (operation === INTERSECTION) {
-             result = EMPTY;
-           } else if (operation === DIFFERENCE) {
-             result = subject;
-           } else if (operation === UNION || operation === XOR) {
-             result = subject.length === 0 ? clipping : subject;
+           cache.loaded[tileId] = true;
+           delete cache.inflight[tileId];
+           return response.arrayBuffer();
+         }).then(function (data) {
+           if (!data) {
+             throw new Error('No Data');

            }
            }

-         }
-
-         return result;
-       }

 
 

-       function compareBBoxes(subject, clipping, sbbox, cbbox, operation) {
-         var result = null;
+           loadTileDataToCache(data, tile, which);

 
 

-         if (sbbox[0] > cbbox[2] || cbbox[0] > sbbox[2] || sbbox[1] > cbbox[3] || cbbox[1] > sbbox[3]) {
-           if (operation === INTERSECTION) {
-             result = EMPTY;
-           } else if (operation === DIFFERENCE) {
-             result = subject;
-           } else if (operation === UNION || operation === XOR) {
-             result = subject.concat(clipping);
+           if (which === 'images') {
+             dispatch$4.call('loadedImages');
+           } else if (which === 'signs') {
+             dispatch$4.call('loadedSigns');
+           } else if (which === 'points') {
+             dispatch$4.call('loadedMapFeatures');

            }
            }

-         }
+         })["catch"](function () {
+           cache.loaded[tileId] = true;
+           delete cache.inflight[tileId];
+         });
+       } // Load the data from the vector tile into cache

 
 

-         return result;
-       }

 
 

-       function _boolean(subject, clipping, operation) {
-         if (typeof subject[0][0][0] === 'number') {
-           subject = [subject];
-         }
+       function loadTileDataToCache(data, tile, which) {
+         var vectorTile = new VectorTile(new pbf(data));
+         var features, cache, layer, i, feature, loc, d;

 
 

-         if (typeof clipping[0][0][0] === 'number') {
-           clipping = [clipping];
-         }
+         if (vectorTile.layers.hasOwnProperty('image')) {
+           features = [];
+           cache = _mlyCache.images;
+           layer = vectorTile.layers.image;

 
 

-         var trivial = trivialOperation(subject, clipping, operation);
+           for (i = 0; i < layer.length; i++) {
+             feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);
+             loc = feature.geometry.coordinates;
+             d = {
+               loc: loc,
+               captured_at: feature.properties.captured_at,
+               ca: feature.properties.compass_angle,
+               id: feature.properties.id,
+               is_pano: feature.properties.is_pano,
+               sequence_id: feature.properties.sequence_id
+             };
+             cache.forImageId[d.id] = d;
+             features.push({
+               minX: loc[0],
+               minY: loc[1],
+               maxX: loc[0],
+               maxY: loc[1],
+               data: d
+             });
+           }

 
 

-         if (trivial) {
-           return trivial === EMPTY ? null : trivial;
+           if (cache.rtree) {
+             cache.rtree.load(features);
+           }

          }
 
          }
 

-         var sbbox = [Infinity, Infinity, -Infinity, -Infinity];
-         var cbbox = [Infinity, Infinity, -Infinity, -Infinity]; // console.time('fill queue');
-
-         var eventQueue = fillQueue(subject, clipping, sbbox, cbbox, operation); //console.timeEnd('fill queue');
-
-         trivial = compareBBoxes(subject, clipping, sbbox, cbbox, operation);
-
-         if (trivial) {
-           return trivial === EMPTY ? null : trivial;
-         } // console.time('subdivide edges');
-
-
-         var sortedEvents = subdivide(eventQueue, subject, clipping, sbbox, cbbox, operation); //console.timeEnd('subdivide edges');
-         // console.time('connect vertices');
+         if (vectorTile.layers.hasOwnProperty('sequence')) {
+           features = [];
+           cache = _mlyCache.sequences;
+           layer = vectorTile.layers.sequence;

 
 

-         var contours = connectEdges(sortedEvents); //console.timeEnd('connect vertices');
-         // Convert contours to polygons
+           for (i = 0; i < layer.length; i++) {
+             feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);

 
 

-         var polygons = [];
-
-         for (var i = 0; i < contours.length; i++) {
-           var contour = contours[i];
-
-           if (contour.isExterior()) {
-             // The exterior ring goes first
-             var rings = [contour.points]; // Followed by holes if any
-
-             for (var j = 0; j < contour.holeIds.length; j++) {
-               var holeId = contour.holeIds[j];
-               rings.push(contours[holeId].points);
+             if (cache.lineString[feature.properties.id]) {
+               cache.lineString[feature.properties.id].push(feature);
+             } else {
+               cache.lineString[feature.properties.id] = [feature];

              }
              }

-
-             polygons.push(rings);

            }
          }
 
            }
          }
 

-         return polygons;
-       }
-
-       function union(subject, clipping) {
-         return _boolean(subject, clipping, UNION);
-       }
-
-       var read$6 = function read(buffer, offset, isLE, mLen, nBytes) {
-         var e, m;
-         var eLen = nBytes * 8 - mLen - 1;
-         var eMax = (1 << eLen) - 1;
-         var eBias = eMax >> 1;
-         var nBits = -7;
-         var i = isLE ? nBytes - 1 : 0;
-         var d = isLE ? -1 : 1;
-         var s = buffer[offset + i];
-         i += d;
-         e = s & (1 << -nBits) - 1;
-         s >>= -nBits;
-         nBits += eLen;
-
-         for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
-
-         m = e & (1 << -nBits) - 1;
-         e >>= -nBits;
-         nBits += mLen;
+         if (vectorTile.layers.hasOwnProperty('point')) {
+           features = [];
+           cache = _mlyCache[which];
+           layer = vectorTile.layers.point;

 
 

-         for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+           for (i = 0; i < layer.length; i++) {
+             feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);
+             loc = feature.geometry.coordinates;
+             d = {
+               loc: loc,
+               id: feature.properties.id,
+               first_seen_at: feature.properties.first_seen_at,
+               last_seen_at: feature.properties.last_seen_at,
+               value: feature.properties.value
+             };
+             features.push({
+               minX: loc[0],
+               minY: loc[1],
+               maxX: loc[0],
+               maxY: loc[1],
+               data: d
+             });
+           }

 
 

-         if (e === 0) {
-           e = 1 - eBias;
-         } else if (e === eMax) {
-           return m ? NaN : (s ? -1 : 1) * Infinity;
-         } else {
-           m = m + Math.pow(2, mLen);
-           e = e - eBias;
+           if (cache.rtree) {
+             cache.rtree.load(features);
+           }

          }
 
          }
 

-         return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
-       };
-
-       var write$6 = function write(buffer, value, offset, isLE, mLen, nBytes) {
-         var e, m, c;
-         var eLen = nBytes * 8 - mLen - 1;
-         var eMax = (1 << eLen) - 1;
-         var eBias = eMax >> 1;
-         var rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0;
-         var i = isLE ? 0 : nBytes - 1;
-         var d = isLE ? 1 : -1;
-         var s = value < 0 || value === 0 && 1 / value < 0 ? 1 : 0;
-         value = Math.abs(value);
-
-         if (isNaN(value) || value === Infinity) {
-           m = isNaN(value) ? 1 : 0;
-           e = eMax;
-         } else {
-           e = Math.floor(Math.log(value) / Math.LN2);
+         if (vectorTile.layers.hasOwnProperty('traffic_sign')) {
+           features = [];
+           cache = _mlyCache[which];
+           layer = vectorTile.layers.traffic_sign;

 
 

-           if (value * (c = Math.pow(2, -e)) < 1) {
-             e--;
-             c *= 2;
+           for (i = 0; i < layer.length; i++) {
+             feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);
+             loc = feature.geometry.coordinates;
+             d = {
+               loc: loc,
+               id: feature.properties.id,
+               first_seen_at: feature.properties.first_seen_at,
+               last_seen_at: feature.properties.last_seen_at,
+               value: feature.properties.value
+             };
+             features.push({
+               minX: loc[0],
+               minY: loc[1],
+               maxX: loc[0],
+               maxY: loc[1],
+               data: d
+             });

            }
 
            }
 

-           if (e + eBias >= 1) {
-             value += rt / c;
-           } else {
-             value += rt * Math.pow(2, 1 - eBias);
+           if (cache.rtree) {
+             cache.rtree.load(features);

            }
            }

+         }
+       } // Get data from the API

 
 

-           if (value * c >= 2) {
-             e++;
-             c /= 2;
-           }

 
 

-           if (e + eBias >= eMax) {
-             m = 0;
-             e = eMax;
-           } else if (e + eBias >= 1) {
-             m = (value * c - 1) * Math.pow(2, mLen);
-             e = e + eBias;
-           } else {
-             m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
-             e = 0;
+       function loadData(url) {
+         return fetch(url).then(function (response) {
+           if (!response.ok) {
+             throw new Error(response.status + ' ' + response.statusText);

            }
            }

-         }

 
 

-         for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+           return response.json();
+         }).then(function (result) {
+           if (!result) {
+             return [];
+           }

 
 

-         e = e << mLen | m;
-         eLen += mLen;
+           return result.data || [];
+         });
+       } // Partition viewport into higher zoom tiles

 
 

-         for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

 
 

-         buffer[offset + i - d] |= s * 128;
-       };
+       function partitionViewport$2(projection) {
+         var z = geoScaleToZoom(projection.scale());
+         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5

 
 

-       var ieee754$1 = {
-         read: read$6,
-         write: write$6
-       };
+         var tiler = utilTiler().zoomExtent([z2, z2]);
+         return tiler.getTiles(projection).map(function (tile) {
+           return tile.extent;
+         });
+       } // Return no more than `limit` results per partition.

 
 

-       var pbf = Pbf;

 
 

-       function Pbf(buf) {
-         this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);
-         this.pos = 0;
-         this.type = 0;
-         this.length = this.buf.length;
+       function searchLimited$2(limit, projection, rtree) {
+         limit = limit || 5;
+         return partitionViewport$2(projection).reduce(function (result, extent) {
+           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
+             return d.data;
+           });
+           return found.length ? result.concat(found) : result;
+         }, []);

        }
 
        }
 

-       Pbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
-
-       Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
-
-       Pbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
-
-       Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32
-
-       var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
-           SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32; // Threshold chosen based on both benchmarking and knowledge about browser string
-       // data structures (which currently switch structure types at 12 bytes or more)
+       var serviceMapillary = {
+         // Initialize Mapillary
+         init: function init() {
+           if (!_mlyCache) {
+             this.reset();
+           }

 
 

-       var TEXT_DECODER_MIN_LENGTH = 12;
-       var utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf8');
-       Pbf.prototype = {
-         destroy: function destroy() {
-           this.buf = null;
+           this.event = utilRebind(this, dispatch$4, 'on');

          },
          },

-         // === READING =================================================================
-         readFields: function readFields(readField, result, end) {
-           end = end || this.length;
-
-           while (this.pos < end) {
-             var val = this.readVarint(),
-                 tag = val >> 3,
-                 startPos = this.pos;
-             this.type = val & 0x7;
-             readField(tag, result, this);
-             if (this.pos === startPos) this.skip(val);
+         // Reset cache and state
+         reset: function reset() {
+           if (_mlyCache) {
+             Object.values(_mlyCache.requests.inflight).forEach(function (request) {
+               request.abort();
+             });

            }
 
            }
 

-           return result;
-         },
-         readMessage: function readMessage(readField, result) {
-           return this.readFields(readField, result, this.readVarint() + this.pos);
-         },
-         readFixed32: function readFixed32() {
-           var val = readUInt32(this.buf, this.pos);
-           this.pos += 4;
-           return val;
-         },
-         readSFixed32: function readSFixed32() {
-           var val = readInt32(this.buf, this.pos);
-           this.pos += 4;
-           return val;
+           _mlyCache = {
+             images: {
+               rtree: new RBush(),
+               forImageId: {}
+             },
+             image_detections: {
+               forImageId: {}
+             },
+             signs: {
+               rtree: new RBush()
+             },
+             points: {
+               rtree: new RBush()
+             },
+             sequences: {
+               rtree: new RBush(),
+               lineString: {}
+             },
+             requests: {
+               loaded: {},
+               inflight: {}
+             }
+           };
+           _mlyActiveImage = null;

          },
          },

-         // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)
-         readFixed64: function readFixed64() {
-           var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;
-           this.pos += 8;
-           return val;
+         // Get visible images
+         images: function images(projection) {
+           var limit = 5;
+           return searchLimited$2(limit, projection, _mlyCache.images.rtree);

          },
          },

-         readSFixed64: function readSFixed64() {
-           var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;
-           this.pos += 8;
-           return val;
+         // Get visible traffic signs
+         signs: function signs(projection) {
+           var limit = 5;
+           return searchLimited$2(limit, projection, _mlyCache.signs.rtree);

          },
          },

-         readFloat: function readFloat() {
-           var val = ieee754$1.read(this.buf, this.pos, true, 23, 4);
-           this.pos += 4;
-           return val;
+         // Get visible map (point) features
+         mapFeatures: function mapFeatures(projection) {
+           var limit = 5;
+           return searchLimited$2(limit, projection, _mlyCache.points.rtree);

          },
          },

-         readDouble: function readDouble() {
-           var val = ieee754$1.read(this.buf, this.pos, true, 52, 8);
-           this.pos += 8;
-           return val;
+         // Get cached image by id
+         cachedImage: function cachedImage(imageId) {
+           return _mlyCache.images.forImageId[imageId];

          },
          },

-         readVarint: function readVarint(isSigned) {
-           var buf = this.buf,
-               val,
-               b;
-           b = buf[this.pos++];
-           val = b & 0x7f;
-           if (b < 0x80) return val;
-           b = buf[this.pos++];
-           val |= (b & 0x7f) << 7;
-           if (b < 0x80) return val;
-           b = buf[this.pos++];
-           val |= (b & 0x7f) << 14;
-           if (b < 0x80) return val;
-           b = buf[this.pos++];
-           val |= (b & 0x7f) << 21;
-           if (b < 0x80) return val;
-           b = buf[this.pos];
-           val |= (b & 0x0f) << 28;
-           return readVarintRemainder(val, isSigned, this);
+         // Get visible sequences
+         sequences: function sequences(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           var sequenceIds = {};
+           var lineStrings = [];
+
+           _mlyCache.images.rtree.search(bbox).forEach(function (d) {
+             if (d.data.sequence_id) {
+               sequenceIds[d.data.sequence_id] = true;
+             }
+           });
+
+           Object.keys(sequenceIds).forEach(function (sequenceId) {
+             if (_mlyCache.sequences.lineString[sequenceId]) {
+               lineStrings = lineStrings.concat(_mlyCache.sequences.lineString[sequenceId]);
+             }
+           });
+           return lineStrings;

          },
          },

-         readVarint64: function readVarint64() {
-           // for compatibility with v2.0.1
-           return this.readVarint(true);
+         // Load images in the visible area
+         loadImages: function loadImages(projection) {
+           loadTiles$2('images', tileUrl, 14, projection);

          },
          },

-         readSVarint: function readSVarint() {
-           var num = this.readVarint();
-           return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
+         // Load traffic signs in the visible area
+         loadSigns: function loadSigns(projection) {
+           loadTiles$2('signs', trafficSignTileUrl, 14, projection);

          },
          },

-         readBoolean: function readBoolean() {
-           return Boolean(this.readVarint());
+         // Load map (point) features in the visible area
+         loadMapFeatures: function loadMapFeatures(projection) {
+           loadTiles$2('points', mapFeatureTileUrl, 14, projection);

          },
          },

-         readString: function readString() {
-           var end = this.readVarint() + this.pos;
-           var pos = this.pos;
-           this.pos = end;
+         // Return a promise that resolves when the image viewer (Mapillary JS) library has finished loading
+         ensureViewerLoaded: function ensureViewerLoaded(context) {
+           if (_loadViewerPromise$2) return _loadViewerPromise$2; // add mly-wrapper

 
 

-           if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {
-             // longer strings are fast with the built-in browser TextDecoder API
-             return readUtf8TextDecoder(this.buf, pos, end);
-           } // short strings are fast with our custom implementation
+           var wrap = context.container().select('.photoviewer').selectAll('.mly-wrapper').data([0]);
+           wrap.enter().append('div').attr('id', 'ideditor-mly').attr('class', 'photo-wrapper mly-wrapper').classed('hide', true);
+           var that = this;
+           _loadViewerPromise$2 = new Promise(function (resolve, reject) {
+             var loadedCount = 0;
+
+             function loaded() {
+               loadedCount += 1; // wait until both files are loaded
+
+               if (loadedCount === 2) resolve();
+             }

 
 

+             var head = select('head'); // load mapillary-viewercss

 
 

-           return readUtf8(this.buf, pos, end);
+             head.selectAll('#ideditor-mapillary-viewercss').data([0]).enter().append('link').attr('id', 'ideditor-mapillary-viewercss').attr('rel', 'stylesheet').attr('crossorigin', 'anonymous').attr('href', context.asset(viewercss)).on('load.serviceMapillary', loaded).on('error.serviceMapillary', function () {
+               reject();
+             }); // load mapillary-viewerjs
+
+             head.selectAll('#ideditor-mapillary-viewerjs').data([0]).enter().append('script').attr('id', 'ideditor-mapillary-viewerjs').attr('crossorigin', 'anonymous').attr('src', context.asset(viewerjs)).on('load.serviceMapillary', loaded).on('error.serviceMapillary', function () {
+               reject();
+             });
+           })["catch"](function () {
+             _loadViewerPromise$2 = null;
+           }).then(function () {
+             that.initViewer(context);
+           });
+           return _loadViewerPromise$2;

          },
          },

-         readBytes: function readBytes() {
-           var end = this.readVarint() + this.pos,
-               buffer = this.buf.subarray(this.pos, end);
-           this.pos = end;
-           return buffer;
+         // Load traffic sign image sprites
+         loadSignResources: function loadSignResources(context) {
+           context.ui().svgDefs.addSprites(['mapillary-sprite'], false
+           /* don't override colors */
+           );
+           return this;

          },
          },

-         // verbose for performance reasons; doesn't affect gzipped size
-         readPackedVarint: function readPackedVarint(arr, isSigned) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Load map (point) feature image sprites
+         loadObjectResources: function loadObjectResources(context) {
+           context.ui().svgDefs.addSprites(['mapillary-object-sprite'], false
+           /* don't override colors */
+           );
+           return this;
+         },
+         // Remove previous detections in image viewer
+         resetTags: function resetTags() {
+           if (_mlyViewer && !_mlyFallback) {
+             _mlyViewer.getComponent('tag').removeAll();
+           }
+         },
+         // Show map feature detections in image viewer
+         showFeatureDetections: function showFeatureDetections(value) {
+           _mlyShowFeatureDetections = value;

 
 

-           while (this.pos < end) {
-             arr.push(this.readVarint(isSigned));
+           if (!_mlyShowFeatureDetections && !_mlyShowSignDetections) {
+             this.resetTags();

            }
            }

+         },
+         // Show traffic sign detections in image viewer
+         showSignDetections: function showSignDetections(value) {
+           _mlyShowSignDetections = value;

 
 

-           return arr;
+           if (!_mlyShowFeatureDetections && !_mlyShowSignDetections) {
+             this.resetTags();
+           }

          },
          },

-         readPackedSVarint: function readPackedSVarint(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Apply filter to image viewer
+         filterViewer: function filterViewer(context) {
+           var showsPano = context.photos().showsPanoramic();
+           var showsFlat = context.photos().showsFlat();
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+           var filter = ['all'];
+           if (!showsPano) filter.push(['!=', 'cameraType', 'spherical']);
+           if (!showsFlat && showsPano) filter.push(['==', 'pano', true]);

 
 

-           while (this.pos < end) {
-             arr.push(this.readSVarint());
+           if (fromDate) {
+             filter.push(['>=', 'capturedAt', new Date(fromDate).getTime()]);

            }
 
            }
 

-           return arr;
-         },
-         readPackedBoolean: function readPackedBoolean(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+           if (toDate) {
+             filter.push(['>=', 'capturedAt', new Date(toDate).getTime()]);
+           }

 
 

-           while (this.pos < end) {
-             arr.push(this.readBoolean());
+           if (_mlyViewer) {
+             _mlyViewer.setFilter(filter);

            }
 
            }
 

-           return arr;
+           _mlyViewerFilter = filter;
+           return filter;

          },
          },

-         readPackedFloat: function readPackedFloat(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Make the image viewer visible
+         showViewer: function showViewer(context) {
+           var wrap = context.container().select('.photoviewer').classed('hide', false);
+           var isHidden = wrap.selectAll('.photo-wrapper.mly-wrapper.hide').size();

 
 

-           while (this.pos < end) {
-             arr.push(this.readFloat());
+           if (isHidden && _mlyViewer) {
+             wrap.selectAll('.photo-wrapper:not(.mly-wrapper)').classed('hide', true);
+             wrap.selectAll('.photo-wrapper.mly-wrapper').classed('hide', false);
+
+             _mlyViewer.resize();

            }
 
            }
 

-           return arr;
+           return this;

          },
          },

-         readPackedDouble: function readPackedDouble(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Hide the image viewer and resets map markers
+         hideViewer: function hideViewer(context) {
+           _mlyActiveImage = null;

 
 

-           while (this.pos < end) {
-             arr.push(this.readDouble());
+           if (!_mlyFallback && _mlyViewer) {
+             _mlyViewer.getComponent('sequence').stop();

            }
 
            }
 

-           return arr;
+           var viewer = context.container().select('.photoviewer');
+           if (!viewer.empty()) viewer.datum(null);
+           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
+           this.updateUrlImage(null);
+           dispatch$4.call('imageChanged');
+           dispatch$4.call('loadedMapFeatures');
+           dispatch$4.call('loadedSigns');
+           return this.setStyles(context, null);

          },
          },

-         readPackedFixed32: function readPackedFixed32(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Update the URL with current image id
+         updateUrlImage: function updateUrlImage(imageId) {
+           if (!window.mocha) {
+             var hash = utilStringQs(window.location.hash);

 
 

-           while (this.pos < end) {
-             arr.push(this.readFixed32());
-           }
+             if (imageId) {
+               hash.photo = 'mapillary/' + imageId;
+             } else {
+               delete hash.photo;
+             }

 
 

-           return arr;
+             window.location.replace('#' + utilQsString(hash, true));
+           }

          },
          },

-         readPackedSFixed32: function readPackedSFixed32(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());
-           var end = readPackedEnd(this);
-           arr = arr || [];
-
-           while (this.pos < end) {
-             arr.push(this.readSFixed32());
+         // Highlight the detection in the viewer that is related to the clicked map feature
+         highlightDetection: function highlightDetection(detection) {
+           if (detection) {
+             _mlyHighlightedDetection = detection.id;

            }
 
            }
 

-           return arr;
+           return this;

          },
          },

-         readPackedFixed64: function readPackedFixed64(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+         // Initialize image viewer (Mapillar JS)
+         initViewer: function initViewer(context) {
+           var that = this;
+           if (!window.mapillary) return;
+           var opts = {
+             accessToken: accessToken,
+             component: {
+               cover: false,
+               keyboard: false,
+               tag: true
+             },
+             container: 'ideditor-mly'
+           }; // Disable components requiring WebGL support

 
 

-           while (this.pos < end) {
-             arr.push(this.readFixed64());
+           if (!mapillary.isSupported() && mapillary.isFallbackSupported()) {
+             _mlyFallback = true;
+             opts.component = {
+               cover: false,
+               direction: false,
+               imagePlane: false,
+               keyboard: false,
+               mouse: false,
+               sequence: false,
+               tag: false,
+               image: true,
+               // fallback
+               navigation: true // fallback
+
+             };

            }
 
            }
 

-           return arr;
-         },
-         readPackedSFixed64: function readPackedSFixed64(arr) {
-           if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());
-           var end = readPackedEnd(this);
-           arr = arr || [];
+           _mlyViewer = new mapillary.Viewer(opts);

 
 

-           while (this.pos < end) {
-             arr.push(this.readSFixed64());
-           }
+           _mlyViewer.on('image', imageChanged);

 
 

-           return arr;
-         },
-         skip: function skip(val) {
-           var type = val & 0x7;
-           if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {} else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;else if (type === Pbf.Fixed32) this.pos += 4;else if (type === Pbf.Fixed64) this.pos += 8;else throw new Error('Unimplemented type: ' + type);
-         },
-         // === WRITING =================================================================
-         writeTag: function writeTag(tag, type) {
-           this.writeVarint(tag << 3 | type);
-         },
-         realloc: function realloc(min) {
-           var length = this.length || 16;
+           _mlyViewer.on('bearing', bearingChanged);

 
 

-           while (length < this.pos + min) {
-             length *= 2;
-           }
+           if (_mlyViewerFilter) {
+             _mlyViewer.setFilter(_mlyViewerFilter);
+           } // Register viewer resize handler

 
 

-           if (length !== this.length) {
-             var buf = new Uint8Array(length);
-             buf.set(this.buf);
-             this.buf = buf;
-             this.length = length;
-           }
-         },
-         finish: function finish() {
-           this.length = this.pos;
-           this.pos = 0;
-           return this.buf.subarray(0, this.length);
-         },
-         writeFixed32: function writeFixed32(val) {
-           this.realloc(4);
-           writeInt32(this.buf, val, this.pos);
-           this.pos += 4;
-         },
-         writeSFixed32: function writeSFixed32(val) {
-           this.realloc(4);
-           writeInt32(this.buf, val, this.pos);
-           this.pos += 4;
-         },
-         writeFixed64: function writeFixed64(val) {
-           this.realloc(8);
-           writeInt32(this.buf, val & -1, this.pos);
-           writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
-           this.pos += 8;
-         },
-         writeSFixed64: function writeSFixed64(val) {
-           this.realloc(8);
-           writeInt32(this.buf, val & -1, this.pos);
-           writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
-           this.pos += 8;
-         },
-         writeVarint: function writeVarint(val) {
-           val = +val || 0;

 
 

-           if (val > 0xfffffff || val < 0) {
-             writeBigVarint(val, this);
-             return;
-           }
+           context.ui().photoviewer.on('resize.mapillary', function () {
+             if (_mlyViewer) _mlyViewer.resize();
+           }); // imageChanged: called after the viewer has changed images and is ready.

 
 

-           this.realloc(4);
-           this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0);
-           if (val <= 0x7f) return;
-           this.buf[this.pos++] = (val >>>= 7) & 0x7f | (val > 0x7f ? 0x80 : 0);
-           if (val <= 0x7f) return;
-           this.buf[this.pos++] = (val >>>= 7) & 0x7f | (val > 0x7f ? 0x80 : 0);
-           if (val <= 0x7f) return;
-           this.buf[this.pos++] = val >>> 7 & 0x7f;
-         },
-         writeSVarint: function writeSVarint(val) {
-           this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
-         },
-         writeBoolean: function writeBoolean(val) {
-           this.writeVarint(Boolean(val));
-         },
-         writeString: function writeString(str) {
-           str = String(str);
-           this.realloc(str.length * 4);
-           this.pos++; // reserve 1 byte for short string length
+           function imageChanged(node) {
+             that.resetTags();
+             var image = node.image;
+             that.setActiveImage(image);
+             that.setStyles(context, null);
+             var loc = [image.originalLngLat.lng, image.originalLngLat.lat];
+             context.map().centerEase(loc);
+             that.updateUrlImage(image.id);

 
 

-           var startPos = this.pos; // write the string directly to the buffer and see how much was written
+             if (_mlyShowFeatureDetections || _mlyShowSignDetections) {
+               that.updateDetections(image.id, "".concat(apiUrl, "/").concat(image.id, "/detections?access_token=").concat(accessToken, "&fields=id,image,geometry,value"));
+             }

 
 

-           this.pos = writeUtf8(this.buf, str, this.pos);
-           var len = this.pos - startPos;
-           if (len >= 0x80) makeRoomForExtraLength(startPos, len, this); // finally, write the message length in the reserved place and restore the position
+             dispatch$4.call('imageChanged');
+           } // bearingChanged: called when the bearing changes in the image viewer.

 
 

-           this.pos = startPos - 1;
-           this.writeVarint(len);
-           this.pos += len;
-         },
-         writeFloat: function writeFloat(val) {
-           this.realloc(4);
-           ieee754$1.write(this.buf, val, this.pos, true, 23, 4);
-           this.pos += 4;
-         },
-         writeDouble: function writeDouble(val) {
-           this.realloc(8);
-           ieee754$1.write(this.buf, val, this.pos, true, 52, 8);
-           this.pos += 8;
-         },
-         writeBytes: function writeBytes(buffer) {
-           var len = buffer.length;
-           this.writeVarint(len);
-           this.realloc(len);

 
 

-           for (var i = 0; i < len; i++) {
-             this.buf[this.pos++] = buffer[i];
+           function bearingChanged(e) {
+             dispatch$4.call('bearingChanged', undefined, e);

            }
          },
            }
          },

-         writeRawMessage: function writeRawMessage(fn, obj) {
-           this.pos++; // reserve 1 byte for short message length
-           // write the message directly to the buffer and see how much was written
-
-           var startPos = this.pos;
-           fn(obj, this);
-           var len = this.pos - startPos;
-           if (len >= 0x80) makeRoomForExtraLength(startPos, len, this); // finally, write the message length in the reserved place and restore the position
+         // Move to an image
+         selectImage: function selectImage(context, imageId) {
+           if (_mlyViewer && imageId) {
+             _mlyViewer.moveTo(imageId)["catch"](function (e) {
+               console.error('mly3', e); // eslint-disable-line no-console
+             });
+           }

 
 

-           this.pos = startPos - 1;
-           this.writeVarint(len);
-           this.pos += len;
-         },
-         writeMessage: function writeMessage(tag, fn, obj) {
-           this.writeTag(tag, Pbf.Bytes);
-           this.writeRawMessage(fn, obj);
-         },
-         writePackedVarint: function writePackedVarint(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedVarint, arr);
-         },
-         writePackedSVarint: function writePackedSVarint(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedSVarint, arr);
-         },
-         writePackedBoolean: function writePackedBoolean(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedBoolean, arr);
-         },
-         writePackedFloat: function writePackedFloat(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedFloat, arr);
-         },
-         writePackedDouble: function writePackedDouble(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedDouble, arr);
-         },
-         writePackedFixed32: function writePackedFixed32(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedFixed, arr);
-         },
-         writePackedSFixed32: function writePackedSFixed32(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedSFixed, arr);
-         },
-         writePackedFixed64: function writePackedFixed64(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedFixed2, arr);
-         },
-         writePackedSFixed64: function writePackedSFixed64(tag, arr) {
-           if (arr.length) this.writeMessage(tag, _writePackedSFixed2, arr);
-         },
-         writeBytesField: function writeBytesField(tag, buffer) {
-           this.writeTag(tag, Pbf.Bytes);
-           this.writeBytes(buffer);
-         },
-         writeFixed32Field: function writeFixed32Field(tag, val) {
-           this.writeTag(tag, Pbf.Fixed32);
-           this.writeFixed32(val);
-         },
-         writeSFixed32Field: function writeSFixed32Field(tag, val) {
-           this.writeTag(tag, Pbf.Fixed32);
-           this.writeSFixed32(val);
-         },
-         writeFixed64Field: function writeFixed64Field(tag, val) {
-           this.writeTag(tag, Pbf.Fixed64);
-           this.writeFixed64(val);
-         },
-         writeSFixed64Field: function writeSFixed64Field(tag, val) {
-           this.writeTag(tag, Pbf.Fixed64);
-           this.writeSFixed64(val);
-         },
-         writeVarintField: function writeVarintField(tag, val) {
-           this.writeTag(tag, Pbf.Varint);
-           this.writeVarint(val);
+           return this;

          },
          },

-         writeSVarintField: function writeSVarintField(tag, val) {
-           this.writeTag(tag, Pbf.Varint);
-           this.writeSVarint(val);
+         // Return the currently displayed image
+         getActiveImage: function getActiveImage() {
+           return _mlyActiveImage;

          },
          },

-         writeStringField: function writeStringField(tag, str) {
-           this.writeTag(tag, Pbf.Bytes);
-           this.writeString(str);
+         // Return a list of detection objects for the given id
+         getDetections: function getDetections(id) {
+           return loadData("".concat(apiUrl, "/").concat(id, "/detections?access_token=").concat(accessToken, "&fields=id,value,image"));

          },
          },

-         writeFloatField: function writeFloatField(tag, val) {
-           this.writeTag(tag, Pbf.Fixed32);
-           this.writeFloat(val);
+         // Set the currently visible image
+         setActiveImage: function setActiveImage(image) {
+           if (image) {
+             _mlyActiveImage = {
+               ca: image.originalCompassAngle,
+               id: image.id,
+               loc: [image.originalLngLat.lng, image.originalLngLat.lat],
+               is_pano: image.cameraType === 'spherical',
+               sequence_id: image.sequenceId
+             };
+           } else {
+             _mlyActiveImage = null;
+           }

          },
          },

-         writeDoubleField: function writeDoubleField(tag, val) {
-           this.writeTag(tag, Pbf.Fixed64);
-           this.writeDouble(val);
+         // Update the currently highlighted sequence and selected bubble.
+         setStyles: function setStyles(context, hovered) {
+           var hoveredImageId = hovered && hovered.id;
+           var hoveredSequenceId = hovered && hovered.sequence_id;
+           var selectedSequenceId = _mlyActiveImage && _mlyActiveImage.sequence_id;
+           context.container().selectAll('.layer-mapillary .viewfield-group').classed('highlighted', function (d) {
+             return d.sequence_id === selectedSequenceId || d.id === hoveredImageId;
+           }).classed('hovered', function (d) {
+             return d.id === hoveredImageId;
+           });
+           context.container().selectAll('.layer-mapillary .sequence').classed('highlighted', function (d) {
+             return d.properties.id === hoveredSequenceId;
+           }).classed('currentView', function (d) {
+             return d.properties.id === selectedSequenceId;
+           });
+           return this;

          },
          },

-         writeBooleanField: function writeBooleanField(tag, val) {
-           this.writeVarintField(tag, Boolean(val));
-         }
-       };
+         // Get detections for the current image and shows them in the image viewer
+         updateDetections: function updateDetections(imageId, url) {
+           if (!_mlyViewer || _mlyFallback) return;
+           if (!imageId) return;
+           var cache = _mlyCache.image_detections;

 
 

-       function readVarintRemainder(l, s, p) {
-         var buf = p.buf,
-             h,
-             b;
-         b = buf[p.pos++];
-         h = (b & 0x70) >> 4;
-         if (b < 0x80) return toNum(l, h, s);
-         b = buf[p.pos++];
-         h |= (b & 0x7f) << 3;
-         if (b < 0x80) return toNum(l, h, s);
-         b = buf[p.pos++];
-         h |= (b & 0x7f) << 10;
-         if (b < 0x80) return toNum(l, h, s);
-         b = buf[p.pos++];
-         h |= (b & 0x7f) << 17;
-         if (b < 0x80) return toNum(l, h, s);
-         b = buf[p.pos++];
-         h |= (b & 0x7f) << 24;
-         if (b < 0x80) return toNum(l, h, s);
-         b = buf[p.pos++];
-         h |= (b & 0x01) << 31;
-         if (b < 0x80) return toNum(l, h, s);
-         throw new Error('Expected varint not more than 10 bytes');
-       }
+           if (cache.forImageId[imageId]) {
+             showDetections(_mlyCache.image_detections.forImageId[imageId]);
+           } else {
+             loadData(url).then(function (detections) {
+               detections.forEach(function (detection) {
+                 if (!cache.forImageId[imageId]) {
+                   cache.forImageId[imageId] = [];
+                 }

 
 

-       function readPackedEnd(pbf) {
-         return pbf.type === Pbf.Bytes ? pbf.readVarint() + pbf.pos : pbf.pos + 1;
-       }
+                 cache.forImageId[imageId].push({
+                   geometry: detection.geometry,
+                   id: detection.id,
+                   image_id: imageId,
+                   value: detection.value
+                 });
+               });
+               showDetections(_mlyCache.image_detections.forImageId[imageId] || []);
+             });
+           } // Create a tag for each detection and shows it in the image viewer

 
 

-       function toNum(low, high, isSigned) {
-         if (isSigned) {
-           return high * 0x100000000 + (low >>> 0);
-         }

 
 

-         return (high >>> 0) * 0x100000000 + (low >>> 0);
-       }
+           function showDetections(detections) {
+             var tagComponent = _mlyViewer.getComponent('tag');

 
 

-       function writeBigVarint(val, pbf) {
-         var low, high;
+             detections.forEach(function (data) {
+               var tag = makeTag(data);

 
 

-         if (val >= 0) {
-           low = val % 0x100000000 | 0;
-           high = val / 0x100000000 | 0;
-         } else {
-           low = ~(-val % 0x100000000);
-           high = ~(-val / 0x100000000);
+               if (tag) {
+                 tagComponent.add([tag]);
+               }
+             });
+           } // Create a Mapillary JS tag object

 
 

-           if (low ^ 0xffffffff) {
-             low = low + 1 | 0;
-           } else {
-             low = 0;
-             high = high + 1 | 0;
+
+           function makeTag(data) {
+             var valueParts = data.value.split('--');
+             if (!valueParts.length) return;
+             var tag;
+             var text;
+             var color = 0xffffff;
+
+             if (_mlyHighlightedDetection === data.id) {
+               color = 0xffff00;
+               text = valueParts[1];
+
+               if (text === 'flat' || text === 'discrete' || text === 'sign') {
+                 text = valueParts[2];
+               }
+
+               text = text.replace(/-/g, ' ');
+               text = text.charAt(0).toUpperCase() + text.slice(1);
+               _mlyHighlightedDetection = null;
+             }
+
+             var decodedGeometry = window.atob(data.geometry);
+             var uintArray = new Uint8Array(decodedGeometry.length);
+
+             for (var i = 0; i < decodedGeometry.length; i++) {
+               uintArray[i] = decodedGeometry.charCodeAt(i);
+             }
+
+             var tile = new VectorTile(new pbf(uintArray.buffer));
+             var layer = tile.layers['mpy-or'];
+             var geometries = layer.feature(0).loadGeometry();
+             var polygon = geometries.map(function (ring) {
+               return ring.map(function (point) {
+                 return [point.x / layer.extent, point.y / layer.extent];
+               });
+             });
+             tag = new mapillary.OutlineTag(data.id, new mapillary.PolygonGeometry(polygon[0]), {
+               text: text,
+               textColor: color,
+               lineColor: color,
+               lineWidth: 2,
+               fillColor: color,
+               fillOpacity: 0.3
+             });
+             return tag;

            }
            }

+         },
+         // Return the current cache
+         cache: function cache() {
+           return _mlyCache;

          }
          }

+       };

 
 

-         if (val >= 0x10000000000000000 || val < -0x10000000000000000) {
-           throw new Error('Given varint doesn\'t fit into 10 bytes');
-         }
+       function validationIssue(attrs) {
+         this.type = attrs.type; // required - name of rule that created the issue (e.g. 'missing_tag')

 
 

-         pbf.realloc(10);
-         writeBigVarintLow(low, high, pbf);
-         writeBigVarintHigh(high, pbf);
-       }
+         this.subtype = attrs.subtype; // optional - category of the issue within the type (e.g. 'relation_type' under 'missing_tag')

 
 

-       function writeBigVarintLow(low, high, pbf) {
-         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
-         low >>>= 7;
-         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
-         low >>>= 7;
-         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
-         low >>>= 7;
-         pbf.buf[pbf.pos++] = low & 0x7f | 0x80;
-         low >>>= 7;
-         pbf.buf[pbf.pos] = low & 0x7f;
-       }
+         this.severity = attrs.severity; // required - 'warning' or 'error'

 
 

-       function writeBigVarintHigh(high, pbf) {
-         var lsb = (high & 0x07) << 4;
-         pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0);
-         if (!high) return;
-         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
-         if (!high) return;
-         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
-         if (!high) return;
-         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
-         if (!high) return;
-         pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0);
-         if (!high) return;
-         pbf.buf[pbf.pos++] = high & 0x7f;
-       }
+         this.message = attrs.message; // required - function returning localized string

 
 

-       function makeRoomForExtraLength(startPos, len, pbf) {
-         var extraLen = len <= 0x3fff ? 1 : len <= 0x1fffff ? 2 : len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7)); // if 1 byte isn't enough for encoding message length, shift the data to the right
+         this.reference = attrs.reference; // optional - function(selection) to render reference information

 
 

-         pbf.realloc(extraLen);
+         this.entityIds = attrs.entityIds; // optional - array of IDs of entities involved in the issue

 
 

-         for (var i = pbf.pos - 1; i >= startPos; i--) {
-           pbf.buf[i + extraLen] = pbf.buf[i];
-         }
-       }
+         this.loc = attrs.loc; // optional - [lon, lat] to zoom in on to see the issue

 
 

-       function _writePackedVarint(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeVarint(arr[i]);
-         }
-       }
+         this.data = attrs.data; // optional - object containing extra data for the fixes

 
 

-       function _writePackedSVarint(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeSVarint(arr[i]);
-         }
-       }
+         this.dynamicFixes = attrs.dynamicFixes; // optional - function(context) returning fixes

 
 

-       function _writePackedFloat(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeFloat(arr[i]);
-         }
-       }
+         this.hash = attrs.hash; // optional - string to further differentiate the issue

 
 

-       function _writePackedDouble(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeDouble(arr[i]);
-         }
-       }
+         this.id = generateID.apply(this); // generated - see below

 
 

-       function _writePackedBoolean(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeBoolean(arr[i]);
-         }
-       }
+         this.key = generateKey.apply(this); // generated - see below (call after generating this.id)

 
 

-       function _writePackedFixed(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeFixed32(arr[i]);
-         }
-       }
+         this.autoFix = null; // generated - if autofix exists, will be set below
+         // A unique, deterministic string hash.
+         // Issues with identical id values are considered identical.

 
 

-       function _writePackedSFixed(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeSFixed32(arr[i]);
-         }
-       }
+         function generateID() {
+           var parts = [this.type];

 
 

-       function _writePackedFixed2(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeFixed64(arr[i]);
-         }
-       }
+           if (this.hash) {
+             // subclasses can pass in their own differentiator
+             parts.push(this.hash);
+           }

 
 

-       function _writePackedSFixed2(arr, pbf) {
-         for (var i = 0; i < arr.length; i++) {
-           pbf.writeSFixed64(arr[i]);
-         }
-       } // Buffer code below from https://github.com/feross/buffer, MIT-licensed
+           if (this.subtype) {
+             parts.push(this.subtype);
+           } // include the entities this issue is for
+           // (sort them so the id is deterministic)

 
 
 
 

-       function readUInt32(buf, pos) {
-         return (buf[pos] | buf[pos + 1] << 8 | buf[pos + 2] << 16) + buf[pos + 3] * 0x1000000;
-       }
+           if (this.entityIds) {
+             var entityKeys = this.entityIds.slice().sort();
+             parts.push.apply(parts, entityKeys);
+           }

 
 

-       function writeInt32(buf, val, pos) {
-         buf[pos] = val;
-         buf[pos + 1] = val >>> 8;
-         buf[pos + 2] = val >>> 16;
-         buf[pos + 3] = val >>> 24;
-       }
+           return parts.join(':');
+         } // An identifier suitable for use as the second argument to d3.selection#data().
+         // (i.e. this should change whenever the data needs to be refreshed)

 
 

-       function readInt32(buf, pos) {
-         return (buf[pos] | buf[pos + 1] << 8 | buf[pos + 2] << 16) + (buf[pos + 3] << 24);
-       }

 
 

-       function readUtf8(buf, pos, end) {
-         var str = '';
-         var i = pos;
+         function generateKey() {
+           return this.id + ':' + Date.now().toString(); // include time of creation
+         }

 
 

-         while (i < end) {
-           var b0 = buf[i];
-           var c = null; // codepoint
+         this.extent = function (resolver) {
+           if (this.loc) {
+             return geoExtent(this.loc);
+           }

 
 

-           var bytesPerSequence = b0 > 0xEF ? 4 : b0 > 0xDF ? 3 : b0 > 0xBF ? 2 : 1;
-           if (i + bytesPerSequence > end) break;
-           var b1, b2, b3;
+           if (this.entityIds && this.entityIds.length) {
+             return this.entityIds.reduce(function (extent, entityId) {
+               return extent.extend(resolver.entity(entityId).extent(resolver));
+             }, geoExtent());
+           }

 
 

-           if (bytesPerSequence === 1) {
-             if (b0 < 0x80) {
-               c = b0;
-             }
-           } else if (bytesPerSequence === 2) {
-             b1 = buf[i + 1];
+           return null;
+         };

 
 

-             if ((b1 & 0xC0) === 0x80) {
-               c = (b0 & 0x1F) << 0x6 | b1 & 0x3F;
+         this.fixes = function (context) {
+           var fixes = this.dynamicFixes ? this.dynamicFixes(context) : [];
+           var issue = this;

 
 

-               if (c <= 0x7F) {
-                 c = null;
+           if (issue.severity === 'warning') {
+             // allow ignoring any issue that's not an error
+             fixes.push(new validationIssueFix({
+               title: _t.html('issues.fix.ignore_issue.title'),
+               icon: 'iD-icon-close',
+               onClick: function onClick() {
+                 context.validator().ignoreIssue(this.issue.id);

                }
                }

-             }
-           } else if (bytesPerSequence === 3) {
-             b1 = buf[i + 1];
-             b2 = buf[i + 2];
+             }));
+           }

 
 

-             if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {
-               c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | b2 & 0x3F;
+           fixes.forEach(function (fix) {
+             // the id doesn't matter as long as it's unique to this issue/fix
+             fix.id = fix.title; // add a reference to the issue for use in actions

 
 

-               if (c <= 0x7FF || c >= 0xD800 && c <= 0xDFFF) {
-                 c = null;
-               }
+             fix.issue = issue;
+
+             if (fix.autoArgs) {
+               issue.autoFix = fix;

              }
              }

-           } else if (bytesPerSequence === 4) {
-             b1 = buf[i + 1];
-             b2 = buf[i + 2];
-             b3 = buf[i + 3];
+           });
+           return fixes;
+         };
+       }
+       function validationIssueFix(attrs) {
+         this.title = attrs.title; // Required

 
 

-             if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {
-               c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | b3 & 0x3F;
+         this.onClick = attrs.onClick; // Optional - the function to run to apply the fix

 
 

-               if (c <= 0xFFFF || c >= 0x110000) {
-                 c = null;
-               }
-             }
-           }
+         this.disabledReason = attrs.disabledReason; // Optional - a string explaining why the fix is unavailable, if any

 
 

-           if (c === null) {
-             c = 0xFFFD;
-             bytesPerSequence = 1;
-           } else if (c > 0xFFFF) {
-             c -= 0x10000;
-             str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);
-             c = 0xDC00 | c & 0x3FF;
-           }
+         this.icon = attrs.icon; // Optional - shows 'iD-icon-wrench' if not set

 
 

-           str += String.fromCharCode(c);
-           i += bytesPerSequence;
-         }
+         this.entityIds = attrs.entityIds || []; // Optional - used for hover-higlighting.

 
 

-         return str;
-       }
+         this.autoArgs = attrs.autoArgs; // Optional - pass [actions, annotation] arglist if this fix can automatically run

 
 

-       function readUtf8TextDecoder(buf, pos, end) {
-         return utf8TextDecoder.decode(buf.subarray(pos, end));
+         this.issue = null; // Generated link - added by validationIssue

        }
 
        }
 

-       function writeUtf8(buf, str, pos) {
-         for (var i = 0, c, lead; i < str.length; i++) {
-           c = str.charCodeAt(i); // code point
-
-           if (c > 0xD7FF && c < 0xE000) {
-             if (lead) {
-               if (c < 0xDC00) {
-                 buf[pos++] = 0xEF;
-                 buf[pos++] = 0xBF;
-                 buf[pos++] = 0xBD;
-                 lead = c;
-                 continue;
-               } else {
-                 c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
-                 lead = null;
-               }
-             } else {
-               if (c > 0xDBFF || i + 1 === str.length) {
-                 buf[pos++] = 0xEF;
-                 buf[pos++] = 0xBF;
-                 buf[pos++] = 0xBD;
-               } else {
-                 lead = c;
-               }
+       var buildRuleChecks = function buildRuleChecks() {
+         return {
+           equals: function equals(_equals) {
+             return function (tags) {
+               return Object.keys(_equals).every(function (k) {
+                 return _equals[k] === tags[k];
+               });
+             };
+           },
+           notEquals: function notEquals(_notEquals) {
+             return function (tags) {
+               return Object.keys(_notEquals).some(function (k) {
+                 return _notEquals[k] !== tags[k];
+               });
+             };
+           },
+           absence: function absence(_absence) {
+             return function (tags) {
+               return Object.keys(tags).indexOf(_absence) === -1;
+             };
+           },
+           presence: function presence(_presence) {
+             return function (tags) {
+               return Object.keys(tags).indexOf(_presence) > -1;
+             };
+           },
+           greaterThan: function greaterThan(_greaterThan) {
+             var key = Object.keys(_greaterThan)[0];
+             var value = _greaterThan[key];
+             return function (tags) {
+               return tags[key] > value;
+             };
+           },
+           greaterThanEqual: function greaterThanEqual(_greaterThanEqual) {
+             var key = Object.keys(_greaterThanEqual)[0];
+             var value = _greaterThanEqual[key];
+             return function (tags) {
+               return tags[key] >= value;
+             };
+           },
+           lessThan: function lessThan(_lessThan) {
+             var key = Object.keys(_lessThan)[0];
+             var value = _lessThan[key];
+             return function (tags) {
+               return tags[key] < value;
+             };
+           },
+           lessThanEqual: function lessThanEqual(_lessThanEqual) {
+             var key = Object.keys(_lessThanEqual)[0];
+             var value = _lessThanEqual[key];
+             return function (tags) {
+               return tags[key] <= value;
+             };
+           },
+           positiveRegex: function positiveRegex(_positiveRegex) {
+             var tagKey = Object.keys(_positiveRegex)[0];

 
 

-               continue;
-             }
-           } else if (lead) {
-             buf[pos++] = 0xEF;
-             buf[pos++] = 0xBF;
-             buf[pos++] = 0xBD;
-             lead = null;
-           }
+             var expression = _positiveRegex[tagKey].join('|');

 
 

-           if (c < 0x80) {
-             buf[pos++] = c;
-           } else {
-             if (c < 0x800) {
-               buf[pos++] = c >> 0x6 | 0xC0;
-             } else {
-               if (c < 0x10000) {
-                 buf[pos++] = c >> 0xC | 0xE0;
-               } else {
-                 buf[pos++] = c >> 0x12 | 0xF0;
-                 buf[pos++] = c >> 0xC & 0x3F | 0x80;
-               }
+             var regex = new RegExp(expression);
+             return function (tags) {
+               return regex.test(tags[tagKey]);
+             };
+           },
+           negativeRegex: function negativeRegex(_negativeRegex) {
+             var tagKey = Object.keys(_negativeRegex)[0];

 
 

-               buf[pos++] = c >> 0x6 & 0x3F | 0x80;
-             }
+             var expression = _negativeRegex[tagKey].join('|');

 
 

-             buf[pos++] = c & 0x3F | 0x80;
+             var regex = new RegExp(expression);
+             return function (tags) {
+               return !regex.test(tags[tagKey]);
+             };

            }
            }

-         }
-
-         return pos;
-       }
-
-       var pointGeometry = Point;
-       /**
-        * A standalone point geometry with useful accessor, comparison, and
-        * modification methods.
-        *
-        * @class Point
-        * @param {Number} x the x-coordinate. this could be longitude or screen
-        * pixels, or any other sort of unit.
-        * @param {Number} y the y-coordinate. this could be latitude or screen
-        * pixels, or any other sort of unit.
-        * @example
-        * var point = new Point(-77, 38);
-        */
+         };
+       };

 
 

-       function Point(x, y) {
-         this.x = x;
-         this.y = y;
-       }
+       var buildLineKeys = function buildLineKeys() {
+         return {
+           highway: {
+             rest_area: true,
+             services: true
+           },
+           railway: {
+             roundhouse: true,
+             station: true,
+             traverser: true,
+             turntable: true,
+             wash: true
+           }
+         };
+       };

 
 

-       Point.prototype = {
-         /**
-          * Clone this point, returning a new point that can be modified
-          * without affecting the old one.
-          * @return {Point} the clone
-          */
-         clone: function clone() {
-           return new Point(this.x, this.y);
+       var serviceMapRules = {
+         init: function init() {
+           this._ruleChecks = buildRuleChecks();
+           this._validationRules = [];
+           this._areaKeys = osmAreaKeys;
+           this._lineKeys = buildLineKeys();

          },
          },

+         // list of rules only relevant to tag checks...
+         filterRuleChecks: function filterRuleChecks(selector) {
+           var _ruleChecks = this._ruleChecks;
+           return Object.keys(selector).reduce(function (rules, key) {
+             if (['geometry', 'error', 'warning'].indexOf(key) === -1) {
+               rules.push(_ruleChecks[key](selector[key]));
+             }

 
 

-         /**
-          * Add this point's x & y coordinates to another point,
-          * yielding a new point.
-          * @param {Point} p the other point
-          * @return {Point} output point
-          */
-         add: function add(p) {
-           return this.clone()._add(p);
+             return rules;
+           }, []);

          },
          },

+         // builds tagMap from mapcss-parse selector object...
+         buildTagMap: function buildTagMap(selector) {
+           var getRegexValues = function getRegexValues(regexes) {
+             return regexes.map(function (regex) {
+               return regex.replace(/\$|\^/g, '');
+             });
+           };

 
 

-         /**
-          * Subtract this point's x & y coordinates to from point,
-          * yielding a new point.
-          * @param {Point} p the other point
-          * @return {Point} output point
-          */
-         sub: function sub(p) {
-           return this.clone()._sub(p);
-         },
+           var tagMap = Object.keys(selector).reduce(function (expectedTags, key) {
+             var values;
+             var isRegex = /regex/gi.test(key);
+             var isEqual = /equals/gi.test(key);

 
 

-         /**
-          * Multiply this point's x & y coordinates by point,
-          * yielding a new point.
-          * @param {Point} p the other point
-          * @return {Point} output point
-          */
-         multByPoint: function multByPoint(p) {
-           return this.clone()._multByPoint(p);
-         },
+             if (isRegex || isEqual) {
+               Object.keys(selector[key]).forEach(function (selectorKey) {
+                 values = isEqual ? [selector[key][selectorKey]] : getRegexValues(selector[key][selectorKey]);

 
 

-         /**
-          * Divide this point's x & y coordinates by point,
-          * yielding a new point.
-          * @param {Point} p the other point
-          * @return {Point} output point
-          */
-         divByPoint: function divByPoint(p) {
-           return this.clone()._divByPoint(p);
-         },
+                 if (expectedTags.hasOwnProperty(selectorKey)) {
+                   values = values.concat(expectedTags[selectorKey]);
+                 }

 
 

-         /**
-          * Multiply this point's x & y coordinates by a factor,
-          * yielding a new point.
-          * @param {Point} k factor
-          * @return {Point} output point
-          */
-         mult: function mult(k) {
-           return this.clone()._mult(k);
-         },
+                 expectedTags[selectorKey] = values;
+               });
+             } else if (/(greater|less)Than(Equal)?|presence/g.test(key)) {
+               var tagKey = /presence/.test(key) ? selector[key] : Object.keys(selector[key])[0];
+               values = [selector[key][tagKey]];

 
 

-         /**
-          * Divide this point's x & y coordinates by a factor,
-          * yielding a new point.
-          * @param {Point} k factor
-          * @return {Point} output point
-          */
-         div: function div(k) {
-           return this.clone()._div(k);
-         },
+               if (expectedTags.hasOwnProperty(tagKey)) {
+                 values = values.concat(expectedTags[tagKey]);
+               }

 
 

-         /**
-          * Rotate this point around the 0, 0 origin by an angle a,
-          * given in radians
-          * @param {Number} a angle to rotate around, in radians
-          * @return {Point} output point
-          */
-         rotate: function rotate(a) {
-           return this.clone()._rotate(a);
-         },
+               expectedTags[tagKey] = values;
+             }

 
 

-         /**
-          * Rotate this point around p point by an angle a,
-          * given in radians
-          * @param {Number} a angle to rotate around, in radians
-          * @param {Point} p Point to rotate around
-          * @return {Point} output point
-          */
-         rotateAround: function rotateAround(a, p) {
-           return this.clone()._rotateAround(a, p);
+             return expectedTags;
+           }, {});
+           return tagMap;

          },
          },

+         // inspired by osmWay#isArea()
+         inferGeometry: function inferGeometry(tagMap) {
+           var _lineKeys = this._lineKeys;
+           var _areaKeys = this._areaKeys;

 
 

-         /**
-          * Multiply this point by a 4x1 transformation matrix
-          * @param {Array<Number>} m transformation matrix
-          * @return {Point} output point
-          */
-         matMult: function matMult(m) {
-           return this.clone()._matMult(m);
-         },
+           var keyValueDoesNotImplyArea = function keyValueDoesNotImplyArea(key) {
+             return utilArrayIntersection(tagMap[key], Object.keys(_areaKeys[key])).length > 0;
+           };

 
 

-         /**
-          * Calculate this point but as a unit vector from 0, 0, meaning
-          * that the distance from the resulting point to the 0, 0
-          * coordinate will be equal to 1 and the angle from the resulting
-          * point to the 0, 0 coordinate will be the same as before.
-          * @return {Point} unit vector point
-          */
-         unit: function unit() {
-           return this.clone()._unit();
-         },
+           var keyValueImpliesLine = function keyValueImpliesLine(key) {
+             return utilArrayIntersection(tagMap[key], Object.keys(_lineKeys[key])).length > 0;
+           };

 
 

-         /**
-          * Compute a perpendicular point, where the new y coordinate
-          * is the old x coordinate and the new x coordinate is the old y
-          * coordinate multiplied by -1
-          * @return {Point} perpendicular point
-          */
-         perp: function perp() {
-           return this.clone()._perp();
-         },
+           if (tagMap.hasOwnProperty('area')) {
+             if (tagMap.area.indexOf('yes') > -1) {
+               return 'area';
+             }

 
 

-         /**
-          * Return a version of this point with the x & y coordinates
-          * rounded to integers.
-          * @return {Point} rounded point
-          */
-         round: function round() {
-           return this.clone()._round();
-         },
+             if (tagMap.area.indexOf('no') > -1) {
+               return 'line';
+             }
+           }

 
 

-         /**
-          * Return the magitude of this point: this is the Euclidean
-          * distance from the 0, 0 coordinate to this point's x and y
-          * coordinates.
-          * @return {Number} magnitude
-          */
-         mag: function mag() {
-           return Math.sqrt(this.x * this.x + this.y * this.y);
-         },
+           for (var key in tagMap) {
+             if (key in _areaKeys && !keyValueDoesNotImplyArea(key)) {
+               return 'area';
+             }

 
 

-         /**
-          * Judge whether this point is equal to another point, returning
-          * true or false.
-          * @param {Point} other the other point
-          * @return {boolean} whether the points are equal
-          */
-         equals: function equals(other) {
-           return this.x === other.x && this.y === other.y;
-         },
+             if (key in _lineKeys && keyValueImpliesLine(key)) {
+               return 'area';
+             }
+           }

 
 

-         /**
-          * Calculate the distance from this point to another point
-          * @param {Point} p the other point
-          * @return {Number} distance
-          */
-         dist: function dist(p) {
-           return Math.sqrt(this.distSqr(p));
+           return 'line';

          },
          },

+         // adds from mapcss-parse selector check...
+         addRule: function addRule(selector) {
+           var rule = {
+             // checks relevant to mapcss-selector
+             checks: this.filterRuleChecks(selector),
+             // true if all conditions for a tag error are true..
+             matches: function matches(entity) {
+               return this.checks.every(function (check) {
+                 return check(entity.tags);
+               });
+             },
+             // borrowed from Way#isArea()
+             inferredGeometry: this.inferGeometry(this.buildTagMap(selector), this._areaKeys),
+             geometryMatches: function geometryMatches(entity, graph) {
+               if (entity.type === 'node' || entity.type === 'relation') {
+                 return selector.geometry === entity.type;
+               } else if (entity.type === 'way') {
+                 return this.inferredGeometry === entity.geometry(graph);
+               }
+             },
+             // when geometries match and tag matches are present, return a warning...
+             findIssues: function findIssues(entity, graph, issues) {
+               if (this.geometryMatches(entity, graph) && this.matches(entity)) {
+                 var severity = Object.keys(selector).indexOf('error') > -1 ? 'error' : 'warning';
+                 var _message = selector[severity];
+                 issues.push(new validationIssue({
+                   type: 'maprules',
+                   severity: severity,
+                   message: function message() {
+                     return _message;
+                   },
+                   entityIds: [entity.id]
+                 }));
+               }
+             }
+           };

 
 

-         /**
-          * Calculate the distance from this point to another point,
-          * without the square root step. Useful if you're comparing
-          * relative distances.
-          * @param {Point} p the other point
-          * @return {Number} distance
-          */
-         distSqr: function distSqr(p) {
-           var dx = p.x - this.x,
-               dy = p.y - this.y;
-           return dx * dx + dy * dy;
+           this._validationRules.push(rule);

          },
          },

-
-         /**
-          * Get the angle from the 0, 0 coordinate to this point, in radians
-          * coordinates.
-          * @return {Number} angle
-          */
-         angle: function angle() {
-           return Math.atan2(this.y, this.x);
+         clearRules: function clearRules() {
+           this._validationRules = [];

          },
          },

-
-         /**
-          * Get the angle from this point to another point, in radians
-          * @param {Point} b the other point
-          * @return {Number} angle
-          */
-         angleTo: function angleTo(b) {
-           return Math.atan2(this.y - b.y, this.x - b.x);
+         // returns validationRules...
+         validationRules: function validationRules() {
+           return this._validationRules;

          },
          },

+         // returns ruleChecks
+         ruleChecks: function ruleChecks() {
+           return this._ruleChecks;
+         }
+       };

 
 

-         /**
-          * Get the angle between this point and another point, in radians
-          * @param {Point} b the other point
-          * @return {Number} angle
-          */
-         angleWith: function angleWith(b) {
-           return this.angleWithSep(b.x, b.y);
-         },
+       var apibase$2 = 'https://nominatim.openstreetmap.org/';
+       var _inflight$2 = {};

 
 

-         /*
-          * Find the angle of the two vectors, solving the formula for
-          * the cross product a x b = |a||b|sin(θ) for θ.
-          * @param {Number} x the x-coordinate
-          * @param {Number} y the y-coordinate
-          * @return {Number} the angle in radians
-          */
-         angleWithSep: function angleWithSep(x, y) {
-           return Math.atan2(this.x * y - this.y * x, this.x * x + this.y * y);
-         },
-         _matMult: function _matMult(m) {
-           var x = m[0] * this.x + m[1] * this.y,
-               y = m[2] * this.x + m[3] * this.y;
-           this.x = x;
-           this.y = y;
-           return this;
-         },
-         _add: function _add(p) {
-           this.x += p.x;
-           this.y += p.y;
-           return this;
-         },
-         _sub: function _sub(p) {
-           this.x -= p.x;
-           this.y -= p.y;
-           return this;
-         },
-         _mult: function _mult(k) {
-           this.x *= k;
-           this.y *= k;
-           return this;
-         },
-         _div: function _div(k) {
-           this.x /= k;
-           this.y /= k;
-           return this;
-         },
-         _multByPoint: function _multByPoint(p) {
-           this.x *= p.x;
-           this.y *= p.y;
-           return this;
-         },
-         _divByPoint: function _divByPoint(p) {
-           this.x /= p.x;
-           this.y /= p.y;
-           return this;
-         },
-         _unit: function _unit() {
-           this._div(this.mag());
+       var _nominatimCache;

 
 

-           return this;
+       var serviceNominatim = {
+         init: function init() {
+           _inflight$2 = {};
+           _nominatimCache = new RBush();

          },
          },

-         _perp: function _perp() {
-           var y = this.y;
-           this.y = this.x;
-           this.x = -y;
-           return this;
+         reset: function reset() {
+           Object.values(_inflight$2).forEach(function (controller) {
+             controller.abort();
+           });
+           _inflight$2 = {};
+           _nominatimCache = new RBush();

          },
          },

-         _rotate: function _rotate(angle) {
-           var cos = Math.cos(angle),
-               sin = Math.sin(angle),
-               x = cos * this.x - sin * this.y,
-               y = sin * this.x + cos * this.y;
-           this.x = x;
-           this.y = y;
-           return this;
+         countryCode: function countryCode(location, callback) {
+           this.reverse(location, function (err, result) {
+             if (err) {
+               return callback(err);
+             } else if (result.address) {
+               return callback(null, result.address.country_code);
+             } else {
+               return callback('Unable to geocode', null);
+             }
+           });

          },
          },

-         _rotateAround: function _rotateAround(angle, p) {
-           var cos = Math.cos(angle),
-               sin = Math.sin(angle),
-               x = p.x + cos * (this.x - p.x) - sin * (this.y - p.y),
-               y = p.y + sin * (this.x - p.x) + cos * (this.y - p.y);
-           this.x = x;
-           this.y = y;
-           return this;
+         reverse: function reverse(loc, callback) {
+           var cached = _nominatimCache.search({
+             minX: loc[0],
+             minY: loc[1],
+             maxX: loc[0],
+             maxY: loc[1]
+           });
+
+           if (cached.length > 0) {
+             if (callback) callback(null, cached[0].data);
+             return;
+           }
+
+           var params = {
+             zoom: 13,
+             format: 'json',
+             addressdetails: 1,
+             lat: loc[1],
+             lon: loc[0]
+           };
+           var url = apibase$2 + 'reverse?' + utilQsString(params);
+           if (_inflight$2[url]) return;
+           var controller = new AbortController();
+           _inflight$2[url] = controller;
+           d3_json(url, {
+             signal: controller.signal
+           }).then(function (result) {
+             delete _inflight$2[url];
+
+             if (result && result.error) {
+               throw new Error(result.error);
+             }
+
+             var extent = geoExtent(loc).padByMeters(200);
+
+             _nominatimCache.insert(Object.assign(extent.bbox(), {
+               data: result
+             }));
+
+             if (callback) callback(null, result);
+           })["catch"](function (err) {
+             delete _inflight$2[url];
+             if (err.name === 'AbortError') return;
+             if (callback) callback(err.message);
+           });

          },
          },

-         _round: function _round() {
-           this.x = Math.round(this.x);
-           this.y = Math.round(this.y);
-           return this;
+         search: function search(val, callback) {
+           var searchVal = encodeURIComponent(val);
+           var url = apibase$2 + 'search/' + searchVal + '?limit=10&format=json';
+           if (_inflight$2[url]) return;
+           var controller = new AbortController();
+           _inflight$2[url] = controller;
+           d3_json(url, {
+             signal: controller.signal
+           }).then(function (result) {
+             delete _inflight$2[url];
+
+             if (result && result.error) {
+               throw new Error(result.error);
+             }
+
+             if (callback) callback(null, result);
+           })["catch"](function (err) {
+             delete _inflight$2[url];
+             if (err.name === 'AbortError') return;
+             if (callback) callback(err.message);
+           });

          }
        };
          }
        };

-       /**
-        * Construct a point from an array if necessary, otherwise if the input
-        * is already a Point, or an unknown type, return it unchanged
-        * @param {Array<Number>|Point|*} a any kind of input value
-        * @return {Point} constructed point, or passed-through value.
-        * @example
-        * // this
-        * var point = Point.convert([0, 1]);
-        * // is equivalent to
-        * var point = new Point(0, 1);
-        */

 
 

-       Point.convert = function (a) {
-         if (a instanceof Point) {
-           return a;
-         }
+       // for punction see https://stackoverflow.com/a/21224179

 
 

-         if (Array.isArray(a)) {
-           return new Point(a[0], a[1]);
-         }
+       function simplify$1(str) {
+         if (typeof str !== 'string') return '';
+         return diacritics.remove(str.replace(/&/g, 'and').replace(/İ/ig, 'i') // for BİM, İşbank - #5017
+         .replace(/[\s\-=_!"#%'*{},.\/:;?\(\)\[\]@\\$\^*+<>«»~`’\u00a1\u00a7\u00b6\u00b7\u00bf\u037e\u0387\u055a-\u055f\u0589\u05c0\u05c3\u05c6\u05f3\u05f4\u0609\u060a\u060c\u060d\u061b\u061e\u061f\u066a-\u066d\u06d4\u0700-\u070d\u07f7-\u07f9\u0830-\u083e\u085e\u0964\u0965\u0970\u0af0\u0df4\u0e4f\u0e5a\u0e5b\u0f04-\u0f12\u0f14\u0f85\u0fd0-\u0fd4\u0fd9\u0fda\u104a-\u104f\u10fb\u1360-\u1368\u166d\u166e\u16eb-\u16ed\u1735\u1736\u17d4-\u17d6\u17d8-\u17da\u1800-\u1805\u1807-\u180a\u1944\u1945\u1a1e\u1a1f\u1aa0-\u1aa6\u1aa8-\u1aad\u1b5a-\u1b60\u1bfc-\u1bff\u1c3b-\u1c3f\u1c7e\u1c7f\u1cc0-\u1cc7\u1cd3\u2000-\u206f\u2cf9-\u2cfc\u2cfe\u2cff\u2d70\u2e00-\u2e7f\u3001-\u3003\u303d\u30fb\ua4fe\ua4ff\ua60d-\ua60f\ua673\ua67e\ua6f2-\ua6f7\ua874-\ua877\ua8ce\ua8cf\ua8f8-\ua8fa\ua92e\ua92f\ua95f\ua9c1-\ua9cd\ua9de\ua9df\uaa5c-\uaa5f\uaade\uaadf\uaaf0\uaaf1\uabeb\ufe10-\ufe16\ufe19\ufe30\ufe45\ufe46\ufe49-\ufe4c\ufe50-\ufe52\ufe54-\ufe57\ufe5f-\ufe61\ufe68\ufe6a\ufe6b\ufeff\uff01-\uff03\uff05-\uff07\uff0a\uff0c\uff0e\uff0f\uff1a\uff1b\uff1f\uff20\uff3c\uff61\uff64\uff65]+/g, '').toLowerCase());
+       }

 
 

-         return a;
+       var matchGroups$1 = {adult_gaming_centre:["amenity/casino","amenity/gambling","leisure/adult_gaming_centre"],beauty:["shop/beauty","shop/hairdresser_supply"],bed:["shop/bed","shop/furniture"],beverages:["shop/alcohol","shop/beer","shop/beverages","shop/wine"],camping:["leisure/park","tourism/camp_site","tourism/caravan_site"],car_parts:["shop/car_parts","shop/car_repair","shop/tires","shop/tyres"],clinic:["amenity/clinic","amenity/doctors","healthcare/clinic","healthcare/dialysis"],confectionery:["shop/candy","shop/chocolate","shop/confectionery"],convenience:["shop/beauty","shop/chemist","shop/convenience","shop/cosmetics","shop/grocery","shop/newsagent"],coworking:["amenity/coworking_space","office/coworking","office/coworking_space"],dentist:["amenity/dentist","amenity/doctors","healthcare/dentist"],electronics:["office/telecommunication","shop/computer","shop/electronics","shop/hifi","shop/mobile","shop/mobile_phone","shop/telecommunication"],fabric:["shop/fabric","shop/haberdashery","shop/sewing"],fashion:["shop/accessories","shop/bag","shop/botique","shop/clothes","shop/department_store","shop/fashion","shop/fashion_accessories","shop/sports","shop/shoes"],financial:["amenity/bank","office/accountant","office/financial","office/financial_advisor","office/tax_advisor","shop/tax"],fitness:["leisure/fitness_centre","leisure/fitness_center","leisure/sports_centre","leisure/sports_center"],food:["amenity/pub","amenity/bar","amenity/cafe","amenity/fast_food","amenity/ice_cream","amenity/restaurant","shop/bakery","shop/ice_cream","shop/pastry","shop/tea","shop/coffee"],fuel:["amenity/fuel","shop/gas","shop/convenience;gas","shop/gas;convenience"],gift:["shop/gift","shop/card","shop/cards","shop/stationery"],hardware:["shop/bathroom_furnishing","shop/carpet","shop/diy","shop/doityourself","shop/doors","shop/electrical","shop/flooring","shop/hardware","shop/hardware_store","shop/power_tools","shop/tool_hire","shop/tools","shop/trade"],health_food:["shop/health","shop/health_food","shop/herbalist","shop/nutrition_supplements"],hobby:["shop/electronics","shop/hobby","shop/books","shop/games","shop/collector","shop/toys","shop/model","shop/video_games","shop/anime"],hospital:["amenity/doctors","amenity/hospital","healthcare/hospital"],houseware:["shop/houseware","shop/interior_decoration"],lifeboat_station:["amenity/lifeboat_station","emergency/lifeboat_station","emergency/marine_rescue"],lodging:["tourism/hotel","tourism/motel"],money_transfer:["amenity/money_transfer","shop/money_transfer"],office_supplies:["shop/office_supplies","shop/stationary","shop/stationery"],outdoor:["shop/outdoor","shop/sports"],pharmacy:["amenity/doctors","amenity/pharmacy","healthcare/pharmacy"],playground:["amenity/theme_park","leisure/amusement_arcade","leisure/playground"],rental:["amenity/bicycle_rental","amenity/boat_rental","amenity/car_rental","amenity/truck_rental","amenity/vehicle_rental","shop/rental"],school:["amenity/childcare","amenity/college","amenity/kindergarten","amenity/language_school","amenity/prep_school","amenity/school","amenity/university"],supermarket:["shop/food","shop/frozen_food","shop/greengrocer","shop/grocery","shop/supermarket","shop/wholesale"],variety_store:["shop/variety_store","shop/discount","shop/convenience"],vending:["amenity/vending_machine","shop/vending_machine"],storage:["shop/storage_units","shop/storage_rental"],weight_loss:["amenity/doctors","amenity/weight_clinic","healthcare/counselling","leisure/fitness_centre","office/therapist","shop/beauty","shop/diet","shop/food","shop/health_food","shop/herbalist","shop/nutrition","shop/nutrition_supplements","shop/weight_loss"],wholesale:["shop/wholesale","shop/supermarket","shop/department_store"]};
+       var matchGroupsJSON = {
+       matchGroups: matchGroups$1

        };
 
        };
 

-       var vectortilefeature = VectorTileFeature;
+       var genericWords = ["^(barn|bazaa?r|bench|bou?tique|building|casa|church)$","^(baseball|basketball|football|soccer|softball|tennis(halle)?)\\s?(field|court)?$","^(club|green|out|ware)\\s?house$","^(driveway|el árbol|fountain|golf|government|graveyard)$","^(hofladen|librairie|magazine?|maison)$","^(mobile home|skate)?\\s?park$","^(n\\s?\\/?\\s?a|name|no\\s?name|none|null|temporary|test|unknown)$","^(obuwie|pond|pool|sale|shops?|sklep|stores?)$","^\\?+$","^tattoo( studio)?$","^windmill$","^церковная( лавка)?$"];
+       var genericWordsJSON = {
+       genericWords: genericWords
+       };

 
 

-       function VectorTileFeature(pbf, end, extent, keys, values) {
-         // Public
-         this.properties = {};
-         this.extent = extent;
-         this.type = 0; // Private
+       var trees$1 = {brands:{emoji:"🍔",mainTag:"brand:wikidata",sourceTags:["brand","name"],nameTags:{primary:"^(name|name:\\w+)$",alternate:"^(brand|brand:\\w+|operator|operator:\\w+|\\w+_name|\\w+_name:\\w+)$"}},flags:{emoji:"🚩",mainTag:"flag:wikidata",nameTags:{primary:"^(flag:name|flag:name:\\w+)$",alternate:"^(country|country:\\w+|flag|flag:\\w+|subject|subject:\\w+)$"}},operators:{emoji:"💼",mainTag:"operator:wikidata",sourceTags:["operator"],nameTags:{primary:"^(name|name:\\w+|operator|operator:\\w+)$",alternate:"^(brand|brand:\\w+|\\w+_name|\\w+_name:\\w+)$"}},transit:{emoji:"🚇",mainTag:"network:wikidata",sourceTags:["network"],nameTags:{primary:"^network$",alternate:"^(operator|operator:\\w+|network:\\w+|\\w+_name|\\w+_name:\\w+)$"}}};
+       var treesJSON = {
+       trees: trees$1
+       };

 
 

-         this._pbf = pbf;
-         this._geometry = -1;
-         this._keys = keys;
-         this._values = values;
-         pbf.readFields(readFeature, this, end);
-       }
+       var matchGroups = matchGroupsJSON.matchGroups;
+       var trees = treesJSON.trees;
+       var Matcher = /*#__PURE__*/function () {
+         //
+         // `constructor`
+         // initialize the genericWords regexes
+         function Matcher() {
+           var _this = this;

 
 

-       function readFeature(tag, feature, pbf) {
-         if (tag == 1) feature.id = pbf.readVarint();else if (tag == 2) readTag(pbf, feature);else if (tag == 3) feature.type = pbf.readVarint();else if (tag == 4) feature._geometry = pbf.pos;
-       }
+           _classCallCheck$1(this, Matcher);

 
 

-       function readTag(pbf, feature) {
-         var end = pbf.readVarint() + pbf.pos;
+           // The `matchIndex` is a specialized structure that allows us to quickly answer
+           //   _"Given a [key/value tagpair, name, location], what canonical items (brands etc) can match it?"_
+           //
+           // The index contains all valid combinations of k/v tagpairs and names
+           // matchIndex:
+           // {
+           //   'k/v': {
+           //     'primary':         Map (String 'nsimple' -> Set (itemIDs…),   // matches for tags like `name`, `name:xx`, etc.
+           //     'alternate':       Map (String 'nsimple' -> Set (itemIDs…),   // matches for tags like `alt_name`, `brand`, etc.
+           //     'excludeNamed':    Map (String 'pattern' -> RegExp),
+           //     'excludeGeneric':  Map (String 'pattern' -> RegExp)
+           //   },
+           // }
+           //
+           // {
+           //   'amenity/bank': {
+           //     'primary': {
+           //       'firstbank':              Set ("firstbank-978cca", "firstbank-9794e6", "firstbank-f17495", …),
+           //       …
+           //     },
+           //     'alternate': {
+           //       '1stbank':                Set ("firstbank-f17495"),
+           //       …
+           //     }
+           //   },
+           //   'shop/supermarket': {
+           //     'primary': {
+           //       'coop':                   Set ("coop-76454b", "coop-ebf2d9", "coop-36e991", …),
+           //       'coopfood':               Set ("coopfood-a8278b", …),
+           //       …
+           //     },
+           //     'alternate': {
+           //       'coop':                   Set ("coopfood-a8278b", …),
+           //       'federatedcooperatives':  Set ("coop-76454b", …),
+           //       'thecooperative':         Set ("coopfood-a8278b", …),
+           //       …
+           //     }
+           //   }
+           // }
+           //
+           this.matchIndex = undefined; // The `genericWords` structure matches the contents of genericWords.json to instantiated RegExp objects
+           // Map (String 'pattern' -> RegExp),
+
+           this.genericWords = new Map();
+           (genericWordsJSON.genericWords || []).forEach(function (s) {
+             return _this.genericWords.set(s, new RegExp(s, 'i'));
+           }); // The `itemLocation` structure maps itemIDs to locationSetIDs:
+           // {
+           //   'firstbank-f17495':  '+[first_bank_western_us.geojson]',
+           //   'firstbank-978cca':  '+[first_bank_carolinas.geojson]',
+           //   'coop-76454b':       '+[Q16]',
+           //   'coopfood-a8278b':   '+[Q23666]',
+           //   …
+           // }

 
 

-         while (pbf.pos < end) {
-           var key = feature._keys[pbf.readVarint()],
-               value = feature._values[pbf.readVarint()];
+           this.itemLocation = undefined; // The `locationSets` structure maps locationSetIDs to *resolved* locationSets:
+           // {
+           //   '+[first_bank_western_us.geojson]':  GeoJSON {…},
+           //   '+[first_bank_carolinas.geojson]':   GeoJSON {…},
+           //   '+[Q16]':                            GeoJSON {…},
+           //   '+[Q23666]':                         GeoJSON {…},
+           //   …
+           // }

 
 

-           feature.properties[key] = value;
-         }
-       }
+           this.locationSets = undefined; // The `locationIndex` is an instance of which-polygon spatial index for the locationSets.

 
 

-       VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];
+           this.locationIndex = undefined; // Array of match conflict pairs (currently unused)

 
 

-       VectorTileFeature.prototype.loadGeometry = function () {
-         var pbf = this._pbf;
-         pbf.pos = this._geometry;
-         var end = pbf.readVarint() + pbf.pos,
-             cmd = 1,
-             length = 0,
-             x = 0,
-             y = 0,
-             lines = [],
-             line;
+           this.warnings = [];
+         } //
+         // `buildMatchIndex()`
+         // Call this to prepare the matcher for use
+         //
+         // `data` needs to be an Object indexed on a 'tree/key/value' path.
+         // (e.g. cache filled by `fileTree.read` or data found in `dist/nsi.json`)
+         // {
+         //    'brands/amenity/bank': { properties: {}, items: [ {}, {}, … ] },
+         //    'brands/amenity/bar':  { properties: {}, items: [ {}, {}, … ] },
+         //    …
+         // }
+         //

 
 

-         while (pbf.pos < end) {
-           if (length <= 0) {
-             var cmdLen = pbf.readVarint();
-             cmd = cmdLen & 0x7;
-             length = cmdLen >> 3;
-           }

 
 

-           length--;
+         _createClass$1(Matcher, [{
+           key: "buildMatchIndex",
+           value: function buildMatchIndex(data) {
+             var that = this;
+             if (that.matchIndex) return; // it was built already
+
+             that.matchIndex = new Map();
+             Object.keys(data).forEach(function (tkv) {
+               var category = data[tkv];
+               var parts = tkv.split('/', 3); // tkv = "tree/key/value"
+
+               var t = parts[0];
+               var k = parts[1];
+               var v = parts[2];
+               var thiskv = "".concat(k, "/").concat(v);
+               var tree = trees[t];
+               var branch = that.matchIndex.get(thiskv);
+
+               if (!branch) {
+                 branch = {
+                   primary: new Map(),
+                   alternate: new Map(),
+                   excludeGeneric: new Map(),
+                   excludeNamed: new Map()
+                 };
+                 that.matchIndex.set(thiskv, branch);
+               } // ADD EXCLUSIONS

 
 

-           if (cmd === 1 || cmd === 2) {
-             x += pbf.readSVarint();
-             y += pbf.readSVarint();

 
 

-             if (cmd === 1) {
-               // moveTo
-               if (line) lines.push(line);
-               line = [];
-             }
+               var properties = category.properties || {};
+               var exclude = properties.exclude || {};
+               (exclude.generic || []).forEach(function (s) {
+                 return branch.excludeGeneric.set(s, new RegExp(s, 'i'));
+               });
+               (exclude.named || []).forEach(function (s) {
+                 return branch.excludeNamed.set(s, new RegExp(s, 'i'));
+               });
+               var excludeRegexes = [].concat(_toConsumableArray(branch.excludeGeneric.values()), _toConsumableArray(branch.excludeNamed.values())); // ADD ITEMS

 
 

-             line.push(new pointGeometry(x, y));
-           } else if (cmd === 7) {
-             // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
-             if (line) {
-               line.push(line[0].clone()); // closePolygon
-             }
-           } else {
-             throw new Error('unknown command ' + cmd);
-           }
-         }
+               var items = category.items;
+               if (!Array.isArray(items) || !items.length) return; // Primary name patterns, match tags to take first
+               //  e.g. `name`, `name:ru`

 
 

-         if (line) lines.push(line);
-         return lines;
-       };
+               var primaryName = new RegExp(tree.nameTags.primary, 'i'); // Alternate name patterns, match tags to consider after primary
+               //  e.g. `alt_name`, `short_name`, `brand`, `brand:ru`, etc..

 
 

-       VectorTileFeature.prototype.bbox = function () {
-         var pbf = this._pbf;
-         pbf.pos = this._geometry;
-         var end = pbf.readVarint() + pbf.pos,
-             cmd = 1,
-             length = 0,
-             x = 0,
-             y = 0,
-             x1 = Infinity,
-             x2 = -Infinity,
-             y1 = Infinity,
-             y2 = -Infinity;
+               var alternateName = new RegExp(tree.nameTags.alternate, 'i'); // There are a few exceptions to the name matching regexes.
+               // Usually a tag suffix contains a language code like `name:en`, `name:ru`
+               // but we want to exclude things like `operator:type`, `name:etymology`, etc..

 
 

-         while (pbf.pos < end) {
-           if (length <= 0) {
-             var cmdLen = pbf.readVarint();
-             cmd = cmdLen & 0x7;
-             length = cmdLen >> 3;
-           }
+               var notName = /:(colou?r|type|forward|backward|left|right|etymology|pronunciation|wikipedia)$/i; // For certain categories we do not want to match generic KV pairs like `building/yes` or `amenity/yes`

 
 

-           length--;
+               var skipGenericKV = skipGenericKVMatches(t, k, v); // We will collect the generic KV pairs anyway (for the purpose of filtering them out of matchTags)

 
 

-           if (cmd === 1 || cmd === 2) {
-             x += pbf.readSVarint();
-             y += pbf.readSVarint();
-             if (x < x1) x1 = x;
-             if (x > x2) x2 = x;
-             if (y < y1) y1 = y;
-             if (y > y2) y2 = y;
-           } else if (cmd !== 7) {
-             throw new Error('unknown command ' + cmd);
-           }
-         }
+               var genericKV = new Set(["".concat(k, "/yes"), "building/yes"]); // Collect alternate tagpairs for this kv category from matchGroups.
+               // We might also pick up a few more generic KVs (like `shop/yes`)

 
 

-         return [x1, y1, x2, y2];
-       };
+               var matchGroupKV = new Set();
+               Object.values(matchGroups).forEach(function (matchGroup) {
+                 var inGroup = matchGroup.some(function (otherkv) {
+                   return otherkv === thiskv;
+                 });
+                 if (!inGroup) return;
+                 matchGroup.forEach(function (otherkv) {
+                   if (otherkv === thiskv) return; // skip self

 
 

-       VectorTileFeature.prototype.toGeoJSON = function (x, y, z) {
-         var size = this.extent * Math.pow(2, z),
-             x0 = this.extent * x,
-             y0 = this.extent * y,
-             coords = this.loadGeometry(),
-             type = VectorTileFeature.types[this.type],
-             i,
-             j;
+                   matchGroupKV.add(otherkv);
+                   var otherk = otherkv.split('/', 2)[0]; // we might pick up a `shop/yes`

 
 

-         function project(line) {
-           for (var j = 0; j < line.length; j++) {
-             var p = line[j],
-                 y2 = 180 - (p.y + y0) * 360 / size;
-             line[j] = [(p.x + x0) * 360 / size - 180, 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90];
-           }
-         }
+                   genericKV.add("".concat(otherk, "/yes"));
+                 });
+               }); // For each item, insert all [key, value, name] combinations into the match index

 
 

-         switch (this.type) {
-           case 1:
-             var points = [];
+               items.forEach(function (item) {
+                 if (!item.id) return; // Automatically remove redundant `matchTags` - #3417
+                 // (i.e. This kv is already covered by matchGroups, so it doesn't need to be in `item.matchTags`)

 
 

-             for (i = 0; i < coords.length; i++) {
-               points[i] = coords[i][0];
-             }
+                 if (Array.isArray(item.matchTags) && item.matchTags.length) {
+                   item.matchTags = item.matchTags.filter(function (matchTag) {
+                     return !matchGroupKV.has(matchTag) && !genericKV.has(matchTag);
+                   });
+                   if (!item.matchTags.length) delete item.matchTags;
+                 } // key/value tagpairs to insert into the match index..

 
 

-             coords = points;
-             project(coords);
-             break;

 
 

-           case 2:
-             for (i = 0; i < coords.length; i++) {
-               project(coords[i]);
-             }
+                 var kvTags = ["".concat(thiskv)].concat(item.matchTags || []);

 
 

-             break;
+                 if (!skipGenericKV) {
+                   kvTags = kvTags.concat(Array.from(genericKV)); // #3454 - match some generic tags
+                 } // Index all the namelike tag values

 
 

-           case 3:
-             coords = classifyRings(coords);

 
 

-             for (i = 0; i < coords.length; i++) {
-               for (j = 0; j < coords[i].length; j++) {
-                 project(coords[i][j]);
-               }
-             }
+                 Object.keys(item.tags).forEach(function (osmkey) {
+                   if (notName.test(osmkey)) return; // osmkey is not a namelike tag, skip

 
 

-             break;
-         }
+                   var osmvalue = item.tags[osmkey];
+                   if (!osmvalue || excludeRegexes.some(function (regex) {
+                     return regex.test(osmvalue);
+                   })) return; // osmvalue missing or excluded

 
 

-         if (coords.length === 1) {
-           coords = coords[0];
-         } else {
-           type = 'Multi' + type;
-         }
+                   if (primaryName.test(osmkey)) {
+                     kvTags.forEach(function (kv) {
+                       return insertName('primary', kv, simplify$1(osmvalue), item.id);
+                     });
+                   } else if (alternateName.test(osmkey)) {
+                     kvTags.forEach(function (kv) {
+                       return insertName('alternate', kv, simplify$1(osmvalue), item.id);
+                     });
+                   }
+                 }); // Index `matchNames` after indexing all other names..
+
+                 var keepMatchNames = new Set();
+                 (item.matchNames || []).forEach(function (matchName) {
+                   // If this matchname isn't already indexed, add it to the alternate index
+                   var nsimple = simplify$1(matchName);
+                   kvTags.forEach(function (kv) {
+                     var branch = that.matchIndex.get(kv);
+                     var primaryLeaf = branch && branch.primary.get(nsimple);
+                     var alternateLeaf = branch && branch.alternate.get(nsimple);
+                     var inPrimary = primaryLeaf && primaryLeaf.has(item.id);
+                     var inAlternate = alternateLeaf && alternateLeaf.has(item.id);
+
+                     if (!inPrimary && !inAlternate) {
+                       insertName('alternate', kv, nsimple, item.id);
+                       keepMatchNames.add(matchName);
+                     }
+                   });
+                 }); // Automatically remove redundant `matchNames` - #3417
+                 // (i.e. This name got indexed some other way, so it doesn't need to be in `item.matchNames`)

 
 

-         var result = {
-           type: "Feature",
-           geometry: {
-             type: type,
-             coordinates: coords
-           },
-           properties: this.properties
-         };
+                 if (keepMatchNames.size) {
+                   item.matchNames = Array.from(keepMatchNames);
+                 } else {
+                   delete item.matchNames;
+                 }
+               }); // each item
+             }); // each tkv
+             // Insert this item into the matchIndex
+
+             function insertName(which, kv, nsimple, itemID) {
+               if (!nsimple) return;
+               var branch = that.matchIndex.get(kv);
+
+               if (!branch) {
+                 branch = {
+                   primary: new Map(),
+                   alternate: new Map(),
+                   excludeGeneric: new Map(),
+                   excludeNamed: new Map()
+                 };
+                 that.matchIndex.set(kv, branch);
+               }

 
 

-         if ('id' in this) {
-           result.id = this.id;
-         }
+               var leaf = branch[which].get(nsimple);

 
 

-         return result;
-       }; // classifies an array of rings into polygons with outer rings and holes
+               if (!leaf) {
+                 leaf = new Set();
+                 branch[which].set(nsimple, leaf);
+               }

 
 

+               leaf.add(itemID); // insert
+             } // For certain categories we do not want to match generic KV pairs like `building/yes` or `amenity/yes`

 
 

-       function classifyRings(rings) {
-         var len = rings.length;
-         if (len <= 1) return [rings];
-         var polygons = [],
-             polygon,
-             ccw;

 
 

-         for (var i = 0; i < len; i++) {
-           var area = signedArea$1(rings[i]);
-           if (area === 0) continue;
-           if (ccw === undefined) ccw = area < 0;
+             function skipGenericKVMatches(t, k, v) {
+               return t === 'flags' || t === 'transit' || k === 'landuse' || v === 'atm' || v === 'bicycle_parking' || v === 'car_sharing' || v === 'caravan_site' || v === 'charging_station' || v === 'dog_park' || v === 'parking' || v === 'phone' || v === 'playground' || v === 'post_box' || v === 'public_bookcase' || v === 'recycling' || v === 'vending_machine';
+             }
+           } //
+           // `buildLocationIndex()`
+           // Call this to prepare a which-polygon location index.
+           // This *resolves* all the locationSets into GeoJSON, which takes some time.
+           // You can skip this step if you don't care about matching within a location.
+           //
+           // `data` needs to be an Object indexed on a 'tree/key/value' path.
+           // (e.g. cache filled by `fileTree.read` or data found in `dist/nsi.json`)
+           // {
+           //    'brands/amenity/bank': { properties: {}, items: [ {}, {}, … ] },
+           //    'brands/amenity/bar':  { properties: {}, items: [ {}, {}, … ] },
+           //    …
+           // }
+           //

 
 

-           if (ccw === area < 0) {
-             if (polygon) polygons.push(polygon);
-             polygon = [rings[i]];
-           } else {
-             polygon.push(rings[i]);
-           }
-         }
+         }, {
+           key: "buildLocationIndex",
+           value: function buildLocationIndex(data, loco) {
+             var that = this;
+             if (that.locationIndex) return; // it was built already

 
 

-         if (polygon) polygons.push(polygon);
-         return polygons;
-       }
+             that.itemLocation = new Map();
+             that.locationSets = new Map();
+             Object.keys(data).forEach(function (tkv) {
+               var items = data[tkv].items;
+               if (!Array.isArray(items) || !items.length) return;
+               items.forEach(function (item) {
+                 if (that.itemLocation.has(item.id)) return; // we've seen item id already - shouldn't be possible?

 
 

-       function signedArea$1(ring) {
-         var sum = 0;
+                 var resolved;

 
 

-         for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
-           p1 = ring[i];
-           p2 = ring[j];
-           sum += (p2.x - p1.x) * (p1.y + p2.y);
-         }
+                 try {
+                   resolved = loco.resolveLocationSet(item.locationSet); // resolve a feature for this locationSet
+                 } catch (err) {
+                   console.warn("buildLocationIndex: ".concat(err.message)); // couldn't resolve
+                 }

 
 

-         return sum;
-       }
+                 if (!resolved || !resolved.id) return;
+                 that.itemLocation.set(item.id, resolved.id); // link it to the item

 
 

-       var vectortilelayer = VectorTileLayer;
+                 if (that.locationSets.has(resolved.id)) return; // we've seen this locationSet feature before..
+                 // First time seeing this locationSet feature, make a copy and add to locationSet cache..

 
 

-       function VectorTileLayer(pbf, end) {
-         // Public
-         this.version = 1;
-         this.name = null;
-         this.extent = 4096;
-         this.length = 0; // Private
+                 var feature = _cloneDeep(resolved.feature);

 
 

-         this._pbf = pbf;
-         this._keys = [];
-         this._values = [];
-         this._features = [];
-         pbf.readFields(readLayer, this, end);
-         this.length = this._features.length;
-       }
+                 feature.id = resolved.id; // Important: always use the locationSet `id` (`+[Q30]`), not the feature `id` (`Q30`)

 
 

-       function readLayer(tag, layer, pbf) {
-         if (tag === 15) layer.version = pbf.readVarint();else if (tag === 1) layer.name = pbf.readString();else if (tag === 5) layer.extent = pbf.readVarint();else if (tag === 2) layer._features.push(pbf.pos);else if (tag === 3) layer._keys.push(pbf.readString());else if (tag === 4) layer._values.push(readValueMessage(pbf));
-       }
+                 feature.properties.id = resolved.id;

 
 

-       function readValueMessage(pbf) {
-         var value = null,
-             end = pbf.readVarint() + pbf.pos;
+                 if (!feature.geometry.coordinates.length || !feature.properties.area) {
+                   console.warn("buildLocationIndex: locationSet ".concat(resolved.id, " for ").concat(item.id, " resolves to an empty feature:"));
+                   console.warn(JSON.stringify(feature));
+                   return;
+                 }

 
 

-         while (pbf.pos < end) {
-           var tag = pbf.readVarint() >> 3;
-           value = tag === 1 ? pbf.readString() : tag === 2 ? pbf.readFloat() : tag === 3 ? pbf.readDouble() : tag === 4 ? pbf.readVarint64() : tag === 5 ? pbf.readVarint() : tag === 6 ? pbf.readSVarint() : tag === 7 ? pbf.readBoolean() : null;
-         }
+                 that.locationSets.set(resolved.id, feature);
+               });
+             });
+             that.locationIndex = whichPolygon_1({
+               type: 'FeatureCollection',
+               features: _toConsumableArray(that.locationSets.values())
+             });

 
 

-         return value;
-       } // return feature `i` from this layer as a `VectorTileFeature`
+             function _cloneDeep(obj) {
+               return JSON.parse(JSON.stringify(obj));
+             }
+           } //
+           // `match()`
+           // Pass parts and return an Array of matches.
+           // `k` - key
+           // `v` - value
+           // `n` - namelike
+           // `loc` - optional - [lon,lat] location to search
+           //
+           // 1. If the [k,v,n] tuple matches a canonical item…
+           // Return an Array of match results.
+           // Each result will include the area in km² that the item is valid.
+           //
+           // Order of results:
+           // Primary ordering will be on the "match" column:
+           //   "primary" - where the query matches the `name` tag, followed by
+           //   "alternate" - where the query matches an alternate name tag (e.g. short_name, brand, operator, etc)
+           // Secondary ordering will be on the "area" column:
+           //   "area descending" if no location was provided, (worldwide before local)
+           //   "area ascending" if location was provided (local before worldwide)
+           //
+           // [
+           //   { match: 'primary',   itemID: String,  area: Number,  kv: String,  nsimple: String },
+           //   { match: 'primary',   itemID: String,  area: Number,  kv: String,  nsimple: String },
+           //   { match: 'alternate', itemID: String,  area: Number,  kv: String,  nsimple: String },
+           //   { match: 'alternate', itemID: String,  area: Number,  kv: String,  nsimple: String },
+           //   …
+           // ]
+           //
+           // -or-
+           //
+           // 2. If the [k,v,n] tuple matches an exclude pattern…
+           // Return an Array with a single exclude result, either
+           //
+           // [ { match: 'excludeGeneric', pattern: String,  kv: String } ]  // "generic" e.g. "Food Court"
+           //   or
+           // [ { match: 'excludeNamed', pattern: String,  kv: String } ]    // "named", e.g. "Kebabai"
+           //
+           // About results
+           //   "generic" - a generic word that is probably not really a name.
+           //     For these, iD should warn the user "Hey don't put 'food court' in the name tag".
+           //   "named" - a real name like "Kebabai" that is just common, but not a brand.
+           //     For these, iD should just let it be. We don't include these in NSI, but we don't want to nag users about it either.
+           //
+           // -or-
+           //
+           // 3. If the [k,v,n] tuple matches nothing of any kind, return `null`
+           //
+           //

 
 

+         }, {
+           key: "match",
+           value: function match(k, v, n, loc) {
+             var that = this;

 
 

-       VectorTileLayer.prototype.feature = function (i) {
-         if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');
-         this._pbf.pos = this._features[i];
+             if (!that.matchIndex) {
+               throw new Error('match:  matchIndex not built.');
+             } // If we were supplied a location, and a that.locationIndex has been set up,
+             // get the locationSets that are valid there so we can filter results.

 
 

-         var end = this._pbf.readVarint() + this._pbf.pos;

 
 

-         return new vectortilefeature(this._pbf, end, this.extent, this._keys, this._values);
-       };
+             var matchLocations;

 
 

-       var vectortile = VectorTile;
+             if (Array.isArray(loc) && that.locationIndex) {
+               // which-polygon query returns an array of GeoJSON properties, pass true to return all results
+               matchLocations = that.locationIndex([loc[0], loc[1], loc[0], loc[1]], true);
+             }

 
 

-       function VectorTile(pbf, end) {
-         this.layers = pbf.readFields(readTile, {}, end);
-       }
+             var nsimple = simplify$1(n);
+             var seen = new Set();
+             var results = [];
+             gatherResults('primary');
+             gatherResults('alternate');
+             if (results.length) return results;
+             gatherResults('exclude');
+             return results.length ? results : null;
+
+             function gatherResults(which) {
+               // First try an exact match on k/v
+               var kv = "".concat(k, "/").concat(v);
+               var didMatch = tryMatch(which, kv);
+               if (didMatch) return; // If that didn't work, look in match groups for other pairs considered equivalent to k/v..
+
+               for (var mg in matchGroups) {
+                 var matchGroup = matchGroups[mg];
+                 var inGroup = matchGroup.some(function (otherkv) {
+                   return otherkv === kv;
+                 });
+                 if (!inGroup) continue;

 
 

-       function readTile(tag, layers, pbf) {
-         if (tag === 3) {
-           var layer = new vectortilelayer(pbf, pbf.readVarint() + pbf.pos);
-           if (layer.length) layers[layer.name] = layer;
-         }
-       }
+                 for (var i = 0; i < matchGroup.length; i++) {
+                   var otherkv = matchGroup[i];
+                   if (otherkv === kv) continue; // skip self

 
 

-       var VectorTile$1 = vectortile;
-       var VectorTileFeature$1 = vectortilefeature;
-       var VectorTileLayer$1 = vectortilelayer;
-       var vectorTile = {
-         VectorTile: VectorTile$1,
-         VectorTileFeature: VectorTileFeature$1,
-         VectorTileLayer: VectorTileLayer$1
-       };
+                   didMatch = tryMatch(which, otherkv);
+                   if (didMatch) return;
+                 }
+               } // If finished 'exclude' pass and still haven't matched anything, try the global `genericWords.json` patterns

 
 

-       var tiler$7 = utilTiler().tileSize(512).margin(1);
-       var dispatch$8 = dispatch('loadedData');

 
 

-       var _vtCache;
+               if (which === 'exclude') {
+                 var regex = _toConsumableArray(that.genericWords.values()).find(function (regex) {
+                   return regex.test(n);
+                 });

 
 

-       function abortRequest$7(controller) {
-         controller.abort();
-       }
+                 if (regex) {
+                   results.push({
+                     match: 'excludeGeneric',
+                     pattern: String(regex)
+                   }); // note no `branch`, no `kv`

 
 

-       function vtToGeoJSON(data, tile, mergeCache) {
-         var vectorTile$1 = new vectorTile.VectorTile(new pbf(data));
-         var layers = Object.keys(vectorTile$1.layers);
+                   return;
+                 }
+               }
+             }

 
 

-         if (!Array.isArray(layers)) {
-           layers = [layers];
-         }
+             function tryMatch(which, kv) {
+               var branch = that.matchIndex.get(kv);
+               if (!branch) return;

 
 

-         var features = [];
-         layers.forEach(function (layerID) {
-           var layer = vectorTile$1.layers[layerID];
+               if (which === 'exclude') {
+                 // Test name `n` against named and generic exclude patterns
+                 var regex = _toConsumableArray(branch.excludeNamed.values()).find(function (regex) {
+                   return regex.test(n);
+                 });
+
+                 if (regex) {
+                   results.push({
+                     match: 'excludeNamed',
+                     pattern: String(regex),
+                     kv: kv
+                   });
+                   return;
+                 }

 
 

-           if (layer) {
-             for (var i = 0; i < layer.length; i++) {
-               var feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);
-               var geometry = feature.geometry; // Treat all Polygons as MultiPolygons
+                 regex = _toConsumableArray(branch.excludeGeneric.values()).find(function (regex) {
+                   return regex.test(n);
+                 });

 
 

-               if (geometry.type === 'Polygon') {
-                 geometry.type = 'MultiPolygon';
-                 geometry.coordinates = [geometry.coordinates];
+                 if (regex) {
+                   results.push({
+                     match: 'excludeGeneric',
+                     pattern: String(regex),
+                     kv: kv
+                   });
+                   return;
+                 }
+
+                 return;

                }
 
                }
 

-               var isClipped = false; // Clip to tile bounds
+               var leaf = branch[which].get(nsimple);
+               if (!leaf || !leaf.size) return; // If we get here, we matched something..
+               // Prepare the results, calculate areas (if location index was set up)

 
 

-               if (geometry.type === 'MultiPolygon') {
-                 var featureClip = turf_bboxClip(feature, tile.extent.rectangle());
+               var hits = Array.from(leaf).map(function (itemID) {
+                 var area = Infinity;

 
 

-                 if (!fastDeepEqual(feature.geometry, featureClip.geometry)) {
-                   // feature = featureClip;
-                   isClipped = true;
+                 if (that.itemLocation && that.locationSets) {
+                   var location = that.locationSets.get(that.itemLocation.get(itemID));
+                   area = location && location.properties.area || Infinity;

                  }
 
                  }
 

-                 if (!feature.geometry.coordinates.length) continue; // not actually on this tile
-
-                 if (!feature.geometry.coordinates[0].length) continue; // not actually on this tile
-               } // Generate some unique IDs and add some metadata
+                 return {
+                   match: which,
+                   itemID: itemID,
+                   area: area,
+                   kv: kv,
+                   nsimple: nsimple
+                 };
+               });
+               var sortFn = byAreaDescending; // Filter the match to include only results valid in the requested `loc`..

 
 

+               if (matchLocations) {
+                 hits = hits.filter(isValidLocation);
+                 sortFn = byAreaAscending;
+               }

 
 

-               var featurehash = utilHashcode(fastJsonStableStringify(feature));
-               var propertyhash = utilHashcode(fastJsonStableStringify(feature.properties || {}));
-               feature.__layerID__ = layerID.replace(/[^_a-zA-Z0-9\-]/g, '_');
-               feature.__featurehash__ = featurehash;
-               feature.__propertyhash__ = propertyhash;
-               features.push(feature); // Clipped Polygons at same zoom with identical properties can get merged
+               if (!hits.length) return; // push results

 
 

-               if (isClipped && geometry.type === 'MultiPolygon') {
-                 var merged = mergeCache[propertyhash];
+               hits.sort(sortFn).forEach(function (hit) {
+                 if (seen.has(hit.itemID)) return;
+                 seen.add(hit.itemID);
+                 results.push(hit);
+               });
+               return true;

 
 

-                 if (merged && merged.length) {
-                   var other = merged[0];
-                   var coords = union(feature.geometry.coordinates, other.geometry.coordinates);
+               function isValidLocation(hit) {
+                 if (!that.itemLocation) return true;
+                 return matchLocations.find(function (props) {
+                   return props.id === that.itemLocation.get(hit.itemID);
+                 });
+               } // Sort smaller (more local) locations first.

 
 

-                   if (!coords || !coords.length) {
-                     continue; // something failed in martinez union
-                   }

 
 

-                   merged.push(feature);
+               function byAreaAscending(hitA, hitB) {
+                 return hitA.area - hitB.area;
+               } // Sort larger (more worldwide) locations first.

 
 

-                   for (var j = 0; j < merged.length; j++) {
-                     // all these features get...
-                     merged[j].geometry.coordinates = coords; // same coords

 
 

-                     merged[j].__featurehash__ = featurehash; // same hash, so deduplication works
-                   }
-                 } else {
-                   mergeCache[propertyhash] = [feature];
-                 }
+               function byAreaDescending(hitA, hitB) {
+                 return hitB.area - hitA.area;

                }
              }
                }
              }

+           } //
+           // `getWarnings()`
+           // Return any warnings discovered when buiding the index.
+           // (currently this does nothing)
+           //
+
+         }, {
+           key: "getWarnings",
+           value: function getWarnings() {
+             return this.warnings;

            }
            }

-         });
-         return features;
+         }]);
+
+         return Matcher;
+       }();
+
+       /**
+        * Checks if `value` is the
+        * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
+        * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+        *
+        * @static
+        * @memberOf _
+        * @since 0.1.0
+        * @category Lang
+        * @param {*} value The value to check.
+        * @returns {boolean} Returns `true` if `value` is an object, else `false`.
+        * @example
+        *
+        * _.isObject({});
+        * // => true
+        *
+        * _.isObject([1, 2, 3]);
+        * // => true
+        *
+        * _.isObject(_.noop);
+        * // => true
+        *
+        * _.isObject(null);
+        * // => false
+        */
+       function isObject$2(value) {
+         var type = _typeof(value);
+
+         return value != null && (type == 'object' || type == 'function');

        }
 
        }
 

-       function loadTile(source, tile) {
-         if (source.loaded[tile.id] || source.inflight[tile.id]) return;
-         var url = source.template.replace('{x}', tile.xyz[0]).replace('{y}', tile.xyz[1]) // TMS-flipped y coordinate
-         .replace(/\{[t-]y\}/, Math.pow(2, tile.xyz[2]) - tile.xyz[1] - 1).replace(/\{z(oom)?\}/, tile.xyz[2]).replace(/\{switch:([^}]+)\}/, function (s, r) {
-           var subdomains = r.split(',');
-           return subdomains[(tile.xyz[0] + tile.xyz[1]) % subdomains.length];
-         });
-         var controller = new AbortController();
-         source.inflight[tile.id] = controller;
-         fetch(url, {
-           signal: controller.signal
-         }).then(function (response) {
-           if (!response.ok) {
-             throw new Error(response.status + ' ' + response.statusText);
-           }
+       /** Detect free variable `global` from Node.js. */
+       var freeGlobal = (typeof global === "undefined" ? "undefined" : _typeof(global)) == 'object' && global && global.Object === Object && global;

 
 

-           source.loaded[tile.id] = [];
-           delete source.inflight[tile.id];
-           return response.arrayBuffer();
-         }).then(function (data) {
-           if (!data) {
-             throw new Error('No Data');
-           }
+       /** Detect free variable `self`. */

 
 

-           var z = tile.xyz[2];
+       var freeSelf = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' && self && self.Object === Object && self;
+       /** Used as a reference to the global object. */

 
 

-           if (!source.canMerge[z]) {
-             source.canMerge[z] = {}; // initialize mergeCache
-           }
+       var root = freeGlobal || freeSelf || Function('return this')();

 
 

-           source.loaded[tile.id] = vtToGeoJSON(data, tile, source.canMerge[z]);
-           dispatch$8.call('loadedData');
-         })["catch"](function () {
-           source.loaded[tile.id] = [];
-           delete source.inflight[tile.id];
-         });
-       }
+       /**
+        * Gets the timestamp of the number of milliseconds that have elapsed since
+        * the Unix epoch (1 January 1970 00:00:00 UTC).
+        *
+        * @static
+        * @memberOf _
+        * @since 2.4.0
+        * @category Date
+        * @returns {number} Returns the timestamp.
+        * @example
+        *
+        * _.defer(function(stamp) {
+        *   console.log(_.now() - stamp);
+        * }, _.now());
+        * // => Logs the number of milliseconds it took for the deferred invocation.
+        */

 
 

-       var serviceVectorTile = {
-         init: function init() {
-           if (!_vtCache) {
-             this.reset();
-           }
+       var now = function now() {
+         return root.Date.now();
+       };

 
 

-           this.event = utilRebind(this, dispatch$8, 'on');
-         },
-         reset: function reset() {
-           for (var sourceID in _vtCache) {
-             var source = _vtCache[sourceID];
+       /** Used to match a single whitespace character. */
+       var reWhitespace = /\s/;
+       /**
+        * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
+        * character of `string`.
+        *
+        * @private
+        * @param {string} string The string to inspect.
+        * @returns {number} Returns the index of the last non-whitespace character.
+        */

 
 

-             if (source && source.inflight) {
-               Object.values(source.inflight).forEach(abortRequest$7);
-             }
-           }
+       function trimmedEndIndex(string) {
+         var index = string.length;

 
 

-           _vtCache = {};
-         },
-         addSource: function addSource(sourceID, template) {
-           _vtCache[sourceID] = {
-             template: template,
-             inflight: {},
-             loaded: {},
-             canMerge: {}
-           };
-           return _vtCache[sourceID];
-         },
-         data: function data(sourceID, projection) {
-           var source = _vtCache[sourceID];
-           if (!source) return [];
-           var tiles = tiler$7.getTiles(projection);
-           var seen = {};
-           var results = [];
+         while (index-- && reWhitespace.test(string.charAt(index))) {}

 
 

-           for (var i = 0; i < tiles.length; i++) {
-             var features = source.loaded[tiles[i].id];
-             if (!features || !features.length) continue;
+         return index;
+       }

 
 

-             for (var j = 0; j < features.length; j++) {
-               var feature = features[j];
-               var hash = feature.__featurehash__;
-               if (seen[hash]) continue;
-               seen[hash] = true; // return a shallow copy, because the hash may change
-               // later if this feature gets merged with another
+       /** Used to match leading whitespace. */

 
 

-               results.push(Object.assign({}, feature)); // shallow copy
-             }
-           }
+       var reTrimStart = /^\s+/;
+       /**
+        * The base implementation of `_.trim`.
+        *
+        * @private
+        * @param {string} string The string to trim.
+        * @returns {string} Returns the trimmed string.
+        */

 
 

-           return results;
-         },
-         loadTiles: function loadTiles(sourceID, template, projection) {
-           var source = _vtCache[sourceID];
+       function baseTrim(string) {
+         return string ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '') : string;
+       }

 
 

-           if (!source) {
-             source = this.addSource(sourceID, template);
-           }
+       /** Built-in value references. */

 
 

-           var tiles = tiler$7.getTiles(projection); // abort inflight requests that are no longer needed
+       var _Symbol = root.Symbol;

 
 

-           Object.keys(source.inflight).forEach(function (k) {
-             var wanted = tiles.find(function (tile) {
-               return k === tile.id;
-             });
+       /** Used for built-in method references. */

 
 

-             if (!wanted) {
-               abortRequest$7(source.inflight[k]);
-               delete source.inflight[k];
-             }
-           });
-           tiles.forEach(function (tile) {
-             loadTile(source, tile);
-           });
-         },
-         cache: function cache() {
-           return _vtCache;
-         }
-       };
+       var objectProto$1 = Object.prototype;
+       /** Used to check objects for own properties. */

 
 

-       var apibase$3 = 'https://www.wikidata.org/w/api.php?';
-       var _wikidataCache = {};
-       var serviceWikidata = {
-         init: function init() {},
-         reset: function reset() {
-           _wikidataCache = {};
-         },
-         // Search for Wikidata items matching the query
-         itemsForSearchQuery: function itemsForSearchQuery(query, callback) {
-           if (!query) {
-             if (callback) callback('No query', {});
-             return;
-           }
+       var hasOwnProperty$2 = objectProto$1.hasOwnProperty;
+       /**
+        * Used to resolve the
+        * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+        * of values.
+        */

 
 

-           var lang = this.languagesToQuery()[0];
-           var url = apibase$3 + utilQsString({
-             action: 'wbsearchentities',
-             format: 'json',
-             formatversion: 2,
-             search: query,
-             type: 'item',
-             // the language to search
-             language: lang,
-             // the language for the label and description in the result
-             uselang: lang,
-             limit: 10,
-             origin: '*'
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             }
+       var nativeObjectToString$1 = objectProto$1.toString;
+       /** Built-in value references. */

 
 

-             if (callback) callback(null, result.search || {});
-           })["catch"](function (err) {
-             if (callback) callback(err.message, {});
-           });
-         },
-         // Given a Wikipedia language and article title,
-         // return an array of corresponding Wikidata entities.
-         itemsByTitle: function itemsByTitle(lang, title, callback) {
-           if (!title) {
-             if (callback) callback('No title', {});
-             return;
-           }
+       var symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;
+       /**
+        * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
+        *
+        * @private
+        * @param {*} value The value to query.
+        * @returns {string} Returns the raw `toStringTag`.
+        */

 
 

-           lang = lang || 'en';
-           var url = apibase$3 + utilQsString({
-             action: 'wbgetentities',
-             format: 'json',
-             formatversion: 2,
-             sites: lang.replace(/-/g, '_') + 'wiki',
-             titles: title,
-             languages: 'en',
-             // shrink response by filtering to one language
-             origin: '*'
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             }
+       function getRawTag(value) {
+         var isOwn = hasOwnProperty$2.call(value, symToStringTag$1),
+             tag = value[symToStringTag$1];

 
 

-             if (callback) callback(null, result.entities || {});
-           })["catch"](function (err) {
-             if (callback) callback(err.message, {});
-           });
-         },
-         languagesToQuery: function languagesToQuery() {
-           return _mainLocalizer.localeCodes().map(function (code) {
-             return code.toLowerCase();
-           }).filter(function (code) {
-             // HACK: en-us isn't a wikidata language. We should really be filtering by
-             // the languages known to be supported by wikidata.
-             return code !== 'en-us';
-           });
-         },
-         entityByQID: function entityByQID(qid, callback) {
-           if (!qid) {
-             callback('No qid', {});
-             return;
-           }
+         try {
+           value[symToStringTag$1] = undefined;
+           var unmasked = true;
+         } catch (e) {}

 
 

-           if (_wikidataCache[qid]) {
-             if (callback) callback(null, _wikidataCache[qid]);
-             return;
+         var result = nativeObjectToString$1.call(value);
+
+         if (unmasked) {
+           if (isOwn) {
+             value[symToStringTag$1] = tag;
+           } else {
+             delete value[symToStringTag$1];

            }
            }

+         }

 
 

-           var langs = this.languagesToQuery();
-           var url = apibase$3 + utilQsString({
-             action: 'wbgetentities',
-             format: 'json',
-             formatversion: 2,
-             ids: qid,
-             props: 'labels|descriptions|claims|sitelinks',
-             sitefilter: langs.map(function (d) {
-               return d + 'wiki';
-             }).join('|'),
-             languages: langs.join('|'),
-             languagefallback: 1,
-             origin: '*'
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             }
+         return result;
+       }

 
 

-             if (callback) callback(null, result.entities[qid] || {});
-           })["catch"](function (err) {
-             if (callback) callback(err.message, {});
-           });
-         },
-         // Pass `params` object of the form:
-         // {
-         //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
-         // }
-         //
-         // Get an result object used to display tag documentation
-         // {
-         //   title:        'string',
-         //   description:  'string',
-         //   editURL:      'string',
-         //   imageURL:     'string',
-         //   wiki:         { title: 'string', text: 'string', url: 'string' }
-         // }
-         //
-         getDocs: function getDocs(params, callback) {
-           var langs = this.languagesToQuery();
-           this.entityByQID(params.qid, function (err, entity) {
-             if (err || !entity) {
-               callback(err || 'No entity');
-               return;
-             }
+       /** Used for built-in method references. */
+       var objectProto = Object.prototype;
+       /**
+        * Used to resolve the
+        * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+        * of values.
+        */

 
 

-             var i;
-             var description;
+       var nativeObjectToString = objectProto.toString;
+       /**
+        * Converts `value` to a string using `Object.prototype.toString`.
+        *
+        * @private
+        * @param {*} value The value to convert.
+        * @returns {string} Returns the converted string.
+        */

 
 

-             for (i in langs) {
-               var code = langs[i];
+       function objectToString(value) {
+         return nativeObjectToString.call(value);
+       }

 
 

-               if (entity.descriptions[code] && entity.descriptions[code].language === code) {
-                 description = entity.descriptions[code];
-                 break;
-               }
-             }
+       /** `Object#toString` result references. */

 
 

-             if (!description && Object.values(entity.descriptions).length) description = Object.values(entity.descriptions)[0]; // prepare result
+       var nullTag = '[object Null]',
+           undefinedTag = '[object Undefined]';
+       /** Built-in value references. */

 
 

-             var result = {
-               title: entity.id,
-               description: description ? description.value : '',
-               descriptionLocaleCode: description ? description.language : '',
-               editURL: 'https://www.wikidata.org/wiki/' + entity.id
-             }; // add image
+       var symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;
+       /**
+        * The base implementation of `getTag` without fallbacks for buggy environments.
+        *
+        * @private
+        * @param {*} value The value to query.
+        * @returns {string} Returns the `toStringTag`.
+        */

 
 

-             if (entity.claims) {
-               var imageroot = 'https://commons.wikimedia.org/w/index.php';
-               var props = ['P154', 'P18']; // logo image, image
+       function baseGetTag(value) {
+         if (value == null) {
+           return value === undefined ? undefinedTag : nullTag;
+         }

 
 

-               var prop, image;
+         return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);
+       }

 
 

-               for (i = 0; i < props.length; i++) {
-                 prop = entity.claims[props[i]];
+       /**
+        * Checks if `value` is object-like. A value is object-like if it's not `null`
+        * and has a `typeof` result of "object".
+        *
+        * @static
+        * @memberOf _
+        * @since 4.0.0
+        * @category Lang
+        * @param {*} value The value to check.
+        * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
+        * @example
+        *
+        * _.isObjectLike({});
+        * // => true
+        *
+        * _.isObjectLike([1, 2, 3]);
+        * // => true
+        *
+        * _.isObjectLike(_.noop);
+        * // => false
+        *
+        * _.isObjectLike(null);
+        * // => false
+        */
+       function isObjectLike(value) {
+         return value != null && _typeof(value) == 'object';
+       }

 
 

-                 if (prop && Object.keys(prop).length > 0) {
-                   image = prop[Object.keys(prop)[0]].mainsnak.datavalue.value;
+       /** `Object#toString` result references. */

 
 

-                   if (image) {
-                     result.imageURL = imageroot + '?' + utilQsString({
-                       title: 'Special:Redirect/file/' + image,
-                       width: 400
-                     });
-                     break;
-                   }
-                 }
-               }
-             }
+       var symbolTag = '[object Symbol]';
+       /**
+        * Checks if `value` is classified as a `Symbol` primitive or object.
+        *
+        * @static
+        * @memberOf _
+        * @since 4.0.0
+        * @category Lang
+        * @param {*} value The value to check.
+        * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
+        * @example
+        *
+        * _.isSymbol(Symbol.iterator);
+        * // => true
+        *
+        * _.isSymbol('abc');
+        * // => false
+        */

 
 

-             if (entity.sitelinks) {
-               var englishLocale = _mainLocalizer.languageCode().toLowerCase() === 'en'; // must be one of these that we requested..
+       function isSymbol(value) {
+         return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
+       }

 
 

-               for (i = 0; i < langs.length; i++) {
-                 // check each, in order of preference
-                 var w = langs[i] + 'wiki';
+       /** Used as references for various `Number` constants. */

 
 

-                 if (entity.sitelinks[w]) {
-                   var title = entity.sitelinks[w].title;
-                   var tKey = 'inspector.wiki_reference';
+       var NAN = 0 / 0;
+       /** Used to detect bad signed hexadecimal string values. */
+
+       var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
+       /** Used to detect binary string values. */
+
+       var reIsBinary = /^0b[01]+$/i;
+       /** Used to detect octal string values. */
+
+       var reIsOctal = /^0o[0-7]+$/i;
+       /** Built-in method references without a dependency on `root`. */
+
+       var freeParseInt = parseInt;
+       /**
+        * Converts `value` to a number.
+        *
+        * @static
+        * @memberOf _
+        * @since 4.0.0
+        * @category Lang
+        * @param {*} value The value to process.
+        * @returns {number} Returns the number.
+        * @example
+        *
+        * _.toNumber(3.2);
+        * // => 3.2
+        *
+        * _.toNumber(Number.MIN_VALUE);
+        * // => 5e-324
+        *
+        * _.toNumber(Infinity);
+        * // => Infinity
+        *
+        * _.toNumber('3.2');
+        * // => 3.2
+        */

 
 

-                   if (!englishLocale && langs[i] === 'en') {
-                     // user's locale isn't English but
-                     tKey = 'inspector.wiki_en_reference'; // we are sending them to enwiki anyway..
-                   }
+       function toNumber(value) {
+         if (typeof value == 'number') {
+           return value;
+         }

 
 

-                   result.wiki = {
-                     title: title,
-                     text: tKey,
-                     url: 'https://' + langs[i] + '.wikipedia.org/wiki/' + title.replace(/ /g, '_')
-                   };
-                   break;
-                 }
-               }
-             }
+         if (isSymbol(value)) {
+           return NAN;
+         }

 
 

-             callback(null, result);
-           });
+         if (isObject$2(value)) {
+           var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
+           value = isObject$2(other) ? other + '' : other;

          }
          }

-       };

 
 

-       var endpoint = 'https://en.wikipedia.org/w/api.php?';
-       var serviceWikipedia = {
-         init: function init() {},
-         reset: function reset() {},
-         search: function search(lang, query, callback) {
-           if (!query) {
-             if (callback) callback('No Query', []);
-             return;
-           }
+         if (typeof value != 'string') {
+           return value === 0 ? value : +value;
+         }

 
 

-           lang = lang || 'en';
-           var url = endpoint.replace('en', lang) + utilQsString({
-             action: 'query',
-             list: 'search',
-             srlimit: '10',
-             srinfo: 'suggestion',
-             format: 'json',
-             origin: '*',
-             srsearch: query
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             } else if (!result || !result.query || !result.query.search) {
-               throw new Error('No Results');
-             }
+         value = baseTrim(value);
+         var isBinary = reIsBinary.test(value);
+         return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN : +value;
+       }

 
 

-             if (callback) {
-               var titles = result.query.search.map(function (d) {
-                 return d.title;
-               });
-               callback(null, titles);
-             }
-           })["catch"](function (err) {
-             if (callback) callback(err, []);
-           });
-         },
-         suggestions: function suggestions(lang, query, callback) {
-           if (!query) {
-             if (callback) callback('', []);
-             return;
-           }
+       /** Error message constants. */

 
 

-           lang = lang || 'en';
-           var url = endpoint.replace('en', lang) + utilQsString({
-             action: 'opensearch',
-             namespace: 0,
-             suggest: '',
-             format: 'json',
-             origin: '*',
-             search: query
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             } else if (!result || result.length < 2) {
-               throw new Error('No Results');
-             }
+       var FUNC_ERROR_TEXT$1 = 'Expected a function';
+       /* Built-in method references for those with the same name as other `lodash` methods. */

 
 

-             if (callback) callback(null, result[1] || []);
-           })["catch"](function (err) {
-             if (callback) callback(err.message, []);
-           });
-         },
-         translations: function translations(lang, title, callback) {
-           if (!title) {
-             if (callback) callback('No Title');
-             return;
-           }
+       var nativeMax = Math.max,
+           nativeMin = Math.min;
+       /**
+        * Creates a debounced function that delays invoking `func` until after `wait`
+        * milliseconds have elapsed since the last time the debounced function was
+        * invoked. The debounced function comes with a `cancel` method to cancel
+        * delayed `func` invocations and a `flush` method to immediately invoke them.
+        * Provide `options` to indicate whether `func` should be invoked on the
+        * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
+        * with the last arguments provided to the debounced function. Subsequent
+        * calls to the debounced function return the result of the last `func`
+        * invocation.
+        *
+        * **Note:** If `leading` and `trailing` options are `true`, `func` is
+        * invoked on the trailing edge of the timeout only if the debounced function
+        * is invoked more than once during the `wait` timeout.
+        *
+        * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
+        * until to the next tick, similar to `setTimeout` with a timeout of `0`.
+        *
+        * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
+        * for details over the differences between `_.debounce` and `_.throttle`.
+        *
+        * @static
+        * @memberOf _
+        * @since 0.1.0
+        * @category Function
+        * @param {Function} func The function to debounce.
+        * @param {number} [wait=0] The number of milliseconds to delay.
+        * @param {Object} [options={}] The options object.
+        * @param {boolean} [options.leading=false]
+        *  Specify invoking on the leading edge of the timeout.
+        * @param {number} [options.maxWait]
+        *  The maximum time `func` is allowed to be delayed before it's invoked.
+        * @param {boolean} [options.trailing=true]
+        *  Specify invoking on the trailing edge of the timeout.
+        * @returns {Function} Returns the new debounced function.
+        * @example
+        *
+        * // Avoid costly calculations while the window size is in flux.
+        * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
+        *
+        * // Invoke `sendMail` when clicked, debouncing subsequent calls.
+        * jQuery(element).on('click', _.debounce(sendMail, 300, {
+        *   'leading': true,
+        *   'trailing': false
+        * }));
+        *
+        * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
+        * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
+        * var source = new EventSource('/stream');
+        * jQuery(source).on('message', debounced);
+        *
+        * // Cancel the trailing debounced invocation.
+        * jQuery(window).on('popstate', debounced.cancel);
+        */

 
 

-           var url = endpoint.replace('en', lang) + utilQsString({
-             action: 'query',
-             prop: 'langlinks',
-             format: 'json',
-             origin: '*',
-             lllimit: 500,
-             titles: title
-           });
-           d3_json(url).then(function (result) {
-             if (result && result.error) {
-               throw new Error(result.error);
-             } else if (!result || !result.query || !result.query.pages) {
-               throw new Error('No Results');
-             }
+       function debounce(func, wait, options) {
+         var lastArgs,
+             lastThis,
+             maxWait,
+             result,
+             timerId,
+             lastCallTime,
+             lastInvokeTime = 0,
+             leading = false,
+             maxing = false,
+             trailing = true;

 
 

-             if (callback) {
-               var list = result.query.pages[Object.keys(result.query.pages)[0]];
-               var translations = {};
+         if (typeof func != 'function') {
+           throw new TypeError(FUNC_ERROR_TEXT$1);
+         }

 
 

-               if (list && list.langlinks) {
-                 list.langlinks.forEach(function (d) {
-                   translations[d.lang] = d['*'];
-                 });
-               }
+         wait = toNumber(wait) || 0;

 
 

-               callback(null, translations);
-             }
-           })["catch"](function (err) {
-             if (callback) callback(err.message);
-           });
+         if (isObject$2(options)) {
+           leading = !!options.leading;
+           maxing = 'maxWait' in options;
+           maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
+           trailing = 'trailing' in options ? !!options.trailing : trailing;

          }
          }

-       };

 
 

-       var services = {
-         geocoder: serviceNominatim,
-         keepRight: serviceKeepRight,
-         improveOSM: serviceImproveOSM,
-         osmose: serviceOsmose,
-         mapillary: serviceMapillary,
-         openstreetcam: serviceOpenstreetcam,
-         osm: serviceOsm,
-         osmWikibase: serviceOsmWikibase,
-         maprules: serviceMapRules,
-         streetside: serviceStreetside,
-         taginfo: serviceTaginfo,
-         vectorTile: serviceVectorTile,
-         wikidata: serviceWikidata,
-         wikipedia: serviceWikipedia
-       };
+         function invokeFunc(time) {
+           var args = lastArgs,
+               thisArg = lastThis;
+           lastArgs = lastThis = undefined;
+           lastInvokeTime = time;
+           result = func.apply(thisArg, args);
+           return result;
+         }

 
 

-       function svgIcon(name, svgklass, useklass) {
-         return function drawIcon(selection) {
-           selection.selectAll('svg.icon' + (svgklass ? '.' + svgklass.split(' ')[0] : '')).data([0]).enter().append('svg').attr('class', 'icon ' + (svgklass || '')).append('use').attr('xlink:href', name).attr('class', useklass);
-         };
-       }
+         function leadingEdge(time) {
+           // Reset any `maxWait` timer.
+           lastInvokeTime = time; // Start the timer for the trailing edge.

 
 

-       function uiNoteComments() {
-         var _note;
+           timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.

 
 

-         function noteComments(selection) {
-           if (_note.isNew()) return; // don't draw .comments-container
+           return leading ? invokeFunc(time) : result;
+         }

 
 

-           var comments = selection.selectAll('.comments-container').data([0]);
-           comments = comments.enter().append('div').attr('class', 'comments-container').merge(comments);
-           var commentEnter = comments.selectAll('.comment').data(_note.comments).enter().append('div').attr('class', 'comment');
-           commentEnter.append('div').attr('class', function (d) {
-             return 'comment-avatar user-' + d.uid;
-           }).call(svgIcon('#iD-icon-avatar', 'comment-avatar-icon'));
-           var mainEnter = commentEnter.append('div').attr('class', 'comment-main');
-           var metadataEnter = mainEnter.append('div').attr('class', 'comment-metadata');
-           metadataEnter.append('div').attr('class', 'comment-author').each(function (d) {
-             var selection = select(this);
-             var osm = services.osm;
+         function remainingWait(time) {
+           var timeSinceLastCall = time - lastCallTime,
+               timeSinceLastInvoke = time - lastInvokeTime,
+               timeWaiting = wait - timeSinceLastCall;
+           return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
+         }

 
 

-             if (osm && d.user) {
-               selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.user)).attr('target', '_blank');
-             }
+         function shouldInvoke(time) {
+           var timeSinceLastCall = time - lastCallTime,
+               timeSinceLastInvoke = time - lastInvokeTime; // Either this is the first call, activity has stopped and we're at the
+           // trailing edge, the system time has gone backwards and we're treating
+           // it as the trailing edge, or we've hit the `maxWait` limit.

 
 

-             selection.html(function (d) {
-               return d.user || _t.html('note.anonymous');
-             });
-           });
-           metadataEnter.append('div').attr('class', 'comment-date').html(function (d) {
-             return _t('note.status.' + d.action, {
-               when: localeDateString(d.date)
-             });
-           });
-           mainEnter.append('div').attr('class', 'comment-text').html(function (d) {
-             return d.html;
-           }).selectAll('a').attr('rel', 'noopener nofollow').attr('target', '_blank');
-           comments.call(replaceAvatars);
+           return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;

          }
 
          }
 

-         function replaceAvatars(selection) {
-           var showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
-           var osm = services.osm;
-           if (showThirdPartyIcons !== 'true' || !osm) return;
-           var uids = {}; // gather uids in the comment thread
-
-           _note.comments.forEach(function (d) {
-             if (d.uid) uids[d.uid] = true;
-           });
+         function timerExpired() {
+           var time = now();

 
 

-           Object.keys(uids).forEach(function (uid) {
-             osm.loadUser(uid, function (err, user) {
-               if (!user || !user.image_url) return;
-               selection.selectAll('.comment-avatar.user-' + uid).html('').append('img').attr('class', 'icon comment-avatar-icon').attr('src', user.image_url).attr('alt', user.display_name);
-             });
-           });
-         }
+           if (shouldInvoke(time)) {
+             return trailingEdge(time);
+           } // Restart the timer.

 
 

-         function localeDateString(s) {
-           if (!s) return null;
-           var options = {
-             day: 'numeric',
-             month: 'short',
-             year: 'numeric'
-           };
-           s = s.replace(/-/g, '/'); // fix browser-specific Date() issues

 
 

-           var d = new Date(s);
-           if (isNaN(d.getTime())) return null;
-           return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+           timerId = setTimeout(timerExpired, remainingWait(time));

          }
 
          }
 

-         noteComments.note = function (val) {
-           if (!arguments.length) return _note;
-           _note = val;
-           return noteComments;
-         };
+         function trailingEdge(time) {
+           timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been
+           // debounced at least once.

 
 

-         return noteComments;
-       }
+           if (trailing && lastArgs) {
+             return invokeFunc(time);
+           }

 
 

-       function uiNoteHeader() {
-         var _note;
+           lastArgs = lastThis = undefined;
+           return result;
+         }

 
 

-         function noteHeader(selection) {
-           var header = selection.selectAll('.note-header').data(_note ? [_note] : [], function (d) {
-             return d.status + d.id;
-           });
-           header.exit().remove();
-           var headerEnter = header.enter().append('div').attr('class', 'note-header');
-           var iconEnter = headerEnter.append('div').attr('class', function (d) {
-             return 'note-header-icon ' + d.status;
-           }).classed('new', function (d) {
-             return d.id < 0;
-           });
-           iconEnter.append('div').attr('class', 'preset-icon-28').call(svgIcon('#iD-icon-note', 'note-fill'));
-           iconEnter.each(function (d) {
-             var statusIcon = '#iD-icon-' + (d.id < 0 ? 'plus' : d.status === 'open' ? 'close' : 'apply');
-             iconEnter.append('div').attr('class', 'note-icon-annotation').call(svgIcon(statusIcon, 'icon-annotation'));
-           });
-           headerEnter.append('div').attr('class', 'note-header-label').html(function (d) {
-             if (_note.isNew()) {
-               return _t('note.new');
-             }
+         function cancel() {
+           if (timerId !== undefined) {
+             clearTimeout(timerId);
+           }

 
 

-             return _t('note.note') + ' ' + d.id + ' ' + (d.status === 'closed' ? _t('note.closed') : '');
-           });
+           lastInvokeTime = 0;
+           lastArgs = lastCallTime = lastThis = timerId = undefined;

          }
 
          }
 

-         noteHeader.note = function (val) {
-           if (!arguments.length) return _note;
-           _note = val;
-           return noteHeader;
-         };
-
-         return noteHeader;
-       }
+         function flush() {
+           return timerId === undefined ? result : trailingEdge(now());
+         }

 
 

-       function uiNoteReport() {
-         var _note;
+         function debounced() {
+           var time = now(),
+               isInvoking = shouldInvoke(time);
+           lastArgs = arguments;
+           lastThis = this;
+           lastCallTime = time;

 
 

-         function noteReport(selection) {
-           var url;
+           if (isInvoking) {
+             if (timerId === undefined) {
+               return leadingEdge(lastCallTime);
+             }

 
 

-           if (services.osm && _note instanceof osmNote && !_note.isNew()) {
-             url = services.osm.noteReportURL(_note);
+             if (maxing) {
+               // Handle invocations in a tight loop.
+               clearTimeout(timerId);
+               timerId = setTimeout(timerExpired, wait);
+               return invokeFunc(lastCallTime);
+             }

            }
 
            }
 

-           var link = selection.selectAll('.note-report').data(url ? [url] : []); // exit
-
-           link.exit().remove(); // enter
+           if (timerId === undefined) {
+             timerId = setTimeout(timerExpired, wait);
+           }

 
 

-           var linkEnter = link.enter().append('a').attr('class', 'note-report').attr('target', '_blank').attr('href', function (d) {
-             return d;
-           }).call(svgIcon('#iD-icon-out-link', 'inline'));
-           linkEnter.append('span').html(_t.html('note.report'));
+           return result;

          }
 
          }
 

-         noteReport.note = function (val) {
-           if (!arguments.length) return _note;
-           _note = val;
-           return noteReport;
-         };
-
-         return noteReport;
+         debounced.cancel = cancel;
+         debounced.flush = flush;
+         return debounced;

        }
 
        }
 

-       function uiViewOnOSM(context) {
-         var _what; // an osmEntity or osmNote
+       /*
+           iD.coreDifference represents the difference between two graphs.
+           It knows how to calculate the set of entities that were
+           created, modified, or deleted, and also contains the logic
+           for recursively extending a difference to the complete set
+           of entities that will require a redraw, taking into account
+           child and parent relationships.
+        */

 
 

+       function coreDifference(base, head) {
+         var _changes = {};
+         var _didChange = {}; // 'addition', 'deletion', 'geometry', 'properties'

 
 

-         function viewOnOSM(selection) {
-           var url;
+         var _diff = {};

 
 

-           if (_what instanceof osmEntity) {
-             url = context.connection().entityURL(_what);
-           } else if (_what instanceof osmNote) {
-             url = context.connection().noteURL(_what);
+         function checkEntityID(id) {
+           var h = head.entities[id];
+           var b = base.entities[id];
+           if (h === b) return;
+           if (_changes[id]) return;
+
+           if (!h && b) {
+             _changes[id] = {
+               base: b,
+               head: h
+             };
+             _didChange.deletion = true;
+             return;

            }
 
            }
 

-           var data = !_what || _what.isNew() ? [] : [_what];
-           var link = selection.selectAll('.view-on-osm').data(data, function (d) {
-             return d.id;
-           }); // exit
+           if (h && !b) {
+             _changes[id] = {
+               base: b,
+               head: h
+             };
+             _didChange.addition = true;
+             return;
+           }

 
 

-           link.exit().remove(); // enter
+           if (h && b) {
+             if (h.members && b.members && !fastDeepEqual(h.members, b.members)) {
+               _changes[id] = {
+                 base: b,
+                 head: h
+               };
+               _didChange.geometry = true;
+               _didChange.properties = true;
+               return;
+             }

 
 

-           var linkEnter = link.enter().append('a').attr('class', 'view-on-osm').attr('target', '_blank').attr('href', url).call(svgIcon('#iD-icon-out-link', 'inline'));
-           linkEnter.append('span').html(_t.html('inspector.view_on_osm'));
-         }
+             if (h.loc && b.loc && !geoVecEqual(h.loc, b.loc)) {
+               _changes[id] = {
+                 base: b,
+                 head: h
+               };
+               _didChange.geometry = true;
+             }

 
 

-         viewOnOSM.what = function (_) {
-           if (!arguments.length) return _what;
-           _what = _;
-           return viewOnOSM;
-         };
+             if (h.nodes && b.nodes && !fastDeepEqual(h.nodes, b.nodes)) {
+               _changes[id] = {
+                 base: b,
+                 head: h
+               };
+               _didChange.geometry = true;
+             }

 
 

-         return viewOnOSM;
-       }
+             if (h.tags && b.tags && !fastDeepEqual(h.tags, b.tags)) {
+               _changes[id] = {
+                 base: b,
+                 head: h
+               };
+               _didChange.properties = true;
+             }
+           }
+         }

 
 

-       function uiNoteEditor(context) {
-         var dispatch$1 = dispatch('change');
-         var noteComments = uiNoteComments();
-         var noteHeader = uiNoteHeader(); // var formFields = uiFormFields(context);
+         function load() {
+           // HOT CODE: there can be many thousands of downloaded entities, so looping
+           // through them all can become a performance bottleneck. Optimize by
+           // resolving duplicates and using a basic `for` loop
+           var ids = utilArrayUniq(Object.keys(head.entities).concat(Object.keys(base.entities)));

 
 

-         var _note;
+           for (var i = 0; i < ids.length; i++) {
+             checkEntityID(ids[i]);
+           }
+         }

 
 

-         var _newNote; // var _fieldsArr;
+         load();

 
 

+         _diff.length = function length() {
+           return Object.keys(_changes).length;
+         };

 
 

-         function noteEditor(selection) {
-           var header = selection.selectAll('.header').data([0]);
-           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             context.enter(modeBrowse(context));
-           }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('note.title'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body);
-           var editor = body.selectAll('.note-editor').data([0]);
-           editor.enter().append('div').attr('class', 'modal-section note-editor').merge(editor).call(noteHeader.note(_note)).call(noteComments.note(_note)).call(noteSaveSection);
-           var footer = selection.selectAll('.footer').data([0]);
-           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnOSM(context).what(_note)).call(uiNoteReport().note(_note)); // rerender the note editor on any auth change
+         _diff.changes = function changes() {
+           return _changes;
+         };

 
 

-           var osm = services.osm;
+         _diff.didChange = _didChange; // pass true to include affected relation members

 
 

-           if (osm) {
-             osm.on('change.note-save', function () {
-               selection.call(noteEditor);
-             });
-           }
-         }
+         _diff.extantIDs = function extantIDs(includeRelMembers) {
+           var result = new Set();
+           Object.keys(_changes).forEach(function (id) {
+             if (_changes[id].head) {
+               result.add(id);
+             }

 
 

-         function noteSaveSection(selection) {
-           var isSelected = _note && _note.id === context.selectedNoteID();
+             var h = _changes[id].head;
+             var b = _changes[id].base;
+             var entity = h || b;

 
 

-           var noteSave = selection.selectAll('.note-save').data(isSelected ? [_note] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+             if (includeRelMembers && entity.type === 'relation') {
+               var mh = h ? h.members.map(function (m) {
+                 return m.id;
+               }) : [];
+               var mb = b ? b.members.map(function (m) {
+                 return m.id;
+               }) : [];
+               utilArrayUnion(mh, mb).forEach(function (memberID) {
+                 if (head.hasEntity(memberID)) {
+                   result.add(memberID);
+                 }
+               });
+             }
+           });
+           return Array.from(result);
+         };

 
 

-           noteSave.exit().remove(); // enter
+         _diff.modified = function modified() {
+           var result = [];
+           Object.values(_changes).forEach(function (change) {
+             if (change.base && change.head) {
+               result.push(change.head);
+             }
+           });
+           return result;
+         };

 
 

-           var noteSaveEnter = noteSave.enter().append('div').attr('class', 'note-save save-section cf'); // // if new note, show categories to pick from
-           // if (_note.isNew()) {
-           //     var presets = presetManager;
-           //     // NOTE: this key isn't a age and therefore there is no documentation (yet)
-           //     _fieldsArr = [
-           //         uiField(context, presets.field('category'), null, { show: true, revert: false }),
-           //     ];
-           //     _fieldsArr.forEach(function(field) {
-           //         field
-           //             .on('change', changeCategory);
-           //     });
-           //     noteSaveEnter
-           //         .append('div')
-           //         .attr('class', 'note-category')
-           //         .call(formFields.fieldsArr(_fieldsArr));
-           // }
-           // function changeCategory() {
-           //     // NOTE: perhaps there is a better way to get value
-           //     var val = context.container().select('input[name=\'category\']:checked').property('__data__') || undefined;
-           //     // store the unsaved category with the note itself
-           //     _note = _note.update({ newCategory: val });
-           //     var osm = services.osm;
-           //     if (osm) {
-           //         osm.replaceNote(_note);  // update note cache
-           //     }
-           //     noteSave
-           //         .call(noteSaveButtons);
-           // }
+         _diff.created = function created() {
+           var result = [];
+           Object.values(_changes).forEach(function (change) {
+             if (!change.base && change.head) {
+               result.push(change.head);
+             }
+           });
+           return result;
+         };

 
 

-           noteSaveEnter.append('h4').attr('class', '.note-save-header').html(function () {
-             return _note.isNew() ? _t('note.newDescription') : _t('note.newComment');
+         _diff.deleted = function deleted() {
+           var result = [];
+           Object.values(_changes).forEach(function (change) {
+             if (change.base && !change.head) {
+               result.push(change.base);
+             }

            });
            });

-           var commentTextarea = noteSaveEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('note.inputPlaceholder')).attr('maxlength', 1000).property('value', function (d) {
-             return d.newComment;
-           }).call(utilNoAuto).on('keydown.note-input', keydown).on('input.note-input', changeInput).on('blur.note-input', changeInput);
+           return result;
+         };

 
 

-           if (!commentTextarea.empty() && _newNote) {
-             // autofocus the comment field for new notes
-             commentTextarea.node().focus();
-           } // update
+         _diff.summary = function summary() {
+           var relevant = {};
+           var keys = Object.keys(_changes);

 
 

+           for (var i = 0; i < keys.length; i++) {
+             var change = _changes[keys[i]];

 
 

-           noteSave = noteSaveEnter.merge(noteSave).call(userDetails).call(noteSaveButtons); // fast submit if user presses cmd+enter
+             if (change.head && change.head.geometry(head) !== 'vertex') {
+               addEntity(change.head, head, change.base ? 'modified' : 'created');
+             } else if (change.base && change.base.geometry(base) !== 'vertex') {
+               addEntity(change.base, base, 'deleted');
+             } else if (change.base && change.head) {
+               // modified vertex
+               var moved = !fastDeepEqual(change.base.loc, change.head.loc);
+               var retagged = !fastDeepEqual(change.base.tags, change.head.tags);

 
 

-           function keydown(d3_event) {
-             if (!(d3_event.keyCode === 13 && // ↩ Return
-             d3_event.metaKey)) return;
-             var osm = services.osm;
-             if (!osm) return;
-             var hasAuth = osm.authenticated();
-             if (!hasAuth) return;
-             if (!_note.newComment) return;
-             d3_event.preventDefault();
-             select(this).on('keydown.note-input', null); // focus on button and submit
+               if (moved) {
+                 addParents(change.head);
+               }

 
 

-             window.setTimeout(function () {
-               if (_note.isNew()) {
-                 noteSave.selectAll('.save-button').node().focus();
-                 clickSave();
-               } else {
-                 noteSave.selectAll('.comment-button').node().focus();
-                 clickComment();
+               if (retagged || moved && change.head.hasInterestingTags()) {
+                 addEntity(change.head, head, 'modified');

                }
                }

-             }, 10);
+             } else if (change.head && change.head.hasInterestingTags()) {
+               // created vertex
+               addEntity(change.head, head, 'created');
+             } else if (change.base && change.base.hasInterestingTags()) {
+               // deleted vertex
+               addEntity(change.base, base, 'deleted');
+             }

            }
 
            }
 

-           function changeInput() {
-             var input = select(this);
-             var val = input.property('value').trim() || undefined; // store the unsaved comment with the note itself
+           return Object.values(relevant);

 
 

-             _note = _note.update({
-               newComment: val
-             });
-             var osm = services.osm;
+           function addEntity(entity, graph, changeType) {
+             relevant[entity.id] = {
+               entity: entity,
+               graph: graph,
+               changeType: changeType
+             };
+           }

 
 

-             if (osm) {
-               osm.replaceNote(_note); // update note cache
-             }
+           function addParents(entity) {
+             var parents = head.parentWays(entity);

 
 

-             noteSave.call(noteSaveButtons);
+             for (var j = parents.length - 1; j >= 0; j--) {
+               var parent = parents[j];
+
+               if (!(parent.id in relevant)) {
+                 addEntity(parent, head, 'modified');
+               }
+             }

            }
            }

-         }
+         }; // returns complete set of entities that require a redraw
+         //  (optionally within given `extent`)

 
 

-         function userDetails(selection) {
-           var detailSection = selection.selectAll('.detail-section').data([0]);
-           detailSection = detailSection.enter().append('div').attr('class', 'detail-section').merge(detailSection);
-           var osm = services.osm;
-           if (!osm) return; // Add warning if user is not logged in

 
 

-           var hasAuth = osm.authenticated();
-           var authWarning = detailSection.selectAll('.auth-warning').data(hasAuth ? [] : [0]);
-           authWarning.exit().transition().duration(200).style('opacity', 0).remove();
-           var authEnter = authWarning.enter().insert('div', '.tag-reference-body').attr('class', 'field-warning auth-warning').style('opacity', 0);
-           authEnter.call(svgIcon('#iD-icon-alert', 'inline'));
-           authEnter.append('span').html(_t.html('note.login'));
-           authEnter.append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('login')).on('click.note-login', function (d3_event) {
-             d3_event.preventDefault();
-             osm.authenticate();
-           });
-           authEnter.transition().duration(200).style('opacity', 1);
-           var prose = detailSection.selectAll('.note-save-prose').data(hasAuth ? [0] : []);
-           prose.exit().remove();
-           prose = prose.enter().append('p').attr('class', 'note-save-prose').html(_t.html('note.upload_explanation')).merge(prose);
-           osm.userDetails(function (err, user) {
-             if (err) return;
-             var userLink = select(document.createElement('div'));
+         _diff.complete = function complete(extent) {
+           var result = {};
+           var id, change;

 
 

-             if (user.image_url) {
-               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
+           for (id in _changes) {
+             change = _changes[id];
+             var h = change.head;
+             var b = change.base;
+             var entity = h || b;
+             var i;
+
+             if (extent && (!h || !h.intersects(extent, head)) && (!b || !b.intersects(extent, base))) {
+               continue;

              }
 
              }
 

-             userLink.append('a').attr('class', 'user-info').html(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
-             prose.html(_t.html('note.upload_explanation_with_user', {
-               user: userLink.html()
-             }));
-           });
-         }
+             result[id] = h;

 
 

-         function noteSaveButtons(selection) {
-           var osm = services.osm;
-           var hasAuth = osm && osm.authenticated();
+             if (entity.type === 'way') {
+               var nh = h ? h.nodes : [];
+               var nb = b ? b.nodes : [];
+               var diff;
+               diff = utilArrayDifference(nh, nb);

 
 

-           var isSelected = _note && _note.id === context.selectedNoteID();
+               for (i = 0; i < diff.length; i++) {
+                 result[diff[i]] = head.hasEntity(diff[i]);
+               }

 
 

-           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_note] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+               diff = utilArrayDifference(nb, nh);

 
 

-           buttonSection.exit().remove(); // enter
+               for (i = 0; i < diff.length; i++) {
+                 result[diff[i]] = head.hasEntity(diff[i]);
+               }
+             }

 
 

-           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+             if (entity.type === 'relation' && entity.isMultipolygon()) {
+               var mh = h ? h.members.map(function (m) {
+                 return m.id;
+               }) : [];
+               var mb = b ? b.members.map(function (m) {
+                 return m.id;
+               }) : [];
+               var ids = utilArrayUnion(mh, mb);

 
 

-           if (_note.isNew()) {
-             buttonEnter.append('button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
-             buttonEnter.append('button').attr('class', 'button save-button action').html(_t.html('note.save'));
-           } else {
-             buttonEnter.append('button').attr('class', 'button status-button action');
-             buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('note.comment'));
-           } // update
+               for (i = 0; i < ids.length; i++) {
+                 var member = head.hasEntity(ids[i]);
+                 if (!member) continue; // not downloaded

 
 

+                 if (extent && !member.intersects(extent, head)) continue; // not visible

 
 

-           buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.select('.cancel-button') // select and propagate data
-           .on('click.cancel', clickCancel);
-           buttonSection.select('.save-button') // select and propagate data
-           .attr('disabled', isSaveDisabled).on('click.save', clickSave);
-           buttonSection.select('.status-button') // select and propagate data
-           .attr('disabled', hasAuth ? null : true).html(function (d) {
-             var action = d.status === 'open' ? 'close' : 'open';
-             var andComment = d.newComment ? '_comment' : '';
-             return _t('note.' + action + andComment);
-           }).on('click.status', clickStatus);
-           buttonSection.select('.comment-button') // select and propagate data
-           .attr('disabled', isSaveDisabled).on('click.comment', clickComment);
+                 result[ids[i]] = member;
+               }
+             }

 
 

-           function isSaveDisabled(d) {
-             return hasAuth && d.status === 'open' && d.newComment ? null : true;
+             addParents(head.parentWays(entity), result);
+             addParents(head.parentRelations(entity), result);

            }
            }

-         }

 
 

-         function clickCancel(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button - #4641
-
-           var osm = services.osm;
+           return result;

 
 

-           if (osm) {
-             osm.removeNote(d);
+           function addParents(parents, result) {
+             for (var i = 0; i < parents.length; i++) {
+               var parent = parents[i];
+               if (parent.id in result) continue;
+               result[parent.id] = parent;
+               addParents(head.parentRelations(parent), result);
+             }

            }
            }

+         };

 
 

-           context.enter(modeBrowse(context));
-           dispatch$1.call('change');
-         }
-
-         function clickSave(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button - #4641
+         return _diff;
+       }

 
 

-           var osm = services.osm;
+       function coreTree(head) {
+         // tree for entities
+         var _rtree = new RBush();

 
 

-           if (osm) {
-             osm.postNoteCreate(d, function (err, note) {
-               dispatch$1.call('change', note);
-             });
-           }
-         }
+         var _bboxes = {}; // maintain a separate tree for granular way segments

 
 

-         function clickStatus(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button - #4641
+         var _segmentsRTree = new RBush();

 
 

-           var osm = services.osm;
+         var _segmentsBBoxes = {};
+         var _segmentsByWayId = {};
+         var tree = {};

 
 

-           if (osm) {
-             var setStatus = d.status === 'open' ? 'closed' : 'open';
-             osm.postNoteUpdate(d, setStatus, function (err, note) {
-               dispatch$1.call('change', note);
-             });
-           }
+         function entityBBox(entity) {
+           var bbox = entity.extent(head).bbox();
+           bbox.id = entity.id;
+           _bboxes[entity.id] = bbox;
+           return bbox;

          }
 
          }
 

-         function clickComment(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button - #4641
-
-           var osm = services.osm;
+         function segmentBBox(segment) {
+           var extent = segment.extent(head); // extent can be null if the node entities aren't in the graph for some reason

 
 

-           if (osm) {
-             osm.postNoteUpdate(d, d.status, function (err, note) {
-               dispatch$1.call('change', note);
-             });
-           }
+           if (!extent) return null;
+           var bbox = extent.bbox();
+           bbox.segment = segment;
+           _segmentsBBoxes[segment.id] = bbox;
+           return bbox;

          }
 
          }
 

-         noteEditor.note = function (val) {
-           if (!arguments.length) return _note;
-           _note = val;
-           return noteEditor;
-         };
+         function removeEntity(entity) {
+           _rtree.remove(_bboxes[entity.id]);

 
 

-         noteEditor.newNote = function (val) {
-           if (!arguments.length) return _newNote;
-           _newNote = val;
-           return noteEditor;
-         };
+           delete _bboxes[entity.id];

 
 

-         return utilRebind(noteEditor, dispatch$1, 'on');
-       }
+           if (_segmentsByWayId[entity.id]) {
+             _segmentsByWayId[entity.id].forEach(function (segment) {
+               _segmentsRTree.remove(_segmentsBBoxes[segment.id]);

 
 

-       function modeSelectNote(context, selectedNoteID) {
-         var mode = {
-           id: 'select-note',
-           button: 'browse'
-         };
+               delete _segmentsBBoxes[segment.id];
+             });

 
 

-         var _keybinding = utilKeybinding('select-note');
+             delete _segmentsByWayId[entity.id];
+           }
+         }

 
 

-         var _noteEditor = uiNoteEditor(context).on('change', function () {
-           context.map().pan([0, 0]); // trigger a redraw
+         function loadEntities(entities) {
+           _rtree.load(entities.map(entityBBox));

 
 

-           var note = checkSelectedID();
-           if (!note) return;
-           context.ui().sidebar.show(_noteEditor.note(note));
-         });
+           var segments = [];
+           entities.forEach(function (entity) {
+             if (entity.segments) {
+               var entitySegments = entity.segments(head); // cache these to make them easy to remove later

 
 

-         var _behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
-         var _newFeature = false;
+               _segmentsByWayId[entity.id] = entitySegments;
+               segments = segments.concat(entitySegments);
+             }
+           });
+           if (segments.length) _segmentsRTree.load(segments.map(segmentBBox).filter(Boolean));
+         }

 
 

-         function checkSelectedID() {
-           if (!services.osm) return;
-           var note = services.osm.getNote(selectedNoteID);
+         function updateParents(entity, insertions, memo) {
+           head.parentWays(entity).forEach(function (way) {
+             if (_bboxes[way.id]) {
+               removeEntity(way);
+               insertions[way.id] = way;
+             }

 
 

-           if (!note) {
-             context.enter(modeBrowse(context));
-           }
+             updateParents(way, insertions, memo);
+           });
+           head.parentRelations(entity).forEach(function (relation) {
+             if (memo[entity.id]) return;
+             memo[entity.id] = true;

 
 

-           return note;
-         } // class the note as selected, or return to browse mode if the note is gone
+             if (_bboxes[relation.id]) {
+               removeEntity(relation);
+               insertions[relation.id] = relation;
+             }

 
 

+             updateParents(relation, insertions, memo);
+           });
+         }

 
 

-         function selectNote(d3_event, drawn) {
-           if (!checkSelectedID()) return;
-           var selection = context.surface().selectAll('.layer-notes .note-' + selectedNoteID);
+         tree.rebase = function (entities, force) {
+           var insertions = {};

 
 

-           if (selection.empty()) {
-             // Return to browse mode if selected DOM elements have
-             // disappeared because the user moved them out of view..
-             var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;
+           for (var i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             if (!entity.visible) continue;

 
 

-             if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
-               context.enter(modeBrowse(context));
+             if (head.entities.hasOwnProperty(entity.id) || _bboxes[entity.id]) {
+               if (!force) {
+                 continue;
+               } else if (_bboxes[entity.id]) {
+                 removeEntity(entity);
+               }

              }
              }

-           } else {
-             selection.classed('selected', true);
-             context.selectedNoteID(selectedNoteID);
+
+             insertions[entity.id] = entity;
+             updateParents(entity, insertions, {});

            }
            }

-         }

 
 

-         function esc() {
-           if (context.container().select('.combobox').size()) return;
-           context.enter(modeBrowse(context));
-         }
+           loadEntities(Object.values(insertions));
+           return tree;
+         };

 
 

-         mode.zoomToSelected = function () {
-           if (!services.osm) return;
-           var note = services.osm.getNote(selectedNoteID);
+         function updateToGraph(graph) {
+           if (graph === head) return;
+           var diff = coreDifference(head, graph);
+           head = graph;
+           var changed = diff.didChange;
+           if (!changed.addition && !changed.deletion && !changed.geometry) return;
+           var insertions = {};

 
 

-           if (note) {
-             context.map().centerZoomEase(note.loc, 20);
+           if (changed.deletion) {
+             diff.deleted().forEach(function (entity) {
+               removeEntity(entity);
+             });

            }
            }

-         };
-
-         mode.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return mode;
-         };

 
 

-         mode.enter = function () {
-           var note = checkSelectedID();
-           if (!note) return;
+           if (changed.geometry) {
+             diff.modified().forEach(function (entity) {
+               removeEntity(entity);
+               insertions[entity.id] = entity;
+               updateParents(entity, insertions, {});
+             });
+           }

 
 

-           _behaviors.forEach(context.install);
+           if (changed.addition) {
+             diff.created().forEach(function (entity) {
+               insertions[entity.id] = entity;
+             });
+           }

 
 

-           _keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
+           loadEntities(Object.values(insertions));
+         } // returns an array of entities with bounding boxes overlapping `extent` for the given `graph`

 
 

-           select(document).call(_keybinding);
-           selectNote();
-           var sidebar = context.ui().sidebar;
-           sidebar.show(_noteEditor.note(note).newNote(_newFeature)); // expand the sidebar, avoid obscuring the note if needed

 
 

-           sidebar.expand(sidebar.intersects(note.extent()));
-           context.map().on('drawn.select', selectNote);
-         };
+         tree.intersects = function (extent, graph) {
+           updateToGraph(graph);
+           return _rtree.search(extent.bbox()).map(function (bbox) {
+             return graph.entity(bbox.id);
+           });
+         }; // returns an array of segment objects with bounding boxes overlapping `extent` for the given `graph`

 
 

-         mode.exit = function () {
-           _behaviors.forEach(context.uninstall);

 
 

-           select(document).call(_keybinding.unbind);
-           context.surface().selectAll('.layer-notes .selected').classed('selected hover', false);
-           context.map().on('drawn.select', null);
-           context.ui().sidebar.hide();
-           context.selectedNoteID(null);
+         tree.waySegments = function (extent, graph) {
+           updateToGraph(graph);
+           return _segmentsRTree.search(extent.bbox()).map(function (bbox) {
+             return bbox.segment;
+           });

          };
 
          };
 

-         return mode;
+         return tree;

        }
 
        }
 

-       function modeDragNote(context) {
-         var mode = {
-           id: 'drag-note',
-           button: 'browse'
+       function svgIcon(name, svgklass, useklass) {
+         return function drawIcon(selection) {
+           selection.selectAll('svg.icon' + (svgklass ? '.' + svgklass.split(' ')[0] : '')).data([0]).enter().append('svg').attr('class', 'icon ' + (svgklass || '')).append('use').attr('xlink:href', name).attr('class', useklass);

          };
          };

-         var edit = behaviorEdit(context);
+       }

 
 

-         var _nudgeInterval;
+       function uiModal(selection, blocking) {
+         var _this = this;

 
 

-         var _lastLoc;
+         var keybinding = utilKeybinding('modal');
+         var previous = selection.select('div.modal');
+         var animate = previous.empty();
+         previous.transition().duration(200).style('opacity', 0).remove();
+         var shaded = selection.append('div').attr('class', 'shaded').style('opacity', 0);

 
 

-         var _note; // most current note.. dragged note may have stale datum.
+         shaded.close = function () {
+           shaded.transition().duration(200).style('opacity', 0).remove();
+           modal.transition().duration(200).style('top', '0px');
+           select(document).call(keybinding.unbind);
+         };

 
 

+         var modal = shaded.append('div').attr('class', 'modal fillL');
+         modal.append('input').attr('class', 'keytrap keytrap-first').on('focus.keytrap', moveFocusToLast);

 
 

-         function startNudge(d3_event, nudge) {
-           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
-           _nudgeInterval = window.setInterval(function () {
-             context.map().pan(nudge);
-             doMove(d3_event, nudge);
-           }, 50);
+         if (!blocking) {
+           shaded.on('click.remove-modal', function (d3_event) {
+             if (d3_event.target === _this) {
+               shaded.close();
+             }
+           });
+           modal.append('button').attr('class', 'close').on('click', shaded.close).call(svgIcon('#iD-icon-close'));
+           keybinding.on('⌫', shaded.close).on('⎋', shaded.close);
+           select(document).call(keybinding);

          }
 
          }
 

-         function stopNudge() {
-           if (_nudgeInterval) {
-             window.clearInterval(_nudgeInterval);
-             _nudgeInterval = null;
-           }
-         }
+         modal.append('div').attr('class', 'content');
+         modal.append('input').attr('class', 'keytrap keytrap-last').on('focus.keytrap', moveFocusToFirst);

 
 

-         function origin(note) {
-           return context.projection(note.loc);
+         if (animate) {
+           shaded.transition().style('opacity', 1);
+         } else {
+           shaded.style('opacity', 1);

          }
 
          }
 

-         function start(d3_event, note) {
-           _note = note;
-           var osm = services.osm;
+         return shaded;

 
 

-           if (osm) {
-             // Get latest note from cache.. The marker may have a stale datum bound to it
-             // and dragging it around can sometimes delete the users note comment.
-             _note = osm.getNote(_note.id);
-           }
+         function moveFocusToFirst() {
+           var node = modal // there are additional rules about what's focusable, but this suits our purposes
+           .select('a, button, input:not(.keytrap), select, textarea').node();

 
 

-           context.surface().selectAll('.note-' + _note.id).classed('active', true);
-           context.perform(actionNoop());
-           context.enter(mode);
-           context.selectedNoteID(_note.id);
+           if (node) {
+             node.focus();
+           } else {
+             select(this).node().blur();
+           }

          }
 
          }
 

-         function move(d3_event, entity, point) {
-           d3_event.stopPropagation();
-           _lastLoc = context.projection.invert(point);
-           doMove(d3_event);
-           var nudge = geoViewportEdge(point, context.map().dimensions());
+         function moveFocusToLast() {
+           var nodes = modal.selectAll('a, button, input:not(.keytrap), select, textarea').nodes();

 
 

-           if (nudge) {
-             startNudge(d3_event, nudge);
+           if (nodes.length) {
+             nodes[nodes.length - 1].focus();

            } else {
            } else {

-             stopNudge();
+             select(this).node().blur();

            }
          }
            }
          }

+       }

 
 

-         function doMove(d3_event, nudge) {
-           nudge = nudge || [0, 0];
-           var currPoint = d3_event && d3_event.point || context.projection(_lastLoc);
-           var currMouse = geoVecSubtract(currPoint, nudge);
-           var loc = context.projection.invert(currMouse);
-           _note = _note.move(loc);
-           var osm = services.osm;
+       function uiLoading(context) {
+         var _modalSelection = select(null);

 
 

-           if (osm) {
-             osm.replaceNote(_note); // update note cache
-           }
+         var _message = '';
+         var _blocking = false;

 
 

-           context.replace(actionNoop()); // trigger redraw
-         }
+         var loading = function loading(selection) {
+           _modalSelection = uiModal(selection, _blocking);

 
 

-         function end() {
-           context.replace(actionNoop()); // trigger redraw
+           var loadertext = _modalSelection.select('.content').classed('loading-modal', true).append('div').attr('class', 'modal-section fillL');

 
 

-           context.selectedNoteID(_note.id).enter(modeSelectNote(context, _note.id));
-         }
+           loadertext.append('img').attr('class', 'loader').attr('src', context.imagePath('loader-white.gif'));
+           loadertext.append('h3').html(_message);

 
 

-         var drag = behaviorDrag().selector('.layer-touch.markers .target.note.new').surface(context.container().select('.main-map').node()).origin(origin).on('start', start).on('move', move).on('end', end);
+           _modalSelection.select('button.close').attr('class', 'hide');

 
 

-         mode.enter = function () {
-           context.install(edit);
+           return loading;

          };
 
          };
 

-         mode.exit = function () {
-           context.ui().sidebar.hover.cancel();
-           context.uninstall(edit);
-           context.surface().selectAll('.active').classed('active', false);
-           stopNudge();
+         loading.message = function (val) {
+           if (!arguments.length) return _message;
+           _message = val;
+           return loading;

          };
 
          };
 

-         mode.behavior = drag;
-         return mode;
-       }
-
-       function uiDataHeader() {
-         var _datum;
+         loading.blocking = function (val) {
+           if (!arguments.length) return _blocking;
+           _blocking = val;
+           return loading;
+         };

 
 

-         function dataHeader(selection) {
-           var header = selection.selectAll('.data-header').data(_datum ? [_datum] : [], function (d) {
-             return d.__featurehash__;
-           });
-           header.exit().remove();
-           var headerEnter = header.enter().append('div').attr('class', 'data-header');
-           var iconEnter = headerEnter.append('div').attr('class', 'data-header-icon');
-           iconEnter.append('div').attr('class', 'preset-icon-28').call(svgIcon('#iD-icon-data', 'note-fill'));
-           headerEnter.append('div').attr('class', 'data-header-label').html(_t.html('map_data.layers.custom.title'));
-         }
+         loading.close = function () {
+           _modalSelection.remove();
+         };

 
 

-         dataHeader.datum = function (val) {
-           if (!arguments.length) return _datum;
-           _datum = val;
-           return this;
+         loading.isShown = function () {
+           return _modalSelection && !_modalSelection.empty() && _modalSelection.node().parentNode;

          };
 
          };
 

-         return dataHeader;
+         return loading;

        }
 
        }
 

-       // It is keyed on the `value` of the entry. Data should be an array of objects like:
-       //   [{
-       //       value:   'string value',  // required
-       //       display: 'label html'     // optional
-       //       title:   'hover text'     // optional
-       //       terms:   ['search terms'] // optional
-       //   }, ...]
-
-       var _comboHideTimerID;
-
-       function uiCombobox(context, klass) {
-         var dispatch$1 = dispatch('accept', 'cancel');
-         var container = context.container();
-         var _suggestions = [];
-         var _data = [];
-         var _fetched = {};
-         var _selected = null;
-         var _canAutocomplete = true;
-         var _caseSensitive = false;
-         var _cancelFetch = false;
-         var _minItems = 2;
-         var _tDown = 0;
+       function coreHistory(context) {
+         var dispatch = dispatch$8('reset', 'change', 'merge', 'restore', 'undone', 'redone', 'storage_error');

 
 

-         var _mouseEnterHandler, _mouseLeaveHandler;
+         var _lock = utilSessionMutex('lock'); // restorable if iD not open in another window/tab and a saved history exists in localStorage

 
 

-         var _fetcher = function _fetcher(val, cb) {
-           cb(_data.filter(function (d) {
-             var terms = d.terms || [];
-             terms.push(d.value);
-             return terms.some(function (term) {
-               return term.toString().toLowerCase().indexOf(val.toLowerCase()) !== -1;
-             });
-           }));
-         };

 
 

-         var combobox = function combobox(input, attachTo) {
-           if (!input || input.empty()) return;
-           input.classed('combobox-input', true).on('focus.combo-input', focus).on('blur.combo-input', blur).on('keydown.combo-input', keydown).on('keyup.combo-input', keyup).on('input.combo-input', change).on('mousedown.combo-input', mousedown).each(function () {
-             var parent = this.parentNode;
-             var sibling = this.nextSibling;
-             select(parent).selectAll('.combobox-caret').filter(function (d) {
-               return d === input.node();
-             }).data([input.node()]).enter().insert('div', function () {
-               return sibling;
-             }).attr('class', 'combobox-caret').on('mousedown.combo-caret', function (d3_event) {
-               d3_event.preventDefault(); // don't steal focus from input
+         var _hasUnresolvedRestorableChanges = _lock.lock() && !!corePreferences(getKey('saved_history'));

 
 

-               input.node().focus(); // focus the input as if it was clicked
+         var duration = 150;
+         var _imageryUsed = [];
+         var _photoOverlaysUsed = [];
+         var _checkpoints = {};

 
 

-               mousedown(d3_event);
-             }).on('mouseup.combo-caret', function (d3_event) {
-               d3_event.preventDefault(); // don't steal focus from input
+         var _pausedGraph;

 
 

-               mouseup(d3_event);
-             });
-           });
+         var _stack;

 
 

-           function mousedown(d3_event) {
-             if (d3_event.button !== 0) return; // left click only
+         var _index;

 
 

-             _tDown = +new Date(); // clear selection
+         var _tree; // internal _act, accepts list of actions and eased time

 
 

-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');

 
 

-             if (start !== end) {
-               var val = utilGetSetValue(input);
-               input.node().setSelectionRange(val.length, val.length);
-               return;
-             }
+         function _act(actions, t) {
+           actions = Array.prototype.slice.call(actions);
+           var annotation;

 
 

-             input.on('mouseup.combo-input', mouseup);
+           if (typeof actions[actions.length - 1] !== 'function') {
+             annotation = actions.pop();

            }
 
            }
 

-           function mouseup(d3_event) {
-             input.on('mouseup.combo-input', null);
-             if (d3_event.button !== 0) return; // left click only
-
-             if (input.node() !== document.activeElement) return; // exit if this input is not focused
-
-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');
-             if (start !== end) return; // exit if user is selecting
-             // not showing or showing for a different field - try to show it.
-
-             var combo = container.selectAll('.combobox');
-
-             if (combo.empty() || combo.datum() !== input.node()) {
-               var tOrig = _tDown;
-               window.setTimeout(function () {
-                 if (tOrig !== _tDown) return; // exit if user double clicked
-
-                 fetchComboData('', function () {
-                   show();
-                   render();
-                 });
-               }, 250);
-             } else {
-               hide();
-             }
-           }
+           var graph = _stack[_index].graph;

 
 

-           function focus() {
-             fetchComboData(''); // prefetch values (may warm taginfo cache)
+           for (var i = 0; i < actions.length; i++) {
+             graph = actions[i](graph, t);

            }
 
            }
 

-           function blur() {
-             _comboHideTimerID = window.setTimeout(hide, 75);
-           }
+           return {
+             graph: graph,
+             annotation: annotation,
+             imageryUsed: _imageryUsed,
+             photoOverlaysUsed: _photoOverlaysUsed,
+             transform: context.projection.transform(),
+             selectedIDs: context.selectedIDs()
+           };
+         } // internal _perform with eased time

 
 

-           function show() {
-             hide(); // remove any existing

 
 

-             container.insert('div', ':first-child').datum(input.node()).attr('class', 'combobox' + (klass ? ' combobox-' + klass : '')).style('position', 'absolute').style('display', 'block').style('left', '0px').on('mousedown.combo-container', function (d3_event) {
-               // prevent moving focus out of the input field
-               d3_event.preventDefault();
-             });
-             container.on('scroll.combo-scroll', render, true);
-           }
+         function _perform(args, t) {
+           var previous = _stack[_index].graph;
+           _stack = _stack.slice(0, _index + 1);

 
 

-           function hide() {
-             if (_comboHideTimerID) {
-               window.clearTimeout(_comboHideTimerID);
-               _comboHideTimerID = undefined;
-             }
+           var actionResult = _act(args, t);

 
 

-             container.selectAll('.combobox').remove();
-             container.on('scroll.combo-scroll', null);
-           }
+           _stack.push(actionResult);

 
 

-           function keydown(d3_event) {
-             var shown = !container.selectAll('.combobox').empty();
-             var tagName = input.node() ? input.node().tagName.toLowerCase() : '';
+           _index++;
+           return change(previous);
+         } // internal _replace with eased time

 
 

-             switch (d3_event.keyCode) {
-               case 8: // ⌫ Backspace

 
 

-               case 46:
-                 // ⌦ Delete
-                 d3_event.stopPropagation();
-                 _selected = null;
-                 render();
-                 input.on('input.combo-input', function () {
-                   var start = input.property('selectionStart');
-                   input.node().setSelectionRange(start, start);
-                   input.on('input.combo-input', change);
-                 });
-                 break;
+         function _replace(args, t) {
+           var previous = _stack[_index].graph; // assert(_index == _stack.length - 1)

 
 

-               case 9:
-                 // ⇥ Tab
-                 accept();
-                 break;
+           var actionResult = _act(args, t);

 
 

-               case 13:
-                 // ↩ Return
-                 d3_event.preventDefault();
-                 d3_event.stopPropagation();
-                 break;
+           _stack[_index] = actionResult;
+           return change(previous);
+         } // internal _overwrite with eased time

 
 

-               case 38:
-                 // ↑ Up arrow
-                 if (tagName === 'textarea' && !shown) return;
-                 d3_event.preventDefault();

 
 

-                 if (tagName === 'input' && !shown) {
-                   show();
-                 }
+         function _overwrite(args, t) {
+           var previous = _stack[_index].graph;

 
 

-                 nav(-1);
-                 break;
+           if (_index > 0) {
+             _index--;

 
 

-               case 40:
-                 // ↓ Down arrow
-                 if (tagName === 'textarea' && !shown) return;
-                 d3_event.preventDefault();
+             _stack.pop();
+           }

 
 

-                 if (tagName === 'input' && !shown) {
-                   show();
-                 }
+           _stack = _stack.slice(0, _index + 1);

 
 

-                 nav(+1);
-                 break;
-             }
-           }
+           var actionResult = _act(args, t);

 
 

-           function keyup(d3_event) {
-             switch (d3_event.keyCode) {
-               case 27:
-                 // ⎋ Escape
-                 cancel();
-                 break;
+           _stack.push(actionResult);

 
 

-               case 13:
-                 // ↩ Return
-                 accept();
-                 break;
-             }
-           } // Called whenever the input value is changed (e.g. on typing)
+           _index++;
+           return change(previous);
+         } // determine difference and dispatch a change event

 
 
 
 

-           function change() {
-             fetchComboData(value(), function () {
-               _selected = null;
-               var val = input.property('value');
+         function change(previous) {
+           var difference = coreDifference(previous, history.graph());

 
 

-               if (_suggestions.length) {
-                 if (input.property('selectionEnd') === val.length) {
-                   _selected = tryAutocomplete();
-                 }
+           if (!_pausedGraph) {
+             dispatch.call('change', this, difference);
+           }

 
 

-                 if (!_selected) {
-                   _selected = val;
-                 }
-               }
+           return difference;
+         } // iD uses namespaced keys so multiple installations do not conflict

 
 

-               if (val.length) {
-                 var combo = container.selectAll('.combobox');

 
 

-                 if (combo.empty()) {
-                   show();
-                 }
-               } else {
-                 hide();
-               }
+         function getKey(n) {
+           return 'iD_' + window.location.origin + '_' + n;
+         }

 
 

-               render();
+         var history = {
+           graph: function graph() {
+             return _stack[_index].graph;
+           },
+           tree: function tree() {
+             return _tree;
+           },
+           base: function base() {
+             return _stack[0].graph;
+           },
+           merge: function merge(entities
+           /*, extent*/
+           ) {
+             var stack = _stack.map(function (state) {
+               return state.graph;

              });
              });

-           } // Called when the user presses up/down arrows to navigate the list
-

 
 

-           function nav(dir) {
-             if (_suggestions.length) {
-               // try to determine previously selected index..
-               var index = -1;
+             _stack[0].graph.rebase(entities, stack, false);

 
 

-               for (var i = 0; i < _suggestions.length; i++) {
-                 if (_selected && _suggestions[i].value === _selected) {
-                   index = i;
-                   break;
-                 }
-               } // pick new _selected
+             _tree.rebase(entities, false);

 
 

+             dispatch.call('merge', this, entities);
+           },
+           perform: function perform() {
+             // complete any transition already in progress
+             select(document).interrupt('history.perform');
+             var transitionable = false;
+             var action0 = arguments[0];

 
 

-               index = Math.max(Math.min(index + dir, _suggestions.length - 1), 0);
-               _selected = _suggestions[index].value;
-               input.property('value', _selected);
+             if (arguments.length === 1 || arguments.length === 2 && typeof arguments[1] !== 'function') {
+               transitionable = !!action0.transitionable;

              }
 
              }
 

-             render();
-             ensureVisible();
-           }
-
-           function ensureVisible() {
-             var combo = container.selectAll('.combobox');
-             if (combo.empty()) return;
-             var containerRect = container.node().getBoundingClientRect();
-             var comboRect = combo.node().getBoundingClientRect();
-
-             if (comboRect.bottom > containerRect.bottom) {
-               var node = attachTo ? attachTo.node() : input.node();
-               node.scrollIntoView({
-                 behavior: 'instant',
-                 block: 'center'
+             if (transitionable) {
+               var origArguments = arguments;
+               select(document).transition('history.perform').duration(duration).ease(linear$1).tween('history.tween', function () {
+                 return function (t) {
+                   if (t < 1) _overwrite([action0], t);
+                 };
+               }).on('start', function () {
+                 _perform([action0], 0);
+               }).on('end interrupt', function () {
+                 _overwrite(origArguments, 1);

                });
                });

-               render();
-             } // https://stackoverflow.com/questions/11039885/scrollintoview-causing-the-whole-page-to-move
+             } else {
+               return _perform(arguments);
+             }
+           },
+           replace: function replace() {
+             select(document).interrupt('history.perform');
+             return _replace(arguments, 1);
+           },
+           // Same as calling pop and then perform
+           overwrite: function overwrite() {
+             select(document).interrupt('history.perform');
+             return _overwrite(arguments, 1);
+           },
+           pop: function pop(n) {
+             select(document).interrupt('history.perform');
+             var previous = _stack[_index].graph;

 
 

+             if (isNaN(+n) || +n < 0) {
+               n = 1;
+             }

 
 

-             var selected = combo.selectAll('.combobox-option.selected').node();
+             while (n-- > 0 && _index > 0) {
+               _index--;

 
 

-             if (selected) {
-               selected.scrollIntoView({
-                 behavior: 'smooth',
-                 block: 'nearest'
-               });
+               _stack.pop();

              }
              }

-           }

 
 

-           function value() {
-             var value = input.property('value');
-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');
+             return change(previous);
+           },
+           // Back to the previous annotated state or _index = 0.
+           undo: function undo() {
+             select(document).interrupt('history.perform');
+             var previousStack = _stack[_index];
+             var previous = previousStack.graph;

 
 

-             if (start && end) {
-               value = value.substring(0, start);
+             while (_index > 0) {
+               _index--;
+               if (_stack[_index].annotation) break;

              }
 
              }
 

-             return value;
-           }
-
-           function fetchComboData(v, cb) {
-             _cancelFetch = false;
+             dispatch.call('undone', this, _stack[_index], previousStack);
+             return change(previous);
+           },
+           // Forward to the next annotated state.
+           redo: function redo() {
+             select(document).interrupt('history.perform');
+             var previousStack = _stack[_index];
+             var previous = previousStack.graph;
+             var tryIndex = _index;

 
 

-             _fetcher.call(input, v, function (results) {
-               // already chose a value, don't overwrite or autocomplete it
-               if (_cancelFetch) return;
-               _suggestions = results;
-               results.forEach(function (d) {
-                 _fetched[d.value] = d;
-               });
+             while (tryIndex < _stack.length - 1) {
+               tryIndex++;

 
 

-               if (cb) {
-                 cb();
+               if (_stack[tryIndex].annotation) {
+                 _index = tryIndex;
+                 dispatch.call('redone', this, _stack[_index], previousStack);
+                 break;

                }
                }

-             });
-           }
-
-           function tryAutocomplete() {
-             if (!_canAutocomplete) return;
-             var val = _caseSensitive ? value() : value().toLowerCase();
-             if (!val) return; // Don't autocomplete if user is typing a number - #4935
-
-             if (!isNaN(parseFloat(val)) && isFinite(val)) return;
-             var bestIndex = -1;
+             }

 
 

-             for (var i = 0; i < _suggestions.length; i++) {
-               var suggestion = _suggestions[i].value;
-               var compare = _caseSensitive ? suggestion : suggestion.toLowerCase(); // if search string matches suggestion exactly, pick it..
+             return change(previous);
+           },
+           pauseChangeDispatch: function pauseChangeDispatch() {
+             if (!_pausedGraph) {
+               _pausedGraph = _stack[_index].graph;
+             }
+           },
+           resumeChangeDispatch: function resumeChangeDispatch() {
+             if (_pausedGraph) {
+               var previous = _pausedGraph;
+               _pausedGraph = null;
+               return change(previous);
+             }
+           },
+           undoAnnotation: function undoAnnotation() {
+             var i = _index;

 
 

-               if (compare === val) {
-                 bestIndex = i;
-                 break; // otherwise lock in the first result that starts with the search string..
-               } else if (bestIndex === -1 && compare.indexOf(val) === 0) {
-                 bestIndex = i;
-               }
+             while (i >= 0) {
+               if (_stack[i].annotation) return _stack[i].annotation;
+               i--;

              }
              }

+           },
+           redoAnnotation: function redoAnnotation() {
+             var i = _index + 1;

 
 

-             if (bestIndex !== -1) {
-               var bestVal = _suggestions[bestIndex].value;
-               input.property('value', bestVal);
-               input.node().setSelectionRange(val.length, bestVal.length);
-               return bestVal;
+             while (i <= _stack.length - 1) {
+               if (_stack[i].annotation) return _stack[i].annotation;
+               i++;

              }
              }

-           }
+           },
+           // Returns the entities from the active graph with bounding boxes
+           // overlapping the given `extent`.
+           intersects: function intersects(extent) {
+             return _tree.intersects(extent, _stack[_index].graph);
+           },
+           difference: function difference() {
+             var base = _stack[0].graph;
+             var head = _stack[_index].graph;
+             return coreDifference(base, head);
+           },
+           changes: function changes(action) {
+             var base = _stack[0].graph;
+             var head = _stack[_index].graph;

 
 

-           function render() {
-             if (_suggestions.length < _minItems || document.activeElement !== input.node()) {
-               hide();
-               return;
+             if (action) {
+               head = action(head);

              }
 
              }
 

-             var shown = !container.selectAll('.combobox').empty();
-             if (!shown) return;
-             var combo = container.selectAll('.combobox');
-             var options = combo.selectAll('.combobox-option').data(_suggestions, function (d) {
-               return d.value;
-             });
-             options.exit().remove(); // enter/update
+             var difference = coreDifference(base, head);
+             return {
+               modified: difference.modified(),
+               created: difference.created(),
+               deleted: difference.deleted()
+             };
+           },
+           hasChanges: function hasChanges() {
+             return this.difference().length() > 0;
+           },
+           imageryUsed: function imageryUsed(sources) {
+             if (sources) {
+               _imageryUsed = sources;
+               return history;
+             } else {
+               var s = new Set();

 
 

-             options.enter().append('a').attr('class', 'combobox-option').attr('title', function (d) {
-               return d.title;
-             }).html(function (d) {
-               return d.display || d.value;
-             }).on('mouseenter', _mouseEnterHandler).on('mouseleave', _mouseLeaveHandler).merge(options).classed('selected', function (d) {
-               return d.value === _selected;
-             }).on('click.combo-option', accept).order();
-             var node = attachTo ? attachTo.node() : input.node();
-             var containerRect = container.node().getBoundingClientRect();
-             var rect = node.getBoundingClientRect();
-             combo.style('left', rect.left + 5 - containerRect.left + 'px').style('width', rect.width - 10 + 'px').style('top', rect.height + rect.top - containerRect.top + 'px');
-           } // Dispatches an 'accept' event
-           // Then hides the combobox.
+               _stack.slice(1, _index + 1).forEach(function (state) {
+                 state.imageryUsed.forEach(function (source) {
+                   if (source !== 'Custom') {
+                     s.add(source);
+                   }
+                 });
+               });

 
 

+               return Array.from(s);
+             }
+           },
+           photoOverlaysUsed: function photoOverlaysUsed(sources) {
+             if (sources) {
+               _photoOverlaysUsed = sources;
+               return history;
+             } else {
+               var s = new Set();

 
 

-           function accept(d3_event, d) {
-             _cancelFetch = true;
-             var thiz = input.node();
+               _stack.slice(1, _index + 1).forEach(function (state) {
+                 if (state.photoOverlaysUsed && Array.isArray(state.photoOverlaysUsed)) {
+                   state.photoOverlaysUsed.forEach(function (photoOverlay) {
+                     s.add(photoOverlay);
+                   });
+                 }
+               });

 
 

-             if (d) {
-               // user clicked on a suggestion
-               utilGetSetValue(input, d.value); // replace field contents
+               return Array.from(s);
+             }
+           },
+           // save the current history state
+           checkpoint: function checkpoint(key) {
+             _checkpoints[key] = {
+               stack: _stack,
+               index: _index
+             };
+             return history;
+           },
+           // restore history state to a given checkpoint or reset completely
+           reset: function reset(key) {
+             if (key !== undefined && _checkpoints.hasOwnProperty(key)) {
+               _stack = _checkpoints[key].stack;
+               _index = _checkpoints[key].index;
+             } else {
+               _stack = [{
+                 graph: coreGraph()
+               }];
+               _index = 0;
+               _tree = coreTree(_stack[0].graph);
+               _checkpoints = {};
+             }

 
 

-               utilTriggerEvent(input, 'change');
-             } // clear (and keep) selection
+             dispatch.call('reset');
+             dispatch.call('change');
+             return history;
+           },
+           // `toIntroGraph()` is used to export the intro graph used by the walkthrough.
+           //
+           // To use it:
+           //  1. Start the walkthrough.
+           //  2. Get to a "free editing" tutorial step
+           //  3. Make your edits to the walkthrough map
+           //  4. In your browser dev console run:
+           //        `id.history().toIntroGraph()`
+           //  5. This outputs stringified JSON to the browser console
+           //  6. Copy it to `data/intro_graph.json` and prettify it in your code editor
+           toIntroGraph: function toIntroGraph() {
+             var nextID = {
+               n: 0,
+               r: 0,
+               w: 0
+             };
+             var permIDs = {};
+             var graph = this.graph();
+             var baseEntities = {}; // clone base entities..

 
 

+             Object.values(graph.base().entities).forEach(function (entity) {
+               var copy = copyIntroEntity(entity);
+               baseEntities[copy.id] = copy;
+             }); // replace base entities with head entities..

 
 

-             var val = utilGetSetValue(input);
-             thiz.setSelectionRange(val.length, val.length);
-             d = _fetched[val];
-             dispatch$1.call('accept', thiz, d, val);
-             hide();
-           } // Dispatches an 'cancel' event
-           // Then hides the combobox.
+             Object.keys(graph.entities).forEach(function (id) {
+               var entity = graph.entities[id];

 
 

+               if (entity) {
+                 var copy = copyIntroEntity(entity);
+                 baseEntities[copy.id] = copy;
+               } else {
+                 delete baseEntities[id];
+               }
+             }); // swap temporary for permanent ids..

 
 

-           function cancel() {
-             _cancelFetch = true;
-             var thiz = input.node(); // clear (and remove) selection, and replace field contents
+             Object.values(baseEntities).forEach(function (entity) {
+               if (Array.isArray(entity.nodes)) {
+                 entity.nodes = entity.nodes.map(function (node) {
+                   return permIDs[node] || node;
+                 });
+               }

 
 

-             var val = utilGetSetValue(input);
-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');
-             val = val.slice(0, start) + val.slice(end);
-             utilGetSetValue(input, val);
-             thiz.setSelectionRange(val.length, val.length);
-             dispatch$1.call('cancel', thiz);
-             hide();
-           }
-         };
+               if (Array.isArray(entity.members)) {
+                 entity.members = entity.members.map(function (member) {
+                   member.id = permIDs[member.id] || member.id;
+                   return member;
+                 });
+               }
+             });
+             return JSON.stringify({
+               dataIntroGraph: baseEntities
+             });

 
 

-         combobox.canAutocomplete = function (val) {
-           if (!arguments.length) return _canAutocomplete;
-           _canAutocomplete = val;
-           return combobox;
-         };
+             function copyIntroEntity(source) {
+               var copy = utilObjectOmit(source, ['type', 'user', 'v', 'version', 'visible']); // Note: the copy is no longer an osmEntity, so it might not have `tags`

 
 

-         combobox.caseSensitive = function (val) {
-           if (!arguments.length) return _caseSensitive;
-           _caseSensitive = val;
-           return combobox;
-         };
+               if (copy.tags && !Object.keys(copy.tags)) {
+                 delete copy.tags;
+               }

 
 

-         combobox.data = function (val) {
-           if (!arguments.length) return _data;
-           _data = val;
-           return combobox;
-         };
+               if (Array.isArray(copy.loc)) {
+                 copy.loc[0] = +copy.loc[0].toFixed(6);
+                 copy.loc[1] = +copy.loc[1].toFixed(6);
+               }

 
 

-         combobox.fetcher = function (val) {
-           if (!arguments.length) return _fetcher;
-           _fetcher = val;
-           return combobox;
-         };
+               var match = source.id.match(/([nrw])-\d*/); // temporary id

 
 

-         combobox.minItems = function (val) {
-           if (!arguments.length) return _minItems;
-           _minItems = val;
-           return combobox;
-         };
+               if (match !== null) {
+                 var nrw = match[1];
+                 var permID;

 
 

-         combobox.itemsMouseEnter = function (val) {
-           if (!arguments.length) return _mouseEnterHandler;
-           _mouseEnterHandler = val;
-           return combobox;
-         };
+                 do {
+                   permID = nrw + ++nextID[nrw];
+                 } while (baseEntities.hasOwnProperty(permID));

 
 

-         combobox.itemsMouseLeave = function (val) {
-           if (!arguments.length) return _mouseLeaveHandler;
-           _mouseLeaveHandler = val;
-           return combobox;
-         };
+                 copy.id = permIDs[source.id] = permID;
+               }

 
 

-         return utilRebind(combobox, dispatch$1, 'on');
-       }
+               return copy;
+             }
+           },
+           toJSON: function toJSON() {
+             if (!this.hasChanges()) return;
+             var allEntities = {};
+             var baseEntities = {};
+             var base = _stack[0];

 
 

-       uiCombobox.off = function (input, context) {
-         input.on('focus.combo-input', null).on('blur.combo-input', null).on('keydown.combo-input', null).on('keyup.combo-input', null).on('input.combo-input', null).on('mousedown.combo-input', null).on('mouseup.combo-input', null);
-         context.container().on('scroll.combo-scroll', null);
-       };
+             var s = _stack.map(function (i) {
+               var modified = [];
+               var deleted = [];
+               Object.keys(i.graph.entities).forEach(function (id) {
+                 var entity = i.graph.entities[id];

 
 

-       // hide class, which sets display=none, and a d3 transition for opacity.
-       // this will cause blinking when called repeatedly, so check that the
-       // value actually changes between calls.
+                 if (entity) {
+                   var key = osmEntity.key(entity);
+                   allEntities[key] = entity;
+                   modified.push(key);
+                 } else {
+                   deleted.push(id);
+                 } // make sure that the originals of changed or deleted entities get merged
+                 // into the base of the _stack after restoring the data from JSON.

 
 

-       function uiToggle(show, callback) {
-         return function (selection) {
-           selection.style('opacity', show ? 0 : 1).classed('hide', false).transition().style('opacity', show ? 1 : 0).on('end', function () {
-             select(this).classed('hide', !show).style('opacity', null);
-             if (callback) callback.apply(this);
-           });
-         };
-       }

 
 

-       function uiDisclosure(context, key, expandedDefault) {
-         var dispatch$1 = dispatch('toggled');
+                 if (id in base.graph.entities) {
+                   baseEntities[id] = base.graph.entities[id];
+                 }

 
 

-         var _expanded;
+                 if (entity && entity.nodes) {
+                   // get originals of pre-existing child nodes
+                   entity.nodes.forEach(function (nodeID) {
+                     if (nodeID in base.graph.entities) {
+                       baseEntities[nodeID] = base.graph.entities[nodeID];
+                     }
+                   });
+                 } // get originals of parent entities too

 
 

-         var _label = utilFunctor('');

 
 

-         var _updatePreference = true;
+                 var baseParents = base.graph._parentWays[id];

 
 

-         var _content = function _content() {};
+                 if (baseParents) {
+                   baseParents.forEach(function (parentID) {
+                     if (parentID in base.graph.entities) {
+                       baseEntities[parentID] = base.graph.entities[parentID];
+                     }
+                   });
+                 }
+               });
+               var x = {};
+               if (modified.length) x.modified = modified;
+               if (deleted.length) x.deleted = deleted;
+               if (i.imageryUsed) x.imageryUsed = i.imageryUsed;
+               if (i.photoOverlaysUsed) x.photoOverlaysUsed = i.photoOverlaysUsed;
+               if (i.annotation) x.annotation = i.annotation;
+               if (i.transform) x.transform = i.transform;
+               if (i.selectedIDs) x.selectedIDs = i.selectedIDs;
+               return x;
+             });

 
 

-         var disclosure = function disclosure(selection) {
-           if (_expanded === undefined || _expanded === null) {
-             // loading _expanded here allows it to be reset by calling `disclosure.expanded(null)`
-             var preference = corePreferences('disclosure.' + key + '.expanded');
-             _expanded = preference === null ? !!expandedDefault : preference === 'true';
-           }
+             return JSON.stringify({
+               version: 3,
+               entities: Object.values(allEntities),
+               baseEntities: Object.values(baseEntities),
+               stack: s,
+               nextIDs: osmEntity.id.next,
+               index: _index,
+               // note the time the changes were saved
+               timestamp: new Date().getTime()
+             });
+           },
+           fromJSON: function fromJSON(json, loadChildNodes) {
+             var h = JSON.parse(json);
+             var loadComplete = true;
+             osmEntity.id.next = h.nextIDs;
+             _index = h.index;

 
 

-           var hideToggle = selection.selectAll('.hide-toggle-' + key).data([0]); // enter
+             if (h.version === 2 || h.version === 3) {
+               var allEntities = {};
+               h.entities.forEach(function (entity) {
+                 allEntities[osmEntity.key(entity)] = osmEntity(entity);
+               });

 
 

-           var hideToggleEnter = hideToggle.enter().append('a').attr('href', '#').attr('class', 'hide-toggle hide-toggle-' + key).call(svgIcon('', 'pre-text', 'hide-toggle-icon'));
-           hideToggleEnter.append('span').attr('class', 'hide-toggle-text'); // update
+               if (h.version === 3) {
+                 // This merges originals for changed entities into the base of
+                 // the _stack even if the current _stack doesn't have them (for
+                 // example when iD has been restarted in a different region)
+                 var baseEntities = h.baseEntities.map(function (d) {
+                   return osmEntity(d);
+                 });

 
 

-           hideToggle = hideToggleEnter.merge(hideToggle);
-           hideToggle.on('click', toggle).classed('expanded', _expanded);
-           hideToggle.selectAll('.hide-toggle-text').html(_label());
-           hideToggle.selectAll('.hide-toggle-icon').attr('xlink:href', _expanded ? '#iD-icon-down' : _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward');
-           var wrap = selection.selectAll('.disclosure-wrap').data([0]); // enter/update
+                 var stack = _stack.map(function (state) {
+                   return state.graph;
+                 });

 
 

-           wrap = wrap.enter().append('div').attr('class', 'disclosure-wrap disclosure-wrap-' + key).merge(wrap).classed('hide', !_expanded);
+                 _stack[0].graph.rebase(baseEntities, stack, true);

 
 

-           if (_expanded) {
-             wrap.call(_content);
-           }
+                 _tree.rebase(baseEntities, true); // When we restore a modified way, we also need to fetch any missing
+                 // childnodes that would normally have been downloaded with it.. #2142

 
 

-           function toggle(d3_event) {
-             d3_event.preventDefault();
-             _expanded = !_expanded;

 
 

-             if (_updatePreference) {
-               corePreferences('disclosure.' + key + '.expanded', _expanded);
-             }
+                 if (loadChildNodes) {
+                   var osm = context.connection();
+                   var baseWays = baseEntities.filter(function (e) {
+                     return e.type === 'way';
+                   });
+                   var nodeIDs = baseWays.reduce(function (acc, way) {
+                     return utilArrayUnion(acc, way.nodes);
+                   }, []);
+                   var missing = nodeIDs.filter(function (n) {
+                     return !_stack[0].graph.hasEntity(n);
+                   });

 
 

-             hideToggle.classed('expanded', _expanded);
-             hideToggle.selectAll('.hide-toggle-icon').attr('xlink:href', _expanded ? '#iD-icon-down' : _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward');
-             wrap.call(uiToggle(_expanded));
+                   if (missing.length && osm) {
+                     loadComplete = false;
+                     context.map().redrawEnable(false);
+                     var loading = uiLoading(context).blocking(true);
+                     context.container().call(loading);
+
+                     var childNodesLoaded = function childNodesLoaded(err, result) {
+                       if (!err) {
+                         var visibleGroups = utilArrayGroupBy(result.data, 'visible');
+                         var visibles = visibleGroups["true"] || []; // alive nodes
+
+                         var invisibles = visibleGroups["false"] || []; // deleted nodes

 
 

-             if (_expanded) {
-               wrap.call(_content);
-             }
+                         if (visibles.length) {
+                           var visibleIDs = visibles.map(function (entity) {
+                             return entity.id;
+                           });

 
 

-             dispatch$1.call('toggled', this, _expanded);
-           }
-         };
+                           var stack = _stack.map(function (state) {
+                             return state.graph;
+                           });

 
 

-         disclosure.label = function (val) {
-           if (!arguments.length) return _label;
-           _label = utilFunctor(val);
-           return disclosure;
-         };
+                           missing = utilArrayDifference(missing, visibleIDs);

 
 

-         disclosure.expanded = function (val) {
-           if (!arguments.length) return _expanded;
-           _expanded = val;
-           return disclosure;
-         };
+                           _stack[0].graph.rebase(visibles, stack, true);

 
 

-         disclosure.updatePreference = function (val) {
-           if (!arguments.length) return _updatePreference;
-           _updatePreference = val;
-           return disclosure;
-         };
+                           _tree.rebase(visibles, true);
+                         } // fetch older versions of nodes that were deleted..

 
 

-         disclosure.content = function (val) {
-           if (!arguments.length) return _content;
-           _content = val;
-           return disclosure;
-         };

 
 

-         return utilRebind(disclosure, dispatch$1, 'on');
-       }
+                         invisibles.forEach(function (entity) {
+                           osm.loadEntityVersion(entity.id, +entity.version - 1, childNodesLoaded);
+                         });
+                       }

 
 

-       // Can be labeled and collapsible.
+                       if (err || !missing.length) {
+                         loading.close();
+                         context.map().redrawEnable(true);
+                         dispatch.call('change');
+                         dispatch.call('restore', this);
+                       }
+                     };

 
 

-       function uiSection(id, context) {
-         var _classes = utilFunctor('');
+                     osm.loadMultiple(missing, childNodesLoaded);
+                   }
+                 }
+               }

 
 

-         var _shouldDisplay;
+               _stack = h.stack.map(function (d) {
+                 var entities = {},
+                     entity;

 
 

-         var _content;
+                 if (d.modified) {
+                   d.modified.forEach(function (key) {
+                     entity = allEntities[key];
+                     entities[entity.id] = entity;
+                   });
+                 }

 
 

-         var _disclosure;
+                 if (d.deleted) {
+                   d.deleted.forEach(function (id) {
+                     entities[id] = undefined;
+                   });
+                 }

 
 

-         var _label;
+                 return {
+                   graph: coreGraph(_stack[0].graph).load(entities),
+                   annotation: d.annotation,
+                   imageryUsed: d.imageryUsed,
+                   photoOverlaysUsed: d.photoOverlaysUsed,
+                   transform: d.transform,
+                   selectedIDs: d.selectedIDs
+                 };
+               });
+             } else {
+               // original version
+               _stack = h.stack.map(function (d) {
+                 var entities = {};

 
 

-         var _expandedByDefault = utilFunctor(true);
+                 for (var i in d.entities) {
+                   var entity = d.entities[i];
+                   entities[i] = entity === 'undefined' ? undefined : osmEntity(entity);
+                 }

 
 

-         var _disclosureContent;
+                 d.graph = coreGraph(_stack[0].graph).load(entities);
+                 return d;
+               });
+             }

 
 

-         var _disclosureExpanded;
+             var transform = _stack[_index].transform;

 
 

-         var _containerSelection = select(null);
+             if (transform) {
+               context.map().transformEase(transform, 0); // 0 = immediate, no easing
+             }

 
 

-         var section = {
-           id: id
-         };
+             if (loadComplete) {
+               dispatch.call('change');
+               dispatch.call('restore', this);
+             }

 
 

-         section.classes = function (val) {
-           if (!arguments.length) return _classes;
-           _classes = utilFunctor(val);
-           return section;
-         };
+             return history;
+           },
+           lock: function lock() {
+             return _lock.lock();
+           },
+           unlock: function unlock() {
+             _lock.unlock();
+           },
+           save: function save() {
+             if (_lock.locked() && // don't overwrite existing, unresolved changes
+             !_hasUnresolvedRestorableChanges) {
+               var success = corePreferences(getKey('saved_history'), history.toJSON() || null);
+               if (!success) dispatch.call('storage_error');
+             }

 
 

-         section.label = function (val) {
-           if (!arguments.length) return _label;
-           _label = utilFunctor(val);
-           return section;
-         };
+             return history;
+           },
+           // delete the history version saved in localStorage
+           clearSaved: function clearSaved() {
+             context.debouncedSave.cancel();

 
 

-         section.expandedByDefault = function (val) {
-           if (!arguments.length) return _expandedByDefault;
-           _expandedByDefault = utilFunctor(val);
-           return section;
-         };
+             if (_lock.locked()) {
+               _hasUnresolvedRestorableChanges = false;
+               corePreferences(getKey('saved_history'), null); // clear the changeset metadata associated with the saved history

 
 

-         section.shouldDisplay = function (val) {
-           if (!arguments.length) return _shouldDisplay;
-           _shouldDisplay = utilFunctor(val);
-           return section;
-         };
+               corePreferences('comment', null);
+               corePreferences('hashtags', null);
+               corePreferences('source', null);
+             }

 
 

-         section.content = function (val) {
-           if (!arguments.length) return _content;
-           _content = val;
-           return section;
+             return history;
+           },
+           savedHistoryJSON: function savedHistoryJSON() {
+             return corePreferences(getKey('saved_history'));
+           },
+           hasRestorableChanges: function hasRestorableChanges() {
+             return _hasUnresolvedRestorableChanges;
+           },
+           // load history from a version stored in localStorage
+           restore: function restore() {
+             if (_lock.locked()) {
+               _hasUnresolvedRestorableChanges = false;
+               var json = this.savedHistoryJSON();
+               if (json) history.fromJSON(json, true);
+             }
+           },
+           _getKey: getKey

          };
          };

+         history.reset();
+         return utilRebind(history, dispatch, 'on');
+       }

 
 

-         section.disclosureContent = function (val) {
-           if (!arguments.length) return _disclosureContent;
-           _disclosureContent = val;
-           return section;
-         };
+       /**
+        * Look for roads that can be connected to other roads with a short extension
+        */

 
 

-         section.disclosureExpanded = function (val) {
-           if (!arguments.length) return _disclosureExpanded;
-           _disclosureExpanded = val;
-           return section;
-         }; // may be called multiple times
+       function validationAlmostJunction(context) {
+         var type = 'almost_junction';
+         var EXTEND_TH_METERS = 5;
+         var WELD_TH_METERS = 0.75; // Comes from considering bounding case of parallel ways

 
 

+         var CLOSE_NODE_TH = EXTEND_TH_METERS - WELD_TH_METERS; // Comes from considering bounding case of perpendicular ways

 
 

-         section.render = function (selection) {
-           _containerSelection = selection.selectAll('.section-' + id).data([0]);
+         var SIG_ANGLE_TH = Math.atan(WELD_TH_METERS / EXTEND_TH_METERS);

 
 

-           var sectionEnter = _containerSelection.enter().append('div').attr('class', 'section section-' + id + ' ' + (_classes && _classes() || ''));
+         function isHighway(entity) {
+           return entity.type === 'way' && osmRoutableHighwayTagValues[entity.tags.highway];
+         }

 
 

-           _containerSelection = sectionEnter.merge(_containerSelection);
+         function isTaggedAsNotContinuing(node) {
+           return node.tags.noexit === 'yes' || node.tags.amenity === 'parking_entrance' || node.tags.entrance && node.tags.entrance !== 'no';
+         }

 
 

-           _containerSelection.call(renderContent);
-         };
+         var validation = function checkAlmostJunction(entity, graph) {
+           if (!isHighway(entity)) return [];
+           if (entity.isDegenerate()) return [];
+           var tree = context.history().tree();
+           var extendableNodeInfos = findConnectableEndNodesByExtension(entity);
+           var issues = [];
+           extendableNodeInfos.forEach(function (extendableNodeInfo) {
+             issues.push(new validationIssue({
+               type: type,
+               subtype: 'highway-highway',
+               severity: 'warning',
+               message: function message(context) {
+                 var entity1 = context.hasEntity(this.entityIds[0]);

 
 

-         section.reRender = function () {
-           _containerSelection.call(renderContent);
-         };
+                 if (this.entityIds[0] === this.entityIds[2]) {
+                   return entity1 ? _t.html('issues.almost_junction.self.message', {
+                     feature: utilDisplayLabel(entity1, context.graph())
+                   }) : '';
+                 } else {
+                   var entity2 = context.hasEntity(this.entityIds[2]);
+                   return entity1 && entity2 ? _t.html('issues.almost_junction.message', {
+                     feature: utilDisplayLabel(entity1, context.graph()),
+                     feature2: utilDisplayLabel(entity2, context.graph())
+                   }) : '';
+                 }
+               },
+               reference: showReference,
+               entityIds: [entity.id, extendableNodeInfo.node.id, extendableNodeInfo.wid],
+               loc: extendableNodeInfo.node.loc,
+               hash: JSON.stringify(extendableNodeInfo.node.loc),
+               data: {
+                 midId: extendableNodeInfo.mid.id,
+                 edge: extendableNodeInfo.edge,
+                 cross_loc: extendableNodeInfo.cross_loc
+               },
+               dynamicFixes: makeFixes
+             }));
+           });
+           return issues;

 
 

-         section.selection = function () {
-           return _containerSelection;
-         };
+           function makeFixes(context) {
+             var fixes = [new validationIssueFix({
+               icon: 'iD-icon-abutment',
+               title: _t.html('issues.fix.connect_features.title'),
+               onClick: function onClick(context) {
+                 var annotation = _t('issues.fix.connect_almost_junction.annotation');

 
 

-         section.disclosure = function () {
-           return _disclosure;
-         }; // may be called multiple times
+                 var _this$issue$entityIds = _slicedToArray(this.issue.entityIds, 3),
+                     endNodeId = _this$issue$entityIds[1],
+                     crossWayId = _this$issue$entityIds[2];

 
 

+                 var midNode = context.entity(this.issue.data.midId);
+                 var endNode = context.entity(endNodeId);
+                 var crossWay = context.entity(crossWayId); // When endpoints are close, just join if resulting small change in angle (#7201)

 
 

-         function renderContent(selection) {
-           if (_shouldDisplay) {
-             var shouldDisplay = _shouldDisplay();
+                 var nearEndNodes = findNearbyEndNodes(endNode, crossWay);

 
 

-             selection.classed('hide', !shouldDisplay);
+                 if (nearEndNodes.length > 0) {
+                   var collinear = findSmallJoinAngle(midNode, endNode, nearEndNodes);

 
 

-             if (!shouldDisplay) {
-               selection.html('');
-               return;
-             }
-           }
+                   if (collinear) {
+                     context.perform(actionMergeNodes([collinear.id, endNode.id], collinear.loc), annotation);
+                     return;
+                   }
+                 }

 
 

-           if (_disclosureContent) {
-             if (!_disclosure) {
-               _disclosure = uiDisclosure(context, id.replace(/-/g, '_'), _expandedByDefault()).label(_label || '')
-               /*.on('toggled', function(expanded) {
-                   if (expanded) { selection.node().parentNode.scrollTop += 200; }
-               })*/
-               .content(_disclosureContent);
-             }
+                 var targetEdge = this.issue.data.edge;
+                 var crossLoc = this.issue.data.cross_loc;
+                 var edgeNodes = [context.entity(targetEdge[0]), context.entity(targetEdge[1])];
+                 var closestNodeInfo = geoSphericalClosestNode(edgeNodes, crossLoc); // already a point nearby, just connect to that

 
 

-             if (_disclosureExpanded !== undefined) {
-               _disclosure.expanded(_disclosureExpanded);
+                 if (closestNodeInfo.distance < WELD_TH_METERS) {
+                   context.perform(actionMergeNodes([closestNodeInfo.node.id, endNode.id], closestNodeInfo.node.loc), annotation); // else add the end node to the edge way
+                 } else {
+                   context.perform(actionAddMidpoint({
+                     loc: crossLoc,
+                     edge: targetEdge
+                   }, endNode), annotation);
+                 }
+               }
+             })];
+             var node = context.hasEntity(this.entityIds[1]);

 
 

-               _disclosureExpanded = undefined;
+             if (node && !node.hasInterestingTags()) {
+               // node has no descriptive tags, suggest noexit fix
+               fixes.push(new validationIssueFix({
+                 icon: 'maki-barrier',
+                 title: _t.html('issues.fix.tag_as_disconnected.title'),
+                 onClick: function onClick(context) {
+                   var nodeID = this.issue.entityIds[1];
+                   var tags = Object.assign({}, context.entity(nodeID).tags);
+                   tags.noexit = 'yes';
+                   context.perform(actionChangeTags(nodeID, tags), _t('issues.fix.tag_as_disconnected.annotation'));
+                 }
+               }));

              }
 
              }
 

-             selection.call(_disclosure);
-             return;
+             return fixes;

            }
 
            }
 

-           if (_content) {
-             selection.call(_content);
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.almost_junction.highway-highway.reference'));

            }
            }

-         }
-
-         return section;
-       }
-
-       // {
-       //   key: 'string',     // required
-       //   value: 'string'    // optional
-       // }
-       //   -or-
-       // {
-       //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
-       // }
-       //
-
-       function uiTagReference(what) {
-         var wikibase = what.qid ? services.wikidata : services.osmWikibase;
-         var tagReference = {};

 
 

-         var _button = select(null);
+           function isExtendableCandidate(node, way) {
+             // can not accurately test vertices on tiles not downloaded from osm - #5938
+             var osm = services.osm;

 
 

-         var _body = select(null);
+             if (osm && !osm.isDataLoaded(node.loc)) {
+               return false;
+             }

 
 

-         var _loaded;
+             if (isTaggedAsNotContinuing(node) || graph.parentWays(node).length !== 1) {
+               return false;
+             }

 
 

-         var _showing;
+             var occurrences = 0;

 
 

-         function load() {
-           if (!wikibase) return;
+             for (var index in way.nodes) {
+               if (way.nodes[index] === node.id) {
+                 occurrences += 1;

 
 

-           _button.classed('tag-reference-loading', true);
+                 if (occurrences > 1) {
+                   return false;
+                 }
+               }
+             }

 
 

-           wikibase.getDocs(what, gotDocs);
-         }
+             return true;
+           }

 
 

-         function gotDocs(err, docs) {
-           _body.html('');
+           function findConnectableEndNodesByExtension(way) {
+             var results = [];
+             if (way.isClosed()) return results;
+             var testNodes;
+             var indices = [0, way.nodes.length - 1];
+             indices.forEach(function (nodeIndex) {
+               var nodeID = way.nodes[nodeIndex];
+               var node = graph.entity(nodeID);
+               if (!isExtendableCandidate(node, way)) return;
+               var connectionInfo = canConnectByExtend(way, nodeIndex);
+               if (!connectionInfo) return;
+               testNodes = graph.childNodes(way).slice(); // shallow copy

 
 

-           if (!docs || !docs.title) {
-             _body.append('p').attr('class', 'tag-reference-description').html(_t.html('inspector.no_documentation_key'));
+               testNodes[nodeIndex] = testNodes[nodeIndex].move(connectionInfo.cross_loc); // don't flag issue if connecting the ways would cause self-intersection

 
 

-             done();
-             return;
+               if (geoHasSelfIntersections(testNodes, nodeID)) return;
+               results.push(connectionInfo);
+             });
+             return results;

            }
 
            }
 

-           if (docs.imageURL) {
-             _body.append('img').attr('class', 'tag-reference-wiki-image').attr('src', docs.imageURL).on('load', function () {
-               done();
-             }).on('error', function () {
-               select(this).remove();
-               done();
+           function findNearbyEndNodes(node, way) {
+             return [way.nodes[0], way.nodes[way.nodes.length - 1]].map(function (d) {
+               return graph.entity(d);
+             }).filter(function (d) {
+               // Node cannot be near to itself, but other endnode of same way could be
+               return d.id !== node.id && geoSphericalDistance(node.loc, d.loc) <= CLOSE_NODE_TH;

              });
              });

-           } else {
-             done();

            }
 
            }
 

-           _body.append('p').attr('class', 'tag-reference-description').html(docs.description ? _mainLocalizer.htmlForLocalizedText(docs.description, docs.descriptionLocaleCode) : _t.html('inspector.no_documentation_key')).append('a').attr('class', 'tag-reference-edit').attr('target', '_blank').attr('title', _t('inspector.edit_reference')).attr('href', docs.editURL).call(svgIcon('#iD-icon-edit', 'inline'));
+           function findSmallJoinAngle(midNode, tipNode, endNodes) {
+             // Both nodes could be close, so want to join whichever is closest to collinear
+             var joinTo;
+             var minAngle = Infinity; // Checks midNode -> tipNode -> endNode for collinearity

 
 

-           if (docs.wiki) {
-             _body.append('a').attr('class', 'tag-reference-link').attr('target', '_blank').attr('href', docs.wiki.url).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html(docs.wiki.text));
-           } // Add link to info about "good changeset comments" - #2923
+             endNodes.forEach(function (endNode) {
+               var a1 = geoAngle(midNode, tipNode, context.projection) + Math.PI;
+               var a2 = geoAngle(midNode, endNode, context.projection) + Math.PI;
+               var diff = Math.max(a1, a2) - Math.min(a1, a2);

 
 

+               if (diff < minAngle) {
+                 joinTo = endNode;
+                 minAngle = diff;
+               }
+             });
+             /* Threshold set by considering right angle triangle
+             based on node joining threshold and extension distance */

 
 

-           if (what.key === 'comment') {
-             _body.append('a').attr('class', 'tag-reference-comment-link').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', _t('commit.about_changeset_comments_link')).append('span').html(_t.html('commit.about_changeset_comments'));
+             if (minAngle <= SIG_ANGLE_TH) return joinTo;
+             return null;

            }
            }

-         }
-
-         function done() {
-           _loaded = true;
-
-           _button.classed('tag-reference-loading', false);
-
-           _body.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1');

 
 

-           _showing = true;
-
-           _button.selectAll('svg.icon use').each(function () {
-             var iconUse = select(this);
-
-             if (iconUse.attr('href') === '#iD-icon-info') {
-               iconUse.attr('href', '#iD-icon-info-filled');
-             }
-           });
-         }
+           function hasTag(tags, key) {
+             return tags[key] !== undefined && tags[key] !== 'no';
+           }

 
 

-         function hide() {
-           _body.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
-             _body.classed('expanded', false);
-           });
+           function canConnectWays(way, way2) {
+             // allow self-connections
+             if (way.id === way2.id) return true; // if one is bridge or tunnel, both must be bridge or tunnel

 
 

-           _showing = false;
+             if ((hasTag(way.tags, 'bridge') || hasTag(way2.tags, 'bridge')) && !(hasTag(way.tags, 'bridge') && hasTag(way2.tags, 'bridge'))) return false;
+             if ((hasTag(way.tags, 'tunnel') || hasTag(way2.tags, 'tunnel')) && !(hasTag(way.tags, 'tunnel') && hasTag(way2.tags, 'tunnel'))) return false; // must have equivalent layers and levels

 
 

-           _button.selectAll('svg.icon use').each(function () {
-             var iconUse = select(this);
+             var layer1 = way.tags.layer || '0',
+                 layer2 = way2.tags.layer || '0';
+             if (layer1 !== layer2) return false;
+             var level1 = way.tags.level || '0',
+                 level2 = way2.tags.level || '0';
+             if (level1 !== level2) return false;
+             return true;
+           }

 
 

-             if (iconUse.attr('href') === '#iD-icon-info-filled') {
-               iconUse.attr('href', '#iD-icon-info');
-             }
-           });
-         }
+           function canConnectByExtend(way, endNodeIdx) {
+             var tipNid = way.nodes[endNodeIdx]; // the 'tip' node for extension point

 
 

-         tagReference.button = function (selection, klass, iconName) {
-           _button = selection.selectAll('.tag-reference-button').data([0]);
-           _button = _button.enter().append('button').attr('class', 'tag-reference-button ' + (klass || '')).attr('title', _t('icons.information')).call(svgIcon('#iD-icon-' + (iconName || 'inspect'))).merge(_button);
+             var midNid = endNodeIdx === 0 ? way.nodes[1] : way.nodes[way.nodes.length - 2]; // the other node of the edge

 
 

-           _button.on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             this.blur(); // avoid keeping focus on the button - #4641
+             var tipNode = graph.entity(tipNid);
+             var midNode = graph.entity(midNid);
+             var lon = tipNode.loc[0];
+             var lat = tipNode.loc[1];
+             var lon_range = geoMetersToLon(EXTEND_TH_METERS, lat) / 2;
+             var lat_range = geoMetersToLat(EXTEND_TH_METERS) / 2;
+             var queryExtent = geoExtent([[lon - lon_range, lat - lat_range], [lon + lon_range, lat + lat_range]]); // first, extend the edge of [midNode -> tipNode] by EXTEND_TH_METERS and find the "extended tip" location

 
 

-             if (_showing) {
-               hide();
-             } else if (_loaded) {
-               done();
-             } else {
-               load();
-             }
-           });
-         };
+             var edgeLen = geoSphericalDistance(midNode.loc, tipNode.loc);
+             var t = EXTEND_TH_METERS / edgeLen + 1.0;
+             var extTipLoc = geoVecInterp(midNode.loc, tipNode.loc, t); // then, check if the extension part [tipNode.loc -> extTipLoc] intersects any other ways

 
 

-         tagReference.body = function (selection) {
-           var itemID = what.qid || what.key + '-' + (what.value || '');
-           _body = selection.selectAll('.tag-reference-body').data([itemID], function (d) {
-             return d;
-           });
+             var segmentInfos = tree.waySegments(queryExtent, graph);

 
 

-           _body.exit().remove();
+             for (var i = 0; i < segmentInfos.length; i++) {
+               var segmentInfo = segmentInfos[i];
+               var way2 = graph.entity(segmentInfo.wayId);
+               if (!isHighway(way2)) continue;
+               if (!canConnectWays(way, way2)) continue;
+               var nAid = segmentInfo.nodes[0],
+                   nBid = segmentInfo.nodes[1];
+               if (nAid === tipNid || nBid === tipNid) continue;
+               var nA = graph.entity(nAid),
+                   nB = graph.entity(nBid);
+               var crossLoc = geoLineIntersection([tipNode.loc, extTipLoc], [nA.loc, nB.loc]);

 
 

-           _body = _body.enter().append('div').attr('class', 'tag-reference-body').style('max-height', '0').style('opacity', '0').merge(_body);
+               if (crossLoc) {
+                 return {
+                   mid: midNode,
+                   node: tipNode,
+                   wid: way2.id,
+                   edge: [nA.id, nB.id],
+                   cross_loc: crossLoc
+                 };
+               }
+             }

 
 

-           if (_showing === false) {
-             hide();
+             return null;

            }
          };
 
            }
          };
 

-         tagReference.showing = function (val) {
-           if (!arguments.length) return _showing;
-           _showing = val;
-           return tagReference;
-         };
-
-         return tagReference;
+         validation.type = type;
+         return validation;

        }
 
        }
 

-       function uiSectionRawTagEditor(id, context) {
-         var section = uiSection(id, context).classes('raw-tag-editor').label(function () {
-           var count = Object.keys(_tags).filter(function (d) {
-             return d;
-           }).length;
-           return _t('inspector.title_count', {
-             title: _t.html('inspector.tags'),
-             count: count
-           });
-         }).expandedByDefault(false).disclosureContent(renderDisclosureContent);
-         var taginfo = services.taginfo;
-         var dispatch$1 = dispatch('change');
-         var availableViews = [{
-           id: 'list',
-           icon: '#fas-th-list'
-         }, {
-           id: 'text',
-           icon: '#fas-i-cursor'
-         }];
+       function validationCloseNodes(context) {
+         var type = 'close_nodes';
+         var pointThresholdMeters = 0.2;

 
 

-         var _tagView = corePreferences('raw-tag-editor-view') || 'list'; // 'list, 'text'
+         var validation = function validation(entity, graph) {
+           if (entity.type === 'node') {
+             return getIssuesForNode(entity);
+           } else if (entity.type === 'way') {
+             return getIssuesForWay(entity);
+           }

 
 

+           return [];

 
 

-         var _readOnlyTags = []; // the keys in the order we want them to display
+           function getIssuesForNode(node) {
+             var parentWays = graph.parentWays(node);

 
 

-         var _orderedKeys = [];
-         var _showBlank = false;
-         var _pendingChange = null;
+             if (parentWays.length) {
+               return getIssuesForVertex(node, parentWays);
+             } else {
+               return getIssuesForDetachedPoint(node);
+             }
+           }

 
 

-         var _state;
+           function wayTypeFor(way) {
+             if (way.tags.boundary && way.tags.boundary !== 'no') return 'boundary';
+             if (way.tags.indoor && way.tags.indoor !== 'no') return 'indoor';
+             if (way.tags.building && way.tags.building !== 'no' || way.tags['building:part'] && way.tags['building:part'] !== 'no') return 'building';
+             if (osmPathHighwayTagValues[way.tags.highway]) return 'path';
+             var parentRelations = graph.parentRelations(way);

 
 

-         var _presets;
+             for (var i in parentRelations) {
+               var relation = parentRelations[i];
+               if (relation.tags.type === 'boundary') return 'boundary';

 
 

-         var _tags;
+               if (relation.isMultipolygon()) {
+                 if (relation.tags.indoor && relation.tags.indoor !== 'no') return 'indoor';
+                 if (relation.tags.building && relation.tags.building !== 'no' || relation.tags['building:part'] && relation.tags['building:part'] !== 'no') return 'building';
+               }
+             }

 
 

-         var _entityIDs;
+             return 'other';
+           }

 
 

-         var _didInteract = false;
+           function shouldCheckWay(way) {
+             // don't flag issues where merging would create degenerate ways
+             if (way.nodes.length <= 2 || way.isClosed() && way.nodes.length <= 4) return false;
+             var bbox = way.extent(graph).bbox();
+             var hypotenuseMeters = geoSphericalDistance([bbox.minX, bbox.minY], [bbox.maxX, bbox.maxY]); // don't flag close nodes in very small ways

 
 

-         function interacted() {
-           _didInteract = true;
-         }
+             if (hypotenuseMeters < 1.5) return false;
+             return true;
+           }

 
 

-         function renderDisclosureContent(wrap) {
-           // remove deleted keys
-           _orderedKeys = _orderedKeys.filter(function (key) {
-             return _tags[key] !== undefined;
-           }); // When switching to a different entity or changing the state (hover/select)
-           // reorder the keys alphabetically.
-           // We trigger this by emptying the `_orderedKeys` array, then it will be rebuilt here.
-           // Otherwise leave their order alone - #5857, #5927
+           function getIssuesForWay(way) {
+             if (!shouldCheckWay(way)) return [];
+             var issues = [],
+                 nodes = graph.childNodes(way);

 
 

-           var all = Object.keys(_tags).sort();
-           var missingKeys = utilArrayDifference(all, _orderedKeys);
+             for (var i = 0; i < nodes.length - 1; i++) {
+               var node1 = nodes[i];
+               var node2 = nodes[i + 1];
+               var issue = getWayIssueIfAny(node1, node2, way);
+               if (issue) issues.push(issue);
+             }

 
 

-           for (var i in missingKeys) {
-             _orderedKeys.push(missingKeys[i]);
-           } // assemble row data
+             return issues;
+           }

 
 

+           function getIssuesForVertex(node, parentWays) {
+             var issues = [];

 
 

-           var rowData = _orderedKeys.map(function (key, i) {
-             return {
-               index: i,
-               key: key,
-               value: _tags[key]
-             };
-           }); // append blank row last, if necessary
+             function checkForCloseness(node1, node2, way) {
+               var issue = getWayIssueIfAny(node1, node2, way);
+               if (issue) issues.push(issue);
+             }

 
 

+             for (var i = 0; i < parentWays.length; i++) {
+               var parentWay = parentWays[i];
+               if (!shouldCheckWay(parentWay)) continue;
+               var lastIndex = parentWay.nodes.length - 1;

 
 

-           if (!rowData.length || _showBlank) {
-             _showBlank = false;
-             rowData.push({
-               index: rowData.length,
-               key: '',
-               value: ''
-             });
-           } // View Options
+               for (var j = 0; j < parentWay.nodes.length; j++) {
+                 if (j !== 0) {
+                   if (parentWay.nodes[j - 1] === node.id) {
+                     checkForCloseness(node, graph.entity(parentWay.nodes[j]), parentWay);
+                   }
+                 }

 
 

+                 if (j !== lastIndex) {
+                   if (parentWay.nodes[j + 1] === node.id) {
+                     checkForCloseness(graph.entity(parentWay.nodes[j]), node, parentWay);
+                   }
+                 }
+               }
+             }

 
 

-           var options = wrap.selectAll('.raw-tag-options').data([0]);
-           options.exit().remove();
-           var optionsEnter = options.enter().insert('div', ':first-child').attr('class', 'raw-tag-options');
-           var optionEnter = optionsEnter.selectAll('.raw-tag-option').data(availableViews, function (d) {
-             return d.id;
-           }).enter();
-           optionEnter.append('button').attr('class', function (d) {
-             return 'raw-tag-option raw-tag-option-' + d.id + (_tagView === d.id ? ' selected' : '');
-           }).attr('title', function (d) {
-             return _t('icons.' + d.id);
-           }).on('click', function (d3_event, d) {
-             _tagView = d.id;
-             corePreferences('raw-tag-editor-view', d.id);
-             wrap.selectAll('.raw-tag-option').classed('selected', function (datum) {
-               return datum === d;
-             });
-             wrap.selectAll('.tag-text').classed('hide', d.id !== 'text').each(setTextareaHeight);
-             wrap.selectAll('.tag-list, .add-row').classed('hide', d.id !== 'list');
-           }).each(function (d) {
-             select(this).call(svgIcon(d.icon));
-           }); // View as Text
+             return issues;
+           }

 
 

-           var textData = rowsToText(rowData);
-           var textarea = wrap.selectAll('.tag-text').data([0]);
-           textarea = textarea.enter().append('textarea').attr('class', 'tag-text' + (_tagView !== 'text' ? ' hide' : '')).call(utilNoAuto).attr('placeholder', _t('inspector.key_value')).attr('spellcheck', 'false').merge(textarea);
-           textarea.call(utilGetSetValue, textData).each(setTextareaHeight).on('input', setTextareaHeight).on('focus', interacted).on('blur', textChanged).on('change', textChanged); // View as List
+           function thresholdMetersForWay(way) {
+             if (!shouldCheckWay(way)) return 0;
+             var wayType = wayTypeFor(way); // don't flag boundaries since they might be highly detailed and can't be easily verified

 
 

-           var list = wrap.selectAll('.tag-list').data([0]);
-           list = list.enter().append('ul').attr('class', 'tag-list' + (_tagView !== 'list' ? ' hide' : '')).merge(list); // Container for the Add button
+             if (wayType === 'boundary') return 0; // expect some features to be mapped with higher levels of detail

 
 

-           var addRowEnter = wrap.selectAll('.add-row').data([0]).enter().append('div').attr('class', 'add-row' + (_tagView !== 'list' ? ' hide' : ''));
-           addRowEnter.append('button').attr('class', 'add-tag').call(svgIcon('#iD-icon-plus', 'light')).on('click', addTag);
-           addRowEnter.append('div').attr('class', 'space-value'); // preserve space
+             if (wayType === 'indoor') return 0.01;
+             if (wayType === 'building') return 0.05;
+             if (wayType === 'path') return 0.1;
+             return 0.2;
+           }

 
 

-           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
-           // Tag list items
+           function getIssuesForDetachedPoint(node) {
+             var issues = [];
+             var lon = node.loc[0];
+             var lat = node.loc[1];
+             var lon_range = geoMetersToLon(pointThresholdMeters, lat) / 2;
+             var lat_range = geoMetersToLat(pointThresholdMeters) / 2;
+             var queryExtent = geoExtent([[lon - lon_range, lat - lat_range], [lon + lon_range, lat + lat_range]]);
+             var intersected = context.history().tree().intersects(queryExtent, graph);

 
 

-           var items = list.selectAll('.tag-row').data(rowData, function (d) {
-             return d.key;
-           });
-           items.exit().each(unbind).remove(); // Enter
+             for (var j = 0; j < intersected.length; j++) {
+               var nearby = intersected[j];
+               if (nearby.id === node.id) continue;
+               if (nearby.type !== 'node' || nearby.geometry(graph) !== 'point') continue;

 
 

-           var itemsEnter = items.enter().append('li').attr('class', 'tag-row').classed('readonly', isReadOnly);
-           var innerWrap = itemsEnter.append('div').attr('class', 'inner-wrap');
-           innerWrap.append('div').attr('class', 'key-wrap').append('input').property('type', 'text').attr('class', 'key').call(utilNoAuto).on('focus', interacted).on('blur', keyChange).on('change', keyChange);
-           innerWrap.append('div').attr('class', 'value-wrap').append('input').property('type', 'text').attr('class', 'value').call(utilNoAuto).on('focus', interacted).on('blur', valueChange).on('change', valueChange).on('keydown.push-more', pushMore);
-           innerWrap.append('button').attr('class', 'form-field-button remove').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete')); // Update
+               if (nearby.loc === node.loc || geoSphericalDistance(node.loc, nearby.loc) < pointThresholdMeters) {
+                 // allow very close points if tags indicate the z-axis might vary
+                 var zAxisKeys = {
+                   layer: true,
+                   level: true,
+                   'addr:housenumber': true,
+                   'addr:unit': true
+                 };
+                 var zAxisDifferentiates = false;

 
 

-           items = items.merge(itemsEnter).sort(function (a, b) {
-             return a.index - b.index;
-           });
-           items.each(function (d) {
-             var row = select(this);
-             var key = row.select('input.key'); // propagate bound data
+                 for (var key in zAxisKeys) {
+                   var nodeValue = node.tags[key] || '0';
+                   var nearbyValue = nearby.tags[key] || '0';

 
 

-             var value = row.select('input.value'); // propagate bound data
+                   if (nodeValue !== nearbyValue) {
+                     zAxisDifferentiates = true;
+                     break;
+                   }
+                 }

 
 

-             if (_entityIDs && taginfo && _state !== 'hover') {
-               bindTypeahead(key, value);
+                 if (zAxisDifferentiates) continue;
+                 issues.push(new validationIssue({
+                   type: type,
+                   subtype: 'detached',
+                   severity: 'warning',
+                   message: function message(context) {
+                     var entity = context.hasEntity(this.entityIds[0]),
+                         entity2 = context.hasEntity(this.entityIds[1]);
+                     return entity && entity2 ? _t.html('issues.close_nodes.detached.message', {
+                       feature: utilDisplayLabel(entity, context.graph()),
+                       feature2: utilDisplayLabel(entity2, context.graph())
+                     }) : '';
+                   },
+                   reference: showReference,
+                   entityIds: [node.id, nearby.id],
+                   dynamicFixes: function dynamicFixes() {
+                     return [new validationIssueFix({
+                       icon: 'iD-operation-disconnect',
+                       title: _t.html('issues.fix.move_points_apart.title')
+                     }), new validationIssueFix({
+                       icon: 'iD-icon-layers',
+                       title: _t.html('issues.fix.use_different_layers_or_levels.title')
+                     })];
+                   }
+                 }));
+               }

              }
 
              }
 

-             var referenceOptions = {
-               key: d.key
-             };
+             return issues;

 
 

-             if (typeof d.value === 'string') {
-               referenceOptions.value = d.value;
+             function showReference(selection) {
+               var referenceText = _t('issues.close_nodes.detached.reference');
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(referenceText);

              }
              }

+           }

 
 

-             var reference = uiTagReference(referenceOptions);
+           function getWayIssueIfAny(node1, node2, way) {
+             if (node1.id === node2.id || node1.hasInterestingTags() && node2.hasInterestingTags()) {
+               return null;
+             }

 
 

-             if (_state === 'hover') {
-               reference.showing(false);
+             if (node1.loc !== node2.loc) {
+               var parentWays1 = graph.parentWays(node1);
+               var parentWays2 = new Set(graph.parentWays(node2));
+               var sharedWays = parentWays1.filter(function (parentWay) {
+                 return parentWays2.has(parentWay);
+               });
+               var thresholds = sharedWays.map(function (parentWay) {
+                 return thresholdMetersForWay(parentWay);
+               });
+               var threshold = Math.min.apply(Math, _toConsumableArray(thresholds));
+               var distance = geoSphericalDistance(node1.loc, node2.loc);
+               if (distance > threshold) return null;

              }
 
              }
 

-             row.select('.inner-wrap') // propagate bound data
-             .call(reference.button);
-             row.call(reference.body);
-             row.select('button.remove'); // propagate bound data
-           });
-           items.selectAll('input.key').attr('title', function (d) {
-             return d.key;
-           }).call(utilGetSetValue, function (d) {
-             return d.key;
-           }).attr('readonly', function (d) {
-             return isReadOnly(d) || typeof d.value !== 'string' || null;
-           });
-           items.selectAll('input.value').attr('title', function (d) {
-             return Array.isArray(d.value) ? d.value.filter(Boolean).join('\n') : d.value;
-           }).classed('mixed', function (d) {
-             return Array.isArray(d.value);
-           }).attr('placeholder', function (d) {
-             return typeof d.value === 'string' ? null : _t('inspector.multiple_values');
-           }).call(utilGetSetValue, function (d) {
-             return typeof d.value === 'string' ? d.value : '';
-           }).attr('readonly', function (d) {
-             return isReadOnly(d) || null;
-           });
-           items.selectAll('button.remove').on(('PointerEvent' in window ? 'pointer' : 'mouse') + 'down', removeTag); // 'click' fires too late - #5878
-         }
+             return new validationIssue({
+               type: type,
+               subtype: 'vertices',
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(this.entityIds[0]);
+                 return entity ? _t.html('issues.close_nodes.message', {
+                   way: utilDisplayLabel(entity, context.graph())
+                 }) : '';
+               },
+               reference: showReference,
+               entityIds: [way.id, node1.id, node2.id],
+               loc: node1.loc,
+               dynamicFixes: function dynamicFixes() {
+                 return [new validationIssueFix({
+                   icon: 'iD-icon-plus',
+                   title: _t.html('issues.fix.merge_points.title'),
+                   onClick: function onClick(context) {
+                     var entityIds = this.issue.entityIds;
+                     var action = actionMergeNodes([entityIds[1], entityIds[2]]);
+                     context.perform(action, _t('issues.fix.merge_close_vertices.annotation'));
+                   }
+                 }), new validationIssueFix({
+                   icon: 'iD-operation-disconnect',
+                   title: _t.html('issues.fix.move_points_apart.title')
+                 })];
+               }
+             });

 
 

-         function isReadOnly(d) {
-           for (var i = 0; i < _readOnlyTags.length; i++) {
-             if (d.key.match(_readOnlyTags[i]) !== null) {
-               return true;
+             function showReference(selection) {
+               var referenceText = _t('issues.close_nodes.reference');
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(referenceText);

              }
            }
              }
            }

+         };

 
 

-           return false;
-         }
-
-         function setTextareaHeight() {
-           if (_tagView !== 'text') return;
-           var selection = select(this);
-           var matches = selection.node().value.match(/\n/g);
-           var lineCount = 2 + Number(matches && matches.length);
-           var lineHeight = 20;
-           selection.style('height', lineCount * lineHeight + 'px');
-         }
+         validation.type = type;
+         return validation;
+       }

 
 

-         function stringify(s) {
-           return JSON.stringify(s).slice(1, -1); // without leading/trailing "
-         }
+       function validationCrossingWays(context) {
+         var type = 'crossing_ways'; // returns the way or its parent relation, whichever has a useful feature type

 
 

-         function unstringify(s) {
-           var leading = '';
-           var trailing = '';
+         function getFeatureWithFeatureTypeTagsForWay(way, graph) {
+           if (getFeatureType(way, graph) === null) {
+             // if the way doesn't match a feature type, check its parent relations
+             var parentRels = graph.parentRelations(way);

 
 

-           if (s.length < 1 || s.charAt(0) !== '"') {
-             leading = '"';
-           }
+             for (var i = 0; i < parentRels.length; i++) {
+               var rel = parentRels[i];

 
 

-           if (s.length < 2 || s.charAt(s.length - 1) !== '"' || s.charAt(s.length - 1) === '"' && s.charAt(s.length - 2) === '\\') {
-             trailing = '"';
+               if (getFeatureType(rel, graph) !== null) {
+                 return rel;
+               }
+             }

            }
 
            }
 

-           return JSON.parse(leading + s + trailing);
+           return way;

          }
 
          }
 

-         function rowsToText(rows) {
-           var str = rows.filter(function (row) {
-             return row.key && row.key.trim() !== '';
-           }).map(function (row) {
-             var rawVal = row.value;
-             if (typeof rawVal !== 'string') rawVal = '*';
-             var val = rawVal ? stringify(rawVal) : '';
-             return stringify(row.key) + '=' + val;
-           }).join('\n');
-
-           if (_state !== 'hover' && str.length) {
-             return str + '\n';
-           }
+         function hasTag(tags, key) {
+           return tags[key] !== undefined && tags[key] !== 'no';
+         }

 
 

-           return str;
+         function taggedAsIndoor(tags) {
+           return hasTag(tags, 'indoor') || hasTag(tags, 'level') || tags.highway === 'corridor';

          }
 
          }
 

-         function textChanged() {
-           var newText = this.value.trim();
-           var newTags = {};
-           newText.split('\n').forEach(function (row) {
-             var m = row.match(/^\s*([^=]+)=(.*)$/);
+         function allowsBridge(featureType) {
+           return featureType === 'highway' || featureType === 'railway' || featureType === 'waterway';
+         }

 
 

-             if (m !== null) {
-               var k = context.cleanTagKey(unstringify(m[1].trim()));
-               var v = context.cleanTagValue(unstringify(m[2].trim()));
-               newTags[k] = v;
-             }
-           });
-           var tagDiff = utilTagDiff(_tags, newTags);
-           if (!tagDiff.length) return;
-           _pendingChange = _pendingChange || {};
-           tagDiff.forEach(function (change) {
-             if (isReadOnly({
-               key: change.key
-             })) return; // skip unchanged multiselection placeholders
+         function allowsTunnel(featureType) {
+           return featureType === 'highway' || featureType === 'railway' || featureType === 'waterway';
+         } // discard

 
 

-             if (change.newVal === '*' && typeof change.oldVal !== 'string') return;

 
 

-             if (change.type === '-') {
-               _pendingChange[change.key] = undefined;
-             } else if (change.type === '+') {
-               _pendingChange[change.key] = change.newVal || '';
-             }
-           });
+         var ignoredBuildings = {
+           demolished: true,
+           dismantled: true,
+           proposed: true,
+           razed: true
+         };

 
 

-           if (Object.keys(_pendingChange).length === 0) {
-             _pendingChange = null;
-             return;
-           }
+         function getFeatureType(entity, graph) {
+           var geometry = entity.geometry(graph);
+           if (geometry !== 'line' && geometry !== 'area') return null;
+           var tags = entity.tags;
+           if (hasTag(tags, 'building') && !ignoredBuildings[tags.building]) return 'building';
+           if (hasTag(tags, 'highway') && osmRoutableHighwayTagValues[tags.highway]) return 'highway'; // don't check railway or waterway areas

 
 

-           scheduleChange();
+           if (geometry !== 'line') return null;
+           if (hasTag(tags, 'railway') && osmRailwayTrackTagValues[tags.railway]) return 'railway';
+           if (hasTag(tags, 'waterway') && osmFlowingWaterwayTagValues[tags.waterway]) return 'waterway';
+           return null;

          }
 
          }
 

-         function pushMore(d3_event) {
-           // if pressing Tab on the last value field with content, add a blank row
-           if (d3_event.keyCode === 9 && !d3_event.shiftKey && section.selection().selectAll('.tag-list li:last-child input.value').node() === this && utilGetSetValue(select(this))) {
-             addTag();
-           }
-         }
+         function isLegitCrossing(tags1, featureType1, tags2, featureType2) {
+           // assume 0 by default
+           var level1 = tags1.level || '0';
+           var level2 = tags2.level || '0';
+
+           if (taggedAsIndoor(tags1) && taggedAsIndoor(tags2) && level1 !== level2) {
+             // assume features don't interact if they're indoor on different levels
+             return true;
+           } // assume 0 by default; don't use way.layer() since we account for structures here
+
+
+           var layer1 = tags1.layer || '0';
+           var layer2 = tags2.layer || '0';
+
+           if (allowsBridge(featureType1) && allowsBridge(featureType2)) {
+             if (hasTag(tags1, 'bridge') && !hasTag(tags2, 'bridge')) return true;
+             if (!hasTag(tags1, 'bridge') && hasTag(tags2, 'bridge')) return true; // crossing bridges must use different layers
+
+             if (hasTag(tags1, 'bridge') && hasTag(tags2, 'bridge') && layer1 !== layer2) return true;
+           } else if (allowsBridge(featureType1) && hasTag(tags1, 'bridge')) return true;else if (allowsBridge(featureType2) && hasTag(tags2, 'bridge')) return true;

 
 

-         function bindTypeahead(key, value) {
-           if (isReadOnly(key.datum())) return;
+           if (allowsTunnel(featureType1) && allowsTunnel(featureType2)) {
+             if (hasTag(tags1, 'tunnel') && !hasTag(tags2, 'tunnel')) return true;
+             if (!hasTag(tags1, 'tunnel') && hasTag(tags2, 'tunnel')) return true; // crossing tunnels must use different layers

 
 

-           if (Array.isArray(value.datum().value)) {
-             value.call(uiCombobox(context, 'tag-value').minItems(1).fetcher(function (value, callback) {
-               var keyString = utilGetSetValue(key);
-               if (!_tags[keyString]) return;
+             if (hasTag(tags1, 'tunnel') && hasTag(tags2, 'tunnel') && layer1 !== layer2) return true;
+           } else if (allowsTunnel(featureType1) && hasTag(tags1, 'tunnel')) return true;else if (allowsTunnel(featureType2) && hasTag(tags2, 'tunnel')) return true; // don't flag crossing waterways and pier/highways

 
 

-               var data = _tags[keyString].filter(Boolean).map(function (tagValue) {
-                 return {
-                   value: tagValue,
-                   title: tagValue
-                 };
-               });

 
 

-               callback(data);
-             }));
-             return;
-           }
+           if (featureType1 === 'waterway' && featureType2 === 'highway' && tags2.man_made === 'pier') return true;
+           if (featureType2 === 'waterway' && featureType1 === 'highway' && tags1.man_made === 'pier') return true;

 
 

-           var geometry = context.graph().geometry(_entityIDs[0]);
-           key.call(uiCombobox(context, 'tag-key').fetcher(function (value, callback) {
-             taginfo.keys({
-               debounce: true,
-               geometry: geometry,
-               query: value
-             }, function (err, data) {
-               if (!err) {
-                 var filtered = data.filter(function (d) {
-                   return _tags[d.value] === undefined;
-                 });
-                 callback(sort(value, filtered));
-               }
-             });
-           }));
-           value.call(uiCombobox(context, 'tag-value').fetcher(function (value, callback) {
-             taginfo.values({
-               debounce: true,
-               key: utilGetSetValue(key),
-               geometry: geometry,
-               query: value
-             }, function (err, data) {
-               if (!err) callback(sort(value, data));
-             });
-           }));
+           if (featureType1 === 'building' || featureType2 === 'building') {
+             // for building crossings, different layers are enough
+             if (layer1 !== layer2) return true;
+           }

 
 

-           function sort(value, data) {
-             var sameletter = [];
-             var other = [];
+           return false;
+         } // highway values for which we shouldn't recommend connecting to waterways

 
 

-             for (var i = 0; i < data.length; i++) {
-               if (data[i].value.substring(0, value.length) === value) {
-                 sameletter.push(data[i]);
-               } else {
-                 other.push(data[i]);
-               }
-             }

 
 

-             return sameletter.concat(other);
-           }
-         }
+         var highwaysDisallowingFords = {
+           motorway: true,
+           motorway_link: true,
+           trunk: true,
+           trunk_link: true,
+           primary: true,
+           primary_link: true,
+           secondary: true,
+           secondary_link: true
+         };
+         var nonCrossingHighways = {
+           track: true
+         };

 
 

-         function unbind() {
-           var row = select(this);
-           row.selectAll('input.key').call(uiCombobox.off, context);
-           row.selectAll('input.value').call(uiCombobox.off, context);
-         }
+         function tagsForConnectionNodeIfAllowed(entity1, entity2, graph) {
+           var featureType1 = getFeatureType(entity1, graph);
+           var featureType2 = getFeatureType(entity2, graph);
+           var geometry1 = entity1.geometry(graph);
+           var geometry2 = entity2.geometry(graph);
+           var bothLines = geometry1 === 'line' && geometry2 === 'line';

 
 

-         function keyChange(d3_event, d) {
-           if (select(this).attr('readonly')) return;
-           var kOld = d.key; // exit if we are currently about to delete this row anyway - #6366
+           if (featureType1 === featureType2) {
+             if (featureType1 === 'highway') {
+               var entity1IsPath = osmPathHighwayTagValues[entity1.tags.highway];
+               var entity2IsPath = osmPathHighwayTagValues[entity2.tags.highway];

 
 

-           if (_pendingChange && _pendingChange.hasOwnProperty(kOld) && _pendingChange[kOld] === undefined) return;
-           var kNew = context.cleanTagKey(this.value.trim()); // allow no change if the key should be readonly
+               if ((entity1IsPath || entity2IsPath) && entity1IsPath !== entity2IsPath) {
+                 // one feature is a path but not both
+                 var roadFeature = entity1IsPath ? entity2 : entity1;

 
 

-           if (isReadOnly({
-             key: kNew
-           })) {
-             this.value = kOld;
-             return;
-           }
+                 if (nonCrossingHighways[roadFeature.tags.highway]) {
+                   // don't mark path connections with certain roads as crossings
+                   return {};
+                 }

 
 

-           if (kNew && kNew !== kOld && _tags[kNew] !== undefined) {
-             // new key is already in use, switch focus to the existing row
-             this.value = kOld; // reset the key
+                 var pathFeature = entity1IsPath ? entity1 : entity2;

 
 

-             section.selection().selectAll('.tag-list input.value').each(function (d) {
-               if (d.key === kNew) {
-                 // send focus to that other value combo instead
-                 var input = select(this).node();
-                 input.focus();
-                 input.select();
-               }
-             });
-             return;
-           }
+                 if (['marked', 'unmarked'].indexOf(pathFeature.tags.crossing) !== -1) {
+                   // if the path is a crossing, match the crossing type
+                   return bothLines ? {
+                     highway: 'crossing',
+                     crossing: pathFeature.tags.crossing
+                   } : {};
+                 } // don't add a `crossing` subtag to ambiguous crossings

 
 

-           var row = this.parentNode.parentNode;
-           var inputVal = select(row).selectAll('input.value');
-           var vNew = context.cleanTagValue(utilGetSetValue(inputVal));
-           _pendingChange = _pendingChange || {};

 
 

-           if (kOld) {
-             _pendingChange[kOld] = undefined;
-           }
+                 return bothLines ? {
+                   highway: 'crossing'
+                 } : {};
+               }

 
 

-           _pendingChange[kNew] = vNew; // update the ordered key index so this row doesn't change position
+               return {};
+             }

 
 

-           var existingKeyIndex = _orderedKeys.indexOf(kOld);
+             if (featureType1 === 'waterway') return {};
+             if (featureType1 === 'railway') return {};
+           } else {
+             var featureTypes = [featureType1, featureType2];

 
 

-           if (existingKeyIndex !== -1) _orderedKeys[existingKeyIndex] = kNew;
-           d.key = kNew; // update datum to avoid exit/enter on tag update
+             if (featureTypes.indexOf('highway') !== -1) {
+               if (featureTypes.indexOf('railway') !== -1) {
+                 if (!bothLines) return {};
+                 var isTram = entity1.tags.railway === 'tram' || entity2.tags.railway === 'tram';

 
 

-           d.value = vNew;
-           this.value = kNew;
-           utilGetSetValue(inputVal, vNew);
-           scheduleChange();
-         }
+                 if (osmPathHighwayTagValues[entity1.tags.highway] || osmPathHighwayTagValues[entity2.tags.highway]) {
+                   // path-tram connections use this tag
+                   if (isTram) return {
+                     railway: 'tram_crossing'
+                   }; // other path-rail connections use this tag

 
 

-         function valueChange(d3_event, d) {
-           if (isReadOnly(d)) return; // exit if this is a multiselection and no value was entered
+                   return {
+                     railway: 'crossing'
+                   };
+                 } else {
+                   // path-tram connections use this tag
+                   if (isTram) return {
+                     railway: 'tram_level_crossing'
+                   }; // other road-rail connections use this tag

 
 

-           if (typeof d.value !== 'string' && !this.value) return; // exit if we are currently about to delete this row anyway - #6366
+                   return {
+                     railway: 'level_crossing'
+                   };
+                 }
+               }

 
 

-           if (_pendingChange && _pendingChange.hasOwnProperty(d.key) && _pendingChange[d.key] === undefined) return;
-           _pendingChange = _pendingChange || {};
-           _pendingChange[d.key] = context.cleanTagValue(this.value);
-           scheduleChange();
-         }
+               if (featureTypes.indexOf('waterway') !== -1) {
+                 // do not allow fords on structures
+                 if (hasTag(entity1.tags, 'tunnel') && hasTag(entity2.tags, 'tunnel')) return null;
+                 if (hasTag(entity1.tags, 'bridge') && hasTag(entity2.tags, 'bridge')) return null;

 
 

-         function removeTag(d3_event, d) {
-           if (isReadOnly(d)) return;
+                 if (highwaysDisallowingFords[entity1.tags.highway] || highwaysDisallowingFords[entity2.tags.highway]) {
+                   // do not allow fords on major highways
+                   return null;
+                 }

 
 

-           if (d.key === '') {
-             // removing the blank row
-             _showBlank = false;
-             section.reRender();
-           } else {
-             // remove the key from the ordered key index
-             _orderedKeys = _orderedKeys.filter(function (key) {
-               return key !== d.key;
-             });
-             _pendingChange = _pendingChange || {};
-             _pendingChange[d.key] = undefined;
-             scheduleChange();
+                 return bothLines ? {
+                   ford: 'yes'
+                 } : {};
+               }
+             }

            }
            }

-         }

 
 

-         function addTag() {
-           // Delay render in case this click is blurring an edited combo.
-           // Without the setTimeout, the `content` render would wipe out the pending tag change.
-           window.setTimeout(function () {
-             _showBlank = true;
-             section.reRender();
-             section.selection().selectAll('.tag-list li:last-child input.key').node().focus();
-           }, 20);
+           return null;

          }
 
          }
 

-         function scheduleChange() {
-           // Cache IDs in case the editor is reloaded before the change event is called. - #6028
-           var entityIDs = _entityIDs; // Delay change in case this change is blurring an edited combo. - #5878
+         function findCrossingsByWay(way1, graph, tree) {
+           var edgeCrossInfos = [];
+           if (way1.type !== 'way') return edgeCrossInfos;
+           var taggedFeature1 = getFeatureWithFeatureTypeTagsForWay(way1, graph);
+           var way1FeatureType = getFeatureType(taggedFeature1, graph);
+           if (way1FeatureType === null) return edgeCrossInfos;
+           var checkedSingleCrossingWays = {}; // declare vars ahead of time to reduce garbage collection

 
 

-           window.setTimeout(function () {
-             if (!_pendingChange) return;
-             dispatch$1.call('change', this, entityIDs, _pendingChange);
-             _pendingChange = null;
-           }, 10);
-         }
+           var i, j;
+           var extent;
+           var n1, n2, nA, nB, nAId, nBId;
+           var segment1, segment2;
+           var oneOnly;
+           var segmentInfos, segment2Info, way2, taggedFeature2, way2FeatureType;
+           var way1Nodes = graph.childNodes(way1);
+           var comparedWays = {};

 
 

-         section.state = function (val) {
-           if (!arguments.length) return _state;
+           for (i = 0; i < way1Nodes.length - 1; i++) {
+             n1 = way1Nodes[i];
+             n2 = way1Nodes[i + 1];
+             extent = geoExtent([[Math.min(n1.loc[0], n2.loc[0]), Math.min(n1.loc[1], n2.loc[1])], [Math.max(n1.loc[0], n2.loc[0]), Math.max(n1.loc[1], n2.loc[1])]]); // Optimize by only checking overlapping segments, not every segment
+             // of overlapping ways

 
 

-           if (_state !== val) {
-             _orderedKeys = [];
-             _state = val;
-           }
+             segmentInfos = tree.waySegments(extent, graph);

 
 

-           return section;
-         };
+             for (j = 0; j < segmentInfos.length; j++) {
+               segment2Info = segmentInfos[j]; // don't check for self-intersection in this validation

 
 

-         section.presets = function (val) {
-           if (!arguments.length) return _presets;
-           _presets = val;
+               if (segment2Info.wayId === way1.id) continue; // skip if this way was already checked and only one issue is needed

 
 

-           if (_presets && _presets.length && _presets[0].isFallback()) {
-             section.disclosureExpanded(true); // don't collapse the disclosure if the mapper used the raw tag editor - #1881
-           } else if (!_didInteract) {
-             section.disclosureExpanded(null);
-           }
+               if (checkedSingleCrossingWays[segment2Info.wayId]) continue; // mark this way as checked even if there are no crossings

 
 

-           return section;
-         };
+               comparedWays[segment2Info.wayId] = true;
+               way2 = graph.hasEntity(segment2Info.wayId);
+               if (!way2) continue;
+               taggedFeature2 = getFeatureWithFeatureTypeTagsForWay(way2, graph); // only check crossing highway, waterway, building, and railway

 
 

-         section.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val;
-           return section;
-         };
+               way2FeatureType = getFeatureType(taggedFeature2, graph);

 
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
+               if (way2FeatureType === null || isLegitCrossing(taggedFeature1.tags, way1FeatureType, taggedFeature2.tags, way2FeatureType)) {
+                 continue;
+               } // create only one issue for building crossings

 
 

-           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
-             _entityIDs = val;
-             _orderedKeys = [];
-           }

 
 

-           return section;
-         }; // pass an array of regular expressions to test against the tag key
+               oneOnly = way1FeatureType === 'building' || way2FeatureType === 'building';
+               nAId = segment2Info.nodes[0];
+               nBId = segment2Info.nodes[1];

 
 

+               if (nAId === n1.id || nAId === n2.id || nBId === n1.id || nBId === n2.id) {
+                 // n1 or n2 is a connection node; skip
+                 continue;
+               }

 
 

-         section.readOnlyTags = function (val) {
-           if (!arguments.length) return _readOnlyTags;
-           _readOnlyTags = val;
-           return section;
-         };
+               nA = graph.hasEntity(nAId);
+               if (!nA) continue;
+               nB = graph.hasEntity(nBId);
+               if (!nB) continue;
+               segment1 = [n1.loc, n2.loc];
+               segment2 = [nA.loc, nB.loc];
+               var point = geoLineIntersection(segment1, segment2);

 
 

-         return utilRebind(section, dispatch$1, 'on');
-       }
+               if (point) {
+                 edgeCrossInfos.push({
+                   wayInfos: [{
+                     way: way1,
+                     featureType: way1FeatureType,
+                     edge: [n1.id, n2.id]
+                   }, {
+                     way: way2,
+                     featureType: way2FeatureType,
+                     edge: [nA.id, nB.id]
+                   }],
+                   crossPoint: point
+                 });

 
 

-       function uiDataEditor(context) {
-         var dataHeader = uiDataHeader();
-         var rawTagEditor = uiSectionRawTagEditor('custom-data-tag-editor', context).expandedByDefault(true).readOnlyTags([/./]);
+                 if (oneOnly) {
+                   checkedSingleCrossingWays[way2.id] = true;
+                   break;
+                 }
+               }
+             }
+           }

 
 

-         var _datum;
+           return edgeCrossInfos;
+         }

 
 

-         function dataEditor(selection) {
-           var header = selection.selectAll('.header').data([0]);
-           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             context.enter(modeBrowse(context));
-           }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('map_data.title'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body);
-           var editor = body.selectAll('.data-editor').data([0]); // enter/update
+         function waysToCheck(entity, graph) {
+           var featureType = getFeatureType(entity, graph);
+           if (!featureType) return [];

 
 

-           editor.enter().append('div').attr('class', 'modal-section data-editor').merge(editor).call(dataHeader.datum(_datum));
-           var rte = body.selectAll('.raw-tag-editor').data([0]); // enter/update
+           if (entity.type === 'way') {
+             return [entity];
+           } else if (entity.type === 'relation') {
+             return entity.members.reduce(function (array, member) {
+               if (member.type === 'way' && ( // only look at geometry ways
+               !member.role || member.role === 'outer' || member.role === 'inner')) {
+                 var entity = graph.hasEntity(member.id); // don't add duplicates

 
 

-           rte.enter().append('div').attr('class', 'raw-tag-editor data-editor').merge(rte).call(rawTagEditor.tags(_datum && _datum.properties || {}).state('hover').render).selectAll('textarea.tag-text').attr('readonly', true).classed('readonly', true);
-         }
+                 if (entity && array.indexOf(entity) === -1) {
+                   array.push(entity);
+                 }
+               }

 
 

-         dataEditor.datum = function (val) {
-           if (!arguments.length) return _datum;
-           _datum = val;
-           return this;
-         };
+               return array;
+             }, []);
+           }

 
 

-         return dataEditor;
-       }
+           return [];
+         }

 
 

-       function modeSelectData(context, selectedDatum) {
-         var mode = {
-           id: 'select-data',
-           button: 'browse'
-         };
-         var keybinding = utilKeybinding('select-data');
-         var dataEditor = uiDataEditor(context);
-         var behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior]; // class the data as selected, or return to browse mode if the data is gone
+         var validation = function checkCrossingWays(entity, graph) {
+           var tree = context.history().tree();
+           var ways = waysToCheck(entity, graph);
+           var issues = []; // declare these here to reduce garbage collection

 
 

-         function selectData(d3_event, drawn) {
-           var selection = context.surface().selectAll('.layer-mapdata .data' + selectedDatum.__featurehash__);
+           var wayIndex, crossingIndex, crossings;

 
 

-           if (selection.empty()) {
-             // Return to browse mode if selected DOM elements have
-             // disappeared because the user moved them out of view..
-             var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;
+           for (wayIndex in ways) {
+             crossings = findCrossingsByWay(ways[wayIndex], graph, tree);

 
 

-             if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
-               context.enter(modeBrowse(context));
+             for (crossingIndex in crossings) {
+               issues.push(createIssue(crossings[crossingIndex], graph));

              }
              }

-           } else {
-             selection.classed('selected', true);

            }
            }

-         }
-
-         function esc() {
-           if (context.container().select('.combobox').size()) return;
-           context.enter(modeBrowse(context));
-         }

 
 

-         mode.zoomToSelected = function () {
-           var extent = geoExtent(d3_geoBounds(selectedDatum));
-           context.map().centerZoomEase(extent.center(), context.map().trimmedExtentZoom(extent));
+           return issues;

          };
 
          };
 

-         mode.enter = function () {
-           behaviors.forEach(context.install);
-           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
-           select(document).call(keybinding);
-           selectData();
-           var sidebar = context.ui().sidebar;
-           sidebar.show(dataEditor.datum(selectedDatum)); // expand the sidebar, avoid obscuring the data if needed
+         function createIssue(crossing, graph) {
+           // use the entities with the tags that define the feature type
+           crossing.wayInfos.sort(function (way1Info, way2Info) {
+             var type1 = way1Info.featureType;
+             var type2 = way2Info.featureType;

 
 

-           var extent = geoExtent(d3_geoBounds(selectedDatum));
-           sidebar.expand(sidebar.intersects(extent));
-           context.map().on('drawn.select-data', selectData);
-         };
+             if (type1 === type2) {
+               return utilDisplayLabel(way1Info.way, graph) > utilDisplayLabel(way2Info.way, graph);
+             } else if (type1 === 'waterway') {
+               return true;
+             } else if (type2 === 'waterway') {
+               return false;
+             }

 
 

-         mode.exit = function () {
-           behaviors.forEach(context.uninstall);
-           select(document).call(keybinding.unbind);
-           context.surface().selectAll('.layer-mapdata .selected').classed('selected hover', false);
-           context.map().on('drawn.select-data', null);
-           context.ui().sidebar.hide();
-         };
+             return type1 < type2;
+           });
+           var entities = crossing.wayInfos.map(function (wayInfo) {
+             return getFeatureWithFeatureTypeTagsForWay(wayInfo.way, graph);
+           });
+           var edges = [crossing.wayInfos[0].edge, crossing.wayInfos[1].edge];
+           var featureTypes = [crossing.wayInfos[0].featureType, crossing.wayInfos[1].featureType];
+           var connectionTags = tagsForConnectionNodeIfAllowed(entities[0], entities[1], graph);
+           var featureType1 = crossing.wayInfos[0].featureType;
+           var featureType2 = crossing.wayInfos[1].featureType;
+           var isCrossingIndoors = taggedAsIndoor(entities[0].tags) && taggedAsIndoor(entities[1].tags);
+           var isCrossingTunnels = allowsTunnel(featureType1) && hasTag(entities[0].tags, 'tunnel') && allowsTunnel(featureType2) && hasTag(entities[1].tags, 'tunnel');
+           var isCrossingBridges = allowsBridge(featureType1) && hasTag(entities[0].tags, 'bridge') && allowsBridge(featureType2) && hasTag(entities[1].tags, 'bridge');
+           var subtype = [featureType1, featureType2].sort().join('-');
+           var crossingTypeID = subtype;
+
+           if (isCrossingIndoors) {
+             crossingTypeID = 'indoor-indoor';
+           } else if (isCrossingTunnels) {
+             crossingTypeID = 'tunnel-tunnel';
+           } else if (isCrossingBridges) {
+             crossingTypeID = 'bridge-bridge';
+           }
+
+           if (connectionTags && (isCrossingIndoors || isCrossingTunnels || isCrossingBridges)) {
+             crossingTypeID += '_connectable';
+           } // Differentiate based on the loc rounded to 4 digits, since two ways can cross multiple times.
+
+
+           var uniqueID = '' + crossing.crossPoint[0].toFixed(4) + ',' + crossing.crossPoint[1].toFixed(4);
+           return new validationIssue({
+             type: type,
+             subtype: subtype,
+             severity: 'warning',
+             message: function message(context) {
+               var graph = context.graph();
+               var entity1 = graph.hasEntity(this.entityIds[0]),
+                   entity2 = graph.hasEntity(this.entityIds[1]);
+               return entity1 && entity2 ? _t.html('issues.crossing_ways.message', {
+                 feature: utilDisplayLabel(entity1, graph),
+                 feature2: utilDisplayLabel(entity2, graph)
+               }) : '';
+             },
+             reference: showReference,
+             entityIds: entities.map(function (entity) {
+               return entity.id;
+             }),
+             data: {
+               edges: edges,
+               featureTypes: featureTypes,
+               connectionTags: connectionTags
+             },
+             hash: uniqueID,
+             loc: crossing.crossPoint,
+             dynamicFixes: function dynamicFixes(context) {
+               var mode = context.mode();
+               if (!mode || mode.id !== 'select' || mode.selectedIDs().length !== 1) return [];
+               var selectedIndex = this.entityIds[0] === mode.selectedIDs()[0] ? 0 : 1;
+               var selectedFeatureType = this.data.featureTypes[selectedIndex];
+               var otherFeatureType = this.data.featureTypes[selectedIndex === 0 ? 1 : 0];
+               var fixes = [];

 
 

-         return mode;
-       }
+               if (connectionTags) {
+                 fixes.push(makeConnectWaysFix(this.data.connectionTags));
+               }

 
 

-       function uiImproveOsmComments() {
-         var _qaItem;
+               if (isCrossingIndoors) {
+                 fixes.push(new validationIssueFix({
+                   icon: 'iD-icon-layers',
+                   title: _t.html('issues.fix.use_different_levels.title')
+                 }));
+               } else if (isCrossingTunnels || isCrossingBridges || featureType1 === 'building' || featureType2 === 'building') {
+                 fixes.push(makeChangeLayerFix('higher'));
+                 fixes.push(makeChangeLayerFix('lower')); // can only add bridge/tunnel if both features are lines
+               } else if (context.graph().geometry(this.entityIds[0]) === 'line' && context.graph().geometry(this.entityIds[1]) === 'line') {
+                 // don't recommend adding bridges to waterways since they're uncommon
+                 if (allowsBridge(selectedFeatureType) && selectedFeatureType !== 'waterway') {
+                   fixes.push(makeAddBridgeOrTunnelFix('add_a_bridge', 'temaki-bridge', 'bridge'));
+                 } // don't recommend adding tunnels under waterways since they're uncommon

 
 

-         function issueComments(selection) {
-           // make the div immediately so it appears above the buttons
-           var comments = selection.selectAll('.comments-container').data([0]);
-           comments = comments.enter().append('div').attr('class', 'comments-container').merge(comments); // must retrieve comments from API before they can be displayed

 
 

-           services.improveOSM.getComments(_qaItem).then(function (d) {
-             if (!d.comments) return; // nothing to do here
+                 var skipTunnelFix = otherFeatureType === 'waterway' && selectedFeatureType !== 'waterway';

 
 

-             var commentEnter = comments.selectAll('.comment').data(d.comments).enter().append('div').attr('class', 'comment');
-             commentEnter.append('div').attr('class', 'comment-avatar').call(svgIcon('#iD-icon-avatar', 'comment-avatar-icon'));
-             var mainEnter = commentEnter.append('div').attr('class', 'comment-main');
-             var metadataEnter = mainEnter.append('div').attr('class', 'comment-metadata');
-             metadataEnter.append('div').attr('class', 'comment-author').each(function (d) {
-               var osm = services.osm;
-               var selection = select(this);
+                 if (allowsTunnel(selectedFeatureType) && !skipTunnelFix) {
+                   fixes.push(makeAddBridgeOrTunnelFix('add_a_tunnel', 'temaki-tunnel', 'tunnel'));
+                 }
+               } // repositioning the features is always an option

 
 

-               if (osm && d.username) {
-                 selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.username)).attr('target', '_blank');
-               }

 
 

-               selection.html(function (d) {
-                 return d.username;
-               });
-             });
-             metadataEnter.append('div').attr('class', 'comment-date').html(function (d) {
-               return _t.html('note.status.commented', {
-                 when: localeDateString(d.timestamp)
-               });
-             });
-             mainEnter.append('div').attr('class', 'comment-text').append('p').html(function (d) {
-               return d.text;
-             });
-           })["catch"](function (err) {
-             console.log(err); // eslint-disable-line no-console
+               fixes.push(new validationIssueFix({
+                 icon: 'iD-operation-move',
+                 title: _t.html('issues.fix.reposition_features.title')
+               }));
+               return fixes;
+             }

            });
            });

-         }
-
-         function localeDateString(s) {
-           if (!s) return null;
-           var options = {
-             day: 'numeric',
-             month: 'short',
-             year: 'numeric'
-           };
-           var d = new Date(s * 1000); // timestamp is served in seconds, date takes ms

 
 

-           if (isNaN(d.getTime())) return null;
-           return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.crossing_ways.' + crossingTypeID + '.reference'));
+           }

          }
 
          }
 

-         issueComments.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return issueComments;
-         };
-
-         return issueComments;
-       }
-
-       function uiImproveOsmDetails(context) {
-         var _qaItem;
+         function makeAddBridgeOrTunnelFix(fixTitleID, iconName, bridgeOrTunnel) {
+           return new validationIssueFix({
+             icon: iconName,
+             title: _t.html('issues.fix.' + fixTitleID + '.title'),
+             onClick: function onClick(context) {
+               var mode = context.mode();
+               if (!mode || mode.id !== 'select') return;
+               var selectedIDs = mode.selectedIDs();
+               if (selectedIDs.length !== 1) return;
+               var selectedWayID = selectedIDs[0];
+               if (!context.hasEntity(selectedWayID)) return;
+               var resultWayIDs = [selectedWayID];
+               var edge, crossedEdge, crossedWayID;

 
 

-         function issueDetail(d) {
-           if (d.desc) return d.desc;
-           var issueKey = d.issueKey;
-           d.replacements = d.replacements || {};
-           d.replacements["default"] = _t.html('inspector.unknown'); // special key `default` works as a fallback string
+               if (this.issue.entityIds[0] === selectedWayID) {
+                 edge = this.issue.data.edges[0];
+                 crossedEdge = this.issue.data.edges[1];
+                 crossedWayID = this.issue.entityIds[1];
+               } else {
+                 edge = this.issue.data.edges[1];
+                 crossedEdge = this.issue.data.edges[0];
+                 crossedWayID = this.issue.entityIds[0];
+               }

 
 

-           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".description"), d.replacements);
-         }
+               var crossingLoc = this.issue.loc;
+               var projection = context.projection;

 
 

-         function improveOsmDetails(selection) {
-           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           details.exit().remove();
-           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // description
+               var action = function actionAddStructure(graph) {
+                 var edgeNodes = [graph.entity(edge[0]), graph.entity(edge[1])];
+                 var crossedWay = graph.hasEntity(crossedWayID); // use the explicit width of the crossed feature as the structure length, if available

 
 

-           var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-           descriptionEnter.append('h4').html(_t.html('QA.keepRight.detail_description'));
-           descriptionEnter.append('div').attr('class', 'qa-details-description-text').html(issueDetail); // If there are entity links in the error message..
+                 var structLengthMeters = crossedWay && crossedWay.tags.width && parseFloat(crossedWay.tags.width);

 
 

-           var relatedEntities = [];
-           descriptionEnter.selectAll('.error_entity_link, .error_object_link').attr('href', '#').each(function () {
-             var link = select(this);
-             var isObjectLink = link.classed('error_object_link');
-             var entityID = isObjectLink ? utilEntityRoot(_qaItem.objectType) + _qaItem.objectId : this.textContent;
-             var entity = context.hasEntity(entityID);
-             relatedEntities.push(entityID); // Add click handler
+                 if (!structLengthMeters) {
+                   // if no explicit width is set, approximate the width based on the tags
+                   structLengthMeters = crossedWay && crossedWay.impliedLineWidthMeters();
+                 }

 
 

-             link.on('mouseenter', function () {
-               utilHighlightEntities([entityID], true, context);
-             }).on('mouseleave', function () {
-               utilHighlightEntities([entityID], false, context);
-             }).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               utilHighlightEntities([entityID], false, context);
-               var osmlayer = context.layers().layer('osm');
+                 if (structLengthMeters) {
+                   if (getFeatureType(crossedWay, graph) === 'railway') {
+                     // bridges over railways are generally much longer than the rail bed itself, compensate
+                     structLengthMeters *= 2;
+                   }
+                 } else {
+                   // should ideally never land here since all rail/water/road tags should have an implied width
+                   structLengthMeters = 8;
+                 }

 
 

-               if (!osmlayer.enabled()) {
-                 osmlayer.enabled(true);
-               }
+                 var a1 = geoAngle(edgeNodes[0], edgeNodes[1], projection) + Math.PI;
+                 var a2 = geoAngle(graph.entity(crossedEdge[0]), graph.entity(crossedEdge[1]), projection) + Math.PI;
+                 var crossingAngle = Math.max(a1, a2) - Math.min(a1, a2);
+                 if (crossingAngle > Math.PI) crossingAngle -= Math.PI; // lengthen the structure to account for the angle of the crossing

 
 

-               context.map().centerZoom(_qaItem.loc, 20);
+                 structLengthMeters = structLengthMeters / 2 / Math.sin(crossingAngle) * 2; // add padding since the structure must extend past the edges of the crossed feature

 
 

-               if (entity) {
-                 context.enter(modeSelect(context, [entityID]));
-               } else {
-                 context.loadEntity(entityID, function () {
-                   context.enter(modeSelect(context, [entityID]));
-                 });
-               }
-             }); // Replace with friendly name if possible
-             // (The entity may not yet be loaded into the graph)
+                 structLengthMeters += 4; // clamp the length to a reasonable range

 
 

-             if (entity) {
-               var name = utilDisplayName(entity); // try to use common name
+                 structLengthMeters = Math.min(Math.max(structLengthMeters, 4), 50);

 
 

-               if (!name && !isObjectLink) {
-                 var preset = _mainPresetIndex.match(entity, context.graph());
-                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
-               }
+                 function geomToProj(geoPoint) {
+                   return [geoLonToMeters(geoPoint[0], geoPoint[1]), geoLatToMeters(geoPoint[1])];
+                 }

 
 

-               if (name) {
-                 this.innerText = name;
-               }
-             }
-           }); // Don't hide entities related to this error - #5880
+                 function projToGeom(projPoint) {
+                   var lat = geoMetersToLat(projPoint[1]);
+                   return [geoMetersToLon(projPoint[0], lat), lat];
+                 }

 
 

-           context.features().forceVisible(relatedEntities);
-           context.map().pan([0, 0]); // trigger a redraw
-         }
+                 var projEdgeNode1 = geomToProj(edgeNodes[0].loc);
+                 var projEdgeNode2 = geomToProj(edgeNodes[1].loc);
+                 var projectedAngle = geoVecAngle(projEdgeNode1, projEdgeNode2);
+                 var projectedCrossingLoc = geomToProj(crossingLoc);
+                 var linearToSphericalMetersRatio = geoVecLength(projEdgeNode1, projEdgeNode2) / geoSphericalDistance(edgeNodes[0].loc, edgeNodes[1].loc);

 
 

-         improveOsmDetails.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmDetails;
-         };
+                 function locSphericalDistanceFromCrossingLoc(angle, distanceMeters) {
+                   var lengthSphericalMeters = distanceMeters * linearToSphericalMetersRatio;
+                   return projToGeom([projectedCrossingLoc[0] + Math.cos(angle) * lengthSphericalMeters, projectedCrossingLoc[1] + Math.sin(angle) * lengthSphericalMeters]);
+                 }

 
 

-         return improveOsmDetails;
-       }
+                 var endpointLocGetter1 = function endpointLocGetter1(lengthMeters) {
+                   return locSphericalDistanceFromCrossingLoc(projectedAngle, lengthMeters);
+                 };

 
 

-       function uiImproveOsmHeader() {
-         var _qaItem;
+                 var endpointLocGetter2 = function endpointLocGetter2(lengthMeters) {
+                   return locSphericalDistanceFromCrossingLoc(projectedAngle + Math.PI, lengthMeters);
+                 }; // avoid creating very short edges from splitting too close to another node

 
 

-         function issueTitle(d) {
-           var issueKey = d.issueKey;
-           d.replacements = d.replacements || {};
-           d.replacements["default"] = _t.html('inspector.unknown'); // special key `default` works as a fallback string

 
 

-           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".title"), d.replacements);
-         }
+                 var minEdgeLengthMeters = 0.55; // decide where to bound the structure along the way, splitting as necessary

 
 

-         function improveOsmHeader(selection) {
-           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           header.exit().remove();
-           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
-           var svgEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
-             return d.id < 0;
-           }).append('svg').attr('width', '20px').attr('height', '30px').attr('viewbox', '0 0 20 30').attr('class', function (d) {
-             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
-           });
-           svgEnter.append('polygon').attr('fill', 'currentColor').attr('class', 'qaItem-fill').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
-           svgEnter.append('use').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('transform', 'translate(3.5, 5)').attr('xlink:href', function (d) {
-             var picon = d.icon;
+                 function determineEndpoint(edge, endNode, locGetter) {
+                   var newNode;
+                   var idealLengthMeters = structLengthMeters / 2; // distance between the crossing location and the end of the edge,
+                   // the maximum length of this side of the structure

 
 

-             if (!picon) {
-               return '';
-             } else {
-               var isMaki = /^maki-/.test(picon);
-               return "#".concat(picon).concat(isMaki ? '-11' : '');
-             }
-           });
-           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);
-         }
+                   var crossingToEdgeEndDistance = geoSphericalDistance(crossingLoc, endNode.loc);

 
 

-         improveOsmHeader.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmHeader;
-         };
+                   if (crossingToEdgeEndDistance - idealLengthMeters > minEdgeLengthMeters) {
+                     // the edge is long enough to insert a new node
+                     // the loc that would result in the full expected length
+                     var idealNodeLoc = locGetter(idealLengthMeters);
+                     newNode = osmNode();
+                     graph = actionAddMidpoint({
+                       loc: idealNodeLoc,
+                       edge: edge
+                     }, newNode)(graph);
+                   } else {
+                     var edgeCount = 0;
+                     endNode.parentIntersectionWays(graph).forEach(function (way) {
+                       way.nodes.forEach(function (nodeID) {
+                         if (nodeID === endNode.id) {
+                           if (endNode.id === way.first() && endNode.id !== way.last() || endNode.id === way.last() && endNode.id !== way.first()) {
+                             edgeCount += 1;
+                           } else {
+                             edgeCount += 2;
+                           }
+                         }
+                       });
+                     });

 
 

-         return improveOsmHeader;
-       }
+                     if (edgeCount >= 3) {
+                       // the end node is a junction, try to leave a segment
+                       // between it and the structure - #7202
+                       var insetLength = crossingToEdgeEndDistance - minEdgeLengthMeters;

 
 

-       function uiImproveOsmEditor(context) {
-         var dispatch$1 = dispatch('change');
-         var qaDetails = uiImproveOsmDetails(context);
-         var qaComments = uiImproveOsmComments();
-         var qaHeader = uiImproveOsmHeader();
+                       if (insetLength > minEdgeLengthMeters) {
+                         var insetNodeLoc = locGetter(insetLength);
+                         newNode = osmNode();
+                         graph = actionAddMidpoint({
+                           loc: insetNodeLoc,
+                           edge: edge
+                         }, newNode)(graph);
+                       }
+                     }
+                   } // if the edge is too short to subdivide as desired, then
+                   // just bound the structure at the existing end node

 
 

-         var _qaItem;

 
 

-         function improveOsmEditor(selection) {
-           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             return context.enter(modeBrowse(context));
-           }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('QA.improveOSM.title'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body);
-           var editor = body.selectAll('.qa-editor').data([0]);
-           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(qaComments.issue(_qaItem)).call(improveOsmSaveSection);
-         }
+                   if (!newNode) newNode = endNode;
+                   var splitAction = actionSplit([newNode.id]).limitWays(resultWayIDs); // only split selected or created ways
+                   // do the split

 
 

-         function improveOsmSaveSection(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
+                   graph = splitAction(graph);

 
 

-           var isShown = _qaItem && (isSelected || _qaItem.newComment || _qaItem.comment);
-           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           }); // exit
+                   if (splitAction.getCreatedWayIDs().length) {
+                     resultWayIDs.push(splitAction.getCreatedWayIDs()[0]);
+                   }

 
 

-           saveSection.exit().remove(); // enter
+                   return newNode;
+                 }

 
 

-           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
-           saveSectionEnter.append('h4').attr('class', '.qa-save-header').html(_t.html('note.newComment'));
-           saveSectionEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('QA.keepRight.comment_placeholder')).attr('maxlength', 1000).property('value', function (d) {
-             return d.newComment;
-           }).call(utilNoAuto).on('input', changeInput).on('blur', changeInput); // update
+                 var structEndNode1 = determineEndpoint(edge, edgeNodes[1], endpointLocGetter1);
+                 var structEndNode2 = determineEndpoint([edgeNodes[0].id, structEndNode1.id], edgeNodes[0], endpointLocGetter2);
+                 var structureWay = resultWayIDs.map(function (id) {
+                   return graph.entity(id);
+                 }).find(function (way) {
+                   return way.nodes.indexOf(structEndNode1.id) !== -1 && way.nodes.indexOf(structEndNode2.id) !== -1;
+                 });
+                 var tags = Object.assign({}, structureWay.tags); // copy tags

 
 

-           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+                 if (bridgeOrTunnel === 'bridge') {
+                   tags.bridge = 'yes';
+                   tags.layer = '1';
+                 } else {
+                   var tunnelValue = 'yes';

 
 

-           function changeInput() {
-             var input = select(this);
-             var val = input.property('value').trim();
+                   if (getFeatureType(structureWay, graph) === 'waterway') {
+                     // use `tunnel=culvert` for waterways by default
+                     tunnelValue = 'culvert';
+                   }

 
 

-             if (val === '') {
-               val = undefined;
-             } // store the unsaved comment with the issue itself
+                   tags.tunnel = tunnelValue;
+                   tags.layer = '-1';
+                 } // apply the structure tags to the way

 
 
 
 

-             _qaItem = _qaItem.update({
-               newComment: val
-             });
-             var qaService = services.improveOSM;
+                 graph = actionChangeTags(structureWay.id, tags)(graph);
+                 return graph;
+               };

 
 

-             if (qaService) {
-               qaService.replaceItem(_qaItem);
+               context.perform(action, _t('issues.fix.' + fixTitleID + '.annotation'));
+               context.enter(modeSelect(context, resultWayIDs));

              }
              }

-
-             saveSection.call(qaSaveButtons);
-           }
+           });

          }
 
          }
 

-         function qaSaveButtons(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
-
-           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+         function makeConnectWaysFix(connectionTags) {
+           var fixTitleID = 'connect_features';

 
 

-           buttonSection.exit().remove(); // enter
+           if (connectionTags.ford) {
+             fixTitleID = 'connect_using_ford';
+           }

 
 

-           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
-           buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('QA.keepRight.save_comment'));
-           buttonEnter.append('button').attr('class', 'button close-button action');
-           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update
+           return new validationIssueFix({
+             icon: 'iD-icon-crossing',
+             title: _t.html('issues.fix.' + fixTitleID + '.title'),
+             onClick: function onClick(context) {
+               var loc = this.issue.loc;
+               var connectionTags = this.issue.data.connectionTags;
+               var edges = this.issue.data.edges;
+               context.perform(function actionConnectCrossingWays(graph) {
+                 // create the new node for the points
+                 var node = osmNode({
+                   loc: loc,
+                   tags: connectionTags
+                 });
+                 graph = graph.replace(node);
+                 var nodesToMerge = [node.id];
+                 var mergeThresholdInMeters = 0.75;
+                 edges.forEach(function (edge) {
+                   var edgeNodes = [graph.entity(edge[0]), graph.entity(edge[1])];
+                   var nearby = geoSphericalClosestNode(edgeNodes, loc); // if there is already a suitable node nearby, use that
+                   // use the node if node has no interesting tags or if it is a crossing node #8326

 
 

-           buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.select('.comment-button').attr('disabled', function (d) {
-             return d.newComment ? null : true;
-           }).on('click.comment', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+                   if ((!nearby.node.hasInterestingTags() || nearby.node.isCrossing()) && nearby.distance < mergeThresholdInMeters) {
+                     nodesToMerge.push(nearby.node.id); // else add the new node to the way
+                   } else {
+                     graph = actionAddMidpoint({
+                       loc: loc,
+                       edge: edge
+                     }, node)(graph);
+                   }
+                 });

 
 

-             var qaService = services.improveOSM;
+                 if (nodesToMerge.length > 1) {
+                   // if we're using nearby nodes, merge them with the new node
+                   graph = actionMergeNodes(nodesToMerge, loc)(graph);
+                 }

 
 

-             if (qaService) {
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
+                 return graph;
+               }, _t('issues.fix.connect_crossing_features.annotation'));

              }
            });
              }
            });

-           buttonSection.select('.close-button').html(function (d) {
-             var andComment = d.newComment ? '_comment' : '';
-             return _t.html("QA.keepRight.close".concat(andComment));
-           }).on('click.close', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+         }

 
 

-             var qaService = services.improveOSM;
+         function makeChangeLayerFix(higherOrLower) {
+           return new validationIssueFix({
+             icon: 'iD-icon-' + (higherOrLower === 'higher' ? 'up' : 'down'),
+             title: _t.html('issues.fix.tag_this_as_' + higherOrLower + '.title'),
+             onClick: function onClick(context) {
+               var mode = context.mode();
+               if (!mode || mode.id !== 'select') return;
+               var selectedIDs = mode.selectedIDs();
+               if (selectedIDs.length !== 1) return;
+               var selectedID = selectedIDs[0];
+               if (!this.issue.entityIds.some(function (entityId) {
+                 return entityId === selectedID;
+               })) return;
+               var entity = context.hasEntity(selectedID);
+               if (!entity) return;
+               var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-             if (qaService) {
-               d.newStatus = 'SOLVED';
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
-             }
-           });
-           buttonSection.select('.ignore-button').html(function (d) {
-             var andComment = d.newComment ? '_comment' : '';
-             return _t.html("QA.keepRight.ignore".concat(andComment));
-           }).on('click.ignore', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+               var layer = tags.layer && Number(tags.layer);

 
 

-             var qaService = services.improveOSM;
+               if (layer && !isNaN(layer)) {
+                 if (higherOrLower === 'higher') {
+                   layer += 1;
+                 } else {
+                   layer -= 1;
+                 }
+               } else {
+                 if (higherOrLower === 'higher') {
+                   layer = 1;
+                 } else {
+                   layer = -1;
+                 }
+               }

 
 

-             if (qaService) {
-               d.newStatus = 'INVALID';
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
+               tags.layer = layer.toString();
+               context.perform(actionChangeTags(entity.id, tags), _t('operations.change_tags.annotation'));

              }
            });
              }
            });

-         } // NOTE: Don't change method name until UI v3 is merged
+         }
+
+         validation.type = type;
+         return validation;
+       }

 
 

+       function behaviorDrawWay(context, wayID, mode, startGraph) {
+         var keybinding = utilKeybinding('drawWay');
+         var dispatch = dispatch$8('rejectedSelfIntersection');
+         var behavior = behaviorDraw(context); // Must be set by `drawWay.nodeIndex` before each install of this behavior.

 
 

-         improveOsmEditor.error = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmEditor;
-         };
+         var _nodeIndex;

 
 

-         return utilRebind(improveOsmEditor, dispatch$1, 'on');
-       }
+         var _origWay;
+
+         var _wayGeometry;
+
+         var _headNodeID;

 
 

-       function uiKeepRightDetails(context) {
-         var _qaItem;
+         var _annotation;

 
 

-         function issueDetail(d) {
-           var itemType = d.itemType,
-               parentIssueType = d.parentIssueType;
-           var unknown = _t.html('inspector.unknown');
-           var replacements = d.replacements || {};
-           replacements["default"] = unknown; // special key `default` works as a fallback string
+         var _pointerHasMoved = false; // The osmNode to be placed.
+         // This is temporary and just follows the mouse cursor until an "add" event occurs.

 
 

-           var detail = _t.html("QA.keepRight.errorTypes.".concat(itemType, ".description"), replacements);
+         var _drawNode;

 
 

-           if (detail === unknown) {
-             detail = _t.html("QA.keepRight.errorTypes.".concat(parentIssueType, ".description"), replacements);
-           }
+         var _didResolveTempEdit = false;

 
 

-           return detail;
+         function createDrawNode(loc) {
+           // don't make the draw node until we actually need it
+           _drawNode = osmNode({
+             loc: loc
+           });
+           context.pauseChangeDispatch();
+           context.replace(function actionAddDrawNode(graph) {
+             // add the draw node to the graph and insert it into the way
+             var way = graph.entity(wayID);
+             return graph.replace(_drawNode).replace(way.addNode(_drawNode.id, _nodeIndex));
+           }, _annotation);
+           context.resumeChangeDispatch();
+           setActiveElements();

          }
 
          }
 

-         function keepRightDetails(selection) {
-           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           details.exit().remove();
-           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // description
+         function removeDrawNode() {
+           context.pauseChangeDispatch();
+           context.replace(function actionDeleteDrawNode(graph) {
+             var way = graph.entity(wayID);
+             return graph.replace(way.removeNode(_drawNode.id)).remove(_drawNode);
+           }, _annotation);
+           _drawNode = undefined;
+           context.resumeChangeDispatch();
+         }

 
 

-           var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-           descriptionEnter.append('h4').html(_t.html('QA.keepRight.detail_description'));
-           descriptionEnter.append('div').attr('class', 'qa-details-description-text').html(issueDetail); // If there are entity links in the error message..
+         function keydown(d3_event) {
+           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             if (context.surface().classed('nope')) {
+               context.surface().classed('nope-suppressed', true);
+             }

 
 

-           var relatedEntities = [];
-           descriptionEnter.selectAll('.error_entity_link, .error_object_link').attr('href', '#').each(function () {
-             var link = select(this);
-             var isObjectLink = link.classed('error_object_link');
-             var entityID = isObjectLink ? utilEntityRoot(_qaItem.objectType) + _qaItem.objectId : this.textContent;
-             var entity = context.hasEntity(entityID);
-             relatedEntities.push(entityID); // Add click handler
+             context.surface().classed('nope', false).classed('nope-disabled', true);
+           }
+         }

 
 

-             link.on('mouseenter', function () {
-               utilHighlightEntities([entityID], true, context);
-             }).on('mouseleave', function () {
-               utilHighlightEntities([entityID], false, context);
-             }).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               utilHighlightEntities([entityID], false, context);
-               var osmlayer = context.layers().layer('osm');
+         function keyup(d3_event) {
+           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
+             if (context.surface().classed('nope-suppressed')) {
+               context.surface().classed('nope', true);
+             }

 
 

-               if (!osmlayer.enabled()) {
-                 osmlayer.enabled(true);
-               }
+             context.surface().classed('nope-suppressed', false).classed('nope-disabled', false);
+           }
+         }

 
 

-               context.map().centerZoomEase(_qaItem.loc, 20);
+         function allowsVertex(d) {
+           return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
+         } // related code
+         // - `mode/drag_node.js`     `doMove()`
+         // - `behavior/draw.js`      `click()`
+         // - `behavior/draw_way.js`  `move()`

 
 

-               if (entity) {
-                 context.enter(modeSelect(context, [entityID]));
-               } else {
-                 context.loadEntity(entityID, function () {
-                   context.enter(modeSelect(context, [entityID]));
-                 });
-               }
-             }); // Replace with friendly name if possible
-             // (The entity may not yet be loaded into the graph)

 
 

-             if (entity) {
-               var name = utilDisplayName(entity); // try to use common name
+         function move(d3_event, datum) {
+           var loc = context.map().mouseCoordinates();
+           if (!_drawNode) createDrawNode(loc);
+           context.surface().classed('nope-disabled', d3_event.altKey);
+           var targetLoc = datum && datum.properties && datum.properties.entity && allowsVertex(datum.properties.entity) && datum.properties.entity.loc;
+           var targetNodes = datum && datum.properties && datum.properties.nodes;

 
 

-               if (!name && !isObjectLink) {
-                 var preset = _mainPresetIndex.match(entity, context.graph());
-                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
-               }
+           if (targetLoc) {
+             // snap to node/vertex - a point target with `.loc`
+             loc = targetLoc;
+           } else if (targetNodes) {
+             // snap to way - a line target with `.nodes`
+             var choice = geoChooseEdge(targetNodes, context.map().mouse(), context.projection, _drawNode.id);

 
 

-               if (name) {
-                 this.innerText = name;
-               }
+             if (choice) {
+               loc = choice.loc;

              }
              }

-           }); // Don't hide entities related to this issue - #5880
+           }

 
 

-           context.features().forceVisible(relatedEntities);
-           context.map().pan([0, 0]); // trigger a redraw
-         }
+           context.replace(actionMoveNode(_drawNode.id, loc), _annotation);
+           _drawNode = context.entity(_drawNode.id);
+           checkGeometry(true
+           /* includeDrawNode */
+           );
+         } // Check whether this edit causes the geometry to break.
+         // If so, class the surface with a nope cursor.
+         // `includeDrawNode` - Only check the relevant line segments if finishing drawing

 
 

-         keepRightDetails.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return keepRightDetails;
-         };

 
 

-         return keepRightDetails;
-       }
+         function checkGeometry(includeDrawNode) {
+           var nopeDisabled = context.surface().classed('nope-disabled');
+           var isInvalid = isInvalidGeometry(includeDrawNode);

 
 

-       function uiKeepRightHeader() {
-         var _qaItem;
+           if (nopeDisabled) {
+             context.surface().classed('nope', false).classed('nope-suppressed', isInvalid);
+           } else {
+             context.surface().classed('nope', isInvalid).classed('nope-suppressed', false);
+           }
+         }

 
 

-         function issueTitle(d) {
-           var itemType = d.itemType,
-               parentIssueType = d.parentIssueType;
-           var unknown = _t.html('inspector.unknown');
-           var replacements = d.replacements || {};
-           replacements["default"] = unknown; // special key `default` works as a fallback string
+         function isInvalidGeometry(includeDrawNode) {
+           var testNode = _drawNode; // we only need to test the single way we're drawing

 
 

-           var title = _t.html("QA.keepRight.errorTypes.".concat(itemType, ".title"), replacements);
+           var parentWay = context.graph().entity(wayID);
+           var nodes = context.graph().childNodes(parentWay).slice(); // shallow copy

 
 

-           if (title === unknown) {
-             title = _t.html("QA.keepRight.errorTypes.".concat(parentIssueType, ".title"), replacements);
+           if (includeDrawNode) {
+             if (parentWay.isClosed()) {
+               // don't test the last segment for closed ways - #4655
+               // (still test the first segment)
+               nodes.pop();
+             }
+           } else {
+             // discount the draw node
+             if (parentWay.isClosed()) {
+               if (nodes.length < 3) return false;
+               if (_drawNode) nodes.splice(-2, 1);
+               testNode = nodes[nodes.length - 2];
+             } else {
+               // there's nothing we need to test if we ignore the draw node on open ways
+               return false;
+             }

            }
 
            }
 

-           return title;
+           return testNode && geoHasSelfIntersections(nodes, testNode.id);

          }
 
          }
 

-         function keepRightHeader(selection) {
-           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           header.exit().remove();
-           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
-           var iconEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
-             return d.id < 0;
-           });
-           iconEnter.append('div').attr('class', function (d) {
-             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.parentIssueType);
-           }).call(svgIcon('#iD-icon-bolt', 'qaItem-fill'));
-           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);
-         }
+         function undone() {
+           // undoing removed the temp edit
+           _didResolveTempEdit = true;
+           context.pauseChangeDispatch();
+           var nextMode;

 
 

-         keepRightHeader.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return keepRightHeader;
-         };
+           if (context.graph() === startGraph) {
+             // We've undone back to the initial state before we started drawing.
+             // Just exit the draw mode without undoing whatever we did before
+             // we entered the draw mode.
+             nextMode = modeSelect(context, [wayID]);
+           } else {
+             // The `undo` only removed the temporary edit, so here we have to
+             // manually undo to actually remove the last node we added. We can't
+             // use the `undo` function since the initial "add" graph doesn't have
+             // an annotation and so cannot be undone to.
+             context.pop(1); // continue drawing

 
 

-         return keepRightHeader;
-       }
+             nextMode = mode;
+           } // clear the redo stack by adding and removing a blank edit

 
 

-       function uiViewOnKeepRight() {
-         var _qaItem;

 
 

-         function viewOnKeepRight(selection) {
-           var url;
+           context.perform(actionNoop());
+           context.pop(1);
+           context.resumeChangeDispatch();
+           context.enter(nextMode);
+         }

 
 

-           if (services.keepRight && _qaItem instanceof QAItem) {
-             url = services.keepRight.issueURL(_qaItem);
+         function setActiveElements() {
+           if (!_drawNode) return;
+           context.surface().selectAll('.' + _drawNode.id).classed('active', true);
+         }
+
+         function resetToStartGraph() {
+           while (context.graph() !== startGraph) {
+             context.pop();

            }
            }

+         }

 
 

-           var link = selection.selectAll('.view-on-keepRight').data(url ? [url] : []); // exit
+         var drawWay = function drawWay(surface) {
+           _drawNode = undefined;
+           _didResolveTempEdit = false;
+           _origWay = context.entity(wayID);

 
 

-           link.exit().remove(); // enter
+           if (typeof _nodeIndex === 'number') {
+             _headNodeID = _origWay.nodes[_nodeIndex];
+           } else if (_origWay.isClosed()) {
+             _headNodeID = _origWay.nodes[_origWay.nodes.length - 2];
+           } else {
+             _headNodeID = _origWay.nodes[_origWay.nodes.length - 1];
+           }

 
 

-           var linkEnter = link.enter().append('a').attr('class', 'view-on-keepRight').attr('target', '_blank').attr('rel', 'noopener') // security measure
-           .attr('href', function (d) {
-             return d;
-           }).call(svgIcon('#iD-icon-out-link', 'inline'));
-           linkEnter.append('span').html(_t.html('inspector.view_on_keepRight'));
-         }
+           _wayGeometry = _origWay.geometry(context.graph());
+           _annotation = _t((_origWay.nodes.length === (_origWay.isClosed() ? 2 : 1) ? 'operations.start.annotation.' : 'operations.continue.annotation.') + _wayGeometry);
+           _pointerHasMoved = false; // Push an annotated state for undo to return back to.
+           // We must make sure to replace or remove it later.

 
 

-         viewOnKeepRight.what = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return viewOnKeepRight;
+           context.pauseChangeDispatch();
+           context.perform(actionNoop(), _annotation);
+           context.resumeChangeDispatch();
+           behavior.hover().initialNodeID(_headNodeID);
+           behavior.on('move', function () {
+             _pointerHasMoved = true;
+             move.apply(this, arguments);
+           }).on('down', function () {
+             move.apply(this, arguments);
+           }).on('downcancel', function () {
+             if (_drawNode) removeDrawNode();
+           }).on('click', drawWay.add).on('clickWay', drawWay.addWay).on('clickNode', drawWay.addNode).on('undo', context.undo).on('cancel', drawWay.cancel).on('finish', drawWay.finish);
+           select(window).on('keydown.drawWay', keydown).on('keyup.drawWay', keyup);
+           context.map().dblclickZoomEnable(false).on('drawn.draw', setActiveElements);
+           setActiveElements();
+           surface.call(behavior);
+           context.history().on('undone.draw', undone);

          };
 
          };
 

-         return viewOnKeepRight;
-       }
-
-       function uiKeepRightEditor(context) {
-         var dispatch$1 = dispatch('change');
-         var qaDetails = uiKeepRightDetails(context);
-         var qaHeader = uiKeepRightHeader();
+         drawWay.off = function (surface) {
+           if (!_didResolveTempEdit) {
+             // Drawing was interrupted unexpectedly.
+             // This can happen if the user changes modes,
+             // clicks geolocate button, a hashchange event occurs, etc.
+             context.pauseChangeDispatch();
+             resetToStartGraph();
+             context.resumeChangeDispatch();
+           }

 
 

-         var _qaItem;
+           _drawNode = undefined;
+           _nodeIndex = undefined;
+           context.map().on('drawn.draw', null);
+           surface.call(behavior.off).selectAll('.active').classed('active', false);
+           surface.classed('nope', false).classed('nope-suppressed', false).classed('nope-disabled', false);
+           select(window).on('keydown.drawWay', null).on('keyup.drawWay', null);
+           context.history().on('undone.draw', null);
+         };

 
 

-         function keepRightEditor(selection) {
-           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             return context.enter(modeBrowse(context));
-           }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('QA.keepRight.title'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body);
-           var editor = body.selectAll('.qa-editor').data([0]);
-           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(keepRightSaveSection);
-           var footer = selection.selectAll('.footer').data([0]);
-           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnKeepRight().what(_qaItem));
-         }
+         function attemptAdd(d, loc, doAdd) {
+           if (_drawNode) {
+             // move the node to the final loc in case move wasn't called
+             // consistently (e.g. on touch devices)
+             context.replace(actionMoveNode(_drawNode.id, loc), _annotation);
+             _drawNode = context.entity(_drawNode.id);
+           } else {
+             createDrawNode(loc);
+           }

 
 

-         function keepRightSaveSection(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
+           checkGeometry(true
+           /* includeDrawNode */
+           );

 
 

-           var isShown = _qaItem && (isSelected || _qaItem.newComment || _qaItem.comment);
-           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           }); // exit
+           if (d && d.properties && d.properties.nope || context.surface().classed('nope')) {
+             if (!_pointerHasMoved) {
+               // prevent the temporary draw node from appearing on touch devices
+               removeDrawNode();
+             }

 
 

-           saveSection.exit().remove(); // enter
+             dispatch.call('rejectedSelfIntersection', this);
+             return; // can't click here
+           }

 
 

-           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
-           saveSectionEnter.append('h4').attr('class', '.qa-save-header').html(_t.html('QA.keepRight.comment'));
-           saveSectionEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('QA.keepRight.comment_placeholder')).attr('maxlength', 1000).property('value', function (d) {
-             return d.newComment || d.comment;
-           }).call(utilNoAuto).on('input', changeInput).on('blur', changeInput); // update
+           context.pauseChangeDispatch();
+           doAdd(); // we just replaced the temporary edit with the real one

 
 

-           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+           _didResolveTempEdit = true;
+           context.resumeChangeDispatch();
+           context.enter(mode);
+         } // Accept the current position of the drawing node

 
 

-           function changeInput() {
-             var input = select(this);
-             var val = input.property('value').trim();

 
 

-             if (val === _qaItem.comment) {
-               val = undefined;
-             } // store the unsaved comment with the issue itself
+         drawWay.add = function (loc, d) {
+           attemptAdd(d, loc, function () {// don't need to do anything extra
+           });
+         }; // Connect the way to an existing way

 
 
 
 

-             _qaItem = _qaItem.update({
-               newComment: val
-             });
-             var qaService = services.keepRight;
+         drawWay.addWay = function (loc, edge, d) {
+           attemptAdd(d, loc, function () {
+             context.replace(actionAddMidpoint({
+               loc: loc,
+               edge: edge
+             }, _drawNode), _annotation);
+           });
+         }; // Connect the way to an existing node

 
 

-             if (qaService) {
-               qaService.replaceItem(_qaItem); // update keepright cache
-             }

 
 

-             saveSection.call(qaSaveButtons);
+         drawWay.addNode = function (node, d) {
+           // finish drawing if the mapper targets the prior node
+           if (node.id === _headNodeID || // or the first node when drawing an area
+           _origWay.isClosed() && node.id === _origWay.first()) {
+             drawWay.finish();
+             return;

            }
            }

-         }
-
-         function qaSaveButtons(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+           attemptAdd(d, node.loc, function () {
+             context.replace(function actionReplaceDrawNode(graph) {
+               // remove the temporary draw node and insert the existing node
+               // at the same index
+               graph = graph.replace(graph.entity(wayID).removeNode(_drawNode.id)).remove(_drawNode);
+               return graph.replace(graph.entity(wayID).addNode(node.id, _nodeIndex));
+             }, _annotation);
+           });
+         };
+         /**
+          * @param {(typeof osmWay)[]} ways
+          * @returns {"line" | "area" | "generic"}
+          */

 
 

-           buttonSection.exit().remove(); // enter

 
 

-           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
-           buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('QA.keepRight.save_comment'));
-           buttonEnter.append('button').attr('class', 'button close-button action');
-           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update
+         function getFeatureType(ways) {
+           if (ways.every(function (way) {
+             return way.isClosed();
+           })) return 'area';
+           if (ways.every(function (way) {
+             return !way.isClosed();
+           })) return 'line';
+           return 'generic';
+         }
+         /** see PR #8671 */

 
 

-           buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.select('.comment-button') // select and propagate data
-           .attr('disabled', function (d) {
-             return d.newComment ? null : true;
-           }).on('click.comment', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641

 
 

-             var qaService = services.keepRight;
+         function followMode() {
+           if (_didResolveTempEdit) return;

 
 

-             if (qaService) {
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
-             }
-           });
-           buttonSection.select('.close-button') // select and propagate data
-           .html(function (d) {
-             var andComment = d.newComment ? '_comment' : '';
-             return _t.html("QA.keepRight.close".concat(andComment));
-           }).on('click.close', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+           try {
+             // get the last 2 added nodes.
+             // check if they are both part of only oneway (the same one)
+             // check if the ways that they're part of are the same way
+             // find index of the last two nodes, to determine the direction to travel around the existing way
+             // add the next node to the way we are drawing
+             // if we're drawing an area, the first node = last node.
+             var isDrawingArea = _origWay.nodes[0] === _origWay.nodes.slice(-1)[0];

 
 

-             var qaService = services.keepRight;
+             var _origWay$nodes$slice = _origWay.nodes.slice(isDrawingArea ? -3 : -2),
+                 _origWay$nodes$slice2 = _slicedToArray(_origWay$nodes$slice, 2),
+                 secondLastNodeId = _origWay$nodes$slice2[0],
+                 lastNodeId = _origWay$nodes$slice2[1]; // Unlike startGraph, the full history graph may contain unsaved vertices to follow.
+             // https://github.com/openstreetmap/iD/issues/8749

 
 

-             if (qaService) {
-               d.newStatus = 'ignore_t'; // ignore temporarily (item fixed)

 
 

-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
-             }
-           });
-           buttonSection.select('.ignore-button') // select and propagate data
-           .html(function (d) {
-             var andComment = d.newComment ? '_comment' : '';
-             return _t.html("QA.keepRight.ignore".concat(andComment));
-           }).on('click.ignore', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+             var historyGraph = context.history().graph();

 
 

-             var qaService = services.keepRight;
+             if (!lastNodeId || !secondLastNodeId || !historyGraph.hasEntity(lastNodeId) || !historyGraph.hasEntity(secondLastNodeId)) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('operations.follow.error.needs_more_initial_nodes'))();
+               return;
+             } // If the way has looped over itself, follow some other way.

 
 

-             if (qaService) {
-               d.newStatus = 'ignore'; // ignore permanently (false positive)

 
 

-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
-             }
-           });
-         } // NOTE: Don't change method name until UI v3 is merged
+             var lastNodesParents = historyGraph.parentWays(historyGraph.entity(lastNodeId)).filter(function (w) {
+               return w.id !== wayID;
+             });
+             var secondLastNodesParents = historyGraph.parentWays(historyGraph.entity(secondLastNodeId)).filter(function (w) {
+               return w.id !== wayID;
+             });
+             var featureType = getFeatureType(lastNodesParents);

 
 

+             if (lastNodesParents.length !== 1 || secondLastNodesParents.length === 0) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t("operations.follow.error.intersection_of_multiple_ways.".concat(featureType)))();
+               return;
+             } // Check if the last node's parent is also the parent of the second last node.
+             // The last node must only have one parent, but the second last node can have
+             // multiple parents.

 
 

-         keepRightEditor.error = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return keepRightEditor;
-         };

 
 

-         return utilRebind(keepRightEditor, dispatch$1, 'on');
-       }
+             if (!secondLastNodesParents.some(function (n) {
+               return n.id === lastNodesParents[0].id;
+             })) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t("operations.follow.error.intersection_of_different_ways.".concat(featureType)))();
+               return;
+             }

 
 

-       function uiOsmoseDetails(context) {
-         var _qaItem;
+             var way = lastNodesParents[0];
+             var indexOfLast = way.nodes.indexOf(lastNodeId);
+             var indexOfSecondLast = way.nodes.indexOf(secondLastNodeId); // for a closed way, the first/last node is the same so it appears twice in the array,
+             // but indexOf always finds the first occurrence. This is only an issue when following a way
+             // in descending order

 
 

-         function issueString(d, type) {
-           if (!d) return ''; // Issue strings are cached from Osmose API
+             var isDescendingPastZero = indexOfLast === way.nodes.length - 2 && indexOfSecondLast === 0;
+             var nextNodeIndex = indexOfLast + (indexOfLast > indexOfSecondLast && !isDescendingPastZero ? 1 : -1); // if we're following a closed way and we pass the first/last node, the  next index will be -1

 
 

-           var s = services.osmose.getStrings(d.itemType);
-           return type in s ? s[type] : '';
+             if (nextNodeIndex === -1) nextNodeIndex = indexOfSecondLast === 1 ? way.nodes.length - 2 : 1;
+             var nextNode = historyGraph.entity(way.nodes[nextNodeIndex]);
+             drawWay.addNode(nextNode, {
+               geometry: {
+                 type: 'Point',
+                 coordinates: nextNode.loc
+               },
+               id: nextNode.id,
+               properties: {
+                 target: true,
+                 entity: nextNode
+               }
+             });
+           } catch (ex) {
+             context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t('operations.follow.error.unknown'))();
+           }

          }
 
          }
 

-         function osmoseDetails(selection) {
-           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           details.exit().remove();
-           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // Description
+         keybinding.on(_t('operations.follow.key'), followMode);
+         select(document).call(keybinding); // Finish the draw operation, removing the temporary edit.
+         // If the way has enough nodes to be valid, it's selected.
+         // Otherwise, delete everything and return to browse mode.

 
 

-           if (issueString(_qaItem, 'detail')) {
-             var div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-             div.append('h4').html(_t.html('QA.keepRight.detail_description'));
-             div.append('p').attr('class', 'qa-details-description-text').html(function (d) {
-               return issueString(d, 'detail');
-             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
-           } // Elements (populated later as data is requested)
+         drawWay.finish = function () {
+           checkGeometry(false
+           /* includeDrawNode */
+           );

 
 

+           if (context.surface().classed('nope')) {
+             dispatch.call('rejectedSelfIntersection', this);
+             return; // can't click here
+           }

 
 

-           var detailsDiv = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-           var elemsDiv = detailsEnter.append('div').attr('class', 'qa-details-subsection'); // Suggested Fix (mustn't exist for every issue type)
+           context.pauseChangeDispatch(); // remove the temporary edit

 
 

-           if (issueString(_qaItem, 'fix')) {
-             var _div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+           context.pop(1);
+           _didResolveTempEdit = true;
+           context.resumeChangeDispatch();
+           var way = context.hasEntity(wayID);
+
+           if (!way || way.isDegenerate()) {
+             drawWay.cancel();
+             return;
+           }

 
 

-             _div.append('h4').html(_t.html('QA.osmose.fix_title'));
+           window.setTimeout(function () {
+             context.map().dblclickZoomEnable(true);
+           }, 1000);
+           var isNewFeature = !mode.isContinuing;
+           context.enter(modeSelect(context, [wayID]).newFeature(isNewFeature));
+         }; // Cancel the draw operation, delete everything, and return to browse mode.

 
 

-             _div.append('p').html(function (d) {
-               return issueString(d, 'fix');
-             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
-           } // Common Pitfalls (mustn't exist for every issue type)

 
 

+         drawWay.cancel = function () {
+           context.pauseChangeDispatch();
+           resetToStartGraph();
+           context.resumeChangeDispatch();
+           window.setTimeout(function () {
+             context.map().dblclickZoomEnable(true);
+           }, 1000);
+           context.surface().classed('nope', false).classed('nope-disabled', false).classed('nope-suppressed', false);
+           context.enter(modeBrowse(context));
+         };

 
 

-           if (issueString(_qaItem, 'trap')) {
-             var _div2 = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+         drawWay.nodeIndex = function (val) {
+           if (!arguments.length) return _nodeIndex;
+           _nodeIndex = val;
+           return drawWay;
+         };

 
 

-             _div2.append('h4').html(_t.html('QA.osmose.trap_title'));
+         drawWay.activeID = function () {
+           if (!arguments.length) return _drawNode && _drawNode.id; // no assign

 
 

-             _div2.append('p').html(function (d) {
-               return issueString(d, 'trap');
-             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
-           } // Save current item to check if UI changed by time request resolves
+           return drawWay;
+         };

 
 

+         return utilRebind(drawWay, dispatch, 'on');
+       }

 
 

-           var thisItem = _qaItem;
-           services.osmose.loadIssueDetail(_qaItem).then(function (d) {
-             // No details to add if there are no associated issue elements
-             if (!d.elems || d.elems.length === 0) return; // Do nothing if UI has moved on by the time this resolves
+       function modeDrawLine(context, wayID, startGraph, button, affix, continuing) {
+         var mode = {
+           button: button,
+           id: 'draw-line'
+         };
+         var behavior = behaviorDrawWay(context, wayID, mode, startGraph).on('rejectedSelfIntersection.modeDrawLine', function () {
+           context.ui().flash.iconName('#iD-icon-no').label(_t('self_intersection.error.lines'))();
+         });
+         mode.wayID = wayID;
+         mode.isContinuing = continuing;

 
 

-             if (context.selectedErrorID() !== thisItem.id && context.container().selectAll(".qaItem.osmose.hover.itemId-".concat(thisItem.id)).empty()) return; // Things like keys and values are dynamically added to a subtitle string
+         mode.enter = function () {
+           behavior.nodeIndex(affix === 'prefix' ? 0 : undefined);
+           context.install(behavior);
+         };

 
 

-             if (d.detail) {
-               detailsDiv.append('h4').html(_t.html('QA.osmose.detail_title'));
-               detailsDiv.append('p').html(function (d) {
-                 return d.detail;
-               }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
-             } // Create list of linked issue elements
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };

 
 

+         mode.selectedIDs = function () {
+           return [wayID];
+         };

 
 

-             elemsDiv.append('h4').html(_t.html('QA.osmose.elems_title'));
-             elemsDiv.append('ul').selectAll('li').data(d.elems).enter().append('li').append('a').attr('href', '#').attr('class', 'error_entity_link').html(function (d) {
-               return d;
-             }).each(function () {
-               var link = select(this);
-               var entityID = this.textContent;
-               var entity = context.hasEntity(entityID); // Add click handler
+         mode.activeID = function () {
+           return behavior && behavior.activeID() || [];
+         };

 
 

-               link.on('mouseenter', function () {
-                 utilHighlightEntities([entityID], true, context);
-               }).on('mouseleave', function () {
-                 utilHighlightEntities([entityID], false, context);
-               }).on('click', function (d3_event) {
-                 d3_event.preventDefault();
-                 utilHighlightEntities([entityID], false, context);
-                 var osmlayer = context.layers().layer('osm');
+         return mode;
+       }

 
 

-                 if (!osmlayer.enabled()) {
-                   osmlayer.enabled(true);
-                 }
+       function validationDisconnectedWay() {
+         var type = 'disconnected_way';

 
 

-                 context.map().centerZoom(d.loc, 20);
+         function isTaggedAsHighway(entity) {
+           return osmRoutableHighwayTagValues[entity.tags.highway];
+         }

 
 

-                 if (entity) {
-                   context.enter(modeSelect(context, [entityID]));
-                 } else {
-                   context.loadEntity(entityID, function () {
-                     context.enter(modeSelect(context, [entityID]));
-                   });
-                 }
-               }); // Replace with friendly name if possible
-               // (The entity may not yet be loaded into the graph)
+         var validation = function checkDisconnectedWay(entity, graph) {
+           var routingIslandWays = routingIslandForEntity(entity);
+           if (!routingIslandWays) return [];
+           return [new validationIssue({
+             type: type,
+             subtype: 'highway',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = this.entityIds.length && context.hasEntity(this.entityIds[0]);
+               var label = entity && utilDisplayLabel(entity, context.graph());
+               return _t.html('issues.disconnected_way.routable.message', {
+                 count: this.entityIds.length,
+                 highway: label
+               });
+             },
+             reference: showReference,
+             entityIds: Array.from(routingIslandWays).map(function (way) {
+               return way.id;
+             }),
+             dynamicFixes: makeFixes
+           })];

 
 

-               if (entity) {
-                 var name = utilDisplayName(entity); // try to use common name
+           function makeFixes(context) {
+             var fixes = [];
+             var singleEntity = this.entityIds.length === 1 && context.hasEntity(this.entityIds[0]);

 
 

-                 if (!name) {
-                   var preset = _mainPresetIndex.match(entity, context.graph());
-                   name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
-                 }
+             if (singleEntity) {
+               if (singleEntity.type === 'way' && !singleEntity.isClosed()) {
+                 var textDirection = _mainLocalizer.textDirection();
+                 var startFix = makeContinueDrawingFixIfAllowed(textDirection, singleEntity.first(), 'start');
+                 if (startFix) fixes.push(startFix);
+                 var endFix = makeContinueDrawingFixIfAllowed(textDirection, singleEntity.last(), 'end');
+                 if (endFix) fixes.push(endFix);
+               }

 
 

-                 if (name) {
-                   this.innerText = name;
-                 }
+               if (!fixes.length) {
+                 fixes.push(new validationIssueFix({
+                   title: _t.html('issues.fix.connect_feature.title')
+                 }));

                }
                }

-             }); // Don't hide entities related to this issue - #5880

 
 

-             context.features().forceVisible(d.elems);
-             context.map().pan([0, 0]); // trigger a redraw
-           })["catch"](function (err) {
-             console.log(err); // eslint-disable-line no-console
-           });
-         }
+               fixes.push(new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.delete_feature.title'),
+                 entityIds: [singleEntity.id],
+                 onClick: function onClick(context) {
+                   var id = this.issue.entityIds[0];
+                   var operation = operationDelete(context, [id]);

 
 

-         osmoseDetails.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return osmoseDetails;
-         };
+                   if (!operation.disabled()) {
+                     operation();
+                   }
+                 }
+               }));
+             } else {
+               fixes.push(new validationIssueFix({
+                 title: _t.html('issues.fix.connect_features.title')
+               }));
+             }

 
 

-         return osmoseDetails;
-       }
+             return fixes;
+           }

 
 

-       function uiOsmoseHeader() {
-         var _qaItem;
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.disconnected_way.routable.reference'));
+           }

 
 

-         function issueTitle(d) {
-           var unknown = _t('inspector.unknown');
-           if (!d) return unknown; // Issue titles supplied by Osmose
+           function routingIslandForEntity(entity) {
+             var routingIsland = new Set(); // the interconnected routable features

 
 

-           var s = services.osmose.getStrings(d.itemType);
-           return 'title' in s ? s.title : unknown;
-         }
+             var waysToCheck = []; // the queue of remaining routable ways to traverse

 
 

-         function osmoseHeader(selection) {
-           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           });
-           header.exit().remove();
-           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
-           var svgEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
-             return d.id < 0;
-           }).append('svg').attr('width', '20px').attr('height', '30px').attr('viewbox', '0 0 20 30').attr('class', function (d) {
-             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
-           });
-           svgEnter.append('polygon').attr('fill', function (d) {
-             return services.osmose.getColor(d.item);
-           }).attr('class', 'qaItem-fill').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
-           svgEnter.append('use').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('transform', 'translate(3.5, 5)').attr('xlink:href', function (d) {
-             var picon = d.icon;
+             function queueParentWays(node) {
+               graph.parentWays(node).forEach(function (parentWay) {
+                 if (!routingIsland.has(parentWay) && // only check each feature once
+                 isRoutableWay(parentWay, false)) {
+                   // only check routable features
+                   routingIsland.add(parentWay);
+                   waysToCheck.push(parentWay);
+                 }
+               });
+             }

 
 

-             if (!picon) {
-               return '';
+             if (entity.type === 'way' && isRoutableWay(entity, true)) {
+               routingIsland.add(entity);
+               waysToCheck.push(entity);
+             } else if (entity.type === 'node' && isRoutableNode(entity)) {
+               routingIsland.add(entity);
+               queueParentWays(entity);

              } else {
              } else {

-               var isMaki = /^maki-/.test(picon);
-               return "#".concat(picon).concat(isMaki ? '-11' : '');
+               // this feature isn't routable, cannot be a routing island
+               return null;

              }
              }

-           });
-           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);
-         }

 
 

-         osmoseHeader.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return osmoseHeader;
-         };
+             while (waysToCheck.length) {
+               var wayToCheck = waysToCheck.pop();
+               var childNodes = graph.childNodes(wayToCheck);

 
 

-         return osmoseHeader;
-       }
+               for (var i in childNodes) {
+                 var vertex = childNodes[i];

 
 

-       function uiViewOnOsmose() {
-         var _qaItem;
+                 if (isConnectedVertex(vertex)) {
+                   // found a link to the wider network, not a routing island
+                   return null;
+                 }

 
 

-         function viewOnOsmose(selection) {
-           var url;
+                 if (isRoutableNode(vertex)) {
+                   routingIsland.add(vertex);
+                 }

 
 

-           if (services.osmose && _qaItem instanceof QAItem) {
-             url = services.osmose.itemURL(_qaItem);
-           }
+                 queueParentWays(vertex);
+               }
+             } // no network link found, this is a routing island, return its members

 
 

-           var link = selection.selectAll('.view-on-osmose').data(url ? [url] : []); // exit

 
 

-           link.exit().remove(); // enter
+             return routingIsland;
+           }

 
 

-           var linkEnter = link.enter().append('a').attr('class', 'view-on-osmose').attr('target', '_blank').attr('rel', 'noopener') // security measure
-           .attr('href', function (d) {
-             return d;
-           }).call(svgIcon('#iD-icon-out-link', 'inline'));
-           linkEnter.append('span').html(_t.html('inspector.view_on_osmose'));
-         }
+           function isConnectedVertex(vertex) {
+             // assume ways overlapping unloaded tiles are connected to the wider road network  - #5938
+             var osm = services.osm;
+             if (osm && !osm.isDataLoaded(vertex.loc)) return true; // entrances are considered connected

 
 

-         viewOnOsmose.what = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return viewOnOsmose;
-         };
+             if (vertex.tags.entrance && vertex.tags.entrance !== 'no') return true;
+             if (vertex.tags.amenity === 'parking_entrance') return true;
+             return false;
+           }

 
 

-         return viewOnOsmose;
-       }
+           function isRoutableNode(node) {
+             // treat elevators as distinct features in the highway network
+             if (node.tags.highway === 'elevator') return true;
+             return false;
+           }

 
 

-       function uiOsmoseEditor(context) {
-         var dispatch$1 = dispatch('change');
-         var qaDetails = uiOsmoseDetails(context);
-         var qaHeader = uiOsmoseHeader();
+           function isRoutableWay(way, ignoreInnerWays) {
+             if (isTaggedAsHighway(way) || way.tags.route === 'ferry') return true;
+             return graph.parentRelations(way).some(function (parentRelation) {
+               if (parentRelation.tags.type === 'route' && parentRelation.tags.route === 'ferry') return true;
+               if (parentRelation.isMultipolygon() && isTaggedAsHighway(parentRelation) && (!ignoreInnerWays || parentRelation.memberById(way.id).role !== 'inner')) return true;
+               return false;
+             });
+           }

 
 

-         var _qaItem;
+           function makeContinueDrawingFixIfAllowed(textDirection, vertexID, whichEnd) {
+             var vertex = graph.hasEntity(vertexID);
+             if (!vertex || vertex.tags.noexit === 'yes') return null;
+             var useLeftContinue = whichEnd === 'start' && textDirection === 'ltr' || whichEnd === 'end' && textDirection === 'rtl';
+             return new validationIssueFix({
+               icon: 'iD-operation-continue' + (useLeftContinue ? '-left' : ''),
+               title: _t.html('issues.fix.continue_from_' + whichEnd + '.title'),
+               entityIds: [vertexID],
+               onClick: function onClick(context) {
+                 var wayId = this.issue.entityIds[0];
+                 var way = context.hasEntity(wayId);
+                 var vertexId = this.entityIds[0];
+                 var vertex = context.hasEntity(vertexId);
+                 if (!way || !vertex) return; // make sure the vertex is actually visible and editable

 
 

-         function osmoseEditor(selection) {
-           var header = selection.selectAll('.header').data([0]);
-           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             return context.enter(modeBrowse(context));
-           }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('QA.osmose.title'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body);
-           var editor = body.selectAll('.qa-editor').data([0]);
-           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(osmoseSaveSection);
-           var footer = selection.selectAll('.footer').data([0]);
-           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnOsmose().what(_qaItem));
-         }
+                 var map = context.map();

 
 

-         function osmoseSaveSection(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
+                 if (!context.editable() || !map.trimmedExtent().contains(vertex.loc)) {
+                   map.zoomToEase(vertex);
+                 }

 
 

-           var isShown = _qaItem && isSelected;
-           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
-             return "".concat(d.id, "-").concat(d.status || 0);
-           }); // exit
+                 context.enter(modeDrawLine(context, wayId, context.graph(), 'line', way.affix(vertexId), true));
+               }
+             });
+           }
+         };

 
 

-           saveSection.exit().remove(); // enter
+         validation.type = type;
+         return validation;
+       }

 
 

-           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf'); // update
+       function validationFormatting() {
+         var type = 'invalid_format';

 
 

-           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
-         }
+         var validation = function validation(entity) {
+           var issues = [];

 
 

-         function qaSaveButtons(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
+           function isValidEmail(email) {
+             // Emails in OSM are going to be official so they should be pretty simple
+             // Using negated lists to better support all possible unicode characters (#6494)
+             var valid_email = /^[^\(\)\\,":;<>@\[\]]+@[^\(\)\\,":;<>@\[\]\.]+(?:\.[a-z0-9-]+)*$/i; // An empty value is also acceptable

 
 

-           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+             return !email || valid_email.test(email);
+           }
+           /*
+           function isSchemePresent(url) {
+               var valid_scheme = /^https?:\/\//i;
+               return (!url || valid_scheme.test(url));
+           }
+           */

 
 

-           buttonSection.exit().remove(); // enter

 
 

-           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
-           buttonEnter.append('button').attr('class', 'button close-button action');
-           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update
+           function showReferenceEmail(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.invalid_format.email.reference'));
+           }
+           /*
+           function showReferenceWebsite(selection) {
+               selection.selectAll('.issue-reference')
+                   .data([0])
+                   .enter()
+                   .append('div')
+                   .attr('class', 'issue-reference')
+                   .html(t.html('issues.invalid_format.website.reference'));
+           }
+            if (entity.tags.website) {
+               // Multiple websites are possible
+               // If ever we support ES6, arrow functions make this nicer
+               var websites = entity.tags.website
+                   .split(';')
+                   .map(function(s) { return s.trim(); })
+                   .filter(function(x) { return !isSchemePresent(x); });
+                if (websites.length) {
+                   issues.push(new validationIssue({
+                       type: type,
+                       subtype: 'website',
+                       severity: 'warning',
+                       message: function(context) {
+                           var entity = context.hasEntity(this.entityIds[0]);
+                           return entity ? t.html('issues.invalid_format.website.message' + this.data,
+                               { feature: utilDisplayLabel(entity, context.graph()), site: websites.join(', ') }) : '';
+                       },
+                       reference: showReferenceWebsite,
+                       entityIds: [entity.id],
+                       hash: websites.join(),
+                       data: (websites.length > 1) ? '_multi' : ''
+                   }));
+               }
+           }
+           */

 
 

-           buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.select('.close-button').html(_t.html('QA.keepRight.close')).on('click.close', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641

 
 

-             var qaService = services.osmose;
+           if (entity.tags.email) {
+             // Multiple emails are possible
+             var emails = entity.tags.email.split(';').map(function (s) {
+               return s.trim();
+             }).filter(function (x) {
+               return !isValidEmail(x);
+             });

 
 

-             if (qaService) {
-               d.newStatus = 'done';
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
+             if (emails.length) {
+               issues.push(new validationIssue({
+                 type: type,
+                 subtype: 'email',
+                 severity: 'warning',
+                 message: function message(context) {
+                   var entity = context.hasEntity(this.entityIds[0]);
+                   return entity ? _t.html('issues.invalid_format.email.message' + this.data, {
+                     feature: utilDisplayLabel(entity, context.graph()),
+                     email: emails.join(', ')
+                   }) : '';
+                 },
+                 reference: showReferenceEmail,
+                 entityIds: [entity.id],
+                 hash: emails.join(),
+                 data: emails.length > 1 ? '_multi' : ''
+               }));

              }
              }

-           });
-           buttonSection.select('.ignore-button').html(_t.html('QA.keepRight.ignore')).on('click.ignore', function (d3_event, d) {
-             this.blur(); // avoid keeping focus on the button - #4641
+           }

 
 

-             var qaService = services.osmose;
+           return issues;
+         };

 
 

-             if (qaService) {
-               d.newStatus = 'false';
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch$1.call('change', item);
-               });
-             }
-           });
-         } // NOTE: Don't change method name until UI v3 is merged
+         validation.type = type;
+         return validation;
+       }

 
 

+       function validationHelpRequest(context) {
+         var type = 'help_request';

 
 

-         osmoseEditor.error = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return osmoseEditor;
-         };
+         var validation = function checkFixmeTag(entity) {
+           if (!entity.tags.fixme) return []; // don't flag fixmes on features added by the user

 
 

-         return utilRebind(osmoseEditor, dispatch$1, 'on');
-       }
+           if (entity.version === undefined) return [];

 
 

-       function modeSelectError(context, selectedErrorID, selectedErrorService) {
-         var mode = {
-           id: 'select-error',
-           button: 'browse'
-         };
-         var keybinding = utilKeybinding('select-error');
-         var errorService = services[selectedErrorService];
-         var errorEditor;
+           if (entity.v !== undefined) {
+             var baseEntity = context.history().base().hasEntity(entity.id); // don't flag fixmes added by the user on existing features

 
 

-         switch (selectedErrorService) {
-           case 'improveOSM':
-             errorEditor = uiImproveOsmEditor(context).on('change', function () {
-               context.map().pan([0, 0]); // trigger a redraw
+             if (!baseEntity || !baseEntity.tags.fixme) return [];
+           }
+
+           return [new validationIssue({
+             type: type,
+             subtype: 'fixme_tag',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               return entity ? _t.html('issues.fixme_tag.message', {
+                 feature: utilDisplayLabel(entity, context.graph(), true
+                 /* verbose */
+                 )
+               }) : '';
+             },
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 title: _t.html('issues.fix.address_the_concern.title')
+               })];
+             },
+             reference: showReference,
+             entityIds: [entity.id]
+           })];

 
 

-               var error = checkSelectedID();
-               if (!error) return;
-               context.ui().sidebar.show(errorEditor.error(error));
-             });
-             break;
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.fixme_tag.reference'));
+           }
+         };

 
 

-           case 'keepRight':
-             errorEditor = uiKeepRightEditor(context).on('change', function () {
-               context.map().pan([0, 0]); // trigger a redraw
+         validation.type = type;
+         return validation;
+       }

 
 

-               var error = checkSelectedID();
-               if (!error) return;
-               context.ui().sidebar.show(errorEditor.error(error));
-             });
-             break;
+       function validationImpossibleOneway() {
+         var type = 'impossible_oneway';

 
 

-           case 'osmose':
-             errorEditor = uiOsmoseEditor(context).on('change', function () {
-               context.map().pan([0, 0]); // trigger a redraw
+         var validation = function checkImpossibleOneway(entity, graph) {
+           if (entity.type !== 'way' || entity.geometry(graph) !== 'line') return [];
+           if (entity.isClosed()) return [];
+           if (!typeForWay(entity)) return [];
+           if (!isOneway(entity)) return [];
+           var firstIssues = issuesForNode(entity, entity.first());
+           var lastIssues = issuesForNode(entity, entity.last());
+           return firstIssues.concat(lastIssues);

 
 

-               var error = checkSelectedID();
-               if (!error) return;
-               context.ui().sidebar.show(errorEditor.error(error));
-             });
-             break;
-         }
+           function typeForWay(way) {
+             if (way.geometry(graph) !== 'line') return null;
+             if (osmRoutableHighwayTagValues[way.tags.highway]) return 'highway';
+             if (osmFlowingWaterwayTagValues[way.tags.waterway]) return 'waterway';
+             return null;
+           }

 
 

-         var behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
+           function isOneway(way) {
+             if (way.tags.oneway === 'yes') return true;
+             if (way.tags.oneway) return false;

 
 

-         function checkSelectedID() {
-           if (!errorService) return;
-           var error = errorService.getError(selectedErrorID);
+             for (var key in way.tags) {
+               if (osmOneWayTags[key] && osmOneWayTags[key][way.tags[key]]) {
+                 return true;
+               }
+             }

 
 

-           if (!error) {
-             context.enter(modeBrowse(context));
+             return false;

            }
 
            }
 

-           return error;
-         }
+           function nodeOccursMoreThanOnce(way, nodeID) {
+             var occurrences = 0;

 
 

-         mode.zoomToSelected = function () {
-           if (!errorService) return;
-           var error = errorService.getError(selectedErrorID);
+             for (var index in way.nodes) {
+               if (way.nodes[index] === nodeID) {
+                 occurrences += 1;
+                 if (occurrences > 1) return true;
+               }
+             }

 
 

-           if (error) {
-             context.map().centerZoomEase(error.loc, 20);
+             return false;

            }
            }

-         };

 
 

-         mode.enter = function () {
-           var error = checkSelectedID();
-           if (!error) return;
-           behaviors.forEach(context.install);
-           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
-           select(document).call(keybinding);
-           selectError();
-           var sidebar = context.ui().sidebar;
-           sidebar.show(errorEditor.error(error));
-           context.map().on('drawn.select-error', selectError); // class the error as selected, or return to browse mode if the error is gone
+           function isConnectedViaOtherTypes(way, node) {
+             var wayType = typeForWay(way);

 
 

-           function selectError(d3_event, drawn) {
-             if (!checkSelectedID()) return;
-             var selection = context.surface().selectAll('.itemId-' + selectedErrorID + '.' + selectedErrorService);
+             if (wayType === 'highway') {
+               // entrances are considered connected
+               if (node.tags.entrance && node.tags.entrance !== 'no') return true;
+               if (node.tags.amenity === 'parking_entrance') return true;
+             } else if (wayType === 'waterway') {
+               if (node.id === way.first()) {
+                 // multiple waterways may start at the same spring
+                 if (node.tags.natural === 'spring') return true;
+               } else {
+                 // multiple waterways may end at the same drain
+                 if (node.tags.manhole === 'drain') return true;
+               }
+             }

 
 

-             if (selection.empty()) {
-               // Return to browse mode if selected DOM elements have
-               // disappeared because the user moved them out of view..
-               var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;
+             return graph.parentWays(node).some(function (parentWay) {
+               if (parentWay.id === way.id) return false;

 
 

-               if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
-                 context.enter(modeBrowse(context));
+               if (wayType === 'highway') {
+                 // allow connections to highway areas
+                 if (parentWay.geometry(graph) === 'area' && osmRoutableHighwayTagValues[parentWay.tags.highway]) return true; // count connections to ferry routes as connected
+
+                 if (parentWay.tags.route === 'ferry') return true;
+                 return graph.parentRelations(parentWay).some(function (parentRelation) {
+                   if (parentRelation.tags.type === 'route' && parentRelation.tags.route === 'ferry') return true; // allow connections to highway multipolygons
+
+                   return parentRelation.isMultipolygon() && osmRoutableHighwayTagValues[parentRelation.tags.highway];
+                 });
+               } else if (wayType === 'waterway') {
+                 // multiple waterways may start or end at a water body at the same node
+                 if (parentWay.tags.natural === 'water' || parentWay.tags.natural === 'coastline') return true;

                }
                }

-             } else {
-               selection.classed('selected', true);
-               context.selectedErrorID(selectedErrorID);
-             }
-           }

 
 

-           function esc() {
-             if (context.container().select('.combobox').size()) return;
-             context.enter(modeBrowse(context));
+               return false;
+             });

            }
            }

-         };

 
 

-         mode.exit = function () {
-           behaviors.forEach(context.uninstall);
-           select(document).call(keybinding.unbind);
-           context.surface().selectAll('.qaItem.selected').classed('selected hover', false);
-           context.map().on('drawn.select-error', null);
-           context.ui().sidebar.hide();
-           context.selectedErrorID(null);
-           context.features().forceVisible([]);
-         };
+           function issuesForNode(way, nodeID) {
+             var isFirst = nodeID === way.first();
+             var wayType = typeForWay(way); // ignore if this way is self-connected at this node

 
 

-         return mode;
-       }
+             if (nodeOccursMoreThanOnce(way, nodeID)) return [];
+             var osm = services.osm;
+             if (!osm) return [];
+             var node = graph.hasEntity(nodeID); // ignore if this node or its tile are unloaded

 
 

-       function behaviorSelect(context) {
-         var _tolerancePx = 4; // see also behaviorDrag
+             if (!node || !osm.isDataLoaded(node.loc)) return [];
+             if (isConnectedViaOtherTypes(way, node)) return [];
+             var attachedWaysOfSameType = graph.parentWays(node).filter(function (parentWay) {
+               if (parentWay.id === way.id) return false;
+               return typeForWay(parentWay) === wayType;
+             }); // assume it's okay for waterways to start or end disconnected for now

 
 

-         var _lastMouseEvent = null;
-         var _showMenu = false;
-         var _downPointers = {};
-         var _longPressTimeout = null;
-         var _lastInteractionType = null; // the id of the down pointer that's enabling multiselection while down
+             if (wayType === 'waterway' && attachedWaysOfSameType.length === 0) return [];
+             var attachedOneways = attachedWaysOfSameType.filter(function (attachedWay) {
+               return isOneway(attachedWay);
+             }); // ignore if the way is connected to some non-oneway features

 
 

-         var _multiselectionPointerId = null; // use pointer events on supported platforms; fallback to mouse events
+             if (attachedOneways.length < attachedWaysOfSameType.length) return [];

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+             if (attachedOneways.length) {
+               var connectedEndpointsOkay = attachedOneways.some(function (attachedOneway) {
+                 if ((isFirst ? attachedOneway.first() : attachedOneway.last()) !== nodeID) return true;
+                 if (nodeOccursMoreThanOnce(attachedOneway, nodeID)) return true;
+                 return false;
+               });
+               if (connectedEndpointsOkay) return [];
+             }

 
 

-         function keydown(d3_event) {
-           if (d3_event.keyCode === 32) {
-             // don't react to spacebar events during text input
-             var activeNode = document.activeElement;
-             if (activeNode && new Set(['INPUT', 'TEXTAREA']).has(activeNode.nodeName)) return;
-           }
+             var placement = isFirst ? 'start' : 'end',
+                 messageID = wayType + '.',
+                 referenceID = wayType + '.';

 
 

-           if (d3_event.keyCode === 93 || // context menu key
-           d3_event.keyCode === 32) {
-             // spacebar
-             d3_event.preventDefault();
-           }
+             if (wayType === 'waterway') {
+               messageID += 'connected.' + placement;
+               referenceID += 'connected';
+             } else {
+               messageID += placement;
+               referenceID += placement;
+             }

 
 

-           if (d3_event.repeat) return; // ignore repeated events for held keys
-           // if any key is pressed the user is probably doing something other than long-pressing
+             return [new validationIssue({
+               type: type,
+               subtype: wayType,
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(this.entityIds[0]);
+                 return entity ? _t.html('issues.impossible_oneway.' + messageID + '.message', {
+                   feature: utilDisplayLabel(entity, context.graph())
+                 }) : '';
+               },
+               reference: getReference(referenceID),
+               entityIds: [way.id, node.id],
+               dynamicFixes: function dynamicFixes() {
+                 var fixes = [];

 
 

-           cancelLongPress();
+                 if (attachedOneways.length) {
+                   fixes.push(new validationIssueFix({
+                     icon: 'iD-operation-reverse',
+                     title: _t.html('issues.fix.reverse_feature.title'),
+                     entityIds: [way.id],
+                     onClick: function onClick(context) {
+                       var id = this.issue.entityIds[0];
+                       context.perform(actionReverse(id), _t('operations.reverse.annotation.line', {
+                         n: 1
+                       }));
+                     }
+                   }));
+                 }

 
 

-           if (d3_event.shiftKey) {
-             context.surface().classed('behavior-multiselect', true);
-           }
+                 if (node.tags.noexit !== 'yes') {
+                   var textDirection = _mainLocalizer.textDirection();
+                   var useLeftContinue = isFirst && textDirection === 'ltr' || !isFirst && textDirection === 'rtl';
+                   fixes.push(new validationIssueFix({
+                     icon: 'iD-operation-continue' + (useLeftContinue ? '-left' : ''),
+                     title: _t.html('issues.fix.continue_from_' + (isFirst ? 'start' : 'end') + '.title'),
+                     onClick: function onClick(context) {
+                       var entityID = this.issue.entityIds[0];
+                       var vertexID = this.issue.entityIds[1];
+                       var way = context.entity(entityID);
+                       var vertex = context.entity(vertexID);
+                       continueDrawing(way, vertex, context);
+                     }
+                   }));
+                 }

 
 

-           if (d3_event.keyCode === 32) {
-             // spacebar
-             if (!_downPointers.spacebar && _lastMouseEvent) {
-               cancelLongPress();
-               _longPressTimeout = window.setTimeout(didLongPress, 500, 'spacebar', 'spacebar');
-               _downPointers.spacebar = {
-                 firstEvent: _lastMouseEvent,
-                 lastEvent: _lastMouseEvent
+                 return fixes;
+               },
+               loc: node.loc
+             })];
+
+             function getReference(referenceID) {
+               return function showReference(selection) {
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.impossible_oneway.' + referenceID + '.reference'));

                };
              }
            }
                };
              }
            }

-         }
+         };

 
 

-         function keyup(d3_event) {
-           cancelLongPress();
+         function continueDrawing(way, vertex, context) {
+           // make sure the vertex is actually visible and editable
+           var map = context.map();

 
 

-           if (!d3_event.shiftKey) {
-             context.surface().classed('behavior-multiselect', false);
+           if (!context.editable() || !map.trimmedExtent().contains(vertex.loc)) {
+             map.zoomToEase(vertex);

            }
 
            }
 

-           if (d3_event.keyCode === 93) {
-             // context menu key
-             d3_event.preventDefault();
-             _lastInteractionType = 'menukey';
-             contextmenu(d3_event);
-           } else if (d3_event.keyCode === 32) {
-             // spacebar
-             var pointer = _downPointers.spacebar;
-
-             if (pointer) {
-               delete _downPointers.spacebar;
-               if (pointer.done) return;
-               d3_event.preventDefault();
-               _lastInteractionType = 'spacebar';
-               click(pointer.firstEvent, pointer.lastEvent, 'spacebar');
-             }
-           }
+           context.enter(modeDrawLine(context, way.id, context.graph(), 'line', way.affix(vertex.id), true));

          }
 
          }
 

-         function pointerdown(d3_event) {
-           var id = (d3_event.pointerId || 'mouse').toString();
-           cancelLongPress();
-           if (d3_event.buttons && d3_event.buttons !== 1) return;
-           context.ui().closeEditMenu();
-           _longPressTimeout = window.setTimeout(didLongPress, 500, id, 'longdown-' + (d3_event.pointerType || 'mouse'));
-           _downPointers[id] = {
-             firstEvent: d3_event,
-             lastEvent: d3_event
-           };
-         }
+         validation.type = type;
+         return validation;
+       }

 
 

-         function didLongPress(id, interactionType) {
-           var pointer = _downPointers[id];
-           if (!pointer) return;
+       function validationIncompatibleSource() {
+         var type = 'incompatible_source';
+         var incompatibleRules = [{
+           id: 'amap',
+           regex: /(amap|autonavi|mapabc|高德)/i
+         }, {
+           id: 'baidu',
+           regex: /(baidu|mapbar|百度)/i
+         }, {
+           id: 'google',
+           regex: /google/i,
+           exceptRegex: /((books|drive)\.google|google\s?(books|drive|plus))/i
+         }];

 
 

-           for (var i in _downPointers) {
-             // don't allow this or any currently down pointer to trigger another click
-             _downPointers[i].done = true;
-           } // treat long presses like right-clicks
+         var validation = function checkIncompatibleSource(entity) {
+           var entitySources = entity.tags && entity.tags.source && entity.tags.source.split(';');
+           if (!entitySources) return [];
+           var entityID = entity.id;
+           return entitySources.map(function (source) {
+             var matchRule = incompatibleRules.find(function (rule) {
+               if (!rule.regex.test(source)) return false;
+               if (rule.exceptRegex && rule.exceptRegex.test(source)) return false;
+               return true;
+             });
+             if (!matchRule) return null;
+             return new validationIssue({
+               type: type,
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(entityID);
+                 return entity ? _t.html('issues.incompatible_source.feature.message', {
+                   feature: utilDisplayLabel(entity, context.graph(), true
+                   /* verbose */
+                   ),
+                   value: source
+                 }) : '';
+               },
+               reference: getReference(matchRule.id),
+               entityIds: [entityID],
+               hash: source,
+               dynamicFixes: function dynamicFixes() {
+                 return [new validationIssueFix({
+                   title: _t.html('issues.fix.remove_proprietary_data.title')
+                 })];
+               }
+             });
+           }).filter(Boolean);
+
+           function getReference(id) {
+             return function showReference(selection) {
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html("issues.incompatible_source.reference.".concat(id)));
+             };
+           }
+         };

 
 

+         validation.type = type;
+         return validation;
+       }

 
 

-           _longPressTimeout = null;
-           _lastInteractionType = interactionType;
-           _showMenu = true;
-           click(pointer.firstEvent, pointer.lastEvent, id);
-         }
+       function validationMaprules() {
+         var type = 'maprules';

 
 

-         function pointermove(d3_event) {
-           var id = (d3_event.pointerId || 'mouse').toString();
+         var validation = function checkMaprules(entity, graph) {
+           if (!services.maprules) return [];
+           var rules = services.maprules.validationRules();
+           var issues = [];

 
 

-           if (_downPointers[id]) {
-             _downPointers[id].lastEvent = d3_event;
+           for (var i = 0; i < rules.length; i++) {
+             var rule = rules[i];
+             rule.findIssues(entity, graph, issues);

            }
 
            }
 

-           if (!d3_event.pointerType || d3_event.pointerType === 'mouse') {
-             _lastMouseEvent = d3_event;
+           return issues;
+         };

 
 

-             if (_downPointers.spacebar) {
-               _downPointers.spacebar.lastEvent = d3_event;
-             }
+         validation.type = type;
+         return validation;
+       }
+
+       function validationMismatchedGeometry() {
+         var type = 'mismatched_geometry';
+
+         function tagSuggestingLineIsArea(entity) {
+           if (entity.type !== 'way' || entity.isClosed()) return null;
+           var tagSuggestingArea = entity.tagSuggestingArea();
+
+           if (!tagSuggestingArea) {
+             return null;

            }
            }

-         }

 
 

-         function pointerup(d3_event) {
-           var id = (d3_event.pointerId || 'mouse').toString();
-           var pointer = _downPointers[id];
-           if (!pointer) return;
-           delete _downPointers[id];
+           var asLine = _mainPresetIndex.matchTags(tagSuggestingArea, 'line');
+           var asArea = _mainPresetIndex.matchTags(tagSuggestingArea, 'area');

 
 

-           if (_multiselectionPointerId === id) {
-             _multiselectionPointerId = null;
+           if (asLine && asArea && asLine === asArea) {
+             // these tags also allow lines and making this an area wouldn't matter
+             return null;

            }
 
            }
 

-           if (pointer.done) return;
-           click(pointer.firstEvent, d3_event, id);
+           return tagSuggestingArea;

          }
 
          }
 

-         function pointercancel(d3_event) {
-           var id = (d3_event.pointerId || 'mouse').toString();
-           if (!_downPointers[id]) return;
-           delete _downPointers[id];
+         function makeConnectEndpointsFixOnClick(way, graph) {
+           // must have at least three nodes to close this automatically
+           if (way.nodes.length < 3) return null;
+           var nodes = graph.childNodes(way),
+               testNodes;
+           var firstToLastDistanceMeters = geoSphericalDistance(nodes[0].loc, nodes[nodes.length - 1].loc); // if the distance is very small, attempt to merge the endpoints

 
 

-           if (_multiselectionPointerId === id) {
-             _multiselectionPointerId = null;
-           }
-         }
+           if (firstToLastDistanceMeters < 0.75) {
+             testNodes = nodes.slice(); // shallow copy

 
 

-         function contextmenu(d3_event) {
-           d3_event.preventDefault();
+             testNodes.pop();
+             testNodes.push(testNodes[0]); // make sure this will not create a self-intersection

 
 

-           if (!+d3_event.clientX && !+d3_event.clientY) {
-             if (_lastMouseEvent) {
-               d3_event.sourceEvent = _lastMouseEvent;
-             } else {
-               return;
+             if (!geoHasSelfIntersections(testNodes, testNodes[0].id)) {
+               return function (context) {
+                 var way = context.entity(this.issue.entityIds[0]);
+                 context.perform(actionMergeNodes([way.nodes[0], way.nodes[way.nodes.length - 1]], nodes[0].loc), _t('issues.fix.connect_endpoints.annotation'));
+               };

              }
              }

-           } else {
-             _lastMouseEvent = d3_event;
-             _lastInteractionType = 'rightclick';
-           }
+           } // if the points were not merged, attempt to close the way

 
 

-           _showMenu = true;
-           click(d3_event, d3_event);
-         }

 
 

-         function click(firstEvent, lastEvent, pointerId) {
-           cancelLongPress();
-           var mapNode = context.container().select('.main-map').node(); // Use the `main-map` coordinate system since the surface and supersurface
-           // are transformed when drag-panning.
+           testNodes = nodes.slice(); // shallow copy

 
 

-           var pointGetter = utilFastMouse(mapNode);
-           var p1 = pointGetter(firstEvent);
-           var p2 = pointGetter(lastEvent);
-           var dist = geoVecLength(p1, p2);
+           testNodes.push(testNodes[0]); // make sure this will not create a self-intersection

 
 

-           if (dist > _tolerancePx || !mapContains(lastEvent)) {
-             resetProperties();
-             return;
+           if (!geoHasSelfIntersections(testNodes, testNodes[0].id)) {
+             return function (context) {
+               var wayId = this.issue.entityIds[0];
+               var way = context.entity(wayId);
+               var nodeId = way.nodes[0];
+               var index = way.nodes.length;
+               context.perform(actionAddVertex(wayId, nodeId, index), _t('issues.fix.connect_endpoints.annotation'));
+             };

            }
            }

+         }

 
 

-           var targetDatum = lastEvent.target.__data__;
-           var multiselectEntityId;
-
-           if (!_multiselectionPointerId) {
-             // If a different pointer than the one triggering this click is down on a
-             // feature, treat this and all future clicks as multiselection until that
-             // pointer is raised.
-             var selectPointerInfo = pointerDownOnSelection(pointerId);
+         function lineTaggedAsAreaIssue(entity) {
+           var tagSuggestingArea = tagSuggestingLineIsArea(entity);
+           if (!tagSuggestingArea) return null;
+           return new validationIssue({
+             type: type,
+             subtype: 'area_as_line',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               return entity ? _t.html('issues.tag_suggests_area.message', {
+                 feature: utilDisplayLabel(entity, 'area', true
+                 /* verbose */
+                 ),
+                 tag: utilTagText({
+                   tags: tagSuggestingArea
+                 })
+               }) : '';
+             },
+             reference: showReference,
+             entityIds: [entity.id],
+             hash: JSON.stringify(tagSuggestingArea),
+             dynamicFixes: function dynamicFixes(context) {
+               var fixes = [];
+               var entity = context.entity(this.entityIds[0]);
+               var connectEndsOnClick = makeConnectEndpointsFixOnClick(entity, context.graph());
+               fixes.push(new validationIssueFix({
+                 title: _t.html('issues.fix.connect_endpoints.title'),
+                 onClick: connectEndsOnClick
+               }));
+               fixes.push(new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.remove_tag.title'),
+                 onClick: function onClick(context) {
+                   var entityId = this.issue.entityIds[0];
+                   var entity = context.entity(entityId);
+                   var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-             if (selectPointerInfo) {
-               _multiselectionPointerId = selectPointerInfo.pointerId; // if the other feature isn't selected yet, make sure we select it
+                   for (var key in tagSuggestingArea) {
+                     delete tags[key];
+                   }

 
 

-               multiselectEntityId = !selectPointerInfo.selected && selectPointerInfo.entityId;
-               _downPointers[selectPointerInfo.pointerId].done = true;
+                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_tag.annotation'));
+                 }
+               }));
+               return fixes;

              }
              }

-           } // support multiselect if data is already selected
-
-
-           var isMultiselect = context.mode().id === 'select' && ( // and shift key is down
-           lastEvent && lastEvent.shiftKey || // or we're lasso-selecting
-           context.surface().select('.lasso').node() || // or a pointer is down over a selected feature
-           _multiselectionPointerId && !multiselectEntityId);
-
-           processClick(targetDatum, isMultiselect, p2, multiselectEntityId);
+           });

 
 

-           function mapContains(event) {
-             var rect = mapNode.getBoundingClientRect();
-             return event.clientX >= rect.left && event.clientX <= rect.right && event.clientY >= rect.top && event.clientY <= rect.bottom;
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.tag_suggests_area.reference'));

            }
            }

+         }

 
 

-           function pointerDownOnSelection(skipPointerId) {
-             var mode = context.mode();
-             var selectedIDs = mode.id === 'select' ? mode.selectedIDs() : [];
+         function vertexPointIssue(entity, graph) {
+           // we only care about nodes
+           if (entity.type !== 'node') return null; // ignore tagless points

 
 

-             for (var pointerId in _downPointers) {
-               if (pointerId === 'spacebar' || pointerId === skipPointerId) continue;
-               var pointerInfo = _downPointers[pointerId];
-               var p1 = pointGetter(pointerInfo.firstEvent);
-               var p2 = pointGetter(pointerInfo.lastEvent);
-               if (geoVecLength(p1, p2) > _tolerancePx) continue;
-               var datum = pointerInfo.firstEvent.target.__data__;
-               var entity = datum && datum.properties && datum.properties.entity || datum;
-               if (context.graph().hasEntity(entity.id)) return {
-                 pointerId: pointerId,
-                 entityId: entity.id,
-                 selected: selectedIDs.indexOf(entity.id) !== -1
-               };
-             }
+           if (Object.keys(entity.tags).length === 0) return null; // address lines are special so just ignore them

 
 

-             return null;
+           if (entity.isOnAddressLine(graph)) return null;
+           var geometry = entity.geometry(graph);
+           var allowedGeometries = osmNodeGeometriesForTags(entity.tags);
+
+           if (geometry === 'point' && !allowedGeometries.point && allowedGeometries.vertex) {
+             return new validationIssue({
+               type: type,
+               subtype: 'vertex_as_point',
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(this.entityIds[0]);
+                 return entity ? _t.html('issues.vertex_as_point.message', {
+                   feature: utilDisplayLabel(entity, 'vertex', true
+                   /* verbose */
+                   )
+                 }) : '';
+               },
+               reference: function showReference(selection) {
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.vertex_as_point.reference'));
+               },
+               entityIds: [entity.id]
+             });
+           } else if (geometry === 'vertex' && !allowedGeometries.vertex && allowedGeometries.point) {
+             return new validationIssue({
+               type: type,
+               subtype: 'point_as_vertex',
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(this.entityIds[0]);
+                 return entity ? _t.html('issues.point_as_vertex.message', {
+                   feature: utilDisplayLabel(entity, 'point', true
+                   /* verbose */
+                   )
+                 }) : '';
+               },
+               reference: function showReference(selection) {
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.point_as_vertex.reference'));
+               },
+               entityIds: [entity.id],
+               dynamicFixes: extractPointDynamicFixes
+             });

            }
            }

-         }

 
 

-         function processClick(datum, isMultiselect, point, alsoSelectId) {
-           var mode = context.mode();
-           var showMenu = _showMenu;
-           var interactionType = _lastInteractionType;
-           var entity = datum && datum.properties && datum.properties.entity;
-           if (entity) datum = entity;
+           return null;
+         }

 
 

-           if (datum && datum.type === 'midpoint') {
-             // treat targeting midpoints as if targeting the parent way
-             datum = datum.parents[0];
+         function otherMismatchIssue(entity, graph) {
+           // ignore boring features
+           if (!entity.hasInterestingTags()) return null;
+           if (entity.type !== 'node' && entity.type !== 'way') return null; // address lines are special so just ignore them
+
+           if (entity.type === 'node' && entity.isOnAddressLine(graph)) return null;
+           var sourceGeom = entity.geometry(graph);
+           var targetGeoms = entity.type === 'way' ? ['point', 'vertex'] : ['line', 'area'];
+           if (sourceGeom === 'area') targetGeoms.unshift('line');
+           var asSource = _mainPresetIndex.match(entity, graph);
+           var targetGeom = targetGeoms.find(function (nodeGeom) {
+             var asTarget = _mainPresetIndex.matchTags(entity.tags, nodeGeom);
+             if (!asSource || !asTarget || asSource === asTarget || // sometimes there are two presets with the same tags for different geometries
+             fastDeepEqual(asSource.tags, asTarget.tags)) return false;
+             if (asTarget.isFallback()) return false;
+             var primaryKey = Object.keys(asTarget.tags)[0]; // special case: buildings-as-points are discouraged by iD, but common in OSM, so ignore them
+
+             if (primaryKey === 'building') return false;
+             if (asTarget.tags[primaryKey] === '*') return false;
+             return asSource.isFallback() || asSource.tags[primaryKey] === '*';
+           });
+           if (!targetGeom) return null;
+           var subtype = targetGeom + '_as_' + sourceGeom;
+           if (targetGeom === 'vertex') targetGeom = 'point';
+           if (sourceGeom === 'vertex') sourceGeom = 'point';
+           var referenceId = targetGeom + '_as_' + sourceGeom;
+           var dynamicFixes;
+
+           if (targetGeom === 'point') {
+             dynamicFixes = extractPointDynamicFixes;
+           } else if (sourceGeom === 'area' && targetGeom === 'line') {
+             dynamicFixes = lineToAreaDynamicFixes;

            }
 
            }
 

-           var newMode;
+           return new validationIssue({
+             type: type,
+             subtype: subtype,
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               return entity ? _t.html('issues.' + referenceId + '.message', {
+                 feature: utilDisplayLabel(entity, targetGeom, true
+                 /* verbose */
+                 )
+               }) : '';
+             },
+             reference: function showReference(selection) {
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.mismatched_geometry.reference'));
+             },
+             entityIds: [entity.id],
+             dynamicFixes: dynamicFixes
+           });
+         }

 
 

-           if (datum instanceof osmEntity) {
-             // targeting an entity
-             var selectedIDs = context.selectedIDs();
-             context.selectedNoteID(null);
-             context.selectedErrorID(null);
+         function lineToAreaDynamicFixes(context) {
+           var convertOnClick;
+           var entityId = this.entityIds[0];
+           var entity = context.entity(entityId);
+           var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-             if (!isMultiselect) {
-               // don't change the selection if we're toggling the menu atop a multiselection
-               if (!showMenu || selectedIDs.length <= 1 || selectedIDs.indexOf(datum.id) === -1) {
-                 if (alsoSelectId === datum.id) alsoSelectId = null;
-                 selectedIDs = (alsoSelectId ? [alsoSelectId] : []).concat([datum.id]); // always enter modeSelect even if the entity is already
-                 // selected since listeners may expect `context.enter` events,
-                 // e.g. in the walkthrough
+           delete tags.area;

 
 

-                 newMode = mode.id === 'select' ? mode.selectedIDs(selectedIDs) : modeSelect(context, selectedIDs).selectBehavior(behavior);
-                 context.enter(newMode);
-               }
-             } else {
-               if (selectedIDs.indexOf(datum.id) !== -1) {
-                 // clicked entity is already in the selectedIDs list..
-                 if (!showMenu) {
-                   // deselect clicked entity, then reenter select mode or return to browse mode..
-                   selectedIDs = selectedIDs.filter(function (id) {
-                     return id !== datum.id;
-                   });
-                   newMode = selectedIDs.length ? mode.selectedIDs(selectedIDs) : modeBrowse(context).selectBehavior(behavior);
-                   context.enter(newMode);
-                 }
-               } else {
-                 // clicked entity is not in the selected list, add it..
-                 selectedIDs = selectedIDs.concat([datum.id]);
-                 newMode = mode.selectedIDs(selectedIDs);
-                 context.enter(newMode);
+           if (!osmTagSuggestingArea(tags)) {
+             // if removing the area tag would make this a line, offer that as a quick fix
+             convertOnClick = function convertOnClick(context) {
+               var entityId = this.issue.entityIds[0];
+               var entity = context.entity(entityId);
+               var tags = Object.assign({}, entity.tags); // shallow copy
+
+               if (tags.area) {
+                 delete tags.area;

                }
                }

-             }
-           } else if (datum && datum.__featurehash__ && !isMultiselect) {
-             // targeting custom data
-             context.selectedNoteID(null).enter(modeSelectData(context, datum));
-           } else if (datum instanceof osmNote && !isMultiselect) {
-             // targeting a note
-             context.selectedNoteID(datum.id).enter(modeSelectNote(context, datum.id));
-           } else if (datum instanceof QAItem & !isMultiselect) {
-             // targeting an external QA issue
-             context.selectedErrorID(datum.id).enter(modeSelectError(context, datum.id, datum.service));
-           } else {
-             // targeting nothing
-             context.selectedNoteID(null);
-             context.selectedErrorID(null);

 
 

-             if (!isMultiselect && mode.id !== 'browse') {
-               context.enter(modeBrowse(context));
-             }
+               context.perform(actionChangeTags(entityId, tags), _t('issues.fix.convert_to_line.annotation'));
+             };

            }
 
            }
 

-           context.ui().closeEditMenu(); // always request to show the edit menu in case the mode needs it
-
-           if (showMenu) context.ui().showEditMenu(point, interactionType);
-           resetProperties();
+           return [new validationIssueFix({
+             icon: 'iD-icon-line',
+             title: _t.html('issues.fix.convert_to_line.title'),
+             onClick: convertOnClick
+           })];

          }
 
          }
 

-         function cancelLongPress() {
-           if (_longPressTimeout) window.clearTimeout(_longPressTimeout);
-           _longPressTimeout = null;
-         }
+         function extractPointDynamicFixes(context) {
+           var entityId = this.entityIds[0];
+           var extractOnClick = null;

 
 

-         function resetProperties() {
-           cancelLongPress();
-           _showMenu = false;
-           _lastInteractionType = null; // don't reset _lastMouseEvent since it might still be useful
-         }
+           if (!context.hasHiddenConnections(entityId)) {
+             extractOnClick = function extractOnClick(context) {
+               var entityId = this.issue.entityIds[0];
+               var action = actionExtract(entityId, context.projection);
+               context.perform(action, _t('operations.extract.annotation', {
+                 n: 1
+               })); // re-enter mode to trigger updates

 
 

-         function behavior(selection) {
-           resetProperties();
-           _lastMouseEvent = context.map().lastPointerEvent();
-           select(window).on('keydown.select', keydown).on('keyup.select', keyup).on(_pointerPrefix + 'move.select', pointermove, true).on(_pointerPrefix + 'up.select', pointerup, true).on('pointercancel.select', pointercancel, true).on('contextmenu.select-window', function (d3_event) {
-             // Edge and IE really like to show the contextmenu on the
-             // menubar when user presses a keyboard menu button
-             // even after we've already preventdefaulted the key event.
-             var e = d3_event;
+               context.enter(modeSelect(context, [action.getExtractedNodeID()]));
+             };
+           }

 
 

-             if (+e.clientX === 0 && +e.clientY === 0) {
-               d3_event.preventDefault();
-             }
-           });
-           selection.on(_pointerPrefix + 'down.select', pointerdown).on('contextmenu.select', contextmenu);
-           /*if (d3_event && d3_event.shiftKey) {
-               context.surface()
-                   .classed('behavior-multiselect', true);
-           }*/
+           return [new validationIssueFix({
+             icon: 'iD-operation-extract',
+             title: _t.html('issues.fix.extract_point.title'),
+             onClick: extractOnClick
+           })];

          }
 
          }
 

-         behavior.off = function (selection) {
-           cancelLongPress();
-           select(window).on('keydown.select', null).on('keyup.select', null).on('contextmenu.select-window', null).on(_pointerPrefix + 'move.select', null, true).on(_pointerPrefix + 'up.select', null, true).on('pointercancel.select', null, true);
-           selection.on(_pointerPrefix + 'down.select', null).on('contextmenu.select', null);
-           context.surface().classed('behavior-multiselect', false);
-         };
+         function unclosedMultipolygonPartIssues(entity, graph) {
+           if (entity.type !== 'relation' || !entity.isMultipolygon() || entity.isDegenerate() || // cannot determine issues for incompletely-downloaded relations
+           !entity.isComplete(graph)) return [];
+           var sequences = osmJoinWays(entity.members, graph);
+           var issues = [];

 
 

-         return behavior;
-       }
+           for (var i in sequences) {
+             var sequence = sequences[i];
+             if (!sequence.nodes) continue;
+             var firstNode = sequence.nodes[0];
+             var lastNode = sequence.nodes[sequence.nodes.length - 1]; // part is closed if the first and last nodes are the same

 
 

-       function behaviorDrawWay(context, wayID, mode, startGraph) {
-         var dispatch$1 = dispatch('rejectedSelfIntersection');
-         var behavior = behaviorDraw(context); // Must be set by `drawWay.nodeIndex` before each install of this behavior.
+             if (firstNode === lastNode) continue;
+             var issue = new validationIssue({
+               type: type,
+               subtype: 'unclosed_multipolygon_part',
+               severity: 'warning',
+               message: function message(context) {
+                 var entity = context.hasEntity(this.entityIds[0]);
+                 return entity ? _t.html('issues.unclosed_multipolygon_part.message', {
+                   feature: utilDisplayLabel(entity, context.graph(), true
+                   /* verbose */
+                   )
+                 }) : '';
+               },
+               reference: showReference,
+               loc: sequence.nodes[0].loc,
+               entityIds: [entity.id],
+               hash: sequence.map(function (way) {
+                 return way.id;
+               }).join()
+             });
+             issues.push(issue);
+           }

 
 

-         var _nodeIndex;
+           return issues;

 
 

-         var _origWay;
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unclosed_multipolygon_part.reference'));
+           }
+         }

 
 

-         var _wayGeometry;
+         var validation = function checkMismatchedGeometry(entity, graph) {
+           var vertexPoint = vertexPointIssue(entity, graph);
+           if (vertexPoint) return [vertexPoint];
+           var lineAsArea = lineTaggedAsAreaIssue(entity);
+           if (lineAsArea) return [lineAsArea];
+           var mismatch = otherMismatchIssue(entity, graph);
+           if (mismatch) return [mismatch];
+           return unclosedMultipolygonPartIssues(entity, graph);
+         };

 
 

-         var _headNodeID;
+         validation.type = type;
+         return validation;
+       }

 
 

-         var _annotation;
+       function validationMissingRole() {
+         var type = 'missing_role';

 
 

-         var _pointerHasMoved = false; // The osmNode to be placed.
-         // This is temporary and just follows the mouse cursor until an "add" event occurs.
+         var validation = function checkMissingRole(entity, graph) {
+           var issues = [];

 
 

-         var _drawNode;
+           if (entity.type === 'way') {
+             graph.parentRelations(entity).forEach(function (relation) {
+               if (!relation.isMultipolygon()) return;
+               var member = relation.memberById(entity.id);

 
 

-         var _didResolveTempEdit = false;
+               if (member && isMissingRole(member)) {
+                 issues.push(makeIssue(entity, relation, member));
+               }
+             });
+           } else if (entity.type === 'relation' && entity.isMultipolygon()) {
+             entity.indexedMembers().forEach(function (member) {
+               var way = graph.hasEntity(member.id);

 
 

-         function createDrawNode(loc) {
-           // don't make the draw node until we actually need it
-           _drawNode = osmNode({
-             loc: loc
-           });
-           context.pauseChangeDispatch();
-           context.replace(function actionAddDrawNode(graph) {
-             // add the draw node to the graph and insert it into the way
-             var way = graph.entity(wayID);
-             return graph.replace(_drawNode).replace(way.addNode(_drawNode.id, _nodeIndex));
-           }, _annotation);
-           context.resumeChangeDispatch();
-           setActiveElements();
-         }
+               if (way && isMissingRole(member)) {
+                 issues.push(makeIssue(way, entity, member));
+               }
+             });
+           }

 
 

-         function removeDrawNode() {
-           context.pauseChangeDispatch();
-           context.replace(function actionDeleteDrawNode(graph) {
-             var way = graph.entity(wayID);
-             return graph.replace(way.removeNode(_drawNode.id)).remove(_drawNode);
-           }, _annotation);
-           _drawNode = undefined;
-           context.resumeChangeDispatch();
+           return issues;
+         };
+
+         function isMissingRole(member) {
+           return !member.role || !member.role.trim().length;

          }
 
          }
 

-         function keydown(d3_event) {
-           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             if (context.surface().classed('nope')) {
-               context.surface().classed('nope-suppressed', true);
+         function makeIssue(way, relation, member) {
+           return new validationIssue({
+             type: type,
+             severity: 'warning',
+             message: function message(context) {
+               var member = context.hasEntity(this.entityIds[1]),
+                   relation = context.hasEntity(this.entityIds[0]);
+               return member && relation ? _t.html('issues.missing_role.message', {
+                 member: utilDisplayLabel(member, context.graph()),
+                 relation: utilDisplayLabel(relation, context.graph())
+               }) : '';
+             },
+             reference: showReference,
+             entityIds: [relation.id, way.id],
+             data: {
+               member: member
+             },
+             hash: member.index.toString(),
+             dynamicFixes: function dynamicFixes() {
+               return [makeAddRoleFix('inner'), makeAddRoleFix('outer'), new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.remove_from_relation.title'),
+                 onClick: function onClick(context) {
+                   context.perform(actionDeleteMember(this.issue.entityIds[0], this.issue.data.member.index), _t('operations.delete_member.annotation', {
+                     n: 1
+                   }));
+                 }
+               })];

              }
              }

+           });

 
 

-             context.surface().classed('nope', false).classed('nope-disabled', true);
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.missing_role.multipolygon.reference'));

            }
          }
 
            }
          }
 

-         function keyup(d3_event) {
-           if (d3_event.keyCode === utilKeybinding.modifierCodes.alt) {
-             if (context.surface().classed('nope-suppressed')) {
-               context.surface().classed('nope', true);
+         function makeAddRoleFix(role) {
+           return new validationIssueFix({
+             title: _t.html('issues.fix.set_as_' + role + '.title'),
+             onClick: function onClick(context) {
+               var oldMember = this.issue.data.member;
+               var member = {
+                 id: this.issue.entityIds[1],
+                 type: oldMember.type,
+                 role: role
+               };
+               context.perform(actionChangeMember(this.issue.entityIds[0], member, oldMember.index), _t('operations.change_role.annotation', {
+                 n: 1
+               }));

              }
              }

-
-             context.surface().classed('nope-suppressed', false).classed('nope-disabled', false);
-           }
+           });

          }
 
          }
 

-         function allowsVertex(d) {
-           return d.geometry(context.graph()) === 'vertex' || _mainPresetIndex.allowsVertex(d, context.graph());
-         } // related code
-         // - `mode/drag_node.js`     `doMove()`
-         // - `behavior/draw.js`      `click()`
-         // - `behavior/draw_way.js`  `move()`
-
+         validation.type = type;
+         return validation;
+       }

 
 

-         function move(d3_event, datum) {
-           var loc = context.map().mouseCoordinates();
-           if (!_drawNode) createDrawNode(loc);
-           context.surface().classed('nope-disabled', d3_event.altKey);
-           var targetLoc = datum && datum.properties && datum.properties.entity && allowsVertex(datum.properties.entity) && datum.properties.entity.loc;
-           var targetNodes = datum && datum.properties && datum.properties.nodes;
+       function validationMissingTag(context) {
+         var type = 'missing_tag';

 
 

-           if (targetLoc) {
-             // snap to node/vertex - a point target with `.loc`
-             loc = targetLoc;
-           } else if (targetNodes) {
-             // snap to way - a line target with `.nodes`
-             var choice = geoChooseEdge(targetNodes, context.map().mouse(), context.projection, _drawNode.id);
+         function hasDescriptiveTags(entity, graph) {
+           var onlyAttributeKeys = ['description', 'name', 'note', 'start_date'];
+           var entityDescriptiveKeys = Object.keys(entity.tags).filter(function (k) {
+             if (k === 'area' || !osmIsInterestingTag(k)) return false;
+             return !onlyAttributeKeys.some(function (attributeKey) {
+               return k === attributeKey || k.indexOf(attributeKey + ':') === 0;
+             });
+           });

 
 

-             if (choice) {
-               loc = choice.loc;
-             }
+           if (entity.type === 'relation' && entityDescriptiveKeys.length === 1 && entity.tags.type === 'multipolygon') {
+             // this relation's only interesting tag just says its a multipolygon,
+             // which is not descriptive enough
+             // It's okay for a simple multipolygon to have no descriptive tags
+             // if its outer way has them (old model, see `outdated_tags.js`)
+             return osmOldMultipolygonOuterMemberOfRelation(entity, graph);

            }
 
            }
 

-           context.replace(actionMoveNode(_drawNode.id, loc), _annotation);
-           _drawNode = context.entity(_drawNode.id);
-           checkGeometry(true
-           /* includeDrawNode */
-           );
-         } // Check whether this edit causes the geometry to break.
-         // If so, class the surface with a nope cursor.
-         // `includeDrawNode` - Only check the relevant line segments if finishing drawing
-
-
-         function checkGeometry(includeDrawNode) {
-           var nopeDisabled = context.surface().classed('nope-disabled');
-           var isInvalid = isInvalidGeometry(includeDrawNode);
+           return entityDescriptiveKeys.length > 0;
+         }

 
 

-           if (nopeDisabled) {
-             context.surface().classed('nope', false).classed('nope-suppressed', isInvalid);
-           } else {
-             context.surface().classed('nope', isInvalid).classed('nope-suppressed', false);
-           }
+         function isUnknownRoad(entity) {
+           return entity.type === 'way' && entity.tags.highway === 'road';

          }
 
          }
 

-         function isInvalidGeometry(includeDrawNode) {
-           var testNode = _drawNode; // we only need to test the single way we're drawing
+         function isUntypedRelation(entity) {
+           return entity.type === 'relation' && !entity.tags.type;
+         }

 
 

-           var parentWay = context.graph().entity(wayID);
-           var nodes = context.graph().childNodes(parentWay).slice(); // shallow copy
+         var validation = function checkMissingTag(entity, graph) {
+           var subtype;
+           var osm = context.connection();
+           var isUnloadedNode = entity.type === 'node' && osm && !osm.isDataLoaded(entity.loc); // we can't know if the node is a vertex if the tile is undownloaded

 
 

-           if (includeDrawNode) {
-             if (parentWay.isClosed()) {
-               // don't test the last segment for closed ways - #4655
-               // (still test the first segment)
-               nodes.pop();
-             }
-           } else {
-             // discount the draw node
-             if (parentWay.isClosed()) {
-               if (nodes.length < 3) return false;
-               if (_drawNode) nodes.splice(-2, 1);
-               testNode = nodes[nodes.length - 2];
-             } else {
-               // there's nothing we need to test if we ignore the draw node on open ways
-               return false;
+           if (!isUnloadedNode && // allow untagged nodes that are part of ways
+           entity.geometry(graph) !== 'vertex' && // allow untagged entities that are part of relations
+           !entity.hasParentRelations(graph)) {
+             if (Object.keys(entity.tags).length === 0) {
+               subtype = 'any';
+             } else if (!hasDescriptiveTags(entity, graph)) {
+               subtype = 'descriptive';
+             } else if (isUntypedRelation(entity)) {
+               subtype = 'relation_type';

              }
              }

-           }
-
-           return testNode && geoHasSelfIntersections(nodes, testNode.id);
-         }
-
-         function undone() {
-           // undoing removed the temp edit
-           _didResolveTempEdit = true;
-           context.pauseChangeDispatch();
-           var nextMode;
+           } // flag an unknown road even if it's a member of a relation

 
 

-           if (context.graph() === startGraph) {
-             // We've undone back to the initial state before we started drawing.
-             // Just exit the draw mode without undoing whatever we did before
-             // we entered the draw mode.
-             nextMode = modeSelect(context, [wayID]);
-           } else {
-             // The `undo` only removed the temporary edit, so here we have to
-             // manually undo to actually remove the last node we added. We can't
-             // use the `undo` function since the initial "add" graph doesn't have
-             // an annotation and so cannot be undone to.
-             context.pop(1); // continue drawing

 
 

-             nextMode = mode;
-           } // clear the redo stack by adding and removing a blank edit
+           if (!subtype && isUnknownRoad(entity)) {
+             subtype = 'highway_classification';
+           }

 
 

+           if (!subtype) return [];
+           var messageID = subtype === 'highway_classification' ? 'unknown_road' : 'missing_tag.' + subtype;
+           var referenceID = subtype === 'highway_classification' ? 'unknown_road' : 'missing_tag'; // can always delete if the user created it in the first place..

 
 

-           context.perform(actionNoop());
-           context.pop(1);
-           context.resumeChangeDispatch();
-           context.enter(nextMode);
-         }
+           var canDelete = entity.version === undefined || entity.v !== undefined;
+           var severity = canDelete && subtype !== 'highway_classification' ? 'error' : 'warning';
+           return [new validationIssue({
+             type: type,
+             subtype: subtype,
+             severity: severity,
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               return entity ? _t.html('issues.' + messageID + '.message', {
+                 feature: utilDisplayLabel(entity, context.graph())
+               }) : '';
+             },
+             reference: showReference,
+             entityIds: [entity.id],
+             dynamicFixes: function dynamicFixes(context) {
+               var fixes = [];
+               var selectFixType = subtype === 'highway_classification' ? 'select_road_type' : 'select_preset';
+               fixes.push(new validationIssueFix({
+                 icon: 'iD-icon-search',
+                 title: _t.html('issues.fix.' + selectFixType + '.title'),
+                 onClick: function onClick(context) {
+                   context.ui().sidebar.showPresetList();
+                 }
+               }));
+               var deleteOnClick;
+               var id = this.entityIds[0];
+               var operation = operationDelete(context, [id]);
+               var disabledReasonID = operation.disabled();

 
 

-         function setActiveElements() {
-           if (!_drawNode) return;
-           context.surface().selectAll('.' + _drawNode.id).classed('active', true);
-         }
+               if (!disabledReasonID) {
+                 deleteOnClick = function deleteOnClick(context) {
+                   var id = this.issue.entityIds[0];
+                   var operation = operationDelete(context, [id]);

 
 

-         function resetToStartGraph() {
-           while (context.graph() !== startGraph) {
-             context.pop();
-           }
-         }
+                   if (!operation.disabled()) {
+                     operation();
+                   }
+                 };
+               }

 
 

-         var drawWay = function drawWay(surface) {
-           _drawNode = undefined;
-           _didResolveTempEdit = false;
-           _origWay = context.entity(wayID);
-           _headNodeID = typeof _nodeIndex === 'number' ? _origWay.nodes[_nodeIndex] : _origWay.isClosed() ? _origWay.nodes[_origWay.nodes.length - 2] : _origWay.nodes[_origWay.nodes.length - 1];
-           _wayGeometry = _origWay.geometry(context.graph());
-           _annotation = _t((_origWay.nodes.length === (_origWay.isClosed() ? 2 : 1) ? 'operations.start.annotation.' : 'operations.continue.annotation.') + _wayGeometry);
-           _pointerHasMoved = false; // Push an annotated state for undo to return back to.
-           // We must make sure to replace or remove it later.
+               fixes.push(new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.delete_feature.title'),
+                 disabledReason: disabledReasonID ? _t('operations.delete.' + disabledReasonID + '.single') : undefined,
+                 onClick: deleteOnClick
+               }));
+               return fixes;
+             }
+           })];

 
 

-           context.pauseChangeDispatch();
-           context.perform(actionNoop(), _annotation);
-           context.resumeChangeDispatch();
-           behavior.hover().initialNodeID(_headNodeID);
-           behavior.on('move', function () {
-             _pointerHasMoved = true;
-             move.apply(this, arguments);
-           }).on('down', function () {
-             move.apply(this, arguments);
-           }).on('downcancel', function () {
-             if (_drawNode) removeDrawNode();
-           }).on('click', drawWay.add).on('clickWay', drawWay.addWay).on('clickNode', drawWay.addNode).on('undo', context.undo).on('cancel', drawWay.cancel).on('finish', drawWay.finish);
-           select(window).on('keydown.drawWay', keydown).on('keyup.drawWay', keyup);
-           context.map().dblclickZoomEnable(false).on('drawn.draw', setActiveElements);
-           setActiveElements();
-           surface.call(behavior);
-           context.history().on('undone.draw', undone);
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.' + referenceID + '.reference'));
+           }

          };
 
          };
 

-         drawWay.off = function (surface) {
-           if (!_didResolveTempEdit) {
-             // Drawing was interrupted unexpectedly.
-             // This can happen if the user changes modes,
-             // clicks geolocate button, a hashchange event occurs, etc.
-             context.pauseChangeDispatch();
-             resetToStartGraph();
-             context.resumeChangeDispatch();
-           }
+         validation.type = type;
+         return validation;
+       }

 
 

-           _drawNode = undefined;
-           _nodeIndex = undefined;
-           context.map().on('drawn.draw', null);
-           surface.call(behavior.off).selectAll('.active').classed('active', false);
-           surface.classed('nope', false).classed('nope-suppressed', false).classed('nope-disabled', false);
-           select(window).on('keydown.drawWay', null).on('keyup.drawWay', null);
-           context.history().on('undone.draw', null);
-         };
+       function validationOutdatedTags() {
+         var type = 'outdated_tags';
+         var _waitingForDeprecated = true;

 
 

-         function attemptAdd(d, loc, doAdd) {
-           if (_drawNode) {
-             // move the node to the final loc in case move wasn't called
-             // consistently (e.g. on touch devices)
-             context.replace(actionMoveNode(_drawNode.id, loc), _annotation);
-             _drawNode = context.entity(_drawNode.id);
-           } else {
-             createDrawNode(loc);
-           }
+         var _dataDeprecated; // fetch deprecated tags

 
 

-           checkGeometry(true
-           /* includeDrawNode */
-           );

 
 

-           if (d && d.properties && d.properties.nope || context.surface().classed('nope')) {
-             if (!_pointerHasMoved) {
-               // prevent the temporary draw node from appearing on touch devices
-               removeDrawNode();
-             }
+         _mainFileFetcher.get('deprecated').then(function (d) {
+           return _dataDeprecated = d;
+         })["catch"](function () {
+           /* ignore */
+         })["finally"](function () {
+           return _waitingForDeprecated = false;
+         });

 
 

-             dispatch$1.call('rejectedSelfIntersection', this);
-             return; // can't click here
-           }
+         function oldTagIssues(entity, graph) {
+           var oldTags = Object.assign({}, entity.tags); // shallow copy

 
 

-           context.pauseChangeDispatch();
-           doAdd(); // we just replaced the temporary edit with the real one
+           var preset = _mainPresetIndex.match(entity, graph);
+           var subtype = 'deprecated_tags';
+           if (!preset) return [];
+           if (!entity.hasInterestingTags()) return []; // Upgrade preset, if a replacement is available..

 
 

-           _didResolveTempEdit = true;
-           context.resumeChangeDispatch();
-           context.enter(mode);
-         } // Accept the current position of the drawing node
+           if (preset.replacement) {
+             var newPreset = _mainPresetIndex.item(preset.replacement);
+             graph = actionChangePreset(entity.id, preset, newPreset, true
+             /* skip field defaults */
+             )(graph);
+             entity = graph.entity(entity.id);
+             preset = newPreset;
+           } // Upgrade deprecated tags..

 
 
 
 

-         drawWay.add = function (loc, d) {
-           attemptAdd(d, loc, function () {// don't need to do anything extra
-           });
-         }; // Connect the way to an existing way
+           if (_dataDeprecated) {
+             var deprecatedTags = entity.deprecatedTags(_dataDeprecated);

 
 

+             if (deprecatedTags.length) {
+               deprecatedTags.forEach(function (tag) {
+                 graph = actionUpgradeTags(entity.id, tag.old, tag.replace)(graph);
+               });
+               entity = graph.entity(entity.id);
+             }
+           } // Add missing addTags from the detected preset

 
 

-         drawWay.addWay = function (loc, edge, d) {
-           attemptAdd(d, loc, function () {
-             context.replace(actionAddMidpoint({
-               loc: loc,
-               edge: edge
-             }, _drawNode), _annotation);
-           });
-         }; // Connect the way to an existing node

 
 

+           var newTags = Object.assign({}, entity.tags); // shallow copy

 
 

-         drawWay.addNode = function (node, d) {
-           // finish drawing if the mapper targets the prior node
-           if (node.id === _headNodeID || // or the first node when drawing an area
-           _origWay.isClosed() && node.id === _origWay.first()) {
-             drawWay.finish();
-             return;
-           }
+           if (preset.tags !== preset.addTags) {
+             Object.keys(preset.addTags).forEach(function (k) {
+               if (!newTags[k]) {
+                 if (preset.addTags[k] === '*') {
+                   newTags[k] = 'yes';
+                 } else {
+                   newTags[k] = preset.addTags[k];
+                 }
+               }
+             });
+           } // Attempt to match a canonical record in the name-suggestion-index.

 
 

-           attemptAdd(d, node.loc, function () {
-             context.replace(function actionReplaceDrawNode(graph) {
-               // remove the temporary draw node and insert the existing node
-               // at the same index
-               graph = graph.replace(graph.entity(wayID).removeNode(_drawNode.id)).remove(_drawNode);
-               return graph.replace(graph.entity(wayID).addNode(node.id, _nodeIndex));
-             }, _annotation);
-           });
-         }; // Finish the draw operation, removing the temporary edit.
-         // If the way has enough nodes to be valid, it's selected.
-         // Otherwise, delete everything and return to browse mode.

 
 

+           var nsi = services.nsi;
+           var waitingForNsi = false;
+           var nsiResult;

 
 

-         drawWay.finish = function () {
-           checkGeometry(false
-           /* includeDrawNode */
-           );
+           if (nsi) {
+             waitingForNsi = nsi.status() === 'loading';

 
 

-           if (context.surface().classed('nope')) {
-             dispatch$1.call('rejectedSelfIntersection', this);
-             return; // can't click here
+             if (!waitingForNsi) {
+               var loc = entity.extent(graph).center();
+               nsiResult = nsi.upgradeTags(newTags, loc);
+
+               if (nsiResult) {
+                 newTags = nsiResult.newTags;
+                 subtype = 'noncanonical_brand';
+               }
+             }

            }
 
            }
 

-           context.pauseChangeDispatch(); // remove the temporary edit
+           var issues = [];
+           issues.provisional = _waitingForDeprecated || waitingForNsi; // determine diff

 
 

-           context.pop(1);
-           _didResolveTempEdit = true;
-           context.resumeChangeDispatch();
-           var way = context.hasEntity(wayID);
+           var tagDiff = utilTagDiff(oldTags, newTags);
+           if (!tagDiff.length) return issues;
+           var isOnlyAddingTags = tagDiff.every(function (d) {
+             return d.type === '+';
+           });
+           var prefix = '';

 
 

-           if (!way || way.isDegenerate()) {
-             drawWay.cancel();
-             return;
-           }
+           if (nsiResult) {
+             prefix = 'noncanonical_brand.';
+           } else if (subtype === 'deprecated_tags' && isOnlyAddingTags) {
+             subtype = 'incomplete_tags';
+             prefix = 'incomplete.';
+           } // don't allow autofixing brand tags

 
 

-           window.setTimeout(function () {
-             context.map().dblclickZoomEnable(true);
-           }, 1000);
-           var isNewFeature = !mode.isContinuing;
-           context.enter(modeSelect(context, [wayID]).newFeature(isNewFeature));
-         }; // Cancel the draw operation, delete everything, and return to browse mode.

 
 

+           var autoArgs = subtype !== 'noncanonical_brand' ? [doUpgrade, _t('issues.fix.upgrade_tags.annotation')] : null;
+           issues.push(new validationIssue({
+             type: type,
+             subtype: subtype,
+             severity: 'warning',
+             message: showMessage,
+             reference: showReference,
+             entityIds: [entity.id],
+             hash: utilHashcode(JSON.stringify(tagDiff)),
+             dynamicFixes: function dynamicFixes() {
+               var fixes = [new validationIssueFix({
+                 autoArgs: autoArgs,
+                 title: _t.html('issues.fix.upgrade_tags.title'),
+                 onClick: function onClick(context) {
+                   context.perform(doUpgrade, _t('issues.fix.upgrade_tags.annotation'));
+                 }
+               })];
+               var item = nsiResult && nsiResult.matched;

 
 

-         drawWay.cancel = function () {
-           context.pauseChangeDispatch();
-           resetToStartGraph();
-           context.resumeChangeDispatch();
-           window.setTimeout(function () {
-             context.map().dblclickZoomEnable(true);
-           }, 1000);
-           context.surface().classed('nope', false).classed('nope-disabled', false).classed('nope-suppressed', false);
-           context.enter(modeBrowse(context));
-         };
+               if (item) {
+                 fixes.push(new validationIssueFix({
+                   title: _t.html('issues.fix.tag_as_not.title', {
+                     name: item.displayName
+                   }),
+                   onClick: function onClick(context) {
+                     context.perform(addNotTag, _t('issues.fix.tag_as_not.annotation'));
+                   }
+                 }));
+               }

 
 

-         drawWay.nodeIndex = function (val) {
-           if (!arguments.length) return _nodeIndex;
-           _nodeIndex = val;
-           return drawWay;
-         };
+               return fixes;
+             }
+           }));
+           return issues;

 
 

-         drawWay.activeID = function () {
-           if (!arguments.length) return _drawNode && _drawNode.id; // no assign
+           function doUpgrade(graph) {
+             var currEntity = graph.hasEntity(entity.id);
+             if (!currEntity) return graph;
+             var newTags = Object.assign({}, currEntity.tags); // shallow copy

 
 

-           return drawWay;
-         };
+             tagDiff.forEach(function (diff) {
+               if (diff.type === '-') {
+                 delete newTags[diff.key];
+               } else if (diff.type === '+') {
+                 newTags[diff.key] = diff.newVal;
+               }
+             });
+             return actionChangeTags(currEntity.id, newTags)(graph);
+           }

 
 

-         return utilRebind(drawWay, dispatch$1, 'on');
-       }
+           function addNotTag(graph) {
+             var currEntity = graph.hasEntity(entity.id);
+             if (!currEntity) return graph;
+             var item = nsiResult && nsiResult.matched;
+             if (!item) return graph;
+             var newTags = Object.assign({}, currEntity.tags); // shallow copy

 
 

-       function modeDrawLine(context, wayID, startGraph, button, affix, continuing) {
-         var mode = {
-           button: button,
-           id: 'draw-line'
-         };
-         var behavior = behaviorDrawWay(context, wayID, mode, startGraph).on('rejectedSelfIntersection.modeDrawLine', function () {
-           context.ui().flash.iconName('#iD-icon-no').label(_t('self_intersection.error.lines'))();
-         });
-         mode.wayID = wayID;
-         mode.isContinuing = continuing;
+             var wd = item.mainTag; // e.g. `brand:wikidata`

 
 

-         mode.enter = function () {
-           behavior.nodeIndex(affix === 'prefix' ? 0 : undefined);
-           context.install(behavior);
-         };
+             var notwd = "not:".concat(wd); // e.g. `not:brand:wikidata`

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+             var qid = item.tags[wd];
+             newTags[notwd] = qid;

 
 

-         mode.selectedIDs = function () {
-           return [wayID];
-         };
+             if (newTags[wd] === qid) {
+               // if `brand:wikidata` was set to that qid
+               var wp = item.mainTag.replace('wikidata', 'wikipedia');
+               delete newTags[wd]; // remove `brand:wikidata`

 
 

-         mode.activeID = function () {
-           return behavior && behavior.activeID() || [];
-         };
+               delete newTags[wp]; // remove `brand:wikipedia`
+             }

 
 

-         return mode;
-       }
+             return actionChangeTags(currEntity.id, newTags)(graph);
+           }

 
 

-       function operationContinue(context, selectedIDs) {
-         var _entities = selectedIDs.map(function (id) {
-           return context.graph().entity(id);
-         });
+           function showMessage(context) {
+             var currEntity = context.hasEntity(entity.id);
+             if (!currEntity) return '';
+             var messageID = "issues.outdated_tags.".concat(prefix, "message");

 
 

-         var _geometries = Object.assign({
-           line: [],
-           vertex: []
-         }, utilArrayGroupBy(_entities, function (entity) {
-           return entity.geometry(context.graph());
-         }));
+             if (subtype === 'noncanonical_brand' && isOnlyAddingTags) {
+               messageID += '_incomplete';
+             }

 
 

-         var _vertex = _geometries.vertex.length && _geometries.vertex[0];
+             return _t.html(messageID, {
+               feature: utilDisplayLabel(currEntity, context.graph(), true
+               /* verbose */
+               )
+             });
+           }

 
 

-         function candidateWays() {
-           return _vertex ? context.graph().parentWays(_vertex).filter(function (parent) {
-             return parent.geometry(context.graph()) === 'line' && !parent.isClosed() && parent.affix(_vertex.id) && (_geometries.line.length === 0 || _geometries.line[0] === parent);
-           }) : [];
+           function showReference(selection) {
+             var enter = selection.selectAll('.issue-reference').data([0]).enter();
+             enter.append('div').attr('class', 'issue-reference').html(_t.html("issues.outdated_tags.".concat(prefix, "reference")));
+             enter.append('strong').html(_t.html('issues.suggested'));
+             enter.append('table').attr('class', 'tagDiff-table').selectAll('.tagDiff-row').data(tagDiff).enter().append('tr').attr('class', 'tagDiff-row').append('td').attr('class', function (d) {
+               var klass = d.type === '+' ? 'add' : 'remove';
+               return "tagDiff-cell tagDiff-cell-".concat(klass);
+             }).html(function (d) {
+               return d.display;
+             });
+           }

          }
 
          }
 

-         var _candidates = candidateWays();
-
-         var operation = function operation() {
-           var candidate = _candidates[0];
-           context.enter(modeDrawLine(context, candidate.id, context.graph(), 'line', candidate.affix(_vertex.id), true));
-         };
+         function oldMultipolygonIssues(entity, graph) {
+           var multipolygon, outerWay;

 
 

-         operation.relatedEntityIds = function () {
-           return _candidates.length ? [_candidates[0].id] : [];
-         };
+           if (entity.type === 'relation') {
+             outerWay = osmOldMultipolygonOuterMemberOfRelation(entity, graph);
+             multipolygon = entity;
+           } else if (entity.type === 'way') {
+             multipolygon = osmIsOldMultipolygonOuterMember(entity, graph);
+             outerWay = entity;
+           } else {
+             return [];
+           }

 
 

-         operation.available = function () {
-           return _geometries.vertex.length === 1 && _geometries.line.length <= 1 && !context.features().hasHiddenConnections(_vertex, context.graph());
-         };
+           if (!multipolygon || !outerWay) return [];
+           return [new validationIssue({
+             type: type,
+             subtype: 'old_multipolygon',
+             severity: 'warning',
+             message: showMessage,
+             reference: showReference,
+             entityIds: [outerWay.id, multipolygon.id],
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 autoArgs: [doUpgrade, _t('issues.fix.move_tags.annotation')],
+                 title: _t.html('issues.fix.move_tags.title'),
+                 onClick: function onClick(context) {
+                   context.perform(doUpgrade, _t('issues.fix.move_tags.annotation'));
+                 }
+               })];
+             }
+           })];

 
 

-         operation.disabled = function () {
-           if (_candidates.length === 0) {
-             return 'not_eligible';
-           } else if (_candidates.length > 1) {
-             return 'multiple';
+           function doUpgrade(graph) {
+             var currMultipolygon = graph.hasEntity(multipolygon.id);
+             var currOuterWay = graph.hasEntity(outerWay.id);
+             if (!currMultipolygon || !currOuterWay) return graph;
+             currMultipolygon = currMultipolygon.mergeTags(currOuterWay.tags);
+             graph = graph.replace(currMultipolygon);
+             return actionChangeTags(currOuterWay.id, {})(graph);

            }
 
            }
 

-           return false;
-         };
+           function showMessage(context) {
+             var currMultipolygon = context.hasEntity(multipolygon.id);
+             if (!currMultipolygon) return '';
+             return _t.html('issues.old_multipolygon.message', {
+               multipolygon: utilDisplayLabel(currMultipolygon, context.graph(), true
+               /* verbose */
+               )
+             });
+           }

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.continue.' + disable) : _t('operations.continue.description');
-         };
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.old_multipolygon.reference'));
+           }
+         }

 
 

-         operation.annotation = function () {
-           return _t('operations.continue.annotation.line');
+         var validation = function checkOutdatedTags(entity, graph) {
+           var issues = oldMultipolygonIssues(entity, graph);
+           if (!issues.length) issues = oldTagIssues(entity, graph);
+           return issues;

          };
 
          };
 

-         operation.id = 'continue';
-         operation.keys = [_t('operations.continue.key')];
-         operation.title = _t('operations.continue.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
+         validation.type = type;
+         return validation;

        }
 
        }
 

-       function operationCopy(context, selectedIDs) {
-         function getFilteredIdsToCopy() {
-           return selectedIDs.filter(function (selectedID) {
-             var entity = context.graph().hasEntity(selectedID); // don't copy untagged vertices separately from ways
+       function validationPrivateData() {
+         var type = 'private_data'; // assume that some buildings are private

 
 

-             return entity.hasInterestingTags() || entity.geometry(context.graph()) !== 'vertex';
-           });
-         }
+         var privateBuildingValues = {
+           detached: true,
+           farm: true,
+           house: true,
+           houseboat: true,
+           residential: true,
+           semidetached_house: true,
+           static_caravan: true
+         }; // but they might be public if they have one of these other tags

 
 

-         var operation = function operation() {
-           var graph = context.graph();
-           var selected = groupEntities(getFilteredIdsToCopy(), graph);
-           var canCopy = [];
-           var skip = {};
-           var entity;
-           var i;
+         var publicKeys = {
+           amenity: true,
+           craft: true,
+           historic: true,
+           leisure: true,
+           office: true,
+           shop: true,
+           tourism: true
+         }; // these tags may contain personally identifying info

 
 

-           for (i = 0; i < selected.relation.length; i++) {
-             entity = selected.relation[i];
+         var personalTags = {
+           'contact:email': true,
+           'contact:fax': true,
+           'contact:phone': true,
+           email: true,
+           fax: true,
+           phone: true
+         };

 
 

-             if (!skip[entity.id] && entity.isComplete(graph)) {
-               canCopy.push(entity.id);
-               skip = getDescendants(entity.id, graph, skip);
-             }
-           }
+         var validation = function checkPrivateData(entity) {
+           var tags = entity.tags;
+           if (!tags.building || !privateBuildingValues[tags.building]) return [];
+           var keepTags = {};

 
 

-           for (i = 0; i < selected.way.length; i++) {
-             entity = selected.way[i];
+           for (var k in tags) {
+             if (publicKeys[k]) return []; // probably a public feature

 
 

-             if (!skip[entity.id]) {
-               canCopy.push(entity.id);
-               skip = getDescendants(entity.id, graph, skip);
+             if (!personalTags[k]) {
+               keepTags[k] = tags[k];

              }
            }
 
              }
            }
 

-           for (i = 0; i < selected.node.length; i++) {
-             entity = selected.node[i];
-
-             if (!skip[entity.id]) {
-               canCopy.push(entity.id);
+           var tagDiff = utilTagDiff(tags, keepTags);
+           if (!tagDiff.length) return [];
+           var fixID = tagDiff.length === 1 ? 'remove_tag' : 'remove_tags';
+           return [new validationIssue({
+             type: type,
+             severity: 'warning',
+             message: showMessage,
+             reference: showReference,
+             entityIds: [entity.id],
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.' + fixID + '.title'),
+                 onClick: function onClick(context) {
+                   context.perform(doUpgrade, _t('issues.fix.upgrade_tags.annotation'));
+                 }
+               })];

              }
              }

-           }
-
-           context.copyIDs(canCopy);
-
-           if (_point && (canCopy.length !== 1 || graph.entity(canCopy[0]).type !== 'node')) {
-             // store the anchor coordinates if copying more than a single node
-             context.copyLonLat(context.projection.invert(_point));
-           } else {
-             context.copyLonLat(null);
-           }
-         };
-
-         function groupEntities(ids, graph) {
-           var entities = ids.map(function (id) {
-             return graph.entity(id);
-           });
-           return Object.assign({
-             relation: [],
-             way: [],
-             node: []
-           }, utilArrayGroupBy(entities, 'type'));
-         }
+           })];

 
 

-         function getDescendants(id, graph, descendants) {
-           var entity = graph.entity(id);
-           var children;
-           descendants = descendants || {};
+           function doUpgrade(graph) {
+             var currEntity = graph.hasEntity(entity.id);
+             if (!currEntity) return graph;
+             var newTags = Object.assign({}, currEntity.tags); // shallow copy

 
 

-           if (entity.type === 'relation') {
-             children = entity.members.map(function (m) {
-               return m.id;
+             tagDiff.forEach(function (diff) {
+               if (diff.type === '-') {
+                 delete newTags[diff.key];
+               } else if (diff.type === '+') {
+                 newTags[diff.key] = diff.newVal;
+               }

              });
              });

-           } else if (entity.type === 'way') {
-             children = entity.nodes;
-           } else {
-             children = [];
+             return actionChangeTags(currEntity.id, newTags)(graph);

            }
 
            }
 

-           for (var i = 0; i < children.length; i++) {
-             if (!descendants[children[i]]) {
-               descendants[children[i]] = true;
-               descendants = getDescendants(children[i], graph, descendants);
-             }
+           function showMessage(context) {
+             var currEntity = context.hasEntity(this.entityIds[0]);
+             if (!currEntity) return '';
+             return _t.html('issues.private_data.contact.message', {
+               feature: utilDisplayLabel(currEntity, context.graph())
+             });

            }
 
            }
 

-           return descendants;
-         }
-
-         operation.available = function () {
-           return getFilteredIdsToCopy().length > 0;
-         };
-
-         operation.disabled = function () {
-           var extent = utilTotalExtent(getFilteredIdsToCopy(), context.graph());
-
-           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
+           function showReference(selection) {
+             var enter = selection.selectAll('.issue-reference').data([0]).enter();
+             enter.append('div').attr('class', 'issue-reference').html(_t.html('issues.private_data.reference'));
+             enter.append('strong').html(_t.html('issues.suggested'));
+             enter.append('table').attr('class', 'tagDiff-table').selectAll('.tagDiff-row').data(tagDiff).enter().append('tr').attr('class', 'tagDiff-row').append('td').attr('class', function (d) {
+               var klass = d.type === '+' ? 'add' : 'remove';
+               return 'tagDiff-cell tagDiff-cell-' + klass;
+             }).html(function (d) {
+               return d.display;
+             });

            }
            }

-
-           return false;

          };
 
          };
 

-         operation.availableForKeypress = function () {
-           var selection = window.getSelection && window.getSelection(); // if the user has text selected then let them copy that, not the selected feature
-
-           return !selection || !selection.toString();
-         };
+         validation.type = type;
+         return validation;
+       }

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.copy.' + disable, {
-             n: selectedIDs.length
-           }) : _t('operations.copy.description', {
-             n: selectedIDs.length
-           });
-         };
+       function validationSuspiciousName() {
+         var type = 'suspicious_name';
+         var keysToTestForGenericValues = ['aerialway', 'aeroway', 'amenity', 'building', 'craft', 'highway', 'leisure', 'railway', 'man_made', 'office', 'shop', 'tourism', 'waterway'];
+         var _waitingForNsi = false; // Attempt to match a generic record in the name-suggestion-index.

 
 

-         operation.annotation = function () {
-           return _t('operations.copy.annotation', {
-             n: selectedIDs.length
-           });
-         };
+         function isGenericMatchInNsi(tags) {
+           var nsi = services.nsi;

 
 

-         var _point;
+           if (nsi) {
+             _waitingForNsi = nsi.status() === 'loading';

 
 

-         operation.point = function (val) {
-           _point = val;
-           return operation;
-         };
+             if (!_waitingForNsi) {
+               return nsi.isGenericName(tags);
+             }
+           }

 
 

-         operation.id = 'copy';
-         operation.keys = [uiCmd('⌘C')];
-         operation.title = _t('operations.copy.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+           return false;
+         } // Test if the name is just the key or tag value (e.g. "park")

 
 

-       function operationDisconnect(context, selectedIDs) {
-         var _vertexIDs = [];
-         var _wayIDs = [];
-         var _otherIDs = [];
-         var _actions = [];
-         selectedIDs.forEach(function (id) {
-           var entity = context.entity(id);

 
 

-           if (entity.type === 'way') {
-             _wayIDs.push(id);
-           } else if (entity.geometry(context.graph()) === 'vertex') {
-             _vertexIDs.push(id);
-           } else {
-             _otherIDs.push(id);
-           }
-         });
+         function nameMatchesRawTag(lowercaseName, tags) {
+           for (var i = 0; i < keysToTestForGenericValues.length; i++) {
+             var key = keysToTestForGenericValues[i];
+             var val = tags[key];

 
 

-         var _coords,
-             _descriptionID = '',
-             _annotationID = 'features';
+             if (val) {
+               val = val.toLowerCase();

 
 

-         var _disconnectingVertexIds = [];
-         var _disconnectingWayIds = [];
+               if (key === lowercaseName || val === lowercaseName || key.replace(/\_/g, ' ') === lowercaseName || val.replace(/\_/g, ' ') === lowercaseName) {
+                 return true;
+               }
+             }
+           }

 
 

-         if (_vertexIDs.length > 0) {
-           // At the selected vertices, disconnect the selected ways, if any, else
-           // disconnect all connected ways
-           _disconnectingVertexIds = _vertexIDs;
+           return false;
+         }

 
 

-           _vertexIDs.forEach(function (vertexID) {
-             var action = actionDisconnect(vertexID);
+         function isGenericName(name, tags) {
+           name = name.toLowerCase();
+           return nameMatchesRawTag(name, tags) || isGenericMatchInNsi(tags);
+         }

 
 

-             if (_wayIDs.length > 0) {
-               var waysIDsForVertex = _wayIDs.filter(function (wayID) {
-                 var way = context.entity(wayID);
-                 return way.nodes.indexOf(vertexID) !== -1;
+         function makeGenericNameIssue(entityId, nameKey, genericName, langCode) {
+           return new validationIssue({
+             type: type,
+             subtype: 'generic_name',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               if (!entity) return '';
+               var preset = _mainPresetIndex.match(entity, context.graph());
+               var langName = langCode && _mainLocalizer.languageName(langCode);
+               return _t.html('issues.generic_name.message' + (langName ? '_language' : ''), {
+                 feature: preset.name(),
+                 name: genericName,
+                 language: langName

                });
                });

+             },
+             reference: showReference,
+             entityIds: [entityId],
+             hash: "".concat(nameKey, "=").concat(genericName),
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.remove_the_name.title'),
+                 onClick: function onClick(context) {
+                   var entityId = this.issue.entityIds[0];
+                   var entity = context.entity(entityId);
+                   var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-               action.limitWays(waysIDsForVertex);
+                   delete tags[nameKey];
+                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_generic_name.annotation'));
+                 }
+               })];

              }
              }

+           });

 
 

-             _actions.push(action);
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));
+           }
+         }

 
 

-             _disconnectingWayIds = _disconnectingWayIds.concat(context.graph().parentWays(context.graph().entity(vertexID)).map(function (d) {
-               return d.id;
-             }));
-           });
+         function makeIncorrectNameIssue(entityId, nameKey, incorrectName, langCode) {
+           return new validationIssue({
+             type: type,
+             subtype: 'not_name',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               if (!entity) return '';
+               var preset = _mainPresetIndex.match(entity, context.graph());
+               var langName = langCode && _mainLocalizer.languageName(langCode);
+               return _t.html('issues.incorrect_name.message' + (langName ? '_language' : ''), {
+                 feature: preset.name(),
+                 name: incorrectName,
+                 language: langName
+               });
+             },
+             reference: showReference,
+             entityIds: [entityId],
+             hash: "".concat(nameKey, "=").concat(incorrectName),
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 icon: 'iD-operation-delete',
+                 title: _t.html('issues.fix.remove_the_name.title'),
+                 onClick: function onClick(context) {
+                   var entityId = this.issue.entityIds[0];
+                   var entity = context.entity(entityId);
+                   var tags = Object.assign({}, entity.tags); // shallow copy

 
 

-           _disconnectingWayIds = utilArrayUniq(_disconnectingWayIds).filter(function (id) {
-             return _wayIDs.indexOf(id) === -1;
+                   delete tags[nameKey];
+                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_mistaken_name.annotation'));
+                 }
+               })];
+             }

            });
            });

-           _descriptionID += _actions.length === 1 ? 'single_point.' : 'multiple_points.';

 
 

-           if (_wayIDs.length === 1) {
-             _descriptionID += 'single_way.' + context.graph().geometry(_wayIDs[0]);
-           } else {
-             _descriptionID += _wayIDs.length === 0 ? 'no_ways' : 'multiple_ways';
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));

            }
            }

-         } else if (_wayIDs.length > 0) {
-           // Disconnect the selected ways from each other, if they're connected,
-           // else disconnect them from all connected ways
-           var ways = _wayIDs.map(function (id) {
-             return context.entity(id);
-           });
-
-           var nodes = utilGetAllNodes(_wayIDs, context.graph());
-           _coords = nodes.map(function (n) {
-             return n.loc;
-           }); // actions for connected nodes shared by at least two selected ways
+         }

 
 

-           var sharedActions = [];
-           var sharedNodes = []; // actions for connected nodes
+         var validation = function checkGenericName(entity) {
+           var tags = entity.tags; // a generic name is allowed if it's a known brand or entity

 
 

-           var unsharedActions = [];
-           var unsharedNodes = [];
-           nodes.forEach(function (node) {
-             var action = actionDisconnect(node.id).limitWays(_wayIDs);
+           var hasWikidata = !!tags.wikidata || !!tags['brand:wikidata'] || !!tags['operator:wikidata'];
+           if (hasWikidata) return [];
+           var issues = [];
+           var notNames = (tags['not:name'] || '').split(';');

 
 

-             if (action.disabled(context.graph()) !== 'not_connected') {
-               var count = 0;
+           for (var key in tags) {
+             var m = key.match(/^name(?:(?::)([a-zA-Z_-]+))?$/);
+             if (!m) continue;
+             var langCode = m.length >= 2 ? m[1] : null;
+             var value = tags[key];

 
 

-               for (var i in ways) {
-                 var way = ways[i];
+             if (notNames.length) {
+               for (var i in notNames) {
+                 var notName = notNames[i];

 
 

-                 if (way.nodes.indexOf(node.id) !== -1) {
-                   count += 1;
+                 if (notName && value === notName) {
+                   issues.push(makeIncorrectNameIssue(entity.id, key, value, langCode));
+                   continue;

                  }
                  }

-
-                 if (count > 1) break;
-               }
-
-               if (count > 1) {
-                 sharedActions.push(action);
-                 sharedNodes.push(node);
-               } else {
-                 unsharedActions.push(action);
-                 unsharedNodes.push(node);

                }
              }
                }
              }

-           });
-           _descriptionID += 'no_points.';
-           _descriptionID += _wayIDs.length === 1 ? 'single_way.' : 'multiple_ways.';

 
 

-           if (sharedActions.length) {
-             // if any nodes are shared, only disconnect the selected ways from each other
-             _actions = sharedActions;
-             _disconnectingVertexIds = sharedNodes.map(function (node) {
-               return node.id;
-             });
-             _descriptionID += 'conjoined';
-             _annotationID = 'from_each_other';
-           } else {
-             // if no nodes are shared, disconnect the selected ways from all connected ways
-             _actions = unsharedActions;
-             _disconnectingVertexIds = unsharedNodes.map(function (node) {
-               return node.id;
-             });
+             if (isGenericName(value, tags)) {
+               issues.provisional = _waitingForNsi; // retry later if we are waiting on NSI to finish loading

 
 

-             if (_wayIDs.length === 1) {
-               _descriptionID += context.graph().geometry(_wayIDs[0]);
-             } else {
-               _descriptionID += 'separate';
+               issues.push(makeGenericNameIssue(entity.id, key, value, langCode));

              }
            }
              }
            }

-         }

 
 

-         var _extent = utilTotalExtent(_disconnectingVertexIds, context.graph());
-
-         var operation = function operation() {
-           context.perform(function (graph) {
-             return _actions.reduce(function (graph, action) {
-               return action(graph);
-             }, graph);
-           }, operation.annotation());
-           context.validator().validate();
+           return issues;

          };
 
          };
 

-         operation.relatedEntityIds = function () {
-           if (_vertexIDs.length) {
-             return _disconnectingWayIds;
-           }
+         validation.type = type;
+         return validation;
+       }

 
 

-           return _disconnectingVertexIds;
-         };
+       function validationUnsquareWay(context) {
+         var type = 'unsquare_way';
+         var DEFAULT_DEG_THRESHOLD = 5; // see also issues.js
+         // use looser epsilon for detection to reduce warnings of buildings that are essentially square already

 
 

-         operation.available = function () {
-           if (_actions.length === 0) return false;
-           if (_otherIDs.length !== 0) return false;
-           if (_vertexIDs.length !== 0 && _wayIDs.length !== 0 && !_wayIDs.every(function (wayID) {
-             return _vertexIDs.some(function (vertexID) {
-               var way = context.entity(wayID);
-               return way.nodes.indexOf(vertexID) !== -1;
-             });
-           })) return false;
-           return true;
-         };
+         var epsilon = 0.05;
+         var nodeThreshold = 10;

 
 

-         operation.disabled = function () {
-           var reason;
+         function isBuilding(entity, graph) {
+           if (entity.type !== 'way' || entity.geometry(graph) !== 'area') return false;
+           return entity.tags.building && entity.tags.building !== 'no';
+         }

 
 

-           for (var actionIndex in _actions) {
-             reason = _actions[actionIndex].disabled(context.graph());
-             if (reason) return reason;
-           }
+         var validation = function checkUnsquareWay(entity, graph) {
+           if (!isBuilding(entity, graph)) return []; // don't flag ways marked as physically unsquare

 
 

-           if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large.' + ((_vertexIDs.length ? _vertexIDs : _wayIDs).length === 1 ? 'single' : 'multiple');
-           } else if (_coords && someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           }
+           if (entity.tags.nonsquare === 'yes') return [];
+           var isClosed = entity.isClosed();
+           if (!isClosed) return []; // this building has bigger problems
+           // don't flag ways with lots of nodes since they are likely detail-mapped

 
 

-           return false;
+           var nodes = graph.childNodes(entity).slice(); // shallow copy

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+           if (nodes.length > nodeThreshold + 1) return []; // +1 because closing node appears twice
+           // ignore if not all nodes are fully downloaded

 
 

-             if (osm) {
-               var missing = _coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });
+           var osm = services.osm;
+           if (!osm || nodes.some(function (node) {
+             return !osm.isDataLoaded(node.loc);
+           })) return []; // don't flag connected ways to avoid unresolvable unsquare loops

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
-               }
-             }
+           var hasConnectedSquarableWays = nodes.some(function (node) {
+             return graph.parentWays(node).some(function (way) {
+               if (way.id === entity.id) return false;
+               if (isBuilding(way, graph)) return true;
+               return graph.parentRelations(way).some(function (parentRelation) {
+                 return parentRelation.isMultipolygon() && parentRelation.tags.building && parentRelation.tags.building !== 'no';
+               });
+             });
+           });
+           if (hasConnectedSquarableWays) return []; // user-configurable square threshold

 
 

-             return false;
-           }
-         };
+           var storedDegreeThreshold = corePreferences('validate-square-degrees');
+           var degreeThreshold = isNaN(storedDegreeThreshold) ? DEFAULT_DEG_THRESHOLD : parseFloat(storedDegreeThreshold);
+           var points = nodes.map(function (node) {
+             return context.projection(node.loc);
+           });
+           if (!geoOrthoCanOrthogonalize(points, isClosed, epsilon, degreeThreshold, true)) return [];
+           var autoArgs; // don't allow autosquaring features linked to wikidata

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
+           if (!entity.tags.wikidata) {
+             // use same degree threshold as for detection
+             var autoAction = actionOrthogonalize(entity.id, context.projection, undefined, degreeThreshold);
+             autoAction.transitionable = false; // when autofixing, do it instantly

 
 

-           if (disable) {
-             return _t('operations.disconnect.' + disable);
+             autoArgs = [autoAction, _t('operations.orthogonalize.annotation.feature', {
+               n: 1
+             })];

            }
 
            }
 

-           return _t('operations.disconnect.description.' + _descriptionID);
-         };
-
-         operation.annotation = function () {
-           return _t('operations.disconnect.annotation.' + _annotationID);
-         };
-
-         operation.id = 'disconnect';
-         operation.keys = [_t('operations.disconnect.key')];
-         operation.title = _t('operations.disconnect.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
-
-       function operationDowngrade(context, selectedIDs) {
-         var _affectedFeatureCount = 0;
-
-         var _downgradeType = downgradeTypeForEntityIDs(selectedIDs);
-
-         var _multi = _affectedFeatureCount === 1 ? 'single' : 'multiple';
-
-         function downgradeTypeForEntityIDs(entityIds) {
-           var downgradeType;
-           _affectedFeatureCount = 0;
-
-           for (var i in entityIds) {
-             var entityID = entityIds[i];
-             var type = downgradeTypeForEntityID(entityID);
+           return [new validationIssue({
+             type: type,
+             subtype: 'building',
+             severity: 'warning',
+             message: function message(context) {
+               var entity = context.hasEntity(this.entityIds[0]);
+               return entity ? _t.html('issues.unsquare_way.message', {
+                 feature: utilDisplayLabel(entity, context.graph())
+               }) : '';
+             },
+             reference: showReference,
+             entityIds: [entity.id],
+             hash: degreeThreshold,
+             dynamicFixes: function dynamicFixes() {
+               return [new validationIssueFix({
+                 icon: 'iD-operation-orthogonalize',
+                 title: _t.html('issues.fix.square_feature.title'),
+                 autoArgs: autoArgs,
+                 onClick: function onClick(context, completionHandler) {
+                   var entityId = this.issue.entityIds[0]; // use same degree threshold as for detection

 
 

-             if (type) {
-               _affectedFeatureCount += 1;
+                   context.perform(actionOrthogonalize(entityId, context.projection, undefined, degreeThreshold), _t('operations.orthogonalize.annotation.feature', {
+                     n: 1
+                   })); // run after the squaring transition (currently 150ms)

 
 

-               if (downgradeType && type !== downgradeType) {
-                 if (downgradeType !== 'generic' && type !== 'generic') {
-                   downgradeType = 'building_address';
-                 } else {
-                   downgradeType = 'generic';
+                   window.setTimeout(function () {
+                     completionHandler();
+                   }, 175);

                  }
                  }

-               } else {
-                 downgradeType = type;
-               }
+               })
+               /*
+               new validationIssueFix({
+                   title: t.html('issues.fix.tag_as_unsquare.title'),
+                   onClick: function(context) {
+                       var entityId = this.issue.entityIds[0];
+                       var entity = context.entity(entityId);
+                       var tags = Object.assign({}, entity.tags);  // shallow copy
+                       tags.nonsquare = 'yes';
+                       context.perform(
+                           actionChangeTags(entityId, tags),
+                           t('issues.fix.tag_as_unsquare.annotation')
+                       );
+                   }
+               })
+               */
+               ];

              }
              }

+           })];
+
+           function showReference(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unsquare_way.buildings.reference'));

            }
            }

+         };

 
 

-           return downgradeType;
-         }
+         validation.type = type;
+         return validation;
+       }

 
 

-         function downgradeTypeForEntityID(entityID) {
-           var graph = context.graph();
-           var entity = graph.entity(entityID);
-           var preset = _mainPresetIndex.match(entity, graph);
-           if (!preset || preset.isFallback()) return null;
+       var Validations = /*#__PURE__*/Object.freeze({
+               __proto__: null,
+               validationAlmostJunction: validationAlmostJunction,
+               validationCloseNodes: validationCloseNodes,
+               validationCrossingWays: validationCrossingWays,
+               validationDisconnectedWay: validationDisconnectedWay,
+               validationFormatting: validationFormatting,
+               validationHelpRequest: validationHelpRequest,
+               validationImpossibleOneway: validationImpossibleOneway,
+               validationIncompatibleSource: validationIncompatibleSource,
+               validationMaprules: validationMaprules,
+               validationMismatchedGeometry: validationMismatchedGeometry,
+               validationMissingRole: validationMissingRole,
+               validationMissingTag: validationMissingTag,
+               validationOutdatedTags: validationOutdatedTags,
+               validationPrivateData: validationPrivateData,
+               validationSuspiciousName: validationSuspiciousName,
+               validationUnsquareWay: validationUnsquareWay
+       });
+
+       function coreValidator(context) {
+         var _this = this;

 
 

-           if (entity.type === 'node' && preset.id !== 'address' && Object.keys(entity.tags).some(function (key) {
-             return key.match(/^addr:.{1,}/);
-           })) {
-             return 'address';
-           }
+         var dispatch = dispatch$8('validated', 'focusedIssue');
+         var validator = utilRebind({}, dispatch, 'on');
+         var _rules = {};
+         var _disabledRules = {};

 
 

-           var geometry = entity.geometry(graph);
+         var _ignoredIssueIDs = new Set();

 
 

-           if (geometry === 'area' && entity.tags.building && !preset.tags.building) {
-             return 'building';
-           }
+         var _resolvedIssueIDs = new Set();

 
 

-           if (geometry === 'vertex' && Object.keys(entity.tags).length) {
-             return 'generic';
-           }
+         var _baseCache = validationCache('base'); // issues before any user edits

 
 

-           return null;
-         }

 
 

-         var buildingKeysToKeep = ['architect', 'building', 'height', 'layer', 'source', 'type', 'wheelchair'];
-         var addressKeysToKeep = ['source'];
+         var _headCache = validationCache('head'); // issues after all user edits

 
 

-         var operation = function operation() {
-           context.perform(function (graph) {
-             for (var i in selectedIDs) {
-               var entityID = selectedIDs[i];
-               var type = downgradeTypeForEntityID(entityID);
-               if (!type) continue;
-               var tags = Object.assign({}, graph.entity(entityID).tags); // shallow copy

 
 

-               for (var key in tags) {
-                 if (type === 'address' && addressKeysToKeep.indexOf(key) !== -1) continue;
+         var _completeDiff = {}; // complete diff base -> head of what the user changed

 
 

-                 if (type === 'building') {
-                   if (buildingKeysToKeep.indexOf(key) !== -1 || key.match(/^building:.{1,}/) || key.match(/^roof:.{1,}/)) continue;
-                 }
+         var _headIsCurrent = false;

 
 

-                 if (type !== 'generic' && key.match(/^addr:.{1,}/)) continue;
-                 delete tags[key];
-               }
+         var _deferredRIC = new Set(); // Set( RequestIdleCallback handles )

 
 

-               graph = actionChangeTags(entityID, tags)(graph);
-             }

 
 

-             return graph;
-           }, operation.annotation());
-           context.validator().validate(); // refresh the select mode to enable the delete operation
+         var _deferredST = new Set(); // Set( SetTimeout handles )

 
 

-           context.enter(modeSelect(context, selectedIDs));
-         };

 
 

-         operation.available = function () {
-           return _downgradeType;
-         };
+         var _headPromise; // Promise fulfilled when validation is performed up to headGraph snapshot

 
 

-         operation.disabled = function () {
-           if (selectedIDs.some(hasWikidataTag)) {
-             return 'has_wikidata_tag';
-           }

 
 

-           return false;
+         var RETRY = 5000; // wait 5sec before revalidating provisional entities
+         // Allow validation severity to be overridden by url queryparams...
+         // See: https://github.com/openstreetmap/iD/pull/8243
+         //
+         // Each param should contain a urlencoded comma separated list of
+         // `type/subtype` rules.  `*` may be used as a wildcard..
+         // Examples:
+         //  `validationError=disconnected_way/*`
+         //  `validationError=disconnected_way/highway`
+         //  `validationError=crossing_ways/bridge*`
+         //  `validationError=crossing_ways/bridge*,crossing_ways/tunnel*`
+
+         var _errorOverrides = parseHashParam(context.initialHashParams.validationError);
+
+         var _warningOverrides = parseHashParam(context.initialHashParams.validationWarning);
+
+         var _disableOverrides = parseHashParam(context.initialHashParams.validationDisable); // `parseHashParam()`   (private)
+         // Checks hash parameters for severity overrides
+         // Arguments
+         //   `param` - a url hash parameter (`validationError`, `validationWarning`, or `validationDisable`)
+         // Returns
+         //   Array of Objects like { type: RegExp, subtype: RegExp }
+         //

 
 

-           function hasWikidataTag(id) {
-             var entity = context.entity(id);
-             return entity.tags.wikidata && entity.tags.wikidata.trim().length > 0;
-           }
-         };

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.downgrade.' + disable + '.' + _multi) : _t('operations.downgrade.description.' + _downgradeType);
-         };
+         function parseHashParam(param) {
+           var result = [];
+           var rules = (param || '').split(',');
+           rules.forEach(function (rule) {
+             rule = rule.trim();
+             var parts = rule.split('/', 2); // "type/subtype"
+
+             var type = parts[0];
+             var subtype = parts[1] || '*';
+             if (!type || !subtype) return;
+             result.push({
+               type: makeRegExp(type),
+               subtype: makeRegExp(subtype)
+             });
+           });
+           return result;

 
 

-         operation.annotation = function () {
-           var suffix;
+           function makeRegExp(str) {
+             var escaped = str.replace(/[-\/\\^$+?.()|[\]{}]/g, '\\$&') // escape all reserved chars except for the '*'
+             .replace(/\*/g, '.*'); // treat a '*' like '.*'

 
 

-           if (_downgradeType === 'building_address') {
-             suffix = 'generic';
-           } else {
-             suffix = _downgradeType;
+             return new RegExp('^' + escaped + '$');

            }
            }

+         } // `init()`
+         // Initialize the validator, called once on iD startup
+         //

 
 

-           return _t('operations.downgrade.annotation.' + suffix, {
-             n: _affectedFeatureCount
+
+         validator.init = function () {
+           Object.values(Validations).forEach(function (validation) {
+             if (typeof validation !== 'function') return;
+             var fn = validation(context);
+             var key = fn.type;
+             _rules[key] = fn;

            });
            });

-         };
+           var disabledRules = corePreferences('validate-disabledRules');

 
 

-         operation.id = 'downgrade';
-         operation.keys = [uiCmd('⌫')];
-         operation.title = _t('operations.downgrade.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+           if (disabledRules) {
+             disabledRules.split(',').forEach(function (k) {
+               return _disabledRules[k] = true;
+             });
+           }
+         }; // `reset()`   (private)
+         // Cancels deferred work and resets all caches
+         //
+         // Arguments
+         //   `resetIgnored` - `true` to clear the list of user-ignored issues
+         //

 
 

-       function operationExtract(context, selectedIDs) {
-         var _amount = selectedIDs.length === 1 ? 'single' : 'multiple';

 
 

-         var _geometries = utilArrayUniq(selectedIDs.map(function (entityID) {
-           return context.graph().hasEntity(entityID) && context.graph().geometry(entityID);
-         }).filter(Boolean));
+         function reset(resetIgnored) {
+           // cancel deferred work
+           _deferredRIC.forEach(window.cancelIdleCallback);

 
 

-         var _geometryID = _geometries.length === 1 ? _geometries[0] : 'feature';
+           _deferredRIC.clear();

 
 

-         var _extent;
+           _deferredST.forEach(window.clearTimeout);

 
 

-         var _actions = selectedIDs.map(function (entityID) {
-           var graph = context.graph();
-           var entity = graph.hasEntity(entityID);
-           if (!entity || !entity.hasInterestingTags()) return null;
-           if (entity.type === 'node' && graph.parentWays(entity).length === 0) return null;
+           _deferredST.clear(); // empty queues and resolve any pending promise

 
 

-           if (entity.type !== 'node') {
-             var preset = _mainPresetIndex.match(entity, graph); // only allow extraction from ways/relations if the preset supports points

 
 

-             if (preset.geometry.indexOf('point') === -1) return null;
-           }
+           _baseCache.queue = [];
+           _headCache.queue = [];
+           processQueue(_headCache);
+           processQueue(_baseCache); // clear caches

 
 

-           _extent = _extent ? _extent.extend(entity.extent(graph)) : entity.extent(graph);
-           return actionExtract(entityID);
-         }).filter(Boolean);
+           if (resetIgnored) _ignoredIssueIDs.clear();

 
 

-         var operation = function operation() {
-           var combinedAction = function combinedAction(graph) {
-             _actions.forEach(function (action) {
-               graph = action(graph);
-             });
+           _resolvedIssueIDs.clear();

 
 

-             return graph;
-           };
+           _baseCache = validationCache('base');
+           _headCache = validationCache('head');
+           _completeDiff = {};
+           _headIsCurrent = false;
+         } // `reset()`
+         // clear caches, called whenever iD resets after a save or switches sources
+         // (clears out the _ignoredIssueIDs set also)
+         //

 
 

-           context.perform(combinedAction, operation.annotation()); // do the extract

 
 

-           var extractedNodeIDs = _actions.map(function (action) {
-             return action.getExtractedNodeID();
-           });
+         validator.reset = function () {
+           reset(true);
+         }; // `resetIgnoredIssues()`
+         // clears out the _ignoredIssueIDs Set
+         //

 
 

-           context.enter(modeSelect(context, extractedNodeIDs));
-         };

 
 

-         operation.available = function () {
-           return _actions.length && selectedIDs.length === _actions.length;
-         };
+         validator.resetIgnoredIssues = function () {
+           _ignoredIssueIDs.clear();

 
 

-         operation.disabled = function () {
-           if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (selectedIDs.some(function (entityID) {
-             return context.graph().geometry(entityID) === 'vertex' && context.hasHiddenConnections(entityID);
-           })) {
-             return 'connected_to_hidden';
-           }
+           dispatch.call('validated'); // redraw UI
+         }; // `revalidateUnsquare()`
+         // Called whenever the user changes the unsquare threshold
+         // It reruns just the "unsquare_way" validation on all buildings.
+         //

 
 

-           return false;
+
+         validator.revalidateUnsquare = function () {
+           revalidateUnsquare(_headCache);
+           revalidateUnsquare(_baseCache);
+           dispatch.call('validated');

          };
 
          };
 

-         operation.tooltip = function () {
-           var disableReason = operation.disabled();
+         function revalidateUnsquare(cache) {
+           var checkUnsquareWay = _rules.unsquare_way;
+           if (!cache.graph || typeof checkUnsquareWay !== 'function') return; // uncache existing

 
 

-           if (disableReason) {
-             return _t('operations.extract.' + disableReason + '.' + _amount);
-           } else {
-             return _t('operations.extract.description.' + _geometryID + '.' + _amount);
-           }
-         };
+           cache.uncacheIssuesOfType('unsquare_way');
+           var buildings = context.history().tree().intersects(geoExtent([-180, -90], [180, 90]), cache.graph) // everywhere
+           .filter(function (entity) {
+             return entity.type === 'way' && entity.tags.building && entity.tags.building !== 'no';
+           }); // rerun for all buildings

 
 

-         operation.annotation = function () {
-           return _t('operations.extract.annotation', {
-             n: selectedIDs.length
+           buildings.forEach(function (entity) {
+             var detected = checkUnsquareWay(entity, cache.graph);
+             if (!detected.length) return;
+             cache.cacheIssues(detected);

            });
            });

-         };
-
-         operation.id = 'extract';
-         operation.keys = [_t('operations.extract.key')];
-         operation.title = _t('operations.extract.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         } // `getIssues()`
+         // Gets all issues that match the given options
+         // This is called by many other places
+         //
+         // Arguments
+         //   `options` Object like:
+         //   {
+         //     what: 'all',                  // 'all' or 'edited'
+         //     where: 'all',                 // 'all' or 'visible'
+         //     includeIgnored: false,        // true, false, or 'only'
+         //     includeDisabledRules: false   // true, false, or 'only'
+         //   }
+         //
+         // Returns
+         //   An Array containing the issues
+         //

 
 

-       function operationMerge(context, selectedIDs) {
-         var _action = getAction();

 
 

-         function getAction() {
-           // prefer a non-disabled action first
-           var join = actionJoin(selectedIDs);
-           if (!join.disabled(context.graph())) return join;
-           var merge = actionMerge(selectedIDs);
-           if (!merge.disabled(context.graph())) return merge;
-           var mergePolygon = actionMergePolygon(selectedIDs);
-           if (!mergePolygon.disabled(context.graph())) return mergePolygon;
-           var mergeNodes = actionMergeNodes(selectedIDs);
-           if (!mergeNodes.disabled(context.graph())) return mergeNodes; // otherwise prefer an action with an interesting disabled reason
+         validator.getIssues = function (options) {
+           var opts = Object.assign({
+             what: 'all',
+             where: 'all',
+             includeIgnored: false,
+             includeDisabledRules: false
+           }, options);
+           var view = context.map().extent();
+           var seen = new Set();
+           var results = []; // collect head issues - present in the user edits
+
+           if (_headCache.graph && _headCache.graph !== _baseCache.graph) {
+             Object.values(_headCache.issuesByIssueID).forEach(function (issue) {
+               // In the head cache, only count features that the user is responsible for - #8632
+               // For example, a user can undo some work and an issue will still present in the
+               // head graph, but we don't want to credit the user for causing that issue.
+               var userModified = (issue.entityIds || []).some(function (id) {
+                 return _completeDiff.hasOwnProperty(id);
+               });
+               if (opts.what === 'edited' && !userModified) return; // present in head but user didn't touch it

 
 

-           if (join.disabled(context.graph()) !== 'not_eligible') return join;
-           if (merge.disabled(context.graph()) !== 'not_eligible') return merge;
-           if (mergePolygon.disabled(context.graph()) !== 'not_eligible') return mergePolygon;
-           return mergeNodes;
-         }
+               if (!filter(issue)) return;
+               seen.add(issue.id);
+               results.push(issue);
+             });
+           } // collect base issues - present before user edits

 
 

-         var operation = function operation() {
-           if (operation.disabled()) return;
-           context.perform(_action, operation.annotation());
-           context.validator().validate();
-           var resultIDs = selectedIDs.filter(context.hasEntity);

 
 

-           if (resultIDs.length > 1) {
-             var interestingIDs = resultIDs.filter(function (id) {
-               return context.entity(id).hasInterestingTags();
+           if (opts.what === 'all') {
+             Object.values(_baseCache.issuesByIssueID).forEach(function (issue) {
+               if (!filter(issue)) return;
+               seen.add(issue.id);
+               results.push(issue);

              });
              });

-             if (interestingIDs.length) resultIDs = interestingIDs;

            }
 
            }
 

-           context.enter(modeSelect(context, resultIDs));
-         };
+           return results; // Filter the issue set to include only what the calling code wants to see.
+           // Note that we use `context.graph()`/`context.hasEntity()` here, not `cache.graph`,
+           // because that is the graph that the calling code will be using.

 
 

-         operation.available = function () {
-           return selectedIDs.length >= 2;
-         };
+           function filter(issue) {
+             if (!issue) return false;
+             if (seen.has(issue.id)) return false;
+             if (_resolvedIssueIDs.has(issue.id)) return false;
+             if (opts.includeDisabledRules === 'only' && !_disabledRules[issue.type]) return false;
+             if (!opts.includeDisabledRules && _disabledRules[issue.type]) return false;
+             if (opts.includeIgnored === 'only' && !_ignoredIssueIDs.has(issue.id)) return false;
+             if (!opts.includeIgnored && _ignoredIssueIDs.has(issue.id)) return false; // This issue may involve an entity that doesn't exist in context.graph()
+             // This can happen because validation is async and rendering the issue lists is async.

 
 

-         operation.disabled = function () {
-           var actionDisabled = _action.disabled(context.graph());
+             if ((issue.entityIds || []).some(function (id) {
+               return !context.hasEntity(id);
+             })) return false;

 
 

-           if (actionDisabled) return actionDisabled;
-           var osm = context.connection();
+             if (opts.where === 'visible') {
+               var extent = issue.extent(context.graph());
+               if (!view.intersects(extent)) return false;
+             }

 
 

-           if (osm && _action.resultingWayNodesLength && _action.resultingWayNodesLength(context.graph()) > osm.maxWayNodes()) {
-             return 'too_many_vertices';
+             return true;

            }
            }

+         }; // `getResolvedIssues()`
+         // Gets the issues that have been fixed by the user.
+         //
+         // Resolved issues are tracked in the `_resolvedIssueIDs` Set,
+         // and they should all be issues that exist in the _baseCache.
+         //
+         // Returns
+         //   An Array containing the issues
+         //

 
 

-           return false;
-         };

 
 

-         operation.tooltip = function () {
-           var disabled = operation.disabled();
+         validator.getResolvedIssues = function () {
+           return Array.from(_resolvedIssueIDs).map(function (issueID) {
+             return _baseCache.issuesByIssueID[issueID];
+           }).filter(Boolean);
+         }; // `focusIssue()`
+         // Adjusts the map to focus on the given issue.
+         // (requires the issue to have a reasonable extent defined)
+         //
+         // Arguments
+         //   `issue` - the issue to focus on
+         //

 
 

-           if (disabled) {
-             if (disabled === 'restriction') {
-               return _t('operations.merge.restriction', {
-                 relation: _mainPresetIndex.item('type/restriction').name()
+
+         validator.focusIssue = function (issue) {
+           // Note that we use `context.graph()`/`context.hasEntity()` here, not `cache.graph`,
+           // because that is the graph that the calling code will be using.
+           var graph = context.graph();
+           var selectID;
+           var focusCenter; // Try to focus the map at the center of the issue..
+
+           var issueExtent = issue.extent(graph);
+
+           if (issueExtent) {
+             focusCenter = issueExtent.center();
+           } // Try to select the first entity in the issue..
+
+
+           if (issue.entityIds && issue.entityIds.length) {
+             selectID = issue.entityIds[0]; // If a relation, focus on one of its members instead.
+             // Otherwise we might be focusing on a part of map where the relation is not visible.
+
+             if (selectID && selectID.charAt(0) === 'r') {
+               // relation
+               var ids = utilEntityAndDeepMemberIDs([selectID], graph);
+               var nodeID = ids.find(function (id) {
+                 return id.charAt(0) === 'n' && graph.hasEntity(id);

                });
                });

+
+               if (!nodeID) {
+                 // relation has no downloaded nodes to focus on
+                 var wayID = ids.find(function (id) {
+                   return id.charAt(0) === 'w' && graph.hasEntity(id);
+                 });
+
+                 if (wayID) {
+                   nodeID = graph.entity(wayID).first(); // focus on the first node of this way
+                 }
+               }
+
+               if (nodeID) {
+                 focusCenter = graph.entity(nodeID).loc;
+               }

              }
              }

+           }

 
 

-             return _t('operations.merge.' + disabled);
+           if (focusCenter) {
+             // Adjust the view
+             var setZoom = Math.max(context.map().zoom(), 19);
+             context.map().unobscuredCenterZoomEase(focusCenter, setZoom);

            }
 
            }
 

-           return _t('operations.merge.description');
-         };
+           if (selectID) {
+             // Enter select mode
+             window.setTimeout(function () {
+               context.enter(modeSelect(context, [selectID]));
+               dispatch.call('focusedIssue', _this, issue);
+             }, 250); // after ease
+           }
+         }; // `getIssuesBySeverity()`
+         // Gets the issues then groups them by error/warning
+         // (This just calls getIssues, then puts issues in groups)
+         //
+         // Arguments
+         //   `options` - (see `getIssues`)
+         // Returns
+         //   Object result like:
+         //   {
+         //     error:    Array of errors,
+         //     warning:  Array of warnings
+         //   }
+         //

 
 

-         operation.annotation = function () {
-           return _t('operations.merge.annotation', {
-             n: selectedIDs.length
-           });
-         };

 
 

-         operation.id = 'merge';
-         operation.keys = [_t('operations.merge.key')];
-         operation.title = _t('operations.merge.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         validator.getIssuesBySeverity = function (options) {
+           var groups = utilArrayGroupBy(validator.getIssues(options), 'severity');
+           groups.error = groups.error || [];
+           groups.warning = groups.warning || [];
+           return groups;
+         }; // `getEntityIssues()`
+         // Gets the issues that the given entity IDs have in common, matching the given options
+         // (This just calls getIssues, then filters for the given entity IDs)
+         // The issues are sorted for relevance
+         //
+         // Arguments
+         //   `entityIDs` - Array or Set of entityIDs to get issues for
+         //   `options` - (see `getIssues`)
+         // Returns
+         //   An Array containing the issues
+         //

 
 

-       function operationPaste(context) {
-         var _pastePoint;

 
 

-         var operation = function operation() {
-           if (!_pastePoint) return;
-           var oldIDs = context.copyIDs();
-           if (!oldIDs.length) return;
-           var projection = context.projection;
-           var extent = geoExtent();
-           var oldGraph = context.copyGraph();
-           var newIDs = [];
-           var action = actionCopyEntities(oldIDs, oldGraph);
-           context.perform(action);
-           var copies = action.copies();
-           var originals = new Set();
-           Object.values(copies).forEach(function (entity) {
-             originals.add(entity.id);
+         validator.getSharedEntityIssues = function (entityIDs, options) {
+           var orderedIssueTypes = [// Show some issue types in a particular order:
+           'missing_tag', 'missing_role', // - missing data first
+           'outdated_tags', 'mismatched_geometry', // - identity issues
+           'crossing_ways', 'almost_junction', // - geometry issues where fixing them might solve connectivity issues
+           'disconnected_way', 'impossible_oneway' // - finally connectivity issues
+           ];
+           var allIssues = validator.getIssues(options);
+           var forEntityIDs = new Set(entityIDs);
+           return allIssues.filter(function (issue) {
+             return (issue.entityIds || []).some(function (entityID) {
+               return forEntityIDs.has(entityID);
+             });
+           }).sort(function (issue1, issue2) {
+             if (issue1.type === issue2.type) {
+               // issues of the same type, sort deterministically
+               return issue1.id < issue2.id ? -1 : 1;
+             }
+
+             var index1 = orderedIssueTypes.indexOf(issue1.type);
+             var index2 = orderedIssueTypes.indexOf(issue2.type);
+
+             if (index1 !== -1 && index2 !== -1) {
+               // both issue types have explicit sort orders
+               return index1 - index2;
+             } else if (index1 === -1 && index2 === -1) {
+               // neither issue type has an explicit sort order, sort by type
+               return issue1.type < issue2.type ? -1 : 1;
+             } else {
+               // order explicit types before everything else
+               return index1 !== -1 ? -1 : 1;
+             }

            });
            });

+         }; // `getEntityIssues()`
+         // Get an array of detected issues for the given entityID.
+         // (This just calls getSharedEntityIssues for a single entity)
+         //
+         // Arguments
+         //   `entityID` - the entity ID to get the issues for
+         //   `options` - (see `getIssues`)
+         // Returns
+         //   An Array containing the issues
+         //

 
 

-           for (var id in copies) {
-             var oldEntity = oldGraph.entity(id);
-             var newEntity = copies[id];

 
 

-             extent._extend(oldEntity.extent(oldGraph)); // Exclude child nodes from newIDs if their parent way was also copied.
+         validator.getEntityIssues = function (entityID, options) {
+           return validator.getSharedEntityIssues([entityID], options);
+         }; // `getRuleKeys()`
+         //
+         // Returns
+         //   An Array containing the rule keys
+         //

 
 
 
 

-             var parents = context.graph().parentWays(newEntity);
-             var parentCopied = parents.some(function (parent) {
-               return originals.has(parent.id);
-             });
+         validator.getRuleKeys = function () {
+           return Object.keys(_rules);
+         }; // `isRuleEnabled()`
+         //
+         // Arguments
+         //   `key` - the rule to check (e.g. 'crossing_ways')
+         // Returns
+         //   `true`/`false`
+         //

 
 

-             if (!parentCopied) {
-               newIDs.push(newEntity.id);
-             }
-           } // Use the location of the copy operation to offset the paste location,
-           // or else use the center of the pasted extent

 
 

+         validator.isRuleEnabled = function (key) {
+           return !_disabledRules[key];
+         }; // `toggleRule()`
+         // Toggles a single validation rule,
+         // then reruns the validation so that the user sees something happen in the UI
+         //
+         // Arguments
+         //   `key` - the rule to toggle (e.g. 'crossing_ways')
+         //

 
 

-           var copyPoint = context.copyLonLat() && projection(context.copyLonLat()) || projection(extent.center());
-           var delta = geoVecSubtract(_pastePoint, copyPoint); // Move the pasted objects to be anchored at the paste location

 
 

-           context.replace(actionMove(newIDs, delta, projection), operation.annotation());
-           context.enter(modeSelect(context, newIDs));
-         };
+         validator.toggleRule = function (key) {
+           if (_disabledRules[key]) {
+             delete _disabledRules[key];
+           } else {
+             _disabledRules[key] = true;
+           }

 
 

-         operation.point = function (val) {
-           _pastePoint = val;
-           return operation;
-         };
+           corePreferences('validate-disabledRules', Object.keys(_disabledRules).join(','));
+           validator.validate();
+         }; // `disableRules()`
+         // Disables given validation rules,
+         // then reruns the validation so that the user sees something happen in the UI
+         //
+         // Arguments
+         //   `keys` - Array or Set containing rule keys to disable
+         //

 
 

-         operation.available = function () {
-           return context.mode().id === 'browse';
-         };

 
 

-         operation.disabled = function () {
-           return !context.copyIDs().length;
-         };
+         validator.disableRules = function (keys) {
+           _disabledRules = {};
+           keys.forEach(function (k) {
+             return _disabledRules[k] = true;
+           });
+           corePreferences('validate-disabledRules', Object.keys(_disabledRules).join(','));
+           validator.validate();
+         }; // `ignoreIssue()`
+         // Don't show the given issue in lists
+         //
+         // Arguments
+         //   `issueID` - the issueID
+         //

 
 

-         operation.tooltip = function () {
-           var oldGraph = context.copyGraph();
-           var ids = context.copyIDs();

 
 

-           if (!ids.length) {
-             return _t('operations.paste.nothing_copied');
+         validator.ignoreIssue = function (issueID) {
+           _ignoredIssueIDs.add(issueID);
+         }; // `validate()`
+         // Validates anything that has changed in the head graph since the last time it was run.
+         // (head graph contains user's edits)
+         //
+         // Returns
+         //   A Promise fulfilled when the validation has completed and then dispatches a `validated` event.
+         //   This may take time but happen in the background during browser idle time.
+         //
+
+
+         validator.validate = function () {
+           // Make sure the caches have graphs assigned to them.
+           // (we don't do this in `reset` because context is still resetting things and `history.base()` is unstable then)
+           var baseGraph = context.history().base();
+           if (!_headCache.graph) _headCache.graph = baseGraph;
+           if (!_baseCache.graph) _baseCache.graph = baseGraph;
+           var prevGraph = _headCache.graph;
+           var currGraph = context.graph();
+
+           if (currGraph === prevGraph) {
+             // _headCache.graph is current - we are caught up
+             _headIsCurrent = true;
+             dispatch.call('validated');
+             return Promise.resolve();

            }
 
            }
 

-           return _t('operations.paste.description', {
-             feature: utilDisplayLabel(oldGraph.entity(ids[0]), oldGraph),
-             n: ids.length
-           });
-         };
+           if (_headPromise) {
+             // Validation already in process, but we aren't caught up to current
+             _headIsCurrent = false; // We will need to catch up after the validation promise fulfills

 
 

-         operation.annotation = function () {
-           var ids = context.copyIDs();
-           return _t('operations.paste.annotation', {
-             n: ids.length
-           });
-         };
+             return _headPromise;
+           } // If we get here, its time to start validating stuff.

 
 

-         operation.id = 'paste';
-         operation.keys = [uiCmd('⌘V')];
-         operation.title = _t('operations.paste.title');
-         return operation;
-       }

 
 

-       function operationReverse(context, selectedIDs) {
-         var operation = function operation() {
-           context.perform(function combinedReverseAction(graph) {
-             actions().forEach(function (action) {
-               graph = action(graph);
-             });
-             return graph;
-           }, operation.annotation());
-           context.validator().validate();
-         };
+           _headCache.graph = currGraph; // take snapshot

 
 

-         function actions(situation) {
-           return selectedIDs.map(function (entityID) {
-             var entity = context.hasEntity(entityID);
-             if (!entity) return null;
+           _completeDiff = context.history().difference().complete();
+           var incrementalDiff = coreDifference(prevGraph, currGraph);
+           var entityIDs = Object.keys(incrementalDiff.complete());
+           entityIDs = _headCache.withAllRelatedEntities(entityIDs); // expand set

 
 

-             if (situation === 'toolbar') {
-               if (entity.type === 'way' && !entity.isOneWay() && !entity.isSided()) return null;
+           if (!entityIDs.size) {
+             dispatch.call('validated');
+             return Promise.resolve();
+           }
+
+           _headPromise = validateEntitiesAsync(entityIDs, _headCache).then(function () {
+             return updateResolvedIssues(entityIDs);
+           }).then(function () {
+             return dispatch.call('validated');
+           })["catch"](function () {
+             /* ignore */
+           }).then(function () {
+             _headPromise = null;
+
+             if (!_headIsCurrent) {
+               validator.validate(); // run it again to catch up to current graph

              }
              }

+           });
+           return _headPromise;
+         }; // register event handlers:
+         // WHEN TO RUN VALIDATION:
+         // When history changes:

 
 

-             var geometry = entity.geometry(context.graph());
-             if (entity.type !== 'node' && geometry !== 'line') return null;
-             var action = actionReverse(entityID);
-             if (action.disabled(context.graph())) return null;
-             return action;
-           }).filter(Boolean);
-         }

 
 

-         function reverseTypeID() {
-           var acts = actions();
-           var nodeActionCount = acts.filter(function (act) {
-             var entity = context.hasEntity(act.entityID());
-             return entity && entity.type === 'node';
-           }).length;
-           if (nodeActionCount === 0) return 'line';
-           if (nodeActionCount === acts.length) return 'point';
-           return 'feature';
-         }
+         context.history().on('restore.validator', validator.validate) // on restore saved history
+         .on('undone.validator', validator.validate) // on undo
+         .on('redone.validator', validator.validate) // on redo
+         .on('reset.validator', function () {
+           // on history reset - happens after save, or enter/exit walkthrough
+           reset(false); // cached issues aren't valid any longer if the history has been reset

 
 

-         operation.available = function (situation) {
-           return actions(situation).length > 0;
-         };
+           validator.validate();
+         }); // but not on 'change' (e.g. while drawing)
+         // When user changes editing modes (to catch recent changes e.g. drawing)

 
 

-         operation.disabled = function () {
-           return false;
-         };
+         context.on('exit.validator', validator.validate); // When merging fetched data, validate base graph:

 
 

-         operation.tooltip = function () {
-           return _t('operations.reverse.description.' + reverseTypeID());
-         };
+         context.history().on('merge.validator', function (entities) {
+           if (!entities) return; // Make sure the caches have graphs assigned to them.
+           // (we don't do this in `reset` because context is still resetting things and `history.base()` is unstable then)

 
 

-         operation.annotation = function () {
-           var acts = actions();
-           return _t('operations.reverse.annotation.' + reverseTypeID(), {
-             n: acts.length
+           var baseGraph = context.history().base();
+           if (!_headCache.graph) _headCache.graph = baseGraph;
+           if (!_baseCache.graph) _baseCache.graph = baseGraph;
+           var entityIDs = entities.map(function (entity) {
+             return entity.id;

            });
            });

-         };
+           entityIDs = _baseCache.withAllRelatedEntities(entityIDs); // expand set
+
+           validateEntitiesAsync(entityIDs, _baseCache);
+         }); // `validateEntity()`   (private)
+         // Runs all validation rules on a single entity.
+         // Some things to note:
+         //  - Graph is passed in from whenever the validation was started.  Validators shouldn't use
+         //   `context.graph()` because this all happens async, and the graph might have changed
+         //   (for example, nodes getting deleted before the validation can run)
+         //  - Validator functions may still be waiting on something and return a "provisional" result.
+         //    In this situation, we will schedule to revalidate the entity sometime later.
+         //
+         // Arguments
+         //   `entity` - The entity
+         //   `graph` - graph containing the entity
+         //
+         // Returns
+         //   Object result like:
+         //   {
+         //     issues:       Array of detected issues
+         //     provisional:  `true` if provisional result, `false` if final result
+         //   }
+         //

 
 

-         operation.id = 'reverse';
-         operation.keys = [_t('operations.reverse.key')];
-         operation.title = _t('operations.reverse.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         function validateEntity(entity, graph) {
+           var result = {
+             issues: [],
+             provisional: false
+           };
+           Object.keys(_rules).forEach(runValidation); // run all rules

 
 

-       function operationSplit(context, selectedIDs) {
-         var _vertexIds = selectedIDs.filter(function (id) {
-           return context.graph().geometry(id) === 'vertex';
-         });
+           return result; // runs validation and appends resulting issues

 
 

-         var _selectedWayIds = selectedIDs.filter(function (id) {
-           var entity = context.graph().hasEntity(id);
-           return entity && entity.type === 'way';
-         });
+           function runValidation(key) {
+             var fn = _rules[key];

 
 

-         var _isAvailable = _vertexIds.length > 0 && _vertexIds.length + _selectedWayIds.length === selectedIDs.length;
+             if (typeof fn !== 'function') {
+               console.error('no such validation rule = ' + key); // eslint-disable-line no-console

 
 

-         var _action = actionSplit(_vertexIds);
+               return;
+             }

 
 

-         var _ways = [];
-         var _geometry = 'feature';
-         var _waysAmount = 'single';
+             var detected = fn(entity, graph);

 
 

-         var _nodesAmount = _vertexIds.length === 1 ? 'single' : 'multiple';
+             if (detected.provisional) {
+               // this validation should be run again later
+               result.provisional = true;
+             }
+
+             detected = detected.filter(applySeverityOverrides);
+             result.issues = result.issues.concat(detected); // If there are any override rules that match the issue type/subtype,
+             // adjust severity (or disable it) and keep/discard as quickly as possible.
+
+             function applySeverityOverrides(issue) {
+               var type = issue.type;
+               var subtype = issue.subtype || '';
+               var i;
+
+               for (i = 0; i < _errorOverrides.length; i++) {
+                 if (_errorOverrides[i].type.test(type) && _errorOverrides[i].subtype.test(subtype)) {
+                   issue.severity = 'error';
+                   return true;
+                 }
+               }

 
 

-         if (_isAvailable) {
-           if (_selectedWayIds.length) _action.limitWays(_selectedWayIds);
-           _ways = _action.ways(context.graph());
-           var geometries = {};
+               for (i = 0; i < _warningOverrides.length; i++) {
+                 if (_warningOverrides[i].type.test(type) && _warningOverrides[i].subtype.test(subtype)) {
+                   issue.severity = 'warning';
+                   return true;
+                 }
+               }

 
 

-           _ways.forEach(function (way) {
-             geometries[way.geometry(context.graph())] = true;
-           });
+               for (i = 0; i < _disableOverrides.length; i++) {
+                 if (_disableOverrides[i].type.test(type) && _disableOverrides[i].subtype.test(subtype)) {
+                   return false;
+                 }
+               }

 
 

-           if (Object.keys(geometries).length === 1) {
-             _geometry = Object.keys(geometries)[0];
+               return true;
+             }

            }
            }

+         } // `updateResolvedIssues()`   (private)
+         // Determine if any issues were resolved for the given entities.
+         // This is called by `validate()` after validation of the head graph
+         //
+         // Give the user credit for fixing an issue if:
+         // - the issue is in the base cache
+         // - the issue is not in the head cache
+         // - the user did something to one of the entities involved in the issue
+         //
+         // Arguments
+         //   `entityIDs` - Array or Set containing entity IDs.
+         //

 
 

-           _waysAmount = _ways.length === 1 ? 'single' : 'multiple';
-         }
-
-         var operation = function operation() {
-           var difference = context.perform(_action, operation.annotation()); // select both the nodes and the ways so the mapper can immediately disconnect them if desired

 
 

-           var idsToSelect = _vertexIds.concat(difference.extantIDs().filter(function (id) {
-             // filter out relations that may have had member additions
-             return context.entity(id).type === 'way';
-           }));
+         function updateResolvedIssues(entityIDs) {
+           entityIDs.forEach(function (entityID) {
+             var baseIssues = _baseCache.issuesByEntityID[entityID];
+             if (!baseIssues) return;
+             baseIssues.forEach(function (issueID) {
+               // Check if the user did something to one of the entities involved in this issue.
+               // (This issue could involve multiple entities, e.g. disconnected routable features)
+               var issue = _baseCache.issuesByIssueID[issueID];
+               var userModified = (issue.entityIds || []).some(function (id) {
+                 return _completeDiff.hasOwnProperty(id);
+               });

 
 

-           context.enter(modeSelect(context, idsToSelect));
-         };
+               if (userModified && !_headCache.issuesByIssueID[issueID]) {
+                 // issue seems fixed
+                 _resolvedIssueIDs.add(issueID);
+               } else {
+                 // issue still not resolved
+                 _resolvedIssueIDs["delete"](issueID); // (did undo, or possibly fixed and then re-caused the issue)

 
 

-         operation.relatedEntityIds = function () {
-           return _selectedWayIds.length ? [] : _ways.map(function (way) {
-             return way.id;
+               }
+             });

            });
            });

-         };
+         } // `validateEntitiesAsync()`   (private)
+         // Schedule validation for many entities.
+         //
+         // Arguments
+         //   `entityIDs` - Array or Set containing entityIDs.
+         //   `graph` - the graph to validate that contains those entities
+         //   `cache` - the cache to store results in (_headCache or _baseCache)
+         //
+         // Returns
+         //   A Promise fulfilled when the validation has completed.
+         //   This may take time but happen in the background during browser idle time.
+         //

 
 

-         operation.available = function () {
-           return _isAvailable;
-         };

 
 

-         operation.disabled = function () {
-           var reason = _action.disabled(context.graph());
+         function validateEntitiesAsync(entityIDs, cache) {
+           // Enqueue the work
+           var jobs = Array.from(entityIDs).map(function (entityID) {
+             if (cache.queuedEntityIDs.has(entityID)) return null; // queued already

 
 

-           if (reason) {
-             return reason;
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           }
+             cache.queuedEntityIDs.add(entityID); // Clear caches for existing issues related to this entity

 
 

-           return false;
-         };
+             cache.uncacheEntityID(entityID);
+             return function () {
+               cache.queuedEntityIDs["delete"](entityID);
+               var graph = cache.graph;
+               if (!graph) return; // was reset?

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           if (disable) return _t('operations.split.' + disable);
-           return _t('operations.split.description.' + _geometry + '.' + _waysAmount + '.' + _nodesAmount + '_node');
-         };
+               var entity = graph.hasEntity(entityID); // Sanity check: don't validate deleted entities

 
 

-         operation.annotation = function () {
-           return _t('operations.split.annotation.' + _geometry, {
-             n: _ways.length
-           });
-         };
+               if (!entity) return; // detect new issues and update caches

 
 

-         operation.id = 'split';
-         operation.keys = [_t('operations.split.key')];
-         operation.title = _t('operations.split.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+               var result = validateEntity(entity, graph);

 
 

-       function operationStraighten(context, selectedIDs) {
-         var _wayIDs = selectedIDs.filter(function (id) {
-           return id.charAt(0) === 'w';
-         });
+               if (result.provisional) {
+                 // provisional result
+                 cache.provisionalEntityIDs.add(entityID); // we'll need to revalidate this entity again later
+               }

 
 

-         var _nodeIDs = selectedIDs.filter(function (id) {
-           return id.charAt(0) === 'n';
-         });
+               cache.cacheIssues(result.issues); // update cache
+             };
+           }).filter(Boolean); // Perform the work in chunks.
+           // Because this will happen during idle callbacks, we want to choose a chunk size
+           // that won't make the browser stutter too badly.

 
 

-         var _amount = (_wayIDs.length ? _wayIDs : _nodeIDs).length === 1 ? 'single' : 'multiple';
+           cache.queue = cache.queue.concat(utilArrayChunk(jobs, 100)); // Perform the work

 
 

-         var _nodes = utilGetAllNodes(selectedIDs, context.graph());
+           if (cache.queuePromise) return cache.queuePromise;
+           cache.queuePromise = processQueue(cache).then(function () {
+             return revalidateProvisionalEntities(cache);
+           })["catch"](function () {
+             /* ignore */
+           })["finally"](function () {
+             return cache.queuePromise = null;
+           });
+           return cache.queuePromise;
+         } // `revalidateProvisionalEntities()`   (private)
+         // Sometimes a validator will return a "provisional" result.
+         // In this situation, we'll need to revalidate the entity later.
+         // This function waits a delay, then places them back into the validation queue.
+         //
+         // Arguments
+         //   `cache` - The cache (_headCache or _baseCache)
+         //

 
 

-         var _coords = _nodes.map(function (n) {
-           return n.loc;
-         });

 
 

-         var _extent = utilTotalExtent(selectedIDs, context.graph());
+         function revalidateProvisionalEntities(cache) {
+           if (!cache.provisionalEntityIDs.size) return; // nothing to do

 
 

-         var _action = chooseAction();
+           var handle = window.setTimeout(function () {
+             _deferredST["delete"](handle);

 
 

-         var _geometry;
+             if (!cache.provisionalEntityIDs.size) return; // nothing to do

 
 

-         function chooseAction() {
-           // straighten selected nodes
-           if (_wayIDs.length === 0 && _nodeIDs.length > 2) {
-             _geometry = 'point';
-             return actionStraightenNodes(_nodeIDs, context.projection); // straighten selected ways (possibly between range of 2 selected nodes)
-           } else if (_wayIDs.length > 0 && (_nodeIDs.length === 0 || _nodeIDs.length === 2)) {
-             var startNodeIDs = [];
-             var endNodeIDs = [];
+             validateEntitiesAsync(Array.from(cache.provisionalEntityIDs), cache);
+           }, RETRY);

 
 

-             for (var i = 0; i < selectedIDs.length; i++) {
-               var entity = context.entity(selectedIDs[i]);
+           _deferredST.add(handle);
+         } // `processQueue(queue)`   (private)
+         // Process the next chunk of deferred validation work
+         //
+         // Arguments
+         //   `cache` - The cache (_headCache or _baseCache)
+         //
+         // Returns
+         //   A Promise fulfilled when the validation has completed.
+         //   This may take time but happen in the background during browser idle time.
+         //

 
 

-               if (entity.type === 'node') {
-                 continue;
-               } else if (entity.type !== 'way' || entity.isClosed()) {
-                 return null; // exit early, can't straighten these
-               }

 
 

-               startNodeIDs.push(entity.first());
-               endNodeIDs.push(entity.last());
-             } // Remove duplicate end/startNodeIDs (duplicate nodes cannot be at the line end)
+         function processQueue(cache) {
+           // console.log(`${cache.which} queue length ${cache.queue.length}`);
+           if (!cache.queue.length) return Promise.resolve(); // we're done

 
 

+           var chunk = cache.queue.pop();
+           return new Promise(function (resolvePromise) {
+             var handle = window.requestIdleCallback(function () {
+               _deferredRIC["delete"](handle); // const t0 = performance.now();

 
 

-             startNodeIDs = startNodeIDs.filter(function (n) {
-               return startNodeIDs.indexOf(n) === startNodeIDs.lastIndexOf(n);
-             });
-             endNodeIDs = endNodeIDs.filter(function (n) {
-               return endNodeIDs.indexOf(n) === endNodeIDs.lastIndexOf(n);
-             }); // Ensure all ways are connected (i.e. only 2 unique endpoints/startpoints)

 
 

-             if (utilArrayDifference(startNodeIDs, endNodeIDs).length + utilArrayDifference(endNodeIDs, startNodeIDs).length !== 2) return null; // Ensure path contains at least 3 unique nodes
+               chunk.forEach(function (job) {
+                 return job();
+               }); // const t1 = performance.now();
+               // console.log('chunk processed in ' + (t1 - t0) + ' ms');

 
 

-             var wayNodeIDs = utilGetAllNodes(_wayIDs, context.graph()).map(function (node) {
-               return node.id;
+               resolvePromise();

              });
              });

-             if (wayNodeIDs.length <= 2) return null; // If range of 2 selected nodes is supplied, ensure nodes lie on the selected path

 
 

-             if (_nodeIDs.length === 2 && (wayNodeIDs.indexOf(_nodeIDs[0]) === -1 || wayNodeIDs.indexOf(_nodeIDs[1]) === -1)) return null;
+             _deferredRIC.add(handle);
+           }).then(function () {
+             // dispatch an event sometimes to redraw various UI things
+             if (cache.queue.length % 25 === 0) dispatch.call('validated');
+           }).then(function () {
+             return processQueue(cache);
+           });
+         }

 
 

-             if (_nodeIDs.length) {
-               // If we're only straightenting between two points, we only need that extent visible
-               _extent = utilTotalExtent(_nodeIDs, context.graph());
-             }
+         return validator;
+       } // `validationCache()`   (private)
+       // Creates a cache to store validation state
+       // We create 2 of these:
+       //   `_baseCache` for validation on the base graph (unedited)
+       //   `_headCache` for validation on the head graph (user edits applied)
+       //
+       // Arguments
+       //   `which` - just a String 'base' or 'head' to keep track of it
+       //

 
 

-             _geometry = 'line';
-             return actionStraightenWay(selectedIDs, context.projection);
-           }
+       function validationCache(which) {
+         var cache = {
+           which: which,
+           graph: null,
+           queue: [],
+           queuePromise: null,
+           queuedEntityIDs: new Set(),
+           provisionalEntityIDs: new Set(),
+           issuesByIssueID: {},
+           // issue.id -> issue
+           issuesByEntityID: {} // entity.id -> Set(issue.id)

 
 

-           return null;
-         }
+         };

 
 

-         function operation() {
-           if (!_action) return;
-           context.perform(_action, operation.annotation());
-           window.setTimeout(function () {
-             context.validator().validate();
-           }, 300); // after any transition
-         }
+         cache.cacheIssue = function (issue) {
+           (issue.entityIds || []).forEach(function (entityID) {
+             if (!cache.issuesByEntityID[entityID]) {
+               cache.issuesByEntityID[entityID] = new Set();
+             }

 
 

-         operation.available = function () {
-           return Boolean(_action);
+             cache.issuesByEntityID[entityID].add(issue.id);
+           });
+           cache.issuesByIssueID[issue.id] = issue;

          };
 
          };
 

-         operation.disabled = function () {
-           var reason = _action.disabled(context.graph());
+         cache.uncacheIssue = function (issue) {
+           (issue.entityIds || []).forEach(function (entityID) {
+             if (cache.issuesByEntityID[entityID]) {
+               cache.issuesByEntityID[entityID]["delete"](issue.id);
+             }
+           });
+           delete cache.issuesByIssueID[issue.id];
+         };

 
 

-           if (reason) {
-             return reason;
-           } else if (_extent.percentContainedIn(context.map().extent()) < 0.8) {
-             return 'too_large';
-           } else if (someMissing()) {
-             return 'not_downloaded';
-           } else if (selectedIDs.some(context.hasHiddenConnections)) {
-             return 'connected_to_hidden';
-           }
+         cache.cacheIssues = function (issues) {
+           issues.forEach(cache.cacheIssue);
+         };

 
 

-           return false;
+         cache.uncacheIssues = function (issues) {
+           issues.forEach(cache.uncacheIssue);
+         };

 
 

-           function someMissing() {
-             if (context.inIntro()) return false;
-             var osm = context.connection();
+         cache.uncacheIssuesOfType = function (type) {
+           var issuesOfType = Object.values(cache.issuesByIssueID).filter(function (issue) {
+             return issue.type === type;
+           });
+           cache.uncacheIssues(issuesOfType);
+         }; // Remove a single entity and all its related issues from the caches

 
 

-             if (osm) {
-               var missing = _coords.filter(function (loc) {
-                 return !osm.isDataLoaded(loc);
-               });

 
 

-               if (missing.length) {
-                 missing.forEach(function (loc) {
-                   context.loadTileAtLoc(loc);
-                 });
-                 return true;
-               }
-             }
+         cache.uncacheEntityID = function (entityID) {
+           var entityIssueIDs = cache.issuesByEntityID[entityID];

 
 

-             return false;
+           if (entityIssueIDs) {
+             entityIssueIDs.forEach(function (issueID) {
+               var issue = cache.issuesByIssueID[issueID];
+
+               if (issue) {
+                 cache.uncacheIssue(issue);
+               } else {
+                 // shouldn't happen, clean up
+                 delete cache.issuesByIssueID[issueID];
+               }
+             });

            }
            }

-         };

 
 

-         operation.tooltip = function () {
-           var disable = operation.disabled();
-           return disable ? _t('operations.straighten.' + disable + '.' + _amount) : _t('operations.straighten.description.' + _geometry + (_wayIDs.length === 1 ? '' : 's'));
-         };
+           delete cache.issuesByEntityID[entityID];
+           cache.provisionalEntityIDs["delete"](entityID);
+         }; // Return the expandeded set of entityIDs related to issues for the given entityIDs
+         //
+         // Arguments
+         //   `entityIDs` - Array or Set containing entityIDs.
+         //

 
 

-         operation.annotation = function () {
-           return _t('operations.straighten.annotation.' + _geometry, {
-             n: _wayIDs.length ? _wayIDs.length : _nodeIDs.length
-           });
-         };

 
 

-         operation.id = 'straighten';
-         operation.keys = [_t('operations.straighten.key')];
-         operation.title = _t('operations.straighten.title');
-         operation.behavior = behaviorOperation(context).which(operation);
-         return operation;
-       }
+         cache.withAllRelatedEntities = function (entityIDs) {
+           var result = new Set();
+           (entityIDs || []).forEach(function (entityID) {
+             result.add(entityID); // include self

 
 

-       var Operations = /*#__PURE__*/Object.freeze({
-               __proto__: null,
-               operationCircularize: operationCircularize,
-               operationContinue: operationContinue,
-               operationCopy: operationCopy,
-               operationDelete: operationDelete,
-               operationDisconnect: operationDisconnect,
-               operationDowngrade: operationDowngrade,
-               operationExtract: operationExtract,
-               operationMerge: operationMerge,
-               operationMove: operationMove,
-               operationOrthogonalize: operationOrthogonalize,
-               operationPaste: operationPaste,
-               operationReflectShort: operationReflectShort,
-               operationReflectLong: operationReflectLong,
-               operationReverse: operationReverse,
-               operationRotate: operationRotate,
-               operationSplit: operationSplit,
-               operationStraighten: operationStraighten
-       });
+             var entityIssueIDs = cache.issuesByEntityID[entityID];

 
 

-       var _relatedParent;
+             if (entityIssueIDs) {
+               entityIssueIDs.forEach(function (issueID) {
+                 var issue = cache.issuesByIssueID[issueID];

 
 

-       function modeSelect(context, selectedIDs) {
-         var mode = {
-           id: 'select',
-           button: 'browse'
+                 if (issue) {
+                   (issue.entityIds || []).forEach(function (relatedID) {
+                     return result.add(relatedID);
+                   });
+                 } else {
+                   // shouldn't happen, clean up
+                   delete cache.issuesByIssueID[issueID];
+                 }
+               });
+             }
+           });
+           return result;

          };
          };

-         var keybinding = utilKeybinding('select');

 
 

-         var _breatheBehavior = behaviorBreathe();
+         return cache;
+       }

 
 

-         var _modeDragNode = modeDragNode(context);
+       function coreUploader(context) {
+         var dispatch = dispatch$8( // Start and end events are dispatched exactly once each per legitimate outside call to `save`
+         'saveStarted', // dispatched as soon as a call to `save` has been deemed legitimate
+         'saveEnded', // dispatched after the result event has been dispatched
+         'willAttemptUpload', // dispatched before the actual upload call occurs, if it will
+         'progressChanged', // Each save results in one of these outcomes:
+         'resultNoChanges', // upload wasn't attempted since there were no edits
+         'resultErrors', // upload failed due to errors
+         'resultConflicts', // upload failed due to data conflicts
+         'resultSuccess' // upload completed without errors
+         );
+         var _isSaving = false;
+         var _conflicts = [];
+         var _errors = [];

 
 

-         var _selectBehavior;
+         var _origChanges;

 
 

-         var _behaviors = [];
-         var _operations = [];
-         var _newFeature = false;
-         var _follow = false;
+         var _discardTags = {};
+         _mainFileFetcher.get('discarded').then(function (d) {
+           _discardTags = d;
+         })["catch"](function () {
+           /* ignore */
+         });
+         var uploader = utilRebind({}, dispatch, 'on');

 
 

-         function singular() {
-           if (selectedIDs && selectedIDs.length === 1) {
-             return context.hasEntity(selectedIDs[0]);
-           }
-         }
+         uploader.isSaving = function () {
+           return _isSaving;
+         };

 
 

-         function selectedEntities() {
-           return selectedIDs.map(function (id) {
-             return context.hasEntity(id);
-           }).filter(Boolean);
-         }
+         uploader.save = function (changeset, tryAgain, checkConflicts) {
+           // Guard against accidentally entering save code twice - #4641
+           if (_isSaving && !tryAgain) {
+             return;
+           }

 
 

-         function checkSelectedIDs() {
-           var ids = [];
+           var osm = context.connection();
+           if (!osm) return; // If user somehow got logged out mid-save, try to reauthenticate..
+           // This can happen if they were logged in from before, but the tokens are no longer valid.

 
 

-           if (Array.isArray(selectedIDs)) {
-             ids = selectedIDs.filter(function (id) {
-               return context.hasEntity(id);
+           if (!osm.authenticated()) {
+             osm.authenticate(function (err) {
+               if (!err) {
+                 uploader.save(changeset, tryAgain, checkConflicts); // continue where we left off..
+               }

              });
              });

+             return;

            }
 
            }
 

-           if (!ids.length) {
-             context.enter(modeBrowse(context));
-             return false;
-           } else if (selectedIDs.length > 1 && ids.length === 1 || selectedIDs.length === 1 && ids.length > 1) {
-             // switch between single- and multi-select UI
-             context.enter(modeSelect(context, ids));
-             return false;
+           if (!_isSaving) {
+             _isSaving = true;
+             dispatch.call('saveStarted', this);

            }
 
            }
 

-           selectedIDs = ids;
-           return true;
-         } // find the common parent ways for nextVertex, previousVertex
-
+           var history = context.history();
+           _conflicts = [];
+           _errors = []; // Store original changes, in case user wants to download them as an .osc file

 
 

-         function commonParents() {
-           var graph = context.graph();
-           var commonParents = [];
+           _origChanges = history.changes(actionDiscardTags(history.difference(), _discardTags)); // First time, `history.perform` a no-op action.
+           // Any conflict resolutions will be done as `history.replace`
+           // Remember to pop this later if needed

 
 

-           for (var i = 0; i < selectedIDs.length; i++) {
-             var entity = context.hasEntity(selectedIDs[i]);
+           if (!tryAgain) {
+             history.perform(actionNoop());
+           } // Attempt a fast upload.. If there are conflicts, re-enter with `checkConflicts = true`

 
 

-             if (!entity || entity.geometry(graph) !== 'vertex') {
-               return []; // selection includes some not vertices
-             }

 
 

-             var currParents = graph.parentWays(entity).map(function (w) {
-               return w.id;
-             });
+           if (!checkConflicts) {
+             upload(changeset); // Do the full (slow) conflict check..
+           } else {
+             performFullConflictCheck(changeset);
+           }
+         };

 
 

-             if (!commonParents.length) {
-               commonParents = currParents;
-               continue;
-             }
+         function performFullConflictCheck(changeset) {
+           var osm = context.connection();
+           if (!osm) return;
+           var history = context.history();
+           var localGraph = context.graph();
+           var remoteGraph = coreGraph(history.base(), true);
+           var summary = history.difference().summary();
+           var _toCheck = [];

 
 

-             commonParents = utilArrayIntersection(commonParents, currParents);
+           for (var i = 0; i < summary.length; i++) {
+             var item = summary[i];

 
 

-             if (!commonParents.length) {
-               return [];
+             if (item.changeType === 'modified') {
+               _toCheck.push(item.entity.id);

              }
            }
 
              }
            }
 

-           return commonParents;
-         }
-
-         function singularParent() {
-           var parents = commonParents();
+           var _toLoad = withChildNodes(_toCheck, localGraph);

 
 

-           if (!parents || parents.length === 0) {
-             _relatedParent = null;
-             return null;
-           } // relatedParent is used when we visit a vertex with multiple
-           // parents, and we want to remember which parent line we started on.
+           var _loaded = {};
+           var _toLoadCount = 0;
+           var _toLoadTotal = _toLoad.length;

 
 

+           if (_toCheck.length) {
+             dispatch.call('progressChanged', this, _toLoadCount, _toLoadTotal);

 
 

-           if (parents.length === 1) {
-             _relatedParent = parents[0]; // remember this parent for later
+             _toLoad.forEach(function (id) {
+               _loaded[id] = false;
+             });

 
 

-             return _relatedParent;
+             osm.loadMultiple(_toLoad, loaded);
+           } else {
+             upload(changeset);

            }
 
            }
 

-           if (parents.indexOf(_relatedParent) !== -1) {
-             return _relatedParent; // prefer the previously seen parent
-           }
+           return;

 
 

-           return parents[0];
-         }
+           function withChildNodes(ids, graph) {
+             var s = new Set(ids);
+             ids.forEach(function (id) {
+               var entity = graph.entity(id);
+               if (entity.type !== 'way') return;
+               graph.childNodes(entity).forEach(function (child) {
+                 if (child.version !== undefined) {
+                   s.add(child.id);
+                 }
+               });
+             });
+             return Array.from(s);
+           } // Reload modified entities into an alternate graph and check for conflicts..

 
 

-         mode.selectedIDs = function (val) {
-           if (!arguments.length) return selectedIDs;
-           selectedIDs = val;
-           return mode;
-         };

 
 

-         mode.zoomToSelected = function () {
-           context.map().zoomToEase(selectedEntities());
-         };
+           function loaded(err, result) {
+             if (_errors.length) return;

 
 

-         mode.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return mode;
-         };
+             if (err) {
+               _errors.push({
+                 msg: err.message || err.responseText,
+                 details: [_t('save.status_code', {
+                   code: err.status
+                 })]
+               });

 
 

-         mode.selectBehavior = function (val) {
-           if (!arguments.length) return _selectBehavior;
-           _selectBehavior = val;
-           return mode;
-         };
+               didResultInErrors();
+             } else {
+               var loadMore = [];
+               result.data.forEach(function (entity) {
+                 remoteGraph.replace(entity);
+                 _loaded[entity.id] = true;
+                 _toLoad = _toLoad.filter(function (val) {
+                   return val !== entity.id;
+                 });
+                 if (!entity.visible) return; // Because loadMultiple doesn't download /full like loadEntity,
+                 // need to also load children that aren't already being checked..

 
 

-         mode.follow = function (val) {
-           if (!arguments.length) return _follow;
-           _follow = val;
-           return mode;
-         };
+                 var i, id;

 
 

-         function loadOperations() {
-           _operations.forEach(function (operation) {
-             if (operation.behavior) {
-               context.uninstall(operation.behavior);
-             }
-           });
+                 if (entity.type === 'way') {
+                   for (i = 0; i < entity.nodes.length; i++) {
+                     id = entity.nodes[i];

 
 

-           _operations = Object.values(Operations).map(function (o) {
-             return o(context, selectedIDs);
-           }).filter(function (o) {
-             return o.id !== 'delete' && o.id !== 'downgrade' && o.id !== 'copy';
-           }).concat([// group copy/downgrade/delete operation together at the end of the list
-           operationCopy(context, selectedIDs), operationDowngrade(context, selectedIDs), operationDelete(context, selectedIDs)]).filter(function (operation) {
-             return operation.available();
-           });
+                     if (_loaded[id] === undefined) {
+                       _loaded[id] = false;
+                       loadMore.push(id);
+                     }
+                   }
+                 } else if (entity.type === 'relation' && entity.isMultipolygon()) {
+                   for (i = 0; i < entity.members.length; i++) {
+                     id = entity.members[i].id;

 
 

-           _operations.forEach(function (operation) {
-             if (operation.behavior) {
-               context.install(operation.behavior);
-             }
-           }); // remove any displayed menu
+                     if (_loaded[id] === undefined) {
+                       _loaded[id] = false;
+                       loadMore.push(id);
+                     }
+                   }
+                 }
+               });
+               _toLoadCount += result.data.length;
+               _toLoadTotal += loadMore.length;
+               dispatch.call('progressChanged', this, _toLoadCount, _toLoadTotal);

 
 

+               if (loadMore.length) {
+                 _toLoad.push.apply(_toLoad, loadMore);

 
 

-           context.ui().closeEditMenu();
-         }
+                 osm.loadMultiple(loadMore, loaded);
+               }

 
 

-         mode.operations = function () {
-           return _operations;
-         };
+               if (!_toLoad.length) {
+                 detectConflicts();
+                 upload(changeset);
+               }
+             }
+           }
+
+           function detectConflicts() {
+             function choice(id, text, _action) {
+               return {
+                 id: id,
+                 text: text,
+                 action: function action() {
+                   history.replace(_action);
+                 }
+               };
+             }
+
+             function formatUser(d) {
+               return '<a href="' + osm.userURL(d) + '" target="_blank">' + d + '</a>';
+             }

 
 

-         mode.enter = function () {
-           if (!checkSelectedIDs()) return;
-           context.features().forceVisible(selectedIDs);
+             function entityName(entity) {
+               return utilDisplayName(entity) || utilDisplayType(entity.id) + ' ' + entity.id;
+             }

 
 

-           _modeDragNode.restoreSelectedIDs(selectedIDs);
+             function sameVersions(local, remote) {
+               if (local.version !== remote.version) return false;

 
 

-           loadOperations();
+               if (local.type === 'way') {
+                 var children = utilArrayUnion(local.nodes, remote.nodes);

 
 

-           if (!_behaviors.length) {
-             if (!_selectBehavior) _selectBehavior = behaviorSelect(context);
-             _behaviors = [behaviorPaste(context), _breatheBehavior, behaviorHover(context).on('hover', context.ui().sidebar.hoverModeSelect), _selectBehavior, behaviorLasso(context), _modeDragNode.behavior, modeDragNote(context).behavior];
-           }
+                 for (var i = 0; i < children.length; i++) {
+                   var a = localGraph.hasEntity(children[i]);
+                   var b = remoteGraph.hasEntity(children[i]);
+                   if (a && b && a.version !== b.version) return false;
+                 }
+               }

 
 

-           _behaviors.forEach(context.install);
+               return true;
+             }

 
 

-           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on(['[', 'pgup'], previousVertex).on([']', 'pgdown'], nextVertex).on(['{', uiCmd('⌘['), 'home'], firstVertex).on(['}', uiCmd('⌘]'), 'end'], lastVertex).on(uiCmd('⇧←'), nudgeSelection([-10, 0])).on(uiCmd('⇧↑'), nudgeSelection([0, -10])).on(uiCmd('⇧→'), nudgeSelection([10, 0])).on(uiCmd('⇧↓'), nudgeSelection([0, 10])).on(uiCmd('⇧⌥←'), nudgeSelection([-100, 0])).on(uiCmd('⇧⌥↑'), nudgeSelection([0, -100])).on(uiCmd('⇧⌥→'), nudgeSelection([100, 0])).on(uiCmd('⇧⌥↓'), nudgeSelection([0, 100])).on(utilKeybinding.plusKeys.map(function (key) {
-             return uiCmd('⇧' + key);
-           }), scaleSelection(1.05)).on(utilKeybinding.plusKeys.map(function (key) {
-             return uiCmd('⇧⌥' + key);
-           }), scaleSelection(Math.pow(1.05, 5))).on(utilKeybinding.minusKeys.map(function (key) {
-             return uiCmd('⇧' + key);
-           }), scaleSelection(1 / 1.05)).on(utilKeybinding.minusKeys.map(function (key) {
-             return uiCmd('⇧⌥' + key);
-           }), scaleSelection(1 / Math.pow(1.05, 5))).on(['\\', 'pause'], nextParent).on('⎋', esc, true);
-           select(document).call(keybinding);
-           context.ui().sidebar.select(selectedIDs, _newFeature);
-           context.history().on('change.select', function () {
-             loadOperations(); // reselect after change in case relation members were removed or added
+             _toCheck.forEach(function (id) {
+               var local = localGraph.entity(id);
+               var remote = remoteGraph.entity(id);
+               if (sameVersions(local, remote)) return;
+               var merge = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags, formatUser);
+               history.replace(merge);
+               var mergeConflicts = merge.conflicts();
+               if (!mergeConflicts.length) return; // merged safely

 
 

-             selectElements();
-           }).on('undone.select', checkSelectedIDs).on('redone.select', checkSelectedIDs);
-           context.map().on('drawn.select', selectElements).on('crossEditableZoom.select', function () {
-             selectElements();
+               var forceLocal = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags).withOption('force_local');
+               var forceRemote = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags).withOption('force_remote');
+               var keepMine = _t('save.conflict.' + (remote.visible ? 'keep_local' : 'restore'));
+               var keepTheirs = _t('save.conflict.' + (remote.visible ? 'keep_remote' : 'delete'));

 
 

-             _breatheBehavior.restartIfNeeded(context.surface());
-           });
-           context.map().doubleUpHandler().on('doubleUp.modeSelect', didDoubleUp);
-           selectElements();
+               _conflicts.push({
+                 id: id,
+                 name: entityName(local),
+                 details: mergeConflicts,
+                 chosen: 1,
+                 choices: [choice(id, keepMine, forceLocal), choice(id, keepTheirs, forceRemote)]
+               });
+             });
+           }
+         }

 
 

-           if (_follow) {
-             var extent = geoExtent();
-             var graph = context.graph();
-             selectedIDs.forEach(function (id) {
-               var entity = context.entity(id);
+         function upload(changeset) {
+           var osm = context.connection();

 
 

-               extent._extend(entity.extent(graph));
+           if (!osm) {
+             _errors.push({
+               msg: 'No OSM Service'

              });
              });

-             var loc = extent.center();
-             context.map().centerEase(loc); // we could enter the mode multiple times, so reset follow for next time
+           }

 
 

-             _follow = false;
+           if (_conflicts.length) {
+             didResultInConflicts(changeset);
+           } else if (_errors.length) {
+             didResultInErrors();
+           } else {
+             var history = context.history();
+             var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
+
+             if (changes.modified.length || changes.created.length || changes.deleted.length) {
+               dispatch.call('willAttemptUpload', this);
+               osm.putChangeset(changeset, changes, uploadCallback);
+             } else {
+               // changes were insignificant or reverted by user
+               didResultInNoChanges();
+             }

            }
            }

+         }

 
 

-           function nudgeSelection(delta) {
-             return function () {
-               // prevent nudging during low zoom selection
-               if (!context.map().withinEditableZoom()) return;
-               var moveOp = operationMove(context, selectedIDs);
+         function uploadCallback(err, changeset) {
+           if (err) {
+             if (err.status === 409) {
+               // 409 Conflict
+               uploader.save(changeset, true, true); // tryAgain = true, checkConflicts = true
+             } else {
+               _errors.push({
+                 msg: err.message || err.responseText,
+                 details: [_t('save.status_code', {
+                   code: err.status
+                 })]
+               });

 
 

-               if (moveOp.disabled()) {
-                 context.ui().flash.duration(4000).iconName('#iD-operation-' + moveOp.id).iconClass('operation disabled').label(moveOp.tooltip)();
-               } else {
-                 context.perform(actionMove(selectedIDs, delta, context.projection), moveOp.annotation());
-                 context.validator().validate();
-               }
-             };
+               didResultInErrors();
+             }
+           } else {
+             didResultInSuccess(changeset);

            }
            }

+         }

 
 

-           function scaleSelection(factor) {
-             return function () {
-               // prevent scaling during low zoom selection
-               if (!context.map().withinEditableZoom()) return;
-               var nodes = utilGetAllNodes(selectedIDs, context.graph());
-               var isUp = factor > 1; // can only scale if multiple nodes are selected
+         function didResultInNoChanges() {
+           dispatch.call('resultNoChanges', this);
+           endSave();
+           context.flush(); // reset iD
+         }

 
 

-               if (nodes.length <= 1) return;
-               var extent = utilTotalExtent(selectedIDs, context.graph()); // These disabled checks would normally be handled by an operation
-               // object, but we don't want an actual scale operation at this point.
+         function didResultInErrors() {
+           context.history().pop();
+           dispatch.call('resultErrors', this, _errors);
+           endSave();
+         }

 
 

-               function scalingDisabled() {
-                 if (tooSmall()) {
-                   return 'too_small';
-                 } else if (extent.percentContainedIn(context.map().extent()) < 0.8) {
-                   return 'too_large';
-                 } else if (someMissing() || selectedIDs.some(incompleteRelation)) {
-                   return 'not_downloaded';
-                 } else if (selectedIDs.some(context.hasHiddenConnections)) {
-                   return 'connected_to_hidden';
-                 }
+         function didResultInConflicts(changeset) {
+           _conflicts.sort(function (a, b) {
+             return b.id.localeCompare(a.id);
+           });

 
 

-                 return false;
+           dispatch.call('resultConflicts', this, changeset, _conflicts, _origChanges);
+           endSave();
+         }

 
 

-                 function tooSmall() {
-                   if (isUp) return false;
-                   var dLon = Math.abs(extent[1][0] - extent[0][0]);
-                   var dLat = Math.abs(extent[1][1] - extent[0][1]);
-                   return dLon < geoMetersToLon(1, extent[1][1]) && dLat < geoMetersToLat(1);
-                 }
+         function didResultInSuccess(changeset) {
+           // delete the edit stack cached to local storage
+           context.history().clearSaved();
+           dispatch.call('resultSuccess', this, changeset); // Add delay to allow for postgres replication #1646 #2678

 
 

-                 function someMissing() {
-                   if (context.inIntro()) return false;
-                   var osm = context.connection();
+           window.setTimeout(function () {
+             endSave();
+             context.flush(); // reset iD
+           }, 2500);
+         }

 
 

-                   if (osm) {
-                     var missing = nodes.filter(function (n) {
-                       return !osm.isDataLoaded(n.loc);
-                     });
+         function endSave() {
+           _isSaving = false;
+           dispatch.call('saveEnded', this);
+         }

 
 

-                     if (missing.length) {
-                       missing.forEach(function (loc) {
-                         context.loadTileAtLoc(loc);
-                       });
-                       return true;
-                     }
-                   }
+         uploader.cancelConflictResolution = function () {
+           context.history().pop();
+         };

 
 

-                   return false;
-                 }
+         uploader.processResolvedConflicts = function (changeset) {
+           var history = context.history();

 
 

-                 function incompleteRelation(id) {
-                   var entity = context.entity(id);
-                   return entity.type === 'relation' && !entity.isComplete(context.graph());
-                 }
-               }
+           for (var i = 0; i < _conflicts.length; i++) {
+             if (_conflicts[i].chosen === 1) {
+               // user chose "use theirs"
+               var entity = context.hasEntity(_conflicts[i].id);

 
 

-               var disabled = scalingDisabled();
+               if (entity && entity.type === 'way') {
+                 var children = utilArrayUniq(entity.nodes);

 
 

-               if (disabled) {
-                 var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
-                 context.ui().flash.duration(4000).iconName('#iD-icon-no').iconClass('operation disabled').label(_t('operations.scale.' + disabled + '.' + multi))();
-               } else {
-                 var pivot = context.projection(extent.center());
-                 var annotation = _t('operations.scale.annotation.' + (isUp ? 'up' : 'down') + '.feature', {
-                   n: selectedIDs.length
-                 });
-                 context.perform(actionScale(selectedIDs, pivot, factor, context.projection), annotation);
-                 context.validator().validate();
+                 for (var j = 0; j < children.length; j++) {
+                   history.replace(actionRevert(children[j]));
+                 }

                }
                }

-             };
-           }
-
-           function didDoubleUp(d3_event, loc) {
-             if (!context.map().withinEditableZoom()) return;
-             var target = select(d3_event.target);
-             var datum = target.datum();
-             var entity = datum && datum.properties && datum.properties.entity;
-             if (!entity) return;

 
 

-             if (entity instanceof osmWay && target.classed('target')) {
-               var choice = geoChooseEdge(context.graph().childNodes(entity), loc, context.projection);
-               var prev = entity.nodes[choice.index - 1];
-               var next = entity.nodes[choice.index];
-               context.perform(actionAddMidpoint({
-                 loc: choice.loc,
-                 edge: [prev, next]
-               }, osmNode()), _t('operations.add.annotation.vertex'));
-             } else if (entity.type === 'midpoint') {
-               context.perform(actionAddMidpoint({
-                 loc: entity.loc,
-                 edge: entity.edge
-               }, osmNode()), _t('operations.add.annotation.vertex'));
+               history.replace(actionRevert(_conflicts[i].id));

              }
            }
 
              }
            }
 

-           function selectElements() {
-             if (!checkSelectedIDs()) return;
-             var surface = context.surface();
-             surface.selectAll('.selected-member').classed('selected-member', false);
-             surface.selectAll('.selected').classed('selected', false);
-             surface.selectAll('.related').classed('related', false);
-             singularParent();
+           uploader.save(changeset, true, false); // tryAgain = true, checkConflicts = false
+         };

 
 

-             if (_relatedParent) {
-               surface.selectAll(utilEntitySelector([_relatedParent])).classed('related', true);
-             }
+         uploader.reset = function () {};

 
 

-             if (context.map().withinEditableZoom()) {
-               // Apply selection styling if not in wide selection
-               surface.selectAll(utilDeepMemberSelector(selectedIDs, context.graph(), true
-               /* skipMultipolgonMembers */
-               )).classed('selected-member', true);
-               surface.selectAll(utilEntityOrDeepMemberSelector(selectedIDs, context.graph())).classed('selected', true);
-             }
-           }
+         return uploader;
+       }

 
 

-           function esc() {
-             if (context.container().select('.combobox').size()) return;
-             context.enter(modeBrowse(context));
-           }
+       var $$3 = _export;
+       var fails = fails$N;
+       var expm1 = mathExpm1;

 
 

-           function firstVertex(d3_event) {
-             d3_event.preventDefault();
-             var entity = singular();
-             var parent = singularParent();
-             var way;
+       var abs = Math.abs;
+       var exp = Math.exp;
+       var E = Math.E;

 
 

-             if (entity && entity.type === 'way') {
-               way = entity;
-             } else if (parent) {
-               way = context.entity(parent);
-             }
+       var FORCED = fails(function () {
+         // eslint-disable-next-line es/no-math-sinh -- required for testing
+         return Math.sinh(-2e-17) != -2e-17;
+       });

 
 

-             if (way) {
-               context.enter(modeSelect(context, [way.first()]).follow(true));
-             }
-           }
+       // `Math.sinh` method
+       // https://tc39.es/ecma262/#sec-math.sinh
+       // V8 near Chromium 38 has a problem with very small numbers
+       $$3({ target: 'Math', stat: true, forced: FORCED }, {
+         sinh: function sinh(x) {
+           return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
+         }
+       });

 
 

-           function lastVertex(d3_event) {
-             d3_event.preventDefault();
-             var entity = singular();
-             var parent = singularParent();
-             var way;
+       var isRetina = window.devicePixelRatio && window.devicePixelRatio >= 2; // listen for DPI change, e.g. when dragging a browser window from a retina to non-retina screen

 
 

-             if (entity && entity.type === 'way') {
-               way = entity;
-             } else if (parent) {
-               way = context.entity(parent);
-             }
+       window.matchMedia("\n        (-webkit-min-device-pixel-ratio: 2), /* Safari */\n        (min-resolution: 2dppx),             /* standard */\n        (min-resolution: 192dpi)             /* fallback */\n    ").addListener(function () {
+         isRetina = window.devicePixelRatio && window.devicePixelRatio >= 2;
+       });

 
 

-             if (way) {
-               context.enter(modeSelect(context, [way.last()]).follow(true));
-             }
-           }
+       function localeDateString(s) {
+         if (!s) return null;
+         var options = {
+           day: 'numeric',
+           month: 'short',
+           year: 'numeric'
+         };
+         var d = new Date(s);
+         if (isNaN(d.getTime())) return null;
+         return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+       }

 
 

-           function previousVertex(d3_event) {
-             d3_event.preventDefault();
-             var parent = singularParent();
-             if (!parent) return;
-             var way = context.entity(parent);
-             var length = way.nodes.length;
-             var curr = way.nodes.indexOf(selectedIDs[0]);
-             var index = -1;
+       function vintageRange(vintage) {
+         var s;

 
 

-             if (curr > 0) {
-               index = curr - 1;
-             } else if (way.isClosed()) {
-               index = length - 2;
-             }
+         if (vintage.start || vintage.end) {
+           s = vintage.start || '?';

 
 

-             if (index !== -1) {
-               context.enter(modeSelect(context, [way.nodes[index]]).follow(true));
-             }
+           if (vintage.start !== vintage.end) {
+             s += ' - ' + (vintage.end || '?');

            }
            }

+         }

 
 

-           function nextVertex(d3_event) {
-             d3_event.preventDefault();
-             var parent = singularParent();
-             if (!parent) return;
-             var way = context.entity(parent);
-             var length = way.nodes.length;
-             var curr = way.nodes.indexOf(selectedIDs[0]);
-             var index = -1;
+         return s;
+       }

 
 

-             if (curr < length - 1) {
-               index = curr + 1;
-             } else if (way.isClosed()) {
-               index = 0;
-             }
+       function rendererBackgroundSource(data) {
+         var source = Object.assign({}, data); // shallow copy

 
 

-             if (index !== -1) {
-               context.enter(modeSelect(context, [way.nodes[index]]).follow(true));
-             }
-           }
+         var _offset = [0, 0];
+         var _name = source.name;
+         var _description = source.description;

 
 

-           function nextParent(d3_event) {
-             d3_event.preventDefault();
-             var parents = commonParents();
-             if (!parents || parents.length < 2) return;
-             var index = parents.indexOf(_relatedParent);
+         var _best = !!source.best;

 
 

-             if (index < 0 || index > parents.length - 2) {
-               _relatedParent = parents[0];
-             } else {
-               _relatedParent = parents[index + 1];
-             }
+         var _template = source.encrypted ? utilAesDecrypt(source.template) : source.template;

 
 

-             var surface = context.surface();
-             surface.selectAll('.related').classed('related', false);
+         source.tileSize = data.tileSize || 256;
+         source.zoomExtent = data.zoomExtent || [0, 22];
+         source.overzoom = data.overzoom !== false;

 
 

-             if (_relatedParent) {
-               surface.selectAll(utilEntitySelector([_relatedParent])).classed('related', true);
-             }
-           }
+         source.offset = function (val) {
+           if (!arguments.length) return _offset;
+           _offset = val;
+           return source;

          };
 
          };
 

-         mode.exit = function () {
-           _newFeature = false;
+         source.nudge = function (val, zoomlevel) {
+           _offset[0] += val[0] / Math.pow(2, zoomlevel);
+           _offset[1] += val[1] / Math.pow(2, zoomlevel);
+           return source;
+         };

 
 

-           _operations.forEach(function (operation) {
-             if (operation.behavior) {
-               context.uninstall(operation.behavior);
-             }
+         source.name = function () {
+           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
+           return _t('imagery.' + id_safe + '.name', {
+             "default": _name

            });
            });

+         };

 
 

-           _operations = [];
-
-           _behaviors.forEach(context.uninstall);
+         source.label = function () {
+           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
+           return _t.html('imagery.' + id_safe + '.name', {
+             "default": _name
+           });
+         };

 
 

-           select(document).call(keybinding.unbind);
-           context.ui().closeEditMenu();
-           context.history().on('change.select', null).on('undone.select', null).on('redone.select', null);
-           var surface = context.surface();
-           surface.selectAll('.selected-member').classed('selected-member', false);
-           surface.selectAll('.selected').classed('selected', false);
-           surface.selectAll('.highlighted').classed('highlighted', false);
-           surface.selectAll('.related').classed('related', false);
-           context.map().on('drawn.select', null);
-           context.ui().sidebar.hide();
-           context.features().forceVisible([]);
-           var entity = singular();
+         source.description = function () {
+           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
+           return _t.html('imagery.' + id_safe + '.description', {
+             "default": _description
+           });
+         };

 
 

-           if (_newFeature && entity && entity.type === 'relation' && // no tags
-           Object.keys(entity.tags).length === 0 && // no parent relations
-           context.graph().parentRelations(entity).length === 0 && ( // no members or one member with no role
-           entity.members.length === 0 || entity.members.length === 1 && !entity.members[0].role)) {
-             // the user added this relation but didn't edit it at all, so just delete it
-             var deleteAction = actionDeleteRelation(entity.id, true
-             /* don't delete untagged members */
-             );
-             context.perform(deleteAction, _t('operations.delete.annotation.relation'));
-           }
+         source.best = function () {
+           return _best;

          };
 
          };
 

-         return mode;
-       }
+         source.area = function () {
+           if (!data.polygon) return Number.MAX_VALUE; // worldwide

 
 

-       function uiLasso(context) {
-         var group, polygon;
-         lasso.coordinates = [];
+           var area = d3_geoArea({
+             type: 'MultiPolygon',
+             coordinates: [data.polygon]
+           });
+           return isNaN(area) ? 0 : area;
+         };

 
 

-         function lasso(selection) {
-           context.container().classed('lasso', true);
-           group = selection.append('g').attr('class', 'lasso hide');
-           polygon = group.append('path').attr('class', 'lasso-path');
-           group.call(uiToggle(true));
-         }
+         source.imageryUsed = function () {
+           return _name || source.id;
+         };

 
 

-         function draw() {
-           if (polygon) {
-             polygon.data([lasso.coordinates]).attr('d', function (d) {
-               return 'M' + d.join(' L') + ' Z';
-             });
+         source.template = function (val) {
+           if (!arguments.length) return _template;
+
+           if (source.id === 'custom' || source.id === 'Bing') {
+             _template = val;

            }
            }

-         }

 
 

-         lasso.extent = function () {
-           return lasso.coordinates.reduce(function (extent, point) {
-             return extent.extend(geoExtent(point));
-           }, geoExtent());
+           return source;

          };
 
          };
 

-         lasso.p = function (_) {
-           if (!arguments.length) return lasso;
-           lasso.coordinates.push(_);
-           draw();
-           return lasso;
-         };
+         source.url = function (coord) {
+           var result = _template;
+           if (result === '') return result; // source 'none'
+           // Guess a type based on the tokens present in the template
+           // (This is for 'custom' source, where we don't know)

 
 

-         lasso.close = function () {
-           if (group) {
-             group.call(uiToggle(false, function () {
-               select(this).remove();
-             }));
+           if (!source.type) {
+             if (/SERVICE=WMS|\{(proj|wkid|bbox)\}/.test(_template)) {
+               source.type = 'wms';
+               source.projection = 'EPSG:3857'; // guess
+             } else if (/\{(x|y)\}/.test(_template)) {
+               source.type = 'tms';
+             } else if (/\{u\}/.test(_template)) {
+               source.type = 'bing';
+             }

            }
 
            }
 

-           context.container().classed('lasso', false);
-         };
+           if (source.type === 'wms') {
+             var tileToProjectedCoords = function tileToProjectedCoords(x, y, z) {
+               //polyfill for IE11, PhantomJS
+               var sinh = Math.sinh || function (x) {
+                 var y = Math.exp(x);
+                 return (y - 1 / y) / 2;
+               };

 
 

-         return lasso;
-       }
+               var zoomSize = Math.pow(2, z);
+               var lon = x / zoomSize * Math.PI * 2 - Math.PI;
+               var lat = Math.atan(sinh(Math.PI * (1 - 2 * y / zoomSize)));

 
 

-       function behaviorLasso(context) {
-         // use pointer events on supported platforms; fallback to mouse events
-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+               switch (source.projection) {
+                 case 'EPSG:4326':
+                   return {
+                     x: lon * 180 / Math.PI,
+                     y: lat * 180 / Math.PI
+                   };

 
 

-         var behavior = function behavior(selection) {
-           var lasso;
+                 default:
+                   // EPSG:3857 and synonyms
+                   var mercCoords = mercatorRaw(lon, lat);
+                   return {
+                     x: 20037508.34 / Math.PI * mercCoords[0],
+                     y: 20037508.34 / Math.PI * mercCoords[1]
+                   };
+               }
+             };

 
 

-           function pointerdown(d3_event) {
-             var button = 0; // left
+             var tileSize = source.tileSize;
+             var projection = source.projection;
+             var minXmaxY = tileToProjectedCoords(coord[0], coord[1], coord[2]);
+             var maxXminY = tileToProjectedCoords(coord[0] + 1, coord[1] + 1, coord[2]);
+             result = result.replace(/\{(\w+)\}/g, function (token, key) {
+               switch (key) {
+                 case 'width':
+                 case 'height':
+                   return tileSize;

 
 

-             if (d3_event.button === button && d3_event.shiftKey === true) {
-               lasso = null;
-               select(window).on(_pointerPrefix + 'move.lasso', pointermove).on(_pointerPrefix + 'up.lasso', pointerup);
-               d3_event.stopPropagation();
-             }
-           }
+                 case 'proj':
+                   return projection;

 
 

-           function pointermove() {
-             if (!lasso) {
-               lasso = uiLasso(context);
-               context.surface().call(lasso);
-             }
+                 case 'wkid':
+                   return projection.replace(/^EPSG:/, '');

 
 

-             lasso.p(context.map().mouse());
-           }
+                 case 'bbox':
+                   // WMS 1.3 flips x/y for some coordinate systems including EPSG:4326 - #7557
+                   if (projection === 'EPSG:4326' && // The CRS parameter implies version 1.3 (prior versions use SRS)
+                   /VERSION=1.3|CRS={proj}/.test(source.template().toUpperCase())) {
+                     return maxXminY.y + ',' + minXmaxY.x + ',' + minXmaxY.y + ',' + maxXminY.x;
+                   } else {
+                     return minXmaxY.x + ',' + maxXminY.y + ',' + maxXminY.x + ',' + minXmaxY.y;
+                   }

 
 

-           function normalize(a, b) {
-             return [[Math.min(a[0], b[0]), Math.min(a[1], b[1])], [Math.max(a[0], b[0]), Math.max(a[1], b[1])]];
-           }
+                 case 'w':
+                   return minXmaxY.x;

 
 

-           function lassoed() {
-             if (!lasso) return [];
-             var graph = context.graph();
-             var limitToNodes;
+                 case 's':
+                   return maxXminY.y;

 
 

-             if (context.map().editableDataEnabled(true
-             /* skipZoomCheck */
-             ) && context.map().isInWideSelection()) {
-               // only select from the visible nodes
-               limitToNodes = new Set(utilGetAllNodes(context.selectedIDs(), graph));
-             } else if (!context.map().editableDataEnabled()) {
-               return [];
-             }
+                 case 'n':
+                   return maxXminY.x;

 
 

-             var bounds = lasso.extent().map(context.projection.invert);
-             var extent = geoExtent(normalize(bounds[0], bounds[1]));
-             var intersects = context.history().intersects(extent).filter(function (entity) {
-               return entity.type === 'node' && (!limitToNodes || limitToNodes.has(entity)) && geoPointInPolygon(context.projection(entity.loc), lasso.coordinates) && !context.features().isHidden(entity, graph, entity.geometry(graph));
-             }); // sort the lassoed nodes as best we can
+                 case 'e':
+                   return minXmaxY.y;

 
 

-             intersects.sort(function (node1, node2) {
-               var parents1 = graph.parentWays(node1);
-               var parents2 = graph.parentWays(node2);
+                 default:
+                   return token;
+               }
+             });
+           } else if (source.type === 'tms') {
+             result = result.replace('{x}', coord[0]).replace('{y}', coord[1]) // TMS-flipped y coordinate
+             .replace(/\{[t-]y\}/, Math.pow(2, coord[2]) - coord[1] - 1).replace(/\{z(oom)?\}/, coord[2]) // only fetch retina tiles for retina screens
+             .replace(/\{@2x\}|\{r\}/, isRetina ? '@2x' : '');
+           } else if (source.type === 'bing') {
+             result = result.replace('{u}', function () {
+               var u = '';

 
 

-               if (parents1.length && parents2.length) {
-                 // both nodes are vertices
-                 var sharedParents = utilArrayIntersection(parents1, parents2);
+               for (var zoom = coord[2]; zoom > 0; zoom--) {
+                 var b = 0;
+                 var mask = 1 << zoom - 1;
+                 if ((coord[0] & mask) !== 0) b++;
+                 if ((coord[1] & mask) !== 0) b += 2;
+                 u += b.toString();
+               }

 
 

-                 if (sharedParents.length) {
-                   var sharedParentNodes = sharedParents[0].nodes; // vertices are members of the same way; sort them in their listed order
+               return u;
+             });
+           } // these apply to any type..

 
 

-                   return sharedParentNodes.indexOf(node1.id) - sharedParentNodes.indexOf(node2.id);
-                 } else {
-                   // vertices do not share a way; group them by their respective parent ways
-                   return parseFloat(parents1[0].id.slice(1)) - parseFloat(parents2[0].id.slice(1));
-                 }
-               } else if (parents1.length || parents2.length) {
-                 // only one node is a vertex; sort standalone points before vertices
-                 return parents1.length - parents2.length;
-               } // both nodes are standalone points; sort left to right

 
 

+           result = result.replace(/\{switch:([^}]+)\}/, function (s, r) {
+             var subdomains = r.split(',');
+             return subdomains[(coord[0] + coord[1]) % subdomains.length];
+           });
+           return result;
+         };

 
 

-               return node1.loc[0] - node2.loc[0];
-             });
-             return intersects.map(function (entity) {
-               return entity.id;
-             });
-           }
+         source.validZoom = function (z) {
+           return source.zoomExtent[0] <= z && (source.overzoom || source.zoomExtent[1] > z);
+         };

 
 

-           function pointerup() {
-             select(window).on(_pointerPrefix + 'move.lasso', null).on(_pointerPrefix + 'up.lasso', null);
-             if (!lasso) return;
-             var ids = lassoed();
-             lasso.close();
+         source.isLocatorOverlay = function () {
+           return source.id === 'mapbox_locator_overlay';
+         };
+         /* hides a source from the list, but leaves it available for use */

 
 

-             if (ids.length) {
-               context.enter(modeSelect(context, ids));
-             }
-           }

 
 

-           selection.on(_pointerPrefix + 'down.lasso', pointerdown);
+         source.isHidden = function () {
+           return source.id === 'DigitalGlobe-Premium-vintage' || source.id === 'DigitalGlobe-Standard-vintage';

          };
 
          };
 

-         behavior.off = function (selection) {
-           selection.on(_pointerPrefix + 'down.lasso', null);
+         source.copyrightNotices = function () {};
+
+         source.getMetadata = function (center, tileCoord, callback) {
+           var vintage = {
+             start: localeDateString(source.startDate),
+             end: localeDateString(source.endDate)
+           };
+           vintage.range = vintageRange(vintage);
+           var metadata = {
+             vintage: vintage
+           };
+           callback(null, metadata);

          };
 
          };
 

-         return behavior;
+         return source;

        }
 
        }
 

-       function modeBrowse(context) {
-         var mode = {
-           button: 'browse',
-           id: 'browse',
-           title: _t('modes.browse.title'),
-           description: _t('modes.browse.description')
-         };
-         var sidebar;
+       rendererBackgroundSource.Bing = function (data, dispatch) {
+         // https://docs.microsoft.com/en-us/bingmaps/rest-services/imagery/get-imagery-metadata
+         // https://docs.microsoft.com/en-us/bingmaps/rest-services/directly-accessing-the-bing-maps-tiles
+         //fallback url template
+         data.template = 'https://ecn.t{switch:0,1,2,3}.tiles.virtualearth.net/tiles/a{u}.jpeg?g=587&n=z';
+         var bing = rendererBackgroundSource(data); //var key = 'Arzdiw4nlOJzRwOz__qailc8NiR31Tt51dN2D7cm57NrnceZnCpgOkmJhNpGoppU'; // P2, JOSM, etc

 
 

-         var _selectBehavior;
+         var key = 'Ak5oTE46TUbjRp08OFVcGpkARErDobfpuyNKa-W2mQ8wbt1K1KL8p1bIRwWwcF-Q'; // iD

 
 

-         var _behaviors = [];
+         /*
+         missing tile image strictness param (n=)
+         •   n=f -> (Fail) returns a 404
+         •   n=z -> (Empty) returns a 200 with 0 bytes (no content)
+         •   n=t -> (Transparent) returns a 200 with a transparent (png) tile
+         */

 
 

-         mode.selectBehavior = function (val) {
-           if (!arguments.length) return _selectBehavior;
-           _selectBehavior = val;
-           return mode;
-         };
+         var strictParam = 'n';
+         var url = 'https://dev.virtualearth.net/REST/v1/Imagery/Metadata/Aerial?include=ImageryProviders&uriScheme=https&key=' + key;
+         var cache = {};
+         var inflight = {};
+         var providers = [];
+         d3_json(url).then(function (json) {
+           var imageryResource = json.resourceSets[0].resources[0]; //retrieve and prepare up to date imagery template

 
 

-         mode.enter = function () {
-           if (!_behaviors.length) {
-             if (!_selectBehavior) _selectBehavior = behaviorSelect(context);
-             _behaviors = [behaviorPaste(context), behaviorHover(context).on('hover', context.ui().sidebar.hover), _selectBehavior, behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
-           }
+           var template = imageryResource.imageUrl; //https://ecn.{subdomain}.tiles.virtualearth.net/tiles/a{quadkey}.jpeg?g=10339

 
 

-           _behaviors.forEach(context.install); // Get focus on the body.
+           var subDomains = imageryResource.imageUrlSubdomains; //["t0, t1, t2, t3"]

 
 

+           var subDomainNumbers = subDomains.map(function (subDomain) {
+             return subDomain.substring(1);
+           }).join(',');
+           template = template.replace('{subdomain}', "t{switch:".concat(subDomainNumbers, "}")).replace('{quadkey}', '{u}');

 
 

-           if (document.activeElement && document.activeElement.blur) {
-             document.activeElement.blur();
+           if (!new URLSearchParams(template).has(strictParam)) {
+             template += "&".concat(strictParam, "=z");

            }
 
            }
 

-           if (sidebar) {
-             context.ui().sidebar.show(sidebar);
-           } else {
-             context.ui().sidebar.select(null);
-           }
+           bing.template(template);
+           providers = imageryResource.imageryProviders.map(function (provider) {
+             return {
+               attribution: provider.attribution,
+               areas: provider.coverageAreas.map(function (area) {
+                 return {
+                   zoom: [area.zoomMin, area.zoomMax],
+                   extent: geoExtent([area.bbox[1], area.bbox[0]], [area.bbox[3], area.bbox[2]])
+                 };
+               })
+             };
+           });
+           dispatch.call('change');
+         })["catch"](function () {
+           /* ignore */
+         });
+
+         bing.copyrightNotices = function (zoom, extent) {
+           zoom = Math.min(zoom, 21);
+           return providers.filter(function (provider) {
+             return provider.areas.some(function (area) {
+               return extent.intersects(area.extent) && area.zoom[0] <= zoom && area.zoom[1] >= zoom;
+             });
+           }).map(function (provider) {
+             return provider.attribution;
+           }).join(', ');

          };
 
          };
 

-         mode.exit = function () {
-           context.ui().sidebar.hover.cancel();
+         bing.getMetadata = function (center, tileCoord, callback) {
+           var tileID = tileCoord.slice(0, 3).join('/');
+           var zoom = Math.min(tileCoord[2], 21);
+           var centerPoint = center[1] + ',' + center[0]; // lat,lng

 
 

-           _behaviors.forEach(context.uninstall);
+           var url = 'https://dev.virtualearth.net/REST/v1/Imagery/Metadata/Aerial/' + centerPoint + '?zl=' + zoom + '&key=' + key;
+           if (inflight[tileID]) return;

 
 

-           if (sidebar) {
-             context.ui().sidebar.hide();
+           if (!cache[tileID]) {
+             cache[tileID] = {};

            }
            }

-         };

 
 

-         mode.sidebar = function (_) {
-           if (!arguments.length) return sidebar;
-           sidebar = _;
-           return mode;
-         };
+           if (cache[tileID] && cache[tileID].metadata) {
+             return callback(null, cache[tileID].metadata);
+           }

 
 

-         mode.operations = function () {
-           return [operationPaste(context)];
-         };
+           inflight[tileID] = true;
+           d3_json(url).then(function (result) {
+             delete inflight[tileID];

 
 

-         return mode;
-       }
+             if (!result) {
+               throw new Error('Unknown Error');
+             }

 
 

-       function behaviorAddWay(context) {
-         var dispatch$1 = dispatch('start', 'startFromWay', 'startFromNode');
-         var draw = behaviorDraw(context);
+             var vintage = {
+               start: localeDateString(result.resourceSets[0].resources[0].vintageStart),
+               end: localeDateString(result.resourceSets[0].resources[0].vintageEnd)
+             };
+             vintage.range = vintageRange(vintage);
+             var metadata = {
+               vintage: vintage
+             };
+             cache[tileID].metadata = metadata;
+             if (callback) callback(null, metadata);
+           })["catch"](function (err) {
+             delete inflight[tileID];
+             if (callback) callback(err.message);
+           });
+         };

 
 

-         function behavior(surface) {
-           draw.on('click', function () {
-             dispatch$1.apply('start', this, arguments);
-           }).on('clickWay', function () {
-             dispatch$1.apply('startFromWay', this, arguments);
-           }).on('clickNode', function () {
-             dispatch$1.apply('startFromNode', this, arguments);
-           }).on('cancel', behavior.cancel).on('finish', behavior.cancel);
-           context.map().dblclickZoomEnable(false);
-           surface.call(draw);
+         bing.terms_url = 'https://blog.openstreetmap.org/2010/11/30/microsoft-imagery-details';
+         return bing;
+       };
+
+       rendererBackgroundSource.Esri = function (data) {
+         // in addition to using the tilemap at zoom level 20, overzoom real tiles - #4327 (deprecated technique, but it works)
+         if (data.template.match(/blankTile/) === null) {
+           data.template = data.template + '?blankTile=false';

          }
 
          }
 

-         behavior.off = function (surface) {
-           surface.call(draw.off);
-         };
+         var esri = rendererBackgroundSource(data);
+         var cache = {};
+         var inflight = {};

 
 

-         behavior.cancel = function () {
-           window.setTimeout(function () {
-             context.map().dblclickZoomEnable(true);
-           }, 1000);
-           context.enter(modeBrowse(context));
-         };
+         var _prevCenter; // use a tilemap service to set maximum zoom for esri tiles dynamically
+         // https://developers.arcgis.com/documentation/tiled-elevation-service/

 
 

-         return utilRebind(behavior, dispatch$1, 'on');
-       }

 
 

-       function behaviorHash(context) {
-         // cached window.location.hash
-         var _cachedHash = null; // allowable latitude range
+         esri.fetchTilemap = function (center) {
+           // skip if we have already fetched a tilemap within 5km
+           if (_prevCenter && geoSphericalDistance(center, _prevCenter) < 5000) return;
+           _prevCenter = center; // tiles are available globally to zoom level 19, afterward they may or may not be present

 
 

-         var _latitudeLimit = 90 - 1e-8;
+           var z = 20; // first generate a random url using the template

 
 

-         function computedHashParameters() {
-           var map = context.map();
-           var center = map.center();
-           var zoom = map.zoom();
-           var precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
-           var oldParams = utilObjectOmit(utilStringQs(window.location.hash), ['comment', 'source', 'hashtags', 'walkthrough']);
-           var newParams = {};
-           delete oldParams.id;
-           var selected = context.selectedIDs().filter(function (id) {
-             return context.hasEntity(id);
-           });
+           var dummyUrl = esri.url([1, 2, 3]); // calculate url z/y/x from the lat/long of the center of the map

 
 

-           if (selected.length) {
-             newParams.id = selected.join(',');
-           }
+           var x = Math.floor((center[0] + 180) / 360 * Math.pow(2, z));
+           var y = Math.floor((1 - Math.log(Math.tan(center[1] * Math.PI / 180) + 1 / Math.cos(center[1] * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, z)); // fetch an 8x8 grid to leverage cache

 
 

-           newParams.map = zoom.toFixed(2) + '/' + center[1].toFixed(precision) + '/' + center[0].toFixed(precision);
-           return Object.assign(oldParams, newParams);
-         }
+           var tilemapUrl = dummyUrl.replace(/tile\/[0-9]+\/[0-9]+\/[0-9]+\?blankTile=false/, 'tilemap') + '/' + z + '/' + y + '/' + x + '/8/8'; // make the request and introspect the response from the tilemap server

 
 

-         function computedHash() {
-           return '#' + utilQsString(computedHashParameters(), true);
-         }
+           d3_json(tilemapUrl).then(function (tilemap) {
+             if (!tilemap) {
+               throw new Error('Unknown Error');
+             }

 
 

-         function computedTitle(includeChangeCount) {
-           var baseTitle = context.documentTitleBase() || 'iD';
-           var contextual;
-           var changeCount;
-           var titleID;
-           var selected = context.selectedIDs().filter(function (id) {
-             return context.hasEntity(id);
-           });
+             var hasTiles = true;

 
 

-           if (selected.length) {
-             var firstLabel = utilDisplayLabel(context.entity(selected[0]), context.graph());
+             for (var i = 0; i < tilemap.data.length; i++) {
+               // 0 means an individual tile in the grid doesn't exist
+               if (!tilemap.data[i]) {
+                 hasTiles = false;
+                 break;
+               }
+             } // if any tiles are missing at level 20 we restrict maxZoom to 19

 
 

-             if (selected.length > 1) {
-               contextual = _t('title.labeled_and_more', {
-                 labeled: firstLabel,
-                 count: selected.length - 1
-               });
-             } else {
-               contextual = firstLabel;
-             }

 
 

-             titleID = 'context';
-           }
+             esri.zoomExtent[1] = hasTiles ? 22 : 19;
+           })["catch"](function () {
+             /* ignore */
+           });
+         };

 
 

-           if (includeChangeCount) {
-             changeCount = context.history().difference().summary().length;
+         esri.getMetadata = function (center, tileCoord, callback) {
+           var tileID = tileCoord.slice(0, 3).join('/');
+           var zoom = Math.min(tileCoord[2], esri.zoomExtent[1]);
+           var centerPoint = center[0] + ',' + center[1]; // long, lat (as it should be)

 
 

-             if (changeCount > 0) {
-               titleID = contextual ? 'changes_context' : 'changes';
-             }
-           }
+           var unknown = _t('info_panels.background.unknown');
+           var metadataLayer;
+           var vintage = {};
+           var metadata = {};
+           if (inflight[tileID]) return;

 
 

-           if (titleID) {
-             return _t('title.format.' + titleID, {
-               changes: changeCount,
-               base: baseTitle,
-               context: contextual
-             });
-           }
+           switch (true) {
+             case zoom >= 20 && esri.id === 'EsriWorldImageryClarity':
+               metadataLayer = 4;
+               break;

 
 

-           return baseTitle;
-         }
+             case zoom >= 19:
+               metadataLayer = 3;
+               break;

 
 

-         function updateTitle(includeChangeCount) {
-           if (!context.setsDocumentTitle()) return;
-           var newTitle = computedTitle(includeChangeCount);
+             case zoom >= 17:
+               metadataLayer = 2;
+               break;

 
 

-           if (document.title !== newTitle) {
-             document.title = newTitle;
+             case zoom >= 13:
+               metadataLayer = 0;
+               break;
+
+             default:
+               metadataLayer = 99;

            }
            }

-         }

 
 

-         function updateHashIfNeeded() {
-           if (context.inIntro()) return;
-           var latestHash = computedHash();
+           var url; // build up query using the layer appropriate to the current zoom

 
 

-           if (_cachedHash !== latestHash) {
-             _cachedHash = latestHash; // Update the URL hash without affecting the browser navigation stack,
-             // though unavoidably creating a browser history entry
+           if (esri.id === 'EsriWorldImagery') {
+             url = 'https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/';
+           } else if (esri.id === 'EsriWorldImageryClarity') {
+             url = 'https://serviceslab.arcgisonline.com/arcgis/rest/services/Clarity_World_Imagery/MapServer/';
+           }

 
 

-             window.history.replaceState(null, computedTitle(false
-             /* includeChangeCount */
-             ), latestHash); // set the title we want displayed for the browser tab/window
+           url += metadataLayer + '/query?returnGeometry=false&geometry=' + centerPoint + '&inSR=4326&geometryType=esriGeometryPoint&outFields=*&f=json';

 
 

-             updateTitle(true
-             /* includeChangeCount */
-             );
+           if (!cache[tileID]) {
+             cache[tileID] = {};

            }
            }

-         }

 
 

-         var _throttledUpdate = throttle(updateHashIfNeeded, 500);
-
-         var _throttledUpdateTitle = throttle(function () {
-           updateTitle(true
-           /* includeChangeCount */
-           );
-         }, 500);
+           if (cache[tileID] && cache[tileID].metadata) {
+             return callback(null, cache[tileID].metadata);
+           } // accurate metadata is only available >= 13

 
 

-         function hashchange() {
-           // ignore spurious hashchange events
-           if (window.location.hash === _cachedHash) return;
-           _cachedHash = window.location.hash;
-           var q = utilStringQs(_cachedHash);
-           var mapArgs = (q.map || '').split('/').map(Number);

 
 

-           if (mapArgs.length < 3 || mapArgs.some(isNaN)) {
-             // replace bogus hash
-             updateHashIfNeeded();
+           if (metadataLayer === 99) {
+             vintage = {
+               start: null,
+               end: null,
+               range: null
+             };
+             metadata = {
+               vintage: null,
+               source: unknown,
+               description: unknown,
+               resolution: unknown,
+               accuracy: unknown
+             };
+             callback(null, metadata);

            } else {
            } else {

-             // don't update if the new hash already reflects the state of iD
-             if (_cachedHash === computedHash()) return;
-             var mode = context.mode();
-             context.map().centerZoom([mapArgs[2], Math.min(_latitudeLimit, Math.max(-_latitudeLimit, mapArgs[1]))], mapArgs[0]);
+             inflight[tileID] = true;
+             d3_json(url).then(function (result) {
+               delete inflight[tileID];

 
 

-             if (q.id && mode) {
-               var ids = q.id.split(',').filter(function (id) {
-                 return context.hasEntity(id);
-               });
+               if (!result) {
+                 throw new Error('Unknown Error');
+               } else if (result.features && result.features.length < 1) {
+                 throw new Error('No Results');
+               } else if (result.error && result.error.message) {
+                 throw new Error(result.error.message);
+               } // pass through the discrete capture date from metadata

 
 

-               if (ids.length && (mode.id === 'browse' || mode.id === 'select' && !utilArrayIdentical(mode.selectedIDs(), ids))) {
-                 context.enter(modeSelect(context, ids));
-                 return;
+
+               var captureDate = localeDateString(result.features[0].attributes.SRC_DATE2);
+               vintage = {
+                 start: captureDate,
+                 end: captureDate,
+                 range: captureDate
+               };
+               metadata = {
+                 vintage: vintage,
+                 source: clean(result.features[0].attributes.NICE_NAME),
+                 description: clean(result.features[0].attributes.NICE_DESC),
+                 resolution: clean(+parseFloat(result.features[0].attributes.SRC_RES).toFixed(4)),
+                 accuracy: clean(+parseFloat(result.features[0].attributes.SRC_ACC).toFixed(4))
+               }; // append units - meters
+
+               if (isFinite(metadata.resolution)) {
+                 metadata.resolution += ' m';
+               }
+
+               if (isFinite(metadata.accuracy)) {
+                 metadata.accuracy += ' m';

                }
                }

-             }

 
 

-             var center = context.map().center();
-             var dist = geoSphericalDistance(center, [mapArgs[2], mapArgs[1]]);
-             var maxdist = 500; // Don't allow the hash location to change too much while drawing
-             // This can happen if the user accidentally hit the back button.  #3996
+               cache[tileID].metadata = metadata;
+               if (callback) callback(null, metadata);
+             })["catch"](function (err) {
+               delete inflight[tileID];
+               if (callback) callback(err.message);
+             });
+           }

 
 

-             if (mode && mode.id.match(/^draw/) !== null && dist > maxdist) {
-               context.enter(modeBrowse(context));
-               return;
-             }
+           function clean(val) {
+             return String(val).trim() || unknown;

            }
            }

-         }
+         };

 
 

-         function behavior() {
-           context.map().on('move.behaviorHash', _throttledUpdate);
-           context.history().on('change.behaviorHash', _throttledUpdateTitle);
-           context.on('enter.behaviorHash', _throttledUpdate);
-           select(window).on('hashchange.behaviorHash', hashchange);
+         return esri;
+       };

 
 

-           if (window.location.hash) {
-             var q = utilStringQs(window.location.hash);
+       rendererBackgroundSource.None = function () {
+         var source = rendererBackgroundSource({
+           id: 'none',
+           template: ''
+         });

 
 

-             if (q.id) {
-               //if (!context.history().hasRestorableChanges()) {
-               // targeting specific features: download, select, and zoom to them
-               context.zoomToEntity(q.id.split(',')[0], !q.map); //}
-             }
+         source.name = function () {
+           return _t('background.none');
+         };

 
 

-             if (q.walkthrough === 'true') {
-               behavior.startWalkthrough = true;
-             }
+         source.label = function () {
+           return _t.html('background.none');
+         };

 
 

-             if (q.map) {
-               behavior.hadHash = true;
-             }
+         source.imageryUsed = function () {
+           return null;
+         };

 
 

-             hashchange();
-             updateTitle(false);
-           }
-         }
+         source.area = function () {
+           return -1; // sources in background pane are sorted by area
+         };

 
 

-         behavior.off = function () {
-           _throttledUpdate.cancel();
+         return source;
+       };

 
 

-           _throttledUpdateTitle.cancel();
+       rendererBackgroundSource.Custom = function (template) {
+         var source = rendererBackgroundSource({
+           id: 'custom',
+           template: template
+         });

 
 

-           context.map().on('move.behaviorHash', null);
-           context.on('enter.behaviorHash', null);
-           select(window).on('hashchange.behaviorHash', null);
-           window.location.hash = '';
+         source.name = function () {
+           return _t('background.custom');

          };
 
          };
 

-         return behavior;
-       }
+         source.label = function () {
+           return _t.html('background.custom');
+         };

 
 

-       /*
-           iD.coreDifference represents the difference between two graphs.
-           It knows how to calculate the set of entities that were
-           created, modified, or deleted, and also contains the logic
-           for recursively extending a difference to the complete set
-           of entities that will require a redraw, taking into account
-           child and parent relationships.
-        */
+         source.imageryUsed = function () {
+           // sanitize personal connection tokens - #6801
+           var cleaned = source.template(); // from query string parameters

 
 

-       function coreDifference(base, head) {
-         var _changes = {};
-         var _didChange = {}; // 'addition', 'deletion', 'geometry', 'properties'
+           if (cleaned.indexOf('?') !== -1) {
+             var parts = cleaned.split('?', 2);
+             var qs = utilStringQs(parts[1]);
+             ['access_token', 'connectId', 'token'].forEach(function (param) {
+               if (qs[param]) {
+                 qs[param] = '{apikey}';
+               }
+             });
+             cleaned = parts[0] + '?' + utilQsString(qs, true); // true = soft encode
+           } // from wms/wmts api path parameters

 
 

-         var _diff = {};

 
 

-         function checkEntityID(id) {
-           var h = head.entities[id];
-           var b = base.entities[id];
-           if (h === b) return;
-           if (_changes[id]) return;
+           cleaned = cleaned.replace(/token\/(\w+)/, 'token/{apikey}');
+           return 'Custom (' + cleaned + ' )';
+         };

 
 

-           if (!h && b) {
-             _changes[id] = {
-               base: b,
-               head: h
-             };
-             _didChange.deletion = true;
-             return;
-           }
+         source.area = function () {
+           return -2; // sources in background pane are sorted by area
+         };

 
 

-           if (h && !b) {
-             _changes[id] = {
-               base: b,
-               head: h
-             };
-             _didChange.addition = true;
-             return;
-           }
+         return source;
+       };

 
 

-           if (h && b) {
-             if (h.members && b.members && !fastDeepEqual(h.members, b.members)) {
-               _changes[id] = {
-                 base: b,
-                 head: h
-               };
-               _didChange.geometry = true;
-               _didChange.properties = true;
-               return;
-             }
+       function rendererTileLayer(context) {
+         var transformProp = utilPrefixCSSProperty('Transform');
+         var tiler = utilTiler();
+         var _tileSize = 256;

 
 

-             if (h.loc && b.loc && !geoVecEqual(h.loc, b.loc)) {
-               _changes[id] = {
-                 base: b,
-                 head: h
-               };
-               _didChange.geometry = true;
-             }
+         var _projection;

 
 

-             if (h.nodes && b.nodes && !fastDeepEqual(h.nodes, b.nodes)) {
-               _changes[id] = {
-                 base: b,
-                 head: h
-               };
-               _didChange.geometry = true;
-             }
+         var _cache = {};

 
 

-             if (h.tags && b.tags && !fastDeepEqual(h.tags, b.tags)) {
-               _changes[id] = {
-                 base: b,
-                 head: h
-               };
-               _didChange.properties = true;
-             }
-           }
-         }
+         var _tileOrigin;

 
 

-         function load() {
-           // HOT CODE: there can be many thousands of downloaded entities, so looping
-           // through them all can become a performance bottleneck. Optimize by
-           // resolving duplicates and using a basic `for` loop
-           var ids = utilArrayUniq(Object.keys(head.entities).concat(Object.keys(base.entities)));
+         var _zoom;

 
 

-           for (var i = 0; i < ids.length; i++) {
-             checkEntityID(ids[i]);
-           }
-         }
+         var _source;

 
 

-         load();
+         function tileSizeAtZoom(d, z) {
+           var EPSILON = 0.002; // close seams

 
 

-         _diff.length = function length() {
-           return Object.keys(_changes).length;
-         };
+           return _tileSize * Math.pow(2, z - d[2]) / _tileSize + EPSILON;
+         }

 
 

-         _diff.changes = function changes() {
-           return _changes;
-         };
+         function atZoom(t, distance) {
+           var power = Math.pow(2, distance);
+           return [Math.floor(t[0] * power), Math.floor(t[1] * power), t[2] + distance];
+         }

 
 

-         _diff.didChange = _didChange; // pass true to include affected relation members
+         function lookUp(d) {
+           for (var up = -1; up > -d[2]; up--) {
+             var tile = atZoom(d, up);

 
 

-         _diff.extantIDs = function extantIDs(includeRelMembers) {
-           var result = new Set();
-           Object.keys(_changes).forEach(function (id) {
-             if (_changes[id].head) {
-               result.add(id);
+             if (_cache[_source.url(tile)] !== false) {
+               return tile;

              }
              }

+           }
+         }

 
 

-             var h = _changes[id].head;
-             var b = _changes[id].base;
-             var entity = h || b;
+         function uniqueBy(a, n) {
+           var o = [];
+           var seen = {};

 
 

-             if (includeRelMembers && entity.type === 'relation') {
-               var mh = h ? h.members.map(function (m) {
-                 return m.id;
-               }) : [];
-               var mb = b ? b.members.map(function (m) {
-                 return m.id;
-               }) : [];
-               utilArrayUnion(mh, mb).forEach(function (memberID) {
-                 if (head.hasEntity(memberID)) {
-                   result.add(memberID);
-                 }
-               });
+           for (var i = 0; i < a.length; i++) {
+             if (seen[a[i][n]] === undefined) {
+               o.push(a[i]);
+               seen[a[i][n]] = true;

              }
              }

-           });
-           return Array.from(result);
-         };
+           }

 
 

-         _diff.modified = function modified() {
-           var result = [];
-           Object.values(_changes).forEach(function (change) {
-             if (change.base && change.head) {
-               result.push(change.head);
-             }
-           });
-           return result;
-         };
+           return o;
+         }

 
 

-         _diff.created = function created() {
-           var result = [];
-           Object.values(_changes).forEach(function (change) {
-             if (!change.base && change.head) {
-               result.push(change.head);
-             }
-           });
-           return result;
-         };
+         function addSource(d) {
+           d.push(_source.url(d));
+           return d;
+         } // Update tiles based on current state of `projection`.

 
 

-         _diff.deleted = function deleted() {
-           var result = [];
-           Object.values(_changes).forEach(function (change) {
-             if (change.base && !change.head) {
-               result.push(change.base);
-             }
-           });
-           return result;
-         };

 
 

-         _diff.summary = function summary() {
-           var relevant = {};
-           var keys = Object.keys(_changes);
+         function background(selection) {
+           _zoom = geoScaleToZoom(_projection.scale(), _tileSize);
+           var pixelOffset;

 
 

-           for (var i = 0; i < keys.length; i++) {
-             var change = _changes[keys[i]];
+           if (_source) {
+             pixelOffset = [_source.offset()[0] * Math.pow(2, _zoom), _source.offset()[1] * Math.pow(2, _zoom)];
+           } else {
+             pixelOffset = [0, 0];
+           }

 
 

-             if (change.head && change.head.geometry(head) !== 'vertex') {
-               addEntity(change.head, head, change.base ? 'modified' : 'created');
-             } else if (change.base && change.base.geometry(base) !== 'vertex') {
-               addEntity(change.base, base, 'deleted');
-             } else if (change.base && change.head) {
-               // modified vertex
-               var moved = !fastDeepEqual(change.base.loc, change.head.loc);
-               var retagged = !fastDeepEqual(change.base.tags, change.head.tags);
+           var translate = [_projection.translate()[0] + pixelOffset[0], _projection.translate()[1] + pixelOffset[1]];
+           tiler.scale(_projection.scale() * 2 * Math.PI).translate(translate);
+           _tileOrigin = [_projection.scale() * Math.PI - translate[0], _projection.scale() * Math.PI - translate[1]];
+           render(selection);
+         } // Derive the tiles onscreen, remove those offscreen and position them.
+         // Important that this part not depend on `_projection` because it's
+         // rentered when tiles load/error (see #644).

 
 

-               if (moved) {
-                 addParents(change.head);
-               }

 
 

-               if (retagged || moved && change.head.hasInterestingTags()) {
-                 addEntity(change.head, head, 'modified');
+         function render(selection) {
+           if (!_source) return;
+           var requests = [];
+           var showDebug = context.getDebug('tile') && !_source.overlay;
+
+           if (_source.validZoom(_zoom)) {
+             tiler.skipNullIsland(!!_source.overlay);
+             tiler().forEach(function (d) {
+               addSource(d);
+               if (d[3] === '') return;
+               if (typeof d[3] !== 'string') return; // Workaround for #2295
+
+               requests.push(d);
+
+               if (_cache[d[3]] === false && lookUp(d)) {
+                 requests.push(addSource(lookUp(d)));

                }
                }

-             } else if (change.head && change.head.hasInterestingTags()) {
-               // created vertex
-               addEntity(change.head, head, 'created');
-             } else if (change.base && change.base.hasInterestingTags()) {
-               // deleted vertex
-               addEntity(change.base, base, 'deleted');
-             }
+             });
+             requests = uniqueBy(requests, 3).filter(function (r) {
+               // don't re-request tiles which have failed in the past
+               return _cache[r[3]] !== false;
+             });

            }
 
            }
 

-           return Object.values(relevant);
-
-           function addEntity(entity, graph, changeType) {
-             relevant[entity.id] = {
-               entity: entity,
-               graph: graph,
-               changeType: changeType
-             };
+           function load(d3_event, d) {
+             _cache[d[3]] = true;
+             select(this).on('error', null).on('load', null).classed('tile-loaded', true);
+             render(selection);

            }
 
            }
 

-           function addParents(entity) {
-             var parents = head.parentWays(entity);
+           function error(d3_event, d) {
+             _cache[d[3]] = false;
+             select(this).on('error', null).on('load', null).remove();
+             render(selection);
+           }

 
 

-             for (var j = parents.length - 1; j >= 0; j--) {
-               var parent = parents[j];
+           function imageTransform(d) {
+             var ts = _tileSize * Math.pow(2, _zoom - d[2]);

 
 

-               if (!(parent.id in relevant)) {
-                 addEntity(parent, head, 'modified');
-               }
-             }
+             var scale = tileSizeAtZoom(d, _zoom);
+             return 'translate(' + (d[0] * ts - _tileOrigin[0]) + 'px,' + (d[1] * ts - _tileOrigin[1]) + 'px) ' + 'scale(' + scale + ',' + scale + ')';

            }
            }

-         }; // returns complete set of entities that require a redraw
-         //  (optionally within given `extent`)
-

 
 

-         _diff.complete = function complete(extent) {
-           var result = {};
-           var id, change;
+           function tileCenter(d) {
+             var ts = _tileSize * Math.pow(2, _zoom - d[2]);

 
 

-           for (id in _changes) {
-             change = _changes[id];
-             var h = change.head;
-             var b = change.base;
-             var entity = h || b;
-             var i;
-             if (extent && (!h || !h.intersects(extent, head)) && (!b || !b.intersects(extent, base))) continue;
-             result[id] = h;
+             return [d[0] * ts - _tileOrigin[0] + ts / 2, d[1] * ts - _tileOrigin[1] + ts / 2];
+           }

 
 

-             if (entity.type === 'way') {
-               var nh = h ? h.nodes : [];
-               var nb = b ? b.nodes : [];
-               var diff;
-               diff = utilArrayDifference(nh, nb);
+           function debugTransform(d) {
+             var coord = tileCenter(d);
+             return 'translate(' + coord[0] + 'px,' + coord[1] + 'px)';
+           } // Pick a representative tile near the center of the viewport
+           // (This is useful for sampling the imagery vintage)

 
 

-               for (i = 0; i < diff.length; i++) {
-                 result[diff[i]] = head.hasEntity(diff[i]);
-               }

 
 

-               diff = utilArrayDifference(nb, nh);
+           var dims = tiler.size();
+           var mapCenter = [dims[0] / 2, dims[1] / 2];
+           var minDist = Math.max(dims[0], dims[1]);
+           var nearCenter;
+           requests.forEach(function (d) {
+             var c = tileCenter(d);
+             var dist = geoVecLength(c, mapCenter);

 
 

-               for (i = 0; i < diff.length; i++) {
-                 result[diff[i]] = head.hasEntity(diff[i]);
-               }
+             if (dist < minDist) {
+               minDist = dist;
+               nearCenter = d;

              }
              }

+           });
+           var image = selection.selectAll('img').data(requests, function (d) {
+             return d[3];
+           });
+           image.exit().style(transformProp, imageTransform).classed('tile-removing', true).classed('tile-center', false).each(function () {
+             var tile = select(this);
+             window.setTimeout(function () {
+               if (tile.classed('tile-removing')) {
+                 tile.remove();
+               }
+             }, 300);
+           });
+           image.enter().append('img').attr('class', 'tile').attr('draggable', 'false').style('width', _tileSize + 'px').style('height', _tileSize + 'px').attr('src', function (d) {
+             return d[3];
+           }).on('error', error).on('load', load).merge(image).style(transformProp, imageTransform).classed('tile-debug', showDebug).classed('tile-removing', false).classed('tile-center', function (d) {
+             return d === nearCenter;
+           });
+           var debug = selection.selectAll('.tile-label-debug').data(showDebug ? requests : [], function (d) {
+             return d[3];
+           });
+           debug.exit().remove();

 
 

-             if (entity.type === 'relation' && entity.isMultipolygon()) {
-               var mh = h ? h.members.map(function (m) {
-                 return m.id;
-               }) : [];
-               var mb = b ? b.members.map(function (m) {
-                 return m.id;
-               }) : [];
-               var ids = utilArrayUnion(mh, mb);
+           if (showDebug) {
+             var debugEnter = debug.enter().append('div').attr('class', 'tile-label-debug');
+             debugEnter.append('div').attr('class', 'tile-label-debug-coord');
+             debugEnter.append('div').attr('class', 'tile-label-debug-vintage');
+             debug = debug.merge(debugEnter);
+             debug.style(transformProp, debugTransform);
+             debug.selectAll('.tile-label-debug-coord').html(function (d) {
+               return d[2] + ' / ' + d[0] + ' / ' + d[1];
+             });
+             debug.selectAll('.tile-label-debug-vintage').each(function (d) {
+               var span = select(this);
+               var center = context.projection.invert(tileCenter(d));

 
 

-               for (i = 0; i < ids.length; i++) {
-                 var member = head.hasEntity(ids[i]);
-                 if (!member) continue; // not downloaded
+               _source.getMetadata(center, d, function (err, result) {
+                 span.html(result && result.vintage && result.vintage.range || _t('info_panels.background.vintage') + ': ' + _t('info_panels.background.unknown'));
+               });
+             });
+           }
+         }

 
 

-                 if (extent && !member.intersects(extent, head)) continue; // not visible
+         background.projection = function (val) {
+           if (!arguments.length) return _projection;
+           _projection = val;
+           return background;
+         };

 
 

-                 result[ids[i]] = member;
-               }
-             }
+         background.dimensions = function (val) {
+           if (!arguments.length) return tiler.size();
+           tiler.size(val);
+           return background;
+         };

 
 

-             addParents(head.parentWays(entity), result);
-             addParents(head.parentRelations(entity), result);
-           }
+         background.source = function (val) {
+           if (!arguments.length) return _source;
+           _source = val;
+           _tileSize = _source.tileSize;
+           _cache = {};
+           tiler.tileSize(_source.tileSize).zoomExtent(_source.zoomExtent);
+           return background;
+         };

 
 

-           return result;
+         return background;
+       }

 
 

-           function addParents(parents, result) {
-             for (var i = 0; i < parents.length; i++) {
-               var parent = parents[i];
-               if (parent.id in result) continue;
-               result[parent.id] = parent;
-               addParents(head.parentRelations(parent), result);
-             }
-           }
-         };
+       var _imageryIndex = null;
+       function rendererBackground(context) {
+         var dispatch = dispatch$8('change');
+         var detected = utilDetect();
+         var baseLayer = rendererTileLayer(context).projection(context.projection);
+         var _isValid = true;
+         var _overlayLayers = [];
+         var _brightness = 1;
+         var _contrast = 1;
+         var _saturation = 1;
+         var _sharpness = 1;
+
+         function ensureImageryIndex() {
+           return _mainFileFetcher.get('imagery').then(function (sources) {
+             if (_imageryIndex) return _imageryIndex;
+             _imageryIndex = {
+               imagery: sources,
+               features: {}
+             }; // use which-polygon to support efficient index and querying for imagery

 
 

-         return _diff;
-       }
+             var features = sources.map(function (source) {
+               if (!source.polygon) return null; // workaround for editor-layer-index weirdness..
+               // Add an extra array nest to each element in `source.polygon`
+               // so the rings are not treated as a bunch of holes:
+               // what we have: [ [[outer],[hole],[hole]] ]
+               // what we want: [ [[outer]],[[outer]],[[outer]] ]

 
 

-       function coreTree(head) {
-         // tree for entities
-         var _rtree = new RBush();
+               var rings = source.polygon.map(function (ring) {
+                 return [ring];
+               });
+               var feature = {
+                 type: 'Feature',
+                 properties: {
+                   id: source.id
+                 },
+                 geometry: {
+                   type: 'MultiPolygon',
+                   coordinates: rings
+                 }
+               };
+               _imageryIndex.features[source.id] = feature;
+               return feature;
+             }).filter(Boolean);
+             _imageryIndex.query = whichPolygon_1({
+               type: 'FeatureCollection',
+               features: features
+             }); // Instantiate `rendererBackgroundSource` objects for each source

 
 

-         var _bboxes = {}; // maintain a separate tree for granular way segments
+             _imageryIndex.backgrounds = sources.map(function (source) {
+               if (source.type === 'bing') {
+                 return rendererBackgroundSource.Bing(source, dispatch);
+               } else if (/^EsriWorldImagery/.test(source.id)) {
+                 return rendererBackgroundSource.Esri(source);
+               } else {
+                 return rendererBackgroundSource(source);
+               }
+             }); // Add 'None'

 
 

-         var _segmentsRTree = new RBush();
+             _imageryIndex.backgrounds.unshift(rendererBackgroundSource.None()); // Add 'Custom'

 
 

-         var _segmentsBBoxes = {};
-         var _segmentsByWayId = {};
-         var tree = {};

 
 

-         function entityBBox(entity) {
-           var bbox = entity.extent(head).bbox();
-           bbox.id = entity.id;
-           _bboxes[entity.id] = bbox;
-           return bbox;
-         }
+             var template = corePreferences('background-custom-template') || '';
+             var custom = rendererBackgroundSource.Custom(template);

 
 

-         function segmentBBox(segment) {
-           var extent = segment.extent(head); // extent can be null if the node entities aren't in the graph for some reason
+             _imageryIndex.backgrounds.unshift(custom);

 
 

-           if (!extent) return null;
-           var bbox = extent.bbox();
-           bbox.segment = segment;
-           _segmentsBBoxes[segment.id] = bbox;
-           return bbox;
+             return _imageryIndex;
+           });

          }
 
          }
 

-         function removeEntity(entity) {
-           _rtree.remove(_bboxes[entity.id]);
+         function background(selection) {
+           var currSource = baseLayer.source(); // If we are displaying an Esri basemap at high zoom,
+           // check its tilemap to see how high the zoom can go

 
 

-           delete _bboxes[entity.id];
+           if (context.map().zoom() > 18) {
+             if (currSource && /^EsriWorldImagery/.test(currSource.id)) {
+               var center = context.map().center();
+               currSource.fetchTilemap(center);
+             }
+           } // Is the imagery valid here? - #4827

 
 

-           if (_segmentsByWayId[entity.id]) {
-             _segmentsByWayId[entity.id].forEach(function (segment) {
-               _segmentsRTree.remove(_segmentsBBoxes[segment.id]);

 
 

-               delete _segmentsBBoxes[segment.id];
-             });
+           var sources = background.sources(context.map().extent());
+           var wasValid = _isValid;
+           _isValid = !!sources.filter(function (d) {
+             return d === currSource;
+           }).length;

 
 

-             delete _segmentsByWayId[entity.id];
+           if (wasValid !== _isValid) {
+             // change in valid status
+             background.updateImagery();

            }
            }

-         }
-
-         function loadEntities(entities) {
-           _rtree.load(entities.map(entityBBox));

 
 

-           var segments = [];
-           entities.forEach(function (entity) {
-             if (entity.segments) {
-               var entitySegments = entity.segments(head); // cache these to make them easy to remove later
+           var baseFilter = '';

 
 

-               _segmentsByWayId[entity.id] = entitySegments;
-               segments = segments.concat(entitySegments);
+           if (detected.cssfilters) {
+             if (_brightness !== 1) {
+               baseFilter += " brightness(".concat(_brightness, ")");

              }
              }

-           });
-           if (segments.length) _segmentsRTree.load(segments.map(segmentBBox).filter(Boolean));
-         }

 
 

-         function updateParents(entity, insertions, memo) {
-           head.parentWays(entity).forEach(function (way) {
-             if (_bboxes[way.id]) {
-               removeEntity(way);
-               insertions[way.id] = way;
+             if (_contrast !== 1) {
+               baseFilter += " contrast(".concat(_contrast, ")");

              }
 
              }
 

-             updateParents(way, insertions, memo);
-           });
-           head.parentRelations(entity).forEach(function (relation) {
-             if (memo[entity.id]) return;
-             memo[entity.id] = true;
-
-             if (_bboxes[relation.id]) {
-               removeEntity(relation);
-               insertions[relation.id] = relation;
+             if (_saturation !== 1) {
+               baseFilter += " saturate(".concat(_saturation, ")");

              }
 
              }
 

-             updateParents(relation, insertions, memo);
-           });
-         }
-
-         tree.rebase = function (entities, force) {
-           var insertions = {};
-
-           for (var i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             if (!entity.visible) continue;
-
-             if (head.entities.hasOwnProperty(entity.id) || _bboxes[entity.id]) {
-               if (!force) {
-                 continue;
-               } else if (_bboxes[entity.id]) {
-                 removeEntity(entity);
-               }
+             if (_sharpness < 1) {
+               // gaussian blur
+               var blur = d3_interpolateNumber(0.5, 5)(1 - _sharpness);
+               baseFilter += " blur(".concat(blur, "px)");

              }
              }

-
-             insertions[entity.id] = entity;
-             updateParents(entity, insertions, {});

            }
 
            }
 

-           loadEntities(Object.values(insertions));
-           return tree;
-         };
-
-         function updateToGraph(graph) {
-           if (graph === head) return;
-           var diff = coreDifference(head, graph);
-           head = graph;
-           var changed = diff.didChange;
-           if (!changed.addition && !changed.deletion && !changed.geometry) return;
-           var insertions = {};
+           var base = selection.selectAll('.layer-background').data([0]);
+           base = base.enter().insert('div', '.layer-data').attr('class', 'layer layer-background').merge(base);

 
 

-           if (changed.deletion) {
-             diff.deleted().forEach(function (entity) {
-               removeEntity(entity);
-             });
+           if (detected.cssfilters) {
+             base.style('filter', baseFilter || null);
+           } else {
+             base.style('opacity', _brightness);

            }
 
            }
 

-           if (changed.geometry) {
-             diff.modified().forEach(function (entity) {
-               removeEntity(entity);
-               insertions[entity.id] = entity;
-               updateParents(entity, insertions, {});
-             });
-           }
+           var imagery = base.selectAll('.layer-imagery').data([0]);
+           imagery.enter().append('div').attr('class', 'layer layer-imagery').merge(imagery).call(baseLayer);
+           var maskFilter = '';
+           var mixBlendMode = '';

 
 

-           if (changed.addition) {
-             diff.created().forEach(function (entity) {
-               insertions[entity.id] = entity;
-             });
+           if (detected.cssfilters && _sharpness > 1) {
+             // apply unsharp mask
+             mixBlendMode = 'overlay';
+             maskFilter = 'saturate(0) blur(3px) invert(1)';
+             var contrast = _sharpness - 1;
+             maskFilter += " contrast(".concat(contrast, ")");
+             var brightness = d3_interpolateNumber(1, 0.85)(_sharpness - 1);
+             maskFilter += " brightness(".concat(brightness, ")");

            }
 
            }
 

-           loadEntities(Object.values(insertions));
-         } // returns an array of entities with bounding boxes overlapping `extent` for the given `graph`
+           var mask = base.selectAll('.layer-unsharp-mask').data(detected.cssfilters && _sharpness > 1 ? [0] : []);
+           mask.exit().remove();
+           mask.enter().append('div').attr('class', 'layer layer-mask layer-unsharp-mask').merge(mask).call(baseLayer).style('filter', maskFilter || null).style('mix-blend-mode', mixBlendMode || null);
+           var overlays = selection.selectAll('.layer-overlay').data(_overlayLayers, function (d) {
+             return d.source().name();
+           });
+           overlays.exit().remove();
+           overlays.enter().insert('div', '.layer-data').attr('class', 'layer layer-overlay').merge(overlays).each(function (layer, i, nodes) {
+             return select(nodes[i]).call(layer);
+           });
+         }

 
 

+         background.updateImagery = function () {
+           var currSource = baseLayer.source();
+           if (context.inIntro() || !currSource) return;

 
 

-         tree.intersects = function (extent, graph) {
-           updateToGraph(graph);
-           return _rtree.search(extent.bbox()).map(function (bbox) {
-             return graph.entity(bbox.id);
-           });
-         }; // returns an array of segment objects with bounding boxes overlapping `extent` for the given `graph`
+           var o = _overlayLayers.filter(function (d) {
+             return !d.source().isLocatorOverlay() && !d.source().isHidden();
+           }).map(function (d) {
+             return d.source().id;
+           }).join(',');

 
 

+           var meters = geoOffsetToMeters(currSource.offset());
+           var EPSILON = 0.01;
+           var x = +meters[0].toFixed(2);
+           var y = +meters[1].toFixed(2);
+           var hash = utilStringQs(window.location.hash);
+           var id = currSource.id;

 
 

-         tree.waySegments = function (extent, graph) {
-           updateToGraph(graph);
-           return _segmentsRTree.search(extent.bbox()).map(function (bbox) {
-             return bbox.segment;
-           });
-         };
+           if (id === 'custom') {
+             id = "custom:".concat(currSource.template());
+           }

 
 

-         return tree;
-       }
+           if (id) {
+             hash.background = id;
+           } else {
+             delete hash.background;
+           }

 
 

-       function uiModal(selection, blocking) {
-         var _this = this;
+           if (o) {
+             hash.overlays = o;
+           } else {
+             delete hash.overlays;
+           }

 
 

-         var keybinding = utilKeybinding('modal');
-         var previous = selection.select('div.modal');
-         var animate = previous.empty();
-         previous.transition().duration(200).style('opacity', 0).remove();
-         var shaded = selection.append('div').attr('class', 'shaded').style('opacity', 0);
+           if (Math.abs(x) > EPSILON || Math.abs(y) > EPSILON) {
+             hash.offset = "".concat(x, ",").concat(y);
+           } else {
+             delete hash.offset;
+           }

 
 

-         shaded.close = function () {
-           shaded.transition().duration(200).style('opacity', 0).remove();
-           modal.transition().duration(200).style('top', '0px');
-           select(document).call(keybinding.unbind);
-         };
+           if (!window.mocha) {
+             window.location.replace('#' + utilQsString(hash, true));
+           }

 
 

-         var modal = shaded.append('div').attr('class', 'modal fillL');
-         modal.append('input').attr('class', 'keytrap keytrap-first').on('focus.keytrap', moveFocusToLast);
+           var imageryUsed = [];
+           var photoOverlaysUsed = [];
+           var currUsed = currSource.imageryUsed();

 
 

-         if (!blocking) {
-           shaded.on('click.remove-modal', function (d3_event) {
-             if (d3_event.target === _this) {
-               shaded.close();
-             }
+           if (currUsed && _isValid) {
+             imageryUsed.push(currUsed);
+           }
+
+           _overlayLayers.filter(function (d) {
+             return !d.source().isLocatorOverlay() && !d.source().isHidden();
+           }).forEach(function (d) {
+             return imageryUsed.push(d.source().imageryUsed());

            });
            });

-           modal.append('button').attr('class', 'close').on('click', shaded.close).call(svgIcon('#iD-icon-close'));
-           keybinding.on('⌫', shaded.close).on('⎋', shaded.close);
-           select(document).call(keybinding);
-         }

 
 

-         modal.append('div').attr('class', 'content');
-         modal.append('input').attr('class', 'keytrap keytrap-last').on('focus.keytrap', moveFocusToFirst);
+           var dataLayer = context.layers().layer('data');

 
 

-         if (animate) {
-           shaded.transition().style('opacity', 1);
-         } else {
-           shaded.style('opacity', 1);
-         }
+           if (dataLayer && dataLayer.enabled() && dataLayer.hasData()) {
+             imageryUsed.push(dataLayer.getSrc());
+           }

 
 

-         return shaded;
+           var photoOverlayLayers = {
+             streetside: 'Bing Streetside',
+             mapillary: 'Mapillary Images',
+             'mapillary-map-features': 'Mapillary Map Features',
+             'mapillary-signs': 'Mapillary Signs',
+             openstreetcam: 'OpenStreetCam Images'
+           };

 
 

-         function moveFocusToFirst() {
-           var node = modal // there are additional rules about what's focusable, but this suits our purposes
-           .select('a, button, input:not(.keytrap), select, textarea').node();
+           for (var layerID in photoOverlayLayers) {
+             var layer = context.layers().layer(layerID);

 
 

-           if (node) {
-             node.focus();
-           } else {
-             select(this).node().blur();
+             if (layer && layer.enabled()) {
+               photoOverlaysUsed.push(layerID);
+               imageryUsed.push(photoOverlayLayers[layerID]);
+             }

            }
            }

-         }

 
 

-         function moveFocusToLast() {
-           var nodes = modal.selectAll('a, button, input:not(.keytrap), select, textarea').nodes();
+           context.history().imageryUsed(imageryUsed);
+           context.history().photoOverlaysUsed(photoOverlaysUsed);
+         };

 
 

-           if (nodes.length) {
-             nodes[nodes.length - 1].focus();
-           } else {
-             select(this).node().blur();
-           }
-         }
-       }
+         var _checkedBlocklists;

 
 

-       function uiLoading(context) {
-         var _modalSelection = select(null);
+         background.sources = function (extent, zoom, includeCurrent) {
+           if (!_imageryIndex) return []; // called before init()?

 
 

-         var _message = '';
-         var _blocking = false;
+           var visible = {};
+           (_imageryIndex.query.bbox(extent.rectangle(), true) || []).forEach(function (d) {
+             return visible[d.id] = true;
+           });
+           var currSource = baseLayer.source();
+           var osm = context.connection();
+           var blocklists = osm && osm.imageryBlocklists();

 
 

-         var loading = function loading(selection) {
-           _modalSelection = uiModal(selection, _blocking);
+           if (blocklists && blocklists !== _checkedBlocklists) {
+             _imageryIndex.backgrounds.forEach(function (source) {
+               source.isBlocked = blocklists.some(function (blocklist) {
+                 return blocklist.test(source.template());
+               });
+             });

 
 

-           var loadertext = _modalSelection.select('.content').classed('loading-modal', true).append('div').attr('class', 'modal-section fillL');
+             _checkedBlocklists = blocklists;
+           }

 
 

-           loadertext.append('img').attr('class', 'loader').attr('src', context.imagePath('loader-white.gif'));
-           loadertext.append('h3').html(_message);
+           return _imageryIndex.backgrounds.filter(function (source) {
+             if (includeCurrent && currSource === source) return true; // optionally always include the current imagery

 
 

-           _modalSelection.select('button.close').attr('class', 'hide');
+             if (source.isBlocked) return false; // even bundled sources may be blocked - #7905

 
 

-           return loading;
-         };
+             if (!source.polygon) return true; // always include imagery with worldwide coverage

 
 

-         loading.message = function (val) {
-           if (!arguments.length) return _message;
-           _message = val;
-           return loading;
-         };
+             if (zoom && zoom < 6) return false; // optionally exclude local imagery at low zooms

 
 

-         loading.blocking = function (val) {
-           if (!arguments.length) return _blocking;
-           _blocking = val;
-           return loading;
+             return visible[source.id]; // include imagery visible in given extent
+           });

          };
 
          };
 

-         loading.close = function () {
-           _modalSelection.remove();
-         };
+         background.dimensions = function (val) {
+           if (!val) return;
+           baseLayer.dimensions(val);

 
 

-         loading.isShown = function () {
-           return _modalSelection && !_modalSelection.empty() && _modalSelection.node().parentNode;
+           _overlayLayers.forEach(function (layer) {
+             return layer.dimensions(val);
+           });

          };
 
          };
 

-         return loading;
-       }
+         background.baseLayerSource = function (d) {
+           if (!arguments.length) return baseLayer.source(); // test source against OSM imagery blocklists..

 
 

-       function coreHistory(context) {
-         var dispatch$1 = dispatch('reset', 'change', 'merge', 'restore', 'undone', 'redone');
+           var osm = context.connection();
+           if (!osm) return background;
+           var blocklists = osm.imageryBlocklists();
+           var template = d.template();
+           var fail = false;
+           var tested = 0;
+           var regex;

 
 

-         var _lock = utilSessionMutex('lock'); // restorable if iD not open in another window/tab and a saved history exists in localStorage
+           for (var i = 0; i < blocklists.length; i++) {
+             regex = blocklists[i];
+             fail = regex.test(template);
+             tested++;
+             if (fail) break;
+           } // ensure at least one test was run.

 
 
 
 

-         var _hasUnresolvedRestorableChanges = _lock.lock() && !!corePreferences(getKey('saved_history'));
+           if (!tested) {
+             regex = /.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/;
+             fail = regex.test(template);
+           }

 
 

-         var duration = 150;
-         var _imageryUsed = [];
-         var _photoOverlaysUsed = [];
-         var _checkpoints = {};
+           baseLayer.source(!fail ? d : background.findSource('none'));
+           dispatch.call('change');
+           background.updateImagery();
+           return background;
+         };

 
 

-         var _pausedGraph;
+         background.findSource = function (id) {
+           if (!id || !_imageryIndex) return null; // called before init()?

 
 

-         var _stack;
+           return _imageryIndex.backgrounds.find(function (d) {
+             return d.id && d.id === id;
+           });
+         };

 
 

-         var _index;
+         background.bing = function () {
+           background.baseLayerSource(background.findSource('Bing'));
+         };

 
 

-         var _tree; // internal _act, accepts list of actions and eased time
+         background.showsLayer = function (d) {
+           var currSource = baseLayer.source();
+           if (!d || !currSource) return false;
+           return d.id === currSource.id || _overlayLayers.some(function (layer) {
+             return d.id === layer.source().id;
+           });
+         };

 
 

+         background.overlayLayerSources = function () {
+           return _overlayLayers.map(function (layer) {
+             return layer.source();
+           });
+         };

 
 

-         function _act(actions, t) {
-           actions = Array.prototype.slice.call(actions);
-           var annotation;
+         background.toggleOverlayLayer = function (d) {
+           var layer;

 
 

-           if (typeof actions[actions.length - 1] !== 'function') {
-             annotation = actions.pop();
-           }
+           for (var i = 0; i < _overlayLayers.length; i++) {
+             layer = _overlayLayers[i];

 
 

-           var graph = _stack[_index].graph;
+             if (layer.source() === d) {
+               _overlayLayers.splice(i, 1);

 
 

-           for (var i = 0; i < actions.length; i++) {
-             graph = actions[i](graph, t);
+               dispatch.call('change');
+               background.updateImagery();
+               return;
+             }

            }
 
            }
 

-           return {
-             graph: graph,
-             annotation: annotation,
-             imageryUsed: _imageryUsed,
-             photoOverlaysUsed: _photoOverlaysUsed,
-             transform: context.projection.transform(),
-             selectedIDs: context.selectedIDs()
-           };
-         } // internal _perform with eased time
-
-
-         function _perform(args, t) {
-           var previous = _stack[_index].graph;
-           _stack = _stack.slice(0, _index + 1);
-
-           var actionResult = _act(args, t);
-
-           _stack.push(actionResult);
-
-           _index++;
-           return change(previous);
-         } // internal _replace with eased time
+           layer = rendererTileLayer(context).source(d).projection(context.projection).dimensions(baseLayer.dimensions());

 
 

+           _overlayLayers.push(layer);

 
 

-         function _replace(args, t) {
-           var previous = _stack[_index].graph; // assert(_index == _stack.length - 1)
+           dispatch.call('change');
+           background.updateImagery();
+         };

 
 

-           var actionResult = _act(args, t);
+         background.nudge = function (d, zoom) {
+           var currSource = baseLayer.source();

 
 

-           _stack[_index] = actionResult;
-           return change(previous);
-         } // internal _overwrite with eased time
+           if (currSource) {
+             currSource.nudge(d, zoom);
+             dispatch.call('change');
+             background.updateImagery();
+           }

 
 

+           return background;
+         };

 
 

-         function _overwrite(args, t) {
-           var previous = _stack[_index].graph;
+         background.offset = function (d) {
+           var currSource = baseLayer.source();

 
 

-           if (_index > 0) {
-             _index--;
+           if (!arguments.length) {
+             return currSource && currSource.offset() || [0, 0];
+           }

 
 

-             _stack.pop();
+           if (currSource) {
+             currSource.offset(d);
+             dispatch.call('change');
+             background.updateImagery();

            }
 
            }
 

-           _stack = _stack.slice(0, _index + 1);
+           return background;
+         };

 
 

-           var actionResult = _act(args, t);
+         background.brightness = function (d) {
+           if (!arguments.length) return _brightness;
+           _brightness = d;
+           if (context.mode()) dispatch.call('change');
+           return background;
+         };

 
 

-           _stack.push(actionResult);
+         background.contrast = function (d) {
+           if (!arguments.length) return _contrast;
+           _contrast = d;
+           if (context.mode()) dispatch.call('change');
+           return background;
+         };

 
 

-           _index++;
-           return change(previous);
-         } // determine difference and dispatch a change event
+         background.saturation = function (d) {
+           if (!arguments.length) return _saturation;
+           _saturation = d;
+           if (context.mode()) dispatch.call('change');
+           return background;
+         };

 
 

+         background.sharpness = function (d) {
+           if (!arguments.length) return _sharpness;
+           _sharpness = d;
+           if (context.mode()) dispatch.call('change');
+           return background;
+         };

 
 

-         function change(previous) {
-           var difference = coreDifference(previous, history.graph());
+         var _loadPromise;

 
 

-           if (!_pausedGraph) {
-             dispatch$1.call('change', this, difference);
+         background.ensureLoaded = function () {
+           if (_loadPromise) return _loadPromise;
+
+           function parseMapParams(qmap) {
+             if (!qmap) return false;
+             var params = qmap.split('/').map(Number);
+             if (params.length < 3 || params.some(isNaN)) return false;
+             return geoExtent([params[2], params[1]]); // lon,lat

            }
 
            }
 

-           return difference;
-         } // iD uses namespaced keys so multiple installations do not conflict
+           var hash = utilStringQs(window.location.hash);
+           var requested = hash.background || hash.layer;
+           var extent = parseMapParams(hash.map);
+           return _loadPromise = ensureImageryIndex().then(function (imageryIndex) {
+             var first = imageryIndex.backgrounds.length && imageryIndex.backgrounds[0];
+             var best;
+
+             if (!requested && extent) {
+               best = background.sources(extent).find(function (s) {
+                 return s.best();
+               });
+             } // Decide which background layer to display

 
 
 
 

-         function getKey(n) {
-           return 'iD_' + window.location.origin + '_' + n;
-         }
+             if (requested && requested.indexOf('custom:') === 0) {
+               var template = requested.replace(/^custom:/, '');
+               var custom = background.findSource('custom');
+               background.baseLayerSource(custom.template(template));
+               corePreferences('background-custom-template', template);
+             } else {
+               background.baseLayerSource(background.findSource(requested) || best || background.findSource(corePreferences('background-last-used')) || background.findSource('Bing') || first || background.findSource('none'));
+             }

 
 

-         var history = {
-           graph: function graph() {
-             return _stack[_index].graph;
-           },
-           tree: function tree() {
-             return _tree;
-           },
-           base: function base() {
-             return _stack[0].graph;
-           },
-           merge: function merge(entities
-           /*, extent*/
-           ) {
-             var stack = _stack.map(function (state) {
-               return state.graph;
+             var locator = imageryIndex.backgrounds.find(function (d) {
+               return d.overlay && d["default"];

              });
 
              });
 

-             _stack[0].graph.rebase(entities, stack, false);
+             if (locator) {
+               background.toggleOverlayLayer(locator);
+             }

 
 

-             _tree.rebase(entities, false);
+             var overlays = (hash.overlays || '').split(',');
+             overlays.forEach(function (overlay) {
+               overlay = background.findSource(overlay);

 
 

-             dispatch$1.call('merge', this, entities);
-           },
-           perform: function perform() {
-             // complete any transition already in progress
-             select(document).interrupt('history.perform');
-             var transitionable = false;
-             var action0 = arguments[0];
+               if (overlay) {
+                 background.toggleOverlayLayer(overlay);
+               }
+             });

 
 

-             if (arguments.length === 1 || arguments.length === 2 && typeof arguments[1] !== 'function') {
-               transitionable = !!action0.transitionable;
+             if (hash.gpx) {
+               var gpx = context.layers().layer('data');
+
+               if (gpx) {
+                 gpx.url(hash.gpx, '.gpx');
+               }

              }
 
              }
 

-             if (transitionable) {
-               var origArguments = arguments;
-               select(document).transition('history.perform').duration(duration).ease(linear$1).tween('history.tween', function () {
-                 return function (t) {
-                   if (t < 1) _overwrite([action0], t);
-                 };
-               }).on('start', function () {
-                 _perform([action0], 0);
-               }).on('end interrupt', function () {
-                 _overwrite(origArguments, 1);
+             if (hash.offset) {
+               var offset = hash.offset.replace(/;/g, ',').split(',').map(function (n) {
+                 return !isNaN(n) && n;

                });
                });

-             } else {
-               return _perform(arguments);
-             }
-           },
-           replace: function replace() {
-             select(document).interrupt('history.perform');
-             return _replace(arguments, 1);
-           },
-           // Same as calling pop and then perform
-           overwrite: function overwrite() {
-             select(document).interrupt('history.perform');
-             return _overwrite(arguments, 1);
-           },
-           pop: function pop(n) {
-             select(document).interrupt('history.perform');
-             var previous = _stack[_index].graph;

 
 

-             if (isNaN(+n) || +n < 0) {
-               n = 1;
+               if (offset.length === 2) {
+                 background.offset(geoMetersToOffset(offset));
+               }

              }
              }

+           })["catch"](function () {
+             /* ignore */
+           });
+         };

 
 

-             while (n-- > 0 && _index > 0) {
-               _index--;
+         return utilRebind(background, dispatch, 'on');
+       }

 
 

-               _stack.pop();
-             }
+       function rendererFeatures(context) {
+         var dispatch = dispatch$8('change', 'redraw');
+         var features = utilRebind({}, dispatch, 'on');

 
 

-             return change(previous);
-           },
-           // Back to the previous annotated state or _index = 0.
-           undo: function undo() {
-             select(document).interrupt('history.perform');
-             var previousStack = _stack[_index];
-             var previous = previousStack.graph;
+         var _deferred = new Set();

 
 

-             while (_index > 0) {
-               _index--;
-               if (_stack[_index].annotation) break;
+         var traffic_roads = {
+           'motorway': true,
+           'motorway_link': true,
+           'trunk': true,
+           'trunk_link': true,
+           'primary': true,
+           'primary_link': true,
+           'secondary': true,
+           'secondary_link': true,
+           'tertiary': true,
+           'tertiary_link': true,
+           'residential': true,
+           'unclassified': true,
+           'living_street': true
+         };
+         var service_roads = {
+           'service': true,
+           'road': true,
+           'track': true
+         };
+         var paths = {
+           'path': true,
+           'footway': true,
+           'cycleway': true,
+           'bridleway': true,
+           'steps': true,
+           'pedestrian': true
+         };
+         var past_futures = {
+           'proposed': true,
+           'construction': true,
+           'abandoned': true,
+           'dismantled': true,
+           'disused': true,
+           'razed': true,
+           'demolished': true,
+           'obliterated': true
+         };
+         var _cullFactor = 1;
+         var _cache = {};
+         var _rules = {};
+         var _stats = {};
+         var _keys = [];
+         var _hidden = [];
+         var _forceVisible = {};
+
+         function update() {
+           if (!window.mocha) {
+             var hash = utilStringQs(window.location.hash);
+             var disabled = features.disabled();
+
+             if (disabled.length) {
+               hash.disable_features = disabled.join(',');
+             } else {
+               delete hash.disable_features;

              }
 
              }
 

-             dispatch$1.call('undone', this, _stack[_index], previousStack);
-             return change(previous);
-           },
-           // Forward to the next annotated state.
-           redo: function redo() {
-             select(document).interrupt('history.perform');
-             var previousStack = _stack[_index];
-             var previous = previousStack.graph;
-             var tryIndex = _index;
+             window.location.replace('#' + utilQsString(hash, true));
+             corePreferences('disabled-features', disabled.join(','));
+           }

 
 

-             while (tryIndex < _stack.length - 1) {
-               tryIndex++;
+           _hidden = features.hidden();
+           dispatch.call('change');
+           dispatch.call('redraw');
+         }

 
 

-               if (_stack[tryIndex].annotation) {
-                 _index = tryIndex;
-                 dispatch$1.call('redone', this, _stack[_index], previousStack);
-                 break;
-               }
-             }
+         function defineRule(k, filter, max) {
+           var isEnabled = true;

 
 

-             return change(previous);
-           },
-           pauseChangeDispatch: function pauseChangeDispatch() {
-             if (!_pausedGraph) {
-               _pausedGraph = _stack[_index].graph;
-             }
-           },
-           resumeChangeDispatch: function resumeChangeDispatch() {
-             if (_pausedGraph) {
-               var previous = _pausedGraph;
-               _pausedGraph = null;
-               return change(previous);
-             }
-           },
-           undoAnnotation: function undoAnnotation() {
-             var i = _index;
+           _keys.push(k);

 
 

-             while (i >= 0) {
-               if (_stack[i].annotation) return _stack[i].annotation;
-               i--;
+           _rules[k] = {
+             filter: filter,
+             enabled: isEnabled,
+             // whether the user wants it enabled..
+             count: 0,
+             currentMax: max || Infinity,
+             defaultMax: max || Infinity,
+             enable: function enable() {
+               this.enabled = true;
+               this.currentMax = this.defaultMax;
+             },
+             disable: function disable() {
+               this.enabled = false;
+               this.currentMax = 0;
+             },
+             hidden: function hidden() {
+               return this.count === 0 && !this.enabled || this.count > this.currentMax * _cullFactor;
+             },
+             autoHidden: function autoHidden() {
+               return this.hidden() && this.currentMax > 0;

              }
              }

-           },
-           redoAnnotation: function redoAnnotation() {
-             var i = _index + 1;
+           };
+         }

 
 

-             while (i <= _stack.length - 1) {
-               if (_stack[i].annotation) return _stack[i].annotation;
-               i++;
-             }
-           },
-           // Returns the entities from the active graph with bounding boxes
-           // overlapping the given `extent`.
-           intersects: function intersects(extent) {
-             return _tree.intersects(extent, _stack[_index].graph);
-           },
-           difference: function difference() {
-             var base = _stack[0].graph;
-             var head = _stack[_index].graph;
-             return coreDifference(base, head);
-           },
-           changes: function changes(action) {
-             var base = _stack[0].graph;
-             var head = _stack[_index].graph;
+         defineRule('points', function isPoint(tags, geometry) {
+           return geometry === 'point';
+         }, 200);
+         defineRule('traffic_roads', function isTrafficRoad(tags) {
+           return traffic_roads[tags.highway];
+         });
+         defineRule('service_roads', function isServiceRoad(tags) {
+           return service_roads[tags.highway];
+         });
+         defineRule('paths', function isPath(tags) {
+           return paths[tags.highway];
+         });
+         defineRule('buildings', function isBuilding(tags) {
+           return !!tags.building && tags.building !== 'no' || tags.parking === 'multi-storey' || tags.parking === 'sheds' || tags.parking === 'carports' || tags.parking === 'garage_boxes';
+         }, 250);
+         defineRule('building_parts', function isBuildingPart(tags) {
+           return tags['building:part'];
+         });
+         defineRule('indoor', function isIndoor(tags) {
+           return tags.indoor;
+         });
+         defineRule('landuse', function isLanduse(tags, geometry) {
+           return geometry === 'area' && !_rules.buildings.filter(tags) && !_rules.building_parts.filter(tags) && !_rules.indoor.filter(tags) && !_rules.water.filter(tags) && !_rules.pistes.filter(tags);
+         });
+         defineRule('boundaries', function isBoundary(tags) {
+           return !!tags.boundary && !(traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway] || tags.waterway || tags.railway || tags.landuse || tags.natural || tags.building || tags.power);
+         });
+         defineRule('water', function isWater(tags) {
+           return !!tags.waterway || tags.natural === 'water' || tags.natural === 'coastline' || tags.natural === 'bay' || tags.landuse === 'pond' || tags.landuse === 'basin' || tags.landuse === 'reservoir' || tags.landuse === 'salt_pond';
+         });
+         defineRule('rail', function isRail(tags) {
+           return (!!tags.railway || tags.landuse === 'railway') && !(traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway]);
+         });
+         defineRule('pistes', function isPiste(tags) {
+           return tags['piste:type'];
+         });
+         defineRule('aerialways', function isPiste(tags) {
+           return tags.aerialway && tags.aerialway !== 'yes' && tags.aerialway !== 'station';
+         });
+         defineRule('power', function isPower(tags) {
+           return !!tags.power;
+         }); // contains a past/future tag, but not in active use as a road/path/cycleway/etc..

 
 

-             if (action) {
-               head = action(head);
-             }
+         defineRule('past_future', function isPastFuture(tags) {
+           if (traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway]) {
+             return false;
+           }

 
 

-             var difference = coreDifference(base, head);
-             return {
-               modified: difference.modified(),
-               created: difference.created(),
-               deleted: difference.deleted()
-             };
-           },
-           hasChanges: function hasChanges() {
-             return this.difference().length() > 0;
-           },
-           imageryUsed: function imageryUsed(sources) {
-             if (sources) {
-               _imageryUsed = sources;
-               return history;
-             } else {
-               var s = new Set();
+           var strings = Object.keys(tags);

 
 

-               _stack.slice(1, _index + 1).forEach(function (state) {
-                 state.imageryUsed.forEach(function (source) {
-                   if (source !== 'Custom') {
-                     s.add(source);
-                   }
-                 });
-               });
+           for (var i = 0; i < strings.length; i++) {
+             var s = strings[i];

 
 

-               return Array.from(s);
+             if (past_futures[s] || past_futures[tags[s]]) {
+               return true;

              }
              }

-           },
-           photoOverlaysUsed: function photoOverlaysUsed(sources) {
-             if (sources) {
-               _photoOverlaysUsed = sources;
-               return history;
-             } else {
-               var s = new Set();
+           }

 
 

-               _stack.slice(1, _index + 1).forEach(function (state) {
-                 if (state.photoOverlaysUsed && Array.isArray(state.photoOverlaysUsed)) {
-                   state.photoOverlaysUsed.forEach(function (photoOverlay) {
-                     s.add(photoOverlay);
-                   });
-                 }
-               });
+           return false;
+         }); // Lines or areas that don't match another feature filter.
+         // IMPORTANT: The 'others' feature must be the last one defined,
+         //   so that code in getMatches can skip this test if `hasMatch = true`

 
 

-               return Array.from(s);
-             }
-           },
-           // save the current history state
-           checkpoint: function checkpoint(key) {
-             _checkpoints[key] = {
-               stack: _stack,
-               index: _index
-             };
-             return history;
-           },
-           // restore history state to a given checkpoint or reset completely
-           reset: function reset(key) {
-             if (key !== undefined && _checkpoints.hasOwnProperty(key)) {
-               _stack = _checkpoints[key].stack;
-               _index = _checkpoints[key].index;
-             } else {
-               _stack = [{
-                 graph: coreGraph()
-               }];
-               _index = 0;
-               _tree = coreTree(_stack[0].graph);
-               _checkpoints = {};
-             }
+         defineRule('others', function isOther(tags, geometry) {
+           return geometry === 'line' || geometry === 'area';
+         });

 
 

-             dispatch$1.call('reset');
-             dispatch$1.call('change');
-             return history;
-           },
-           // `toIntroGraph()` is used to export the intro graph used by the walkthrough.
-           //
-           // To use it:
-           //  1. Start the walkthrough.
-           //  2. Get to a "free editing" tutorial step
-           //  3. Make your edits to the walkthrough map
-           //  4. In your browser dev console run:
-           //        `id.history().toIntroGraph()`
-           //  5. This outputs stringified JSON to the browser console
-           //  6. Copy it to `data/intro_graph.json` and prettify it in your code editor
-           toIntroGraph: function toIntroGraph() {
-             var nextID = {
-               n: 0,
-               r: 0,
-               w: 0
-             };
-             var permIDs = {};
-             var graph = this.graph();
-             var baseEntities = {}; // clone base entities..
+         features.features = function () {
+           return _rules;
+         };

 
 

-             Object.values(graph.base().entities).forEach(function (entity) {
-               var copy = copyIntroEntity(entity);
-               baseEntities[copy.id] = copy;
-             }); // replace base entities with head entities..
+         features.keys = function () {
+           return _keys;
+         };

 
 

-             Object.keys(graph.entities).forEach(function (id) {
-               var entity = graph.entities[id];
+         features.enabled = function (k) {
+           if (!arguments.length) {
+             return _keys.filter(function (k) {
+               return _rules[k].enabled;
+             });
+           }

 
 

-               if (entity) {
-                 var copy = copyIntroEntity(entity);
-                 baseEntities[copy.id] = copy;
-               } else {
-                 delete baseEntities[id];
-               }
-             }); // swap temporary for permanent ids..
+           return _rules[k] && _rules[k].enabled;
+         };

 
 

-             Object.values(baseEntities).forEach(function (entity) {
-               if (Array.isArray(entity.nodes)) {
-                 entity.nodes = entity.nodes.map(function (node) {
-                   return permIDs[node] || node;
-                 });
-               }
+         features.disabled = function (k) {
+           if (!arguments.length) {
+             return _keys.filter(function (k) {
+               return !_rules[k].enabled;
+             });
+           }

 
 

-               if (Array.isArray(entity.members)) {
-                 entity.members = entity.members.map(function (member) {
-                   member.id = permIDs[member.id] || member.id;
-                   return member;
-                 });
-               }
+           return _rules[k] && !_rules[k].enabled;
+         };
+
+         features.hidden = function (k) {
+           if (!arguments.length) {
+             return _keys.filter(function (k) {
+               return _rules[k].hidden();

              });
              });

-             return JSON.stringify({
-               dataIntroGraph: baseEntities
+           }
+
+           return _rules[k] && _rules[k].hidden();
+         };
+
+         features.autoHidden = function (k) {
+           if (!arguments.length) {
+             return _keys.filter(function (k) {
+               return _rules[k].autoHidden();

              });
              });

+           }

 
 

-             function copyIntroEntity(source) {
-               var copy = utilObjectOmit(source, ['type', 'user', 'v', 'version', 'visible']); // Note: the copy is no longer an osmEntity, so it might not have `tags`
+           return _rules[k] && _rules[k].autoHidden();
+         };

 
 

-               if (copy.tags && !Object.keys(copy.tags)) {
-                 delete copy.tags;
-               }
+         features.enable = function (k) {
+           if (_rules[k] && !_rules[k].enabled) {
+             _rules[k].enable();

 
 

-               if (Array.isArray(copy.loc)) {
-                 copy.loc[0] = +copy.loc[0].toFixed(6);
-                 copy.loc[1] = +copy.loc[1].toFixed(6);
-               }
+             update();
+           }
+         };

 
 

-               var match = source.id.match(/([nrw])-\d*/); // temporary id
+         features.enableAll = function () {
+           var didEnable = false;

 
 

-               if (match !== null) {
-                 var nrw = match[1];
-                 var permID;
+           for (var k in _rules) {
+             if (!_rules[k].enabled) {
+               didEnable = true;

 
 

-                 do {
-                   permID = nrw + ++nextID[nrw];
-                 } while (baseEntities.hasOwnProperty(permID));
+               _rules[k].enable();
+             }
+           }

 
 

-                 copy.id = permIDs[source.id] = permID;
-               }
+           if (didEnable) update();
+         };

 
 

-               return copy;
+         features.disable = function (k) {
+           if (_rules[k] && _rules[k].enabled) {
+             _rules[k].disable();
+
+             update();
+           }
+         };
+
+         features.disableAll = function () {
+           var didDisable = false;
+
+           for (var k in _rules) {
+             if (_rules[k].enabled) {
+               didDisable = true;
+
+               _rules[k].disable();

              }
              }

-           },
-           toJSON: function toJSON() {
-             if (!this.hasChanges()) return;
-             var allEntities = {};
-             var baseEntities = {};
-             var base = _stack[0];
+           }

 
 

-             var s = _stack.map(function (i) {
-               var modified = [];
-               var deleted = [];
-               Object.keys(i.graph.entities).forEach(function (id) {
-                 var entity = i.graph.entities[id];
+           if (didDisable) update();
+         };

 
 

-                 if (entity) {
-                   var key = osmEntity.key(entity);
-                   allEntities[key] = entity;
-                   modified.push(key);
-                 } else {
-                   deleted.push(id);
-                 } // make sure that the originals of changed or deleted entities get merged
-                 // into the base of the _stack after restoring the data from JSON.
+         features.toggle = function (k) {
+           if (_rules[k]) {
+             (function (f) {
+               return f.enabled ? f.disable() : f.enable();
+             })(_rules[k]);

 
 

+             update();
+           }
+         };

 
 

-                 if (id in base.graph.entities) {
-                   baseEntities[id] = base.graph.entities[id];
-                 }
+         features.resetStats = function () {
+           for (var i = 0; i < _keys.length; i++) {
+             _rules[_keys[i]].count = 0;
+           }

 
 

-                 if (entity && entity.nodes) {
-                   // get originals of pre-existing child nodes
-                   entity.nodes.forEach(function (nodeID) {
-                     if (nodeID in base.graph.entities) {
-                       baseEntities[nodeID] = base.graph.entities[nodeID];
-                     }
-                   });
-                 } // get originals of parent entities too
+           dispatch.call('change');
+         };

 
 

+         features.gatherStats = function (d, resolver, dimensions) {
+           var needsRedraw = false;
+           var types = utilArrayGroupBy(d, 'type');
+           var entities = [].concat(types.relation || [], types.way || [], types.node || []);
+           var currHidden, geometry, matches, i, j;

 
 

-                 var baseParents = base.graph._parentWays[id];
+           for (i = 0; i < _keys.length; i++) {
+             _rules[_keys[i]].count = 0;
+           } // adjust the threshold for point/building culling based on viewport size..
+           // a _cullFactor of 1 corresponds to a 1000x1000px viewport..

 
 

-                 if (baseParents) {
-                   baseParents.forEach(function (parentID) {
-                     if (parentID in base.graph.entities) {
-                       baseEntities[parentID] = base.graph.entities[parentID];
-                     }
-                   });
-                 }
-               });
-               var x = {};
-               if (modified.length) x.modified = modified;
-               if (deleted.length) x.deleted = deleted;
-               if (i.imageryUsed) x.imageryUsed = i.imageryUsed;
-               if (i.photoOverlaysUsed) x.photoOverlaysUsed = i.photoOverlaysUsed;
-               if (i.annotation) x.annotation = i.annotation;
-               if (i.transform) x.transform = i.transform;
-               if (i.selectedIDs) x.selectedIDs = i.selectedIDs;
-               return x;
-             });

 
 

-             return JSON.stringify({
-               version: 3,
-               entities: Object.values(allEntities),
-               baseEntities: Object.values(baseEntities),
-               stack: s,
-               nextIDs: osmEntity.id.next,
-               index: _index,
-               // note the time the changes were saved
-               timestamp: new Date().getTime()
-             });
-           },
-           fromJSON: function fromJSON(json, loadChildNodes) {
-             var h = JSON.parse(json);
-             var loadComplete = true;
-             osmEntity.id.next = h.nextIDs;
-             _index = h.index;
+           _cullFactor = dimensions[0] * dimensions[1] / 1000000;

 
 

-             if (h.version === 2 || h.version === 3) {
-               var allEntities = {};
-               h.entities.forEach(function (entity) {
-                 allEntities[osmEntity.key(entity)] = osmEntity(entity);
-               });
+           for (i = 0; i < entities.length; i++) {
+             geometry = entities[i].geometry(resolver);
+             matches = Object.keys(features.getMatches(entities[i], resolver, geometry));

 
 

-               if (h.version === 3) {
-                 // This merges originals for changed entities into the base of
-                 // the _stack even if the current _stack doesn't have them (for
-                 // example when iD has been restarted in a different region)
-                 var baseEntities = h.baseEntities.map(function (d) {
-                   return osmEntity(d);
-                 });
+             for (j = 0; j < matches.length; j++) {
+               _rules[matches[j]].count++;
+             }
+           }

 
 

-                 var stack = _stack.map(function (state) {
-                   return state.graph;
-                 });
+           currHidden = features.hidden();

 
 

-                 _stack[0].graph.rebase(baseEntities, stack, true);
+           if (currHidden !== _hidden) {
+             _hidden = currHidden;
+             needsRedraw = true;
+             dispatch.call('change');
+           }

 
 

-                 _tree.rebase(baseEntities, true); // When we restore a modified way, we also need to fetch any missing
-                 // childnodes that would normally have been downloaded with it.. #2142
+           return needsRedraw;
+         };

 
 

+         features.stats = function () {
+           for (var i = 0; i < _keys.length; i++) {
+             _stats[_keys[i]] = _rules[_keys[i]].count;
+           }

 
 

-                 if (loadChildNodes) {
-                   var osm = context.connection();
-                   var baseWays = baseEntities.filter(function (e) {
-                     return e.type === 'way';
-                   });
-                   var nodeIDs = baseWays.reduce(function (acc, way) {
-                     return utilArrayUnion(acc, way.nodes);
-                   }, []);
-                   var missing = nodeIDs.filter(function (n) {
-                     return !_stack[0].graph.hasEntity(n);
-                   });
+           return _stats;
+         };

 
 

-                   if (missing.length && osm) {
-                     loadComplete = false;
-                     context.map().redrawEnable(false);
-                     var loading = uiLoading(context).blocking(true);
-                     context.container().call(loading);
+         features.clear = function (d) {
+           for (var i = 0; i < d.length; i++) {
+             features.clearEntity(d[i]);
+           }
+         };

 
 

-                     var childNodesLoaded = function childNodesLoaded(err, result) {
-                       if (!err) {
-                         var visibleGroups = utilArrayGroupBy(result.data, 'visible');
-                         var visibles = visibleGroups["true"] || []; // alive nodes
+         features.clearEntity = function (entity) {
+           delete _cache[osmEntity.key(entity)];
+         };

 
 

-                         var invisibles = visibleGroups["false"] || []; // deleted nodes
+         features.reset = function () {
+           Array.from(_deferred).forEach(function (handle) {
+             window.cancelIdleCallback(handle);

 
 

-                         if (visibles.length) {
-                           var visibleIDs = visibles.map(function (entity) {
-                             return entity.id;
-                           });
+             _deferred["delete"](handle);
+           });
+           _cache = {};
+         }; // only certain relations are worth checking

 
 

-                           var stack = _stack.map(function (state) {
-                             return state.graph;
-                           });

 
 

-                           missing = utilArrayDifference(missing, visibleIDs);
+         function relationShouldBeChecked(relation) {
+           // multipolygon features have `area` geometry and aren't checked here
+           return relation.tags.type === 'boundary';
+         }

 
 

-                           _stack[0].graph.rebase(visibles, stack, true);
+         features.getMatches = function (entity, resolver, geometry) {
+           if (geometry === 'vertex' || geometry === 'relation' && !relationShouldBeChecked(entity)) return {};
+           var ent = osmEntity.key(entity);

 
 

-                           _tree.rebase(visibles, true);
-                         } // fetch older versions of nodes that were deleted..
+           if (!_cache[ent]) {
+             _cache[ent] = {};
+           }

 
 

+           if (!_cache[ent].matches) {
+             var matches = {};
+             var hasMatch = false;

 
 

-                         invisibles.forEach(function (entity) {
-                           osm.loadEntityVersion(entity.id, +entity.version - 1, childNodesLoaded);
-                         });
-                       }
+             for (var i = 0; i < _keys.length; i++) {
+               if (_keys[i] === 'others') {
+                 if (hasMatch) continue; // If an entity...
+                 //   1. is a way that hasn't matched other 'interesting' feature rules,

 
 

-                       if (err || !missing.length) {
-                         loading.close();
-                         context.map().redrawEnable(true);
-                         dispatch$1.call('change');
-                         dispatch$1.call('restore', this);
-                       }
-                     };
+                 if (entity.type === 'way') {
+                   var parents = features.getParents(entity, resolver, geometry); //   2a. belongs only to a single multipolygon relation

 
 

-                     osm.loadMultiple(missing, childNodesLoaded);
+                   if (parents.length === 1 && parents[0].isMultipolygon() || // 2b. or belongs only to boundary relations
+                   parents.length > 0 && parents.every(function (parent) {
+                     return parent.tags.type === 'boundary';
+                   })) {
+                     // ...then match whatever feature rules the parent relation has matched.
+                     // see #2548, #2887
+                     //
+                     // IMPORTANT:
+                     // For this to work, getMatches must be called on relations before ways.
+                     //
+                     var pkey = osmEntity.key(parents[0]);
+
+                     if (_cache[pkey] && _cache[pkey].matches) {
+                       matches = Object.assign({}, _cache[pkey].matches); // shallow copy
+
+                       continue;
+                     }

                    }
                  }
                }
 
                    }
                  }
                }
 

-               _stack = h.stack.map(function (d) {
-                 var entities = {},
-                     entity;
-
-                 if (d.modified) {
-                   d.modified.forEach(function (key) {
-                     entity = allEntities[key];
-                     entities[entity.id] = entity;
-                   });
-                 }
+               if (_rules[_keys[i]].filter(entity.tags, geometry)) {
+                 matches[_keys[i]] = hasMatch = true;
+               }
+             }

 
 

-                 if (d.deleted) {
-                   d.deleted.forEach(function (id) {
-                     entities[id] = undefined;
-                   });
-                 }
+             _cache[ent].matches = matches;
+           }

 
 

-                 return {
-                   graph: coreGraph(_stack[0].graph).load(entities),
-                   annotation: d.annotation,
-                   imageryUsed: d.imageryUsed,
-                   photoOverlaysUsed: d.photoOverlaysUsed,
-                   transform: d.transform,
-                   selectedIDs: d.selectedIDs
-                 };
-               });
-             } else {
-               // original version
-               _stack = h.stack.map(function (d) {
-                 var entities = {};
+           return _cache[ent].matches;
+         };

 
 

-                 for (var i in d.entities) {
-                   var entity = d.entities[i];
-                   entities[i] = entity === 'undefined' ? undefined : osmEntity(entity);
-                 }
+         features.getParents = function (entity, resolver, geometry) {
+           if (geometry === 'point') return [];
+           var ent = osmEntity.key(entity);

 
 

-                 d.graph = coreGraph(_stack[0].graph).load(entities);
-                 return d;
-               });
-             }
+           if (!_cache[ent]) {
+             _cache[ent] = {};
+           }

 
 

-             var transform = _stack[_index].transform;
+           if (!_cache[ent].parents) {
+             var parents = [];

 
 

-             if (transform) {
-               context.map().transformEase(transform, 0); // 0 = immediate, no easing
+             if (geometry === 'vertex') {
+               parents = resolver.parentWays(entity);
+             } else {
+               // 'line', 'area', 'relation'
+               parents = resolver.parentRelations(entity);

              }
 
              }
 

-             if (loadComplete) {
-               dispatch$1.call('change');
-               dispatch$1.call('restore', this);
-             }
+             _cache[ent].parents = parents;
+           }

 
 

-             return history;
-           },
-           lock: function lock() {
-             return _lock.lock();
-           },
-           unlock: function unlock() {
-             _lock.unlock();
-           },
-           save: function save() {
-             if (_lock.locked() && // don't overwrite existing, unresolved changes
-             !_hasUnresolvedRestorableChanges) {
-               corePreferences(getKey('saved_history'), history.toJSON() || null);
-             }
+           return _cache[ent].parents;
+         };

 
 

-             return history;
-           },
-           // delete the history version saved in localStorage
-           clearSaved: function clearSaved() {
-             context.debouncedSave.cancel();
+         features.isHiddenPreset = function (preset, geometry) {
+           if (!_hidden.length) return false;
+           if (!preset.tags) return false;
+           var test = preset.setTags({}, geometry);

 
 

-             if (_lock.locked()) {
-               _hasUnresolvedRestorableChanges = false;
-               corePreferences(getKey('saved_history'), null); // clear the changeset metadata associated with the saved history
+           for (var key in _rules) {
+             if (_rules[key].filter(test, geometry)) {
+               if (_hidden.indexOf(key) !== -1) {
+                 return key;
+               }

 
 

-               corePreferences('comment', null);
-               corePreferences('hashtags', null);
-               corePreferences('source', null);
+               return false;

              }
              }

+           }

 
 

-             return history;
-           },
-           savedHistoryJSON: function savedHistoryJSON() {
-             return corePreferences(getKey('saved_history'));
-           },
-           hasRestorableChanges: function hasRestorableChanges() {
-             return _hasUnresolvedRestorableChanges;
-           },
-           // load history from a version stored in localStorage
-           restore: function restore() {
-             if (_lock.locked()) {
-               _hasUnresolvedRestorableChanges = false;
-               var json = this.savedHistoryJSON();
-               if (json) history.fromJSON(json, true);
-             }
-           },
-           _getKey: getKey
+           return false;

          };
          };

-         history.reset();
-         return utilRebind(history, dispatch$1, 'on');
-       }

 
 

-       /**
-        * Look for roads that can be connected to other roads with a short extension
-        */
+         features.isHiddenFeature = function (entity, resolver, geometry) {
+           if (!_hidden.length) return false;
+           if (!entity.version) return false;
+           if (_forceVisible[entity.id]) return false;
+           var matches = Object.keys(features.getMatches(entity, resolver, geometry));
+           return matches.length && matches.every(function (k) {
+             return features.hidden(k);
+           });
+         };

 
 

-       function validationAlmostJunction(context) {
-         var type = 'almost_junction';
-         var EXTEND_TH_METERS = 5;
-         var WELD_TH_METERS = 0.75; // Comes from considering bounding case of parallel ways
+         features.isHiddenChild = function (entity, resolver, geometry) {
+           if (!_hidden.length) return false;
+           if (!entity.version || geometry === 'point') return false;
+           if (_forceVisible[entity.id]) return false;
+           var parents = features.getParents(entity, resolver, geometry);
+           if (!parents.length) return false;

 
 

-         var CLOSE_NODE_TH = EXTEND_TH_METERS - WELD_TH_METERS; // Comes from considering bounding case of perpendicular ways
+           for (var i = 0; i < parents.length; i++) {
+             if (!features.isHidden(parents[i], resolver, parents[i].geometry(resolver))) {
+               return false;
+             }
+           }

 
 

-         var SIG_ANGLE_TH = Math.atan(WELD_TH_METERS / EXTEND_TH_METERS);
+           return true;
+         };

 
 

-         function isHighway(entity) {
-           return entity.type === 'way' && osmRoutableHighwayTagValues[entity.tags.highway];
-         }
+         features.hasHiddenConnections = function (entity, resolver) {
+           if (!_hidden.length) return false;
+           var childNodes, connections;

 
 

-         function isTaggedAsNotContinuing(node) {
-           return node.tags.noexit === 'yes' || node.tags.amenity === 'parking_entrance' || node.tags.entrance && node.tags.entrance !== 'no';
-         }
+           if (entity.type === 'midpoint') {
+             childNodes = [resolver.entity(entity.edge[0]), resolver.entity(entity.edge[1])];
+             connections = [];
+           } else {
+             childNodes = entity.nodes ? resolver.childNodes(entity) : [];
+             connections = features.getParents(entity, resolver, entity.geometry(resolver));
+           } // gather ways connected to child nodes..

 
 

-         var validation = function checkAlmostJunction(entity, graph) {
-           if (!isHighway(entity)) return [];
-           if (entity.isDegenerate()) return [];
-           var tree = context.history().tree();
-           var extendableNodeInfos = findConnectableEndNodesByExtension(entity);
-           var issues = [];
-           extendableNodeInfos.forEach(function (extendableNodeInfo) {
-             issues.push(new validationIssue({
-               type: type,
-               subtype: 'highway-highway',
-               severity: 'warning',
-               message: function message(context) {
-                 var entity1 = context.hasEntity(this.entityIds[0]);

 
 

-                 if (this.entityIds[0] === this.entityIds[2]) {
-                   return entity1 ? _t.html('issues.almost_junction.self.message', {
-                     feature: utilDisplayLabel(entity1, context.graph())
-                   }) : '';
-                 } else {
-                   var entity2 = context.hasEntity(this.entityIds[2]);
-                   return entity1 && entity2 ? _t.html('issues.almost_junction.message', {
-                     feature: utilDisplayLabel(entity1, context.graph()),
-                     feature2: utilDisplayLabel(entity2, context.graph())
-                   }) : '';
-                 }
-               },
-               reference: showReference,
-               entityIds: [entity.id, extendableNodeInfo.node.id, extendableNodeInfo.wid],
-               loc: extendableNodeInfo.node.loc,
-               hash: JSON.stringify(extendableNodeInfo.node.loc),
-               data: {
-                 midId: extendableNodeInfo.mid.id,
-                 edge: extendableNodeInfo.edge,
-                 cross_loc: extendableNodeInfo.cross_loc
-               },
-               dynamicFixes: makeFixes
-             }));
+           connections = childNodes.reduce(function (result, e) {
+             return resolver.isShared(e) ? utilArrayUnion(result, resolver.parentWays(e)) : result;
+           }, connections);
+           return connections.some(function (e) {
+             return features.isHidden(e, resolver, e.geometry(resolver));

            });
            });

-           return issues;
+         };

 
 

-           function makeFixes(context) {
-             var fixes = [new validationIssueFix({
-               icon: 'iD-icon-abutment',
-               title: _t.html('issues.fix.connect_features.title'),
-               onClick: function onClick(context) {
-                 var annotation = _t('issues.fix.connect_almost_junction.annotation');
+         features.isHidden = function (entity, resolver, geometry) {
+           if (!_hidden.length) return false;
+           if (!entity.version) return false;
+           var fn = geometry === 'vertex' ? features.isHiddenChild : features.isHiddenFeature;
+           return fn(entity, resolver, geometry);
+         };

 
 

-                 var _this$issue$entityIds = _slicedToArray(this.issue.entityIds, 3),
-                     endNodeId = _this$issue$entityIds[1],
-                     crossWayId = _this$issue$entityIds[2];
+         features.filter = function (d, resolver) {
+           if (!_hidden.length) return d;
+           var result = [];

 
 

-                 var midNode = context.entity(this.issue.data.midId);
-                 var endNode = context.entity(endNodeId);
-                 var crossWay = context.entity(crossWayId); // When endpoints are close, just join if resulting small change in angle (#7201)
+           for (var i = 0; i < d.length; i++) {
+             var entity = d[i];

 
 

-                 var nearEndNodes = findNearbyEndNodes(endNode, crossWay);
+             if (!features.isHidden(entity, resolver, entity.geometry(resolver))) {
+               result.push(entity);
+             }
+           }

 
 

-                 if (nearEndNodes.length > 0) {
-                   var collinear = findSmallJoinAngle(midNode, endNode, nearEndNodes);
+           return result;
+         };

 
 

-                   if (collinear) {
-                     context.perform(actionMergeNodes([collinear.id, endNode.id], collinear.loc), annotation);
-                     return;
-                   }
-                 }
+         features.forceVisible = function (entityIDs) {
+           if (!arguments.length) return Object.keys(_forceVisible);
+           _forceVisible = {};

 
 

-                 var targetEdge = this.issue.data.edge;
-                 var crossLoc = this.issue.data.cross_loc;
-                 var edgeNodes = [context.entity(targetEdge[0]), context.entity(targetEdge[1])];
-                 var closestNodeInfo = geoSphericalClosestNode(edgeNodes, crossLoc); // already a point nearby, just connect to that
+           for (var i = 0; i < entityIDs.length; i++) {
+             _forceVisible[entityIDs[i]] = true;
+             var entity = context.hasEntity(entityIDs[i]);

 
 

-                 if (closestNodeInfo.distance < WELD_TH_METERS) {
-                   context.perform(actionMergeNodes([closestNodeInfo.node.id, endNode.id], closestNodeInfo.node.loc), annotation); // else add the end node to the edge way
-                 } else {
-                   context.perform(actionAddMidpoint({
-                     loc: crossLoc,
-                     edge: targetEdge
-                   }, endNode), annotation);
-                 }
+             if (entity && entity.type === 'relation') {
+               // also show relation members (one level deep)
+               for (var j in entity.members) {
+                 _forceVisible[entity.members[j].id] = true;

                }
                }

-             })];
-             var node = context.hasEntity(this.entityIds[1]);
-
-             if (node && !node.hasInterestingTags()) {
-               // node has no descriptive tags, suggest noexit fix
-               fixes.push(new validationIssueFix({
-                 icon: 'maki-barrier',
-                 title: _t.html('issues.fix.tag_as_disconnected.title'),
-                 onClick: function onClick(context) {
-                   var nodeID = this.issue.entityIds[1];
-                   var tags = Object.assign({}, context.entity(nodeID).tags);
-                   tags.noexit = 'yes';
-                   context.perform(actionChangeTags(nodeID, tags), _t('issues.fix.tag_as_disconnected.annotation'));
-                 }
-               }));

              }
              }

+           }

 
 

-             return fixes;
+           return features;
+         };
+
+         features.init = function () {
+           var storage = corePreferences('disabled-features');
+
+           if (storage) {
+             var storageDisabled = storage.replace(/;/g, ',').split(',');
+             storageDisabled.forEach(features.disable);

            }
 
            }
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.almost_junction.highway-highway.reference'));
+           var hash = utilStringQs(window.location.hash);
+
+           if (hash.disable_features) {
+             var hashDisabled = hash.disable_features.replace(/;/g, ',').split(',');
+             hashDisabled.forEach(features.disable);

            }
            }

+         }; // warm up the feature matching cache upon merging fetched data

 
 

-           function isExtendableCandidate(node, way) {
-             // can not accurately test vertices on tiles not downloaded from osm - #5938
-             var osm = services.osm;

 
 

-             if (osm && !osm.isDataLoaded(node.loc)) {
-               return false;
-             }
+         context.history().on('merge.features', function (newEntities) {
+           if (!newEntities) return;
+           var handle = window.requestIdleCallback(function () {
+             var graph = context.graph();
+             var types = utilArrayGroupBy(newEntities, 'type'); // ensure that getMatches is called on relations before ways

 
 

-             if (isTaggedAsNotContinuing(node) || graph.parentWays(node).length !== 1) {
-               return false;
+             var entities = [].concat(types.relation || [], types.way || [], types.node || []);
+
+             for (var i = 0; i < entities.length; i++) {
+               var geometry = entities[i].geometry(graph);
+               features.getMatches(entities[i], graph, geometry);

              }
              }

+           });

 
 

-             var occurrences = 0;
+           _deferred.add(handle);
+         });
+         return features;
+       }

 
 

-             for (var index in way.nodes) {
-               if (way.nodes[index] === node.id) {
-                 occurrences += 1;
+       /** Error message constants. */

 
 

-                 if (occurrences > 1) {
-                   return false;
-                 }
-               }
-             }
+       var FUNC_ERROR_TEXT = 'Expected a function';
+       /**
+        * Creates a throttled function that only invokes `func` at most once per
+        * every `wait` milliseconds. The throttled function comes with a `cancel`
+        * method to cancel delayed `func` invocations and a `flush` method to
+        * immediately invoke them. Provide `options` to indicate whether `func`
+        * should be invoked on the leading and/or trailing edge of the `wait`
+        * timeout. The `func` is invoked with the last arguments provided to the
+        * throttled function. Subsequent calls to the throttled function return the
+        * result of the last `func` invocation.
+        *
+        * **Note:** If `leading` and `trailing` options are `true`, `func` is
+        * invoked on the trailing edge of the timeout only if the throttled function
+        * is invoked more than once during the `wait` timeout.
+        *
+        * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
+        * until to the next tick, similar to `setTimeout` with a timeout of `0`.
+        *
+        * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
+        * for details over the differences between `_.throttle` and `_.debounce`.
+        *
+        * @static
+        * @memberOf _
+        * @since 0.1.0
+        * @category Function
+        * @param {Function} func The function to throttle.
+        * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
+        * @param {Object} [options={}] The options object.
+        * @param {boolean} [options.leading=true]
+        *  Specify invoking on the leading edge of the timeout.
+        * @param {boolean} [options.trailing=true]
+        *  Specify invoking on the trailing edge of the timeout.
+        * @returns {Function} Returns the new throttled function.
+        * @example
+        *
+        * // Avoid excessively updating the position while scrolling.
+        * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
+        *
+        * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
+        * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
+        * jQuery(element).on('click', throttled);
+        *
+        * // Cancel the trailing throttled invocation.
+        * jQuery(window).on('popstate', throttled.cancel);
+        */

 
 

-             return true;
-           }
+       function throttle(func, wait, options) {
+         var leading = true,
+             trailing = true;

 
 

-           function findConnectableEndNodesByExtension(way) {
-             var results = [];
-             if (way.isClosed()) return results;
-             var testNodes;
-             var indices = [0, way.nodes.length - 1];
-             indices.forEach(function (nodeIndex) {
-               var nodeID = way.nodes[nodeIndex];
-               var node = graph.entity(nodeID);
-               if (!isExtendableCandidate(node, way)) return;
-               var connectionInfo = canConnectByExtend(way, nodeIndex);
-               if (!connectionInfo) return;
-               testNodes = graph.childNodes(way).slice(); // shallow copy
+         if (typeof func != 'function') {
+           throw new TypeError(FUNC_ERROR_TEXT);
+         }

 
 

-               testNodes[nodeIndex] = testNodes[nodeIndex].move(connectionInfo.cross_loc); // don't flag issue if connecting the ways would cause self-intersection
+         if (isObject$2(options)) {
+           leading = 'leading' in options ? !!options.leading : leading;
+           trailing = 'trailing' in options ? !!options.trailing : trailing;
+         }

 
 

-               if (geoHasSelfIntersections(testNodes, nodeID)) return;
-               results.push(connectionInfo);
-             });
-             return results;
-           }
+         return debounce(func, wait, {
+           'leading': leading,
+           'maxWait': wait,
+           'trailing': trailing
+         });
+       }

 
 

-           function findNearbyEndNodes(node, way) {
-             return [way.nodes[0], way.nodes[way.nodes.length - 1]].map(function (d) {
-               return graph.entity(d);
-             }).filter(function (d) {
-               // Node cannot be near to itself, but other endnode of same way could be
-               return d.id !== node.id && geoSphericalDistance(node.loc, d.loc) <= CLOSE_NODE_TH;
-             });
-           }
+       //
+       // - the activeID - nope
+       // - 1 away (adjacent) to the activeID - yes (vertices will be merged)
+       // - 2 away from the activeID - nope (would create a self intersecting segment)
+       // - all others on a linear way - yes
+       // - all others on a closed way - nope (would create a self intersecting polygon)
+       //
+       // returns
+       // 0 = active vertex - no touch/connect
+       // 1 = passive vertex - yes touch/connect
+       // 2 = adjacent vertex - yes but pay attention segmenting a line here
+       //

 
 

-           function findSmallJoinAngle(midNode, tipNode, endNodes) {
-             // Both nodes could be close, so want to join whichever is closest to collinear
-             var joinTo;
-             var minAngle = Infinity; // Checks midNode -> tipNode -> endNode for collinearity
+       function svgPassiveVertex(node, graph, activeID) {
+         if (!activeID) return 1;
+         if (activeID === node.id) return 0;
+         var parents = graph.parentWays(node);
+         var i, j, nodes, isClosed, ix1, ix2, ix3, ix4, max;

 
 

-             endNodes.forEach(function (endNode) {
-               var a1 = geoAngle(midNode, tipNode, context.projection) + Math.PI;
-               var a2 = geoAngle(midNode, endNode, context.projection) + Math.PI;
-               var diff = Math.max(a1, a2) - Math.min(a1, a2);
+         for (i = 0; i < parents.length; i++) {
+           nodes = parents[i].nodes;
+           isClosed = parents[i].isClosed();

 
 

-               if (diff < minAngle) {
-                 joinTo = endNode;
-                 minAngle = diff;
+           for (j = 0; j < nodes.length; j++) {
+             // find this vertex, look nearby
+             if (nodes[j] === node.id) {
+               ix1 = j - 2;
+               ix2 = j - 1;
+               ix3 = j + 1;
+               ix4 = j + 2;
+
+               if (isClosed) {
+                 // wraparound if needed
+                 max = nodes.length - 1;
+                 if (ix1 < 0) ix1 = max + ix1;
+                 if (ix2 < 0) ix2 = max + ix2;
+                 if (ix3 > max) ix3 = ix3 - max;
+                 if (ix4 > max) ix4 = ix4 - max;

                }
                }

-             });
-             /* Threshold set by considering right angle triangle
-             based on node joining threshold and extension distance */

 
 

-             if (minAngle <= SIG_ANGLE_TH) return joinTo;
-             return null;
+               if (nodes[ix1] === activeID) return 0; // no - prevent self intersect
+               else if (nodes[ix2] === activeID) return 2; // ok - adjacent
+                 else if (nodes[ix3] === activeID) return 2; // ok - adjacent
+                   else if (nodes[ix4] === activeID) return 0; // no - prevent self intersect
+                     else if (isClosed && nodes.indexOf(activeID) !== -1) return 0; // no - prevent self intersect
+             }

            }
            }

+         }

 
 

-           function hasTag(tags, key) {
-             return tags[key] !== undefined && tags[key] !== 'no';
+         return 1; // ok
+       }
+       function svgMarkerSegments(projection, graph, dt, shouldReverse, bothDirections) {
+         return function (entity) {
+           var i = 0;
+           var offset = dt;
+           var segments = [];
+           var clip = d3_geoIdentity().clipExtent(projection.clipExtent()).stream;
+           var coordinates = graph.childNodes(entity).map(function (n) {
+             return n.loc;
+           });
+           var a, b;
+
+           if (shouldReverse(entity)) {
+             coordinates.reverse();

            }
 
            }
 

-           function canConnectWays(way, way2) {
-             // allow self-connections
-             if (way.id === way2.id) return true; // if one is bridge or tunnel, both must be bridge or tunnel
+           d3_geoStream({
+             type: 'LineString',
+             coordinates: coordinates
+           }, projection.stream(clip({
+             lineStart: function lineStart() {},
+             lineEnd: function lineEnd() {
+               a = null;
+             },
+             point: function point(x, y) {
+               b = [x, y];

 
 

-             if ((hasTag(way.tags, 'bridge') || hasTag(way2.tags, 'bridge')) && !(hasTag(way.tags, 'bridge') && hasTag(way2.tags, 'bridge'))) return false;
-             if ((hasTag(way.tags, 'tunnel') || hasTag(way2.tags, 'tunnel')) && !(hasTag(way.tags, 'tunnel') && hasTag(way2.tags, 'tunnel'))) return false; // must have equivalent layers and levels
+               if (a) {
+                 var span = geoVecLength(a, b) - offset;

 
 

-             var layer1 = way.tags.layer || '0',
-                 layer2 = way2.tags.layer || '0';
-             if (layer1 !== layer2) return false;
-             var level1 = way.tags.level || '0',
-                 level2 = way2.tags.level || '0';
-             if (level1 !== level2) return false;
-             return true;
-           }
+                 if (span >= 0) {
+                   var heading = geoVecAngle(a, b);
+                   var dx = dt * Math.cos(heading);
+                   var dy = dt * Math.sin(heading);
+                   var p = [a[0] + offset * Math.cos(heading), a[1] + offset * Math.sin(heading)]; // gather coordinates

 
 

-           function canConnectByExtend(way, endNodeIdx) {
-             var tipNid = way.nodes[endNodeIdx]; // the 'tip' node for extension point
+                   var coord = [a, p];

 
 

-             var midNid = endNodeIdx === 0 ? way.nodes[1] : way.nodes[way.nodes.length - 2]; // the other node of the edge
+                   for (span -= dt; span >= 0; span -= dt) {
+                     p = geoVecAdd(p, [dx, dy]);
+                     coord.push(p);
+                   }

 
 

-             var tipNode = graph.entity(tipNid);
-             var midNode = graph.entity(midNid);
-             var lon = tipNode.loc[0];
-             var lat = tipNode.loc[1];
-             var lon_range = geoMetersToLon(EXTEND_TH_METERS, lat) / 2;
-             var lat_range = geoMetersToLat(EXTEND_TH_METERS) / 2;
-             var queryExtent = geoExtent([[lon - lon_range, lat - lat_range], [lon + lon_range, lat + lat_range]]); // first, extend the edge of [midNode -> tipNode] by EXTEND_TH_METERS and find the "extended tip" location
+                   coord.push(b); // generate svg paths

 
 

-             var edgeLen = geoSphericalDistance(midNode.loc, tipNode.loc);
-             var t = EXTEND_TH_METERS / edgeLen + 1.0;
-             var extTipLoc = geoVecInterp(midNode.loc, tipNode.loc, t); // then, check if the extension part [tipNode.loc -> extTipLoc] intersects any other ways
+                   var segment = '';
+                   var j;

 
 

-             var segmentInfos = tree.waySegments(queryExtent, graph);
+                   for (j = 0; j < coord.length; j++) {
+                     segment += (j === 0 ? 'M' : 'L') + coord[j][0] + ',' + coord[j][1];
+                   }

 
 

-             for (var i = 0; i < segmentInfos.length; i++) {
-               var segmentInfo = segmentInfos[i];
-               var way2 = graph.entity(segmentInfo.wayId);
-               if (!isHighway(way2)) continue;
-               if (!canConnectWays(way, way2)) continue;
-               var nAid = segmentInfo.nodes[0],
-                   nBid = segmentInfo.nodes[1];
-               if (nAid === tipNid || nBid === tipNid) continue;
-               var nA = graph.entity(nAid),
-                   nB = graph.entity(nBid);
-               var crossLoc = geoLineIntersection([tipNode.loc, extTipLoc], [nA.loc, nB.loc]);
+                   segments.push({
+                     id: entity.id,
+                     index: i++,
+                     d: segment
+                   });

 
 

-               if (crossLoc) {
-                 return {
-                   mid: midNode,
-                   node: tipNode,
-                   wid: way2.id,
-                   edge: [nA.id, nB.id],
-                   cross_loc: crossLoc
-                 };
-               }
-             }
+                   if (bothDirections(entity)) {
+                     segment = '';

 
 

-             return null;
-           }
-         };
+                     for (j = coord.length - 1; j >= 0; j--) {
+                       segment += (j === coord.length - 1 ? 'M' : 'L') + coord[j][0] + ',' + coord[j][1];
+                     }

 
 

-         validation.type = type;
-         return validation;
-       }
+                     segments.push({
+                       id: entity.id,
+                       index: i++,
+                       d: segment
+                     });
+                   }
+                 }

 
 

-       function validationCloseNodes(context) {
-         var type = 'close_nodes';
-         var pointThresholdMeters = 0.2;
+                 offset = -span;
+               }

 
 

-         var validation = function validation(entity, graph) {
-           if (entity.type === 'node') {
-             return getIssuesForNode(entity);
-           } else if (entity.type === 'way') {
-             return getIssuesForWay(entity);
+               a = b;
+             }
+           })));
+           return segments;
+         };
+       }
+       function svgPath(projection, graph, isArea) {
+         // Explanation of magic numbers:
+         // "padding" here allows space for strokes to extend beyond the viewport,
+         // so that the stroke isn't drawn along the edge of the viewport when
+         // the shape is clipped.
+         //
+         // When drawing lines, pad viewport by 5px.
+         // When drawing areas, pad viewport by 65px in each direction to allow
+         // for 60px area fill stroke (see ".fill-partial path.fill" css rule)
+         var cache = {};
+         var padding = isArea ? 65 : 5;
+         var viewport = projection.clipExtent();
+         var paddedExtent = [[viewport[0][0] - padding, viewport[0][1] - padding], [viewport[1][0] + padding, viewport[1][1] + padding]];
+         var clip = d3_geoIdentity().clipExtent(paddedExtent).stream;
+         var project = projection.stream;
+         var path = d3_geoPath().projection({
+           stream: function stream(output) {
+             return project(clip(output));

            }
            }

+         });

 
 

-           return [];
-
-           function getIssuesForNode(node) {
-             var parentWays = graph.parentWays(node);
+         var svgpath = function svgpath(entity) {
+           if (entity.id in cache) {
+             return cache[entity.id];
+           } else {
+             return cache[entity.id] = path(entity.asGeoJSON(graph));
+           }
+         };

 
 

-             if (parentWays.length) {
-               return getIssuesForVertex(node, parentWays);
+         svgpath.geojson = function (d) {
+           if (d.__featurehash__ !== undefined) {
+             if (d.__featurehash__ in cache) {
+               return cache[d.__featurehash__];

              } else {
              } else {

-               return getIssuesForDetachedPoint(node);
+               return cache[d.__featurehash__] = path(d);

              }
              }

+           } else {
+             return path(d);

            }
            }

+         };

 
 

-           function wayTypeFor(way) {
-             if (way.tags.boundary && way.tags.boundary !== 'no') return 'boundary';
-             if (way.tags.indoor && way.tags.indoor !== 'no') return 'indoor';
-             if (way.tags.building && way.tags.building !== 'no' || way.tags['building:part'] && way.tags['building:part'] !== 'no') return 'building';
-             if (osmPathHighwayTagValues[way.tags.highway]) return 'path';
-             var parentRelations = graph.parentRelations(way);
+         return svgpath;
+       }
+       function svgPointTransform(projection) {
+         var svgpoint = function svgpoint(entity) {
+           // http://jsperf.com/short-array-join
+           var pt = projection(entity.loc);
+           return 'translate(' + pt[0] + ',' + pt[1] + ')';
+         };

 
 

-             for (var i in parentRelations) {
-               var relation = parentRelations[i];
-               if (relation.tags.type === 'boundary') return 'boundary';
+         svgpoint.geojson = function (d) {
+           return svgpoint(d.properties.entity);
+         };

 
 

-               if (relation.isMultipolygon()) {
-                 if (relation.tags.indoor && relation.tags.indoor !== 'no') return 'indoor';
-                 if (relation.tags.building && relation.tags.building !== 'no' || relation.tags['building:part'] && relation.tags['building:part'] !== 'no') return 'building';
-               }
+         return svgpoint;
+       }
+       function svgRelationMemberTags(graph) {
+         return function (entity) {
+           var tags = entity.tags;
+           var shouldCopyMultipolygonTags = !entity.hasInterestingTags();
+           graph.parentRelations(entity).forEach(function (relation) {
+             var type = relation.tags.type;
+
+             if (type === 'multipolygon' && shouldCopyMultipolygonTags || type === 'boundary') {
+               tags = Object.assign({}, relation.tags, tags);

              }
              }

+           });
+           return tags;
+         };
+       }
+       function svgSegmentWay(way, graph, activeID) {
+         // When there is no activeID, we can memoize this expensive computation
+         if (activeID === undefined) {
+           return graph["transient"](way, 'waySegments', getWaySegments);
+         } else {
+           return getWaySegments();
+         }

 
 

-             return 'other';
-           }
+         function getWaySegments() {
+           var isActiveWay = way.nodes.indexOf(activeID) !== -1;
+           var features = {
+             passive: [],
+             active: []
+           };
+           var start = {};
+           var end = {};
+           var node, type;

 
 

-           function shouldCheckWay(way) {
-             // don't flag issues where merging would create degenerate ways
-             if (way.nodes.length <= 2 || way.isClosed() && way.nodes.length <= 4) return false;
-             var bbox = way.extent(graph).bbox();
-             var hypotenuseMeters = geoSphericalDistance([bbox.minX, bbox.minY], [bbox.maxX, bbox.maxY]); // don't flag close nodes in very small ways
+           for (var i = 0; i < way.nodes.length; i++) {
+             node = graph.entity(way.nodes[i]);
+             type = svgPassiveVertex(node, graph, activeID);
+             end = {
+               node: node,
+               type: type
+             };
+
+             if (start.type !== undefined) {
+               if (start.node.id === activeID || end.node.id === activeID) ; else if (isActiveWay && (start.type === 2 || end.type === 2)) {
+                 // one adjacent vertex
+                 pushActive(start, end, i);
+               } else if (start.type === 0 && end.type === 0) {
+                 // both active vertices
+                 pushActive(start, end, i);
+               } else {
+                 pushPassive(start, end, i);
+               }
+             }

 
 

-             if (hypotenuseMeters < 1.5) return false;
-             return true;
+             start = end;

            }
 
            }
 

-           function getIssuesForWay(way) {
-             if (!shouldCheckWay(way)) return [];
-             var issues = [],
-                 nodes = graph.childNodes(way);
-
-             for (var i = 0; i < nodes.length - 1; i++) {
-               var node1 = nodes[i];
-               var node2 = nodes[i + 1];
-               var issue = getWayIssueIfAny(node1, node2, way);
-               if (issue) issues.push(issue);
-             }
+           return features;

 
 

-             return issues;
+           function pushActive(start, end, index) {
+             features.active.push({
+               type: 'Feature',
+               id: way.id + '-' + index + '-nope',
+               properties: {
+                 nope: true,
+                 target: true,
+                 entity: way,
+                 nodes: [start.node, end.node],
+                 index: index
+               },
+               geometry: {
+                 type: 'LineString',
+                 coordinates: [start.node.loc, end.node.loc]
+               }
+             });

            }
 
            }
 

-           function getIssuesForVertex(node, parentWays) {
-             var issues = [];
+           function pushPassive(start, end, index) {
+             features.passive.push({
+               type: 'Feature',
+               id: way.id + '-' + index,
+               properties: {
+                 target: true,
+                 entity: way,
+                 nodes: [start.node, end.node],
+                 index: index
+               },
+               geometry: {
+                 type: 'LineString',
+                 coordinates: [start.node.loc, end.node.loc]
+               }
+             });
+           }
+         }
+       }

 
 

-             function checkForCloseness(node1, node2, way) {
-               var issue = getWayIssueIfAny(node1, node2, way);
-               if (issue) issues.push(issue);
-             }
+       function svgTagClasses() {
+         var primaries = ['building', 'highway', 'railway', 'waterway', 'aeroway', 'aerialway', 'piste:type', 'boundary', 'power', 'amenity', 'natural', 'landuse', 'leisure', 'military', 'place', 'man_made', 'route', 'attraction', 'building:part', 'indoor'];
+         var statuses = [// nonexistent, might be built
+         'proposed', 'planned', // under maintentance or between groundbreaking and opening
+         'construction', // existent but not functional
+         'disused', // dilapidated to nonexistent
+         'abandoned', // nonexistent, still may appear in imagery
+         'dismantled', 'razed', 'demolished', 'obliterated', // existent occasionally, e.g. stormwater drainage basin
+         'intermittent'];
+         var secondaries = ['oneway', 'bridge', 'tunnel', 'embankment', 'cutting', 'barrier', 'surface', 'tracktype', 'footway', 'crossing', 'service', 'sport', 'public_transport', 'location', 'parking', 'golf', 'type', 'leisure', 'man_made', 'indoor'];

 
 

-             for (var i = 0; i < parentWays.length; i++) {
-               var parentWay = parentWays[i];
-               if (!shouldCheckWay(parentWay)) continue;
-               var lastIndex = parentWay.nodes.length - 1;
+         var _tags = function _tags(entity) {
+           return entity.tags;
+         };

 
 

-               for (var j = 0; j < parentWay.nodes.length; j++) {
-                 if (j !== 0) {
-                   if (parentWay.nodes[j - 1] === node.id) {
-                     checkForCloseness(node, graph.entity(parentWay.nodes[j]), parentWay);
-                   }
-                 }
+         var tagClasses = function tagClasses(selection) {
+           selection.each(function tagClassesEach(entity) {
+             var value = this.className;

 
 

-                 if (j !== lastIndex) {
-                   if (parentWay.nodes[j + 1] === node.id) {
-                     checkForCloseness(graph.entity(parentWay.nodes[j]), node, parentWay);
-                   }
-                 }
-               }
+             if (value.baseVal !== undefined) {
+               value = value.baseVal;

              }
 
              }
 

-             return issues;
-           }
+             var t = _tags(entity);

 
 

-           function thresholdMetersForWay(way) {
-             if (!shouldCheckWay(way)) return 0;
-             var wayType = wayTypeFor(way); // don't flag boundaries since they might be highly detailed and can't be easily verified
+             var computed = tagClasses.getClassesString(t, value);

 
 

-             if (wayType === 'boundary') return 0; // expect some features to be mapped with higher levels of detail
+             if (computed !== value) {
+               select(this).attr('class', computed);
+             }
+           });
+         };

 
 

-             if (wayType === 'indoor') return 0.01;
-             if (wayType === 'building') return 0.05;
-             if (wayType === 'path') return 0.1;
-             return 0.2;
-           }
+         tagClasses.getClassesString = function (t, value) {
+           var primary, status;
+           var i, j, k, v; // in some situations we want to render perimeter strokes a certain way

 
 

-           function getIssuesForDetachedPoint(node) {
-             var issues = [];
-             var lon = node.loc[0];
-             var lat = node.loc[1];
-             var lon_range = geoMetersToLon(pointThresholdMeters, lat) / 2;
-             var lat_range = geoMetersToLat(pointThresholdMeters) / 2;
-             var queryExtent = geoExtent([[lon - lon_range, lat - lat_range], [lon + lon_range, lat + lat_range]]);
-             var intersected = context.history().tree().intersects(queryExtent, graph);
+           var overrideGeometry;

 
 

-             for (var j = 0; j < intersected.length; j++) {
-               var nearby = intersected[j];
-               if (nearby.id === node.id) continue;
-               if (nearby.type !== 'node' || nearby.geometry(graph) !== 'point') continue;
+           if (/\bstroke\b/.test(value)) {
+             if (!!t.barrier && t.barrier !== 'no') {
+               overrideGeometry = 'line';
+             }
+           } // preserve base classes (nothing with `tag-`)

 
 

-               if (nearby.loc === node.loc || geoSphericalDistance(node.loc, nearby.loc) < pointThresholdMeters) {
-                 // allow very close points if tags indicate the z-axis might vary
-                 var zAxisKeys = {
-                   layer: true,
-                   level: true,
-                   'addr:housenumber': true,
-                   'addr:unit': true
-                 };
-                 var zAxisDifferentiates = false;

 
 

-                 for (var key in zAxisKeys) {
-                   var nodeValue = node.tags[key] || '0';
-                   var nearbyValue = nearby.tags[key] || '0';
+           var classes = value.trim().split(/\s+/).filter(function (klass) {
+             return klass.length && !/^tag-/.test(klass);
+           }).map(function (klass) {
+             // special overrides for some perimeter strokes
+             return klass === 'line' || klass === 'area' ? overrideGeometry || klass : klass;
+           }); // pick at most one primary classification tag..

 
 

-                   if (nodeValue !== nearbyValue) {
-                     zAxisDifferentiates = true;
-                     break;
-                   }
-                 }
+           for (i = 0; i < primaries.length; i++) {
+             k = primaries[i];
+             v = t[k];
+             if (!v || v === 'no') continue;

 
 

-                 if (zAxisDifferentiates) continue;
-                 issues.push(new validationIssue({
-                   type: type,
-                   subtype: 'detached',
-                   severity: 'warning',
-                   message: function message(context) {
-                     var entity = context.hasEntity(this.entityIds[0]),
-                         entity2 = context.hasEntity(this.entityIds[1]);
-                     return entity && entity2 ? _t.html('issues.close_nodes.detached.message', {
-                       feature: utilDisplayLabel(entity, context.graph()),
-                       feature2: utilDisplayLabel(entity2, context.graph())
-                     }) : '';
-                   },
-                   reference: showReference,
-                   entityIds: [node.id, nearby.id],
-                   dynamicFixes: function dynamicFixes() {
-                     return [new validationIssueFix({
-                       icon: 'iD-operation-disconnect',
-                       title: _t.html('issues.fix.move_points_apart.title')
-                     }), new validationIssueFix({
-                       icon: 'iD-icon-layers',
-                       title: _t.html('issues.fix.use_different_layers_or_levels.title')
-                     })];
-                   }
-                 }));
-               }
+             if (k === 'piste:type') {
+               // avoid a ':' in the class name
+               k = 'piste';
+             } else if (k === 'building:part') {
+               // avoid a ':' in the class name
+               k = 'building_part';

              }
 
              }
 

-             return issues;
+             primary = k;

 
 

-             function showReference(selection) {
-               var referenceText = _t('issues.close_nodes.detached.reference');
-               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(referenceText);
+             if (statuses.indexOf(v) !== -1) {
+               // e.g. `railway=abandoned`
+               status = v;
+               classes.push('tag-' + k);
+             } else {
+               classes.push('tag-' + k);
+               classes.push('tag-' + k + '-' + v);

              }
              }

-           }

 
 

-           function getWayIssueIfAny(node1, node2, way) {
-             if (node1.id === node2.id || node1.hasInterestingTags() && node2.hasInterestingTags()) {
-               return null;
-             }
+             break;
+           }

 
 

-             if (node1.loc !== node2.loc) {
-               var parentWays1 = graph.parentWays(node1);
-               var parentWays2 = new Set(graph.parentWays(node2));
-               var sharedWays = parentWays1.filter(function (parentWay) {
-                 return parentWays2.has(parentWay);
-               });
-               var thresholds = sharedWays.map(function (parentWay) {
-                 return thresholdMetersForWay(parentWay);
-               });
-               var threshold = Math.min.apply(Math, _toConsumableArray(thresholds));
-               var distance = geoSphericalDistance(node1.loc, node2.loc);
-               if (distance > threshold) return null;
-             }
+           if (!primary) {
+             for (i = 0; i < statuses.length; i++) {
+               for (j = 0; j < primaries.length; j++) {
+                 k = statuses[i] + ':' + primaries[j]; // e.g. `demolished:building=yes`

 
 

-             return new validationIssue({
-               type: type,
-               subtype: 'vertices',
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.close_nodes.message', {
-                   way: utilDisplayLabel(entity, context.graph())
-                 }) : '';
-               },
-               reference: showReference,
-               entityIds: [way.id, node1.id, node2.id],
-               loc: node1.loc,
-               dynamicFixes: function dynamicFixes() {
-                 return [new validationIssueFix({
-                   icon: 'iD-icon-plus',
-                   title: _t.html('issues.fix.merge_points.title'),
-                   onClick: function onClick(context) {
-                     var entityIds = this.issue.entityIds;
-                     var action = actionMergeNodes([entityIds[1], entityIds[2]]);
-                     context.perform(action, _t('issues.fix.merge_close_vertices.annotation'));
-                   }
-                 }), new validationIssueFix({
-                   icon: 'iD-operation-disconnect',
-                   title: _t.html('issues.fix.move_points_apart.title')
-                 })];
+                 v = t[k];
+                 if (!v || v === 'no') continue;
+                 status = statuses[i];
+                 break;

                }
                }

-             });
-
-             function showReference(selection) {
-               var referenceText = _t('issues.close_nodes.reference');
-               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(referenceText);

              }
              }

-           }
-         };
+           } // add at most one status tag, only if relates to primary tag..

 
 

-         validation.type = type;
-         return validation;
-       }

 
 

-       function validationCrossingWays(context) {
-         var type = 'crossing_ways'; // returns the way or its parent relation, whichever has a useful feature type
+           if (!status) {
+             for (i = 0; i < statuses.length; i++) {
+               k = statuses[i];
+               v = t[k];
+               if (!v || v === 'no') continue;

 
 

-         function getFeatureWithFeatureTypeTagsForWay(way, graph) {
-           if (getFeatureType(way, graph) === null) {
-             // if the way doesn't match a feature type, check its parent relations
-             var parentRels = graph.parentRelations(way);
+               if (v === 'yes') {
+                 // e.g. `railway=rail + abandoned=yes`
+                 status = k;
+               } else if (primary && primary === v) {
+                 // e.g. `railway=rail + abandoned=railway`
+                 status = k;
+               } else if (!primary && primaries.indexOf(v) !== -1) {
+                 // e.g. `abandoned=railway`
+                 status = k;
+                 primary = v;
+                 classes.push('tag-' + v);
+               } // else ignore e.g.  `highway=path + abandoned=railway`

 
 

-             for (var i = 0; i < parentRels.length; i++) {
-               var rel = parentRels[i];

 
 

-               if (getFeatureType(rel, graph) !== null) {
-                 return rel;
-               }
+               if (status) break;

              }
            }
 
              }
            }
 

-           return way;
-         }
-
-         function hasTag(tags, key) {
-           return tags[key] !== undefined && tags[key] !== 'no';
-         }
-
-         function taggedAsIndoor(tags) {
-           return hasTag(tags, 'indoor') || hasTag(tags, 'level') || tags.highway === 'corridor';
-         }
-
-         function allowsBridge(featureType) {
-           return featureType === 'highway' || featureType === 'railway' || featureType === 'waterway';
-         }
+           if (status) {
+             classes.push('tag-status');
+             classes.push('tag-status-' + status);
+           } // add any secondary tags

 
 

-         function allowsTunnel(featureType) {
-           return featureType === 'highway' || featureType === 'railway' || featureType === 'waterway';
-         } // discard

 
 

+           for (i = 0; i < secondaries.length; i++) {
+             k = secondaries[i];
+             v = t[k];
+             if (!v || v === 'no' || k === primary) continue;
+             classes.push('tag-' + k);
+             classes.push('tag-' + k + '-' + v);
+           } // For highways, look for surface tagging..

 
 

-         var ignoredBuildings = {
-           demolished: true,
-           dismantled: true,
-           proposed: true,
-           razed: true
-         };

 
 

-         function getFeatureType(entity, graph) {
-           var geometry = entity.geometry(graph);
-           if (geometry !== 'line' && geometry !== 'area') return null;
-           var tags = entity.tags;
-           if (hasTag(tags, 'building') && !ignoredBuildings[tags.building]) return 'building';
-           if (hasTag(tags, 'highway') && osmRoutableHighwayTagValues[tags.highway]) return 'highway'; // don't check railway or waterway areas
+           if (primary === 'highway' && !osmPathHighwayTagValues[t.highway] || primary === 'aeroway') {
+             var surface = t.highway === 'track' ? 'unpaved' : 'paved';

 
 

-           if (geometry !== 'line') return null;
-           if (hasTag(tags, 'railway') && osmRailwayTrackTagValues[tags.railway]) return 'railway';
-           if (hasTag(tags, 'waterway') && osmFlowingWaterwayTagValues[tags.waterway]) return 'waterway';
-           return null;
-         }
+             for (k in t) {
+               v = t[k];

 
 

-         function isLegitCrossing(tags1, featureType1, tags2, featureType2) {
-           // assume 0 by default
-           var level1 = tags1.level || '0';
-           var level2 = tags2.level || '0';
+               if (k in osmPavedTags) {
+                 surface = osmPavedTags[k][v] ? 'paved' : 'unpaved';
+               }

 
 

-           if (taggedAsIndoor(tags1) && taggedAsIndoor(tags2) && level1 !== level2) {
-             // assume features don't interact if they're indoor on different levels
-             return true;
-           } // assume 0 by default; don't use way.layer() since we account for structures here
+               if (k in osmSemipavedTags && !!osmSemipavedTags[k][v]) {
+                 surface = 'semipaved';
+               }
+             }

 
 

+             classes.push('tag-' + surface);
+           } // If this is a wikidata-tagged item, add a class for that..

 
 

-           var layer1 = tags1.layer || '0';
-           var layer2 = tags2.layer || '0';

 
 

-           if (allowsBridge(featureType1) && allowsBridge(featureType2)) {
-             if (hasTag(tags1, 'bridge') && !hasTag(tags2, 'bridge')) return true;
-             if (!hasTag(tags1, 'bridge') && hasTag(tags2, 'bridge')) return true; // crossing bridges must use different layers
+           var qid = t.wikidata || t['flag:wikidata'] || t['brand:wikidata'] || t['network:wikidata'] || t['operator:wikidata'];

 
 

-             if (hasTag(tags1, 'bridge') && hasTag(tags2, 'bridge') && layer1 !== layer2) return true;
-           } else if (allowsBridge(featureType1) && hasTag(tags1, 'bridge')) return true;else if (allowsBridge(featureType2) && hasTag(tags2, 'bridge')) return true;
+           if (qid) {
+             classes.push('tag-wikidata');
+           }

 
 

-           if (allowsTunnel(featureType1) && allowsTunnel(featureType2)) {
-             if (hasTag(tags1, 'tunnel') && !hasTag(tags2, 'tunnel')) return true;
-             if (!hasTag(tags1, 'tunnel') && hasTag(tags2, 'tunnel')) return true; // crossing tunnels must use different layers
+           return classes.join(' ').trim();
+         };

 
 

-             if (hasTag(tags1, 'tunnel') && hasTag(tags2, 'tunnel') && layer1 !== layer2) return true;
-           } else if (allowsTunnel(featureType1) && hasTag(tags1, 'tunnel')) return true;else if (allowsTunnel(featureType2) && hasTag(tags2, 'tunnel')) return true; // don't flag crossing waterways and pier/highways
+         tagClasses.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val;
+           return tagClasses;
+         };

 
 

+         return tagClasses;
+       }

 
 

-           if (featureType1 === 'waterway' && featureType2 === 'highway' && tags2.man_made === 'pier') return true;
-           if (featureType2 === 'waterway' && featureType1 === 'highway' && tags1.man_made === 'pier') return true;
+       // Patterns only work in Firefox when set directly on element.
+       // (This is not a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=750632)
+       var patterns = {
+         // tag - pattern name
+         // -or-
+         // tag - value - pattern name
+         // -or-
+         // tag - value - rules (optional tag-values, pattern name)
+         // (matches earlier rules first, so fallback should be last entry)
+         amenity: {
+           grave_yard: 'cemetery',
+           fountain: 'water_standing'
+         },
+         landuse: {
+           cemetery: [{
+             religion: 'christian',
+             pattern: 'cemetery_christian'
+           }, {
+             religion: 'buddhist',
+             pattern: 'cemetery_buddhist'
+           }, {
+             religion: 'muslim',
+             pattern: 'cemetery_muslim'
+           }, {
+             religion: 'jewish',
+             pattern: 'cemetery_jewish'
+           }, {
+             pattern: 'cemetery'
+           }],
+           construction: 'construction',
+           farmland: 'farmland',
+           farmyard: 'farmyard',
+           forest: [{
+             leaf_type: 'broadleaved',
+             pattern: 'forest_broadleaved'
+           }, {
+             leaf_type: 'needleleaved',
+             pattern: 'forest_needleleaved'
+           }, {
+             leaf_type: 'leafless',
+             pattern: 'forest_leafless'
+           }, {
+             pattern: 'forest'
+           } // same as 'leaf_type:mixed'
+           ],
+           grave_yard: 'cemetery',
+           grass: [{
+             golf: 'green',
+             pattern: 'golf_green'
+           }, {
+             pattern: 'grass'
+           }],
+           landfill: 'landfill',
+           meadow: 'meadow',
+           military: 'construction',
+           orchard: 'orchard',
+           quarry: 'quarry',
+           vineyard: 'vineyard'
+         },
+         natural: {
+           beach: 'beach',
+           grassland: 'grass',
+           sand: 'beach',
+           scrub: 'scrub',
+           water: [{
+             water: 'pond',
+             pattern: 'pond'
+           }, {
+             water: 'reservoir',
+             pattern: 'water_standing'
+           }, {
+             pattern: 'waves'
+           }],
+           wetland: [{
+             wetland: 'marsh',
+             pattern: 'wetland_marsh'
+           }, {
+             wetland: 'swamp',
+             pattern: 'wetland_swamp'
+           }, {
+             wetland: 'bog',
+             pattern: 'wetland_bog'
+           }, {
+             wetland: 'reedbed',
+             pattern: 'wetland_reedbed'
+           }, {
+             pattern: 'wetland'
+           }],
+           wood: [{
+             leaf_type: 'broadleaved',
+             pattern: 'forest_broadleaved'
+           }, {
+             leaf_type: 'needleleaved',
+             pattern: 'forest_needleleaved'
+           }, {
+             leaf_type: 'leafless',
+             pattern: 'forest_leafless'
+           }, {
+             pattern: 'forest'
+           } // same as 'leaf_type:mixed'
+           ]
+         },
+         traffic_calming: {
+           island: [{
+             surface: 'grass',
+             pattern: 'grass'
+           }],
+           chicane: [{
+             surface: 'grass',
+             pattern: 'grass'
+           }],
+           choker: [{
+             surface: 'grass',
+             pattern: 'grass'
+           }]
+         }
+       };
+       function svgTagPattern(tags) {
+         // Skip pattern filling if this is a building (buildings don't get patterns applied)
+         if (tags.building && tags.building !== 'no') {
+           return null;
+         }

 
 

-           if (featureType1 === 'building' || featureType2 === 'building') {
-             // for building crossings, different layers are enough
-             if (layer1 !== layer2) return true;
-           }
+         for (var tag in patterns) {
+           var entityValue = tags[tag];
+           if (!entityValue) continue;

 
 

-           return false;
-         } // highway values for which we shouldn't recommend connecting to waterways
+           if (typeof patterns[tag] === 'string') {
+             // extra short syntax (just tag) - pattern name
+             return 'pattern-' + patterns[tag];
+           } else {
+             var values = patterns[tag];

 
 

+             for (var value in values) {
+               if (entityValue !== value) continue;
+               var rules = values[value];

 
 

-         var highwaysDisallowingFords = {
-           motorway: true,
-           motorway_link: true,
-           trunk: true,
-           trunk_link: true,
-           primary: true,
-           primary_link: true,
-           secondary: true,
-           secondary_link: true
-         };
-         var nonCrossingHighways = {
-           track: true
-         };
+               if (typeof rules === 'string') {
+                 // short syntax - pattern name
+                 return 'pattern-' + rules;
+               } // long syntax - rule array

 
 

-         function tagsForConnectionNodeIfAllowed(entity1, entity2, graph) {
-           var featureType1 = getFeatureType(entity1, graph);
-           var featureType2 = getFeatureType(entity2, graph);
-           var geometry1 = entity1.geometry(graph);
-           var geometry2 = entity2.geometry(graph);
-           var bothLines = geometry1 === 'line' && geometry2 === 'line';

 
 

-           if (featureType1 === featureType2) {
-             if (featureType1 === 'highway') {
-               var entity1IsPath = osmPathHighwayTagValues[entity1.tags.highway];
-               var entity2IsPath = osmPathHighwayTagValues[entity2.tags.highway];
+               for (var ruleKey in rules) {
+                 var rule = rules[ruleKey];
+                 var pass = true;

 
 

-               if ((entity1IsPath || entity2IsPath) && entity1IsPath !== entity2IsPath) {
-                 // one feature is a path but not both
-                 var roadFeature = entity1IsPath ? entity2 : entity1;
+                 for (var criterion in rule) {
+                   if (criterion !== 'pattern') {
+                     // reserved for pattern name
+                     // The only rule is a required tag-value pair
+                     var v = tags[criterion];

 
 

-                 if (nonCrossingHighways[roadFeature.tags.highway]) {
-                   // don't mark path connections with certain roads as crossings
-                   return {};
+                     if (!v || v !== rule[criterion]) {
+                       pass = false;
+                       break;
+                     }
+                   }

                  }
 
                  }
 

-                 var pathFeature = entity1IsPath ? entity1 : entity2;
-
-                 if (['marked', 'unmarked'].indexOf(pathFeature.tags.crossing) !== -1) {
-                   // if the path is a crossing, match the crossing type
-                   return bothLines ? {
-                     highway: 'crossing',
-                     crossing: pathFeature.tags.crossing
-                   } : {};
-                 } // don't add a `crossing` subtag to ambiguous crossings
-
-
-                 return bothLines ? {
-                   highway: 'crossing'
-                 } : {};
-               }
-
-               return {};
-             }
-
-             if (featureType1 === 'waterway') return {};
-             if (featureType1 === 'railway') return {};
-           } else {
-             var featureTypes = [featureType1, featureType2];
-
-             if (featureTypes.indexOf('highway') !== -1) {
-               if (featureTypes.indexOf('railway') !== -1) {
-                 if (!bothLines) return {};
-                 var isTram = entity1.tags.railway === 'tram' || entity2.tags.railway === 'tram';
-
-                 if (osmPathHighwayTagValues[entity1.tags.highway] || osmPathHighwayTagValues[entity2.tags.highway]) {
-                   // path-tram connections use this tag
-                   if (isTram) return {
-                     railway: 'tram_crossing'
-                   }; // other path-rail connections use this tag
-
-                   return {
-                     railway: 'crossing'
-                   };
-                 } else {
-                   // path-tram connections use this tag
-                   if (isTram) return {
-                     railway: 'tram_level_crossing'
-                   }; // other road-rail connections use this tag
-
-                   return {
-                     railway: 'level_crossing'
-                   };
+                 if (pass) {
+                   return 'pattern-' + rule.pattern;

                  }
                }
                  }
                }

+             }
+           }
+         }

 
 

-               if (featureTypes.indexOf('waterway') !== -1) {
-                 // do not allow fords on structures
-                 if (hasTag(entity1.tags, 'tunnel') && hasTag(entity2.tags, 'tunnel')) return null;
-                 if (hasTag(entity1.tags, 'bridge') && hasTag(entity2.tags, 'bridge')) return null;
+         return null;
+       }

 
 

-                 if (highwaysDisallowingFords[entity1.tags.highway] || highwaysDisallowingFords[entity2.tags.highway]) {
-                   // do not allow fords on major highways
-                   return null;
-                 }
+       function svgAreas(projection, context) {
+         function getPatternStyle(tags) {
+           var imageID = svgTagPattern(tags);

 
 

-                 return bothLines ? {
-                   ford: 'yes'
-                 } : {};
-               }
-             }
+           if (imageID) {
+             return 'url("#ideditor-' + imageID + '")';

            }
 
            }
 

-           return null;
+           return '';

          }
 
          }
 

-         function findCrossingsByWay(way1, graph, tree) {
-           var edgeCrossInfos = [];
-           if (way1.type !== 'way') return edgeCrossInfos;
-           var taggedFeature1 = getFeatureWithFeatureTypeTagsForWay(way1, graph);
-           var way1FeatureType = getFeatureType(taggedFeature1, graph);
-           if (way1FeatureType === null) return edgeCrossInfos;
-           var checkedSingleCrossingWays = {}; // declare vars ahead of time to reduce garbage collection
-
-           var i, j;
-           var extent;
-           var n1, n2, nA, nB, nAId, nBId;
-           var segment1, segment2;
-           var oneOnly;
-           var segmentInfos, segment2Info, way2, taggedFeature2, way2FeatureType;
-           var way1Nodes = graph.childNodes(way1);
-           var comparedWays = {};
+         function drawTargets(selection, graph, entities, filter) {
+           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
+           var getPath = svgPath(projection).geojson;
+           var activeID = context.activeID();
+           var base = context.history().base(); // The targets and nopes will be MultiLineString sub-segments of the ways

 
 

-           for (i = 0; i < way1Nodes.length - 1; i++) {
-             n1 = way1Nodes[i];
-             n2 = way1Nodes[i + 1];
-             extent = geoExtent([[Math.min(n1.loc[0], n2.loc[0]), Math.min(n1.loc[1], n2.loc[1])], [Math.max(n1.loc[0], n2.loc[0]), Math.max(n1.loc[1], n2.loc[1])]]); // Optimize by only checking overlapping segments, not every segment
-             // of overlapping ways
+           var data = {
+             targets: [],
+             nopes: []
+           };
+           entities.forEach(function (way) {
+             var features = svgSegmentWay(way, graph, activeID);
+             data.targets.push.apply(data.targets, features.passive);
+             data.nopes.push.apply(data.nopes, features.active);
+           }); // Targets allow hover and vertex snapping

 
 

-             segmentInfos = tree.waySegments(extent, graph);
+           var targetData = data.targets.filter(getPath);
+           var targets = selection.selectAll('.area.target-allowed').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(targetData, function key(d) {
+             return d.id;
+           }); // exit

 
 

-             for (j = 0; j < segmentInfos.length; j++) {
-               segment2Info = segmentInfos[j]; // don't check for self-intersection in this validation
+           targets.exit().remove();

 
 

-               if (segment2Info.wayId === way1.id) continue; // skip if this way was already checked and only one issue is needed
+           var segmentWasEdited = function segmentWasEdited(d) {
+             var wayID = d.properties.entity.id; // if the whole line was edited, don't draw segment changes

 
 

-               if (checkedSingleCrossingWays[segment2Info.wayId]) continue; // mark this way as checked even if there are no crossings
+             if (!base.entities[wayID] || !fastDeepEqual(graph.entities[wayID].nodes, base.entities[wayID].nodes)) {
+               return false;
+             }

 
 

-               comparedWays[segment2Info.wayId] = true;
-               way2 = graph.hasEntity(segment2Info.wayId);
-               if (!way2) continue;
-               taggedFeature2 = getFeatureWithFeatureTypeTagsForWay(way2, graph); // only check crossing highway, waterway, building, and railway
+             return d.properties.nodes.some(function (n) {
+               return !base.entities[n.id] || !fastDeepEqual(graph.entities[n.id].loc, base.entities[n.id].loc);
+             });
+           }; // enter/update

 
 

-               way2FeatureType = getFeatureType(taggedFeature2, graph);

 
 

-               if (way2FeatureType === null || isLegitCrossing(taggedFeature1.tags, way1FeatureType, taggedFeature2.tags, way2FeatureType)) {
-                 continue;
-               } // create only one issue for building crossings
+           targets.enter().append('path').merge(targets).attr('d', getPath).attr('class', function (d) {
+             return 'way area target target-allowed ' + targetClass + d.id;
+           }).classed('segment-edited', segmentWasEdited); // NOPE

 
 

+           var nopeData = data.nopes.filter(getPath);
+           var nopes = selection.selectAll('.area.target-nope').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(nopeData, function key(d) {
+             return d.id;
+           }); // exit

 
 

-               oneOnly = way1FeatureType === 'building' || way2FeatureType === 'building';
-               nAId = segment2Info.nodes[0];
-               nBId = segment2Info.nodes[1];
+           nopes.exit().remove(); // enter/update

 
 

-               if (nAId === n1.id || nAId === n2.id || nBId === n1.id || nBId === n2.id) {
-                 // n1 or n2 is a connection node; skip
-                 continue;
-               }
+           nopes.enter().append('path').merge(nopes).attr('d', getPath).attr('class', function (d) {
+             return 'way area target target-nope ' + nopeClass + d.id;
+           }).classed('segment-edited', segmentWasEdited);
+         }

 
 

-               nA = graph.hasEntity(nAId);
-               if (!nA) continue;
-               nB = graph.hasEntity(nBId);
-               if (!nB) continue;
-               segment1 = [n1.loc, n2.loc];
-               segment2 = [nA.loc, nB.loc];
-               var point = geoLineIntersection(segment1, segment2);
+         function drawAreas(selection, graph, entities, filter) {
+           var path = svgPath(projection, graph, true);
+           var areas = {};
+           var multipolygon;
+           var base = context.history().base();

 
 

-               if (point) {
-                 edgeCrossInfos.push({
-                   wayInfos: [{
-                     way: way1,
-                     featureType: way1FeatureType,
-                     edge: [n1.id, n2.id]
-                   }, {
-                     way: way2,
-                     featureType: way2FeatureType,
-                     edge: [nA.id, nB.id]
-                   }],
-                   crossPoint: point
-                 });
+           for (var i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             if (entity.geometry(graph) !== 'area') continue;
+             multipolygon = osmIsOldMultipolygonOuterMember(entity, graph);

 
 

-                 if (oneOnly) {
-                   checkedSingleCrossingWays[way2.id] = true;
-                   break;
-                 }
-               }
+             if (multipolygon) {
+               areas[multipolygon.id] = {
+                 entity: multipolygon.mergeTags(entity.tags),
+                 area: Math.abs(entity.area(graph))
+               };
+             } else if (!areas[entity.id]) {
+               areas[entity.id] = {
+                 entity: entity,
+                 area: Math.abs(entity.area(graph))
+               };

              }
            }
 
              }
            }
 

-           return edgeCrossInfos;
-         }
+           var fills = Object.values(areas).filter(function hasPath(a) {
+             return path(a.entity);
+           });
+           fills.sort(function areaSort(a, b) {
+             return b.area - a.area;
+           });
+           fills = fills.map(function (a) {
+             return a.entity;
+           });
+           var strokes = fills.filter(function (area) {
+             return area.type === 'way';
+           });
+           var data = {
+             clip: fills,
+             shadow: strokes,
+             stroke: strokes,
+             fill: fills
+           };
+           var clipPaths = context.surface().selectAll('defs').selectAll('.clipPath-osm').filter(filter).data(data.clip, osmEntity.key);
+           clipPaths.exit().remove();
+           var clipPathsEnter = clipPaths.enter().append('clipPath').attr('class', 'clipPath-osm').attr('id', function (entity) {
+             return 'ideditor-' + entity.id + '-clippath';
+           });
+           clipPathsEnter.append('path');
+           clipPaths.merge(clipPathsEnter).selectAll('path').attr('d', path);
+           var drawLayer = selection.selectAll('.layer-osm.areas');
+           var touchLayer = selection.selectAll('.layer-touch.areas'); // Draw areas..

 
 

-         function waysToCheck(entity, graph) {
-           var featureType = getFeatureType(entity, graph);
-           if (!featureType) return [];
+           var areagroup = drawLayer.selectAll('g.areagroup').data(['fill', 'shadow', 'stroke']);
+           areagroup = areagroup.enter().append('g').attr('class', function (d) {
+             return 'areagroup area-' + d;
+           }).merge(areagroup);
+           var paths = areagroup.selectAll('path').filter(filter).data(function (layer) {
+             return data[layer];
+           }, osmEntity.key);
+           paths.exit().remove();
+           var fillpaths = selection.selectAll('.area-fill path.area').nodes();
+           var bisect = d3_bisector(function (node) {
+             return -node.__data__.area(graph);
+           }).left;

 
 

-           if (entity.type === 'way') {
-             return [entity];
-           } else if (entity.type === 'relation') {
-             return entity.members.reduce(function (array, member) {
-               if (member.type === 'way' && ( // only look at geometry ways
-               !member.role || member.role === 'outer' || member.role === 'inner')) {
-                 var entity = graph.hasEntity(member.id); // don't add duplicates
+           function sortedByArea(entity) {
+             if (this._parent.__data__ === 'fill') {
+               return fillpaths[bisect(fillpaths, -entity.area(graph))];
+             }
+           }

 
 

-                 if (entity && array.indexOf(entity) === -1) {
-                   array.push(entity);
-                 }
-               }
+           paths = paths.enter().insert('path', sortedByArea).merge(paths).each(function (entity) {
+             var layer = this.parentNode.__data__;
+             this.setAttribute('class', entity.type + ' area ' + layer + ' ' + entity.id);

 
 

-               return array;
-             }, []);
-           }
+             if (layer === 'fill') {
+               this.setAttribute('clip-path', 'url(#ideditor-' + entity.id + '-clippath)');
+               this.style.fill = this.style.stroke = getPatternStyle(entity.tags);
+             }
+           }).classed('added', function (d) {
+             return !base.entities[d.id];
+           }).classed('geometry-edited', function (d) {
+             return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].nodes, base.entities[d.id].nodes);
+           }).classed('retagged', function (d) {
+             return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
+           }).call(svgTagClasses()).attr('d', path); // Draw touch targets..

 
 

-           return [];
+           touchLayer.call(drawTargets, graph, data.stroke, filter);

          }
 
          }
 

-         var validation = function checkCrossingWays(entity, graph) {
-           var tree = context.history().tree();
-           var ways = waysToCheck(entity, graph);
-           var issues = []; // declare these here to reduce garbage collection
+         return drawAreas;
+       }

 
 

-           var wayIndex, crossingIndex, crossings;
+       var fastJsonStableStringify = function fastJsonStableStringify(data, opts) {
+         if (!opts) opts = {};
+         if (typeof opts === 'function') opts = {
+           cmp: opts
+         };
+         var cycles = typeof opts.cycles === 'boolean' ? opts.cycles : false;

 
 

-           for (wayIndex in ways) {
-             crossings = findCrossingsByWay(ways[wayIndex], graph, tree);
+         var cmp = opts.cmp && function (f) {
+           return function (node) {
+             return function (a, b) {
+               var aobj = {
+                 key: a,
+                 value: node[a]
+               };
+               var bobj = {
+                 key: b,
+                 value: node[b]
+               };
+               return f(aobj, bobj);
+             };
+           };
+         }(opts.cmp);

 
 

-             for (crossingIndex in crossings) {
-               issues.push(createIssue(crossings[crossingIndex], graph));
-             }
+         var seen = [];
+         return function stringify(node) {
+           if (node && node.toJSON && typeof node.toJSON === 'function') {
+             node = node.toJSON();

            }
 
            }
 

-           return issues;
-         };
+           if (node === undefined) return;
+           if (typeof node == 'number') return isFinite(node) ? '' + node : 'null';
+           if (_typeof(node) !== 'object') return JSON.stringify(node);
+           var i, out;

 
 

-         function createIssue(crossing, graph) {
-           // use the entities with the tags that define the feature type
-           crossing.wayInfos.sort(function (way1Info, way2Info) {
-             var type1 = way1Info.featureType;
-             var type2 = way2Info.featureType;
+           if (Array.isArray(node)) {
+             out = '[';

 
 

-             if (type1 === type2) {
-               return utilDisplayLabel(way1Info.way, graph) > utilDisplayLabel(way2Info.way, graph);
-             } else if (type1 === 'waterway') {
-               return true;
-             } else if (type2 === 'waterway') {
-               return false;
+             for (i = 0; i < node.length; i++) {
+               if (i) out += ',';
+               out += stringify(node[i]) || 'null';

              }
 
              }
 

-             return type1 < type2;
-           });
-           var entities = crossing.wayInfos.map(function (wayInfo) {
-             return getFeatureWithFeatureTypeTagsForWay(wayInfo.way, graph);
-           });
-           var edges = [crossing.wayInfos[0].edge, crossing.wayInfos[1].edge];
-           var featureTypes = [crossing.wayInfos[0].featureType, crossing.wayInfos[1].featureType];
-           var connectionTags = tagsForConnectionNodeIfAllowed(entities[0], entities[1], graph);
-           var featureType1 = crossing.wayInfos[0].featureType;
-           var featureType2 = crossing.wayInfos[1].featureType;
-           var isCrossingIndoors = taggedAsIndoor(entities[0].tags) && taggedAsIndoor(entities[1].tags);
-           var isCrossingTunnels = allowsTunnel(featureType1) && hasTag(entities[0].tags, 'tunnel') && allowsTunnel(featureType2) && hasTag(entities[1].tags, 'tunnel');
-           var isCrossingBridges = allowsBridge(featureType1) && hasTag(entities[0].tags, 'bridge') && allowsBridge(featureType2) && hasTag(entities[1].tags, 'bridge');
-           var subtype = [featureType1, featureType2].sort().join('-');
-           var crossingTypeID = subtype;
+             return out + ']';
+           }

 
 

-           if (isCrossingIndoors) {
-             crossingTypeID = 'indoor-indoor';
-           } else if (isCrossingTunnels) {
-             crossingTypeID = 'tunnel-tunnel';
-           } else if (isCrossingBridges) {
-             crossingTypeID = 'bridge-bridge';
+           if (node === null) return 'null';
+
+           if (seen.indexOf(node) !== -1) {
+             if (cycles) return JSON.stringify('__cycle__');
+             throw new TypeError('Converting circular structure to JSON');

            }
 
            }
 

-           if (connectionTags && (isCrossingIndoors || isCrossingTunnels || isCrossingBridges)) {
-             crossingTypeID += '_connectable';
+           var seenIndex = seen.push(node) - 1;
+           var keys = Object.keys(node).sort(cmp && cmp(node));
+           out = '';
+
+           for (i = 0; i < keys.length; i++) {
+             var key = keys[i];
+             var value = stringify(node[key]);
+             if (!value) continue;
+             if (out) out += ',';
+             out += JSON.stringify(key) + ':' + value;

            }
 
            }
 

-           return new validationIssue({
-             type: type,
-             subtype: subtype,
-             severity: 'warning',
-             message: function message(context) {
-               var graph = context.graph();
-               var entity1 = graph.hasEntity(this.entityIds[0]),
-                   entity2 = graph.hasEntity(this.entityIds[1]);
-               return entity1 && entity2 ? _t.html('issues.crossing_ways.message', {
-                 feature: utilDisplayLabel(entity1, graph),
-                 feature2: utilDisplayLabel(entity2, graph)
-               }) : '';
-             },
-             reference: showReference,
-             entityIds: entities.map(function (entity) {
-               return entity.id;
-             }),
-             data: {
-               edges: edges,
-               featureTypes: featureTypes,
-               connectionTags: connectionTags
-             },
-             // differentiate based on the loc since two ways can cross multiple times
-             hash: crossing.crossPoint.toString() + // if the edges change then so does the fix
-             edges.slice().sort(function (edge1, edge2) {
-               // order to assure hash is deterministic
-               return edge1[0] < edge2[0] ? -1 : 1;
-             }).toString() + // ensure the correct connection tags are added in the fix
-             JSON.stringify(connectionTags),
-             loc: crossing.crossPoint,
-             dynamicFixes: function dynamicFixes(context) {
-               var mode = context.mode();
-               if (!mode || mode.id !== 'select' || mode.selectedIDs().length !== 1) return [];
-               var selectedIndex = this.entityIds[0] === mode.selectedIDs()[0] ? 0 : 1;
-               var selectedFeatureType = this.data.featureTypes[selectedIndex];
-               var otherFeatureType = this.data.featureTypes[selectedIndex === 0 ? 1 : 0];
-               var fixes = [];
+           seen.splice(seenIndex, 1);
+           return '{' + out + '}';
+         }(data);
+       };

 
 

-               if (connectionTags) {
-                 fixes.push(makeConnectWaysFix(this.data.connectionTags));
-               }
+       var $$2 = _export;
+       var $entries = objectToArray.entries;

 
 

-               if (isCrossingIndoors) {
-                 fixes.push(new validationIssueFix({
-                   icon: 'iD-icon-layers',
-                   title: _t.html('issues.fix.use_different_levels.title')
-                 }));
-               } else if (isCrossingTunnels || isCrossingBridges || featureType1 === 'building' || featureType2 === 'building') {
-                 fixes.push(makeChangeLayerFix('higher'));
-                 fixes.push(makeChangeLayerFix('lower')); // can only add bridge/tunnel if both features are lines
-               } else if (context.graph().geometry(this.entityIds[0]) === 'line' && context.graph().geometry(this.entityIds[1]) === 'line') {
-                 // don't recommend adding bridges to waterways since they're uncommon
-                 if (allowsBridge(selectedFeatureType) && selectedFeatureType !== 'waterway') {
-                   fixes.push(makeAddBridgeOrTunnelFix('add_a_bridge', 'temaki-bridge', 'bridge'));
-                 } // don't recommend adding tunnels under waterways since they're uncommon
+       // `Object.entries` method
+       // https://tc39.es/ecma262/#sec-object.entries
+       $$2({ target: 'Object', stat: true }, {
+         entries: function entries(O) {
+           return $entries(O);
+         }
+       });

 
 

+       var _marked = /*#__PURE__*/regeneratorRuntime.mark(gpxGen),
+           _marked3 = /*#__PURE__*/regeneratorRuntime.mark(kmlGen);

 
 

-                 var skipTunnelFix = otherFeatureType === 'waterway' && selectedFeatureType !== 'waterway';
+       // cast array x into numbers
+       // get the content of a text node, if any
+       function nodeVal(x) {
+         if (x && x.normalize) {
+           x.normalize();
+         }

 
 

-                 if (allowsTunnel(selectedFeatureType) && !skipTunnelFix) {
-                   fixes.push(makeAddBridgeOrTunnelFix('add_a_tunnel', 'temaki-tunnel', 'tunnel'));
-                 }
-               } // repositioning the features is always an option
+         return x && x.textContent || "";
+       } // one Y child of X, if any, otherwise null
+
+
+       function get1(x, y) {
+         var n = x.getElementsByTagName(y);
+         return n.length ? n[0] : null;
+       }
+
+       function getLineStyle(extensions) {
+         var style = {};
+
+         if (extensions) {
+           var lineStyle = get1(extensions, "line");
+
+           if (lineStyle) {
+             var color = nodeVal(get1(lineStyle, "color")),
+                 opacity = parseFloat(nodeVal(get1(lineStyle, "opacity"))),
+                 width = parseFloat(nodeVal(get1(lineStyle, "width")));
+             if (color) style.stroke = color;
+             if (!isNaN(opacity)) style["stroke-opacity"] = opacity; // GPX width is in mm, convert to px with 96 px per inch
+
+             if (!isNaN(width)) style["stroke-width"] = width * 96 / 25.4;
+           }
+         }

 
 

+         return style;
+       } // get the contents of multiple text nodes, if present

 
 

-               fixes.push(new validationIssueFix({
-                 icon: 'iD-operation-move',
-                 title: _t.html('issues.fix.reposition_features.title')
-               }));
-               return fixes;
-             }
-           });

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.crossing_ways.' + crossingTypeID + '.reference'));
-           }
+       function getMulti(x, ys) {
+         var o = {};
+         var n;
+         var k;
+
+         for (k = 0; k < ys.length; k++) {
+           n = get1(x, ys[k]);
+           if (n) o[ys[k]] = nodeVal(n);

          }
 
          }
 

-         function makeAddBridgeOrTunnelFix(fixTitleID, iconName, bridgeOrTunnel) {
-           return new validationIssueFix({
-             icon: iconName,
-             title: _t.html('issues.fix.' + fixTitleID + '.title'),
-             onClick: function onClick(context) {
-               var mode = context.mode();
-               if (!mode || mode.id !== 'select') return;
-               var selectedIDs = mode.selectedIDs();
-               if (selectedIDs.length !== 1) return;
-               var selectedWayID = selectedIDs[0];
-               if (!context.hasEntity(selectedWayID)) return;
-               var resultWayIDs = [selectedWayID];
-               var edge, crossedEdge, crossedWayID;
+         return o;
+       }

 
 

-               if (this.issue.entityIds[0] === selectedWayID) {
-                 edge = this.issue.data.edges[0];
-                 crossedEdge = this.issue.data.edges[1];
-                 crossedWayID = this.issue.entityIds[1];
-               } else {
-                 edge = this.issue.data.edges[1];
-                 crossedEdge = this.issue.data.edges[0];
-                 crossedWayID = this.issue.entityIds[0];
-               }
+       function getProperties$1(node) {
+         var prop = getMulti(node, ["name", "cmt", "desc", "type", "time", "keywords"]); // Parse additional data from our Garmin extension(s)

 
 

-               var crossingLoc = this.issue.loc;
-               var projection = context.projection;
+         var extensions = node.getElementsByTagNameNS("http://www.garmin.com/xmlschemas/GpxExtensions/v3", "*");

 
 

-               var action = function actionAddStructure(graph) {
-                 var edgeNodes = [graph.entity(edge[0]), graph.entity(edge[1])];
-                 var crossedWay = graph.hasEntity(crossedWayID); // use the explicit width of the crossed feature as the structure length, if available
+         for (var i = 0; i < extensions.length; i++) {
+           var extension = extensions[i]; // Ignore nested extensions, like those on routepoints or trackpoints

 
 

-                 var structLengthMeters = crossedWay && crossedWay.tags.width && parseFloat(crossedWay.tags.width);
+           if (extension.parentNode.parentNode === node) {
+             prop[extension.tagName.replace(":", "_")] = nodeVal(extension);
+           }
+         }

 
 

-                 if (!structLengthMeters) {
-                   // if no explicit width is set, approximate the width based on the tags
-                   structLengthMeters = crossedWay && crossedWay.impliedLineWidthMeters();
-                 }
+         var links = node.getElementsByTagName("link");
+         if (links.length) prop.links = [];

 
 

-                 if (structLengthMeters) {
-                   if (getFeatureType(crossedWay, graph) === 'railway') {
-                     // bridges over railways are generally much longer than the rail bed itself, compensate
-                     structLengthMeters *= 2;
-                   }
-                 } else {
-                   // should ideally never land here since all rail/water/road tags should have an implied width
-                   structLengthMeters = 8;
-                 }
+         for (var _i = 0; _i < links.length; _i++) {
+           prop.links.push(Object.assign({
+             href: links[_i].getAttribute("href")
+           }, getMulti(links[_i], ["text", "type"])));
+         }

 
 

-                 var a1 = geoAngle(edgeNodes[0], edgeNodes[1], projection) + Math.PI;
-                 var a2 = geoAngle(graph.entity(crossedEdge[0]), graph.entity(crossedEdge[1]), projection) + Math.PI;
-                 var crossingAngle = Math.max(a1, a2) - Math.min(a1, a2);
-                 if (crossingAngle > Math.PI) crossingAngle -= Math.PI; // lengthen the structure to account for the angle of the crossing
+         return prop;
+       }

 
 

-                 structLengthMeters = structLengthMeters / 2 / Math.sin(crossingAngle) * 2; // add padding since the structure must extend past the edges of the crossed feature
+       function coordPair$1(x) {
+         var ll = [parseFloat(x.getAttribute("lon")), parseFloat(x.getAttribute("lat"))];
+         var ele = get1(x, "ele"); // handle namespaced attribute in browser

 
 

-                 structLengthMeters += 4; // clamp the length to a reasonable range
+         var heart = get1(x, "gpxtpx:hr") || get1(x, "hr");
+         var time = get1(x, "time");
+         var e;

 
 

-                 structLengthMeters = Math.min(Math.max(structLengthMeters, 4), 50);
+         if (ele) {
+           e = parseFloat(nodeVal(ele));

 
 

-                 function geomToProj(geoPoint) {
-                   return [geoLonToMeters(geoPoint[0], geoPoint[1]), geoLatToMeters(geoPoint[1])];
-                 }
+           if (!isNaN(e)) {
+             ll.push(e);
+           }
+         }

 
 

-                 function projToGeom(projPoint) {
-                   var lat = geoMetersToLat(projPoint[1]);
-                   return [geoMetersToLon(projPoint[0], lat), lat];
-                 }
+         var result = {
+           coordinates: ll,
+           time: time ? nodeVal(time) : null,
+           extendedValues: []
+         };

 
 

-                 var projEdgeNode1 = geomToProj(edgeNodes[0].loc);
-                 var projEdgeNode2 = geomToProj(edgeNodes[1].loc);
-                 var projectedAngle = geoVecAngle(projEdgeNode1, projEdgeNode2);
-                 var projectedCrossingLoc = geomToProj(crossingLoc);
-                 var linearToSphericalMetersRatio = geoVecLength(projEdgeNode1, projEdgeNode2) / geoSphericalDistance(edgeNodes[0].loc, edgeNodes[1].loc);
+         if (heart) {
+           result.extendedValues.push(["heart", parseFloat(nodeVal(heart))]);
+         }

 
 

-                 function locSphericalDistanceFromCrossingLoc(angle, distanceMeters) {
-                   var lengthSphericalMeters = distanceMeters * linearToSphericalMetersRatio;
-                   return projToGeom([projectedCrossingLoc[0] + Math.cos(angle) * lengthSphericalMeters, projectedCrossingLoc[1] + Math.sin(angle) * lengthSphericalMeters]);
-                 }
+         var extensions = get1(x, "extensions");

 
 

-                 var endpointLocGetter1 = function endpointLocGetter1(lengthMeters) {
-                   return locSphericalDistanceFromCrossingLoc(projectedAngle, lengthMeters);
-                 };
+         if (extensions !== null) {
+           for (var _i2 = 0, _arr = ["speed", "course", "hAcc", "vAcc"]; _i2 < _arr.length; _i2++) {
+             var name = _arr[_i2];
+             var v = parseFloat(nodeVal(get1(extensions, name)));

 
 

-                 var endpointLocGetter2 = function endpointLocGetter2(lengthMeters) {
-                   return locSphericalDistanceFromCrossingLoc(projectedAngle + Math.PI, lengthMeters);
-                 }; // avoid creating very short edges from splitting too close to another node
+             if (!isNaN(v)) {
+               result.extendedValues.push([name, v]);
+             }
+           }
+         }

 
 

+         return result;
+       }

 
 

-                 var minEdgeLengthMeters = 0.55; // decide where to bound the structure along the way, splitting as necessary
+       function getRoute(node) {
+         var line = getPoints$1(node, "rtept");
+         if (!line) return;
+         return {
+           type: "Feature",
+           properties: Object.assign(getProperties$1(node), getLineStyle(get1(node, "extensions")), {
+             _gpxType: "rte"
+           }),
+           geometry: {
+             type: "LineString",
+             coordinates: line.line
+           }
+         };
+       }

 
 

-                 function determineEndpoint(edge, endNode, locGetter) {
-                   var newNode;
-                   var idealLengthMeters = structLengthMeters / 2; // distance between the crossing location and the end of the edge,
-                   // the maximum length of this side of the structure
+       function getPoints$1(node, pointname) {
+         var pts = node.getElementsByTagName(pointname);
+         if (pts.length < 2) return; // Invalid line in GeoJSON

 
 

-                   var crossingToEdgeEndDistance = geoSphericalDistance(crossingLoc, endNode.loc);
+         var line = [];
+         var times = [];
+         var extendedValues = {};

 
 

-                   if (crossingToEdgeEndDistance - idealLengthMeters > minEdgeLengthMeters) {
-                     // the edge is long enough to insert a new node
-                     // the loc that would result in the full expected length
-                     var idealNodeLoc = locGetter(idealLengthMeters);
-                     newNode = osmNode();
-                     graph = actionAddMidpoint({
-                       loc: idealNodeLoc,
-                       edge: edge
-                     }, newNode)(graph);
-                   } else {
-                     var edgeCount = 0;
-                     endNode.parentIntersectionWays(graph).forEach(function (way) {
-                       way.nodes.forEach(function (nodeID) {
-                         if (nodeID === endNode.id) {
-                           if (endNode.id === way.first() && endNode.id !== way.last() || endNode.id === way.last() && endNode.id !== way.first()) {
-                             edgeCount += 1;
-                           } else {
-                             edgeCount += 2;
-                           }
-                         }
-                       });
-                     });
+         for (var i = 0; i < pts.length; i++) {
+           var c = coordPair$1(pts[i]);
+           line.push(c.coordinates);
+           if (c.time) times.push(c.time);

 
 

-                     if (edgeCount >= 3) {
-                       // the end node is a junction, try to leave a segment
-                       // between it and the structure - #7202
-                       var insetLength = crossingToEdgeEndDistance - minEdgeLengthMeters;
+           for (var j = 0; j < c.extendedValues.length; j++) {
+             var _c$extendedValues$j = _slicedToArray(c.extendedValues[j], 2),
+                 name = _c$extendedValues$j[0],
+                 val = _c$extendedValues$j[1];

 
 

-                       if (insetLength > minEdgeLengthMeters) {
-                         var insetNodeLoc = locGetter(insetLength);
-                         newNode = osmNode();
-                         graph = actionAddMidpoint({
-                           loc: insetNodeLoc,
-                           edge: edge
-                         }, newNode)(graph);
-                       }
-                     }
-                   } // if the edge is too short to subdivide as desired, then
-                   // just bound the structure at the existing end node
+             var plural = name === "heart" ? name : name + "s";

 
 

+             if (!extendedValues[plural]) {
+               extendedValues[plural] = Array(pts.length).fill(null);
+             }

 
 

-                   if (!newNode) newNode = endNode;
-                   var splitAction = actionSplit([newNode.id]).limitWays(resultWayIDs); // only split selected or created ways
-                   // do the split
+             extendedValues[plural][i] = val;
+           }
+         }

 
 

-                   graph = splitAction(graph);
+         return {
+           line: line,
+           times: times,
+           extendedValues: extendedValues
+         };
+       }

 
 

-                   if (splitAction.getCreatedWayIDs().length) {
-                     resultWayIDs.push(splitAction.getCreatedWayIDs()[0]);
-                   }
+       function getTrack(node) {
+         var segments = node.getElementsByTagName("trkseg");
+         var track = [];
+         var times = [];
+         var extractedLines = [];

 
 

-                   return newNode;
-                 }
+         for (var i = 0; i < segments.length; i++) {
+           var line = getPoints$1(segments[i], "trkpt");

 
 

-                 var structEndNode1 = determineEndpoint(edge, edgeNodes[1], endpointLocGetter1);
-                 var structEndNode2 = determineEndpoint([edgeNodes[0].id, structEndNode1.id], edgeNodes[0], endpointLocGetter2);
-                 var structureWay = resultWayIDs.map(function (id) {
-                   return graph.entity(id);
-                 }).find(function (way) {
-                   return way.nodes.indexOf(structEndNode1.id) !== -1 && way.nodes.indexOf(structEndNode2.id) !== -1;
-                 });
-                 var tags = Object.assign({}, structureWay.tags); // copy tags
+           if (line) {
+             extractedLines.push(line);
+             if (line.times && line.times.length) times.push(line.times);
+           }
+         }

 
 

-                 if (bridgeOrTunnel === 'bridge') {
-                   tags.bridge = 'yes';
-                   tags.layer = '1';
-                 } else {
-                   var tunnelValue = 'yes';
+         if (extractedLines.length === 0) return;
+         var multi = extractedLines.length > 1;
+         var properties = Object.assign(getProperties$1(node), getLineStyle(get1(node, "extensions")), {
+           _gpxType: "trk"
+         }, times.length ? {
+           coordinateProperties: {
+             times: multi ? times : times[0]
+           }
+         } : {});

 
 

-                   if (getFeatureType(structureWay, graph) === 'waterway') {
-                     // use `tunnel=culvert` for waterways by default
-                     tunnelValue = 'culvert';
-                   }
+         for (var _i3 = 0; _i3 < extractedLines.length; _i3++) {
+           var _line = extractedLines[_i3];
+           track.push(_line.line);

 
 

-                   tags.tunnel = tunnelValue;
-                   tags.layer = '-1';
-                 } // apply the structure tags to the way
+           for (var _i4 = 0, _Object$entries = Object.entries(_line.extendedValues); _i4 < _Object$entries.length; _i4++) {
+             var _Object$entries$_i = _slicedToArray(_Object$entries[_i4], 2),
+                 name = _Object$entries$_i[0],
+                 val = _Object$entries$_i[1];

 
 

+             var props = properties;

 
 

-                 graph = actionChangeTags(structureWay.id, tags)(graph);
-                 return graph;
-               };
+             if (name === "heart") {
+               if (!properties.coordinateProperties) {
+                 properties.coordinateProperties = {};
+               }

 
 

-               context.perform(action, _t('issues.fix.' + fixTitleID + '.annotation'));
-               context.enter(modeSelect(context, resultWayIDs));
+               props = properties.coordinateProperties;

              }
              }

-           });
+
+             if (multi) {
+               if (!props[name]) props[name] = extractedLines.map(function (line) {
+                 return new Array(line.line.length).fill(null);
+               });
+               props[name][_i3] = val;
+             } else {
+               props[name] = val;
+             }
+           }

          }
 
          }
 

-         function makeConnectWaysFix(connectionTags) {
-           var fixTitleID = 'connect_features';
+         return {
+           type: "Feature",
+           properties: properties,
+           geometry: multi ? {
+             type: "MultiLineString",
+             coordinates: track
+           } : {
+             type: "LineString",
+             coordinates: track[0]
+           }
+         };
+       }

 
 

-           if (connectionTags.ford) {
-             fixTitleID = 'connect_using_ford';
+       function getPoint(node) {
+         return {
+           type: "Feature",
+           properties: Object.assign(getProperties$1(node), getMulti(node, ["sym"])),
+           geometry: {
+             type: "Point",
+             coordinates: coordPair$1(node).coordinates

            }
            }

+         };
+       }

 
 

-           return new validationIssueFix({
-             icon: 'iD-icon-crossing',
-             title: _t.html('issues.fix.' + fixTitleID + '.title'),
-             onClick: function onClick(context) {
-               var loc = this.issue.loc;
-               var connectionTags = this.issue.data.connectionTags;
-               var edges = this.issue.data.edges;
-               context.perform(function actionConnectCrossingWays(graph) {
-                 // create the new node for the points
-                 var node = osmNode({
-                   loc: loc,
-                   tags: connectionTags
-                 });
-                 graph = graph.replace(node);
-                 var nodesToMerge = [node.id];
-                 var mergeThresholdInMeters = 0.75;
-                 edges.forEach(function (edge) {
-                   var edgeNodes = [graph.entity(edge[0]), graph.entity(edge[1])];
-                   var closestNodeInfo = geoSphericalClosestNode(edgeNodes, loc); // if there is already a point nearby, use that
+       function gpxGen(doc) {
+         var tracks, routes, waypoints, i, feature, _i5, _feature, _i6;

 
 

-                   if (closestNodeInfo.distance < mergeThresholdInMeters) {
-                     nodesToMerge.push(closestNodeInfo.node.id); // else add the new node to the way
-                   } else {
-                     graph = actionAddMidpoint({
-                       loc: loc,
-                       edge: edge
-                     }, node)(graph);
-                   }
-                 });
+         return regeneratorRuntime.wrap(function gpxGen$(_context) {
+           while (1) {
+             switch (_context.prev = _context.next) {
+               case 0:
+                 tracks = doc.getElementsByTagName("trk");
+                 routes = doc.getElementsByTagName("rte");
+                 waypoints = doc.getElementsByTagName("wpt");
+                 i = 0;

 
 

-                 if (nodesToMerge.length > 1) {
-                   // if we're using nearby nodes, merge them with the new node
-                   graph = actionMergeNodes(nodesToMerge, loc)(graph);
+               case 4:
+                 if (!(i < tracks.length)) {
+                   _context.next = 12;
+                   break;

                  }
 
                  }
 

-                 return graph;
-               }, _t('issues.fix.connect_crossing_features.annotation'));
-             }
-           });
-         }
+                 feature = getTrack(tracks[i]);

 
 

-         function makeChangeLayerFix(higherOrLower) {
-           return new validationIssueFix({
-             icon: 'iD-icon-' + (higherOrLower === 'higher' ? 'up' : 'down'),
-             title: _t.html('issues.fix.tag_this_as_' + higherOrLower + '.title'),
-             onClick: function onClick(context) {
-               var mode = context.mode();
-               if (!mode || mode.id !== 'select') return;
-               var selectedIDs = mode.selectedIDs();
-               if (selectedIDs.length !== 1) return;
-               var selectedID = selectedIDs[0];
-               if (!this.issue.entityIds.some(function (entityId) {
-                 return entityId === selectedID;
-               })) return;
-               var entity = context.hasEntity(selectedID);
-               if (!entity) return;
-               var tags = Object.assign({}, entity.tags); // shallow copy
+                 if (!feature) {
+                   _context.next = 9;
+                   break;
+                 }

 
 

-               var layer = tags.layer && Number(tags.layer);
+                 _context.next = 9;
+                 return feature;

 
 

-               if (layer && !isNaN(layer)) {
-                 if (higherOrLower === 'higher') {
-                   layer += 1;
-                 } else {
-                   layer -= 1;
+               case 9:
+                 i++;
+                 _context.next = 4;
+                 break;
+
+               case 12:
+                 _i5 = 0;
+
+               case 13:
+                 if (!(_i5 < routes.length)) {
+                   _context.next = 21;
+                   break;

                  }
                  }

-               } else {
-                 if (higherOrLower === 'higher') {
-                   layer = 1;
-                 } else {
-                   layer = -1;
+
+                 _feature = getRoute(routes[_i5]);
+
+                 if (!_feature) {
+                   _context.next = 18;
+                   break;

                  }
                  }

-               }

 
 

-               tags.layer = layer.toString();
-               context.perform(actionChangeTags(entity.id, tags), _t('operations.change_tags.annotation'));
+                 _context.next = 18;
+                 return _feature;
+
+               case 18:
+                 _i5++;
+                 _context.next = 13;
+                 break;
+
+               case 21:
+                 _i6 = 0;
+
+               case 22:
+                 if (!(_i6 < waypoints.length)) {
+                   _context.next = 28;
+                   break;
+                 }
+
+                 _context.next = 25;
+                 return getPoint(waypoints[_i6]);
+
+               case 25:
+                 _i6++;
+                 _context.next = 22;
+                 break;
+
+               case 28:
+               case "end":
+                 return _context.stop();

              }
              }

-           });
-         }
+           }
+         }, _marked);
+       }

 
 

-         validation.type = type;
-         return validation;
+       function gpx(doc) {
+         return {
+           type: "FeatureCollection",
+           features: Array.from(gpxGen(doc))
+         };

        }
 
        }
 

-       function validationDisconnectedWay() {
-         var type = 'disconnected_way';
+       var removeSpace = /\s*/g;
+       var trimSpace = /^\s*|\s*$/g;
+       var splitSpace = /\s+/; // generate a short, numeric hash of a string

 
 

-         function isTaggedAsHighway(entity) {
-           return osmRoutableHighwayTagValues[entity.tags.highway];
+       function okhash(x) {
+         if (!x || !x.length) return 0;
+         var h = 0;
+
+         for (var i = 0; i < x.length; i++) {
+           h = (h << 5) - h + x.charCodeAt(i) | 0;

          }
 
          }
 

-         var validation = function checkDisconnectedWay(entity, graph) {
-           var routingIslandWays = routingIslandForEntity(entity);
-           if (!routingIslandWays) return [];
-           return [new validationIssue({
-             type: type,
-             subtype: 'highway',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = this.entityIds.length && context.hasEntity(this.entityIds[0]);
-               var label = entity && utilDisplayLabel(entity, context.graph());
-               return _t.html('issues.disconnected_way.routable.message', {
-                 count: this.entityIds.length,
-                 highway: label
-               });
-             },
-             reference: showReference,
-             entityIds: Array.from(routingIslandWays).map(function (way) {
-               return way.id;
-             }),
-             dynamicFixes: makeFixes
-           })];
+         return h;
+       } // get one coordinate from a coordinate array, if any

 
 

-           function makeFixes(context) {
-             var fixes = [];
-             var singleEntity = this.entityIds.length === 1 && context.hasEntity(this.entityIds[0]);

 
 

-             if (singleEntity) {
-               if (singleEntity.type === 'way' && !singleEntity.isClosed()) {
-                 var textDirection = _mainLocalizer.textDirection();
-                 var startFix = makeContinueDrawingFixIfAllowed(textDirection, singleEntity.first(), 'start');
-                 if (startFix) fixes.push(startFix);
-                 var endFix = makeContinueDrawingFixIfAllowed(textDirection, singleEntity.last(), 'end');
-                 if (endFix) fixes.push(endFix);
-               }
+       function coord1(v) {
+         return v.replace(removeSpace, "").split(",").map(parseFloat);
+       } // get all coordinates from a coordinate array as [[],[]]

 
 

-               if (!fixes.length) {
-                 fixes.push(new validationIssueFix({
-                   title: _t.html('issues.fix.connect_feature.title')
-                 }));
-               }

 
 

-               fixes.push(new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.delete_feature.title'),
-                 entityIds: [singleEntity.id],
-                 onClick: function onClick(context) {
-                   var id = this.issue.entityIds[0];
-                   var operation = operationDelete(context, [id]);
+       function coord(v) {
+         return v.replace(trimSpace, "").split(splitSpace).map(coord1);
+       }

 
 

-                   if (!operation.disabled()) {
-                     operation();
-                   }
-                 }
-               }));
-             } else {
-               fixes.push(new validationIssueFix({
-                 title: _t.html('issues.fix.connect_features.title')
-               }));
-             }
+       function xml2str(node) {
+         if (node.xml !== undefined) return node.xml;

 
 

-             return fixes;
+         if (node.tagName) {
+           var output = node.tagName;
+
+           for (var i = 0; i < node.attributes.length; i++) {
+             output += node.attributes[i].name + node.attributes[i].value;

            }
 
            }
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.disconnected_way.routable.reference'));
+           for (var _i9 = 0; _i9 < node.childNodes.length; _i9++) {
+             output += xml2str(node.childNodes[_i9]);

            }
 
            }
 

-           function routingIslandForEntity(entity) {
-             var routingIsland = new Set(); // the interconnected routable features
+           return output;
+         }

 
 

-             var waysToCheck = []; // the queue of remaining routable ways to traverse
+         if (node.nodeName === "#text") {
+           return (node.nodeValue || node.value || "").trim();
+         }

 
 

-             function queueParentWays(node) {
-               graph.parentWays(node).forEach(function (parentWay) {
-                 if (!routingIsland.has(parentWay) && // only check each feature once
-                 isRoutableWay(parentWay, false)) {
-                   // only check routable features
-                   routingIsland.add(parentWay);
-                   waysToCheck.push(parentWay);
-                 }
-               });
-             }
+         if (node.nodeName === "#cdata-section") {
+           return node.nodeValue;
+         }

 
 

-             if (entity.type === 'way' && isRoutableWay(entity, true)) {
-               routingIsland.add(entity);
-               waysToCheck.push(entity);
-             } else if (entity.type === 'node' && isRoutableNode(entity)) {
-               routingIsland.add(entity);
-               queueParentWays(entity);
-             } else {
-               // this feature isn't routable, cannot be a routing island
-               return null;
-             }
+         return "";
+       }

 
 

-             while (waysToCheck.length) {
-               var wayToCheck = waysToCheck.pop();
-               var childNodes = graph.childNodes(wayToCheck);
+       var geotypes = ["Polygon", "LineString", "Point", "Track", "gx:Track"];

 
 

-               for (var i in childNodes) {
-                 var vertex = childNodes[i];
+       function kmlColor(properties, elem, prefix) {
+         var v = nodeVal(get1(elem, "color")) || "";
+         var colorProp = prefix == "stroke" || prefix === "fill" ? prefix : prefix + "-color";

 
 

-                 if (isConnectedVertex(vertex)) {
-                   // found a link to the wider network, not a routing island
-                   return null;
-                 }
+         if (v.substr(0, 1) === "#") {
+           v = v.substr(1);
+         }

 
 

-                 if (isRoutableNode(vertex)) {
-                   routingIsland.add(vertex);
-                 }
+         if (v.length === 6 || v.length === 3) {
+           properties[colorProp] = v;
+         } else if (v.length === 8) {
+           properties[prefix + "-opacity"] = parseInt(v.substr(0, 2), 16) / 255;
+           properties[colorProp] = "#" + v.substr(6, 2) + v.substr(4, 2) + v.substr(2, 2);
+         }
+       }

 
 

-                 queueParentWays(vertex);
-               }
-             } // no network link found, this is a routing island, return its members
+       function numericProperty(properties, elem, source, target) {
+         var val = parseFloat(nodeVal(get1(elem, source)));
+         if (!isNaN(val)) properties[target] = val;
+       }

 
 

+       function gxCoords(root) {
+         var elems = root.getElementsByTagName("coord");
+         var coords = [];
+         var times = [];
+         if (elems.length === 0) elems = root.getElementsByTagName("gx:coord");

 
 

-             return routingIsland;
-           }
+         for (var i = 0; i < elems.length; i++) {
+           coords.push(nodeVal(elems[i]).split(" ").map(parseFloat));
+         }

 
 

-           function isConnectedVertex(vertex) {
-             // assume ways overlapping unloaded tiles are connected to the wider road network  - #5938
-             var osm = services.osm;
-             if (osm && !osm.isDataLoaded(vertex.loc)) return true; // entrances are considered connected
+         var timeElems = root.getElementsByTagName("when");

 
 

-             if (vertex.tags.entrance && vertex.tags.entrance !== 'no') return true;
-             if (vertex.tags.amenity === 'parking_entrance') return true;
-             return false;
-           }
+         for (var j = 0; j < timeElems.length; j++) {
+           times.push(nodeVal(timeElems[j]));
+         }

 
 

-           function isRoutableNode(node) {
-             // treat elevators as distinct features in the highway network
-             if (node.tags.highway === 'elevator') return true;
-             return false;
+         return {
+           coords: coords,
+           times: times
+         };
+       }
+
+       function getGeometry(root) {
+         var geomNode;
+         var geomNodes;
+         var i;
+         var j;
+         var k;
+         var geoms = [];
+         var coordTimes = [];
+
+         if (get1(root, "MultiGeometry")) {
+           return getGeometry(get1(root, "MultiGeometry"));
+         }
+
+         if (get1(root, "MultiTrack")) {
+           return getGeometry(get1(root, "MultiTrack"));
+         }
+
+         if (get1(root, "gx:MultiTrack")) {
+           return getGeometry(get1(root, "gx:MultiTrack"));
+         }
+
+         for (i = 0; i < geotypes.length; i++) {
+           geomNodes = root.getElementsByTagName(geotypes[i]);
+
+           if (geomNodes) {
+             for (j = 0; j < geomNodes.length; j++) {
+               geomNode = geomNodes[j];
+
+               if (geotypes[i] === "Point") {
+                 geoms.push({
+                   type: "Point",
+                   coordinates: coord1(nodeVal(get1(geomNode, "coordinates")))
+                 });
+               } else if (geotypes[i] === "LineString") {
+                 geoms.push({
+                   type: "LineString",
+                   coordinates: coord(nodeVal(get1(geomNode, "coordinates")))
+                 });
+               } else if (geotypes[i] === "Polygon") {
+                 var rings = geomNode.getElementsByTagName("LinearRing"),
+                     coords = [];
+
+                 for (k = 0; k < rings.length; k++) {
+                   coords.push(coord(nodeVal(get1(rings[k], "coordinates"))));
+                 }
+
+                 geoms.push({
+                   type: "Polygon",
+                   coordinates: coords
+                 });
+               } else if (geotypes[i] === "Track" || geotypes[i] === "gx:Track") {
+                 var track = gxCoords(geomNode);
+                 geoms.push({
+                   type: "LineString",
+                   coordinates: track.coords
+                 });
+                 if (track.times.length) coordTimes.push(track.times);
+               }
+             }

            }
            }

+         }

 
 

-           function isRoutableWay(way, ignoreInnerWays) {
-             if (isTaggedAsHighway(way) || way.tags.route === 'ferry') return true;
-             return graph.parentRelations(way).some(function (parentRelation) {
-               if (parentRelation.tags.type === 'route' && parentRelation.tags.route === 'ferry') return true;
-               if (parentRelation.isMultipolygon() && isTaggedAsHighway(parentRelation) && (!ignoreInnerWays || parentRelation.memberById(way.id).role !== 'inner')) return true;
-               return false;
-             });
+         return {
+           geoms: geoms,
+           coordTimes: coordTimes
+         };
+       }
+
+       function getPlacemark(root, styleIndex, styleMapIndex, styleByHash) {
+         var geomsAndTimes = getGeometry(root);
+         var i;
+         var properties = {};
+         var name = nodeVal(get1(root, "name"));
+         var address = nodeVal(get1(root, "address"));
+         var styleUrl = nodeVal(get1(root, "styleUrl"));
+         var description = nodeVal(get1(root, "description"));
+         var timeSpan = get1(root, "TimeSpan");
+         var timeStamp = get1(root, "TimeStamp");
+         var extendedData = get1(root, "ExtendedData");
+         var iconStyle = get1(root, "IconStyle");
+         var labelStyle = get1(root, "LabelStyle");
+         var lineStyle = get1(root, "LineStyle");
+         var polyStyle = get1(root, "PolyStyle");
+         var visibility = get1(root, "visibility");
+         if (name) properties.name = name;
+         if (address) properties.address = address;
+
+         if (styleUrl) {
+           if (styleUrl[0] !== "#") {
+             styleUrl = "#" + styleUrl;

            }
 
            }
 

-           function makeContinueDrawingFixIfAllowed(textDirection, vertexID, whichEnd) {
-             var vertex = graph.hasEntity(vertexID);
-             if (!vertex || vertex.tags.noexit === 'yes') return null;
-             var useLeftContinue = whichEnd === 'start' && textDirection === 'ltr' || whichEnd === 'end' && textDirection === 'rtl';
-             return new validationIssueFix({
-               icon: 'iD-operation-continue' + (useLeftContinue ? '-left' : ''),
-               title: _t.html('issues.fix.continue_from_' + whichEnd + '.title'),
-               entityIds: [vertexID],
-               onClick: function onClick(context) {
-                 var wayId = this.issue.entityIds[0];
-                 var way = context.hasEntity(wayId);
-                 var vertexId = this.entityIds[0];
-                 var vertex = context.hasEntity(vertexId);
-                 if (!way || !vertex) return; // make sure the vertex is actually visible and editable
+           properties.styleUrl = styleUrl;

 
 

-                 var map = context.map();
+           if (styleIndex[styleUrl]) {
+             properties.styleHash = styleIndex[styleUrl];
+           }
+
+           if (styleMapIndex[styleUrl]) {
+             properties.styleMapHash = styleMapIndex[styleUrl];
+             properties.styleHash = styleIndex[styleMapIndex[styleUrl].normal];
+           } // Try to populate the lineStyle or polyStyle since we got the style hash

 
 

-                 if (!context.editable() || !map.trimmedExtent().contains(vertex.loc)) {
-                   map.zoomToEase(vertex);
-                 }

 
 

-                 context.enter(modeDrawLine(context, wayId, context.graph(), 'line', way.affix(vertexId), true));
-               }
-             });
+           var style = styleByHash[properties.styleHash];
+
+           if (style) {
+             if (!iconStyle) iconStyle = get1(style, "IconStyle");
+             if (!labelStyle) labelStyle = get1(style, "LabelStyle");
+             if (!lineStyle) lineStyle = get1(style, "LineStyle");
+             if (!polyStyle) polyStyle = get1(style, "PolyStyle");

            }
            }

-         };
+         }

 
 

-         validation.type = type;
-         return validation;
-       }
+         if (description) properties.description = description;

 
 

-       function validationFormatting() {
-         var type = 'invalid_format';
+         if (timeSpan) {
+           var begin = nodeVal(get1(timeSpan, "begin"));
+           var end = nodeVal(get1(timeSpan, "end"));
+           properties.timespan = {
+             begin: begin,
+             end: end
+           };
+         }

 
 

-         var validation = function validation(entity) {
-           var issues = [];
+         if (timeStamp) {
+           properties.timestamp = nodeVal(get1(timeStamp, "when"));
+         }

 
 

-           function isValidEmail(email) {
-             // Emails in OSM are going to be official so they should be pretty simple
-             // Using negated lists to better support all possible unicode characters (#6494)
-             var valid_email = /^[^\(\)\\,":;<>@\[\]]+@[^\(\)\\,":;<>@\[\]\.]+(?:\.[a-z0-9-]+)*$/i; // An empty value is also acceptable
+         if (iconStyle) {
+           kmlColor(properties, iconStyle, "icon");
+           numericProperty(properties, iconStyle, "scale", "icon-scale");
+           numericProperty(properties, iconStyle, "heading", "icon-heading");
+           var hotspot = get1(iconStyle, "hotSpot");

 
 

-             return !email || valid_email.test(email);
-           }
-           /*
-           function isSchemePresent(url) {
-               var valid_scheme = /^https?:\/\//i;
-               return (!url || valid_scheme.test(url));
+           if (hotspot) {
+             var left = parseFloat(hotspot.getAttribute("x"));
+             var top = parseFloat(hotspot.getAttribute("y"));
+             if (!isNaN(left) && !isNaN(top)) properties["icon-offset"] = [left, top];

            }
            }

-           */

 
 

+           var icon = get1(iconStyle, "Icon");

 
 

-           function showReferenceEmail(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.invalid_format.email.reference'));
+           if (icon) {
+             var href = nodeVal(get1(icon, "href"));
+             if (href) properties.icon = href;

            }
            }

-           /*
-           function showReferenceWebsite(selection) {
-               selection.selectAll('.issue-reference')
-                   .data([0])
-                   .enter()
-                   .append('div')
-                   .attr('class', 'issue-reference')
-                   .html(t.html('issues.invalid_format.website.reference'));
+         }
+
+         if (labelStyle) {
+           kmlColor(properties, labelStyle, "label");
+           numericProperty(properties, labelStyle, "scale", "label-scale");
+         }
+
+         if (lineStyle) {
+           kmlColor(properties, lineStyle, "stroke");
+           numericProperty(properties, lineStyle, "width", "stroke-width");
+         }
+
+         if (polyStyle) {
+           kmlColor(properties, polyStyle, "fill");
+           var fill = nodeVal(get1(polyStyle, "fill"));
+           var outline = nodeVal(get1(polyStyle, "outline"));
+           if (fill) properties["fill-opacity"] = fill === "1" ? properties["fill-opacity"] || 1 : 0;
+           if (outline) properties["stroke-opacity"] = outline === "1" ? properties["stroke-opacity"] || 1 : 0;
+         }
+
+         if (extendedData) {
+           var datas = extendedData.getElementsByTagName("Data"),
+               simpleDatas = extendedData.getElementsByTagName("SimpleData");
+
+           for (i = 0; i < datas.length; i++) {
+             properties[datas[i].getAttribute("name")] = nodeVal(get1(datas[i], "value"));

            }
            }

-            if (entity.tags.website) {
-               // Multiple websites are possible
-               // If ever we support ES6, arrow functions make this nicer
-               var websites = entity.tags.website
-                   .split(';')
-                   .map(function(s) { return s.trim(); })
-                   .filter(function(x) { return !isSchemePresent(x); });
-                if (websites.length) {
-                   issues.push(new validationIssue({
-                       type: type,
-                       subtype: 'website',
-                       severity: 'warning',
-                       message: function(context) {
-                           var entity = context.hasEntity(this.entityIds[0]);
-                           return entity ? t.html('issues.invalid_format.website.message' + this.data,
-                               { feature: utilDisplayLabel(entity, context.graph()), site: websites.join(', ') }) : '';
-                       },
-                       reference: showReferenceWebsite,
-                       entityIds: [entity.id],
-                       hash: websites.join(),
-                       data: (websites.length > 1) ? '_multi' : ''
-                   }));
-               }
+
+           for (i = 0; i < simpleDatas.length; i++) {
+             properties[simpleDatas[i].getAttribute("name")] = nodeVal(simpleDatas[i]);

            }
            }

-           */
+         }

 
 

+         if (visibility) {
+           properties.visibility = nodeVal(visibility);
+         }

 
 

-           if (entity.tags.email) {
-             // Multiple emails are possible
-             var emails = entity.tags.email.split(';').map(function (s) {
-               return s.trim();
-             }).filter(function (x) {
-               return !isValidEmail(x);
-             });
+         if (geomsAndTimes.coordTimes.length) {
+           properties.coordinateProperties = {
+             times: geomsAndTimes.coordTimes.length === 1 ? geomsAndTimes.coordTimes[0] : geomsAndTimes.coordTimes
+           };
+         }

 
 

-             if (emails.length) {
-               issues.push(new validationIssue({
-                 type: type,
-                 subtype: 'email',
-                 severity: 'warning',
-                 message: function message(context) {
-                   var entity = context.hasEntity(this.entityIds[0]);
-                   return entity ? _t.html('issues.invalid_format.email.message' + this.data, {
-                     feature: utilDisplayLabel(entity, context.graph()),
-                     email: emails.join(', ')
-                   }) : '';
-                 },
-                 reference: showReferenceEmail,
-                 entityIds: [entity.id],
-                 hash: emails.join(),
-                 data: emails.length > 1 ? '_multi' : ''
-               }));
+         var feature = {
+           type: "Feature",
+           geometry: geomsAndTimes.geoms.length === 0 ? null : geomsAndTimes.geoms.length === 1 ? geomsAndTimes.geoms[0] : {
+             type: "GeometryCollection",
+             geometries: geomsAndTimes.geoms
+           },
+           properties: properties
+         };
+         if (root.getAttribute("id")) feature.id = root.getAttribute("id");
+         return feature;
+       }
+
+       function kmlGen(doc) {
+         var styleIndex, styleByHash, styleMapIndex, placemarks, styles, styleMaps, k, hash, l, pairs, pairsMap, m, j, feature;
+         return regeneratorRuntime.wrap(function kmlGen$(_context3) {
+           while (1) {
+             switch (_context3.prev = _context3.next) {
+               case 0:
+                 // styleindex keeps track of hashed styles in order to match feature
+                 styleIndex = {};
+                 styleByHash = {}; // stylemapindex keeps track of style maps to expose in properties
+
+                 styleMapIndex = {}; // atomic geospatial types supported by KML - MultiGeometry is
+                 // handled separately
+                 // all root placemarks in the file
+
+                 placemarks = doc.getElementsByTagName("Placemark");
+                 styles = doc.getElementsByTagName("Style");
+                 styleMaps = doc.getElementsByTagName("StyleMap");
+
+                 for (k = 0; k < styles.length; k++) {
+                   hash = okhash(xml2str(styles[k])).toString(16);
+                   styleIndex["#" + styles[k].getAttribute("id")] = hash;
+                   styleByHash[hash] = styles[k];
+                 }
+
+                 for (l = 0; l < styleMaps.length; l++) {
+                   styleIndex["#" + styleMaps[l].getAttribute("id")] = okhash(xml2str(styleMaps[l])).toString(16);
+                   pairs = styleMaps[l].getElementsByTagName("Pair");
+                   pairsMap = {};
+
+                   for (m = 0; m < pairs.length; m++) {
+                     pairsMap[nodeVal(get1(pairs[m], "key"))] = nodeVal(get1(pairs[m], "styleUrl"));
+                   }
+
+                   styleMapIndex["#" + styleMaps[l].getAttribute("id")] = pairsMap;
+                 }
+
+                 j = 0;
+
+               case 9:
+                 if (!(j < placemarks.length)) {
+                   _context3.next = 17;
+                   break;
+                 }
+
+                 feature = getPlacemark(placemarks[j], styleIndex, styleMapIndex, styleByHash);
+
+                 if (!feature) {
+                   _context3.next = 14;
+                   break;
+                 }
+
+                 _context3.next = 14;
+                 return feature;
+
+               case 14:
+                 j++;
+                 _context3.next = 9;
+                 break;
+
+               case 17:
+               case "end":
+                 return _context3.stop();

              }
            }
              }
            }

+         }, _marked3);
+       }

 
 

-           return issues;
+       function kml(doc) {
+         return {
+           type: "FeatureCollection",
+           features: Array.from(kmlGen(doc))

          };
          };

-
-         validation.type = type;
-         return validation;

        }
 
        }
 

-       function validationHelpRequest(context) {
-         var type = 'help_request';
+       var _initialized = false;
+       var _enabled = false;

 
 

-         var validation = function checkFixmeTag(entity) {
-           if (!entity.tags.fixme) return []; // don't flag fixmes on features added by the user
+       var _geojson;

 
 

-           if (entity.version === undefined) return [];
+       function svgData(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-           if (entity.v !== undefined) {
-             var baseEntity = context.history().base().hasEntity(entity.id); // don't flag fixmes added by the user on existing features
+         var _showLabels = true;
+         var detected = utilDetect();
+         var layer = select(null);

 
 

-             if (!baseEntity || !baseEntity.tags.fixme) return [];
-           }
+         var _vtService;

 
 

-           return [new validationIssue({
-             type: type,
-             subtype: 'fixme_tag',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               return entity ? _t.html('issues.fixme_tag.message', {
-                 feature: utilDisplayLabel(entity, context.graph())
-               }) : '';
-             },
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 title: _t.html('issues.fix.address_the_concern.title')
-               })];
-             },
-             reference: showReference,
-             entityIds: [entity.id]
-           })];
+         var _fileList;

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.fixme_tag.reference'));
-           }
-         };
+         var _template;

 
 

-         validation.type = type;
-         return validation;
-       }
+         var _src;

 
 

-       function validationImpossibleOneway() {
-         var type = 'impossible_oneway';
+         function init() {
+           if (_initialized) return; // run once

 
 

-         var validation = function checkImpossibleOneway(entity, graph) {
-           if (entity.type !== 'way' || entity.geometry(graph) !== 'line') return [];
-           if (entity.isClosed()) return [];
-           if (!typeForWay(entity)) return [];
-           if (!isOneway(entity)) return [];
-           var firstIssues = issuesForNode(entity, entity.first());
-           var lastIssues = issuesForNode(entity, entity.last());
-           return firstIssues.concat(lastIssues);
+           _geojson = {};
+           _enabled = true;

 
 

-           function typeForWay(way) {
-             if (way.geometry(graph) !== 'line') return null;
-             if (osmRoutableHighwayTagValues[way.tags.highway]) return 'highway';
-             if (osmFlowingWaterwayTagValues[way.tags.waterway]) return 'waterway';
-             return null;
+           function over(d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             d3_event.dataTransfer.dropEffect = 'copy';

            }
 
            }
 

-           function isOneway(way) {
-             if (way.tags.oneway === 'yes') return true;
-             if (way.tags.oneway) return false;
+           context.container().attr('dropzone', 'copy').on('drop.svgData', function (d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             if (!detected.filedrop) return;
+             drawData.fileList(d3_event.dataTransfer.files);
+           }).on('dragenter.svgData', over).on('dragexit.svgData', over).on('dragover.svgData', over);
+           _initialized = true;
+         }

 
 

-             for (var key in way.tags) {
-               if (osmOneWayTags[key] && osmOneWayTags[key][way.tags[key]]) {
-                 return true;
-               }
-             }
+         function getService() {
+           if (services.vectorTile && !_vtService) {
+             _vtService = services.vectorTile;

 
 

-             return false;
+             _vtService.event.on('loadedData', throttledRedraw);
+           } else if (!services.vectorTile && _vtService) {
+             _vtService = null;

            }
 
            }
 

-           function nodeOccursMoreThanOnce(way, nodeID) {
-             var occurrences = 0;
+           return _vtService;
+         }

 
 

-             for (var index in way.nodes) {
-               if (way.nodes[index] === nodeID) {
-                 occurrences += 1;
-                 if (occurrences > 1) return true;
-               }
-             }
+         function showLayer() {
+           layerOn();
+           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
+             dispatch.call('change');
+           });
+         }

 
 

-             return false;
-           }
+         function hideLayer() {
+           throttledRedraw.cancel();
+           layer.transition().duration(250).style('opacity', 0).on('end', layerOff);
+         }

 
 

-           function isConnectedViaOtherTypes(way, node) {
-             var wayType = typeForWay(way);
+         function layerOn() {
+           layer.style('display', 'block');
+         }

 
 

-             if (wayType === 'highway') {
-               // entrances are considered connected
-               if (node.tags.entrance && node.tags.entrance !== 'no') return true;
-               if (node.tags.amenity === 'parking_entrance') return true;
-             } else if (wayType === 'waterway') {
-               if (node.id === way.first()) {
-                 // multiple waterways may start at the same spring
-                 if (node.tags.natural === 'spring') return true;
-               } else {
-                 // multiple waterways may end at the same drain
-                 if (node.tags.manhole === 'drain') return true;
-               }
+         function layerOff() {
+           layer.selectAll('.viewfield-group').remove();
+           layer.style('display', 'none');
+         } // ensure that all geojson features in a collection have IDs
+
+
+         function ensureIDs(gj) {
+           if (!gj) return null;
+
+           if (gj.type === 'FeatureCollection') {
+             for (var i = 0; i < gj.features.length; i++) {
+               ensureFeatureID(gj.features[i]);

              }
              }

+           } else {
+             ensureFeatureID(gj);
+           }

 
 

-             return graph.parentWays(node).some(function (parentWay) {
-               if (parentWay.id === way.id) return false;
+           return gj;
+         } // ensure that each single Feature object has a unique ID

 
 

-               if (wayType === 'highway') {
-                 // allow connections to highway areas
-                 if (parentWay.geometry(graph) === 'area' && osmRoutableHighwayTagValues[parentWay.tags.highway]) return true; // count connections to ferry routes as connected

 
 

-                 if (parentWay.tags.route === 'ferry') return true;
-                 return graph.parentRelations(parentWay).some(function (parentRelation) {
-                   if (parentRelation.tags.type === 'route' && parentRelation.tags.route === 'ferry') return true; // allow connections to highway multipolygons
+         function ensureFeatureID(feature) {
+           if (!feature) return;
+           feature.__featurehash__ = utilHashcode(fastJsonStableStringify(feature));
+           return feature;
+         } // Prefer an array of Features instead of a FeatureCollection

 
 

-                   return parentRelation.isMultipolygon() && osmRoutableHighwayTagValues[parentRelation.tags.highway];
-                 });
-               } else if (wayType === 'waterway') {
-                 // multiple waterways may start or end at a water body at the same node
-                 if (parentWay.tags.natural === 'water' || parentWay.tags.natural === 'coastline') return true;
-               }

 
 

-               return false;
-             });
+         function getFeatures(gj) {
+           if (!gj) return [];
+
+           if (gj.type === 'FeatureCollection') {
+             return gj.features;
+           } else {
+             return [gj];

            }
            }

+         }

 
 

-           function issuesForNode(way, nodeID) {
-             var isFirst = nodeID === way.first();
-             var wayType = typeForWay(way); // ignore if this way is self-connected at this node
+         function featureKey(d) {
+           return d.__featurehash__;
+         }

 
 

-             if (nodeOccursMoreThanOnce(way, nodeID)) return [];
-             var osm = services.osm;
-             if (!osm) return [];
-             var node = graph.hasEntity(nodeID); // ignore if this node or its tile are unloaded
+         function isPolygon(d) {
+           return d.geometry.type === 'Polygon' || d.geometry.type === 'MultiPolygon';
+         }

 
 

-             if (!node || !osm.isDataLoaded(node.loc)) return [];
-             if (isConnectedViaOtherTypes(way, node)) return [];
-             var attachedWaysOfSameType = graph.parentWays(node).filter(function (parentWay) {
-               if (parentWay.id === way.id) return false;
-               return typeForWay(parentWay) === wayType;
-             }); // assume it's okay for waterways to start or end disconnected for now
+         function clipPathID(d) {
+           return 'ideditor-data-' + d.__featurehash__ + '-clippath';
+         }

 
 

-             if (wayType === 'waterway' && attachedWaysOfSameType.length === 0) return [];
-             var attachedOneways = attachedWaysOfSameType.filter(function (attachedWay) {
-               return isOneway(attachedWay);
-             }); // ignore if the way is connected to some non-oneway features
+         function featureClasses(d) {
+           return ['data' + d.__featurehash__, d.geometry.type, isPolygon(d) ? 'area' : '', d.__layerID__ || ''].filter(Boolean).join(' ');
+         }

 
 

-             if (attachedOneways.length < attachedWaysOfSameType.length) return [];
+         function drawData(selection) {
+           var vtService = getService();
+           var getPath = svgPath(projection).geojson;
+           var getAreaPath = svgPath(projection, null, true).geojson;
+           var hasData = drawData.hasData();
+           layer = selection.selectAll('.layer-mapdata').data(_enabled && hasData ? [0] : []);
+           layer.exit().remove();
+           layer = layer.enter().append('g').attr('class', 'layer-mapdata').merge(layer);
+           var surface = context.surface();
+           if (!surface || surface.empty()) return; // not ready to draw yet, starting up
+           // Gather data

 
 

-             if (attachedOneways.length) {
-               var connectedEndpointsOkay = attachedOneways.some(function (attachedOneway) {
-                 if ((isFirst ? attachedOneway.first() : attachedOneway.last()) !== nodeID) return true;
-                 if (nodeOccursMoreThanOnce(attachedOneway, nodeID)) return true;
-                 return false;
-               });
-               if (connectedEndpointsOkay) return [];
-             }
+           var geoData, polygonData;

 
 

-             var placement = isFirst ? 'start' : 'end',
-                 messageID = wayType + '.',
-                 referenceID = wayType + '.';
+           if (_template && vtService) {
+             // fetch data from vector tile service
+             var sourceID = _template;
+             vtService.loadTiles(sourceID, _template, projection);
+             geoData = vtService.data(sourceID, projection);
+           } else {
+             geoData = getFeatures(_geojson);
+           }

 
 

-             if (wayType === 'waterway') {
-               messageID += 'connected.' + placement;
-               referenceID += 'connected';
-             } else {
-               messageID += placement;
-               referenceID += placement;
-             }
+           geoData = geoData.filter(getPath);
+           polygonData = geoData.filter(isPolygon); // Draw clip paths for polygons

 
 

-             return [new validationIssue({
-               type: type,
-               subtype: wayType,
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.impossible_oneway.' + messageID + '.message', {
-                   feature: utilDisplayLabel(entity, context.graph())
-                 }) : '';
-               },
-               reference: getReference(referenceID),
-               entityIds: [way.id, node.id],
-               dynamicFixes: function dynamicFixes() {
-                 var fixes = [];
+           var clipPaths = surface.selectAll('defs').selectAll('.clipPath-data').data(polygonData, featureKey);
+           clipPaths.exit().remove();
+           var clipPathsEnter = clipPaths.enter().append('clipPath').attr('class', 'clipPath-data').attr('id', clipPathID);
+           clipPathsEnter.append('path');
+           clipPaths.merge(clipPathsEnter).selectAll('path').attr('d', getAreaPath); // Draw fill, shadow, stroke layers

 
 

-                 if (attachedOneways.length) {
-                   fixes.push(new validationIssueFix({
-                     icon: 'iD-operation-reverse',
-                     title: _t.html('issues.fix.reverse_feature.title'),
-                     entityIds: [way.id],
-                     onClick: function onClick(context) {
-                       var id = this.issue.entityIds[0];
-                       context.perform(actionReverse(id), _t('operations.reverse.annotation.line', {
-                         n: 1
-                       }));
-                     }
-                   }));
-                 }
+           var datagroups = layer.selectAll('g.datagroup').data(['fill', 'shadow', 'stroke']);
+           datagroups = datagroups.enter().append('g').attr('class', function (d) {
+             return 'datagroup datagroup-' + d;
+           }).merge(datagroups); // Draw paths

 
 

-                 if (node.tags.noexit !== 'yes') {
-                   var textDirection = _mainLocalizer.textDirection();
-                   var useLeftContinue = isFirst && textDirection === 'ltr' || !isFirst && textDirection === 'rtl';
-                   fixes.push(new validationIssueFix({
-                     icon: 'iD-operation-continue' + (useLeftContinue ? '-left' : ''),
-                     title: _t.html('issues.fix.continue_from_' + (isFirst ? 'start' : 'end') + '.title'),
-                     onClick: function onClick(context) {
-                       var entityID = this.issue.entityIds[0];
-                       var vertexID = this.issue.entityIds[1];
-                       var way = context.entity(entityID);
-                       var vertex = context.entity(vertexID);
-                       continueDrawing(way, vertex, context);
-                     }
-                   }));
-                 }
+           var pathData = {
+             fill: polygonData,
+             shadow: geoData,
+             stroke: geoData
+           };
+           var paths = datagroups.selectAll('path').data(function (layer) {
+             return pathData[layer];
+           }, featureKey); // exit

 
 

-                 return fixes;
-               },
-               loc: node.loc
-             })];
+           paths.exit().remove(); // enter/update

 
 

-             function getReference(referenceID) {
-               return function showReference(selection) {
-                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.impossible_oneway.' + referenceID + '.reference'));
-               };
-             }
-           }
-         };
+           paths = paths.enter().append('path').attr('class', function (d) {
+             var datagroup = this.parentNode.__data__;
+             return 'pathdata ' + datagroup + ' ' + featureClasses(d);
+           }).attr('clip-path', function (d) {
+             var datagroup = this.parentNode.__data__;
+             return datagroup === 'fill' ? 'url(#' + clipPathID(d) + ')' : null;
+           }).merge(paths).attr('d', function (d) {
+             var datagroup = this.parentNode.__data__;
+             return datagroup === 'fill' ? getAreaPath(d) : getPath(d);
+           }); // Draw labels

 
 

-         function continueDrawing(way, vertex, context) {
-           // make sure the vertex is actually visible and editable
-           var map = context.map();
+           layer.call(drawLabels, 'label-halo', geoData).call(drawLabels, 'label', geoData);

 
 

-           if (!context.editable() || !map.trimmedExtent().contains(vertex.loc)) {
-             map.zoomToEase(vertex);
+           function drawLabels(selection, textClass, data) {
+             var labelPath = d3_geoPath(projection);
+             var labelData = data.filter(function (d) {
+               return _showLabels && d.properties && (d.properties.desc || d.properties.name);
+             });
+             var labels = selection.selectAll('text.' + textClass).data(labelData, featureKey); // exit
+
+             labels.exit().remove(); // enter/update
+
+             labels = labels.enter().append('text').attr('class', function (d) {
+               return textClass + ' ' + featureClasses(d);
+             }).merge(labels).text(function (d) {
+               return d.properties.desc || d.properties.name;
+             }).attr('x', function (d) {
+               var centroid = labelPath.centroid(d);
+               return centroid[0] + 11;
+             }).attr('y', function (d) {
+               var centroid = labelPath.centroid(d);
+               return centroid[1];
+             });

            }
            }

+         }

 
 

-           context.enter(modeDrawLine(context, way.id, context.graph(), 'line', way.affix(vertex.id), true));
+         function getExtension(fileName) {
+           if (!fileName) return;
+           var re = /\.(gpx|kml|(geo)?json)$/i;
+           var match = fileName.toLowerCase().match(re);
+           return match && match.length && match[0];
+         }
+
+         function xmlToDom(textdata) {
+           return new DOMParser().parseFromString(textdata, 'text/xml');

          }
 
          }
 

-         validation.type = type;
-         return validation;
-       }
+         drawData.setFile = function (extension, data) {
+           _template = null;
+           _fileList = null;
+           _geojson = null;
+           _src = null;
+           var gj;
+
+           switch (extension) {
+             case '.gpx':
+               gj = gpx(xmlToDom(data));
+               break;
+
+             case '.kml':
+               gj = kml(xmlToDom(data));
+               break;

 
 

-       function validationIncompatibleSource() {
-         var type = 'incompatible_source';
-         var invalidSources = [{
-           id: 'google',
-           regex: 'google',
-           exceptRegex: 'books.google|Google Books|drive.google|googledrive|Google Drive'
-         }];
+             case '.geojson':
+             case '.json':
+               gj = JSON.parse(data);
+               break;
+           }

 
 

-         var validation = function checkIncompatibleSource(entity) {
-           var entitySources = entity.tags && entity.tags.source && entity.tags.source.split(';');
-           if (!entitySources) return [];
-           var issues = [];
-           invalidSources.forEach(function (invalidSource) {
-             var hasInvalidSource = entitySources.some(function (source) {
-               if (!source.match(new RegExp(invalidSource.regex, 'i'))) return false;
-               if (invalidSource.exceptRegex && source.match(new RegExp(invalidSource.exceptRegex, 'i'))) return false;
-               return true;
-             });
-             if (!hasInvalidSource) return;
-             issues.push(new validationIssue({
-               type: type,
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.incompatible_source.' + invalidSource.id + '.feature.message', {
-                   feature: utilDisplayLabel(entity, context.graph())
-                 }) : '';
-               },
-               reference: getReference(invalidSource.id),
-               entityIds: [entity.id],
-               dynamicFixes: function dynamicFixes() {
-                 return [new validationIssueFix({
-                   title: _t.html('issues.fix.remove_proprietary_data.title')
-                 })];
-               }
-             }));
-           });
-           return issues;
+           gj = gj || {};

 
 

-           function getReference(id) {
-             return function showReference(selection) {
-               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.incompatible_source.' + id + '.reference'));
-             };
+           if (Object.keys(gj).length) {
+             _geojson = ensureIDs(gj);
+             _src = extension + ' data file';
+             this.fitZoom();

            }
            }

-         };

 
 

-         validation.type = type;
-         return validation;
-       }
+           dispatch.call('change');
+           return this;
+         };

 
 

-       function validationMaprules() {
-         var type = 'maprules';
+         drawData.showLabels = function (val) {
+           if (!arguments.length) return _showLabels;
+           _showLabels = val;
+           return this;
+         };

 
 

-         var validation = function checkMaprules(entity, graph) {
-           if (!services.maprules) return [];
-           var rules = services.maprules.validationRules();
-           var issues = [];
+         drawData.enabled = function (val) {
+           if (!arguments.length) return _enabled;
+           _enabled = val;

 
 

-           for (var i = 0; i < rules.length; i++) {
-             var rule = rules[i];
-             rule.findIssues(entity, graph, issues);
+           if (_enabled) {
+             showLayer();
+           } else {
+             hideLayer();

            }
 
            }
 

-           return issues;
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         validation.type = type;
-         return validation;
-       }
-
-       function validationMismatchedGeometry() {
-         var type = 'mismatched_geometry';
+         drawData.hasData = function () {
+           var gj = _geojson || {};
+           return !!(_template || Object.keys(gj).length);
+         };

 
 

-         function tagSuggestingLineIsArea(entity) {
-           if (entity.type !== 'way' || entity.isClosed()) return null;
-           var tagSuggestingArea = entity.tagSuggestingArea();
+         drawData.template = function (val, src) {
+           if (!arguments.length) return _template; // test source against OSM imagery blocklists..

 
 

-           if (!tagSuggestingArea) {
-             return null;
-           }
+           var osm = context.connection();

 
 

-           var asLine = _mainPresetIndex.matchTags(tagSuggestingArea, 'line');
-           var asArea = _mainPresetIndex.matchTags(tagSuggestingArea, 'area');
+           if (osm) {
+             var blocklists = osm.imageryBlocklists();
+             var fail = false;
+             var tested = 0;
+             var regex;

 
 

-           if (asLine && asArea && asLine === asArea) {
-             // these tags also allow lines and making this an area wouldn't matter
-             return null;
-           }
+             for (var i = 0; i < blocklists.length; i++) {
+               regex = blocklists[i];
+               fail = regex.test(val);
+               tested++;
+               if (fail) break;
+             } // ensure at least one test was run.

 
 

-           return tagSuggestingArea;
-         }

 
 

-         function makeConnectEndpointsFixOnClick(way, graph) {
-           // must have at least three nodes to close this automatically
-           if (way.nodes.length < 3) return null;
-           var nodes = graph.childNodes(way),
-               testNodes;
-           var firstToLastDistanceMeters = geoSphericalDistance(nodes[0].loc, nodes[nodes.length - 1].loc); // if the distance is very small, attempt to merge the endpoints
+             if (!tested) {
+               regex = /.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/;
+               fail = regex.test(val);
+             }
+           }

 
 

-           if (firstToLastDistanceMeters < 0.75) {
-             testNodes = nodes.slice(); // shallow copy
+           _template = val;
+           _fileList = null;
+           _geojson = null; // strip off the querystring/hash from the template,
+           // it often includes the access token

 
 

-             testNodes.pop();
-             testNodes.push(testNodes[0]); // make sure this will not create a self-intersection
+           _src = src || 'vectortile:' + val.split(/[?#]/)[0];
+           dispatch.call('change');
+           return this;
+         };

 
 

-             if (!geoHasSelfIntersections(testNodes, testNodes[0].id)) {
-               return function (context) {
-                 var way = context.entity(this.issue.entityIds[0]);
-                 context.perform(actionMergeNodes([way.nodes[0], way.nodes[way.nodes.length - 1]], nodes[0].loc), _t('issues.fix.connect_endpoints.annotation'));
-               };
-             }
-           } // if the points were not merged, attempt to close the way
+         drawData.geojson = function (gj, src) {
+           if (!arguments.length) return _geojson;
+           _template = null;
+           _fileList = null;
+           _geojson = null;
+           _src = null;
+           gj = gj || {};

 
 

+           if (Object.keys(gj).length) {
+             _geojson = ensureIDs(gj);
+             _src = src || 'unknown.geojson';
+           }

 
 

-           testNodes = nodes.slice(); // shallow copy
+           dispatch.call('change');
+           return this;
+         };

 
 

-           testNodes.push(testNodes[0]); // make sure this will not create a self-intersection
+         drawData.fileList = function (fileList) {
+           if (!arguments.length) return _fileList;
+           _template = null;
+           _fileList = fileList;
+           _geojson = null;
+           _src = null;
+           if (!fileList || !fileList.length) return this;
+           var f = fileList[0];
+           var extension = getExtension(f.name);
+           var reader = new FileReader();

 
 

-           if (!geoHasSelfIntersections(testNodes, testNodes[0].id)) {
-             return function (context) {
-               var wayId = this.issue.entityIds[0];
-               var way = context.entity(wayId);
-               var nodeId = way.nodes[0];
-               var index = way.nodes.length;
-               context.perform(actionAddVertex(wayId, nodeId, index), _t('issues.fix.connect_endpoints.annotation'));
+           reader.onload = function () {
+             return function (e) {
+               drawData.setFile(extension, e.target.result);

              };
              };

-           }
-         }
+           }();

 
 

-         function lineTaggedAsAreaIssue(entity) {
-           var tagSuggestingArea = tagSuggestingLineIsArea(entity);
-           if (!tagSuggestingArea) return null;
-           return new validationIssue({
-             type: type,
-             subtype: 'area_as_line',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               return entity ? _t.html('issues.tag_suggests_area.message', {
-                 feature: utilDisplayLabel(entity, 'area'),
-                 tag: utilTagText({
-                   tags: tagSuggestingArea
-                 })
-               }) : '';
-             },
-             reference: showReference,
-             entityIds: [entity.id],
-             hash: JSON.stringify(tagSuggestingArea),
-             dynamicFixes: function dynamicFixes(context) {
-               var fixes = [];
-               var entity = context.entity(this.entityIds[0]);
-               var connectEndsOnClick = makeConnectEndpointsFixOnClick(entity, context.graph());
-               fixes.push(new validationIssueFix({
-                 title: _t.html('issues.fix.connect_endpoints.title'),
-                 onClick: connectEndsOnClick
-               }));
-               fixes.push(new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.remove_tag.title'),
-                 onClick: function onClick(context) {
-                   var entityId = this.issue.entityIds[0];
-                   var entity = context.entity(entityId);
-                   var tags = Object.assign({}, entity.tags); // shallow copy
+           reader.readAsText(f);
+           return this;
+         };

 
 

-                   for (var key in tagSuggestingArea) {
-                     delete tags[key];
-                   }
+         drawData.url = function (url, defaultExtension) {
+           _template = null;
+           _fileList = null;
+           _geojson = null;
+           _src = null; // strip off any querystring/hash from the url before checking extension

 
 

-                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_tag.annotation'));
-                 }
-               }));
-               return fixes;
-             }
-           });
+           var testUrl = url.split(/[?#]/)[0];
+           var extension = getExtension(testUrl) || defaultExtension;

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.tag_suggests_area.reference'));
+           if (extension) {
+             _template = null;
+             d3_text(url).then(function (data) {
+               drawData.setFile(extension, data);
+             })["catch"](function () {
+               /* ignore */
+             });
+           } else {
+             drawData.template(url);

            }
            }

-         }
-
-         function vertexTaggedAsPointIssue(entity, graph) {
-           // we only care about nodes
-           if (entity.type !== 'node') return null; // ignore tagless points

 
 

-           if (Object.keys(entity.tags).length === 0) return null; // address lines are special so just ignore them
+           return this;
+         };

 
 

-           if (entity.isOnAddressLine(graph)) return null;
-           var geometry = entity.geometry(graph);
-           var allowedGeometries = osmNodeGeometriesForTags(entity.tags);
+         drawData.getSrc = function () {
+           return _src || '';
+         };

 
 

-           if (geometry === 'point' && !allowedGeometries.point && allowedGeometries.vertex) {
-             return new validationIssue({
-               type: type,
-               subtype: 'vertex_as_point',
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.vertex_as_point.message', {
-                   feature: utilDisplayLabel(entity, 'vertex')
-                 }) : '';
-               },
-               reference: function showReference(selection) {
-                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.vertex_as_point.reference'));
-               },
-               entityIds: [entity.id]
-             });
-           } else if (geometry === 'vertex' && !allowedGeometries.vertex && allowedGeometries.point) {
-             return new validationIssue({
-               type: type,
-               subtype: 'point_as_vertex',
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.point_as_vertex.message', {
-                   feature: utilDisplayLabel(entity, 'point')
-                 }) : '';
-               },
-               reference: function showReference(selection) {
-                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.point_as_vertex.reference'));
-               },
-               entityIds: [entity.id],
-               dynamicFixes: function dynamicFixes(context) {
-                 var entityId = this.entityIds[0];
-                 var extractOnClick = null;
-
-                 if (!context.hasHiddenConnections(entityId)) {
-                   extractOnClick = function extractOnClick(context) {
-                     var entityId = this.issue.entityIds[0];
-                     var action = actionExtract(entityId);
-                     context.perform(action, _t('operations.extract.annotation', {
-                       n: 1
-                     })); // re-enter mode to trigger updates
-
-                     context.enter(modeSelect(context, [action.getExtractedNodeID()]));
-                   };
-                 }
+         drawData.fitZoom = function () {
+           var features = getFeatures(_geojson);
+           if (!features.length) return;
+           var map = context.map();
+           var viewport = map.trimmedExtent().polygon();
+           var coords = features.reduce(function (coords, feature) {
+             var geom = feature.geometry;
+             if (!geom) return coords;
+             var c = geom.coordinates;
+             /* eslint-disable no-fallthrough */

 
 

-                 return [new validationIssueFix({
-                   icon: 'iD-operation-extract',
-                   title: _t.html('issues.fix.extract_point.title'),
-                   onClick: extractOnClick
-                 })];
-               }
-             });
-           }
+             switch (geom.type) {
+               case 'Point':
+                 c = [c];

 
 

-           return null;
-         }
+               case 'MultiPoint':
+               case 'LineString':
+                 break;

 
 

-         function unclosedMultipolygonPartIssues(entity, graph) {
-           if (entity.type !== 'relation' || !entity.isMultipolygon() || entity.isDegenerate() || // cannot determine issues for incompletely-downloaded relations
-           !entity.isComplete(graph)) return null;
-           var sequences = osmJoinWays(entity.members, graph);
-           var issues = [];
+               case 'MultiPolygon':
+                 c = utilArrayFlatten(c);

 
 

-           for (var i in sequences) {
-             var sequence = sequences[i];
-             if (!sequence.nodes) continue;
-             var firstNode = sequence.nodes[0];
-             var lastNode = sequence.nodes[sequence.nodes.length - 1]; // part is closed if the first and last nodes are the same
+               case 'Polygon':
+               case 'MultiLineString':
+                 c = utilArrayFlatten(c);
+                 break;
+             }
+             /* eslint-enable no-fallthrough */

 
 

-             if (firstNode === lastNode) continue;
-             var issue = new validationIssue({
-               type: type,
-               subtype: 'unclosed_multipolygon_part',
-               severity: 'warning',
-               message: function message(context) {
-                 var entity = context.hasEntity(this.entityIds[0]);
-                 return entity ? _t.html('issues.unclosed_multipolygon_part.message', {
-                   feature: utilDisplayLabel(entity, context.graph())
-                 }) : '';
-               },
-               reference: showReference,
-               loc: sequence.nodes[0].loc,
-               entityIds: [entity.id],
-               hash: sequence.map(function (way) {
-                 return way.id;
-               }).join()
-             });
-             issues.push(issue);
-           }

 
 

-           return issues;
+             return utilArrayUnion(coords, c);
+           }, []);

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unclosed_multipolygon_part.reference'));
+           if (!geoPolygonIntersectsPolygon(viewport, coords, true)) {
+             var extent = geoExtent(d3_geoBounds({
+               type: 'LineString',
+               coordinates: coords
+             }));
+             map.centerZoom(extent.center(), map.trimmedExtentZoom(extent));

            }
            }

-         }

 
 

-         var validation = function checkMismatchedGeometry(entity, graph) {
-           var issues = [vertexTaggedAsPointIssue(entity, graph), lineTaggedAsAreaIssue(entity)];
-           issues = issues.concat(unclosedMultipolygonPartIssues(entity, graph));
-           return issues.filter(Boolean);
+           return this;

          };
 
          };
 

-         validation.type = type;
-         return validation;
+         init();
+         return drawData;

        }
 
        }
 

-       function validationMissingRole() {
-         var type = 'missing_role';
-
-         var validation = function checkMissingRole(entity, graph) {
-           var issues = [];
+       function svgDebug(projection, context) {
+         function drawDebug(selection) {
+           var showTile = context.getDebug('tile');
+           var showCollision = context.getDebug('collision');
+           var showImagery = context.getDebug('imagery');
+           var showTouchTargets = context.getDebug('target');
+           var showDownloaded = context.getDebug('downloaded');
+           var debugData = [];

 
 

-           if (entity.type === 'way') {
-             graph.parentRelations(entity).forEach(function (relation) {
-               if (!relation.isMultipolygon()) return;
-               var member = relation.memberById(entity.id);
+           if (showTile) {
+             debugData.push({
+               "class": 'red',
+               label: 'tile'
+             });
+           }

 
 

-               if (member && isMissingRole(member)) {
-                 issues.push(makeIssue(entity, relation, member));
-               }
+           if (showCollision) {
+             debugData.push({
+               "class": 'yellow',
+               label: 'collision'

              });
              });

-           } else if (entity.type === 'relation' && entity.isMultipolygon()) {
-             entity.indexedMembers().forEach(function (member) {
-               var way = graph.hasEntity(member.id);
+           }

 
 

-               if (way && isMissingRole(member)) {
-                 issues.push(makeIssue(way, entity, member));
-               }
+           if (showImagery) {
+             debugData.push({
+               "class": 'orange',
+               label: 'imagery'

              });
            }
 
              });
            }
 

-           return issues;
-         };
+           if (showTouchTargets) {
+             debugData.push({
+               "class": 'pink',
+               label: 'touchTargets'
+             });
+           }

 
 

-         function isMissingRole(member) {
-           return !member.role || !member.role.trim().length;
-         }
+           if (showDownloaded) {
+             debugData.push({
+               "class": 'purple',
+               label: 'downloaded'
+             });
+           }

 
 

-         function makeIssue(way, relation, member) {
-           return new validationIssue({
-             type: type,
-             severity: 'warning',
-             message: function message(context) {
-               var member = context.hasEntity(this.entityIds[1]),
-                   relation = context.hasEntity(this.entityIds[0]);
-               return member && relation ? _t.html('issues.missing_role.message', {
-                 member: utilDisplayLabel(member, context.graph()),
-                 relation: utilDisplayLabel(relation, context.graph())
-               }) : '';
-             },
-             reference: showReference,
-             entityIds: [relation.id, way.id],
-             data: {
-               member: member
-             },
-             hash: member.index.toString(),
-             dynamicFixes: function dynamicFixes() {
-               return [makeAddRoleFix('inner'), makeAddRoleFix('outer'), new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.remove_from_relation.title'),
-                 onClick: function onClick(context) {
-                   context.perform(actionDeleteMember(this.issue.entityIds[0], this.issue.data.member.index), _t('operations.delete_member.annotation', {
-                     n: 1
-                   }));
-                 }
-               })];
-             }
+           var legend = context.container().select('.main-content').selectAll('.debug-legend').data(debugData.length ? [0] : []);
+           legend.exit().remove();
+           legend = legend.enter().append('div').attr('class', 'fillD debug-legend').merge(legend);
+           var legendItems = legend.selectAll('.debug-legend-item').data(debugData, function (d) {
+             return d.label;
+           });
+           legendItems.exit().remove();
+           legendItems.enter().append('span').attr('class', function (d) {
+             return "debug-legend-item ".concat(d["class"]);
+           }).text(function (d) {
+             return d.label;

            });
            });

+           var layer = selection.selectAll('.layer-debug').data(showImagery || showDownloaded ? [0] : []);
+           layer.exit().remove();
+           layer = layer.enter().append('g').attr('class', 'layer-debug').merge(layer); // imagery

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.missing_role.multipolygon.reference'));
-           }
-         }
+           var extent = context.map().extent();
+           _mainFileFetcher.get('imagery').then(function (d) {
+             var hits = showImagery && d.query.bbox(extent.rectangle(), true) || [];
+             var features = hits.map(function (d) {
+               return d.features[d.id];
+             });
+             var imagery = layer.selectAll('path.debug-imagery').data(features);
+             imagery.exit().remove();
+             imagery.enter().append('path').attr('class', 'debug-imagery debug orange');
+           })["catch"](function () {
+             /* ignore */
+           }); // downloaded

 
 

-         function makeAddRoleFix(role) {
-           return new validationIssueFix({
-             title: _t.html('issues.fix.set_as_' + role + '.title'),
-             onClick: function onClick(context) {
-               var oldMember = this.issue.data.member;
-               var member = {
-                 id: this.issue.entityIds[1],
-                 type: oldMember.type,
-                 role: role
-               };
-               context.perform(actionChangeMember(this.issue.entityIds[0], member, oldMember.index), _t('operations.change_role.annotation', {
-                 n: 1
-               }));
-             }
-           });
-         }
+           var osm = context.connection();
+           var dataDownloaded = [];
+
+           if (osm && showDownloaded) {
+             var rtree = osm.caches('get').tile.rtree;
+             dataDownloaded = rtree.all().map(function (bbox) {
+               return {
+                 type: 'Feature',
+                 properties: {
+                   id: bbox.id
+                 },
+                 geometry: {
+                   type: 'Polygon',
+                   coordinates: [[[bbox.minX, bbox.minY], [bbox.minX, bbox.maxY], [bbox.maxX, bbox.maxY], [bbox.maxX, bbox.minY], [bbox.minX, bbox.minY]]]
+                 }
+               };
+             });
+           }

 
 

-         validation.type = type;
-         return validation;
-       }
+           var downloaded = layer.selectAll('path.debug-downloaded').data(showDownloaded ? dataDownloaded : []);
+           downloaded.exit().remove();
+           downloaded.enter().append('path').attr('class', 'debug-downloaded debug purple'); // update

 
 

-       function validationMissingTag(context) {
-         var type = 'missing_tag';
+           layer.selectAll('path').attr('d', svgPath(projection).geojson);
+         } // This looks strange because `enabled` methods on other layers are
+         // chainable getter/setters, and this one is just a getter.

 
 

-         function hasDescriptiveTags(entity, graph) {
-           var keys = Object.keys(entity.tags).filter(function (k) {
-             if (k === 'area' || k === 'name') {
-               return false;
-             } else {
-               return osmIsInterestingTag(k);
-             }
-           });

 
 

-           if (entity.type === 'relation' && keys.length === 1 && entity.tags.type === 'multipolygon') {
-             // this relation's only interesting tag just says its a multipolygon,
-             // which is not descriptive enough
-             // It's okay for a simple multipolygon to have no descriptive tags
-             // if its outer way has them (old model, see `outdated_tags.js`)
-             return osmOldMultipolygonOuterMemberOfRelation(entity, graph);
+         drawDebug.enabled = function () {
+           if (!arguments.length) {
+             return context.getDebug('tile') || context.getDebug('collision') || context.getDebug('imagery') || context.getDebug('target') || context.getDebug('downloaded');
+           } else {
+             return this;

            }
            }

+         };

 
 

-           return keys.length > 0;
-         }
+         return drawDebug;
+       }

 
 

-         function isUnknownRoad(entity) {
-           return entity.type === 'way' && entity.tags.highway === 'road';
-         }
+       /*
+           A standalone SVG element that contains only a `defs` sub-element. To be
+           used once globally, since defs IDs must be unique within a document.
+       */

 
 

-         function isUntypedRelation(entity) {
-           return entity.type === 'relation' && !entity.tags.type;
-         }
+       function svgDefs(context) {
+         var _defsSelection = select(null);

 
 

-         var validation = function checkMissingTag(entity, graph) {
-           var subtype;
-           var osm = context.connection();
-           var isUnloadedNode = entity.type === 'node' && osm && !osm.isDataLoaded(entity.loc); // we can't know if the node is a vertex if the tile is undownloaded
+         var _spritesheetIds = ['iD-sprite', 'maki-sprite', 'temaki-sprite', 'fa-sprite', 'community-sprite'];

 
 

-           if (!isUnloadedNode && // allow untagged nodes that are part of ways
-           entity.geometry(graph) !== 'vertex' && // allow untagged entities that are part of relations
-           !entity.hasParentRelations(graph)) {
-             if (Object.keys(entity.tags).length === 0) {
-               subtype = 'any';
-             } else if (!hasDescriptiveTags(entity, graph)) {
-               subtype = 'descriptive';
-             } else if (isUntypedRelation(entity)) {
-               subtype = 'relation_type';
-             }
-           } // flag an unknown road even if it's a member of a relation
+         function drawDefs(selection) {
+           _defsSelection = selection.append('defs'); // add markers
+
+           _defsSelection.append('marker').attr('id', 'ideditor-oneway-marker').attr('viewBox', '0 0 10 5').attr('refX', 2.5).attr('refY', 2.5).attr('markerWidth', 2).attr('markerHeight', 2).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'oneway-marker-path').attr('d', 'M 5,3 L 0,3 L 0,2 L 5,2 L 5,0 L 10,2.5 L 5,5 z').attr('stroke', 'none').attr('fill', '#000').attr('opacity', '0.75'); // SVG markers have to be given a colour where they're defined
+           // (they can't inherit it from the line they're attached to),
+           // so we need to manually define markers for each color of tag
+           // (also, it's slightly nicer if we can control the
+           // positioning for different tags)

 
 
 
 

-           if (!subtype && isUnknownRoad(entity)) {
-             subtype = 'highway_classification';
+           function addSidedMarker(name, color, offset) {
+             _defsSelection.append('marker').attr('id', 'ideditor-sided-marker-' + name).attr('viewBox', '0 0 2 2').attr('refX', 1).attr('refY', -offset).attr('markerWidth', 1.5).attr('markerHeight', 1.5).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'sided-marker-path sided-marker-' + name + '-path').attr('d', 'M 0,0 L 1,1 L 2,0 z').attr('stroke', 'none').attr('fill', color);

            }
 
            }
 

-           if (!subtype) return [];
-           var messageID = subtype === 'highway_classification' ? 'unknown_road' : 'missing_tag.' + subtype;
-           var referenceID = subtype === 'highway_classification' ? 'unknown_road' : 'missing_tag'; // can always delete if the user created it in the first place..
+           addSidedMarker('natural', 'rgb(170, 170, 170)', 0); // for a coastline, the arrows are (somewhat unintuitively) on
+           // the water side, so let's color them blue (with a gap) to
+           // give a stronger indication

 
 

-           var canDelete = entity.version === undefined || entity.v !== undefined;
-           var severity = canDelete && subtype !== 'highway_classification' ? 'error' : 'warning';
-           return [new validationIssue({
-             type: type,
-             subtype: subtype,
-             severity: severity,
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               return entity ? _t.html('issues.' + messageID + '.message', {
-                 feature: utilDisplayLabel(entity, context.graph())
-               }) : '';
-             },
-             reference: showReference,
-             entityIds: [entity.id],
-             dynamicFixes: function dynamicFixes(context) {
-               var fixes = [];
-               var selectFixType = subtype === 'highway_classification' ? 'select_road_type' : 'select_preset';
-               fixes.push(new validationIssueFix({
-                 icon: 'iD-icon-search',
-                 title: _t.html('issues.fix.' + selectFixType + '.title'),
-                 onClick: function onClick(context) {
-                   context.ui().sidebar.showPresetList();
-                 }
-               }));
-               var deleteOnClick;
-               var id = this.entityIds[0];
-               var operation = operationDelete(context, [id]);
-               var disabledReasonID = operation.disabled();
+           addSidedMarker('coastline', '#77dede', 1);
+           addSidedMarker('waterway', '#77dede', 1); // barriers have a dashed line, and separating the triangle
+           // from the line visually suits that

 
 

-               if (!disabledReasonID) {
-                 deleteOnClick = function deleteOnClick(context) {
-                   var id = this.issue.entityIds[0];
-                   var operation = operationDelete(context, [id]);
+           addSidedMarker('barrier', '#ddd', 1);
+           addSidedMarker('man_made', '#fff', 0);

 
 

-                   if (!operation.disabled()) {
-                     operation();
-                   }
-                 };
-               }
+           _defsSelection.append('marker').attr('id', 'ideditor-viewfield-marker').attr('viewBox', '0 0 16 16').attr('refX', 8).attr('refY', 16).attr('markerWidth', 4).attr('markerHeight', 4).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'viewfield-marker-path').attr('d', 'M 6,14 C 8,13.4 8,13.4 10,14 L 16,3 C 12,0 4,0 0,3 z').attr('fill', '#333').attr('fill-opacity', '0.75').attr('stroke', '#fff').attr('stroke-width', '0.5px').attr('stroke-opacity', '0.75');

 
 

-               fixes.push(new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.delete_feature.title'),
-                 disabledReason: disabledReasonID ? _t('operations.delete.' + disabledReasonID + '.single') : undefined,
-                 onClick: deleteOnClick
-               }));
-               return fixes;
-             }
-           })];
+           _defsSelection.append('marker').attr('id', 'ideditor-viewfield-marker-wireframe').attr('viewBox', '0 0 16 16').attr('refX', 8).attr('refY', 16).attr('markerWidth', 4).attr('markerHeight', 4).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'viewfield-marker-path').attr('d', 'M 6,14 C 8,13.4 8,13.4 10,14 L 16,3 C 12,0 4,0 0,3 z').attr('fill', 'none').attr('stroke', '#fff').attr('stroke-width', '0.5px').attr('stroke-opacity', '0.75'); // add patterns

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.' + referenceID + '.reference'));
-           }
-         };

 
 

-         validation.type = type;
-         return validation;
-       }
+           var patterns = _defsSelection.selectAll('pattern').data([// pattern name, pattern image name
+           ['beach', 'dots'], ['construction', 'construction'], ['cemetery', 'cemetery'], ['cemetery_christian', 'cemetery_christian'], ['cemetery_buddhist', 'cemetery_buddhist'], ['cemetery_muslim', 'cemetery_muslim'], ['cemetery_jewish', 'cemetery_jewish'], ['farmland', 'farmland'], ['farmyard', 'farmyard'], ['forest', 'forest'], ['forest_broadleaved', 'forest_broadleaved'], ['forest_needleleaved', 'forest_needleleaved'], ['forest_leafless', 'forest_leafless'], ['golf_green', 'grass'], ['grass', 'grass'], ['landfill', 'landfill'], ['meadow', 'grass'], ['orchard', 'orchard'], ['pond', 'pond'], ['quarry', 'quarry'], ['scrub', 'bushes'], ['vineyard', 'vineyard'], ['water_standing', 'lines'], ['waves', 'waves'], ['wetland', 'wetland'], ['wetland_marsh', 'wetland_marsh'], ['wetland_swamp', 'wetland_swamp'], ['wetland_bog', 'wetland_bog'], ['wetland_reedbed', 'wetland_reedbed']]).enter().append('pattern').attr('id', function (d) {
+             return 'ideditor-pattern-' + d[0];
+           }).attr('width', 32).attr('height', 32).attr('patternUnits', 'userSpaceOnUse');

 
 

-       var simplify = function simplify(str) {
-         return diacritics.remove(str.replace(/&/g, 'and').replace(/[\s\-=_!"#%'*{},.\/:;?\(\)\[\]@\\$\^*+<>~`’\u00a1\u00a7\u00b6\u00b7\u00bf\u037e\u0387\u055a-\u055f\u0589\u05c0\u05c3\u05c6\u05f3\u05f4\u0609\u060a\u060c\u060d\u061b\u061e\u061f\u066a-\u066d\u06d4\u0700-\u070d\u07f7-\u07f9\u0830-\u083e\u085e\u0964\u0965\u0970\u0af0\u0df4\u0e4f\u0e5a\u0e5b\u0f04-\u0f12\u0f14\u0f85\u0fd0-\u0fd4\u0fd9\u0fda\u104a-\u104f\u10fb\u1360-\u1368\u166d\u166e\u16eb-\u16ed\u1735\u1736\u17d4-\u17d6\u17d8-\u17da\u1800-\u1805\u1807-\u180a\u1944\u1945\u1a1e\u1a1f\u1aa0-\u1aa6\u1aa8-\u1aad\u1b5a-\u1b60\u1bfc-\u1bff\u1c3b-\u1c3f\u1c7e\u1c7f\u1cc0-\u1cc7\u1cd3\u2016\u2017\u2020-\u2027\u2030-\u2038\u203b-\u203e\u2041-\u2043\u2047-\u2051\u2053\u2055-\u205e\u2cf9-\u2cfc\u2cfe\u2cff\u2d70\u2e00\u2e01\u2e06-\u2e08\u2e0b\u2e0e-\u2e16\u2e18\u2e19\u2e1b\u2e1e\u2e1f\u2e2a-\u2e2e\u2e30-\u2e39\u3001-\u3003\u303d\u30fb\ua4fe\ua4ff\ua60d-\ua60f\ua673\ua67e\ua6f2-\ua6f7\ua874-\ua877\ua8ce\ua8cf\ua8f8-\ua8fa\ua92e\ua92f\ua95f\ua9c1-\ua9cd\ua9de\ua9df\uaa5c-\uaa5f\uaade\uaadf\uaaf0\uaaf1\uabeb\ufe10-\ufe16\ufe19\ufe30\ufe45\ufe46\ufe49-\ufe4c\ufe50-\ufe52\ufe54-\ufe57\ufe5f-\ufe61\ufe68\ufe6a\ufe6b\uff01-\uff03\uff05-\uff07\uff0a\uff0c\uff0e\uff0f\uff1a\uff1b\uff1f\uff20\uff3c\uff61\uff64\uff65]+/g, '').toLowerCase());
-       };
+           patterns.append('rect').attr('x', 0).attr('y', 0).attr('width', 32).attr('height', 32).attr('class', function (d) {
+             return 'pattern-color-' + d[0];
+           });
+           patterns.append('image').attr('x', 0).attr('y', 0).attr('width', 32).attr('height', 32).attr('xlink:href', function (d) {
+             return context.imagePath('pattern/' + d[1] + '.png');
+           }); // add clip paths

 
 

-       // {
-       //   kvnd:        "amenity/fast_food|Thaï Express~(North America)",
-       //   kvn:         "amenity/fast_food|Thaï Express",
-       //   kv:          "amenity/fast_food",
-       //   k:           "amenity",
-       //   v:           "fast_food",
-       //   n:           "Thaï Express",
-       //   d:           "(North America)",
-       //   nsimple:     "thaiexpress",
-       //   kvnnsimple:  "amenity/fast_food|thaiexpress"
-       // }
+           _defsSelection.selectAll('clipPath').data([12, 18, 20, 32, 45]).enter().append('clipPath').attr('id', function (d) {
+             return 'ideditor-clip-square-' + d;
+           }).append('rect').attr('x', 0).attr('y', 0).attr('width', function (d) {
+             return d;
+           }).attr('height', function (d) {
+             return d;
+           }); // add symbol spritesheets

 
 

-       var to_parts = function to_parts(kvnd) {
-         var parts = {};
-         parts.kvnd = kvnd;
-         var kvndparts = kvnd.split('~', 2);
-         if (kvndparts.length > 1) parts.d = kvndparts[1];
-         parts.kvn = kvndparts[0];
-         var kvnparts = parts.kvn.split('|', 2);
-         if (kvnparts.length > 1) parts.n = kvnparts[1];
-         parts.kv = kvnparts[0];
-         var kvparts = parts.kv.split('/', 2);
-         parts.k = kvparts[0];
-         parts.v = kvparts[1];
-         parts.nsimple = simplify(parts.n);
-         parts.kvnsimple = parts.kv + '|' + parts.nsimple;
-         return parts;
-       };

 
 

-       var matchGroups = {adult_gaming_centre:["amenity/casino","amenity/gambling","leisure/adult_gaming_centre"],beauty:["shop/beauty","shop/hairdresser_supply"],bed:["shop/bed","shop/furniture"],beverages:["shop/alcohol","shop/beverages"],camping:["leisure/park","tourism/camp_site","tourism/caravan_site"],car_parts:["shop/car_parts","shop/car_repair","shop/tires","shop/tyres"],confectionery:["shop/candy","shop/chocolate","shop/confectionery"],convenience:["shop/beauty","shop/chemist","shop/convenience","shop/cosmetics","shop/newsagent"],coworking:["amenity/coworking_space","office/coworking","office/coworking_space"],electronics:["office/telecommunication","shop/computer","shop/electronics","shop/hifi","shop/mobile","shop/mobile_phone","shop/telecommunication"],fashion:["shop/accessories","shop/bag","shop/botique","shop/clothes","shop/department_store","shop/fashion","shop/fashion_accessories","shop/sports","shop/shoes"],financial:["amenity/bank","office/accountant","office/financial","office/financial_advisor","office/tax_advisor","shop/tax"],fitness:["leisure/fitness_centre","leisure/fitness_center","leisure/sports_centre","leisure/sports_center"],food:["amenity/cafe","amenity/fast_food","amenity/ice_cream","amenity/restaurant","shop/bakery","shop/ice_cream","shop/pastry","shop/tea","shop/coffee"],fuel:["amenity/fuel","shop/gas","shop/convenience;gas","shop/gas;convenience"],gift:["shop/gift","shop/card","shop/cards","shop/stationery"],hardware:["shop/carpet","shop/diy","shop/doityourself","shop/doors","shop/electrical","shop/flooring","shop/hardware","shop/power_tools","shop/tool_hire","shop/tools","shop/trade"],health_food:["shop/health","shop/health_food","shop/herbalist","shop/nutrition_supplements"],houseware:["shop/houseware","shop/interior_decoration"],lodging:["tourism/hotel","tourism/motel"],money_transfer:["amenity/money_transfer","shop/money_transfer"],outdoor:["shop/outdoor","shop/sports"],rental:["amenity/bicycle_rental","amenity/boat_rental","amenity/car_rental","amenity/truck_rental","amenity/vehicle_rental","shop/rental"],school:["amenity/childcare","amenity/college","amenity/kindergarten","amenity/language_school","amenity/prep_school","amenity/school","amenity/university"],supermarket:["shop/food","shop/frozen_food","shop/greengrocer","shop/grocery","shop/supermarket","shop/wholesale"],variety_store:["shop/variety_store","shop/supermarket","shop/discount","shop/convenience"],vending:["amenity/vending_machine","shop/vending_machine"],wholesale:["shop/wholesale","shop/supermarket","shop/department_store"]};
-       var require$$0 = {
-       matchGroups: matchGroups
-       };
+           addSprites(_spritesheetIds, true);
+         }

 
 

-       var matchGroups$1 = require$$0.matchGroups;
+         function addSprites(ids, overrideColors) {
+           _spritesheetIds = utilArrayUniq(_spritesheetIds.concat(ids));

 
 

-       var matcher$1 = function matcher() {
-         var _warnings = []; // array of match conflict pairs
+           var spritesheets = _defsSelection.selectAll('.spritesheet').data(_spritesheetIds);

 
 

-         var _ambiguous = {};
-         var _matchIndex = {};
-         var matcher = {}; // Create an index of all the keys/simplenames for fast matching
+           spritesheets.enter().append('g').attr('class', function (d) {
+             return 'spritesheet spritesheet-' + d;
+           }).each(function (d) {
+             var url = context.imagePath(d + '.svg');
+             var node = select(this).node();
+             svg(url).then(function (svg) {
+               node.appendChild(select(svg.documentElement).attr('id', 'ideditor-' + d).node());

 
 

-         matcher.buildMatchIndex = function (brands) {
-           // two passes - once for primary names, once for secondary/alternate names
-           Object.keys(brands).forEach(function (kvnd) {
-             return insertNames(kvnd, 'primary');
-           });
-           Object.keys(brands).forEach(function (kvnd) {
-             return insertNames(kvnd, 'secondary');
+               if (overrideColors && d !== 'iD-sprite') {
+                 // allow icon colors to be overridden..
+                 select(node).selectAll('path').attr('fill', 'currentColor');
+               }
+             })["catch"](function () {
+               /* ignore */
+             });

            });
            });

+           spritesheets.exit().remove();
+         }

 
 

-           function insertNames(kvnd, which) {
-             var obj = brands[kvnd];
-             var parts = to_parts(kvnd); // Exit early for ambiguous names in the second pass.
-             // They were collected in the first pass and we don't gather alt names for them.
+         drawDefs.addSprites = addSprites;
+         return drawDefs;
+       }

 
 

-             if (which === 'secondary' && parts.d) return;
+       var _layerEnabled$2 = false;

 
 

-             if (obj.countryCodes) {
-               parts.countryCodes = obj.countryCodes.slice(); // copy
-             }
+       var _qaService$2;

 
 

-             var nomatches = obj.nomatch || [];
+       function svgKeepRight(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           return dispatch.call('change');
+         }, 1000);

 
 

-             if (nomatches.some(function (s) {
-               return s === kvnd;
-             })) {
-               console.log("WARNING match/nomatch conflict for ".concat(kvnd));
-               return;
-             }
+         var minZoom = 12;
+         var touchLayer = select(null);
+         var drawLayer = select(null);
+         var layerVisible = false;

 
 

-             var match_kv = [parts.kv].concat(obj.matchTags || []).concat(["".concat(parts.k, "/yes"), "building/yes"]) // #3454 - match some generic tags
-             .map(function (s) {
-               return s.toLowerCase();
-             });
-             var match_nsimple = [];
+         function markerPath(selection, klass) {
+           selection.attr('class', klass).attr('transform', 'translate(-4, -24)').attr('d', 'M11.6,6.2H7.1l1.4-5.1C8.6,0.6,8.1,0,7.5,0H2.2C1.7,0,1.3,0.3,1.3,0.8L0,10.2c-0.1,0.6,0.4,1.1,0.9,1.1h4.6l-1.8,7.6C3.6,19.4,4.1,20,4.7,20c0.3,0,0.6-0.2,0.8-0.5l6.9-11.9C12.7,7,12.3,6.2,11.6,6.2z');
+         } // Loosely-coupled keepRight service for fetching issues.

 
 

-             if (which === 'primary') {
-               match_nsimple = [parts.n].concat(obj.matchNames || []).concat(obj.tags.official_name || []) // #2732 - match alternate names
-               .map(simplify);
-             } else if (which === 'secondary') {
-               match_nsimple = [].concat(obj.tags.alt_name || []) // #2732 - match alternate names
-               .concat(obj.tags.short_name || []) // #2732 - match alternate names
-               .map(simplify);
-             }

 
 

-             if (!match_nsimple.length) return; // nothing to do
+         function getService() {
+           if (services.keepRight && !_qaService$2) {
+             _qaService$2 = services.keepRight;

 
 

-             match_kv.forEach(function (kv) {
-               match_nsimple.forEach(function (nsimple) {
-                 if (parts.d) {
-                   // Known ambiguous names with disambiguation string ~(USA) / ~(Canada)
-                   // FIXME: Name collisions will overwrite the initial entry (ok for now)
-                   if (!_ambiguous[kv]) _ambiguous[kv] = {};
-                   _ambiguous[kv][nsimple] = parts;
-                 } else {
-                   // Names we mostly expect to be unique..
-                   if (!_matchIndex[kv]) _matchIndex[kv] = {};
-                   var m = _matchIndex[kv][nsimple];
-
-                   if (m) {
-                     // There already is a match for this name, skip it
-                     // Warn if we detect collisions in a primary name.
-                     // Skip warning if a secondary name or a generic `*=yes` tag - #2972 / #3454
-                     if (which === 'primary' && !/\/yes$/.test(kv)) {
-                       _warnings.push([m.kvnd, "".concat(kvnd, " (").concat(kv, "/").concat(nsimple, ")")]);
-                     }
-                   } else {
-                     _matchIndex[kv][nsimple] = parts; // insert
-                   }
-                 }
-               });
-             });
+             _qaService$2.on('loaded', throttledRedraw);
+           } else if (!services.keepRight && _qaService$2) {
+             _qaService$2 = null;

            }
            }

-         }; // pass a `key`, `value`, `name` and return the best match,
-         // `countryCode` optional (if supplied, must match that too)

 
 

+           return _qaService$2;
+         } // Show the markers

 
 

-         matcher.matchKVN = function (key, value, name, countryCode) {
-           return matcher.matchParts(to_parts("".concat(key, "/").concat(value, "|").concat(name)), countryCode);
-         }; // pass a parts object and return the best match,
-         // `countryCode` optional (if supplied, must match that too)

 
 

+         function editOn() {
+           if (!layerVisible) {
+             layerVisible = true;
+             drawLayer.style('display', 'block');
+           }
+         } // Immediately remove the markers and their touch targets

 
 

-         matcher.matchParts = function (parts, countryCode) {
-           var match = null;
-           var inGroup = false; // fixme: we currently return a single match for ambiguous

 
 

-           match = _ambiguous[parts.kv] && _ambiguous[parts.kv][parts.nsimple];
-           if (match && matchesCountryCode(match)) return match; // try to return an exact match
+         function editOff() {
+           if (layerVisible) {
+             layerVisible = false;
+             drawLayer.style('display', 'none');
+             drawLayer.selectAll('.qaItem.keepRight').remove();
+             touchLayer.selectAll('.qaItem.keepRight').remove();
+           }
+         } // Enable the layer.  This shows the markers and transitions them to visible.

 
 

-           match = _matchIndex[parts.kv] && _matchIndex[parts.kv][parts.nsimple];
-           if (match && matchesCountryCode(match)) return match; // look in match groups

 
 

-           for (var mg in matchGroups$1) {
-             var matchGroup = matchGroups$1[mg];
-             match = null;
-             inGroup = false;
+         function layerOn() {
+           editOn();
+           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
+             return dispatch.call('change');
+           });
+         } // Disable the layer.  This transitions the layer invisible and then hides the markers.

 
 

-             for (var i = 0; i < matchGroup.length; i++) {
-               var otherkv = matchGroup[i].toLowerCase();

 
 

-               if (!inGroup) {
-                 inGroup = otherkv === parts.kv;
-               }
+         function layerOff() {
+           throttledRedraw.cancel();
+           drawLayer.interrupt();
+           touchLayer.selectAll('.qaItem.keepRight').remove();
+           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
+             editOff();
+             dispatch.call('change');
+           });
+         } // Update the issue markers

 
 

-               if (!match) {
-                 // fixme: we currently return a single match for ambiguous
-                 match = _ambiguous[otherkv] && _ambiguous[otherkv][parts.nsimple];
-               }

 
 

-               if (!match) {
-                 match = _matchIndex[otherkv] && _matchIndex[otherkv][parts.nsimple];
-               }
+         function updateMarkers() {
+           if (!layerVisible || !_layerEnabled$2) return;
+           var service = getService();
+           var selectedID = context.selectedErrorID();
+           var data = service ? service.getItems(projection) : [];
+           var getTransform = svgPointTransform(projection); // Draw markers..

 
 

-               if (match && !matchesCountryCode(match)) {
-                 match = null;
-               }
+           var markers = drawLayer.selectAll('.qaItem.keepRight').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-               if (inGroup && match) {
-                 return match;
-               }
+           markers.exit().remove(); // enter
+
+           var markersEnter = markers.enter().append('g').attr('class', function (d) {
+             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.parentIssueType);
+           });
+           markersEnter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
+           markersEnter.append('path').call(markerPath, 'shadow');
+           markersEnter.append('use').attr('class', 'qaItem-fill').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').attr('xlink:href', '#iD-icon-bolt'); // update
+
+           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
+             return d.id === selectedID;
+           }).attr('transform', getTransform); // Draw targets..
+
+           if (touchLayer.empty()) return;
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var targets = touchLayer.selectAll('.qaItem.keepRight').data(data, function (d) {
+             return d.id;
+           }); // exit
+
+           targets.exit().remove(); // enter/update
+
+           targets.enter().append('rect').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').merge(targets).sort(sortY).attr('class', function (d) {
+             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
+           }).attr('transform', getTransform);
+
+           function sortY(a, b) {
+             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : a.severity === 'error' && b.severity !== 'error' ? 1 : b.severity === 'error' && a.severity !== 'error' ? -1 : b.loc[1] - a.loc[1];
+           }
+         } // Draw the keepRight layer and schedule loading issues and updating markers.
+
+
+         function drawKeepRight(selection) {
+           var service = getService();
+           var surface = context.surface();
+
+           if (surface && !surface.empty()) {
+             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
+           }
+
+           drawLayer = selection.selectAll('.layer-keepRight').data(service ? [0] : []);
+           drawLayer.exit().remove();
+           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-keepRight').style('display', _layerEnabled$2 ? 'block' : 'none').merge(drawLayer);
+
+           if (_layerEnabled$2) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               service.loadIssues(projection);
+               updateMarkers();
+             } else {
+               editOff();

              }
            }
              }
            }

+         } // Toggles the layer on and off

 
 

-           return null;

 
 

-           function matchesCountryCode(match) {
-             if (!countryCode) return true;
-             if (!match.countryCodes) return true;
-             return match.countryCodes.indexOf(countryCode) !== -1;
+         drawKeepRight.enabled = function (val) {
+           if (!arguments.length) return _layerEnabled$2;
+           _layerEnabled$2 = val;
+
+           if (_layerEnabled$2) {
+             layerOn();
+           } else {
+             layerOff();
+
+             if (context.selectedErrorID()) {
+               context.enter(modeBrowse(context));
+             }

            }
            }

+
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         matcher.getWarnings = function () {
-           return _warnings;
+         drawKeepRight.supported = function () {
+           return !!getService();

          };
 
          };
 

-         return matcher;
-       };
+         return drawKeepRight;
+       }

 
 

-       var fromCharCode = String.fromCharCode;
-       var nativeFromCodePoint = String.fromCodePoint;
+       function svgGeolocate(projection) {
+         var layer = select(null);

 
 

-       // length should be 1, old FF problem
-       var INCORRECT_LENGTH = !!nativeFromCodePoint && nativeFromCodePoint.length != 1;
+         var _position;

 
 

-       // `String.fromCodePoint` method
-       // https://tc39.github.io/ecma262/#sec-string.fromcodepoint
-       _export({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
-         fromCodePoint: function fromCodePoint(x) { // eslint-disable-line no-unused-vars
-           var elements = [];
-           var length = arguments.length;
-           var i = 0;
-           var code;
-           while (length > i) {
-             code = +arguments[i++];
-             if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError(code + ' is not a valid code point');
-             elements.push(code < 0x10000
-               ? fromCharCode(code)
-               : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00)
-             );
-           } return elements.join('');
+         function init() {
+           if (svgGeolocate.initialized) return; // run once
+
+           svgGeolocate.enabled = false;
+           svgGeolocate.initialized = true;

          }
          }

-       });

 
 

-       var quickselect$2 = createCommonjsModule(function (module, exports) {
-         (function (global, factory) {
-            module.exports = factory() ;
-         })(commonjsGlobal, function () {
+         function showLayer() {
+           layer.style('display', 'block');
+         }

 
 

-           function quickselect(arr, k, left, right, compare) {
-             quickselectStep(arr, k, left || 0, right || arr.length - 1, compare || defaultCompare);
-           }
+         function hideLayer() {
+           layer.transition().duration(250).style('opacity', 0);
+         }

 
 

-           function quickselectStep(arr, k, left, right, compare) {
-             while (right > left) {
-               if (right - left > 600) {
-                 var n = right - left + 1;
-                 var m = k - left + 1;
-                 var z = Math.log(n);
-                 var s = 0.5 * Math.exp(2 * z / 3);
-                 var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
-                 var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
-                 var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
-                 quickselectStep(arr, k, newLeft, newRight, compare);
-               }
+         function layerOn() {
+           layer.style('opacity', 0).transition().duration(250).style('opacity', 1);
+         }

 
 

-               var t = arr[k];
-               var i = left;
-               var j = right;
-               swap(arr, left, k);
-               if (compare(arr[right], t) > 0) swap(arr, left, right);
+         function layerOff() {
+           layer.style('display', 'none');
+         }

 
 

-               while (i < j) {
-                 swap(arr, i, j);
-                 i++;
-                 j--;
+         function transform(d) {
+           return svgPointTransform(projection)(d);
+         }

 
 

-                 while (compare(arr[i], t) < 0) {
-                   i++;
-                 }
+         function accuracy(accuracy, loc) {
+           // converts accuracy to pixels...
+           var degreesRadius = geoMetersToLat(accuracy),
+               tangentLoc = [loc[0], loc[1] + degreesRadius],
+               projectedTangent = projection(tangentLoc),
+               projectedLoc = projection([loc[0], loc[1]]); // southern most point will have higher pixel value...

 
 

-                 while (compare(arr[j], t) > 0) {
-                   j--;
-                 }
-               }
+           return Math.round(projectedLoc[1] - projectedTangent[1]).toString();
+         }

 
 

-               if (compare(arr[left], t) === 0) swap(arr, left, j);else {
-                 j++;
-                 swap(arr, j, right);
-               }
-               if (j <= k) left = j + 1;
-               if (k <= j) right = j - 1;
-             }
-           }
+         function update() {
+           var geolocation = {
+             loc: [_position.coords.longitude, _position.coords.latitude]
+           };
+           var groups = layer.selectAll('.geolocations').selectAll('.geolocation').data([geolocation]);
+           groups.exit().remove();
+           var pointsEnter = groups.enter().append('g').attr('class', 'geolocation');
+           pointsEnter.append('circle').attr('class', 'geolocate-radius').attr('dx', '0').attr('dy', '0').attr('fill', 'rgb(15,128,225)').attr('fill-opacity', '0.3').attr('r', '0');
+           pointsEnter.append('circle').attr('dx', '0').attr('dy', '0').attr('fill', 'rgb(15,128,225)').attr('stroke', 'white').attr('stroke-width', '1.5').attr('r', '6');
+           groups.merge(pointsEnter).attr('transform', transform);
+           layer.select('.geolocate-radius').attr('r', accuracy(_position.coords.accuracy, geolocation.loc));
+         }

 
 

-           function swap(arr, i, j) {
-             var tmp = arr[i];
-             arr[i] = arr[j];
-             arr[j] = tmp;
+         function drawLocation(selection) {
+           var enabled = svgGeolocate.enabled;
+           layer = selection.selectAll('.layer-geolocate').data([0]);
+           layer.exit().remove();
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-geolocate').style('display', enabled ? 'block' : 'none');
+           layerEnter.append('g').attr('class', 'geolocations');
+           layer = layerEnter.merge(layer);
+
+           if (enabled) {
+             update();
+           } else {
+             layerOff();

            }
            }

+         }

 
 

-           function defaultCompare(a, b) {
-             return a < b ? -1 : a > b ? 1 : 0;
+         drawLocation.enabled = function (position, enabled) {
+           if (!arguments.length) return svgGeolocate.enabled;
+           _position = position;
+           svgGeolocate.enabled = enabled;
+
+           if (svgGeolocate.enabled) {
+             showLayer();
+             layerOn();
+           } else {
+             hideLayer();

            }
 
            }
 

-           return quickselect;
-         });
-       });
+           return this;
+         };

 
 

-       var rbush_1 = rbush;
-       var _default$2 = rbush;
+         init();
+         return drawLocation;
+       }

 
 

-       function rbush(maxEntries, format) {
-         if (!(this instanceof rbush)) return new rbush(maxEntries, format); // max entries in a node is 9 by default; min node fill is 40% for best performance
+       function svgLabels(projection, context) {
+         var path = d3_geoPath(projection);
+         var detected = utilDetect();
+         var baselineHack = detected.ie || detected.browser.toLowerCase() === 'edge' || detected.browser.toLowerCase() === 'firefox' && detected.version >= 70;

 
 

-         this._maxEntries = Math.max(4, maxEntries || 9);
-         this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
+         var _rdrawn = new RBush();

 
 

-         if (format) {
-           this._initFormat(format);
-         }
+         var _rskipped = new RBush();

 
 

-         this.clear();
-       }
+         var _textWidthCache = {};
+         var _entitybboxes = {}; // Listed from highest to lowest priority

 
 

-       rbush.prototype = {
-         all: function all() {
-           return this._all(this.data, []);
-         },
-         search: function search(bbox) {
-           var node = this.data,
-               result = [],
-               toBBox = this.toBBox;
-           if (!intersects$1(bbox, node)) return result;
-           var nodesToSearch = [],
-               i,
-               len,
-               child,
-               childBBox;
+         var labelStack = [['line', 'aeroway', '*', 12], ['line', 'highway', 'motorway', 12], ['line', 'highway', 'trunk', 12], ['line', 'highway', 'primary', 12], ['line', 'highway', 'secondary', 12], ['line', 'highway', 'tertiary', 12], ['line', 'highway', '*', 12], ['line', 'railway', '*', 12], ['line', 'waterway', '*', 12], ['area', 'aeroway', '*', 12], ['area', 'amenity', '*', 12], ['area', 'building', '*', 12], ['area', 'historic', '*', 12], ['area', 'leisure', '*', 12], ['area', 'man_made', '*', 12], ['area', 'natural', '*', 12], ['area', 'shop', '*', 12], ['area', 'tourism', '*', 12], ['area', 'camp_site', '*', 12], ['point', 'aeroway', '*', 10], ['point', 'amenity', '*', 10], ['point', 'building', '*', 10], ['point', 'historic', '*', 10], ['point', 'leisure', '*', 10], ['point', 'man_made', '*', 10], ['point', 'natural', '*', 10], ['point', 'shop', '*', 10], ['point', 'tourism', '*', 10], ['point', 'camp_site', '*', 10], ['line', 'name', '*', 12], ['area', 'name', '*', 12], ['point', 'name', '*', 10]];
+
+         function shouldSkipIcon(preset) {
+           var noIcons = ['building', 'landuse', 'natural'];
+           return noIcons.some(function (s) {
+             return preset.id.indexOf(s) >= 0;
+           });
+         }
+
+         function get(array, prop) {
+           return function (d, i) {
+             return array[i][prop];
+           };
+         }

 
 

-           while (node) {
-             for (i = 0, len = node.children.length; i < len; i++) {
-               child = node.children[i];
-               childBBox = node.leaf ? toBBox(child) : child;
+         function textWidth(text, size, elem) {
+           var c = _textWidthCache[size];
+           if (!c) c = _textWidthCache[size] = {};

 
 

-               if (intersects$1(bbox, childBBox)) {
-                 if (node.leaf) result.push(child);else if (contains$1(bbox, childBBox)) this._all(child, result);else nodesToSearch.push(child);
-               }
-             }
+           if (c[text]) {
+             return c[text];
+           } else if (elem) {
+             c[text] = elem.getComputedTextLength();
+             return c[text];
+           } else {
+             var str = encodeURIComponent(text).match(/%[CDEFcdef]/g);

 
 

-             node = nodesToSearch.pop();
+             if (str === null) {
+               return size / 3 * 2 * text.length;
+             } else {
+               return size / 3 * (2 * text.length + str.length);
+             }

            }
            }

+         }

 
 

-           return result;
-         },
-         collides: function collides(bbox) {
-           var node = this.data,
-               toBBox = this.toBBox;
-           if (!intersects$1(bbox, node)) return false;
-           var nodesToSearch = [],
-               i,
-               len,
-               child,
-               childBBox;
+         function drawLinePaths(selection, entities, filter, classes, labels) {
+           var paths = selection.selectAll('path').filter(filter).data(entities, osmEntity.key); // exit

 
 

-           while (node) {
-             for (i = 0, len = node.children.length; i < len; i++) {
-               child = node.children[i];
-               childBBox = node.leaf ? toBBox(child) : child;
+           paths.exit().remove(); // enter/update

 
 

-               if (intersects$1(bbox, childBBox)) {
-                 if (node.leaf || contains$1(bbox, childBBox)) return true;
-                 nodesToSearch.push(child);
-               }
-             }
+           paths.enter().append('path').style('stroke-width', get(labels, 'font-size')).attr('id', function (d) {
+             return 'ideditor-labelpath-' + d.id;
+           }).attr('class', classes).merge(paths).attr('d', get(labels, 'lineString'));
+         }

 
 

-             node = nodesToSearch.pop();
-           }
+         function drawLineLabels(selection, entities, filter, classes, labels) {
+           var texts = selection.selectAll('text.' + classes).filter(filter).data(entities, osmEntity.key); // exit

 
 

-           return false;
-         },
-         load: function load(data) {
-           if (!(data && data.length)) return this;
+           texts.exit().remove(); // enter

 
 

-           if (data.length < this._minEntries) {
-             for (var i = 0, len = data.length; i < len; i++) {
-               this.insert(data[i]);
-             }
+           texts.enter().append('text').attr('class', function (d, i) {
+             return classes + ' ' + labels[i].classes + ' ' + d.id;
+           }).attr('dy', baselineHack ? '0.35em' : null).append('textPath').attr('class', 'textpath'); // update

 
 

-             return this;
-           } // recursively build the tree with the given data from scratch using OMT algorithm
+           selection.selectAll('text.' + classes).selectAll('.textpath').filter(filter).data(entities, osmEntity.key).attr('startOffset', '50%').attr('xlink:href', function (d) {
+             return '#ideditor-labelpath-' + d.id;
+           }).text(utilDisplayNameForPath);
+         }

 
 

+         function drawPointLabels(selection, entities, filter, classes, labels) {
+           var texts = selection.selectAll('text.' + classes).filter(filter).data(entities, osmEntity.key); // exit

 
 

-           var node = this._build(data.slice(), 0, data.length - 1, 0);
+           texts.exit().remove(); // enter/update

 
 

-           if (!this.data.children.length) {
-             // save as is if tree is empty
-             this.data = node;
-           } else if (this.data.height === node.height) {
-             // split root if trees have the same height
-             this._splitRoot(this.data, node);
-           } else {
-             if (this.data.height < node.height) {
-               // swap trees if inserted one is bigger
-               var tmpNode = this.data;
-               this.data = node;
-               node = tmpNode;
-             } // insert the small tree into the large tree at appropriate level
+           texts.enter().append('text').attr('class', function (d, i) {
+             return classes + ' ' + labels[i].classes + ' ' + d.id;
+           }).merge(texts).attr('x', get(labels, 'x')).attr('y', get(labels, 'y')).style('text-anchor', get(labels, 'textAnchor')).text(utilDisplayName).each(function (d, i) {
+             textWidth(utilDisplayName(d), labels[i].height, this);
+           });
+         }

 
 

+         function drawAreaLabels(selection, entities, filter, classes, labels) {
+           entities = entities.filter(hasText);
+           labels = labels.filter(hasText);
+           drawPointLabels(selection, entities, filter, classes, labels);

 
 

-             this._insert(node, this.data.height - node.height - 1, true);
+           function hasText(d, i) {
+             return labels[i].hasOwnProperty('x') && labels[i].hasOwnProperty('y');

            }
            }

+         }

 
 

-           return this;
-         },
-         insert: function insert(item) {
-           if (item) this._insert(item, this.data.height - 1);
-           return this;
-         },
-         clear: function clear() {
-           this.data = createNode$1([]);
-           return this;
-         },
-         remove: function remove(item, equalsFn) {
-           if (!item) return this;
-           var node = this.data,
-               bbox = this.toBBox(item),
-               path = [],
-               indexes = [],
-               i,
-               parent,
-               index,
-               goingUp; // depth-first iterative tree traversal
-
-           while (node || path.length) {
-             if (!node) {
-               // go up
-               node = path.pop();
-               parent = path[path.length - 1];
-               i = indexes.pop();
-               goingUp = true;
-             }
-
-             if (node.leaf) {
-               // check current node
-               index = findItem$1(item, node.children, equalsFn);
+         function drawAreaIcons(selection, entities, filter, classes, labels) {
+           var icons = selection.selectAll('use.' + classes).filter(filter).data(entities, osmEntity.key); // exit

 
 

-               if (index !== -1) {
-                 // item found, remove the item and condense tree upwards
-                 node.children.splice(index, 1);
-                 path.push(node);
+           icons.exit().remove(); // enter/update

 
 

-                 this._condense(path);
+           icons.enter().append('use').attr('class', 'icon ' + classes).attr('width', '17px').attr('height', '17px').merge(icons).attr('transform', get(labels, 'transform')).attr('xlink:href', function (d) {
+             var preset = _mainPresetIndex.match(d, context.graph());
+             var picon = preset && preset.icon;

 
 

-                 return this;
-               }
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return '#' + picon + (isMaki ? '-15' : '');

              }
              }

+           });
+         }

 
 

-             if (!goingUp && !node.leaf && contains$1(node, bbox)) {
-               // go down
-               path.push(node);
-               indexes.push(i);
-               i = 0;
-               parent = node;
-               node = node.children[0];
-             } else if (parent) {
-               // go right
-               i++;
-               node = parent.children[i];
-               goingUp = false;
-             } else node = null; // nothing found
+         function drawCollisionBoxes(selection, rtree, which) {
+           var classes = 'debug ' + which + ' ' + (which === 'debug-skipped' ? 'orange' : 'yellow');
+           var gj = [];

 
 

+           if (context.getDebug('collision')) {
+             gj = rtree.all().map(function (d) {
+               return {
+                 type: 'Polygon',
+                 coordinates: [[[d.minX, d.minY], [d.maxX, d.minY], [d.maxX, d.maxY], [d.minX, d.maxY], [d.minX, d.minY]]]
+               };
+             });

            }
 
            }
 

-           return this;
-         },
-         toBBox: function toBBox(item) {
-           return item;
-         },
-         compareMinX: compareNodeMinX$1,
-         compareMinY: compareNodeMinY$1,
-         toJSON: function toJSON() {
-           return this.data;
-         },
-         fromJSON: function fromJSON(data) {
-           this.data = data;
-           return this;
-         },
-         _all: function _all(node, result) {
-           var nodesToSearch = [];
-
-           while (node) {
-             if (node.leaf) result.push.apply(result, node.children);else nodesToSearch.push.apply(nodesToSearch, node.children);
-             node = nodesToSearch.pop();
-           }
+           var boxes = selection.selectAll('.' + which).data(gj); // exit

 
 

-           return result;
-         },
-         _build: function _build(items, left, right, height) {
-           var N = right - left + 1,
-               M = this._maxEntries,
-               node;
+           boxes.exit().remove(); // enter/update

 
 

-           if (N <= M) {
-             // reached leaf level; return leaf
-             node = createNode$1(items.slice(left, right + 1));
-             calcBBox$1(node, this.toBBox);
-             return node;
-           }
+           boxes.enter().append('path').attr('class', classes).merge(boxes).attr('d', d3_geoPath());
+         }

 
 

-           if (!height) {
-             // target height of the bulk-loaded tree
-             height = Math.ceil(Math.log(N) / Math.log(M)); // target number of root entries to maximize storage utilization
+         function drawLabels(selection, graph, entities, filter, dimensions, fullRedraw) {
+           var wireframe = context.surface().classed('fill-wireframe');
+           var zoom = geoScaleToZoom(projection.scale());
+           var labelable = [];
+           var renderNodeAs = {};
+           var i, j, k, entity, geometry;

 
 

-             M = Math.ceil(N / Math.pow(M, height - 1));
+           for (i = 0; i < labelStack.length; i++) {
+             labelable.push([]);

            }
 
            }
 

-           node = createNode$1([]);
-           node.leaf = false;
-           node.height = height; // split the items into M mostly square tiles
+           if (fullRedraw) {
+             _rdrawn.clear();

 
 

-           var N2 = Math.ceil(N / M),
-               N1 = N2 * Math.ceil(Math.sqrt(M)),
-               i,
-               j,
-               right2,
-               right3;
-           multiSelect$1(items, left, right, N1, this.compareMinX);
+             _rskipped.clear();

 
 

-           for (i = left; i <= right; i += N1) {
-             right2 = Math.min(i + N1 - 1, right);
-             multiSelect$1(items, i, right2, N2, this.compareMinY);
+             _entitybboxes = {};
+           } else {
+             for (i = 0; i < entities.length; i++) {
+               entity = entities[i];
+               var toRemove = [].concat(_entitybboxes[entity.id] || []).concat(_entitybboxes[entity.id + 'I'] || []);

 
 

-             for (j = i; j <= right2; j += N2) {
-               right3 = Math.min(j + N2 - 1, right2); // pack each entry recursively
+               for (j = 0; j < toRemove.length; j++) {
+                 _rdrawn.remove(toRemove[j]);

 
 

-               node.children.push(this._build(items, j, right3, height - 1));
+                 _rskipped.remove(toRemove[j]);
+               }

              }
              }

-           }
+           } // Loop through all the entities to do some preprocessing

 
 

-           calcBBox$1(node, this.toBBox);
-           return node;
-         },
-         _chooseSubtree: function _chooseSubtree(bbox, node, level, path) {
-           var i, len, child, targetNode, area, enlargement, minArea, minEnlargement;

 
 

-           while (true) {
-             path.push(node);
-             if (node.leaf || path.length - 1 === level) break;
-             minArea = minEnlargement = Infinity;
+           for (i = 0; i < entities.length; i++) {
+             entity = entities[i];
+             geometry = entity.geometry(graph); // Insert collision boxes around interesting points/vertices

 
 

-             for (i = 0, len = node.children.length; i < len; i++) {
-               child = node.children[i];
-               area = bboxArea$1(child);
-               enlargement = enlargedArea$1(bbox, child) - area; // choose entry with the least area enlargement
+             if (geometry === 'point' || geometry === 'vertex' && isInterestingVertex(entity)) {
+               var hasDirections = entity.directions(graph, projection).length;
+               var markerPadding;

 
 

-               if (enlargement < minEnlargement) {
-                 minEnlargement = enlargement;
-                 minArea = area < minArea ? area : minArea;
-                 targetNode = child;
-               } else if (enlargement === minEnlargement) {
-                 // otherwise choose one with the smallest area
-                 if (area < minArea) {
-                   minArea = area;
-                   targetNode = child;
-                 }
+               if (!wireframe && geometry === 'point' && !(zoom >= 18 && hasDirections)) {
+                 renderNodeAs[entity.id] = 'point';
+                 markerPadding = 20; // extra y for marker height
+               } else {
+                 renderNodeAs[entity.id] = 'vertex';
+                 markerPadding = 0;

                }
                }

-             }

 
 

-             node = targetNode || node.children[0];
-           }
+               var coord = projection(entity.loc);
+               var nodePadding = 10;
+               var bbox = {
+                 minX: coord[0] - nodePadding,
+                 minY: coord[1] - nodePadding - markerPadding,
+                 maxX: coord[0] + nodePadding,
+                 maxY: coord[1] + nodePadding
+               };
+               doInsert(bbox, entity.id + 'P');
+             } // From here on, treat vertices like points

 
 

-           return node;
-         },
-         _insert: function _insert(item, level, isNode) {
-           var toBBox = this.toBBox,
-               bbox = isNode ? item : toBBox(item),
-               insertPath = []; // find the best node for accommodating the item, saving all nodes along the path too

 
 

-           var node = this._chooseSubtree(bbox, this.data, level, insertPath); // put the item into the node
+             if (geometry === 'vertex') {
+               geometry = 'point';
+             } // Determine which entities are label-able

 
 
 
 

-           node.children.push(item);
-           extend$3(node, bbox); // split on node overflow; propagate upwards if necessary
+             var preset = geometry === 'area' && _mainPresetIndex.match(entity, graph);
+             var icon = preset && !shouldSkipIcon(preset) && preset.icon;
+             if (!icon && !utilDisplayName(entity)) continue;

 
 

-           while (level >= 0) {
-             if (insertPath[level].children.length > this._maxEntries) {
-               this._split(insertPath, level);
+             for (k = 0; k < labelStack.length; k++) {
+               var matchGeom = labelStack[k][0];
+               var matchKey = labelStack[k][1];
+               var matchVal = labelStack[k][2];
+               var hasVal = entity.tags[matchKey];

 
 

-               level--;
-             } else break;
-           } // adjust bboxes along the insertion path
+               if (geometry === matchGeom && hasVal && (matchVal === '*' || matchVal === hasVal)) {
+                 labelable[k].push(entity);
+                 break;
+               }
+             }
+           }

 
 

+           var positions = {
+             point: [],
+             line: [],
+             area: []
+           };
+           var labelled = {
+             point: [],
+             line: [],
+             area: []
+           }; // Try and find a valid label for labellable entities

 
 

-           this._adjustParentBBoxes(bbox, insertPath, level);
-         },
-         // split overflowed node into two
-         _split: function _split(insertPath, level) {
-           var node = insertPath[level],
-               M = node.children.length,
-               m = this._minEntries;
+           for (k = 0; k < labelable.length; k++) {
+             var fontSize = labelStack[k][3];

 
 

-           this._chooseSplitAxis(node, m, M);
+             for (i = 0; i < labelable[k].length; i++) {
+               entity = labelable[k][i];
+               geometry = entity.geometry(graph);
+               var getName = geometry === 'line' ? utilDisplayNameForPath : utilDisplayName;
+               var name = getName(entity);
+               var width = name && textWidth(name, fontSize);
+               var p = null;

 
 

-           var splitIndex = this._chooseSplitIndex(node, m, M);
+               if (geometry === 'point' || geometry === 'vertex') {
+                 // no point or vertex labels in wireframe mode
+                 // no vertex labels at low zooms (vertices have no icons)
+                 if (wireframe) continue;
+                 var renderAs = renderNodeAs[entity.id];
+                 if (renderAs === 'vertex' && zoom < 17) continue;
+                 p = getPointLabel(entity, width, fontSize, renderAs);
+               } else if (geometry === 'line') {
+                 p = getLineLabel(entity, width, fontSize);
+               } else if (geometry === 'area') {
+                 p = getAreaLabel(entity, width, fontSize);
+               }

 
 

-           var newNode = createNode$1(node.children.splice(splitIndex, node.children.length - splitIndex));
-           newNode.height = node.height;
-           newNode.leaf = node.leaf;
-           calcBBox$1(node, this.toBBox);
-           calcBBox$1(newNode, this.toBBox);
-           if (level) insertPath[level - 1].children.push(newNode);else this._splitRoot(node, newNode);
-         },
-         _splitRoot: function _splitRoot(node, newNode) {
-           // split root node
-           this.data = createNode$1([node, newNode]);
-           this.data.height = node.height + 1;
-           this.data.leaf = false;
-           calcBBox$1(this.data, this.toBBox);
-         },
-         _chooseSplitIndex: function _chooseSplitIndex(node, m, M) {
-           var i, bbox1, bbox2, overlap, area, minOverlap, minArea, index;
-           minOverlap = minArea = Infinity;
+               if (p) {
+                 if (geometry === 'vertex') {
+                   geometry = 'point';
+                 } // treat vertex like point

 
 

-           for (i = m; i <= M - m; i++) {
-             bbox1 = distBBox$1(node, 0, i, this.toBBox);
-             bbox2 = distBBox$1(node, i, M, this.toBBox);
-             overlap = intersectionArea$1(bbox1, bbox2);
-             area = bboxArea$1(bbox1) + bboxArea$1(bbox2); // choose distribution with minimum overlap

 
 

-             if (overlap < minOverlap) {
-               minOverlap = overlap;
-               index = i;
-               minArea = area < minArea ? area : minArea;
-             } else if (overlap === minOverlap) {
-               // otherwise choose distribution with minimum area
-               if (area < minArea) {
-                 minArea = area;
-                 index = i;
+                 p.classes = geometry + ' tag-' + labelStack[k][1];
+                 positions[geometry].push(p);
+                 labelled[geometry].push(entity);

                }
              }
            }
 
                }
              }
            }
 

-           return index;
-         },
-         // sorts node children by the best axis for split
-         _chooseSplitAxis: function _chooseSplitAxis(node, m, M) {
-           var compareMinX = node.leaf ? this.compareMinX : compareNodeMinX$1,
-               compareMinY = node.leaf ? this.compareMinY : compareNodeMinY$1,
-               xMargin = this._allDistMargin(node, m, M, compareMinX),
-               yMargin = this._allDistMargin(node, m, M, compareMinY); // if total distributions margin value is minimal for x, sort by minX,
-           // otherwise it's already sorted by minY
-
-
-           if (xMargin < yMargin) node.children.sort(compareMinX);
-         },
-         // total margin of all possible split distributions where each node is at least m full
-         _allDistMargin: function _allDistMargin(node, m, M, compare) {
-           node.children.sort(compare);
-           var toBBox = this.toBBox,
-               leftBBox = distBBox$1(node, 0, m, toBBox),
-               rightBBox = distBBox$1(node, M - m, M, toBBox),
-               margin = bboxMargin$1(leftBBox) + bboxMargin$1(rightBBox),
-               i,
-               child;
-
-           for (i = m; i < M - m; i++) {
-             child = node.children[i];
-             extend$3(leftBBox, node.leaf ? toBBox(child) : child);
-             margin += bboxMargin$1(leftBBox);
+           function isInterestingVertex(entity) {
+             var selectedIDs = context.selectedIDs();
+             return entity.hasInterestingTags() || entity.isEndpoint(graph) || entity.isConnected(graph) || selectedIDs.indexOf(entity.id) !== -1 || graph.parentWays(entity).some(function (parent) {
+               return selectedIDs.indexOf(parent.id) !== -1;
+             });

            }
 
            }
 

-           for (i = M - m - 1; i >= m; i--) {
-             child = node.children[i];
-             extend$3(rightBBox, node.leaf ? toBBox(child) : child);
-             margin += bboxMargin$1(rightBBox);
-           }
+           function getPointLabel(entity, width, height, geometry) {
+             var y = geometry === 'point' ? -12 : 0;
+             var pointOffsets = {
+               ltr: [15, y, 'start'],
+               rtl: [-15, y, 'end']
+             };
+             var textDirection = _mainLocalizer.textDirection();
+             var coord = projection(entity.loc);
+             var textPadding = 2;
+             var offset = pointOffsets[textDirection];
+             var p = {
+               height: height,
+               width: width,
+               x: coord[0] + offset[0],
+               y: coord[1] + offset[1],
+               textAnchor: offset[2]
+             }; // insert a collision box for the text label..

 
 

-           return margin;
-         },
-         _adjustParentBBoxes: function _adjustParentBBoxes(bbox, path, level) {
-           // adjust bboxes along the given tree path
-           for (var i = level; i >= 0; i--) {
-             extend$3(path[i], bbox);
-           }
-         },
-         _condense: function _condense(path) {
-           // go through the path, removing empty nodes and updating bboxes
-           for (var i = path.length - 1, siblings; i >= 0; i--) {
-             if (path[i].children.length === 0) {
-               if (i > 0) {
-                 siblings = path[i - 1].children;
-                 siblings.splice(siblings.indexOf(path[i]), 1);
-               } else this.clear();
-             } else calcBBox$1(path[i], this.toBBox);
-           }
-         },
-         _initFormat: function _initFormat(format) {
-           // data format (minX, minY, maxX, maxY accessors)
-           // uses eval-type function compilation instead of just accepting a toBBox function
-           // because the algorithms are very sensitive to sorting functions performance,
-           // so they should be dead simple and without inner calls
-           var compareArr = ['return a', ' - b', ';'];
-           this.compareMinX = new Function('a', 'b', compareArr.join(format[0]));
-           this.compareMinY = new Function('a', 'b', compareArr.join(format[1]));
-           this.toBBox = new Function('a', 'return {minX: a' + format[0] + ', minY: a' + format[1] + ', maxX: a' + format[2] + ', maxY: a' + format[3] + '};');
-         }
-       };
+             var bbox;
+
+             if (textDirection === 'rtl') {
+               bbox = {
+                 minX: p.x - width - textPadding,
+                 minY: p.y - height / 2 - textPadding,
+                 maxX: p.x + textPadding,
+                 maxY: p.y + height / 2 + textPadding
+               };
+             } else {
+               bbox = {
+                 minX: p.x - textPadding,
+                 minY: p.y - height / 2 - textPadding,
+                 maxX: p.x + width + textPadding,
+                 maxY: p.y + height / 2 + textPadding
+               };
+             }

 
 

-       function findItem$1(item, items, equalsFn) {
-         if (!equalsFn) return items.indexOf(item);
+             if (tryInsert([bbox], entity.id, true)) {
+               return p;
+             }
+           }

 
 

-         for (var i = 0; i < items.length; i++) {
-           if (equalsFn(item, items[i])) return i;
-         }
+           function getLineLabel(entity, width, height) {
+             var viewport = geoExtent(context.projection.clipExtent()).polygon();
+             var points = graph.childNodes(entity).map(function (node) {
+               return projection(node.loc);
+             });
+             var length = geoPathLength(points);
+             if (length < width + 20) return; // % along the line to attempt to place the label

 
 

-         return -1;
-       } // calculate node's bbox from bboxes of its children
+             var lineOffsets = [50, 45, 55, 40, 60, 35, 65, 30, 70, 25, 75, 20, 80, 15, 95, 10, 90, 5, 95];
+             var padding = 3;

 
 

+             for (var i = 0; i < lineOffsets.length; i++) {
+               var offset = lineOffsets[i];
+               var middle = offset / 100 * length;
+               var start = middle - width / 2;
+               if (start < 0 || start + width > length) continue; // generate subpath and ignore paths that are invalid or don't cross viewport.

 
 

-       function calcBBox$1(node, toBBox) {
-         distBBox$1(node, 0, node.children.length, toBBox, node);
-       } // min bounding rectangle of node children from k to p-1
+               var sub = subpath(points, start, start + width);

 
 

+               if (!sub || !geoPolygonIntersectsPolygon(viewport, sub, true)) {
+                 continue;
+               }

 
 

-       function distBBox$1(node, k, p, toBBox, destNode) {
-         if (!destNode) destNode = createNode$1(null);
-         destNode.minX = Infinity;
-         destNode.minY = Infinity;
-         destNode.maxX = -Infinity;
-         destNode.maxY = -Infinity;
+               var isReverse = reverse(sub);

 
 

-         for (var i = k, child; i < p; i++) {
-           child = node.children[i];
-           extend$3(destNode, node.leaf ? toBBox(child) : child);
-         }
+               if (isReverse) {
+                 sub = sub.reverse();
+               }

 
 

-         return destNode;
-       }
+               var bboxes = [];
+               var boxsize = (height + 2) / 2;

 
 

-       function extend$3(a, b) {
-         a.minX = Math.min(a.minX, b.minX);
-         a.minY = Math.min(a.minY, b.minY);
-         a.maxX = Math.max(a.maxX, b.maxX);
-         a.maxY = Math.max(a.maxY, b.maxY);
-         return a;
-       }
+               for (var j = 0; j < sub.length - 1; j++) {
+                 var a = sub[j];
+                 var b = sub[j + 1]; // split up the text into small collision boxes

 
 

-       function compareNodeMinX$1(a, b) {
-         return a.minX - b.minX;
-       }
+                 var num = Math.max(1, Math.floor(geoVecLength(a, b) / boxsize / 2));

 
 

-       function compareNodeMinY$1(a, b) {
-         return a.minY - b.minY;
-       }
+                 for (var box = 0; box < num; box++) {
+                   var p = geoVecInterp(a, b, box / num);
+                   var x0 = p[0] - boxsize - padding;
+                   var y0 = p[1] - boxsize - padding;
+                   var x1 = p[0] + boxsize + padding;
+                   var y1 = p[1] + boxsize + padding;
+                   bboxes.push({
+                     minX: Math.min(x0, x1),
+                     minY: Math.min(y0, y1),
+                     maxX: Math.max(x0, x1),
+                     maxY: Math.max(y0, y1)
+                   });
+                 }
+               }

 
 

-       function bboxArea$1(a) {
-         return (a.maxX - a.minX) * (a.maxY - a.minY);
-       }
+               if (tryInsert(bboxes, entity.id, false)) {
+                 // accept this one
+                 return {
+                   'font-size': height + 2,
+                   lineString: lineString(sub),
+                   startOffset: offset + '%'
+                 };
+               }
+             }

 
 

-       function bboxMargin$1(a) {
-         return a.maxX - a.minX + (a.maxY - a.minY);
-       }
+             function reverse(p) {
+               var angle = Math.atan2(p[1][1] - p[0][1], p[1][0] - p[0][0]);
+               return !(p[0][0] < p[p.length - 1][0] && angle < Math.PI / 2 && angle > -Math.PI / 2);
+             }

 
 

-       function enlargedArea$1(a, b) {
-         return (Math.max(b.maxX, a.maxX) - Math.min(b.minX, a.minX)) * (Math.max(b.maxY, a.maxY) - Math.min(b.minY, a.minY));
-       }
+             function lineString(points) {
+               return 'M' + points.join('L');
+             }

 
 

-       function intersectionArea$1(a, b) {
-         var minX = Math.max(a.minX, b.minX),
-             minY = Math.max(a.minY, b.minY),
-             maxX = Math.min(a.maxX, b.maxX),
-             maxY = Math.min(a.maxY, b.maxY);
-         return Math.max(0, maxX - minX) * Math.max(0, maxY - minY);
-       }
+             function subpath(points, from, to) {
+               var sofar = 0;
+               var start, end, i0, i1;

 
 

-       function contains$1(a, b) {
-         return a.minX <= b.minX && a.minY <= b.minY && b.maxX <= a.maxX && b.maxY <= a.maxY;
-       }
+               for (var i = 0; i < points.length - 1; i++) {
+                 var a = points[i];
+                 var b = points[i + 1];
+                 var current = geoVecLength(a, b);
+                 var portion;

 
 

-       function intersects$1(a, b) {
-         return b.minX <= a.maxX && b.minY <= a.maxY && b.maxX >= a.minX && b.maxY >= a.minY;
-       }
+                 if (!start && sofar + current >= from) {
+                   portion = (from - sofar) / current;
+                   start = [a[0] + portion * (b[0] - a[0]), a[1] + portion * (b[1] - a[1])];
+                   i0 = i + 1;
+                 }

 
 

-       function createNode$1(children) {
-         return {
-           children: children,
-           height: 1,
-           leaf: true,
-           minX: Infinity,
-           minY: Infinity,
-           maxX: -Infinity,
-           maxY: -Infinity
-         };
-       } // sort an array so that items come in groups of n unsorted items, with groups sorted between each other;
-       // combines selection algorithm with binary divide & conquer approach
+                 if (!end && sofar + current >= to) {
+                   portion = (to - sofar) / current;
+                   end = [a[0] + portion * (b[0] - a[0]), a[1] + portion * (b[1] - a[1])];
+                   i1 = i + 1;
+                 }

 
 

+                 sofar += current;
+               }

 
 

-       function multiSelect$1(arr, left, right, n, compare) {
-         var stack = [left, right],
-             mid;
+               var result = points.slice(i0, i1);
+               result.unshift(start);
+               result.push(end);
+               return result;
+             }
+           }

 
 

-         while (stack.length) {
-           right = stack.pop();
-           left = stack.pop();
-           if (right - left <= n) continue;
-           mid = left + Math.ceil((right - left) / n / 2) * n;
-           quickselect$2(arr, mid, left, right, compare);
-           stack.push(left, mid, mid, right);
-         }
-       }
-       rbush_1["default"] = _default$2;
+           function getAreaLabel(entity, width, height) {
+             var centroid = path.centroid(entity.asGeoJSON(graph));
+             var extent = entity.extent(graph);
+             var areaWidth = projection(extent[1])[0] - projection(extent[0])[0];
+             if (isNaN(centroid[0]) || areaWidth < 20) return;
+             var preset = _mainPresetIndex.match(entity, context.graph());
+             var picon = preset && preset.icon;
+             var iconSize = 17;
+             var padding = 2;
+             var p = {};

 
 

-       var lineclip_1$1 = lineclip$1;
-       lineclip$1.polyline = lineclip$1;
-       lineclip$1.polygon = polygonclip$1; // Cohen-Sutherland line clippign algorithm, adapted to efficiently
-       // handle polylines rather than just segments
+             if (picon) {
+               // icon and label..
+               if (addIcon()) {
+                 addLabel(iconSize + padding);
+                 return p;
+               }
+             } else {
+               // label only..
+               if (addLabel(0)) {
+                 return p;
+               }
+             }

 
 

-       function lineclip$1(points, bbox, result) {
-         var len = points.length,
-             codeA = bitCode$1(points[0], bbox),
-             part = [],
-             i,
-             a,
-             b,
-             codeB,
-             lastCode;
-         if (!result) result = [];
+             function addIcon() {
+               var iconX = centroid[0] - iconSize / 2;
+               var iconY = centroid[1] - iconSize / 2;
+               var bbox = {
+                 minX: iconX,
+                 minY: iconY,
+                 maxX: iconX + iconSize,
+                 maxY: iconY + iconSize
+               };

 
 

-         for (i = 1; i < len; i++) {
-           a = points[i - 1];
-           b = points[i];
-           codeB = lastCode = bitCode$1(b, bbox);
+               if (tryInsert([bbox], entity.id + 'I', true)) {
+                 p.transform = 'translate(' + iconX + ',' + iconY + ')';
+                 return true;
+               }

 
 

-           while (true) {
-             if (!(codeA | codeB)) {
-               // accept
-               part.push(a);
+               return false;
+             }

 
 

-               if (codeB !== lastCode) {
-                 // segment went outside
-                 part.push(b);
+             function addLabel(yOffset) {
+               if (width && areaWidth >= width + 20) {
+                 var labelX = centroid[0];
+                 var labelY = centroid[1] + yOffset;
+                 var bbox = {
+                   minX: labelX - width / 2 - padding,
+                   minY: labelY - height / 2 - padding,
+                   maxX: labelX + width / 2 + padding,
+                   maxY: labelY + height / 2 + padding
+                 };

 
 

-                 if (i < len - 1) {
-                   // start a new line
-                   result.push(part);
-                   part = [];
+                 if (tryInsert([bbox], entity.id, true)) {
+                   p.x = labelX;
+                   p.y = labelY;
+                   p.textAnchor = 'middle';
+                   p.height = height;
+                   return true;

                  }
                  }

-               } else if (i === len - 1) {
-                 part.push(b);

                }
 
                }
 

-               break;
-             } else if (codeA & codeB) {
-               // trivial reject
-               break;
-             } else if (codeA) {
-               // a outside, intersect with clip edge
-               a = intersect$1(a, b, codeA, bbox);
-               codeA = bitCode$1(a, bbox);
-             } else {
-               // b outside
-               b = intersect$1(a, b, codeB, bbox);
-               codeB = bitCode$1(b, bbox);
+               return false;

              }
              }

-           }
-
-           codeA = lastCode;
-         }
-
-         if (part.length) result.push(part);
-         return result;
-       } // Sutherland-Hodgeman polygon clipping algorithm
-
+           } // force insert a singular bounding box
+           // singular box only, no array, id better be unique

 
 

-       function polygonclip$1(points, bbox) {
-         var result, edge, prev, prevInside, i, p, inside; // clip against each side of the clip rectangle

 
 

-         for (edge = 1; edge <= 8; edge *= 2) {
-           result = [];
-           prev = points[points.length - 1];
-           prevInside = !(bitCode$1(prev, bbox) & edge);
+           function doInsert(bbox, id) {
+             bbox.id = id;
+             var oldbox = _entitybboxes[id];

 
 

-           for (i = 0; i < points.length; i++) {
-             p = points[i];
-             inside = !(bitCode$1(p, bbox) & edge); // if segment goes through the clip window, add an intersection
+             if (oldbox) {
+               _rdrawn.remove(oldbox);
+             }

 
 

-             if (inside !== prevInside) result.push(intersect$1(prev, p, edge, bbox));
-             if (inside) result.push(p); // add a point if it's inside
+             _entitybboxes[id] = bbox;

 
 

-             prev = p;
-             prevInside = inside;
+             _rdrawn.insert(bbox);

            }
 
            }
 

-           points = result;
-           if (!points.length) break;
-         }
+           function tryInsert(bboxes, id, saveSkipped) {
+             var skipped = false;

 
 

-         return result;
-       } // intersect a segment against one of the 4 lines that make up the bbox
+             for (var i = 0; i < bboxes.length; i++) {
+               var bbox = bboxes[i];
+               bbox.id = id; // Check that label is visible

 
 

+               if (bbox.minX < 0 || bbox.minY < 0 || bbox.maxX > dimensions[0] || bbox.maxY > dimensions[1]) {
+                 skipped = true;
+                 break;
+               }

 
 

-       function intersect$1(a, b, edge, bbox) {
-         return edge & 8 ? [a[0] + (b[0] - a[0]) * (bbox[3] - a[1]) / (b[1] - a[1]), bbox[3]] : // top
-         edge & 4 ? [a[0] + (b[0] - a[0]) * (bbox[1] - a[1]) / (b[1] - a[1]), bbox[1]] : // bottom
-         edge & 2 ? [bbox[2], a[1] + (b[1] - a[1]) * (bbox[2] - a[0]) / (b[0] - a[0])] : // right
-         edge & 1 ? [bbox[0], a[1] + (b[1] - a[1]) * (bbox[0] - a[0]) / (b[0] - a[0])] : // left
-         null;
-       } // bit code reflects the point position relative to the bbox:
-       //         left  mid  right
-       //    top  1001  1000  1010
-       //    mid  0001  0000  0010
-       // bottom  0101  0100  0110
+               if (_rdrawn.collides(bbox)) {
+                 skipped = true;
+                 break;
+               }
+             }

 
 

+             _entitybboxes[id] = bboxes;

 
 

-       function bitCode$1(p, bbox) {
-         var code = 0;
-         if (p[0] < bbox[0]) code |= 1; // left
-         else if (p[0] > bbox[2]) code |= 2; // right
+             if (skipped) {
+               if (saveSkipped) {
+                 _rskipped.load(bboxes);
+               }
+             } else {
+               _rdrawn.load(bboxes);
+             }

 
 

-         if (p[1] < bbox[1]) code |= 4; // bottom
-         else if (p[1] > bbox[3]) code |= 8; // top
+             return !skipped;
+           }

 
 

-         return code;
-       }
+           var layer = selection.selectAll('.layer-osm.labels');
+           layer.selectAll('.labels-group').data(['halo', 'label', 'debug']).enter().append('g').attr('class', function (d) {
+             return 'labels-group ' + d;
+           });
+           var halo = layer.selectAll('.labels-group.halo');
+           var label = layer.selectAll('.labels-group.label');
+           var debug = layer.selectAll('.labels-group.debug'); // points

 
 

-       var whichPolygon_1 = whichPolygon;
+           drawPointLabels(label, labelled.point, filter, 'pointlabel', positions.point);
+           drawPointLabels(halo, labelled.point, filter, 'pointlabel-halo', positions.point); // lines

 
 

-       function whichPolygon(data) {
-         var bboxes = [];
+           drawLinePaths(layer, labelled.line, filter, '', positions.line);
+           drawLineLabels(label, labelled.line, filter, 'linelabel', positions.line);
+           drawLineLabels(halo, labelled.line, filter, 'linelabel-halo', positions.line); // areas

 
 

-         for (var i = 0; i < data.features.length; i++) {
-           var feature = data.features[i];
-           var coords = feature.geometry.coordinates;
+           drawAreaLabels(label, labelled.area, filter, 'arealabel', positions.area);
+           drawAreaLabels(halo, labelled.area, filter, 'arealabel-halo', positions.area);
+           drawAreaIcons(label, labelled.area, filter, 'areaicon', positions.area);
+           drawAreaIcons(halo, labelled.area, filter, 'areaicon-halo', positions.area); // debug

 
 

-           if (feature.geometry.type === 'Polygon') {
-             bboxes.push(treeItem(coords, feature.properties));
-           } else if (feature.geometry.type === 'MultiPolygon') {
-             for (var j = 0; j < coords.length; j++) {
-               bboxes.push(treeItem(coords[j], feature.properties));
-             }
-           }
+           drawCollisionBoxes(debug, _rskipped, 'debug-skipped');
+           drawCollisionBoxes(debug, _rdrawn, 'debug-drawn');
+           layer.call(filterLabels);

          }
 
          }
 

-         var tree = rbush_1().load(bboxes);
+         function filterLabels(selection) {
+           var drawLayer = selection.selectAll('.layer-osm.labels');
+           var layers = drawLayer.selectAll('.labels-group.halo, .labels-group.label');
+           layers.selectAll('.nolabel').classed('nolabel', false);
+           var mouse = context.map().mouse();
+           var graph = context.graph();
+           var selectedIDs = context.selectedIDs();
+           var ids = [];
+           var pad, bbox; // hide labels near the mouse

 
 

-         function query(p, multi) {
-           var output = [],
-               result = tree.search({
-             minX: p[0],
-             minY: p[1],
-             maxX: p[0],
-             maxY: p[1]
-           });
+           if (mouse) {
+             pad = 20;
+             bbox = {
+               minX: mouse[0] - pad,
+               minY: mouse[1] - pad,
+               maxX: mouse[0] + pad,
+               maxY: mouse[1] + pad
+             };

 
 

-           for (var i = 0; i < result.length; i++) {
-             if (insidePolygon(result[i].coords, p)) {
-               if (multi) output.push(result[i].props);else return result[i].props;
-             }
-           }
+             var nearMouse = _rdrawn.search(bbox).map(function (entity) {
+               return entity.id;
+             });

 
 

-           return multi && output.length ? output : null;
-         }
+             ids.push.apply(ids, nearMouse);
+           } // hide labels on selected nodes (they look weird when dragging / haloed)

 
 

-         query.tree = tree;

 
 

-         query.bbox = function queryBBox(bbox) {
-           var output = [];
-           var result = tree.search({
-             minX: bbox[0],
-             minY: bbox[1],
-             maxX: bbox[2],
-             maxY: bbox[3]
-           });
+           for (var i = 0; i < selectedIDs.length; i++) {
+             var entity = graph.hasEntity(selectedIDs[i]);

 
 

-           for (var i = 0; i < result.length; i++) {
-             if (polygonIntersectsBBox(result[i].coords, bbox)) {
-               output.push(result[i].props);
+             if (entity && entity.type === 'node') {
+               ids.push(selectedIDs[i]);

              }
            }
 
              }
            }
 

-           return output;
-         };
-
-         return query;
-       }
-
-       function polygonIntersectsBBox(polygon, bbox) {
-         var bboxCenter = [(bbox[0] + bbox[2]) / 2, (bbox[1] + bbox[3]) / 2];
-         if (insidePolygon(polygon, bboxCenter)) return true;
-
-         for (var i = 0; i < polygon.length; i++) {
-           if (lineclip_1$1(polygon[i], bbox).length > 0) return true;
-         }
+           layers.selectAll(utilEntitySelector(ids)).classed('nolabel', true); // draw the mouse bbox if debugging is on..

 
 

-         return false;
-       } // ray casting algorithm for detecting if point is in polygon
+           var debug = selection.selectAll('.labels-group.debug');
+           var gj = [];

 
 

+           if (context.getDebug('collision')) {
+             gj = bbox ? [{
+               type: 'Polygon',
+               coordinates: [[[bbox.minX, bbox.minY], [bbox.maxX, bbox.minY], [bbox.maxX, bbox.maxY], [bbox.minX, bbox.maxY], [bbox.minX, bbox.minY]]]
+             }] : [];
+           }

 
 

-       function insidePolygon(rings, p) {
-         var inside = false;
+           var box = debug.selectAll('.debug-mouse').data(gj); // exit

 
 

-         for (var i = 0, len = rings.length; i < len; i++) {
-           var ring = rings[i];
+           box.exit().remove(); // enter/update

 
 

-           for (var j = 0, len2 = ring.length, k = len2 - 1; j < len2; k = j++) {
-             if (rayIntersect(p, ring[j], ring[k])) inside = !inside;
-           }
+           box.enter().append('path').attr('class', 'debug debug-mouse yellow').merge(box).attr('d', d3_geoPath());

          }
 
          }
 

-         return inside;
-       }
+         var throttleFilterLabels = throttle(filterLabels, 100);

 
 

-       function rayIntersect(p, p1, p2) {
-         return p1[1] > p[1] !== p2[1] > p[1] && p[0] < (p2[0] - p1[0]) * (p[1] - p1[1]) / (p2[1] - p1[1]) + p1[0];
-       }
+         drawLabels.observe = function (selection) {
+           var listener = function listener() {
+             throttleFilterLabels(selection);
+           };

 
 

-       function treeItem(coords, props) {
-         var item = {
-           minX: Infinity,
-           minY: Infinity,
-           maxX: -Infinity,
-           maxY: -Infinity,
-           coords: coords,
-           props: props
+           selection.on('mousemove.hidelabels', listener);
+           context.on('enter.hidelabels', listener);

          };
 
          };
 

-         for (var i = 0; i < coords[0].length; i++) {
-           var p = coords[0][i];
-           item.minX = Math.min(item.minX, p[0]);
-           item.minY = Math.min(item.minY, p[1]);
-           item.maxX = Math.max(item.maxX, p[0]);
-           item.maxY = Math.max(item.maxY, p[1]);
-         }
+         drawLabels.off = function (selection) {
+           throttleFilterLabels.cancel();
+           selection.on('mousemove.hidelabels', null);
+           context.on('enter.hidelabels', null);
+         };

 
 

-         return item;
+         return drawLabels;

        }
 
        }
 

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-       var whichPolygonGetter = {};
-       var featuresByCode = {};
-       var idFilterRegex = /\bThe\b|\bthe\b|\band\b|\bof\b|[-_ .,()&[\]/]/g;
-       var levels = ['subterritory', 'territory', 'country', 'intermediateRegion', 'subregion', 'region', 'union', 'world'];
-       loadDerivedDataAndCaches(borders);
-
-       function loadDerivedDataAndCaches(borders) {
-         var identifierProps = ['iso1A2', 'iso1A3', 'm49', 'wikidata', 'emojiFlag', 'nameEn'];
-         var geometryFeatures = [];
-
-         for (var i in borders.features) {
-           var _feature = borders.features[i];
-           _feature.properties.id = _feature.properties.iso1A2 || _feature.properties.m49;
-           loadM49(_feature);
-           loadIsoStatus(_feature);
-           loadLevel(_feature);
-           loadGroups(_feature);
-           loadRoadSpeedUnit(_feature);
-           loadDriveSide(_feature);
-           loadFlag(_feature);
-           cacheFeatureByIDs(_feature);
-           if (_feature.geometry) geometryFeatures.push(_feature);
-         }
+       var _layerEnabled$1 = false;

 
 

-         for (var _i in borders.features) {
-           var _feature2 = borders.features[_i];
+       var _qaService$1;

 
 

-           _feature2.properties.groups.sort(function (groupID1, groupID2) {
-             return levels.indexOf(featuresByCode[groupID1].properties.level) - levels.indexOf(featuresByCode[groupID2].properties.level);
-           });
+       function svgImproveOSM(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           return dispatch.call('change');
+         }, 1000);

 
 

-           loadMembersForGroupsOf(_feature2);
-         }
+         var minZoom = 12;
+         var touchLayer = select(null);
+         var drawLayer = select(null);
+         var layerVisible = false;

 
 

-         var geometryOnlyCollection = {
-           type: 'RegionFeatureCollection',
-           features: geometryFeatures
-         };
-         whichPolygonGetter = whichPolygon_1(geometryOnlyCollection);
+         function markerPath(selection, klass) {
+           selection.attr('class', klass).attr('transform', 'translate(-10, -28)').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
+         } // Loosely-coupled improveOSM service for fetching issues

 
 

-         function loadGroups(feature) {
-           var props = feature.properties;

 
 

-           if (!props.groups) {
-             props.groups = [];
-           }
+         function getService() {
+           if (services.improveOSM && !_qaService$1) {
+             _qaService$1 = services.improveOSM;

 
 

-           if (props.country) {
-             props.groups.push(props.country);
+             _qaService$1.on('loaded', throttledRedraw);
+           } else if (!services.improveOSM && _qaService$1) {
+             _qaService$1 = null;

            }
 
            }
 

-           if (props.m49 !== '001') {
-             props.groups.push('001');
-           }
-         }
+           return _qaService$1;
+         } // Show the markers

 
 

-         function loadM49(feature) {
-           var props = feature.properties;

 
 

-           if (!props.m49 && props.iso1N3) {
-             props.m49 = props.iso1N3;
+         function editOn() {
+           if (!layerVisible) {
+             layerVisible = true;
+             drawLayer.style('display', 'block');

            }
            }

-         }
+         } // Immediately remove the markers and their touch targets

 
 

-         function loadIsoStatus(feature) {
-           var props = feature.properties;

 
 

-           if (!props.isoStatus && props.iso1A2) {
-             props.isoStatus = 'official';
+         function editOff() {
+           if (layerVisible) {
+             layerVisible = false;
+             drawLayer.style('display', 'none');
+             drawLayer.selectAll('.qaItem.improveOSM').remove();
+             touchLayer.selectAll('.qaItem.improveOSM').remove();

            }
            }

-         }
+         } // Enable the layer.  This shows the markers and transitions them to visible.

 
 

-         function loadLevel(feature) {
-           var props = feature.properties;
-           if (props.level) return;

 
 

-           if (!props.country) {
-             props.level = 'country';
-           } else if (props.isoStatus === 'official') {
-             props.level = 'territory';
-           } else {
-             props.level = 'subterritory';
-           }
-         }
+         function layerOn() {
+           editOn();
+           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
+             return dispatch.call('change');
+           });
+         } // Disable the layer.  This transitions the layer invisible and then hides the markers.

 
 

-         function loadRoadSpeedUnit(feature) {
-           var props = feature.properties;

 
 

-           if (props.roadSpeedUnit === undefined && props.iso1A2 && props.iso1A2 !== 'EU') {
-             props.roadSpeedUnit = 'km/h';
-           }
-         }
+         function layerOff() {
+           throttledRedraw.cancel();
+           drawLayer.interrupt();
+           touchLayer.selectAll('.qaItem.improveOSM').remove();
+           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
+             editOff();
+             dispatch.call('change');
+           });
+         } // Update the issue markers

 
 

-         function loadDriveSide(feature) {
-           var props = feature.properties;

 
 

-           if (props.driveSide === undefined && props.iso1A2 && props.iso1A2 !== 'EU') {
-             props.driveSide = 'right';
-           }
-         }
+         function updateMarkers() {
+           if (!layerVisible || !_layerEnabled$1) return;
+           var service = getService();
+           var selectedID = context.selectedErrorID();
+           var data = service ? service.getItems(projection) : [];
+           var getTransform = svgPointTransform(projection); // Draw markers..

 
 

-         function loadFlag(feature) {
-           if (!feature.properties.iso1A2) return;
-           var flag = feature.properties.iso1A2.replace(/./g, function (_char) {
-             return String.fromCodePoint(_char.charCodeAt(0) + 127397);
-           });
-           feature.properties.emojiFlag = flag;
-         }
+           var markers = drawLayer.selectAll('.qaItem.improveOSM').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-         function loadMembersForGroupsOf(feature) {
-           var featureID = feature.properties.id;
-           var standardizedGroupIDs = [];
+           markers.exit().remove(); // enter

 
 

-           for (var j in feature.properties.groups) {
-             var groupID = feature.properties.groups[j];
-             var groupFeature = featuresByCode[groupID];
-             standardizedGroupIDs.push(groupFeature.properties.id);
+           var markersEnter = markers.enter().append('g').attr('class', function (d) {
+             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
+           });
+           markersEnter.append('polygon').call(markerPath, 'shadow');
+           markersEnter.append('ellipse').attr('cx', 0).attr('cy', 0).attr('rx', 4.5).attr('ry', 2).attr('class', 'stroke');
+           markersEnter.append('polygon').attr('fill', 'currentColor').call(markerPath, 'qaItem-fill');
+           markersEnter.append('use').attr('transform', 'translate(-6.5, -23)').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('xlink:href', function (d) {
+             var picon = d.icon;

 
 

-             if (groupFeature.properties.members) {
-               groupFeature.properties.members.push(featureID);
+             if (!picon) {
+               return '';

              } else {
              } else {

-               groupFeature.properties.members = [featureID];
+               var isMaki = /^maki-/.test(picon);
+               return "#".concat(picon).concat(isMaki ? '-11' : '');

              }
              }

-           }
-
-           feature.properties.groups = standardizedGroupIDs;
-         }
+           }); // update

 
 

-         function cacheFeatureByIDs(feature) {
-           for (var k in identifierProps) {
-             var prop = identifierProps[k];
-             var id = prop && feature.properties[prop];
+           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
+             return d.id === selectedID;
+           }).attr('transform', getTransform); // Draw targets..

 
 

-             if (id) {
-               id = id.replace(idFilterRegex, '').toUpperCase();
-               featuresByCode[id] = feature;
-             }
-           }
+           if (touchLayer.empty()) return;
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var targets = touchLayer.selectAll('.qaItem.improveOSM').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-           if (feature.properties.aliases) {
-             for (var j in feature.properties.aliases) {
-               var alias = feature.properties.aliases[j].replace(idFilterRegex, '').toUpperCase();
-               featuresByCode[alias] = feature;
-             }
-           }
-         }
-       }
+           targets.exit().remove(); // enter/update

 
 

-       function locArray(loc) {
-         if (Array.isArray(loc)) {
-           return loc;
-         } else if (loc.coordinates) {
-           return loc.coordinates;
-         }
+           targets.enter().append('rect').attr('width', '20px').attr('height', '30px').attr('x', '-10px').attr('y', '-28px').merge(targets).sort(sortY).attr('class', function (d) {
+             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
+           }).attr('transform', getTransform);

 
 

-         return loc.geometry.coordinates;
-       }
+           function sortY(a, b) {
+             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : b.loc[1] - a.loc[1];
+           }
+         } // Draw the ImproveOSM layer and schedule loading issues and updating markers.

 
 

-       function smallestFeature(loc) {
-         var query = locArray(loc);
-         var featureProperties = whichPolygonGetter(query);
-         if (!featureProperties) return null;
-         return featuresByCode[featureProperties.id];
-       }

 
 

-       function countryFeature(loc) {
-         var feature = smallestFeature(loc);
-         if (!feature) return null;
-         var countryCode = feature.properties.country || feature.properties.iso1A2;
-         return featuresByCode[countryCode];
-       }
+         function drawImproveOSM(selection) {
+           var service = getService();
+           var surface = context.surface();

 
 

-       function featureForLoc(loc, opts) {
-         if (opts && opts.level && opts.level !== 'country') {
-           var features = featuresContaining(loc);
-           var targetLevel = opts.level;
-           var targetLevelIndex = levels.indexOf(targetLevel);
-           if (targetLevelIndex === -1) return null;
+           if (surface && !surface.empty()) {
+             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
+           }

 
 

-           for (var i in features) {
-             var _feature3 = features[i];
+           drawLayer = selection.selectAll('.layer-improveOSM').data(service ? [0] : []);
+           drawLayer.exit().remove();
+           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-improveOSM').style('display', _layerEnabled$1 ? 'block' : 'none').merge(drawLayer);

 
 

-             if (_feature3.properties.level === targetLevel || levels.indexOf(_feature3.properties.level) > targetLevelIndex) {
-               return _feature3;
+           if (_layerEnabled$1) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               service.loadIssues(projection);
+               updateMarkers();
+             } else {
+               editOff();

              }
            }
              }
            }

+         } // Toggles the layer on and off

 
 

-           return null;
-         }
-
-         return countryFeature(loc);
-       }

 
 

-       function featureForID(id) {
-         var stringID;
+         drawImproveOSM.enabled = function (val) {
+           if (!arguments.length) return _layerEnabled$1;
+           _layerEnabled$1 = val;

 
 

-         if (typeof id === 'number') {
-           stringID = id.toString();
+           if (_layerEnabled$1) {
+             layerOn();
+           } else {
+             layerOff();

 
 

-           if (stringID.length === 1) {
-             stringID = '00' + stringID;
-           } else if (stringID.length === 2) {
-             stringID = '0' + stringID;
+             if (context.selectedErrorID()) {
+               context.enter(modeBrowse(context));
+             }

            }
            }

-         } else {
-           stringID = id.replace(idFilterRegex, '').toUpperCase();
-         }

 
 

-         return featuresByCode[stringID] || null;
-       }
+           dispatch.call('change');
+           return this;
+         };

 
 

-       function smallestOrMatchingFeature(query) {
-         if (_typeof(query) === 'object') {
-           return smallestFeature(query);
-         }
+         drawImproveOSM.supported = function () {
+           return !!getService();
+         };

 
 

-         return featureForID(query);
+         return drawImproveOSM;

        }
 
        }
 

-       function feature(query, opts) {
-         if (_typeof(query) === 'object') {
-           return featureForLoc(query, opts);
-         }
+       var _layerEnabled = false;

 
 

-         return featureForID(query);
-       }
-       function iso1A2Code(query, opts) {
-         var match = feature(query, opts);
-         if (!match) return null;
-         return match.properties.iso1A2 || null;
-       }
-       function featuresContaining(query, strict) {
-         var feature = smallestOrMatchingFeature(query);
-         if (!feature) return [];
-         var features = [];
+       var _qaService;

 
 

-         if (!strict || _typeof(query) === 'object') {
-           features.push(feature);
-         }
+       function svgOsmose(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           return dispatch.call('change');
+         }, 1000);

 
 

-         var properties = feature.properties;
+         var minZoom = 12;
+         var touchLayer = select(null);
+         var drawLayer = select(null);
+         var layerVisible = false;

 
 

-         for (var i in properties.groups) {
-           var groupID = properties.groups[i];
-           features.push(featuresByCode[groupID]);
-         }
+         function markerPath(selection, klass) {
+           selection.attr('class', klass).attr('transform', 'translate(-10, -28)').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
+         } // Loosely-coupled osmose service for fetching issues

 
 

-         return features;
-       }
-       function roadSpeedUnit(query) {
-         var feature = smallestOrMatchingFeature(query);
-         return feature && feature.properties.roadSpeedUnit || null;
-       }

 
 

-       var _dataDeprecated;
+         function getService() {
+           if (services.osmose && !_qaService) {
+             _qaService = services.osmose;

 
 

-       var _nsi;
+             _qaService.on('loaded', throttledRedraw);
+           } else if (!services.osmose && _qaService) {
+             _qaService = null;
+           }

 
 

-       function validationOutdatedTags() {
-         var type = 'outdated_tags';
-         var nsiKeys = ['amenity', 'shop', 'tourism', 'leisure', 'office']; // A concern here in switching to async data means that `_dataDeprecated`
-         // and `_nsi` will not be available at first, so the data on early tiles
-         // may not have tags validated fully.
-         // initialize deprecated tags array
+           return _qaService;
+         } // Show the markers

 
 

-         _mainFileFetcher.get('deprecated').then(function (d) {
-           return _dataDeprecated = d;
-         })["catch"](function () {
-           /* ignore */
-         });
-         _mainFileFetcher.get('nsi_brands').then(function (d) {
-           _nsi = {
-             brands: d.brands,
-             matcher: matcher$1(),
-             wikidata: {},
-             wikipedia: {}
-           }; // initialize name-suggestion-index matcher

 
 

-           _nsi.matcher.buildMatchIndex(d.brands); // index all known wikipedia and wikidata tags
+         function editOn() {
+           if (!layerVisible) {
+             layerVisible = true;
+             drawLayer.style('display', 'block');
+           }
+         } // Immediately remove the markers and their touch targets

 
 
 
 

-           Object.keys(d.brands).forEach(function (kvnd) {
-             var brand = d.brands[kvnd];
-             var wd = brand.tags['brand:wikidata'];
-             var wp = brand.tags['brand:wikipedia'];
+         function editOff() {
+           if (layerVisible) {
+             layerVisible = false;
+             drawLayer.style('display', 'none');
+             drawLayer.selectAll('.qaItem.osmose').remove();
+             touchLayer.selectAll('.qaItem.osmose').remove();
+           }
+         } // Enable the layer.  This shows the markers and transitions them to visible.

 
 

-             if (wd) {
-               _nsi.wikidata[wd] = kvnd;
-             }

 
 

-             if (wp) {
-               _nsi.wikipedia[wp] = kvnd;
-             }
+         function layerOn() {
+           editOn();
+           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
+             return dispatch.call('change');

            });
            });

-           return _nsi;
-         })["catch"](function () {
-           /* ignore */
-         });
-
-         function oldTagIssues(entity, graph) {
-           var oldTags = Object.assign({}, entity.tags); // shallow copy
-
-           var preset = _mainPresetIndex.match(entity, graph);
-           var subtype = 'deprecated_tags';
-           if (!preset) return []; // upgrade preset..
-
-           if (preset.replacement) {
-             var newPreset = _mainPresetIndex.item(preset.replacement);
-             graph = actionChangePreset(entity.id, preset, newPreset, true
-             /* skip field defaults */
-             )(graph);
-             entity = graph.entity(entity.id);
-             preset = newPreset;
-           } // upgrade tags..
-
+         } // Disable the layer.  This transitions the layer invisible and then hides the markers.

 
 

-           if (_dataDeprecated) {
-             var deprecatedTags = entity.deprecatedTags(_dataDeprecated);

 
 

-             if (deprecatedTags.length) {
-               deprecatedTags.forEach(function (tag) {
-                 graph = actionUpgradeTags(entity.id, tag.old, tag.replace)(graph);
-               });
-               entity = graph.entity(entity.id);
-             }
-           } // add missing addTags..
+         function layerOff() {
+           throttledRedraw.cancel();
+           drawLayer.interrupt();
+           touchLayer.selectAll('.qaItem.osmose').remove();
+           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
+             editOff();
+             dispatch.call('change');
+           });
+         } // Update the issue markers

 
 
 
 

-           var newTags = Object.assign({}, entity.tags); // shallow copy
+         function updateMarkers() {
+           if (!layerVisible || !_layerEnabled) return;
+           var service = getService();
+           var selectedID = context.selectedErrorID();
+           var data = service ? service.getItems(projection) : [];
+           var getTransform = svgPointTransform(projection); // Draw markers..

 
 

-           if (preset.tags !== preset.addTags) {
-             Object.keys(preset.addTags).forEach(function (k) {
-               if (!newTags[k]) {
-                 if (preset.addTags[k] === '*') {
-                   newTags[k] = 'yes';
-                 } else {
-                   newTags[k] = preset.addTags[k];
-                 }
-               }
-             });
-           }
+           var markers = drawLayer.selectAll('.qaItem.osmose').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-           if (_nsi) {
-             // Do `wikidata` or `wikipedia` identify this entity as a brand?  #6416
-             // If so, these tags can be swapped to `brand:wikidata`/`brand:wikipedia`
-             var isBrand;
+           markers.exit().remove(); // enter

 
 

-             if (newTags.wikidata) {
-               // try matching `wikidata`
-               isBrand = _nsi.wikidata[newTags.wikidata];
-             }
+           var markersEnter = markers.enter().append('g').attr('class', function (d) {
+             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
+           });
+           markersEnter.append('polygon').call(markerPath, 'shadow');
+           markersEnter.append('ellipse').attr('cx', 0).attr('cy', 0).attr('rx', 4.5).attr('ry', 2).attr('class', 'stroke');
+           markersEnter.append('polygon').attr('fill', function (d) {
+             return service.getColor(d.item);
+           }).call(markerPath, 'qaItem-fill');
+           markersEnter.append('use').attr('transform', 'translate(-6.5, -23)').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('xlink:href', function (d) {
+             var picon = d.icon;

 
 

-             if (!isBrand && newTags.wikipedia) {
-               // fallback to `wikipedia`
-               isBrand = _nsi.wikipedia[newTags.wikipedia];
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return "#".concat(picon).concat(isMaki ? '-11' : '');

              }
              }

+           }); // update

 
 

-             if (isBrand && !newTags.office) {
-               // but avoid doing this for corporate offices
-               if (newTags.wikidata) {
-                 newTags['brand:wikidata'] = newTags.wikidata;
-                 delete newTags.wikidata;
-               }
+           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
+             return d.id === selectedID;
+           }).attr('transform', getTransform); // Draw targets..

 
 

-               if (newTags.wikipedia) {
-                 newTags['brand:wikipedia'] = newTags.wikipedia;
-                 delete newTags.wikipedia;
-               } // I considered setting `name` and other tags here, but they aren't unique per wikidata
-               // (Q2759586 -> in USA "Papa John's", in Russia "Папа Джонс")
-               // So users will really need to use a preset or assign `name` themselves.
+           if (touchLayer.empty()) return;
+           var fillClass = context.getDebug('target') ? 'pink' : 'nocolor';
+           var targets = touchLayer.selectAll('.qaItem.osmose').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-             } // try key/value|name match against name-suggestion-index
+           targets.exit().remove(); // enter/update

 
 

+           targets.enter().append('rect').attr('width', '20px').attr('height', '30px').attr('x', '-10px').attr('y', '-28px').merge(targets).sort(sortY).attr('class', function (d) {
+             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
+           }).attr('transform', getTransform);

 
 

-             if (newTags.name) {
-               for (var i = 0; i < nsiKeys.length; i++) {
-                 var k = nsiKeys[i];
-                 if (!newTags[k]) continue;
-                 var center = entity.extent(graph).center();
-                 var countryCode = iso1A2Code(center);
+           function sortY(a, b) {
+             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : b.loc[1] - a.loc[1];
+           }
+         } // Draw the Osmose layer and schedule loading issues and updating markers.

 
 

-                 var match = _nsi.matcher.matchKVN(k, newTags[k], newTags.name, countryCode && countryCode.toLowerCase());

 
 

-                 if (!match) continue; // for now skip ambiguous matches (like Target~(USA) vs Target~(Australia))
+         function drawOsmose(selection) {
+           var service = getService();
+           var surface = context.surface();

 
 

-                 if (match.d) continue;
-                 var brand = _nsi.brands[match.kvnd];
+           if (surface && !surface.empty()) {
+             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
+           }

 
 

-                 if (brand && brand.tags['brand:wikidata'] && brand.tags['brand:wikidata'] !== entity.tags['not:brand:wikidata']) {
-                   subtype = 'noncanonical_brand';
-                   var keepTags = ['takeaway'].reduce(function (acc, k) {
-                     if (newTags[k]) {
-                       acc[k] = newTags[k];
-                     }
+           drawLayer = selection.selectAll('.layer-osmose').data(service ? [0] : []);
+           drawLayer.exit().remove();
+           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-osmose').style('display', _layerEnabled ? 'block' : 'none').merge(drawLayer);

 
 

-                     return acc;
-                   }, {});
-                   nsiKeys.forEach(function (k) {
-                     return delete newTags[k];
-                   });
-                   Object.assign(newTags, brand.tags, keepTags);
-                   break;
-                 }
-               }
+           if (_layerEnabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               service.loadIssues(projection);
+               updateMarkers();
+             } else {
+               editOff();

              }
              }

-           } // determine diff
-
-
-           var tagDiff = utilTagDiff(oldTags, newTags);
-           if (!tagDiff.length) return [];
-           var isOnlyAddingTags = tagDiff.every(function (d) {
-             return d.type === '+';
-           });
-           var prefix = '';
-
-           if (subtype === 'noncanonical_brand') {
-             prefix = 'noncanonical_brand.';
-           } else if (subtype === 'deprecated_tags' && isOnlyAddingTags) {
-             subtype = 'incomplete_tags';
-             prefix = 'incomplete.';
-           } // don't allow autofixing brand tags
-
+           }
+         } // Toggles the layer on and off

 
 

-           var autoArgs = subtype !== 'noncanonical_brand' ? [doUpgrade, _t('issues.fix.upgrade_tags.annotation')] : null;
-           return [new validationIssue({
-             type: type,
-             subtype: subtype,
-             severity: 'warning',
-             message: showMessage,
-             reference: showReference,
-             entityIds: [entity.id],
-             hash: JSON.stringify(tagDiff),
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 autoArgs: autoArgs,
-                 title: _t.html('issues.fix.upgrade_tags.title'),
-                 onClick: function onClick(context) {
-                   context.perform(doUpgrade, _t('issues.fix.upgrade_tags.annotation'));
-                 }
-               })];
-             }
-           })];

 
 

-           function doUpgrade(graph) {
-             var currEntity = graph.hasEntity(entity.id);
-             if (!currEntity) return graph;
-             var newTags = Object.assign({}, currEntity.tags); // shallow copy
+         drawOsmose.enabled = function (val) {
+           if (!arguments.length) return _layerEnabled;
+           _layerEnabled = val;

 
 

-             tagDiff.forEach(function (diff) {
-               if (diff.type === '-') {
-                 delete newTags[diff.key];
-               } else if (diff.type === '+') {
-                 newTags[diff.key] = diff.newVal;
-               }
+           if (_layerEnabled) {
+             // Strings supplied by Osmose fetched before showing layer for first time
+             // NOTE: Currently no way to change locale in iD at runtime, would need to re-call this method if that's ever implemented
+             // Also, If layer is toggled quickly multiple requests are sent
+             getService().loadStrings().then(layerOn)["catch"](function (err) {
+               console.log(err); // eslint-disable-line no-console

              });
              });

-             return actionChangeTags(currEntity.id, newTags)(graph);
-           }
-
-           function showMessage(context) {
-             var currEntity = context.hasEntity(entity.id);
-             if (!currEntity) return '';
-             var messageID = "issues.outdated_tags.".concat(prefix, "message");
+           } else {
+             layerOff();

 
 

-             if (subtype === 'noncanonical_brand' && isOnlyAddingTags) {
-               messageID += '_incomplete';
+             if (context.selectedErrorID()) {
+               context.enter(modeBrowse(context));

              }
              }

-
-             return _t.html(messageID, {
-               feature: utilDisplayLabel(currEntity, context.graph())
-             });

            }
 
            }
 

-           function showReference(selection) {
-             var enter = selection.selectAll('.issue-reference').data([0]).enter();
-             enter.append('div').attr('class', 'issue-reference').html(_t.html("issues.outdated_tags.".concat(prefix, "reference")));
-             enter.append('strong').html(_t.html('issues.suggested'));
-             enter.append('table').attr('class', 'tagDiff-table').selectAll('.tagDiff-row').data(tagDiff).enter().append('tr').attr('class', 'tagDiff-row').append('td').attr('class', function (d) {
-               var klass = d.type === '+' ? 'add' : 'remove';
-               return "tagDiff-cell tagDiff-cell-".concat(klass);
-             }).html(function (d) {
-               return d.display;
-             });
-           }
-         }
+           dispatch.call('change');
+           return this;
+         };

 
 

-         function oldMultipolygonIssues(entity, graph) {
-           var multipolygon, outerWay;
+         drawOsmose.supported = function () {
+           return !!getService();
+         };

 
 

-           if (entity.type === 'relation') {
-             outerWay = osmOldMultipolygonOuterMemberOfRelation(entity, graph);
-             multipolygon = entity;
-           } else if (entity.type === 'way') {
-             multipolygon = osmIsOldMultipolygonOuterMember(entity, graph);
-             outerWay = entity;
-           } else {
-             return [];
-           }
+         return drawOsmose;
+       }

 
 

-           if (!multipolygon || !outerWay) return [];
-           return [new validationIssue({
-             type: type,
-             subtype: 'old_multipolygon',
-             severity: 'warning',
-             message: showMessage,
-             reference: showReference,
-             entityIds: [outerWay.id, multipolygon.id],
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 autoArgs: [doUpgrade, _t('issues.fix.move_tags.annotation')],
-                 title: _t.html('issues.fix.move_tags.title'),
-                 onClick: function onClick(context) {
-                   context.perform(doUpgrade, _t('issues.fix.move_tags.annotation'));
-                 }
-               })];
-             }
-           })];
+       function svgStreetside(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-           function doUpgrade(graph) {
-             var currMultipolygon = graph.hasEntity(multipolygon.id);
-             var currOuterWay = graph.hasEntity(outerWay.id);
-             if (!currMultipolygon || !currOuterWay) return graph;
-             currMultipolygon = currMultipolygon.mergeTags(currOuterWay.tags);
-             graph = graph.replace(currMultipolygon);
-             return actionChangeTags(currOuterWay.id, {})(graph);
-           }
+         var minZoom = 14;
+         var minMarkerZoom = 16;
+         var minViewfieldZoom = 18;
+         var layer = select(null);
+         var _viewerYaw = 0;
+         var _selectedSequence = null;

 
 

-           function showMessage(context) {
-             var currMultipolygon = context.hasEntity(multipolygon.id);
-             if (!currMultipolygon) return '';
-             return _t.html('issues.old_multipolygon.message', {
-               multipolygon: utilDisplayLabel(currMultipolygon, context.graph())
-             });
-           }
+         var _streetside;
+         /**
+          * init().
+          */

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.old_multipolygon.reference'));
-           }
+
+         function init() {
+           if (svgStreetside.initialized) return; // run once
+
+           svgStreetside.enabled = false;
+           svgStreetside.initialized = true;

          }
          }

+         /**
+          * getService().
+          */

 
 

-         var validation = function checkOutdatedTags(entity, graph) {
-           var issues = oldMultipolygonIssues(entity, graph);
-           if (!issues.length) issues = oldTagIssues(entity, graph);
-           return issues;
-         };

 
 

-         validation.type = type;
-         return validation;
-       }
+         function getService() {
+           if (services.streetside && !_streetside) {
+             _streetside = services.streetside;

 
 

-       function validationPrivateData() {
-         var type = 'private_data'; // assume that some buildings are private
+             _streetside.event.on('viewerChanged.svgStreetside', viewerChanged).on('loadedImages.svgStreetside', throttledRedraw);
+           } else if (!services.streetside && _streetside) {
+             _streetside = null;
+           }

 
 

-         var privateBuildingValues = {
-           detached: true,
-           farm: true,
-           house: true,
-           houseboat: true,
-           residential: true,
-           semidetached_house: true,
-           static_caravan: true
-         }; // but they might be public if they have one of these other tags
+           return _streetside;
+         }
+         /**
+          * showLayer().
+          */

 
 

-         var publicKeys = {
-           amenity: true,
-           craft: true,
-           historic: true,
-           leisure: true,
-           office: true,
-           shop: true,
-           tourism: true
-         }; // these tags may contain personally identifying info

 
 

-         var personalTags = {
-           'contact:email': true,
-           'contact:fax': true,
-           'contact:phone': true,
-           email: true,
-           fax: true,
-           phone: true
-         };
+         function showLayer() {
+           var service = getService();
+           if (!service) return;
+           editOn();
+           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
+             dispatch.call('change');
+           });
+         }
+         /**
+          * hideLayer().
+          */

 
 

-         var validation = function checkPrivateData(entity) {
-           var tags = entity.tags;
-           if (!tags.building || !privateBuildingValues[tags.building]) return [];
-           var keepTags = {};

 
 

-           for (var k in tags) {
-             if (publicKeys[k]) return []; // probably a public feature
+         function hideLayer() {
+           throttledRedraw.cancel();
+           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
+         }
+         /**
+          * editOn().
+          */

 
 

-             if (!personalTags[k]) {
-               keepTags[k] = tags[k];
-             }
-           }

 
 

-           var tagDiff = utilTagDiff(tags, keepTags);
-           if (!tagDiff.length) return [];
-           var fixID = tagDiff.length === 1 ? 'remove_tag' : 'remove_tags';
-           return [new validationIssue({
-             type: type,
-             severity: 'warning',
-             message: showMessage,
-             reference: showReference,
-             entityIds: [entity.id],
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.' + fixID + '.title'),
-                 onClick: function onClick(context) {
-                   context.perform(doUpgrade, _t('issues.fix.upgrade_tags.annotation'));
-                 }
-               })];
-             }
-           })];
+         function editOn() {
+           layer.style('display', 'block');
+         }
+         /**
+          * editOff().
+          */

 
 

-           function doUpgrade(graph) {
-             var currEntity = graph.hasEntity(entity.id);
-             if (!currEntity) return graph;
-             var newTags = Object.assign({}, currEntity.tags); // shallow copy

 
 

-             tagDiff.forEach(function (diff) {
-               if (diff.type === '-') {
-                 delete newTags[diff.key];
-               } else if (diff.type === '+') {
-                 newTags[diff.key] = diff.newVal;
-               }
-             });
-             return actionChangeTags(currEntity.id, newTags)(graph);
-           }
+         function editOff() {
+           layer.selectAll('.viewfield-group').remove();
+           layer.style('display', 'none');
+         }
+         /**
+          * click() Handles 'bubble' point click event.
+          */

 
 

-           function showMessage(context) {
-             var currEntity = context.hasEntity(this.entityIds[0]);
-             if (!currEntity) return '';
-             return _t.html('issues.private_data.contact.message', {
-               feature: utilDisplayLabel(currEntity, context.graph())
-             });
-           }

 
 

-           function showReference(selection) {
-             var enter = selection.selectAll('.issue-reference').data([0]).enter();
-             enter.append('div').attr('class', 'issue-reference').html(_t.html('issues.private_data.reference'));
-             enter.append('strong').html(_t.html('issues.suggested'));
-             enter.append('table').attr('class', 'tagDiff-table').selectAll('.tagDiff-row').data(tagDiff).enter().append('tr').attr('class', 'tagDiff-row').append('td').attr('class', function (d) {
-               var klass = d.type === '+' ? 'add' : 'remove';
-               return 'tagDiff-cell tagDiff-cell-' + klass;
-             }).html(function (d) {
-               return d.display;
-             });
+         function click(d3_event, d) {
+           var service = getService();
+           if (!service) return; // try to preserve the viewer rotation when staying on the same sequence
+
+           if (d.sequenceKey !== _selectedSequence) {
+             _viewerYaw = 0; // reset

            }
            }

-         };

 
 

-         validation.type = type;
-         return validation;
-       }
+           _selectedSequence = d.sequenceKey;
+           service.ensureViewerLoaded(context).then(function () {
+             service.selectImage(context, d.key).yaw(_viewerYaw).showViewer(context);
+           });
+           context.map().centerEase(d.loc);
+         }
+         /**
+          * mouseover().
+          */

 
 

-       var _discardNameRegexes = [];
-       function validationSuspiciousName() {
-         var type = 'suspicious_name';
-         var keysToTestForGenericValues = ['aerialway', 'aeroway', 'amenity', 'building', 'craft', 'highway', 'leisure', 'railway', 'man_made', 'office', 'shop', 'tourism', 'waterway']; // A concern here in switching to async data means that `_nsiFilters` will not
-         // be available at first, so the data on early tiles may not have tags validated fully.

 
 

-         _mainFileFetcher.get('nsi_filters').then(function (filters) {
-           // known list of generic names (e.g. "bar")
-           _discardNameRegexes = filters.discardNames.map(function (discardName) {
-             return new RegExp(discardName, 'i');
-           });
-         })["catch"](function () {
-           /* ignore */
-         });
+         function mouseover(d3_event, d) {
+           var service = getService();
+           if (service) service.setStyles(context, d);
+         }
+         /**
+          * mouseout().
+          */

 
 

-         function isDiscardedSuggestionName(lowercaseName) {
-           return _discardNameRegexes.some(function (regex) {
-             return regex.test(lowercaseName);
-           });
-         } // test if the name is just the key or tag value (e.g. "park")

 
 

+         function mouseout() {
+           var service = getService();
+           if (service) service.setStyles(context, null);
+         }
+         /**
+          * transform().
+          */

 
 

-         function nameMatchesRawTag(lowercaseName, tags) {
-           for (var i = 0; i < keysToTestForGenericValues.length; i++) {
-             var key = keysToTestForGenericValues[i];
-             var val = tags[key];

 
 

-             if (val) {
-               val = val.toLowerCase();
+         function transform(d) {
+           var t = svgPointTransform(projection)(d);
+           var rot = d.ca + _viewerYaw;

 
 

-               if (key === lowercaseName || val === lowercaseName || key.replace(/\_/g, ' ') === lowercaseName || val.replace(/\_/g, ' ') === lowercaseName) {
-                 return true;
-               }
-             }
+           if (rot) {
+             t += ' rotate(' + Math.floor(rot) + ',0,0)';

            }
 
            }
 

-           return false;
-         }
-
-         function isGenericName(name, tags) {
-           name = name.toLowerCase();
-           return nameMatchesRawTag(name, tags) || isDiscardedSuggestionName(name);
+           return t;

          }
 
          }
 

-         function makeGenericNameIssue(entityId, nameKey, genericName, langCode) {
-           return new validationIssue({
-             type: type,
-             subtype: 'generic_name',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               if (!entity) return '';
-               var preset = _mainPresetIndex.match(entity, context.graph());
-               var langName = langCode && _mainLocalizer.languageName(langCode);
-               return _t.html('issues.generic_name.message' + (langName ? '_language' : ''), {
-                 feature: preset.name(),
-                 name: genericName,
-                 language: langName
-               });
-             },
-             reference: showReference,
-             entityIds: [entityId],
-             hash: nameKey + '=' + genericName,
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.remove_the_name.title'),
-                 onClick: function onClick(context) {
-                   var entityId = this.issue.entityIds[0];
-                   var entity = context.entity(entityId);
-                   var tags = Object.assign({}, entity.tags); // shallow copy
+         function viewerChanged() {
+           var service = getService();
+           if (!service) return;
+           var viewer = service.viewer();
+           if (!viewer) return; // update viewfield rotation

 
 

-                   delete tags[nameKey];
-                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_generic_name.annotation'));
-                 }
-               })];
-             }
-           });
+           _viewerYaw = viewer.getYaw(); // avoid updating if the map is currently transformed
+           // e.g. during drags or easing.

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));
-           }
+           if (context.map().isTransformed()) return;
+           layer.selectAll('.viewfield-group.currentView').attr('transform', transform);

          }
 
          }
 

-         function makeIncorrectNameIssue(entityId, nameKey, incorrectName, langCode) {
-           return new validationIssue({
-             type: type,
-             subtype: 'not_name',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               if (!entity) return '';
-               var preset = _mainPresetIndex.match(entity, context.graph());
-               var langName = langCode && _mainLocalizer.languageName(langCode);
-               return _t.html('issues.incorrect_name.message' + (langName ? '_language' : ''), {
-                 feature: preset.name(),
-                 name: incorrectName,
-                 language: langName
-               });
-             },
-             reference: showReference,
-             entityIds: [entityId],
-             hash: nameKey + '=' + incorrectName,
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 icon: 'iD-operation-delete',
-                 title: _t.html('issues.fix.remove_the_name.title'),
-                 onClick: function onClick(context) {
-                   var entityId = this.issue.entityIds[0];
-                   var entity = context.entity(entityId);
-                   var tags = Object.assign({}, entity.tags); // shallow copy
+         function filterBubbles(bubbles) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+           var usernames = context.photos().usernames();

 
 

-                   delete tags[nameKey];
-                   context.perform(actionChangeTags(entityId, tags), _t('issues.fix.remove_mistaken_name.annotation'));
-                 }
-               })];
-             }
-           });
+           if (fromDate) {
+             var fromTimestamp = new Date(fromDate).getTime();
+             bubbles = bubbles.filter(function (bubble) {
+               return new Date(bubble.captured_at).getTime() >= fromTimestamp;
+             });
+           }

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));
+           if (toDate) {
+             var toTimestamp = new Date(toDate).getTime();
+             bubbles = bubbles.filter(function (bubble) {
+               return new Date(bubble.captured_at).getTime() <= toTimestamp;
+             });

            }
            }

-         }

 
 

-         var validation = function checkGenericName(entity) {
-           // a generic name is okay if it's a known brand or entity
-           if (entity.hasWikidata()) return [];
-           var issues = [];
-           var notNames = (entity.tags['not:name'] || '').split(';');
+           if (usernames) {
+             bubbles = bubbles.filter(function (bubble) {
+               return usernames.indexOf(bubble.captured_by) !== -1;
+             });
+           }

 
 

-           for (var key in entity.tags) {
-             var m = key.match(/^name(?:(?::)([a-zA-Z_-]+))?$/);
-             if (!m) continue;
-             var langCode = m.length >= 2 ? m[1] : null;
-             var value = entity.tags[key];
+           return bubbles;
+         }

 
 

-             if (notNames.length) {
-               for (var i in notNames) {
-                 var notName = notNames[i];
+         function filterSequences(sequences) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+           var usernames = context.photos().usernames();

 
 

-                 if (notName && value === notName) {
-                   issues.push(makeIncorrectNameIssue(entity.id, key, value, langCode));
-                   continue;
-                 }
-               }
-             }
+           if (fromDate) {
+             var fromTimestamp = new Date(fromDate).getTime();
+             sequences = sequences.filter(function (sequences) {
+               return new Date(sequences.properties.captured_at).getTime() >= fromTimestamp;
+             });
+           }

 
 

-             if (isGenericName(value, entity.tags)) {
-               issues.push(makeGenericNameIssue(entity.id, key, value, langCode));
-             }
+           if (toDate) {
+             var toTimestamp = new Date(toDate).getTime();
+             sequences = sequences.filter(function (sequences) {
+               return new Date(sequences.properties.captured_at).getTime() <= toTimestamp;
+             });

            }
 
            }
 

-           return issues;
-         };
+           if (usernames) {
+             sequences = sequences.filter(function (sequences) {
+               return usernames.indexOf(sequences.properties.captured_by) !== -1;
+             });
+           }

 
 

-         validation.type = type;
-         return validation;
-       }
+           return sequences;
+         }
+         /**
+          * update().
+          */

 
 

-       function validationUnsquareWay(context) {
-         var type = 'unsquare_way';
-         var DEFAULT_DEG_THRESHOLD = 5; // see also issues.js
-         // use looser epsilon for detection to reduce warnings of buildings that are essentially square already

 
 

-         var epsilon = 0.05;
-         var nodeThreshold = 10;
+         function update() {
+           var viewer = context.container().select('.photoviewer');
+           var selected = viewer.empty() ? undefined : viewer.datum();
+           var z = ~~context.map().zoom();
+           var showMarkers = z >= minMarkerZoom;
+           var showViewfields = z >= minViewfieldZoom;
+           var service = getService();
+           var sequences = [];
+           var bubbles = [];

 
 

-         function isBuilding(entity, graph) {
-           if (entity.type !== 'way' || entity.geometry(graph) !== 'area') return false;
-           return entity.tags.building && entity.tags.building !== 'no';
-         }
+           if (context.photos().showsPanoramic()) {
+             sequences = service ? service.sequences(projection) : [];
+             bubbles = service && showMarkers ? service.bubbles(projection) : [];
+             sequences = filterSequences(sequences);
+             bubbles = filterBubbles(bubbles);
+           }

 
 

-         var validation = function checkUnsquareWay(entity, graph) {
-           if (!isBuilding(entity, graph)) return []; // don't flag ways marked as physically unsquare
+           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
+             return d.properties.key;
+           }); // exit

 
 

-           if (entity.tags.nonsquare === 'yes') return [];
-           var isClosed = entity.isClosed();
-           if (!isClosed) return []; // this building has bigger problems
-           // don't flag ways with lots of nodes since they are likely detail-mapped
+           traces.exit().remove(); // enter/update

 
 

-           var nodes = graph.childNodes(entity).slice(); // shallow copy
+           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
+           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(bubbles, function (d) {
+             // force reenter once bubbles are attached to a sequence
+             return d.key + (d.sequenceKey ? 'v1' : 'v0');
+           }); // exit

 
 

-           if (nodes.length > nodeThreshold + 1) return []; // +1 because closing node appears twice
-           // ignore if not all nodes are fully downloaded
+           groups.exit().remove(); // enter

 
 

-           var osm = services.osm;
-           if (!osm || nodes.some(function (node) {
-             return !osm.isDataLoaded(node.loc);
-           })) return []; // don't flag connected ways to avoid unresolvable unsquare loops
+           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
+           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update

 
 

-           var hasConnectedSquarableWays = nodes.some(function (node) {
-             return graph.parentWays(node).some(function (way) {
-               if (way.id === entity.id) return false;
-               if (isBuilding(way, graph)) return true;
-               return graph.parentRelations(way).some(function (parentRelation) {
-                 return parentRelation.isMultipolygon() && parentRelation.tags.building && parentRelation.tags.building !== 'no';
-               });
-             });
-           });
-           if (hasConnectedSquarableWays) return []; // user-configurable square threshold
+           var markers = groups.merge(groupsEnter).sort(function (a, b) {
+             return a === selected ? 1 : b === selected ? -1 : b.loc[1] - a.loc[1];
+           }).attr('transform', transform).select('.viewfield-scale');
+           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
+           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
+           viewfields.exit().remove(); // viewfields may or may not be drawn...
+           // but if they are, draw below the circles

 
 

-           var storedDegreeThreshold = corePreferences('validate-square-degrees');
-           var degreeThreshold = isNaN(storedDegreeThreshold) ? DEFAULT_DEG_THRESHOLD : parseFloat(storedDegreeThreshold);
-           var points = nodes.map(function (node) {
-             return context.projection(node.loc);
-           });
-           if (!geoOrthoCanOrthogonalize(points, isClosed, epsilon, degreeThreshold, true)) return [];
-           var autoArgs; // don't allow autosquaring features linked to wikidata
+           viewfields.enter().insert('path', 'circle').attr('class', 'viewfield').attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', viewfieldPath);

 
 

-           if (!entity.tags.wikidata) {
-             // use same degree threshold as for detection
-             var autoAction = actionOrthogonalize(entity.id, context.projection, undefined, degreeThreshold);
-             autoAction.transitionable = false; // when autofixing, do it instantly
+           function viewfieldPath() {
+             var d = this.parentNode.__data__;

 
 

-             autoArgs = [autoAction, _t('operations.orthogonalize.annotation.feature', {
-               n: 1
-             })];
+             if (d.pano) {
+               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
+             } else {
+               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
+             }

            }
            }

+         }
+         /**
+          * drawImages()
+          * drawImages is the method that is returned (and that runs) every time 'svgStreetside()' is called.
+          * 'svgStreetside()' is called from index.js
+          */

 
 

-           return [new validationIssue({
-             type: type,
-             subtype: 'building',
-             severity: 'warning',
-             message: function message(context) {
-               var entity = context.hasEntity(this.entityIds[0]);
-               return entity ? _t.html('issues.unsquare_way.message', {
-                 feature: utilDisplayLabel(entity, context.graph())
-               }) : '';
-             },
-             reference: showReference,
-             entityIds: [entity.id],
-             hash: JSON.stringify(autoArgs !== undefined) + degreeThreshold,
-             dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
-                 icon: 'iD-operation-orthogonalize',
-                 title: _t.html('issues.fix.square_feature.title'),
-                 autoArgs: autoArgs,
-                 onClick: function onClick(context, completionHandler) {
-                   var entityId = this.issue.entityIds[0]; // use same degree threshold as for detection

 
 

-                   context.perform(actionOrthogonalize(entityId, context.projection, undefined, degreeThreshold), _t('operations.orthogonalize.annotation.feature', {
-                     n: 1
-                   })); // run after the squaring transition (currently 150ms)
+         function drawImages(selection) {
+           var enabled = svgStreetside.enabled;
+           var service = getService();
+           layer = selection.selectAll('.layer-streetside-images').data(service ? [0] : []);
+           layer.exit().remove();
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-streetside-images').style('display', enabled ? 'block' : 'none');
+           layerEnter.append('g').attr('class', 'sequences');
+           layerEnter.append('g').attr('class', 'markers');
+           layer = layerEnter.merge(layer);

 
 

-                   window.setTimeout(function () {
-                     completionHandler();
-                   }, 175);
-                 }
-               })
-               /*
-               new validationIssueFix({
-                   title: t.html('issues.fix.tag_as_unsquare.title'),
-                   onClick: function(context) {
-                       var entityId = this.issue.entityIds[0];
-                       var entity = context.entity(entityId);
-                       var tags = Object.assign({}, entity.tags);  // shallow copy
-                       tags.nonsquare = 'yes';
-                       context.perform(
-                           actionChangeTags(entityId, tags),
-                           t('issues.fix.tag_as_unsquare.annotation')
-                       );
-                   }
-               })
-               */
-               ];
+           if (enabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               update();
+               service.loadBubbles(projection);
+             } else {
+               editOff();

              }
              }

-           })];
+           }
+         }
+         /**
+          * drawImages.enabled().
+          */

 
 

-           function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unsquare_way.buildings.reference'));
+
+         drawImages.enabled = function (_) {
+           if (!arguments.length) return svgStreetside.enabled;
+           svgStreetside.enabled = _;
+
+           if (svgStreetside.enabled) {
+             showLayer();
+             context.photos().on('change.streetside', update);
+           } else {
+             hideLayer();
+             context.photos().on('change.streetside', null);

            }
            }

+
+           dispatch.call('change');
+           return this;

          };
          };

+         /**
+          * drawImages.supported().
+          */

 
 

-         validation.type = type;
-         return validation;
+
+         drawImages.supported = function () {
+           return !!getService();
+         };
+
+         init();
+         return drawImages;

        }
 
        }
 

-       var Validations = /*#__PURE__*/Object.freeze({
-               __proto__: null,
-               validationAlmostJunction: validationAlmostJunction,
-               validationCloseNodes: validationCloseNodes,
-               validationCrossingWays: validationCrossingWays,
-               validationDisconnectedWay: validationDisconnectedWay,
-               validationFormatting: validationFormatting,
-               validationHelpRequest: validationHelpRequest,
-               validationImpossibleOneway: validationImpossibleOneway,
-               validationIncompatibleSource: validationIncompatibleSource,
-               validationMaprules: validationMaprules,
-               validationMismatchedGeometry: validationMismatchedGeometry,
-               validationMissingRole: validationMissingRole,
-               validationMissingTag: validationMissingTag,
-               validationOutdatedTags: validationOutdatedTags,
-               validationPrivateData: validationPrivateData,
-               validationSuspiciousName: validationSuspiciousName,
-               validationUnsquareWay: validationUnsquareWay
-       });
+       function svgMapillaryImages(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-       function coreValidator(context) {
-         var dispatch$1 = dispatch('validated', 'focusedIssue');
-         var validator = utilRebind({}, dispatch$1, 'on');
-         var _rules = {};
-         var _disabledRules = {};
-         var _ignoredIssueIDs = {}; // issue.id -> true
+         var minZoom = 12;
+         var minMarkerZoom = 16;
+         var minViewfieldZoom = 18;
+         var layer = select(null);

 
 

-         var _baseCache = validationCache(); // issues before any user edits
+         var _mapillary;

 
 

+         function init() {
+           if (svgMapillaryImages.initialized) return; // run once

 
 

-         var _headCache = validationCache(); // issues after all user edits
+           svgMapillaryImages.enabled = false;
+           svgMapillaryImages.initialized = true;
+         }

 
 

+         function getService() {
+           if (services.mapillary && !_mapillary) {
+             _mapillary = services.mapillary;

 
 

-         var _validatedGraph = null;
+             _mapillary.event.on('loadedImages', throttledRedraw);
+           } else if (!services.mapillary && _mapillary) {
+             _mapillary = null;
+           }

 
 

-         var _deferred = new Set(); //
-         // initialize the validator rulesets
-         //
+           return _mapillary;
+         }

 
 

+         function showLayer() {
+           var service = getService();
+           if (!service) return;
+           editOn();
+           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
+             dispatch.call('change');
+           });
+         }

 
 

-         validator.init = function () {
-           Object.values(Validations).forEach(function (validation) {
-             if (typeof validation !== 'function') return;
-             var fn = validation(context);
-             var key = fn.type;
-             _rules[key] = fn;
+         function hideLayer() {
+           throttledRedraw.cancel();
+           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
+         }
+
+         function editOn() {
+           layer.style('display', 'block');
+         }
+
+         function editOff() {
+           layer.selectAll('.viewfield-group').remove();
+           layer.style('display', 'none');
+         }
+
+         function click(d3_event, image) {
+           var service = getService();
+           if (!service) return;
+           service.ensureViewerLoaded(context).then(function () {
+             service.selectImage(context, image.id).showViewer(context);

            });
            });

-           var disabledRules = corePreferences('validate-disabledRules');
+           context.map().centerEase(image.loc);
+         }

 
 

-           if (disabledRules) {
-             disabledRules.split(',').forEach(function (key) {
-               _disabledRules[key] = true;
-             });
+         function mouseover(d3_event, image) {
+           var service = getService();
+           if (service) service.setStyles(context, image);
+         }
+
+         function mouseout() {
+           var service = getService();
+           if (service) service.setStyles(context, null);
+         }
+
+         function transform(d) {
+           var t = svgPointTransform(projection)(d);
+
+           if (d.ca) {
+             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';

            }
            }

-         };

 
 

-         function reset(resetIgnored) {
-           Array.from(_deferred).forEach(function (handle) {
-             window.cancelIdleCallback(handle);
+           return t;
+         }

 
 

-             _deferred["delete"](handle);
-           }); // clear caches
+         function filterImages(images) {
+           var showsPano = context.photos().showsPanoramic();
+           var showsFlat = context.photos().showsFlat();
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();

 
 

-           if (resetIgnored) _ignoredIssueIDs = {};
-           _baseCache = validationCache();
-           _headCache = validationCache();
-           _validatedGraph = null;
-         } //
-         // clear caches, called whenever iD resets after a save
-         //
+           if (!showsPano || !showsFlat) {
+             images = images.filter(function (image) {
+               if (image.is_pano) return showsPano;
+               return showsFlat;
+             });
+           }

 
 

+           if (fromDate) {
+             images = images.filter(function (image) {
+               return new Date(image.captured_at).getTime() >= new Date(fromDate).getTime();
+             });
+           }

 
 

-         validator.reset = function () {
-           reset(true);
-         };
+           if (toDate) {
+             images = images.filter(function (image) {
+               return new Date(image.captured_at).getTime() <= new Date(toDate).getTime();
+             });
+           }

 
 

-         validator.resetIgnoredIssues = function () {
-           _ignoredIssueIDs = {}; // reload UI
+           return images;
+         }

 
 

-           dispatch$1.call('validated');
-         }; // must update issues when the user changes the unsquare thereshold
+         function filterSequences(sequences) {
+           var showsPano = context.photos().showsPanoramic();
+           var showsFlat = context.photos().showsFlat();
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();

 
 

+           if (!showsPano || !showsFlat) {
+             sequences = sequences.filter(function (sequence) {
+               if (sequence.properties.hasOwnProperty('is_pano')) {
+                 if (sequence.properties.is_pano) return showsPano;
+                 return showsFlat;
+               }

 
 

-         validator.reloadUnsquareIssues = function () {
-           reloadUnsquareIssues(_headCache, context.graph());
-           reloadUnsquareIssues(_baseCache, context.history().base());
-           dispatch$1.call('validated');
-         };
+               return false;
+             });
+           }

 
 

-         function reloadUnsquareIssues(cache, graph) {
-           var checkUnsquareWay = _rules.unsquare_way;
-           if (typeof checkUnsquareWay !== 'function') return; // uncache existing
+           if (fromDate) {
+             sequences = sequences.filter(function (sequence) {
+               return new Date(sequence.properties.captured_at).getTime() >= new Date(fromDate).getTime().toString();
+             });
+           }

 
 

-           cache.uncacheIssuesOfType('unsquare_way');
-           var buildings = context.history().tree().intersects(geoExtent([-180, -90], [180, 90]), graph) // everywhere
-           .filter(function (entity) {
-             return entity.type === 'way' && entity.tags.building && entity.tags.building !== 'no';
-           }); // rerun for all buildings
+           if (toDate) {
+             sequences = sequences.filter(function (sequence) {
+               return new Date(sequence.properties.captured_at).getTime() <= new Date(toDate).getTime().toString();
+             });
+           }

 
 

-           buildings.forEach(function (entity) {
-             var detected = checkUnsquareWay(entity, graph);
-             if (detected.length !== 1) return;
-             var issue = detected[0];
+           return sequences;
+         }

 
 

-             if (!cache.issuesByEntityID[entity.id]) {
-               cache.issuesByEntityID[entity.id] = new Set();
-             }
+         function update() {
+           var z = ~~context.map().zoom();
+           var showMarkers = z >= minMarkerZoom;
+           var showViewfields = z >= minViewfieldZoom;
+           var service = getService();
+           var sequences = service ? service.sequences(projection) : [];
+           var images = service && showMarkers ? service.images(projection) : [];
+           images = filterImages(images);
+           sequences = filterSequences(sequences);
+           service.filterViewer(context);
+           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
+             return d.properties.id;
+           }); // exit

 
 

-             cache.issuesByEntityID[entity.id].add(issue.id);
-             cache.issuesByIssueID[issue.id] = issue;
-           });
-         } // options = {
-         //     what: 'all',     // 'all' or 'edited'
-         //     where: 'all',   // 'all' or 'visible'
-         //     includeIgnored: false   // true, false, or 'only'
-         //     includeDisabledRules: false   // true, false, or 'only'
-         // };
+           traces.exit().remove(); // enter/update

 
 

+           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
+           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(images, function (d) {
+             return d.id;
+           }); // exit

 
 

-         validator.getIssues = function (options) {
-           var opts = Object.assign({
-             what: 'all',
-             where: 'all',
-             includeIgnored: false,
-             includeDisabledRules: false
-           }, options);
-           var issues = Object.values(_headCache.issuesByIssueID);
-           var view = context.map().extent();
-           return issues.filter(function (issue) {
-             if (!issue) return false;
-             if (opts.includeDisabledRules === 'only' && !_disabledRules[issue.type]) return false;
-             if (!opts.includeDisabledRules && _disabledRules[issue.type]) return false;
-             if (opts.includeIgnored === 'only' && !_ignoredIssueIDs[issue.id]) return false;
-             if (!opts.includeIgnored && _ignoredIssueIDs[issue.id]) return false; // Sanity check:  This issue may be for an entity that not longer exists.
-             // If we detect this, uncache and return false so it is not included..
+           groups.exit().remove(); // enter

 
 

-             var entityIds = issue.entityIds || [];
+           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
+           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update

 
 

-             for (var i = 0; i < entityIds.length; i++) {
-               var entityId = entityIds[i];
+           var markers = groups.merge(groupsEnter).sort(function (a, b) {
+             return b.loc[1] - a.loc[1]; // sort Y
+           }).attr('transform', transform).select('.viewfield-scale');
+           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
+           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
+           viewfields.exit().remove();
+           viewfields.enter() // viewfields may or may not be drawn...
+           .insert('path', 'circle') // but if they are, draw below the circles
+           .attr('class', 'viewfield').classed('pano', function () {
+             return this.parentNode.__data__.is_pano;
+           }).attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', viewfieldPath);

 
 

-               if (!context.hasEntity(entityId)) {
-                 delete _headCache.issuesByEntityID[entityId];
-                 delete _headCache.issuesByIssueID[issue.id];
-                 return false;
-               }
+           function viewfieldPath() {
+             if (this.parentNode.__data__.is_pano) {
+               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
+             } else {
+               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';

              }
              }

+           }
+         }

 
 

-             if (opts.what === 'edited' && _baseCache.issuesByIssueID[issue.id]) return false;
+         function drawImages(selection) {
+           var enabled = svgMapillaryImages.enabled;
+           var service = getService();
+           layer = selection.selectAll('.layer-mapillary').data(service ? [0] : []);
+           layer.exit().remove();
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-mapillary').style('display', enabled ? 'block' : 'none');
+           layerEnter.append('g').attr('class', 'sequences');
+           layerEnter.append('g').attr('class', 'markers');
+           layer = layerEnter.merge(layer);

 
 

-             if (opts.where === 'visible') {
-               var extent = issue.extent(context.graph());
-               if (!view.intersects(extent)) return false;
+           if (enabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               update();
+               service.loadImages(projection);
+             } else {
+               editOff();

              }
              }

+           }
+         }

 
 

-             return true;
-           });
+         drawImages.enabled = function (_) {
+           if (!arguments.length) return svgMapillaryImages.enabled;
+           svgMapillaryImages.enabled = _;
+
+           if (svgMapillaryImages.enabled) {
+             showLayer();
+             context.photos().on('change.mapillary_images', update);
+           } else {
+             hideLayer();
+             context.photos().on('change.mapillary_images', null);
+           }
+
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         validator.getResolvedIssues = function () {
-           var baseIssues = Object.values(_baseCache.issuesByIssueID);
-           return baseIssues.filter(function (issue) {
-             return !_headCache.issuesByIssueID[issue.id];
-           });
+         drawImages.supported = function () {
+           return !!getService();

          };
 
          };
 

-         validator.focusIssue = function (issue) {
-           var extent = issue.extent(context.graph());
+         init();
+         return drawImages;
+       }

 
 

-           if (extent) {
-             var setZoom = Math.max(context.map().zoom(), 19);
-             context.map().unobscuredCenterZoomEase(extent.center(), setZoom); // select the first entity
+       function svgMapillaryPosition(projection, context) {
+         var throttledRedraw = throttle(function () {
+           update();
+         }, 1000);

 
 

-             if (issue.entityIds && issue.entityIds.length) {
-               window.setTimeout(function () {
-                 var ids = issue.entityIds;
-                 context.enter(modeSelect(context, [ids[0]]));
-                 dispatch$1.call('focusedIssue', this, issue);
-               }, 250); // after ease
-             }
-           }
-         };
+         var minZoom = 12;
+         var minViewfieldZoom = 18;
+         var layer = select(null);

 
 

-         validator.getIssuesBySeverity = function (options) {
-           var groups = utilArrayGroupBy(validator.getIssues(options), 'severity');
-           groups.error = groups.error || [];
-           groups.warning = groups.warning || [];
-           return groups;
-         }; // show some issue types in a particular order
+         var _mapillary;

 
 

+         var viewerCompassAngle;

 
 

-         var orderedIssueTypes = [// flag missing data first
-         'missing_tag', 'missing_role', // then flag identity issues
-         'outdated_tags', 'mismatched_geometry', // flag geometry issues where fixing them might solve connectivity issues
-         'crossing_ways', 'almost_junction', // then flag connectivity issues
-         'disconnected_way', 'impossible_oneway']; // returns the issues that the given entity IDs have in common, matching the given options
+         function init() {
+           if (svgMapillaryPosition.initialized) return; // run once

 
 

-         validator.getSharedEntityIssues = function (entityIDs, options) {
-           var cache = _headCache; // gather the issues that are common to all the entities
+           svgMapillaryPosition.initialized = true;
+         }

 
 

-           var issueIDs = entityIDs.reduce(function (acc, entityID) {
-             var entityIssueIDs = cache.issuesByEntityID[entityID] || new Set();
+         function getService() {
+           if (services.mapillary && !_mapillary) {
+             _mapillary = services.mapillary;

 
 

-             if (!acc) {
-               return new Set(entityIssueIDs);
-             }
+             _mapillary.event.on('imageChanged', throttledRedraw);

 
 

-             return new Set(_toConsumableArray(acc).filter(function (elem) {
-               return entityIssueIDs.has(elem);
-             }));
-           }, null) || [];
-           var opts = options || {};
-           return Array.from(issueIDs).map(function (id) {
-             return cache.issuesByIssueID[id];
-           }).filter(function (issue) {
-             if (!issue) return false;
-             if (opts.includeDisabledRules === 'only' && !_disabledRules[issue.type]) return false;
-             if (!opts.includeDisabledRules && _disabledRules[issue.type]) return false;
-             if (opts.includeIgnored === 'only' && !_ignoredIssueIDs[issue.id]) return false;
-             if (!opts.includeIgnored && _ignoredIssueIDs[issue.id]) return false;
-             return true;
-           }).sort(function (issue1, issue2) {
-             if (issue1.type === issue2.type) {
-               // issues of the same type, sort deterministically
-               return issue1.id < issue2.id ? -1 : 1;
-             }
+             _mapillary.event.on('bearingChanged', function (e) {
+               viewerCompassAngle = e.bearing;
+               if (context.map().isTransformed()) return;
+               layer.selectAll('.viewfield-group.currentView').filter(function (d) {
+                 return d.is_pano;
+               }).attr('transform', transform);
+             });
+           } else if (!services.mapillary && _mapillary) {
+             _mapillary = null;
+           }

 
 

-             var index1 = orderedIssueTypes.indexOf(issue1.type);
-             var index2 = orderedIssueTypes.indexOf(issue2.type);
+           return _mapillary;
+         }

 
 

-             if (index1 !== -1 && index2 !== -1) {
-               // both issue types have explicit sort orders
-               return index1 - index2;
-             } else if (index1 === -1 && index2 === -1) {
-               // neither issue type has an explicit sort order, sort by type
-               return issue1.type < issue2.type ? -1 : 1;
-             } else {
-               // order explicit types before everything else
-               return index1 !== -1 ? -1 : 1;
-             }
-           });
-         };
+         function editOn() {
+           layer.style('display', 'block');
+         }

 
 

-         validator.getEntityIssues = function (entityID, options) {
-           return validator.getSharedEntityIssues([entityID], options);
-         };
+         function editOff() {
+           layer.selectAll('.viewfield-group').remove();
+           layer.style('display', 'none');
+         }

 
 

-         validator.getRuleKeys = function () {
-           return Object.keys(_rules);
-         };
+         function transform(d) {
+           var t = svgPointTransform(projection)(d);

 
 

-         validator.isRuleEnabled = function (key) {
-           return !_disabledRules[key];
-         };
+           if (d.is_pano && viewerCompassAngle !== null && isFinite(viewerCompassAngle)) {
+             t += ' rotate(' + Math.floor(viewerCompassAngle) + ',0,0)';
+           } else if (d.ca) {
+             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';
+           }

 
 

-         validator.toggleRule = function (key) {
-           if (_disabledRules[key]) {
-             delete _disabledRules[key];
+           return t;
+         }
+
+         function update() {
+           var z = ~~context.map().zoom();
+           var showViewfields = z >= minViewfieldZoom;
+           var service = getService();
+           var image = service && service.getActiveImage();
+           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(image ? [image] : [], function (d) {
+             return d.id;
+           }); // exit
+
+           groups.exit().remove(); // enter
+
+           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group currentView highlighted');
+           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+
+           var markers = groups.merge(groupsEnter).attr('transform', transform).select('.viewfield-scale');
+           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
+           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
+           viewfields.exit().remove();
+           viewfields.enter().insert('path', 'circle').attr('class', 'viewfield').attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z');
+         }
+
+         function drawImages(selection) {
+           var service = getService();
+           layer = selection.selectAll('.layer-mapillary-position').data(service ? [0] : []);
+           layer.exit().remove();
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-mapillary-position');
+           layerEnter.append('g').attr('class', 'markers');
+           layer = layerEnter.merge(layer);
+
+           if (service && ~~context.map().zoom() >= minZoom) {
+             editOn();
+             update();

            } else {
            } else {

-             _disabledRules[key] = true;
+             editOff();

            }
            }

+         }

 
 

-           corePreferences('validate-disabledRules', Object.keys(_disabledRules).join(','));
-           validator.validate();
+         drawImages.enabled = function () {
+           update();
+           return this;

          };
 
          };
 

-         validator.disableRules = function (keys) {
-           _disabledRules = {};
-           keys.forEach(function (k) {
-             _disabledRules[k] = true;
-           });
-           corePreferences('validate-disabledRules', Object.keys(_disabledRules).join(','));
-           validator.validate();
+         drawImages.supported = function () {
+           return !!getService();

          };
 
          };
 

-         validator.ignoreIssue = function (id) {
-           _ignoredIssueIDs[id] = true;
-         }; //
-         // Run validation on a single entity for the given graph
-         //
+         init();
+         return drawImages;
+       }

 
 

+       function svgMapillarySigns(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-         function validateEntity(entity, graph) {
-           var entityIssues = []; // runs validation and appends resulting issues
+         var minZoom = 12;
+         var layer = select(null);

 
 

-           function runValidation(key) {
-             var fn = _rules[key];
+         var _mapillary;

 
 

-             if (typeof fn !== 'function') {
-               console.error('no such validation rule = ' + key); // eslint-disable-line no-console
+         function init() {
+           if (svgMapillarySigns.initialized) return; // run once

 
 

-               return;
-             }
+           svgMapillarySigns.enabled = false;
+           svgMapillarySigns.initialized = true;
+         }

 
 

-             var detected = fn(entity, graph);
-             entityIssues = entityIssues.concat(detected);
-           } // run all rules
+         function getService() {
+           if (services.mapillary && !_mapillary) {
+             _mapillary = services.mapillary;

 
 

+             _mapillary.event.on('loadedSigns', throttledRedraw);
+           } else if (!services.mapillary && _mapillary) {
+             _mapillary = null;
+           }

 
 

-           Object.keys(_rules).forEach(runValidation);
-           return entityIssues;
+           return _mapillary;

          }
 
          }
 

-         function entityIDsToValidate(entityIDs, graph) {
-           var processedIDs = new Set();
-           return entityIDs.reduce(function (acc, entityID) {
-             // keep redundancy check separate from `acc` because an `entityID`
-             // could have been added to `acc` as a related entity through an earlier pass
-             if (processedIDs.has(entityID)) return acc;
-             processedIDs.add(entityID);
-             var entity = graph.hasEntity(entityID);
-             if (!entity) return acc;
-             acc.add(entityID);
-             var checkParentRels = [entity];
+         function showLayer() {
+           var service = getService();
+           if (!service) return;
+           service.loadSignResources(context);
+           editOn();
+         }

 
 

-             if (entity.type === 'node') {
-               graph.parentWays(entity).forEach(function (parentWay) {
-                 acc.add(parentWay.id); // include parent ways
+         function hideLayer() {
+           throttledRedraw.cancel();
+           editOff();
+         }

 
 

-                 checkParentRels.push(parentWay);
-               });
-             } else if (entity.type === 'relation') {
-               entity.members.forEach(function (member) {
-                 acc.add(member.id); // include members
-               });
-             } else if (entity.type === 'way') {
-               entity.nodes.forEach(function (nodeID) {
-                 acc.add(nodeID); // include child nodes
+         function editOn() {
+           layer.style('display', 'block');
+         }

 
 

-                 graph._parentWays[nodeID].forEach(function (wayID) {
-                   acc.add(wayID); // include connected ways
-                 });
-               });
-             }
+         function editOff() {
+           layer.selectAll('.icon-sign').remove();
+           layer.style('display', 'none');
+         }
+
+         function click(d3_event, d) {
+           var service = getService();
+           if (!service) return;
+           context.map().centerEase(d.loc);
+           var selectedImageId = service.getActiveImage() && service.getActiveImage().id;
+           service.getDetections(d.id).then(function (detections) {
+             if (detections.length) {
+               var imageId = detections[0].image.id;

 
 

-             checkParentRels.forEach(function (entity) {
-               // include parent relations
-               if (entity.type !== 'relation') {
-                 // but not super-relations
-                 graph.parentRelations(entity).forEach(function (parentRelation) {
-                   acc.add(parentRelation.id);
+               if (imageId === selectedImageId) {
+                 service.highlightDetection(detections[0]).selectImage(context, imageId);
+               } else {
+                 service.ensureViewerLoaded(context).then(function () {
+                   service.highlightDetection(detections[0]).selectImage(context, imageId).showViewer(context);

                  });
                }
                  });
                }

+             }
+           });
+         }
+
+         function filterData(detectedFeatures) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+
+           if (fromDate) {
+             var fromTimestamp = new Date(fromDate).getTime();
+             detectedFeatures = detectedFeatures.filter(function (feature) {
+               return new Date(feature.last_seen_at).getTime() >= fromTimestamp;

              });
              });

-             return acc;
-           }, new Set());
-         } //
-         // Run validation for several entities, supplied `entityIDs`,
-         // against `graph` for the given `cache`
-         //
+           }

 
 

+           if (toDate) {
+             var toTimestamp = new Date(toDate).getTime();
+             detectedFeatures = detectedFeatures.filter(function (feature) {
+               return new Date(feature.first_seen_at).getTime() <= toTimestamp;
+             });
+           }

 
 

-         function validateEntities(entityIDs, graph, cache) {
-           // clear caches for existing issues related to these entities
-           entityIDs.forEach(cache.uncacheEntityID); // detect new issues and update caches
+           return detectedFeatures;
+         }

 
 

-           entityIDs.forEach(function (entityID) {
-             var entity = graph.hasEntity(entityID); // don't validate deleted entities
+         function update() {
+           var service = getService();
+           var data = service ? service.signs(projection) : [];
+           data = filterData(data);
+           var transform = svgPointTransform(projection);
+           var signs = layer.selectAll('.icon-sign').data(data, function (d) {
+             return d.id;
+           }); // exit
+
+           signs.exit().remove(); // enter

 
 

-             if (!entity) return;
-             var issues = validateEntity(entity, graph);
-             cache.cacheIssues(issues);
+           var enter = signs.enter().append('g').attr('class', 'icon-sign icon-detected').on('click', click);
+           enter.append('use').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px').attr('xlink:href', function (d) {
+             return '#' + d.value;

            });
            });

-         } //
-         // Validates anything that has changed since the last time it was run.
-         // Also updates the "validatedGraph" to be the current graph
-         // and dispatches a `validated` event when finished.
-         //
+           enter.append('rect').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px'); // update

 
 

+           signs.merge(enter).attr('transform', transform);
+         }

 
 

-         validator.validate = function () {
-           var currGraph = context.graph();
-           _validatedGraph = _validatedGraph || context.history().base();
+         function drawSigns(selection) {
+           var enabled = svgMapillarySigns.enabled;
+           var service = getService();
+           layer = selection.selectAll('.layer-mapillary-signs').data(service ? [0] : []);
+           layer.exit().remove();
+           layer = layer.enter().append('g').attr('class', 'layer-mapillary-signs layer-mapillary-detections').style('display', enabled ? 'block' : 'none').merge(layer);

 
 

-           if (currGraph === _validatedGraph) {
-             dispatch$1.call('validated');
-             return;
+           if (enabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               update();
+               service.loadSigns(projection);
+               service.showSignDetections(true);
+             } else {
+               editOff();
+             }
+           } else if (service) {
+             service.showSignDetections(false);

            }
            }

+         }

 
 

-           var oldGraph = _validatedGraph;
-           var difference = coreDifference(oldGraph, currGraph);
-           _validatedGraph = currGraph;
-           var createdAndModifiedEntityIDs = difference.extantIDs(true); // created/modified (true = w/relation members)
+         drawSigns.enabled = function (_) {
+           if (!arguments.length) return svgMapillarySigns.enabled;
+           svgMapillarySigns.enabled = _;

 
 

-           var entityIDsToCheck = entityIDsToValidate(createdAndModifiedEntityIDs, currGraph); // check modified and deleted entities against the old graph in order to update their related entities
-           // (e.g. deleting the only highway connected to a road should create a disconnected highway issue)
+           if (svgMapillarySigns.enabled) {
+             showLayer();
+             context.photos().on('change.mapillary_signs', update);
+           } else {
+             hideLayer();
+             context.photos().on('change.mapillary_signs', null);
+           }

 
 

-           var modifiedAndDeletedEntityIDs = difference.deleted().concat(difference.modified()).map(function (entity) {
-             return entity.id;
-           });
-           var entityIDsToCheckForOldGraph = entityIDsToValidate(modifiedAndDeletedEntityIDs, oldGraph); // concat the sets
+           dispatch.call('change');
+           return this;
+         };

 
 

-           entityIDsToCheckForOldGraph.forEach(entityIDsToCheck.add, entityIDsToCheck);
-           validateEntities(entityIDsToCheck, context.graph(), _headCache);
-           dispatch$1.call('validated');
+         drawSigns.supported = function () {
+           return !!getService();

          };
 
          };
 

-         context.history().on('reset.validator', function () {
-           // cached issues aren't valid any longer if the history has been reset
-           reset(false);
-           validator.validate();
-         }); // WHEN TO RUN VALIDATION:
-         // When graph changes:
+         init();
+         return drawSigns;
+       }

 
 

-         context.history().on('restore.validator', validator.validate) // restore saved history
-         .on('undone.validator', validator.validate) // undo
-         .on('redone.validator', validator.validate); // redo
-         // but not on 'change' (e.g. while drawing)
-         // When user changes editing modes:
+       function svgMapillaryMapFeatures(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-         context.on('exit.validator', validator.validate); // When merging fetched data:
+         var minZoom = 12;
+         var layer = select(null);

 
 

-         context.history().on('merge.validator', function (entities) {
-           if (!entities) return;
-           var handle = window.requestIdleCallback(function () {
-             var entityIDs = entities.map(function (entity) {
-               return entity.id;
-             });
-             var headGraph = context.graph();
-             validateEntities(entityIDsToValidate(entityIDs, headGraph), headGraph, _headCache);
-             var baseGraph = context.history().base();
-             validateEntities(entityIDsToValidate(entityIDs, baseGraph), baseGraph, _baseCache);
-             dispatch$1.call('validated');
-           });
+         var _mapillary;

 
 

-           _deferred.add(handle);
-         });
-         return validator;
-       }
+         function init() {
+           if (svgMapillaryMapFeatures.initialized) return; // run once

 
 

-       function validationCache() {
-         var cache = {
-           issuesByIssueID: {},
-           // issue.id -> issue
-           issuesByEntityID: {} // entity.id -> set(issue.id)
+           svgMapillaryMapFeatures.enabled = false;
+           svgMapillaryMapFeatures.initialized = true;
+         }

 
 

-         };
+         function getService() {
+           if (services.mapillary && !_mapillary) {
+             _mapillary = services.mapillary;

 
 

-         cache.cacheIssues = function (issues) {
-           issues.forEach(function (issue) {
-             var entityIds = issue.entityIds || [];
-             entityIds.forEach(function (entityId) {
-               if (!cache.issuesByEntityID[entityId]) {
-                 cache.issuesByEntityID[entityId] = new Set();
-               }
+             _mapillary.event.on('loadedMapFeatures', throttledRedraw);
+           } else if (!services.mapillary && _mapillary) {
+             _mapillary = null;
+           }

 
 

-               cache.issuesByEntityID[entityId].add(issue.id);
-             });
-             cache.issuesByIssueID[issue.id] = issue;
-           });
-         };
+           return _mapillary;
+         }

 
 

-         cache.uncacheIssue = function (issue) {
-           // When multiple entities are involved (e.g. crossing_ways),
-           // remove this issue from the other entity caches too..
-           var entityIds = issue.entityIds || [];
-           entityIds.forEach(function (entityId) {
-             if (cache.issuesByEntityID[entityId]) {
-               cache.issuesByEntityID[entityId]["delete"](issue.id);
-             }
-           });
-           delete cache.issuesByIssueID[issue.id];
-         };
+         function showLayer() {
+           var service = getService();
+           if (!service) return;
+           service.loadObjectResources(context);
+           editOn();
+         }

 
 

-         cache.uncacheIssues = function (issues) {
-           issues.forEach(cache.uncacheIssue);
-         };
+         function hideLayer() {
+           throttledRedraw.cancel();
+           editOff();
+         }

 
 

-         cache.uncacheIssuesOfType = function (type) {
-           var issuesOfType = Object.values(cache.issuesByIssueID).filter(function (issue) {
-             return issue.type === type;
-           });
-           cache.uncacheIssues(issuesOfType);
-         }; //
-         // Remove a single entity and all its related issues from the caches
-         //
+         function editOn() {
+           layer.style('display', 'block');
+         }

 
 

+         function editOff() {
+           layer.selectAll('.icon-map-feature').remove();
+           layer.style('display', 'none');
+         }

 
 

-         cache.uncacheEntityID = function (entityID) {
-           var issueIDs = cache.issuesByEntityID[entityID];
-           if (!issueIDs) return;
-           issueIDs.forEach(function (issueID) {
-             var issue = cache.issuesByIssueID[issueID];
+         function click(d3_event, d) {
+           var service = getService();
+           if (!service) return;
+           context.map().centerEase(d.loc);
+           var selectedImageId = service.getActiveImage() && service.getActiveImage().id;
+           service.getDetections(d.id).then(function (detections) {
+             if (detections.length) {
+               var imageId = detections[0].image.id;

 
 

-             if (issue) {
-               cache.uncacheIssue(issue);
-             } else {
-               delete cache.issuesByIssueID[issueID];
+               if (imageId === selectedImageId) {
+                 service.highlightDetection(detections[0]).selectImage(context, imageId);
+               } else {
+                 service.ensureViewerLoaded(context).then(function () {
+                   service.highlightDetection(detections[0]).selectImage(context, imageId).showViewer(context);
+                 });
+               }

              }
            });
              }
            });

-           delete cache.issuesByEntityID[entityID];
-         };
-
-         return cache;
-       }
+         }

 
 

-       function coreUploader(context) {
-         var dispatch$1 = dispatch( // Start and end events are dispatched exactly once each per legitimate outside call to `save`
-         'saveStarted', // dispatched as soon as a call to `save` has been deemed legitimate
-         'saveEnded', // dispatched after the result event has been dispatched
-         'willAttemptUpload', // dispatched before the actual upload call occurs, if it will
-         'progressChanged', // Each save results in one of these outcomes:
-         'resultNoChanges', // upload wasn't attempted since there were no edits
-         'resultErrors', // upload failed due to errors
-         'resultConflicts', // upload failed due to data conflicts
-         'resultSuccess' // upload completed without errors
-         );
-         var _isSaving = false;
-         var _conflicts = [];
-         var _errors = [];
+         function filterData(detectedFeatures) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();

 
 

-         var _origChanges;
+           if (fromDate) {
+             detectedFeatures = detectedFeatures.filter(function (feature) {
+               return new Date(feature.last_seen_at).getTime() >= new Date(fromDate).getTime();
+             });
+           }

 
 

-         var _discardTags = {};
-         _mainFileFetcher.get('discarded').then(function (d) {
-           _discardTags = d;
-         })["catch"](function () {
-           /* ignore */
-         });
-         var uploader = utilRebind({}, dispatch$1, 'on');
+           if (toDate) {
+             detectedFeatures = detectedFeatures.filter(function (feature) {
+               return new Date(feature.first_seen_at).getTime() <= new Date(toDate).getTime();
+             });
+           }

 
 

-         uploader.isSaving = function () {
-           return _isSaving;
-         };
+           return detectedFeatures;
+         }

 
 

-         uploader.save = function (changeset, tryAgain, checkConflicts) {
-           // Guard against accidentally entering save code twice - #4641
-           if (_isSaving && !tryAgain) {
-             return;
-           }
+         function update() {
+           var service = getService();
+           var data = service ? service.mapFeatures(projection) : [];
+           data = filterData(data);
+           var transform = svgPointTransform(projection);
+           var mapFeatures = layer.selectAll('.icon-map-feature').data(data, function (d) {
+             return d.id;
+           }); // exit

 
 

-           var osm = context.connection();
-           if (!osm) return; // If user somehow got logged out mid-save, try to reauthenticate..
-           // This can happen if they were logged in from before, but the tokens are no longer valid.
+           mapFeatures.exit().remove(); // enter

 
 

-           if (!osm.authenticated()) {
-             osm.authenticate(function (err) {
-               if (!err) {
-                 uploader.save(changeset, tryAgain, checkConflicts); // continue where we left off..
-               }
-             });
-             return;
-           }
+           var enter = mapFeatures.enter().append('g').attr('class', 'icon-map-feature icon-detected').on('click', click);
+           enter.append('title').text(function (d) {
+             var id = d.value.replace(/--/g, '.').replace(/-/g, '_');
+             return _t('mapillary_map_features.' + id);
+           });
+           enter.append('use').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px').attr('xlink:href', function (d) {
+             if (d.value === 'object--billboard') {
+               // no billboard icon right now, so use the advertisement icon
+               return '#object--sign--advertisement';
+             }

 
 

-           if (!_isSaving) {
-             _isSaving = true;
-             dispatch$1.call('saveStarted', this);
-           }
+             return '#' + d.value;
+           });
+           enter.append('rect').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px'); // update

 
 

-           var history = context.history();
-           _conflicts = [];
-           _errors = []; // Store original changes, in case user wants to download them as an .osc file
+           mapFeatures.merge(enter).attr('transform', transform);
+         }

 
 

-           _origChanges = history.changes(actionDiscardTags(history.difference(), _discardTags)); // First time, `history.perform` a no-op action.
-           // Any conflict resolutions will be done as `history.replace`
-           // Remember to pop this later if needed
+         function drawMapFeatures(selection) {
+           var enabled = svgMapillaryMapFeatures.enabled;
+           var service = getService();
+           layer = selection.selectAll('.layer-mapillary-map-features').data(service ? [0] : []);
+           layer.exit().remove();
+           layer = layer.enter().append('g').attr('class', 'layer-mapillary-map-features layer-mapillary-detections').style('display', enabled ? 'block' : 'none').merge(layer);

 
 

-           if (!tryAgain) {
-             history.perform(actionNoop());
-           } // Attempt a fast upload.. If there are conflicts, re-enter with `checkConflicts = true`
+           if (enabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               update();
+               service.loadMapFeatures(projection);
+               service.showFeatureDetections(true);
+             } else {
+               editOff();
+             }
+           } else if (service) {
+             service.showFeatureDetections(false);
+           }
+         }

 
 

+         drawMapFeatures.enabled = function (_) {
+           if (!arguments.length) return svgMapillaryMapFeatures.enabled;
+           svgMapillaryMapFeatures.enabled = _;

 
 

-           if (!checkConflicts) {
-             upload(changeset); // Do the full (slow) conflict check..
+           if (svgMapillaryMapFeatures.enabled) {
+             showLayer();
+             context.photos().on('change.mapillary_map_features', update);

            } else {
            } else {

-             performFullConflictCheck(changeset);
+             hideLayer();
+             context.photos().on('change.mapillary_map_features', null);

            }
            }

+
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         function performFullConflictCheck(changeset) {
-           var osm = context.connection();
-           if (!osm) return;
-           var history = context.history();
-           var localGraph = context.graph();
-           var remoteGraph = coreGraph(history.base(), true);
-           var summary = history.difference().summary();
-           var _toCheck = [];
+         drawMapFeatures.supported = function () {
+           return !!getService();
+         };

 
 

-           for (var i = 0; i < summary.length; i++) {
-             var item = summary[i];
+         init();
+         return drawMapFeatures;
+       }

 
 

-             if (item.changeType === 'modified') {
-               _toCheck.push(item.entity.id);
-             }
-           }
+       function svgOpenstreetcamImages(projection, context, dispatch) {
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-           var _toLoad = withChildNodes(_toCheck, localGraph);
+         var minZoom = 12;
+         var minMarkerZoom = 16;
+         var minViewfieldZoom = 18;
+         var layer = select(null);

 
 

-           var _loaded = {};
-           var _toLoadCount = 0;
-           var _toLoadTotal = _toLoad.length;
+         var _openstreetcam;

 
 

-           if (_toCheck.length) {
-             dispatch$1.call('progressChanged', this, _toLoadCount, _toLoadTotal);
+         function init() {
+           if (svgOpenstreetcamImages.initialized) return; // run once

 
 

-             _toLoad.forEach(function (id) {
-               _loaded[id] = false;
-             });
+           svgOpenstreetcamImages.enabled = false;
+           svgOpenstreetcamImages.initialized = true;
+         }

 
 

-             osm.loadMultiple(_toLoad, loaded);
-           } else {
-             upload(changeset);
+         function getService() {
+           if (services.openstreetcam && !_openstreetcam) {
+             _openstreetcam = services.openstreetcam;
+
+             _openstreetcam.event.on('loadedImages', throttledRedraw);
+           } else if (!services.openstreetcam && _openstreetcam) {
+             _openstreetcam = null;

            }
 
            }
 

-           return;
+           return _openstreetcam;
+         }

 
 

-           function withChildNodes(ids, graph) {
-             var s = new Set(ids);
-             ids.forEach(function (id) {
-               var entity = graph.entity(id);
-               if (entity.type !== 'way') return;
-               graph.childNodes(entity).forEach(function (child) {
-                 if (child.version !== undefined) {
-                   s.add(child.id);
-                 }
-               });
-             });
-             return Array.from(s);
-           } // Reload modified entities into an alternate graph and check for conflicts..
+         function showLayer() {
+           var service = getService();
+           if (!service) return;
+           editOn();
+           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
+             dispatch.call('change');
+           });
+         }

 
 

+         function hideLayer() {
+           throttledRedraw.cancel();
+           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
+         }

 
 

-           function loaded(err, result) {
-             if (_errors.length) return;
+         function editOn() {
+           layer.style('display', 'block');
+         }

 
 

-             if (err) {
-               _errors.push({
-                 msg: err.message || err.responseText,
-                 details: [_t('save.status_code', {
-                   code: err.status
-                 })]
-               });
+         function editOff() {
+           layer.selectAll('.viewfield-group').remove();
+           layer.style('display', 'none');
+         }

 
 

-               didResultInErrors();
-             } else {
-               var loadMore = [];
-               result.data.forEach(function (entity) {
-                 remoteGraph.replace(entity);
-                 _loaded[entity.id] = true;
-                 _toLoad = _toLoad.filter(function (val) {
-                   return val !== entity.id;
-                 });
-                 if (!entity.visible) return; // Because loadMultiple doesn't download /full like loadEntity,
-                 // need to also load children that aren't already being checked..
+         function click(d3_event, d) {
+           var service = getService();
+           if (!service) return;
+           service.ensureViewerLoaded(context).then(function () {
+             service.selectImage(context, d.key).showViewer(context);
+           });
+           context.map().centerEase(d.loc);
+         }

 
 

-                 var i, id;
+         function mouseover(d3_event, d) {
+           var service = getService();
+           if (service) service.setStyles(context, d);
+         }

 
 

-                 if (entity.type === 'way') {
-                   for (i = 0; i < entity.nodes.length; i++) {
-                     id = entity.nodes[i];
+         function mouseout() {
+           var service = getService();
+           if (service) service.setStyles(context, null);
+         }

 
 

-                     if (_loaded[id] === undefined) {
-                       _loaded[id] = false;
-                       loadMore.push(id);
-                     }
-                   }
-                 } else if (entity.type === 'relation' && entity.isMultipolygon()) {
-                   for (i = 0; i < entity.members.length; i++) {
-                     id = entity.members[i].id;
+         function transform(d) {
+           var t = svgPointTransform(projection)(d);

 
 

-                     if (_loaded[id] === undefined) {
-                       _loaded[id] = false;
-                       loadMore.push(id);
-                     }
-                   }
-                 }
-               });
-               _toLoadCount += result.data.length;
-               _toLoadTotal += loadMore.length;
-               dispatch$1.call('progressChanged', this, _toLoadCount, _toLoadTotal);
+           if (d.ca) {
+             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';
+           }

 
 

-               if (loadMore.length) {
-                 _toLoad.push.apply(_toLoad, loadMore);
+           return t;
+         }

 
 

-                 osm.loadMultiple(loadMore, loaded);
-               }
+         function filterImages(images) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+           var usernames = context.photos().usernames();

 
 

-               if (!_toLoad.length) {
-                 detectConflicts();
-                 upload(changeset);
-               }
-             }
+           if (fromDate) {
+             var fromTimestamp = new Date(fromDate).getTime();
+             images = images.filter(function (item) {
+               return new Date(item.captured_at).getTime() >= fromTimestamp;
+             });

            }
 
            }
 

-           function detectConflicts() {
-             function choice(id, text, _action) {
-               return {
-                 id: id,
-                 text: text,
-                 action: function action() {
-                   history.replace(_action);
-                 }
-               };
-             }
+           if (toDate) {
+             var toTimestamp = new Date(toDate).getTime();
+             images = images.filter(function (item) {
+               return new Date(item.captured_at).getTime() <= toTimestamp;
+             });
+           }

 
 

-             function formatUser(d) {
-               return '<a href="' + osm.userURL(d) + '" target="_blank">' + d + '</a>';
-             }
+           if (usernames) {
+             images = images.filter(function (item) {
+               return usernames.indexOf(item.captured_by) !== -1;
+             });
+           }

 
 

-             function entityName(entity) {
-               return utilDisplayName(entity) || utilDisplayType(entity.id) + ' ' + entity.id;
-             }
+           return images;
+         }

 
 

-             function sameVersions(local, remote) {
-               if (local.version !== remote.version) return false;
+         function filterSequences(sequences) {
+           var fromDate = context.photos().fromDate();
+           var toDate = context.photos().toDate();
+           var usernames = context.photos().usernames();

 
 

-               if (local.type === 'way') {
-                 var children = utilArrayUnion(local.nodes, remote.nodes);
+           if (fromDate) {
+             var fromTimestamp = new Date(fromDate).getTime();
+             sequences = sequences.filter(function (image) {
+               return new Date(image.properties.captured_at).getTime() >= fromTimestamp;
+             });
+           }

 
 

-                 for (var i = 0; i < children.length; i++) {
-                   var a = localGraph.hasEntity(children[i]);
-                   var b = remoteGraph.hasEntity(children[i]);
-                   if (a && b && a.version !== b.version) return false;
-                 }
-               }
+           if (toDate) {
+             var toTimestamp = new Date(toDate).getTime();
+             sequences = sequences.filter(function (image) {
+               return new Date(image.properties.captured_at).getTime() <= toTimestamp;
+             });
+           }

 
 

-               return true;
-             }
+           if (usernames) {
+             sequences = sequences.filter(function (image) {
+               return usernames.indexOf(image.properties.captured_by) !== -1;
+             });
+           }

 
 

-             _toCheck.forEach(function (id) {
-               var local = localGraph.entity(id);
-               var remote = remoteGraph.entity(id);
-               if (sameVersions(local, remote)) return;
-               var merge = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags, formatUser);
-               history.replace(merge);
-               var mergeConflicts = merge.conflicts();
-               if (!mergeConflicts.length) return; // merged safely
+           return sequences;
+         }

 
 

-               var forceLocal = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags).withOption('force_local');
-               var forceRemote = actionMergeRemoteChanges(id, localGraph, remoteGraph, _discardTags).withOption('force_remote');
-               var keepMine = _t('save.conflict.' + (remote.visible ? 'keep_local' : 'restore'));
-               var keepTheirs = _t('save.conflict.' + (remote.visible ? 'keep_remote' : 'delete'));
+         function update() {
+           var viewer = context.container().select('.photoviewer');
+           var selected = viewer.empty() ? undefined : viewer.datum();
+           var z = ~~context.map().zoom();
+           var showMarkers = z >= minMarkerZoom;
+           var showViewfields = z >= minViewfieldZoom;
+           var service = getService();
+           var sequences = [];
+           var images = [];

 
 

-               _conflicts.push({
-                 id: id,
-                 name: entityName(local),
-                 details: mergeConflicts,
-                 chosen: 1,
-                 choices: [choice(id, keepMine, forceLocal), choice(id, keepTheirs, forceRemote)]
-               });
-             });
+           if (context.photos().showsFlat()) {
+             sequences = service ? service.sequences(projection) : [];
+             images = service && showMarkers ? service.images(projection) : [];
+             sequences = filterSequences(sequences);
+             images = filterImages(images);

            }
            }

-         }

 
 

-         function upload(changeset) {
-           var osm = context.connection();
+           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
+             return d.properties.key;
+           }); // exit

 
 

-           if (!osm) {
-             _errors.push({
-               msg: 'No OSM Service'
-             });
-           }
+           traces.exit().remove(); // enter/update

 
 

-           if (_conflicts.length) {
-             didResultInConflicts(changeset);
-           } else if (_errors.length) {
-             didResultInErrors();
-           } else {
-             var history = context.history();
-             var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
+           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
+           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(images, function (d) {
+             return d.key;
+           }); // exit

 
 

-             if (changes.modified.length || changes.created.length || changes.deleted.length) {
-               dispatch$1.call('willAttemptUpload', this);
-               osm.putChangeset(changeset, changes, uploadCallback);
+           groups.exit().remove(); // enter
+
+           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
+           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+
+           var markers = groups.merge(groupsEnter).sort(function (a, b) {
+             return a === selected ? 1 : b === selected ? -1 : b.loc[1] - a.loc[1]; // sort Y
+           }).attr('transform', transform).select('.viewfield-scale');
+           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
+           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
+           viewfields.exit().remove();
+           viewfields.enter() // viewfields may or may not be drawn...
+           .insert('path', 'circle') // but if they are, draw below the circles
+           .attr('class', 'viewfield').attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z');
+         }
+
+         function drawImages(selection) {
+           var enabled = svgOpenstreetcamImages.enabled,
+               service = getService();
+           layer = selection.selectAll('.layer-openstreetcam').data(service ? [0] : []);
+           layer.exit().remove();
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-openstreetcam').style('display', enabled ? 'block' : 'none');
+           layerEnter.append('g').attr('class', 'sequences');
+           layerEnter.append('g').attr('class', 'markers');
+           layer = layerEnter.merge(layer);
+
+           if (enabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               update();
+               service.loadImages(projection);

              } else {
              } else {

-               // changes were insignificant or reverted by user
-               didResultInNoChanges();
+               editOff();

              }
            }
          }
 
              }
            }
          }
 

-         function uploadCallback(err, changeset) {
-           if (err) {
-             if (err.status === 409) {
-               // 409 Conflict
-               uploader.save(changeset, true, true); // tryAgain = true, checkConflicts = true
-             } else {
-               _errors.push({
-                 msg: err.message || err.responseText,
-                 details: [_t('save.status_code', {
-                   code: err.status
-                 })]
-               });
+         drawImages.enabled = function (_) {
+           if (!arguments.length) return svgOpenstreetcamImages.enabled;
+           svgOpenstreetcamImages.enabled = _;

 
 

-               didResultInErrors();
-             }
+           if (svgOpenstreetcamImages.enabled) {
+             showLayer();
+             context.photos().on('change.openstreetcam_images', update);

            } else {
            } else {

-             didResultInSuccess(changeset);
+             hideLayer();
+             context.photos().on('change.openstreetcam_images', null);

            }
            }

-         }
-
-         function didResultInNoChanges() {
-           dispatch$1.call('resultNoChanges', this);
-           endSave();
-           context.flush(); // reset iD
-         }

 
 

-         function didResultInErrors() {
-           context.history().pop();
-           dispatch$1.call('resultErrors', this, _errors);
-           endSave();
-         }
+           dispatch.call('change');
+           return this;
+         };

 
 

-         function didResultInConflicts(changeset) {
-           _conflicts.sort(function (a, b) {
-             return b.id.localeCompare(a.id);
-           });
+         drawImages.supported = function () {
+           return !!getService();
+         };

 
 

-           dispatch$1.call('resultConflicts', this, changeset, _conflicts, _origChanges);
-           endSave();
-         }
+         init();
+         return drawImages;
+       }

 
 

-         function didResultInSuccess(changeset) {
-           // delete the edit stack cached to local storage
-           context.history().clearSaved();
-           dispatch$1.call('resultSuccess', this, changeset); // Add delay to allow for postgres replication #1646 #2678
+       function svgOsm(projection, context, dispatch) {
+         var enabled = true;

 
 

-           window.setTimeout(function () {
-             endSave();
-             context.flush(); // reset iD
-           }, 2500);
+         function drawOsm(selection) {
+           selection.selectAll('.layer-osm').data(['covered', 'areas', 'lines', 'points', 'labels']).enter().append('g').attr('class', function (d) {
+             return 'layer-osm ' + d;
+           });
+           selection.selectAll('.layer-osm.points').selectAll('.points-group').data(['points', 'midpoints', 'vertices', 'turns']).enter().append('g').attr('class', function (d) {
+             return 'points-group ' + d;
+           });

          }
 
          }
 

-         function endSave() {
-           _isSaving = false;
-           dispatch$1.call('saveEnded', this);
+         function showLayer() {
+           var layer = context.surface().selectAll('.data-layer.osm');
+           layer.interrupt();
+           layer.classed('disabled', false).style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
+             dispatch.call('change');
+           });

          }
 
          }
 

-         uploader.cancelConflictResolution = function () {
-           context.history().pop();
-         };
-
-         uploader.processResolvedConflicts = function (changeset) {
-           var history = context.history();
-
-           for (var i = 0; i < _conflicts.length; i++) {
-             if (_conflicts[i].chosen === 1) {
-               // user chose "use theirs"
-               var entity = context.hasEntity(_conflicts[i].id);
-
-               if (entity && entity.type === 'way') {
-                 var children = utilArrayUniq(entity.nodes);
+         function hideLayer() {
+           var layer = context.surface().selectAll('.data-layer.osm');
+           layer.interrupt();
+           layer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
+             layer.classed('disabled', true);
+             dispatch.call('change');
+           });
+         }

 
 

-                 for (var j = 0; j < children.length; j++) {
-                   history.replace(actionRevert(children[j]));
-                 }
-               }
+         drawOsm.enabled = function (val) {
+           if (!arguments.length) return enabled;
+           enabled = val;

 
 

-               history.replace(actionRevert(_conflicts[i].id));
-             }
+           if (enabled) {
+             showLayer();
+           } else {
+             hideLayer();

            }
 
            }
 

-           uploader.save(changeset, true, false); // tryAgain = true, checkConflicts = false
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         uploader.reset = function () {};
-
-         return uploader;
+         return drawOsm;

        }
 
        }
 

-       var abs$4 = Math.abs;
-       var exp$2 = Math.exp;
-       var E = Math.E;
+       var _notesEnabled = false;

 
 

-       var FORCED$g = fails(function () {
-         return Math.sinh(-2e-17) != -2e-17;
-       });
+       var _osmService;

 
 

-       // `Math.sinh` method
-       // https://tc39.github.io/ecma262/#sec-math.sinh
-       // V8 near Chromium 38 has a problem with very small numbers
-       _export({ target: 'Math', stat: true, forced: FORCED$g }, {
-         sinh: function sinh(x) {
-           return abs$4(x = +x) < 1 ? (mathExpm1(x) - mathExpm1(-x)) / 2 : (exp$2(x - 1) - exp$2(-x - 1)) * (E / 2);
+       function svgNotes(projection, context, dispatch) {
+         if (!dispatch) {
+           dispatch = dispatch$8('change');

          }
          }

-       });

 
 

-       var isRetina = window.devicePixelRatio && window.devicePixelRatio >= 2; // listen for DPI change, e.g. when dragging a browser window from a retina to non-retina screen
+         var throttledRedraw = throttle(function () {
+           dispatch.call('change');
+         }, 1000);

 
 

-       window.matchMedia("\n        (-webkit-min-device-pixel-ratio: 2), /* Safari */\n        (min-resolution: 2dppx),             /* standard */\n        (min-resolution: 192dpi)             /* fallback */\n    ").addListener(function () {
-         isRetina = window.devicePixelRatio && window.devicePixelRatio >= 2;
-       });
+         var minZoom = 12;
+         var touchLayer = select(null);
+         var drawLayer = select(null);
+         var _notesVisible = false;

 
 

-       function localeDateString(s) {
-         if (!s) return null;
-         var options = {
-           day: 'numeric',
-           month: 'short',
-           year: 'numeric'
-         };
-         var d = new Date(s);
-         if (isNaN(d.getTime())) return null;
-         return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
-       }
+         function markerPath(selection, klass) {
+           selection.attr('class', klass).attr('transform', 'translate(-8, -22)').attr('d', 'm17.5,0l-15,0c-1.37,0 -2.5,1.12 -2.5,2.5l0,11.25c0,1.37 1.12,2.5 2.5,2.5l3.75,0l0,3.28c0,0.38 0.43,0.6 0.75,0.37l4.87,-3.65l5.62,0c1.37,0 2.5,-1.12 2.5,-2.5l0,-11.25c0,-1.37 -1.12,-2.5 -2.5,-2.5z');
+         } // Loosely-coupled osm service for fetching notes.

 
 

-       function vintageRange(vintage) {
-         var s;

 
 

-         if (vintage.start || vintage.end) {
-           s = vintage.start || '?';
+         function getService() {
+           if (services.osm && !_osmService) {
+             _osmService = services.osm;

 
 

-           if (vintage.start !== vintage.end) {
-             s += ' - ' + (vintage.end || '?');
+             _osmService.on('loadedNotes', throttledRedraw);
+           } else if (!services.osm && _osmService) {
+             _osmService = null;

            }
            }

-         }

 
 

-         return s;
-       }
+           return _osmService;
+         } // Show the notes

 
 

-       function rendererBackgroundSource(data) {
-         var source = Object.assign({}, data); // shallow copy

 
 

-         var _offset = [0, 0];
-         var _name = source.name;
-         var _description = source.description;
+         function editOn() {
+           if (!_notesVisible) {
+             _notesVisible = true;
+             drawLayer.style('display', 'block');
+           }
+         } // Immediately remove the notes and their touch targets

 
 

-         var _best = !!source.best;

 
 

-         var _template = source.encrypted ? utilAesDecrypt(source.template) : source.template;
+         function editOff() {
+           if (_notesVisible) {
+             _notesVisible = false;
+             drawLayer.style('display', 'none');
+             drawLayer.selectAll('.note').remove();
+             touchLayer.selectAll('.note').remove();
+           }
+         } // Enable the layer.  This shows the notes and transitions them to visible.

 
 

-         source.tileSize = data.tileSize || 256;
-         source.zoomExtent = data.zoomExtent || [0, 22];
-         source.overzoom = data.overzoom !== false;

 
 

-         source.offset = function (val) {
-           if (!arguments.length) return _offset;
-           _offset = val;
-           return source;
-         };
+         function layerOn() {
+           editOn();
+           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
+             dispatch.call('change');
+           });
+         } // Disable the layer.  This transitions the layer invisible and then hides the notes.

 
 

-         source.nudge = function (val, zoomlevel) {
-           _offset[0] += val[0] / Math.pow(2, zoomlevel);
-           _offset[1] += val[1] / Math.pow(2, zoomlevel);
-           return source;
-         };

 
 

-         source.name = function () {
-           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
-           return _t('imagery.' + id_safe + '.name', {
-             "default": _name
+         function layerOff() {
+           throttledRedraw.cancel();
+           drawLayer.interrupt();
+           touchLayer.selectAll('.note').remove();
+           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
+             editOff();
+             dispatch.call('change');

            });
            });

-         };
+         } // Update the note markers

 
 

-         source.label = function () {
-           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
-           return _t.html('imagery.' + id_safe + '.name', {
-             "default": _name
-           });
-         };

 
 

-         source.description = function () {
-           var id_safe = source.id.replace(/\./g, '<TX_DOT>');
-           return _t.html('imagery.' + id_safe + '.description', {
-             "default": _description
-           });
-         };
+         function updateMarkers() {
+           if (!_notesVisible || !_notesEnabled) return;
+           var service = getService();
+           var selectedID = context.selectedNoteID();
+           var data = service ? service.notes(projection) : [];
+           var getTransform = svgPointTransform(projection); // Draw markers..

 
 

-         source.best = function () {
-           return _best;
-         };
+           var notes = drawLayer.selectAll('.note').data(data, function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

-         source.area = function () {
-           if (!data.polygon) return Number.MAX_VALUE; // worldwide
+           notes.exit().remove(); // enter

 
 

-           var area = d3_geoArea({
-             type: 'MultiPolygon',
-             coordinates: [data.polygon]
+           var notesEnter = notes.enter().append('g').attr('class', function (d) {
+             return 'note note-' + d.id + ' ' + d.status;
+           }).classed('new', function (d) {
+             return d.id < 0;

            });
            });

-           return isNaN(area) ? 0 : area;
-         };
+           notesEnter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
+           notesEnter.append('path').call(markerPath, 'shadow');
+           notesEnter.append('use').attr('class', 'note-fill').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').attr('xlink:href', '#iD-icon-note');
+           notesEnter.selectAll('.icon-annotation').data(function (d) {
+             return [d];
+           }).enter().append('use').attr('class', 'icon-annotation').attr('width', '10px').attr('height', '10px').attr('x', '-3px').attr('y', '-19px').attr('xlink:href', function (d) {
+             if (d.id < 0) return '#iD-icon-plus';
+             if (d.status === 'open') return '#iD-icon-close';
+             return '#iD-icon-apply';
+           }); // update

 
 

-         source.imageryUsed = function () {
-           return _name || source.id;
-         };
+           notes.merge(notesEnter).sort(sortY).classed('selected', function (d) {
+             var mode = context.mode();
+             var isMoving = mode && mode.id === 'drag-note'; // no shadows when dragging

 
 

-         source.template = function (val) {
-           if (!arguments.length) return _template;
+             return !isMoving && d.id === selectedID;
+           }).attr('transform', getTransform); // Draw targets..

 
 

-           if (source.id === 'custom') {
-             _template = val;
+           if (touchLayer.empty()) return;
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var targets = touchLayer.selectAll('.note').data(data, function (d) {
+             return d.id;
+           }); // exit
+
+           targets.exit().remove(); // enter/update
+
+           targets.enter().append('rect').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').merge(targets).sort(sortY).attr('class', function (d) {
+             var newClass = d.id < 0 ? 'new' : '';
+             return 'note target note-' + d.id + ' ' + fillClass + newClass;
+           }).attr('transform', getTransform);
+
+           function sortY(a, b) {
+             if (a.id === selectedID) return 1;
+             if (b.id === selectedID) return -1;
+             return b.loc[1] - a.loc[1];

            }
            }

+         } // Draw the notes layer and schedule loading notes and updating markers.

 
 

-           return source;
-         };

 
 

-         source.url = function (coord) {
-           var result = _template;
-           if (result === '') return result; // source 'none'
-           // Guess a type based on the tokens present in the template
-           // (This is for 'custom' source, where we don't know)
+         function drawNotes(selection) {
+           var service = getService();
+           var surface = context.surface();

 
 

-           if (!source.type) {
-             if (/SERVICE=WMS|\{(proj|wkid|bbox)\}/.test(_template)) {
-               source.type = 'wms';
-               source.projection = 'EPSG:3857'; // guess
-             } else if (/\{(x|y)\}/.test(_template)) {
-               source.type = 'tms';
-             } else if (/\{u\}/.test(_template)) {
-               source.type = 'bing';
+           if (surface && !surface.empty()) {
+             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
+           }
+
+           drawLayer = selection.selectAll('.layer-notes').data(service ? [0] : []);
+           drawLayer.exit().remove();
+           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-notes').style('display', _notesEnabled ? 'block' : 'none').merge(drawLayer);
+
+           if (_notesEnabled) {
+             if (service && ~~context.map().zoom() >= minZoom) {
+               editOn();
+               service.loadNotes(projection);
+               updateMarkers();
+             } else {
+               editOff();

              }
            }
              }
            }

+         } // Toggles the layer on and off

 
 

-           if (source.type === 'wms') {
-             var tileToProjectedCoords = function tileToProjectedCoords(x, y, z) {
-               //polyfill for IE11, PhantomJS
-               var sinh = Math.sinh || function (x) {
-                 var y = Math.exp(x);
-                 return (y - 1 / y) / 2;
-               };

 
 

-               var zoomSize = Math.pow(2, z);
-               var lon = x / zoomSize * Math.PI * 2 - Math.PI;
-               var lat = Math.atan(sinh(Math.PI * (1 - 2 * y / zoomSize)));
+         drawNotes.enabled = function (val) {
+           if (!arguments.length) return _notesEnabled;
+           _notesEnabled = val;

 
 

-               switch (source.projection) {
-                 case 'EPSG:4326':
-                   return {
-                     x: lon * 180 / Math.PI,
-                     y: lat * 180 / Math.PI
-                   };
+           if (_notesEnabled) {
+             layerOn();
+           } else {
+             layerOff();

 
 

-                 default:
-                   // EPSG:3857 and synonyms
-                   var mercCoords = mercatorRaw(lon, lat);
-                   return {
-                     x: 20037508.34 / Math.PI * mercCoords[0],
-                     y: 20037508.34 / Math.PI * mercCoords[1]
-                   };
-               }
-             };
+             if (context.selectedNoteID()) {
+               context.enter(modeBrowse(context));
+             }
+           }

 
 

-             var tileSize = source.tileSize;
-             var projection = source.projection;
-             var minXmaxY = tileToProjectedCoords(coord[0], coord[1], coord[2]);
-             var maxXminY = tileToProjectedCoords(coord[0] + 1, coord[1] + 1, coord[2]);
-             result = result.replace(/\{(\w+)\}/g, function (token, key) {
-               switch (key) {
-                 case 'width':
-                 case 'height':
-                   return tileSize;
+           dispatch.call('change');
+           return this;
+         };

 
 

-                 case 'proj':
-                   return projection;
+         return drawNotes;
+       }

 
 

-                 case 'wkid':
-                   return projection.replace(/^EPSG:/, '');
+       function svgTouch() {
+         function drawTouch(selection) {
+           selection.selectAll('.layer-touch').data(['areas', 'lines', 'points', 'turns', 'markers']).enter().append('g').attr('class', function (d) {
+             return 'layer-touch ' + d;
+           });
+         }
+
+         return drawTouch;
+       }
+
+       function refresh(selection, node) {
+         var cr = node.getBoundingClientRect();
+         var prop = [cr.width, cr.height];
+         selection.property('__dimensions__', prop);
+         return prop;
+       }
+
+       function utilGetDimensions(selection, force) {
+         if (!selection || selection.empty()) {
+           return [0, 0];
+         }
+
+         var node = selection.node(),
+             cached = selection.property('__dimensions__');
+         return !cached || force ? refresh(selection, node) : cached;
+       }
+       function utilSetDimensions(selection, dimensions) {
+         if (!selection || selection.empty()) {
+           return selection;
+         }
+
+         var node = selection.node();
+
+         if (dimensions === null) {
+           refresh(selection, node);
+           return selection;
+         }
+
+         return selection.property('__dimensions__', [dimensions[0], dimensions[1]]).attr('width', dimensions[0]).attr('height', dimensions[1]);
+       }
+
+       function svgLayers(projection, context) {
+         var dispatch = dispatch$8('change');
+         var svg = select(null);
+         var _layers = [{
+           id: 'osm',
+           layer: svgOsm(projection, context, dispatch)
+         }, {
+           id: 'notes',
+           layer: svgNotes(projection, context, dispatch)
+         }, {
+           id: 'data',
+           layer: svgData(projection, context, dispatch)
+         }, {
+           id: 'keepRight',
+           layer: svgKeepRight(projection, context, dispatch)
+         }, {
+           id: 'improveOSM',
+           layer: svgImproveOSM(projection, context, dispatch)
+         }, {
+           id: 'osmose',
+           layer: svgOsmose(projection, context, dispatch)
+         }, {
+           id: 'streetside',
+           layer: svgStreetside(projection, context, dispatch)
+         }, {
+           id: 'mapillary',
+           layer: svgMapillaryImages(projection, context, dispatch)
+         }, {
+           id: 'mapillary-position',
+           layer: svgMapillaryPosition(projection, context)
+         }, {
+           id: 'mapillary-map-features',
+           layer: svgMapillaryMapFeatures(projection, context, dispatch)
+         }, {
+           id: 'mapillary-signs',
+           layer: svgMapillarySigns(projection, context, dispatch)
+         }, {
+           id: 'openstreetcam',
+           layer: svgOpenstreetcamImages(projection, context, dispatch)
+         }, {
+           id: 'debug',
+           layer: svgDebug(projection, context)
+         }, {
+           id: 'geolocate',
+           layer: svgGeolocate(projection)
+         }, {
+           id: 'touch',
+           layer: svgTouch()
+         }];

 
 

-                 case 'bbox':
-                   // WMS 1.3 flips x/y for some coordinate systems including EPSG:4326 - #7557
-                   if (projection === 'EPSG:4326' && // The CRS parameter implies version 1.3 (prior versions use SRS)
-                   /VERSION=1.3|CRS={proj}/.test(source.template())) {
-                     return maxXminY.y + ',' + minXmaxY.x + ',' + minXmaxY.y + ',' + maxXminY.x;
-                   } else {
-                     return minXmaxY.x + ',' + maxXminY.y + ',' + maxXminY.x + ',' + minXmaxY.y;
-                   }
+         function drawLayers(selection) {
+           svg = selection.selectAll('.surface').data([0]);
+           svg = svg.enter().append('svg').attr('class', 'surface').merge(svg);
+           var defs = svg.selectAll('.surface-defs').data([0]);
+           defs.enter().append('defs').attr('class', 'surface-defs');
+           var groups = svg.selectAll('.data-layer').data(_layers);
+           groups.exit().remove();
+           groups.enter().append('g').attr('class', function (d) {
+             return 'data-layer ' + d.id;
+           }).merge(groups).each(function (d) {
+             select(this).call(d.layer);
+           });
+         }

 
 

-                 case 'w':
-                   return minXmaxY.x;
+         drawLayers.all = function () {
+           return _layers;
+         };

 
 

-                 case 's':
-                   return maxXminY.y;
+         drawLayers.layer = function (id) {
+           var obj = _layers.find(function (o) {
+             return o.id === id;
+           });

 
 

-                 case 'n':
-                   return maxXminY.x;
+           return obj && obj.layer;
+         };

 
 

-                 case 'e':
-                   return minXmaxY.y;
+         drawLayers.only = function (what) {
+           var arr = [].concat(what);

 
 

-                 default:
-                   return token;
-               }
-             });
-           } else if (source.type === 'tms') {
-             result = result.replace('{x}', coord[0]).replace('{y}', coord[1]) // TMS-flipped y coordinate
-             .replace(/\{[t-]y\}/, Math.pow(2, coord[2]) - coord[1] - 1).replace(/\{z(oom)?\}/, coord[2]) // only fetch retina tiles for retina screens
-             .replace(/\{@2x\}|\{r\}/, isRetina ? '@2x' : '');
-           } else if (source.type === 'bing') {
-             result = result.replace('{u}', function () {
-               var u = '';
+           var all = _layers.map(function (layer) {
+             return layer.id;
+           });

 
 

-               for (var zoom = coord[2]; zoom > 0; zoom--) {
-                 var b = 0;
-                 var mask = 1 << zoom - 1;
-                 if ((coord[0] & mask) !== 0) b++;
-                 if ((coord[1] & mask) !== 0) b += 2;
-                 u += b.toString();
-               }
+           return drawLayers.remove(utilArrayDifference(all, arr));
+         };

 
 

-               return u;
+         drawLayers.remove = function (what) {
+           var arr = [].concat(what);
+           arr.forEach(function (id) {
+             _layers = _layers.filter(function (o) {
+               return o.id !== id;

              });
              });

-           } // these apply to any type..
-
-
-           result = result.replace(/\{switch:([^}]+)\}/, function (s, r) {
-             var subdomains = r.split(',');
-             return subdomains[(coord[0] + coord[1]) % subdomains.length];

            });
            });

-           return result;
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         source.validZoom = function (z) {
-           return source.zoomExtent[0] <= z && (source.overzoom || source.zoomExtent[1] > z);
+         drawLayers.add = function (what) {
+           var arr = [].concat(what);
+           arr.forEach(function (obj) {
+             if ('id' in obj && 'layer' in obj) {
+               _layers.push(obj);
+             }
+           });
+           dispatch.call('change');
+           return this;

          };
 
          };
 

-         source.isLocatorOverlay = function () {
-           return source.id === 'mapbox_locator_overlay';
+         drawLayers.dimensions = function (val) {
+           if (!arguments.length) return utilGetDimensions(svg);
+           utilSetDimensions(svg, val);
+           return this;

          };
          };

-         /* hides a source from the list, but leaves it available for use */

 
 

+         return utilRebind(drawLayers, dispatch, 'on');
+       }

 
 

-         source.isHidden = function () {
-           return source.id === 'DigitalGlobe-Premium-vintage' || source.id === 'DigitalGlobe-Standard-vintage';
+       function svgLines(projection, context) {
+         var detected = utilDetect();
+         var highway_stack = {
+           motorway: 0,
+           motorway_link: 1,
+           trunk: 2,
+           trunk_link: 3,
+           primary: 4,
+           primary_link: 5,
+           secondary: 6,
+           tertiary: 7,
+           unclassified: 8,
+           residential: 9,
+           service: 10,
+           footway: 11

          };
 
          };
 

-         source.copyrightNotices = function () {};
+         function drawTargets(selection, graph, entities, filter) {
+           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
+           var getPath = svgPath(projection).geojson;
+           var activeID = context.activeID();
+           var base = context.history().base(); // The targets and nopes will be MultiLineString sub-segments of the ways

 
 

-         source.getMetadata = function (center, tileCoord, callback) {
-           var vintage = {
-             start: localeDateString(source.startDate),
-             end: localeDateString(source.endDate)
-           };
-           vintage.range = vintageRange(vintage);
-           var metadata = {
-             vintage: vintage
+           var data = {
+             targets: [],
+             nopes: []

            };
            };

-           callback(null, metadata);
-         };
+           entities.forEach(function (way) {
+             var features = svgSegmentWay(way, graph, activeID);
+             data.targets.push.apply(data.targets, features.passive);
+             data.nopes.push.apply(data.nopes, features.active);
+           }); // Targets allow hover and vertex snapping

 
 

-         return source;
-       }
+           var targetData = data.targets.filter(getPath);
+           var targets = selection.selectAll('.line.target-allowed').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(targetData, function key(d) {
+             return d.id;
+           }); // exit

 
 

-       rendererBackgroundSource.Bing = function (data, dispatch) {
-         // http://msdn.microsoft.com/en-us/library/ff701716.aspx
-         // http://msdn.microsoft.com/en-us/library/ff701701.aspx
-         data.template = 'https://ecn.t{switch:0,1,2,3}.tiles.virtualearth.net/tiles/a{u}.jpeg?g=587&mkt=en-gb&n=z';
-         var bing = rendererBackgroundSource(data); // var key = 'Arzdiw4nlOJzRwOz__qailc8NiR31Tt51dN2D7cm57NrnceZnCpgOkmJhNpGoppU'; // P2, JOSM, etc
+           targets.exit().remove();

 
 

-         var key = 'Ak5oTE46TUbjRp08OFVcGpkARErDobfpuyNKa-W2mQ8wbt1K1KL8p1bIRwWwcF-Q'; // iD
+           var segmentWasEdited = function segmentWasEdited(d) {
+             var wayID = d.properties.entity.id; // if the whole line was edited, don't draw segment changes

 
 

-         var url = 'https://dev.virtualearth.net/REST/v1/Imagery/Metadata/Aerial?include=ImageryProviders&key=' + key;
-         var cache = {};
-         var inflight = {};
-         var providers = [];
-         d3_json(url).then(function (json) {
-           providers = json.resourceSets[0].resources[0].imageryProviders.map(function (provider) {
-             return {
-               attribution: provider.attribution,
-               areas: provider.coverageAreas.map(function (area) {
-                 return {
-                   zoom: [area.zoomMin, area.zoomMax],
-                   extent: geoExtent([area.bbox[1], area.bbox[0]], [area.bbox[3], area.bbox[2]])
-                 };
-               })
-             };
-           });
-           dispatch.call('change');
-         })["catch"](function () {
-           /* ignore */
-         });
+             if (!base.entities[wayID] || !fastDeepEqual(graph.entities[wayID].nodes, base.entities[wayID].nodes)) {
+               return false;
+             }

 
 

-         bing.copyrightNotices = function (zoom, extent) {
-           zoom = Math.min(zoom, 21);
-           return providers.filter(function (provider) {
-             return provider.areas.some(function (area) {
-               return extent.intersects(area.extent) && area.zoom[0] <= zoom && area.zoom[1] >= zoom;
+             return d.properties.nodes.some(function (n) {
+               return !base.entities[n.id] || !fastDeepEqual(graph.entities[n.id].loc, base.entities[n.id].loc);

              });
              });

-           }).map(function (provider) {
-             return provider.attribution;
-           }).join(', ');
-         };
+           }; // enter/update

 
 

-         bing.getMetadata = function (center, tileCoord, callback) {
-           var tileID = tileCoord.slice(0, 3).join('/');
-           var zoom = Math.min(tileCoord[2], 21);
-           var centerPoint = center[1] + ',' + center[0]; // lat,lng

 
 

-           var url = 'https://dev.virtualearth.net/REST/v1/Imagery/Metadata/Aerial/' + centerPoint + '?zl=' + zoom + '&key=' + key;
-           if (inflight[tileID]) return;
+           targets.enter().append('path').merge(targets).attr('d', getPath).attr('class', function (d) {
+             return 'way line target target-allowed ' + targetClass + d.id;
+           }).classed('segment-edited', segmentWasEdited); // NOPE

 
 

-           if (!cache[tileID]) {
-             cache[tileID] = {};
-           }
+           var nopeData = data.nopes.filter(getPath);
+           var nopes = selection.selectAll('.line.target-nope').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(nopeData, function key(d) {
+             return d.id;
+           }); // exit

 
 

-           if (cache[tileID] && cache[tileID].metadata) {
-             return callback(null, cache[tileID].metadata);
-           }
+           nopes.exit().remove(); // enter/update

 
 

-           inflight[tileID] = true;
-           d3_json(url).then(function (result) {
-             delete inflight[tileID];
+           nopes.enter().append('path').merge(nopes).attr('d', getPath).attr('class', function (d) {
+             return 'way line target target-nope ' + nopeClass + d.id;
+           }).classed('segment-edited', segmentWasEdited);
+         }

 
 

-             if (!result) {
-               throw new Error('Unknown Error');
-             }
+         function drawLines(selection, graph, entities, filter) {
+           var base = context.history().base();

 
 

-             var vintage = {
-               start: localeDateString(result.resourceSets[0].resources[0].vintageStart),
-               end: localeDateString(result.resourceSets[0].resources[0].vintageEnd)
-             };
-             vintage.range = vintageRange(vintage);
-             var metadata = {
-               vintage: vintage
-             };
-             cache[tileID].metadata = metadata;
-             if (callback) callback(null, metadata);
-           })["catch"](function (err) {
-             delete inflight[tileID];
-             if (callback) callback(err.message);
-           });
-         };
+           function waystack(a, b) {
+             var selected = context.selectedIDs();
+             var scoreA = selected.indexOf(a.id) !== -1 ? 20 : 0;
+             var scoreB = selected.indexOf(b.id) !== -1 ? 20 : 0;

 
 

-         bing.terms_url = 'https://blog.openstreetmap.org/2010/11/30/microsoft-imagery-details';
-         return bing;
-       };
+             if (a.tags.highway) {
+               scoreA -= highway_stack[a.tags.highway];
+             }

 
 

-       rendererBackgroundSource.Esri = function (data) {
-         // in addition to using the tilemap at zoom level 20, overzoom real tiles - #4327 (deprecated technique, but it works)
-         if (data.template.match(/blankTile/) === null) {
-           data.template = data.template + '?blankTile=false';
-         }
+             if (b.tags.highway) {
+               scoreB -= highway_stack[b.tags.highway];
+             }

 
 

-         var esri = rendererBackgroundSource(data);
-         var cache = {};
-         var inflight = {};
+             return scoreA - scoreB;
+           }

 
 

-         var _prevCenter; // use a tilemap service to set maximum zoom for esri tiles dynamically
-         // https://developers.arcgis.com/documentation/tiled-elevation-service/
+           function drawLineGroup(selection, klass, isSelected) {
+             // Note: Don't add `.selected` class in draw modes
+             var mode = context.mode();
+             var isDrawing = mode && /^draw/.test(mode.id);
+             var selectedClass = !isDrawing && isSelected ? 'selected ' : '';
+             var lines = selection.selectAll('path').filter(filter).data(getPathData(isSelected), osmEntity.key);
+             lines.exit().remove(); // Optimization: Call expensive TagClasses only on enter selection. This
+             // works because osmEntity.key is defined to include the entity v attribute.

 
 

+             lines.enter().append('path').attr('class', function (d) {
+               var prefix = 'way line'; // if this line isn't styled by its own tags

 
 

-         esri.fetchTilemap = function (center) {
-           // skip if we have already fetched a tilemap within 5km
-           if (_prevCenter && geoSphericalDistance(center, _prevCenter) < 5000) return;
-           _prevCenter = center; // tiles are available globally to zoom level 19, afterward they may or may not be present
+               if (!d.hasInterestingTags()) {
+                 var parentRelations = graph.parentRelations(d);
+                 var parentMultipolygons = parentRelations.filter(function (relation) {
+                   return relation.isMultipolygon();
+                 }); // and if it's a member of at least one multipolygon relation

 
 

-           var z = 20; // first generate a random url using the template
+                 if (parentMultipolygons.length > 0 && // and only multipolygon relations
+                 parentRelations.length === parentMultipolygons.length) {
+                   // then fudge the classes to style this as an area edge
+                   prefix = 'relation area';
+                 }
+               }

 
 

-           var dummyUrl = esri.url([1, 2, 3]); // calculate url z/y/x from the lat/long of the center of the map
+               var oldMPClass = oldMultiPolygonOuters[d.id] ? 'old-multipolygon ' : '';
+               return prefix + ' ' + klass + ' ' + selectedClass + oldMPClass + d.id;
+             }).classed('added', function (d) {
+               return !base.entities[d.id];
+             }).classed('geometry-edited', function (d) {
+               return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].nodes, base.entities[d.id].nodes);
+             }).classed('retagged', function (d) {
+               return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
+             }).call(svgTagClasses()).merge(lines).sort(waystack).attr('d', getPath).call(svgTagClasses().tags(svgRelationMemberTags(graph)));
+             return selection;
+           }

 
 

-           var x = Math.floor((center[0] + 180) / 360 * Math.pow(2, z));
-           var y = Math.floor((1 - Math.log(Math.tan(center[1] * Math.PI / 180) + 1 / Math.cos(center[1] * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, z)); // fetch an 8x8 grid to leverage cache
+           function getPathData(isSelected) {
+             return function () {
+               var layer = this.parentNode.__data__;
+               var data = pathdata[layer] || [];
+               return data.filter(function (d) {
+                 if (isSelected) {
+                   return context.selectedIDs().indexOf(d.id) !== -1;
+                 } else {
+                   return context.selectedIDs().indexOf(d.id) === -1;
+                 }
+               });
+             };
+           }

 
 

-           var tilemapUrl = dummyUrl.replace(/tile\/[0-9]+\/[0-9]+\/[0-9]+\?blankTile=false/, 'tilemap') + '/' + z + '/' + y + '/' + x + '/8/8'; // make the request and introspect the response from the tilemap server
+           function addMarkers(layergroup, pathclass, groupclass, groupdata, marker) {
+             var markergroup = layergroup.selectAll('g.' + groupclass).data([pathclass]);
+             markergroup = markergroup.enter().append('g').attr('class', groupclass).merge(markergroup);
+             var markers = markergroup.selectAll('path').filter(filter).data(function data() {
+               return groupdata[this.parentNode.__data__] || [];
+             }, function key(d) {
+               return [d.id, d.index];
+             });
+             markers.exit().remove();
+             markers = markers.enter().append('path').attr('class', pathclass).merge(markers).attr('marker-mid', marker).attr('d', function (d) {
+               return d.d;
+             });

 
 

-           d3_json(tilemapUrl).then(function (tilemap) {
-             if (!tilemap) {
-               throw new Error('Unknown Error');
+             if (detected.ie) {
+               markers.each(function () {
+                 this.parentNode.insertBefore(this, this);
+               });

              }
              }

+           }

 
 

-             var hasTiles = true;
+           var getPath = svgPath(projection, graph);
+           var ways = [];
+           var onewaydata = {};
+           var sideddata = {};
+           var oldMultiPolygonOuters = {};

 
 

-             for (var i = 0; i < tilemap.data.length; i++) {
-               // 0 means an individual tile in the grid doesn't exist
-               if (!tilemap.data[i]) {
-                 hasTiles = false;
-                 break;
-               }
-             } // if any tiles are missing at level 20 we restrict maxZoom to 19
+           for (var i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             var outer = osmOldMultipolygonOuterMember(entity, graph);

 
 

+             if (outer) {
+               ways.push(entity.mergeTags(outer.tags));
+               oldMultiPolygonOuters[outer.id] = true;
+             } else if (entity.geometry(graph) === 'line') {
+               ways.push(entity);
+             }
+           }

 
 

-             esri.zoomExtent[1] = hasTiles ? 22 : 19;
-           })["catch"](function () {
-             /* ignore */
+           ways = ways.filter(getPath);
+           var pathdata = utilArrayGroupBy(ways, function (way) {
+             return way.layer();

            });
            });

-         };
+           Object.keys(pathdata).forEach(function (k) {
+             var v = pathdata[k];
+             var onewayArr = v.filter(function (d) {
+               return d.isOneWay();
+             });
+             var onewaySegments = svgMarkerSegments(projection, graph, 35, function shouldReverse(entity) {
+               return entity.tags.oneway === '-1';
+             }, function bothDirections(entity) {
+               return entity.tags.oneway === 'reversible' || entity.tags.oneway === 'alternating';
+             });
+             onewaydata[k] = utilArrayFlatten(onewayArr.map(onewaySegments));
+             var sidedArr = v.filter(function (d) {
+               return d.isSided();
+             });
+             var sidedSegments = svgMarkerSegments(projection, graph, 30, function shouldReverse() {
+               return false;
+             }, function bothDirections() {
+               return false;
+             });
+             sideddata[k] = utilArrayFlatten(sidedArr.map(sidedSegments));
+           });
+           var covered = selection.selectAll('.layer-osm.covered'); // under areas

 
 

-         esri.getMetadata = function (center, tileCoord, callback) {
-           var tileID = tileCoord.slice(0, 3).join('/');
-           var zoom = Math.min(tileCoord[2], esri.zoomExtent[1]);
-           var centerPoint = center[0] + ',' + center[1]; // long, lat (as it should be)
+           var uncovered = selection.selectAll('.layer-osm.lines'); // over areas

 
 

-           var unknown = _t('info_panels.background.unknown');
-           var metadataLayer;
-           var vintage = {};
-           var metadata = {};
-           if (inflight[tileID]) return;
+           var touchLayer = selection.selectAll('.layer-touch.lines'); // Draw lines..

 
 

-           switch (true) {
-             case zoom >= 20 && esri.id === 'EsriWorldImageryClarity':
-               metadataLayer = 4;
-               break;
+           [covered, uncovered].forEach(function (selection) {
+             var range = selection === covered ? range$1(-10, 0) : range$1(0, 11);
+             var layergroup = selection.selectAll('g.layergroup').data(range);
+             layergroup = layergroup.enter().append('g').attr('class', function (d) {
+               return 'layergroup layer' + String(d);
+             }).merge(layergroup);
+             layergroup.selectAll('g.linegroup').data(['shadow', 'casing', 'stroke', 'shadow-highlighted', 'casing-highlighted', 'stroke-highlighted']).enter().append('g').attr('class', function (d) {
+               return 'linegroup line-' + d;
+             });
+             layergroup.selectAll('g.line-shadow').call(drawLineGroup, 'shadow', false);
+             layergroup.selectAll('g.line-casing').call(drawLineGroup, 'casing', false);
+             layergroup.selectAll('g.line-stroke').call(drawLineGroup, 'stroke', false);
+             layergroup.selectAll('g.line-shadow-highlighted').call(drawLineGroup, 'shadow', true);
+             layergroup.selectAll('g.line-casing-highlighted').call(drawLineGroup, 'casing', true);
+             layergroup.selectAll('g.line-stroke-highlighted').call(drawLineGroup, 'stroke', true);
+             addMarkers(layergroup, 'oneway', 'onewaygroup', onewaydata, 'url(#ideditor-oneway-marker)');
+             addMarkers(layergroup, 'sided', 'sidedgroup', sideddata, function marker(d) {
+               var category = graph.entity(d.id).sidednessIdentifier();
+               return 'url(#ideditor-sided-marker-' + category + ')';
+             });
+           }); // Draw touch targets..

 
 

-             case zoom >= 19:
-               metadataLayer = 3;
-               break;
+           touchLayer.call(drawTargets, graph, ways, filter);
+         }

 
 

-             case zoom >= 17:
-               metadataLayer = 2;
-               break;
+         return drawLines;
+       }

 
 

-             case zoom >= 13:
-               metadataLayer = 0;
-               break;
+       function svgMidpoints(projection, context) {
+         var targetRadius = 8;

 
 

-             default:
-               metadataLayer = 99;
-           }
+         function drawTargets(selection, graph, entities, filter) {
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var getTransform = svgPointTransform(projection).geojson;
+           var data = entities.map(function (midpoint) {
+             return {
+               type: 'Feature',
+               id: midpoint.id,
+               properties: {
+                 target: true,
+                 entity: midpoint
+               },
+               geometry: {
+                 type: 'Point',
+                 coordinates: midpoint.loc
+               }
+             };
+           });
+           var targets = selection.selectAll('.midpoint.target').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(data, function key(d) {
+             return d.id;
+           }); // exit

 
 

-           var url; // build up query using the layer appropriate to the current zoom
+           targets.exit().remove(); // enter/update

 
 

-           if (esri.id === 'EsriWorldImagery') {
-             url = 'https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/';
-           } else if (esri.id === 'EsriWorldImageryClarity') {
-             url = 'https://serviceslab.arcgisonline.com/arcgis/rest/services/Clarity_World_Imagery/MapServer/';
-           }
+           targets.enter().append('circle').attr('r', targetRadius).merge(targets).attr('class', function (d) {
+             return 'node midpoint target ' + fillClass + d.id;
+           }).attr('transform', getTransform);
+         }

 
 

-           url += metadataLayer + '/query?returnGeometry=false&geometry=' + centerPoint + '&inSR=4326&geometryType=esriGeometryPoint&outFields=*&f=json';
+         function drawMidpoints(selection, graph, entities, filter, extent) {
+           var drawLayer = selection.selectAll('.layer-osm.points .points-group.midpoints');
+           var touchLayer = selection.selectAll('.layer-touch.points');
+           var mode = context.mode();

 
 

-           if (!cache[tileID]) {
-             cache[tileID] = {};
+           if (mode && mode.id !== 'select' || !context.map().withinEditableZoom()) {
+             drawLayer.selectAll('.midpoint').remove();
+             touchLayer.selectAll('.midpoint.target').remove();
+             return;

            }
 
            }
 

-           if (cache[tileID] && cache[tileID].metadata) {
-             return callback(null, cache[tileID].metadata);
-           } // accurate metadata is only available >= 13
-
-
-           if (metadataLayer === 99) {
-             vintage = {
-               start: null,
-               end: null,
-               range: null
-             };
-             metadata = {
-               vintage: null,
-               source: unknown,
-               description: unknown,
-               resolution: unknown,
-               accuracy: unknown
-             };
-             callback(null, metadata);
-           } else {
-             inflight[tileID] = true;
-             d3_json(url).then(function (result) {
-               delete inflight[tileID];
+           var poly = extent.polygon();
+           var midpoints = {};

 
 

-               if (!result) {
-                 throw new Error('Unknown Error');
-               } else if (result.features && result.features.length < 1) {
-                 throw new Error('No Results');
-               } else if (result.error && result.error.message) {
-                 throw new Error(result.error.message);
-               } // pass through the discrete capture date from metadata
+           for (var i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             if (entity.type !== 'way') continue;
+             if (!filter(entity)) continue;
+             if (context.selectedIDs().indexOf(entity.id) < 0) continue;
+             var nodes = graph.childNodes(entity);

 
 

+             for (var j = 0; j < nodes.length - 1; j++) {
+               var a = nodes[j];
+               var b = nodes[j + 1];
+               var id = [a.id, b.id].sort().join('-');

 
 

-               var captureDate = localeDateString(result.features[0].attributes.SRC_DATE2);
-               vintage = {
-                 start: captureDate,
-                 end: captureDate,
-                 range: captureDate
-               };
-               metadata = {
-                 vintage: vintage,
-                 source: clean(result.features[0].attributes.NICE_NAME),
-                 description: clean(result.features[0].attributes.NICE_DESC),
-                 resolution: clean(+parseFloat(result.features[0].attributes.SRC_RES).toFixed(4)),
-                 accuracy: clean(+parseFloat(result.features[0].attributes.SRC_ACC).toFixed(4))
-               }; // append units - meters
+               if (midpoints[id]) {
+                 midpoints[id].parents.push(entity);
+               } else if (geoVecLength(projection(a.loc), projection(b.loc)) > 40) {
+                 var point = geoVecInterp(a.loc, b.loc, 0.5);
+                 var loc = null;

 
 

-               if (isFinite(metadata.resolution)) {
-                 metadata.resolution += ' m';
-               }
+                 if (extent.intersects(point)) {
+                   loc = point;
+                 } else {
+                   for (var k = 0; k < 4; k++) {
+                     point = geoLineIntersection([a.loc, b.loc], [poly[k], poly[k + 1]]);

 
 

-               if (isFinite(metadata.accuracy)) {
-                 metadata.accuracy += ' m';
-               }
+                     if (point && geoVecLength(projection(a.loc), projection(point)) > 20 && geoVecLength(projection(b.loc), projection(point)) > 20) {
+                       loc = point;
+                       break;
+                     }
+                   }
+                 }

 
 

-               cache[tileID].metadata = metadata;
-               if (callback) callback(null, metadata);
-             })["catch"](function (err) {
-               delete inflight[tileID];
-               if (callback) callback(err.message);
-             });
+                 if (loc) {
+                   midpoints[id] = {
+                     type: 'midpoint',
+                     id: id,
+                     loc: loc,
+                     edge: [a.id, b.id],
+                     parents: [entity]
+                   };
+                 }
+               }
+             }

            }
 
            }
 

-           function clean(val) {
-             return String(val).trim() || unknown;
-           }
-         };
+           function midpointFilter(d) {
+             if (midpoints[d.id]) return true;

 
 

-         return esri;
-       };
+             for (var i = 0; i < d.parents.length; i++) {
+               if (filter(d.parents[i])) {
+                 return true;
+               }
+             }

 
 

-       rendererBackgroundSource.None = function () {
-         var source = rendererBackgroundSource({
-           id: 'none',
-           template: ''
-         });
+             return false;
+           }

 
 

-         source.name = function () {
-           return _t('background.none');
-         };
+           var groups = drawLayer.selectAll('.midpoint').filter(midpointFilter).data(Object.values(midpoints), function (d) {
+             return d.id;
+           });
+           groups.exit().remove();
+           var enter = groups.enter().insert('g', ':first-child').attr('class', 'midpoint');
+           enter.append('polygon').attr('points', '-6,8 10,0 -6,-8').attr('class', 'shadow');
+           enter.append('polygon').attr('points', '-3,4 5,0 -3,-4').attr('class', 'fill');
+           groups = groups.merge(enter).attr('transform', function (d) {
+             var translate = svgPointTransform(projection);
+             var a = graph.entity(d.edge[0]);
+             var b = graph.entity(d.edge[1]);
+             var angle = geoAngle(a, b, projection) * (180 / Math.PI);
+             return translate(d) + ' rotate(' + angle + ')';
+           }).call(svgTagClasses().tags(function (d) {
+             return d.parents[0].tags;
+           })); // Propagate data bindings.

 
 

-         source.label = function () {
-           return _t.html('background.none');
-         };
+           groups.select('polygon.shadow');
+           groups.select('polygon.fill'); // Draw touch targets..

 
 

-         source.imageryUsed = function () {
-           return null;
-         };
+           touchLayer.call(drawTargets, graph, Object.values(midpoints), midpointFilter);
+         }

 
 

-         source.area = function () {
-           return -1; // sources in background pane are sorted by area
-         };
+         return drawMidpoints;
+       }

 
 

-         return source;
-       };
+       function svgPoints(projection, context) {
+         function markerPath(selection, klass) {
+           selection.attr('class', klass).attr('transform', 'translate(-8, -23)').attr('d', 'M 17,8 C 17,13 11,21 8.5,23.5 C 6,21 0,13 0,8 C 0,4 4,-0.5 8.5,-0.5 C 13,-0.5 17,4 17,8 z');
+         }

 
 

-       rendererBackgroundSource.Custom = function (template) {
-         var source = rendererBackgroundSource({
-           id: 'custom',
-           template: template
-         });
+         function sortY(a, b) {
+           return b.loc[1] - a.loc[1];
+         } // Avoid exit/enter if we're just moving stuff around.
+         // The node will get a new version but we only need to run the update selection.

 
 

-         source.name = function () {
-           return _t('background.custom');
-         };

 
 

-         source.label = function () {
-           return _t.html('background.custom');
-         };
+         function fastEntityKey(d) {
+           var mode = context.mode();
+           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
+           return isMoving ? d.id : osmEntity.key(d);
+         }

 
 

-         source.imageryUsed = function () {
-           // sanitize personal connection tokens - #6801
-           var cleaned = source.template(); // from query string parameters
+         function drawTargets(selection, graph, entities, filter) {
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var getTransform = svgPointTransform(projection).geojson;
+           var activeID = context.activeID();
+           var data = [];
+           entities.forEach(function (node) {
+             if (activeID === node.id) return; // draw no target on the activeID

 
 

-           if (cleaned.indexOf('?') !== -1) {
-             var parts = cleaned.split('?', 2);
-             var qs = utilStringQs(parts[1]);
-             ['access_token', 'connectId', 'token'].forEach(function (param) {
-               if (qs[param]) {
-                 qs[param] = '{apikey}';
-               }
+             data.push({
+               type: 'Feature',
+               id: node.id,
+               properties: {
+                 target: true,
+                 entity: node
+               },
+               geometry: node.asGeoJSON()

              });
              });

-             cleaned = parts[0] + '?' + utilQsString(qs, true); // true = soft encode
-           } // from wms/wmts api path parameters
-
+           });
+           var targets = selection.selectAll('.point.target').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(data, function key(d) {
+             return d.id;
+           }); // exit

 
 

-           cleaned = cleaned.replace(/token\/(\w+)/, 'token/{apikey}');
-           return 'Custom (' + cleaned + ' )';
-         };
+           targets.exit().remove(); // enter/update

 
 

-         source.area = function () {
-           return -2; // sources in background pane are sorted by area
-         };
+           targets.enter().append('rect').attr('x', -10).attr('y', -26).attr('width', 20).attr('height', 30).merge(targets).attr('class', function (d) {
+             return 'node point target ' + fillClass + d.id;
+           }).attr('transform', getTransform);
+         }

 
 

-         return source;
-       };
+         function drawPoints(selection, graph, entities, filter) {
+           var wireframe = context.surface().classed('fill-wireframe');
+           var zoom = geoScaleToZoom(projection.scale());
+           var base = context.history().base(); // Points with a direction will render as vertices at higher zooms..

 
 

-       function rendererTileLayer(context) {
-         var transformProp = utilPrefixCSSProperty('Transform');
-         var tiler = utilTiler();
-         var _tileSize = 256;
+           function renderAsPoint(entity) {
+             return entity.geometry(graph) === 'point' && !(zoom >= 18 && entity.directions(graph, projection).length);
+           } // All points will render as vertices in wireframe mode too..

 
 

-         var _projection;

 
 

-         var _cache = {};
+           var points = wireframe ? [] : entities.filter(renderAsPoint);
+           points.sort(sortY);
+           var drawLayer = selection.selectAll('.layer-osm.points .points-group.points');
+           var touchLayer = selection.selectAll('.layer-touch.points'); // Draw points..

 
 

-         var _tileOrigin;
+           var groups = drawLayer.selectAll('g.point').filter(filter).data(points, fastEntityKey);
+           groups.exit().remove();
+           var enter = groups.enter().append('g').attr('class', function (d) {
+             return 'node point ' + d.id;
+           }).order();
+           enter.append('path').call(markerPath, 'shadow');
+           enter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
+           enter.append('path').call(markerPath, 'stroke');
+           enter.append('use').attr('transform', 'translate(-5, -19)').attr('class', 'icon').attr('width', '11px').attr('height', '11px');
+           groups = groups.merge(enter).attr('transform', svgPointTransform(projection)).classed('added', function (d) {
+             return !base.entities[d.id]; // if it doesn't exist in the base graph, it's new
+           }).classed('moved', function (d) {
+             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].loc, base.entities[d.id].loc);
+           }).classed('retagged', function (d) {
+             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
+           }).call(svgTagClasses());
+           groups.select('.shadow'); // propagate bound data

 
 

-         var _zoom;
+           groups.select('.stroke'); // propagate bound data

 
 

-         var _source;
+           groups.select('.icon') // propagate bound data
+           .attr('xlink:href', function (entity) {
+             var preset = _mainPresetIndex.match(entity, graph);
+             var picon = preset && preset.icon;

 
 

-         function tileSizeAtZoom(d, z) {
-           var EPSILON = 0.002; // close seams
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return '#' + picon + (isMaki ? '-11' : '');
+             }
+           }); // Draw touch targets..

 
 

-           return _tileSize * Math.pow(2, z - d[2]) / _tileSize + EPSILON;
+           touchLayer.call(drawTargets, graph, points, filter);

          }
 
          }
 

-         function atZoom(t, distance) {
-           var power = Math.pow(2, distance);
-           return [Math.floor(t[0] * power), Math.floor(t[1] * power), t[2] + distance];
+         return drawPoints;
+       }
+
+       function svgTurns(projection, context) {
+         function icon(turn) {
+           var u = turn.u ? '-u' : '';
+           if (turn.no) return '#iD-turn-no' + u;
+           if (turn.only) return '#iD-turn-only' + u;
+           return '#iD-turn-yes' + u;

          }
 
          }
 

-         function lookUp(d) {
-           for (var up = -1; up > -d[2]; up--) {
-             var tile = atZoom(d, up);
+         function drawTurns(selection, graph, turns) {
+           function turnTransform(d) {
+             var pxRadius = 50;
+             var toWay = graph.entity(d.to.way);
+             var toPoints = graph.childNodes(toWay).map(function (n) {
+               return n.loc;
+             }).map(projection);
+             var toLength = geoPathLength(toPoints);
+             var mid = toLength / 2; // midpoint of destination way

 
 

-             if (_cache[_source.url(tile)] !== false) {
-               return tile;
-             }
+             var toNode = graph.entity(d.to.node);
+             var toVertex = graph.entity(d.to.vertex);
+             var a = geoAngle(toVertex, toNode, projection);
+             var o = projection(toVertex.loc);
+             var r = d.u ? 0 // u-turn: no radius
+             : !toWay.__via ? pxRadius // leaf way: put marker at pxRadius
+             : Math.min(mid, pxRadius); // via way: prefer pxRadius, fallback to mid for very short ways
+
+             return 'translate(' + (r * Math.cos(a) + o[0]) + ',' + (r * Math.sin(a) + o[1]) + ') ' + 'rotate(' + a * 180 / Math.PI + ')';

            }
            }

-         }

 
 

-         function uniqueBy(a, n) {
-           var o = [];
-           var seen = {};
+           var drawLayer = selection.selectAll('.layer-osm.points .points-group.turns');
+           var touchLayer = selection.selectAll('.layer-touch.turns'); // Draw turns..

 
 

-           for (var i = 0; i < a.length; i++) {
-             if (seen[a[i][n]] === undefined) {
-               o.push(a[i]);
-               seen[a[i][n]] = true;
-             }
-           }
+           var groups = drawLayer.selectAll('g.turn').data(turns, function (d) {
+             return d.key;
+           }); // exit

 
 

-           return o;
-         }
+           groups.exit().remove(); // enter

 
 

-         function addSource(d) {
-           d.push(_source.url(d));
-           return d;
-         } // Update tiles based on current state of `projection`.
+           var groupsEnter = groups.enter().append('g').attr('class', function (d) {
+             return 'turn ' + d.key;
+           });
+           var turnsEnter = groupsEnter.filter(function (d) {
+             return !d.u;
+           });
+           turnsEnter.append('rect').attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
+           turnsEnter.append('use').attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
+           var uEnter = groupsEnter.filter(function (d) {
+             return d.u;
+           });
+           uEnter.append('circle').attr('r', '16');
+           uEnter.append('use').attr('transform', 'translate(-16, -16)').attr('width', '32').attr('height', '32'); // update

 
 

+           groups = groups.merge(groupsEnter).attr('opacity', function (d) {
+             return d.direct === false ? '0.7' : null;
+           }).attr('transform', turnTransform);
+           groups.select('use').attr('xlink:href', icon);
+           groups.select('rect'); // propagate bound data

 
 

-         function background(selection) {
-           _zoom = geoScaleToZoom(_projection.scale(), _tileSize);
-           var pixelOffset;
+           groups.select('circle'); // propagate bound data
+           // Draw touch targets..

 
 

-           if (_source) {
-             pixelOffset = [_source.offset()[0] * Math.pow(2, _zoom), _source.offset()[1] * Math.pow(2, _zoom)];
-           } else {
-             pixelOffset = [0, 0];
-           }
+           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           groups = touchLayer.selectAll('g.turn').data(turns, function (d) {
+             return d.key;
+           }); // exit

 
 

-           var translate = [_projection.translate()[0] + pixelOffset[0], _projection.translate()[1] + pixelOffset[1]];
-           tiler.scale(_projection.scale() * 2 * Math.PI).translate(translate);
-           _tileOrigin = [_projection.scale() * Math.PI - translate[0], _projection.scale() * Math.PI - translate[1]];
-           render(selection);
-         } // Derive the tiles onscreen, remove those offscreen and position them.
-         // Important that this part not depend on `_projection` because it's
-         // rentered when tiles load/error (see #644).
+           groups.exit().remove(); // enter

 
 

+           groupsEnter = groups.enter().append('g').attr('class', function (d) {
+             return 'turn ' + d.key;
+           });
+           turnsEnter = groupsEnter.filter(function (d) {
+             return !d.u;
+           });
+           turnsEnter.append('rect').attr('class', 'target ' + fillClass).attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
+           uEnter = groupsEnter.filter(function (d) {
+             return d.u;
+           });
+           uEnter.append('circle').attr('class', 'target ' + fillClass).attr('r', '16'); // update

 
 

-         function render(selection) {
-           if (!_source) return;
-           var requests = [];
-           var showDebug = context.getDebug('tile') && !_source.overlay;
+           groups = groups.merge(groupsEnter).attr('transform', turnTransform);
+           groups.select('rect'); // propagate bound data

 
 

-           if (_source.validZoom(_zoom)) {
-             tiler.skipNullIsland(!!_source.overlay);
-             tiler().forEach(function (d) {
-               addSource(d);
-               if (d[3] === '') return;
-               if (typeof d[3] !== 'string') return; // Workaround for #2295
+           groups.select('circle'); // propagate bound data

 
 

-               requests.push(d);
+           return this;
+         }

 
 

-               if (_cache[d[3]] === false && lookUp(d)) {
-                 requests.push(addSource(lookUp(d)));
-               }
-             });
-             requests = uniqueBy(requests, 3).filter(function (r) {
-               // don't re-request tiles which have failed in the past
-               return _cache[r[3]] !== false;
-             });
-           }
+         return drawTurns;
+       }

 
 

-           function load(d3_event, d) {
-             _cache[d[3]] = true;
-             select(this).on('error', null).on('load', null).classed('tile-loaded', true);
-             render(selection);
-           }
+       function svgVertices(projection, context) {
+         var radiuses = {
+           //       z16-, z17,   z18+,  w/icon
+           shadow: [6, 7.5, 7.5, 12],
+           stroke: [2.5, 3.5, 3.5, 8],
+           fill: [1, 1.5, 1.5, 1.5]
+         };

 
 

-           function error(d3_event, d) {
-             _cache[d[3]] = false;
-             select(this).on('error', null).on('load', null).remove();
-             render(selection);
-           }
+         var _currHoverTarget;

 
 

-           function imageTransform(d) {
-             var ts = _tileSize * Math.pow(2, _zoom - d[2]);
+         var _currPersistent = {};
+         var _currHover = {};
+         var _prevHover = {};
+         var _currSelected = {};
+         var _prevSelected = {};
+         var _radii = {};

 
 

-             var scale = tileSizeAtZoom(d, _zoom);
-             return 'translate(' + (d[0] * ts - _tileOrigin[0]) + 'px,' + (d[1] * ts - _tileOrigin[1]) + 'px) ' + 'scale(' + scale + ',' + scale + ')';
-           }
+         function sortY(a, b) {
+           return b.loc[1] - a.loc[1];
+         } // Avoid exit/enter if we're just moving stuff around.
+         // The node will get a new version but we only need to run the update selection.

 
 

-           function tileCenter(d) {
-             var ts = _tileSize * Math.pow(2, _zoom - d[2]);

 
 

-             return [d[0] * ts - _tileOrigin[0] + ts / 2, d[1] * ts - _tileOrigin[1] + ts / 2];
-           }
+         function fastEntityKey(d) {
+           var mode = context.mode();
+           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
+           return isMoving ? d.id : osmEntity.key(d);
+         }

 
 

-           function debugTransform(d) {
-             var coord = tileCenter(d);
-             return 'translate(' + coord[0] + 'px,' + coord[1] + 'px)';
-           } // Pick a representative tile near the center of the viewport
-           // (This is useful for sampling the imagery vintage)
+         function draw(selection, graph, vertices, sets, filter) {
+           sets = sets || {
+             selected: {},
+             important: {},
+             hovered: {}
+           };
+           var icons = {};
+           var directions = {};
+           var wireframe = context.surface().classed('fill-wireframe');
+           var zoom = geoScaleToZoom(projection.scale());
+           var z = zoom < 17 ? 0 : zoom < 18 ? 1 : 2;
+           var activeID = context.activeID();
+           var base = context.history().base();

 
 

+           function getIcon(d) {
+             // always check latest entity, as fastEntityKey avoids enter/exit now
+             var entity = graph.entity(d.id);
+             if (entity.id in icons) return icons[entity.id];
+             icons[entity.id] = entity.hasInterestingTags() && _mainPresetIndex.match(entity, graph).icon;
+             return icons[entity.id];
+           } // memoize directions results, return false for empty arrays (for use in filter)

 
 

-           var dims = tiler.size();
-           var mapCenter = [dims[0] / 2, dims[1] / 2];
-           var minDist = Math.max(dims[0], dims[1]);
-           var nearCenter;
-           requests.forEach(function (d) {
-             var c = tileCenter(d);
-             var dist = geoVecLength(c, mapCenter);

 
 

-             if (dist < minDist) {
-               minDist = dist;
-               nearCenter = d;
-             }
-           });
-           var image = selection.selectAll('img').data(requests, function (d) {
-             return d[3];
-           });
-           image.exit().style(transformProp, imageTransform).classed('tile-removing', true).classed('tile-center', false).each(function () {
-             var tile = select(this);
-             window.setTimeout(function () {
-               if (tile.classed('tile-removing')) {
-                 tile.remove();
-               }
-             }, 300);
-           });
-           image.enter().append('img').attr('class', 'tile').attr('draggable', 'false').style('width', _tileSize + 'px').style('height', _tileSize + 'px').attr('src', function (d) {
-             return d[3];
-           }).on('error', error).on('load', load).merge(image).style(transformProp, imageTransform).classed('tile-debug', showDebug).classed('tile-removing', false).classed('tile-center', function (d) {
-             return d === nearCenter;
-           });
-           var debug = selection.selectAll('.tile-label-debug').data(showDebug ? requests : [], function (d) {
-             return d[3];
-           });
-           debug.exit().remove();
+           function getDirections(entity) {
+             if (entity.id in directions) return directions[entity.id];
+             var angles = entity.directions(graph, projection);
+             directions[entity.id] = angles.length ? angles : false;
+             return angles;
+           }

 
 

-           if (showDebug) {
-             var debugEnter = debug.enter().append('div').attr('class', 'tile-label-debug');
-             debugEnter.append('div').attr('class', 'tile-label-debug-coord');
-             debugEnter.append('div').attr('class', 'tile-label-debug-vintage');
-             debug = debug.merge(debugEnter);
-             debug.style(transformProp, debugTransform);
-             debug.selectAll('.tile-label-debug-coord').html(function (d) {
-               return d[2] + ' / ' + d[0] + ' / ' + d[1];
-             });
-             debug.selectAll('.tile-label-debug-vintage').each(function (d) {
-               var span = select(this);
-               var center = context.projection.invert(tileCenter(d));
+           function updateAttributes(selection) {
+             ['shadow', 'stroke', 'fill'].forEach(function (klass) {
+               var rads = radiuses[klass];
+               selection.selectAll('.' + klass).each(function (entity) {
+                 var i = z && getIcon(entity);
+                 var r = rads[i ? 3 : z]; // slightly increase the size of unconnected endpoints #3775

 
 

-               _source.getMetadata(center, d, function (err, result) {
-                 span.html(result && result.vintage && result.vintage.range || _t('info_panels.background.vintage') + ': ' + _t('info_panels.background.unknown'));
+                 if (entity.id !== activeID && entity.isEndpoint(graph) && !entity.isConnected(graph)) {
+                   r += 1.5;
+                 }
+
+                 if (klass === 'shadow') {
+                   // remember this value, so we don't need to
+                   _radii[entity.id] = r; // recompute it when we draw the touch targets
+                 }
+
+                 select(this).attr('r', r).attr('visibility', i && klass === 'fill' ? 'hidden' : null);

                });
              });
            }
                });
              });
            }

-         }
-
-         background.projection = function (val) {
-           if (!arguments.length) return _projection;
-           _projection = val;
-           return background;
-         };

 
 

-         background.dimensions = function (val) {
-           if (!arguments.length) return tiler.size();
-           tiler.size(val);
-           return background;
-         };
+           vertices.sort(sortY);
+           var groups = selection.selectAll('g.vertex').filter(filter).data(vertices, fastEntityKey); // exit

 
 

-         background.source = function (val) {
-           if (!arguments.length) return _source;
-           _source = val;
-           _tileSize = _source.tileSize;
-           _cache = {};
-           tiler.tileSize(_source.tileSize).zoomExtent(_source.zoomExtent);
-           return background;
-         };
+           groups.exit().remove(); // enter

 
 

-         return background;
-       }
+           var enter = groups.enter().append('g').attr('class', function (d) {
+             return 'node vertex ' + d.id;
+           }).order();
+           enter.append('circle').attr('class', 'shadow');
+           enter.append('circle').attr('class', 'stroke'); // Vertices with tags get a fill.

 
 

-       var _imageryIndex = null;
-       function rendererBackground(context) {
-         var dispatch$1 = dispatch('change');
-         var detected = utilDetect();
-         var baseLayer = rendererTileLayer(context).projection(context.projection);
-         var _isValid = true;
-         var _overlayLayers = [];
-         var _brightness = 1;
-         var _contrast = 1;
-         var _saturation = 1;
-         var _sharpness = 1;
+           enter.filter(function (d) {
+             return d.hasInterestingTags();
+           }).append('circle').attr('class', 'fill'); // update

 
 

-         function ensureImageryIndex() {
-           return _mainFileFetcher.get('imagery').then(function (sources) {
-             if (_imageryIndex) return _imageryIndex;
-             _imageryIndex = {
-               imagery: sources,
-               features: {}
-             }; // use which-polygon to support efficient index and querying for imagery
+           groups = groups.merge(enter).attr('transform', svgPointTransform(projection)).classed('sibling', function (d) {
+             return d.id in sets.selected;
+           }).classed('shared', function (d) {
+             return graph.isShared(d);
+           }).classed('endpoint', function (d) {
+             return d.isEndpoint(graph);
+           }).classed('added', function (d) {
+             return !base.entities[d.id]; // if it doesn't exist in the base graph, it's new
+           }).classed('moved', function (d) {
+             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].loc, base.entities[d.id].loc);
+           }).classed('retagged', function (d) {
+             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
+           }).call(updateAttributes); // Vertices with icons get a `use`.

 
 

-             var features = sources.map(function (source) {
-               if (!source.polygon) return null; // workaround for editor-layer-index weirdness..
-               // Add an extra array nest to each element in `source.polygon`
-               // so the rings are not treated as a bunch of holes:
-               // what we have: [ [[outer],[hole],[hole]] ]
-               // what we want: [ [[outer]],[[outer]],[[outer]] ]
+           var iconUse = groups.selectAll('.icon').data(function data(d) {
+             return zoom >= 17 && getIcon(d) ? [d] : [];
+           }, fastEntityKey); // exit

 
 

-               var rings = source.polygon.map(function (ring) {
-                 return [ring];
-               });
-               var feature = {
-                 type: 'Feature',
-                 properties: {
-                   id: source.id
-                 },
-                 geometry: {
-                   type: 'MultiPolygon',
-                   coordinates: rings
-                 }
-               };
-               _imageryIndex.features[source.id] = feature;
-               return feature;
-             }).filter(Boolean);
-             _imageryIndex.query = whichPolygon_1({
-               type: 'FeatureCollection',
-               features: features
-             }); // Instantiate `rendererBackgroundSource` objects for each source
+           iconUse.exit().remove(); // enter

 
 

-             _imageryIndex.backgrounds = sources.map(function (source) {
-               if (source.type === 'bing') {
-                 return rendererBackgroundSource.Bing(source, dispatch$1);
-               } else if (/^EsriWorldImagery/.test(source.id)) {
-                 return rendererBackgroundSource.Esri(source);
-               } else {
-                 return rendererBackgroundSource(source);
-               }
-             }); // Add 'None'
+           iconUse.enter().append('use').attr('class', 'icon').attr('width', '11px').attr('height', '11px').attr('transform', 'translate(-5.5, -5.5)').attr('xlink:href', function (d) {
+             var picon = getIcon(d);
+             var isMaki = /^maki-/.test(picon);
+             return '#' + picon + (isMaki ? '-11' : '');
+           }); // Vertices with directions get viewfields

 
 

-             _imageryIndex.backgrounds.unshift(rendererBackgroundSource.None()); // Add 'Custom'
+           var dgroups = groups.selectAll('.viewfieldgroup').data(function data(d) {
+             return zoom >= 18 && getDirections(d) ? [d] : [];
+           }, fastEntityKey); // exit

 
 

+           dgroups.exit().remove(); // enter/update

 
 

-             var template = corePreferences('background-custom-template') || '';
-             var custom = rendererBackgroundSource.Custom(template);
+           dgroups = dgroups.enter().insert('g', '.shadow').attr('class', 'viewfieldgroup').merge(dgroups);
+           var viewfields = dgroups.selectAll('.viewfield').data(getDirections, function key(d) {
+             return osmEntity.key(d);
+           }); // exit

 
 

-             _imageryIndex.backgrounds.unshift(custom);
+           viewfields.exit().remove(); // enter/update

 
 

-             return _imageryIndex;
+           viewfields.enter().append('path').attr('class', 'viewfield').attr('d', 'M0,0H0').merge(viewfields).attr('marker-start', 'url(#ideditor-viewfield-marker' + (wireframe ? '-wireframe' : '') + ')').attr('transform', function (d) {
+             return 'rotate(' + d + ')';

            });
          }
 
            });
          }
 

-         function background(selection) {
-           var currSource = baseLayer.source(); // If we are displaying an Esri basemap at high zoom,
-           // check its tilemap to see how high the zoom can go
-
-           if (context.map().zoom() > 18) {
-             if (currSource && /^EsriWorldImagery/.test(currSource.id)) {
-               var center = context.map().center();
-               currSource.fetchTilemap(center);
-             }
-           } // Is the imagery valid here? - #4827
-
-
-           var sources = background.sources(context.map().extent());
-           var wasValid = _isValid;
-           _isValid = !!sources.filter(function (d) {
-             return d === currSource;
-           }).length;
-
-           if (wasValid !== _isValid) {
-             // change in valid status
-             background.updateImagery();
-           }
+         function drawTargets(selection, graph, entities, filter) {
+           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
+           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
+           var getTransform = svgPointTransform(projection).geojson;
+           var activeID = context.activeID();
+           var data = {
+             targets: [],
+             nopes: []
+           };
+           entities.forEach(function (node) {
+             if (activeID === node.id) return; // draw no target on the activeID

 
 

-           var baseFilter = '';
+             var vertexType = svgPassiveVertex(node, graph, activeID);

 
 

-           if (detected.cssfilters) {
-             if (_brightness !== 1) {
-               baseFilter += " brightness(".concat(_brightness, ")");
+             if (vertexType !== 0) {
+               // passive or adjacent - allow to connect
+               data.targets.push({
+                 type: 'Feature',
+                 id: node.id,
+                 properties: {
+                   target: true,
+                   entity: node
+                 },
+                 geometry: node.asGeoJSON()
+               });
+             } else {
+               data.nopes.push({
+                 type: 'Feature',
+                 id: node.id + '-nope',
+                 properties: {
+                   nope: true,
+                   target: true,
+                   entity: node
+                 },
+                 geometry: node.asGeoJSON()
+               });

              }
              }

+           }); // Targets allow hover and vertex snapping

 
 

-             if (_contrast !== 1) {
-               baseFilter += " contrast(".concat(_contrast, ")");
-             }
+           var targets = selection.selectAll('.vertex.target-allowed').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(data.targets, function key(d) {
+             return d.id;
+           }); // exit

 
 

-             if (_saturation !== 1) {
-               baseFilter += " saturate(".concat(_saturation, ")");
-             }
+           targets.exit().remove(); // enter/update

 
 

-             if (_sharpness < 1) {
-               // gaussian blur
-               var blur = d3_interpolateNumber(0.5, 5)(1 - _sharpness);
-               baseFilter += " blur(".concat(blur, "px)");
-             }
-           }
+           targets.enter().append('circle').attr('r', function (d) {
+             return _radii[d.id] || radiuses.shadow[3];
+           }).merge(targets).attr('class', function (d) {
+             return 'node vertex target target-allowed ' + targetClass + d.id;
+           }).attr('transform', getTransform); // NOPE

 
 

-           var base = selection.selectAll('.layer-background').data([0]);
-           base = base.enter().insert('div', '.layer-data').attr('class', 'layer layer-background').merge(base);
+           var nopes = selection.selectAll('.vertex.target-nope').filter(function (d) {
+             return filter(d.properties.entity);
+           }).data(data.nopes, function key(d) {
+             return d.id;
+           }); // exit

 
 

-           if (detected.cssfilters) {
-             base.style('filter', baseFilter || null);
-           } else {
-             base.style('opacity', _brightness);
-           }
+           nopes.exit().remove(); // enter/update

 
 

-           var imagery = base.selectAll('.layer-imagery').data([0]);
-           imagery.enter().append('div').attr('class', 'layer layer-imagery').merge(imagery).call(baseLayer);
-           var maskFilter = '';
-           var mixBlendMode = '';
+           nopes.enter().append('circle').attr('r', function (d) {
+             return _radii[d.properties.entity.id] || radiuses.shadow[3];
+           }).merge(nopes).attr('class', function (d) {
+             return 'node vertex target target-nope ' + nopeClass + d.id;
+           }).attr('transform', getTransform);
+         } // Points can also render as vertices:
+         // 1. in wireframe mode or
+         // 2. at higher zooms if they have a direction

 
 

-           if (detected.cssfilters && _sharpness > 1) {
-             // apply unsharp mask
-             mixBlendMode = 'overlay';
-             maskFilter = 'saturate(0) blur(3px) invert(1)';
-             var contrast = _sharpness - 1;
-             maskFilter += " contrast(".concat(contrast, ")");
-             var brightness = d3_interpolateNumber(1, 0.85)(_sharpness - 1);
-             maskFilter += " brightness(".concat(brightness, ")");
-           }

 
 

-           var mask = base.selectAll('.layer-unsharp-mask').data(detected.cssfilters && _sharpness > 1 ? [0] : []);
-           mask.exit().remove();
-           mask.enter().append('div').attr('class', 'layer layer-mask layer-unsharp-mask').merge(mask).call(baseLayer).style('filter', maskFilter || null).style('mix-blend-mode', mixBlendMode || null);
-           var overlays = selection.selectAll('.layer-overlay').data(_overlayLayers, function (d) {
-             return d.source().name();
-           });
-           overlays.exit().remove();
-           overlays.enter().insert('div', '.layer-data').attr('class', 'layer layer-overlay').merge(overlays).each(function (layer, i, nodes) {
-             return select(nodes[i]).call(layer);
-           });
+         function renderAsVertex(entity, graph, wireframe, zoom) {
+           var geometry = entity.geometry(graph);
+           return geometry === 'vertex' || geometry === 'point' && (wireframe || zoom >= 18 && entity.directions(graph, projection).length);

          }
 
          }
 

-         background.updateImagery = function () {
-           var currSource = baseLayer.source();
-           if (context.inIntro() || !currSource) return;
+         function isEditedNode(node, base, head) {
+           var baseNode = base.entities[node.id];
+           var headNode = head.entities[node.id];
+           return !headNode || !baseNode || !fastDeepEqual(headNode.tags, baseNode.tags) || !fastDeepEqual(headNode.loc, baseNode.loc);
+         }

 
 

-           var o = _overlayLayers.filter(function (d) {
-             return !d.source().isLocatorOverlay() && !d.source().isHidden();
-           }).map(function (d) {
-             return d.source().id;
-           }).join(',');
+         function getSiblingAndChildVertices(ids, graph, wireframe, zoom) {
+           var results = {};
+           var seenIds = {};

 
 

-           var meters = geoOffsetToMeters(currSource.offset());
-           var EPSILON = 0.01;
-           var x = +meters[0].toFixed(2);
-           var y = +meters[1].toFixed(2);
-           var hash = utilStringQs(window.location.hash);
-           var id = currSource.id;
+           function addChildVertices(entity) {
+             // avoid redundant work and infinite recursion of circular relations
+             if (seenIds[entity.id]) return;
+             seenIds[entity.id] = true;
+             var geometry = entity.geometry(graph);

 
 

-           if (id === 'custom') {
-             id = "custom:".concat(currSource.template());
-           }
+             if (!context.features().isHiddenFeature(entity, graph, geometry)) {
+               var i;

 
 

-           if (id) {
-             hash.background = id;
-           } else {
-             delete hash.background;
-           }
+               if (entity.type === 'way') {
+                 for (i = 0; i < entity.nodes.length; i++) {
+                   var child = graph.hasEntity(entity.nodes[i]);

 
 

-           if (o) {
-             hash.overlays = o;
-           } else {
-             delete hash.overlays;
-           }
+                   if (child) {
+                     addChildVertices(child);
+                   }
+                 }
+               } else if (entity.type === 'relation') {
+                 for (i = 0; i < entity.members.length; i++) {
+                   var member = graph.hasEntity(entity.members[i].id);

 
 

-           if (Math.abs(x) > EPSILON || Math.abs(y) > EPSILON) {
-             hash.offset = "".concat(x, ",").concat(y);
-           } else {
-             delete hash.offset;
+                   if (member) {
+                     addChildVertices(member);
+                   }
+                 }
+               } else if (renderAsVertex(entity, graph, wireframe, zoom)) {
+                 results[entity.id] = entity;
+               }
+             }

            }
 
            }
 

-           if (!window.mocha) {
-             window.location.replace('#' + utilQsString(hash, true));
-           }
+           ids.forEach(function (id) {
+             var entity = graph.hasEntity(id);
+             if (!entity) return;

 
 

-           var imageryUsed = [];
-           var photoOverlaysUsed = [];
-           var currUsed = currSource.imageryUsed();
+             if (entity.type === 'node') {
+               if (renderAsVertex(entity, graph, wireframe, zoom)) {
+                 results[entity.id] = entity;
+                 graph.parentWays(entity).forEach(function (entity) {
+                   addChildVertices(entity);
+                 });
+               }
+             } else {
+               // way, relation
+               addChildVertices(entity);
+             }
+           });
+           return results;
+         }

 
 

-           if (currUsed && _isValid) {
-             imageryUsed.push(currUsed);
-           }
+         function drawVertices(selection, graph, entities, filter, extent, fullRedraw) {
+           var wireframe = context.surface().classed('fill-wireframe');
+           var visualDiff = context.surface().classed('highlight-edited');
+           var zoom = geoScaleToZoom(projection.scale());
+           var mode = context.mode();
+           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
+           var base = context.history().base();
+           var drawLayer = selection.selectAll('.layer-osm.points .points-group.vertices');
+           var touchLayer = selection.selectAll('.layer-touch.points');

 
 

-           _overlayLayers.filter(function (d) {
-             return !d.source().isLocatorOverlay() && !d.source().isHidden();
-           }).forEach(function (d) {
-             return imageryUsed.push(d.source().imageryUsed());
-           });
+           if (fullRedraw) {
+             _currPersistent = {};
+             _radii = {};
+           } // Collect important vertices from the `entities` list..
+           // (during a partial redraw, it will not contain everything)

 
 

-           var dataLayer = context.layers().layer('data');

 
 

-           if (dataLayer && dataLayer.enabled() && dataLayer.hasData()) {
-             imageryUsed.push(dataLayer.getSrc());
-           }
+           for (var i = 0; i < entities.length; i++) {
+             var entity = entities[i];
+             var geometry = entity.geometry(graph);
+             var keep = false; // a point that looks like a vertex..

 
 

-           var photoOverlayLayers = {
-             streetside: 'Bing Streetside',
-             mapillary: 'Mapillary Images',
-             'mapillary-map-features': 'Mapillary Map Features',
-             'mapillary-signs': 'Mapillary Signs',
-             openstreetcam: 'OpenStreetCam Images'
-           };
+             if (geometry === 'point' && renderAsVertex(entity, graph, wireframe, zoom)) {
+               _currPersistent[entity.id] = entity;
+               keep = true; // a vertex of some importance..
+             } else if (geometry === 'vertex' && (entity.hasInterestingTags() || entity.isEndpoint(graph) || entity.isConnected(graph) || visualDiff && isEditedNode(entity, base, graph))) {
+               _currPersistent[entity.id] = entity;
+               keep = true;
+             } // whatever this is, it's not a persistent vertex..

 
 

-           for (var layerID in photoOverlayLayers) {
-             var layer = context.layers().layer(layerID);

 
 

-             if (layer && layer.enabled()) {
-               photoOverlaysUsed.push(layerID);
-               imageryUsed.push(photoOverlayLayers[layerID]);
+             if (!keep && !fullRedraw) {
+               delete _currPersistent[entity.id];

              }
              }

-           }
+           } // 3 sets of vertices to consider:

 
 

-           context.history().imageryUsed(imageryUsed);
-           context.history().photoOverlaysUsed(photoOverlaysUsed);
-         };

 
 

-         var _checkedBlocklists;
+           var sets = {
+             persistent: _currPersistent,
+             // persistent = important vertices (render always)
+             selected: _currSelected,
+             // selected + siblings of selected (render always)
+             hovered: _currHover // hovered + siblings of hovered (render only in draw modes)

 
 

-         background.sources = function (extent, zoom, includeCurrent) {
-           if (!_imageryIndex) return []; // called before init()?
+           };
+           var all = Object.assign({}, isMoving ? _currHover : {}, _currSelected, _currPersistent); // Draw the vertices..
+           // The filter function controls the scope of what objects d3 will touch (exit/enter/update)
+           // Adjust the filter function to expand the scope beyond whatever entities were passed in.

 
 

-           var visible = {};
-           (_imageryIndex.query.bbox(extent.rectangle(), true) || []).forEach(function (d) {
-             return visible[d.id] = true;
-           });
-           var currSource = baseLayer.source();
-           var osm = context.connection();
-           var blocklists = osm && osm.imageryBlocklists();
+           var filterRendered = function filterRendered(d) {
+             return d.id in _currPersistent || d.id in _currSelected || d.id in _currHover || filter(d);
+           };

 
 

-           if (blocklists && blocklists !== _checkedBlocklists) {
-             _imageryIndex.backgrounds.forEach(function (source) {
-               source.isBlocked = blocklists.some(function (blocklist) {
-                 return blocklist.test(source.template());
-               });
-             });
+           drawLayer.call(draw, graph, currentVisible(all), sets, filterRendered); // Draw touch targets..
+           // When drawing, render all targets (not just those affected by a partial redraw)

 
 

-             _checkedBlocklists = blocklists;
-           }
+           var filterTouch = function filterTouch(d) {
+             return isMoving ? true : filterRendered(d);
+           };

 
 

-           return _imageryIndex.backgrounds.filter(function (source) {
-             if (includeCurrent && currSource === source) return true; // optionally always include the current imagery
+           touchLayer.call(drawTargets, graph, currentVisible(all), filterTouch);

 
 

-             if (source.isBlocked) return false; // even bundled sources may be blocked - #7905
+           function currentVisible(which) {
+             return Object.keys(which).map(graph.hasEntity, graph) // the current version of this entity
+             .filter(function (entity) {
+               return entity && entity.intersects(extent, graph);
+             });
+           }
+         } // partial redraw - only update the selected items..

 
 

-             if (!source.polygon) return true; // always include imagery with worldwide coverage

 
 

-             if (zoom && zoom < 6) return false; // optionally exclude local imagery at low zooms
+         drawVertices.drawSelected = function (selection, graph, extent) {
+           var wireframe = context.surface().classed('fill-wireframe');
+           var zoom = geoScaleToZoom(projection.scale());
+           _prevSelected = _currSelected || {};

 
 

-             return visible[source.id]; // include imagery visible in given extent
-           });
-         };
+           if (context.map().isInWideSelection()) {
+             _currSelected = {};
+             context.selectedIDs().forEach(function (id) {
+               var entity = graph.hasEntity(id);
+               if (!entity) return;

 
 

-         background.dimensions = function (val) {
-           if (!val) return;
-           baseLayer.dimensions(val);
+               if (entity.type === 'node') {
+                 if (renderAsVertex(entity, graph, wireframe, zoom)) {
+                   _currSelected[entity.id] = entity;
+                 }
+               }
+             });
+           } else {
+             _currSelected = getSiblingAndChildVertices(context.selectedIDs(), graph, wireframe, zoom);
+           } // note that drawVertices will add `_currSelected` automatically if needed..

 
 

-           _overlayLayers.forEach(function (layer) {
-             return layer.dimensions(val);
-           });
-         };

 
 

-         background.baseLayerSource = function (d) {
-           if (!arguments.length) return baseLayer.source(); // test source against OSM imagery blocklists..
+           var filter = function filter(d) {
+             return d.id in _prevSelected;
+           };

 
 

-           var osm = context.connection();
-           if (!osm) return background;
-           var blocklists = osm.imageryBlocklists();
-           var template = d.template();
-           var fail = false;
-           var tested = 0;
-           var regex;
+           drawVertices(selection, graph, Object.values(_prevSelected), filter, extent, false);
+         }; // partial redraw - only update the hovered items..

 
 

-           for (var i = 0; i < blocklists.length; i++) {
-             regex = blocklists[i];
-             fail = regex.test(template);
-             tested++;
-             if (fail) break;
-           } // ensure at least one test was run.

 
 

+         drawVertices.drawHover = function (selection, graph, target, extent) {
+           if (target === _currHoverTarget) return; // continue only if something changed

 
 

-           if (!tested) {
-             regex = /.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/;
-             fail = regex.test(template);
-           }
+           var wireframe = context.surface().classed('fill-wireframe');
+           var zoom = geoScaleToZoom(projection.scale());
+           _prevHover = _currHover || {};
+           _currHoverTarget = target;
+           var entity = target && target.properties && target.properties.entity;

 
 

-           baseLayer.source(!fail ? d : background.findSource('none'));
-           dispatch$1.call('change');
-           background.updateImagery();
-           return background;
-         };
+           if (entity) {
+             _currHover = getSiblingAndChildVertices([entity.id], graph, wireframe, zoom);
+           } else {
+             _currHover = {};
+           } // note that drawVertices will add `_currHover` automatically if needed..

 
 

-         background.findSource = function (id) {
-           if (!id || !_imageryIndex) return null; // called before init()?

 
 

-           return _imageryIndex.backgrounds.find(function (d) {
-             return d.id && d.id === id;
-           });
-         };
+           var filter = function filter(d) {
+             return d.id in _prevHover;
+           };

 
 

-         background.bing = function () {
-           background.baseLayerSource(background.findSource('Bing'));
+           drawVertices(selection, graph, Object.values(_prevHover), filter, extent, false);

          };
 
          };
 

-         background.showsLayer = function (d) {
-           var currSource = baseLayer.source();
-           if (!d || !currSource) return false;
-           return d.id === currSource.id || _overlayLayers.some(function (layer) {
-             return d.id === layer.source().id;
-           });
-         };
+         return drawVertices;
+       }

 
 

-         background.overlayLayerSources = function () {
-           return _overlayLayers.map(function (layer) {
-             return layer.source();
-           });
-         };
+       function utilBindOnce(target, type, listener, capture) {
+         var typeOnce = type + '.once';

 
 

-         background.toggleOverlayLayer = function (d) {
-           var layer;
+         function one() {
+           target.on(typeOnce, null);
+           listener.apply(this, arguments);
+         }

 
 

-           for (var i = 0; i < _overlayLayers.length; i++) {
-             layer = _overlayLayers[i];
+         target.on(typeOnce, one, capture);
+         return this;
+       }

 
 

-             if (layer.source() === d) {
-               _overlayLayers.splice(i, 1);
+       function defaultFilter(d3_event) {
+         return !d3_event.ctrlKey && !d3_event.button;
+       }

 
 

-               dispatch$1.call('change');
-               background.updateImagery();
-               return;
-             }
-           }
+       function defaultExtent() {
+         var e = this;

 
 

-           layer = rendererTileLayer(context).source(d).projection(context.projection).dimensions(baseLayer.dimensions());
+         if (e instanceof SVGElement) {
+           e = e.ownerSVGElement || e;

 
 

-           _overlayLayers.push(layer);
+           if (e.hasAttribute('viewBox')) {
+             e = e.viewBox.baseVal;
+             return [[e.x, e.y], [e.x + e.width, e.y + e.height]];
+           }

 
 

-           dispatch$1.call('change');
-           background.updateImagery();
-         };
+           return [[0, 0], [e.width.baseVal.value, e.height.baseVal.value]];
+         }

 
 

-         background.nudge = function (d, zoom) {
-           var currSource = baseLayer.source();
+         return [[0, 0], [e.clientWidth, e.clientHeight]];
+       }

 
 

-           if (currSource) {
-             currSource.nudge(d, zoom);
-             dispatch$1.call('change');
-             background.updateImagery();
-           }
+       function defaultWheelDelta(d3_event) {
+         return -d3_event.deltaY * (d3_event.deltaMode === 1 ? 0.05 : d3_event.deltaMode ? 1 : 0.002);
+       }

 
 

-           return background;
-         };
+       function defaultConstrain(transform, extent, translateExtent) {
+         var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
+             dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
+             dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],
+             dy1 = transform.invertY(extent[1][1]) - translateExtent[1][1];
+         return transform.translate(dx1 > dx0 ? (dx0 + dx1) / 2 : Math.min(0, dx0) || Math.max(0, dx1), dy1 > dy0 ? (dy0 + dy1) / 2 : Math.min(0, dy0) || Math.max(0, dy1));
+       }

 
 

-         background.offset = function (d) {
-           var currSource = baseLayer.source();
+       function utilZoomPan() {
+         var filter = defaultFilter,
+             extent = defaultExtent,
+             constrain = defaultConstrain,
+             wheelDelta = defaultWheelDelta,
+             scaleExtent = [0, Infinity],
+             translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
+             interpolate = interpolateZoom,
+             dispatch = dispatch$8('start', 'zoom', 'end'),
+             _wheelDelay = 150,
+             _transform = identity$2,
+             _activeGesture;

 
 

-           if (!arguments.length) {
-             return currSource && currSource.offset() || [0, 0];
-           }
+         function zoom(selection) {
+           selection.on('pointerdown.zoom', pointerdown).on('wheel.zoom', wheeled).style('touch-action', 'none').style('-webkit-tap-highlight-color', 'rgba(0,0,0,0)');
+           select(window).on('pointermove.zoompan', pointermove).on('pointerup.zoompan pointercancel.zoompan', pointerup);
+         }

 
 

-           if (currSource) {
-             currSource.offset(d);
-             dispatch$1.call('change');
-             background.updateImagery();
-           }
+         zoom.transform = function (collection, transform, point) {
+           var selection = collection.selection ? collection.selection() : collection;

 
 

-           return background;
+           if (collection !== selection) {
+             schedule(collection, transform, point);
+           } else {
+             selection.interrupt().each(function () {
+               gesture(this, arguments).start(null).zoom(null, null, typeof transform === 'function' ? transform.apply(this, arguments) : transform).end(null);
+             });
+           }

          };
 
          };
 

-         background.brightness = function (d) {
-           if (!arguments.length) return _brightness;
-           _brightness = d;
-           if (context.mode()) dispatch$1.call('change');
-           return background;
+         zoom.scaleBy = function (selection, k, p) {
+           zoom.scaleTo(selection, function () {
+             var k0 = _transform.k,
+                 k1 = typeof k === 'function' ? k.apply(this, arguments) : k;
+             return k0 * k1;
+           }, p);

          };
 
          };
 

-         background.contrast = function (d) {
-           if (!arguments.length) return _contrast;
-           _contrast = d;
-           if (context.mode()) dispatch$1.call('change');
-           return background;
+         zoom.scaleTo = function (selection, k, p) {
+           zoom.transform(selection, function () {
+             var e = extent.apply(this, arguments),
+                 t0 = _transform,
+                 p0 = !p ? centroid(e) : typeof p === 'function' ? p.apply(this, arguments) : p,
+                 p1 = t0.invert(p0),
+                 k1 = typeof k === 'function' ? k.apply(this, arguments) : k;
+             return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent);
+           }, p);

          };
 
          };
 

-         background.saturation = function (d) {
-           if (!arguments.length) return _saturation;
-           _saturation = d;
-           if (context.mode()) dispatch$1.call('change');
-           return background;
+         zoom.translateBy = function (selection, x, y) {
+           zoom.transform(selection, function () {
+             return constrain(_transform.translate(typeof x === 'function' ? x.apply(this, arguments) : x, typeof y === 'function' ? y.apply(this, arguments) : y), extent.apply(this, arguments), translateExtent);
+           });

          };
 
          };
 

-         background.sharpness = function (d) {
-           if (!arguments.length) return _sharpness;
-           _sharpness = d;
-           if (context.mode()) dispatch$1.call('change');
-           return background;
+         zoom.translateTo = function (selection, x, y, p) {
+           zoom.transform(selection, function () {
+             var e = extent.apply(this, arguments),
+                 t = _transform,
+                 p0 = !p ? centroid(e) : typeof p === 'function' ? p.apply(this, arguments) : p;
+             return constrain(identity$2.translate(p0[0], p0[1]).scale(t.k).translate(typeof x === 'function' ? -x.apply(this, arguments) : -x, typeof y === 'function' ? -y.apply(this, arguments) : -y), e, translateExtent);
+           }, p);

          };
 
          };
 

-         var _loadPromise;
-
-         background.ensureLoaded = function () {
-           if (_loadPromise) return _loadPromise;
+         function scale(transform, k) {
+           k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
+           return k === transform.k ? transform : new Transform(k, transform.x, transform.y);
+         }

 
 

-           function parseMapParams(qmap) {
-             if (!qmap) return false;
-             var params = qmap.split('/').map(Number);
-             if (params.length < 3 || params.some(isNaN)) return false;
-             return geoExtent([params[2], params[1]]); // lon,lat
-           }
+         function translate(transform, p0, p1) {
+           var x = p0[0] - p1[0] * transform.k,
+               y = p0[1] - p1[1] * transform.k;
+           return x === transform.x && y === transform.y ? transform : new Transform(transform.k, x, y);
+         }

 
 

-           var hash = utilStringQs(window.location.hash);
-           var requested = hash.background || hash.layer;
-           var extent = parseMapParams(hash.map);
-           return _loadPromise = ensureImageryIndex().then(function (imageryIndex) {
-             var first = imageryIndex.backgrounds.length && imageryIndex.backgrounds[0];
-             var best;
+         function centroid(extent) {
+           return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
+         }

 
 

-             if (!requested && extent) {
-               best = background.sources(extent).find(function (s) {
-                 return s.best();
-               });
-             } // Decide which background layer to display
+         function schedule(transition, transform, point) {
+           transition.on('start.zoom', function () {
+             gesture(this, arguments).start(null);
+           }).on('interrupt.zoom end.zoom', function () {
+             gesture(this, arguments).end(null);
+           }).tween('zoom', function () {
+             var that = this,
+                 args = arguments,
+                 g = gesture(that, args),
+                 e = extent.apply(that, args),
+                 p = !point ? centroid(e) : typeof point === 'function' ? point.apply(that, args) : point,
+                 w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
+                 a = _transform,
+                 b = typeof transform === 'function' ? transform.apply(that, args) : transform,
+                 i = interpolate(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
+             return function (t) {
+               if (t === 1) {
+                 // Avoid rounding error on end.
+                 t = b;
+               } else {
+                 var l = i(t);
+                 var k = w / l[2];
+                 t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k);
+               }

 
 

+               g.zoom(null, null, t);
+             };
+           });
+         }

 
 

-             if (requested && requested.indexOf('custom:') === 0) {
-               var template = requested.replace(/^custom:/, '');
-               var custom = background.findSource('custom');
-               background.baseLayerSource(custom.template(template));
-               corePreferences('background-custom-template', template);
-             } else {
-               background.baseLayerSource(background.findSource(requested) || best || background.findSource(corePreferences('background-last-used')) || background.findSource('Bing') || first || background.findSource('none'));
-             }
+         function gesture(that, args, clean) {
+           return !clean && _activeGesture || new Gesture(that, args);
+         }

 
 

-             var locator = imageryIndex.backgrounds.find(function (d) {
-               return d.overlay && d["default"];
-             });
+         function Gesture(that, args) {
+           this.that = that;
+           this.args = args;
+           this.active = 0;
+           this.extent = extent.apply(that, args);
+         }

 
 

-             if (locator) {
-               background.toggleOverlayLayer(locator);
+         Gesture.prototype = {
+           start: function start(d3_event) {
+             if (++this.active === 1) {
+               _activeGesture = this;
+               dispatch.call('start', this, d3_event);

              }
 
              }
 

-             var overlays = (hash.overlays || '').split(',');
-             overlays.forEach(function (overlay) {
-               overlay = background.findSource(overlay);
+             return this;
+           },
+           zoom: function zoom(d3_event, key, transform) {
+             if (this.mouse && key !== 'mouse') this.mouse[1] = transform.invert(this.mouse[0]);
+             if (this.pointer0 && key !== 'touch') this.pointer0[1] = transform.invert(this.pointer0[0]);
+             if (this.pointer1 && key !== 'touch') this.pointer1[1] = transform.invert(this.pointer1[0]);
+             _transform = transform;
+             dispatch.call('zoom', this, d3_event, key, transform);
+             return this;
+           },
+           end: function end(d3_event) {
+             if (--this.active === 0) {
+               _activeGesture = null;
+               dispatch.call('end', this, d3_event);
+             }

 
 

-               if (overlay) {
-                 background.toggleOverlayLayer(overlay);
-               }
-             });
+             return this;
+           }
+         };

 
 

-             if (hash.gpx) {
-               var gpx = context.layers().layer('data');
+         function wheeled(d3_event) {
+           if (!filter.apply(this, arguments)) return;
+           var g = gesture(this, arguments),
+               t = _transform,
+               k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))),
+               p = utilFastMouse(this)(d3_event); // If the mouse is in the same location as before, reuse it.
+           // If there were recent wheel events, reset the wheel idle timeout.

 
 

-               if (gpx) {
-                 gpx.url(hash.gpx, '.gpx');
-               }
+           if (g.wheel) {
+             if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
+               g.mouse[1] = t.invert(g.mouse[0] = p);

              }
 
              }
 

-             if (hash.offset) {
-               var offset = hash.offset.replace(/;/g, ',').split(',').map(function (n) {
-                 return !isNaN(n) && n;
-               });
+             clearTimeout(g.wheel); // Otherwise, capture the mouse point and location at the start.
+           } else {
+             g.mouse = [p, t.invert(p)];
+             interrupt(this);
+             g.start(d3_event);
+           }

 
 

-               if (offset.length === 2) {
-                 background.offset(geoMetersToOffset(offset));
-               }
-             }
-           })["catch"](function () {
-             /* ignore */
-           });
-         };
+           d3_event.preventDefault();
+           d3_event.stopImmediatePropagation();
+           g.wheel = setTimeout(wheelidled, _wheelDelay);
+           g.zoom(d3_event, 'mouse', constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));

 
 

-         return utilRebind(background, dispatch$1, 'on');
-       }
+           function wheelidled() {
+             g.wheel = null;
+             g.end(d3_event);
+           }
+         }

 
 

-       function rendererFeatures(context) {
-         var dispatch$1 = dispatch('change', 'redraw');
-         var features = utilRebind({}, dispatch$1, 'on');
+         var _downPointerIDs = new Set();

 
 

-         var _deferred = new Set();
+         var _pointerLocGetter;

 
 

-         var traffic_roads = {
-           'motorway': true,
-           'motorway_link': true,
-           'trunk': true,
-           'trunk_link': true,
-           'primary': true,
-           'primary_link': true,
-           'secondary': true,
-           'secondary_link': true,
-           'tertiary': true,
-           'tertiary_link': true,
-           'residential': true,
-           'unclassified': true,
-           'living_street': true
-         };
-         var service_roads = {
-           'service': true,
-           'road': true,
-           'track': true
-         };
-         var paths = {
-           'path': true,
-           'footway': true,
-           'cycleway': true,
-           'bridleway': true,
-           'steps': true,
-           'pedestrian': true
-         };
-         var past_futures = {
-           'proposed': true,
-           'construction': true,
-           'abandoned': true,
-           'dismantled': true,
-           'disused': true,
-           'razed': true,
-           'demolished': true,
-           'obliterated': true
-         };
-         var _cullFactor = 1;
-         var _cache = {};
-         var _rules = {};
-         var _stats = {};
-         var _keys = [];
-         var _hidden = [];
-         var _forceVisible = {};
+         function pointerdown(d3_event) {
+           _downPointerIDs.add(d3_event.pointerId);

 
 

-         function update() {
-           if (!window.mocha) {
-             var hash = utilStringQs(window.location.hash);
-             var disabled = features.disabled();
+           if (!filter.apply(this, arguments)) return;
+           var g = gesture(this, arguments, _downPointerIDs.size === 1);
+           var started;
+           d3_event.stopImmediatePropagation();
+           _pointerLocGetter = utilFastMouse(this);

 
 

-             if (disabled.length) {
-               hash.disable_features = disabled.join(',');
-             } else {
-               delete hash.disable_features;
-             }
+           var loc = _pointerLocGetter(d3_event);

 
 

-             window.location.replace('#' + utilQsString(hash, true));
-             corePreferences('disabled-features', disabled.join(','));
+           var p = [loc, _transform.invert(loc), d3_event.pointerId];
+
+           if (!g.pointer0) {
+             g.pointer0 = p;
+             started = true;
+           } else if (!g.pointer1 && g.pointer0[2] !== p[2]) {
+             g.pointer1 = p;

            }
 
            }
 

-           _hidden = features.hidden();
-           dispatch$1.call('change');
-           dispatch$1.call('redraw');
+           if (started) {
+             interrupt(this);
+             g.start(d3_event);
+           }

          }
 
          }
 

-         function defineRule(k, filter, max) {
-           var isEnabled = true;
+         function pointermove(d3_event) {
+           if (!_downPointerIDs.has(d3_event.pointerId)) return;
+           if (!_activeGesture || !_pointerLocGetter) return;
+           var g = gesture(this, arguments);
+           var isPointer0 = g.pointer0 && g.pointer0[2] === d3_event.pointerId;
+           var isPointer1 = !isPointer0 && g.pointer1 && g.pointer1[2] === d3_event.pointerId;

 
 

-           _keys.push(k);
+           if ((isPointer0 || isPointer1) && 'buttons' in d3_event && !d3_event.buttons) {
+             // The pointer went up without ending the gesture somehow, e.g.
+             // a down mouse was moved off the map and released. End it here.
+             if (g.pointer0) _downPointerIDs["delete"](g.pointer0[2]);
+             if (g.pointer1) _downPointerIDs["delete"](g.pointer1[2]);
+             g.end(d3_event);
+             return;
+           }

 
 

-           _rules[k] = {
-             filter: filter,
-             enabled: isEnabled,
-             // whether the user wants it enabled..
-             count: 0,
-             currentMax: max || Infinity,
-             defaultMax: max || Infinity,
-             enable: function enable() {
-               this.enabled = true;
-               this.currentMax = this.defaultMax;
-             },
-             disable: function disable() {
-               this.enabled = false;
-               this.currentMax = 0;
-             },
-             hidden: function hidden() {
-               return this.count === 0 && !this.enabled || this.count > this.currentMax * _cullFactor;
-             },
-             autoHidden: function autoHidden() {
-               return this.hidden() && this.currentMax > 0;
-             }
-           };
-         }
+           d3_event.preventDefault();
+           d3_event.stopImmediatePropagation();

 
 

-         defineRule('points', function isPoint(tags, geometry) {
-           return geometry === 'point';
-         }, 200);
-         defineRule('traffic_roads', function isTrafficRoad(tags) {
-           return traffic_roads[tags.highway];
-         });
-         defineRule('service_roads', function isServiceRoad(tags) {
-           return service_roads[tags.highway];
-         });
-         defineRule('paths', function isPath(tags) {
-           return paths[tags.highway];
-         });
-         defineRule('buildings', function isBuilding(tags) {
-           return !!tags.building && tags.building !== 'no' || tags.parking === 'multi-storey' || tags.parking === 'sheds' || tags.parking === 'carports' || tags.parking === 'garage_boxes';
-         }, 250);
-         defineRule('building_parts', function isBuildingPart(tags) {
-           return tags['building:part'];
-         });
-         defineRule('indoor', function isIndoor(tags) {
-           return tags.indoor;
-         });
-         defineRule('landuse', function isLanduse(tags, geometry) {
-           return geometry === 'area' && !_rules.buildings.filter(tags) && !_rules.building_parts.filter(tags) && !_rules.indoor.filter(tags) && !_rules.water.filter(tags) && !_rules.pistes.filter(tags);
-         });
-         defineRule('boundaries', function isBoundary(tags) {
-           return !!tags.boundary && !(traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway] || tags.waterway || tags.railway || tags.landuse || tags.natural || tags.building || tags.power);
-         });
-         defineRule('water', function isWater(tags) {
-           return !!tags.waterway || tags.natural === 'water' || tags.natural === 'coastline' || tags.natural === 'bay' || tags.landuse === 'pond' || tags.landuse === 'basin' || tags.landuse === 'reservoir' || tags.landuse === 'salt_pond';
-         });
-         defineRule('rail', function isRail(tags) {
-           return (!!tags.railway || tags.landuse === 'railway') && !(traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway]);
-         });
-         defineRule('pistes', function isPiste(tags) {
-           return tags['piste:type'];
-         });
-         defineRule('aerialways', function isPiste(tags) {
-           return tags.aerialway && tags.aerialway !== 'yes' && tags.aerialway !== 'station';
-         });
-         defineRule('power', function isPower(tags) {
-           return !!tags.power;
-         }); // contains a past/future tag, but not in active use as a road/path/cycleway/etc..
+           var loc = _pointerLocGetter(d3_event);

 
 

-         defineRule('past_future', function isPastFuture(tags) {
-           if (traffic_roads[tags.highway] || service_roads[tags.highway] || paths[tags.highway]) {
-             return false;
+           var t, p, l;
+           if (isPointer0) g.pointer0[0] = loc;else if (isPointer1) g.pointer1[0] = loc;
+           t = _transform;
+
+           if (g.pointer1) {
+             var p0 = g.pointer0[0],
+                 l0 = g.pointer0[1],
+                 p1 = g.pointer1[0],
+                 l1 = g.pointer1[1],
+                 dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
+                 dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
+             t = scale(t, Math.sqrt(dp / dl));
+             p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
+             l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
+           } else if (g.pointer0) {
+             p = g.pointer0[0];
+             l = g.pointer0[1];
+           } else {
+             return;

            }
 
            }
 

-           var strings = Object.keys(tags);
+           g.zoom(d3_event, 'touch', constrain(translate(t, p, l), g.extent, translateExtent));
+         }

 
 

-           for (var i = 0; i < strings.length; i++) {
-             var s = strings[i];
+         function pointerup(d3_event) {
+           if (!_downPointerIDs.has(d3_event.pointerId)) return;

 
 

-             if (past_futures[s] || past_futures[tags[s]]) {
-               return true;
-             }
-           }
+           _downPointerIDs["delete"](d3_event.pointerId);

 
 

-           return false;
-         }); // Lines or areas that don't match another feature filter.
-         // IMPORTANT: The 'others' feature must be the last one defined,
-         //   so that code in getMatches can skip this test if `hasMatch = true`
+           if (!_activeGesture) return;
+           var g = gesture(this, arguments);
+           d3_event.stopImmediatePropagation();
+           if (g.pointer0 && g.pointer0[2] === d3_event.pointerId) delete g.pointer0;else if (g.pointer1 && g.pointer1[2] === d3_event.pointerId) delete g.pointer1;
+
+           if (g.pointer1 && !g.pointer0) {
+             g.pointer0 = g.pointer1;
+             delete g.pointer1;
+           }

 
 

-         defineRule('others', function isOther(tags, geometry) {
-           return geometry === 'line' || geometry === 'area';
-         });
+           if (g.pointer0) {
+             g.pointer0[1] = _transform.invert(g.pointer0[0]);
+           } else {
+             g.end(d3_event);
+           }
+         }

 
 

-         features.features = function () {
-           return _rules;
+         zoom.wheelDelta = function (_) {
+           return arguments.length ? (wheelDelta = utilFunctor(+_), zoom) : wheelDelta;

          };
 
          };
 

-         features.keys = function () {
-           return _keys;
+         zoom.filter = function (_) {
+           return arguments.length ? (filter = utilFunctor(!!_), zoom) : filter;

          };
 
          };
 

-         features.enabled = function (k) {
-           if (!arguments.length) {
-             return _keys.filter(function (k) {
-               return _rules[k].enabled;
-             });
-           }
-
-           return _rules[k] && _rules[k].enabled;
+         zoom.extent = function (_) {
+           return arguments.length ? (extent = utilFunctor([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;

          };
 
          };
 

-         features.disabled = function (k) {
-           if (!arguments.length) {
-             return _keys.filter(function (k) {
-               return !_rules[k].enabled;
-             });
-           }
-
-           return _rules[k] && !_rules[k].enabled;
+         zoom.scaleExtent = function (_) {
+           return arguments.length ? (scaleExtent[0] = +_[0], scaleExtent[1] = +_[1], zoom) : [scaleExtent[0], scaleExtent[1]];

          };
 
          };
 

-         features.hidden = function (k) {
-           if (!arguments.length) {
-             return _keys.filter(function (k) {
-               return _rules[k].hidden();
-             });
-           }
+         zoom.translateExtent = function (_) {
+           return arguments.length ? (translateExtent[0][0] = +_[0][0], translateExtent[1][0] = +_[1][0], translateExtent[0][1] = +_[0][1], translateExtent[1][1] = +_[1][1], zoom) : [[translateExtent[0][0], translateExtent[0][1]], [translateExtent[1][0], translateExtent[1][1]]];
+         };

 
 

-           return _rules[k] && _rules[k].hidden();
+         zoom.constrain = function (_) {
+           return arguments.length ? (constrain = _, zoom) : constrain;

          };
 
          };
 

-         features.autoHidden = function (k) {
-           if (!arguments.length) {
-             return _keys.filter(function (k) {
-               return _rules[k].autoHidden();
-             });
-           }
+         zoom.interpolate = function (_) {
+           return arguments.length ? (interpolate = _, zoom) : interpolate;
+         };

 
 

-           return _rules[k] && _rules[k].autoHidden();
+         zoom._transform = function (_) {
+           return arguments.length ? (_transform = _, zoom) : _transform;

          };
 
          };
 

-         features.enable = function (k) {
-           if (_rules[k] && !_rules[k].enabled) {
-             _rules[k].enable();
+         return utilRebind(zoom, dispatch, 'on');
+       }

 
 

-             update();
-           }
-         };
+       // if pointer events are supported. Falls back to default `dblclick` event.

 
 

-         features.enableAll = function () {
-           var didEnable = false;
+       function utilDoubleUp() {
+         var dispatch = dispatch$8('doubleUp');
+         var _maxTimespan = 500; // milliseconds

 
 

-           for (var k in _rules) {
-             if (!_rules[k].enabled) {
-               didEnable = true;
+         var _maxDistance = 20; // web pixels; be somewhat generous to account for touch devices

 
 

-               _rules[k].enable();
-             }
-           }
+         var _pointer; // object representing the pointer that could trigger double up

 
 

-           if (didEnable) update();
-         };

 
 

-         features.disable = function (k) {
-           if (_rules[k] && _rules[k].enabled) {
-             _rules[k].disable();
+         function pointerIsValidFor(loc) {
+           // second pointerup must occur within a small timeframe after the first pointerdown
+           return new Date().getTime() - _pointer.startTime <= _maxTimespan && // all pointer events must occur within a small distance of the first pointerdown
+           geoVecLength(_pointer.startLoc, loc) <= _maxDistance;
+         }

 
 

-             update();
+         function pointerdown(d3_event) {
+           // ignore right-click
+           if (d3_event.ctrlKey || d3_event.button === 2) return;
+           var loc = [d3_event.clientX, d3_event.clientY]; // Don't rely on pointerId here since it can change between pointerdown
+           // events on touch devices
+
+           if (_pointer && !pointerIsValidFor(loc)) {
+             // if this pointer is no longer valid, clear it so another can be started
+             _pointer = undefined;

            }
            }

-         };

 
 

-         features.disableAll = function () {
-           var didDisable = false;
+           if (!_pointer) {
+             _pointer = {
+               startLoc: loc,
+               startTime: new Date().getTime(),
+               upCount: 0,
+               pointerId: d3_event.pointerId
+             };
+           } else {
+             // double down
+             _pointer.pointerId = d3_event.pointerId;
+           }
+         }

 
 

-           for (var k in _rules) {
-             if (_rules[k].enabled) {
-               didDisable = true;
+         function pointerup(d3_event) {
+           // ignore right-click
+           if (d3_event.ctrlKey || d3_event.button === 2) return;
+           if (!_pointer || _pointer.pointerId !== d3_event.pointerId) return;
+           _pointer.upCount += 1;

 
 

-               _rules[k].disable();
-             }
-           }
+           if (_pointer.upCount === 2) {
+             // double up!
+             var loc = [d3_event.clientX, d3_event.clientY];

 
 

-           if (didDisable) update();
-         };
+             if (pointerIsValidFor(loc)) {
+               var locInThis = utilFastMouse(this)(d3_event);
+               dispatch.call('doubleUp', this, d3_event, locInThis);
+             } // clear the pointer info in any case

 
 

-         features.toggle = function (k) {
-           if (_rules[k]) {
-             (function (f) {
-               return f.enabled ? f.disable() : f.enable();
-             })(_rules[k]);

 
 

-             update();
+             _pointer = undefined;

            }
            }

-         };
+         }

 
 

-         features.resetStats = function () {
-           for (var i = 0; i < _keys.length; i++) {
-             _rules[_keys[i]].count = 0;
+         function doubleUp(selection) {
+           if ('PointerEvent' in window) {
+             // dblclick isn't well supported on touch devices so manually use
+             // pointer events if they're available
+             selection.on('pointerdown.doubleUp', pointerdown).on('pointerup.doubleUp', pointerup);
+           } else {
+             // fallback to dblclick
+             selection.on('dblclick.doubleUp', function (d3_event) {
+               dispatch.call('doubleUp', this, d3_event, utilFastMouse(this)(d3_event));
+             });

            }
            }

+         }

 
 

-           dispatch$1.call('change');
+         doubleUp.off = function (selection) {
+           selection.on('pointerdown.doubleUp', null).on('pointerup.doubleUp', null).on('dblclick.doubleUp', null);

          };
 
          };
 

-         features.gatherStats = function (d, resolver, dimensions) {
-           var needsRedraw = false;
-           var types = utilArrayGroupBy(d, 'type');
-           var entities = [].concat(types.relation || [], types.way || [], types.node || []);
-           var currHidden, geometry, matches, i, j;
+         return utilRebind(doubleUp, dispatch, 'on');
+       }

 
 

-           for (i = 0; i < _keys.length; i++) {
-             _rules[_keys[i]].count = 0;
-           } // adjust the threshold for point/building culling based on viewport size..
-           // a _cullFactor of 1 corresponds to a 1000x1000px viewport..
+       var TILESIZE = 256;
+       var minZoom = 2;
+       var maxZoom = 24;
+       var kMin = geoZoomToScale(minZoom, TILESIZE);
+       var kMax = geoZoomToScale(maxZoom, TILESIZE);

 
 

+       function clamp$1(num, min, max) {
+         return Math.max(min, Math.min(num, max));
+       }

 
 

-           _cullFactor = dimensions[0] * dimensions[1] / 1000000;
+       function rendererMap(context) {
+         var dispatch = dispatch$8('move', 'drawn', 'crossEditableZoom', 'hitMinZoom', 'changeHighlighting', 'changeAreaFill');
+         var projection = context.projection;
+         var curtainProjection = context.curtainProjection;
+         var drawLayers;
+         var drawPoints;
+         var drawVertices;
+         var drawLines;
+         var drawAreas;
+         var drawMidpoints;
+         var drawLabels;

 
 

-           for (i = 0; i < entities.length; i++) {
-             geometry = entities[i].geometry(resolver);
-             matches = Object.keys(features.getMatches(entities[i], resolver, geometry));
+         var _selection = select(null);

 
 

-             for (j = 0; j < matches.length; j++) {
-               _rules[matches[j]].count++;
-             }
-           }
+         var supersurface = select(null);
+         var wrapper = select(null);
+         var surface = select(null);
+         var _dimensions = [1, 1];
+         var _dblClickZoomEnabled = true;
+         var _redrawEnabled = true;

 
 

-           currHidden = features.hidden();
+         var _gestureTransformStart;

 
 

-           if (currHidden !== _hidden) {
-             _hidden = currHidden;
-             needsRedraw = true;
-             dispatch$1.call('change');
-           }
+         var _transformStart = projection.transform();

 
 

-           return needsRedraw;
-         };
+         var _transformLast;

 
 

-         features.stats = function () {
-           for (var i = 0; i < _keys.length; i++) {
-             _stats[_keys[i]] = _rules[_keys[i]].count;
-           }
+         var _isTransformed = false;
+         var _minzoom = 0;

 
 

-           return _stats;
-         };
+         var _getMouseCoords;

 
 

-         features.clear = function (d) {
-           for (var i = 0; i < d.length; i++) {
-             features.clearEntity(d[i]);
-           }
-         };
+         var _lastPointerEvent;

 
 

-         features.clearEntity = function (entity) {
-           delete _cache[osmEntity.key(entity)];
-         };
+         var _lastWithinEditableZoom; // whether a pointerdown event started the zoom

 
 

-         features.reset = function () {
-           Array.from(_deferred).forEach(function (handle) {
-             window.cancelIdleCallback(handle);

 
 

-             _deferred["delete"](handle);
-           });
-           _cache = {};
-         }; // only certain relations are worth checking
+         var _pointerDown = false; // use pointer events on supported platforms; fallback to mouse events

 
 

+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // use pointer event interaction if supported; fallback to touch/mouse events in d3-zoom

 
 

-         function relationShouldBeChecked(relation) {
-           // multipolygon features have `area` geometry and aren't checked here
-           return relation.tags.type === 'boundary';
-         }

 
 

-         features.getMatches = function (entity, resolver, geometry) {
-           if (geometry === 'vertex' || geometry === 'relation' && !relationShouldBeChecked(entity)) return {};
-           var ent = osmEntity.key(entity);
+         var _zoomerPannerFunction = 'PointerEvent' in window ? utilZoomPan : d3_zoom;

 
 

-           if (!_cache[ent]) {
-             _cache[ent] = {};
-           }
+         var _zoomerPanner = _zoomerPannerFunction().scaleExtent([kMin, kMax]).interpolate(interpolate$1).filter(zoomEventFilter).on('zoom.map', zoomPan).on('start.map', function (d3_event) {
+           _pointerDown = d3_event && (d3_event.type === 'pointerdown' || d3_event.sourceEvent && d3_event.sourceEvent.type === 'pointerdown');
+         }).on('end.map', function () {
+           _pointerDown = false;
+         });

 
 

-           if (!_cache[ent].matches) {
-             var matches = {};
-             var hasMatch = false;
+         var _doubleUpHandler = utilDoubleUp();

 
 

-             for (var i = 0; i < _keys.length; i++) {
-               if (_keys[i] === 'others') {
-                 if (hasMatch) continue; // If an entity...
-                 //   1. is a way that hasn't matched other 'interesting' feature rules,
+         var scheduleRedraw = throttle(redraw, 750); // var isRedrawScheduled = false;
+         // var pendingRedrawCall;
+         // function scheduleRedraw() {
+         //     // Only schedule the redraw if one has not already been set.
+         //     if (isRedrawScheduled) return;
+         //     isRedrawScheduled = true;
+         //     var that = this;
+         //     var args = arguments;
+         //     pendingRedrawCall = window.requestIdleCallback(function () {
+         //         // Reset the boolean so future redraws can be set.
+         //         isRedrawScheduled = false;
+         //         redraw.apply(that, args);
+         //     }, { timeout: 1400 });
+         // }

 
 

-                 if (entity.type === 'way') {
-                   var parents = features.getParents(entity, resolver, geometry); //   2a. belongs only to a single multipolygon relation

 
 

-                   if (parents.length === 1 && parents[0].isMultipolygon() || // 2b. or belongs only to boundary relations
-                   parents.length > 0 && parents.every(function (parent) {
-                     return parent.tags.type === 'boundary';
-                   })) {
-                     // ...then match whatever feature rules the parent relation has matched.
-                     // see #2548, #2887
-                     //
-                     // IMPORTANT:
-                     // For this to work, getMatches must be called on relations before ways.
-                     //
-                     var pkey = osmEntity.key(parents[0]);
+         function cancelPendingRedraw() {
+           scheduleRedraw.cancel(); // isRedrawScheduled = false;
+           // window.cancelIdleCallback(pendingRedrawCall);
+         }

 
 

-                     if (_cache[pkey] && _cache[pkey].matches) {
-                       matches = Object.assign({}, _cache[pkey].matches); // shallow copy
+         function map(selection) {
+           _selection = selection;
+           context.on('change.map', immediateRedraw);
+           var osm = context.connection();

 
 

-                       continue;
-                     }
-                   }
-                 }
-               }
+           if (osm) {
+             osm.on('change.map', immediateRedraw);
+           }

 
 

-               if (_rules[_keys[i]].filter(entity.tags, geometry)) {
-                 matches[_keys[i]] = hasMatch = true;
-               }
-             }
+           function didUndoOrRedo(targetTransform) {
+             var mode = context.mode().id;
+             if (mode !== 'browse' && mode !== 'select') return;

 
 

-             _cache[ent].matches = matches;
+             if (targetTransform) {
+               map.transformEase(targetTransform);
+             }

            }
 
            }
 

-           return _cache[ent].matches;
-         };
-
-         features.getParents = function (entity, resolver, geometry) {
-           if (geometry === 'point') return [];
-           var ent = osmEntity.key(entity);
+           context.history().on('merge.map', function () {
+             scheduleRedraw();
+           }).on('change.map', immediateRedraw).on('undone.map', function (stack, fromStack) {
+             didUndoOrRedo(fromStack.transform);
+           }).on('redone.map', function (stack) {
+             didUndoOrRedo(stack.transform);
+           });
+           context.background().on('change.map', immediateRedraw);
+           context.features().on('redraw.map', immediateRedraw);
+           drawLayers.on('change.map', function () {
+             context.background().updateImagery();
+             immediateRedraw();
+           });
+           selection.on('wheel.map mousewheel.map', function (d3_event) {
+             // disable swipe-to-navigate browser pages on trackpad/magic mouse – #5552
+             d3_event.preventDefault();
+           }).call(_zoomerPanner).call(_zoomerPanner.transform, projection.transform()).on('dblclick.zoom', null); // override d3-zoom dblclick handling

 
 

-           if (!_cache[ent]) {
-             _cache[ent] = {};
-           }
+           map.supersurface = supersurface = selection.append('div').attr('class', 'supersurface').call(utilSetTransform, 0, 0); // Need a wrapper div because Opera can't cope with an absolutely positioned
+           // SVG element: http://bl.ocks.org/jfirebaugh/6fbfbd922552bf776c16

 
 

-           if (!_cache[ent].parents) {
-             var parents = [];
+           wrapper = supersurface.append('div').attr('class', 'layer layer-data');
+           map.surface = surface = wrapper.call(drawLayers).selectAll('.surface');
+           surface.call(drawLabels.observe).call(_doubleUpHandler).on(_pointerPrefix + 'down.zoom', function (d3_event) {
+             _lastPointerEvent = d3_event;

 
 

-             if (geometry === 'vertex') {
-               parents = resolver.parentWays(entity);
-             } else {
-               // 'line', 'area', 'relation'
-               parents = resolver.parentRelations(entity);
+             if (d3_event.button === 2) {
+               d3_event.stopPropagation();

              }
              }

+           }, true).on(_pointerPrefix + 'up.zoom', function (d3_event) {
+             _lastPointerEvent = d3_event;

 
 

-             _cache[ent].parents = parents;
-           }
-
-           return _cache[ent].parents;
-         };
+             if (resetTransform()) {
+               immediateRedraw();
+             }
+           }).on(_pointerPrefix + 'move.map', function (d3_event) {
+             _lastPointerEvent = d3_event;
+           }).on(_pointerPrefix + 'over.vertices', function (d3_event) {
+             if (map.editableDataEnabled() && !_isTransformed) {
+               var hover = d3_event.target.__data__;
+               surface.call(drawVertices.drawHover, context.graph(), hover, map.extent());
+               dispatch.call('drawn', this, {
+                 full: false
+               });
+             }
+           }).on(_pointerPrefix + 'out.vertices', function (d3_event) {
+             if (map.editableDataEnabled() && !_isTransformed) {
+               var hover = d3_event.relatedTarget && d3_event.relatedTarget.__data__;
+               surface.call(drawVertices.drawHover, context.graph(), hover, map.extent());
+               dispatch.call('drawn', this, {
+                 full: false
+               });
+             }
+           });
+           var detected = utilDetect(); // only WebKit supports gesture events

 
 

-         features.isHiddenPreset = function (preset, geometry) {
-           if (!_hidden.length) return false;
-           if (!preset.tags) return false;
-           var test = preset.setTags({}, geometry);
+           if ('GestureEvent' in window && // Listening for gesture events on iOS 13.4+ breaks double-tapping,
+           // but we only need to do this on desktop Safari anyway. – #7694
+           !detected.isMobileWebKit) {
+             // Desktop Safari sends gesture events for multitouch trackpad pinches.
+             // We can listen for these and translate them into map zooms.
+             surface.on('gesturestart.surface', function (d3_event) {
+               d3_event.preventDefault();
+               _gestureTransformStart = projection.transform();
+             }).on('gesturechange.surface', gestureChange);
+           } // must call after surface init

 
 

-           for (var key in _rules) {
-             if (_rules[key].filter(test, geometry)) {
-               if (_hidden.indexOf(key) !== -1) {
-                 return key;
-               }

 
 

-               return false;
-             }
-           }
+           updateAreaFill();

 
 

-           return false;
-         };
+           _doubleUpHandler.on('doubleUp.map', function (d3_event, p0) {
+             if (!_dblClickZoomEnabled) return; // don't zoom if targeting something other than the map itself

 
 

-         features.isHiddenFeature = function (entity, resolver, geometry) {
-           if (!_hidden.length) return false;
-           if (!entity.version) return false;
-           if (_forceVisible[entity.id]) return false;
-           var matches = Object.keys(features.getMatches(entity, resolver, geometry));
-           return matches.length && matches.every(function (k) {
-             return features.hidden(k);
+             if (_typeof(d3_event.target.__data__) === 'object' && // or area fills
+             !select(d3_event.target).classed('fill')) return;
+             var zoomOut = d3_event.shiftKey;
+             var t = projection.transform();
+             var p1 = t.invert(p0);
+             t = t.scale(zoomOut ? 0.5 : 2);
+             t.x = p0[0] - p1[0] * t.k;
+             t.y = p0[1] - p1[1] * t.k;
+             map.transformEase(t);

            });
            });

-         };

 
 

-         features.isHiddenChild = function (entity, resolver, geometry) {
-           if (!_hidden.length) return false;
-           if (!entity.version || geometry === 'point') return false;
-           if (_forceVisible[entity.id]) return false;
-           var parents = features.getParents(entity, resolver, geometry);
-           if (!parents.length) return false;
+           context.on('enter.map', function () {
+             if (!map.editableDataEnabled(true
+             /* skip zoom check */
+             )) return;
+             if (_isTransformed) return; // redraw immediately any objects affected by a change in selectedIDs.

 
 

-           for (var i = 0; i < parents.length; i++) {
-             if (!features.isHidden(parents[i], resolver, parents[i].geometry(resolver))) {
-               return false;
-             }
-           }
+             var graph = context.graph();
+             var selectedAndParents = {};
+             context.selectedIDs().forEach(function (id) {
+               var entity = graph.hasEntity(id);

 
 

-           return true;
-         };
+               if (entity) {
+                 selectedAndParents[entity.id] = entity;

 
 

-         features.hasHiddenConnections = function (entity, resolver) {
-           if (!_hidden.length) return false;
-           var childNodes, connections;
+                 if (entity.type === 'node') {
+                   graph.parentWays(entity).forEach(function (parent) {
+                     selectedAndParents[parent.id] = parent;
+                   });
+                 }
+               }
+             });
+             var data = Object.values(selectedAndParents);

 
 

-           if (entity.type === 'midpoint') {
-             childNodes = [resolver.entity(entity.edge[0]), resolver.entity(entity.edge[1])];
-             connections = [];
-           } else {
-             childNodes = entity.nodes ? resolver.childNodes(entity) : [];
-             connections = features.getParents(entity, resolver, entity.geometry(resolver));
-           } // gather ways connected to child nodes..
+             var filter = function filter(d) {
+               return d.id in selectedAndParents;
+             };

 
 

+             data = context.features().filter(data, graph);
+             surface.call(drawVertices.drawSelected, graph, map.extent()).call(drawLines, graph, data, filter).call(drawAreas, graph, data, filter).call(drawMidpoints, graph, data, filter, map.trimmedExtent());
+             dispatch.call('drawn', this, {
+               full: false
+             }); // redraw everything else later

 
 

-           connections = childNodes.reduce(function (result, e) {
-             return resolver.isShared(e) ? utilArrayUnion(result, resolver.parentWays(e)) : result;
-           }, connections);
-           return connections.some(function (e) {
-             return features.isHidden(e, resolver, e.geometry(resolver));
+             scheduleRedraw();

            });
            });

-         };
-
-         features.isHidden = function (entity, resolver, geometry) {
-           if (!_hidden.length) return false;
-           if (!entity.version) return false;
-           var fn = geometry === 'vertex' ? features.isHiddenChild : features.isHiddenFeature;
-           return fn(entity, resolver, geometry);
-         };
+           map.dimensions(utilGetDimensions(selection));
+         }

 
 

-         features.filter = function (d, resolver) {
-           if (!_hidden.length) return d;
-           var result = [];
+         function zoomEventFilter(d3_event) {
+           // Fix for #2151, (see also d3/d3-zoom#60, d3/d3-brush#18)
+           // Intercept `mousedown` and check if there is an orphaned zoom gesture.
+           // This can happen if a previous `mousedown` occurred without a `mouseup`.
+           // If we detect this, dispatch `mouseup` to complete the orphaned gesture,
+           // so that d3-zoom won't stop propagation of new `mousedown` events.
+           if (d3_event.type === 'mousedown') {
+             var hasOrphan = false;
+             var listeners = window.__on;

 
 

-           for (var i = 0; i < d.length; i++) {
-             var entity = d[i];
+             for (var i = 0; i < listeners.length; i++) {
+               var listener = listeners[i];

 
 

-             if (!features.isHidden(entity, resolver, entity.geometry(resolver))) {
-               result.push(entity);
+               if (listener.name === 'zoom' && listener.type === 'mouseup') {
+                 hasOrphan = true;
+                 break;
+               }

              }
              }

-           }

 
 

-           return result;
-         };
+             if (hasOrphan) {
+               var event = window.CustomEvent;

 
 

-         features.forceVisible = function (entityIDs) {
-           if (!arguments.length) return Object.keys(_forceVisible);
-           _forceVisible = {};
+               if (event) {
+                 event = new event('mouseup');
+               } else {
+                 event = window.document.createEvent('Event');
+                 event.initEvent('mouseup', false, false);
+               } // Event needs to be dispatched with an event.view property.

 
 

-           for (var i = 0; i < entityIDs.length; i++) {
-             _forceVisible[entityIDs[i]] = true;
-             var entity = context.hasEntity(entityIDs[i]);

 
 

-             if (entity && entity.type === 'relation') {
-               // also show relation members (one level deep)
-               for (var j in entity.members) {
-                 _forceVisible[entity.members[j].id] = true;
-               }
+               event.view = window;
+               window.dispatchEvent(event);

              }
            }
 
              }
            }
 

-           return features;
-         };
+           return d3_event.button !== 2; // ignore right clicks
+         }

 
 

-         features.init = function () {
-           var storage = corePreferences('disabled-features');
+         function pxCenter() {
+           return [_dimensions[0] / 2, _dimensions[1] / 2];
+         }

 
 

-           if (storage) {
-             var storageDisabled = storage.replace(/;/g, ',').split(',');
-             storageDisabled.forEach(features.disable);
-           }
+         function drawEditable(difference, extent) {
+           var mode = context.mode();
+           var graph = context.graph();
+           var features = context.features();
+           var all = context.history().intersects(map.extent());
+           var fullRedraw = false;
+           var data;
+           var set;
+           var filter;
+           var applyFeatureLayerFilters = true;

 
 

-           var hash = utilStringQs(window.location.hash);
+           if (map.isInWideSelection()) {
+             data = [];
+             utilEntityAndDeepMemberIDs(mode.selectedIDs(), context.graph()).forEach(function (id) {
+               var entity = context.hasEntity(id);
+               if (entity) data.push(entity);
+             });
+             fullRedraw = true;
+             filter = utilFunctor(true); // selected features should always be visible, so we can skip filtering

 
 

-           if (hash.disable_features) {
-             var hashDisabled = hash.disable_features.replace(/;/g, ',').split(',');
-             hashDisabled.forEach(features.disable);
-           }
-         }; // warm up the feature matching cache upon merging fetched data
+             applyFeatureLayerFilters = false;
+           } else if (difference) {
+             var complete = difference.complete(map.extent());
+             data = Object.values(complete).filter(Boolean);
+             set = new Set(Object.keys(complete));

 
 

+             filter = function filter(d) {
+               return set.has(d.id);
+             };

 
 

-         context.history().on('merge.features', function (newEntities) {
-           if (!newEntities) return;
-           var handle = window.requestIdleCallback(function () {
-             var graph = context.graph();
-             var types = utilArrayGroupBy(newEntities, 'type'); // ensure that getMatches is called on relations before ways
+             features.clear(data);
+           } else {
+             // force a full redraw if gatherStats detects that a feature
+             // should be auto-hidden (e.g. points or buildings)..
+             if (features.gatherStats(all, graph, _dimensions)) {
+               extent = undefined;
+             }

 
 

-             var entities = [].concat(types.relation || [], types.way || [], types.node || []);
+             if (extent) {
+               data = context.history().intersects(map.extent().intersection(extent));
+               set = new Set(data.map(function (entity) {
+                 return entity.id;
+               }));

 
 

-             for (var i = 0; i < entities.length; i++) {
-               var geometry = entities[i].geometry(graph);
-               features.getMatches(entities[i], graph, geometry);
+               filter = function filter(d) {
+                 return set.has(d.id);
+               };
+             } else {
+               data = all;
+               fullRedraw = true;
+               filter = utilFunctor(true);

              }
              }

-           });
-
-           _deferred.add(handle);
-         });
-         return features;
-       }
+           }

 
 

-       //
-       // - the activeID - nope
-       // - 1 away (adjacent) to the activeID - yes (vertices will be merged)
-       // - 2 away from the activeID - nope (would create a self intersecting segment)
-       // - all others on a linear way - yes
-       // - all others on a closed way - nope (would create a self intersecting polygon)
-       //
-       // returns
-       // 0 = active vertex - no touch/connect
-       // 1 = passive vertex - yes touch/connect
-       // 2 = adjacent vertex - yes but pay attention segmenting a line here
-       //
+           if (applyFeatureLayerFilters) {
+             data = features.filter(data, graph);
+           } else {
+             context.features().resetStats();
+           }

 
 

-       function svgPassiveVertex(node, graph, activeID) {
-         if (!activeID) return 1;
-         if (activeID === node.id) return 0;
-         var parents = graph.parentWays(node);
-         var i, j, nodes, isClosed, ix1, ix2, ix3, ix4, max;
+           if (mode && mode.id === 'select') {
+             // update selected vertices - the user might have just double-clicked a way,
+             // creating a new vertex, triggering a partial redraw without a mode change
+             surface.call(drawVertices.drawSelected, graph, map.extent());
+           }

 
 

-         for (i = 0; i < parents.length; i++) {
-           nodes = parents[i].nodes;
-           isClosed = parents[i].isClosed();
+           surface.call(drawVertices, graph, data, filter, map.extent(), fullRedraw).call(drawLines, graph, data, filter).call(drawAreas, graph, data, filter).call(drawMidpoints, graph, data, filter, map.trimmedExtent()).call(drawLabels, graph, data, filter, _dimensions, fullRedraw).call(drawPoints, graph, data, filter);
+           dispatch.call('drawn', this, {
+             full: true
+           });
+         }

 
 

-           for (j = 0; j < nodes.length; j++) {
-             // find this vertex, look nearby
-             if (nodes[j] === node.id) {
-               ix1 = j - 2;
-               ix2 = j - 1;
-               ix3 = j + 1;
-               ix4 = j + 2;
+         map.init = function () {
+           drawLayers = svgLayers(projection, context);
+           drawPoints = svgPoints(projection, context);
+           drawVertices = svgVertices(projection, context);
+           drawLines = svgLines(projection, context);
+           drawAreas = svgAreas(projection, context);
+           drawMidpoints = svgMidpoints(projection, context);
+           drawLabels = svgLabels(projection, context);
+         };

 
 

-               if (isClosed) {
-                 // wraparound if needed
-                 max = nodes.length - 1;
-                 if (ix1 < 0) ix1 = max + ix1;
-                 if (ix2 < 0) ix2 = max + ix2;
-                 if (ix3 > max) ix3 = ix3 - max;
-                 if (ix4 > max) ix4 = ix4 - max;
-               }
+         function editOff() {
+           context.features().resetStats();
+           surface.selectAll('.layer-osm *').remove();
+           surface.selectAll('.layer-touch:not(.markers) *').remove();
+           var allowed = {
+             'browse': true,
+             'save': true,
+             'select-note': true,
+             'select-data': true,
+             'select-error': true
+           };
+           var mode = context.mode();

 
 

-               if (nodes[ix1] === activeID) return 0; // no - prevent self intersect
-               else if (nodes[ix2] === activeID) return 2; // ok - adjacent
-                 else if (nodes[ix3] === activeID) return 2; // ok - adjacent
-                   else if (nodes[ix4] === activeID) return 0; // no - prevent self intersect
-                     else if (isClosed && nodes.indexOf(activeID) !== -1) return 0; // no - prevent self intersect
-             }
+           if (mode && !allowed[mode.id]) {
+             context.enter(modeBrowse(context));

            }
            }

-         }

 
 

-         return 1; // ok
-       }
-       function svgMarkerSegments(projection, graph, dt, shouldReverse, bothDirections) {
-         return function (entity) {
-           var i = 0;
-           var offset = dt;
-           var segments = [];
-           var clip = d3_geoIdentity().clipExtent(projection.clipExtent()).stream;
-           var coordinates = graph.childNodes(entity).map(function (n) {
-             return n.loc;
+           dispatch.call('drawn', this, {
+             full: true

            });
            });

-           var a, b;
-
-           if (shouldReverse(entity)) {
-             coordinates.reverse();
-           }
+         }

 
 

-           d3_geoStream({
-             type: 'LineString',
-             coordinates: coordinates
-           }, projection.stream(clip({
-             lineStart: function lineStart() {},
-             lineEnd: function lineEnd() {
-               a = null;
-             },
-             point: function point(x, y) {
-               b = [x, y];
+         function gestureChange(d3_event) {
+           // Remap Safari gesture events to wheel events - #5492
+           // We want these disabled most places, but enabled for zoom/unzoom on map surface
+           // https://developer.mozilla.org/en-US/docs/Web/API/GestureEvent
+           var e = d3_event;
+           e.preventDefault();
+           var props = {
+             deltaMode: 0,
+             // dummy values to ignore in zoomPan
+             deltaY: 1,
+             // dummy values to ignore in zoomPan
+             clientX: e.clientX,
+             clientY: e.clientY,
+             screenX: e.screenX,
+             screenY: e.screenY,
+             x: e.x,
+             y: e.y
+           };
+           var e2 = new WheelEvent('wheel', props);
+           e2._scale = e.scale; // preserve the original scale

 
 

-               if (a) {
-                 var span = geoVecLength(a, b) - offset;
+           e2._rotation = e.rotation; // preserve the original rotation

 
 

-                 if (span >= 0) {
-                   var heading = geoVecAngle(a, b);
-                   var dx = dt * Math.cos(heading);
-                   var dy = dt * Math.sin(heading);
-                   var p = [a[0] + offset * Math.cos(heading), a[1] + offset * Math.sin(heading)]; // gather coordinates
+           _selection.node().dispatchEvent(e2);
+         }

 
 

-                   var coord = [a, p];
+         function zoomPan(event, key, transform) {
+           var source = event && event.sourceEvent || event;
+           var eventTransform = transform || event && event.transform;
+           var x = eventTransform.x;
+           var y = eventTransform.y;
+           var k = eventTransform.k; // Special handling of 'wheel' events:
+           // They might be triggered by the user scrolling the mouse wheel,
+           // or 2-finger pinch/zoom gestures, the transform may need adjustment.

 
 

-                   for (span -= dt; span >= 0; span -= dt) {
-                     p = geoVecAdd(p, [dx, dy]);
-                     coord.push(p);
-                   }
+           if (source && source.type === 'wheel') {
+             // assume that the gesture is already handled by pointer events
+             if (_pointerDown) return;
+             var detected = utilDetect();
+             var dX = source.deltaX;
+             var dY = source.deltaY;
+             var x2 = x;
+             var y2 = y;
+             var k2 = k;
+             var t0, p0, p1; // Normalize mousewheel scroll speed (Firefox) - #3029
+             // If wheel delta is provided in LINE units, recalculate it in PIXEL units
+             // We are essentially redoing the calculations that occur here:
+             //   https://github.com/d3/d3-zoom/blob/78563a8348aa4133b07cac92e2595c2227ca7cd7/src/zoom.js#L203
+             // See this for more info:
+             //   https://github.com/basilfx/normalize-wheel/blob/master/src/normalizeWheel.js

 
 

-                   coord.push(b); // generate svg paths
+             if (source.deltaMode === 1
+             /* LINE */
+             ) {
+                 // Convert from lines to pixels, more if the user is scrolling fast.
+                 // (I made up the exp function to roughly match Firefox to what Chrome does)
+                 // These numbers should be floats, because integers are treated as pan gesture below.
+                 var lines = Math.abs(source.deltaY);
+                 var sign = source.deltaY > 0 ? 1 : -1;
+                 dY = sign * clamp$1(Math.exp((lines - 1) * 0.75) * 4.000244140625, 4.000244140625, // min
+                 350.000244140625 // max
+                 ); // On Firefox Windows and Linux we always get +/- the scroll line amount (default 3)
+                 // There doesn't seem to be any scroll acceleration.
+                 // This multiplier increases the speed a little bit - #5512

 
 

-                   var segment = '';
-                   var j;
+                 if (detected.os !== 'mac') {
+                   dY *= 5;
+                 } // recalculate x2,y2,k2

 
 

-                   for (j = 0; j < coord.length; j++) {
-                     segment += (j === 0 ? 'M' : 'L') + coord[j][0] + ',' + coord[j][1];
-                   }

 
 

-                   segments.push({
-                     id: entity.id,
-                     index: i++,
-                     d: segment
-                   });
+                 t0 = _isTransformed ? _transformLast : _transformStart;
+                 p0 = _getMouseCoords(source);
+                 p1 = t0.invert(p0);
+                 k2 = t0.k * Math.pow(2, -dY / 500);
+                 k2 = clamp$1(k2, kMin, kMax);
+                 x2 = p0[0] - p1[0] * k2;
+                 y2 = p0[1] - p1[1] * k2; // 2 finger map pinch zooming (Safari) - #5492
+                 // These are fake `wheel` events we made from Safari `gesturechange` events..
+               } else if (source._scale) {
+               // recalculate x2,y2,k2
+               t0 = _gestureTransformStart;
+               p0 = _getMouseCoords(source);
+               p1 = t0.invert(p0);
+               k2 = t0.k * source._scale;
+               k2 = clamp$1(k2, kMin, kMax);
+               x2 = p0[0] - p1[0] * k2;
+               y2 = p0[1] - p1[1] * k2; // 2 finger map pinch zooming (all browsers except Safari) - #5492
+               // Pinch zooming via the `wheel` event will always have:
+               // - `ctrlKey = true`
+               // - `deltaY` is not round integer pixels (ignore `deltaX`)
+             } else if (source.ctrlKey && !isInteger(dY)) {
+               dY *= 6; // slightly scale up whatever the browser gave us
+               // recalculate x2,y2,k2

 
 

-                   if (bothDirections(entity)) {
-                     segment = '';
+               t0 = _isTransformed ? _transformLast : _transformStart;
+               p0 = _getMouseCoords(source);
+               p1 = t0.invert(p0);
+               k2 = t0.k * Math.pow(2, -dY / 500);
+               k2 = clamp$1(k2, kMin, kMax);
+               x2 = p0[0] - p1[0] * k2;
+               y2 = p0[1] - p1[1] * k2; // Trackpad scroll zooming with shift or alt/option key down
+             } else if ((source.altKey || source.shiftKey) && isInteger(dY)) {
+               // recalculate x2,y2,k2
+               t0 = _isTransformed ? _transformLast : _transformStart;
+               p0 = _getMouseCoords(source);
+               p1 = t0.invert(p0);
+               k2 = t0.k * Math.pow(2, -dY / 500);
+               k2 = clamp$1(k2, kMin, kMax);
+               x2 = p0[0] - p1[0] * k2;
+               y2 = p0[1] - p1[1] * k2; // 2 finger map panning (Mac only, all browsers except Firefox #8595) - #5492, #5512
+               // Panning via the `wheel` event will always have:
+               // - `ctrlKey = false`
+               // - `deltaX`,`deltaY` are round integer pixels
+             } else if (detected.os === 'mac' && detected.browser !== 'Firefox' && !source.ctrlKey && isInteger(dX) && isInteger(dY)) {
+               p1 = projection.translate();
+               x2 = p1[0] - dX;
+               y2 = p1[1] - dY;
+               k2 = projection.scale();
+               k2 = clamp$1(k2, kMin, kMax);
+             } // something changed - replace the event transform

 
 

-                     for (j = coord.length - 1; j >= 0; j--) {
-                       segment += (j === coord.length - 1 ? 'M' : 'L') + coord[j][0] + ',' + coord[j][1];
-                     }

 
 

-                     segments.push({
-                       id: entity.id,
-                       index: i++,
-                       d: segment
-                     });
-                   }
-                 }
+             if (x2 !== x || y2 !== y || k2 !== k) {
+               x = x2;
+               y = y2;
+               k = k2;
+               eventTransform = identity$2.translate(x2, y2).scale(k2);

 
 

-                 offset = -span;
+               if (_zoomerPanner._transform) {
+                 // utilZoomPan interface
+                 _zoomerPanner._transform(eventTransform);
+               } else {
+                 // d3_zoom interface
+                 _selection.node().__zoom = eventTransform;

                }
                }

-
-               a = b;

              }
              }

-           })));
-           return segments;
-         };
-       }
-       function svgPath(projection, graph, isArea) {
-         // Explanation of magic numbers:
-         // "padding" here allows space for strokes to extend beyond the viewport,
-         // so that the stroke isn't drawn along the edge of the viewport when
-         // the shape is clipped.
-         //
-         // When drawing lines, pad viewport by 5px.
-         // When drawing areas, pad viewport by 65px in each direction to allow
-         // for 60px area fill stroke (see ".fill-partial path.fill" css rule)
-         var cache = {};
-         var padding = isArea ? 65 : 5;
-         var viewport = projection.clipExtent();
-         var paddedExtent = [[viewport[0][0] - padding, viewport[0][1] - padding], [viewport[1][0] + padding, viewport[1][1] + padding]];
-         var clip = d3_geoIdentity().clipExtent(paddedExtent).stream;
-         var project = projection.stream;
-         var path = d3_geoPath().projection({
-           stream: function stream(output) {
-             return project(clip(output));

            }
            }

-         });

 
 

-         var svgpath = function svgpath(entity) {
-           if (entity.id in cache) {
-             return cache[entity.id];
-           } else {
-             return cache[entity.id] = path(entity.asGeoJSON(graph));
+           if (_transformStart.x === x && _transformStart.y === y && _transformStart.k === k) {
+             return; // no change

            }
            }

-         };

 
 

-         svgpath.geojson = function (d) {
-           if (d.__featurehash__ !== undefined) {
-             if (d.__featurehash__ in cache) {
-               return cache[d.__featurehash__];
-             } else {
-               return cache[d.__featurehash__] = path(d);
+           if (geoScaleToZoom(k, TILESIZE) < _minzoom) {
+             surface.interrupt();
+             dispatch.call('hitMinZoom', this, map);
+             setCenterZoom(map.center(), context.minEditableZoom(), 0, true);
+             scheduleRedraw();
+             dispatch.call('move', this, map);
+             return;
+           }
+
+           projection.transform(eventTransform);
+           var withinEditableZoom = map.withinEditableZoom();
+
+           if (_lastWithinEditableZoom !== withinEditableZoom) {
+             if (_lastWithinEditableZoom !== undefined) {
+               // notify that the map zoomed in or out over the editable zoom threshold
+               dispatch.call('crossEditableZoom', this, withinEditableZoom);

              }
              }

-           } else {
-             return path(d);
+
+             _lastWithinEditableZoom = withinEditableZoom;

            }
            }

-         };

 
 

-         return svgpath;
-       }
-       function svgPointTransform(projection) {
-         var svgpoint = function svgpoint(entity) {
-           // http://jsperf.com/short-array-join
-           var pt = projection(entity.loc);
-           return 'translate(' + pt[0] + ',' + pt[1] + ')';
-         };
+           var scale = k / _transformStart.k;
+           var tX = (x / scale - _transformStart.x) * scale;
+           var tY = (y / scale - _transformStart.y) * scale;

 
 

-         svgpoint.geojson = function (d) {
-           return svgpoint(d.properties.entity);
-         };
+           if (context.inIntro()) {
+             curtainProjection.transform({
+               x: x - tX,
+               y: y - tY,
+               k: k
+             });
+           }

 
 

-         return svgpoint;
-       }
-       function svgRelationMemberTags(graph) {
-         return function (entity) {
-           var tags = entity.tags;
-           var shouldCopyMultipolygonTags = !entity.hasInterestingTags();
-           graph.parentRelations(entity).forEach(function (relation) {
-             var type = relation.tags.type;
+           if (source) {
+             _lastPointerEvent = event;
+           }

 
 

-             if (type === 'multipolygon' && shouldCopyMultipolygonTags || type === 'boundary') {
-               tags = Object.assign({}, relation.tags, tags);
-             }
-           });
-           return tags;
-         };
-       }
-       function svgSegmentWay(way, graph, activeID) {
-         // When there is no activeID, we can memoize this expensive computation
-         if (activeID === undefined) {
-           return graph["transient"](way, 'waySegments', getWaySegments);
-         } else {
-           return getWaySegments();
+           _isTransformed = true;
+           _transformLast = eventTransform;
+           utilSetTransform(supersurface, tX, tY, scale);
+           scheduleRedraw();
+           dispatch.call('move', this, map);
+
+           function isInteger(val) {
+             return typeof val === 'number' && isFinite(val) && Math.floor(val) === val;
+           }

          }
 
          }
 

-         function getWaySegments() {
-           var isActiveWay = way.nodes.indexOf(activeID) !== -1;
-           var features = {
-             passive: [],
-             active: []
-           };
-           var start = {};
-           var end = {};
-           var node, type;
+         function resetTransform() {
+           if (!_isTransformed) return false;
+           utilSetTransform(supersurface, 0, 0);
+           _isTransformed = false;
+
+           if (context.inIntro()) {
+             curtainProjection.transform(projection.transform());
+           }
+
+           return true;
+         }
+
+         function redraw(difference, extent) {
+           if (surface.empty() || !_redrawEnabled) return; // If we are in the middle of a zoom/pan, we can't do differenced redraws.
+           // It would result in artifacts where differenced entities are redrawn with
+           // one transform and unchanged entities with another.
+
+           if (resetTransform()) {
+             difference = extent = undefined;
+           }
+
+           var zoom = map.zoom();
+           var z = String(~~zoom);
+
+           if (surface.attr('data-zoom') !== z) {
+             surface.attr('data-zoom', z);
+           } // class surface as `lowzoom` around z17-z18.5 (based on latitude)

 
 

-           for (var i = 0; i < way.nodes.length; i++) {
-             node = graph.entity(way.nodes[i]);
-             type = svgPassiveVertex(node, graph, activeID);
-             end = {
-               node: node,
-               type: type
-             };

 
 

-             if (start.type !== undefined) {
-               if (start.node.id === activeID || end.node.id === activeID) ; else if (isActiveWay && (start.type === 2 || end.type === 2)) {
-                 // one adjacent vertex
-                 pushActive(start, end, i);
-               } else if (start.type === 0 && end.type === 0) {
-                 // both active vertices
-                 pushActive(start, end, i);
-               } else {
-                 pushPassive(start, end, i);
-               }
-             }
+           var lat = map.center()[1];
+           var lowzoom = linear().domain([-60, 0, 60]).range([17, 18.5, 17]).clamp(true);
+           surface.classed('low-zoom', zoom <= lowzoom(lat));

 
 

-             start = end;
-           }
+           if (!difference) {
+             supersurface.call(context.background());
+             wrapper.call(drawLayers);
+           } // OSM

 
 

-           return features;

 
 

-           function pushActive(start, end, index) {
-             features.active.push({
-               type: 'Feature',
-               id: way.id + '-' + index + '-nope',
-               properties: {
-                 nope: true,
-                 target: true,
-                 entity: way,
-                 nodes: [start.node, end.node],
-                 index: index
-               },
-               geometry: {
-                 type: 'LineString',
-                 coordinates: [start.node.loc, end.node.loc]
-               }
-             });
+           if (map.editableDataEnabled() || map.isInWideSelection()) {
+             context.loadTiles(projection);
+             drawEditable(difference, extent);
+           } else {
+             editOff();

            }
 
            }
 

-           function pushPassive(start, end, index) {
-             features.passive.push({
-               type: 'Feature',
-               id: way.id + '-' + index,
-               properties: {
-                 target: true,
-                 entity: way,
-                 nodes: [start.node, end.node],
-                 index: index
-               },
-               geometry: {
-                 type: 'LineString',
-                 coordinates: [start.node.loc, end.node.loc]
-               }
-             });
-           }
+           _transformStart = projection.transform();
+           return map;

          }
          }

-       }
-
-       function svgTagClasses() {
-         var primaries = ['building', 'highway', 'railway', 'waterway', 'aeroway', 'aerialway', 'piste:type', 'boundary', 'power', 'amenity', 'natural', 'landuse', 'leisure', 'military', 'place', 'man_made', 'route', 'attraction', 'building:part', 'indoor'];
-         var statuses = [// nonexistent, might be built
-         'proposed', 'planned', // under maintentance or between groundbreaking and opening
-         'construction', // existent but not functional
-         'disused', // dilapidated to nonexistent
-         'abandoned', // nonexistent, still may appear in imagery
-         'dismantled', 'razed', 'demolished', 'obliterated', // existent occasionally, e.g. stormwater drainage basin
-         'intermittent'];
-         var secondaries = ['oneway', 'bridge', 'tunnel', 'embankment', 'cutting', 'barrier', 'surface', 'tracktype', 'footway', 'crossing', 'service', 'sport', 'public_transport', 'location', 'parking', 'golf', 'type', 'leisure', 'man_made', 'indoor'];

 
 

-         var _tags = function _tags(entity) {
-           return entity.tags;
+         var immediateRedraw = function immediateRedraw(difference, extent) {
+           if (!difference && !extent) cancelPendingRedraw();
+           redraw(difference, extent);

          };
 
          };
 

-         var tagClasses = function tagClasses(selection) {
-           selection.each(function tagClassesEach(entity) {
-             var value = this.className;
-
-             if (value.baseVal !== undefined) {
-               value = value.baseVal;
-             }
+         map.lastPointerEvent = function () {
+           return _lastPointerEvent;
+         };

 
 

-             var t = _tags(entity);
+         map.mouse = function (d3_event) {
+           var event = d3_event || _lastPointerEvent;

 
 

-             var computed = tagClasses.getClassesString(t, value);
+           if (event) {
+             var s;

 
 

-             if (computed !== value) {
-               select(this).attr('class', computed);
+             while (s = event.sourceEvent) {
+               event = s;

              }
              }

-           });
-         };

 
 

-         tagClasses.getClassesString = function (t, value) {
-           var primary, status;
-           var i, j, k, v; // in some situations we want to render perimeter strokes a certain way
+             return _getMouseCoords(event);
+           }

 
 

-           var overrideGeometry;
+           return null;
+         }; // returns Lng/Lat

 
 

-           if (/\bstroke\b/.test(value)) {
-             if (!!t.barrier && t.barrier !== 'no') {
-               overrideGeometry = 'line';
-             }
-           } // preserve base classes (nothing with `tag-`)

 
 

+         map.mouseCoordinates = function () {
+           var coord = map.mouse() || pxCenter();
+           return projection.invert(coord);
+         };

 
 

-           var classes = value.trim().split(/\s+/).filter(function (klass) {
-             return klass.length && !/^tag-/.test(klass);
-           }).map(function (klass) {
-             // special overrides for some perimeter strokes
-             return klass === 'line' || klass === 'area' ? overrideGeometry || klass : klass;
-           }); // pick at most one primary classification tag..
+         map.dblclickZoomEnable = function (val) {
+           if (!arguments.length) return _dblClickZoomEnabled;
+           _dblClickZoomEnabled = val;
+           return map;
+         };

 
 

-           for (i = 0; i < primaries.length; i++) {
-             k = primaries[i];
-             v = t[k];
-             if (!v || v === 'no') continue;
+         map.redrawEnable = function (val) {
+           if (!arguments.length) return _redrawEnabled;
+           _redrawEnabled = val;
+           return map;
+         };

 
 

-             if (k === 'piste:type') {
-               // avoid a ':' in the class name
-               k = 'piste';
-             } else if (k === 'building:part') {
-               // avoid a ':' in the class name
-               k = 'building_part';
-             }
+         map.isTransformed = function () {
+           return _isTransformed;
+         };

 
 

-             primary = k;
+         function setTransform(t2, duration, force) {
+           var t = projection.transform();
+           if (!force && t2.k === t.k && t2.x === t.x && t2.y === t.y) return false;

 
 

-             if (statuses.indexOf(v) !== -1) {
-               // e.g. `railway=abandoned`
-               status = v;
-               classes.push('tag-' + k);
-             } else {
-               classes.push('tag-' + k);
-               classes.push('tag-' + k + '-' + v);
-             }
+           if (duration) {
+             _selection.transition().duration(duration).on('start', function () {
+               map.startEase();
+             }).call(_zoomerPanner.transform, identity$2.translate(t2.x, t2.y).scale(t2.k));
+           } else {
+             projection.transform(t2);
+             _transformStart = t2;

 
 

-             break;
+             _selection.call(_zoomerPanner.transform, _transformStart);

            }
 
            }
 

-           if (!primary) {
-             for (i = 0; i < statuses.length; i++) {
-               for (j = 0; j < primaries.length; j++) {
-                 k = statuses[i] + ':' + primaries[j]; // e.g. `demolished:building=yes`
+           return true;
+         }

 
 

-                 v = t[k];
-                 if (!v || v === 'no') continue;
-                 status = statuses[i];
-                 break;
-               }
-             }
-           } // add at most one status tag, only if relates to primary tag..
+         function setCenterZoom(loc2, z2, duration, force) {
+           var c = map.center();
+           var z = map.zoom();
+           if (loc2[0] === c[0] && loc2[1] === c[1] && z2 === z && !force) return false;
+           var proj = geoRawMercator().transform(projection.transform()); // copy projection

 
 

+           var k2 = clamp$1(geoZoomToScale(z2, TILESIZE), kMin, kMax);
+           proj.scale(k2);
+           var t = proj.translate();
+           var point = proj(loc2);
+           var center = pxCenter();
+           t[0] += center[0] - point[0];
+           t[1] += center[1] - point[1];
+           return setTransform(identity$2.translate(t[0], t[1]).scale(k2), duration, force);
+         }

 
 

-           if (!status) {
-             for (i = 0; i < statuses.length; i++) {
-               k = statuses[i];
-               v = t[k];
-               if (!v || v === 'no') continue;
+         map.pan = function (delta, duration) {
+           var t = projection.translate();
+           var k = projection.scale();
+           t[0] += delta[0];
+           t[1] += delta[1];

 
 

-               if (v === 'yes') {
-                 // e.g. `railway=rail + abandoned=yes`
-                 status = k;
-               } else if (primary && primary === v) {
-                 // e.g. `railway=rail + abandoned=railway`
-                 status = k;
-               } else if (!primary && primaries.indexOf(v) !== -1) {
-                 // e.g. `abandoned=railway`
-                 status = k;
-                 primary = v;
-                 classes.push('tag-' + v);
-               } // else ignore e.g.  `highway=path + abandoned=railway`
+           if (duration) {
+             _selection.transition().duration(duration).on('start', function () {
+               map.startEase();
+             }).call(_zoomerPanner.transform, identity$2.translate(t[0], t[1]).scale(k));
+           } else {
+             projection.translate(t);
+             _transformStart = projection.transform();

 
 

+             _selection.call(_zoomerPanner.transform, _transformStart);

 
 

-               if (status) break;
-             }
+             dispatch.call('move', this, map);
+             immediateRedraw();

            }
 
            }
 

-           if (status) {
-             classes.push('tag-status');
-             classes.push('tag-status-' + status);
-           } // add any secondary tags
+           return map;
+         };

 
 

+         map.dimensions = function (val) {
+           if (!arguments.length) return _dimensions;
+           _dimensions = val;
+           drawLayers.dimensions(_dimensions);
+           context.background().dimensions(_dimensions);
+           projection.clipExtent([[0, 0], _dimensions]);
+           _getMouseCoords = utilFastMouse(supersurface.node());
+           scheduleRedraw();
+           return map;
+         };

 
 

-           for (i = 0; i < secondaries.length; i++) {
-             k = secondaries[i];
-             v = t[k];
-             if (!v || v === 'no' || k === primary) continue;
-             classes.push('tag-' + k);
-             classes.push('tag-' + k + '-' + v);
-           } // For highways, look for surface tagging..
+         function zoomIn(delta) {
+           setCenterZoom(map.center(), ~~map.zoom() + delta, 250, true);
+         }

 
 

+         function zoomOut(delta) {
+           setCenterZoom(map.center(), ~~map.zoom() - delta, 250, true);
+         }

 
 

-           if (primary === 'highway' && !osmPathHighwayTagValues[t.highway] || primary === 'aeroway') {
-             var surface = t.highway === 'track' ? 'unpaved' : 'paved';
+         map.zoomIn = function () {
+           zoomIn(1);
+         };

 
 

-             for (k in t) {
-               v = t[k];
+         map.zoomInFurther = function () {
+           zoomIn(4);
+         };

 
 

-               if (k in osmPavedTags) {
-                 surface = osmPavedTags[k][v] ? 'paved' : 'unpaved';
-               }
+         map.canZoomIn = function () {
+           return map.zoom() < maxZoom;
+         };

 
 

-               if (k in osmSemipavedTags && !!osmSemipavedTags[k][v]) {
-                 surface = 'semipaved';
-               }
-             }
+         map.zoomOut = function () {
+           zoomOut(1);
+         };

 
 

-             classes.push('tag-' + surface);
-           } // If this is a wikidata-tagged item, add a class for that..
+         map.zoomOutFurther = function () {
+           zoomOut(4);
+         };

 
 

+         map.canZoomOut = function () {
+           return map.zoom() > minZoom;
+         };

 
 

-           if (t.wikidata || t['brand:wikidata']) {
-             classes.push('tag-wikidata');
+         map.center = function (loc2) {
+           if (!arguments.length) {
+             return projection.invert(pxCenter());

            }
 
            }
 

-           return classes.join(' ').trim();
+           if (setCenterZoom(loc2, map.zoom())) {
+             dispatch.call('move', this, map);
+           }
+
+           scheduleRedraw();
+           return map;

          };
 
          };
 

-         tagClasses.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val;
-           return tagClasses;
+         map.unobscuredCenterZoomEase = function (loc, zoom) {
+           var offset = map.unobscuredOffsetPx();
+           var proj = geoRawMercator().transform(projection.transform()); // copy projection
+           // use the target zoom to calculate the offset center
+
+           proj.scale(geoZoomToScale(zoom, TILESIZE));
+           var locPx = proj(loc);
+           var offsetLocPx = [locPx[0] + offset[0], locPx[1] + offset[1]];
+           var offsetLoc = proj.invert(offsetLocPx);
+           map.centerZoomEase(offsetLoc, zoom);

          };
 
          };
 

-         return tagClasses;
-       }
+         map.unobscuredOffsetPx = function () {
+           var openPane = context.container().select('.map-panes .map-pane.shown');

 
 

-       // Patterns only work in Firefox when set directly on element.
-       // (This is not a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=750632)
-       var patterns = {
-         // tag - pattern name
-         // -or-
-         // tag - value - pattern name
-         // -or-
-         // tag - value - rules (optional tag-values, pattern name)
-         // (matches earlier rules first, so fallback should be last entry)
-         amenity: {
-           grave_yard: 'cemetery',
-           fountain: 'water_standing'
-         },
-         landuse: {
-           cemetery: [{
-             religion: 'christian',
-             pattern: 'cemetery_christian'
-           }, {
-             religion: 'buddhist',
-             pattern: 'cemetery_buddhist'
-           }, {
-             religion: 'muslim',
-             pattern: 'cemetery_muslim'
-           }, {
-             religion: 'jewish',
-             pattern: 'cemetery_jewish'
-           }, {
-             pattern: 'cemetery'
-           }],
-           construction: 'construction',
-           farmland: 'farmland',
-           farmyard: 'farmyard',
-           forest: [{
-             leaf_type: 'broadleaved',
-             pattern: 'forest_broadleaved'
-           }, {
-             leaf_type: 'needleleaved',
-             pattern: 'forest_needleleaved'
-           }, {
-             leaf_type: 'leafless',
-             pattern: 'forest_leafless'
-           }, {
-             pattern: 'forest'
-           } // same as 'leaf_type:mixed'
-           ],
-           grave_yard: 'cemetery',
-           grass: [{
-             golf: 'green',
-             pattern: 'golf_green'
-           }, {
-             pattern: 'grass'
-           }],
-           landfill: 'landfill',
-           meadow: 'meadow',
-           military: 'construction',
-           orchard: 'orchard',
-           quarry: 'quarry',
-           vineyard: 'vineyard'
-         },
-         natural: {
-           beach: 'beach',
-           grassland: 'grass',
-           sand: 'beach',
-           scrub: 'scrub',
-           water: [{
-             water: 'pond',
-             pattern: 'pond'
-           }, {
-             water: 'reservoir',
-             pattern: 'water_standing'
-           }, {
-             pattern: 'waves'
-           }],
-           wetland: [{
-             wetland: 'marsh',
-             pattern: 'wetland_marsh'
-           }, {
-             wetland: 'swamp',
-             pattern: 'wetland_swamp'
-           }, {
-             wetland: 'bog',
-             pattern: 'wetland_bog'
-           }, {
-             wetland: 'reedbed',
-             pattern: 'wetland_reedbed'
-           }, {
-             pattern: 'wetland'
-           }],
-           wood: [{
-             leaf_type: 'broadleaved',
-             pattern: 'forest_broadleaved'
-           }, {
-             leaf_type: 'needleleaved',
-             pattern: 'forest_needleleaved'
-           }, {
-             leaf_type: 'leafless',
-             pattern: 'forest_leafless'
-           }, {
-             pattern: 'forest'
-           } // same as 'leaf_type:mixed'
-           ]
-         },
-         traffic_calming: {
-           island: [{
-             surface: 'grass',
-             pattern: 'grass'
-           }],
-           chicane: [{
-             surface: 'grass',
-             pattern: 'grass'
-           }],
-           choker: [{
-             surface: 'grass',
-             pattern: 'grass'
-           }]
-         }
-       };
-       function svgTagPattern(tags) {
-         // Skip pattern filling if this is a building (buildings don't get patterns applied)
-         if (tags.building && tags.building !== 'no') {
-           return null;
-         }
+           if (!openPane.empty()) {
+             return [openPane.node().offsetWidth / 2, 0];
+           }

 
 

-         for (var tag in patterns) {
-           var entityValue = tags[tag];
-           if (!entityValue) continue;
+           return [0, 0];
+         };

 
 

-           if (typeof patterns[tag] === 'string') {
-             // extra short syntax (just tag) - pattern name
-             return 'pattern-' + patterns[tag];
-           } else {
-             var values = patterns[tag];
+         map.zoom = function (z2) {
+           if (!arguments.length) {
+             return Math.max(geoScaleToZoom(projection.scale(), TILESIZE), 0);
+           }

 
 

-             for (var value in values) {
-               if (entityValue !== value) continue;
-               var rules = values[value];
+           if (z2 < _minzoom) {
+             surface.interrupt();
+             dispatch.call('hitMinZoom', this, map);
+             z2 = context.minEditableZoom();
+           }

 
 

-               if (typeof rules === 'string') {
-                 // short syntax - pattern name
-                 return 'pattern-' + rules;
-               } // long syntax - rule array
+           if (setCenterZoom(map.center(), z2)) {
+             dispatch.call('move', this, map);
+           }

 
 

+           scheduleRedraw();
+           return map;
+         };

 
 

-               for (var ruleKey in rules) {
-                 var rule = rules[ruleKey];
-                 var pass = true;
+         map.centerZoom = function (loc2, z2) {
+           if (setCenterZoom(loc2, z2)) {
+             dispatch.call('move', this, map);
+           }
+
+           scheduleRedraw();
+           return map;
+         };
+
+         map.zoomTo = function (entity) {
+           var extent = entity.extent(context.graph());
+           if (!isFinite(extent.area())) return map;
+           var z2 = clamp$1(map.trimmedExtentZoom(extent), 0, 20);
+           return map.centerZoom(extent.center(), z2);
+         };
+
+         map.centerEase = function (loc2, duration) {
+           duration = duration || 250;
+           setCenterZoom(loc2, map.zoom(), duration);
+           return map;
+         };
+
+         map.zoomEase = function (z2, duration) {
+           duration = duration || 250;
+           setCenterZoom(map.center(), z2, duration, false);
+           return map;
+         };
+
+         map.centerZoomEase = function (loc2, z2, duration) {
+           duration = duration || 250;
+           setCenterZoom(loc2, z2, duration, false);
+           return map;
+         };
+
+         map.transformEase = function (t2, duration) {
+           duration = duration || 250;
+           setTransform(t2, duration, false
+           /* don't force */
+           );
+           return map;
+         };

 
 

-                 for (var criterion in rule) {
-                   if (criterion !== 'pattern') {
-                     // reserved for pattern name
-                     // The only rule is a required tag-value pair
-                     var v = tags[criterion];
+         map.zoomToEase = function (obj, duration) {
+           var extent;

 
 

-                     if (!v || v !== rule[criterion]) {
-                       pass = false;
-                       break;
-                     }
-                   }
-                 }
+           if (Array.isArray(obj)) {
+             obj.forEach(function (entity) {
+               var entityExtent = entity.extent(context.graph());

 
 

-                 if (pass) {
-                   return 'pattern-' + rule.pattern;
-                 }
+               if (!extent) {
+                 extent = entityExtent;
+               } else {
+                 extent = extent.extend(entityExtent);

                }
                }

-             }
+             });
+           } else {
+             extent = obj.extent(context.graph());

            }
            }

-         }

 
 

-         return null;
-       }
+           if (!isFinite(extent.area())) return map;
+           var z2 = clamp$1(map.trimmedExtentZoom(extent), 0, 20);
+           return map.centerZoomEase(extent.center(), z2, duration);
+         };

 
 

-       function svgAreas(projection, context) {
-         function getPatternStyle(tags) {
-           var imageID = svgTagPattern(tags);
+         map.startEase = function () {
+           utilBindOnce(surface, _pointerPrefix + 'down.ease', function () {
+             map.cancelEase();
+           });
+           return map;
+         };

 
 

-           if (imageID) {
-             return 'url("#ideditor-' + imageID + '")';
-           }
+         map.cancelEase = function () {
+           _selection.interrupt();

 
 

-           return '';
-         }
+           return map;
+         };

 
 

-         function drawTargets(selection, graph, entities, filter) {
-           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
-           var getPath = svgPath(projection).geojson;
-           var activeID = context.activeID();
-           var base = context.history().base(); // The targets and nopes will be MultiLineString sub-segments of the ways
+         map.extent = function (val) {
+           if (!arguments.length) {
+             return new geoExtent(projection.invert([0, _dimensions[1]]), projection.invert([_dimensions[0], 0]));
+           } else {
+             var extent = geoExtent(val);
+             map.centerZoom(extent.center(), map.extentZoom(extent));
+           }
+         };

 
 

-           var data = {
-             targets: [],
-             nopes: []
-           };
-           entities.forEach(function (way) {
-             var features = svgSegmentWay(way, graph, activeID);
-             data.targets.push.apply(data.targets, features.passive);
-             data.nopes.push.apply(data.nopes, features.active);
-           }); // Targets allow hover and vertex snapping
+         map.trimmedExtent = function (val) {
+           if (!arguments.length) {
+             var headerY = 71;
+             var footerY = 30;
+             var pad = 10;
+             return new geoExtent(projection.invert([pad, _dimensions[1] - footerY - pad]), projection.invert([_dimensions[0] - pad, headerY + pad]));
+           } else {
+             var extent = geoExtent(val);
+             map.centerZoom(extent.center(), map.trimmedExtentZoom(extent));
+           }
+         };

 
 

-           var targetData = data.targets.filter(getPath);
-           var targets = selection.selectAll('.area.target-allowed').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(targetData, function key(d) {
-             return d.id;
-           }); // exit
+         function calcExtentZoom(extent, dim) {
+           var tl = projection([extent[0][0], extent[1][1]]);
+           var br = projection([extent[1][0], extent[0][1]]); // Calculate maximum zoom that fits extent

 
 

-           targets.exit().remove();
+           var hFactor = (br[0] - tl[0]) / dim[0];
+           var vFactor = (br[1] - tl[1]) / dim[1];
+           var hZoomDiff = Math.log(Math.abs(hFactor)) / Math.LN2;
+           var vZoomDiff = Math.log(Math.abs(vFactor)) / Math.LN2;
+           var newZoom = map.zoom() - Math.max(hZoomDiff, vZoomDiff);
+           return newZoom;
+         }

 
 

-           var segmentWasEdited = function segmentWasEdited(d) {
-             var wayID = d.properties.entity.id; // if the whole line was edited, don't draw segment changes
+         map.extentZoom = function (val) {
+           return calcExtentZoom(geoExtent(val), _dimensions);
+         };

 
 

-             if (!base.entities[wayID] || !fastDeepEqual(graph.entities[wayID].nodes, base.entities[wayID].nodes)) {
-               return false;
-             }
+         map.trimmedExtentZoom = function (val) {
+           var trimY = 120;
+           var trimX = 40;
+           var trimmed = [_dimensions[0] - trimX, _dimensions[1] - trimY];
+           return calcExtentZoom(geoExtent(val), trimmed);
+         };

 
 

-             return d.properties.nodes.some(function (n) {
-               return !base.entities[n.id] || !fastDeepEqual(graph.entities[n.id].loc, base.entities[n.id].loc);
-             });
-           }; // enter/update
+         map.withinEditableZoom = function () {
+           return map.zoom() >= context.minEditableZoom();
+         };
+
+         map.isInWideSelection = function () {
+           return !map.withinEditableZoom() && context.selectedIDs().length;
+         };

 
 

+         map.editableDataEnabled = function (skipZoomCheck) {
+           var layer = context.layers().layer('osm');
+           if (!layer || !layer.enabled()) return false;
+           return skipZoomCheck || map.withinEditableZoom();
+         };

 
 

-           targets.enter().append('path').merge(targets).attr('d', getPath).attr('class', function (d) {
-             return 'way area target target-allowed ' + targetClass + d.id;
-           }).classed('segment-edited', segmentWasEdited); // NOPE
+         map.notesEditable = function () {
+           var layer = context.layers().layer('notes');
+           if (!layer || !layer.enabled()) return false;
+           return map.withinEditableZoom();
+         };

 
 

-           var nopeData = data.nopes.filter(getPath);
-           var nopes = selection.selectAll('.area.target-nope').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(nopeData, function key(d) {
-             return d.id;
-           }); // exit
+         map.minzoom = function (val) {
+           if (!arguments.length) return _minzoom;
+           _minzoom = val;
+           return map;
+         };

 
 

-           nopes.exit().remove(); // enter/update
+         map.toggleHighlightEdited = function () {
+           surface.classed('highlight-edited', !surface.classed('highlight-edited'));
+           map.pan([0, 0]); // trigger a redraw

 
 

-           nopes.enter().append('path').merge(nopes).attr('d', getPath).attr('class', function (d) {
-             return 'way area target target-nope ' + nopeClass + d.id;
-           }).classed('segment-edited', segmentWasEdited);
-         }
+           dispatch.call('changeHighlighting', this);
+         };

 
 

-         function drawAreas(selection, graph, entities, filter) {
-           var path = svgPath(projection, graph, true);
-           var areas = {};
-           var multipolygon;
-           var base = context.history().base();
+         map.areaFillOptions = ['wireframe', 'partial', 'full'];

 
 

-           for (var i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             if (entity.geometry(graph) !== 'area') continue;
-             multipolygon = osmIsOldMultipolygonOuterMember(entity, graph);
+         map.activeAreaFill = function (val) {
+           if (!arguments.length) return corePreferences('area-fill') || 'partial';
+           corePreferences('area-fill', val);

 
 

-             if (multipolygon) {
-               areas[multipolygon.id] = {
-                 entity: multipolygon.mergeTags(entity.tags),
-                 area: Math.abs(entity.area(graph))
-               };
-             } else if (!areas[entity.id]) {
-               areas[entity.id] = {
-                 entity: entity,
-                 area: Math.abs(entity.area(graph))
-               };
-             }
+           if (val !== 'wireframe') {
+             corePreferences('area-fill-toggle', val);

            }
 
            }
 

-           var fills = Object.values(areas).filter(function hasPath(a) {
-             return path(a.entity);
-           });
-           fills.sort(function areaSort(a, b) {
-             return b.area - a.area;
-           });
-           fills = fills.map(function (a) {
-             return a.entity;
-           });
-           var strokes = fills.filter(function (area) {
-             return area.type === 'way';
-           });
-           var data = {
-             clip: fills,
-             shadow: strokes,
-             stroke: strokes,
-             fill: fills
-           };
-           var clipPaths = context.surface().selectAll('defs').selectAll('.clipPath-osm').filter(filter).data(data.clip, osmEntity.key);
-           clipPaths.exit().remove();
-           var clipPathsEnter = clipPaths.enter().append('clipPath').attr('class', 'clipPath-osm').attr('id', function (entity) {
-             return 'ideditor-' + entity.id + '-clippath';
-           });
-           clipPathsEnter.append('path');
-           clipPaths.merge(clipPathsEnter).selectAll('path').attr('d', path);
-           var drawLayer = selection.selectAll('.layer-osm.areas');
-           var touchLayer = selection.selectAll('.layer-touch.areas'); // Draw areas..
+           updateAreaFill();
+           map.pan([0, 0]); // trigger a redraw

 
 

-           var areagroup = drawLayer.selectAll('g.areagroup').data(['fill', 'shadow', 'stroke']);
-           areagroup = areagroup.enter().append('g').attr('class', function (d) {
-             return 'areagroup area-' + d;
-           }).merge(areagroup);
-           var paths = areagroup.selectAll('path').filter(filter).data(function (layer) {
-             return data[layer];
-           }, osmEntity.key);
-           paths.exit().remove();
-           var fillpaths = selection.selectAll('.area-fill path.area').nodes();
-           var bisect = d3_bisector(function (node) {
-             return -node.__data__.area(graph);
-           }).left;
+           dispatch.call('changeAreaFill', this);
+           return map;
+         };

 
 

-           function sortedByArea(entity) {
-             if (this._parent.__data__ === 'fill') {
-               return fillpaths[bisect(fillpaths, -entity.area(graph))];
-             }
-           }
+         map.toggleWireframe = function () {
+           var activeFill = map.activeAreaFill();

 
 

-           paths = paths.enter().insert('path', sortedByArea).merge(paths).each(function (entity) {
-             var layer = this.parentNode.__data__;
-             this.setAttribute('class', entity.type + ' area ' + layer + ' ' + entity.id);
+           if (activeFill === 'wireframe') {
+             activeFill = corePreferences('area-fill-toggle') || 'partial';
+           } else {
+             activeFill = 'wireframe';
+           }

 
 

-             if (layer === 'fill') {
-               this.setAttribute('clip-path', 'url(#ideditor-' + entity.id + '-clippath)');
-               this.style.fill = this.style.stroke = getPatternStyle(entity.tags);
-             }
-           }).classed('added', function (d) {
-             return !base.entities[d.id];
-           }).classed('geometry-edited', function (d) {
-             return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].nodes, base.entities[d.id].nodes);
-           }).classed('retagged', function (d) {
-             return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
-           }).call(svgTagClasses()).attr('d', path); // Draw touch targets..
+           map.activeAreaFill(activeFill);
+         };

 
 

-           touchLayer.call(drawTargets, graph, data.stroke, filter);
+         function updateAreaFill() {
+           var activeFill = map.activeAreaFill();
+           map.areaFillOptions.forEach(function (opt) {
+             surface.classed('fill-' + opt, Boolean(opt === activeFill));
+           });

          }
 
          }
 

-         return drawAreas;
+         map.layers = function () {
+           return drawLayers;
+         };
+
+         map.doubleUpHandler = function () {
+           return _doubleUpHandler;
+         };
+
+         return utilRebind(map, dispatch, 'on');

        }
 
        }
 

-       //[4]           NameStartChar      ::=          ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
-       //[4a]          NameChar           ::=          NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
-       //[5]           Name       ::=          NameStartChar (NameChar)*
-       var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/; //\u10000-\uEFFFF
+       function rendererPhotos(context) {
+         var dispatch = dispatch$8('change');
+         var _layerIDs = ['streetside', 'mapillary', 'mapillary-map-features', 'mapillary-signs', 'openstreetcam'];
+         var _allPhotoTypes = ['flat', 'panoramic'];
+
+         var _shownPhotoTypes = _allPhotoTypes.slice(); // shallow copy

 
 

-       var nameChar = new RegExp("[\\-\\.0-9" + nameStartChar.source.slice(1, -1) + "\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
-       var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\:' + nameStartChar.source + nameChar.source + '*)?$'); //var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
-       //var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
-       //S_TAG,        S_ATTR, S_EQ,   S_ATTR_NOQUOT_VALUE
-       //S_ATTR_SPACE, S_ATTR_END,     S_TAG_SPACE, S_TAG_CLOSE

 
 

-       var S_TAG = 0; //tag name offerring
+         var _dateFilters = ['fromDate', 'toDate'];

 
 

-       var S_ATTR = 1; //attr name offerring 
+         var _fromDate;

 
 

-       var S_ATTR_SPACE = 2; //attr name end and space offer
+         var _toDate;

 
 

-       var S_EQ = 3; //=space?
+         var _usernames;

 
 

-       var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)
+         function photos() {}

 
 

-       var S_ATTR_END = 5; //attr value end and no space(quot end)
+         function updateStorage() {
+           if (window.mocha) return;
+           var hash = utilStringQs(window.location.hash);
+           var enabled = context.layers().all().filter(function (d) {
+             return _layerIDs.indexOf(d.id) !== -1 && d.layer && d.layer.supported() && d.layer.enabled();
+           }).map(function (d) {
+             return d.id;
+           });

 
 

-       var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)
+           if (enabled.length) {
+             hash.photo_overlay = enabled.join(',');
+           } else {
+             delete hash.photo_overlay;
+           }

 
 

-       var S_TAG_CLOSE = 7; //closed el<el />
+           window.location.replace('#' + utilQsString(hash, true));
+         }

 
 

-       function XMLReader() {}
+         photos.overlayLayerIDs = function () {
+           return _layerIDs;
+         };

 
 

-       XMLReader.prototype = {
-         parse: function parse(source, defaultNSMap, entityMap) {
-           var domBuilder = this.domBuilder;
-           domBuilder.startDocument();
+         photos.allPhotoTypes = function () {
+           return _allPhotoTypes;
+         };

 
 

-           _copy(defaultNSMap, defaultNSMap = {});
+         photos.dateFilters = function () {
+           return _dateFilters;
+         };

 
 

-           _parse(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);
+         photos.dateFilterValue = function (val) {
+           return val === _dateFilters[0] ? _fromDate : _toDate;
+         };

 
 

-           domBuilder.endDocument();
-         }
-       };
+         photos.setDateFilter = function (type, val, updateUrl) {
+           // validate the date
+           var date = val && new Date(val);

 
 

-       function _parse(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {
-         function fixedFromCharCode(code) {
-           // String.prototype.fromCharCode does not supports
-           // > 2 bytes unicode chars directly
-           if (code > 0xffff) {
-             code -= 0x10000;
-             var surrogate1 = 0xd800 + (code >> 10),
-                 surrogate2 = 0xdc00 + (code & 0x3ff);
-             return String.fromCharCode(surrogate1, surrogate2);
+           if (date && !isNaN(date)) {
+             val = date.toISOString().substr(0, 10);

            } else {
            } else {

-             return String.fromCharCode(code);
+             val = null;

            }
            }

-         }

 
 

-         function entityReplacer(a) {
-           var k = a.slice(1, -1);
+           if (type === _dateFilters[0]) {
+             _fromDate = val;

 
 

-           if (k in entityMap) {
-             return entityMap[k];
-           } else if (k.charAt(0) === '#') {
-             return fixedFromCharCode(parseInt(k.substr(1).replace('x', '0x')));
-           } else {
-             errorHandler.error('entity not found:' + a);
-             return a;
+             if (_fromDate && _toDate && new Date(_toDate) < new Date(_fromDate)) {
+               _toDate = _fromDate;
+             }

            }
            }

-         }

 
 

-         function appendText(end) {
-           //has some bugs
-           if (end > start) {
-             var xt = source.substring(start, end).replace(/&#?\w+;/g, entityReplacer);
-             locator && position(start);
-             domBuilder.characters(xt, 0, end - start);
-             start = end;
-           }
-         }
+           if (type === _dateFilters[1]) {
+             _toDate = val;

 
 

-         function position(p, m) {
-           while (p >= lineEnd && (m = linePattern.exec(source))) {
-             lineStart = m.index;
-             lineEnd = lineStart + m[0].length;
-             locator.lineNumber++; //console.log('line++:',locator,startPos,endPos)
+             if (_fromDate && _toDate && new Date(_toDate) < new Date(_fromDate)) {
+               _fromDate = _toDate;
+             }

            }
 
            }
 

-           locator.columnNumber = p - lineStart + 1;
-         }
+           dispatch.call('change', this);

 
 

-         var lineStart = 0;
-         var lineEnd = 0;
-         var linePattern = /.*(?:\r\n?|\n)|.*$/g;
-         var locator = domBuilder.locator;
-         var parseStack = [{
-           currentNSMap: defaultNSMapCopy
-         }];
-         var closeMap = {};
-         var start = 0;
+           if (updateUrl) {
+             var rangeString;

 
 

-         while (true) {
-           try {
-             var tagStart = source.indexOf('<', start);
+             if (_fromDate || _toDate) {
+               rangeString = (_fromDate || '') + '_' + (_toDate || '');
+             }

 
 

-             if (tagStart < 0) {
-               if (!source.substr(start).match(/^\s*$/)) {
-                 var doc = domBuilder.doc;
-                 var text = doc.createTextNode(source.substr(start));
-                 doc.appendChild(text);
-                 domBuilder.currentElement = text;
-               }
+             setUrlFilterValue('photo_dates', rangeString);
+           }
+         };

 
 

-               return;
-             }
+         photos.setUsernameFilter = function (val, updateUrl) {
+           if (val && typeof val === 'string') val = val.replace(/;/g, ',').split(',');

 
 

-             if (tagStart > start) {
-               appendText(tagStart);
-             }
+           if (val) {
+             val = val.map(function (d) {
+               return d.trim();
+             }).filter(Boolean);

 
 

-             switch (source.charAt(tagStart + 1)) {
-               case '/':
-                 var end = source.indexOf('>', tagStart + 3);
-                 var tagName = source.substring(tagStart + 2, end);
-                 var config = parseStack.pop();
+             if (!val.length) {
+               val = null;
+             }
+           }

 
 

-                 if (end < 0) {
-                   tagName = source.substring(tagStart + 2).replace(/[\s<].*/, ''); //console.error('#@@@@@@'+tagName)
+           _usernames = val;
+           dispatch.call('change', this);

 
 

-                   errorHandler.error("end tag name: " + tagName + ' is not complete:' + config.tagName);
-                   end = tagStart + 1 + tagName.length;
-                 } else if (tagName.match(/\s</)) {
-                   tagName = tagName.replace(/[\s<].*/, '');
-                   errorHandler.error("end tag name: " + tagName + ' maybe not complete');
-                   end = tagStart + 1 + tagName.length;
-                 } //console.error(parseStack.length,parseStack)
-                 //console.error(config);
+           if (updateUrl) {
+             var hashString;

 
 

+             if (_usernames) {
+               hashString = _usernames.join(',');
+             }

 
 

-                 var localNSMap = config.localNSMap;
-                 var endMatch = config.tagName == tagName;
-                 var endIgnoreCaseMach = endMatch || config.tagName && config.tagName.toLowerCase() == tagName.toLowerCase();
+             setUrlFilterValue('photo_username', hashString);
+           }
+         };

 
 

-                 if (endIgnoreCaseMach) {
-                   domBuilder.endElement(config.uri, config.localName, tagName);
+         function setUrlFilterValue(property, val) {
+           if (!window.mocha) {
+             var hash = utilStringQs(window.location.hash);

 
 

-                   if (localNSMap) {
-                     for (var prefix in localNSMap) {
-                       domBuilder.endPrefixMapping(prefix);
-                     }
-                   }
+             if (val) {
+               if (hash[property] === val) return;
+               hash[property] = val;
+             } else {
+               if (!(property in hash)) return;
+               delete hash[property];
+             }

 
 

-                   if (!endMatch) {
-                     errorHandler.fatalError("end tag name: " + tagName + ' is not match the current start tagName:' + config.tagName);
-                   }
-                 } else {
-                   parseStack.push(config);
-                 }
+             window.location.replace('#' + utilQsString(hash, true));
+           }
+         }

 
 

-                 end++;
-                 break;
-               // end elment
+         function showsLayer(id) {
+           var layer = context.layers().layer(id);
+           return layer && layer.supported() && layer.enabled();
+         }

 
 

-               case '?':
-                 // <?...?>
-                 locator && position(tagStart);
-                 end = parseInstruction(source, tagStart, domBuilder);
-                 break;
+         photos.shouldFilterByDate = function () {
+           return showsLayer('mapillary') || showsLayer('openstreetcam') || showsLayer('streetside');
+         };

 
 

-               case '!':
-                 // <!doctype,<![CDATA,<!--
-                 locator && position(tagStart);
-                 end = parseDCC(source, tagStart, domBuilder, errorHandler);
-                 break;
+         photos.shouldFilterByPhotoType = function () {
+           return showsLayer('mapillary') || showsLayer('streetside') && showsLayer('openstreetcam');
+         };

 
 

-               default:
-                 locator && position(tagStart);
-                 var el = new ElementAttributes();
-                 var currentNSMap = parseStack[parseStack.length - 1].currentNSMap; //elStartEnd
+         photos.shouldFilterByUsername = function () {
+           return !showsLayer('mapillary') && showsLayer('openstreetcam') && !showsLayer('streetside');
+         };

 
 

-                 var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler);
-                 var len = el.length;
+         photos.showsPhotoType = function (val) {
+           if (!photos.shouldFilterByPhotoType()) return true;
+           return _shownPhotoTypes.indexOf(val) !== -1;
+         };

 
 

-                 if (!el.closed && fixSelfClosed(source, end, el.tagName, closeMap)) {
-                   el.closed = true;
+         photos.showsFlat = function () {
+           return photos.showsPhotoType('flat');
+         };

 
 

-                   if (!entityMap.nbsp) {
-                     errorHandler.warning('unclosed xml attribute');
-                   }
-                 }
+         photos.showsPanoramic = function () {
+           return photos.showsPhotoType('panoramic');
+         };

 
 

-                 if (locator && len) {
-                   var locator2 = copyLocator(locator, {}); //try{//attribute position fixed
+         photos.fromDate = function () {
+           return _fromDate;
+         };

 
 

-                   for (var i = 0; i < len; i++) {
-                     var a = el[i];
-                     position(a.offset);
-                     a.locator = copyLocator(locator, {});
-                   } //}catch(e){console.error('@@@@@'+e)}
+         photos.toDate = function () {
+           return _toDate;
+         };

 
 

+         photos.togglePhotoType = function (val) {
+           var index = _shownPhotoTypes.indexOf(val);

 
 

-                   domBuilder.locator = locator2;
+           if (index !== -1) {
+             _shownPhotoTypes.splice(index, 1);
+           } else {
+             _shownPhotoTypes.push(val);
+           }

 
 

-                   if (appendElement(el, domBuilder, currentNSMap)) {
-                     parseStack.push(el);
-                   }
+           dispatch.call('change', this);
+           return photos;
+         };

 
 

-                   domBuilder.locator = locator;
-                 } else {
-                   if (appendElement(el, domBuilder, currentNSMap)) {
-                     parseStack.push(el);
-                   }
-                 }
+         photos.usernames = function () {
+           return _usernames;
+         };

 
 

-                 if (el.uri === 'http://www.w3.org/1999/xhtml' && !el.closed) {
-                   end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);
-                 } else {
-                   end++;
-                 }
+         photos.init = function () {
+           var hash = utilStringQs(window.location.hash);

 
 

-             }
-           } catch (e) {
-             errorHandler.error('element parse error: ' + e); //errorHandler.error('element parse error: '+e);
+           if (hash.photo_dates) {
+             // expect format like `photo_dates=2019-01-01_2020-12-31`, but allow a couple different separators
+             var parts = /^(.*)[–_](.*)$/g.exec(hash.photo_dates.trim());
+             this.setDateFilter('fromDate', parts && parts.length >= 2 && parts[1], false);
+             this.setDateFilter('toDate', parts && parts.length >= 3 && parts[2], false);
+           }

 
 

-             end = -1; //throw e;
+           if (hash.photo_username) {
+             this.setUsernameFilter(hash.photo_username, false);

            }
 
            }
 

-           if (end > start) {
-             start = end;
-           } else {
-             //TODO: 这里有可能sax回退，有位置错误风险
-             appendText(Math.max(tagStart, start) + 1);
+           if (hash.photo_overlay) {
+             // support enabling photo layers by default via a URL parameter, e.g. `photo_overlay=openstreetcam;mapillary;streetside`
+             var hashOverlayIDs = hash.photo_overlay.replace(/;/g, ',').split(',');
+             hashOverlayIDs.forEach(function (id) {
+               var layer = _layerIDs.indexOf(id) !== -1 && context.layers().layer(id);
+               if (layer && !layer.enabled()) layer.enabled(true);
+             });

            }
            }

-         }
-       }

 
 

-       function copyLocator(f, t) {
-         t.lineNumber = f.lineNumber;
-         t.columnNumber = f.columnNumber;
-         return t;
-       }
-       /**
-        * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
-        * @return end of the elementStartPart(end of elementEndPart for selfClosed el)
-        */
+           if (hash.photo) {
+             // support opening a photo via a URL parameter, e.g. `photo=mapillary-fztgSDtLpa08ohPZFZjeRQ`
+             var photoIds = hash.photo.replace(/;/g, ',').split(',');
+             var photoId = photoIds.length && photoIds[0].trim();
+             var results = /(.*)\/(.*)/g.exec(photoId);

 
 

+             if (results && results.length >= 3) {
+               var serviceId = results[1];
+               var photoKey = results[2];
+               var service = services[serviceId];

 
 

-       function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler) {
-         var attrName;
-         var value;
-         var p = ++start;
-         var s = S_TAG; //status
+               if (service && service.ensureViewerLoaded) {
+                 // if we're showing a photo then make sure its layer is enabled too
+                 var layer = _layerIDs.indexOf(serviceId) !== -1 && context.layers().layer(serviceId);
+                 if (layer && !layer.enabled()) layer.enabled(true);
+                 var baselineTime = Date.now();
+                 service.on('loadedImages.rendererPhotos', function () {
+                   // don't open the viewer if too much time has elapsed
+                   if (Date.now() - baselineTime > 45000) {
+                     service.on('loadedImages.rendererPhotos', null);
+                     return;
+                   }

 
 

-         while (true) {
-           var c = source.charAt(p);
-
-           switch (c) {
-             case '=':
-               if (s === S_ATTR) {
-                 //attrName
-                 attrName = source.slice(start, p);
-                 s = S_EQ;
-               } else if (s === S_ATTR_SPACE) {
-                 s = S_EQ;
-               } else {
-                 //fatalError: equal must after attrName or space after attrName
-                 throw new Error('attribute equal must after attrName');
+                   if (!service.cachedImage(photoKey)) return;
+                   service.on('loadedImages.rendererPhotos', null);
+                   service.ensureViewerLoaded(context).then(function () {
+                     service.selectImage(context, photoKey).showViewer(context);
+                   });
+                 });

                }
                }

+             }
+           }

 
 

-               break;
-
-             case '\'':
-             case '"':
-               if (s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
-               ) {
-                   //equal
-                   if (s === S_ATTR) {
-                     errorHandler.warning('attribute value must after "="');
-                     attrName = source.slice(start, p);
-                   }
-
-                   start = p + 1;
-                   p = source.indexOf(c, start);
+           context.layers().on('change.rendererPhotos', updateStorage);
+         };

 
 

-                   if (p > 0) {
-                     value = source.slice(start, p).replace(/&#?\w+;/g, entityReplacer);
-                     el.add(attrName, value, start - 1);
-                     s = S_ATTR_END;
-                   } else {
-                     //fatalError: no end quot match
-                     throw new Error('attribute value no end \'' + c + '\' match');
-                   }
-                 } else if (s == S_ATTR_NOQUOT_VALUE) {
-                 value = source.slice(start, p).replace(/&#?\w+;/g, entityReplacer); //console.log(attrName,value,start,p)
+         return utilRebind(photos, dispatch, 'on');
+       }

 
 

-                 el.add(attrName, value, start); //console.dir(el)
+       function uiAccount(context) {
+         var osm = context.connection();

 
 

-                 errorHandler.warning('attribute "' + attrName + '" missed start quot(' + c + ')!!');
-                 start = p + 1;
-                 s = S_ATTR_END;
-               } else {
-                 //fatalError: no equal before
-                 throw new Error('attribute value must after "="');
-               }
+         function update(selection) {
+           if (!osm) return;

 
 

-               break;
+           if (!osm.authenticated()) {
+             selection.selectAll('.userLink, .logoutLink').classed('hide', true);
+             return;
+           }

 
 

-             case '/':
-               switch (s) {
-                 case S_TAG:
-                   el.setTagName(source.slice(start, p));
+           osm.userDetails(function (err, details) {
+             var userLink = selection.select('.userLink'),
+                 logoutLink = selection.select('.logoutLink');
+             userLink.html('');
+             logoutLink.html('');
+             if (err || !details) return;
+             selection.selectAll('.userLink, .logoutLink').classed('hide', false); // Link

 
 

-                 case S_ATTR_END:
-                 case S_TAG_SPACE:
-                 case S_TAG_CLOSE:
-                   s = S_TAG_CLOSE;
-                   el.closed = true;
+             var userLinkA = userLink.append('a').attr('href', osm.userURL(details.display_name)).attr('target', '_blank'); // Add thumbnail or dont

 
 

-                 case S_ATTR_NOQUOT_VALUE:
-                 case S_ATTR:
-                 case S_ATTR_SPACE:
-                   break;
-                 //case S_EQ:
+             if (details.image_url) {
+               userLinkA.append('img').attr('class', 'icon pre-text user-icon').attr('src', details.image_url);
+             } else {
+               userLinkA.call(svgIcon('#iD-icon-avatar', 'pre-text light'));
+             } // Add user name

 
 

-                 default:
-                   throw new Error("attribute invalid close char('/')");
-               }

 
 

-               break;
+             userLinkA.append('span').attr('class', 'label').html(details.display_name);
+             logoutLink.append('a').attr('class', 'logout').attr('href', '#').html(_t.html('logout')).on('click.logout', function (d3_event) {
+               d3_event.preventDefault();
+               osm.logout();
+             });
+           });
+         }

 
 

-             case '':
-               //end document
-               //throw new Error('unexpected end of input')
-               errorHandler.error('unexpected end of input');
+         return function (selection) {
+           selection.append('li').attr('class', 'userLink').classed('hide', true);
+           selection.append('li').attr('class', 'logoutLink').classed('hide', true);

 
 

-               if (s == S_TAG) {
-                 el.setTagName(source.slice(start, p));
-               }
+           if (osm) {
+             osm.on('change.account', function () {
+               update(selection);
+             });
+             update(selection);
+           }
+         };
+       }

 
 

-               return p;
+       function uiAttribution(context) {
+         var _selection = select(null);

 
 

-             case '>':
-               switch (s) {
-                 case S_TAG:
-                   el.setTagName(source.slice(start, p));
+         function render(selection, data, klass) {
+           var div = selection.selectAll(".".concat(klass)).data([0]);
+           div = div.enter().append('div').attr('class', klass).merge(div);
+           var attributions = div.selectAll('.attribution').data(data, function (d) {
+             return d.id;
+           });
+           attributions.exit().remove();
+           attributions = attributions.enter().append('span').attr('class', 'attribution').each(function (d, i, nodes) {
+             var attribution = select(nodes[i]);

 
 

-                 case S_ATTR_END:
-                 case S_TAG_SPACE:
-                 case S_TAG_CLOSE:
-                   break;
-                 //normal
+             if (d.terms_html) {
+               attribution.html(d.terms_html);
+               return;
+             }

 
 

-                 case S_ATTR_NOQUOT_VALUE: //Compatible state
+             if (d.terms_url) {
+               attribution = attribution.append('a').attr('href', d.terms_url).attr('target', '_blank');
+             }

 
 

-                 case S_ATTR:
-                   value = source.slice(start, p);
+             var sourceID = d.id.replace(/\./g, '<TX_DOT>');
+             var terms_text = _t("imagery.".concat(sourceID, ".attribution.text"), {
+               "default": d.terms_text || d.id || d.name()
+             });

 
 

-                   if (value.slice(-1) === '/') {
-                     el.closed = true;
-                     value = value.slice(0, -1);
-                   }
+             if (d.icon && !d.overlay) {
+               attribution.append('img').attr('class', 'source-image').attr('src', d.icon);
+             }

 
 

-                 case S_ATTR_SPACE:
-                   if (s === S_ATTR_SPACE) {
-                     value = attrName;
-                   }
+             attribution.append('span').attr('class', 'attribution-text').html(terms_text);
+           }).merge(attributions);
+           var copyright = attributions.selectAll('.copyright-notice').data(function (d) {
+             var notice = d.copyrightNotices(context.map().zoom(), context.map().extent());
+             return notice ? [notice] : [];
+           });
+           copyright.exit().remove();
+           copyright = copyright.enter().append('span').attr('class', 'copyright-notice').merge(copyright);
+           copyright.html(String);
+         }

 
 

-                   if (s == S_ATTR_NOQUOT_VALUE) {
-                     errorHandler.warning('attribute "' + value + '" missed quot(")!!');
-                     el.add(attrName, value.replace(/&#?\w+;/g, entityReplacer), start);
-                   } else {
-                     if (currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !value.match(/^(?:disabled|checked|selected)$/i)) {
-                       errorHandler.warning('attribute "' + value + '" missed value!! "' + value + '" instead!!');
-                     }
+         function update() {
+           var baselayer = context.background().baseLayerSource();

 
 

-                     el.add(value, value, start);
-                   }
+           _selection.call(render, baselayer ? [baselayer] : [], 'base-layer-attribution');

 
 

-                   break;
+           var z = context.map().zoom();
+           var overlays = context.background().overlayLayerSources() || [];

 
 

-                 case S_EQ:
-                   throw new Error('attribute value missed!!');
-               } //                    console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
+           _selection.call(render, overlays.filter(function (s) {
+             return s.validZoom(z);
+           }), 'overlay-layer-attribution');
+         }

 
 

+         return function (selection) {
+           _selection = selection;
+           context.background().on('change.attribution', update);
+           context.map().on('move.attribution', throttle(update, 400, {
+             leading: false
+           }));
+           update();
+         };
+       }

 
 

-               return p;
+       function uiContributors(context) {
+         var osm = context.connection(),
+             debouncedUpdate = debounce(function () {
+           update();
+         }, 1000),
+             limit = 4,
+             hidden = false,
+             wrap = select(null);

 
 

-             /*xml space '\x20' | #x9 | #xD | #xA; */
+         function update() {
+           if (!osm) return;
+           var users = {},
+               entities = context.history().intersects(context.map().extent());
+           entities.forEach(function (entity) {
+             if (entity && entity.user) users[entity.user] = true;
+           });
+           var u = Object.keys(users),
+               subset = u.slice(0, u.length > limit ? limit - 1 : limit);
+           wrap.html('').call(svgIcon('#iD-icon-nearby', 'pre-text light'));
+           var userList = select(document.createElement('span'));
+           userList.selectAll().data(subset).enter().append('a').attr('class', 'user-link').attr('href', function (d) {
+             return osm.userURL(d);
+           }).attr('target', '_blank').html(String);

 
 

-             case "\x80":
-               c = ' ';
+           if (u.length > limit) {
+             var count = select(document.createElement('span'));
+             var othersNum = u.length - limit + 1;
+             count.append('a').attr('target', '_blank').attr('href', function () {
+               return osm.changesetsURL(context.map().center(), context.map().zoom());
+             }).html(othersNum);
+             wrap.append('span').html(_t.html('contributors.truncated_list', {
+               n: othersNum,
+               users: userList.html(),
+               count: count.html()
+             }));
+           } else {
+             wrap.append('span').html(_t.html('contributors.list', {
+               users: userList.html()
+             }));
+           }

 
 

-             default:
-               if (c <= ' ') {
-                 //space
-                 switch (s) {
-                   case S_TAG:
-                     el.setTagName(source.slice(start, p)); //tagName
+           if (!u.length) {
+             hidden = true;
+             wrap.transition().style('opacity', 0);
+           } else if (hidden) {
+             wrap.transition().style('opacity', 1);
+           }
+         }

 
 

-                     s = S_TAG_SPACE;
-                     break;
+         return function (selection) {
+           if (!osm) return;
+           wrap = selection;
+           update();
+           osm.on('loaded.contributors', debouncedUpdate);
+           context.map().on('move.contributors', debouncedUpdate);
+         };
+       }

 
 

-                   case S_ATTR:
-                     attrName = source.slice(start, p);
-                     s = S_ATTR_SPACE;
-                     break;
+       var _popoverID = 0;
+       function uiPopover(klass) {
+         var _id = _popoverID++;

 
 

-                   case S_ATTR_NOQUOT_VALUE:
-                     var value = source.slice(start, p).replace(/&#?\w+;/g, entityReplacer);
-                     errorHandler.warning('attribute "' + value + '" missed quot(")!!');
-                     el.add(attrName, value, start);
+         var _anchorSelection = select(null);

 
 

-                   case S_ATTR_END:
-                     s = S_TAG_SPACE;
-                     break;
-                   //case S_TAG_SPACE:
-                   //case S_EQ:
-                   //case S_ATTR_SPACE:
-                   //  void();break;
-                   //case S_TAG_CLOSE:
-                   //ignore warning
-                 }
-               } else {
-                 //not space
-                 //S_TAG,      S_ATTR, S_EQ,   S_ATTR_NOQUOT_VALUE
-                 //S_ATTR_SPACE,       S_ATTR_END,     S_TAG_SPACE, S_TAG_CLOSE
-                 switch (s) {
-                   //case S_TAG:void();break;
-                   //case S_ATTR:void();break;
-                   //case S_ATTR_NOQUOT_VALUE:void();break;
-                   case S_ATTR_SPACE:
-                     var tagName = el.tagName;
-
-                     if (currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !attrName.match(/^(?:disabled|checked|selected)$/i)) {
-                       errorHandler.warning('attribute "' + attrName + '" missed value!! "' + attrName + '" instead2!!');
-                     }
+         var popover = function popover(selection) {
+           _anchorSelection = selection;
+           selection.each(setup);
+         };

 
 

-                     el.add(attrName, attrName, start);
-                     start = p;
-                     s = S_ATTR;
-                     break;
+         var _animation = utilFunctor(false);

 
 

-                   case S_ATTR_END:
-                     errorHandler.warning('attribute space is required"' + attrName + '"!!');
+         var _placement = utilFunctor('top'); // top, bottom, left, right

 
 

-                   case S_TAG_SPACE:
-                     s = S_ATTR;
-                     start = p;
-                     break;

 
 

-                   case S_EQ:
-                     s = S_ATTR_NOQUOT_VALUE;
-                     start = p;
-                     break;
+         var _alignment = utilFunctor('center'); // leading, center, trailing

 
 

-                   case S_TAG_CLOSE:
-                     throw new Error("elements closed character '/' and '>' must be connected to");
-                 }
-               }

 
 

-           } //end outer switch
-           //console.log('p++',p)
+         var _scrollContainer = utilFunctor(select(null));

 
 

+         var _content;

 
 

-           p++;
-         }
-       }
-       /**
-        * @return true if has new namespace define
-        */
+         var _displayType = utilFunctor('');

 
 

+         var _hasArrow = utilFunctor(true); // use pointer events on supported platforms; fallback to mouse events

 
 

-       function appendElement(el, domBuilder, currentNSMap) {
-         var tagName = el.tagName;
-         var localNSMap = null; //var currentNSMap = parseStack[parseStack.length-1].currentNSMap;

 
 

-         var i = el.length;
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-         while (i--) {
-           var a = el[i];
-           var qName = a.qName;
-           var value = a.value;
-           var nsp = qName.indexOf(':');
-
-           if (nsp > 0) {
-             var prefix = a.prefix = qName.slice(0, nsp);
-             var localName = qName.slice(nsp + 1);
-             var nsPrefix = prefix === 'xmlns' && localName;
+         popover.displayType = function (val) {
+           if (arguments.length) {
+             _displayType = utilFunctor(val);
+             return popover;

            } else {
            } else {

-             localName = qName;
-             prefix = null;
-             nsPrefix = qName === 'xmlns' && '';
-           } //can not set prefix,because prefix !== ''
-
+             return _displayType;
+           }
+         };

 
 

-           a.localName = localName; //prefix == null for no ns prefix attribute 
+         popover.hasArrow = function (val) {
+           if (arguments.length) {
+             _hasArrow = utilFunctor(val);
+             return popover;
+           } else {
+             return _hasArrow;
+           }
+         };

 
 

-           if (nsPrefix !== false) {
-             //hack!!
-             if (localNSMap == null) {
-               localNSMap = {}; //console.log(currentNSMap,0)
+         popover.placement = function (val) {
+           if (arguments.length) {
+             _placement = utilFunctor(val);
+             return popover;
+           } else {
+             return _placement;
+           }
+         };

 
 

-               _copy(currentNSMap, currentNSMap = {}); //console.log(currentNSMap,1)
+         popover.alignment = function (val) {
+           if (arguments.length) {
+             _alignment = utilFunctor(val);
+             return popover;
+           } else {
+             return _alignment;
+           }
+         };

 
 

-             }
+         popover.scrollContainer = function (val) {
+           if (arguments.length) {
+             _scrollContainer = utilFunctor(val);
+             return popover;
+           } else {
+             return _scrollContainer;
+           }
+         };

 
 

-             currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
-             a.uri = 'http://www.w3.org/2000/xmlns/';
-             domBuilder.startPrefixMapping(nsPrefix, value);
+         popover.content = function (val) {
+           if (arguments.length) {
+             _content = val;
+             return popover;
+           } else {
+             return _content;

            }
            }

-         }
+         };

 
 

-         var i = el.length;
+         popover.isShown = function () {
+           var popoverSelection = _anchorSelection.select('.popover-' + _id);

 
 

-         while (i--) {
-           a = el[i];
-           var prefix = a.prefix;
+           return !popoverSelection.empty() && popoverSelection.classed('in');
+         };

 
 

-           if (prefix) {
-             //no prefix attribute has no namespace
-             if (prefix === 'xml') {
-               a.uri = 'http://www.w3.org/XML/1998/namespace';
-             }
+         popover.show = function () {
+           _anchorSelection.each(show);
+         };

 
 

-             if (prefix !== 'xmlns') {
-               a.uri = currentNSMap[prefix || '']; //{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
-             }
-           }
-         }
+         popover.updateContent = function () {
+           _anchorSelection.each(updateContent);
+         };

 
 

-         var nsp = tagName.indexOf(':');
+         popover.hide = function () {
+           _anchorSelection.each(hide);
+         };

 
 

-         if (nsp > 0) {
-           prefix = el.prefix = tagName.slice(0, nsp);
-           localName = el.localName = tagName.slice(nsp + 1);
-         } else {
-           prefix = null; //important!!
+         popover.toggle = function () {
+           _anchorSelection.each(toggle);
+         };
+
+         popover.destroy = function (selection, selector) {
+           // by default, just destroy the current popover
+           selector = selector || '.popover-' + _id;
+           selection.on(_pointerPrefix + 'enter.popover', null).on(_pointerPrefix + 'leave.popover', null).on(_pointerPrefix + 'up.popover', null).on(_pointerPrefix + 'down.popover', null).on('click.popover', null).attr('title', function () {
+             return this.getAttribute('data-original-title') || this.getAttribute('title');
+           }).attr('data-original-title', null).selectAll(selector).remove();
+         };

 
 

-           localName = el.localName = tagName;
-         } //no prefix element has default namespace
+         popover.destroyAny = function (selection) {
+           selection.call(popover.destroy, '.popover');
+         };

 
 

+         function setup() {
+           var anchor = select(this);

 
 

-         var ns = el.uri = currentNSMap[prefix || ''];
-         domBuilder.startElement(ns, localName, tagName, el); //endPrefixMapping and startPrefixMapping have not any help for dom builder
-         //localNSMap = null
+           var animate = _animation.apply(this, arguments);

 
 

-         if (el.closed) {
-           domBuilder.endElement(ns, localName, tagName);
+           var popoverSelection = anchor.selectAll('.popover-' + _id).data([0]);
+           var enter = popoverSelection.enter().append('div').attr('class', 'popover popover-' + _id + ' ' + (klass ? klass : '')).classed('arrowed', _hasArrow.apply(this, arguments));
+           enter.append('div').attr('class', 'popover-arrow');
+           enter.append('div').attr('class', 'popover-inner');
+           popoverSelection = enter.merge(popoverSelection);

 
 

-           if (localNSMap) {
-             for (prefix in localNSMap) {
-               domBuilder.endPrefixMapping(prefix);
-             }
+           if (animate) {
+             popoverSelection.classed('fade', true);

            }
            }

-         } else {
-           el.currentNSMap = currentNSMap;
-           el.localNSMap = localNSMap; //parseStack.push(el);

 
 

-           return true;
-         }
-       }
+           var display = _displayType.apply(this, arguments);

 
 

-       function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {
-         if (/^(?:script|textarea)$/i.test(tagName)) {
-           var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);
-           var text = source.substring(elStartEnd + 1, elEndStart);
+           if (display === 'hover') {
+             var _lastNonMouseEnterTime;

 
 

-           if (/[&<]/.test(text)) {
-             if (/^script$/i.test(tagName)) {
-               //if(!/\]\]>/.test(text)){
-               //lexHandler.startCDATA();
-               domBuilder.characters(text, 0, text.length); //lexHandler.endCDATA();
+             anchor.on(_pointerPrefix + 'enter.popover', function (d3_event) {
+               if (d3_event.pointerType) {
+                 if (d3_event.pointerType !== 'mouse') {
+                   _lastNonMouseEnterTime = d3_event.timeStamp; // only allow hover behavior for mouse input

 
 

-               return elEndStart; //}
-             } //}else{//text area
+                   return;
+                 } else if (_lastNonMouseEnterTime && d3_event.timeStamp - _lastNonMouseEnterTime < 1500) {
+                   // HACK: iOS 13.4 sends an erroneous `mouse` type pointerenter
+                   // event for non-mouse interactions right after sending
+                   // the correct type pointerenter event. Workaround by discarding
+                   // any mouse event that occurs immediately after a non-mouse event.
+                   return;
+                 }
+               } // don't show if buttons are pressed, e.g. during click and drag of map

 
 
 
 

-             text = text.replace(/&#?\w+;/g, entityReplacer);
-             domBuilder.characters(text, 0, text.length);
-             return elEndStart; //}
+               if (d3_event.buttons !== 0) return;
+               show.apply(this, arguments);
+             }).on(_pointerPrefix + 'leave.popover', function () {
+               hide.apply(this, arguments);
+             }) // show on focus too for better keyboard navigation support
+             .on('focus.popover', function () {
+               show.apply(this, arguments);
+             }).on('blur.popover', function () {
+               hide.apply(this, arguments);
+             });
+           } else if (display === 'clickFocus') {
+             anchor.on(_pointerPrefix + 'down.popover', function (d3_event) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+             }).on(_pointerPrefix + 'up.popover', function (d3_event) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+             }).on('click.popover', toggle);
+             popoverSelection // This attribute lets the popover take focus
+             .attr('tabindex', 0).on('blur.popover', function () {
+               anchor.each(function () {
+                 hide.apply(this, arguments);
+               });
+             });

            }
          }
 
            }
          }
 

-         return elStartEnd + 1;
-       }
-
-       function fixSelfClosed(source, elStartEnd, tagName, closeMap) {
-         //if(tagName in closeMap){
-         var pos = closeMap[tagName];
-
-         if (pos == null) {
-           //console.log(tagName)
-           pos = source.lastIndexOf('</' + tagName + '>');
+         function show() {
+           var anchor = select(this);
+           var popoverSelection = anchor.selectAll('.popover-' + _id);

 
 

-           if (pos < elStartEnd) {
-             //忘记闭合
-             pos = source.lastIndexOf('</' + tagName);
+           if (popoverSelection.empty()) {
+             // popover was removed somehow, put it back
+             anchor.call(popover.destroy);
+             anchor.each(setup);
+             popoverSelection = anchor.selectAll('.popover-' + _id);

            }
 
            }
 

-           closeMap[tagName] = pos;
-         }
+           popoverSelection.classed('in', true);

 
 

-         return pos < elStartEnd; //} 
-       }
+           var displayType = _displayType.apply(this, arguments);
+
+           if (displayType === 'clickFocus') {
+             anchor.classed('active', true);
+             popoverSelection.node().focus();
+           }

 
 

-       function _copy(source, target) {
-         for (var n in source) {
-           target[n] = source[n];
+           anchor.each(updateContent);

          }
          }

-       }

 
 

-       function parseDCC(source, start, domBuilder, errorHandler) {
-         //sure start with '<!'
-         var next = source.charAt(start + 2);
+         function updateContent() {
+           var anchor = select(this);

 
 

-         switch (next) {
-           case '-':
-             if (source.charAt(start + 3) === '-') {
-               var end = source.indexOf('-->', start + 4); //append comment source.substring(4,end)//<!--
+           if (_content) {
+             anchor.selectAll('.popover-' + _id + ' > .popover-inner').call(_content.apply(this, arguments));
+           }

 
 

-               if (end > start) {
-                 domBuilder.comment(source, start + 4, end - start - 4);
-                 return end + 3;
-               } else {
-                 errorHandler.error("Unclosed comment");
-                 return -1;
-               }
-             } else {
-               //error
-               return -1;
-             }
+           updatePosition.apply(this, arguments); // hack: update multiple times to fix instances where the absolute offset is
+           // set before the dynamic popover size is calculated by the browser

 
 

-           default:
-             if (source.substr(start + 3, 6) == 'CDATA[') {
-               var end = source.indexOf(']]>', start + 9);
-               domBuilder.startCDATA();
-               domBuilder.characters(source, start + 9, end - start - 9);
-               domBuilder.endCDATA();
-               return end + 3;
-             } //<!DOCTYPE
-             //startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId) 
+           updatePosition.apply(this, arguments);
+           updatePosition.apply(this, arguments);
+         }

 
 

+         function updatePosition() {
+           var anchor = select(this);
+           var popoverSelection = anchor.selectAll('.popover-' + _id);

 
 

-             var matchs = split$1(source, start);
-             var len = matchs.length;
+           var scrollContainer = _scrollContainer && _scrollContainer.apply(this, arguments);

 
 

-             if (len > 1 && /!doctype/i.test(matchs[0][0])) {
-               var name = matchs[1][0];
-               var pubid = len > 3 && /^public$/i.test(matchs[2][0]) && matchs[3][0];
-               var sysid = len > 4 && matchs[4][0];
-               var lastMatch = matchs[len - 1];
-               domBuilder.startDTD(name, pubid && pubid.replace(/^(['"])(.*?)\1$/, '$2'), sysid && sysid.replace(/^(['"])(.*?)\1$/, '$2'));
-               domBuilder.endDTD();
-               return lastMatch.index + lastMatch[0].length;
-             }
+           var scrollNode = scrollContainer && !scrollContainer.empty() && scrollContainer.node();
+           var scrollLeft = scrollNode ? scrollNode.scrollLeft : 0;
+           var scrollTop = scrollNode ? scrollNode.scrollTop : 0;

 
 

-         }
+           var placement = _placement.apply(this, arguments);

 
 

-         return -1;
-       }
+           popoverSelection.classed('left', false).classed('right', false).classed('top', false).classed('bottom', false).classed(placement, true);

 
 

-       function parseInstruction(source, start, domBuilder) {
-         var end = source.indexOf('?>', start);
+           var alignment = _alignment.apply(this, arguments);

 
 

-         if (end) {
-           var match = source.substring(start, end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
+           var alignFactor = 0.5;

 
 

-           if (match) {
-             var len = match[0].length;
-             domBuilder.processingInstruction(match[1], match[2]);
-             return end + 2;
-           } else {
-             //error
-             return -1;
+           if (alignment === 'leading') {
+             alignFactor = 0;
+           } else if (alignment === 'trailing') {
+             alignFactor = 1;

            }
            }

-         }

 
 

-         return -1;
-       }
-       /**
-        * @param source
-        */
+           var anchorFrame = getFrame(anchor.node());
+           var popoverFrame = getFrame(popoverSelection.node());
+           var position;

 
 

+           switch (placement) {
+             case 'top':
+               position = {
+                 x: anchorFrame.x + (anchorFrame.w - popoverFrame.w) * alignFactor,
+                 y: anchorFrame.y - popoverFrame.h
+               };
+               break;

 
 

-       function ElementAttributes(source) {}
+             case 'bottom':
+               position = {
+                 x: anchorFrame.x + (anchorFrame.w - popoverFrame.w) * alignFactor,
+                 y: anchorFrame.y + anchorFrame.h
+               };
+               break;

 
 

-       ElementAttributes.prototype = {
-         setTagName: function setTagName(tagName) {
-           if (!tagNamePattern.test(tagName)) {
-             throw new Error('invalid tagName:' + tagName);
-           }
+             case 'left':
+               position = {
+                 x: anchorFrame.x - popoverFrame.w,
+                 y: anchorFrame.y + (anchorFrame.h - popoverFrame.h) * alignFactor
+               };
+               break;

 
 

-           this.tagName = tagName;
-         },
-         add: function add(qName, value, offset) {
-           if (!tagNamePattern.test(qName)) {
-             throw new Error('invalid attribute:' + qName);
+             case 'right':
+               position = {
+                 x: anchorFrame.x + anchorFrame.w,
+                 y: anchorFrame.y + (anchorFrame.h - popoverFrame.h) * alignFactor
+               };
+               break;

            }
 
            }
 

-           this[this.length++] = {
-             qName: qName,
-             value: value,
-             offset: offset
-           };
-         },
-         length: 0,
-         getLocalName: function getLocalName(i) {
-           return this[i].localName;
-         },
-         getLocator: function getLocator(i) {
-           return this[i].locator;
-         },
-         getQName: function getQName(i) {
-           return this[i].qName;
-         },
-         getURI: function getURI(i) {
-           return this[i].uri;
-         },
-         getValue: function getValue(i) {
-           return this[i].value;
-         } //  ,getIndex:function(uri, localName)){
-         //            if(localName){
-         //                    
-         //            }else{
-         //                    var qName = uri
-         //            }
-         //    },
-         //    getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
-         //    getType:function(uri,localName){}
-         //    getType:function(i){},
+           if (position) {
+             if (scrollNode && (placement === 'top' || placement === 'bottom')) {
+               var initialPosX = position.x;

 
 

-       };
+               if (position.x + popoverFrame.w > scrollNode.offsetWidth - 10) {
+                 position.x = scrollNode.offsetWidth - 10 - popoverFrame.w;
+               } else if (position.x < 10) {
+                 position.x = 10;
+               }

 
 

-       function _set_proto_(thiz, parent) {
-         thiz.__proto__ = parent;
-         return thiz;
-       }
+               var arrow = anchor.selectAll('.popover-' + _id + ' > .popover-arrow'); // keep the arrow centered on the button, or as close as possible

 
 

-       if (!(_set_proto_({}, _set_proto_.prototype) instanceof _set_proto_)) {
-         _set_proto_ = function _set_proto_(thiz, parent) {
-           function p() {}
-           p.prototype = parent;
-           p = new p();
+               var arrowPosX = Math.min(Math.max(popoverFrame.w / 2 - (position.x - initialPosX), 10), popoverFrame.w - 10);
+               arrow.style('left', ~~arrowPosX + 'px');
+             }

 
 

-           for (parent in thiz) {
-             p[parent] = thiz[parent];
+             popoverSelection.style('left', ~~position.x + 'px').style('top', ~~position.y + 'px');
+           } else {
+             popoverSelection.style('left', null).style('top', null);

            }
 
            }
 

-           return p;
-         };
-       }
-
-       function split$1(source, start) {
-         var match;
-         var buf = [];
-         var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
-         reg.lastIndex = start;
-         reg.exec(source); //skip <
+           function getFrame(node) {
+             var positionStyle = select(node).style('position');

 
 

-         while (match = reg.exec(source)) {
-           buf.push(match);
-           if (match[1]) return buf;
+             if (positionStyle === 'absolute' || positionStyle === 'static') {
+               return {
+                 x: node.offsetLeft - scrollLeft,
+                 y: node.offsetTop - scrollTop,
+                 w: node.offsetWidth,
+                 h: node.offsetHeight
+               };
+             } else {
+               return {
+                 x: 0,
+                 y: 0,
+                 w: node.offsetWidth,
+                 h: node.offsetHeight
+               };
+             }
+           }

          }
          }

-       }
-
-       var XMLReader_1 = XMLReader;
-       var sax = {
-         XMLReader: XMLReader_1
-       };

 
 

-       /*
-        * DOM Level 2
-        * Object DOMException
-        * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
-        * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
-        */
-       function copy$1(src, dest) {
-         for (var p in src) {
-           dest[p] = src[p];
-         }
-       }
-       /**
-       ^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
-       ^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
-        */
+         function hide() {
+           var anchor = select(this);

 
 

+           if (_displayType.apply(this, arguments) === 'clickFocus') {
+             anchor.classed('active', false);
+           }

 
 

-       function _extends(Class, Super) {
-         var pt = Class.prototype;
+           anchor.selectAll('.popover-' + _id).classed('in', false);
+         }

 
 

-         if (Object.create) {
-           var ppt = Object.create(Super.prototype);
-           pt.__proto__ = ppt;
-         }
-
-         if (!(pt instanceof Super)) {
-           var t = function t() {};
-           t.prototype = Super.prototype;
-           t = new t();
-           copy$1(pt, t);
-           Class.prototype = pt = t;
-         }
-
-         if (pt.constructor != Class) {
-           if (typeof Class != 'function') {
-             console.error("unknow Class:" + Class);
-           }
-
-           pt.constructor = Class;
-         }
-       }
-
-       var htmlns = 'http://www.w3.org/1999/xhtml'; // Node Types
-
-       var NodeType = {};
-       var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;
-       var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;
-       var TEXT_NODE = NodeType.TEXT_NODE = 3;
-       var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;
-       var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;
-       var ENTITY_NODE = NodeType.ENTITY_NODE = 6;
-       var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
-       var COMMENT_NODE = NodeType.COMMENT_NODE = 8;
-       var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;
-       var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;
-       var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;
-       var NOTATION_NODE = NodeType.NOTATION_NODE = 12; // ExceptionCode
-
-       var ExceptionCode = {};
-       var ExceptionMessage = {};
-       var INDEX_SIZE_ERR = ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = "Index size error", 1);
-       var DOMSTRING_SIZE_ERR = ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = "DOMString size error", 2);
-       var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = "Hierarchy request error", 3);
-       var WRONG_DOCUMENT_ERR = ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = "Wrong document", 4);
-       var INVALID_CHARACTER_ERR = ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = "Invalid character", 5);
-       var NO_DATA_ALLOWED_ERR = ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = "No data allowed", 6);
-       var NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = "No modification allowed", 7);
-       var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = "Not found", 8);
-       var NOT_SUPPORTED_ERR = ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = "Not supported", 9);
-       var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = "Attribute in use", 10); //level2
-
-       var INVALID_STATE_ERR = ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = "Invalid state", 11);
-       var SYNTAX_ERR = ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = "Syntax error", 12);
-       var INVALID_MODIFICATION_ERR = ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = "Invalid modification", 13);
-       var NAMESPACE_ERR = ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = "Invalid namespace", 14);
-       var INVALID_ACCESS_ERR = ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = "Invalid access", 15);
-
-       function DOMException$2(code, message) {
-         if (message instanceof Error) {
-           var error = message;
-         } else {
-           error = this;
-           Error.call(this, ExceptionMessage[code]);
-           this.message = ExceptionMessage[code];
-           if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException$2);
+         function toggle() {
+           if (select(this).select('.popover-' + _id).classed('in')) {
+             hide.apply(this, arguments);
+           } else {
+             show.apply(this, arguments);
+           }

          }
 
          }
 

-         error.code = code;
-         if (message) this.message = this.message + ": " + message;
-         return error;
+         return popover;

        }
        }

-       DOMException$2.prototype = Error.prototype;
-       copy$1(ExceptionCode, DOMException$2);
-       /**
-        * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
-        * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
-        * The items in the NodeList are accessible via an integral index, starting from 0.
-        */

 
 

-       function NodeList() {}
-       NodeList.prototype = {
-         /**
-          * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
-          * @standard level1
-          */
-         length: 0,
+       function uiTooltip(klass) {
+         var tooltip = uiPopover((klass || '') + ' tooltip').displayType('hover');

 
 

-         /**
-          * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
-          * @standard level1
-          * @param index  unsigned long 
-          *   Index into the collection.
-          * @return Node
-          *    The node at the indexth position in the NodeList, or null if that is not a valid index. 
-          */
-         item: function item(index) {
-           return this[index] || null;
-         },
-         toString: function toString(isHTML, nodeFilter) {
-           for (var buf = [], i = 0; i < this.length; i++) {
-             serializeToString(this[i], buf, isHTML, nodeFilter);
+         var _title = function _title() {
+           var title = this.getAttribute('data-original-title');
+
+           if (title) {
+             return title;
+           } else {
+             title = this.getAttribute('title');
+             this.removeAttribute('title');
+             this.setAttribute('data-original-title', title);

            }
 
            }
 

-           return buf.join('');
-         }
-       };
+           return title;
+         };

 
 

-       function LiveNodeList(node, refresh) {
-         this._node = node;
-         this._refresh = refresh;
+         var _heading = utilFunctor(null);

 
 

-         _updateLiveList(this);
-       }
+         var _keys = utilFunctor(null);

 
 

-       function _updateLiveList(list) {
-         var inc = list._node._inc || list._node.ownerDocument._inc;
+         tooltip.title = function (val) {
+           if (!arguments.length) return _title;
+           _title = utilFunctor(val);
+           return tooltip;
+         };

 
 

-         if (list._inc != inc) {
-           var ls = list._refresh(list._node); //console.log(ls.length)
+         tooltip.heading = function (val) {
+           if (!arguments.length) return _heading;
+           _heading = utilFunctor(val);
+           return tooltip;
+         };

 
 

+         tooltip.keys = function (val) {
+           if (!arguments.length) return _keys;
+           _keys = utilFunctor(val);
+           return tooltip;
+         };

 
 

-           __set__(list, 'length', ls.length);
+         tooltip.content(function () {
+           var heading = _heading.apply(this, arguments);

 
 

-           copy$1(ls, list);
-           list._inc = inc;
-         }
-       }
+           var text = _title.apply(this, arguments);

 
 

-       LiveNodeList.prototype.item = function (i) {
-         _updateLiveList(this);
+           var keys = _keys.apply(this, arguments);

 
 

-         return this[i];
-       };
+           return function (selection) {
+             var headingSelect = selection.selectAll('.tooltip-heading').data(heading ? [heading] : []);
+             headingSelect.exit().remove();
+             headingSelect.enter().append('div').attr('class', 'tooltip-heading').merge(headingSelect).html(heading);
+             var textSelect = selection.selectAll('.tooltip-text').data(text ? [text] : []);
+             textSelect.exit().remove();
+             textSelect.enter().append('div').attr('class', 'tooltip-text').merge(textSelect).html(text);
+             var keyhintWrap = selection.selectAll('.keyhint-wrap').data(keys && keys.length ? [0] : []);
+             keyhintWrap.exit().remove();
+             var keyhintWrapEnter = keyhintWrap.enter().append('div').attr('class', 'keyhint-wrap');
+             keyhintWrapEnter.append('span').html(_t.html('tooltip_keyhint'));
+             keyhintWrap = keyhintWrapEnter.merge(keyhintWrap);
+             keyhintWrap.selectAll('kbd.shortcut').data(keys && keys.length ? keys : []).enter().append('kbd').attr('class', 'shortcut').html(function (d) {
+               return d;
+             });
+           };
+         });
+         return tooltip;
+       }

 
 

-       _extends(LiveNodeList, NodeList);
-       /**
-        * 
-        * Objects implementing the NamedNodeMap interface are used to represent collections of nodes that can be accessed by name. Note that NamedNodeMap does not inherit from NodeList; NamedNodeMaps are not maintained in any particular order. Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index, but this is simply to allow convenient enumeration of the contents of a NamedNodeMap, and does not imply that the DOM specifies an order to these Nodes.
-        * NamedNodeMap objects in the DOM are live.
-        * used for attributes or DocumentType entities 
-        */
+       function uiEditMenu(context) {
+         var dispatch = dispatch$8('toggled');

 
 

+         var _menu = select(null);

 
 

-       function NamedNodeMap() {}
+         var _operations = []; // the position the menu should be displayed relative to

 
 

-       function _findNodeIndex(list, node) {
-         var i = list.length;
+         var _anchorLoc = [0, 0];
+         var _anchorLocLonLat = [0, 0]; // a string indicating how the menu was opened

 
 

-         while (i--) {
-           if (list[i] === node) {
-             return i;
-           }
-         }
-       }
+         var _triggerType = '';
+         var _vpTopMargin = 85; // viewport top margin

 
 

-       function _addNamedNode(el, list, newAttr, oldAttr) {
-         if (oldAttr) {
-           list[_findNodeIndex(list, oldAttr)] = newAttr;
-         } else {
-           list[list.length++] = newAttr;
-         }
+         var _vpBottomMargin = 45; // viewport bottom margin

 
 

-         if (el) {
-           newAttr.ownerElement = el;
-           var doc = el.ownerDocument;
+         var _vpSideMargin = 35; // viewport side margin

 
 

-           if (doc) {
-             oldAttr && _onRemoveAttribute(doc, el, oldAttr);
+         var _menuTop = false;

 
 

-             _onAddAttribute(doc, el, newAttr);
-           }
-         }
-       }
+         var _menuHeight;

 
 

-       function _removeNamedNode(el, list, attr) {
-         //console.log('remove attr:'+attr)
-         var i = _findNodeIndex(list, attr);
+         var _menuWidth; // hardcode these values to make menu positioning easier

 
 

-         if (i >= 0) {
-           var lastIndex = list.length - 1;

 
 

-           while (i < lastIndex) {
-             list[i] = list[++i];
-           }
+         var _verticalPadding = 4; // see also `.edit-menu .tooltip` CSS; include margin

 
 

-           list.length = lastIndex;
+         var _tooltipWidth = 210; // offset the menu slightly from the target location

 
 

-           if (el) {
-             var doc = el.ownerDocument;
+         var _menuSideMargin = 10;
+         var _tooltips = [];

 
 

-             if (doc) {
-               _onRemoveAttribute(doc, el, attr);
+         var editMenu = function editMenu(selection) {
+           var isTouchMenu = _triggerType.includes('touch') || _triggerType.includes('pen');

 
 

-               attr.ownerElement = null;
-             }
-           }
-         } else {
-           throw DOMException$2(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));
-         }
-       }
+           var ops = _operations.filter(function (op) {
+             return !isTouchMenu || !op.mouseOnly;
+           });

 
 

-       NamedNodeMap.prototype = {
-         length: 0,
-         item: NodeList.prototype.item,
-         getNamedItem: function getNamedItem(key) {
-           //          if(key.indexOf(':')>0 || key == 'xmlns'){
-           //                  return null;
-           //          }
-           //console.log()
-           var i = this.length;
+           if (!ops.length) return;
+           _tooltips = []; // Position the menu above the anchor for stylus and finger input
+           // since the mapper's hand likely obscures the screen below the anchor

 
 

-           while (i--) {
-             var attr = this[i]; //console.log(attr.nodeName,key)
+           _menuTop = isTouchMenu; // Show labels for touch input since there aren't hover tooltips

 
 

-             if (attr.nodeName == key) {
-               return attr;
-             }
-           }
-         },
-         setNamedItem: function setNamedItem(attr) {
-           var el = attr.ownerElement;
+           var showLabels = isTouchMenu;
+           var buttonHeight = showLabels ? 32 : 34;

 
 

-           if (el && el != this._ownerElement) {
-             throw new DOMException$2(INUSE_ATTRIBUTE_ERR);
+           if (showLabels) {
+             // Get a general idea of the width based on the length of the label
+             _menuWidth = 52 + Math.min(120, 6 * Math.max.apply(Math, ops.map(function (op) {
+               return op.title.length;
+             })));
+           } else {
+             _menuWidth = 44;

            }
 
            }
 

-           var oldAttr = this.getNamedItem(attr.nodeName);
-
-           _addNamedNode(this._ownerElement, this, attr, oldAttr);
+           _menuHeight = _verticalPadding * 2 + ops.length * buttonHeight;
+           _menu = selection.append('div').attr('class', 'edit-menu').classed('touch-menu', isTouchMenu).style('padding', _verticalPadding + 'px 0');

 
 

-           return oldAttr;
-         },
+           var buttons = _menu.selectAll('.edit-menu-item').data(ops); // enter

 
 

-         /* returns Node */
-         setNamedItemNS: function setNamedItemNS(attr) {
-           // raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
-           var el = attr.ownerElement,
-               oldAttr;

 
 

-           if (el && el != this._ownerElement) {
-             throw new DOMException$2(INUSE_ATTRIBUTE_ERR);
-           }
+           var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
+             return 'edit-menu-item edit-menu-item-' + d.id;
+           }).style('height', buttonHeight + 'px').on('click', click) // don't listen for `mouseup` because we only care about non-mouse pointer types
+           .on('pointerup', pointerup).on('pointerdown mousedown', function pointerdown(d3_event) {
+             // don't let button presses also act as map input - #1869
+             d3_event.stopPropagation();
+           }).on('mouseenter.highlight', function (d3_event, d) {
+             if (!d.relatedEntityIds || select(this).classed('disabled')) return;
+             utilHighlightEntities(d.relatedEntityIds(), true, context);
+           }).on('mouseleave.highlight', function (d3_event, d) {
+             if (!d.relatedEntityIds) return;
+             utilHighlightEntities(d.relatedEntityIds(), false, context);
+           });
+           buttonsEnter.each(function (d) {
+             var tooltip = uiTooltip().heading(d.title).title(d.tooltip()).keys([d.keys[0]]);

 
 

-           oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);
+             _tooltips.push(tooltip);

 
 

-           _addNamedNode(this._ownerElement, this, attr, oldAttr);
+             select(this).call(tooltip).append('div').attr('class', 'icon-wrap').call(svgIcon('#iD-operation-' + d.id, 'operation'));
+           });

 
 

-           return oldAttr;
-         },
+           if (showLabels) {
+             buttonsEnter.append('span').attr('class', 'label').html(function (d) {
+               return d.title;
+             });
+           } // update

 
 

-         /* returns Node */
-         removeNamedItem: function removeNamedItem(key) {
-           var attr = this.getNamedItem(key);

 
 

-           _removeNamedNode(this._ownerElement, this, attr);
+           buttonsEnter.merge(buttons).classed('disabled', function (d) {
+             return d.disabled();
+           });
+           updatePosition();
+           var initialScale = context.projection.scale();
+           context.map().on('move.edit-menu', function () {
+             if (initialScale !== context.projection.scale()) {
+               editMenu.close();
+             }
+           }).on('drawn.edit-menu', function (info) {
+             if (info.full) updatePosition();
+           });
+           var lastPointerUpType; // `pointerup` is always called before `click`

 
 

-           return attr;
-         },
-         // raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
-         //for level2
-         removeNamedItemNS: function removeNamedItemNS(namespaceURI, localName) {
-           var attr = this.getNamedItemNS(namespaceURI, localName);
+           function pointerup(d3_event) {
+             lastPointerUpType = d3_event.pointerType;
+           }

 
 

-           _removeNamedNode(this._ownerElement, this, attr);
+           function click(d3_event, operation) {
+             d3_event.stopPropagation();

 
 

-           return attr;
-         },
-         getNamedItemNS: function getNamedItemNS(namespaceURI, localName) {
-           var i = this.length;
+             if (operation.relatedEntityIds) {
+               utilHighlightEntities(operation.relatedEntityIds(), false, context);
+             }

 
 

-           while (i--) {
-             var node = this[i];
+             if (operation.disabled()) {
+               if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
+                 // there are no tooltips for touch interactions so flash feedback instead
+                 context.ui().flash.duration(4000).iconName('#iD-operation-' + operation.id).iconClass('operation disabled').label(operation.tooltip)();
+               }
+             } else {
+               if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
+                 context.ui().flash.duration(2000).iconName('#iD-operation-' + operation.id).iconClass('operation').label(operation.annotation() || operation.title)();
+               }

 
 

-             if (node.localName == localName && node.namespaceURI == namespaceURI) {
-               return node;
+               operation();
+               editMenu.close();

              }
              }

+
+             lastPointerUpType = null;

            }
 
            }
 

-           return null;
-         }
-       };
-       /**
-        * @see http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490
-        */
+           dispatch.call('toggled', this, true);
+         };

 
 

-       function DOMImplementation(
-       /* Object */
-       features) {
-         this._features = {};
+         function updatePosition() {
+           if (!_menu || _menu.empty()) return;
+           var anchorLoc = context.projection(_anchorLocLonLat);
+           var viewport = context.surfaceRect();

 
 

-         if (features) {
-           for (var feature in features) {
-             this._features = features[feature];
+           if (anchorLoc[0] < 0 || anchorLoc[0] > viewport.width || anchorLoc[1] < 0 || anchorLoc[1] > viewport.height) {
+             // close the menu if it's gone offscreen
+             editMenu.close();
+             return;

            }
            }

-         }
-       }
-       DOMImplementation.prototype = {
-         hasFeature: function hasFeature(
-         /* string */
-         feature,
-         /* string */
-         version) {
-           var versions = this._features[feature.toLowerCase()];

 
 

-           if (versions && (!version || version in versions)) {
-             return true;
+           var menuLeft = displayOnLeft(viewport);
+           var offset = [0, 0];
+           offset[0] = menuLeft ? -1 * (_menuSideMargin + _menuWidth) : _menuSideMargin;
+
+           if (_menuTop) {
+             if (anchorLoc[1] - _menuHeight < _vpTopMargin) {
+               // menu is near top viewport edge, shift downward
+               offset[1] = -anchorLoc[1] + _vpTopMargin;
+             } else {
+               offset[1] = -_menuHeight;
+             }

            } else {
            } else {

-             return false;
+             if (anchorLoc[1] + _menuHeight > viewport.height - _vpBottomMargin) {
+               // menu is near bottom viewport edge, shift upwards
+               offset[1] = -anchorLoc[1] - _menuHeight + viewport.height - _vpBottomMargin;
+             } else {
+               offset[1] = 0;
+             }

            }
            }

-         },
-         // Introduced in DOM Level 2:
-         createDocument: function createDocument(namespaceURI, qualifiedName, doctype) {
-           // raises:INVALID_CHARACTER_ERR,NAMESPACE_ERR,WRONG_DOCUMENT_ERR
-           var doc = new Document();
-           doc.implementation = this;
-           doc.childNodes = new NodeList();
-           doc.doctype = doctype;

 
 

-           if (doctype) {
-             doc.appendChild(doctype);
-           }
+           var origin = geoVecAdd(anchorLoc, offset);

 
 

-           if (qualifiedName) {
-             var root = doc.createElementNS(namespaceURI, qualifiedName);
-             doc.appendChild(root);
-           }
+           _menu.style('left', origin[0] + 'px').style('top', origin[1] + 'px');

 
 

-           return doc;
-         },
-         // Introduced in DOM Level 2:
-         createDocumentType: function createDocumentType(qualifiedName, publicId, systemId) {
-           // raises:INVALID_CHARACTER_ERR,NAMESPACE_ERR
-           var node = new DocumentType();
-           node.name = qualifiedName;
-           node.nodeName = qualifiedName;
-           node.publicId = publicId;
-           node.systemId = systemId; // Introduced in DOM Level 2:
-           //readonly attribute DOMString        internalSubset;
-           //TODO:..
-           //  readonly attribute NamedNodeMap     entities;
-           //  readonly attribute NamedNodeMap     notations;
+           var tooltipSide = tooltipPosition(viewport, menuLeft);
+
+           _tooltips.forEach(function (tooltip) {
+             tooltip.placement(tooltipSide);
+           });
+
+           function displayOnLeft(viewport) {
+             if (_mainLocalizer.textDirection() === 'ltr') {
+               if (anchorLoc[0] + _menuSideMargin + _menuWidth > viewport.width - _vpSideMargin) {
+                 // right menu would be too close to the right viewport edge, go left
+                 return true;
+               } // prefer right menu

 
 

-           return node;
-         }
-       };
-       /**
-        * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
-        */

 
 

-       function Node() {}
-       Node.prototype = {
-         firstChild: null,
-         lastChild: null,
-         previousSibling: null,
-         nextSibling: null,
-         attributes: null,
-         parentNode: null,
-         childNodes: null,
-         ownerDocument: null,
-         nodeValue: null,
-         namespaceURI: null,
-         prefix: null,
-         localName: null,
-         // Modified in DOM Level 2:
-         insertBefore: function insertBefore(newChild, refChild) {
-           //raises 
-           return _insertBefore(this, newChild, refChild);
-         },
-         replaceChild: function replaceChild(newChild, oldChild) {
-           //raises 
-           this.insertBefore(newChild, oldChild);
-
-           if (oldChild) {
-             this.removeChild(oldChild);
-           }
-         },
-         removeChild: function removeChild(oldChild) {
-           return _removeChild(this, oldChild);
-         },
-         appendChild: function appendChild(newChild) {
-           return this.insertBefore(newChild, null);
-         },
-         hasChildNodes: function hasChildNodes() {
-           return this.firstChild != null;
-         },
-         cloneNode: function cloneNode(deep) {
-           return _cloneNode(this.ownerDocument || this, this, deep);
-         },
-         // Modified in DOM Level 2:
-         normalize: function normalize() {
-           var child = this.firstChild;
-
-           while (child) {
-             var next = child.nextSibling;
-
-             if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {
-               this.removeChild(next);
-               child.appendData(next.data);
+               return false;

              } else {
              } else {

-               child.normalize();
-               child = next;
-             }
-           }
-         },
-         // Introduced in DOM Level 2:
-         isSupported: function isSupported(feature, version) {
-           return this.ownerDocument.implementation.hasFeature(feature, version);
-         },
-         // Introduced in DOM Level 2:
-         hasAttributes: function hasAttributes() {
-           return this.attributes.length > 0;
-         },
-         lookupPrefix: function lookupPrefix(namespaceURI) {
-           var el = this;
+               // rtl
+               if (anchorLoc[0] - _menuSideMargin - _menuWidth < _vpSideMargin) {
+                 // left menu would be too close to the left viewport edge, go right
+                 return false;
+               } // prefer left menu

 
 

-           while (el) {
-             var map = el._nsMap; //console.dir(map)

 
 

-             if (map) {
-               for (var n in map) {
-                 if (map[n] == namespaceURI) {
-                   return n;
-                 }
-               }
+               return true;

              }
              }

-
-             el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;

            }
 
            }
 

-           return null;
-         },
-         // Introduced in DOM Level 3:
-         lookupNamespaceURI: function lookupNamespaceURI(prefix) {
-           var el = this;
-
-           while (el) {
-             var map = el._nsMap; //console.dir(map)
-
-             if (map) {
-               if (prefix in map) {
-                 return map[prefix];
+           function tooltipPosition(viewport, menuLeft) {
+             if (_mainLocalizer.textDirection() === 'ltr') {
+               if (menuLeft) {
+                 // if there's not room for a right-side menu then there definitely
+                 // isn't room for right-side tooltips
+                 return 'left';

                }
                }

-             }

 
 

-             el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
-           }
+               if (anchorLoc[0] + _menuSideMargin + _menuWidth + _tooltipWidth > viewport.width - _vpSideMargin) {
+                 // right tooltips would be too close to the right viewport edge, go left
+                 return 'left';
+               } // prefer right tooltips

 
 

-           return null;
-         },
-         // Introduced in DOM Level 3:
-         isDefaultNamespace: function isDefaultNamespace(namespaceURI) {
-           var prefix = this.lookupPrefix(namespaceURI);
-           return prefix == null;
-         }
-       };

 
 

-       function _xmlEncoder(c) {
-         return c == '<' && '&lt;' || c == '>' && '&gt;' || c == '&' && '&amp;' || c == '"' && '&quot;' || '&#' + c.charCodeAt() + ';';
-       }
+               return 'right';
+             } else {
+               // rtl
+               if (!menuLeft) {
+                 return 'right';
+               }

 
 

-       copy$1(NodeType, Node);
-       copy$1(NodeType, Node.prototype);
-       /**
-        * @param callback return true for continue,false for break
-        * @return boolean true: break visit;
-        */
+               if (anchorLoc[0] - _menuSideMargin - _menuWidth - _tooltipWidth < _vpSideMargin) {
+                 // left tooltips would be too close to the left viewport edge, go right
+                 return 'right';
+               } // prefer left tooltips

 
 

-       function _visitNode(node, callback) {
-         if (callback(node)) {
-           return true;
-         }

 
 

-         if (node = node.firstChild) {
-           do {
-             if (_visitNode(node, callback)) {
-               return true;
+               return 'left';

              }
              }

-           } while (node = node.nextSibling);
+           }

          }
          }

-       }
-
-       function Document() {}

 
 

-       function _onAddAttribute(doc, el, newAttr) {
-         doc && doc._inc++;
-         var ns = newAttr.namespaceURI;
+         editMenu.close = function () {
+           context.map().on('move.edit-menu', null).on('drawn.edit-menu', null);

 
 

-         if (ns == 'http://www.w3.org/2000/xmlns/') {
-           //update namespace
-           el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;
-         }
-       }
+           _menu.remove();

 
 

-       function _onRemoveAttribute(doc, el, newAttr, remove) {
-         doc && doc._inc++;
-         var ns = newAttr.namespaceURI;
+           _tooltips = [];
+           dispatch.call('toggled', this, false);
+         };

 
 

-         if (ns == 'http://www.w3.org/2000/xmlns/') {
-           //update namespace
-           delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];
-         }
-       }
+         editMenu.anchorLoc = function (val) {
+           if (!arguments.length) return _anchorLoc;
+           _anchorLoc = val;
+           _anchorLocLonLat = context.projection.invert(_anchorLoc);
+           return editMenu;
+         };

 
 

-       function _onUpdateChild(doc, el, newChild) {
-         if (doc && doc._inc) {
-           doc._inc++; //update childNodes
+         editMenu.triggerType = function (val) {
+           if (!arguments.length) return _triggerType;
+           _triggerType = val;
+           return editMenu;
+         };

 
 

-           var cs = el.childNodes;
+         editMenu.operations = function (val) {
+           if (!arguments.length) return _operations;
+           _operations = val;
+           return editMenu;
+         };

 
 

-           if (newChild) {
-             cs[cs.length++] = newChild;
-           } else {
-             //console.log(1)
-             var child = el.firstChild;
-             var i = 0;
+         return utilRebind(editMenu, dispatch, 'on');
+       }

 
 

-             while (child) {
-               cs[i++] = child;
-               child = child.nextSibling;
+       function uiFeatureInfo(context) {
+         function update(selection) {
+           var features = context.features();
+           var stats = features.stats();
+           var count = 0;
+           var hiddenList = features.hidden().map(function (k) {
+             if (stats[k]) {
+               count += stats[k];
+               return _t('inspector.title_count', {
+                 title: _t.html('feature.' + k + '.description'),
+                 count: stats[k]
+               });

              }
 
              }
 

-             cs.length = i;
-           }
-         }
-       }
-       /**
-        * attributes;
-        * children;
-        * 
-        * writeable properties:
-        * nodeValue,Attr:value,CharacterData:data
-        * prefix
-        */
-
+             return null;
+           }).filter(Boolean);
+           selection.html('');

 
 

-       function _removeChild(parentNode, child) {
-         var previous = child.previousSibling;
-         var next = child.nextSibling;
+           if (hiddenList.length) {
+             var tooltipBehavior = uiTooltip().placement('top').title(function () {
+               return hiddenList.join('<br/>');
+             });
+             selection.append('a').attr('class', 'chip').attr('href', '#').html(_t.html('feature_info.hidden_warning', {
+               count: count
+             })).call(tooltipBehavior).on('click', function (d3_event) {
+               tooltipBehavior.hide();
+               d3_event.preventDefault(); // open the Map Data pane

 
 

-         if (previous) {
-           previous.nextSibling = next;
-         } else {
-           parentNode.firstChild = next;
-         }
+               context.ui().togglePanes(context.container().select('.map-panes .map-data-pane'));
+             });
+           }

 
 

-         if (next) {
-           next.previousSibling = previous;
-         } else {
-           parentNode.lastChild = previous;
+           selection.classed('hide', !hiddenList.length);

          }
 
          }
 

-         _onUpdateChild(parentNode.ownerDocument, parentNode);
-
-         return child;
+         return function (selection) {
+           update(selection);
+           context.features().on('change.feature_info', function () {
+             update(selection);
+           });
+         };

        }
        }

-       /**
-        * preformance key(refChild == null)
-        */
-
-
-       function _insertBefore(parentNode, newChild, nextChild) {
-         var cp = newChild.parentNode;

 
 

-         if (cp) {
-           cp.removeChild(newChild); //remove and update
-         }
+       function uiFlash(context) {
+         var _flashTimer;

 
 

-         if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
-           var newFirst = newChild.firstChild;
+         var _duration = 2000;
+         var _iconName = '#iD-icon-no';
+         var _iconClass = 'disabled';
+         var _label = '';

 
 

-           if (newFirst == null) {
-             return newChild;
+         function flash() {
+           if (_flashTimer) {
+             _flashTimer.stop();

            }
 
            }
 

-           var newLast = newChild.lastChild;
-         } else {
-           newFirst = newLast = newChild;
-         }
-
-         var pre = nextChild ? nextChild.previousSibling : parentNode.lastChild;
-         newFirst.previousSibling = pre;
-         newLast.nextSibling = nextChild;
+           context.container().select('.main-footer-wrap').classed('footer-hide', true).classed('footer-show', false);
+           context.container().select('.flash-wrap').classed('footer-hide', false).classed('footer-show', true);
+           var content = context.container().select('.flash-wrap').selectAll('.flash-content').data([0]); // Enter

 
 

-         if (pre) {
-           pre.nextSibling = newFirst;
-         } else {
-           parentNode.firstChild = newFirst;
-         }
+           var contentEnter = content.enter().append('div').attr('class', 'flash-content');
+           var iconEnter = contentEnter.append('svg').attr('class', 'flash-icon icon').append('g').attr('transform', 'translate(10,10)');
+           iconEnter.append('circle').attr('r', 9);
+           iconEnter.append('use').attr('transform', 'translate(-7,-7)').attr('width', '14').attr('height', '14');
+           contentEnter.append('div').attr('class', 'flash-text'); // Update

 
 

-         if (nextChild == null) {
-           parentNode.lastChild = newLast;
-         } else {
-           nextChild.previousSibling = newLast;
+           content = content.merge(contentEnter);
+           content.selectAll('.flash-icon').attr('class', 'icon flash-icon ' + (_iconClass || ''));
+           content.selectAll('.flash-icon use').attr('xlink:href', _iconName);
+           content.selectAll('.flash-text').attr('class', 'flash-text').html(_label);
+           _flashTimer = d3_timeout(function () {
+             _flashTimer = null;
+             context.container().select('.main-footer-wrap').classed('footer-hide', false).classed('footer-show', true);
+             context.container().select('.flash-wrap').classed('footer-hide', true).classed('footer-show', false);
+           }, _duration);
+           return content;

          }
 
          }
 

-         do {
-           newFirst.parentNode = parentNode;
-         } while (newFirst !== newLast && (newFirst = newFirst.nextSibling));
+         flash.duration = function (_) {
+           if (!arguments.length) return _duration;
+           _duration = _;
+           return flash;
+         };

 
 

-         _onUpdateChild(parentNode.ownerDocument || parentNode, parentNode); //console.log(parentNode.lastChild.nextSibling == null)
+         flash.label = function (_) {
+           if (!arguments.length) return _label;
+           _label = _;
+           return flash;
+         };

 
 

+         flash.iconName = function (_) {
+           if (!arguments.length) return _iconName;
+           _iconName = _;
+           return flash;
+         };

 
 

-         if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
-           newChild.firstChild = newChild.lastChild = null;
-         }
+         flash.iconClass = function (_) {
+           if (!arguments.length) return _iconClass;
+           _iconClass = _;
+           return flash;
+         };

 
 

-         return newChild;
+         return flash;

        }
 
        }
 

-       function _appendSingleChild(parentNode, newChild) {
-         var cp = newChild.parentNode;
-
-         if (cp) {
-           var pre = parentNode.lastChild;
-           cp.removeChild(newChild); //remove and update
+       function uiFullScreen(context) {
+         var element = context.container().node(); // var button = d3_select(null);

 
 

-           var pre = parentNode.lastChild;
+         function getFullScreenFn() {
+           if (element.requestFullscreen) {
+             return element.requestFullscreen;
+           } else if (element.msRequestFullscreen) {
+             return element.msRequestFullscreen;
+           } else if (element.mozRequestFullScreen) {
+             return element.mozRequestFullScreen;
+           } else if (element.webkitRequestFullscreen) {
+             return element.webkitRequestFullscreen;
+           }

          }
 
          }
 

-         var pre = parentNode.lastChild;
-         newChild.parentNode = parentNode;
-         newChild.previousSibling = pre;
-         newChild.nextSibling = null;
-
-         if (pre) {
-           pre.nextSibling = newChild;
-         } else {
-           parentNode.firstChild = newChild;
+         function getExitFullScreenFn() {
+           if (document.exitFullscreen) {
+             return document.exitFullscreen;
+           } else if (document.msExitFullscreen) {
+             return document.msExitFullscreen;
+           } else if (document.mozCancelFullScreen) {
+             return document.mozCancelFullScreen;
+           } else if (document.webkitExitFullscreen) {
+             return document.webkitExitFullscreen;
+           }

          }
 
          }
 

-         parentNode.lastChild = newChild;
+         function isFullScreen() {
+           return document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement;
+         }

 
 

-         _onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
+         function isSupported() {
+           return !!getFullScreenFn();
+         }

 
 

-         return newChild; //console.log("__aa",parentNode.lastChild.nextSibling == null)
-       }
+         function fullScreen(d3_event) {
+           d3_event.preventDefault();

 
 

-       Document.prototype = {
-         //implementation : null,
-         nodeName: '#document',
-         nodeType: DOCUMENT_NODE,
-         doctype: null,
-         documentElement: null,
-         _inc: 1,
-         insertBefore: function insertBefore(newChild, refChild) {
-           //raises 
-           if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
-             var child = newChild.firstChild;
+           if (!isFullScreen()) {
+             // button.classed('active', true);
+             getFullScreenFn().apply(element);
+           } else {
+             // button.classed('active', false);
+             getExitFullScreenFn().apply(document);
+           }
+         }

 
 

-             while (child) {
-               var next = child.nextSibling;
-               this.insertBefore(child, refChild);
-               child = next;
-             }
+         return function () {
+           // selection) {
+           if (!isSupported()) return; // button = selection.append('button')
+           //     .attr('title', t('full_screen'))
+           //     .on('click', fullScreen)
+           //     .call(tooltip);
+           // button.append('span')
+           //     .attr('class', 'icon full-screen');

 
 

-             return newChild;
-           }
+           var detected = utilDetect();
+           var keys = detected.os === 'mac' ? [uiCmd('⌃⌘F'), 'f11'] : ['f11'];
+           context.keybinding().on(keys, fullScreen);
+         };
+       }

 
 

-           if (this.documentElement == null && newChild.nodeType == ELEMENT_NODE) {
-             this.documentElement = newChild;
-           }
+       function uiGeolocate(context) {
+         var _geolocationOptions = {
+           // prioritize speed and power usage over precision
+           enableHighAccuracy: false,
+           // don't hang indefinitely getting the location
+           timeout: 6000 // 6sec

 
 

-           return _insertBefore(this, newChild, refChild), newChild.ownerDocument = this, newChild;
-         },
-         removeChild: function removeChild(oldChild) {
-           if (this.documentElement == oldChild) {
-             this.documentElement = null;
-           }
+         };

 
 

-           return _removeChild(this, oldChild);
-         },
-         // Introduced in DOM Level 2:
-         importNode: function importNode(importedNode, deep) {
-           return _importNode(this, importedNode, deep);
-         },
-         // Introduced in DOM Level 2:
-         getElementById: function getElementById(id) {
-           var rtv = null;
+         var _locating = uiLoading(context).message(_t.html('geolocate.locating')).blocking(true);

 
 

-           _visitNode(this.documentElement, function (node) {
-             if (node.nodeType == ELEMENT_NODE) {
-               if (node.getAttribute('id') == id) {
-                 rtv = node;
-                 return true;
-               }
-             }
-           });
+         var _layer = context.layers().layer('geolocate');

 
 

-           return rtv;
-         },
-         //document factory method:
-         createElement: function createElement(tagName) {
-           var node = new Element();
-           node.ownerDocument = this;
-           node.nodeName = tagName;
-           node.tagName = tagName;
-           node.childNodes = new NodeList();
-           var attrs = node.attributes = new NamedNodeMap();
-           attrs._ownerElement = node;
-           return node;
-         },
-         createDocumentFragment: function createDocumentFragment() {
-           var node = new DocumentFragment();
-           node.ownerDocument = this;
-           node.childNodes = new NodeList();
-           return node;
-         },
-         createTextNode: function createTextNode(data) {
-           var node = new Text();
-           node.ownerDocument = this;
-           node.appendData(data);
-           return node;
-         },
-         createComment: function createComment(data) {
-           var node = new Comment();
-           node.ownerDocument = this;
-           node.appendData(data);
-           return node;
-         },
-         createCDATASection: function createCDATASection(data) {
-           var node = new CDATASection();
-           node.ownerDocument = this;
-           node.appendData(data);
-           return node;
-         },
-         createProcessingInstruction: function createProcessingInstruction(target, data) {
-           var node = new ProcessingInstruction();
-           node.ownerDocument = this;
-           node.tagName = node.target = target;
-           node.nodeValue = node.data = data;
-           return node;
-         },
-         createAttribute: function createAttribute(name) {
-           var node = new Attr();
-           node.ownerDocument = this;
-           node.name = name;
-           node.nodeName = name;
-           node.localName = name;
-           node.specified = true;
-           return node;
-         },
-         createEntityReference: function createEntityReference(name) {
-           var node = new EntityReference();
-           node.ownerDocument = this;
-           node.nodeName = name;
-           return node;
-         },
-         // Introduced in DOM Level 2:
-         createElementNS: function createElementNS(namespaceURI, qualifiedName) {
-           var node = new Element();
-           var pl = qualifiedName.split(':');
-           var attrs = node.attributes = new NamedNodeMap();
-           node.childNodes = new NodeList();
-           node.ownerDocument = this;
-           node.nodeName = qualifiedName;
-           node.tagName = qualifiedName;
-           node.namespaceURI = namespaceURI;
-
-           if (pl.length == 2) {
-             node.prefix = pl[0];
-             node.localName = pl[1];
-           } else {
-             //el.prefix = null;
-             node.localName = qualifiedName;
-           }
+         var _position;

 
 

-           attrs._ownerElement = node;
-           return node;
-         },
-         // Introduced in DOM Level 2:
-         createAttributeNS: function createAttributeNS(namespaceURI, qualifiedName) {
-           var node = new Attr();
-           var pl = qualifiedName.split(':');
-           node.ownerDocument = this;
-           node.nodeName = qualifiedName;
-           node.name = qualifiedName;
-           node.namespaceURI = namespaceURI;
-           node.specified = true;
-
-           if (pl.length == 2) {
-             node.prefix = pl[0];
-             node.localName = pl[1];
-           } else {
-             //el.prefix = null;
-             node.localName = qualifiedName;
-           }
+         var _extent;

 
 

-           return node;
-         }
-       };
+         var _timeoutID;

 
 

-       _extends(Document, Node);
+         var _button = select(null);

 
 

-       function Element() {
-         this._nsMap = {};
-       }
-       Element.prototype = {
-         nodeType: ELEMENT_NODE,
-         hasAttribute: function hasAttribute(name) {
-           return this.getAttributeNode(name) != null;
-         },
-         getAttribute: function getAttribute(name) {
-           var attr = this.getAttributeNode(name);
-           return attr && attr.value || '';
-         },
-         getAttributeNode: function getAttributeNode(name) {
-           return this.attributes.getNamedItem(name);
-         },
-         setAttribute: function setAttribute(name, value) {
-           var attr = this.ownerDocument.createAttribute(name);
-           attr.value = attr.nodeValue = "" + value;
-           this.setAttributeNode(attr);
-         },
-         removeAttribute: function removeAttribute(name) {
-           var attr = this.getAttributeNode(name);
-           attr && this.removeAttributeNode(attr);
-         },
-         //four real opeartion method
-         appendChild: function appendChild(newChild) {
-           if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
-             return this.insertBefore(newChild, null);
-           } else {
-             return _appendSingleChild(this, newChild);
-           }
-         },
-         setAttributeNode: function setAttributeNode(newAttr) {
-           return this.attributes.setNamedItem(newAttr);
-         },
-         setAttributeNodeNS: function setAttributeNodeNS(newAttr) {
-           return this.attributes.setNamedItemNS(newAttr);
-         },
-         removeAttributeNode: function removeAttributeNode(oldAttr) {
-           //console.log(this == oldAttr.ownerElement)
-           return this.attributes.removeNamedItem(oldAttr.nodeName);
-         },
-         //get real attribute name,and remove it by removeAttributeNode
-         removeAttributeNS: function removeAttributeNS(namespaceURI, localName) {
-           var old = this.getAttributeNodeNS(namespaceURI, localName);
-           old && this.removeAttributeNode(old);
-         },
-         hasAttributeNS: function hasAttributeNS(namespaceURI, localName) {
-           return this.getAttributeNodeNS(namespaceURI, localName) != null;
-         },
-         getAttributeNS: function getAttributeNS(namespaceURI, localName) {
-           var attr = this.getAttributeNodeNS(namespaceURI, localName);
-           return attr && attr.value || '';
-         },
-         setAttributeNS: function setAttributeNS(namespaceURI, qualifiedName, value) {
-           var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
-           attr.value = attr.nodeValue = "" + value;
-           this.setAttributeNode(attr);
-         },
-         getAttributeNodeNS: function getAttributeNodeNS(namespaceURI, localName) {
-           return this.attributes.getNamedItemNS(namespaceURI, localName);
-         },
-         getElementsByTagName: function getElementsByTagName(tagName) {
-           return new LiveNodeList(this, function (base) {
-             var ls = [];
+         function click() {
+           if (context.inIntro()) return;

 
 

-             _visitNode(base, function (node) {
-               if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {
-                 ls.push(node);
-               }
-             });
+           if (!_layer.enabled() && !_locating.isShown()) {
+             // This timeout ensures that we still call finish() even if
+             // the user declines to share their location in Firefox
+             _timeoutID = setTimeout(error, 10000
+             /* 10sec */
+             );
+             context.container().call(_locating); // get the latest position even if we already have one

 
 

-             return ls;
-           });
-         },
-         getElementsByTagNameNS: function getElementsByTagNameNS(namespaceURI, localName) {
-           return new LiveNodeList(this, function (base) {
-             var ls = [];
+             navigator.geolocation.getCurrentPosition(success, error, _geolocationOptions);
+           } else {
+             _locating.close();

 
 

-             _visitNode(base, function (node) {
-               if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {
-                 ls.push(node);
-               }
-             });
+             _layer.enabled(null, false);

 
 

-             return ls;
-           });
+             updateButtonState();
+           }

          }
          }

-       };
-       Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
-       Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;

 
 

-       _extends(Element, Node);
-
-       function Attr() {}
-       Attr.prototype.nodeType = ATTRIBUTE_NODE;
+         function zoomTo() {
+           context.enter(modeBrowse(context));
+           var map = context.map();

 
 

-       _extends(Attr, Node);
+           _layer.enabled(_position, true);

 
 

-       function CharacterData() {}
-       CharacterData.prototype = {
-         data: '',
-         substringData: function substringData(offset, count) {
-           return this.data.substring(offset, offset + count);
-         },
-         appendData: function appendData(text) {
-           text = this.data + text;
-           this.nodeValue = this.data = text;
-           this.length = text.length;
-         },
-         insertData: function insertData(offset, text) {
-           this.replaceData(offset, 0, text);
-         },
-         appendChild: function appendChild(newChild) {
-           throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);
-         },
-         deleteData: function deleteData(offset, count) {
-           this.replaceData(offset, count, "");
-         },
-         replaceData: function replaceData(offset, count, text) {
-           var start = this.data.substring(0, offset);
-           var end = this.data.substring(offset + count);
-           text = start + text + end;
-           this.nodeValue = this.data = text;
-           this.length = text.length;
+           updateButtonState();
+           map.centerZoomEase(_extent.center(), Math.min(20, map.extentZoom(_extent)));

          }
          }

-       };
-
-       _extends(CharacterData, Node);

 
 

-       function Text() {}
-       Text.prototype = {
-         nodeName: "#text",
-         nodeType: TEXT_NODE,
-         splitText: function splitText(offset) {
-           var text = this.data;
-           var newText = text.substring(offset);
-           text = text.substring(0, offset);
-           this.data = this.nodeValue = text;
-           this.length = text.length;
-           var newNode = this.ownerDocument.createTextNode(newText);
+         function success(geolocation) {
+           _position = geolocation;
+           var coords = _position.coords;
+           _extent = geoExtent([coords.longitude, coords.latitude]).padByMeters(coords.accuracy);
+           zoomTo();
+           finish();
+         }

 
 

-           if (this.parentNode) {
-             this.parentNode.insertBefore(newNode, this.nextSibling);
+         function error() {
+           if (_position) {
+             // use the position from a previous call if we have one
+             zoomTo();
+           } else {
+             context.ui().flash.label(_t.html('geolocate.location_unavailable')).iconName('#iD-icon-geolocate')();

            }
 
            }
 

-           return newNode;
+           finish();

          }
          }

-       };

 
 

-       _extends(Text, CharacterData);
+         function finish() {
+           _locating.close(); // unblock ui

 
 

-       function Comment() {}
-       Comment.prototype = {
-         nodeName: "#comment",
-         nodeType: COMMENT_NODE
-       };

 
 

-       _extends(Comment, CharacterData);
+           if (_timeoutID) {
+             clearTimeout(_timeoutID);
+           }

 
 

-       function CDATASection() {}
-       CDATASection.prototype = {
-         nodeName: "#cdata-section",
-         nodeType: CDATA_SECTION_NODE
-       };
+           _timeoutID = undefined;
+         }

 
 

-       _extends(CDATASection, CharacterData);
+         function updateButtonState() {
+           _button.classed('active', _layer.enabled());
+         }

 
 

-       function DocumentType() {}
-       DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
+         return function (selection) {
+           if (!navigator.geolocation || !navigator.geolocation.getCurrentPosition) return;
+           _button = selection.append('button').on('click', click).call(svgIcon('#iD-icon-geolocate', 'light')).call(uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(_t.html('geolocate.title')).keys([_t('geolocate.key')]));
+           context.keybinding().on(_t('geolocate.key'), click);
+         };
+       }

 
 

-       _extends(DocumentType, Node);
+       function uiPanelBackground(context) {
+         var background = context.background();
+         var _currSourceName = null;
+         var _metadata = {};
+         var _metadataKeys = ['zoom', 'vintage', 'source', 'description', 'resolution', 'accuracy'];

 
 

-       function Notation() {}
-       Notation.prototype.nodeType = NOTATION_NODE;
+         var debouncedRedraw = debounce(redraw, 250);

 
 

-       _extends(Notation, Node);
+         function redraw(selection) {
+           var source = background.baseLayerSource();
+           if (!source) return;
+           var isDG = source.id.match(/^DigitalGlobe/i) !== null;
+           var sourceLabel = source.label();

 
 

-       function Entity() {}
-       Entity.prototype.nodeType = ENTITY_NODE;
+           if (_currSourceName !== sourceLabel) {
+             _currSourceName = sourceLabel;
+             _metadata = {};
+           }

 
 

-       _extends(Entity, Node);
+           selection.html('');
+           var list = selection.append('ul').attr('class', 'background-info');
+           list.append('li').html(_currSourceName);

 
 

-       function EntityReference() {}
-       EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
+           _metadataKeys.forEach(function (k) {
+             // DigitalGlobe vintage is available in raster layers for now.
+             if (isDG && k === 'vintage') return;
+             list.append('li').attr('class', 'background-info-list-' + k).classed('hide', !_metadata[k]).html(_t.html('info_panels.background.' + k) + ':').append('span').attr('class', 'background-info-span-' + k).html(_metadata[k]);
+           });

 
 

-       _extends(EntityReference, Node);
+           debouncedGetMetadata(selection);
+           var toggleTiles = context.getDebug('tile') ? 'hide_tiles' : 'show_tiles';
+           selection.append('a').html(_t.html('info_panels.background.' + toggleTiles)).attr('href', '#').attr('class', 'button button-toggle-tiles').on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.setDebug('tile', !context.getDebug('tile'));
+             selection.call(redraw);
+           });

 
 

-       function DocumentFragment() {}
-       DocumentFragment.prototype.nodeName = "#document-fragment";
-       DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;
+           if (isDG) {
+             var key = source.id + '-vintage';
+             var sourceVintage = context.background().findSource(key);
+             var showsVintage = context.background().showsLayer(sourceVintage);
+             var toggleVintage = showsVintage ? 'hide_vintage' : 'show_vintage';
+             selection.append('a').html(_t.html('info_panels.background.' + toggleVintage)).attr('href', '#').attr('class', 'button button-toggle-vintage').on('click', function (d3_event) {
+               d3_event.preventDefault();
+               context.background().toggleOverlayLayer(sourceVintage);
+               selection.call(redraw);
+             });
+           } // disable if necessary

 
 

-       _extends(DocumentFragment, Node);

 
 

-       function ProcessingInstruction() {}
+           ['DigitalGlobe-Premium', 'DigitalGlobe-Standard'].forEach(function (layerId) {
+             if (source.id !== layerId) {
+               var key = layerId + '-vintage';
+               var sourceVintage = context.background().findSource(key);

 
 

-       ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
+               if (context.background().showsLayer(sourceVintage)) {
+                 context.background().toggleOverlayLayer(sourceVintage);
+               }
+             }
+           });
+         }

 
 

-       _extends(ProcessingInstruction, Node);
+         var debouncedGetMetadata = debounce(getMetadata, 250);

 
 

-       function XMLSerializer$1() {}
+         function getMetadata(selection) {
+           var tile = context.container().select('.layer-background img.tile-center'); // tile near viewport center

 
 

-       XMLSerializer$1.prototype.serializeToString = function (node, isHtml, nodeFilter) {
-         return nodeSerializeToString.call(node, isHtml, nodeFilter);
-       };
+           if (tile.empty()) return;
+           var sourceName = _currSourceName;
+           var d = tile.datum();
+           var zoom = d && d.length >= 3 && d[2] || Math.floor(context.map().zoom());
+           var center = context.map().center(); // update zoom

 
 

-       Node.prototype.toString = nodeSerializeToString;
+           _metadata.zoom = String(zoom);
+           selection.selectAll('.background-info-list-zoom').classed('hide', false).selectAll('.background-info-span-zoom').html(_metadata.zoom);
+           if (!d || !d.length >= 3) return;
+           background.baseLayerSource().getMetadata(center, d, function (err, result) {
+             if (err || _currSourceName !== sourceName) return; // update vintage

 
 

-       function nodeSerializeToString(isHtml, nodeFilter) {
-         var buf = [];
-         var refNode = this.nodeType == 9 ? this.documentElement : this;
-         var prefix = refNode.prefix;
-         var uri = refNode.namespaceURI;
+             var vintage = result.vintage;
+             _metadata.vintage = vintage && vintage.range || _t('info_panels.background.unknown');
+             selection.selectAll('.background-info-list-vintage').classed('hide', false).selectAll('.background-info-span-vintage').html(_metadata.vintage); // update other _metadata

 
 

-         if (uri && prefix == null) {
-           //console.log(prefix)
-           var prefix = refNode.lookupPrefix(uri);
+             _metadataKeys.forEach(function (k) {
+               if (k === 'zoom' || k === 'vintage') return; // done already

 
 

-           if (prefix == null) {
-             //isHTML = true;
-             var visibleNamespaces = [{
-               namespace: uri,
-               prefix: null
-             } //{namespace:uri,prefix:''}
-             ];
-           }
+               var val = result[k];
+               _metadata[k] = val;
+               selection.selectAll('.background-info-list-' + k).classed('hide', !val).selectAll('.background-info-span-' + k).html(val);
+             });
+           });

          }
 
          }
 

-         serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces); //console.log('###',this.nodeType,uri,prefix,buf.join(''))
+         var panel = function panel(selection) {
+           selection.call(redraw);
+           context.map().on('drawn.info-background', function () {
+             selection.call(debouncedRedraw);
+           }).on('move.info-background', function () {
+             selection.call(debouncedGetMetadata);
+           });
+         };
+
+         panel.off = function () {
+           context.map().on('drawn.info-background', null).on('move.info-background', null);
+         };

 
 

-         return buf.join('');
+         panel.id = 'background';
+         panel.label = _t.html('info_panels.background.title');
+         panel.key = _t('info_panels.background.key');
+         return panel;

        }
 
        }
 

-       function needNamespaceDefine(node, isHTML, visibleNamespaces) {
-         var prefix = node.prefix || '';
-         var uri = node.namespaceURI;
-
-         if (!prefix && !uri) {
-           return false;
-         }
+       function uiPanelHistory(context) {
+         var osm;

 
 

-         if (prefix === "xml" && uri === "http://www.w3.org/XML/1998/namespace" || uri == 'http://www.w3.org/2000/xmlns/') {
-           return false;
+         function displayTimestamp(timestamp) {
+           if (!timestamp) return _t('info_panels.history.unknown');
+           var options = {
+             day: 'numeric',
+             month: 'short',
+             year: 'numeric',
+             hour: 'numeric',
+             minute: 'numeric',
+             second: 'numeric'
+           };
+           var d = new Date(timestamp);
+           if (isNaN(d.getTime())) return _t('info_panels.history.unknown');
+           return d.toLocaleString(_mainLocalizer.localeCode(), options);

          }
 
          }
 

-         var i = visibleNamespaces.length; //console.log('@@@@',node.tagName,prefix,uri,visibleNamespaces)
+         function displayUser(selection, userName) {
+           if (!userName) {
+             selection.append('span').html(_t.html('info_panels.history.unknown'));
+             return;
+           }

 
 

-         while (i--) {
-           var ns = visibleNamespaces[i]; // get namespace prefix
-           //console.log(node.nodeType,node.tagName,ns.prefix,prefix)
+           selection.append('span').attr('class', 'user-name').html(userName);
+           var links = selection.append('div').attr('class', 'links');

 
 

-           if (ns.prefix == prefix) {
-             return ns.namespace != uri;
+           if (osm) {
+             links.append('a').attr('class', 'user-osm-link').attr('href', osm.userURL(userName)).attr('target', '_blank').html('OSM');

            }
            }

-         } //console.log(isHTML,uri,prefix=='')
-         //if(isHTML && prefix ==null && uri == 'http://www.w3.org/1999/xhtml'){
-         //    return false;
-         //}
-         //node.flag = '11111'
-         //console.error(3,true,node.flag,node.prefix,node.namespaceURI)

 
 

+           links.append('a').attr('class', 'user-hdyc-link').attr('href', 'https://hdyc.neis-one.org/?' + userName).attr('target', '_blank').attr('tabindex', -1).html('HDYC');
+         }

 
 

-         return true;
-       }
+         function displayChangeset(selection, changeset) {
+           if (!changeset) {
+             selection.append('span').html(_t.html('info_panels.history.unknown'));
+             return;
+           }

 
 

-       function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {
-         if (nodeFilter) {
-           node = nodeFilter(node);
+           selection.append('span').attr('class', 'changeset-id').html(changeset);
+           var links = selection.append('div').attr('class', 'links');

 
 

-           if (node) {
-             if (typeof node == 'string') {
-               buf.push(node);
-               return;
-             }
-           } else {
-             return;
-           } //buf.sort.apply(attrs, attributeSorter);
+           if (osm) {
+             links.append('a').attr('class', 'changeset-osm-link').attr('href', osm.changesetURL(changeset)).attr('target', '_blank').html('OSM');
+           }

 
 

+           links.append('a').attr('class', 'changeset-osmcha-link').attr('href', 'https://osmcha.org/changesets/' + changeset).attr('target', '_blank').html('OSMCha');
+           links.append('a').attr('class', 'changeset-achavi-link').attr('href', 'https://overpass-api.de/achavi/?changeset=' + changeset).attr('target', '_blank').html('Achavi');

          }
 
          }
 

-         switch (node.nodeType) {
-           case ELEMENT_NODE:
-             if (!visibleNamespaces) visibleNamespaces = [];
-             var startVisibleNamespaces = visibleNamespaces.length;
-             var attrs = node.attributes;
-             var len = attrs.length;
-             var child = node.firstChild;
-             var nodeName = node.tagName;
-             isHTML = htmlns === node.namespaceURI || isHTML;
-             buf.push('<', nodeName);
+         function redraw(selection) {
+           var selectedNoteID = context.selectedNoteID();
+           osm = context.connection();
+           var selected, note, entity;

 
 

-             for (var i = 0; i < len; i++) {
-               // add namespaces for attributes
-               var attr = attrs.item(i);
+           if (selectedNoteID && osm) {
+             // selected 1 note
+             selected = [_t('note.note') + ' ' + selectedNoteID];
+             note = osm.getNote(selectedNoteID);
+           } else {
+             // selected 1..n entities
+             selected = context.selectedIDs().filter(function (e) {
+               return context.hasEntity(e);
+             });

 
 

-               if (attr.prefix == 'xmlns') {
-                 visibleNamespaces.push({
-                   prefix: attr.localName,
-                   namespace: attr.value
-                 });
-               } else if (attr.nodeName == 'xmlns') {
-                 visibleNamespaces.push({
-                   prefix: '',
-                   namespace: attr.value
-                 });
-               }
+             if (selected.length) {
+               entity = context.entity(selected[0]);

              }
              }

+           }

 
 

-             for (var i = 0; i < len; i++) {
-               var attr = attrs.item(i);
+           var singular = selected.length === 1 ? selected[0] : null;
+           selection.html('');
+           selection.append('h4').attr('class', 'history-heading').html(singular || _t.html('info_panels.selected', {
+             n: selected.length
+           }));
+           if (!singular) return;

 
 

-               if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {
-                 var prefix = attr.prefix || '';
-                 var uri = attr.namespaceURI;
-                 var ns = prefix ? ' xmlns:' + prefix : " xmlns";
-                 buf.push(ns, '="', uri, '"');
-                 visibleNamespaces.push({
-                   prefix: prefix,
-                   namespace: uri
-                 });
-               }
+           if (entity) {
+             selection.call(redrawEntity, entity);
+           } else if (note) {
+             selection.call(redrawNote, note);
+           }
+         }

 
 

-               serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);
-             } // add namespace for current node               
+         function redrawNote(selection, note) {
+           if (!note || note.isNew()) {
+             selection.append('div').html(_t.html('info_panels.history.note_no_history'));
+             return;
+           }

 
 

+           var list = selection.append('ul');
+           list.append('li').html(_t.html('info_panels.history.note_comments') + ':').append('span').html(note.comments.length);

 
 

-             if (needNamespaceDefine(node, isHTML, visibleNamespaces)) {
-               var prefix = node.prefix || '';
-               var uri = node.namespaceURI;
-               var ns = prefix ? ' xmlns:' + prefix : " xmlns";
-               buf.push(ns, '="', uri, '"');
-               visibleNamespaces.push({
-                 prefix: prefix,
-                 namespace: uri
-               });
-             }
+           if (note.comments.length) {
+             list.append('li').html(_t.html('info_panels.history.note_created_date') + ':').append('span').html(displayTimestamp(note.comments[0].date));
+             list.append('li').html(_t.html('info_panels.history.note_created_user') + ':').call(displayUser, note.comments[0].user);
+           }

 
 

-             if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {
-               buf.push('>'); //if is cdata child node
+           if (osm) {
+             selection.append('a').attr('class', 'view-history-on-osm').attr('target', '_blank').attr('href', osm.noteURL(note)).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('info_panels.history.note_link_text'));
+           }
+         }

 
 

-               if (isHTML && /^script$/i.test(nodeName)) {
-                 while (child) {
-                   if (child.data) {
-                     buf.push(child.data);
-                   } else {
-                     serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces);
-                   }
+         function redrawEntity(selection, entity) {
+           if (!entity || entity.isNew()) {
+             selection.append('div').html(_t.html('info_panels.history.no_history'));
+             return;
+           }

 
 

-                   child = child.nextSibling;
-                 }
-               } else {
-                 while (child) {
-                   serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces);
-                   child = child.nextSibling;
-                 }
-               }
+           var links = selection.append('div').attr('class', 'links');

 
 

-               buf.push('</', nodeName, '>');
-             } else {
-               buf.push('/>');
-             } // remove added visible namespaces
-             //visibleNamespaces.length = startVisibleNamespaces;
+           if (osm) {
+             links.append('a').attr('class', 'view-history-on-osm').attr('href', osm.historyURL(entity)).attr('target', '_blank').attr('title', _t('info_panels.history.link_text')).html('OSM');
+           }

 
 

+           links.append('a').attr('class', 'pewu-history-viewer-link').attr('href', 'https://pewu.github.io/osm-history/#/' + entity.type + '/' + entity.osmId()).attr('target', '_blank').attr('tabindex', -1).html('PeWu');
+           var list = selection.append('ul');
+           list.append('li').html(_t.html('info_panels.history.version') + ':').append('span').html(entity.version);
+           list.append('li').html(_t.html('info_panels.history.last_edit') + ':').append('span').html(displayTimestamp(entity.timestamp));
+           list.append('li').html(_t.html('info_panels.history.edited_by') + ':').call(displayUser, entity.user);
+           list.append('li').html(_t.html('info_panels.history.changeset') + ':').call(displayChangeset, entity.changeset);
+         }

 
 

-             return;
+         var panel = function panel(selection) {
+           selection.call(redraw);
+           context.map().on('drawn.info-history', function () {
+             selection.call(redraw);
+           });
+           context.on('enter.info-history', function () {
+             selection.call(redraw);
+           });
+         };

 
 

-           case DOCUMENT_NODE:
-           case DOCUMENT_FRAGMENT_NODE:
-             var child = node.firstChild;
+         panel.off = function () {
+           context.map().on('drawn.info-history', null);
+           context.on('enter.info-history', null);
+         };

 
 

-             while (child) {
-               serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces);
-               child = child.nextSibling;
-             }
+         panel.id = 'history';
+         panel.label = _t.html('info_panels.history.title');
+         panel.key = _t('info_panels.history.key');
+         return panel;
+       }

 
 

-             return;
+       var OSM_PRECISION = 7;
+       /**
+        * Returns a localized representation of the given length measurement.
+        *
+        * @param {Number} m area in meters
+        * @param {Boolean} isImperial true for U.S. customary units; false for metric
+        */

 
 

-           case ATTRIBUTE_NODE:
-             return buf.push(' ', node.name, '="', node.value.replace(/[<&"]/g, _xmlEncoder), '"');
+       function displayLength(m, isImperial) {
+         var d = m * (isImperial ? 3.28084 : 1);
+         var unit;

 
 

-           case TEXT_NODE:
-             return buf.push(node.data.replace(/[<&]/g, _xmlEncoder));
+         if (isImperial) {
+           if (d >= 5280) {
+             d /= 5280;
+             unit = 'miles';
+           } else {
+             unit = 'feet';
+           }
+         } else {
+           if (d >= 1000) {
+             d /= 1000;
+             unit = 'kilometers';
+           } else {
+             unit = 'meters';
+           }
+         }

 
 

-           case CDATA_SECTION_NODE:
-             return buf.push('<![CDATA[', node.data, ']]>');
+         return _t('units.' + unit, {
+           quantity: d.toLocaleString(_mainLocalizer.localeCode(), {
+             maximumSignificantDigits: 4
+           })
+         });
+       }
+       /**
+        * Returns a localized representation of the given area measurement.
+        *
+        * @param {Number} m2 area in square meters
+        * @param {Boolean} isImperial true for U.S. customary units; false for metric
+        */

 
 

-           case COMMENT_NODE:
-             return buf.push("<!--", node.data, "-->");
+       function displayArea(m2, isImperial) {
+         var locale = _mainLocalizer.localeCode();
+         var d = m2 * (isImperial ? 10.7639111056 : 1);
+         var d1, d2, area;
+         var unit1 = '';
+         var unit2 = '';

 
 

-           case DOCUMENT_TYPE_NODE:
-             var pubid = node.publicId;
-             var sysid = node.systemId;
-             buf.push('<!DOCTYPE ', node.name);
+         if (isImperial) {
+           if (d >= 6969600) {
+             // > 0.25mi² show mi²
+             d1 = d / 27878400;
+             unit1 = 'square_miles';
+           } else {
+             d1 = d;
+             unit1 = 'square_feet';
+           }

 
 

-             if (pubid) {
-               buf.push(' PUBLIC "', pubid);
+           if (d > 4356 && d < 43560000) {
+             // 0.1 - 1000 acres
+             d2 = d / 43560;
+             unit2 = 'acres';
+           }
+         } else {
+           if (d >= 250000) {
+             // > 0.25km² show km²
+             d1 = d / 1000000;
+             unit1 = 'square_kilometers';
+           } else {
+             d1 = d;
+             unit1 = 'square_meters';
+           }

 
 

-               if (sysid && sysid != '.') {
-                 buf.push('" "', sysid);
-               }
+           if (d > 1000 && d < 10000000) {
+             // 0.1 - 1000 hectares
+             d2 = d / 10000;
+             unit2 = 'hectares';
+           }
+         }

 
 

-               buf.push('">');
-             } else if (sysid && sysid != '.') {
-               buf.push(' SYSTEM "', sysid, '">');
-             } else {
-               var sub = node.internalSubset;
+         area = _t('units.' + unit1, {
+           quantity: d1.toLocaleString(locale, {
+             maximumSignificantDigits: 4
+           })
+         });

 
 

-               if (sub) {
-                 buf.push(" [", sub, "]");
-               }
+         if (d2) {
+           return _t('units.area_pair', {
+             area1: area,
+             area2: _t('units.' + unit2, {
+               quantity: d2.toLocaleString(locale, {
+                 maximumSignificantDigits: 2
+               })
+             })
+           });
+         } else {
+           return area;
+         }
+       }

 
 

-               buf.push(">");
-             }
+       function wrap(x, min, max) {
+         var d = max - min;
+         return ((x - min) % d + d) % d + min;
+       }

 
 

-             return;
+       function clamp(x, min, max) {
+         return Math.max(min, Math.min(x, max));
+       }

 
 

-           case PROCESSING_INSTRUCTION_NODE:
-             return buf.push("<?", node.target, " ", node.data, "?>");
+       function displayCoordinate(deg, pos, neg) {
+         var locale = _mainLocalizer.localeCode();
+         var min = (Math.abs(deg) - Math.floor(Math.abs(deg))) * 60;
+         var sec = (min - Math.floor(min)) * 60;
+         var displayDegrees = _t('units.arcdegrees', {
+           quantity: Math.floor(Math.abs(deg)).toLocaleString(locale)
+         });
+         var displayCoordinate;

 
 

-           case ENTITY_REFERENCE_NODE:
-             return buf.push('&', node.nodeName, ';');
-           //case ENTITY_NODE:
-           //case NOTATION_NODE:
+         if (Math.floor(sec) > 0) {
+           displayCoordinate = displayDegrees + _t('units.arcminutes', {
+             quantity: Math.floor(min).toLocaleString(locale)
+           }) + _t('units.arcseconds', {
+             quantity: Math.round(sec).toLocaleString(locale)
+           });
+         } else if (Math.floor(min) > 0) {
+           displayCoordinate = displayDegrees + _t('units.arcminutes', {
+             quantity: Math.round(min).toLocaleString(locale)
+           });
+         } else {
+           displayCoordinate = _t('units.arcdegrees', {
+             quantity: Math.round(Math.abs(deg)).toLocaleString(locale)
+           });
+         }

 
 

-           default:
-             buf.push('??', node.nodeName);
+         if (deg === 0) {
+           return displayCoordinate;
+         } else {
+           return _t('units.coordinate', {
+             coordinate: displayCoordinate,
+             direction: _t('units.' + (deg > 0 ? pos : neg))
+           });

          }
        }
          }
        }

+       /**
+        * Returns given coordinate pair in degree-minute-second format.
+        *
+        * @param {Array<Number>} coord longitude and latitude
+        */

 
 

-       function _importNode(doc, node, deep) {
-         var node2;
-
-         switch (node.nodeType) {
-           case ELEMENT_NODE:
-             node2 = node.cloneNode(false);
-             node2.ownerDocument = doc;
-           //var attrs = node2.attributes;
-           //var len = attrs.length;
-           //for(var i=0;i<len;i++){
-           //node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));
-           //}

 
 

-           case DOCUMENT_FRAGMENT_NODE:
-             break;
+       function dmsCoordinatePair(coord) {
+         return _t('units.coordinate_pair', {
+           latitude: displayCoordinate(clamp(coord[1], -90, 90), 'north', 'south'),
+           longitude: displayCoordinate(wrap(coord[0], -180, 180), 'east', 'west')
+         });
+       }
+       /**
+        * Returns the given coordinate pair in decimal format.
+        * note: unlocalized to avoid comma ambiguity - see #4765
+        *
+        * @param {Array<Number>} coord longitude and latitude
+        */

 
 

-           case ATTRIBUTE_NODE:
-             deep = true;
-             break;
-           //case ENTITY_REFERENCE_NODE:
-           //case PROCESSING_INSTRUCTION_NODE:
-           ////case TEXT_NODE:
-           //case CDATA_SECTION_NODE:
-           //case COMMENT_NODE:
-           //  deep = false;
-           //  break;
-           //case DOCUMENT_NODE:
-           //case DOCUMENT_TYPE_NODE:
-           //cannot be imported.
-           //case ENTITY_NODE:
-           //case NOTATION_NODE：
-           //can not hit in level3
-           //default:throw e;
-         }
+       function decimalCoordinatePair(coord) {
+         return _t('units.coordinate_pair', {
+           latitude: clamp(coord[1], -90, 90).toFixed(OSM_PRECISION),
+           longitude: wrap(coord[0], -180, 180).toFixed(OSM_PRECISION)
+         });
+       }

 
 

-         if (!node2) {
-           node2 = node.cloneNode(false); //false
-         }
+       function uiPanelLocation(context) {
+         var currLocation = '';

 
 

-         node2.ownerDocument = doc;
-         node2.parentNode = null;
+         function redraw(selection) {
+           selection.html('');
+           var list = selection.append('ul'); // Mouse coordinates

 
 

-         if (deep) {
-           var child = node.firstChild;
+           var coord = context.map().mouseCoordinates();

 
 

-           while (child) {
-             node2.appendChild(_importNode(doc, child, deep));
-             child = child.nextSibling;
+           if (coord.some(isNaN)) {
+             coord = context.map().center();

            }
            }

-         }
-
-         return node2;
-       } //
-       //var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,
-       //                                      attributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};

 
 

+           list.append('li').html(dmsCoordinatePair(coord)).append('li').html(decimalCoordinatePair(coord)); // Location Info

 
 

-       function _cloneNode(doc, node, deep) {
-         var node2 = new node.constructor();
+           selection.append('div').attr('class', 'location-info').html(currLocation || ' ');
+           debouncedGetLocation(selection, coord);
+         }

 
 

-         for (var n in node) {
-           var v = node[n];
+         var debouncedGetLocation = debounce(getLocation, 250);

 
 

-           if (_typeof(v) != 'object') {
-             if (v != node2[n]) {
-               node2[n] = v;
-             }
+         function getLocation(selection, coord) {
+           if (!services.geocoder) {
+             currLocation = _t('info_panels.location.unknown_location');
+             selection.selectAll('.location-info').html(currLocation);
+           } else {
+             services.geocoder.reverse(coord, function (err, result) {
+               currLocation = result ? result.display_name : _t('info_panels.location.unknown_location');
+               selection.selectAll('.location-info').html(currLocation);
+             });

            }
          }
 
            }
          }
 

-         if (node.childNodes) {
-           node2.childNodes = new NodeList();
-         }
-
-         node2.ownerDocument = doc;
+         var panel = function panel(selection) {
+           selection.call(redraw);
+           context.surface().on(('PointerEvent' in window ? 'pointer' : 'mouse') + 'move.info-location', function () {
+             selection.call(redraw);
+           });
+         };

 
 

-         switch (node2.nodeType) {
-           case ELEMENT_NODE:
-             var attrs = node.attributes;
-             var attrs2 = node2.attributes = new NamedNodeMap();
-             var len = attrs.length;
-             attrs2._ownerElement = node2;
+         panel.off = function () {
+           context.surface().on('.info-location', null);
+         };

 
 

-             for (var i = 0; i < len; i++) {
-               node2.setAttributeNode(_cloneNode(doc, attrs.item(i), true));
-             }
+         panel.id = 'location';
+         panel.label = _t.html('info_panels.location.title');
+         panel.key = _t('info_panels.location.key');
+         return panel;
+       }

 
 

-             break;
+       function uiPanelMeasurement(context) {
+         function radiansToMeters(r) {
+           // using WGS84 authalic radius (6371007.1809 m)
+           return r * 6371007.1809;
+         }

 
 

-           case ATTRIBUTE_NODE:
-             deep = true;
+         function steradiansToSqmeters(r) {
+           // http://gis.stackexchange.com/a/124857/40446
+           return r / (4 * Math.PI) * 510065621724000;

          }
 
          }
 

-         if (deep) {
-           var child = node.firstChild;
+         function toLineString(feature) {
+           if (feature.type === 'LineString') return feature;
+           var result = {
+             type: 'LineString',
+             coordinates: []
+           };

 
 

-           while (child) {
-             node2.appendChild(_cloneNode(doc, child, deep));
-             child = child.nextSibling;
+           if (feature.type === 'Polygon') {
+             result.coordinates = feature.coordinates[0];
+           } else if (feature.type === 'MultiPolygon') {
+             result.coordinates = feature.coordinates[0][0];

            }
            }

+
+           return result;

          }
 
          }
 

-         return node2;
-       }
+         var _isImperial = !_mainLocalizer.usesMetric();

 
 

-       function __set__(object, key, value) {
-         object[key] = value;
-       } //do dynamic
+         function redraw(selection) {
+           var graph = context.graph();
+           var selectedNoteID = context.selectedNoteID();
+           var osm = services.osm;
+           var localeCode = _mainLocalizer.localeCode();
+           var heading;
+           var center, location, centroid;
+           var closed, geometry;
+           var totalNodeCount,
+               length = 0,
+               area = 0,
+               distance;

 
 

+           if (selectedNoteID && osm) {
+             // selected 1 note
+             var note = osm.getNote(selectedNoteID);
+             heading = _t('note.note') + ' ' + selectedNoteID;
+             location = note.loc;
+             geometry = 'note';
+           } else {
+             // selected 1..n entities
+             var selectedIDs = context.selectedIDs().filter(function (id) {
+               return context.hasEntity(id);
+             });
+             var selected = selectedIDs.map(function (id) {
+               return context.entity(id);
+             });
+             heading = selected.length === 1 ? selected[0].id : _t('info_panels.selected', {
+               n: selected.length
+             });

 
 

-       try {
-         if (Object.defineProperty) {
-           var getTextContent = function getTextContent(node) {
-             switch (node.nodeType) {
-               case ELEMENT_NODE:
-               case DOCUMENT_FRAGMENT_NODE:
-                 var buf = [];
-                 node = node.firstChild;
-
-                 while (node) {
-                   if (node.nodeType !== 7 && node.nodeType !== 8) {
-                     buf.push(getTextContent(node));
-                   }
+             if (selected.length) {
+               var extent = geoExtent();

 
 

-                   node = node.nextSibling;
-                 }
+               for (var i in selected) {
+                 var entity = selected[i];

 
 

-                 return buf.join('');
+                 extent._extend(entity.extent(graph));

 
 

-               default:
-                 return node.nodeValue;
-             }
-           };
+                 geometry = entity.geometry(graph);

 
 

-           Object.defineProperty(LiveNodeList.prototype, 'length', {
-             get: function get() {
-               _updateLiveList(this);
+                 if (geometry === 'line' || geometry === 'area') {
+                   closed = entity.type === 'relation' || entity.isClosed() && !entity.isDegenerate();
+                   var feature = entity.asGeoJSON(graph);
+                   length += radiansToMeters(d3_geoLength(toLineString(feature)));
+                   centroid = d3_geoPath(context.projection).centroid(entity.asGeoJSON(graph));
+                   centroid = centroid && context.projection.invert(centroid);

 
 

-               return this.$$length;
-             }
-           });
-           Object.defineProperty(Node.prototype, 'textContent', {
-             get: function get() {
-               return getTextContent(this);
-             },
-             set: function set(data) {
-               switch (this.nodeType) {
-                 case ELEMENT_NODE:
-                 case DOCUMENT_FRAGMENT_NODE:
-                   while (this.firstChild) {
-                     this.removeChild(this.firstChild);
+                   if (!centroid || !isFinite(centroid[0]) || !isFinite(centroid[1])) {
+                     centroid = entity.extent(graph).center();

                    }
 
                    }
 

-                   if (data || String(data)) {
-                     this.appendChild(this.ownerDocument.createTextNode(data));
+                   if (closed) {
+                     area += steradiansToSqmeters(entity.area(graph));

                    }
                    }

+                 }
+               }

 
 

-                   break;
-
-                 default:
-                   //TODO:
-                   this.data = data;
-                   this.value = data;
-                   this.nodeValue = data;
+               if (selected.length > 1) {
+                 geometry = null;
+                 closed = null;
+                 centroid = null;

                }
                }

-             }
-           });

 
 

-           __set__ = function __set__(object, key, value) {
-             //console.log(value)
-             object['$$' + key] = value;
-           };
-         }
-       } catch (e) {//ie8
-       } //if(typeof require == 'function'){
+               if (selected.length === 2 && selected[0].type === 'node' && selected[1].type === 'node') {
+                 distance = geoSphericalDistance(selected[0].loc, selected[1].loc);
+               }

 
 

+               if (selected.length === 1 && selected[0].type === 'node') {
+                 location = selected[0].loc;
+               } else {
+                 totalNodeCount = utilGetAllNodes(selectedIDs, context.graph()).length;
+               }

 
 

-       var DOMImplementation_1 = DOMImplementation;
-       var XMLSerializer_1 = XMLSerializer$1; //}
+               if (!location && !centroid) {
+                 center = extent.center();
+               }
+             }
+           }

 
 

-       var dom = {
-         DOMImplementation: DOMImplementation_1,
-         XMLSerializer: XMLSerializer_1
-       };
+           selection.html('');

 
 

-       var domParser = createCommonjsModule(function (module, exports) {
-         function DOMParser(options) {
-           this.options = options || {
-             locator: {}
-           };
-         }
+           if (heading) {
+             selection.append('h4').attr('class', 'measurement-heading').html(heading);
+           }

 
 

-         DOMParser.prototype.parseFromString = function (source, mimeType) {
-           var options = this.options;
-           var sax = new XMLReader();
-           var domBuilder = options.domBuilder || new DOMHandler(); //contentHandler and LexicalHandler
-
-           var errorHandler = options.errorHandler;
-           var locator = options.locator;
-           var defaultNSMap = options.xmlns || {};
-           var entityMap = {
-             'lt': '<',
-             'gt': '>',
-             'amp': '&',
-             'quot': '"',
-             'apos': "'"
-           };
+           var list = selection.append('ul');
+           var coordItem;

 
 

-           if (locator) {
-             domBuilder.setDocumentLocator(locator);
+           if (geometry) {
+             list.append('li').html(_t.html('info_panels.measurement.geometry') + ':').append('span').html(closed ? _t('info_panels.measurement.closed_' + geometry) : _t('geometry.' + geometry));

            }
 
            }
 

-           sax.errorHandler = buildErrorHandler(errorHandler, domBuilder, locator);
-           sax.domBuilder = options.domBuilder || domBuilder;
-
-           if (/\/x?html?$/.test(mimeType)) {
-             entityMap.nbsp = '\xa0';
-             entityMap.copy = '\xa9';
-             defaultNSMap[''] = 'http://www.w3.org/1999/xhtml';
+           if (totalNodeCount) {
+             list.append('li').html(_t.html('info_panels.measurement.node_count') + ':').append('span').html(totalNodeCount.toLocaleString(localeCode));

            }
 
            }
 

-           defaultNSMap.xml = defaultNSMap.xml || 'http://www.w3.org/XML/1998/namespace';
+           if (area) {
+             list.append('li').html(_t.html('info_panels.measurement.area') + ':').append('span').html(displayArea(area, _isImperial));
+           }

 
 

-           if (source) {
-             sax.parse(source, defaultNSMap, entityMap);
-           } else {
-             sax.errorHandler.error("invalid doc source");
+           if (length) {
+             list.append('li').html(_t.html('info_panels.measurement.' + (closed ? 'perimeter' : 'length')) + ':').append('span').html(displayLength(length, _isImperial));

            }
 
            }
 

-           return domBuilder.doc;
-         };
+           if (typeof distance === 'number') {
+             list.append('li').html(_t.html('info_panels.measurement.distance') + ':').append('span').html(displayLength(distance, _isImperial));
+           }

 
 

-         function buildErrorHandler(errorImpl, domBuilder, locator) {
-           if (!errorImpl) {
-             if (domBuilder instanceof DOMHandler) {
-               return domBuilder;
-             }
+           if (location) {
+             coordItem = list.append('li').html(_t.html('info_panels.measurement.location') + ':');
+             coordItem.append('span').html(dmsCoordinatePair(location));
+             coordItem.append('span').html(decimalCoordinatePair(location));
+           }

 
 

-             errorImpl = domBuilder;
+           if (centroid) {
+             coordItem = list.append('li').html(_t.html('info_panels.measurement.centroid') + ':');
+             coordItem.append('span').html(dmsCoordinatePair(centroid));
+             coordItem.append('span').html(decimalCoordinatePair(centroid));

            }
 
            }
 

-           var errorHandler = {};
-           var isCallback = errorImpl instanceof Function;
-           locator = locator || {};
+           if (center) {
+             coordItem = list.append('li').html(_t.html('info_panels.measurement.center') + ':');
+             coordItem.append('span').html(dmsCoordinatePair(center));
+             coordItem.append('span').html(decimalCoordinatePair(center));
+           }

 
 

-           function build(key) {
-             var fn = errorImpl[key];
+           if (length || area || typeof distance === 'number') {
+             var toggle = _isImperial ? 'imperial' : 'metric';
+             selection.append('a').html(_t.html('info_panels.measurement.' + toggle)).attr('href', '#').attr('class', 'button button-toggle-units').on('click', function (d3_event) {
+               d3_event.preventDefault();
+               _isImperial = !_isImperial;
+               selection.call(redraw);
+             });
+           }
+         }

 
 

-             if (!fn && isCallback) {
-               fn = errorImpl.length == 2 ? function (msg) {
-                 errorImpl(key, msg);
-               } : errorImpl;
-             }
+         var panel = function panel(selection) {
+           selection.call(redraw);
+           context.map().on('drawn.info-measurement', function () {
+             selection.call(redraw);
+           });
+           context.on('enter.info-measurement', function () {
+             selection.call(redraw);
+           });
+         };

 
 

-             errorHandler[key] = fn && function (msg) {
-               fn('[xmldom ' + key + ']\t' + msg + _locator(locator));
-             } || function () {};
-           }
+         panel.off = function () {
+           context.map().on('drawn.info-measurement', null);
+           context.on('enter.info-measurement', null);
+         };

 
 

-           build('warning');
-           build('error');
-           build('fatalError');
-           return errorHandler;
-         } //console.log('#\n\n\n\n\n\n\n####')
+         panel.id = 'measurement';
+         panel.label = _t.html('info_panels.measurement.title');
+         panel.key = _t('info_panels.measurement.key');
+         return panel;
+       }

 
 

-         /**
-          * +ContentHandler+ErrorHandler
-          * +LexicalHandler+EntityResolver2
-          * -DeclHandler-DTDHandler 
-          * 
-          * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
-          * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
-          */
+       var uiInfoPanels = {
+         background: uiPanelBackground,
+         history: uiPanelHistory,
+         location: uiPanelLocation,
+         measurement: uiPanelMeasurement
+       };

 
 

+       function uiInfo(context) {
+         var ids = Object.keys(uiInfoPanels);
+         var wasActive = ['measurement'];
+         var panels = {};
+         var active = {}; // create panels

 
 

-         function DOMHandler() {
-           this.cdata = false;
-         }
+         ids.forEach(function (k) {
+           if (!panels[k]) {
+             panels[k] = uiInfoPanels[k](context);
+             active[k] = false;
+           }
+         });

 
 

-         function position(locator, node) {
-           node.lineNumber = locator.lineNumber;
-           node.columnNumber = locator.columnNumber;
-         }
-         /**
-          * @see org.xml.sax.ContentHandler#startDocument
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
-          */
+         function info(selection) {
+           function redraw() {
+             var activeids = ids.filter(function (k) {
+               return active[k];
+             }).sort();
+             var containers = infoPanels.selectAll('.panel-container').data(activeids, function (k) {
+               return k;
+             });
+             containers.exit().style('opacity', 1).transition().duration(200).style('opacity', 0).on('end', function (d) {
+               select(this).call(panels[d].off).remove();
+             });
+             var enter = containers.enter().append('div').attr('class', function (d) {
+               return 'fillD2 panel-container panel-container-' + d;
+             });
+             enter.style('opacity', 0).transition().duration(200).style('opacity', 1);
+             var title = enter.append('div').attr('class', 'panel-title fillD2');
+             title.append('h3').html(function (d) {
+               return panels[d].label;
+             });
+             title.append('button').attr('class', 'close').on('click', function (d3_event, d) {
+               d3_event.stopImmediatePropagation();
+               d3_event.preventDefault();
+               info.toggle(d);
+             }).call(svgIcon('#iD-icon-close'));
+             enter.append('div').attr('class', function (d) {
+               return 'panel-content panel-content-' + d;
+             }); // redraw the panels

 
 

+             infoPanels.selectAll('.panel-content').each(function (d) {
+               select(this).call(panels[d]);
+             });
+           }

 
 

-         DOMHandler.prototype = {
-           startDocument: function startDocument() {
-             this.doc = new DOMImplementation().createDocument(null, null, null);
+           info.toggle = function (which) {
+             var activeids = ids.filter(function (k) {
+               return active[k];
+             });

 
 

-             if (this.locator) {
-               this.doc.documentURI = this.locator.systemId;
-             }
-           },
-           startElement: function startElement(namespaceURI, localName, qName, attrs) {
-             var doc = this.doc;
-             var el = doc.createElementNS(namespaceURI, qName || localName);
-             var len = attrs.length;
-             appendElement(this, el);
-             this.currentElement = el;
-             this.locator && position(this.locator, el);
-
-             for (var i = 0; i < len; i++) {
-               var namespaceURI = attrs.getURI(i);
-               var value = attrs.getValue(i);
-               var qName = attrs.getQName(i);
-               var attr = doc.createAttributeNS(namespaceURI, qName);
-               this.locator && position(attrs.getLocator(i), attr);
-               attr.value = attr.nodeValue = value;
-               el.setAttributeNode(attr);
-             }
-           },
-           endElement: function endElement(namespaceURI, localName, qName) {
-             var current = this.currentElement;
-             var tagName = current.tagName;
-             this.currentElement = current.parentNode;
-           },
-           startPrefixMapping: function startPrefixMapping(prefix, uri) {},
-           endPrefixMapping: function endPrefixMapping(prefix) {},
-           processingInstruction: function processingInstruction(target, data) {
-             var ins = this.doc.createProcessingInstruction(target, data);
-             this.locator && position(this.locator, ins);
-             appendElement(this, ins);
-           },
-           ignorableWhitespace: function ignorableWhitespace(ch, start, length) {},
-           characters: function characters(chars, start, length) {
-             chars = _toString.apply(this, arguments); //console.log(chars)
+             if (which) {
+               // toggle one
+               active[which] = !active[which];

 
 

-             if (chars) {
-               if (this.cdata) {
-                 var charNode = this.doc.createCDATASection(chars);
-               } else {
-                 var charNode = this.doc.createTextNode(chars);
+               if (activeids.length === 1 && activeids[0] === which) {
+                 // none active anymore
+                 wasActive = [which];

                }
 
                }
 

-               if (this.currentElement) {
-                 this.currentElement.appendChild(charNode);
-               } else if (/^\s*$/.test(chars)) {
-                 this.doc.appendChild(charNode); //process xml
+               context.container().select('.' + which + '-panel-toggle-item').classed('active', active[which]).select('input').property('checked', active[which]);
+             } else {
+               // toggle all
+               if (activeids.length) {
+                 wasActive = activeids;
+                 activeids.forEach(function (k) {
+                   active[k] = false;
+                 });
+               } else {
+                 wasActive.forEach(function (k) {
+                   active[k] = true;
+                 });

                }
                }

-
-               this.locator && position(this.locator, charNode);
-             }
-           },
-           skippedEntity: function skippedEntity(name) {},
-           endDocument: function endDocument() {
-             this.doc.normalize();
-           },
-           setDocumentLocator: function setDocumentLocator(locator) {
-             if (this.locator = locator) {
-               // && !('lineNumber' in locator)){
-               locator.lineNumber = 0;
-             }
-           },
-           //LexicalHandler
-           comment: function comment(chars, start, length) {
-             chars = _toString.apply(this, arguments);
-             var comm = this.doc.createComment(chars);
-             this.locator && position(this.locator, comm);
-             appendElement(this, comm);
-           },
-           startCDATA: function startCDATA() {
-             //used in characters() methods
-             this.cdata = true;
-           },
-           endCDATA: function endCDATA() {
-             this.cdata = false;
-           },
-           startDTD: function startDTD(name, publicId, systemId) {
-             var impl = this.doc.implementation;
-
-             if (impl && impl.createDocumentType) {
-               var dt = impl.createDocumentType(name, publicId, systemId);
-               this.locator && position(this.locator, dt);
-               appendElement(this, dt);

              }
              }

-           },

 
 

-           /**
-            * @see org.xml.sax.ErrorHandler
-            * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
-            */
-           warning: function warning(error) {
-             console.warn('[xmldom warning]\t' + error, _locator(this.locator));
-           },
-           error: function error(_error) {
-             console.error('[xmldom error]\t' + _error, _locator(this.locator));
-           },
-           fatalError: function fatalError(error) {
-             console.error('[xmldom fatalError]\t' + error, _locator(this.locator));
-             throw error;
-           }
-         };
+             redraw();
+           };

 
 

-         function _locator(l) {
-           if (l) {
-             return '\n@' + (l.systemId || '') + '#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';
-           }
+           var infoPanels = selection.selectAll('.info-panels').data([0]);
+           infoPanels = infoPanels.enter().append('div').attr('class', 'info-panels').merge(infoPanels);
+           redraw();
+           context.keybinding().on(uiCmd('⌘' + _t('info_panels.key')), function (d3_event) {
+             d3_event.stopImmediatePropagation();
+             d3_event.preventDefault();
+             info.toggle();
+           });
+           ids.forEach(function (k) {
+             var key = _t('info_panels.' + k + '.key', {
+               "default": null
+             });
+             if (!key) return;
+             context.keybinding().on(uiCmd('⌘⇧' + key), function (d3_event) {
+               d3_event.stopImmediatePropagation();
+               d3_event.preventDefault();
+               info.toggle(k);
+             });
+           });

          }
 
          }
 

-         function _toString(chars, start, length) {
-           if (typeof chars == 'string') {
-             return chars.substr(start, length);
-           } else {
-             //java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
-             if (chars.length >= start + length || start) {
-               return new java.lang.String(chars, start, length) + '';
-             }
-
-             return chars;
-           }
-         }
-         /*
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
-          * used method of org.xml.sax.ext.LexicalHandler:
-          *  #comment(chars, start, length)
-          *  #startCDATA()
-          *  #endCDATA()
-          *  #startDTD(name, publicId, systemId)
-          *
-          *
-          * IGNORED method of org.xml.sax.ext.LexicalHandler:
-          *  #endDTD()
-          *  #startEntity(name)
-          *  #endEntity(name)
-          *
-          *
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
-          * IGNORED method of org.xml.sax.ext.DeclHandler
-          *    #attributeDecl(eName, aName, type, mode, value)
-          *  #elementDecl(name, model)
-          *  #externalEntityDecl(name, publicId, systemId)
-          *  #internalEntityDecl(name, value)
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
-          * IGNORED method of org.xml.sax.EntityResolver2
-          *  #resolveEntity(String name,String publicId,String baseURI,String systemId)
-          *  #resolveEntity(publicId, systemId)
-          *  #getExternalSubset(name, baseURI)
-          * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
-          * IGNORED method of org.xml.sax.DTDHandler
-          *  #notationDecl(name, publicId, systemId) {};
-          *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};
-          */
+         return info;
+       }

 
 

+       function pointBox(loc, context) {
+         var rect = context.surfaceRect();
+         var point = context.curtainProjection(loc);
+         return {
+           left: point[0] + rect.left - 40,
+           top: point[1] + rect.top - 60,
+           width: 80,
+           height: 90
+         };
+       }
+       function pad(locOrBox, padding, context) {
+         var box;

 
 

-         "endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g, function (key) {
-           DOMHandler.prototype[key] = function () {
-             return null;
+         if (locOrBox instanceof Array) {
+           var rect = context.surfaceRect();
+           var point = context.curtainProjection(locOrBox);
+           box = {
+             left: point[0] + rect.left,
+             top: point[1] + rect.top

            };
            };

-         });
-         /* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
-
-         function appendElement(hander, node) {
-           if (!hander.currentElement) {
-             hander.doc.appendChild(node);
-           } else {
-             hander.currentElement.appendChild(node);
-           }
-         } //appendChild and setAttributeNS are preformance key
-         //if(typeof require == 'function'){
-
-
-         var XMLReader = sax.XMLReader;
-         var DOMImplementation = exports.DOMImplementation = dom.DOMImplementation;
-         exports.XMLSerializer = dom.XMLSerializer;
-         exports.DOMParser = DOMParser; //}
-       });
-
-       var togeojson = createCommonjsModule(function (module, exports) {
-         var toGeoJSON = function () {
+         } else {
+           box = locOrBox;
+         }

 
 

-           var removeSpace = /\s*/g,
-               trimSpace = /^\s*|\s*$/g,
-               splitSpace = /\s+/; // generate a short, numeric hash of a string
+         return {
+           left: box.left - padding,
+           top: box.top - padding,
+           width: (box.width || 0) + 2 * padding,
+           height: (box.width || 0) + 2 * padding
+         };
+       }
+       function icon(name, svgklass, useklass) {
+         return '<svg class="icon ' + (svgklass || '') + '">' + '<use xlink:href="' + name + '"' + (useklass ? ' class="' + useklass + '"' : '') + '></use></svg>';
+       }
+       var helpStringReplacements; // Returns the localized HTML element for `id` with a standardized set of icon, key, and
+       // label replacements suitable for tutorials and documentation. Optionally supplemented
+       // with custom `replacements`

 
 

-           function okhash(x) {
-             if (!x || !x.length) return 0;
+       function helpHtml(id, replacements) {
+         // only load these the first time
+         if (!helpStringReplacements) {
+           helpStringReplacements = {
+             // insert icons corresponding to various UI elements
+             point_icon: icon('#iD-icon-point', 'inline'),
+             line_icon: icon('#iD-icon-line', 'inline'),
+             area_icon: icon('#iD-icon-area', 'inline'),
+             note_icon: icon('#iD-icon-note', 'inline add-note'),
+             plus: icon('#iD-icon-plus', 'inline'),
+             minus: icon('#iD-icon-minus', 'inline'),
+             layers_icon: icon('#iD-icon-layers', 'inline'),
+             data_icon: icon('#iD-icon-data', 'inline'),
+             inspect: icon('#iD-icon-inspect', 'inline'),
+             help_icon: icon('#iD-icon-help', 'inline'),
+             undo_icon: icon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-redo' : '#iD-icon-undo', 'inline'),
+             redo_icon: icon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-undo' : '#iD-icon-redo', 'inline'),
+             save_icon: icon('#iD-icon-save', 'inline'),
+             // operation icons
+             circularize_icon: icon('#iD-operation-circularize', 'inline operation'),
+             continue_icon: icon('#iD-operation-continue', 'inline operation'),
+             copy_icon: icon('#iD-operation-copy', 'inline operation'),
+             delete_icon: icon('#iD-operation-delete', 'inline operation'),
+             disconnect_icon: icon('#iD-operation-disconnect', 'inline operation'),
+             downgrade_icon: icon('#iD-operation-downgrade', 'inline operation'),
+             extract_icon: icon('#iD-operation-extract', 'inline operation'),
+             merge_icon: icon('#iD-operation-merge', 'inline operation'),
+             move_icon: icon('#iD-operation-move', 'inline operation'),
+             orthogonalize_icon: icon('#iD-operation-orthogonalize', 'inline operation'),
+             paste_icon: icon('#iD-operation-paste', 'inline operation'),
+             reflect_long_icon: icon('#iD-operation-reflect-long', 'inline operation'),
+             reflect_short_icon: icon('#iD-operation-reflect-short', 'inline operation'),
+             reverse_icon: icon('#iD-operation-reverse', 'inline operation'),
+             rotate_icon: icon('#iD-operation-rotate', 'inline operation'),
+             split_icon: icon('#iD-operation-split', 'inline operation'),
+             straighten_icon: icon('#iD-operation-straighten', 'inline operation'),
+             // interaction icons
+             leftclick: icon('#iD-walkthrough-mouse-left', 'inline operation'),
+             rightclick: icon('#iD-walkthrough-mouse-right', 'inline operation'),
+             mousewheel_icon: icon('#iD-walkthrough-mousewheel', 'inline operation'),
+             tap_icon: icon('#iD-walkthrough-tap', 'inline operation'),
+             doubletap_icon: icon('#iD-walkthrough-doubletap', 'inline operation'),
+             longpress_icon: icon('#iD-walkthrough-longpress', 'inline operation'),
+             touchdrag_icon: icon('#iD-walkthrough-touchdrag', 'inline operation'),
+             pinch_icon: icon('#iD-walkthrough-pinch-apart', 'inline operation'),
+             // insert keys; may be localized and platform-dependent
+             shift: uiCmd.display('⇧'),
+             alt: uiCmd.display('⌥'),
+             "return": uiCmd.display('↵'),
+             esc: _t.html('shortcuts.key.esc'),
+             space: _t.html('shortcuts.key.space'),
+             add_note_key: _t.html('modes.add_note.key'),
+             help_key: _t.html('help.key'),
+             shortcuts_key: _t.html('shortcuts.toggle.key'),
+             // reference localized UI labels directly so that they'll always match
+             save: _t.html('save.title'),
+             undo: _t.html('undo.title'),
+             redo: _t.html('redo.title'),
+             upload: _t.html('commit.save'),
+             point: _t.html('modes.add_point.title'),
+             line: _t.html('modes.add_line.title'),
+             area: _t.html('modes.add_area.title'),
+             note: _t.html('modes.add_note.label'),
+             circularize: _t.html('operations.circularize.title'),
+             "continue": _t.html('operations.continue.title'),
+             copy: _t.html('operations.copy.title'),
+             "delete": _t.html('operations.delete.title'),
+             disconnect: _t.html('operations.disconnect.title'),
+             downgrade: _t.html('operations.downgrade.title'),
+             extract: _t.html('operations.extract.title'),
+             merge: _t.html('operations.merge.title'),
+             move: _t.html('operations.move.title'),
+             orthogonalize: _t.html('operations.orthogonalize.title'),
+             paste: _t.html('operations.paste.title'),
+             reflect_long: _t.html('operations.reflect.title.long'),
+             reflect_short: _t.html('operations.reflect.title.short'),
+             reverse: _t.html('operations.reverse.title'),
+             rotate: _t.html('operations.rotate.title'),
+             split: _t.html('operations.split.title'),
+             straighten: _t.html('operations.straighten.title'),
+             map_data: _t.html('map_data.title'),
+             osm_notes: _t.html('map_data.layers.notes.title'),
+             fields: _t.html('inspector.fields'),
+             tags: _t.html('inspector.tags'),
+             relations: _t.html('inspector.relations'),
+             new_relation: _t.html('inspector.new_relation'),
+             turn_restrictions: _t.html('_tagging.presets.fields.restrictions.label'),
+             background_settings: _t.html('background.description'),
+             imagery_offset: _t.html('background.fix_misalignment'),
+             start_the_walkthrough: _t.html('splash.walkthrough'),
+             help: _t.html('help.title'),
+             ok: _t.html('intro.ok')
+           };
+         }

 
 

-             for (var i = 0, h = 0; i < x.length; i++) {
-               h = (h << 5) - h + x.charCodeAt(i) | 0;
-             }
+         var reps;

 
 

-             return h;
-           } // all Y children of X
+         if (replacements) {
+           reps = Object.assign(replacements, helpStringReplacements);
+         } else {
+           reps = helpStringReplacements;
+         }

 
 

+         return _t.html(id, reps) // use keyboard key styling for shortcuts
+         .replace(/\`(.*?)\`/g, '<kbd>$1</kbd>');
+       }

 
 

-           function get(x, y) {
-             return x.getElementsByTagName(y);
-           }
+       function slugify(text) {
+         return text.toString().toLowerCase().replace(/\s+/g, '-') // Replace spaces with -
+         .replace(/[^\w\-]+/g, '') // Remove all non-word chars
+         .replace(/\-\-+/g, '-') // Replace multiple - with single -
+         .replace(/^-+/, '') // Trim - from start of text
+         .replace(/-+$/, ''); // Trim - from end of text
+       } // console warning for missing walkthrough names

 
 

-           function attr(x, y) {
-             return x.getAttribute(y);
-           }

 
 

-           function attrf(x, y) {
-             return parseFloat(attr(x, y));
-           } // one Y child of X, if any, otherwise null
+       var missingStrings = {};

 
 

+       function checkKey(key, text) {
+         if (_t(key, {
+           "default": undefined
+         }) === undefined) {
+           if (missingStrings.hasOwnProperty(key)) return; // warn once

 
 

-           function get1(x, y) {
-             var n = get(x, y);
-             return n.length ? n[0] : null;
-           } // https://developer.mozilla.org/en-US/docs/Web/API/Node.normalize
+           missingStrings[key] = text;
+           var missing = key + ': ' + text;
+           if (typeof console !== 'undefined') console.log(missing); // eslint-disable-line
+         }
+       }

 
 

+       function localize(obj) {
+         var key; // Assign name if entity has one..

 
 

-           function norm(el) {
-             if (el.normalize) {
-               el.normalize();
-             }
+         var name = obj.tags && obj.tags.name;

 
 

-             return el;
-           } // cast array x into numbers
+         if (name) {
+           key = 'intro.graph.name.' + slugify(name);
+           obj.tags.name = _t(key, {
+             "default": name
+           });
+           checkKey(key, name);
+         } // Assign street name if entity has one..

 
 
 
 

-           function numarray(x) {
-             for (var j = 0, o = []; j < x.length; j++) {
-               o[j] = parseFloat(x[j]);
-             }
+         var street = obj.tags && obj.tags['addr:street'];

 
 

-             return o;
-           } // get the content of a text node, if any
+         if (street) {
+           key = 'intro.graph.name.' + slugify(street);
+           obj.tags['addr:street'] = _t(key, {
+             "default": street
+           });
+           checkKey(key, street); // Add address details common across walkthrough..

 
 

+           var addrTags = ['block_number', 'city', 'county', 'district', 'hamlet', 'neighbourhood', 'postcode', 'province', 'quarter', 'state', 'subdistrict', 'suburb'];
+           addrTags.forEach(function (k) {
+             var key = 'intro.graph.' + k;
+             var tag = 'addr:' + k;
+             var val = obj.tags && obj.tags[tag];
+             var str = _t(key, {
+               "default": val
+             });

 
 

-           function nodeVal(x) {
-             if (x) {
-               norm(x);
+             if (str) {
+               if (str.match(/^<.*>$/) !== null) {
+                 delete obj.tags[tag];
+               } else {
+                 obj.tags[tag] = str;
+               }

              }
              }

+           });
+         }

 
 

-             return x && x.textContent || '';
-           } // get the contents of multiple text nodes, if present
+         return obj;
+       } // Used to detect squareness.. some duplicataion of code from actionOrthogonalize.

 
 

+       function isMostlySquare(points) {
+         // note: uses 15 here instead of the 12 from actionOrthogonalize because
+         // actionOrthogonalize can actually straighten some larger angles as it iterates
+         var threshold = 15; // degrees within right or straight

 
 

-           function getMulti(x, ys) {
-             var o = {},
-                 n,
-                 k;
+         var lowerBound = Math.cos((90 - threshold) * Math.PI / 180); // near right

 
 

-             for (k = 0; k < ys.length; k++) {
-               n = get1(x, ys[k]);
-               if (n) o[ys[k]] = nodeVal(n);
-             }
+         var upperBound = Math.cos(threshold * Math.PI / 180); // near straight

 
 

-             return o;
-           } // add properties of Y to X, overwriting if present in both
+         for (var i = 0; i < points.length; i++) {
+           var a = points[(i - 1 + points.length) % points.length];
+           var origin = points[i];
+           var b = points[(i + 1) % points.length];
+           var dotp = geoVecNormalizedDot(a, b, origin);
+           var mag = Math.abs(dotp);

 
 

+           if (mag > lowerBound && mag < upperBound) {
+             return false;
+           }
+         }

 
 

-           function extend(x, y) {
-             for (var k in y) {
-               x[k] = y[k];
-             }
-           } // get one coordinate from a coordinate array, if any
+         return true;
+       }
+       function selectMenuItem(context, operation) {
+         return context.container().select('.edit-menu .edit-menu-item-' + operation);
+       }
+       function transitionTime(point1, point2) {
+         var distance = geoSphericalDistance(point1, point2);

 
 

+         if (distance === 0) {
+           return 0;
+         } else if (distance < 80) {
+           return 500;
+         } else {
+           return 1000;
+         }
+       }

 
 

-           function coord1(v) {
-             return numarray(v.replace(removeSpace, '').split(','));
-           } // get all coordinates from a coordinate array as [[],[]]
+       // hide class, which sets display=none, and a d3 transition for opacity.
+       // this will cause blinking when called repeatedly, so check that the
+       // value actually changes between calls.

 
 

+       function uiToggle(show, callback) {
+         return function (selection) {
+           selection.style('opacity', show ? 0 : 1).classed('hide', false).transition().style('opacity', show ? 1 : 0).on('end', function () {
+             select(this).classed('hide', !show).style('opacity', null);
+             if (callback) callback.apply(this);
+           });
+         };
+       }

 
 

-           function coord(v) {
-             var coords = v.replace(trimSpace, '').split(splitSpace),
-                 o = [];
+       function uiCurtain(containerNode) {
+         var surface = select(null),
+             tooltip = select(null),
+             darkness = select(null);

 
 

-             for (var i = 0; i < coords.length; i++) {
-               o.push(coord1(coords[i]));
-             }
+         function curtain(selection) {
+           surface = selection.append('svg').attr('class', 'curtain').style('top', 0).style('left', 0);
+           darkness = surface.append('path').attr('x', 0).attr('y', 0).attr('class', 'curtain-darkness');
+           select(window).on('resize.curtain', resize);
+           tooltip = selection.append('div').attr('class', 'tooltip');
+           tooltip.append('div').attr('class', 'popover-arrow');
+           tooltip.append('div').attr('class', 'popover-inner');
+           resize();

 
 

-             return o;
+           function resize() {
+             surface.attr('width', containerNode.clientWidth).attr('height', containerNode.clientHeight);
+             curtain.cut(darkness.datum());

            }
            }

+         }
+         /**
+          * Reveal cuts the curtain to highlight the given box,
+          * and shows a tooltip with instructions next to the box.
+          *
+          * @param  {String|ClientRect} [box]   box used to cut the curtain
+          * @param  {String}    [text]          text for a tooltip
+          * @param  {Object}    [options]
+          * @param  {string}    [options.tooltipClass]    optional class to add to the tooltip
+          * @param  {integer}   [options.duration]        transition time in milliseconds
+          * @param  {string}    [options.buttonText]      if set, create a button with this text label
+          * @param  {function}  [options.buttonCallback]  if set, the callback for the button
+          * @param  {function}  [options.padding]         extra margin in px to put around bbox
+          * @param  {String|ClientRect} [options.tooltipBox]  box for tooltip position, if different from box for the curtain
+          */

 
 

-           function coordPair(x) {
-             var ll = [attrf(x, 'lon'), attrf(x, 'lat')],
-                 ele = get1(x, 'ele'),
-                 // handle namespaced attribute in browser
-             heartRate = get1(x, 'gpxtpx:hr') || get1(x, 'hr'),
-                 time = get1(x, 'time'),
-                 e;
-
-             if (ele) {
-               e = parseFloat(nodeVal(ele));
-
-               if (!isNaN(e)) {
-                 ll.push(e);
-               }
-             }
-
-             return {
-               coordinates: ll,
-               time: time ? nodeVal(time) : null,
-               heartRate: heartRate ? parseFloat(nodeVal(heartRate)) : null
-             };
-           } // create a new feature collection parent object

 
 

+         curtain.reveal = function (box, html, options) {
+           options = options || {};

 
 

-           function fc() {
-             return {
-               type: 'FeatureCollection',
-               features: []
-             };
+           if (typeof box === 'string') {
+             box = select(box).node();

            }
 
            }
 

-           var serializer;
-
-           if (typeof XMLSerializer !== 'undefined') {
-             /* istanbul ignore next */
-             serializer = new XMLSerializer(); // only require xmldom in a node environment
-           } else if ( (typeof process === "undefined" ? "undefined" : _typeof(process)) === 'object' && !process.browser) {
-             serializer = new domParser.XMLSerializer();
+           if (box && box.getBoundingClientRect) {
+             box = copyBox(box.getBoundingClientRect());
+             var containerRect = containerNode.getBoundingClientRect();
+             box.top -= containerRect.top;
+             box.left -= containerRect.left;

            }
 
            }
 

-           function xml2str(str) {
-             // IE9 will create a new XMLSerializer but it'll crash immediately.
-             // This line is ignored because we don't run coverage tests in IE9
-
-             /* istanbul ignore next */
-             if (str.xml !== undefined) return str.xml;
-             return serializer.serializeToString(str);
+           if (box && options.padding) {
+             box.top -= options.padding;
+             box.left -= options.padding;
+             box.bottom += options.padding;
+             box.right += options.padding;
+             box.height += options.padding * 2;
+             box.width += options.padding * 2;

            }
 
            }
 

-           var t = {
-             kml: function kml(doc) {
-               var gj = fc(),
-                   // styleindex keeps track of hashed styles in order to match features
-               styleIndex = {},
-                   styleByHash = {},
-                   // stylemapindex keeps track of style maps to expose in properties
-               styleMapIndex = {},
-                   // atomic geospatial types supported by KML - MultiGeometry is
-               // handled separately
-               geotypes = ['Polygon', 'LineString', 'Point', 'Track', 'gx:Track'],
-                   // all root placemarks in the file
-               placemarks = get(doc, 'Placemark'),
-                   styles = get(doc, 'Style'),
-                   styleMaps = get(doc, 'StyleMap');
-
-               for (var k = 0; k < styles.length; k++) {
-                 var hash = okhash(xml2str(styles[k])).toString(16);
-                 styleIndex['#' + attr(styles[k], 'id')] = hash;
-                 styleByHash[hash] = styles[k];
-               }
+           var tooltipBox;

 
 

-               for (var l = 0; l < styleMaps.length; l++) {
-                 styleIndex['#' + attr(styleMaps[l], 'id')] = okhash(xml2str(styleMaps[l])).toString(16);
-                 var pairs = get(styleMaps[l], 'Pair');
-                 var pairsMap = {};
+           if (options.tooltipBox) {
+             tooltipBox = options.tooltipBox;

 
 

-                 for (var m = 0; m < pairs.length; m++) {
-                   pairsMap[nodeVal(get1(pairs[m], 'key'))] = nodeVal(get1(pairs[m], 'styleUrl'));
-                 }
+             if (typeof tooltipBox === 'string') {
+               tooltipBox = select(tooltipBox).node();
+             }

 
 

-                 styleMapIndex['#' + attr(styleMaps[l], 'id')] = pairsMap;
-               }
+             if (tooltipBox && tooltipBox.getBoundingClientRect) {
+               tooltipBox = copyBox(tooltipBox.getBoundingClientRect());
+             }
+           } else {
+             tooltipBox = box;
+           }

 
 

-               for (var j = 0; j < placemarks.length; j++) {
-                 gj.features = gj.features.concat(getPlacemark(placemarks[j]));
-               }
+           if (tooltipBox && html) {
+             if (html.indexOf('**') !== -1) {
+               if (html.indexOf('<span') === 0) {
+                 html = html.replace(/^(<span.*?>)(.+?)(\*\*)/, '$1<span>$2</span>$3');
+               } else {
+                 html = html.replace(/^(.+?)(\*\*)/, '<span>$1</span>$2');
+               } // pseudo markdown bold text for the instruction section..

 
 

-               function kmlColor(v) {
-                 var color, opacity;
-                 v = v || '';

 
 

-                 if (v.substr(0, 1) === '#') {
-                   v = v.substr(1);
-                 }
+               html = html.replace(/\*\*(.*?)\*\*/g, '<span class="instruction">$1</span>');
+             }

 
 

-                 if (v.length === 6 || v.length === 3) {
-                   color = v;
-                 }
+             html = html.replace(/\*(.*?)\*/g, '<em>$1</em>'); // emphasis

 
 

-                 if (v.length === 8) {
-                   opacity = parseInt(v.substr(0, 2), 16) / 255;
-                   color = '#' + v.substr(6, 2) + v.substr(4, 2) + v.substr(2, 2);
-                 }
+             html = html.replace(/\{br\}/g, '<br/><br/>'); // linebreak

 
 

-                 return [color, isNaN(opacity) ? undefined : opacity];
-               }
+             if (options.buttonText && options.buttonCallback) {
+               html += '<div class="button-section">' + '<button href="#" class="button action">' + options.buttonText + '</button></div>';
+             }

 
 

-               function gxCoord(v) {
-                 return numarray(v.split(' '));
-               }
+             var classes = 'curtain-tooltip popover tooltip arrowed in ' + (options.tooltipClass || '');
+             tooltip.classed(classes, true).selectAll('.popover-inner').html(html);

 
 

-               function gxCoords(root) {
-                 var elems = get(root, 'coord'),
-                     coords = [],
-                     times = [];
-                 if (elems.length === 0) elems = get(root, 'gx:coord');
+             if (options.buttonText && options.buttonCallback) {
+               var button = tooltip.selectAll('.button-section .button.action');
+               button.on('click', function (d3_event) {
+                 d3_event.preventDefault();
+                 options.buttonCallback();
+               });
+             }

 
 

-                 for (var i = 0; i < elems.length; i++) {
-                   coords.push(gxCoord(nodeVal(elems[i])));
-                 }
+             var tip = copyBox(tooltip.node().getBoundingClientRect()),
+                 w = containerNode.clientWidth,
+                 h = containerNode.clientHeight,
+                 tooltipWidth = 200,
+                 tooltipArrow = 5,
+                 side,
+                 pos; // hack: this will have bottom placement,
+             // so need to reserve extra space for the tooltip illustration.

 
 

-                 var timeElems = get(root, 'when');
+             if (options.tooltipClass === 'intro-mouse') {
+               tip.height += 80;
+             } // trim box dimensions to just the portion that fits in the container..

 
 

-                 for (var j = 0; j < timeElems.length; j++) {
-                   times.push(nodeVal(timeElems[j]));
-                 }

 
 

-                 return {
-                   coords: coords,
-                   times: times
-                 };
-               }
+             if (tooltipBox.top + tooltipBox.height > h) {
+               tooltipBox.height -= tooltipBox.top + tooltipBox.height - h;
+             }

 
 

-               function getGeometry(root) {
-                 var geomNode,
-                     geomNodes,
-                     i,
-                     j,
-                     k,
-                     geoms = [],
-                     coordTimes = [];
+             if (tooltipBox.left + tooltipBox.width > w) {
+               tooltipBox.width -= tooltipBox.left + tooltipBox.width - w;
+             } // determine tooltip placement..

 
 

-                 if (get1(root, 'MultiGeometry')) {
-                   return getGeometry(get1(root, 'MultiGeometry'));
-                 }

 
 

-                 if (get1(root, 'MultiTrack')) {
-                   return getGeometry(get1(root, 'MultiTrack'));
-                 }
+             if (tooltipBox.top + tooltipBox.height < 100) {
+               // tooltip below box..
+               side = 'bottom';
+               pos = [tooltipBox.left + tooltipBox.width / 2 - tip.width / 2, tooltipBox.top + tooltipBox.height];
+             } else if (tooltipBox.top > h - 140) {
+               // tooltip above box..
+               side = 'top';
+               pos = [tooltipBox.left + tooltipBox.width / 2 - tip.width / 2, tooltipBox.top - tip.height];
+             } else {
+               // tooltip to the side of the tooltipBox..
+               var tipY = tooltipBox.top + tooltipBox.height / 2 - tip.height / 2;

 
 

-                 if (get1(root, 'gx:MultiTrack')) {
-                   return getGeometry(get1(root, 'gx:MultiTrack'));
+               if (_mainLocalizer.textDirection() === 'rtl') {
+                 if (tooltipBox.left - tooltipWidth - tooltipArrow < 70) {
+                   side = 'right';
+                   pos = [tooltipBox.left + tooltipBox.width + tooltipArrow, tipY];
+                 } else {
+                   side = 'left';
+                   pos = [tooltipBox.left - tooltipWidth - tooltipArrow, tipY];

                  }
                  }

-
-                 for (i = 0; i < geotypes.length; i++) {
-                   geomNodes = get(root, geotypes[i]);
-
-                   if (geomNodes) {
-                     for (j = 0; j < geomNodes.length; j++) {
-                       geomNode = geomNodes[j];
-
-                       if (geotypes[i] === 'Point') {
-                         geoms.push({
-                           type: 'Point',
-                           coordinates: coord1(nodeVal(get1(geomNode, 'coordinates')))
-                         });
-                       } else if (geotypes[i] === 'LineString') {
-                         geoms.push({
-                           type: 'LineString',
-                           coordinates: coord(nodeVal(get1(geomNode, 'coordinates')))
-                         });
-                       } else if (geotypes[i] === 'Polygon') {
-                         var rings = get(geomNode, 'LinearRing'),
-                             coords = [];
-
-                         for (k = 0; k < rings.length; k++) {
-                           coords.push(coord(nodeVal(get1(rings[k], 'coordinates'))));
-                         }
-
-                         geoms.push({
-                           type: 'Polygon',
-                           coordinates: coords
-                         });
-                       } else if (geotypes[i] === 'Track' || geotypes[i] === 'gx:Track') {
-                         var track = gxCoords(geomNode);
-                         geoms.push({
-                           type: 'LineString',
-                           coordinates: track.coords
-                         });
-                         if (track.times.length) coordTimes.push(track.times);
-                       }
-                     }
-                   }
+               } else {
+                 if (tooltipBox.left + tooltipBox.width + tooltipArrow + tooltipWidth > w - 70) {
+                   side = 'left';
+                   pos = [tooltipBox.left - tooltipWidth - tooltipArrow, tipY];
+                 } else {
+                   side = 'right';
+                   pos = [tooltipBox.left + tooltipBox.width + tooltipArrow, tipY];

                  }
                  }

-
-                 return {
-                   geoms: geoms,
-                   coordTimes: coordTimes
-                 };

                }
                }

+             }

 
 

-               function getPlacemark(root) {
-                 var geomsAndTimes = getGeometry(root),
-                     i,
-                     properties = {},
-                     name = nodeVal(get1(root, 'name')),
-                     address = nodeVal(get1(root, 'address')),
-                     styleUrl = nodeVal(get1(root, 'styleUrl')),
-                     description = nodeVal(get1(root, 'description')),
-                     timeSpan = get1(root, 'TimeSpan'),
-                     timeStamp = get1(root, 'TimeStamp'),
-                     extendedData = get1(root, 'ExtendedData'),
-                     lineStyle = get1(root, 'LineStyle'),
-                     polyStyle = get1(root, 'PolyStyle'),
-                     visibility = get1(root, 'visibility');
-                 if (!geomsAndTimes.geoms.length) return [];
-                 if (name) properties.name = name;
-                 if (address) properties.address = address;
-
-                 if (styleUrl) {
-                   if (styleUrl[0] !== '#') {
-                     styleUrl = '#' + styleUrl;
-                   }
+             if (options.duration !== 0 || !tooltip.classed(side)) {
+               tooltip.call(uiToggle(true));
+             }

 
 

-                   properties.styleUrl = styleUrl;
+             tooltip.style('top', pos[1] + 'px').style('left', pos[0] + 'px').attr('class', classes + ' ' + side); // shift popover-inner if it is very close to the top or bottom edge
+             // (doesn't affect the placement of the popover-arrow)

 
 

-                   if (styleIndex[styleUrl]) {
-                     properties.styleHash = styleIndex[styleUrl];
-                   }
+             var shiftY = 0;

 
 

-                   if (styleMapIndex[styleUrl]) {
-                     properties.styleMapHash = styleMapIndex[styleUrl];
-                     properties.styleHash = styleIndex[styleMapIndex[styleUrl].normal];
-                   } // Try to populate the lineStyle or polyStyle since we got the style hash
+             if (side === 'left' || side === 'right') {
+               if (pos[1] < 60) {
+                 shiftY = 60 - pos[1];
+               } else if (pos[1] + tip.height > h - 100) {
+                 shiftY = h - pos[1] - tip.height - 100;
+               }
+             }

 
 

+             tooltip.selectAll('.popover-inner').style('top', shiftY + 'px');
+           } else {
+             tooltip.classed('in', false).call(uiToggle(false));
+           }

 
 

-                   var style = styleByHash[properties.styleHash];
+           curtain.cut(box, options.duration);
+           return tooltip;
+         };

 
 

-                   if (style) {
-                     if (!lineStyle) lineStyle = get1(style, 'LineStyle');
-                     if (!polyStyle) polyStyle = get1(style, 'PolyStyle');
-                   }
-                 }
+         curtain.cut = function (datum, duration) {
+           darkness.datum(datum).interrupt();
+           var selection;

 
 

-                 if (description) properties.description = description;
+           if (duration === 0) {
+             selection = darkness;
+           } else {
+             selection = darkness.transition().duration(duration || 600).ease(linear$1);
+           }

 
 

-                 if (timeSpan) {
-                   var begin = nodeVal(get1(timeSpan, 'begin'));
-                   var end = nodeVal(get1(timeSpan, 'end'));
-                   properties.timespan = {
-                     begin: begin,
-                     end: end
-                   };
-                 }
+           selection.attr('d', function (d) {
+             var containerWidth = containerNode.clientWidth;
+             var containerHeight = containerNode.clientHeight;
+             var string = 'M 0,0 L 0,' + containerHeight + ' L ' + containerWidth + ',' + containerHeight + 'L' + containerWidth + ',0 Z';
+             if (!d) return string;
+             return string + 'M' + d.left + ',' + d.top + 'L' + d.left + ',' + (d.top + d.height) + 'L' + (d.left + d.width) + ',' + (d.top + d.height) + 'L' + (d.left + d.width) + ',' + d.top + 'Z';
+           });
+         };

 
 

-                 if (timeStamp) {
-                   properties.timestamp = nodeVal(get1(timeStamp, 'when'));
-                 }
+         curtain.remove = function () {
+           surface.remove();
+           tooltip.remove();
+           select(window).on('resize.curtain', null);
+         }; // ClientRects are immutable, so copy them to an object,
+         // in case we need to trim the height/width.

 
 

-                 if (lineStyle) {
-                   var linestyles = kmlColor(nodeVal(get1(lineStyle, 'color'))),
-                       color = linestyles[0],
-                       opacity = linestyles[1],
-                       width = parseFloat(nodeVal(get1(lineStyle, 'width')));
-                   if (color) properties.stroke = color;
-                   if (!isNaN(opacity)) properties['stroke-opacity'] = opacity;
-                   if (!isNaN(width)) properties['stroke-width'] = width;
-                 }

 
 

-                 if (polyStyle) {
-                   var polystyles = kmlColor(nodeVal(get1(polyStyle, 'color'))),
-                       pcolor = polystyles[0],
-                       popacity = polystyles[1],
-                       fill = nodeVal(get1(polyStyle, 'fill')),
-                       outline = nodeVal(get1(polyStyle, 'outline'));
-                   if (pcolor) properties.fill = pcolor;
-                   if (!isNaN(popacity)) properties['fill-opacity'] = popacity;
-                   if (fill) properties['fill-opacity'] = fill === '1' ? properties['fill-opacity'] || 1 : 0;
-                   if (outline) properties['stroke-opacity'] = outline === '1' ? properties['stroke-opacity'] || 1 : 0;
-                 }
+         function copyBox(src) {
+           return {
+             top: src.top,
+             right: src.right,
+             bottom: src.bottom,
+             left: src.left,
+             width: src.width,
+             height: src.height
+           };
+         }

 
 

-                 if (extendedData) {
-                   var datas = get(extendedData, 'Data'),
-                       simpleDatas = get(extendedData, 'SimpleData');
+         return curtain;
+       }

 
 

-                   for (i = 0; i < datas.length; i++) {
-                     properties[datas[i].getAttribute('name')] = nodeVal(get1(datas[i], 'value'));
-                   }
+       function uiIntroWelcome(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var chapter = {
+           title: 'intro.welcome.title'
+         };

 
 

-                   for (i = 0; i < simpleDatas.length; i++) {
-                     properties[simpleDatas[i].getAttribute('name')] = nodeVal(simpleDatas[i]);
-                   }
-                 }
+         function welcome() {
+           context.map().centerZoom([-85.63591, 41.94285], 19);
+           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.welcome'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: practice
+           });
+         }

 
 

-                 if (visibility) {
-                   properties.visibility = nodeVal(visibility);
-                 }
+         function practice() {
+           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.practice'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: words
+           });
+         }

 
 

-                 if (geomsAndTimes.coordTimes.length) {
-                   properties.coordTimes = geomsAndTimes.coordTimes.length === 1 ? geomsAndTimes.coordTimes[0] : geomsAndTimes.coordTimes;
-                 }
+         function words() {
+           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.words'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: chapters
+           });
+         }

 
 

-                 var feature = {
-                   type: 'Feature',
-                   geometry: geomsAndTimes.geoms.length === 1 ? geomsAndTimes.geoms[0] : {
-                     type: 'GeometryCollection',
-                     geometries: geomsAndTimes.geoms
-                   },
-                   properties: properties
-                 };
-                 if (attr(root, 'id')) feature.id = attr(root, 'id');
-                 return [feature];
-               }
+         function chapters() {
+           dispatch.call('done');
+           reveal('.intro-nav-wrap .chapter-navigation', helpHtml('intro.welcome.chapters', {
+             next: _t('intro.navigation.title')
+           }));
+         }

 
 

-               return gj;
-             },
-             gpx: function gpx(doc) {
-               var i,
-                   tracks = get(doc, 'trk'),
-                   routes = get(doc, 'rte'),
-                   waypoints = get(doc, 'wpt'),
-                   // a feature collection
-               gj = fc(),
-                   feature;
-
-               for (i = 0; i < tracks.length; i++) {
-                 feature = getTrack(tracks[i]);
-                 if (feature) gj.features.push(feature);
-               }
+         chapter.enter = function () {
+           welcome();
+         };

 
 

-               for (i = 0; i < routes.length; i++) {
-                 feature = getRoute(routes[i]);
-                 if (feature) gj.features.push(feature);
-               }
+         chapter.exit = function () {
+           context.container().select('.curtain-tooltip.intro-mouse').selectAll('.counter').remove();
+         };

 
 

-               for (i = 0; i < waypoints.length; i++) {
-                 gj.features.push(getPoint(waypoints[i]));
-               }
+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();
+         };

 
 

-               function getPoints(node, pointname) {
-                 var pts = get(node, pointname),
-                     line = [],
-                     times = [],
-                     heartRates = [],
-                     l = pts.length;
-                 if (l < 2) return {}; // Invalid line in GeoJSON
+         return utilRebind(chapter, dispatch, 'on');
+       }

 
 

-                 for (var i = 0; i < l; i++) {
-                   var c = coordPair(pts[i]);
-                   line.push(c.coordinates);
-                   if (c.time) times.push(c.time);
-                   if (c.heartRate) heartRates.push(c.heartRate);
-                 }
+       function uiIntroNavigation(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var timeouts = [];
+         var hallId = 'n2061';
+         var townHall = [-85.63591, 41.94285];
+         var springStreetId = 'w397';
+         var springStreetEndId = 'n1834';
+         var springStreet = [-85.63582, 41.94255];
+         var onewayField = _mainPresetIndex.field('oneway');
+         var maxspeedField = _mainPresetIndex.field('maxspeed');
+         var chapter = {
+           title: 'intro.navigation.title'
+         };

 
 

-                 return {
-                   line: line,
-                   times: times,
-                   heartRates: heartRates
-                 };
-               }
+         function timeout(f, t) {
+           timeouts.push(window.setTimeout(f, t));
+         }

 
 

-               function getTrack(node) {
-                 var segments = get(node, 'trkseg'),
-                     track = [],
-                     times = [],
-                     heartRates = [],
-                     line;
+         function eventCancel(d3_event) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+         }

 
 

-                 for (var i = 0; i < segments.length; i++) {
-                   line = getPoints(segments[i], 'trkpt');
+         function isTownHallSelected() {
+           var ids = context.selectedIDs();
+           return ids.length === 1 && ids[0] === hallId;
+         }

 
 

-                   if (line) {
-                     if (line.line) track.push(line.line);
-                     if (line.times && line.times.length) times.push(line.times);
-                     if (line.heartRates && line.heartRates.length) heartRates.push(line.heartRates);
-                   }
-                 }
+         function dragMap() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           var msec = transitionTime(townHall, context.map().center());

 
 

-                 if (track.length === 0) return;
-                 var properties = getProperties(node);
-                 extend(properties, getLineStyle(get1(node, 'extensions')));
-                 if (times.length) properties.coordTimes = track.length === 1 ? times[0] : times;
-                 if (heartRates.length) properties.heartRates = track.length === 1 ? heartRates[0] : heartRates;
-                 return {
-                   type: 'Feature',
-                   properties: properties,
-                   geometry: {
-                     type: track.length === 1 ? 'LineString' : 'MultiLineString',
-                     coordinates: track.length === 1 ? track[0] : track
-                   }
-                 };
-               }
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });
+           }

 
 

-               function getRoute(node) {
-                 var line = getPoints(node, 'rtept');
-                 if (!line.line) return;
-                 var prop = getProperties(node);
-                 extend(prop, getLineStyle(get1(node, 'extensions')));
-                 var routeObj = {
-                   type: 'Feature',
-                   properties: prop,
-                   geometry: {
-                     type: 'LineString',
-                     coordinates: line.line
-                   }
-                 };
-                 return routeObj;
-               }
+           context.map().centerZoomEase(townHall, 19, msec);
+           timeout(function () {
+             var centerStart = context.map().center();
+             var textId = context.lastPointerType() === 'mouse' ? 'drag' : 'drag_touch';
+             var dragString = helpHtml('intro.navigation.map_info') + '{br}' + helpHtml('intro.navigation.' + textId);
+             reveal('.surface', dragString);
+             context.map().on('drawn.intro', function () {
+               reveal('.surface', dragString, {
+                 duration: 0
+               });
+             });
+             context.map().on('move.intro', function () {
+               var centerNow = context.map().center();

 
 

-               function getPoint(node) {
-                 var prop = getProperties(node);
-                 extend(prop, getMulti(node, ['sym']));
-                 return {
-                   type: 'Feature',
-                   properties: prop,
-                   geometry: {
-                     type: 'Point',
-                     coordinates: coordPair(node).coordinates
-                   }
-                 };
+               if (centerStart[0] !== centerNow[0] || centerStart[1] !== centerNow[1]) {
+                 context.map().on('move.intro', null);
+                 timeout(function () {
+                   continueTo(zoomMap);
+                 }, 3000);

                }
                }

+             });
+           }, msec + 100);

 
 

-               function getLineStyle(extensions) {
-                 var style = {};
-
-                 if (extensions) {
-                   var lineStyle = get1(extensions, 'line');
-
-                   if (lineStyle) {
-                     var color = nodeVal(get1(lineStyle, 'color')),
-                         opacity = parseFloat(nodeVal(get1(lineStyle, 'opacity'))),
-                         width = parseFloat(nodeVal(get1(lineStyle, 'width')));
-                     if (color) style.stroke = color;
-                     if (!isNaN(opacity)) style['stroke-opacity'] = opacity; // GPX width is in mm, convert to px with 96 px per inch
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-                     if (!isNaN(width)) style['stroke-width'] = width * 96 / 25.4;
-                   }
-                 }
+         function zoomMap() {
+           var zoomStart = context.map().zoom();
+           var textId = context.lastPointerType() === 'mouse' ? 'zoom' : 'zoom_touch';
+           var zoomString = helpHtml('intro.navigation.' + textId);
+           reveal('.surface', zoomString);
+           context.map().on('drawn.intro', function () {
+             reveal('.surface', zoomString, {
+               duration: 0
+             });
+           });
+           context.map().on('move.intro', function () {
+             if (context.map().zoom() !== zoomStart) {
+               context.map().on('move.intro', null);
+               timeout(function () {
+                 continueTo(features);
+               }, 3000);
+             }
+           });

 
 

-                 return style;
-               }
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-               function getProperties(node) {
-                 var prop = getMulti(node, ['name', 'cmt', 'desc', 'type', 'time', 'keywords']),
-                     links = get(node, 'link');
-                 if (links.length) prop.links = [];
+         function features() {
+           var onClick = function onClick() {
+             continueTo(pointsLinesAreas);
+           };

 
 

-                 for (var i = 0, link; i < links.length; i++) {
-                   link = {
-                     href: attr(links[i], 'href')
-                   };
-                   extend(link, getMulti(links[i], ['text', 'type']));
-                   prop.links.push(link);
-                 }
+           reveal('.surface', helpHtml('intro.navigation.features'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.map().on('drawn.intro', function () {
+             reveal('.surface', helpHtml('intro.navigation.features'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: onClick
+             });
+           });

 
 

-                 return prop;
-               }
+           function continueTo(nextStep) {
+             context.map().on('drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-               return gj;
-             }
+         function pointsLinesAreas() {
+           var onClick = function onClick() {
+             continueTo(nodesWays);

            };
            };

-           return t;
-         }();

 
 

-         module.exports = toGeoJSON;
-       });
+           reveal('.surface', helpHtml('intro.navigation.points_lines_areas'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.map().on('drawn.intro', function () {
+             reveal('.surface', helpHtml('intro.navigation.points_lines_areas'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: onClick
+             });
+           });

 
 

-       var _initialized = false;
-       var _enabled = false;
+           function continueTo(nextStep) {
+             context.map().on('drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-       var _geojson;
+         function nodesWays() {
+           var onClick = function onClick() {
+             continueTo(clickTownHall);
+           };

 
 

-       function svgData(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+           reveal('.surface', helpHtml('intro.navigation.nodes_ways'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.map().on('drawn.intro', function () {
+             reveal('.surface', helpHtml('intro.navigation.nodes_ways'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: onClick
+             });
+           });

 
 

-         var _showLabels = true;
-         var detected = utilDetect();
-         var layer = select(null);
+           function continueTo(nextStep) {
+             context.map().on('drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-         var _vtService;
+         function clickTownHall() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           var entity = context.hasEntity(hallId);
+           if (!entity) return;
+           reveal(null, null, {
+             duration: 0
+           });
+           context.map().centerZoomEase(entity.loc, 19, 500);
+           timeout(function () {
+             var entity = context.hasEntity(hallId);
+             if (!entity) return;
+             var box = pointBox(entity.loc, context);
+             var textId = context.lastPointerType() === 'mouse' ? 'click_townhall' : 'tap_townhall';
+             reveal(box, helpHtml('intro.navigation.' + textId));
+             context.map().on('move.intro drawn.intro', function () {
+               var entity = context.hasEntity(hallId);
+               if (!entity) return;
+               var box = pointBox(entity.loc, context);
+               reveal(box, helpHtml('intro.navigation.' + textId), {
+                 duration: 0
+               });
+             });
+             context.on('enter.intro', function () {
+               if (isTownHallSelected()) continueTo(selectedTownHall);
+             });
+           }, 550); // after centerZoomEase

 
 

-         var _fileList;
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(hallId)) {
+               continueTo(clickTownHall);
+             }
+           });

 
 

-         var _template;
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-         var _src;
+         function selectedTownHall() {
+           if (!isTownHallSelected()) return clickTownHall();
+           var entity = context.hasEntity(hallId);
+           if (!entity) return clickTownHall();
+           var box = pointBox(entity.loc, context);

 
 

-         function init() {
-           if (_initialized) return; // run once
+           var onClick = function onClick() {
+             continueTo(editorTownHall);
+           };

 
 

-           _geojson = {};
-           _enabled = true;
+           reveal(box, helpHtml('intro.navigation.selected_townhall'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             var entity = context.hasEntity(hallId);
+             if (!entity) return;
+             var box = pointBox(entity.loc, context);
+             reveal(box, helpHtml('intro.navigation.selected_townhall'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: onClick
+             });
+           });
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(hallId)) {
+               continueTo(clickTownHall);
+             }
+           });

 
 

-           function over(d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             d3_event.dataTransfer.dropEffect = 'copy';
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

-
-           context.container().attr('dropzone', 'copy').on('drop.svgData', function (d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             if (!detected.filedrop) return;
-             drawData.fileList(d3_event.dataTransfer.files);
-           }).on('dragenter.svgData', over).on('dragexit.svgData', over).on('dragover.svgData', over);
-           _initialized = true;

          }
 
          }
 

-         function getService() {
-           if (services.vectorTile && !_vtService) {
-             _vtService = services.vectorTile;
+         function editorTownHall() {
+           if (!isTownHallSelected()) return clickTownHall(); // disallow scrolling

 
 

-             _vtService.event.on('loadedData', throttledRedraw);
-           } else if (!services.vectorTile && _vtService) {
-             _vtService = null;
-           }
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);

 
 

-           return _vtService;
-         }
+           var onClick = function onClick() {
+             continueTo(presetTownHall);
+           };

 
 

-         function showLayer() {
-           layerOn();
-           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
-             dispatch.call('change');
+           reveal('.entity-editor-pane', helpHtml('intro.navigation.editor_townhall'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.on('exit.intro', function () {
+             continueTo(clickTownHall);
+           });
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(hallId)) {
+               continueTo(clickTownHall);
+             }

            });
            });

-         }

 
 

-         function hideLayer() {
-           throttledRedraw.cancel();
-           layer.transition().duration(250).style('opacity', 0).on('end', layerOff);
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             nextStep();
+           }

          }
 
          }
 

-         function layerOn() {
-           layer.style('display', 'block');
-         }
+         function presetTownHall() {
+           if (!isTownHallSelected()) return clickTownHall(); // reset pane, in case user happened to change it..

 
 

-         function layerOff() {
-           layer.selectAll('.viewfield-group').remove();
-           layer.style('display', 'none');
-         } // ensure that all geojson features in a collection have IDs
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // disallow scrolling

 
 

+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel); // preset match, in case the user happened to change it.

 
 

-         function ensureIDs(gj) {
-           if (!gj) return null;
+           var entity = context.entity(context.selectedIDs()[0]);
+           var preset = _mainPresetIndex.match(entity, context.graph());

 
 

-           if (gj.type === 'FeatureCollection') {
-             for (var i = 0; i < gj.features.length; i++) {
-               ensureFeatureID(gj.features[i]);
+           var onClick = function onClick() {
+             continueTo(fieldsTownHall);
+           };
+
+           reveal('.entity-editor-pane .section-feature-type', helpHtml('intro.navigation.preset_townhall', {
+             preset: preset.name()
+           }), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.on('exit.intro', function () {
+             continueTo(clickTownHall);
+           });
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(hallId)) {
+               continueTo(clickTownHall);

              }
              }

-           } else {
-             ensureFeatureID(gj);
+           });
+
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           return gj;
-         } // ensure that each single Feature object has a unique ID
+         function fieldsTownHall() {
+           if (!isTownHallSelected()) return clickTownHall(); // reset pane, in case user happened to change it..

 
 

+           context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // disallow scrolling

 
 

-         function ensureFeatureID(feature) {
-           if (!feature) return;
-           feature.__featurehash__ = utilHashcode(fastJsonStableStringify(feature));
-           return feature;
-         } // Prefer an array of Features instead of a FeatureCollection
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);

 
 

+           var onClick = function onClick() {
+             continueTo(closeTownHall);
+           };

 
 

-         function getFeatures(gj) {
-           if (!gj) return [];
+           reveal('.entity-editor-pane .section-preset-fields', helpHtml('intro.navigation.fields_townhall'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.on('exit.intro', function () {
+             continueTo(clickTownHall);
+           });
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(hallId)) {
+               continueTo(clickTownHall);
+             }
+           });

 
 

-           if (gj.type === 'FeatureCollection') {
-             return gj.features;
-           } else {
-             return [gj];
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             nextStep();

            }
          }
 
            }
          }
 

-         function featureKey(d) {
-           return d.__featurehash__;
-         }
-
-         function isPolygon(d) {
-           return d.geometry.type === 'Polygon' || d.geometry.type === 'MultiPolygon';
-         }
-
-         function clipPathID(d) {
-           return 'ideditor-data-' + d.__featurehash__ + '-clippath';
-         }
+         function closeTownHall() {
+           if (!isTownHallSelected()) return clickTownHall();
+           var selector = '.entity-editor-pane button.close svg use';
+           var href = select(selector).attr('href') || '#iD-icon-close';
+           reveal('.entity-editor-pane', helpHtml('intro.navigation.close_townhall', {
+             button: icon(href, 'inline')
+           }));
+           context.on('exit.intro', function () {
+             continueTo(searchStreet);
+           });
+           context.history().on('change.intro', function () {
+             // update the close icon in the tooltip if the user edits something.
+             var selector = '.entity-editor-pane button.close svg use';
+             var href = select(selector).attr('href') || '#iD-icon-close';
+             reveal('.entity-editor-pane', helpHtml('intro.navigation.close_townhall', {
+               button: icon(href, 'inline')
+             }), {
+               duration: 0
+             });
+           });

 
 

-         function featureClasses(d) {
-           return ['data' + d.__featurehash__, d.geometry.type, isPolygon(d) ? 'area' : '', d.__layerID__ || ''].filter(Boolean).join(' ');
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }

          }
 
          }
 

-         function drawData(selection) {
-           var vtService = getService();
-           var getPath = svgPath(projection).geojson;
-           var getAreaPath = svgPath(projection, null, true).geojson;
-           var hasData = drawData.hasData();
-           layer = selection.selectAll('.layer-mapdata').data(_enabled && hasData ? [0] : []);
-           layer.exit().remove();
-           layer = layer.enter().append('g').attr('class', 'layer-mapdata').merge(layer);
-           var surface = context.surface();
-           if (!surface || surface.empty()) return; // not ready to draw yet, starting up
-           // Gather data
+         function searchStreet() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial'); // ensure spring street exists

 
 

-           var geoData, polygonData;
+           var msec = transitionTime(springStreet, context.map().center());

 
 

-           if (_template && vtService) {
-             // fetch data from vector tile service
-             var sourceID = _template;
-             vtService.loadTiles(sourceID, _template, projection);
-             geoData = vtService.data(sourceID, projection);
-           } else {
-             geoData = getFeatures(_geojson);
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });

            }
 
            }
 

-           geoData = geoData.filter(getPath);
-           polygonData = geoData.filter(isPolygon); // Draw clip paths for polygons
-
-           var clipPaths = surface.selectAll('defs').selectAll('.clipPath-data').data(polygonData, featureKey);
-           clipPaths.exit().remove();
-           var clipPathsEnter = clipPaths.enter().append('clipPath').attr('class', 'clipPath-data').attr('id', clipPathID);
-           clipPathsEnter.append('path');
-           clipPaths.merge(clipPathsEnter).selectAll('path').attr('d', getAreaPath); // Draw fill, shadow, stroke layers
-
-           var datagroups = layer.selectAll('g.datagroup').data(['fill', 'shadow', 'stroke']);
-           datagroups = datagroups.enter().append('g').attr('class', function (d) {
-             return 'datagroup datagroup-' + d;
-           }).merge(datagroups); // Draw paths
-
-           var pathData = {
-             fill: polygonData,
-             shadow: geoData,
-             stroke: geoData
-           };
-           var paths = datagroups.selectAll('path').data(function (layer) {
-             return pathData[layer];
-           }, featureKey); // exit
+           context.map().centerZoomEase(springStreet, 19, msec); // ..and user can see it

 
 

-           paths.exit().remove(); // enter/update
+           timeout(function () {
+             reveal('.search-header input', helpHtml('intro.navigation.search_street', {
+               name: _t('intro.graph.name.spring-street')
+             }));
+             context.container().select('.search-header input').on('keyup.intro', checkSearchResult);
+           }, msec + 100);
+         }

 
 

-           paths = paths.enter().append('path').attr('class', function (d) {
-             var datagroup = this.parentNode.__data__;
-             return 'pathdata ' + datagroup + ' ' + featureClasses(d);
-           }).attr('clip-path', function (d) {
-             var datagroup = this.parentNode.__data__;
-             return datagroup === 'fill' ? 'url(#' + clipPathID(d) + ')' : null;
-           }).merge(paths).attr('d', function (d) {
-             var datagroup = this.parentNode.__data__;
-             return datagroup === 'fill' ? getAreaPath(d) : getPath(d);
-           }); // Draw labels
+         function checkSearchResult() {
+           var first = context.container().select('.feature-list-item:nth-child(0n+2)'); // skip "No Results" item

 
 

-           layer.call(drawLabels, 'label-halo', geoData).call(drawLabels, 'label', geoData);
+           var firstName = first.select('.entity-name');
+           var name = _t('intro.graph.name.spring-street');

 
 

-           function drawLabels(selection, textClass, data) {
-             var labelPath = d3_geoPath(projection);
-             var labelData = data.filter(function (d) {
-               return _showLabels && d.properties && (d.properties.desc || d.properties.name);
+           if (!firstName.empty() && firstName.html() === name) {
+             reveal(first.node(), helpHtml('intro.navigation.choose_street', {
+               name: name
+             }), {
+               duration: 300

              });
              });

-             var labels = selection.selectAll('text.' + textClass).data(labelData, featureKey); // exit
-
-             labels.exit().remove(); // enter/update
-
-             labels = labels.enter().append('text').attr('class', function (d) {
-               return textClass + ' ' + featureClasses(d);
-             }).merge(labels).text(function (d) {
-               return d.properties.desc || d.properties.name;
-             }).attr('x', function (d) {
-               var centroid = labelPath.centroid(d);
-               return centroid[0] + 11;
-             }).attr('y', function (d) {
-               var centroid = labelPath.centroid(d);
-               return centroid[1];
+             context.on('exit.intro', function () {
+               continueTo(selectedStreet);

              });
              });

+             context.container().select('.search-header input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);

            }
            }

-         }

 
 

-         function getExtension(fileName) {
-           if (!fileName) return;
-           var re = /\.(gpx|kml|(geo)?json)$/i;
-           var match = fileName.toLowerCase().match(re);
-           return match && match.length && match[0];
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.container().select('.search-header input').on('keydown.intro', null).on('keyup.intro', null);
+             nextStep();
+           }

          }
 
          }
 

-         function xmlToDom(textdata) {
-           return new DOMParser().parseFromString(textdata, 'text/xml');
-         }
+         function selectedStreet() {
+           if (!context.hasEntity(springStreetEndId) || !context.hasEntity(springStreetId)) {
+             return searchStreet();
+           }

 
 

-         drawData.setFile = function (extension, data) {
-           _template = null;
-           _fileList = null;
-           _geojson = null;
-           _src = null;
-           var gj;
+           var onClick = function onClick() {
+             continueTo(editorStreet);
+           };

 
 

-           switch (extension) {
-             case '.gpx':
-               gj = togeojson.gpx(xmlToDom(data));
-               break;
+           var entity = context.entity(springStreetEndId);
+           var box = pointBox(entity.loc, context);
+           box.height = 500;
+           reveal(box, helpHtml('intro.navigation.selected_street', {
+             name: _t('intro.graph.name.spring-street')
+           }), {
+             duration: 600,
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           timeout(function () {
+             context.map().on('move.intro drawn.intro', function () {
+               var entity = context.hasEntity(springStreetEndId);
+               if (!entity) return;
+               var box = pointBox(entity.loc, context);
+               box.height = 500;
+               reveal(box, helpHtml('intro.navigation.selected_street', {
+                 name: _t('intro.graph.name.spring-street')
+               }), {
+                 duration: 0,
+                 buttonText: _t.html('intro.ok'),
+                 buttonCallback: onClick
+               });
+             });
+           }, 600); // after reveal.

 
 

-             case '.kml':
-               gj = togeojson.kml(xmlToDom(data));
-               break;
+           context.on('enter.intro', function (mode) {
+             if (!context.hasEntity(springStreetId)) {
+               return continueTo(searchStreet);
+             }

 
 

-             case '.geojson':
-             case '.json':
-               gj = JSON.parse(data);
-               break;
-           }
+             var ids = context.selectedIDs();

 
 

-           gj = gj || {};
+             if (mode.id !== 'select' || !ids.length || ids[0] !== springStreetId) {
+               // keep Spring Street selected..
+               context.enter(modeSelect(context, [springStreetId]));
+             }
+           });
+           context.history().on('change.intro', function () {
+             if (!context.hasEntity(springStreetEndId) || !context.hasEntity(springStreetId)) {
+               timeout(function () {
+                 continueTo(searchStreet);
+               }, 300); // after any transition (e.g. if user deleted intersection)
+             }
+           });

 
 

-           if (Object.keys(gj).length) {
-             _geojson = ensureIDs(gj);
-             _src = extension + ' data file';
-             this.fitZoom();
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           dispatch.call('change');
-           return this;
-         };
+         function editorStreet() {
+           var selector = '.entity-editor-pane button.close svg use';
+           var href = select(selector).attr('href') || '#iD-icon-close';
+           reveal('.entity-editor-pane', helpHtml('intro.navigation.street_different_fields') + '{br}' + helpHtml('intro.navigation.editor_street', {
+             button: icon(href, 'inline'),
+             field1: onewayField.label(),
+             field2: maxspeedField.label()
+           }));
+           context.on('exit.intro', function () {
+             continueTo(play);
+           });
+           context.history().on('change.intro', function () {
+             // update the close icon in the tooltip if the user edits something.
+             var selector = '.entity-editor-pane button.close svg use';
+             var href = select(selector).attr('href') || '#iD-icon-close';
+             reveal('.entity-editor-pane', helpHtml('intro.navigation.street_different_fields') + '{br}' + helpHtml('intro.navigation.editor_street', {
+               button: icon(href, 'inline'),
+               field1: onewayField.label(),
+               field2: maxspeedField.label()
+             }), {
+               duration: 0
+             });
+           });

 
 

-         drawData.showLabels = function (val) {
-           if (!arguments.length) return _showLabels;
-           _showLabels = val;
-           return this;
-         };
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-         drawData.enabled = function (val) {
-           if (!arguments.length) return _enabled;
-           _enabled = val;
+         function play() {
+           dispatch.call('done');
+           reveal('.ideditor', helpHtml('intro.navigation.play', {
+             next: _t('intro.points.title')
+           }), {
+             tooltipBox: '.intro-nav-wrap .chapter-point',
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               reveal('.ideditor');
+             }
+           });
+         }

 
 

-           if (_enabled) {
-             showLayer();
-           } else {
-             hideLayer();
-           }
+         chapter.enter = function () {
+           dragMap();
+         };

 
 

-           dispatch.call('change');
-           return this;
+         chapter.exit = function () {
+           timeouts.forEach(window.clearTimeout);
+           context.on('enter.intro exit.intro', null);
+           context.map().on('move.intro drawn.intro', null);
+           context.history().on('change.intro', null);
+           context.container().select('.inspector-wrap').on('wheel.intro', null);
+           context.container().select('.search-header input').on('keydown.intro keyup.intro', null);

          };
 
          };
 

-         drawData.hasData = function () {
-           var gj = _geojson || {};
-           return !!(_template || Object.keys(gj).length);
+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();

          };
 
          };
 

-         drawData.template = function (val, src) {
-           if (!arguments.length) return _template; // test source against OSM imagery blocklists..
+         return utilRebind(chapter, dispatch, 'on');
+       }

 
 

-           var osm = context.connection();
+       function uiIntroPoint(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var timeouts = [];
+         var intersection = [-85.63279, 41.94394];
+         var building = [-85.632422, 41.944045];
+         var cafePreset = _mainPresetIndex.item('amenity/cafe');
+         var _pointID = null;
+         var chapter = {
+           title: 'intro.points.title'
+         };

 
 

-           if (osm) {
-             var blocklists = osm.imageryBlocklists();
-             var fail = false;
-             var tested = 0;
-             var regex;
+         function timeout(f, t) {
+           timeouts.push(window.setTimeout(f, t));
+         }

 
 

-             for (var i = 0; i < blocklists.length; i++) {
-               regex = blocklists[i];
-               fail = regex.test(val);
-               tested++;
-               if (fail) break;
-             } // ensure at least one test was run.
+         function eventCancel(d3_event) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+         }

 
 

+         function addPoint() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           var msec = transitionTime(intersection, context.map().center());

 
 

-             if (!tested) {
-               regex = /.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/;
-               fail = regex.test(val);
-             }
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });

            }
 
            }
 

-           _template = val;
-           _fileList = null;
-           _geojson = null; // strip off the querystring/hash from the template,
-           // it often includes the access token
+           context.map().centerZoomEase(intersection, 19, msec);
+           timeout(function () {
+             var tooltip = reveal('button.add-point', helpHtml('intro.points.points_info') + '{br}' + helpHtml('intro.points.add_point'));
+             _pointID = null;
+             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-points');
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'add-point') return;
+               continueTo(placePoint);
+             });
+           }, msec + 100);

 
 

-           _src = src || 'vectortile:' + val.split(/[?#]/)[0];
-           dispatch.call('change');
-           return this;
-         };
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-         drawData.geojson = function (gj, src) {
-           if (!arguments.length) return _geojson;
-           _template = null;
-           _fileList = null;
-           _geojson = null;
-           _src = null;
-           gj = gj || {};
+         function placePoint() {
+           if (context.mode().id !== 'add-point') {
+             return chapter.restart();
+           }
+
+           var pointBox = pad(building, 150, context);
+           var textId = context.lastPointerType() === 'mouse' ? 'place_point' : 'place_point_touch';
+           reveal(pointBox, helpHtml('intro.points.' + textId));
+           context.map().on('move.intro drawn.intro', function () {
+             pointBox = pad(building, 150, context);
+             reveal(pointBox, helpHtml('intro.points.' + textId), {
+               duration: 0
+             });
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'select') return chapter.restart();
+             _pointID = context.mode().selectedIDs()[0];
+             continueTo(searchPreset);
+           });

 
 

-           if (Object.keys(gj).length) {
-             _geojson = ensureIDs(gj);
-             _src = src || 'unknown.geojson';
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           dispatch.call('change');
-           return this;
-         };
+         function searchPreset() {
+           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
+             return addPoint();
+           } // disallow scrolling

 
 

-         drawData.fileList = function (fileList) {
-           if (!arguments.length) return _fileList;
-           _template = null;
-           _fileList = fileList;
-           _geojson = null;
-           _src = null;
-           if (!fileList || !fileList.length) return this;
-           var f = fileList[0];
-           var extension = getExtension(f.name);
-           var reader = new FileReader();

 
 

-           reader.onload = function () {
-             return function (e) {
-               drawData.setFile(extension, e.target.result);
-             };
-           }();
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+           reveal('.preset-search-input', helpHtml('intro.points.search_cafe', {
+             preset: cafePreset.name()
+           }));
+           context.on('enter.intro', function (mode) {
+             if (!_pointID || !context.hasEntity(_pointID)) {
+               return continueTo(addPoint);
+             }

 
 

-           reader.readAsText(f);
-           return this;
-         };
+             var ids = context.selectedIDs();

 
 

-         drawData.url = function (url, defaultExtension) {
-           _template = null;
-           _fileList = null;
-           _geojson = null;
-           _src = null; // strip off any querystring/hash from the url before checking extension
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _pointID) {
+               // keep the user's point selected..
+               context.enter(modeSelect(context, [_pointID])); // disallow scrolling

 
 

-           var testUrl = url.split(/[?#]/)[0];
-           var extension = getExtension(testUrl) || defaultExtension;
+               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+               reveal('.preset-search-input', helpHtml('intro.points.search_cafe', {
+                 preset: cafePreset.name()
+               }));
+               context.history().on('change.intro', null);
+             }
+           });

 
 

-           if (extension) {
-             _template = null;
-             d3_text(url).then(function (data) {
-               drawData.setFile(extension, data);
-             })["catch"](function () {
-               /* ignore */
-             });
-           } else {
-             drawData.template(url);
+           function checkPresetSearch() {
+             var first = context.container().select('.preset-list-item:first-child');
+
+             if (first.classed('preset-amenity-cafe')) {
+               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
+               reveal(first.select('.preset-list-button').node(), helpHtml('intro.points.choose_cafe', {
+                 preset: cafePreset.name()
+               }), {
+                 duration: 300
+               });
+               context.history().on('change.intro', function () {
+                 continueTo(aboutFeatureEditor);
+               });
+             }

            }
 
            }
 

-           return this;
-         };
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+             nextStep();
+           }
+         }

 
 

-         drawData.getSrc = function () {
-           return _src || '';
-         };
+         function aboutFeatureEditor() {
+           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
+             return addPoint();
+           }

 
 

-         drawData.fitZoom = function () {
-           var features = getFeatures(_geojson);
-           if (!features.length) return;
-           var map = context.map();
-           var viewport = map.trimmedExtent().polygon();
-           var coords = features.reduce(function (coords, feature) {
-             var geom = feature.geometry;
-             if (!geom) return coords;
-             var c = geom.coordinates;
-             /* eslint-disable no-fallthrough */
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.points.feature_editor'), {
+               tooltipClass: 'intro-points-describe',
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: function buttonCallback() {
+                 continueTo(addName);
+               }
+             });
+           }, 400);
+           context.on('exit.intro', function () {
+             // if user leaves select mode here, just continue with the tutorial.
+             continueTo(reselectPoint);
+           });

 
 

-             switch (geom.type) {
-               case 'Point':
-                 c = [c];
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         }

 
 

-               case 'MultiPoint':
-               case 'LineString':
-                 break;
+         function addName() {
+           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
+             return addPoint();
+           } // reset pane, in case user happened to change it..

 
 

-               case 'MultiPolygon':
-                 c = utilArrayFlatten(c);

 
 

-               case 'Polygon':
-               case 'MultiLineString':
-                 c = utilArrayFlatten(c);
-                 break;
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+           var addNameString = helpHtml('intro.points.fields_info') + '{br}' + helpHtml('intro.points.add_name');
+           timeout(function () {
+             // It's possible for the user to add a name in a previous step..
+             // If so, don't tell them to add the name in this step.
+             // Give them an OK button instead.
+             var entity = context.entity(_pointID);
+
+             if (entity.tags.name) {
+               var tooltip = reveal('.entity-editor-pane', addNameString, {
+                 tooltipClass: 'intro-points-describe',
+                 buttonText: _t.html('intro.ok'),
+                 buttonCallback: function buttonCallback() {
+                   continueTo(addCloseEditor);
+                 }
+               });
+               tooltip.select('.instruction').style('display', 'none');
+             } else {
+               reveal('.entity-editor-pane', addNameString, {
+                 tooltipClass: 'intro-points-describe'
+               });

              }
              }

-             /* eslint-enable no-fallthrough */
+           }, 400);
+           context.history().on('change.intro', function () {
+             continueTo(addCloseEditor);
+           });
+           context.on('exit.intro', function () {
+             // if user leaves select mode here, just continue with the tutorial.
+             continueTo(reselectPoint);
+           });

 
 

+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-             return utilArrayUnion(coords, c);
-           }, []);
+         function addCloseEditor() {
+           // reset pane, in case user happened to change it..
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+           var selector = '.entity-editor-pane button.close svg use';
+           var href = select(selector).attr('href') || '#iD-icon-close';
+           context.on('exit.intro', function () {
+             continueTo(reselectPoint);
+           });
+           reveal('.entity-editor-pane', helpHtml('intro.points.add_close', {
+             button: icon(href, 'inline')
+           }));

 
 

-           if (!geoPolygonIntersectsPolygon(viewport, coords, true)) {
-             var extent = geoExtent(d3_geoBounds({
-               type: 'LineString',
-               coordinates: coords
-             }));
-             map.centerZoom(extent.center(), map.trimmedExtentZoom(extent));
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           return this;
-         };
-
-         init();
-         return drawData;
-       }
+         function reselectPoint() {
+           if (!_pointID) return chapter.restart();
+           var entity = context.hasEntity(_pointID);
+           if (!entity) return chapter.restart(); // make sure it's still a cafe, in case user somehow changed it..

 
 

-       function svgDebug(projection, context) {
-         function drawDebug(selection) {
-           var showTile = context.getDebug('tile');
-           var showCollision = context.getDebug('collision');
-           var showImagery = context.getDebug('imagery');
-           var showTouchTargets = context.getDebug('target');
-           var showDownloaded = context.getDebug('downloaded');
-           var debugData = [];
+           var oldPreset = _mainPresetIndex.match(entity, context.graph());
+           context.replace(actionChangePreset(_pointID, oldPreset, cafePreset));
+           context.enter(modeBrowse(context));
+           var msec = transitionTime(entity.loc, context.map().center());

 
 

-           if (showTile) {
-             debugData.push({
-               "class": 'red',
-               label: 'tile'
+           if (msec) {
+             reveal(null, null, {
+               duration: 0

              });
            }
 
              });
            }
 

-           if (showCollision) {
-             debugData.push({
-               "class": 'yellow',
-               label: 'collision'
+           context.map().centerEase(entity.loc, msec);
+           timeout(function () {
+             var box = pointBox(entity.loc, context);
+             reveal(box, helpHtml('intro.points.reselect'), {
+               duration: 600

              });
              });

-           }
+             timeout(function () {
+               context.map().on('move.intro drawn.intro', function () {
+                 var entity = context.hasEntity(_pointID);
+                 if (!entity) return chapter.restart();
+                 var box = pointBox(entity.loc, context);
+                 reveal(box, helpHtml('intro.points.reselect'), {
+                   duration: 0
+                 });
+               });
+             }, 600); // after reveal..

 
 

-           if (showImagery) {
-             debugData.push({
-               "class": 'orange',
-               label: 'imagery'
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'select') return;
+               continueTo(updatePoint);

              });
              });

-           }
+           }, msec + 100);

 
 

-           if (showTouchTargets) {
-             debugData.push({
-               "class": 'pink',
-               label: 'touchTargets'
-             });
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           if (showDownloaded) {
-             debugData.push({
-               "class": 'purple',
-               label: 'downloaded'
-             });
-           }
+         function updatePoint() {
+           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
+             return continueTo(reselectPoint);
+           } // reset pane, in case user happened to untag the point..

 
 

-           var legend = context.container().select('.main-content').selectAll('.debug-legend').data(debugData.length ? [0] : []);
-           legend.exit().remove();
-           legend = legend.enter().append('div').attr('class', 'fillD debug-legend').merge(legend);
-           var legendItems = legend.selectAll('.debug-legend-item').data(debugData, function (d) {
-             return d.label;
+
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+           context.on('exit.intro', function () {
+             continueTo(reselectPoint);

            });
            });

-           legendItems.exit().remove();
-           legendItems.enter().append('span').attr('class', function (d) {
-             return "debug-legend-item ".concat(d["class"]);
-           }).text(function (d) {
-             return d.label;
+           context.history().on('change.intro', function () {
+             continueTo(updateCloseEditor);

            });
            });

-           var layer = selection.selectAll('.layer-debug').data(showImagery || showDownloaded ? [0] : []);
-           layer.exit().remove();
-           layer = layer.enter().append('g').attr('class', 'layer-debug').merge(layer); // imagery
-
-           var extent = context.map().extent();
-           _mainFileFetcher.get('imagery').then(function (d) {
-             var hits = showImagery && d.query.bbox(extent.rectangle(), true) || [];
-             var features = hits.map(function (d) {
-               return d.features[d.id];
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.points.update'), {
+               tooltipClass: 'intro-points-describe'

              });
              });

-             var imagery = layer.selectAll('path.debug-imagery').data(features);
-             imagery.exit().remove();
-             imagery.enter().append('path').attr('class', 'debug-imagery debug orange');
-           })["catch"](function () {
-             /* ignore */
-           }); // downloaded
-
-           var osm = context.connection();
-           var dataDownloaded = [];
+           }, 400);

 
 

-           if (osm && showDownloaded) {
-             var rtree = osm.caches('get').tile.rtree;
-             dataDownloaded = rtree.all().map(function (bbox) {
-               return {
-                 type: 'Feature',
-                 properties: {
-                   id: bbox.id
-                 },
-                 geometry: {
-                   type: 'Polygon',
-                   coordinates: [[[bbox.minX, bbox.minY], [bbox.minX, bbox.maxY], [bbox.maxX, bbox.maxY], [bbox.maxX, bbox.minY], [bbox.minX, bbox.minY]]]
-                 }
-               };
-             });
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           var downloaded = layer.selectAll('path.debug-downloaded').data(showDownloaded ? dataDownloaded : []);
-           downloaded.exit().remove();
-           downloaded.enter().append('path').attr('class', 'debug-downloaded debug purple'); // update
+         function updateCloseEditor() {
+           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
+             return continueTo(reselectPoint);
+           } // reset pane, in case user happened to change it..

 
 

-           layer.selectAll('path').attr('d', svgPath(projection).geojson);
-         } // This looks strange because `enabled` methods on other layers are
-         // chainable getter/setters, and this one is just a getter.

 
 

+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+           context.on('exit.intro', function () {
+             continueTo(rightClickPoint);
+           });
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.points.update_close', {
+               button: icon('#iD-icon-close', 'inline')
+             }));
+           }, 500);

 
 

-         drawDebug.enabled = function () {
-           if (!arguments.length) {
-             return context.getDebug('tile') || context.getDebug('collision') || context.getDebug('imagery') || context.getDebug('target') || context.getDebug('downloaded');
-           } else {
-             return this;
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();

            }
            }

-         };
-
-         return drawDebug;
-       }
-
-       /*
-           A standalone SVG element that contains only a `defs` sub-element. To be
-           used once globally, since defs IDs must be unique within a document.
-       */
-
-       function svgDefs(context) {
-         var _defsSelection = select(null);
-
-         var _spritesheetIds = ['iD-sprite', 'maki-sprite', 'temaki-sprite', 'fa-sprite', 'community-sprite'];
-
-         function drawDefs(selection) {
-           _defsSelection = selection.append('defs'); // add markers
+         }

 
 

-           _defsSelection.append('marker').attr('id', 'ideditor-oneway-marker').attr('viewBox', '0 0 10 5').attr('refX', 2.5).attr('refY', 2.5).attr('markerWidth', 2).attr('markerHeight', 2).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'oneway-marker-path').attr('d', 'M 5,3 L 0,3 L 0,2 L 5,2 L 5,0 L 10,2.5 L 5,5 z').attr('stroke', 'none').attr('fill', '#000').attr('opacity', '0.75'); // SVG markers have to be given a colour where they're defined
-           // (they can't inherit it from the line they're attached to),
-           // so we need to manually define markers for each color of tag
-           // (also, it's slightly nicer if we can control the
-           // positioning for different tags)
+         function rightClickPoint() {
+           if (!_pointID) return chapter.restart();
+           var entity = context.hasEntity(_pointID);
+           if (!entity) return chapter.restart();
+           context.enter(modeBrowse(context));
+           var box = pointBox(entity.loc, context);
+           var textId = context.lastPointerType() === 'mouse' ? 'rightclick' : 'edit_menu_touch';
+           reveal(box, helpHtml('intro.points.' + textId), {
+             duration: 600
+           });
+           timeout(function () {
+             context.map().on('move.intro', function () {
+               var entity = context.hasEntity(_pointID);
+               if (!entity) return chapter.restart();
+               var box = pointBox(entity.loc, context);
+               reveal(box, helpHtml('intro.points.' + textId), {
+                 duration: 0
+               });
+             });
+           }, 600); // after reveal

 
 

+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'select') return;
+             var ids = context.selectedIDs();
+             if (ids.length !== 1 || ids[0] !== _pointID) return;
+             timeout(function () {
+               var node = selectMenuItem(context, 'delete').node();
+               if (!node) return;
+               continueTo(enterDelete);
+             }, 50); // after menu visible
+           });

 
 

-           function addSidedMarker(name, color, offset) {
-             _defsSelection.append('marker').attr('id', 'ideditor-sided-marker-' + name).attr('viewBox', '0 0 2 2').attr('refX', 1).attr('refY', -offset).attr('markerWidth', 1.5).attr('markerHeight', 1.5).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'sided-marker-path sided-marker-' + name + '-path').attr('d', 'M 0,0 L 1,1 L 2,0 z').attr('stroke', 'none').attr('fill', color);
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           addSidedMarker('natural', 'rgb(170, 170, 170)', 0); // for a coastline, the arrows are (somewhat unintuitively) on
-           // the water side, so let's color them blue (with a gap) to
-           // give a stronger indication
-
-           addSidedMarker('coastline', '#77dede', 1);
-           addSidedMarker('waterway', '#77dede', 1); // barriers have a dashed line, and separating the triangle
-           // from the line visually suits that
-
-           addSidedMarker('barrier', '#ddd', 1);
-           addSidedMarker('man_made', '#fff', 0);
+         function enterDelete() {
+           if (!_pointID) return chapter.restart();
+           var entity = context.hasEntity(_pointID);
+           if (!entity) return chapter.restart();
+           var node = selectMenuItem(context, 'delete').node();

 
 

-           _defsSelection.append('marker').attr('id', 'ideditor-viewfield-marker').attr('viewBox', '0 0 16 16').attr('refX', 8).attr('refY', 16).attr('markerWidth', 4).attr('markerHeight', 4).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'viewfield-marker-path').attr('d', 'M 6,14 C 8,13.4 8,13.4 10,14 L 16,3 C 12,0 4,0 0,3 z').attr('fill', '#333').attr('fill-opacity', '0.75').attr('stroke', '#fff').attr('stroke-width', '0.5px').attr('stroke-opacity', '0.75');
+           if (!node) {
+             return continueTo(rightClickPoint);
+           }

 
 

-           _defsSelection.append('marker').attr('id', 'ideditor-viewfield-marker-wireframe').attr('viewBox', '0 0 16 16').attr('refX', 8).attr('refY', 16).attr('markerWidth', 4).attr('markerHeight', 4).attr('markerUnits', 'strokeWidth').attr('orient', 'auto').append('path').attr('class', 'viewfield-marker-path').attr('d', 'M 6,14 C 8,13.4 8,13.4 10,14 L 16,3 C 12,0 4,0 0,3 z').attr('fill', 'none').attr('stroke', '#fff').attr('stroke-width', '0.5px').attr('stroke-opacity', '0.75'); // add patterns
+           reveal('.edit-menu', helpHtml('intro.points.delete'), {
+             padding: 50
+           });
+           timeout(function () {
+             context.map().on('move.intro', function () {
+               reveal('.edit-menu', helpHtml('intro.points.delete'), {
+                 duration: 0,
+                 padding: 50
+               });
+             });
+           }, 300); // after menu visible

 
 

+           context.on('exit.intro', function () {
+             if (!_pointID) return chapter.restart();
+             var entity = context.hasEntity(_pointID);
+             if (entity) return continueTo(rightClickPoint); // point still exists
+           });
+           context.history().on('change.intro', function (changed) {
+             if (changed.deleted().length) {
+               continueTo(undo);
+             }
+           });

 
 

-           var patterns = _defsSelection.selectAll('pattern').data([// pattern name, pattern image name
-           ['beach', 'dots'], ['construction', 'construction'], ['cemetery', 'cemetery'], ['cemetery_christian', 'cemetery_christian'], ['cemetery_buddhist', 'cemetery_buddhist'], ['cemetery_muslim', 'cemetery_muslim'], ['cemetery_jewish', 'cemetery_jewish'], ['farmland', 'farmland'], ['farmyard', 'farmyard'], ['forest', 'forest'], ['forest_broadleaved', 'forest_broadleaved'], ['forest_needleleaved', 'forest_needleleaved'], ['forest_leafless', 'forest_leafless'], ['golf_green', 'grass'], ['grass', 'grass'], ['landfill', 'landfill'], ['meadow', 'grass'], ['orchard', 'orchard'], ['pond', 'pond'], ['quarry', 'quarry'], ['scrub', 'bushes'], ['vineyard', 'vineyard'], ['water_standing', 'lines'], ['waves', 'waves'], ['wetland', 'wetland'], ['wetland_marsh', 'wetland_marsh'], ['wetland_swamp', 'wetland_swamp'], ['wetland_bog', 'wetland_bog'], ['wetland_reedbed', 'wetland_reedbed']]).enter().append('pattern').attr('id', function (d) {
-             return 'ideditor-pattern-' + d[0];
-           }).attr('width', 32).attr('height', 32).attr('patternUnits', 'userSpaceOnUse');
+           function continueTo(nextStep) {
+             context.map().on('move.intro', null);
+             context.history().on('change.intro', null);
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         }

 
 

-           patterns.append('rect').attr('x', 0).attr('y', 0).attr('width', 32).attr('height', 32).attr('class', function (d) {
-             return 'pattern-color-' + d[0];
+         function undo() {
+           context.history().on('change.intro', function () {
+             continueTo(play);

            });
            });

-           patterns.append('image').attr('x', 0).attr('y', 0).attr('width', 32).attr('height', 32).attr('xlink:href', function (d) {
-             return context.imagePath('pattern/' + d[1] + '.png');
-           }); // add clip paths
-
-           _defsSelection.selectAll('clipPath').data([12, 18, 20, 32, 45]).enter().append('clipPath').attr('id', function (d) {
-             return 'ideditor-clip-square-' + d;
-           }).append('rect').attr('x', 0).attr('y', 0).attr('width', function (d) {
-             return d;
-           }).attr('height', function (d) {
-             return d;
-           }); // add symbol spritesheets
+           reveal('.top-toolbar button.undo-button', helpHtml('intro.points.undo'));

 
 

+           function continueTo(nextStep) {
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-           addSprites(_spritesheetIds, true);
+         function play() {
+           dispatch.call('done');
+           reveal('.ideditor', helpHtml('intro.points.play', {
+             next: _t('intro.areas.title')
+           }), {
+             tooltipBox: '.intro-nav-wrap .chapter-area',
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               reveal('.ideditor');
+             }
+           });

          }
 
          }
 

-         function addSprites(ids, overrideColors) {
-           _spritesheetIds = utilArrayUniq(_spritesheetIds.concat(ids));
-
-           var spritesheets = _defsSelection.selectAll('.spritesheet').data(_spritesheetIds);
+         chapter.enter = function () {
+           addPoint();
+         };

 
 

-           spritesheets.enter().append('g').attr('class', function (d) {
-             return 'spritesheet spritesheet-' + d;
-           }).each(function (d) {
-             var url = context.imagePath(d + '.svg');
-             var node = select(this).node();
-             svg(url).then(function (svg) {
-               node.appendChild(select(svg.documentElement).attr('id', 'ideditor-' + d).node());
+         chapter.exit = function () {
+           timeouts.forEach(window.clearTimeout);
+           context.on('enter.intro exit.intro', null);
+           context.map().on('move.intro drawn.intro', null);
+           context.history().on('change.intro', null);
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+         };

 
 

-               if (overrideColors && d !== 'iD-sprite') {
-                 // allow icon colors to be overridden..
-                 select(node).selectAll('path').attr('fill', 'currentColor');
-               }
-             })["catch"](function () {
-               /* ignore */
-             });
-           });
-           spritesheets.exit().remove();
-         }
+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();
+         };

 
 

-         drawDefs.addSprites = addSprites;
-         return drawDefs;
+         return utilRebind(chapter, dispatch, 'on');

        }
 
        }
 

-       var _layerEnabled = false;
+       function uiIntroArea(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var playground = [-85.63552, 41.94159];
+         var playgroundPreset = _mainPresetIndex.item('leisure/playground');
+         var nameField = _mainPresetIndex.field('name');
+         var descriptionField = _mainPresetIndex.field('description');
+         var timeouts = [];

 
 

-       var _qaService;
+         var _areaID;

 
 

-       function svgKeepRight(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           return dispatch.call('change');
-         }, 1000);
+         var chapter = {
+           title: 'intro.areas.title'
+         };

 
 

-         var minZoom = 12;
-         var touchLayer = select(null);
-         var drawLayer = select(null);
-         var layerVisible = false;
+         function timeout(f, t) {
+           timeouts.push(window.setTimeout(f, t));
+         }

 
 

-         function markerPath(selection, klass) {
-           selection.attr('class', klass).attr('transform', 'translate(-4, -24)').attr('d', 'M11.6,6.2H7.1l1.4-5.1C8.6,0.6,8.1,0,7.5,0H2.2C1.7,0,1.3,0.3,1.3,0.8L0,10.2c-0.1,0.6,0.4,1.1,0.9,1.1h4.6l-1.8,7.6C3.6,19.4,4.1,20,4.7,20c0.3,0,0.6-0.2,0.8-0.5l6.9-11.9C12.7,7,12.3,6.2,11.6,6.2z');
-         } // Loosely-coupled keepRight service for fetching issues.
+         function eventCancel(d3_event) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+         }

 
 

+         function revealPlayground(center, text, options) {
+           var padding = 180 * Math.pow(2, context.map().zoom() - 19.5);
+           var box = pad(center, padding, context);
+           reveal(box, text, options);
+         }

 
 

-         function getService() {
-           if (services.keepRight && !_qaService) {
-             _qaService = services.keepRight;
+         function addArea() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           _areaID = null;
+           var msec = transitionTime(playground, context.map().center());

 
 

-             _qaService.on('loaded', throttledRedraw);
-           } else if (!services.keepRight && _qaService) {
-             _qaService = null;
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });

            }
 
            }
 

-           return _qaService;
-         } // Show the markers
+           context.map().centerZoomEase(playground, 19, msec);
+           timeout(function () {
+             var tooltip = reveal('button.add-area', helpHtml('intro.areas.add_playground'));
+             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-areas');
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'add-area') return;
+               continueTo(startPlayground);
+             });
+           }, msec + 100);

 
 

+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-         function editOn() {
-           if (!layerVisible) {
-             layerVisible = true;
-             drawLayer.style('display', 'block');
+         function startPlayground() {
+           if (context.mode().id !== 'add-area') {
+             return chapter.restart();

            }
            }

-         } // Immediately remove the markers and their touch targets

 
 

+           _areaID = null;
+           context.map().zoomEase(19.5, 500);
+           timeout(function () {
+             var textId = context.lastPointerType() === 'mouse' ? 'starting_node_click' : 'starting_node_tap';
+             var startDrawString = helpHtml('intro.areas.start_playground') + helpHtml('intro.areas.' + textId);
+             revealPlayground(playground, startDrawString, {
+               duration: 250
+             });
+             timeout(function () {
+               context.map().on('move.intro drawn.intro', function () {
+                 revealPlayground(playground, startDrawString, {
+                   duration: 0
+                 });
+               });
+               context.on('enter.intro', function (mode) {
+                 if (mode.id !== 'draw-area') return chapter.restart();
+                 continueTo(continuePlayground);
+               });
+             }, 250); // after reveal
+           }, 550); // after easing

 
 

-         function editOff() {
-           if (layerVisible) {
-             layerVisible = false;
-             drawLayer.style('display', 'none');
-             drawLayer.selectAll('.qaItem.keepRight').remove();
-             touchLayer.selectAll('.qaItem.keepRight').remove();
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

-         } // Enable the layer.  This shows the markers and transitions them to visible.
+         }

 
 

+         function continuePlayground() {
+           if (context.mode().id !== 'draw-area') {
+             return chapter.restart();
+           }

 
 

-         function layerOn() {
-           editOn();
-           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
-             return dispatch.call('change');
+           _areaID = null;
+           revealPlayground(playground, helpHtml('intro.areas.continue_playground'), {
+             duration: 250

            });
            });

-         } // Disable the layer.  This transitions the layer invisible and then hides the markers.
+           timeout(function () {
+             context.map().on('move.intro drawn.intro', function () {
+               revealPlayground(playground, helpHtml('intro.areas.continue_playground'), {
+                 duration: 0
+               });
+             });
+           }, 250); // after reveal

 
 

+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-area') {
+               var entity = context.hasEntity(context.selectedIDs()[0]);

 
 

-         function layerOff() {
-           throttledRedraw.cancel();
-           drawLayer.interrupt();
-           touchLayer.selectAll('.qaItem.keepRight').remove();
-           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
-             editOff();
-             dispatch.call('change');
+               if (entity && entity.nodes.length >= 6) {
+                 return continueTo(finishPlayground);
+               } else {
+                 return;
+               }
+             } else if (mode.id === 'select') {
+               _areaID = context.selectedIDs()[0];
+               return continueTo(searchPresets);
+             } else {
+               return chapter.restart();
+             }

            });
            });

-         } // Update the issue markers
-

 
 

-         function updateMarkers() {
-           if (!layerVisible || !_layerEnabled) return;
-           var service = getService();
-           var selectedID = context.selectedErrorID();
-           var data = service ? service.getItems(projection) : [];
-           var getTransform = svgPointTransform(projection); // Draw markers..
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-           var markers = drawLayer.selectAll('.qaItem.keepRight').data(data, function (d) {
-             return d.id;
-           }); // exit
+         function finishPlayground() {
+           if (context.mode().id !== 'draw-area') {
+             return chapter.restart();
+           }

 
 

-           markers.exit().remove(); // enter
+           _areaID = null;
+           var finishString = helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.areas.finish_playground');
+           revealPlayground(playground, finishString, {
+             duration: 250
+           });
+           timeout(function () {
+             context.map().on('move.intro drawn.intro', function () {
+               revealPlayground(playground, finishString, {
+                 duration: 0
+               });
+             });
+           }, 250); // after reveal

 
 

-           var markersEnter = markers.enter().append('g').attr('class', function (d) {
-             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.parentIssueType);
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-area') {
+               return;
+             } else if (mode.id === 'select') {
+               _areaID = context.selectedIDs()[0];
+               return continueTo(searchPresets);
+             } else {
+               return chapter.restart();
+             }

            });
            });

-           markersEnter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
-           markersEnter.append('path').call(markerPath, 'shadow');
-           markersEnter.append('use').attr('class', 'qaItem-fill').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').attr('xlink:href', '#iD-icon-bolt'); // update

 
 

-           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
-             return d.id === selectedID;
-           }).attr('transform', getTransform); // Draw targets..
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-           if (touchLayer.empty()) return;
-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var targets = touchLayer.selectAll('.qaItem.keepRight').data(data, function (d) {
-             return d.id;
-           }); // exit
+         function searchPresets() {
+           if (!_areaID || !context.hasEntity(_areaID)) {
+             return addArea();
+           }

 
 

-           targets.exit().remove(); // enter/update
+           var ids = context.selectedIDs();

 
 

-           targets.enter().append('rect').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').merge(targets).sort(sortY).attr('class', function (d) {
-             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
-           }).attr('transform', getTransform);
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
+             context.enter(modeSelect(context, [_areaID]));
+           } // disallow scrolling

 
 

-           function sortY(a, b) {
-             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : a.severity === 'error' && b.severity !== 'error' ? 1 : b.severity === 'error' && a.severity !== 'error' ? -1 : b.loc[1] - a.loc[1];
-           }
-         } // Draw the keepRight layer and schedule loading issues and updating markers.

 
 

+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
+             context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+             reveal('.preset-search-input', helpHtml('intro.areas.search_playground', {
+               preset: playgroundPreset.name()
+             }));
+           }, 400); // after preset list pane visible..

 
 

-         function drawKeepRight(selection) {
-           var service = getService();
-           var surface = context.surface();
+           context.on('enter.intro', function (mode) {
+             if (!_areaID || !context.hasEntity(_areaID)) {
+               return continueTo(addArea);
+             }

 
 

-           if (surface && !surface.empty()) {
-             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
-           }
+             var ids = context.selectedIDs();

 
 

-           drawLayer = selection.selectAll('.layer-keepRight').data(service ? [0] : []);
-           drawLayer.exit().remove();
-           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-keepRight').style('display', _layerEnabled ? 'block' : 'none').merge(drawLayer);
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _areaID) {
+               // keep the user's area selected..
+               context.enter(modeSelect(context, [_areaID])); // reset pane, in case user somehow happened to change it..

 
 

-           if (_layerEnabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               service.loadIssues(projection);
-               updateMarkers();
-             } else {
-               editOff();
+               context.container().select('.inspector-wrap .panewrap').style('right', '-100%'); // disallow scrolling
+
+               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+               reveal('.preset-search-input', helpHtml('intro.areas.search_playground', {
+                 preset: playgroundPreset.name()
+               }));
+               context.history().on('change.intro', null);
+             }
+           });
+
+           function checkPresetSearch() {
+             var first = context.container().select('.preset-list-item:first-child');
+
+             if (first.classed('preset-leisure-playground')) {
+               reveal(first.select('.preset-list-button').node(), helpHtml('intro.areas.choose_playground', {
+                 preset: playgroundPreset.name()
+               }), {
+                 duration: 300
+               });
+               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
+               context.history().on('change.intro', function () {
+                 continueTo(clickAddField);
+               });

              }
            }
              }
            }

-         } // Toggles the layer on and off

 
 

+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+             nextStep();
+           }
+         }

 
 

-         drawKeepRight.enabled = function (val) {
-           if (!arguments.length) return _layerEnabled;
-           _layerEnabled = val;
+         function clickAddField() {
+           if (!_areaID || !context.hasEntity(_areaID)) {
+             return addArea();
+           }

 
 

-           if (_layerEnabled) {
-             layerOn();
-           } else {
-             layerOff();
+           var ids = context.selectedIDs();

 
 

-             if (context.selectedErrorID()) {
-               context.enter(modeBrowse(context));
-             }
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
+             return searchPresets();

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
+           if (!context.container().select('.form-field-description').empty()) {
+             return continueTo(describePlayground);
+           } // disallow scrolling

 
 

-         drawKeepRight.supported = function () {
-           return !!getService();
-         };

 
 

-         return drawKeepRight;
-       }
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // It's possible for the user to add a description in a previous step..
+             // If they did this already, just continue to next step.

 
 

-       function svgGeolocate(projection) {
-         var layer = select(null);
+             var entity = context.entity(_areaID);

 
 

-         var _position;
+             if (entity.tags.description) {
+               return continueTo(play);
+             } // scroll "Add field" into view

 
 

-         function init() {
-           if (svgGeolocate.initialized) return; // run once

 
 

-           svgGeolocate.enabled = false;
-           svgGeolocate.initialized = true;
-         }
+             var box = context.container().select('.more-fields').node().getBoundingClientRect();

 
 

-         function showLayer() {
-           layer.style('display', 'block');
-         }
+             if (box.top > 300) {
+               var pane = context.container().select('.entity-editor-pane .inspector-body');
+               var start = pane.node().scrollTop;
+               var end = start + (box.top - 300);
+               pane.transition().duration(250).tween('scroll.inspector', function () {
+                 var node = this;
+                 var i = d3_interpolateNumber(start, end);
+                 return function (t) {
+                   node.scrollTop = i(t);
+                 };
+               });
+             }

 
 

-         function hideLayer() {
-           layer.transition().duration(250).style('opacity', 0);
-         }
+             timeout(function () {
+               reveal('.more-fields .combobox-input', helpHtml('intro.areas.add_field', {
+                 name: nameField.label(),
+                 description: descriptionField.label()
+               }), {
+                 duration: 300
+               });
+               context.container().select('.more-fields .combobox-input').on('click.intro', function () {
+                 // Watch for the combobox to appear...
+                 var watcher;
+                 watcher = window.setInterval(function () {
+                   if (!context.container().select('div.combobox').empty()) {
+                     window.clearInterval(watcher);
+                     continueTo(chooseDescriptionField);
+                   }
+                 }, 300);
+               });
+             }, 300); // after "Add Field" visible
+           }, 400); // after editor pane visible

 
 

-         function layerOn() {
-           layer.style('opacity', 0).transition().duration(250).style('opacity', 1);
-         }
+           context.on('exit.intro', function () {
+             return continueTo(searchPresets);
+           });

 
 

-         function layerOff() {
-           layer.style('display', 'none');
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.more-fields .combobox-input').on('click.intro', null);
+             context.on('exit.intro', null);
+             nextStep();
+           }

          }
 
          }
 

-         function transform(d) {
-           return svgPointTransform(projection)(d);
-         }
+         function chooseDescriptionField() {
+           if (!_areaID || !context.hasEntity(_areaID)) {
+             return addArea();
+           }

 
 

-         function accuracy(accuracy, loc) {
-           // converts accuracy to pixels...
-           var degreesRadius = geoMetersToLat(accuracy),
-               tangentLoc = [loc[0], loc[1] + degreesRadius],
-               projectedTangent = projection(tangentLoc),
-               projectedLoc = projection([loc[0], loc[1]]); // southern most point will have higher pixel value...
+           var ids = context.selectedIDs();

 
 

-           return Math.round(projectedLoc[1] - projectedTangent[1]).toString();
-         }
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
+             return searchPresets();
+           }

 
 

-         function update() {
-           var geolocation = {
-             loc: [_position.coords.longitude, _position.coords.latitude]
-           };
-           var groups = layer.selectAll('.geolocations').selectAll('.geolocation').data([geolocation]);
-           groups.exit().remove();
-           var pointsEnter = groups.enter().append('g').attr('class', 'geolocation');
-           pointsEnter.append('circle').attr('class', 'geolocate-radius').attr('dx', '0').attr('dy', '0').attr('fill', 'rgb(15,128,225)').attr('fill-opacity', '0.3').attr('r', '0');
-           pointsEnter.append('circle').attr('dx', '0').attr('dy', '0').attr('fill', 'rgb(15,128,225)').attr('stroke', 'white').attr('stroke-width', '1.5').attr('r', '6');
-           groups.merge(pointsEnter).attr('transform', transform);
-           layer.select('.geolocate-radius').attr('r', accuracy(_position.coords.accuracy, geolocation.loc));
-         }
+           if (!context.container().select('.form-field-description').empty()) {
+             return continueTo(describePlayground);
+           } // Make sure combobox is ready..

 
 

-         function drawLocation(selection) {
-           var enabled = svgGeolocate.enabled;
-           layer = selection.selectAll('.layer-geolocate').data([0]);
-           layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-geolocate').style('display', enabled ? 'block' : 'none');
-           layerEnter.append('g').attr('class', 'geolocations');
-           layer = layerEnter.merge(layer);

 
 

-           if (enabled) {
-             update();
-           } else {
-             layerOff();
-           }
-         }
+           if (context.container().select('div.combobox').empty()) {
+             return continueTo(clickAddField);
+           } // Watch for the combobox to go away..

 
 

-         drawLocation.enabled = function (position, enabled) {
-           if (!arguments.length) return svgGeolocate.enabled;
-           _position = position;
-           svgGeolocate.enabled = enabled;

 
 

-           if (svgGeolocate.enabled) {
-             showLayer();
-             layerOn();
-           } else {
-             hideLayer();
+           var watcher;
+           watcher = window.setInterval(function () {
+             if (context.container().select('div.combobox').empty()) {
+               window.clearInterval(watcher);
+               timeout(function () {
+                 if (context.container().select('.form-field-description').empty()) {
+                   continueTo(retryChooseDescription);
+                 } else {
+                   continueTo(describePlayground);
+                 }
+               }, 300); // after description field added.
+             }
+           }, 300);
+           reveal('div.combobox', helpHtml('intro.areas.choose_field', {
+             field: descriptionField.label()
+           }), {
+             duration: 300
+           });
+           context.on('exit.intro', function () {
+             return continueTo(searchPresets);
+           });
+
+           function continueTo(nextStep) {
+             if (watcher) window.clearInterval(watcher);
+             context.on('exit.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           return this;
-         };
-
-         init();
-         return drawLocation;
-       }
+         function describePlayground() {
+           if (!_areaID || !context.hasEntity(_areaID)) {
+             return addArea();
+           }

 
 

-       function svgLabels(projection, context) {
-         var path = d3_geoPath(projection);
-         var detected = utilDetect();
-         var baselineHack = detected.ie || detected.browser.toLowerCase() === 'edge' || detected.browser.toLowerCase() === 'firefox' && detected.version >= 70;
+           var ids = context.selectedIDs();

 
 

-         var _rdrawn = new RBush();
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
+             return searchPresets();
+           } // reset pane, in case user happened to change it..

 
 

-         var _rskipped = new RBush();

 
 

-         var _textWidthCache = {};
-         var _entitybboxes = {}; // Listed from highest to lowest priority
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');

 
 

-         var labelStack = [['line', 'aeroway', '*', 12], ['line', 'highway', 'motorway', 12], ['line', 'highway', 'trunk', 12], ['line', 'highway', 'primary', 12], ['line', 'highway', 'secondary', 12], ['line', 'highway', 'tertiary', 12], ['line', 'highway', '*', 12], ['line', 'railway', '*', 12], ['line', 'waterway', '*', 12], ['area', 'aeroway', '*', 12], ['area', 'amenity', '*', 12], ['area', 'building', '*', 12], ['area', 'historic', '*', 12], ['area', 'leisure', '*', 12], ['area', 'man_made', '*', 12], ['area', 'natural', '*', 12], ['area', 'shop', '*', 12], ['area', 'tourism', '*', 12], ['area', 'camp_site', '*', 12], ['point', 'aeroway', '*', 10], ['point', 'amenity', '*', 10], ['point', 'building', '*', 10], ['point', 'historic', '*', 10], ['point', 'leisure', '*', 10], ['point', 'man_made', '*', 10], ['point', 'natural', '*', 10], ['point', 'shop', '*', 10], ['point', 'tourism', '*', 10], ['point', 'camp_site', '*', 10], ['line', 'name', '*', 12], ['area', 'name', '*', 12], ['point', 'name', '*', 10]];
+           if (context.container().select('.form-field-description').empty()) {
+             return continueTo(retryChooseDescription);
+           }

 
 

-         function shouldSkipIcon(preset) {
-           var noIcons = ['building', 'landuse', 'natural'];
-           return noIcons.some(function (s) {
-             return preset.id.indexOf(s) >= 0;
+           context.on('exit.intro', function () {
+             continueTo(play);
+           });
+           reveal('.entity-editor-pane', helpHtml('intro.areas.describe_playground', {
+             button: icon('#iD-icon-close', 'inline')
+           }), {
+             duration: 300

            });
            });

-         }

 
 

-         function get(array, prop) {
-           return function (d, i) {
-             return array[i][prop];
-           };
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();
+           }

          }
 
          }
 

-         function textWidth(text, size, elem) {
-           var c = _textWidthCache[size];
-           if (!c) c = _textWidthCache[size] = {};
+         function retryChooseDescription() {
+           if (!_areaID || !context.hasEntity(_areaID)) {
+             return addArea();
+           }

 
 

-           if (c[text]) {
-             return c[text];
-           } else if (elem) {
-             c[text] = elem.getComputedTextLength();
-             return c[text];
-           } else {
-             var str = encodeURIComponent(text).match(/%[CDEFcdef]/g);
+           var ids = context.selectedIDs();

 
 

-             if (str === null) {
-               return size / 3 * 2 * text.length;
-             } else {
-               return size / 3 * (2 * text.length + str.length);
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
+             return searchPresets();
+           } // reset pane, in case user happened to change it..
+
+
+           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+           reveal('.entity-editor-pane', helpHtml('intro.areas.retry_add_field', {
+             field: descriptionField.label()
+           }), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(clickAddField);

              }
              }

+           });
+           context.on('exit.intro', function () {
+             return continueTo(searchPresets);
+           });
+
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();

            }
          }
 
            }
          }
 

-         function drawLinePaths(selection, entities, filter, classes, labels) {
-           var paths = selection.selectAll('path').filter(filter).data(entities, osmEntity.key); // exit
+         function play() {
+           dispatch.call('done');
+           reveal('.ideditor', helpHtml('intro.areas.play', {
+             next: _t('intro.lines.title')
+           }), {
+             tooltipBox: '.intro-nav-wrap .chapter-line',
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               reveal('.ideditor');
+             }
+           });
+         }

 
 

-           paths.exit().remove(); // enter/update
+         chapter.enter = function () {
+           addArea();
+         };

 
 

-           paths.enter().append('path').style('stroke-width', get(labels, 'font-size')).attr('id', function (d) {
-             return 'ideditor-labelpath-' + d.id;
-           }).attr('class', classes).merge(paths).attr('d', get(labels, 'lineString'));
-         }
+         chapter.exit = function () {
+           timeouts.forEach(window.clearTimeout);
+           context.on('enter.intro exit.intro', null);
+           context.map().on('move.intro drawn.intro', null);
+           context.history().on('change.intro', null);
+           context.container().select('.inspector-wrap').on('wheel.intro', null);
+           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+           context.container().select('.more-fields .combobox-input').on('click.intro', null);
+         };

 
 

-         function drawLineLabels(selection, entities, filter, classes, labels) {
-           var texts = selection.selectAll('text.' + classes).filter(filter).data(entities, osmEntity.key); // exit
+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();
+         };

 
 

-           texts.exit().remove(); // enter
+         return utilRebind(chapter, dispatch, 'on');
+       }

 
 

-           texts.enter().append('text').attr('class', function (d, i) {
-             return classes + ' ' + labels[i].classes + ' ' + d.id;
-           }).attr('dy', baselineHack ? '0.35em' : null).append('textPath').attr('class', 'textpath'); // update
+       function uiIntroLine(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var timeouts = [];
+         var _tulipRoadID = null;
+         var flowerRoadID = 'w646';
+         var tulipRoadStart = [-85.6297754121684, 41.95805253325314];
+         var tulipRoadMidpoint = [-85.62975395449628, 41.95787501510204];
+         var tulipRoadIntersection = [-85.62974496187628, 41.95742515554585];
+         var roadCategory = _mainPresetIndex.item('category-road_minor');
+         var residentialPreset = _mainPresetIndex.item('highway/residential');
+         var woodRoadID = 'w525';
+         var woodRoadEndID = 'n2862';
+         var woodRoadAddNode = [-85.62390110349587, 41.95397111462291];
+         var woodRoadDragEndpoint = [-85.623867390213, 41.95466987786487];
+         var woodRoadDragMidpoint = [-85.62386254803509, 41.95430395953872];
+         var washingtonStreetID = 'w522';
+         var twelfthAvenueID = 'w1';
+         var eleventhAvenueEndID = 'n3550';
+         var twelfthAvenueEndID = 'n5';
+         var _washingtonSegmentID = null;
+         var eleventhAvenueEnd = context.entity(eleventhAvenueEndID).loc;
+         var twelfthAvenueEnd = context.entity(twelfthAvenueEndID).loc;
+         var deleteLinesLoc = [-85.6219395542764, 41.95228033922477];
+         var twelfthAvenue = [-85.62219310052491, 41.952505413152956];
+         var chapter = {
+           title: 'intro.lines.title'
+         };

 
 

-           selection.selectAll('text.' + classes).selectAll('.textpath').filter(filter).data(entities, osmEntity.key).attr('startOffset', '50%').attr('xlink:href', function (d) {
-             return '#ideditor-labelpath-' + d.id;
-           }).text(utilDisplayNameForPath);
+         function timeout(f, t) {
+           timeouts.push(window.setTimeout(f, t));

          }
 
          }
 

-         function drawPointLabels(selection, entities, filter, classes, labels) {
-           var texts = selection.selectAll('text.' + classes).filter(filter).data(entities, osmEntity.key); // exit
+         function eventCancel(d3_event) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+         }

 
 

-           texts.exit().remove(); // enter/update
+         function addLine() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           var msec = transitionTime(tulipRoadStart, context.map().center());

 
 

-           texts.enter().append('text').attr('class', function (d, i) {
-             return classes + ' ' + labels[i].classes + ' ' + d.id;
-           }).merge(texts).attr('x', get(labels, 'x')).attr('y', get(labels, 'y')).style('text-anchor', get(labels, 'textAnchor')).text(utilDisplayName).each(function (d, i) {
-             textWidth(utilDisplayName(d), labels[i].height, this);
-           });
-         }
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });
+           }

 
 

-         function drawAreaLabels(selection, entities, filter, classes, labels) {
-           entities = entities.filter(hasText);
-           labels = labels.filter(hasText);
-           drawPointLabels(selection, entities, filter, classes, labels);
+           context.map().centerZoomEase(tulipRoadStart, 18.5, msec);
+           timeout(function () {
+             var tooltip = reveal('button.add-line', helpHtml('intro.lines.add_line'));
+             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-lines');
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'add-line') return;
+               continueTo(startLine);
+             });
+           }, msec + 100);

 
 

-           function hasText(d, i) {
-             return labels[i].hasOwnProperty('x') && labels[i].hasOwnProperty('y');
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();

            }
          }
 
            }
          }
 

-         function drawAreaIcons(selection, entities, filter, classes, labels) {
-           var icons = selection.selectAll('use.' + classes).filter(filter).data(entities, osmEntity.key); // exit
+         function startLine() {
+           if (context.mode().id !== 'add-line') return chapter.restart();
+           _tulipRoadID = null;
+           var padding = 70 * Math.pow(2, context.map().zoom() - 18);
+           var box = pad(tulipRoadStart, padding, context);
+           box.height = box.height + 100;
+           var textId = context.lastPointerType() === 'mouse' ? 'start_line' : 'start_line_tap';
+           var startLineString = helpHtml('intro.lines.missing_road') + '{br}' + helpHtml('intro.lines.line_draw_info') + helpHtml('intro.lines.' + textId);
+           reveal(box, startLineString);
+           context.map().on('move.intro drawn.intro', function () {
+             padding = 70 * Math.pow(2, context.map().zoom() - 18);
+             box = pad(tulipRoadStart, padding, context);
+             box.height = box.height + 100;
+             reveal(box, startLineString, {
+               duration: 0
+             });
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'draw-line') return chapter.restart();
+             continueTo(drawLine);
+           });

 
 

-           icons.exit().remove(); // enter/update
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-           icons.enter().append('use').attr('class', 'icon ' + classes).attr('width', '17px').attr('height', '17px').merge(icons).attr('transform', get(labels, 'transform')).attr('xlink:href', function (d) {
-             var preset = _mainPresetIndex.match(d, context.graph());
-             var picon = preset && preset.icon;
+         function drawLine() {
+           if (context.mode().id !== 'draw-line') return chapter.restart();
+           _tulipRoadID = context.mode().selectedIDs()[0];
+           context.map().centerEase(tulipRoadMidpoint, 500);
+           timeout(function () {
+             var padding = 200 * Math.pow(2, context.map().zoom() - 18.5);
+             var box = pad(tulipRoadMidpoint, padding, context);
+             box.height = box.height * 2;
+             reveal(box, helpHtml('intro.lines.intersect', {
+               name: _t('intro.graph.name.flower-street')
+             }));
+             context.map().on('move.intro drawn.intro', function () {
+               padding = 200 * Math.pow(2, context.map().zoom() - 18.5);
+               box = pad(tulipRoadMidpoint, padding, context);
+               box.height = box.height * 2;
+               reveal(box, helpHtml('intro.lines.intersect', {
+                 name: _t('intro.graph.name.flower-street')
+               }), {
+                 duration: 0
+               });
+             });
+           }, 550); // after easing..

 
 

-             if (!picon) {
-               return '';
+           context.history().on('change.intro', function () {
+             if (isLineConnected()) {
+               continueTo(continueLine);
+             }
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-line') {
+               return;
+             } else if (mode.id === 'select') {
+               continueTo(retryIntersect);
+               return;

              } else {
              } else {

-               var isMaki = /^maki-/.test(picon);
-               return '#' + picon + (isMaki ? '-15' : '');
+               return chapter.restart();

              }
            });
              }
            });

-         }
-
-         function drawCollisionBoxes(selection, rtree, which) {
-           var classes = 'debug ' + which + ' ' + (which === 'debug-skipped' ? 'orange' : 'yellow');
-           var gj = [];

 
 

-           if (context.getDebug('collision')) {
-             gj = rtree.all().map(function (d) {
-               return {
-                 type: 'Polygon',
-                 coordinates: [[[d.minX, d.minY], [d.maxX, d.minY], [d.maxX, d.maxY], [d.minX, d.maxY], [d.minX, d.minY]]]
-               };
-             });
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

-
-           var boxes = selection.selectAll('.' + which).data(gj); // exit
-
-           boxes.exit().remove(); // enter/update
-
-           boxes.enter().append('path').attr('class', classes).merge(boxes).attr('d', d3_geoPath());

          }
 
          }
 

-         function drawLabels(selection, graph, entities, filter, dimensions, fullRedraw) {
-           var wireframe = context.surface().classed('fill-wireframe');
-           var zoom = geoScaleToZoom(projection.scale());
-           var labelable = [];
-           var renderNodeAs = {};
-           var i, j, k, entity, geometry;
-
-           for (i = 0; i < labelStack.length; i++) {
-             labelable.push([]);
-           }
+         function isLineConnected() {
+           var entity = _tulipRoadID && context.hasEntity(_tulipRoadID);

 
 

-           if (fullRedraw) {
-             _rdrawn.clear();
+           if (!entity) return false;
+           var drawNodes = context.graph().childNodes(entity);
+           return drawNodes.some(function (node) {
+             return context.graph().parentWays(node).some(function (parent) {
+               return parent.id === flowerRoadID;
+             });
+           });
+         }

 
 

-             _rskipped.clear();
+         function retryIntersect() {
+           select(window).on('pointerdown.intro mousedown.intro', eventCancel, true);
+           var box = pad(tulipRoadIntersection, 80, context);
+           reveal(box, helpHtml('intro.lines.retry_intersect', {
+             name: _t('intro.graph.name.flower-street')
+           }));
+           timeout(chapter.restart, 3000);
+         }

 
 

-             _entitybboxes = {};
-           } else {
-             for (i = 0; i < entities.length; i++) {
-               entity = entities[i];
-               var toRemove = [].concat(_entitybboxes[entity.id] || []).concat(_entitybboxes[entity.id + 'I'] || []);
+         function continueLine() {
+           if (context.mode().id !== 'draw-line') return chapter.restart();

 
 

-               for (j = 0; j < toRemove.length; j++) {
-                 _rdrawn.remove(toRemove[j]);
+           var entity = _tulipRoadID && context.hasEntity(_tulipRoadID);

 
 

-                 _rskipped.remove(toRemove[j]);
-               }
+           if (!entity) return chapter.restart();
+           context.map().centerEase(tulipRoadIntersection, 500);
+           var continueLineText = helpHtml('intro.lines.continue_line') + '{br}' + helpHtml('intro.lines.finish_line_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.lines.finish_road');
+           reveal('.surface', continueLineText);
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-line') {
+               return;
+             } else if (mode.id === 'select') {
+               return continueTo(chooseCategoryRoad);
+             } else {
+               return chapter.restart();

              }
              }

-           } // Loop through all the entities to do some preprocessing
-
+           });

 
 

-           for (i = 0; i < entities.length; i++) {
-             entity = entities[i];
-             geometry = entity.geometry(graph); // Insert collision boxes around interesting points/vertices
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-             if (geometry === 'point' || geometry === 'vertex' && isInterestingVertex(entity)) {
-               var hasDirections = entity.directions(graph, projection).length;
-               var markerPadding;
+         function chooseCategoryRoad() {
+           if (context.mode().id !== 'select') return chapter.restart();
+           context.on('exit.intro', function () {
+             return chapter.restart();
+           });
+           var button = context.container().select('.preset-category-road_minor .preset-list-button');
+           if (button.empty()) return chapter.restart(); // disallow scrolling

 
 

-               if (!wireframe && geometry === 'point' && !(zoom >= 18 && hasDirections)) {
-                 renderNodeAs[entity.id] = 'point';
-                 markerPadding = 20; // extra y for marker height
-               } else {
-                 renderNodeAs[entity.id] = 'vertex';
-                 markerPadding = 0;
-               }
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
+             reveal(button.node(), helpHtml('intro.lines.choose_category_road', {
+               category: roadCategory.name()
+             }));
+             button.on('click.intro', function () {
+               continueTo(choosePresetResidential);
+             });
+           }, 400); // after editor pane visible

 
 

-               var coord = projection(entity.loc);
-               var nodePadding = 10;
-               var bbox = {
-                 minX: coord[0] - nodePadding,
-                 minY: coord[1] - nodePadding - markerPadding,
-                 maxX: coord[0] + nodePadding,
-                 maxY: coord[1] + nodePadding
-               };
-               doInsert(bbox, entity.id + 'P');
-             } // From here on, treat vertices like points
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.preset-list-button').on('click.intro', null);
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         }

 
 

+         function choosePresetResidential() {
+           if (context.mode().id !== 'select') return chapter.restart();
+           context.on('exit.intro', function () {
+             return chapter.restart();
+           });
+           var subgrid = context.container().select('.preset-category-road_minor .subgrid');
+           if (subgrid.empty()) return chapter.restart();
+           subgrid.selectAll(':not(.preset-highway-residential) .preset-list-button').on('click.intro', function () {
+             continueTo(retryPresetResidential);
+           });
+           subgrid.selectAll('.preset-highway-residential .preset-list-button').on('click.intro', function () {
+             continueTo(nameRoad);
+           });
+           timeout(function () {
+             reveal(subgrid.node(), helpHtml('intro.lines.choose_preset_residential', {
+               preset: residentialPreset.name()
+             }), {
+               tooltipBox: '.preset-highway-residential .preset-list-button',
+               duration: 300
+             });
+           }, 300);

 
 

-             if (geometry === 'vertex') {
-               geometry = 'point';
-             } // Determine which entities are label-able
+           function continueTo(nextStep) {
+             context.container().select('.preset-list-button').on('click.intro', null);
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         } // selected wrong road type

 
 
 
 

-             var preset = geometry === 'area' && _mainPresetIndex.match(entity, graph);
-             var icon = preset && !shouldSkipIcon(preset) && preset.icon;
-             if (!icon && !utilDisplayName(entity)) continue;
+         function retryPresetResidential() {
+           if (context.mode().id !== 'select') return chapter.restart();
+           context.on('exit.intro', function () {
+             return chapter.restart();
+           }); // disallow scrolling

 
 

-             for (k = 0; k < labelStack.length; k++) {
-               var matchGeom = labelStack[k][0];
-               var matchKey = labelStack[k][1];
-               var matchVal = labelStack[k][2];
-               var hasVal = entity.tags[matchKey];
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             var button = context.container().select('.entity-editor-pane .preset-list-button');
+             reveal(button.node(), helpHtml('intro.lines.retry_preset_residential', {
+               preset: residentialPreset.name()
+             }));
+             button.on('click.intro', function () {
+               continueTo(chooseCategoryRoad);
+             });
+           }, 500);

 
 

-               if (geometry === matchGeom && hasVal && (matchVal === '*' || matchVal === hasVal)) {
-                 labelable[k].push(entity);
-                 break;
-               }
-             }
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.preset-list-button').on('click.intro', null);
+             context.on('exit.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           var positions = {
-             point: [],
-             line: [],
-             area: []
-           };
-           var labelled = {
-             point: [],
-             line: [],
-             area: []
-           }; // Try and find a valid label for labellable entities
-
-           for (k = 0; k < labelable.length; k++) {
-             var fontSize = labelStack[k][3];
-
-             for (i = 0; i < labelable[k].length; i++) {
-               entity = labelable[k][i];
-               geometry = entity.geometry(graph);
-               var getName = geometry === 'line' ? utilDisplayNameForPath : utilDisplayName;
-               var name = getName(entity);
-               var width = name && textWidth(name, fontSize);
-               var p = null;
+         function nameRoad() {
+           context.on('exit.intro', function () {
+             continueTo(didNameRoad);
+           });
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.lines.name_road', {
+               button: icon('#iD-icon-close', 'inline')
+             }), {
+               tooltipClass: 'intro-lines-name_road'
+             });
+           }, 500);

 
 

-               if (geometry === 'point' || geometry === 'vertex') {
-                 // no point or vertex labels in wireframe mode
-                 // no vertex labels at low zooms (vertices have no icons)
-                 if (wireframe) continue;
-                 var renderAs = renderNodeAs[entity.id];
-                 if (renderAs === 'vertex' && zoom < 17) continue;
-                 p = getPointLabel(entity, width, fontSize, renderAs);
-               } else if (geometry === 'line') {
-                 p = getLineLabel(entity, width, fontSize);
-               } else if (geometry === 'area') {
-                 p = getAreaLabel(entity, width, fontSize);
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         }
+
+         function didNameRoad() {
+           context.history().checkpoint('doneAddLine');
+           timeout(function () {
+             reveal('.surface', helpHtml('intro.lines.did_name_road'), {
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: function buttonCallback() {
+                 continueTo(updateLine);

                }
                }

+             });
+           }, 500);

 
 

-               if (p) {
-                 if (geometry === 'vertex') {
-                   geometry = 'point';
-                 } // treat vertex like point
+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }

 
 

+         function updateLine() {
+           context.history().reset('doneAddLine');

 
 

-                 p.classes = geometry + ' tag-' + labelStack[k][1];
-                 positions[geometry].push(p);
-                 labelled[geometry].push(entity);
-               }
-             }
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return chapter.restart();

            }
 
            }
 

-           function isInterestingVertex(entity) {
-             var selectedIDs = context.selectedIDs();
-             return entity.hasInterestingTags() || entity.isEndpoint(graph) || entity.isConnected(graph) || selectedIDs.indexOf(entity.id) !== -1 || graph.parentWays(entity).some(function (parent) {
-               return selectedIDs.indexOf(parent.id) !== -1;
+           var msec = transitionTime(woodRoadDragMidpoint, context.map().center());
+
+           if (msec) {
+             reveal(null, null, {
+               duration: 0

              });
            }
 
              });
            }
 

-           function getPointLabel(entity, width, height, geometry) {
-             var y = geometry === 'point' ? -12 : 0;
-             var pointOffsets = {
-               ltr: [15, y, 'start'],
-               rtl: [-15, y, 'end']
+           context.map().centerZoomEase(woodRoadDragMidpoint, 19, msec);
+           timeout(function () {
+             var padding = 250 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadDragMidpoint, padding, context);
+
+             var advance = function advance() {
+               continueTo(addNode);

              };
              };

-             var textDirection = _mainLocalizer.textDirection();
-             var coord = projection(entity.loc);
-             var textPadding = 2;
-             var offset = pointOffsets[textDirection];
-             var p = {
-               height: height,
-               width: width,
-               x: coord[0] + offset[0],
-               y: coord[1] + offset[1],
-               textAnchor: offset[2]
-             }; // insert a collision box for the text label..

 
 

-             var bbox;
+             reveal(box, helpHtml('intro.lines.update_line'), {
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: advance
+             });
+             context.map().on('move.intro drawn.intro', function () {
+               var padding = 250 * Math.pow(2, context.map().zoom() - 19);
+               var box = pad(woodRoadDragMidpoint, padding, context);
+               reveal(box, helpHtml('intro.lines.update_line'), {
+                 duration: 0,
+                 buttonText: _t.html('intro.ok'),
+                 buttonCallback: advance
+               });
+             });
+           }, msec + 100);

 
 

-             if (textDirection === 'rtl') {
-               bbox = {
-                 minX: p.x - width - textPadding,
-                 minY: p.y - height / 2 - textPadding,
-                 maxX: p.x + textPadding,
-                 maxY: p.y + height / 2 + textPadding
-               };
-             } else {
-               bbox = {
-                 minX: p.x - textPadding,
-                 minY: p.y - height / 2 - textPadding,
-                 maxX: p.x + width + textPadding,
-                 maxY: p.y + height / 2 + textPadding
-               };
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }
+
+         function addNode() {
+           context.history().reset('doneAddLine');
+
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return chapter.restart();
+           }
+
+           var padding = 40 * Math.pow(2, context.map().zoom() - 19);
+           var box = pad(woodRoadAddNode, padding, context);
+           var addNodeString = helpHtml('intro.lines.add_node' + (context.lastPointerType() === 'mouse' ? '' : '_touch'));
+           reveal(box, addNodeString);
+           context.map().on('move.intro drawn.intro', function () {
+             var padding = 40 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadAddNode, padding, context);
+             reveal(box, addNodeString, {
+               duration: 0
+             });
+           });
+           context.history().on('change.intro', function (changed) {
+             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+               return continueTo(updateLine);

              }
 
              }
 

-             if (tryInsert([bbox], entity.id, true)) {
-               return p;
+             if (changed.created().length === 1) {
+               timeout(function () {
+                 continueTo(startDragEndpoint);
+               }, 500);
+             }
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'select') {
+               continueTo(updateLine);

              }
              }

+           });
+
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           function getLineLabel(entity, width, height) {
-             var viewport = geoExtent(context.projection.clipExtent()).polygon();
-             var points = graph.childNodes(entity).map(function (node) {
-               return projection(node.loc);
-             });
-             var length = geoPathLength(points);
-             if (length < width + 20) return; // % along the line to attempt to place the label
+         function startDragEndpoint() {
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return continueTo(updateLine);
+           }

 
 

-             var lineOffsets = [50, 45, 55, 40, 60, 35, 65, 30, 70, 25, 75, 20, 80, 15, 95, 10, 90, 5, 95];
-             var padding = 3;
+           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+           var box = pad(woodRoadDragEndpoint, padding, context);
+           var startDragString = helpHtml('intro.lines.start_drag_endpoint' + (context.lastPointerType() === 'mouse' ? '' : '_touch')) + helpHtml('intro.lines.drag_to_intersection');
+           reveal(box, startDragString);
+           context.map().on('move.intro drawn.intro', function () {
+             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+               return continueTo(updateLine);
+             }

 
 

-             for (var i = 0; i < lineOffsets.length; i++) {
-               var offset = lineOffsets[i];
-               var middle = offset / 100 * length;
-               var start = middle - width / 2;
-               if (start < 0 || start + width > length) continue; // generate subpath and ignore paths that are invalid or don't cross viewport.
+             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadDragEndpoint, padding, context);
+             reveal(box, startDragString, {
+               duration: 0
+             });
+             var entity = context.entity(woodRoadEndID);

 
 

-               var sub = subpath(points, start, start + width);
+             if (geoSphericalDistance(entity.loc, woodRoadDragEndpoint) <= 4) {
+               continueTo(finishDragEndpoint);
+             }
+           });

 
 

-               if (!sub || !geoPolygonIntersectsPolygon(viewport, sub, true)) {
-                 continue;
-               }
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-               var isReverse = reverse(sub);
+         function finishDragEndpoint() {
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return continueTo(updateLine);
+           }

 
 

-               if (isReverse) {
-                 sub = sub.reverse();
-               }
+           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+           var box = pad(woodRoadDragEndpoint, padding, context);
+           var finishDragString = helpHtml('intro.lines.spot_looks_good') + helpHtml('intro.lines.finish_drag_endpoint' + (context.lastPointerType() === 'mouse' ? '' : '_touch'));
+           reveal(box, finishDragString);
+           context.map().on('move.intro drawn.intro', function () {
+             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+               return continueTo(updateLine);
+             }

 
 

-               var bboxes = [];
-               var boxsize = (height + 2) / 2;
+             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadDragEndpoint, padding, context);
+             reveal(box, finishDragString, {
+               duration: 0
+             });
+             var entity = context.entity(woodRoadEndID);

 
 

-               for (var j = 0; j < sub.length - 1; j++) {
-                 var a = sub[j];
-                 var b = sub[j + 1]; // split up the text into small collision boxes
+             if (geoSphericalDistance(entity.loc, woodRoadDragEndpoint) > 4) {
+               continueTo(startDragEndpoint);
+             }
+           });
+           context.on('enter.intro', function () {
+             continueTo(startDragMidpoint);
+           });

 
 

-                 var num = Math.max(1, Math.floor(geoVecLength(a, b) / boxsize / 2));
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-                 for (var box = 0; box < num; box++) {
-                   var p = geoVecInterp(a, b, box / num);
-                   var x0 = p[0] - boxsize - padding;
-                   var y0 = p[1] - boxsize - padding;
-                   var x1 = p[0] + boxsize + padding;
-                   var y1 = p[1] + boxsize + padding;
-                   bboxes.push({
-                     minX: Math.min(x0, x1),
-                     minY: Math.min(y0, y1),
-                     maxX: Math.max(x0, x1),
-                     maxY: Math.max(y0, y1)
-                   });
-                 }
-               }
+         function startDragMidpoint() {
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return continueTo(updateLine);
+           }

 
 

-               if (tryInsert(bboxes, entity.id, false)) {
-                 // accept this one
-                 return {
-                   'font-size': height + 2,
-                   lineString: lineString(sub),
-                   startOffset: offset + '%'
-                 };
-               }
+           if (context.selectedIDs().indexOf(woodRoadID) === -1) {
+             context.enter(modeSelect(context, [woodRoadID]));
+           }
+
+           var padding = 80 * Math.pow(2, context.map().zoom() - 19);
+           var box = pad(woodRoadDragMidpoint, padding, context);
+           reveal(box, helpHtml('intro.lines.start_drag_midpoint'));
+           context.map().on('move.intro drawn.intro', function () {
+             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+               return continueTo(updateLine);

              }
 
              }
 

-             function reverse(p) {
-               var angle = Math.atan2(p[1][1] - p[0][1], p[1][0] - p[0][0]);
-               return !(p[0][0] < p[p.length - 1][0] && angle < Math.PI / 2 && angle > -Math.PI / 2);
+             var padding = 80 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadDragMidpoint, padding, context);
+             reveal(box, helpHtml('intro.lines.start_drag_midpoint'), {
+               duration: 0
+             });
+           });
+           context.history().on('change.intro', function (changed) {
+             if (changed.created().length === 1) {
+               continueTo(continueDragMidpoint);
+             }
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'select') {
+               // keep Wood Road selected so midpoint triangles are drawn..
+               context.enter(modeSelect(context, [woodRoadID]));

              }
              }

+           });

 
 

-             function lineString(points) {
-               return 'M' + points.join('L');
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }
+
+         function continueDragMidpoint() {
+           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+             return continueTo(updateLine);
+           }
+
+           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+           var box = pad(woodRoadDragEndpoint, padding, context);
+           box.height += 400;
+
+           var advance = function advance() {
+             context.history().checkpoint('doneUpdateLine');
+             continueTo(deleteLines);
+           };
+
+           reveal(box, helpHtml('intro.lines.continue_drag_midpoint'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: advance
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
+               return continueTo(updateLine);

              }
 
              }
 

-             function subpath(points, from, to) {
-               var sofar = 0;
-               var start, end, i0, i1;
+             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
+             var box = pad(woodRoadDragEndpoint, padding, context);
+             box.height += 400;
+             reveal(box, helpHtml('intro.lines.continue_drag_midpoint'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: advance
+             });
+           });

 
 

-               for (var i = 0; i < points.length - 1; i++) {
-                 var a = points[i];
-                 var b = points[i + 1];
-                 var current = geoVecLength(a, b);
-                 var portion;
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-                 if (!start && sofar + current >= from) {
-                   portion = (from - sofar) / current;
-                   start = [a[0] + portion * (b[0] - a[0]), a[1] + portion * (b[1] - a[1])];
-                   i0 = i + 1;
-                 }
+         function deleteLines() {
+           context.history().reset('doneUpdateLine');
+           context.enter(modeBrowse(context));

 
 

-                 if (!end && sofar + current >= to) {
-                   portion = (to - sofar) / current;
-                   end = [a[0] + portion * (b[0] - a[0]), a[1] + portion * (b[1] - a[1])];
-                   i1 = i + 1;
-                 }
+           if (!context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return chapter.restart();
+           }

 
 

-                 sofar += current;
-               }
+           var msec = transitionTime(deleteLinesLoc, context.map().center());

 
 

-               var result = points.slice(i0, i1);
-               result.unshift(start);
-               result.push(end);
-               return result;
-             }
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });

            }
 
            }
 

-           function getAreaLabel(entity, width, height) {
-             var centroid = path.centroid(entity.asGeoJSON(graph, true));
-             var extent = entity.extent(graph);
-             var areaWidth = projection(extent[1])[0] - projection(extent[0])[0];
-             if (isNaN(centroid[0]) || areaWidth < 20) return;
-             var preset = _mainPresetIndex.match(entity, context.graph());
-             var picon = preset && preset.icon;
-             var iconSize = 17;
-             var padding = 2;
-             var p = {};
+           context.map().centerZoomEase(deleteLinesLoc, 18, msec);
+           timeout(function () {
+             var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+             var box = pad(deleteLinesLoc, padding, context);
+             box.top -= 200;
+             box.height += 400;

 
 

-             if (picon) {
-               // icon and label..
-               if (addIcon()) {
-                 addLabel(iconSize + padding);
-                 return p;
-               }
-             } else {
-               // label only..
-               if (addLabel(0)) {
-                 return p;
-               }
-             }
+             var advance = function advance() {
+               continueTo(rightClickIntersection);
+             };

 
 

-             function addIcon() {
-               var iconX = centroid[0] - iconSize / 2;
-               var iconY = centroid[1] - iconSize / 2;
-               var bbox = {
-                 minX: iconX,
-                 minY: iconY,
-                 maxX: iconX + iconSize,
-                 maxY: iconY + iconSize
-               };
+             reveal(box, helpHtml('intro.lines.delete_lines', {
+               street: _t('intro.graph.name.12th-avenue')
+             }), {
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: advance
+             });
+             context.map().on('move.intro drawn.intro', function () {
+               var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+               var box = pad(deleteLinesLoc, padding, context);
+               box.top -= 200;
+               box.height += 400;
+               reveal(box, helpHtml('intro.lines.delete_lines', {
+                 street: _t('intro.graph.name.12th-avenue')
+               }), {
+                 duration: 0,
+                 buttonText: _t.html('intro.ok'),
+                 buttonCallback: advance
+               });
+             });
+             context.history().on('change.intro', function () {
+               timeout(function () {
+                 continueTo(deleteLines);
+               }, 500); // after any transition (e.g. if user deleted intersection)
+             });
+           }, msec + 100);

 
 

-               if (tryInsert([bbox], entity.id + 'I', true)) {
-                 p.transform = 'translate(' + iconX + ',' + iconY + ')';
-                 return true;
-               }
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-               return false;
-             }
+         function rightClickIntersection() {
+           context.history().reset('doneUpdateLine');
+           context.enter(modeBrowse(context));
+           context.map().centerZoomEase(eleventhAvenueEnd, 18, 500);
+           var rightClickString = helpHtml('intro.lines.split_street', {
+             street1: _t('intro.graph.name.11th-avenue'),
+             street2: _t('intro.graph.name.washington-street')
+           }) + helpHtml('intro.lines.' + (context.lastPointerType() === 'mouse' ? 'rightclick_intersection' : 'edit_menu_intersection_touch'));
+           timeout(function () {
+             var padding = 60 * Math.pow(2, context.map().zoom() - 18);
+             var box = pad(eleventhAvenueEnd, padding, context);
+             reveal(box, rightClickString);
+             context.map().on('move.intro drawn.intro', function () {
+               var padding = 60 * Math.pow(2, context.map().zoom() - 18);
+               var box = pad(eleventhAvenueEnd, padding, context);
+               reveal(box, rightClickString, {
+                 duration: 0
+               });
+             });
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'select') return;
+               var ids = context.selectedIDs();
+               if (ids.length !== 1 || ids[0] !== eleventhAvenueEndID) return;
+               timeout(function () {
+                 var node = selectMenuItem(context, 'split').node();
+                 if (!node) return;
+                 continueTo(splitIntersection);
+               }, 50); // after menu visible
+             });
+             context.history().on('change.intro', function () {
+               timeout(function () {
+                 continueTo(deleteLines);
+               }, 300); // after any transition (e.g. if user deleted intersection)
+             });
+           }, 600);

 
 

-             function addLabel(yOffset) {
-               if (width && areaWidth >= width + 20) {
-                 var labelX = centroid[0];
-                 var labelY = centroid[1] + yOffset;
-                 var bbox = {
-                   minX: labelX - width / 2 - padding,
-                   minY: labelY - height / 2 - padding,
-                   maxX: labelX + width / 2 + padding,
-                   maxY: labelY + height / 2 + padding
-                 };
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-                 if (tryInsert([bbox], entity.id, true)) {
-                   p.x = labelX;
-                   p.y = labelY;
-                   p.textAnchor = 'middle';
-                   p.height = height;
-                   return true;
-                 }
-               }
+         function splitIntersection() {
+           if (!context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return continueTo(deleteLines);
+           }
+
+           var node = selectMenuItem(context, 'split').node();
+
+           if (!node) {
+             return continueTo(rightClickIntersection);
+           }
+
+           var wasChanged = false;
+           _washingtonSegmentID = null;
+           reveal('.edit-menu', helpHtml('intro.lines.split_intersection', {
+             street: _t('intro.graph.name.washington-street')
+           }), {
+             padding: 50
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             var node = selectMenuItem(context, 'split').node();

 
 

-               return false;
+             if (!wasChanged && !node) {
+               return continueTo(rightClickIntersection);

              }
              }

-           } // force insert a singular bounding box
-           // singular box only, no array, id better be unique

 
 

+             reveal('.edit-menu', helpHtml('intro.lines.split_intersection', {
+               street: _t('intro.graph.name.washington-street')
+             }), {
+               duration: 0,
+               padding: 50
+             });
+           });
+           context.history().on('change.intro', function (changed) {
+             wasChanged = true;
+             timeout(function () {
+               if (context.history().undoAnnotation() === _t('operations.split.annotation.line', {
+                 n: 1
+               })) {
+                 _washingtonSegmentID = changed.created()[0].id;
+                 continueTo(didSplit);
+               } else {
+                 _washingtonSegmentID = null;
+                 continueTo(retrySplit);
+               }
+             }, 300); // after any transition (e.g. if user deleted intersection)
+           });

 
 

-           function doInsert(bbox, id) {
-             bbox.id = id;
-             var oldbox = _entitybboxes[id];
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-             if (oldbox) {
-               _rdrawn.remove(oldbox);
-             }
+         function retrySplit() {
+           context.enter(modeBrowse(context));
+           context.map().centerZoomEase(eleventhAvenueEnd, 18, 500);

 
 

-             _entitybboxes[id] = bbox;
+           var advance = function advance() {
+             continueTo(rightClickIntersection);
+           };

 
 

-             _rdrawn.insert(bbox);
+           var padding = 60 * Math.pow(2, context.map().zoom() - 18);
+           var box = pad(eleventhAvenueEnd, padding, context);
+           reveal(box, helpHtml('intro.lines.retry_split'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: advance
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             var padding = 60 * Math.pow(2, context.map().zoom() - 18);
+             var box = pad(eleventhAvenueEnd, padding, context);
+             reveal(box, helpHtml('intro.lines.retry_split'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: advance
+             });
+           });
+
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           function tryInsert(bboxes, id, saveSkipped) {
-             var skipped = false;
+         function didSplit() {
+           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return continueTo(rightClickIntersection);
+           }

 
 

-             for (var i = 0; i < bboxes.length; i++) {
-               var bbox = bboxes[i];
-               bbox.id = id; // Check that label is visible
+           var ids = context.selectedIDs();
+           var string = 'intro.lines.did_split_' + (ids.length > 1 ? 'multi' : 'single');
+           var street = _t('intro.graph.name.washington-street');
+           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+           var box = pad(twelfthAvenue, padding, context);
+           box.width = box.width / 2;
+           reveal(box, helpHtml(string, {
+             street1: street,
+             street2: street
+           }), {
+             duration: 500
+           });
+           timeout(function () {
+             context.map().centerZoomEase(twelfthAvenue, 18, 500);
+             context.map().on('move.intro drawn.intro', function () {
+               var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+               var box = pad(twelfthAvenue, padding, context);
+               box.width = box.width / 2;
+               reveal(box, helpHtml(string, {
+                 street1: street,
+                 street2: street
+               }), {
+                 duration: 0
+               });
+             });
+           }, 600); // after initial reveal and curtain cut

 
 

-               if (bbox.minX < 0 || bbox.minY < 0 || bbox.maxX > dimensions[0] || bbox.maxY > dimensions[1]) {
-                 skipped = true;
-                 break;
-               }
+           context.on('enter.intro', function () {
+             var ids = context.selectedIDs();

 
 

-               if (_rdrawn.collides(bbox)) {
-                 skipped = true;
-                 break;
-               }
+             if (ids.length === 1 && ids[0] === _washingtonSegmentID) {
+               continueTo(multiSelect);

              }
              }

-
-             _entitybboxes[id] = bboxes;
-
-             if (skipped) {
-               if (saveSkipped) {
-                 _rskipped.load(bboxes);
-               }
-             } else {
-               _rdrawn.load(bboxes);
+           });
+           context.history().on('change.intro', function () {
+             if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+               return continueTo(rightClickIntersection);

              }
              }

+           });

 
 

-             return !skipped;
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           var layer = selection.selectAll('.layer-osm.labels');
-           layer.selectAll('.labels-group').data(['halo', 'label', 'debug']).enter().append('g').attr('class', function (d) {
-             return 'labels-group ' + d;
-           });
-           var halo = layer.selectAll('.labels-group.halo');
-           var label = layer.selectAll('.labels-group.label');
-           var debug = layer.selectAll('.labels-group.debug'); // points
-
-           drawPointLabels(label, labelled.point, filter, 'pointlabel', positions.point);
-           drawPointLabels(halo, labelled.point, filter, 'pointlabel-halo', positions.point); // lines
+         function multiSelect() {
+           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return continueTo(rightClickIntersection);
+           }

 
 

-           drawLinePaths(layer, labelled.line, filter, '', positions.line);
-           drawLineLabels(label, labelled.line, filter, 'linelabel', positions.line);
-           drawLineLabels(halo, labelled.line, filter, 'linelabel-halo', positions.line); // areas
+           var ids = context.selectedIDs();
+           var hasWashington = ids.indexOf(_washingtonSegmentID) !== -1;
+           var hasTwelfth = ids.indexOf(twelfthAvenueID) !== -1;

 
 

-           drawAreaLabels(label, labelled.area, filter, 'arealabel', positions.area);
-           drawAreaLabels(halo, labelled.area, filter, 'arealabel-halo', positions.area);
-           drawAreaIcons(label, labelled.area, filter, 'areaicon', positions.area);
-           drawAreaIcons(halo, labelled.area, filter, 'areaicon-halo', positions.area); // debug
+           if (hasWashington && hasTwelfth) {
+             return continueTo(multiRightClick);
+           } else if (!hasWashington && !hasTwelfth) {
+             return continueTo(didSplit);
+           }

 
 

-           drawCollisionBoxes(debug, _rskipped, 'debug-skipped');
-           drawCollisionBoxes(debug, _rdrawn, 'debug-drawn');
-           layer.call(filterLabels);
-         }
+           context.map().centerZoomEase(twelfthAvenue, 18, 500);
+           timeout(function () {
+             var selected, other, padding, box;

 
 

-         function filterLabels(selection) {
-           var drawLayer = selection.selectAll('.layer-osm.labels');
-           var layers = drawLayer.selectAll('.labels-group.halo, .labels-group.label');
-           layers.selectAll('.nolabel').classed('nolabel', false);
-           var mouse = context.map().mouse();
-           var graph = context.graph();
-           var selectedIDs = context.selectedIDs();
-           var ids = [];
-           var pad, bbox; // hide labels near the mouse
+             if (hasWashington) {
+               selected = _t('intro.graph.name.washington-street');
+               other = _t('intro.graph.name.12th-avenue');
+               padding = 60 * Math.pow(2, context.map().zoom() - 18);
+               box = pad(twelfthAvenueEnd, padding, context);
+               box.width *= 3;
+             } else {
+               selected = _t('intro.graph.name.12th-avenue');
+               other = _t('intro.graph.name.washington-street');
+               padding = 200 * Math.pow(2, context.map().zoom() - 18);
+               box = pad(twelfthAvenue, padding, context);
+               box.width /= 2;
+             }

 
 

-           if (mouse) {
-             pad = 20;
-             bbox = {
-               minX: mouse[0] - pad,
-               minY: mouse[1] - pad,
-               maxX: mouse[0] + pad,
-               maxY: mouse[1] + pad
-             };
+             reveal(box, helpHtml('intro.lines.multi_select', {
+               selected: selected,
+               other1: other
+             }) + ' ' + helpHtml('intro.lines.add_to_selection_' + (context.lastPointerType() === 'mouse' ? 'click' : 'touch'), {
+               selected: selected,
+               other2: other
+             }));
+             context.map().on('move.intro drawn.intro', function () {
+               if (hasWashington) {
+                 selected = _t('intro.graph.name.washington-street');
+                 other = _t('intro.graph.name.12th-avenue');
+                 padding = 60 * Math.pow(2, context.map().zoom() - 18);
+                 box = pad(twelfthAvenueEnd, padding, context);
+                 box.width *= 3;
+               } else {
+                 selected = _t('intro.graph.name.12th-avenue');
+                 other = _t('intro.graph.name.washington-street');
+                 padding = 200 * Math.pow(2, context.map().zoom() - 18);
+                 box = pad(twelfthAvenue, padding, context);
+                 box.width /= 2;
+               }

 
 

-             var nearMouse = _rdrawn.search(bbox).map(function (entity) {
-               return entity.id;
+               reveal(box, helpHtml('intro.lines.multi_select', {
+                 selected: selected,
+                 other1: other
+               }) + ' ' + helpHtml('intro.lines.add_to_selection_' + (context.lastPointerType() === 'mouse' ? 'click' : 'touch'), {
+                 selected: selected,
+                 other2: other
+               }), {
+                 duration: 0
+               });
+             });
+             context.on('enter.intro', function () {
+               continueTo(multiSelect);

              });
              });

+             context.history().on('change.intro', function () {
+               if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+                 return continueTo(rightClickIntersection);
+               }
+             });
+           }, 600);

 
 

-             ids.push.apply(ids, nearMouse);
-           } // hide labels on selected nodes (they look weird when dragging / haloed)
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

+         function multiRightClick() {
+           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return continueTo(rightClickIntersection);
+           }

 
 

-           for (var i = 0; i < selectedIDs.length; i++) {
-             var entity = graph.hasEntity(selectedIDs[i]);
+           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+           var box = pad(twelfthAvenue, padding, context);
+           var rightClickString = helpHtml('intro.lines.multi_select_success') + helpHtml('intro.lines.multi_' + (context.lastPointerType() === 'mouse' ? 'rightclick' : 'edit_menu_touch'));
+           reveal(box, rightClickString);
+           context.map().on('move.intro drawn.intro', function () {
+             var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+             var box = pad(twelfthAvenue, padding, context);
+             reveal(box, rightClickString, {
+               duration: 0
+             });
+           });
+           context.ui().editMenu().on('toggled.intro', function (open) {
+             if (!open) return;
+             timeout(function () {
+               var ids = context.selectedIDs();

 
 

-             if (entity && entity.type === 'node') {
-               ids.push(selectedIDs[i]);
+               if (ids.length === 2 && ids.indexOf(twelfthAvenueID) !== -1 && ids.indexOf(_washingtonSegmentID) !== -1) {
+                 var node = selectMenuItem(context, 'delete').node();
+                 if (!node) return;
+                 continueTo(multiDelete);
+               } else if (ids.length === 1 && ids.indexOf(_washingtonSegmentID) !== -1) {
+                 return continueTo(multiSelect);
+               } else {
+                 return continueTo(didSplit);
+               }
+             }, 300); // after edit menu visible
+           });
+           context.history().on('change.intro', function () {
+             if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+               return continueTo(rightClickIntersection);

              }
              }

+           });
+
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.ui().editMenu().on('toggled.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           layers.selectAll(utilEntitySelector(ids)).classed('nolabel', true); // draw the mouse bbox if debugging is on..
+         function multiDelete() {
+           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
+             return continueTo(rightClickIntersection);
+           }

 
 

-           var debug = selection.selectAll('.labels-group.debug');
-           var gj = [];
+           var node = selectMenuItem(context, 'delete').node();
+           if (!node) return continueTo(multiRightClick);
+           reveal('.edit-menu', helpHtml('intro.lines.multi_delete'), {
+             padding: 50
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             reveal('.edit-menu', helpHtml('intro.lines.multi_delete'), {
+               duration: 0,
+               padding: 50
+             });
+           });
+           context.on('exit.intro', function () {
+             if (context.hasEntity(_washingtonSegmentID) || context.hasEntity(twelfthAvenueID)) {
+               return continueTo(multiSelect); // left select mode but roads still exist
+             }
+           });
+           context.history().on('change.intro', function () {
+             if (context.hasEntity(_washingtonSegmentID) || context.hasEntity(twelfthAvenueID)) {
+               continueTo(retryDelete); // changed something but roads still exist
+             } else {
+               continueTo(play);
+             }
+           });

 
 

-           if (context.getDebug('collision')) {
-             gj = bbox ? [{
-               type: 'Polygon',
-               coordinates: [[[bbox.minX, bbox.minY], [bbox.maxX, bbox.minY], [bbox.maxX, bbox.maxY], [bbox.minX, bbox.maxY], [bbox.minX, bbox.minY]]]
-             }] : [];
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('exit.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           var box = debug.selectAll('.debug-mouse').data(gj); // exit
-
-           box.exit().remove(); // enter/update
+         function retryDelete() {
+           context.enter(modeBrowse(context));
+           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
+           var box = pad(twelfthAvenue, padding, context);
+           reveal(box, helpHtml('intro.lines.retry_delete'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(multiSelect);
+             }
+           });

 
 

-           box.enter().append('path').attr('class', 'debug debug-mouse yellow').merge(box).attr('d', d3_geoPath());
+           function continueTo(nextStep) {
+             nextStep();
+           }

          }
 
          }
 

-         var throttleFilterLabels = throttle(filterLabels, 100);
+         function play() {
+           dispatch.call('done');
+           reveal('.ideditor', helpHtml('intro.lines.play', {
+             next: _t('intro.buildings.title')
+           }), {
+             tooltipBox: '.intro-nav-wrap .chapter-building',
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               reveal('.ideditor');
+             }
+           });
+         }

 
 

-         drawLabels.observe = function (selection) {
-           var listener = function listener() {
-             throttleFilterLabels(selection);
-           };
+         chapter.enter = function () {
+           addLine();
+         };

 
 

-           selection.on('mousemove.hidelabels', listener);
-           context.on('enter.hidelabels', listener);
+         chapter.exit = function () {
+           timeouts.forEach(window.clearTimeout);
+           select(window).on('pointerdown.intro mousedown.intro', null, true);
+           context.on('enter.intro exit.intro', null);
+           context.map().on('move.intro drawn.intro', null);
+           context.history().on('change.intro', null);
+           context.container().select('.inspector-wrap').on('wheel.intro', null);
+           context.container().select('.preset-list-button').on('click.intro', null);

          };
 
          };
 

-         drawLabels.off = function (selection) {
-           throttleFilterLabels.cancel();
-           selection.on('mousemove.hidelabels', null);
-           context.on('enter.hidelabels', null);
+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();

          };
 
          };
 

-         return drawLabels;
+         return utilRebind(chapter, dispatch, 'on');

        }
 
        }
 

-       var _layerEnabled$1 = false;
-
-       var _qaService$1;
-
-       function svgImproveOSM(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           return dispatch.call('change');
-         }, 1000);
-
-         var minZoom = 12;
-         var touchLayer = select(null);
-         var drawLayer = select(null);
-         var layerVisible = false;
-
-         function markerPath(selection, klass) {
-           selection.attr('class', klass).attr('transform', 'translate(-10, -28)').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
-         } // Loosely-coupled improveOSM service for fetching issues
+       function uiIntroBuilding(context, reveal) {
+         var dispatch = dispatch$8('done');
+         var house = [-85.62815, 41.95638];
+         var tank = [-85.62732, 41.95347];
+         var buildingCatetory = _mainPresetIndex.item('category-building');
+         var housePreset = _mainPresetIndex.item('building/house');
+         var tankPreset = _mainPresetIndex.item('man_made/storage_tank');
+         var timeouts = [];
+         var _houseID = null;
+         var _tankID = null;
+         var chapter = {
+           title: 'intro.buildings.title'
+         };

 
 

+         function timeout(f, t) {
+           timeouts.push(window.setTimeout(f, t));
+         }

 
 

-         function getService() {
-           if (services.improveOSM && !_qaService$1) {
-             _qaService$1 = services.improveOSM;
+         function eventCancel(d3_event) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+         }

 
 

-             _qaService$1.on('loaded', throttledRedraw);
-           } else if (!services.improveOSM && _qaService$1) {
-             _qaService$1 = null;
-           }
+         function revealHouse(center, text, options) {
+           var padding = 160 * Math.pow(2, context.map().zoom() - 20);
+           var box = pad(center, padding, context);
+           reveal(box, text, options);
+         }

 
 

-           return _qaService$1;
-         } // Show the markers
+         function revealTank(center, text, options) {
+           var padding = 190 * Math.pow(2, context.map().zoom() - 19.5);
+           var box = pad(center, padding, context);
+           reveal(box, text, options);
+         }

 
 

+         function addHouse() {
+           context.enter(modeBrowse(context));
+           context.history().reset('initial');
+           _houseID = null;
+           var msec = transitionTime(house, context.map().center());

 
 

-         function editOn() {
-           if (!layerVisible) {
-             layerVisible = true;
-             drawLayer.style('display', 'block');
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });

            }
            }

-         } // Immediately remove the markers and their touch targets

 
 

+           context.map().centerZoomEase(house, 19, msec);
+           timeout(function () {
+             var tooltip = reveal('button.add-area', helpHtml('intro.buildings.add_building'));
+             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-buildings');
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'add-area') return;
+               continueTo(startHouse);
+             });
+           }, msec + 100);

 
 

-         function editOff() {
-           if (layerVisible) {
-             layerVisible = false;
-             drawLayer.style('display', 'none');
-             drawLayer.selectAll('.qaItem.improveOSM').remove();
-             touchLayer.selectAll('.qaItem.improveOSM').remove();
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

-         } // Enable the layer.  This shows the markers and transitions them to visible.
-
-
-         function layerOn() {
-           editOn();
-           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
-             return dispatch.call('change');
-           });
-         } // Disable the layer.  This transitions the layer invisible and then hides the markers.
-
-
-         function layerOff() {
-           throttledRedraw.cancel();
-           drawLayer.interrupt();
-           touchLayer.selectAll('.qaItem.improveOSM').remove();
-           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
-             editOff();
-             dispatch.call('change');
-           });
-         } // Update the issue markers
-
+         }

 
 

-         function updateMarkers() {
-           if (!layerVisible || !_layerEnabled$1) return;
-           var service = getService();
-           var selectedID = context.selectedErrorID();
-           var data = service ? service.getItems(projection) : [];
-           var getTransform = svgPointTransform(projection); // Draw markers..
+         function startHouse() {
+           if (context.mode().id !== 'add-area') {
+             return continueTo(addHouse);
+           }

 
 

-           var markers = drawLayer.selectAll('.qaItem.improveOSM').data(data, function (d) {
-             return d.id;
-           }); // exit
+           _houseID = null;
+           context.map().zoomEase(20, 500);
+           timeout(function () {
+             var startString = helpHtml('intro.buildings.start_building') + helpHtml('intro.buildings.building_corner_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap'));
+             revealHouse(house, startString);
+             context.map().on('move.intro drawn.intro', function () {
+               revealHouse(house, startString, {
+                 duration: 0
+               });
+             });
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'draw-area') return chapter.restart();
+               continueTo(continueHouse);
+             });
+           }, 550); // after easing

 
 

-           markers.exit().remove(); // enter
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-           var markersEnter = markers.enter().append('g').attr('class', function (d) {
-             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
+         function continueHouse() {
+           if (context.mode().id !== 'draw-area') {
+             return continueTo(addHouse);
+           }
+
+           _houseID = null;
+           var continueString = helpHtml('intro.buildings.continue_building') + '{br}' + helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.buildings.finish_building');
+           revealHouse(house, continueString);
+           context.map().on('move.intro drawn.intro', function () {
+             revealHouse(house, continueString, {
+               duration: 0
+             });

            });
            });

-           markersEnter.append('polygon').call(markerPath, 'shadow');
-           markersEnter.append('ellipse').attr('cx', 0).attr('cy', 0).attr('rx', 4.5).attr('ry', 2).attr('class', 'stroke');
-           markersEnter.append('polygon').attr('fill', 'currentColor').call(markerPath, 'qaItem-fill');
-           markersEnter.append('use').attr('transform', 'translate(-6.5, -23)').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('xlink:href', function (d) {
-             var picon = d.icon;
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-area') {
+               return;
+             } else if (mode.id === 'select') {
+               var graph = context.graph();
+               var way = context.entity(context.selectedIDs()[0]);
+               var nodes = graph.childNodes(way);
+               var points = utilArrayUniq(nodes).map(function (n) {
+                 return context.projection(n.loc);
+               });

 
 

-             if (!picon) {
-               return '';
+               if (isMostlySquare(points)) {
+                 _houseID = way.id;
+                 return continueTo(chooseCategoryBuilding);
+               } else {
+                 return continueTo(retryHouse);
+               }

              } else {
              } else {

-               var isMaki = /^maki-/.test(picon);
-               return "#".concat(picon).concat(isMaki ? '-11' : '');
+               return chapter.restart();

              }
              }

-           }); // update
+           });

 
 

-           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
-             return d.id === selectedID;
-           }).attr('transform', getTransform); // Draw targets..
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-           if (touchLayer.empty()) return;
-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var targets = touchLayer.selectAll('.qaItem.improveOSM').data(data, function (d) {
-             return d.id;
-           }); // exit
+         function retryHouse() {
+           var onClick = function onClick() {
+             continueTo(addHouse);
+           };

 
 

-           targets.exit().remove(); // enter/update
+           revealHouse(house, helpHtml('intro.buildings.retry_building'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: onClick
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             revealHouse(house, helpHtml('intro.buildings.retry_building'), {
+               duration: 0,
+               buttonText: _t.html('intro.ok'),
+               buttonCallback: onClick
+             });
+           });

 
 

-           targets.enter().append('rect').attr('width', '20px').attr('height', '30px').attr('x', '-10px').attr('y', '-28px').merge(targets).sort(sortY).attr('class', function (d) {
-             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
-           }).attr('transform', getTransform);
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             nextStep();
+           }
+         }

 
 

-           function sortY(a, b) {
-             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : b.loc[1] - a.loc[1];
+         function chooseCategoryBuilding() {
+           if (!_houseID || !context.hasEntity(_houseID)) {
+             return addHouse();

            }
            }

-         } // Draw the ImproveOSM layer and schedule loading issues and updating markers.

 
 

+           var ids = context.selectedIDs();

 
 

-         function drawImproveOSM(selection) {
-           var service = getService();
-           var surface = context.surface();
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
+             context.enter(modeSelect(context, [_houseID]));
+           } // disallow scrolling

 
 

-           if (surface && !surface.empty()) {
-             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
-           }

 
 

-           drawLayer = selection.selectAll('.layer-improveOSM').data(service ? [0] : []);
-           drawLayer.exit().remove();
-           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-improveOSM').style('display', _layerEnabled$1 ? 'block' : 'none').merge(drawLayer);
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
+             var button = context.container().select('.preset-category-building .preset-list-button');
+             reveal(button.node(), helpHtml('intro.buildings.choose_category_building', {
+               category: buildingCatetory.name()
+             }));
+             button.on('click.intro', function () {
+               button.on('click.intro', null);
+               continueTo(choosePresetHouse);
+             });
+           }, 400); // after preset list pane visible..

 
 

-           if (_layerEnabled$1) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               service.loadIssues(projection);
-               updateMarkers();
-             } else {
-               editOff();
+           context.on('enter.intro', function (mode) {
+             if (!_houseID || !context.hasEntity(_houseID)) {
+               return continueTo(addHouse);

              }
              }

-           }
-         } // Toggles the layer on and off

 
 

+             var ids = context.selectedIDs();

 
 

-         drawImproveOSM.enabled = function (val) {
-           if (!arguments.length) return _layerEnabled$1;
-           _layerEnabled$1 = val;
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
+               return continueTo(chooseCategoryBuilding);
+             }
+           });

 
 

-           if (_layerEnabled$1) {
-             layerOn();
-           } else {
-             layerOff();
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.preset-list-button').on('click.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

-             if (context.selectedErrorID()) {
-               context.enter(modeBrowse(context));
-             }
+         function choosePresetHouse() {
+           if (!_houseID || !context.hasEntity(_houseID)) {
+             return addHouse();

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
+           var ids = context.selectedIDs();

 
 

-         drawImproveOSM.supported = function () {
-           return !!getService();
-         };
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
+             context.enter(modeSelect(context, [_houseID]));
+           } // disallow scrolling

 
 

-         return drawImproveOSM;
-       }

 
 

-       var _layerEnabled$2 = false;
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
+             var button = context.container().select('.preset-building-house .preset-list-button');
+             reveal(button.node(), helpHtml('intro.buildings.choose_preset_house', {
+               preset: housePreset.name()
+             }), {
+               duration: 300
+             });
+             button.on('click.intro', function () {
+               button.on('click.intro', null);
+               continueTo(closeEditorHouse);
+             });
+           }, 400); // after preset list pane visible..

 
 

-       var _qaService$2;
+           context.on('enter.intro', function (mode) {
+             if (!_houseID || !context.hasEntity(_houseID)) {
+               return continueTo(addHouse);
+             }

 
 

-       function svgOsmose(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           return dispatch.call('change');
-         }, 1000);
+             var ids = context.selectedIDs();

 
 

-         var minZoom = 12;
-         var touchLayer = select(null);
-         var drawLayer = select(null);
-         var layerVisible = false;
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
+               return continueTo(chooseCategoryBuilding);
+             }
+           });

 
 

-         function markerPath(selection, klass) {
-           selection.attr('class', klass).attr('transform', 'translate(-10, -28)').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
-         } // Loosely-coupled osmose service for fetching issues
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.container().select('.preset-list-button').on('click.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }

 
 

+         function closeEditorHouse() {
+           if (!_houseID || !context.hasEntity(_houseID)) {
+             return addHouse();
+           }

 
 

-         function getService() {
-           if (services.osmose && !_qaService$2) {
-             _qaService$2 = services.osmose;
+           var ids = context.selectedIDs();

 
 

-             _qaService$2.on('loaded', throttledRedraw);
-           } else if (!services.osmose && _qaService$2) {
-             _qaService$2 = null;
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
+             context.enter(modeSelect(context, [_houseID]));

            }
 
            }
 

-           return _qaService$2;
-         } // Show the markers
-
+           context.history().checkpoint('hasHouse');
+           context.on('exit.intro', function () {
+             continueTo(rightClickHouse);
+           });
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
+               button: icon('#iD-icon-close', 'inline')
+             }));
+           }, 500);

 
 

-         function editOn() {
-           if (!layerVisible) {
-             layerVisible = true;
-             drawLayer.style('display', 'block');
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();

            }
            }

-         } // Immediately remove the markers and their touch targets
+         }

 
 

+         function rightClickHouse() {
+           if (!_houseID) return chapter.restart();
+           context.enter(modeBrowse(context));
+           context.history().reset('hasHouse');
+           var zoom = context.map().zoom();

 
 

-         function editOff() {
-           if (layerVisible) {
-             layerVisible = false;
-             drawLayer.style('display', 'none');
-             drawLayer.selectAll('.qaItem.osmose').remove();
-             touchLayer.selectAll('.qaItem.osmose').remove();
+           if (zoom < 20) {
+             zoom = 20;

            }
            }

-         } // Enable the layer.  This shows the markers and transitions them to visible.
-

 
 

-         function layerOn() {
-           editOn();
-           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
-             return dispatch.call('change');
+           context.map().centerZoomEase(house, zoom, 500);
+           context.on('enter.intro', function (mode) {
+             if (mode.id !== 'select') return;
+             var ids = context.selectedIDs();
+             if (ids.length !== 1 || ids[0] !== _houseID) return;
+             timeout(function () {
+               var node = selectMenuItem(context, 'orthogonalize').node();
+               if (!node) return;
+               continueTo(clickSquare);
+             }, 50); // after menu visible
+           });
+           context.map().on('move.intro drawn.intro', function () {
+             var rightclickString = helpHtml('intro.buildings.' + (context.lastPointerType() === 'mouse' ? 'rightclick_building' : 'edit_menu_building_touch'));
+             revealHouse(house, rightclickString, {
+               duration: 0
+             });
+           });
+           context.history().on('change.intro', function () {
+             continueTo(rightClickHouse);

            });
            });

-         } // Disable the layer.  This transitions the layer invisible and then hides the markers.

 
 

+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-         function layerOff() {
-           throttledRedraw.cancel();
-           drawLayer.interrupt();
-           touchLayer.selectAll('.qaItem.osmose').remove();
-           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
-             editOff();
-             dispatch.call('change');
+         function clickSquare() {
+           if (!_houseID) return chapter.restart();
+           var entity = context.hasEntity(_houseID);
+           if (!entity) return continueTo(rightClickHouse);
+           var node = selectMenuItem(context, 'orthogonalize').node();
+
+           if (!node) {
+             return continueTo(rightClickHouse);
+           }
+
+           var wasChanged = false;
+           reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
+             padding: 50

            });
            });

-         } // Update the issue markers
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'browse') {
+               continueTo(rightClickHouse);
+             } else if (mode.id === 'move' || mode.id === 'rotate') {
+               continueTo(retryClickSquare);
+             }
+           });
+           context.map().on('move.intro', function () {
+             var node = selectMenuItem(context, 'orthogonalize').node();

 
 

+             if (!wasChanged && !node) {
+               return continueTo(rightClickHouse);
+             }

 
 

-         function updateMarkers() {
-           if (!layerVisible || !_layerEnabled$2) return;
-           var service = getService();
-           var selectedID = context.selectedErrorID();
-           var data = service ? service.getItems(projection) : [];
-           var getTransform = svgPointTransform(projection); // Draw markers..
+             reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
+               duration: 0,
+               padding: 50
+             });
+           });
+           context.history().on('change.intro', function () {
+             wasChanged = true;
+             context.history().on('change.intro', null); // Something changed.  Wait for transition to complete and check undo annotation.

 
 

-           var markers = drawLayer.selectAll('.qaItem.osmose').data(data, function (d) {
-             return d.id;
-           }); // exit
+             timeout(function () {
+               if (context.history().undoAnnotation() === _t('operations.orthogonalize.annotation.feature', {
+                 n: 1
+               })) {
+                 continueTo(doneSquare);
+               } else {
+                 continueTo(retryClickSquare);
+               }
+             }, 500); // after transitioned actions
+           });

 
 

-           markers.exit().remove(); // enter
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }

 
 

-           var markersEnter = markers.enter().append('g').attr('class', function (d) {
-             return "qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
+         function retryClickSquare() {
+           context.enter(modeBrowse(context));
+           revealHouse(house, helpHtml('intro.buildings.retry_square'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(rightClickHouse);
+             }

            });
            });

-           markersEnter.append('polygon').call(markerPath, 'shadow');
-           markersEnter.append('ellipse').attr('cx', 0).attr('cy', 0).attr('rx', 4.5).attr('ry', 2).attr('class', 'stroke');
-           markersEnter.append('polygon').attr('fill', function (d) {
-             return service.getColor(d.item);
-           }).call(markerPath, 'qaItem-fill');
-           markersEnter.append('use').attr('transform', 'translate(-6.5, -23)').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('xlink:href', function (d) {
-             var picon = d.icon;

 
 

-             if (!picon) {
-               return '';
-             } else {
-               var isMaki = /^maki-/.test(picon);
-               return "#".concat(picon).concat(isMaki ? '-11' : '');
+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }
+
+         function doneSquare() {
+           context.history().checkpoint('doneSquare');
+           revealHouse(house, helpHtml('intro.buildings.done_square'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(addTank);

              }
              }

-           }); // update
+           });

 
 

-           markers.merge(markersEnter).sort(sortY).classed('selected', function (d) {
-             return d.id === selectedID;
-           }).attr('transform', getTransform); // Draw targets..
+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }

 
 

-           if (touchLayer.empty()) return;
-           var fillClass = context.getDebug('target') ? 'pink' : 'nocolor';
-           var targets = touchLayer.selectAll('.qaItem.osmose').data(data, function (d) {
-             return d.id;
-           }); // exit
+         function addTank() {
+           context.enter(modeBrowse(context));
+           context.history().reset('doneSquare');
+           _tankID = null;
+           var msec = transitionTime(tank, context.map().center());

 
 

-           targets.exit().remove(); // enter/update
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });
+           }

 
 

-           targets.enter().append('rect').attr('width', '20px').attr('height', '30px').attr('x', '-10px').attr('y', '-28px').merge(targets).sort(sortY).attr('class', function (d) {
-             return "qaItem ".concat(d.service, " target ").concat(fillClass, " itemId-").concat(d.id);
-           }).attr('transform', getTransform);
+           context.map().centerZoomEase(tank, 19.5, msec);
+           timeout(function () {
+             reveal('button.add-area', helpHtml('intro.buildings.add_tank'));
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'add-area') return;
+               continueTo(startTank);
+             });
+           }, msec + 100);

 
 

-           function sortY(a, b) {
-             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : b.loc[1] - a.loc[1];
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

-         } // Draw the Osmose layer and schedule loading issues and updating markers.
+         }

 
 

+         function startTank() {
+           if (context.mode().id !== 'add-area') {
+             return continueTo(addTank);
+           }

 
 

-         function drawOsmose(selection) {
-           var service = getService();
-           var surface = context.surface();
+           _tankID = null;
+           timeout(function () {
+             var startString = helpHtml('intro.buildings.start_tank') + helpHtml('intro.buildings.tank_edge_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap'));
+             revealTank(tank, startString);
+             context.map().on('move.intro drawn.intro', function () {
+               revealTank(tank, startString, {
+                 duration: 0
+               });
+             });
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'draw-area') return chapter.restart();
+               continueTo(continueTank);
+             });
+           }, 550); // after easing

 
 

-           if (surface && !surface.empty()) {
-             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           drawLayer = selection.selectAll('.layer-osmose').data(service ? [0] : []);
-           drawLayer.exit().remove();
-           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-osmose').style('display', _layerEnabled$2 ? 'block' : 'none').merge(drawLayer);
+         function continueTank() {
+           if (context.mode().id !== 'draw-area') {
+             return continueTo(addTank);
+           }

 
 

-           if (_layerEnabled$2) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               service.loadIssues(projection);
-               updateMarkers();
+           _tankID = null;
+           var continueString = helpHtml('intro.buildings.continue_tank') + '{br}' + helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.buildings.finish_tank');
+           revealTank(tank, continueString);
+           context.map().on('move.intro drawn.intro', function () {
+             revealTank(tank, continueString, {
+               duration: 0
+             });
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'draw-area') {
+               return;
+             } else if (mode.id === 'select') {
+               _tankID = context.selectedIDs()[0];
+               return continueTo(searchPresetTank);

              } else {
              } else {

-               editOff();
+               return continueTo(addTank);

              }
              }

+           });
+
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();

            }
            }

-         } // Toggles the layer on and off
+         }

 
 

+         function searchPresetTank() {
+           if (!_tankID || !context.hasEntity(_tankID)) {
+             return addTank();
+           }

 
 

-         drawOsmose.enabled = function (val) {
-           if (!arguments.length) return _layerEnabled$2;
-           _layerEnabled$2 = val;
+           var ids = context.selectedIDs();

 
 

-           if (_layerEnabled$2) {
-             // Strings supplied by Osmose fetched before showing layer for first time
-             // NOTE: Currently no way to change locale in iD at runtime, would need to re-call this method if that's ever implemented
-             // Also, If layer is toggled quickly multiple requests are sent
-             getService().loadStrings().then(layerOn)["catch"](function (err) {
-               console.log(err); // eslint-disable-line no-console
-             });
-           } else {
-             layerOff();
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
+             context.enter(modeSelect(context, [_tankID]));
+           } // disallow scrolling

 
 

-             if (context.selectedErrorID()) {
-               context.enter(modeBrowse(context));
-             }
-           }

 
 

-           dispatch.call('change');
-           return this;
-         };
+           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           timeout(function () {
+             // reset pane, in case user somehow happened to change it..
+             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
+             context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+             reveal('.preset-search-input', helpHtml('intro.buildings.search_tank', {
+               preset: tankPreset.name()
+             }));
+           }, 400); // after preset list pane visible..

 
 

-         drawOsmose.supported = function () {
-           return !!getService();
-         };
+           context.on('enter.intro', function (mode) {
+             if (!_tankID || !context.hasEntity(_tankID)) {
+               return continueTo(addTank);
+             }

 
 

-         return drawOsmose;
-       }
+             var ids = context.selectedIDs();

 
 

-       function svgStreetside(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _tankID) {
+               // keep the user's area selected..
+               context.enter(modeSelect(context, [_tankID])); // reset pane, in case user somehow happened to change it..

 
 

-         var minZoom = 14;
-         var minMarkerZoom = 16;
-         var minViewfieldZoom = 18;
-         var layer = select(null);
-         var _viewerYaw = 0;
-         var _selectedSequence = null;
+               context.container().select('.inspector-wrap .panewrap').style('right', '-100%'); // disallow scrolling

 
 

-         var _streetside;
-         /**
-          * init().
-          */
+               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
+               reveal('.preset-search-input', helpHtml('intro.buildings.search_tank', {
+                 preset: tankPreset.name()
+               }));
+               context.history().on('change.intro', null);
+             }
+           });

 
 

+           function checkPresetSearch() {
+             var first = context.container().select('.preset-list-item:first-child');

 
 

-         function init() {
-           if (svgStreetside.initialized) return; // run once
+             if (first.classed('preset-man_made-storage_tank')) {
+               reveal(first.select('.preset-list-button').node(), helpHtml('intro.buildings.choose_tank', {
+                 preset: tankPreset.name()
+               }), {
+                 duration: 300
+               });
+               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
+               context.history().on('change.intro', function () {
+                 continueTo(closeEditorTank);
+               });
+             }
+           }

 
 

-           svgStreetside.enabled = false;
-           svgStreetside.initialized = true;
+           function continueTo(nextStep) {
+             context.container().select('.inspector-wrap').on('wheel.intro', null);
+             context.on('enter.intro', null);
+             context.history().on('change.intro', null);
+             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+             nextStep();
+           }

          }
          }

-         /**
-          * getService().
-          */
-

 
 

-         function getService() {
-           if (services.streetside && !_streetside) {
-             _streetside = services.streetside;
-
-             _streetside.event.on('viewerChanged.svgStreetside', viewerChanged).on('loadedImages.svgStreetside', throttledRedraw);
-           } else if (!services.streetside && _streetside) {
-             _streetside = null;
+         function closeEditorTank() {
+           if (!_tankID || !context.hasEntity(_tankID)) {
+             return addTank();

            }
 
            }
 

-           return _streetside;
-         }
-         /**
-          * showLayer().
-          */
+           var ids = context.selectedIDs();

 
 

+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
+             context.enter(modeSelect(context, [_tankID]));
+           }

 
 

-         function showLayer() {
-           var service = getService();
-           if (!service) return;
-           editOn();
-           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
-             dispatch.call('change');
+           context.history().checkpoint('hasTank');
+           context.on('exit.intro', function () {
+             continueTo(rightClickTank);

            });
            });

+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
+               button: icon('#iD-icon-close', 'inline')
+             }));
+           }, 500);
+
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();
+           }

          }
          }

-         /**
-          * hideLayer().
-          */

 
 

+         function rightClickTank() {
+           if (!_tankID) return continueTo(addTank);
+           context.enter(modeBrowse(context));
+           context.history().reset('hasTank');
+           context.map().centerEase(tank, 500);
+           timeout(function () {
+             context.on('enter.intro', function (mode) {
+               if (mode.id !== 'select') return;
+               var ids = context.selectedIDs();
+               if (ids.length !== 1 || ids[0] !== _tankID) return;
+               timeout(function () {
+                 var node = selectMenuItem(context, 'circularize').node();
+                 if (!node) return;
+                 continueTo(clickCircle);
+               }, 50); // after menu visible
+             });
+             var rightclickString = helpHtml('intro.buildings.' + (context.lastPointerType() === 'mouse' ? 'rightclick_tank' : 'edit_menu_tank_touch'));
+             revealTank(tank, rightclickString);
+             context.map().on('move.intro drawn.intro', function () {
+               revealTank(tank, rightclickString, {
+                 duration: 0
+               });
+             });
+             context.history().on('change.intro', function () {
+               continueTo(rightClickTank);
+             });
+           }, 600);

 
 

-         function hideLayer() {
-           throttledRedraw.cancel();
-           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }

          }
          }

-         /**
-          * editOn().
-          */

 
 

+         function clickCircle() {
+           if (!_tankID) return chapter.restart();
+           var entity = context.hasEntity(_tankID);
+           if (!entity) return continueTo(rightClickTank);
+           var node = selectMenuItem(context, 'circularize').node();

 
 

-         function editOn() {
-           layer.style('display', 'block');
-         }
-         /**
-          * editOff().
-          */
+           if (!node) {
+             return continueTo(rightClickTank);
+           }

 
 

+           var wasChanged = false;
+           reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
+             padding: 50
+           });
+           context.on('enter.intro', function (mode) {
+             if (mode.id === 'browse') {
+               continueTo(rightClickTank);
+             } else if (mode.id === 'move' || mode.id === 'rotate') {
+               continueTo(retryClickCircle);
+             }
+           });
+           context.map().on('move.intro', function () {
+             var node = selectMenuItem(context, 'circularize').node();

 
 

-         function editOff() {
-           layer.selectAll('.viewfield-group').remove();
-           layer.style('display', 'none');
-         }
-         /**
-          * click() Handles 'bubble' point click event.
-          */
+             if (!wasChanged && !node) {
+               return continueTo(rightClickTank);
+             }

 
 

+             reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
+               duration: 0,
+               padding: 50
+             });
+           });
+           context.history().on('change.intro', function () {
+             wasChanged = true;
+             context.history().on('change.intro', null); // Something changed.  Wait for transition to complete and check undo annotation.

 
 

-         function click(d3_event, d) {
-           var service = getService();
-           if (!service) return; // try to preserve the viewer rotation when staying on the same sequence
+             timeout(function () {
+               if (context.history().undoAnnotation() === _t('operations.circularize.annotation.feature', {
+                 n: 1
+               })) {
+                 continueTo(play);
+               } else {
+                 continueTo(retryClickCircle);
+               }
+             }, 500); // after transitioned actions
+           });

 
 

-           if (d.sequenceKey !== _selectedSequence) {
-             _viewerYaw = 0; // reset
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();

            }
            }

+         }

 
 

-           _selectedSequence = d.sequenceKey;
-           service.ensureViewerLoaded(context).then(function () {
-             service.selectImage(context, d.key).yaw(_viewerYaw).showViewer(context);
+         function retryClickCircle() {
+           context.enter(modeBrowse(context));
+           revealTank(tank, helpHtml('intro.buildings.retry_circle'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(rightClickTank);
+             }

            });
            });

-           context.map().centerEase(d.loc);
-         }
-         /**
-          * mouseover().
-          */

 
 

+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }

 
 

-         function mouseover(d3_event, d) {
-           var service = getService();
-           if (service) service.setStyles(context, d);
+         function play() {
+           dispatch.call('done');
+           reveal('.ideditor', helpHtml('intro.buildings.play', {
+             next: _t('intro.startediting.title')
+           }), {
+             tooltipBox: '.intro-nav-wrap .chapter-startEditing',
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               reveal('.ideditor');
+             }
+           });

          }
          }

-         /**
-          * mouseout().
-          */

 
 

+         chapter.enter = function () {
+           addHouse();
+         };

 
 

-         function mouseout() {
-           var service = getService();
-           if (service) service.setStyles(context, null);
-         }
-         /**
-          * transform().
-          */
+         chapter.exit = function () {
+           timeouts.forEach(window.clearTimeout);
+           context.on('enter.intro exit.intro', null);
+           context.map().on('move.intro drawn.intro', null);
+           context.history().on('change.intro', null);
+           context.container().select('.inspector-wrap').on('wheel.intro', null);
+           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+           context.container().select('.more-fields .combobox-input').on('click.intro', null);
+         };

 
 

+         chapter.restart = function () {
+           chapter.exit();
+           chapter.enter();
+         };

 
 

-         function transform(d) {
-           var t = svgPointTransform(projection)(d);
-           var rot = d.ca + _viewerYaw;
+         return utilRebind(chapter, dispatch, 'on');
+       }

 
 

-           if (rot) {
-             t += ' rotate(' + Math.floor(rot) + ',0,0)';
-           }
+       function uiIntroStartEditing(context, reveal) {
+         var dispatch = dispatch$8('done', 'startEditing');
+         var modalSelection = select(null);
+         var chapter = {
+           title: 'intro.startediting.title'
+         };

 
 

-           return t;
+         function showHelp() {
+           reveal('.map-control.help-control', helpHtml('intro.startediting.help'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               shortcuts();
+             }
+           });

          }
 
          }
 

-         function viewerChanged() {
-           var service = getService();
-           if (!service) return;
-           var viewer = service.viewer();
-           if (!viewer) return; // update viewfield rotation
+         function shortcuts() {
+           reveal('.map-control.help-control', helpHtml('intro.startediting.shortcuts'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               showSave();
+             }
+           });
+         }

 
 

-           _viewerYaw = viewer.getYaw(); // avoid updating if the map is currently transformed
-           // e.g. during drags or easing.
+         function showSave() {
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts

 
 

-           if (context.map().isTransformed()) return;
-           layer.selectAll('.viewfield-group.currentView').attr('transform', transform);
+           reveal('.top-toolbar button.save', helpHtml('intro.startediting.save'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               showStart();
+             }
+           });

          }
 
          }
 

-         context.photos().on('change.streetside', update);
+         function showStart() {
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts

 
 

-         function filterBubbles(bubbles) {
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
+           modalSelection = uiModal(context.container());
+           modalSelection.select('.modal').attr('class', 'modal-splash modal');
+           modalSelection.selectAll('.close').remove();
+           var startbutton = modalSelection.select('.content').attr('class', 'fillL').append('button').attr('class', 'modal-section huge-modal-button').on('click', function () {
+             modalSelection.remove();
+           });
+           startbutton.append('svg').attr('class', 'illustration').append('use').attr('xlink:href', '#iD-logo-walkthrough');
+           startbutton.append('h2').html(_t.html('intro.startediting.start'));
+           dispatch.call('startEditing');
+         }

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             bubbles = bubbles.filter(function (bubble) {
-               return new Date(bubble.captured_at).getTime() >= fromTimestamp;
-             });
-           }
+         chapter.enter = function () {
+           showHelp();
+         };

 
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             bubbles = bubbles.filter(function (bubble) {
-               return new Date(bubble.captured_at).getTime() <= toTimestamp;
-             });
-           }
+         chapter.exit = function () {
+           modalSelection.remove();
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+         };

 
 

-           if (usernames) {
-             bubbles = bubbles.filter(function (bubble) {
-               return usernames.indexOf(bubble.captured_by) !== -1;
-             });
-           }
+         return utilRebind(chapter, dispatch, 'on');
+       }

 
 

-           return bubbles;
-         }
+       var chapterUi = {
+         welcome: uiIntroWelcome,
+         navigation: uiIntroNavigation,
+         point: uiIntroPoint,
+         area: uiIntroArea,
+         line: uiIntroLine,
+         building: uiIntroBuilding,
+         startEditing: uiIntroStartEditing
+       };
+       var chapterFlow = ['welcome', 'navigation', 'point', 'area', 'line', 'building', 'startEditing'];
+       function uiIntro(context) {
+         var INTRO_IMAGERY = 'EsriWorldImageryClarity';
+         var _introGraph = {};

 
 

-         function filterSequences(sequences) {
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
+         var _currChapter;

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             sequences = sequences.filter(function (sequences) {
-               return new Date(sequences.properties.captured_at).getTime() >= fromTimestamp;
-             });
-           }
+         function intro(selection) {
+           _mainFileFetcher.get('intro_graph').then(function (dataIntroGraph) {
+             // create entities for intro graph and localize names
+             for (var id in dataIntroGraph) {
+               if (!_introGraph[id]) {
+                 _introGraph[id] = osmEntity(localize(dataIntroGraph[id]));
+               }
+             }

 
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             sequences = sequences.filter(function (sequences) {
-               return new Date(sequences.properties.captured_at).getTime() <= toTimestamp;
-             });
-           }
+             selection.call(startIntro);
+           })["catch"](function () {
+             /* ignore */
+           });
+         }

 
 

-           if (usernames) {
-             sequences = sequences.filter(function (sequences) {
-               return usernames.indexOf(sequences.properties.captured_by) !== -1;
-             });
-           }
+         function startIntro(selection) {
+           context.enter(modeBrowse(context)); // Save current map state

 
 

-           return sequences;
-         }
-         /**
-          * update().
-          */
+           var osm = context.connection();
+           var history = context.history().toJSON();
+           var hash = window.location.hash;
+           var center = context.map().center();
+           var zoom = context.map().zoom();
+           var background = context.background().baseLayerSource();
+           var overlays = context.background().overlayLayerSources();
+           var opacity = context.container().selectAll('.main-map .layer-background').style('opacity');
+           var caches = osm && osm.caches();
+           var baseEntities = context.history().graph().base().entities; // Show sidebar and disable the sidebar resizing button
+           // (this needs to be before `context.inIntro(true)`)

 
 

+           context.ui().sidebar.expand();
+           context.container().selectAll('button.sidebar-toggle').classed('disabled', true); // Block saving

 
 

-         function update() {
-           var viewer = context.container().select('.photoviewer');
-           var selected = viewer.empty() ? undefined : viewer.datum();
-           var z = ~~context.map().zoom();
-           var showMarkers = z >= minMarkerZoom;
-           var showViewfields = z >= minViewfieldZoom;
-           var service = getService();
-           var sequences = [];
-           var bubbles = [];
+           context.inIntro(true); // Load semi-real data used in intro

 
 

-           if (context.photos().showsPanoramic()) {
-             sequences = service ? service.sequences(projection) : [];
-             bubbles = service && showMarkers ? service.bubbles(projection) : [];
-             sequences = filterSequences(sequences);
-             bubbles = filterBubbles(bubbles);
+           if (osm) {
+             osm.toggle(false).reset();

            }
 
            }
 

-           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
-             return d.properties.key;
-           }); // exit
+           context.history().reset();
+           context.history().merge(Object.values(coreGraph().load(_introGraph).entities));
+           context.history().checkpoint('initial'); // Setup imagery

 
 

-           traces.exit().remove(); // enter/update
+           var imagery = context.background().findSource(INTRO_IMAGERY);

 
 

-           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
-           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(bubbles, function (d) {
-             // force reenter once bubbles are attached to a sequence
-             return d.key + (d.sequenceKey ? 'v1' : 'v0');
-           }); // exit
+           if (imagery) {
+             context.background().baseLayerSource(imagery);
+           } else {
+             context.background().bing();
+           }

 
 

-           groups.exit().remove(); // enter
+           overlays.forEach(function (d) {
+             return context.background().toggleOverlayLayer(d);
+           }); // Setup data layers (only OSM)

 
 

-           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
-           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+           var layers = context.layers();
+           layers.all().forEach(function (item) {
+             // if the layer has the function `enabled`
+             if (typeof item.layer.enabled === 'function') {
+               item.layer.enabled(item.id === 'osm');
+             }
+           });
+           context.container().selectAll('.main-map .layer-background').style('opacity', 1);
+           var curtain = uiCurtain(context.container().node());
+           selection.call(curtain); // Store that the user started the walkthrough..

 
 

-           var markers = groups.merge(groupsEnter).sort(function (a, b) {
-             return a === selected ? 1 : b === selected ? -1 : b.loc[1] - a.loc[1];
-           }).attr('transform', transform).select('.viewfield-scale');
-           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
-           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
-           viewfields.exit().remove(); // viewfields may or may not be drawn...
-           // but if they are, draw below the circles
+           corePreferences('walkthrough_started', 'yes'); // Restore previous walkthrough progress..

 
 

-           viewfields.enter().insert('path', 'circle').attr('class', 'viewfield').attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', viewfieldPath);
+           var storedProgress = corePreferences('walkthrough_progress') || '';
+           var progress = storedProgress.split(';').filter(Boolean);
+           var chapters = chapterFlow.map(function (chapter, i) {
+             var s = chapterUi[chapter](context, curtain.reveal).on('done', function () {
+               buttons.filter(function (d) {
+                 return d.title === s.title;
+               }).classed('finished', true);

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;
+               if (i < chapterFlow.length - 1) {
+                 var next = chapterFlow[i + 1];
+                 context.container().select("button.chapter-".concat(next)).classed('next', true);
+               } // Store walkthrough progress..

 
 

-             if (d.pano) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
-             } else {
-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
-             }
-           }
-         }
-         /**
-          * drawImages()
-          * drawImages is the method that is returned (and that runs) every time 'svgStreetside()' is called.
-          * 'svgStreetside()' is called from index.js
-          */

 
 

+               progress.push(chapter);
+               corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';'));
+             });
+             return s;
+           });
+           chapters[chapters.length - 1].on('startEditing', function () {
+             // Store walkthrough progress..
+             progress.push('startEditing');
+             corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';')); // Store if walkthrough is completed..

 
 

-         function drawImages(selection) {
-           var enabled = svgStreetside.enabled;
-           var service = getService();
-           layer = selection.selectAll('.layer-streetside-images').data(service ? [0] : []);
-           layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-streetside-images').style('display', enabled ? 'block' : 'none');
-           layerEnter.append('g').attr('class', 'sequences');
-           layerEnter.append('g').attr('class', 'markers');
-           layer = layerEnter.merge(layer);
+             var incomplete = utilArrayDifference(chapterFlow, progress);

 
 

-           if (enabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               update();
-               service.loadBubbles(projection);
-             } else {
-               editOff();
+             if (!incomplete.length) {
+               corePreferences('walkthrough_completed', 'yes');

              }
              }

-           }
-         }
-         /**
-          * drawImages.enabled().
-          */

 
 

+             curtain.remove();
+             navwrap.remove();
+             context.container().selectAll('.main-map .layer-background').style('opacity', opacity);
+             context.container().selectAll('button.sidebar-toggle').classed('disabled', false);

 
 

-         drawImages.enabled = function (_) {
-           if (!arguments.length) return svgStreetside.enabled;
-           svgStreetside.enabled = _;
+             if (osm) {
+               osm.toggle(true).reset().caches(caches);
+             }

 
 

-           if (svgStreetside.enabled) {
-             showLayer();
-           } else {
-             hideLayer();
-           }
+             context.history().reset().merge(Object.values(baseEntities));
+             context.background().baseLayerSource(background);
+             overlays.forEach(function (d) {
+               return context.background().toggleOverlayLayer(d);
+             });

 
 

-           dispatch.call('change');
-           return this;
-         };
-         /**
-          * drawImages.supported().
-          */
+             if (history) {
+               context.history().fromJSON(history, false);
+             }

 
 

+             context.map().centerZoom(center, zoom);
+             window.location.replace(hash);
+             context.inIntro(false);
+           });
+           var navwrap = selection.append('div').attr('class', 'intro-nav-wrap fillD');
+           navwrap.append('svg').attr('class', 'intro-nav-wrap-logo').append('use').attr('xlink:href', '#iD-logo-walkthrough');
+           var buttonwrap = navwrap.append('div').attr('class', 'joined').selectAll('button.chapter');
+           var buttons = buttonwrap.data(chapters).enter().append('button').attr('class', function (d, i) {
+             return "chapter chapter-".concat(chapterFlow[i]);
+           }).on('click', enterChapter);
+           buttons.append('span').html(function (d) {
+             return _t.html(d.title);
+           });
+           buttons.append('span').attr('class', 'status').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward', 'inline'));
+           enterChapter(null, chapters[0]);

 
 

-         drawImages.supported = function () {
-           return !!getService();
-         };
+           function enterChapter(d3_event, newChapter) {
+             if (_currChapter) {
+               _currChapter.exit();
+             }

 
 

-         init();
-         return drawImages;
-       }
+             context.enter(modeBrowse(context));
+             _currChapter = newChapter;

 
 

-       function svgMapillaryImages(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+             _currChapter.enter();

 
 

-         var minZoom = 12;
-         var minMarkerZoom = 16;
-         var minViewfieldZoom = 18;
-         var layer = select(null);
+             buttons.classed('next', false).classed('active', function (d) {
+               return d.title === _currChapter.title;
+             });
+           }
+         }

 
 

-         var _mapillary;
+         return intro;
+       }

 
 

-         var viewerCompassAngle;
+       function uiIssuesInfo(context) {
+         var warningsItem = {
+           id: 'warnings',
+           count: 0,
+           iconID: 'iD-icon-alert',
+           descriptionID: 'issues.warnings_and_errors'
+         };
+         var resolvedItem = {
+           id: 'resolved',
+           count: 0,
+           iconID: 'iD-icon-apply',
+           descriptionID: 'issues.user_resolved_issues'
+         };

 
 

-         function init() {
-           if (svgMapillaryImages.initialized) return; // run once
+         function update(selection) {
+           var shownItems = [];
+           var liveIssues = context.validator().getIssues({
+             what: corePreferences('validate-what') || 'edited',
+             where: corePreferences('validate-where') || 'all'
+           });

 
 

-           svgMapillaryImages.enabled = false;
-           svgMapillaryImages.initialized = true;
-         }
+           if (liveIssues.length) {
+             warningsItem.count = liveIssues.length;
+             shownItems.push(warningsItem);
+           }

 
 

-         function getService() {
-           if (services.mapillary && !_mapillary) {
-             _mapillary = services.mapillary;
+           if (corePreferences('validate-what') === 'all') {
+             var resolvedIssues = context.validator().getResolvedIssues();

 
 

-             _mapillary.event.on('loadedImages', throttledRedraw);
-           } else if (!services.mapillary && _mapillary) {
-             _mapillary = null;
+             if (resolvedIssues.length) {
+               resolvedItem.count = resolvedIssues.length;
+               shownItems.push(resolvedItem);
+             }

            }
 
            }
 

-           return _mapillary;
-         }
-
-         function showLayer() {
-           var service = getService();
-           if (!service) return;
-           editOn();
-           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
-             dispatch.call('change');
+           var chips = selection.selectAll('.chip').data(shownItems, function (d) {
+             return d.id;

            });
            });

-         }
-
-         function hideLayer() {
-           throttledRedraw.cancel();
-           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
-         }
-
-         function editOn() {
-           layer.style('display', 'block');
-         }
+           chips.exit().remove();
+           var enter = chips.enter().append('a').attr('class', function (d) {
+             return 'chip ' + d.id + '-count';
+           }).attr('href', '#').each(function (d) {
+             var chipSelection = select(this);
+             var tooltipBehavior = uiTooltip().placement('top').title(_t.html(d.descriptionID));
+             chipSelection.call(tooltipBehavior).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               tooltipBehavior.hide(select(this)); // open the Issues pane

 
 

-         function editOff() {
-           layer.selectAll('.viewfield-group').remove();
-           layer.style('display', 'none');
+               context.ui().togglePanes(context.container().select('.map-panes .issues-pane'));
+             });
+             chipSelection.call(svgIcon('#' + d.iconID));
+           });
+           enter.append('span').attr('class', 'count');
+           enter.merge(chips).selectAll('span.count').html(function (d) {
+             return d.count.toString();
+           });

          }
 
          }
 

-         function click(d3_event, d) {
-           var service = getService();
-           if (!service) return;
-           service.ensureViewerLoaded(context).then(function () {
-             service.selectImage(context, d.key).showViewer(context);
+         return function (selection) {
+           update(selection);
+           context.validator().on('validated.infobox', function () {
+             update(selection);

            });
            });

-           context.map().centerEase(d.loc);
-         }
+         };
+       }

 
 

-         function mouseover(d) {
-           var service = getService();
-           if (service) service.setStyles(context, d);
-         }
+       function uiMapInMap(context) {
+         function mapInMap(selection) {
+           var backgroundLayer = rendererTileLayer(context);
+           var overlayLayers = {};
+           var projection = geoRawMercator();
+           var dataLayer = svgData(projection, context).showLabels(false);
+           var debugLayer = svgDebug(projection, context);
+           var zoom = d3_zoom().scaleExtent([geoZoomToScale(0.5), geoZoomToScale(24)]).on('start', zoomStarted).on('zoom', zoomed).on('end', zoomEnded);
+           var wrap = select(null);
+           var tiles = select(null);
+           var viewport = select(null);
+           var _isTransformed = false;
+           var _isHidden = true;
+           var _skipEvents = false;
+           var _gesture = null;
+           var _zDiff = 6; // by default, minimap renders at (main zoom - 6)

 
 

-         function mouseout() {
-           var service = getService();
-           if (service) service.setStyles(context, null);
-         }
+           var _dMini; // dimensions of minimap

 
 

-         function transform(d) {
-           var t = svgPointTransform(projection)(d);

 
 

-           if (d.pano && viewerCompassAngle !== null && isFinite(viewerCompassAngle)) {
-             t += ' rotate(' + Math.floor(viewerCompassAngle) + ',0,0)';
-           } else if (d.ca) {
-             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';
-           }
+           var _cMini; // center pixel of minimap

 
 

-           return t;
-         }

 
 

-         context.photos().on('change.mapillary_images', update);
+           var _tStart; // transform at start of gesture

 
 

-         function filterImages(images) {
-           var showsPano = context.photos().showsPanoramic();
-           var showsFlat = context.photos().showsFlat();
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();

 
 

-           if (!showsPano || !showsFlat) {
-             images = images.filter(function (image) {
-               if (image.pano) return showsPano;
-               return showsFlat;
-             });
-           }
+           var _tCurr; // transform at most recent event

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             images = images.filter(function (image) {
-               return new Date(image.captured_at).getTime() >= fromTimestamp;
-             });
-           }

 
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             images = images.filter(function (image) {
-               return new Date(image.captured_at).getTime() <= toTimestamp;
-             });
-           }
+           var _timeoutID;

 
 

-           if (usernames) {
-             images = images.filter(function (image) {
-               return usernames.indexOf(image.captured_by) !== -1;
-             });
+           function zoomStarted() {
+             if (_skipEvents) return;
+             _tStart = _tCurr = projection.transform();
+             _gesture = null;

            }
 
            }
 

-           return images;
-         }
+           function zoomed(d3_event) {
+             if (_skipEvents) return;
+             var x = d3_event.transform.x;
+             var y = d3_event.transform.y;
+             var k = d3_event.transform.k;
+             var isZooming = k !== _tStart.k;
+             var isPanning = x !== _tStart.x || y !== _tStart.y;

 
 

-         function filterSequences(sequences, service) {
-           var showsPano = context.photos().showsPanoramic();
-           var showsFlat = context.photos().showsFlat();
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
+             if (!isZooming && !isPanning) {
+               return; // no change
+             } // lock in either zooming or panning, don't allow both in minimap.

 
 

-           if (!showsPano || !showsFlat) {
-             sequences = sequences.filter(function (sequence) {
-               if (sequence.properties.hasOwnProperty('pano')) {
-                 if (sequence.properties.pano) return showsPano;
-                 return showsFlat;
-               } else {
-                 // if the sequence doesn't specify pano or not, search its images
-                 var cProps = sequence.properties.coordinateProperties;

 
 

-                 if (cProps && cProps.image_keys && cProps.image_keys.length > 0) {
-                   for (var index in cProps.image_keys) {
-                     var imageKey = cProps.image_keys[index];
-                     var image = service.cachedImage(imageKey);
+             if (!_gesture) {
+               _gesture = isZooming ? 'zoom' : 'pan';
+             }

 
 

-                     if (image && image.hasOwnProperty('pano')) {
-                       if (image.pano) return showsPano;
-                       return showsFlat;
-                     }
-                   }
-                 }
-               }
+             var tMini = projection.transform();
+             var tX, tY, scale;

 
 

-               return false;
-             });
-           }
+             if (_gesture === 'zoom') {
+               scale = k / tMini.k;
+               tX = (_cMini[0] / scale - _cMini[0]) * scale;
+               tY = (_cMini[1] / scale - _cMini[1]) * scale;
+             } else {
+               k = tMini.k;
+               scale = 1;
+               tX = x - tMini.x;
+               tY = y - tMini.y;
+             }

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             sequences = sequences.filter(function (sequence) {
-               return new Date(sequence.properties.captured_at).getTime() >= fromTimestamp;
-             });
+             utilSetTransform(tiles, tX, tY, scale);
+             utilSetTransform(viewport, 0, 0, scale);
+             _isTransformed = true;
+             _tCurr = identity$2.translate(x, y).scale(k);
+             var zMain = geoScaleToZoom(context.projection.scale());
+             var zMini = geoScaleToZoom(k);
+             _zDiff = zMain - zMini;
+             queueRedraw();

            }
 
            }
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             sequences = sequences.filter(function (sequence) {
-               return new Date(sequence.properties.captured_at).getTime() <= toTimestamp;
-             });
+           function zoomEnded() {
+             if (_skipEvents) return;
+             if (_gesture !== 'pan') return;
+             updateProjection();
+             _gesture = null;
+             context.map().center(projection.invert(_cMini)); // recenter main map..

            }
 
            }
 

-           if (usernames) {
-             sequences = sequences.filter(function (sequence) {
-               return usernames.indexOf(sequence.properties.username) !== -1;
-             });
-           }
+           function updateProjection() {
+             var loc = context.map().center();
+             var tMain = context.projection.transform();
+             var zMain = geoScaleToZoom(tMain.k);
+             var zMini = Math.max(zMain - _zDiff, 0.5);
+             var kMini = geoZoomToScale(zMini);
+             projection.translate([tMain.x, tMain.y]).scale(kMini);
+             var point = projection(loc);
+             var mouse = _gesture === 'pan' ? geoVecSubtract([_tCurr.x, _tCurr.y], [_tStart.x, _tStart.y]) : [0, 0];
+             var xMini = _cMini[0] - point[0] + tMain.x + mouse[0];
+             var yMini = _cMini[1] - point[1] + tMain.y + mouse[1];
+             projection.translate([xMini, yMini]).clipExtent([[0, 0], _dMini]);
+             _tCurr = projection.transform();

 
 

-           return sequences;
-         }
+             if (_isTransformed) {
+               utilSetTransform(tiles, 0, 0);
+               utilSetTransform(viewport, 0, 0);
+               _isTransformed = false;
+             }

 
 

-         function update() {
-           var z = ~~context.map().zoom();
-           var showMarkers = z >= minMarkerZoom;
-           var showViewfields = z >= minViewfieldZoom;
-           var service = getService();
-           var sequences = service ? service.sequences(projection) : [];
-           var images = service && showMarkers ? service.images(projection) : [];
-           images = filterImages(images);
-           sequences = filterSequences(sequences, service);
-           service.filterViewer(context);
-           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
-             return d.properties.key;
-           }); // exit
+             zoom.scaleExtent([geoZoomToScale(0.5), geoZoomToScale(zMain - 3)]);
+             _skipEvents = true;
+             wrap.call(zoom.transform, _tCurr);
+             _skipEvents = false;
+           }

 
 

-           traces.exit().remove(); // enter/update
+           function redraw() {
+             clearTimeout(_timeoutID);
+             if (_isHidden) return;
+             updateProjection();
+             var zMini = geoScaleToZoom(projection.scale()); // setup tile container

 
 

-           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
-           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(images, function (d) {
-             return d.key;
-           }); // exit
+             tiles = wrap.selectAll('.map-in-map-tiles').data([0]);
+             tiles = tiles.enter().append('div').attr('class', 'map-in-map-tiles').merge(tiles); // redraw background

 
 

-           groups.exit().remove(); // enter
+             backgroundLayer.source(context.background().baseLayerSource()).projection(projection).dimensions(_dMini);
+             var background = tiles.selectAll('.map-in-map-background').data([0]);
+             background.enter().append('div').attr('class', 'map-in-map-background').merge(background).call(backgroundLayer); // redraw overlay

 
 

-           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
-           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+             var overlaySources = context.background().overlayLayerSources();
+             var activeOverlayLayers = [];

 
 

-           var markers = groups.merge(groupsEnter).sort(function (a, b) {
-             return b.loc[1] - a.loc[1]; // sort Y
-           }).attr('transform', transform).select('.viewfield-scale');
-           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
-           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
-           viewfields.exit().remove();
-           viewfields.enter() // viewfields may or may not be drawn...
-           .insert('path', 'circle') // but if they are, draw below the circles
-           .attr('class', 'viewfield').classed('pano', function () {
-             return this.parentNode.__data__.pano;
-           }).attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', viewfieldPath);
+             for (var i = 0; i < overlaySources.length; i++) {
+               if (overlaySources[i].validZoom(zMini)) {
+                 if (!overlayLayers[i]) overlayLayers[i] = rendererTileLayer(context);
+                 activeOverlayLayers.push(overlayLayers[i].source(overlaySources[i]).projection(projection).dimensions(_dMini));
+               }
+             }

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;
+             var overlay = tiles.selectAll('.map-in-map-overlay').data([0]);
+             overlay = overlay.enter().append('div').attr('class', 'map-in-map-overlay').merge(overlay);
+             var overlays = overlay.selectAll('div').data(activeOverlayLayers, function (d) {
+               return d.source().name();
+             });
+             overlays.exit().remove();
+             overlays = overlays.enter().append('div').merge(overlays).each(function (layer) {
+               select(this).call(layer);
+             });
+             var dataLayers = tiles.selectAll('.map-in-map-data').data([0]);
+             dataLayers.exit().remove();
+             dataLayers = dataLayers.enter().append('svg').attr('class', 'map-in-map-data').merge(dataLayers).call(dataLayer).call(debugLayer); // redraw viewport bounding box

 
 

-             if (d.pano) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
-             } else {
-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
+             if (_gesture !== 'pan') {
+               var getPath = d3_geoPath(projection);
+               var bbox = {
+                 type: 'Polygon',
+                 coordinates: [context.map().extent().polygon()]
+               };
+               viewport = wrap.selectAll('.map-in-map-viewport').data([0]);
+               viewport = viewport.enter().append('svg').attr('class', 'map-in-map-viewport').merge(viewport);
+               var path = viewport.selectAll('.map-in-map-bbox').data([bbox]);
+               path.enter().append('path').attr('class', 'map-in-map-bbox').merge(path).attr('d', getPath).classed('thick', function (d) {
+                 return getPath.area(d) < 30;
+               });

              }
            }
              }
            }

-         }
-
-         function drawImages(selection) {
-           var enabled = svgMapillaryImages.enabled;
-           var service = getService();
-           layer = selection.selectAll('.layer-mapillary').data(service ? [0] : []);
-           layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-mapillary').style('display', enabled ? 'block' : 'none');
-           layerEnter.append('g').attr('class', 'sequences');
-           layerEnter.append('g').attr('class', 'markers');
-           layer = layerEnter.merge(layer);

 
 

-           if (enabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               update();
-               service.loadImages(projection);
-             } else {
-               editOff();
-             }
+           function queueRedraw() {
+             clearTimeout(_timeoutID);
+             _timeoutID = setTimeout(function () {
+               redraw();
+             }, 750);

            }
            }

-         }

 
 

-         drawImages.enabled = function (_) {
-           if (!arguments.length) return svgMapillaryImages.enabled;
-           svgMapillaryImages.enabled = _;
+           function toggle(d3_event) {
+             if (d3_event) d3_event.preventDefault();
+             _isHidden = !_isHidden;
+             context.container().select('.minimap-toggle-item').classed('active', !_isHidden).select('input').property('checked', !_isHidden);

 
 

-           if (svgMapillaryImages.enabled) {
-             showLayer();
-           } else {
-             hideLayer();
+             if (_isHidden) {
+               wrap.style('display', 'block').style('opacity', '1').transition().duration(200).style('opacity', '0').on('end', function () {
+                 selection.selectAll('.map-in-map').style('display', 'none');
+               });
+             } else {
+               wrap.style('display', 'block').style('opacity', '0').transition().duration(200).style('opacity', '1').on('end', function () {
+                 redraw();
+               });
+             }

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
+           uiMapInMap.toggle = toggle;
+           wrap = selection.selectAll('.map-in-map').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'map-in-map').style('display', _isHidden ? 'none' : 'block').call(zoom).on('dblclick.zoom', null).merge(wrap); // reflow warning: Hardcode dimensions - currently can't resize it anyway..

 
 

-         drawImages.supported = function () {
-           return !!getService();
-         };
+           _dMini = [200, 150]; //utilGetDimensions(wrap);

 
 

-         init();
-         return drawImages;
+           _cMini = geoVecScale(_dMini, 0.5);
+           context.map().on('drawn.map-in-map', function (drawn) {
+             if (drawn.full === true) {
+               redraw();
+             }
+           });
+           redraw();
+           context.keybinding().on(_t('background.minimap.key'), toggle);
+         }
+
+         return mapInMap;

        }
 
        }
 

-       function svgMapillaryPosition(projection, context) {
-         var throttledRedraw = throttle(function () {
-           update();
-         }, 1000);
+       function uiNotice(context) {
+         return function (selection) {
+           var div = selection.append('div').attr('class', 'notice');
+           var button = div.append('button').attr('class', 'zoom-to notice fillD').on('click', function () {
+             context.map().zoomEase(context.minEditableZoom());
+           }).on('wheel', function (d3_event) {
+             // let wheel events pass through #4482
+             var e2 = new WheelEvent(d3_event.type, d3_event);
+             context.surface().node().dispatchEvent(e2);
+           });
+           button.call(svgIcon('#iD-icon-plus', 'pre-text')).append('span').attr('class', 'label').html(_t.html('zoom_in_edit'));

 
 

-         var minZoom = 12;
-         var minViewfieldZoom = 18;
-         var layer = select(null);
+           function disableTooHigh() {
+             var canEdit = context.map().zoom() >= context.minEditableZoom();
+             div.style('display', canEdit ? 'none' : 'block');
+           }

 
 

-         var _mapillary;
+           context.map().on('move.notice', debounce(disableTooHigh, 500));
+           disableTooHigh();
+         };
+       }

 
 

-         var viewerCompassAngle;
+       function uiPhotoviewer(context) {
+         var dispatch = dispatch$8('resize');

 
 

-         function init() {
-           if (svgMapillaryPosition.initialized) return; // run once
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-           svgMapillaryPosition.initialized = true;
-         }
+         function photoviewer(selection) {
+           selection.append('button').attr('class', 'thumb-hide').on('click', function () {
+             if (services.streetside) {
+               services.streetside.hideViewer(context);
+             }

 
 

-         function getService() {
-           if (services.mapillary && !_mapillary) {
-             _mapillary = services.mapillary;
+             if (services.mapillary) {
+               services.mapillary.hideViewer(context);
+             }

 
 

-             _mapillary.event.on('nodeChanged', throttledRedraw);
+             if (services.openstreetcam) {
+               services.openstreetcam.hideViewer(context);
+             }
+           }).append('div').call(svgIcon('#iD-icon-close'));

 
 

-             _mapillary.event.on('bearingChanged', function (e) {
-               viewerCompassAngle = e;
-               if (context.map().isTransformed()) return;
-               layer.selectAll('.viewfield-group.currentView').filter(function (d) {
-                 return d.pano;
-               }).attr('transform', transform);
-             });
-           } else if (!services.mapillary && _mapillary) {
-             _mapillary = null;
+           function preventDefault(d3_event) {
+             d3_event.preventDefault();

            }
 
            }
 

-           return _mapillary;
-         }
-
-         function editOn() {
-           layer.style('display', 'block');
-         }
-
-         function editOff() {
-           layer.selectAll('.viewfield-group').remove();
-           layer.style('display', 'none');
-         }
+           selection.append('button').attr('class', 'resize-handle-xy').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch, {
+             resizeOnX: true,
+             resizeOnY: true
+           }));
+           selection.append('button').attr('class', 'resize-handle-x').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch, {
+             resizeOnX: true
+           }));
+           selection.append('button').attr('class', 'resize-handle-y').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch, {
+             resizeOnY: true
+           }));

 
 

-         function transform(d) {
-           var t = svgPointTransform(projection)(d);
+           function buildResizeListener(target, eventName, dispatch, options) {
+             var resizeOnX = !!options.resizeOnX;
+             var resizeOnY = !!options.resizeOnY;
+             var minHeight = options.minHeight || 240;
+             var minWidth = options.minWidth || 320;
+             var pointerId;
+             var startX;
+             var startY;
+             var startWidth;
+             var startHeight;

 
 

-           if (d.pano && viewerCompassAngle !== null && isFinite(viewerCompassAngle)) {
-             t += ' rotate(' + Math.floor(viewerCompassAngle) + ',0,0)';
-           } else if (d.ca) {
-             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';
-           }
+             function startResize(d3_event) {
+               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               var mapSize = context.map().dimensions();

 
 

-           return t;
-         }
+               if (resizeOnX) {
+                 var maxWidth = mapSize[0];
+                 var newWidth = clamp(startWidth + d3_event.clientX - startX, minWidth, maxWidth);
+                 target.style('width', newWidth + 'px');
+               }

 
 

-         function update() {
-           var z = ~~context.map().zoom();
-           var showViewfields = z >= minViewfieldZoom;
-           var service = getService();
-           var node = service && service.getActiveImage();
-           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(node ? [node] : [], function (d) {
-             return d.key;
-           }); // exit
+               if (resizeOnY) {
+                 var maxHeight = mapSize[1] - 90; // preserve space at top/bottom of map

 
 

-           groups.exit().remove(); // enter
+                 var newHeight = clamp(startHeight + startY - d3_event.clientY, minHeight, maxHeight);
+                 target.style('height', newHeight + 'px');
+               }

 
 

-           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group currentView highlighted');
-           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+               dispatch.call(eventName, target, utilGetDimensions(target, true));
+             }

 
 

-           var markers = groups.merge(groupsEnter).attr('transform', transform).select('.viewfield-scale');
-           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
-           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
-           viewfields.exit().remove();
-           viewfields.enter().insert('path', 'circle').attr('class', 'viewfield').classed('pano', function () {
-             return this.parentNode.__data__.pano;
-           }).attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', viewfieldPath);
+             function clamp(num, min, max) {
+               return Math.max(min, Math.min(num, max));
+             }

 
 

-           function viewfieldPath() {
-             var d = this.parentNode.__data__;
+             function stopResize(d3_event) {
+               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+               d3_event.preventDefault();
+               d3_event.stopPropagation(); // remove all the listeners we added

 
 

-             if (d.pano) {
-               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
-             } else {
-               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
+               select(window).on('.' + eventName, null);

              }
              }

-           }
-         }

 
 

-         function drawImages(selection) {
-           var service = getService();
-           layer = selection.selectAll('.layer-mapillary-position').data(service ? [0] : []);
-           layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-mapillary-position');
-           layerEnter.append('g').attr('class', 'markers');
-           layer = layerEnter.merge(layer);
+             return function initResize(d3_event) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               pointerId = d3_event.pointerId || 'mouse';
+               startX = d3_event.clientX;
+               startY = d3_event.clientY;
+               var targetRect = target.node().getBoundingClientRect();
+               startWidth = targetRect.width;
+               startHeight = targetRect.height;
+               select(window).on(_pointerPrefix + 'move.' + eventName, startResize, false).on(_pointerPrefix + 'up.' + eventName, stopResize, false);

 
 

-           if (service && ~~context.map().zoom() >= minZoom) {
-             editOn();
-             update();
-           } else {
-             editOff();
+               if (_pointerPrefix === 'pointer') {
+                 select(window).on('pointercancel.' + eventName, stopResize, false);
+               }
+             };

            }
          }
 
            }
          }
 

-         drawImages.enabled = function () {
-           update();
-           return this;
-         };
+         photoviewer.onMapResize = function () {
+           var photoviewer = context.container().select('.photoviewer');
+           var content = context.container().select('.main-content');
+           var mapDimensions = utilGetDimensions(content, true); // shrink photo viewer if it is too big
+           // (-90 preserves space at top and bottom of map used by menus)

 
 

-         drawImages.supported = function () {
-           return !!getService();
+           var photoDimensions = utilGetDimensions(photoviewer, true);
+
+           if (photoDimensions[0] > mapDimensions[0] || photoDimensions[1] > mapDimensions[1] - 90) {
+             var setPhotoDimensions = [Math.min(photoDimensions[0], mapDimensions[0]), Math.min(photoDimensions[1], mapDimensions[1] - 90)];
+             photoviewer.style('width', setPhotoDimensions[0] + 'px').style('height', setPhotoDimensions[1] + 'px');
+             dispatch.call('resize', photoviewer, setPhotoDimensions);
+           }

          };
 
          };
 

-         init();
-         return drawImages;
+         return utilRebind(photoviewer, dispatch, 'on');

        }
 
        }
 

-       function svgMapillarySigns(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+       function uiRestore(context) {
+         return function (selection) {
+           if (!context.history().hasRestorableChanges()) return;
+           var modalSelection = uiModal(selection, true);
+           modalSelection.select('.modal').attr('class', 'modal fillL');
+           var introModal = modalSelection.select('.content');
+           introModal.append('div').attr('class', 'modal-section').append('h3').html(_t.html('restore.heading'));
+           introModal.append('div').attr('class', 'modal-section').append('p').html(_t.html('restore.description'));
+           var buttonWrap = introModal.append('div').attr('class', 'modal-actions');
+           var restore = buttonWrap.append('button').attr('class', 'restore').on('click', function () {
+             context.history().restore();
+             modalSelection.remove();
+           });
+           restore.append('svg').attr('class', 'logo logo-restore').append('use').attr('xlink:href', '#iD-logo-restore');
+           restore.append('div').html(_t.html('restore.restore'));
+           var reset = buttonWrap.append('button').attr('class', 'reset').on('click', function () {
+             context.history().clearSaved();
+             modalSelection.remove();
+           });
+           reset.append('svg').attr('class', 'logo logo-reset').append('use').attr('xlink:href', '#iD-logo-reset');
+           reset.append('div').html(_t.html('restore.reset'));
+           restore.node().focus();
+         };
+       }

 
 

-         var minZoom = 12;
-         var layer = select(null);
+       function uiScale(context) {
+         var projection = context.projection,
+             isImperial = !_mainLocalizer.usesMetric(),
+             maxLength = 180,
+             tickHeight = 8;

 
 

-         var _mapillary;
+         function scaleDefs(loc1, loc2) {
+           var lat = (loc2[1] + loc1[1]) / 2,
+               conversion = isImperial ? 3.28084 : 1,
+               dist = geoLonToMeters(loc2[0] - loc1[0], lat) * conversion,
+               scale = {
+             dist: 0,
+             px: 0,
+             text: ''
+           },
+               buckets,
+               i,
+               val,
+               dLon;

 
 

-         function init() {
-           if (svgMapillarySigns.initialized) return; // run once
+           if (isImperial) {
+             buckets = [5280000, 528000, 52800, 5280, 500, 50, 5, 1];
+           } else {
+             buckets = [5000000, 500000, 50000, 5000, 500, 50, 5, 1];
+           } // determine a user-friendly endpoint for the scale

 
 

-           svgMapillarySigns.enabled = false;
-           svgMapillarySigns.initialized = true;
-         }

 
 

-         function getService() {
-           if (services.mapillary && !_mapillary) {
-             _mapillary = services.mapillary;
+           for (i = 0; i < buckets.length; i++) {
+             val = buckets[i];

 
 

-             _mapillary.event.on('loadedSigns', throttledRedraw);
-           } else if (!services.mapillary && _mapillary) {
-             _mapillary = null;
+             if (dist >= val) {
+               scale.dist = Math.floor(dist / val) * val;
+               break;
+             } else {
+               scale.dist = +dist.toFixed(2);
+             }

            }
 
            }
 

-           return _mapillary;
+           dLon = geoMetersToLon(scale.dist / conversion, lat);
+           scale.px = Math.round(projection([loc1[0] + dLon, loc1[1]])[0]);
+           scale.text = displayLength(scale.dist / conversion, isImperial);
+           return scale;

          }
 
          }
 

-         function showLayer() {
-           var service = getService();
-           if (!service) return;
-           service.loadSignResources(context);
-           editOn();
+         function update(selection) {
+           // choose loc1, loc2 along bottom of viewport (near where the scale will be drawn)
+           var dims = context.map().dimensions(),
+               loc1 = projection.invert([0, dims[1]]),
+               loc2 = projection.invert([maxLength, dims[1]]),
+               scale = scaleDefs(loc1, loc2);
+           selection.select('.scale-path').attr('d', 'M0.5,0.5v' + tickHeight + 'h' + scale.px + 'v-' + tickHeight);
+           selection.select('.scale-text').style(_mainLocalizer.textDirection() === 'ltr' ? 'left' : 'right', scale.px + 16 + 'px').html(scale.text);

          }
 
          }
 

-         function hideLayer() {
-           throttledRedraw.cancel();
-           editOff();
-         }
+         return function (selection) {
+           function switchUnits() {
+             isImperial = !isImperial;
+             selection.call(update);
+           }

 
 

-         function editOn() {
-           layer.style('display', 'block');
-         }
+           var scalegroup = selection.append('svg').attr('class', 'scale').on('click', switchUnits).append('g').attr('transform', 'translate(10,11)');
+           scalegroup.append('path').attr('class', 'scale-path');
+           selection.append('div').attr('class', 'scale-text');
+           selection.call(update);
+           context.map().on('move.scale', function () {
+             update(selection);
+           });
+         };
+       }

 
 

-         function editOff() {
-           layer.selectAll('.icon-sign').remove();
-           layer.style('display', 'none');
-         }
+       function uiShortcuts(context) {
+         var detected = utilDetect();
+         var _activeTab = 0;

 
 

-         function click(d3_event, d) {
-           var service = getService();
-           if (!service) return;
-           context.map().centerEase(d.loc);
-           var selectedImageKey = service.getSelectedImageKey();
-           var imageKey;
-           var highlightedDetection; // Pick one of the images the sign was detected in,
-           // preference given to an image already selected.
+         var _modalSelection;

 
 

-           d.detections.forEach(function (detection) {
-             if (!imageKey || selectedImageKey === detection.image_key) {
-               imageKey = detection.image_key;
-               highlightedDetection = detection;
-             }
-           });
+         var _selection = select(null);

 
 

-           if (imageKey === selectedImageKey) {
-             service.highlightDetection(highlightedDetection).selectImage(context, imageKey);
-           } else {
-             service.ensureViewerLoaded(context).then(function () {
-               service.highlightDetection(highlightedDetection).selectImage(context, imageKey).showViewer(context);
-             });
-           }
-         }
+         var _dataShortcuts;

 
 

-         function update() {
-           var service = getService();
-           var data = service ? service.signs(projection) : [];
-           var selectedImageKey = service.getSelectedImageKey();
-           var transform = svgPointTransform(projection);
-           var signs = layer.selectAll('.icon-sign').data(data, function (d) {
-             return d.key;
-           }); // exit
+         function shortcutsModal(_modalSelection) {
+           _modalSelection.select('.modal').classed('modal-shortcuts', true);

 
 

-           signs.exit().remove(); // enter
+           var content = _modalSelection.select('.content');

 
 

-           var enter = signs.enter().append('g').attr('class', 'icon-sign icon-detected').on('click', click);
-           enter.append('use').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px').attr('xlink:href', function (d) {
-             return '#' + d.value;
+           content.append('div').attr('class', 'modal-section').append('h3').html(_t.html('shortcuts.title'));
+           _mainFileFetcher.get('shortcuts').then(function (data) {
+             _dataShortcuts = data;
+             content.call(render);
+           })["catch"](function () {
+             /* ignore */

            });
            });

-           enter.append('rect').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px'); // update
+         }

 
 

-           signs.merge(enter).attr('transform', transform).classed('currentView', function (d) {
-             return d.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
-             });
-           }).sort(function (a, b) {
-             var aSelected = a.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
-             });
-             var bSelected = b.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
-             });
+         function render(selection) {
+           if (!_dataShortcuts) return;
+           var wrapper = selection.selectAll('.wrapper').data([0]);
+           var wrapperEnter = wrapper.enter().append('div').attr('class', 'wrapper modal-section');
+           var tabsBar = wrapperEnter.append('div').attr('class', 'tabs-bar');
+           var shortcutsList = wrapperEnter.append('div').attr('class', 'shortcuts-list');
+           wrapper = wrapper.merge(wrapperEnter);
+           var tabs = tabsBar.selectAll('.tab').data(_dataShortcuts);
+           var tabsEnter = tabs.enter().append('a').attr('class', 'tab').attr('href', '#').on('click', function (d3_event, d) {
+             d3_event.preventDefault();

 
 

-             if (aSelected === bSelected) {
-               return b.loc[1] - a.loc[1]; // sort Y
-             } else if (aSelected) {
-               return 1;
-             }
+             var i = _dataShortcuts.indexOf(d);

 
 

-             return -1;
+             _activeTab = i;
+             render(selection);

            });
            });

-         }
-
-         function drawSigns(selection) {
-           var enabled = svgMapillarySigns.enabled;
-           var service = getService();
-           layer = selection.selectAll('.layer-mapillary-signs').data(service ? [0] : []);
-           layer.exit().remove();
-           layer = layer.enter().append('g').attr('class', 'layer-mapillary-signs layer-mapillary-detections').style('display', enabled ? 'block' : 'none').merge(layer);
+           tabsEnter.append('span').html(function (d) {
+             return _t.html(d.text);
+           }); // Update

 
 

-           if (enabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               update();
-               service.loadSigns(projection);
-               service.showSignDetections(true);
+           wrapper.selectAll('.tab').classed('active', function (d, i) {
+             return i === _activeTab;
+           });
+           var shortcuts = shortcutsList.selectAll('.shortcut-tab').data(_dataShortcuts);
+           var shortcutsEnter = shortcuts.enter().append('div').attr('class', function (d) {
+             return 'shortcut-tab shortcut-tab-' + d.tab;
+           });
+           var columnsEnter = shortcutsEnter.selectAll('.shortcut-column').data(function (d) {
+             return d.columns;
+           }).enter().append('table').attr('class', 'shortcut-column');
+           var rowsEnter = columnsEnter.selectAll('.shortcut-row').data(function (d) {
+             return d.rows;
+           }).enter().append('tr').attr('class', 'shortcut-row');
+           var sectionRows = rowsEnter.filter(function (d) {
+             return !d.shortcuts;
+           });
+           sectionRows.append('td');
+           sectionRows.append('td').attr('class', 'shortcut-section').append('h3').html(function (d) {
+             return _t.html(d.text);
+           });
+           var shortcutRows = rowsEnter.filter(function (d) {
+             return d.shortcuts;
+           });
+           var shortcutKeys = shortcutRows.append('td').attr('class', 'shortcut-keys');
+           var modifierKeys = shortcutKeys.filter(function (d) {
+             return d.modifiers;
+           });
+           modifierKeys.selectAll('kbd.modifier').data(function (d) {
+             if (detected.os === 'win' && d.text === 'shortcuts.editing.commands.redo') {
+               return ['⌘'];
+             } else if (detected.os !== 'mac' && d.text === 'shortcuts.browsing.display_options.fullscreen') {
+               return [];

              } else {
              } else {

-               editOff();
+               return d.modifiers;

              }
              }

-           } else if (service) {
-             service.showSignDetections(false);
-           }
-         }
-
-         drawSigns.enabled = function (_) {
-           if (!arguments.length) return svgMapillarySigns.enabled;
-           svgMapillarySigns.enabled = _;
+           }).enter().each(function () {
+             var selection = select(this);
+             selection.append('kbd').attr('class', 'modifier').html(function (d) {
+               return uiCmd.display(d);
+             });
+             selection.append('span').html('+');
+           });
+           shortcutKeys.selectAll('kbd.shortcut').data(function (d) {
+             var arr = d.shortcuts;

 
 

-           if (svgMapillarySigns.enabled) {
-             showLayer();
-           } else {
-             hideLayer();
-           }
+             if (detected.os === 'win' && d.text === 'shortcuts.editing.commands.redo') {
+               arr = ['Y'];
+             } else if (detected.os !== 'mac' && d.text === 'shortcuts.browsing.display_options.fullscreen') {
+               arr = ['F11'];
+             } // replace translations

 
 

-           dispatch.call('change');
-           return this;
-         };

 
 

-         drawSigns.supported = function () {
-           return !!getService();
-         };
+             arr = arr.map(function (s) {
+               return uiCmd.display(s.indexOf('.') !== -1 ? _t(s) : s);
+             });
+             return utilArrayUniq(arr).map(function (s) {
+               return {
+                 shortcut: s,
+                 separator: d.separator,
+                 suffix: d.suffix
+               };
+             });
+           }).enter().each(function (d, i, nodes) {
+             var selection = select(this);
+             var click = d.shortcut.toLowerCase().match(/(.*).click/);

 
 

-         init();
-         return drawSigns;
-       }
+             if (click && click[1]) {
+               // replace "left_click", "right_click" with mouse icon
+               selection.call(svgIcon('#iD-walkthrough-mouse-' + click[1], 'operation'));
+             } else if (d.shortcut.toLowerCase() === 'long-press') {
+               selection.call(svgIcon('#iD-walkthrough-longpress', 'longpress operation'));
+             } else if (d.shortcut.toLowerCase() === 'tap') {
+               selection.call(svgIcon('#iD-walkthrough-tap', 'tap operation'));
+             } else {
+               selection.append('kbd').attr('class', 'shortcut').html(function (d) {
+                 return d.shortcut;
+               });
+             }

 
 

-       function svgMapillaryMapFeatures(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+             if (i < nodes.length - 1) {
+               selection.append('span').html(d.separator || "\xA0" + _t.html('shortcuts.or') + "\xA0");
+             } else if (i === nodes.length - 1 && d.suffix) {
+               selection.append('span').html(d.suffix);
+             }
+           });
+           shortcutKeys.filter(function (d) {
+             return d.gesture;
+           }).each(function () {
+             var selection = select(this);
+             selection.append('span').html('+');
+             selection.append('span').attr('class', 'gesture').html(function (d) {
+               return _t.html(d.gesture);
+             });
+           });
+           shortcutRows.append('td').attr('class', 'shortcut-desc').html(function (d) {
+             return d.text ? _t.html(d.text) : "\xA0";
+           }); // Update

 
 

-         var minZoom = 12;
-         var layer = select(null);
+           wrapper.selectAll('.shortcut-tab').style('display', function (d, i) {
+             return i === _activeTab ? 'flex' : 'none';
+           });
+         }

 
 

-         var _mapillary;
+         return function (selection, show) {
+           _selection = selection;

 
 

-         function init() {
-           if (svgMapillaryMapFeatures.initialized) return; // run once
+           if (show) {
+             _modalSelection = uiModal(selection);

 
 

-           svgMapillaryMapFeatures.enabled = false;
-           svgMapillaryMapFeatures.initialized = true;
-         }
+             _modalSelection.call(shortcutsModal);
+           } else {
+             context.keybinding().on([_t('shortcuts.toggle.key'), '?'], function () {
+               if (context.container().selectAll('.modal-shortcuts').size()) {
+                 // already showing
+                 if (_modalSelection) {
+                   _modalSelection.close();

 
 

-         function getService() {
-           if (services.mapillary && !_mapillary) {
-             _mapillary = services.mapillary;
+                   _modalSelection = null;
+                 }
+               } else {
+                 _modalSelection = uiModal(_selection);

 
 

-             _mapillary.event.on('loadedMapFeatures', throttledRedraw);
-           } else if (!services.mapillary && _mapillary) {
-             _mapillary = null;
+                 _modalSelection.call(shortcutsModal);
+               }
+             });

            }
            }

+         };
+       }

 
 

-           return _mapillary;
-         }
+       function uiDataHeader() {
+         var _datum;

 
 

-         function showLayer() {
-           var service = getService();
-           if (!service) return;
-           service.loadObjectResources(context);
-           editOn();
+         function dataHeader(selection) {
+           var header = selection.selectAll('.data-header').data(_datum ? [_datum] : [], function (d) {
+             return d.__featurehash__;
+           });
+           header.exit().remove();
+           var headerEnter = header.enter().append('div').attr('class', 'data-header');
+           var iconEnter = headerEnter.append('div').attr('class', 'data-header-icon');
+           iconEnter.append('div').attr('class', 'preset-icon-28').call(svgIcon('#iD-icon-data', 'note-fill'));
+           headerEnter.append('div').attr('class', 'data-header-label').html(_t.html('map_data.layers.custom.title'));

          }
 
          }
 

-         function hideLayer() {
-           throttledRedraw.cancel();
-           editOff();
-         }
+         dataHeader.datum = function (val) {
+           if (!arguments.length) return _datum;
+           _datum = val;
+           return this;
+         };

 
 

-         function editOn() {
-           layer.style('display', 'block');
-         }
+         return dataHeader;
+       }

 
 

-         function editOff() {
-           layer.selectAll('.icon-map-feature').remove();
-           layer.style('display', 'none');
-         }
+       // It is keyed on the `value` of the entry. Data should be an array of objects like:
+       //   [{
+       //       value:   'string value',  // required
+       //       display: 'label html'     // optional
+       //       title:   'hover text'     // optional
+       //       terms:   ['search terms'] // optional
+       //   }, ...]

 
 

-         function click(d3_event, d) {
-           var service = getService();
-           if (!service) return;
-           context.map().centerEase(d.loc);
-           var selectedImageKey = service.getSelectedImageKey();
-           var imageKey;
-           var highlightedDetection; // Pick one of the images the map feature was detected in,
-           // preference given to an image already selected.
+       var _comboHideTimerID;

 
 

-           d.detections.forEach(function (detection) {
-             if (!imageKey || selectedImageKey === detection.image_key) {
-               imageKey = detection.image_key;
-               highlightedDetection = detection;
-             }
-           });
+       function uiCombobox(context, klass) {
+         var dispatch = dispatch$8('accept', 'cancel');
+         var container = context.container();
+         var _suggestions = [];
+         var _data = [];
+         var _fetched = {};
+         var _selected = null;
+         var _canAutocomplete = true;
+         var _caseSensitive = false;
+         var _cancelFetch = false;
+         var _minItems = 2;
+         var _tDown = 0;

 
 

-           if (imageKey === selectedImageKey) {
-             service.highlightDetection(highlightedDetection).selectImage(context, imageKey);
-           } else {
-             service.ensureViewerLoaded(context).then(function () {
-               service.highlightDetection(highlightedDetection).selectImage(context, imageKey).showViewer(context);
-             });
-           }
-         }
+         var _mouseEnterHandler, _mouseLeaveHandler;

 
 

-         function update() {
-           var service = getService();
-           var data = service ? service.mapFeatures(projection) : [];
-           var selectedImageKey = service && service.getSelectedImageKey();
-           var transform = svgPointTransform(projection);
-           var mapFeatures = layer.selectAll('.icon-map-feature').data(data, function (d) {
-             return d.key;
-           }); // exit
+         var _fetcher = function _fetcher(val, cb) {
+           cb(_data.filter(function (d) {
+             var terms = d.terms || [];
+             terms.push(d.value);
+             return terms.some(function (term) {
+               return term.toString().toLowerCase().indexOf(val.toLowerCase()) !== -1;
+             });
+           }));
+         };

 
 

-           mapFeatures.exit().remove(); // enter
+         var combobox = function combobox(input, attachTo) {
+           if (!input || input.empty()) return;
+           input.classed('combobox-input', true).on('focus.combo-input', focus).on('blur.combo-input', blur).on('keydown.combo-input', keydown).on('keyup.combo-input', keyup).on('input.combo-input', change).on('mousedown.combo-input', mousedown).each(function () {
+             var parent = this.parentNode;
+             var sibling = this.nextSibling;
+             select(parent).selectAll('.combobox-caret').filter(function (d) {
+               return d === input.node();
+             }).data([input.node()]).enter().insert('div', function () {
+               return sibling;
+             }).attr('class', 'combobox-caret').on('mousedown.combo-caret', function (d3_event) {
+               d3_event.preventDefault(); // don't steal focus from input

 
 

-           var enter = mapFeatures.enter().append('g').attr('class', 'icon-map-feature icon-detected').on('click', click);
-           enter.append('title').text(function (d) {
-             var id = d.value.replace(/--/g, '.').replace(/-/g, '_');
-             return _t('mapillary_map_features.' + id);
-           });
-           enter.append('use').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px').attr('xlink:href', function (d) {
-             if (d.value === 'object--billboard') {
-               // no billboard icon right now, so use the advertisement icon
-               return '#object--sign--advertisement';
-             }
+               input.node().focus(); // focus the input as if it was clicked

 
 

-             return '#' + d.value;
-           });
-           enter.append('rect').attr('width', '24px').attr('height', '24px').attr('x', '-12px').attr('y', '-12px'); // update
+               mousedown(d3_event);
+             }).on('mouseup.combo-caret', function (d3_event) {
+               d3_event.preventDefault(); // don't steal focus from input

 
 

-           mapFeatures.merge(enter).attr('transform', transform).classed('currentView', function (d) {
-             return d.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
-             });
-           }).sort(function (a, b) {
-             var aSelected = a.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
-             });
-             var bSelected = b.detections.some(function (detection) {
-               return detection.image_key === selectedImageKey;
+               mouseup(d3_event);

              });
              });

+           });

 
 

-             if (aSelected === bSelected) {
-               return b.loc[1] - a.loc[1]; // sort Y
-             } else if (aSelected) {
-               return 1;
-             }
+           function mousedown(d3_event) {
+             if (d3_event.button !== 0) return; // left click only

 
 

-             return -1;
-           });
-         }
+             _tDown = +new Date(); // clear selection

 
 

-         function drawMapFeatures(selection) {
-           var enabled = svgMapillaryMapFeatures.enabled;
-           var service = getService();
-           layer = selection.selectAll('.layer-mapillary-map-features').data(service ? [0] : []);
-           layer.exit().remove();
-           layer = layer.enter().append('g').attr('class', 'layer-mapillary-map-features layer-mapillary-detections').style('display', enabled ? 'block' : 'none').merge(layer);
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');

 
 

-           if (enabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               update();
-               service.loadMapFeatures(projection);
-               service.showFeatureDetections(true);
-             } else {
-               editOff();
+             if (start !== end) {
+               var val = utilGetSetValue(input);
+               input.node().setSelectionRange(val.length, val.length);
+               return;

              }
              }

-           } else if (service) {
-             service.showFeatureDetections(false);
-           }
-         }
-
-         drawMapFeatures.enabled = function (_) {
-           if (!arguments.length) return svgMapillaryMapFeatures.enabled;
-           svgMapillaryMapFeatures.enabled = _;

 
 

-           if (svgMapillaryMapFeatures.enabled) {
-             showLayer();
-           } else {
-             hideLayer();
+             input.on('mouseup.combo-input', mouseup);

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
-
-         drawMapFeatures.supported = function () {
-           return !!getService();
-         };
-
-         init();
-         return drawMapFeatures;
-       }
-
-       function svgOpenstreetcamImages(projection, context, dispatch) {
-         var throttledRedraw = throttle(function () {
-           dispatch.call('change');
-         }, 1000);
+           function mouseup(d3_event) {
+             input.on('mouseup.combo-input', null);
+             if (d3_event.button !== 0) return; // left click only

 
 

-         var minZoom = 12;
-         var minMarkerZoom = 16;
-         var minViewfieldZoom = 18;
-         var layer = select(null);
+             if (input.node() !== document.activeElement) return; // exit if this input is not focused

 
 

-         var _openstreetcam;
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');
+             if (start !== end) return; // exit if user is selecting
+             // not showing or showing for a different field - try to show it.

 
 

-         function init() {
-           if (svgOpenstreetcamImages.initialized) return; // run once
+             var combo = container.selectAll('.combobox');

 
 

-           svgOpenstreetcamImages.enabled = false;
-           svgOpenstreetcamImages.initialized = true;
-         }
+             if (combo.empty() || combo.datum() !== input.node()) {
+               var tOrig = _tDown;
+               window.setTimeout(function () {
+                 if (tOrig !== _tDown) return; // exit if user double clicked

 
 

-         function getService() {
-           if (services.openstreetcam && !_openstreetcam) {
-             _openstreetcam = services.openstreetcam;
+                 fetchComboData('', function () {
+                   show();
+                   render();
+                 });
+               }, 250);
+             } else {
+               hide();
+             }
+           }

 
 

-             _openstreetcam.event.on('loadedImages', throttledRedraw);
-           } else if (!services.openstreetcam && _openstreetcam) {
-             _openstreetcam = null;
+           function focus() {
+             fetchComboData(''); // prefetch values (may warm taginfo cache)

            }
 
            }
 

-           return _openstreetcam;
-         }
+           function blur() {
+             _comboHideTimerID = window.setTimeout(hide, 75);
+           }

 
 

-         function showLayer() {
-           var service = getService();
-           if (!service) return;
-           editOn();
-           layer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end', function () {
-             dispatch.call('change');
-           });
-         }
+           function show() {
+             hide(); // remove any existing

 
 

-         function hideLayer() {
-           throttledRedraw.cancel();
-           layer.transition().duration(250).style('opacity', 0).on('end', editOff);
-         }
+             container.insert('div', ':first-child').datum(input.node()).attr('class', 'combobox' + (klass ? ' combobox-' + klass : '')).style('position', 'absolute').style('display', 'block').style('left', '0px').on('mousedown.combo-container', function (d3_event) {
+               // prevent moving focus out of the input field
+               d3_event.preventDefault();
+             });
+             container.on('scroll.combo-scroll', render, true);
+           }

 
 

-         function editOn() {
-           layer.style('display', 'block');
-         }
+           function hide() {
+             if (_comboHideTimerID) {
+               window.clearTimeout(_comboHideTimerID);
+               _comboHideTimerID = undefined;
+             }

 
 

-         function editOff() {
-           layer.selectAll('.viewfield-group').remove();
-           layer.style('display', 'none');
-         }
+             container.selectAll('.combobox').remove();
+             container.on('scroll.combo-scroll', null);
+           }

 
 

-         function click(d3_event, d) {
-           var service = getService();
-           if (!service) return;
-           service.ensureViewerLoaded(context).then(function () {
-             service.selectImage(context, d.key).showViewer(context);
-           });
-           context.map().centerEase(d.loc);
-         }
+           function keydown(d3_event) {
+             var shown = !container.selectAll('.combobox').empty();
+             var tagName = input.node() ? input.node().tagName.toLowerCase() : '';

 
 

-         function mouseover(d3_event, d) {
-           var service = getService();
-           if (service) service.setStyles(context, d);
-         }
+             switch (d3_event.keyCode) {
+               case 8: // ⌫ Backspace

 
 

-         function mouseout() {
-           var service = getService();
-           if (service) service.setStyles(context, null);
-         }
+               case 46:
+                 // ⌦ Delete
+                 d3_event.stopPropagation();
+                 _selected = null;
+                 render();
+                 input.on('input.combo-input', function () {
+                   var start = input.property('selectionStart');
+                   input.node().setSelectionRange(start, start);
+                   input.on('input.combo-input', change);
+                 });
+                 break;

 
 

-         function transform(d) {
-           var t = svgPointTransform(projection)(d);
+               case 9:
+                 // ⇥ Tab
+                 accept();
+                 break;

 
 

-           if (d.ca) {
-             t += ' rotate(' + Math.floor(d.ca) + ',0,0)';
-           }
+               case 13:
+                 // ↩ Return
+                 d3_event.preventDefault();
+                 d3_event.stopPropagation();
+                 break;

 
 

-           return t;
-         }
+               case 38:
+                 // ↑ Up arrow
+                 if (tagName === 'textarea' && !shown) return;
+                 d3_event.preventDefault();

 
 

-         context.photos().on('change.openstreetcam_images', update);
+                 if (tagName === 'input' && !shown) {
+                   show();
+                 }

 
 

-         function filterImages(images) {
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
+                 nav(-1);
+                 break;

 
 

-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             images = images.filter(function (item) {
-               return new Date(item.captured_at).getTime() >= fromTimestamp;
-             });
-           }
+               case 40:
+                 // ↓ Down arrow
+                 if (tagName === 'textarea' && !shown) return;
+                 d3_event.preventDefault();

 
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             images = images.filter(function (item) {
-               return new Date(item.captured_at).getTime() <= toTimestamp;
-             });
-           }
+                 if (tagName === 'input' && !shown) {
+                   show();
+                 }

 
 

-           if (usernames) {
-             images = images.filter(function (item) {
-               return usernames.indexOf(item.captured_by) !== -1;
-             });
+                 nav(+1);
+                 break;
+             }

            }
 
            }
 

-           return images;
-         }
-
-         function filterSequences(sequences) {
-           var fromDate = context.photos().fromDate();
-           var toDate = context.photos().toDate();
-           var usernames = context.photos().usernames();
-
-           if (fromDate) {
-             var fromTimestamp = new Date(fromDate).getTime();
-             sequences = sequences.filter(function (image) {
-               return new Date(image.properties.captured_at).getTime() >= fromTimestamp;
-             });
-           }
+           function keyup(d3_event) {
+             switch (d3_event.keyCode) {
+               case 27:
+                 // ⎋ Escape
+                 cancel();
+                 break;

 
 

-           if (toDate) {
-             var toTimestamp = new Date(toDate).getTime();
-             sequences = sequences.filter(function (image) {
-               return new Date(image.properties.captured_at).getTime() <= toTimestamp;
-             });
-           }
+               case 13:
+                 // ↩ Return
+                 accept();
+                 break;
+             }
+           } // Called whenever the input value is changed (e.g. on typing)

 
 

-           if (usernames) {
-             sequences = sequences.filter(function (image) {
-               return usernames.indexOf(image.properties.captured_by) !== -1;
-             });
-           }

 
 

-           return sequences;
-         }
+           function change() {
+             fetchComboData(value(), function () {
+               _selected = null;
+               var val = input.property('value');

 
 

-         function update() {
-           var viewer = context.container().select('.photoviewer');
-           var selected = viewer.empty() ? undefined : viewer.datum();
-           var z = ~~context.map().zoom();
-           var showMarkers = z >= minMarkerZoom;
-           var showViewfields = z >= minViewfieldZoom;
-           var service = getService();
-           var sequences = [];
-           var images = [];
+               if (_suggestions.length) {
+                 if (input.property('selectionEnd') === val.length) {
+                   _selected = tryAutocomplete();
+                 }

 
 

-           if (context.photos().showsFlat()) {
-             sequences = service ? service.sequences(projection) : [];
-             images = service && showMarkers ? service.images(projection) : [];
-             sequences = filterSequences(sequences);
-             images = filterImages(images);
-           }
+                 if (!_selected) {
+                   _selected = val;
+                 }
+               }

 
 

-           var traces = layer.selectAll('.sequences').selectAll('.sequence').data(sequences, function (d) {
-             return d.properties.key;
-           }); // exit
+               if (val.length) {
+                 var combo = container.selectAll('.combobox');

 
 

-           traces.exit().remove(); // enter/update
+                 if (combo.empty()) {
+                   show();
+                 }
+               } else {
+                 hide();
+               }

 
 

-           traces = traces.enter().append('path').attr('class', 'sequence').merge(traces).attr('d', svgPath(projection).geojson);
-           var groups = layer.selectAll('.markers').selectAll('.viewfield-group').data(images, function (d) {
-             return d.key;
-           }); // exit
+               render();
+             });
+           } // Called when the user presses up/down arrows to navigate the list

 
 

-           groups.exit().remove(); // enter

 
 

-           var groupsEnter = groups.enter().append('g').attr('class', 'viewfield-group').on('mouseenter', mouseover).on('mouseleave', mouseout).on('click', click);
-           groupsEnter.append('g').attr('class', 'viewfield-scale'); // update
+           function nav(dir) {
+             if (_suggestions.length) {
+               // try to determine previously selected index..
+               var index = -1;

 
 

-           var markers = groups.merge(groupsEnter).sort(function (a, b) {
-             return a === selected ? 1 : b === selected ? -1 : b.loc[1] - a.loc[1]; // sort Y
-           }).attr('transform', transform).select('.viewfield-scale');
-           markers.selectAll('circle').data([0]).enter().append('circle').attr('dx', '0').attr('dy', '0').attr('r', '6');
-           var viewfields = markers.selectAll('.viewfield').data(showViewfields ? [0] : []);
-           viewfields.exit().remove();
-           viewfields.enter() // viewfields may or may not be drawn...
-           .insert('path', 'circle') // but if they are, draw below the circles
-           .attr('class', 'viewfield').attr('transform', 'scale(1.5,1.5),translate(-8, -13)').attr('d', 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z');
-         }
+               for (var i = 0; i < _suggestions.length; i++) {
+                 if (_selected && _suggestions[i].value === _selected) {
+                   index = i;
+                   break;
+                 }
+               } // pick new _selected

 
 

-         function drawImages(selection) {
-           var enabled = svgOpenstreetcamImages.enabled,
-               service = getService();
-           layer = selection.selectAll('.layer-openstreetcam').data(service ? [0] : []);
-           layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-openstreetcam').style('display', enabled ? 'block' : 'none');
-           layerEnter.append('g').attr('class', 'sequences');
-           layerEnter.append('g').attr('class', 'markers');
-           layer = layerEnter.merge(layer);

 
 

-           if (enabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               update();
-               service.loadImages(projection);
-             } else {
-               editOff();
+               index = Math.max(Math.min(index + dir, _suggestions.length - 1), 0);
+               _selected = _suggestions[index].value;
+               input.property('value', _selected);

              }
              }

-           }
-         }
-
-         drawImages.enabled = function (_) {
-           if (!arguments.length) return svgOpenstreetcamImages.enabled;
-           svgOpenstreetcamImages.enabled = _;

 
 

-           if (svgOpenstreetcamImages.enabled) {
-             showLayer();
-           } else {
-             hideLayer();
+             render();
+             ensureVisible();

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
+           function ensureVisible() {
+             var combo = container.selectAll('.combobox');
+             if (combo.empty()) return;
+             var containerRect = container.node().getBoundingClientRect();
+             var comboRect = combo.node().getBoundingClientRect();

 
 

-         drawImages.supported = function () {
-           return !!getService();
-         };
+             if (comboRect.bottom > containerRect.bottom) {
+               var node = attachTo ? attachTo.node() : input.node();
+               node.scrollIntoView({
+                 behavior: 'instant',
+                 block: 'center'
+               });
+               render();
+             } // https://stackoverflow.com/questions/11039885/scrollintoview-causing-the-whole-page-to-move

 
 

-         init();
-         return drawImages;
-       }

 
 

-       function svgOsm(projection, context, dispatch) {
-         var enabled = true;
+             var selected = combo.selectAll('.combobox-option.selected').node();

 
 

-         function drawOsm(selection) {
-           selection.selectAll('.layer-osm').data(['covered', 'areas', 'lines', 'points', 'labels']).enter().append('g').attr('class', function (d) {
-             return 'layer-osm ' + d;
-           });
-           selection.selectAll('.layer-osm.points').selectAll('.points-group').data(['points', 'midpoints', 'vertices', 'turns']).enter().append('g').attr('class', function (d) {
-             return 'points-group ' + d;
-           });
-         }
+             if (selected) {
+               selected.scrollIntoView({
+                 behavior: 'smooth',
+                 block: 'nearest'
+               });
+             }
+           }

 
 

-         function showLayer() {
-           var layer = context.surface().selectAll('.data-layer.osm');
-           layer.interrupt();
-           layer.classed('disabled', false).style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
-             dispatch.call('change');
-           });
-         }
+           function value() {
+             var value = input.property('value');
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');

 
 

-         function hideLayer() {
-           var layer = context.surface().selectAll('.data-layer.osm');
-           layer.interrupt();
-           layer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
-             layer.classed('disabled', true);
-             dispatch.call('change');
-           });
-         }
+             if (start && end) {
+               value = value.substring(0, start);
+             }

 
 

-         drawOsm.enabled = function (val) {
-           if (!arguments.length) return enabled;
-           enabled = val;
+             return value;
+           }

 
 

-           if (enabled) {
-             showLayer();
-           } else {
-             hideLayer();
+           function fetchComboData(v, cb) {
+             _cancelFetch = false;
+
+             _fetcher.call(input, v, function (results) {
+               // already chose a value, don't overwrite or autocomplete it
+               if (_cancelFetch) return;
+               _suggestions = results;
+               results.forEach(function (d) {
+                 _fetched[d.value] = d;
+               });
+
+               if (cb) {
+                 cb();
+               }
+             });

            }
 
            }
 

-           dispatch.call('change');
-           return this;
-         };
+           function tryAutocomplete() {
+             if (!_canAutocomplete) return;
+             var val = _caseSensitive ? value() : value().toLowerCase();
+             if (!val) return; // Don't autocomplete if user is typing a number - #4935

 
 

-         return drawOsm;
-       }
+             if (!isNaN(parseFloat(val)) && isFinite(val)) return;
+             var bestIndex = -1;

 
 

-       var _notesEnabled = false;
+             for (var i = 0; i < _suggestions.length; i++) {
+               var suggestion = _suggestions[i].value;
+               var compare = _caseSensitive ? suggestion : suggestion.toLowerCase(); // if search string matches suggestion exactly, pick it..

 
 

-       var _osmService;
+               if (compare === val) {
+                 bestIndex = i;
+                 break; // otherwise lock in the first result that starts with the search string..
+               } else if (bestIndex === -1 && compare.indexOf(val) === 0) {
+                 bestIndex = i;
+               }
+             }

 
 

-       function svgNotes(projection, context, dispatch$1) {
-         if (!dispatch$1) {
-           dispatch$1 = dispatch('change');
-         }
+             if (bestIndex !== -1) {
+               var bestVal = _suggestions[bestIndex].value;
+               input.property('value', bestVal);
+               input.node().setSelectionRange(val.length, bestVal.length);
+               return bestVal;
+             }
+           }

 
 

-         var throttledRedraw = throttle(function () {
-           dispatch$1.call('change');
-         }, 1000);
+           function render() {
+             if (_suggestions.length < _minItems || document.activeElement !== input.node()) {
+               hide();
+               return;
+             }

 
 

-         var minZoom = 12;
-         var touchLayer = select(null);
-         var drawLayer = select(null);
-         var _notesVisible = false;
+             var shown = !container.selectAll('.combobox').empty();
+             if (!shown) return;
+             var combo = container.selectAll('.combobox');
+             var options = combo.selectAll('.combobox-option').data(_suggestions, function (d) {
+               return d.value;
+             });
+             options.exit().remove(); // enter/update

 
 

-         function markerPath(selection, klass) {
-           selection.attr('class', klass).attr('transform', 'translate(-8, -22)').attr('d', 'm17.5,0l-15,0c-1.37,0 -2.5,1.12 -2.5,2.5l0,11.25c0,1.37 1.12,2.5 2.5,2.5l3.75,0l0,3.28c0,0.38 0.43,0.6 0.75,0.37l4.87,-3.65l5.62,0c1.37,0 2.5,-1.12 2.5,-2.5l0,-11.25c0,-1.37 -1.12,-2.5 -2.5,-2.5z');
-         } // Loosely-coupled osm service for fetching notes.
+             options.enter().append('a').attr('class', function (d) {
+               return 'combobox-option ' + (d.klass || '');
+             }).attr('title', function (d) {
+               return d.title;
+             }).html(function (d) {
+               return d.display || d.value;
+             }).on('mouseenter', _mouseEnterHandler).on('mouseleave', _mouseLeaveHandler).merge(options).classed('selected', function (d) {
+               return d.value === _selected;
+             }).on('click.combo-option', accept).order();
+             var node = attachTo ? attachTo.node() : input.node();
+             var containerRect = container.node().getBoundingClientRect();
+             var rect = node.getBoundingClientRect();
+             combo.style('left', rect.left + 5 - containerRect.left + 'px').style('width', rect.width - 10 + 'px').style('top', rect.height + rect.top - containerRect.top + 'px');
+           } // Dispatches an 'accept' event
+           // Then hides the combobox.

 
 
 
 

-         function getService() {
-           if (services.osm && !_osmService) {
-             _osmService = services.osm;
+           function accept(d3_event, d) {
+             _cancelFetch = true;
+             var thiz = input.node();

 
 

-             _osmService.on('loadedNotes', throttledRedraw);
-           } else if (!services.osm && _osmService) {
-             _osmService = null;
-           }
+             if (d) {
+               // user clicked on a suggestion
+               utilGetSetValue(input, d.value); // replace field contents

 
 

-           return _osmService;
-         } // Show the notes
+               utilTriggerEvent(input, 'change');
+             } // clear (and keep) selection

 
 
 
 

-         function editOn() {
-           if (!_notesVisible) {
-             _notesVisible = true;
-             drawLayer.style('display', 'block');
-           }
-         } // Immediately remove the notes and their touch targets
+             var val = utilGetSetValue(input);
+             thiz.setSelectionRange(val.length, val.length);
+             d = _fetched[val];
+             dispatch.call('accept', thiz, d, val);
+             hide();
+           } // Dispatches an 'cancel' event
+           // Then hides the combobox.

 
 
 
 

-         function editOff() {
-           if (_notesVisible) {
-             _notesVisible = false;
-             drawLayer.style('display', 'none');
-             drawLayer.selectAll('.note').remove();
-             touchLayer.selectAll('.note').remove();
+           function cancel() {
+             _cancelFetch = true;
+             var thiz = input.node(); // clear (and remove) selection, and replace field contents
+
+             var val = utilGetSetValue(input);
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');
+             val = val.slice(0, start) + val.slice(end);
+             utilGetSetValue(input, val);
+             thiz.setSelectionRange(val.length, val.length);
+             dispatch.call('cancel', thiz);
+             hide();

            }
            }

-         } // Enable the layer.  This shows the notes and transitions them to visible.
+         };

 
 

+         combobox.canAutocomplete = function (val) {
+           if (!arguments.length) return _canAutocomplete;
+           _canAutocomplete = val;
+           return combobox;
+         };

 
 

-         function layerOn() {
-           editOn();
-           drawLayer.style('opacity', 0).transition().duration(250).style('opacity', 1).on('end interrupt', function () {
-             dispatch$1.call('change');
-           });
-         } // Disable the layer.  This transitions the layer invisible and then hides the notes.
+         combobox.caseSensitive = function (val) {
+           if (!arguments.length) return _caseSensitive;
+           _caseSensitive = val;
+           return combobox;
+         };

 
 

+         combobox.data = function (val) {
+           if (!arguments.length) return _data;
+           _data = val;
+           return combobox;
+         };

 
 

-         function layerOff() {
-           throttledRedraw.cancel();
-           drawLayer.interrupt();
-           touchLayer.selectAll('.note').remove();
-           drawLayer.transition().duration(250).style('opacity', 0).on('end interrupt', function () {
-             editOff();
-             dispatch$1.call('change');
-           });
-         } // Update the note markers
+         combobox.fetcher = function (val) {
+           if (!arguments.length) return _fetcher;
+           _fetcher = val;
+           return combobox;
+         };

 
 

+         combobox.minItems = function (val) {
+           if (!arguments.length) return _minItems;
+           _minItems = val;
+           return combobox;
+         };

 
 

-         function updateMarkers() {
-           if (!_notesVisible || !_notesEnabled) return;
-           var service = getService();
-           var selectedID = context.selectedNoteID();
-           var data = service ? service.notes(projection) : [];
-           var getTransform = svgPointTransform(projection); // Draw markers..
+         combobox.itemsMouseEnter = function (val) {
+           if (!arguments.length) return _mouseEnterHandler;
+           _mouseEnterHandler = val;
+           return combobox;
+         };

 
 

-           var notes = drawLayer.selectAll('.note').data(data, function (d) {
-             return d.status + d.id;
-           }); // exit
+         combobox.itemsMouseLeave = function (val) {
+           if (!arguments.length) return _mouseLeaveHandler;
+           _mouseLeaveHandler = val;
+           return combobox;
+         };

 
 

-           notes.exit().remove(); // enter
+         return utilRebind(combobox, dispatch, 'on');
+       }

 
 

-           var notesEnter = notes.enter().append('g').attr('class', function (d) {
-             return 'note note-' + d.id + ' ' + d.status;
-           }).classed('new', function (d) {
-             return d.id < 0;
-           });
-           notesEnter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
-           notesEnter.append('path').call(markerPath, 'shadow');
-           notesEnter.append('use').attr('class', 'note-fill').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').attr('xlink:href', '#iD-icon-note');
-           notesEnter.selectAll('.icon-annotation').data(function (d) {
-             return [d];
-           }).enter().append('use').attr('class', 'icon-annotation').attr('width', '10px').attr('height', '10px').attr('x', '-3px').attr('y', '-19px').attr('xlink:href', function (d) {
-             return '#iD-icon-' + (d.id < 0 ? 'plus' : d.status === 'open' ? 'close' : 'apply');
-           }); // update
+       uiCombobox.off = function (input, context) {
+         input.on('focus.combo-input', null).on('blur.combo-input', null).on('keydown.combo-input', null).on('keyup.combo-input', null).on('input.combo-input', null).on('mousedown.combo-input', null).on('mouseup.combo-input', null);
+         context.container().on('scroll.combo-scroll', null);
+       };

 
 

-           notes.merge(notesEnter).sort(sortY).classed('selected', function (d) {
-             var mode = context.mode();
-             var isMoving = mode && mode.id === 'drag-note'; // no shadows when dragging
+       function uiDisclosure(context, key, expandedDefault) {
+         var dispatch = dispatch$8('toggled');

 
 

-             return !isMoving && d.id === selectedID;
-           }).attr('transform', getTransform); // Draw targets..
+         var _expanded;

 
 

-           if (touchLayer.empty()) return;
-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var targets = touchLayer.selectAll('.note').data(data, function (d) {
-             return d.id;
-           }); // exit
+         var _label = utilFunctor('');

 
 

-           targets.exit().remove(); // enter/update
+         var _updatePreference = true;

 
 

-           targets.enter().append('rect').attr('width', '20px').attr('height', '20px').attr('x', '-8px').attr('y', '-22px').merge(targets).sort(sortY).attr('class', function (d) {
-             var newClass = d.id < 0 ? 'new' : '';
-             return 'note target note-' + d.id + ' ' + fillClass + newClass;
-           }).attr('transform', getTransform);
+         var _content = function _content() {};

 
 

-           function sortY(a, b) {
-             return a.id === selectedID ? 1 : b.id === selectedID ? -1 : b.loc[1] - a.loc[1];
+         var disclosure = function disclosure(selection) {
+           if (_expanded === undefined || _expanded === null) {
+             // loading _expanded here allows it to be reset by calling `disclosure.expanded(null)`
+             var preference = corePreferences('disclosure.' + key + '.expanded');
+             _expanded = preference === null ? !!expandedDefault : preference === 'true';

            }
            }

-         } // Draw the notes layer and schedule loading notes and updating markers.

 
 

+           var hideToggle = selection.selectAll('.hide-toggle-' + key).data([0]); // enter

 
 

-         function drawNotes(selection) {
-           var service = getService();
-           var surface = context.surface();
+           var hideToggleEnter = hideToggle.enter().append('a').attr('href', '#').attr('class', 'hide-toggle hide-toggle-' + key).call(svgIcon('', 'pre-text', 'hide-toggle-icon'));
+           hideToggleEnter.append('span').attr('class', 'hide-toggle-text'); // update

 
 

-           if (surface && !surface.empty()) {
-             touchLayer = surface.selectAll('.data-layer.touch .layer-touch.markers');
-           }
+           hideToggle = hideToggleEnter.merge(hideToggle);
+           hideToggle.on('click', toggle).classed('expanded', _expanded);
+           hideToggle.selectAll('.hide-toggle-text').html(_label());
+           hideToggle.selectAll('.hide-toggle-icon').attr('xlink:href', _expanded ? '#iD-icon-down' : _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward');
+           var wrap = selection.selectAll('.disclosure-wrap').data([0]); // enter/update

 
 

-           drawLayer = selection.selectAll('.layer-notes').data(service ? [0] : []);
-           drawLayer.exit().remove();
-           drawLayer = drawLayer.enter().append('g').attr('class', 'layer-notes').style('display', _notesEnabled ? 'block' : 'none').merge(drawLayer);
+           wrap = wrap.enter().append('div').attr('class', 'disclosure-wrap disclosure-wrap-' + key).merge(wrap).classed('hide', !_expanded);

 
 

-           if (_notesEnabled) {
-             if (service && ~~context.map().zoom() >= minZoom) {
-               editOn();
-               service.loadNotes(projection);
-               updateMarkers();
-             } else {
-               editOff();
-             }
+           if (_expanded) {
+             wrap.call(_content);

            }
            }

-         } // Toggles the layer on and off

 
 

+           function toggle(d3_event) {
+             d3_event.preventDefault();
+             _expanded = !_expanded;

 
 

-         drawNotes.enabled = function (val) {
-           if (!arguments.length) return _notesEnabled;
-           _notesEnabled = val;
+             if (_updatePreference) {
+               corePreferences('disclosure.' + key + '.expanded', _expanded);
+             }

 
 

-           if (_notesEnabled) {
-             layerOn();
-           } else {
-             layerOff();
+             hideToggle.classed('expanded', _expanded);
+             hideToggle.selectAll('.hide-toggle-icon').attr('xlink:href', _expanded ? '#iD-icon-down' : _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward');
+             wrap.call(uiToggle(_expanded));

 
 

-             if (context.selectedNoteID()) {
-               context.enter(modeBrowse(context));
+             if (_expanded) {
+               wrap.call(_content);

              }
              }

-           }

 
 

-           dispatch$1.call('change');
-           return this;
+             dispatch.call('toggled', this, _expanded);
+           }

          };
 
          };
 

-         return drawNotes;
-       }
-
-       function svgTouch() {
-         function drawTouch(selection) {
-           selection.selectAll('.layer-touch').data(['areas', 'lines', 'points', 'turns', 'markers']).enter().append('g').attr('class', function (d) {
-             return 'layer-touch ' + d;
-           });
-         }
+         disclosure.label = function (val) {
+           if (!arguments.length) return _label;
+           _label = utilFunctor(val);
+           return disclosure;
+         };

 
 

-         return drawTouch;
-       }
+         disclosure.expanded = function (val) {
+           if (!arguments.length) return _expanded;
+           _expanded = val;
+           return disclosure;
+         };

 
 

-       function refresh(selection, node) {
-         var cr = node.getBoundingClientRect();
-         var prop = [cr.width, cr.height];
-         selection.property('__dimensions__', prop);
-         return prop;
-       }
+         disclosure.updatePreference = function (val) {
+           if (!arguments.length) return _updatePreference;
+           _updatePreference = val;
+           return disclosure;
+         };

 
 

-       function utilGetDimensions(selection, force) {
-         if (!selection || selection.empty()) {
-           return [0, 0];
-         }
+         disclosure.content = function (val) {
+           if (!arguments.length) return _content;
+           _content = val;
+           return disclosure;
+         };

 
 

-         var node = selection.node(),
-             cached = selection.property('__dimensions__');
-         return !cached || force ? refresh(selection, node) : cached;
+         return utilRebind(disclosure, dispatch, 'on');

        }
        }

-       function utilSetDimensions(selection, dimensions) {
-         if (!selection || selection.empty()) {
-           return selection;
-         }

 
 

-         var node = selection.node();
-
-         if (dimensions === null) {
-           refresh(selection, node);
-           return selection;
-         }
-
-         return selection.property('__dimensions__', [dimensions[0], dimensions[1]]).attr('width', dimensions[0]).attr('height', dimensions[1]);
-       }
+       // Can be labeled and collapsible.

 
 

-       function svgLayers(projection, context) {
-         var dispatch$1 = dispatch('change');
-         var svg = select(null);
-         var _layers = [{
-           id: 'osm',
-           layer: svgOsm(projection, context, dispatch$1)
-         }, {
-           id: 'notes',
-           layer: svgNotes(projection, context, dispatch$1)
-         }, {
-           id: 'data',
-           layer: svgData(projection, context, dispatch$1)
-         }, {
-           id: 'keepRight',
-           layer: svgKeepRight(projection, context, dispatch$1)
-         }, {
-           id: 'improveOSM',
-           layer: svgImproveOSM(projection, context, dispatch$1)
-         }, {
-           id: 'osmose',
-           layer: svgOsmose(projection, context, dispatch$1)
-         }, {
-           id: 'streetside',
-           layer: svgStreetside(projection, context, dispatch$1)
-         }, {
-           id: 'mapillary',
-           layer: svgMapillaryImages(projection, context, dispatch$1)
-         }, {
-           id: 'mapillary-position',
-           layer: svgMapillaryPosition(projection, context)
-         }, {
-           id: 'mapillary-map-features',
-           layer: svgMapillaryMapFeatures(projection, context, dispatch$1)
-         }, {
-           id: 'mapillary-signs',
-           layer: svgMapillarySigns(projection, context, dispatch$1)
-         }, {
-           id: 'openstreetcam',
-           layer: svgOpenstreetcamImages(projection, context, dispatch$1)
-         }, {
-           id: 'debug',
-           layer: svgDebug(projection, context)
-         }, {
-           id: 'geolocate',
-           layer: svgGeolocate(projection)
-         }, {
-           id: 'touch',
-           layer: svgTouch()
-         }];
+       function uiSection(id, context) {
+         var _classes = utilFunctor('');

 
 

-         function drawLayers(selection) {
-           svg = selection.selectAll('.surface').data([0]);
-           svg = svg.enter().append('svg').attr('class', 'surface').merge(svg);
-           var defs = svg.selectAll('.surface-defs').data([0]);
-           defs.enter().append('defs').attr('class', 'surface-defs');
-           var groups = svg.selectAll('.data-layer').data(_layers);
-           groups.exit().remove();
-           groups.enter().append('g').attr('class', function (d) {
-             return 'data-layer ' + d.id;
-           }).merge(groups).each(function (d) {
-             select(this).call(d.layer);
-           });
-         }
+         var _shouldDisplay;

 
 

-         drawLayers.all = function () {
-           return _layers;
-         };
+         var _content;

 
 

-         drawLayers.layer = function (id) {
-           var obj = _layers.find(function (o) {
-             return o.id === id;
-           });
+         var _disclosure;

 
 

-           return obj && obj.layer;
-         };
+         var _label;

 
 

-         drawLayers.only = function (what) {
-           var arr = [].concat(what);
+         var _expandedByDefault = utilFunctor(true);

 
 

-           var all = _layers.map(function (layer) {
-             return layer.id;
-           });
+         var _disclosureContent;

 
 

-           return drawLayers.remove(utilArrayDifference(all, arr));
-         };
+         var _disclosureExpanded;

 
 

-         drawLayers.remove = function (what) {
-           var arr = [].concat(what);
-           arr.forEach(function (id) {
-             _layers = _layers.filter(function (o) {
-               return o.id !== id;
-             });
-           });
-           dispatch$1.call('change');
-           return this;
-         };
+         var _containerSelection = select(null);

 
 

-         drawLayers.add = function (what) {
-           var arr = [].concat(what);
-           arr.forEach(function (obj) {
-             if ('id' in obj && 'layer' in obj) {
-               _layers.push(obj);
-             }
-           });
-           dispatch$1.call('change');
-           return this;
+         var section = {
+           id: id

          };
 
          };
 

-         drawLayers.dimensions = function (val) {
-           if (!arguments.length) return utilGetDimensions(svg);
-           utilSetDimensions(svg, val);
-           return this;
+         section.classes = function (val) {
+           if (!arguments.length) return _classes;
+           _classes = utilFunctor(val);
+           return section;

          };
 
          };
 

-         return utilRebind(drawLayers, dispatch$1, 'on');
-       }
+         section.label = function (val) {
+           if (!arguments.length) return _label;
+           _label = utilFunctor(val);
+           return section;
+         };

 
 

-       function svgLines(projection, context) {
-         var detected = utilDetect();
-         var highway_stack = {
-           motorway: 0,
-           motorway_link: 1,
-           trunk: 2,
-           trunk_link: 3,
-           primary: 4,
-           primary_link: 5,
-           secondary: 6,
-           tertiary: 7,
-           unclassified: 8,
-           residential: 9,
-           service: 10,
-           footway: 11
+         section.expandedByDefault = function (val) {
+           if (!arguments.length) return _expandedByDefault;
+           _expandedByDefault = utilFunctor(val);
+           return section;

          };
 
          };
 

-         function drawTargets(selection, graph, entities, filter) {
-           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
-           var getPath = svgPath(projection).geojson;
-           var activeID = context.activeID();
-           var base = context.history().base(); // The targets and nopes will be MultiLineString sub-segments of the ways
+         section.shouldDisplay = function (val) {
+           if (!arguments.length) return _shouldDisplay;
+           _shouldDisplay = utilFunctor(val);
+           return section;
+         };

 
 

-           var data = {
-             targets: [],
-             nopes: []
-           };
-           entities.forEach(function (way) {
-             var features = svgSegmentWay(way, graph, activeID);
-             data.targets.push.apply(data.targets, features.passive);
-             data.nopes.push.apply(data.nopes, features.active);
-           }); // Targets allow hover and vertex snapping
+         section.content = function (val) {
+           if (!arguments.length) return _content;
+           _content = val;
+           return section;
+         };

 
 

-           var targetData = data.targets.filter(getPath);
-           var targets = selection.selectAll('.line.target-allowed').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(targetData, function key(d) {
-             return d.id;
-           }); // exit
+         section.disclosureContent = function (val) {
+           if (!arguments.length) return _disclosureContent;
+           _disclosureContent = val;
+           return section;
+         };

 
 

-           targets.exit().remove();
+         section.disclosureExpanded = function (val) {
+           if (!arguments.length) return _disclosureExpanded;
+           _disclosureExpanded = val;
+           return section;
+         }; // may be called multiple times

 
 

-           var segmentWasEdited = function segmentWasEdited(d) {
-             var wayID = d.properties.entity.id; // if the whole line was edited, don't draw segment changes

 
 

-             if (!base.entities[wayID] || !fastDeepEqual(graph.entities[wayID].nodes, base.entities[wayID].nodes)) {
-               return false;
-             }
+         section.render = function (selection) {
+           _containerSelection = selection.selectAll('.section-' + id).data([0]);

 
 

-             return d.properties.nodes.some(function (n) {
-               return !base.entities[n.id] || !fastDeepEqual(graph.entities[n.id].loc, base.entities[n.id].loc);
-             });
-           }; // enter/update
+           var sectionEnter = _containerSelection.enter().append('div').attr('class', 'section section-' + id + ' ' + (_classes && _classes() || ''));

 
 

+           _containerSelection = sectionEnter.merge(_containerSelection);

 
 

-           targets.enter().append('path').merge(targets).attr('d', getPath).attr('class', function (d) {
-             return 'way line target target-allowed ' + targetClass + d.id;
-           }).classed('segment-edited', segmentWasEdited); // NOPE
+           _containerSelection.call(renderContent);
+         };

 
 

-           var nopeData = data.nopes.filter(getPath);
-           var nopes = selection.selectAll('.line.target-nope').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(nopeData, function key(d) {
-             return d.id;
-           }); // exit
+         section.reRender = function () {
+           _containerSelection.call(renderContent);
+         };

 
 

-           nopes.exit().remove(); // enter/update
+         section.selection = function () {
+           return _containerSelection;
+         };

 
 

-           nopes.enter().append('path').merge(nopes).attr('d', getPath).attr('class', function (d) {
-             return 'way line target target-nope ' + nopeClass + d.id;
-           }).classed('segment-edited', segmentWasEdited);
-         }
+         section.disclosure = function () {
+           return _disclosure;
+         }; // may be called multiple times

 
 

-         function drawLines(selection, graph, entities, filter) {
-           var base = context.history().base();

 
 

-           function waystack(a, b) {
-             var selected = context.selectedIDs();
-             var scoreA = selected.indexOf(a.id) !== -1 ? 20 : 0;
-             var scoreB = selected.indexOf(b.id) !== -1 ? 20 : 0;
+         function renderContent(selection) {
+           if (_shouldDisplay) {
+             var shouldDisplay = _shouldDisplay();

 
 

-             if (a.tags.highway) {
-               scoreA -= highway_stack[a.tags.highway];
-             }
+             selection.classed('hide', !shouldDisplay);

 
 

-             if (b.tags.highway) {
-               scoreB -= highway_stack[b.tags.highway];
+             if (!shouldDisplay) {
+               selection.html('');
+               return;

              }
              }

-
-             return scoreA - scoreB;

            }
 
            }
 

-           function drawLineGroup(selection, klass, isSelected) {
-             // Note: Don't add `.selected` class in draw modes
-             var mode = context.mode();
-             var isDrawing = mode && /^draw/.test(mode.id);
-             var selectedClass = !isDrawing && isSelected ? 'selected ' : '';
-             var lines = selection.selectAll('path').filter(filter).data(getPathData(isSelected), osmEntity.key);
-             lines.exit().remove(); // Optimization: Call expensive TagClasses only on enter selection. This
-             // works because osmEntity.key is defined to include the entity v attribute.
-
-             lines.enter().append('path').attr('class', function (d) {
-               var prefix = 'way line'; // if this line isn't styled by its own tags
+           if (_disclosureContent) {
+             if (!_disclosure) {
+               _disclosure = uiDisclosure(context, id.replace(/-/g, '_'), _expandedByDefault()).label(_label || '')
+               /*.on('toggled', function(expanded) {
+                   if (expanded) { selection.node().parentNode.scrollTop += 200; }
+               })*/
+               .content(_disclosureContent);
+             }

 
 

-               if (!d.hasInterestingTags()) {
-                 var parentRelations = graph.parentRelations(d);
-                 var parentMultipolygons = parentRelations.filter(function (relation) {
-                   return relation.isMultipolygon();
-                 }); // and if it's a member of at least one multipolygon relation
+             if (_disclosureExpanded !== undefined) {
+               _disclosure.expanded(_disclosureExpanded);

 
 

-                 if (parentMultipolygons.length > 0 && // and only multipolygon relations
-                 parentRelations.length === parentMultipolygons.length) {
-                   // then fudge the classes to style this as an area edge
-                   prefix = 'relation area';
-                 }
-               }
+               _disclosureExpanded = undefined;
+             }

 
 

-               var oldMPClass = oldMultiPolygonOuters[d.id] ? 'old-multipolygon ' : '';
-               return prefix + ' ' + klass + ' ' + selectedClass + oldMPClass + d.id;
-             }).classed('added', function (d) {
-               return !base.entities[d.id];
-             }).classed('geometry-edited', function (d) {
-               return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].nodes, base.entities[d.id].nodes);
-             }).classed('retagged', function (d) {
-               return graph.entities[d.id] && base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
-             }).call(svgTagClasses()).merge(lines).sort(waystack).attr('d', getPath).call(svgTagClasses().tags(svgRelationMemberTags(graph)));
-             return selection;
+             selection.call(_disclosure);
+             return;

            }
 
            }
 

-           function getPathData(isSelected) {
-             return function () {
-               var layer = this.parentNode.__data__;
-               var data = pathdata[layer] || [];
-               return data.filter(function (d) {
-                 if (isSelected) return context.selectedIDs().indexOf(d.id) !== -1;else return context.selectedIDs().indexOf(d.id) === -1;
-               });
-             };
+           if (_content) {
+             selection.call(_content);

            }
            }

+         }

 
 

-           function addMarkers(layergroup, pathclass, groupclass, groupdata, marker) {
-             var markergroup = layergroup.selectAll('g.' + groupclass).data([pathclass]);
-             markergroup = markergroup.enter().append('g').attr('class', groupclass).merge(markergroup);
-             var markers = markergroup.selectAll('path').filter(filter).data(function data() {
-               return groupdata[this.parentNode.__data__] || [];
-             }, function key(d) {
-               return [d.id, d.index];
-             });
-             markers.exit().remove();
-             markers = markers.enter().append('path').attr('class', pathclass).merge(markers).attr('marker-mid', marker).attr('d', function (d) {
-               return d.d;
-             });
+         return section;
+       }

 
 

-             if (detected.ie) {
-               markers.each(function () {
-                 this.parentNode.insertBefore(this, this);
-               });
-             }
-           }
+       // {
+       //   key: 'string',     // required
+       //   value: 'string'    // optional
+       // }
+       //   -or-
+       // {
+       //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
+       // }
+       //

 
 

-           var getPath = svgPath(projection, graph);
-           var ways = [];
-           var onewaydata = {};
-           var sideddata = {};
-           var oldMultiPolygonOuters = {};
+       function uiTagReference(what) {
+         var wikibase = what.qid ? services.wikidata : services.osmWikibase;
+         var tagReference = {};

 
 

-           for (var i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             var outer = osmOldMultipolygonOuterMember(entity, graph);
+         var _button = select(null);

 
 

-             if (outer) {
-               ways.push(entity.mergeTags(outer.tags));
-               oldMultiPolygonOuters[outer.id] = true;
-             } else if (entity.geometry(graph) === 'line') {
-               ways.push(entity);
-             }
-           }
+         var _body = select(null);

 
 

-           ways = ways.filter(getPath);
-           var pathdata = utilArrayGroupBy(ways, function (way) {
-             return way.layer();
-           });
-           Object.keys(pathdata).forEach(function (k) {
-             var v = pathdata[k];
-             var onewayArr = v.filter(function (d) {
-               return d.isOneWay();
-             });
-             var onewaySegments = svgMarkerSegments(projection, graph, 35, function shouldReverse(entity) {
-               return entity.tags.oneway === '-1';
-             }, function bothDirections(entity) {
-               return entity.tags.oneway === 'reversible' || entity.tags.oneway === 'alternating';
-             });
-             onewaydata[k] = utilArrayFlatten(onewayArr.map(onewaySegments));
-             var sidedArr = v.filter(function (d) {
-               return d.isSided();
-             });
-             var sidedSegments = svgMarkerSegments(projection, graph, 30, function shouldReverse() {
-               return false;
-             }, function bothDirections() {
-               return false;
-             });
-             sideddata[k] = utilArrayFlatten(sidedArr.map(sidedSegments));
-           });
-           var covered = selection.selectAll('.layer-osm.covered'); // under areas
+         var _loaded;

 
 

-           var uncovered = selection.selectAll('.layer-osm.lines'); // over areas
+         var _showing;

 
 

-           var touchLayer = selection.selectAll('.layer-touch.lines'); // Draw lines..
+         function load() {
+           if (!wikibase) return;

 
 

-           [covered, uncovered].forEach(function (selection) {
-             var range$1 = selection === covered ? range(-10, 0) : range(0, 11);
-             var layergroup = selection.selectAll('g.layergroup').data(range$1);
-             layergroup = layergroup.enter().append('g').attr('class', function (d) {
-               return 'layergroup layer' + String(d);
-             }).merge(layergroup);
-             layergroup.selectAll('g.linegroup').data(['shadow', 'casing', 'stroke', 'shadow-highlighted', 'casing-highlighted', 'stroke-highlighted']).enter().append('g').attr('class', function (d) {
-               return 'linegroup line-' + d;
-             });
-             layergroup.selectAll('g.line-shadow').call(drawLineGroup, 'shadow', false);
-             layergroup.selectAll('g.line-casing').call(drawLineGroup, 'casing', false);
-             layergroup.selectAll('g.line-stroke').call(drawLineGroup, 'stroke', false);
-             layergroup.selectAll('g.line-shadow-highlighted').call(drawLineGroup, 'shadow', true);
-             layergroup.selectAll('g.line-casing-highlighted').call(drawLineGroup, 'casing', true);
-             layergroup.selectAll('g.line-stroke-highlighted').call(drawLineGroup, 'stroke', true);
-             addMarkers(layergroup, 'oneway', 'onewaygroup', onewaydata, 'url(#ideditor-oneway-marker)');
-             addMarkers(layergroup, 'sided', 'sidedgroup', sideddata, function marker(d) {
-               var category = graph.entity(d.id).sidednessIdentifier();
-               return 'url(#ideditor-sided-marker-' + category + ')';
-             });
-           }); // Draw touch targets..
+           _button.classed('tag-reference-loading', true);

 
 

-           touchLayer.call(drawTargets, graph, ways, filter);
+           wikibase.getDocs(what, gotDocs);

          }
 
          }
 

-         return drawLines;
-       }
+         function gotDocs(err, docs) {
+           _body.html('');

 
 

-       function svgMidpoints(projection, context) {
-         var targetRadius = 8;
+           if (!docs || !docs.title) {
+             _body.append('p').attr('class', 'tag-reference-description').html(_t.html('inspector.no_documentation_key'));

 
 

-         function drawTargets(selection, graph, entities, filter) {
-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var getTransform = svgPointTransform(projection).geojson;
-           var data = entities.map(function (midpoint) {
-             return {
-               type: 'Feature',
-               id: midpoint.id,
-               properties: {
-                 target: true,
-                 entity: midpoint
-               },
-               geometry: {
-                 type: 'Point',
-                 coordinates: midpoint.loc
-               }
-             };
-           });
-           var targets = selection.selectAll('.midpoint.target').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(data, function key(d) {
-             return d.id;
-           }); // exit
+             done();
+             return;
+           }

 
 

-           targets.exit().remove(); // enter/update
+           if (docs.imageURL) {
+             _body.append('img').attr('class', 'tag-reference-wiki-image').attr('src', docs.imageURL).on('load', function () {
+               done();
+             }).on('error', function () {
+               select(this).remove();
+               done();
+             });
+           } else {
+             done();
+           }

 
 

-           targets.enter().append('circle').attr('r', targetRadius).merge(targets).attr('class', function (d) {
-             return 'node midpoint target ' + fillClass + d.id;
-           }).attr('transform', getTransform);
-         }
+           _body.append('p').attr('class', 'tag-reference-description').html(docs.description ? _mainLocalizer.htmlForLocalizedText(docs.description, docs.descriptionLocaleCode) : _t.html('inspector.no_documentation_key')).append('a').attr('class', 'tag-reference-edit').attr('target', '_blank').attr('title', _t('inspector.edit_reference')).attr('href', docs.editURL).call(svgIcon('#iD-icon-edit', 'inline'));

 
 

-         function drawMidpoints(selection, graph, entities, filter, extent) {
-           var drawLayer = selection.selectAll('.layer-osm.points .points-group.midpoints');
-           var touchLayer = selection.selectAll('.layer-touch.points');
-           var mode = context.mode();
+           if (docs.wiki) {
+             _body.append('a').attr('class', 'tag-reference-link').attr('target', '_blank').attr('href', docs.wiki.url).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html(docs.wiki.text));
+           } // Add link to info about "good changeset comments" - #2923

 
 

-           if (mode && mode.id !== 'select' || !context.map().withinEditableZoom()) {
-             drawLayer.selectAll('.midpoint').remove();
-             touchLayer.selectAll('.midpoint.target').remove();
-             return;
-           }

 
 

-           var poly = extent.polygon();
-           var midpoints = {};
+           if (what.key === 'comment') {
+             _body.append('a').attr('class', 'tag-reference-comment-link').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', _t('commit.about_changeset_comments_link')).append('span').html(_t.html('commit.about_changeset_comments'));
+           }
+         }

 
 

-           for (var i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             if (entity.type !== 'way') continue;
-             if (!filter(entity)) continue;
-             if (context.selectedIDs().indexOf(entity.id) < 0) continue;
-             var nodes = graph.childNodes(entity);
+         function done() {
+           _loaded = true;

 
 

-             for (var j = 0; j < nodes.length - 1; j++) {
-               var a = nodes[j];
-               var b = nodes[j + 1];
-               var id = [a.id, b.id].sort().join('-');
+           _button.classed('tag-reference-loading', false);

 
 

-               if (midpoints[id]) {
-                 midpoints[id].parents.push(entity);
-               } else if (geoVecLength(projection(a.loc), projection(b.loc)) > 40) {
-                 var point = geoVecInterp(a.loc, b.loc, 0.5);
-                 var loc = null;
+           _body.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1');

 
 

-                 if (extent.intersects(point)) {
-                   loc = point;
-                 } else {
-                   for (var k = 0; k < 4; k++) {
-                     point = geoLineIntersection([a.loc, b.loc], [poly[k], poly[k + 1]]);
+           _showing = true;

 
 

-                     if (point && geoVecLength(projection(a.loc), projection(point)) > 20 && geoVecLength(projection(b.loc), projection(point)) > 20) {
-                       loc = point;
-                       break;
-                     }
-                   }
-                 }
+           _button.selectAll('svg.icon use').each(function () {
+             var iconUse = select(this);

 
 

-                 if (loc) {
-                   midpoints[id] = {
-                     type: 'midpoint',
-                     id: id,
-                     loc: loc,
-                     edge: [a.id, b.id],
-                     parents: [entity]
-                   };
-                 }
-               }
+             if (iconUse.attr('href') === '#iD-icon-info') {
+               iconUse.attr('href', '#iD-icon-info-filled');

              }
              }

-           }
+           });
+         }

 
 

-           function midpointFilter(d) {
-             if (midpoints[d.id]) return true;
+         function hide() {
+           _body.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
+             _body.classed('expanded', false);
+           });

 
 

-             for (var i = 0; i < d.parents.length; i++) {
-               if (filter(d.parents[i])) {
-                 return true;
-               }
+           _showing = false;
+
+           _button.selectAll('svg.icon use').each(function () {
+             var iconUse = select(this);
+
+             if (iconUse.attr('href') === '#iD-icon-info-filled') {
+               iconUse.attr('href', '#iD-icon-info');

              }
              }

+           });
+         }

 
 

-             return false;
-           }
+         tagReference.button = function (selection, klass, iconName) {
+           _button = selection.selectAll('.tag-reference-button').data([0]);
+           _button = _button.enter().append('button').attr('class', 'tag-reference-button ' + (klass || '')).attr('title', _t('icons.information')).call(svgIcon('#iD-icon-' + (iconName || 'inspect'))).merge(_button);

 
 

-           var groups = drawLayer.selectAll('.midpoint').filter(midpointFilter).data(Object.values(midpoints), function (d) {
-             return d.id;
+           _button.on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             this.blur(); // avoid keeping focus on the button - #4641
+
+             if (_showing) {
+               hide();
+             } else if (_loaded) {
+               done();
+             } else {
+               load();
+             }

            });
            });

-           groups.exit().remove();
-           var enter = groups.enter().insert('g', ':first-child').attr('class', 'midpoint');
-           enter.append('polygon').attr('points', '-6,8 10,0 -6,-8').attr('class', 'shadow');
-           enter.append('polygon').attr('points', '-3,4 5,0 -3,-4').attr('class', 'fill');
-           groups = groups.merge(enter).attr('transform', function (d) {
-             var translate = svgPointTransform(projection);
-             var a = graph.entity(d.edge[0]);
-             var b = graph.entity(d.edge[1]);
-             var angle = geoAngle(a, b, projection) * (180 / Math.PI);
-             return translate(d) + ' rotate(' + angle + ')';
-           }).call(svgTagClasses().tags(function (d) {
-             return d.parents[0].tags;
-           })); // Propagate data bindings.
+         };

 
 

-           groups.select('polygon.shadow');
-           groups.select('polygon.fill'); // Draw touch targets..
+         tagReference.body = function (selection) {
+           var itemID = what.qid || what.key + '-' + (what.value || '');
+           _body = selection.selectAll('.tag-reference-body').data([itemID], function (d) {
+             return d;
+           });

 
 

-           touchLayer.call(drawTargets, graph, Object.values(midpoints), midpointFilter);
-         }
+           _body.exit().remove();

 
 

-         return drawMidpoints;
-       }
+           _body = _body.enter().append('div').attr('class', 'tag-reference-body').style('max-height', '0').style('opacity', '0').merge(_body);

 
 

-       function svgPoints(projection, context) {
-         function markerPath(selection, klass) {
-           selection.attr('class', klass).attr('transform', 'translate(-8, -23)').attr('d', 'M 17,8 C 17,13 11,21 8.5,23.5 C 6,21 0,13 0,8 C 0,4 4,-0.5 8.5,-0.5 C 13,-0.5 17,4 17,8 z');
-         }
+           if (_showing === false) {
+             hide();
+           }
+         };

 
 

-         function sortY(a, b) {
-           return b.loc[1] - a.loc[1];
-         } // Avoid exit/enter if we're just moving stuff around.
-         // The node will get a new version but we only need to run the update selection.
+         tagReference.showing = function (val) {
+           if (!arguments.length) return _showing;
+           _showing = val;
+           return tagReference;
+         };
+
+         return tagReference;
+       }
+
+       function uiSectionRawTagEditor(id, context) {
+         var section = uiSection(id, context).classes('raw-tag-editor').label(function () {
+           var count = Object.keys(_tags).filter(function (d) {
+             return d;
+           }).length;
+           return _t('inspector.title_count', {
+             title: _t.html('inspector.tags'),
+             count: count
+           });
+         }).expandedByDefault(false).disclosureContent(renderDisclosureContent);
+         var taginfo = services.taginfo;
+         var dispatch = dispatch$8('change');
+         var availableViews = [{
+           id: 'list',
+           icon: '#fas-th-list'
+         }, {
+           id: 'text',
+           icon: '#fas-i-cursor'
+         }];

 
 

+         var _tagView = corePreferences('raw-tag-editor-view') || 'list'; // 'list, 'text'

 
 

-         function fastEntityKey(d) {
-           var mode = context.mode();
-           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
-           return isMoving ? d.id : osmEntity.key(d);
-         }

 
 

-         function drawTargets(selection, graph, entities, filter) {
-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var getTransform = svgPointTransform(projection).geojson;
-           var activeID = context.activeID();
-           var data = [];
-           entities.forEach(function (node) {
-             if (activeID === node.id) return; // draw no target on the activeID
+         var _readOnlyTags = []; // the keys in the order we want them to display

 
 

-             data.push({
-               type: 'Feature',
-               id: node.id,
-               properties: {
-                 target: true,
-                 entity: node
-               },
-               geometry: node.asGeoJSON()
-             });
-           });
-           var targets = selection.selectAll('.point.target').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(data, function key(d) {
-             return d.id;
-           }); // exit
+         var _orderedKeys = [];
+         var _showBlank = false;
+         var _pendingChange = null;

 
 

-           targets.exit().remove(); // enter/update
+         var _state;

 
 

-           targets.enter().append('rect').attr('x', -10).attr('y', -26).attr('width', 20).attr('height', 30).merge(targets).attr('class', function (d) {
-             return 'node point target ' + fillClass + d.id;
-           }).attr('transform', getTransform);
-         }
+         var _presets;

 
 

-         function drawPoints(selection, graph, entities, filter) {
-           var wireframe = context.surface().classed('fill-wireframe');
-           var zoom = geoScaleToZoom(projection.scale());
-           var base = context.history().base(); // Points with a direction will render as vertices at higher zooms..
+         var _tags;

 
 

-           function renderAsPoint(entity) {
-             return entity.geometry(graph) === 'point' && !(zoom >= 18 && entity.directions(graph, projection).length);
-           } // All points will render as vertices in wireframe mode too..
+         var _entityIDs;

 
 

+         var _didInteract = false;

 
 

-           var points = wireframe ? [] : entities.filter(renderAsPoint);
-           points.sort(sortY);
-           var drawLayer = selection.selectAll('.layer-osm.points .points-group.points');
-           var touchLayer = selection.selectAll('.layer-touch.points'); // Draw points..
+         function interacted() {
+           _didInteract = true;
+         }

 
 

-           var groups = drawLayer.selectAll('g.point').filter(filter).data(points, fastEntityKey);
-           groups.exit().remove();
-           var enter = groups.enter().append('g').attr('class', function (d) {
-             return 'node point ' + d.id;
-           }).order();
-           enter.append('path').call(markerPath, 'shadow');
-           enter.append('ellipse').attr('cx', 0.5).attr('cy', 1).attr('rx', 6.5).attr('ry', 3).attr('class', 'stroke');
-           enter.append('path').call(markerPath, 'stroke');
-           enter.append('use').attr('transform', 'translate(-5, -19)').attr('class', 'icon').attr('width', '11px').attr('height', '11px');
-           groups = groups.merge(enter).attr('transform', svgPointTransform(projection)).classed('added', function (d) {
-             return !base.entities[d.id]; // if it doesn't exist in the base graph, it's new
-           }).classed('moved', function (d) {
-             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].loc, base.entities[d.id].loc);
-           }).classed('retagged', function (d) {
-             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
-           }).call(svgTagClasses());
-           groups.select('.shadow'); // propagate bound data
+         function renderDisclosureContent(wrap) {
+           // remove deleted keys
+           _orderedKeys = _orderedKeys.filter(function (key) {
+             return _tags[key] !== undefined;
+           }); // When switching to a different entity or changing the state (hover/select)
+           // reorder the keys alphabetically.
+           // We trigger this by emptying the `_orderedKeys` array, then it will be rebuilt here.
+           // Otherwise leave their order alone - #5857, #5927

 
 

-           groups.select('.stroke'); // propagate bound data
+           var all = Object.keys(_tags).sort();
+           var missingKeys = utilArrayDifference(all, _orderedKeys);

 
 

-           groups.select('.icon') // propagate bound data
-           .attr('xlink:href', function (entity) {
-             var preset = _mainPresetIndex.match(entity, graph);
-             var picon = preset && preset.icon;
+           for (var i in missingKeys) {
+             _orderedKeys.push(missingKeys[i]);
+           } // assemble row data

 
 

-             if (!picon) {
-               return '';
-             } else {
-               var isMaki = /^maki-/.test(picon);
-               return '#' + picon + (isMaki ? '-11' : '');
-             }
-           }); // Draw touch targets..

 
 

-           touchLayer.call(drawTargets, graph, points, filter);
-         }
+           var rowData = _orderedKeys.map(function (key, i) {
+             return {
+               index: i,
+               key: key,
+               value: _tags[key]
+             };
+           }); // append blank row last, if necessary

 
 

-         return drawPoints;
-       }

 
 

-       function svgTurns(projection, context) {
-         function icon(turn) {
-           var u = turn.u ? '-u' : '';
-           if (turn.no) return '#iD-turn-no' + u;
-           if (turn.only) return '#iD-turn-only' + u;
-           return '#iD-turn-yes' + u;
-         }
+           if (!rowData.length || _showBlank) {
+             _showBlank = false;
+             rowData.push({
+               index: rowData.length,
+               key: '',
+               value: ''
+             });
+           } // View Options

 
 

-         function drawTurns(selection, graph, turns) {
-           function turnTransform(d) {
-             var pxRadius = 50;
-             var toWay = graph.entity(d.to.way);
-             var toPoints = graph.childNodes(toWay).map(function (n) {
-               return n.loc;
-             }).map(projection);
-             var toLength = geoPathLength(toPoints);
-             var mid = toLength / 2; // midpoint of destination way

 
 

-             var toNode = graph.entity(d.to.node);
-             var toVertex = graph.entity(d.to.vertex);
-             var a = geoAngle(toVertex, toNode, projection);
-             var o = projection(toVertex.loc);
-             var r = d.u ? 0 // u-turn: no radius
-             : !toWay.__via ? pxRadius // leaf way: put marker at pxRadius
-             : Math.min(mid, pxRadius); // via way: prefer pxRadius, fallback to mid for very short ways
+           var options = wrap.selectAll('.raw-tag-options').data([0]);
+           options.exit().remove();
+           var optionsEnter = options.enter().insert('div', ':first-child').attr('class', 'raw-tag-options');
+           var optionEnter = optionsEnter.selectAll('.raw-tag-option').data(availableViews, function (d) {
+             return d.id;
+           }).enter();
+           optionEnter.append('button').attr('class', function (d) {
+             return 'raw-tag-option raw-tag-option-' + d.id + (_tagView === d.id ? ' selected' : '');
+           }).attr('title', function (d) {
+             return _t('icons.' + d.id);
+           }).on('click', function (d3_event, d) {
+             _tagView = d.id;
+             corePreferences('raw-tag-editor-view', d.id);
+             wrap.selectAll('.raw-tag-option').classed('selected', function (datum) {
+               return datum === d;
+             });
+             wrap.selectAll('.tag-text').classed('hide', d.id !== 'text').each(setTextareaHeight);
+             wrap.selectAll('.tag-list, .add-row').classed('hide', d.id !== 'list');
+           }).each(function (d) {
+             select(this).call(svgIcon(d.icon));
+           }); // View as Text

 
 

-             return 'translate(' + (r * Math.cos(a) + o[0]) + ',' + (r * Math.sin(a) + o[1]) + ') ' + 'rotate(' + a * 180 / Math.PI + ')';
-           }
+           var textData = rowsToText(rowData);
+           var textarea = wrap.selectAll('.tag-text').data([0]);
+           textarea = textarea.enter().append('textarea').attr('class', 'tag-text' + (_tagView !== 'text' ? ' hide' : '')).call(utilNoAuto).attr('placeholder', _t('inspector.key_value')).attr('spellcheck', 'false').merge(textarea);
+           textarea.call(utilGetSetValue, textData).each(setTextareaHeight).on('input', setTextareaHeight).on('focus', interacted).on('blur', textChanged).on('change', textChanged); // View as List

 
 

-           var drawLayer = selection.selectAll('.layer-osm.points .points-group.turns');
-           var touchLayer = selection.selectAll('.layer-touch.turns'); // Draw turns..
+           var list = wrap.selectAll('.tag-list').data([0]);
+           list = list.enter().append('ul').attr('class', 'tag-list' + (_tagView !== 'list' ? ' hide' : '')).merge(list); // Container for the Add button

 
 

-           var groups = drawLayer.selectAll('g.turn').data(turns, function (d) {
-             return d.key;
-           }); // exit
+           var addRowEnter = wrap.selectAll('.add-row').data([0]).enter().append('div').attr('class', 'add-row' + (_tagView !== 'list' ? ' hide' : ''));
+           addRowEnter.append('button').attr('class', 'add-tag').call(svgIcon('#iD-icon-plus', 'light')).on('click', addTag);
+           addRowEnter.append('div').attr('class', 'space-value'); // preserve space

 
 

-           groups.exit().remove(); // enter
+           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
+           // Tag list items

 
 

-           var groupsEnter = groups.enter().append('g').attr('class', function (d) {
-             return 'turn ' + d.key;
-           });
-           var turnsEnter = groupsEnter.filter(function (d) {
-             return !d.u;
+           var items = list.selectAll('.tag-row').data(rowData, function (d) {
+             return d.key;

            });
            });

-           turnsEnter.append('rect').attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
-           turnsEnter.append('use').attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
-           var uEnter = groupsEnter.filter(function (d) {
-             return d.u;
+           items.exit().each(unbind).remove(); // Enter
+
+           var itemsEnter = items.enter().append('li').attr('class', 'tag-row').classed('readonly', isReadOnly);
+           var innerWrap = itemsEnter.append('div').attr('class', 'inner-wrap');
+           innerWrap.append('div').attr('class', 'key-wrap').append('input').property('type', 'text').attr('class', 'key').call(utilNoAuto).on('focus', interacted).on('blur', keyChange).on('change', keyChange);
+           innerWrap.append('div').attr('class', 'value-wrap').append('input').property('type', 'text').attr('class', 'value').call(utilNoAuto).on('focus', interacted).on('blur', valueChange).on('change', valueChange).on('keydown.push-more', pushMore);
+           innerWrap.append('button').attr('class', 'form-field-button remove').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete')); // Update
+
+           items = items.merge(itemsEnter).sort(function (a, b) {
+             return a.index - b.index;

            });
            });

-           uEnter.append('circle').attr('r', '16');
-           uEnter.append('use').attr('transform', 'translate(-16, -16)').attr('width', '32').attr('height', '32'); // update
+           items.each(function (d) {
+             var row = select(this);
+             var key = row.select('input.key'); // propagate bound data

 
 

-           groups = groups.merge(groupsEnter).attr('opacity', function (d) {
-             return d.direct === false ? '0.7' : null;
-           }).attr('transform', turnTransform);
-           groups.select('use').attr('xlink:href', icon);
-           groups.select('rect'); // propagate bound data
+             var value = row.select('input.value'); // propagate bound data

 
 

-           groups.select('circle'); // propagate bound data
-           // Draw touch targets..
+             if (_entityIDs && taginfo && _state !== 'hover') {
+               bindTypeahead(key, value);
+             }

 
 

-           var fillClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           groups = touchLayer.selectAll('g.turn').data(turns, function (d) {
-             return d.key;
-           }); // exit
+             var referenceOptions = {
+               key: d.key
+             };

 
 

-           groups.exit().remove(); // enter
+             if (typeof d.value === 'string') {
+               referenceOptions.value = d.value;
+             }

 
 

-           groupsEnter = groups.enter().append('g').attr('class', function (d) {
-             return 'turn ' + d.key;
+             var reference = uiTagReference(referenceOptions);
+
+             if (_state === 'hover') {
+               reference.showing(false);
+             }
+
+             row.select('.inner-wrap') // propagate bound data
+             .call(reference.button);
+             row.call(reference.body);
+             row.select('button.remove'); // propagate bound data

            });
            });

-           turnsEnter = groupsEnter.filter(function (d) {
-             return !d.u;
+           items.selectAll('input.key').attr('title', function (d) {
+             return d.key;
+           }).call(utilGetSetValue, function (d) {
+             return d.key;
+           }).attr('readonly', function (d) {
+             return isReadOnly(d) || typeof d.value !== 'string' || null;

            });
            });

-           turnsEnter.append('rect').attr('class', 'target ' + fillClass).attr('transform', 'translate(-22, -12)').attr('width', '44').attr('height', '24');
-           uEnter = groupsEnter.filter(function (d) {
-             return d.u;
+           items.selectAll('input.value').attr('title', function (d) {
+             return Array.isArray(d.value) ? d.value.filter(Boolean).join('\n') : d.value;
+           }).classed('mixed', function (d) {
+             return Array.isArray(d.value);
+           }).attr('placeholder', function (d) {
+             return typeof d.value === 'string' ? null : _t('inspector.multiple_values');
+           }).call(utilGetSetValue, function (d) {
+             return typeof d.value === 'string' ? d.value : '';
+           }).attr('readonly', function (d) {
+             return isReadOnly(d) || null;

            });
            });

-           uEnter.append('circle').attr('class', 'target ' + fillClass).attr('r', '16'); // update
+           items.selectAll('button.remove').on(('PointerEvent' in window ? 'pointer' : 'mouse') + 'down', removeTag); // 'click' fires too late - #5878
+         }

 
 

-           groups = groups.merge(groupsEnter).attr('transform', turnTransform);
-           groups.select('rect'); // propagate bound data
+         function isReadOnly(d) {
+           for (var i = 0; i < _readOnlyTags.length; i++) {
+             if (d.key.match(_readOnlyTags[i]) !== null) {
+               return true;
+             }
+           }

 
 

-           groups.select('circle'); // propagate bound data
+           return false;
+         }

 
 

-           return this;
+         function setTextareaHeight() {
+           if (_tagView !== 'text') return;
+           var selection = select(this);
+           var matches = selection.node().value.match(/\n/g);
+           var lineCount = 2 + Number(matches && matches.length);
+           var lineHeight = 20;
+           selection.style('height', lineCount * lineHeight + 'px');

          }
 
          }
 

-         return drawTurns;
-       }
+         function stringify(s) {
+           return JSON.stringify(s).slice(1, -1); // without leading/trailing "
+         }

 
 

-       function svgVertices(projection, context) {
-         var radiuses = {
-           //       z16-, z17,   z18+,  w/icon
-           shadow: [6, 7.5, 7.5, 12],
-           stroke: [2.5, 3.5, 3.5, 8],
-           fill: [1, 1.5, 1.5, 1.5]
-         };
+         function unstringify(s) {
+           var leading = '';
+           var trailing = '';

 
 

-         var _currHoverTarget;
+           if (s.length < 1 || s.charAt(0) !== '"') {
+             leading = '"';
+           }

 
 

-         var _currPersistent = {};
-         var _currHover = {};
-         var _prevHover = {};
-         var _currSelected = {};
-         var _prevSelected = {};
-         var _radii = {};
+           if (s.length < 2 || s.charAt(s.length - 1) !== '"' || s.charAt(s.length - 1) === '"' && s.charAt(s.length - 2) === '\\') {
+             trailing = '"';
+           }

 
 

-         function sortY(a, b) {
-           return b.loc[1] - a.loc[1];
-         } // Avoid exit/enter if we're just moving stuff around.
-         // The node will get a new version but we only need to run the update selection.
+           return JSON.parse(leading + s + trailing);
+         }
+
+         function rowsToText(rows) {
+           var str = rows.filter(function (row) {
+             return row.key && row.key.trim() !== '';
+           }).map(function (row) {
+             var rawVal = row.value;
+             if (typeof rawVal !== 'string') rawVal = '*';
+             var val = rawVal ? stringify(rawVal) : '';
+             return stringify(row.key) + '=' + val;
+           }).join('\n');

 
 

+           if (_state !== 'hover' && str.length) {
+             return str + '\n';
+           }

 
 

-         function fastEntityKey(d) {
-           var mode = context.mode();
-           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
-           return isMoving ? d.id : osmEntity.key(d);
+           return str;

          }
 
          }
 

-         function draw(selection, graph, vertices, sets, filter) {
-           sets = sets || {
-             selected: {},
-             important: {},
-             hovered: {}
-           };
-           var icons = {};
-           var directions = {};
-           var wireframe = context.surface().classed('fill-wireframe');
-           var zoom = geoScaleToZoom(projection.scale());
-           var z = zoom < 17 ? 0 : zoom < 18 ? 1 : 2;
-           var activeID = context.activeID();
-           var base = context.history().base();
-
-           function getIcon(d) {
-             // always check latest entity, as fastEntityKey avoids enter/exit now
-             var entity = graph.entity(d.id);
-             if (entity.id in icons) return icons[entity.id];
-             icons[entity.id] = entity.hasInterestingTags() && _mainPresetIndex.match(entity, graph).icon;
-             return icons[entity.id];
-           } // memoize directions results, return false for empty arrays (for use in filter)
+         function textChanged() {
+           var newText = this.value.trim();
+           var newTags = {};
+           newText.split('\n').forEach(function (row) {
+             var m = row.match(/^\s*([^=]+)=(.*)$/);

 
 

+             if (m !== null) {
+               var k = context.cleanTagKey(unstringify(m[1].trim()));
+               var v = context.cleanTagValue(unstringify(m[2].trim()));
+               newTags[k] = v;
+             }
+           });
+           var tagDiff = utilTagDiff(_tags, newTags);
+           if (!tagDiff.length) return;
+           _pendingChange = _pendingChange || {};
+           tagDiff.forEach(function (change) {
+             if (isReadOnly({
+               key: change.key
+             })) return; // skip unchanged multiselection placeholders

 
 

-           function getDirections(entity) {
-             if (entity.id in directions) return directions[entity.id];
-             var angles = entity.directions(graph, projection);
-             directions[entity.id] = angles.length ? angles : false;
-             return angles;
-           }
+             if (change.newVal === '*' && typeof change.oldVal !== 'string') return;

 
 

-           function updateAttributes(selection) {
-             ['shadow', 'stroke', 'fill'].forEach(function (klass) {
-               var rads = radiuses[klass];
-               selection.selectAll('.' + klass).each(function (entity) {
-                 var i = z && getIcon(entity);
-                 var r = rads[i ? 3 : z]; // slightly increase the size of unconnected endpoints #3775
+             if (change.type === '-') {
+               _pendingChange[change.key] = undefined;
+             } else if (change.type === '+') {
+               _pendingChange[change.key] = change.newVal || '';
+             }
+           });

 
 

-                 if (entity.id !== activeID && entity.isEndpoint(graph) && !entity.isConnected(graph)) {
-                   r += 1.5;
-                 }
+           if (Object.keys(_pendingChange).length === 0) {
+             _pendingChange = null;
+             return;
+           }

 
 

-                 if (klass === 'shadow') {
-                   // remember this value, so we don't need to
-                   _radii[entity.id] = r; // recompute it when we draw the touch targets
-                 }
+           scheduleChange();
+         }

 
 

-                 select(this).attr('r', r).attr('visibility', i && klass === 'fill' ? 'hidden' : null);
-               });
-             });
+         function pushMore(d3_event) {
+           // if pressing Tab on the last value field with content, add a blank row
+           if (d3_event.keyCode === 9 && !d3_event.shiftKey && section.selection().selectAll('.tag-list li:last-child input.value').node() === this && utilGetSetValue(select(this))) {
+             addTag();

            }
            }

+         }

 
 

-           vertices.sort(sortY);
-           var groups = selection.selectAll('g.vertex').filter(filter).data(vertices, fastEntityKey); // exit
+         function bindTypeahead(key, value) {
+           if (isReadOnly(key.datum())) return;

 
 

-           groups.exit().remove(); // enter
+           if (Array.isArray(value.datum().value)) {
+             value.call(uiCombobox(context, 'tag-value').minItems(1).fetcher(function (value, callback) {
+               var keyString = utilGetSetValue(key);
+               if (!_tags[keyString]) return;

 
 

-           var enter = groups.enter().append('g').attr('class', function (d) {
-             return 'node vertex ' + d.id;
-           }).order();
-           enter.append('circle').attr('class', 'shadow');
-           enter.append('circle').attr('class', 'stroke'); // Vertices with tags get a fill.
+               var data = _tags[keyString].filter(Boolean).map(function (tagValue) {
+                 return {
+                   value: tagValue,
+                   title: tagValue
+                 };
+               });

 
 

-           enter.filter(function (d) {
-             return d.hasInterestingTags();
-           }).append('circle').attr('class', 'fill'); // update
+               callback(data);
+             }));
+             return;
+           }

 
 

-           groups = groups.merge(enter).attr('transform', svgPointTransform(projection)).classed('sibling', function (d) {
-             return d.id in sets.selected;
-           }).classed('shared', function (d) {
-             return graph.isShared(d);
-           }).classed('endpoint', function (d) {
-             return d.isEndpoint(graph);
-           }).classed('added', function (d) {
-             return !base.entities[d.id]; // if it doesn't exist in the base graph, it's new
-           }).classed('moved', function (d) {
-             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].loc, base.entities[d.id].loc);
-           }).classed('retagged', function (d) {
-             return base.entities[d.id] && !fastDeepEqual(graph.entities[d.id].tags, base.entities[d.id].tags);
-           }).call(updateAttributes); // Vertices with icons get a `use`.
+           var geometry = context.graph().geometry(_entityIDs[0]);
+           key.call(uiCombobox(context, 'tag-key').fetcher(function (value, callback) {
+             taginfo.keys({
+               debounce: true,
+               geometry: geometry,
+               query: value
+             }, function (err, data) {
+               if (!err) {
+                 var filtered = data.filter(function (d) {
+                   return _tags[d.value] === undefined;
+                 });
+                 callback(sort(value, filtered));
+               }
+             });
+           }));
+           value.call(uiCombobox(context, 'tag-value').fetcher(function (value, callback) {
+             taginfo.values({
+               debounce: true,
+               key: utilGetSetValue(key),
+               geometry: geometry,
+               query: value
+             }, function (err, data) {
+               if (!err) callback(sort(value, data));
+             });
+           }));

 
 

-           var iconUse = groups.selectAll('.icon').data(function data(d) {
-             return zoom >= 17 && getIcon(d) ? [d] : [];
-           }, fastEntityKey); // exit
+           function sort(value, data) {
+             var sameletter = [];
+             var other = [];

 
 

-           iconUse.exit().remove(); // enter
+             for (var i = 0; i < data.length; i++) {
+               if (data[i].value.substring(0, value.length) === value) {
+                 sameletter.push(data[i]);
+               } else {
+                 other.push(data[i]);
+               }
+             }

 
 

-           iconUse.enter().append('use').attr('class', 'icon').attr('width', '11px').attr('height', '11px').attr('transform', 'translate(-5.5, -5.5)').attr('xlink:href', function (d) {
-             var picon = getIcon(d);
-             var isMaki = /^maki-/.test(picon);
-             return '#' + picon + (isMaki ? '-11' : '');
-           }); // Vertices with directions get viewfields
+             return sameletter.concat(other);
+           }
+         }

 
 

-           var dgroups = groups.selectAll('.viewfieldgroup').data(function data(d) {
-             return zoom >= 18 && getDirections(d) ? [d] : [];
-           }, fastEntityKey); // exit
+         function unbind() {
+           var row = select(this);
+           row.selectAll('input.key').call(uiCombobox.off, context);
+           row.selectAll('input.value').call(uiCombobox.off, context);
+         }
+
+         function keyChange(d3_event, d) {
+           if (select(this).attr('readonly')) return;
+           var kOld = d.key; // exit if we are currently about to delete this row anyway - #6366

 
 

-           dgroups.exit().remove(); // enter/update
+           if (_pendingChange && _pendingChange.hasOwnProperty(kOld) && _pendingChange[kOld] === undefined) return;
+           var kNew = context.cleanTagKey(this.value.trim()); // allow no change if the key should be readonly

 
 

-           dgroups = dgroups.enter().insert('g', '.shadow').attr('class', 'viewfieldgroup').merge(dgroups);
-           var viewfields = dgroups.selectAll('.viewfield').data(getDirections, function key(d) {
-             return osmEntity.key(d);
-           }); // exit
+           if (isReadOnly({
+             key: kNew
+           })) {
+             this.value = kOld;
+             return;
+           }

 
 

-           viewfields.exit().remove(); // enter/update
+           if (kNew && kNew !== kOld && _tags[kNew] !== undefined) {
+             // new key is already in use, switch focus to the existing row
+             this.value = kOld; // reset the key

 
 

-           viewfields.enter().append('path').attr('class', 'viewfield').attr('d', 'M0,0H0').merge(viewfields).attr('marker-start', 'url(#ideditor-viewfield-marker' + (wireframe ? '-wireframe' : '') + ')').attr('transform', function (d) {
-             return 'rotate(' + d + ')';
-           });
-         }
+             section.selection().selectAll('.tag-list input.value').each(function (d) {
+               if (d.key === kNew) {
+                 // send focus to that other value combo instead
+                 var input = select(this).node();
+                 input.focus();
+                 input.select();
+               }
+             });
+             return;
+           }

 
 

-         function drawTargets(selection, graph, entities, filter) {
-           var targetClass = context.getDebug('target') ? 'pink ' : 'nocolor ';
-           var nopeClass = context.getDebug('target') ? 'red ' : 'nocolor ';
-           var getTransform = svgPointTransform(projection).geojson;
-           var activeID = context.activeID();
-           var data = {
-             targets: [],
-             nopes: []
-           };
-           entities.forEach(function (node) {
-             if (activeID === node.id) return; // draw no target on the activeID
+           var row = this.parentNode.parentNode;
+           var inputVal = select(row).selectAll('input.value');
+           var vNew = context.cleanTagValue(utilGetSetValue(inputVal));
+           _pendingChange = _pendingChange || {};

 
 

-             var vertexType = svgPassiveVertex(node, graph, activeID);
+           if (kOld) {
+             _pendingChange[kOld] = undefined;
+           }

 
 

-             if (vertexType !== 0) {
-               // passive or adjacent - allow to connect
-               data.targets.push({
-                 type: 'Feature',
-                 id: node.id,
-                 properties: {
-                   target: true,
-                   entity: node
-                 },
-                 geometry: node.asGeoJSON()
-               });
-             } else {
-               data.nopes.push({
-                 type: 'Feature',
-                 id: node.id + '-nope',
-                 properties: {
-                   nope: true,
-                   target: true,
-                   entity: node
-                 },
-                 geometry: node.asGeoJSON()
-               });
-             }
-           }); // Targets allow hover and vertex snapping
+           _pendingChange[kNew] = vNew; // update the ordered key index so this row doesn't change position

 
 

-           var targets = selection.selectAll('.vertex.target-allowed').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(data.targets, function key(d) {
-             return d.id;
-           }); // exit
+           var existingKeyIndex = _orderedKeys.indexOf(kOld);

 
 

-           targets.exit().remove(); // enter/update
+           if (existingKeyIndex !== -1) _orderedKeys[existingKeyIndex] = kNew;
+           d.key = kNew; // update datum to avoid exit/enter on tag update

 
 

-           targets.enter().append('circle').attr('r', function (d) {
-             return _radii[d.id] || radiuses.shadow[3];
-           }).merge(targets).attr('class', function (d) {
-             return 'node vertex target target-allowed ' + targetClass + d.id;
-           }).attr('transform', getTransform); // NOPE
+           d.value = vNew;
+           this.value = kNew;
+           utilGetSetValue(inputVal, vNew);
+           scheduleChange();
+         }

 
 

-           var nopes = selection.selectAll('.vertex.target-nope').filter(function (d) {
-             return filter(d.properties.entity);
-           }).data(data.nopes, function key(d) {
-             return d.id;
-           }); // exit
+         function valueChange(d3_event, d) {
+           if (isReadOnly(d)) return; // exit if this is a multiselection and no value was entered

 
 

-           nopes.exit().remove(); // enter/update
+           if (typeof d.value !== 'string' && !this.value) return; // exit if we are currently about to delete this row anyway - #6366

 
 

-           nopes.enter().append('circle').attr('r', function (d) {
-             return _radii[d.properties.entity.id] || radiuses.shadow[3];
-           }).merge(nopes).attr('class', function (d) {
-             return 'node vertex target target-nope ' + nopeClass + d.id;
-           }).attr('transform', getTransform);
-         } // Points can also render as vertices:
-         // 1. in wireframe mode or
-         // 2. at higher zooms if they have a direction
+           if (_pendingChange && _pendingChange.hasOwnProperty(d.key) && _pendingChange[d.key] === undefined) return;
+           _pendingChange = _pendingChange || {};
+           _pendingChange[d.key] = context.cleanTagValue(this.value);
+           scheduleChange();
+         }

 
 

+         function removeTag(d3_event, d) {
+           if (isReadOnly(d)) return;

 
 

-         function renderAsVertex(entity, graph, wireframe, zoom) {
-           var geometry = entity.geometry(graph);
-           return geometry === 'vertex' || geometry === 'point' && (wireframe || zoom >= 18 && entity.directions(graph, projection).length);
+           if (d.key === '') {
+             // removing the blank row
+             _showBlank = false;
+             section.reRender();
+           } else {
+             // remove the key from the ordered key index
+             _orderedKeys = _orderedKeys.filter(function (key) {
+               return key !== d.key;
+             });
+             _pendingChange = _pendingChange || {};
+             _pendingChange[d.key] = undefined;
+             scheduleChange();
+           }

          }
 
          }
 

-         function isEditedNode(node, base, head) {
-           var baseNode = base.entities[node.id];
-           var headNode = head.entities[node.id];
-           return !headNode || !baseNode || !fastDeepEqual(headNode.tags, baseNode.tags) || !fastDeepEqual(headNode.loc, baseNode.loc);
+         function addTag() {
+           // Delay render in case this click is blurring an edited combo.
+           // Without the setTimeout, the `content` render would wipe out the pending tag change.
+           window.setTimeout(function () {
+             _showBlank = true;
+             section.reRender();
+             section.selection().selectAll('.tag-list li:last-child input.key').node().focus();
+           }, 20);

          }
 
          }
 

-         function getSiblingAndChildVertices(ids, graph, wireframe, zoom) {
-           var results = {};
-           var seenIds = {};
+         function scheduleChange() {
+           // Cache IDs in case the editor is reloaded before the change event is called. - #6028
+           var entityIDs = _entityIDs; // Delay change in case this change is blurring an edited combo. - #5878

 
 

-           function addChildVertices(entity) {
-             // avoid redundant work and infinite recursion of circular relations
-             if (seenIds[entity.id]) return;
-             seenIds[entity.id] = true;
-             var geometry = entity.geometry(graph);
+           window.setTimeout(function () {
+             if (!_pendingChange) return;
+             dispatch.call('change', this, entityIDs, _pendingChange);
+             _pendingChange = null;
+           }, 10);
+         }

 
 

-             if (!context.features().isHiddenFeature(entity, graph, geometry)) {
-               var i;
+         section.state = function (val) {
+           if (!arguments.length) return _state;

 
 

-               if (entity.type === 'way') {
-                 for (i = 0; i < entity.nodes.length; i++) {
-                   var child = graph.hasEntity(entity.nodes[i]);
+           if (_state !== val) {
+             _orderedKeys = [];
+             _state = val;
+           }

 
 

-                   if (child) {
-                     addChildVertices(child);
-                   }
-                 }
-               } else if (entity.type === 'relation') {
-                 for (i = 0; i < entity.members.length; i++) {
-                   var member = graph.hasEntity(entity.members[i].id);
+           return section;
+         };

 
 

-                   if (member) {
-                     addChildVertices(member);
-                   }
-                 }
-               } else if (renderAsVertex(entity, graph, wireframe, zoom)) {
-                 results[entity.id] = entity;
-               }
-             }
-           }
+         section.presets = function (val) {
+           if (!arguments.length) return _presets;
+           _presets = val;

 
 

-           ids.forEach(function (id) {
-             var entity = graph.hasEntity(id);
-             if (!entity) return;
+           if (_presets && _presets.length && _presets[0].isFallback()) {
+             section.disclosureExpanded(true); // don't collapse the disclosure if the mapper used the raw tag editor - #1881
+           } else if (!_didInteract) {
+             section.disclosureExpanded(null);
+           }

 
 

-             if (entity.type === 'node') {
-               if (renderAsVertex(entity, graph, wireframe, zoom)) {
-                 results[entity.id] = entity;
-                 graph.parentWays(entity).forEach(function (entity) {
-                   addChildVertices(entity);
-                 });
-               }
-             } else {
-               // way, relation
-               addChildVertices(entity);
-             }
-           });
-           return results;
-         }
+           return section;
+         };

 
 

-         function drawVertices(selection, graph, entities, filter, extent, fullRedraw) {
-           var wireframe = context.surface().classed('fill-wireframe');
-           var visualDiff = context.surface().classed('highlight-edited');
-           var zoom = geoScaleToZoom(projection.scale());
-           var mode = context.mode();
-           var isMoving = mode && /^(add|draw|drag|move|rotate)/.test(mode.id);
-           var base = context.history().base();
-           var drawLayer = selection.selectAll('.layer-osm.points .points-group.vertices');
-           var touchLayer = selection.selectAll('.layer-touch.points');
+         section.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val;
+           return section;
+         };

 
 

-           if (fullRedraw) {
-             _currPersistent = {};
-             _radii = {};
-           } // Collect important vertices from the `entities` list..
-           // (during a partial redraw, it will not contain everything)
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;

 
 

+           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
+             _entityIDs = val;
+             _orderedKeys = [];
+           }

 
 

-           for (var i = 0; i < entities.length; i++) {
-             var entity = entities[i];
-             var geometry = entity.geometry(graph);
-             var keep = false; // a point that looks like a vertex..
+           return section;
+         }; // pass an array of regular expressions to test against the tag key

 
 

-             if (geometry === 'point' && renderAsVertex(entity, graph, wireframe, zoom)) {
-               _currPersistent[entity.id] = entity;
-               keep = true; // a vertex of some importance..
-             } else if (geometry === 'vertex' && (entity.hasInterestingTags() || entity.isEndpoint(graph) || entity.isConnected(graph) || visualDiff && isEditedNode(entity, base, graph))) {
-               _currPersistent[entity.id] = entity;
-               keep = true;
-             } // whatever this is, it's not a persistent vertex..

 
 

+         section.readOnlyTags = function (val) {
+           if (!arguments.length) return _readOnlyTags;
+           _readOnlyTags = val;
+           return section;
+         };

 
 

-             if (!keep && !fullRedraw) {
-               delete _currPersistent[entity.id];
-             }
-           } // 3 sets of vertices to consider:
+         return utilRebind(section, dispatch, 'on');
+       }

 
 

+       function uiDataEditor(context) {
+         var dataHeader = uiDataHeader();
+         var rawTagEditor = uiSectionRawTagEditor('custom-data-tag-editor', context).expandedByDefault(true).readOnlyTags([/./]);

 
 

-           var sets = {
-             persistent: _currPersistent,
-             // persistent = important vertices (render always)
-             selected: _currSelected,
-             // selected + siblings of selected (render always)
-             hovered: _currHover // hovered + siblings of hovered (render only in draw modes)
+         var _datum;

 
 

-           };
-           var all = Object.assign({}, isMoving ? _currHover : {}, _currSelected, _currPersistent); // Draw the vertices..
-           // The filter function controls the scope of what objects d3 will touch (exit/enter/update)
-           // Adjust the filter function to expand the scope beyond whatever entities were passed in.
+         function dataEditor(selection) {
+           var header = selection.selectAll('.header').data([0]);
+           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('map_data.title'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body);
+           var editor = body.selectAll('.data-editor').data([0]); // enter/update

 
 

-           var filterRendered = function filterRendered(d) {
-             return d.id in _currPersistent || d.id in _currSelected || d.id in _currHover || filter(d);
-           };
+           editor.enter().append('div').attr('class', 'modal-section data-editor').merge(editor).call(dataHeader.datum(_datum));
+           var rte = body.selectAll('.raw-tag-editor').data([0]); // enter/update

 
 

-           drawLayer.call(draw, graph, currentVisible(all), sets, filterRendered); // Draw touch targets..
-           // When drawing, render all targets (not just those affected by a partial redraw)
+           rte.enter().append('div').attr('class', 'raw-tag-editor data-editor').merge(rte).call(rawTagEditor.tags(_datum && _datum.properties || {}).state('hover').render).selectAll('textarea.tag-text').attr('readonly', true).classed('readonly', true);
+         }

 
 

-           var filterTouch = function filterTouch(d) {
-             return isMoving ? true : filterRendered(d);
-           };
+         dataEditor.datum = function (val) {
+           if (!arguments.length) return _datum;
+           _datum = val;
+           return this;
+         };

 
 

-           touchLayer.call(drawTargets, graph, currentVisible(all), filterTouch);
+         return dataEditor;
+       }

 
 

-           function currentVisible(which) {
-             return Object.keys(which).map(graph.hasEntity, graph) // the current version of this entity
-             .filter(function (entity) {
-               return entity && entity.intersects(extent, graph);
-             });
-           }
-         } // partial redraw - only update the selected items..
+       var sexagesimal = {exports: {}};

 
 

+       sexagesimal.exports = element;
+       var pair_1 = sexagesimal.exports.pair = pair;
+       sexagesimal.exports.format = format;
+       sexagesimal.exports.formatPair = formatPair;
+       sexagesimal.exports.coordToDMS = coordToDMS;

 
 

-         drawVertices.drawSelected = function (selection, graph, extent) {
-           var wireframe = context.surface().classed('fill-wireframe');
-           var zoom = geoScaleToZoom(projection.scale());
-           _prevSelected = _currSelected || {};
+       function element(input, dims) {
+         var result = search(input, dims);
+         return result === null ? null : result.val;
+       }

 
 

-           if (context.map().isInWideSelection()) {
-             _currSelected = {};
-             context.selectedIDs().forEach(function (id) {
-               var entity = graph.hasEntity(id);
-               if (!entity) return;
+       function formatPair(input) {
+         return format(input.lat, 'lat') + ' ' + format(input.lon, 'lon');
+       } // Is 0 North or South?

 
 

-               if (entity.type === 'node') {
-                 if (renderAsVertex(entity, graph, wireframe, zoom)) {
-                   _currSelected[entity.id] = entity;
-                 }
-               }
-             });
-           } else {
-             _currSelected = getSiblingAndChildVertices(context.selectedIDs(), graph, wireframe, zoom);
-           } // note that drawVertices will add `_currSelected` automatically if needed..

 
 

+       function format(input, dim) {
+         var dms = coordToDMS(input, dim);
+         return dms.whole + '° ' + (dms.minutes ? dms.minutes + '\' ' : '') + (dms.seconds ? dms.seconds + '" ' : '') + dms.dir;
+       }

 
 

-           var filter = function filter(d) {
-             return d.id in _prevSelected;
-           };
+       function coordToDMS(input, dim) {
+         var dirs = {
+           lat: ['N', 'S'],
+           lon: ['E', 'W']
+         }[dim] || '';
+         var dir = dirs[input >= 0 ? 0 : 1];
+         var abs = Math.abs(input);
+         var whole = Math.floor(abs);
+         var fraction = abs - whole;
+         var fractionMinutes = fraction * 60;
+         var minutes = Math.floor(fractionMinutes);
+         var seconds = Math.floor((fractionMinutes - minutes) * 60);
+         return {
+           whole: whole,
+           minutes: minutes,
+           seconds: seconds,
+           dir: dir
+         };
+       }

 
 

-           drawVertices(selection, graph, Object.values(_prevSelected), filter, extent, false);
-         }; // partial redraw - only update the hovered items..
+       function search(input, dims) {
+         if (!dims) dims = 'NSEW';
+         if (typeof input !== 'string') return null;
+         input = input.toUpperCase();
+         var regex = /^[\s\,]*([NSEW])?\s*([\-|\—|\―]?[0-9.]+)[°º˚]?\s*(?:([0-9.]+)['’′‘]\s*)?(?:([0-9.]+)(?:''|"|”|″)\s*)?([NSEW])?/;
+         var m = input.match(regex);
+         if (!m) return null; // no match

 
 

+         var matched = m[0]; // extract dimension.. m[1] = leading, m[5] = trailing

 
 

-         drawVertices.drawHover = function (selection, graph, target, extent) {
-           if (target === _currHoverTarget) return; // continue only if something changed
+         var dim;

 
 

-           var wireframe = context.surface().classed('fill-wireframe');
-           var zoom = geoScaleToZoom(projection.scale());
-           _prevHover = _currHover || {};
-           _currHoverTarget = target;
-           var entity = target && target.properties && target.properties.entity;
+         if (m[1] && m[5]) {
+           // if matched both..
+           dim = m[1]; // keep leading

 
 

-           if (entity) {
-             _currHover = getSiblingAndChildVertices([entity.id], graph, wireframe, zoom);
-           } else {
-             _currHover = {};
-           } // note that drawVertices will add `_currHover` automatically if needed..
+           matched = matched.slice(0, -1); // remove trailing dimension from match
+         } else {
+           dim = m[1] || m[5];
+         } // if unrecognized dimension

 
 
 
 

-           var filter = function filter(d) {
-             return d.id in _prevHover;
-           };
+         if (dim && dims.indexOf(dim) === -1) return null; // extract DMS

 
 

-           drawVertices(selection, graph, Object.values(_prevHover), filter, extent, false);
+         var deg = m[2] ? parseFloat(m[2]) : 0;
+         var min = m[3] ? parseFloat(m[3]) / 60 : 0;
+         var sec = m[4] ? parseFloat(m[4]) / 3600 : 0;
+         var sign = deg < 0 ? -1 : 1;
+         if (dim === 'S' || dim === 'W') sign *= -1;
+         return {
+           val: (Math.abs(deg) + min + sec) * sign,
+           dim: dim,
+           matched: matched,
+           remain: input.slice(matched.length)

          };
          };

-
-         return drawVertices;

        }
 
        }
 

-       function utilBindOnce(target, type, listener, capture) {
-         var typeOnce = type + '.once';
+       function pair(input, dims) {
+         input = input.trim();
+         var one = search(input, dims);
+         if (!one) return null;
+         input = one.remain.trim();
+         var two = search(input, dims);
+         if (!two || two.remain) return null;

 
 

-         function one() {
-           target.on(typeOnce, null);
-           listener.apply(this, arguments);
+         if (one.dim) {
+           return swapdim(one.val, two.val, one.dim);
+         } else {
+           return [one.val, two.val];

          }
          }

-
-         target.on(typeOnce, one, capture);
-         return this;

        }
 
        }
 

-       function defaultFilter$2(d3_event) {
-         return !d3_event.ctrlKey && !d3_event.button;
+       function swapdim(a, b, dim) {
+         if (dim === 'N' || dim === 'S') return [a, b];
+         if (dim === 'W' || dim === 'E') return [b, a];

        }
 
        }
 

-       function defaultExtent$1() {
-         var e = this;
+       function uiFeatureList(context) {
+         var _geocodeResults;

 
 

-         if (e instanceof SVGElement) {
-           e = e.ownerSVGElement || e;
+         function featureList(selection) {
+           var header = selection.append('div').attr('class', 'header fillL');
+           header.append('h3').html(_t.html('inspector.feature_list'));
+           var searchWrap = selection.append('div').attr('class', 'search-header');
+           searchWrap.call(svgIcon('#iD-icon-search', 'pre-text'));
+           var search = searchWrap.append('input').attr('placeholder', _t('inspector.search')).attr('type', 'search').call(utilNoAuto).on('keypress', keypress).on('keydown', keydown).on('input', inputevent);
+           var listWrap = selection.append('div').attr('class', 'inspector-body');
+           var list = listWrap.append('div').attr('class', 'feature-list');
+           context.on('exit.feature-list', clearSearch);
+           context.map().on('drawn.feature-list', mapDrawn);
+           context.keybinding().on(uiCmd('⌘F'), focusSearch);

 
 

-           if (e.hasAttribute('viewBox')) {
-             e = e.viewBox.baseVal;
-             return [[e.x, e.y], [e.x + e.width, e.y + e.height]];
+           function focusSearch(d3_event) {
+             var mode = context.mode() && context.mode().id;
+             if (mode !== 'browse') return;
+             d3_event.preventDefault();
+             search.node().focus();

            }
 
            }
 

-           return [[0, 0], [e.width.baseVal.value, e.height.baseVal.value]];
-         }
-
-         return [[0, 0], [e.clientWidth, e.clientHeight]];
-       }
-
-       function defaultWheelDelta$1(d3_event) {
-         return -d3_event.deltaY * (d3_event.deltaMode === 1 ? 0.05 : d3_event.deltaMode ? 1 : 0.002);
-       }
+           function keydown(d3_event) {
+             if (d3_event.keyCode === 27) {
+               // escape
+               search.node().blur();
+             }
+           }

 
 

-       function defaultConstrain$1(transform, extent, translateExtent) {
-         var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
-             dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
-             dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],
-             dy1 = transform.invertY(extent[1][1]) - translateExtent[1][1];
-         return transform.translate(dx1 > dx0 ? (dx0 + dx1) / 2 : Math.min(0, dx0) || Math.max(0, dx1), dy1 > dy0 ? (dy0 + dy1) / 2 : Math.min(0, dy0) || Math.max(0, dy1));
-       }
+           function keypress(d3_event) {
+             var q = search.property('value'),
+                 items = list.selectAll('.feature-list-item');

 
 

-       function utilZoomPan() {
-         var filter = defaultFilter$2,
-             extent = defaultExtent$1,
-             constrain = defaultConstrain$1,
-             wheelDelta = defaultWheelDelta$1,
-             scaleExtent = [0, Infinity],
-             translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
-             interpolate = interpolateZoom,
-             dispatch$1 = dispatch('start', 'zoom', 'end'),
-             _wheelDelay = 150,
-             _transform = identity$2,
-             _activeGesture;
+             if (d3_event.keyCode === 13 && // ↩ Return
+             q.length && items.size()) {
+               click(d3_event, items.datum());
+             }
+           }

 
 

-         function zoom(selection) {
-           selection.on('pointerdown.zoom', pointerdown).on('wheel.zoom', wheeled).style('touch-action', 'none').style('-webkit-tap-highlight-color', 'rgba(0,0,0,0)');
-           select(window).on('pointermove.zoompan', pointermove).on('pointerup.zoompan pointercancel.zoompan', pointerup);
-         }
+           function inputevent() {
+             _geocodeResults = undefined;
+             drawList();
+           }

 
 

-         zoom.transform = function (collection, transform, point) {
-           var selection = collection.selection ? collection.selection() : collection;
+           function clearSearch() {
+             search.property('value', '');
+             drawList();
+           }

 
 

-           if (collection !== selection) {
-             schedule(collection, transform, point);
-           } else {
-             selection.interrupt().each(function () {
-               gesture(this, arguments).start(null).zoom(null, null, typeof transform === 'function' ? transform.apply(this, arguments) : transform).end(null);
-             });
+           function mapDrawn(e) {
+             if (e.full) {
+               drawList();
+             }

            }
            }

-         };

 
 

-         zoom.scaleBy = function (selection, k, p) {
-           zoom.scaleTo(selection, function () {
-             var k0 = _transform.k,
-                 k1 = typeof k === 'function' ? k.apply(this, arguments) : k;
-             return k0 * k1;
-           }, p);
-         };
+           function features() {
+             var result = [];
+             var graph = context.graph();
+             var visibleCenter = context.map().extent().center();
+             var q = search.property('value').toLowerCase();
+             if (!q) return result;
+             var locationMatch = pair_1(q.toUpperCase()) || q.match(/^(-?\d+\.?\d*)\s+(-?\d+\.?\d*)$/);

 
 

-         zoom.scaleTo = function (selection, k, p) {
-           zoom.transform(selection, function () {
-             var e = extent.apply(this, arguments),
-                 t0 = _transform,
-                 p0 = !p ? centroid(e) : typeof p === 'function' ? p.apply(this, arguments) : p,
-                 p1 = t0.invert(p0),
-                 k1 = typeof k === 'function' ? k.apply(this, arguments) : k;
-             return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent);
-           }, p);
-         };
+             if (locationMatch) {
+               var loc = [parseFloat(locationMatch[0]), parseFloat(locationMatch[1])];
+               result.push({
+                 id: -1,
+                 geometry: 'point',
+                 type: _t('inspector.location'),
+                 name: dmsCoordinatePair([loc[1], loc[0]]),
+                 location: loc
+               });
+             } // A location search takes priority over an ID search

 
 

-         zoom.translateBy = function (selection, x, y) {
-           zoom.transform(selection, function () {
-             return constrain(_transform.translate(typeof x === 'function' ? x.apply(this, arguments) : x, typeof y === 'function' ? y.apply(this, arguments) : y), extent.apply(this, arguments), translateExtent);
-           });
-         };

 
 

-         zoom.translateTo = function (selection, x, y, p) {
-           zoom.transform(selection, function () {
-             var e = extent.apply(this, arguments),
-                 t = _transform,
-                 p0 = !p ? centroid(e) : typeof p === 'function' ? p.apply(this, arguments) : p;
-             return constrain(identity$2.translate(p0[0], p0[1]).scale(t.k).translate(typeof x === 'function' ? -x.apply(this, arguments) : -x, typeof y === 'function' ? -y.apply(this, arguments) : -y), e, translateExtent);
-           }, p);
-         };
+             var idMatch = !locationMatch && q.match(/(?:^|\W)(node|way|relation|[nwr])\W?0*([1-9]\d*)(?:\W|$)/i);

 
 

-         function scale(transform, k) {
-           k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
-           return k === transform.k ? transform : new Transform(k, transform.x, transform.y);
-         }
+             if (idMatch) {
+               var elemType = idMatch[1].charAt(0);
+               var elemId = idMatch[2];
+               result.push({
+                 id: elemType + elemId,
+                 geometry: elemType === 'n' ? 'point' : elemType === 'w' ? 'line' : 'relation',
+                 type: elemType === 'n' ? _t('inspector.node') : elemType === 'w' ? _t('inspector.way') : _t('inspector.relation'),
+                 name: elemId
+               });
+             }

 
 

-         function translate(transform, p0, p1) {
-           var x = p0[0] - p1[0] * transform.k,
-               y = p0[1] - p1[1] * transform.k;
-           return x === transform.x && y === transform.y ? transform : new Transform(transform.k, x, y);
-         }
+             var allEntities = graph.entities;
+             var localResults = [];

 
 

-         function centroid(extent) {
-           return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
-         }
+             for (var id in allEntities) {
+               var entity = allEntities[id];
+               if (!entity) continue;
+               var name = utilDisplayName(entity) || '';
+               if (name.toLowerCase().indexOf(q) < 0) continue;
+               var matched = _mainPresetIndex.match(entity, graph);
+               var type = matched && matched.name() || utilDisplayType(entity.id);
+               var extent = entity.extent(graph);
+               var distance = extent ? geoSphericalDistance(visibleCenter, extent.center()) : 0;
+               localResults.push({
+                 id: entity.id,
+                 entity: entity,
+                 geometry: entity.geometry(graph),
+                 type: type,
+                 name: name,
+                 distance: distance
+               });
+               if (localResults.length > 100) break;
+             }

 
 

-         function schedule(transition, transform, point) {
-           transition.on('start.zoom', function () {
-             gesture(this, arguments).start(null);
-           }).on('interrupt.zoom end.zoom', function () {
-             gesture(this, arguments).end(null);
-           }).tween('zoom', function () {
-             var that = this,
-                 args = arguments,
-                 g = gesture(that, args),
-                 e = extent.apply(that, args),
-                 p = !point ? centroid(e) : typeof point === 'function' ? point.apply(that, args) : point,
-                 w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
-                 a = _transform,
-                 b = typeof transform === 'function' ? transform.apply(that, args) : transform,
-                 i = interpolate(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
-             return function (t) {
-               if (t === 1) t = b; // Avoid rounding error on end.
-               else {
-                   var l = i(t),
-                       k = w / l[2];
-                   t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k);
-                 }
-               g.zoom(null, null, t);
-             };
-           });
-         }
+             localResults = localResults.sort(function byDistance(a, b) {
+               return a.distance - b.distance;
+             });
+             result = result.concat(localResults);

 
 

-         function gesture(that, args, clean) {
-           return !clean && _activeGesture || new Gesture(that, args);
-         }
+             (_geocodeResults || []).forEach(function (d) {
+               if (d.osm_type && d.osm_id) {
+                 // some results may be missing these - #1890
+                 // Make a temporary osmEntity so we can preset match
+                 // and better localize the search result - #4725
+                 var id = osmEntity.id.fromOSM(d.osm_type, d.osm_id);
+                 var tags = {};
+                 tags[d["class"]] = d.type;
+                 var attrs = {
+                   id: id,
+                   type: d.osm_type,
+                   tags: tags
+                 };

 
 

-         function Gesture(that, args) {
-           this.that = that;
-           this.args = args;
-           this.active = 0;
-           this.extent = extent.apply(that, args);
-         }
+                 if (d.osm_type === 'way') {
+                   // for ways, add some fake closed nodes
+                   attrs.nodes = ['a', 'a']; // so that geometry area is possible
+                 }

 
 

-         Gesture.prototype = {
-           start: function start(d3_event) {
-             if (++this.active === 1) {
-               _activeGesture = this;
-               dispatch$1.call('start', this, d3_event);
-             }
+                 var tempEntity = osmEntity(attrs);
+                 var tempGraph = coreGraph([tempEntity]);
+                 var matched = _mainPresetIndex.match(tempEntity, tempGraph);
+                 var type = matched && matched.name() || utilDisplayType(id);
+                 result.push({
+                   id: tempEntity.id,
+                   geometry: tempEntity.geometry(tempGraph),
+                   type: type,
+                   name: d.display_name,
+                   extent: new geoExtent([parseFloat(d.boundingbox[3]), parseFloat(d.boundingbox[0])], [parseFloat(d.boundingbox[2]), parseFloat(d.boundingbox[1])])
+                 });
+               }
+             });

 
 

-             return this;
-           },
-           zoom: function zoom(d3_event, key, transform) {
-             if (this.mouse && key !== 'mouse') this.mouse[1] = transform.invert(this.mouse[0]);
-             if (this.pointer0 && key !== 'touch') this.pointer0[1] = transform.invert(this.pointer0[0]);
-             if (this.pointer1 && key !== 'touch') this.pointer1[1] = transform.invert(this.pointer1[0]);
-             _transform = transform;
-             dispatch$1.call('zoom', this, d3_event, key, transform);
-             return this;
-           },
-           end: function end(d3_event) {
-             if (--this.active === 0) {
-               _activeGesture = null;
-               dispatch$1.call('end', this, d3_event);
+             if (q.match(/^[0-9]+$/)) {
+               // if query is just a number, possibly an OSM ID without a prefix
+               result.push({
+                 id: 'n' + q,
+                 geometry: 'point',
+                 type: _t('inspector.node'),
+                 name: q
+               });
+               result.push({
+                 id: 'w' + q,
+                 geometry: 'line',
+                 type: _t('inspector.way'),
+                 name: q
+               });
+               result.push({
+                 id: 'r' + q,
+                 geometry: 'relation',
+                 type: _t('inspector.relation'),
+                 name: q
+               });

              }
 
              }
 

-             return this;
+             return result;

            }
            }

-         };

 
 

-         function wheeled(d3_event) {
-           if (!filter.apply(this, arguments)) return;
-           var g = gesture(this, arguments),
-               t = _transform,
-               k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))),
-               p = utilFastMouse(this)(d3_event); // If the mouse is in the same location as before, reuse it.
-           // If there were recent wheel events, reset the wheel idle timeout.
+           function drawList() {
+             var value = search.property('value');
+             var results = features();
+             list.classed('filtered', value.length);
+             var resultsIndicator = list.selectAll('.no-results-item').data([0]).enter().append('button').property('disabled', true).attr('class', 'no-results-item').call(svgIcon('#iD-icon-alert', 'pre-text'));
+             resultsIndicator.append('span').attr('class', 'entity-name');
+             list.selectAll('.no-results-item .entity-name').html(_t.html('geocoder.no_results_worldwide'));

 
 

-           if (g.wheel) {
-             if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
-               g.mouse[1] = t.invert(g.mouse[0] = p);
+             if (services.geocoder) {
+               list.selectAll('.geocode-item').data([0]).enter().append('button').attr('class', 'geocode-item secondary-action').on('click', geocoderSearch).append('div').attr('class', 'label').append('span').attr('class', 'entity-name').html(_t.html('geocoder.search'));

              }
 
              }
 

-             clearTimeout(g.wheel); // Otherwise, capture the mouse point and location at the start.
-           } else {
-             g.mouse = [p, t.invert(p)];
-             interrupt(this);
-             g.start(d3_event);
+             list.selectAll('.no-results-item').style('display', value.length && !results.length ? 'block' : 'none');
+             list.selectAll('.geocode-item').style('display', value && _geocodeResults === undefined ? 'block' : 'none');
+             list.selectAll('.feature-list-item').data([-1]).remove();
+             var items = list.selectAll('.feature-list-item').data(results, function (d) {
+               return d.id;
+             });
+             var enter = items.enter().insert('button', '.geocode-item').attr('class', 'feature-list-item').on('mouseover', mouseover).on('mouseout', mouseout).on('click', click);
+             var label = enter.append('div').attr('class', 'label');
+             label.each(function (d) {
+               select(this).call(svgIcon('#iD-icon-' + d.geometry, 'pre-text'));
+             });
+             label.append('span').attr('class', 'entity-type').html(function (d) {
+               return d.type;
+             });
+             label.append('span').attr('class', 'entity-name').html(function (d) {
+               return d.name;
+             });
+             enter.style('opacity', 0).transition().style('opacity', 1);
+             items.order();
+             items.exit().remove();

            }
 
            }
 

-           d3_event.preventDefault();
-           d3_event.stopImmediatePropagation();
-           g.wheel = setTimeout(wheelidled, _wheelDelay);
-           g.zoom(d3_event, 'mouse', constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
+           function mouseover(d3_event, d) {
+             if (d.id === -1) return;
+             utilHighlightEntities([d.id], true, context);
+           }

 
 

-           function wheelidled() {
-             g.wheel = null;
-             g.end(d3_event);
+           function mouseout(d3_event, d) {
+             if (d.id === -1) return;
+             utilHighlightEntities([d.id], false, context);

            }
            }

-         }

 
 

-         var _downPointerIDs = new Set();
+           function click(d3_event, d) {
+             d3_event.preventDefault();

 
 

-         var _pointerLocGetter;
+             if (d.location) {
+               context.map().centerZoomEase([d.location[1], d.location[0]], 19);
+             } else if (d.entity) {
+               utilHighlightEntities([d.id], false, context);
+               context.enter(modeSelect(context, [d.entity.id]));
+               context.map().zoomToEase(d.entity);
+             } else {
+               // download, zoom to, and select the entity with the given ID
+               context.zoomToEntity(d.id);
+             }
+           }

 
 

-         function pointerdown(d3_event) {
-           _downPointerIDs.add(d3_event.pointerId);
+           function geocoderSearch() {
+             services.geocoder.search(search.property('value'), function (err, resp) {
+               _geocodeResults = resp || [];
+               drawList();
+             });
+           }
+         }

 
 

-           if (!filter.apply(this, arguments)) return;
-           var g = gesture(this, arguments, _downPointerIDs.size === 1);
-           var started;
-           d3_event.stopImmediatePropagation();
-           _pointerLocGetter = utilFastMouse(this);
+         return featureList;
+       }

 
 

-           var loc = _pointerLocGetter(d3_event);
+       var $$1 = _export;
+       var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
+       var toLength$1 = toLength$q;
+       var notARegExp$1 = notARegexp;
+       var requireObjectCoercible$1 = requireObjectCoercible$e;
+       var correctIsRegExpLogic$1 = correctIsRegexpLogic;

 
 

-           var p = [loc, _transform.invert(loc), d3_event.pointerId];
+       // eslint-disable-next-line es/no-string-prototype-startswith -- safe
+       var $startsWith = ''.startsWith;
+       var min$1 = Math.min;

 
 

-           if (!g.pointer0) {
-             g.pointer0 = p;
-             started = true;
-           } else if (!g.pointer1 && g.pointer0[2] !== p[2]) {
-             g.pointer1 = p;
-           }
+       var CORRECT_IS_REGEXP_LOGIC$1 = correctIsRegExpLogic$1('startsWith');
+       // https://github.com/zloirock/core-js/pull/702
+       var MDN_POLYFILL_BUG$1 = !CORRECT_IS_REGEXP_LOGIC$1 && !!function () {
+         var descriptor = getOwnPropertyDescriptor$1(String.prototype, 'startsWith');
+         return descriptor && !descriptor.writable;
+       }();

 
 

-           if (started) {
-             interrupt(this);
-             g.start(d3_event);
-           }
+       // `String.prototype.startsWith` method
+       // https://tc39.es/ecma262/#sec-string.prototype.startswith
+       $$1({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG$1 && !CORRECT_IS_REGEXP_LOGIC$1 }, {
+         startsWith: function startsWith(searchString /* , position = 0 */) {
+           var that = String(requireObjectCoercible$1(this));
+           notARegExp$1(searchString);
+           var index = toLength$1(min$1(arguments.length > 1 ? arguments[1] : undefined, that.length));
+           var search = String(searchString);
+           return $startsWith
+             ? $startsWith.call(that, search, index)
+             : that.slice(index, index + search.length) === search;

          }
          }

+       });

 
 

-         function pointermove(d3_event) {
-           if (!_downPointerIDs.has(d3_event.pointerId)) return;
-           if (!_activeGesture || !_pointerLocGetter) return;
-           var g = gesture(this, arguments);
-           var isPointer0 = g.pointer0 && g.pointer0[2] === d3_event.pointerId;
-           var isPointer1 = !isPointer0 && g.pointer1 && g.pointer1[2] === d3_event.pointerId;
+       function uiSectionEntityIssues(context) {
+         // Does the user prefer to expand the active issue?  Useful for viewing tag diff.
+         // Expand by default so first timers see it - #6408, #8143
+         var preference = corePreferences('entity-issues.reference.expanded');

 
 

-           if ((isPointer0 || isPointer1) && 'buttons' in d3_event && !d3_event.buttons) {
-             // The pointer went up without ending the gesture somehow, e.g.
-             // a down mouse was moved off the map and released. End it here.
-             if (g.pointer0) _downPointerIDs["delete"](g.pointer0[2]);
-             if (g.pointer1) _downPointerIDs["delete"](g.pointer1[2]);
-             g.end(d3_event);
-             return;
-           }
+         var _expanded = preference === null ? true : preference === 'true';

 
 

-           d3_event.preventDefault();
-           d3_event.stopImmediatePropagation();
+         var _entityIDs = [];
+         var _issues = [];

 
 

-           var loc = _pointerLocGetter(d3_event);
+         var _activeIssueID;

 
 

-           var t, p, l;
-           if (isPointer0) g.pointer0[0] = loc;else if (isPointer1) g.pointer1[0] = loc;
-           t = _transform;
+         var section = uiSection('entity-issues', context).shouldDisplay(function () {
+           return _issues.length > 0;
+         }).label(function () {
+           return _t('inspector.title_count', {
+             title: _t.html('issues.list_title'),
+             count: _issues.length
+           });
+         }).disclosureContent(renderDisclosureContent);
+         context.validator().on('validated.entity_issues', function () {
+           // Refresh on validated events
+           reloadIssues();
+           section.reRender();
+         }).on('focusedIssue.entity_issues', function (issue) {
+           makeActiveIssue(issue.id);
+         });

 
 

-           if (g.pointer1) {
-             var p0 = g.pointer0[0],
-                 l0 = g.pointer0[1],
-                 p1 = g.pointer1[0],
-                 l1 = g.pointer1[1],
-                 dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
-                 dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
-             t = scale(t, Math.sqrt(dp / dl));
-             p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
-             l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
-           } else if (g.pointer0) {
-             p = g.pointer0[0];
-             l = g.pointer0[1];
-           } else return;
+         function reloadIssues() {
+           _issues = context.validator().getSharedEntityIssues(_entityIDs, {
+             includeDisabledRules: true
+           });
+         }

 
 

-           g.zoom(d3_event, 'touch', constrain(translate(t, p, l), g.extent, translateExtent));
+         function makeActiveIssue(issueID) {
+           _activeIssueID = issueID;
+           section.selection().selectAll('.issue-container').classed('active', function (d) {
+             return d.id === _activeIssueID;
+           });

          }
 
          }
 

-         function pointerup(d3_event) {
-           if (!_downPointerIDs.has(d3_event.pointerId)) return;
+         function renderDisclosureContent(selection) {
+           selection.classed('grouped-items-area', true);
+           _activeIssueID = _issues.length > 0 ? _issues[0].id : null;
+           var containers = selection.selectAll('.issue-container').data(_issues, function (d) {
+             return d.key;
+           }); // Exit

 
 

-           _downPointerIDs["delete"](d3_event.pointerId);
+           containers.exit().remove(); // Enter

 
 

-           if (!_activeGesture) return;
-           var g = gesture(this, arguments);
-           d3_event.stopImmediatePropagation();
-           if (g.pointer0 && g.pointer0[2] === d3_event.pointerId) delete g.pointer0;else if (g.pointer1 && g.pointer1[2] === d3_event.pointerId) delete g.pointer1;
+           var containersEnter = containers.enter().append('div').attr('class', 'issue-container');
+           var itemsEnter = containersEnter.append('div').attr('class', function (d) {
+             return 'issue severity-' + d.severity;
+           }).on('mouseover.highlight', function (d3_event, d) {
+             // don't hover-highlight the selected entity
+             var ids = d.entityIds.filter(function (e) {
+               return _entityIDs.indexOf(e) === -1;
+             });
+             utilHighlightEntities(ids, true, context);
+           }).on('mouseout.highlight', function (d3_event, d) {
+             var ids = d.entityIds.filter(function (e) {
+               return _entityIDs.indexOf(e) === -1;
+             });
+             utilHighlightEntities(ids, false, context);
+           });
+           var labelsEnter = itemsEnter.append('div').attr('class', 'issue-label');
+           var textEnter = labelsEnter.append('button').attr('class', 'issue-text').on('click', function (d3_event, d) {
+             makeActiveIssue(d.id); // expand only the clicked item

 
 

-           if (g.pointer1 && !g.pointer0) {
-             g.pointer0 = g.pointer1;
-             delete g.pointer1;
-           }
+             var extent = d.extent(context.graph());

 
 

-           if (g.pointer0) g.pointer0[1] = _transform.invert(g.pointer0[0]);else {
-             g.end(d3_event);
-           }
-         }
+             if (extent) {
+               var setZoom = Math.max(context.map().zoom(), 19);
+               context.map().unobscuredCenterZoomEase(extent.center(), setZoom);
+             }
+           });
+           textEnter.each(function (d) {
+             var iconName = '#iD-icon-' + (d.severity === 'warning' ? 'alert' : 'error');
+             select(this).call(svgIcon(iconName, 'issue-icon'));
+           });
+           textEnter.append('span').attr('class', 'issue-message');
+           var infoButton = labelsEnter.append('button').attr('class', 'issue-info-button').attr('title', _t('icons.information')).call(svgIcon('#iD-icon-inspect'));
+           infoButton.on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-         zoom.wheelDelta = function (_) {
-           return arguments.length ? (wheelDelta = utilFunctor(+_), zoom) : wheelDelta;
-         };
+             var container = select(this.parentNode.parentNode.parentNode);
+             var info = container.selectAll('.issue-info');
+             var isExpanded = info.classed('expanded');
+             _expanded = !isExpanded;
+             corePreferences('entity-issues.reference.expanded', _expanded); // update preference

 
 

-         zoom.filter = function (_) {
-           return arguments.length ? (filter = utilFunctor(!!_), zoom) : filter;
-         };
+             if (isExpanded) {
+               info.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
+                 info.classed('expanded', false);
+               });
+             } else {
+               info.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1').on('end', function () {
+                 info.style('max-height', null);
+               });
+             }
+           });
+           itemsEnter.append('ul').attr('class', 'issue-fix-list');
+           containersEnter.append('div').attr('class', 'issue-info' + (_expanded ? ' expanded' : '')).style('max-height', _expanded ? null : '0').style('opacity', _expanded ? '1' : '0').each(function (d) {
+             if (typeof d.reference === 'function') {
+               select(this).call(d.reference);
+             } else {
+               select(this).html(_t.html('inspector.no_documentation_key'));
+             }
+           }); // Update

 
 

-         zoom.extent = function (_) {
-           return arguments.length ? (extent = utilFunctor([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
-         };
+           containers = containers.merge(containersEnter).classed('active', function (d) {
+             return d.id === _activeIssueID;
+           });
+           containers.selectAll('.issue-message').html(function (d) {
+             return d.message(context);
+           }); // fixes

 
 

-         zoom.scaleExtent = function (_) {
-           return arguments.length ? (scaleExtent[0] = +_[0], scaleExtent[1] = +_[1], zoom) : [scaleExtent[0], scaleExtent[1]];
-         };
+           var fixLists = containers.selectAll('.issue-fix-list');
+           var fixes = fixLists.selectAll('.issue-fix-item').data(function (d) {
+             return d.fixes ? d.fixes(context) : [];
+           }, function (fix) {
+             return fix.id;
+           });
+           fixes.exit().remove();
+           var fixesEnter = fixes.enter().append('li').attr('class', 'issue-fix-item');
+           var buttons = fixesEnter.append('button').on('click', function (d3_event, d) {
+             // not all fixes are actionable
+             if (select(this).attr('disabled') || !d.onClick) return; // Don't run another fix for this issue within a second of running one
+             // (Necessary for "Select a feature type" fix. Most fixes should only ever run once)
+
+             if (d.issue.dateLastRanFix && new Date() - d.issue.dateLastRanFix < 1000) return;
+             d.issue.dateLastRanFix = new Date(); // remove hover-highlighting
+
+             utilHighlightEntities(d.issue.entityIds.concat(d.entityIds), false, context);
+             new Promise(function (resolve, reject) {
+               d.onClick(context, resolve, reject);
+
+               if (d.onClick.length <= 1) {
+                 // if the fix doesn't take any completion parameters then consider it resolved
+                 resolve();
+               }
+             }).then(function () {
+               // revalidate whenever the fix has finished running successfully
+               context.validator().validate();
+             });
+           }).on('mouseover.highlight', function (d3_event, d) {
+             utilHighlightEntities(d.entityIds, true, context);
+           }).on('mouseout.highlight', function (d3_event, d) {
+             utilHighlightEntities(d.entityIds, false, context);
+           });
+           buttons.each(function (d) {
+             var iconName = d.icon || 'iD-icon-wrench';
+
+             if (iconName.startsWith('maki')) {
+               iconName += '-15';
+             }
+
+             select(this).call(svgIcon('#' + iconName, 'fix-icon'));
+           });
+           buttons.append('span').attr('class', 'fix-message').html(function (d) {
+             return d.title;
+           });
+           fixesEnter.merge(fixes).selectAll('button').classed('actionable', function (d) {
+             return d.onClick;
+           }).attr('disabled', function (d) {
+             return d.onClick ? null : 'true';
+           }).attr('title', function (d) {
+             if (d.disabledReason) {
+               return d.disabledReason;
+             }

 
 

-         zoom.translateExtent = function (_) {
-           return arguments.length ? (translateExtent[0][0] = +_[0][0], translateExtent[1][0] = +_[1][0], translateExtent[0][1] = +_[0][1], translateExtent[1][1] = +_[1][1], zoom) : [[translateExtent[0][0], translateExtent[0][1]], [translateExtent[1][0], translateExtent[1][1]]];
-         };
+             return null;
+           });
+         }

 
 

-         zoom.constrain = function (_) {
-           return arguments.length ? (constrain = _, zoom) : constrain;
-         };
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;

 
 

-         zoom.interpolate = function (_) {
-           return arguments.length ? (interpolate = _, zoom) : interpolate;
-         };
+           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
+             _entityIDs = val;
+             _activeIssueID = null;
+             reloadIssues();
+           }

 
 

-         zoom._transform = function (_) {
-           return arguments.length ? (_transform = _, zoom) : _transform;
+           return section;

          };
 
          };
 

-         return utilRebind(zoom, dispatch$1, 'on');
+         return section;

        }
 
        }
 

-       // if pointer events are supported. Falls back to default `dblclick` event.
+       function uiPresetIcon() {
+         var _preset;

 
 

-       function utilDoubleUp() {
-         var dispatch$1 = dispatch('doubleUp');
-         var _maxTimespan = 500; // milliseconds
+         var _geometry;

 
 

-         var _maxDistance = 20; // web pixels; be somewhat generous to account for touch devices
+         var _sizeClass = 'medium';

 
 

-         var _pointer; // object representing the pointer that could trigger double up
+         function isSmall() {
+           return _sizeClass === 'small';
+         }

 
 

+         function presetIcon(selection) {
+           selection.each(render);
+         }

 
 

-         function pointerIsValidFor(loc) {
-           // second pointerup must occur within a small timeframe after the first pointerdown
-           return new Date().getTime() - _pointer.startTime <= _maxTimespan && // all pointer events must occur within a small distance of the first pointerdown
-           geoVecLength(_pointer.startLoc, loc) <= _maxDistance;
+         function getIcon(p, geom) {
+           if (isSmall() && p.isFallback && p.isFallback()) return 'iD-icon-' + p.id;
+           if (p.icon) return p.icon;
+           if (geom === 'line') return 'iD-other-line';
+           if (geom === 'vertex') return p.isFallback() ? '' : 'temaki-vertex';
+           if (isSmall() && geom === 'point') return '';
+           return 'maki-marker-stroked';

          }
 
          }
 

-         function pointerdown(d3_event) {
-           // ignore right-click
-           if (d3_event.ctrlKey || d3_event.button === 2) return;
-           var loc = [d3_event.clientX, d3_event.clientY]; // Don't rely on pointerId here since it can change between pointerdown
-           // events on touch devices
+         function renderPointBorder(container, drawPoint) {
+           var pointBorder = container.selectAll('.preset-icon-point-border').data(drawPoint ? [0] : []);
+           pointBorder.exit().remove();
+           var pointBorderEnter = pointBorder.enter();
+           var w = 40;
+           var h = 40;
+           pointBorderEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-point-border').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h)).append('path').attr('transform', 'translate(11.5, 8)').attr('d', 'M 17,8 C 17,13 11,21 8.5,23.5 C 6,21 0,13 0,8 C 0,4 4,-0.5 8.5,-0.5 C 13,-0.5 17,4 17,8 z');
+           pointBorder = pointBorderEnter.merge(pointBorder);
+         }

 
 

-           if (_pointer && !pointerIsValidFor(loc)) {
-             // if this pointer is no longer valid, clear it so another can be started
-             _pointer = undefined;
-           }
+         function renderCategoryBorder(container, category) {
+           var categoryBorder = container.selectAll('.preset-icon-category-border').data(category ? [0] : []);
+           categoryBorder.exit().remove();
+           var categoryBorderEnter = categoryBorder.enter();
+           var d = 60;
+           var svgEnter = categoryBorderEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-category-border').attr('width', d).attr('height', d).attr('viewBox', "0 0 ".concat(d, " ").concat(d));
+           ['fill', 'stroke'].forEach(function (klass) {
+             svgEnter.append('path').attr('class', "area ".concat(klass)).attr('d', 'M9.5,7.5 L25.5,7.5 L28.5,12.5 L49.5,12.5 C51.709139,12.5 53.5,14.290861 53.5,16.5 L53.5,43.5 C53.5,45.709139 51.709139,47.5 49.5,47.5 L10.5,47.5 C8.290861,47.5 6.5,45.709139 6.5,43.5 L6.5,12.5 L9.5,7.5 Z');
+           });
+           categoryBorder = categoryBorderEnter.merge(categoryBorder);

 
 

-           if (!_pointer) {
-             _pointer = {
-               startLoc: loc,
-               startTime: new Date().getTime(),
-               upCount: 0,
-               pointerId: d3_event.pointerId
-             };
-           } else {
-             // double down
-             _pointer.pointerId = d3_event.pointerId;
+           if (category) {
+             var tagClasses = svgTagClasses().getClassesString(category.members.collection[0].addTags, '');
+             categoryBorder.selectAll('path.stroke').attr('class', "area stroke ".concat(tagClasses));
+             categoryBorder.selectAll('path.fill').attr('class', "area fill ".concat(tagClasses));

            }
          }
 
            }
          }
 

-         function pointerup(d3_event) {
-           // ignore right-click
-           if (d3_event.ctrlKey || d3_event.button === 2) return;
-           if (!_pointer || _pointer.pointerId !== d3_event.pointerId) return;
-           _pointer.upCount += 1;
-
-           if (_pointer.upCount === 2) {
-             // double up!
-             var loc = [d3_event.clientX, d3_event.clientY];
-
-             if (pointerIsValidFor(loc)) {
-               var locInThis = utilFastMouse(this)(d3_event);
-               dispatch$1.call('doubleUp', this, d3_event, locInThis);
-             } // clear the pointer info in any case
-
-
-             _pointer = undefined;
-           }
+         function renderCircleFill(container, drawVertex) {
+           var vertexFill = container.selectAll('.preset-icon-fill-vertex').data(drawVertex ? [0] : []);
+           vertexFill.exit().remove();
+           var vertexFillEnter = vertexFill.enter();
+           var w = 60;
+           var h = 60;
+           var d = 40;
+           vertexFillEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-fill-vertex').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h)).append('circle').attr('cx', w / 2).attr('cy', h / 2).attr('r', d / 2);
+           vertexFill = vertexFillEnter.merge(vertexFill);

          }
 
          }
 

-         function doubleUp(selection) {
-           if ('PointerEvent' in window) {
-             // dblclick isn't well supported on touch devices so manually use
-             // pointer events if they're available
-             selection.on('pointerdown.doubleUp', pointerdown).on('pointerup.doubleUp', pointerup);
-           } else {
-             // fallback to dblclick
-             selection.on('dblclick.doubleUp', function (d3_event) {
-               dispatch$1.call('doubleUp', this, d3_event, utilFastMouse(this)(d3_event));
+         function renderSquareFill(container, drawArea, tagClasses) {
+           var fill = container.selectAll('.preset-icon-fill-area').data(drawArea ? [0] : []);
+           fill.exit().remove();
+           var fillEnter = fill.enter();
+           var d = isSmall() ? 40 : 60;
+           var w = d;
+           var h = d;
+           var l = d * 2 / 3;
+           var c1 = (w - l) / 2;
+           var c2 = c1 + l;
+           fillEnter = fillEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-fill-area').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
+           ['fill', 'stroke'].forEach(function (klass) {
+             fillEnter.append('path').attr('d', "M".concat(c1, " ").concat(c1, " L").concat(c1, " ").concat(c2, " L").concat(c2, " ").concat(c2, " L").concat(c2, " ").concat(c1, " Z")).attr('class', "area ".concat(klass));
+           });
+           var rVertex = 2.5;
+           [[c1, c1], [c1, c2], [c2, c2], [c2, c1]].forEach(function (point) {
+             fillEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', rVertex);
+           });
+
+           if (!isSmall()) {
+             var rMidpoint = 1.25;
+             [[c1, w / 2], [c2, w / 2], [h / 2, c1], [h / 2, c2]].forEach(function (point) {
+               fillEnter.append('circle').attr('class', 'midpoint').attr('cx', point[0]).attr('cy', point[1]).attr('r', rMidpoint);

              });
            }
              });
            }

-         }

 
 

-         doubleUp.off = function (selection) {
-           selection.on('pointerdown.doubleUp', null).on('pointerup.doubleUp', null).on('dblclick.doubleUp', null);
-         };
+           fill = fillEnter.merge(fill);
+           fill.selectAll('path.stroke').attr('class', "area stroke ".concat(tagClasses));
+           fill.selectAll('path.fill').attr('class', "area fill ".concat(tagClasses));
+         }

 
 

-         return utilRebind(doubleUp, dispatch$1, 'on');
-       }
+         function renderLine(container, drawLine, tagClasses) {
+           var line = container.selectAll('.preset-icon-line').data(drawLine ? [0] : []);
+           line.exit().remove();
+           var lineEnter = line.enter();
+           var d = isSmall() ? 40 : 60; // draw the line parametrically

 
 

-       var TILESIZE = 256;
-       var minZoom = 2;
-       var maxZoom = 24;
-       var kMin = geoZoomToScale(minZoom, TILESIZE);
-       var kMax = geoZoomToScale(maxZoom, TILESIZE);
+           var w = d;
+           var h = d;
+           var y = Math.round(d * 0.72);
+           var l = Math.round(d * 0.6);
+           var r = 2.5;
+           var x1 = (w - l) / 2;
+           var x2 = x1 + l;
+           lineEnter = lineEnter.append('svg').attr('class', 'preset-icon-line').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
+           ['casing', 'stroke'].forEach(function (klass) {
+             lineEnter.append('path').attr('d', "M".concat(x1, " ").concat(y, " L").concat(x2, " ").concat(y)).attr('class', "line ".concat(klass));
+           });
+           [[x1 - 1, y], [x2 + 1, y]].forEach(function (point) {
+             lineEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', r);
+           });
+           line = lineEnter.merge(line);
+           line.selectAll('path.stroke').attr('class', "line stroke ".concat(tagClasses));
+           line.selectAll('path.casing').attr('class', "line casing ".concat(tagClasses));
+         }

 
 

-       function clamp(num, min, max) {
-         return Math.max(min, Math.min(num, max));
-       }
+         function renderRoute(container, drawRoute, p) {
+           var route = container.selectAll('.preset-icon-route').data(drawRoute ? [0] : []);
+           route.exit().remove();
+           var routeEnter = route.enter();
+           var d = isSmall() ? 40 : 60; // draw the route parametrically

 
 

-       function rendererMap(context) {
-         var dispatch$1 = dispatch('move', 'drawn', 'crossEditableZoom', 'hitMinZoom', 'changeHighlighting', 'changeAreaFill');
-         var projection = context.projection;
-         var curtainProjection = context.curtainProjection;
-         var drawLayers;
-         var drawPoints;
-         var drawVertices;
-         var drawLines;
-         var drawAreas;
-         var drawMidpoints;
-         var drawLabels;
+           var w = d;
+           var h = d;
+           var y1 = Math.round(d * 0.80);
+           var y2 = Math.round(d * 0.68);
+           var l = Math.round(d * 0.6);
+           var r = 2;
+           var x1 = (w - l) / 2;
+           var x2 = x1 + l / 3;
+           var x3 = x2 + l / 3;
+           var x4 = x3 + l / 3;
+           routeEnter = routeEnter.append('svg').attr('class', 'preset-icon-route').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
+           ['casing', 'stroke'].forEach(function (klass) {
+             routeEnter.append('path').attr('d', "M".concat(x1, " ").concat(y1, " L").concat(x2, " ").concat(y2)).attr('class', "segment0 line ".concat(klass));
+             routeEnter.append('path').attr('d', "M".concat(x2, " ").concat(y2, " L").concat(x3, " ").concat(y1)).attr('class', "segment1 line ".concat(klass));
+             routeEnter.append('path').attr('d', "M".concat(x3, " ").concat(y1, " L").concat(x4, " ").concat(y2)).attr('class', "segment2 line ".concat(klass));
+           });
+           [[x1, y1], [x2, y2], [x3, y1], [x4, y2]].forEach(function (point) {
+             routeEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', r);
+           });
+           route = routeEnter.merge(route);

 
 

-         var _selection = select(null);
+           if (drawRoute) {
+             var routeType = p.tags.type === 'waterway' ? 'waterway' : p.tags.route;
+             var segmentPresetIDs = routeSegments[routeType];

 
 

-         var supersurface = select(null);
-         var wrapper = select(null);
-         var surface = select(null);
-         var _dimensions = [1, 1];
-         var _dblClickZoomEnabled = true;
-         var _redrawEnabled = true;
+             for (var i in segmentPresetIDs) {
+               var segmentPreset = _mainPresetIndex.item(segmentPresetIDs[i]);
+               var segmentTagClasses = svgTagClasses().getClassesString(segmentPreset.tags, '');
+               route.selectAll("path.stroke.segment".concat(i)).attr('class', "segment".concat(i, " line stroke ").concat(segmentTagClasses));
+               route.selectAll("path.casing.segment".concat(i)).attr('class', "segment".concat(i, " line casing ").concat(segmentTagClasses));
+             }
+           }
+         }

 
 

-         var _gestureTransformStart;
+         function renderSvgIcon(container, picon, geom, isFramed, category, tagClasses) {
+           var isMaki = picon && /^maki-/.test(picon);
+           var isTemaki = picon && /^temaki-/.test(picon);
+           var isFa = picon && /^fa[srb]-/.test(picon);
+           var isiDIcon = picon && !(isMaki || isTemaki || isFa);
+           var icon = container.selectAll('.preset-icon').data(picon ? [0] : []);
+           icon.exit().remove();
+           icon = icon.enter().append('div').attr('class', 'preset-icon').call(svgIcon('')).merge(icon);
+           icon.attr('class', 'preset-icon ' + (geom ? geom + '-geom' : '')).classed('category', category).classed('framed', isFramed).classed('preset-icon-iD', isiDIcon);
+           icon.selectAll('svg').attr('class', 'icon ' + picon + ' ' + (!isiDIcon && geom !== 'line' ? '' : tagClasses));
+           var suffix = '';

 
 

-         var _transformStart = projection.transform();
+           if (isMaki) {
+             suffix = isSmall() && geom === 'point' ? '-11' : '-15';
+           }

 
 

-         var _transformLast;
+           icon.selectAll('use').attr('href', '#' + picon + suffix);
+         }

 
 

-         var _isTransformed = false;
-         var _minzoom = 0;
+         function renderImageIcon(container, imageURL) {
+           var imageIcon = container.selectAll('img.image-icon').data(imageURL ? [0] : []);
+           imageIcon.exit().remove();
+           imageIcon = imageIcon.enter().append('img').attr('class', 'image-icon').on('load', function () {
+             return container.classed('showing-img', true);
+           }).on('error', function () {
+             return container.classed('showing-img', false);
+           }).merge(imageIcon);
+           imageIcon.attr('src', imageURL);
+         } // Route icons are drawn with a zigzag annotation underneath:
+         //     o   o
+         //    / \ /
+         //   o   o
+         // This dataset defines the styles that are used to draw the zigzag segments.

 
 

-         var _getMouseCoords;

 
 

-         var _lastPointerEvent;
+         var routeSegments = {
+           bicycle: ['highway/cycleway', 'highway/cycleway', 'highway/cycleway'],
+           bus: ['highway/unclassified', 'highway/secondary', 'highway/primary'],
+           trolleybus: ['highway/unclassified', 'highway/secondary', 'highway/primary'],
+           detour: ['highway/tertiary', 'highway/residential', 'highway/unclassified'],
+           ferry: ['route/ferry', 'route/ferry', 'route/ferry'],
+           foot: ['highway/footway', 'highway/footway', 'highway/footway'],
+           hiking: ['highway/path', 'highway/path', 'highway/path'],
+           horse: ['highway/bridleway', 'highway/bridleway', 'highway/bridleway'],
+           light_rail: ['railway/light_rail', 'railway/light_rail', 'railway/light_rail'],
+           monorail: ['railway/monorail', 'railway/monorail', 'railway/monorail'],
+           mtb: ['highway/path', 'highway/track', 'highway/bridleway'],
+           pipeline: ['man_made/pipeline', 'man_made/pipeline', 'man_made/pipeline'],
+           piste: ['piste/downhill', 'piste/hike', 'piste/nordic'],
+           power: ['power/line', 'power/line', 'power/line'],
+           road: ['highway/secondary', 'highway/primary', 'highway/trunk'],
+           subway: ['railway/subway', 'railway/subway', 'railway/subway'],
+           train: ['railway/rail', 'railway/rail', 'railway/rail'],
+           tram: ['railway/tram', 'railway/tram', 'railway/tram'],
+           waterway: ['waterway/stream', 'waterway/stream', 'waterway/stream']
+         };

 
 

-         var _lastWithinEditableZoom; // whether a pointerdown event started the zoom
+         function render() {
+           var p = _preset.apply(this, arguments);

 
 

+           var geom = _geometry ? _geometry.apply(this, arguments) : null;

 
 

-         var _pointerDown = false; // use pointer events on supported platforms; fallback to mouse events
+           if (geom === 'relation' && p.tags && (p.tags.type === 'route' && p.tags.route && routeSegments[p.tags.route] || p.tags.type === 'waterway')) {
+             geom = 'route';
+           }

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // use pointer event interaction if supported; fallback to touch/mouse events in d3-zoom
+           var showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
+           var isFallback = isSmall() && p.isFallback && p.isFallback();
+           var imageURL = showThirdPartyIcons === 'true' && p.imageURL;
+           var picon = getIcon(p, geom);
+           var isCategory = !p.setTags;
+           var drawPoint = picon && geom === 'point' && isSmall() && !isFallback;
+           var drawVertex = picon !== null && geom === 'vertex' && (!isSmall() || !isFallback);
+           var drawLine = picon && geom === 'line' && !isFallback && !isCategory;
+           var drawArea = picon && geom === 'area' && !isFallback && !isCategory;
+           var drawRoute = picon && geom === 'route';
+           var isFramed = drawVertex || drawArea || drawLine || drawRoute || isCategory;
+           var tags = !isCategory ? p.setTags({}, geom) : {};

 
 

+           for (var k in tags) {
+             if (tags[k] === '*') {
+               tags[k] = 'yes';
+             }
+           }

 
 

-         var _zoomerPannerFunction = 'PointerEvent' in window ? utilZoomPan : d3_zoom;
+           var tagClasses = svgTagClasses().getClassesString(tags, '');
+           var selection = select(this);
+           var container = selection.selectAll('.preset-icon-container').data([0]);
+           container = container.enter().append('div').attr('class', "preset-icon-container ".concat(_sizeClass)).merge(container);
+           container.classed('showing-img', !!imageURL).classed('fallback', isFallback);
+           renderCategoryBorder(container, isCategory && p);
+           renderPointBorder(container, drawPoint);
+           renderCircleFill(container, drawVertex);
+           renderSquareFill(container, drawArea, tagClasses);
+           renderLine(container, drawLine, tagClasses);
+           renderRoute(container, drawRoute, p);
+           renderSvgIcon(container, picon, geom, isFramed, isCategory, tagClasses);
+           renderImageIcon(container, imageURL);
+         }

 
 

-         var _zoomerPanner = _zoomerPannerFunction().scaleExtent([kMin, kMax]).interpolate(interpolate).filter(zoomEventFilter).on('zoom.map', zoomPan).on('start.map', function (d3_event) {
-           _pointerDown = d3_event && (d3_event.type === 'pointerdown' || d3_event.sourceEvent && d3_event.sourceEvent.type === 'pointerdown');
-         }).on('end.map', function () {
-           _pointerDown = false;
-         });
+         presetIcon.preset = function (val) {
+           if (!arguments.length) return _preset;
+           _preset = utilFunctor(val);
+           return presetIcon;
+         };

 
 

-         var _doubleUpHandler = utilDoubleUp();
+         presetIcon.geometry = function (val) {
+           if (!arguments.length) return _geometry;
+           _geometry = utilFunctor(val);
+           return presetIcon;
+         };

 
 

-         var scheduleRedraw = throttle(redraw, 750); // var isRedrawScheduled = false;
-         // var pendingRedrawCall;
-         // function scheduleRedraw() {
-         //     // Only schedule the redraw if one has not already been set.
-         //     if (isRedrawScheduled) return;
-         //     isRedrawScheduled = true;
-         //     var that = this;
-         //     var args = arguments;
-         //     pendingRedrawCall = window.requestIdleCallback(function () {
-         //         // Reset the boolean so future redraws can be set.
-         //         isRedrawScheduled = false;
-         //         redraw.apply(that, args);
-         //     }, { timeout: 1400 });
-         // }
+         presetIcon.sizeClass = function (val) {
+           if (!arguments.length) return _sizeClass;
+           _sizeClass = val;
+           return presetIcon;
+         };

 
 

+         return presetIcon;
+       }

 
 

-         function cancelPendingRedraw() {
-           scheduleRedraw.cancel(); // isRedrawScheduled = false;
-           // window.cancelIdleCallback(pendingRedrawCall);
-         }
+       function uiSectionFeatureType(context) {
+         var dispatch = dispatch$8('choose');
+         var _entityIDs = [];
+         var _presets = [];

 
 

-         function map(selection) {
-           _selection = selection;
-           context.on('change.map', immediateRedraw);
-           var osm = context.connection();
+         var _tagReference;

 
 

-           if (osm) {
-             osm.on('change.map', immediateRedraw);
-           }
+         var section = uiSection('feature-type', context).label(_t.html('inspector.feature_type')).disclosureContent(renderDisclosureContent);

 
 

-           function didUndoOrRedo(targetTransform) {
-             var mode = context.mode().id;
-             if (mode !== 'browse' && mode !== 'select') return;
+         function renderDisclosureContent(selection) {
+           selection.classed('preset-list-item', true);
+           selection.classed('mixed-types', _presets.length > 1);
+           var presetButtonWrap = selection.selectAll('.preset-list-button-wrap').data([0]).enter().append('div').attr('class', 'preset-list-button-wrap');
+           var presetButton = presetButtonWrap.append('button').attr('class', 'preset-list-button preset-reset').call(uiTooltip().title(_t.html('inspector.back_tooltip')).placement('bottom'));
+           presetButton.append('div').attr('class', 'preset-icon-container');
+           presetButton.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
+           presetButtonWrap.append('div').attr('class', 'accessory-buttons');
+           var tagReferenceBodyWrap = selection.selectAll('.tag-reference-body-wrap').data([0]);
+           tagReferenceBodyWrap = tagReferenceBodyWrap.enter().append('div').attr('class', 'tag-reference-body-wrap').merge(tagReferenceBodyWrap); // update header

 
 

-             if (targetTransform) {
-               map.transformEase(targetTransform);
-             }
+           if (_tagReference) {
+             selection.selectAll('.preset-list-button-wrap .accessory-buttons').style('display', _presets.length === 1 ? null : 'none').call(_tagReference.button);
+             tagReferenceBodyWrap.style('display', _presets.length === 1 ? null : 'none').call(_tagReference.body);

            }
 
            }
 

-           context.history().on('merge.map', function () {
-             scheduleRedraw();
-           }).on('change.map', immediateRedraw).on('undone.map', function (stack, fromStack) {
-             didUndoOrRedo(fromStack.transform);
-           }).on('redone.map', function (stack) {
-             didUndoOrRedo(stack.transform);
+           selection.selectAll('.preset-reset').on('click', function () {
+             dispatch.call('choose', this, _presets);
+           }).on('pointerdown pointerup mousedown mouseup', function (d3_event) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation();

            });
            });

-           context.background().on('change.map', immediateRedraw);
-           context.features().on('redraw.map', immediateRedraw);
-           drawLayers.on('change.map', function () {
-             context.background().updateImagery();
-             immediateRedraw();
+           var geometries = entityGeometries();
+           selection.select('.preset-list-item button').call(uiPresetIcon().geometry(_presets.length === 1 ? geometries.length === 1 && geometries[0] : null).preset(_presets.length === 1 ? _presets[0] : _mainPresetIndex.item('point')));
+           var names = _presets.length === 1 ? [_presets[0].nameLabel(), _presets[0].subtitleLabel()].filter(Boolean) : [_t('inspector.multiple_types')];
+           var label = selection.select('.label-inner');
+           var nameparts = label.selectAll('.namepart').data(names, function (d) {
+             return d;

            });
            });

-           selection.on('wheel.map mousewheel.map', function (d3_event) {
-             // disable swipe-to-navigate browser pages on trackpad/magic mouse – #5552
-             d3_event.preventDefault();
-           }).call(_zoomerPanner).call(_zoomerPanner.transform, projection.transform()).on('dblclick.zoom', null); // override d3-zoom dblclick handling
-
-           map.supersurface = supersurface = selection.append('div').attr('class', 'supersurface').call(utilSetTransform, 0, 0); // Need a wrapper div because Opera can't cope with an absolutely positioned
-           // SVG element: http://bl.ocks.org/jfirebaugh/6fbfbd922552bf776c16
-
-           wrapper = supersurface.append('div').attr('class', 'layer layer-data');
-           map.surface = surface = wrapper.call(drawLayers).selectAll('.surface');
-           surface.call(drawLabels.observe).call(_doubleUpHandler).on(_pointerPrefix + 'down.zoom', function (d3_event) {
-             _lastPointerEvent = d3_event;
-
-             if (d3_event.button === 2) {
-               d3_event.stopPropagation();
-             }
-           }, true).on(_pointerPrefix + 'up.zoom', function (d3_event) {
-             _lastPointerEvent = d3_event;
-
-             if (resetTransform()) {
-               immediateRedraw();
-             }
-           }).on(_pointerPrefix + 'move.map', function (d3_event) {
-             _lastPointerEvent = d3_event;
-           }).on(_pointerPrefix + 'over.vertices', function (d3_event) {
-             if (map.editableDataEnabled() && !_isTransformed) {
-               var hover = d3_event.target.__data__;
-               surface.call(drawVertices.drawHover, context.graph(), hover, map.extent());
-               dispatch$1.call('drawn', this, {
-                 full: false
-               });
-             }
-           }).on(_pointerPrefix + 'out.vertices', function (d3_event) {
-             if (map.editableDataEnabled() && !_isTransformed) {
-               var hover = d3_event.relatedTarget && d3_event.relatedTarget.__data__;
-               surface.call(drawVertices.drawHover, context.graph(), hover, map.extent());
-               dispatch$1.call('drawn', this, {
-                 full: false
-               });
-             }
+           nameparts.exit().remove();
+           nameparts.enter().append('div').attr('class', 'namepart').html(function (d) {
+             return d;

            });
            });

-           var detected = utilDetect(); // only WebKit supports gesture events
-
-           if ('GestureEvent' in window && // Listening for gesture events on iOS 13.4+ breaks double-tapping,
-           // but we only need to do this on desktop Safari anyway. – #7694
-           !detected.isMobileWebKit) {
-             // Desktop Safari sends gesture events for multitouch trackpad pinches.
-             // We can listen for these and translate them into map zooms.
-             surface.on('gesturestart.surface', function (d3_event) {
-               d3_event.preventDefault();
-               _gestureTransformStart = projection.transform();
-             }).on('gesturechange.surface', gestureChange);
-           } // must call after surface init
-
-
-           updateAreaFill();
-
-           _doubleUpHandler.on('doubleUp.map', function (d3_event, p0) {
-             if (!_dblClickZoomEnabled) return; // don't zoom if targeting something other than the map itself
+         }

 
 

-             if (_typeof(d3_event.target.__data__) === 'object' && // or area fills
-             !select(d3_event.target).classed('fill')) return;
-             var zoomOut = d3_event.shiftKey;
-             var t = projection.transform();
-             var p1 = t.invert(p0);
-             t = t.scale(zoomOut ? 0.5 : 2);
-             t.x = p0[0] - p1[0] * t.k;
-             t.y = p0[1] - p1[1] * t.k;
-             map.transformEase(t);
-           });
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return section;
+         };

 
 

-           context.on('enter.map', function () {
-             if (!map.editableDataEnabled(true
-             /* skip zoom check */
-             )) return; // redraw immediately any objects affected by a change in selectedIDs.
+         section.presets = function (val) {
+           if (!arguments.length) return _presets; // don't reload the same preset

 
 

-             var graph = context.graph();
-             var selectedAndParents = {};
-             context.selectedIDs().forEach(function (id) {
-               var entity = graph.hasEntity(id);
+           if (!utilArrayIdentical(val, _presets)) {
+             _presets = val;

 
 

-               if (entity) {
-                 selectedAndParents[entity.id] = entity;
+             if (_presets.length === 1) {
+               _tagReference = uiTagReference(_presets[0].reference()).showing(false);
+             }
+           }

 
 

-                 if (entity.type === 'node') {
-                   graph.parentWays(entity).forEach(function (parent) {
-                     selectedAndParents[parent.id] = parent;
-                   });
-                 }
-               }
-             });
-             var data = Object.values(selectedAndParents);
+           return section;
+         };

 
 

-             var filter = function filter(d) {
-               return d.id in selectedAndParents;
-             };
+         function entityGeometries() {
+           var counts = {};

 
 

-             data = context.features().filter(data, graph);
-             surface.call(drawVertices.drawSelected, graph, map.extent()).call(drawLines, graph, data, filter).call(drawAreas, graph, data, filter).call(drawMidpoints, graph, data, filter, map.trimmedExtent());
-             dispatch$1.call('drawn', this, {
-               full: false
-             }); // redraw everything else later
+           for (var i in _entityIDs) {
+             var geometry = context.graph().geometry(_entityIDs[i]);
+             if (!counts[geometry]) counts[geometry] = 0;
+             counts[geometry] += 1;
+           }

 
 

-             scheduleRedraw();
+           return Object.keys(counts).sort(function (geom1, geom2) {
+             return counts[geom2] - counts[geom1];

            });
            });

-           map.dimensions(utilGetDimensions(selection));

          }
 
          }
 

-         function zoomEventFilter(d3_event) {
-           // Fix for #2151, (see also d3/d3-zoom#60, d3/d3-brush#18)
-           // Intercept `mousedown` and check if there is an orphaned zoom gesture.
-           // This can happen if a previous `mousedown` occurred without a `mouseup`.
-           // If we detect this, dispatch `mouseup` to complete the orphaned gesture,
-           // so that d3-zoom won't stop propagation of new `mousedown` events.
-           if (d3_event.type === 'mousedown') {
-             var hasOrphan = false;
-             var listeners = window.__on;
+         return utilRebind(section, dispatch, 'on');
+       }

 
 

-             for (var i = 0; i < listeners.length; i++) {
-               var listener = listeners[i];
+       // It borrows some code from uiHelp

 
 

-               if (listener.name === 'zoom' && listener.type === 'mouseup') {
-                 hasOrphan = true;
-                 break;
-               }
-             }
+       function uiFieldHelp(context, fieldName) {
+         var fieldHelp = {};

 
 

-             if (hasOrphan) {
-               var event = window.CustomEvent;
+         var _inspector = select(null);

 
 

-               if (event) {
-                 event = new event('mouseup');
-               } else {
-                 event = window.document.createEvent('Event');
-                 event.initEvent('mouseup', false, false);
-               } // Event needs to be dispatched with an event.view property.
+         var _wrap = select(null);

 
 

+         var _body = select(null);

 
 

-               event.view = window;
-               window.dispatchEvent(event);
-             }
-           }
+         var fieldHelpKeys = {
+           restrictions: [['about', ['about', 'from_via_to', 'maxdist', 'maxvia']], ['inspecting', ['about', 'from_shadow', 'allow_shadow', 'restrict_shadow', 'only_shadow', 'restricted', 'only']], ['modifying', ['about', 'indicators', 'allow_turn', 'restrict_turn', 'only_turn']], ['tips', ['simple', 'simple_example', 'indirect', 'indirect_example', 'indirect_noedit']]]
+         };
+         var fieldHelpHeadings = {};
+         var replacements = {
+           distField: _t.html('restriction.controls.distance'),
+           viaField: _t.html('restriction.controls.via'),
+           fromShadow: icon('#iD-turn-shadow', 'inline shadow from'),
+           allowShadow: icon('#iD-turn-shadow', 'inline shadow allow'),
+           restrictShadow: icon('#iD-turn-shadow', 'inline shadow restrict'),
+           onlyShadow: icon('#iD-turn-shadow', 'inline shadow only'),
+           allowTurn: icon('#iD-turn-yes', 'inline turn'),
+           restrictTurn: icon('#iD-turn-no', 'inline turn'),
+           onlyTurn: icon('#iD-turn-only', 'inline turn')
+         }; // For each section, squash all the texts into a single markdown document

 
 

-           return d3_event.button !== 2; // ignore right clicks
-         }
+         var docs = fieldHelpKeys[fieldName].map(function (key) {
+           var helpkey = 'help.field.' + fieldName + '.' + key[0];
+           var text = key[1].reduce(function (all, part) {
+             var subkey = helpkey + '.' + part;
+             var depth = fieldHelpHeadings[subkey]; // is this subkey a heading?

 
 

-         function pxCenter() {
-           return [_dimensions[0] / 2, _dimensions[1] / 2];
+             var hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s
+
+             return all + hhh + _t.html(subkey, replacements) + '\n\n';
+           }, '');
+           return {
+             key: helpkey,
+             title: _t.html(helpkey + '.title'),
+             html: marked_1(text.trim())
+           };
+         });
+
+         function show() {
+           updatePosition();
+
+           _body.classed('hide', false).style('opacity', '0').transition().duration(200).style('opacity', '1');

          }
 
          }
 

-         function drawEditable(difference, extent) {
-           var mode = context.mode();
-           var graph = context.graph();
-           var features = context.features();
-           var all = context.history().intersects(map.extent());
-           var fullRedraw = false;
-           var data;
-           var set;
-           var filter;
-           var applyFeatureLayerFilters = true;
+         function hide() {
+           _body.classed('hide', true).transition().duration(200).style('opacity', '0').on('end', function () {
+             _body.classed('hide', true);
+           });
+         }

 
 

-           if (map.isInWideSelection()) {
-             data = [];
-             utilEntityAndDeepMemberIDs(mode.selectedIDs(), context.graph()).forEach(function (id) {
-               var entity = context.hasEntity(id);
-               if (entity) data.push(entity);
-             });
-             fullRedraw = true;
-             filter = utilFunctor(true); // selected features should always be visible, so we can skip filtering
+         function clickHelp(index) {
+           var d = docs[index];
+           var tkeys = fieldHelpKeys[fieldName][index][1];

 
 

-             applyFeatureLayerFilters = false;
-           } else if (difference) {
-             var complete = difference.complete(map.extent());
-             data = Object.values(complete).filter(Boolean);
-             set = new Set(Object.keys(complete));
+           _body.selectAll('.field-help-nav-item').classed('active', function (d, i) {
+             return i === index;
+           });

 
 

-             filter = function filter(d) {
-               return set.has(d.id);
-             };
+           var content = _body.selectAll('.field-help-content').html(d.html); // class the paragraphs so we can find and style them

 
 

-             features.clear(data);
-           } else {
-             // force a full redraw if gatherStats detects that a feature
-             // should be auto-hidden (e.g. points or buildings)..
-             if (features.gatherStats(all, graph, _dimensions)) {
-               extent = undefined;
-             }

 
 

-             if (extent) {
-               data = context.history().intersects(map.extent().intersection(extent));
-               set = new Set(data.map(function (entity) {
-                 return entity.id;
-               }));
+           content.selectAll('p').attr('class', function (d, i) {
+             return tkeys[i];
+           }); // insert special content for certain help sections

 
 

-               filter = function filter(d) {
-                 return set.has(d.id);
-               };
-             } else {
-               data = all;
-               fullRedraw = true;
-               filter = utilFunctor(true);
-             }
+           if (d.key === 'help.field.restrictions.inspecting') {
+             content.insert('img', 'p.from_shadow').attr('class', 'field-help-image cf').attr('src', context.imagePath('tr_inspect.gif'));
+           } else if (d.key === 'help.field.restrictions.modifying') {
+             content.insert('img', 'p.allow_turn').attr('class', 'field-help-image cf').attr('src', context.imagePath('tr_modify.gif'));

            }
            }

+         }

 
 

-           if (applyFeatureLayerFilters) {
-             data = features.filter(data, graph);
-           } else {
-             context.features().resetStats();
-           }
+         fieldHelp.button = function (selection) {
+           if (_body.empty()) return;
+           var button = selection.selectAll('.field-help-button').data([0]); // enter/update

 
 

-           if (mode && mode.id === 'select') {
-             // update selected vertices - the user might have just double-clicked a way,
-             // creating a new vertex, triggering a partial redraw without a mode change
-             surface.call(drawVertices.drawSelected, graph, map.extent());
-           }
+           button.enter().append('button').attr('class', 'field-help-button').call(svgIcon('#iD-icon-help')).merge(button).on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();

 
 

-           surface.call(drawVertices, graph, data, filter, map.extent(), fullRedraw).call(drawLines, graph, data, filter).call(drawAreas, graph, data, filter).call(drawMidpoints, graph, data, filter, map.trimmedExtent()).call(drawLabels, graph, data, filter, _dimensions, fullRedraw).call(drawPoints, graph, data, filter);
-           dispatch$1.call('drawn', this, {
-             full: true
+             if (_body.classed('hide')) {
+               show();
+             } else {
+               hide();
+             }

            });
            });

-         }
-
-         map.init = function () {
-           drawLayers = svgLayers(projection, context);
-           drawPoints = svgPoints(projection, context);
-           drawVertices = svgVertices(projection, context);
-           drawLines = svgLines(projection, context);
-           drawAreas = svgAreas(projection, context);
-           drawMidpoints = svgMidpoints(projection, context);
-           drawLabels = svgLabels(projection, context);

          };
 
          };
 

-         function editOff() {
-           context.features().resetStats();
-           surface.selectAll('.layer-osm *').remove();
-           surface.selectAll('.layer-touch:not(.markers) *').remove();
-           var allowed = {
-             'browse': true,
-             'save': true,
-             'select-note': true,
-             'select-data': true,
-             'select-error': true
-           };
-           var mode = context.mode();
+         function updatePosition() {
+           var wrap = _wrap.node();

 
 

-           if (mode && !allowed[mode.id]) {
-             context.enter(modeBrowse(context));
-           }
+           var inspector = _inspector.node();

 
 

-           dispatch$1.call('drawn', this, {
-             full: true
-           });
+           var wRect = wrap.getBoundingClientRect();
+           var iRect = inspector.getBoundingClientRect();
+
+           _body.style('top', wRect.top + inspector.scrollTop - iRect.top + 'px');

          }
 
          }
 

-         function gestureChange(d3_event) {
-           // Remap Safari gesture events to wheel events - #5492
-           // We want these disabled most places, but enabled for zoom/unzoom on map surface
-           // https://developer.mozilla.org/en-US/docs/Web/API/GestureEvent
-           var e = d3_event;
-           e.preventDefault();
-           var props = {
-             deltaMode: 0,
-             // dummy values to ignore in zoomPan
-             deltaY: 1,
-             // dummy values to ignore in zoomPan
-             clientX: e.clientX,
-             clientY: e.clientY,
-             screenX: e.screenX,
-             screenY: e.screenY,
-             x: e.x,
-             y: e.y
-           };
-           var e2 = new WheelEvent('wheel', props);
-           e2._scale = e.scale; // preserve the original scale
+         fieldHelp.body = function (selection) {
+           // This control expects the field to have a form-field-input-wrap div
+           _wrap = selection.selectAll('.form-field-input-wrap');
+           if (_wrap.empty()) return; // absolute position relative to the inspector, so it "floats" above the fields

 
 

-           e2._rotation = e.rotation; // preserve the original rotation
+           _inspector = context.container().select('.sidebar .entity-editor-pane .inspector-body');
+           if (_inspector.empty()) return;
+           _body = _inspector.selectAll('.field-help-body').data([0]);

 
 

-           _selection.node().dispatchEvent(e2);
-         }
+           var enter = _body.enter().append('div').attr('class', 'field-help-body hide'); // initially hidden

 
 

-         function zoomPan(event, key, transform) {
-           var source = event && event.sourceEvent || event;
-           var eventTransform = transform || event && event.transform;
-           var x = eventTransform.x;
-           var y = eventTransform.y;
-           var k = eventTransform.k; // Special handling of 'wheel' events:
-           // They might be triggered by the user scrolling the mouse wheel,
-           // or 2-finger pinch/zoom gestures, the transform may need adjustment.

 
 

-           if (source && source.type === 'wheel') {
-             // assume that the gesture is already handled by pointer events
-             if (_pointerDown) return;
-             var detected = utilDetect();
-             var dX = source.deltaX;
-             var dY = source.deltaY;
-             var x2 = x;
-             var y2 = y;
-             var k2 = k;
-             var t0, p0, p1; // Normalize mousewheel scroll speed (Firefox) - #3029
-             // If wheel delta is provided in LINE units, recalculate it in PIXEL units
-             // We are essentially redoing the calculations that occur here:
-             //   https://github.com/d3/d3-zoom/blob/78563a8348aa4133b07cac92e2595c2227ca7cd7/src/zoom.js#L203
-             // See this for more info:
-             //   https://github.com/basilfx/normalize-wheel/blob/master/src/normalizeWheel.js
+           var titleEnter = enter.append('div').attr('class', 'field-help-title cf');
+           titleEnter.append('h2').attr('class', _mainLocalizer.textDirection() === 'rtl' ? 'fr' : 'fl').html(_t.html('help.field.' + fieldName + '.title'));
+           titleEnter.append('button').attr('class', 'fr close').on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             hide();
+           }).call(svgIcon('#iD-icon-close'));
+           var navEnter = enter.append('div').attr('class', 'field-help-nav cf');
+           var titles = docs.map(function (d) {
+             return d.title;
+           });
+           navEnter.selectAll('.field-help-nav-item').data(titles).enter().append('div').attr('class', 'field-help-nav-item').html(function (d) {
+             return d;
+           }).on('click', function (d3_event, d) {
+             d3_event.stopPropagation();
+             d3_event.preventDefault();
+             clickHelp(titles.indexOf(d));
+           });
+           enter.append('div').attr('class', 'field-help-content');
+           _body = _body.merge(enter);
+           clickHelp(0);
+         };

 
 

-             if (source.deltaMode === 1
-             /* LINE */
-             ) {
-                 // Convert from lines to pixels, more if the user is scrolling fast.
-                 // (I made up the exp function to roughly match Firefox to what Chrome does)
-                 // These numbers should be floats, because integers are treated as pan gesture below.
-                 var lines = Math.abs(source.deltaY);
-                 var sign = source.deltaY > 0 ? 1 : -1;
-                 dY = sign * clamp(Math.exp((lines - 1) * 0.75) * 4.000244140625, 4.000244140625, // min
-                 350.000244140625 // max
-                 ); // On Firefox Windows and Linux we always get +/- the scroll line amount (default 3)
-                 // There doesn't seem to be any scroll acceleration.
-                 // This multiplier increases the speed a little bit - #5512
+         return fieldHelp;
+       }

 
 

-                 if (detected.os !== 'mac') {
-                   dY *= 5;
-                 } // recalculate x2,y2,k2
+       function uiFieldCheck(field, context) {
+         var dispatch = dispatch$8('change');
+         var options = field.options;
+         var values = [];
+         var texts = [];

 
 

+         var _tags;

 
 

-                 t0 = _isTransformed ? _transformLast : _transformStart;
-                 p0 = _getMouseCoords(source);
-                 p1 = t0.invert(p0);
-                 k2 = t0.k * Math.pow(2, -dY / 500);
-                 k2 = clamp(k2, kMin, kMax);
-                 x2 = p0[0] - p1[0] * k2;
-                 y2 = p0[1] - p1[1] * k2; // 2 finger map pinch zooming (Safari) - #5492
-                 // These are fake `wheel` events we made from Safari `gesturechange` events..
-               } else if (source._scale) {
-               // recalculate x2,y2,k2
-               t0 = _gestureTransformStart;
-               p0 = _getMouseCoords(source);
-               p1 = t0.invert(p0);
-               k2 = t0.k * source._scale;
-               k2 = clamp(k2, kMin, kMax);
-               x2 = p0[0] - p1[0] * k2;
-               y2 = p0[1] - p1[1] * k2; // 2 finger map pinch zooming (all browsers except Safari) - #5492
-               // Pinch zooming via the `wheel` event will always have:
-               // - `ctrlKey = true`
-               // - `deltaY` is not round integer pixels (ignore `deltaX`)
-             } else if (source.ctrlKey && !isInteger(dY)) {
-               dY *= 6; // slightly scale up whatever the browser gave us
-               // recalculate x2,y2,k2
+         var input = select(null);
+         var text = select(null);
+         var label = select(null);
+         var reverser = select(null);

 
 

-               t0 = _isTransformed ? _transformLast : _transformStart;
-               p0 = _getMouseCoords(source);
-               p1 = t0.invert(p0);
-               k2 = t0.k * Math.pow(2, -dY / 500);
-               k2 = clamp(k2, kMin, kMax);
-               x2 = p0[0] - p1[0] * k2;
-               y2 = p0[1] - p1[1] * k2; // Trackpad scroll zooming with shift or alt/option key down
-             } else if ((source.altKey || source.shiftKey) && isInteger(dY)) {
-               // recalculate x2,y2,k2
-               t0 = _isTransformed ? _transformLast : _transformStart;
-               p0 = _getMouseCoords(source);
-               p1 = t0.invert(p0);
-               k2 = t0.k * Math.pow(2, -dY / 500);
-               k2 = clamp(k2, kMin, kMax);
-               x2 = p0[0] - p1[0] * k2;
-               y2 = p0[1] - p1[1] * k2; // 2 finger map panning (Mac only, all browsers) - #5492, #5512
-               // Panning via the `wheel` event will always have:
-               // - `ctrlKey = false`
-               // - `deltaX`,`deltaY` are round integer pixels
-             } else if (detected.os === 'mac' && !source.ctrlKey && isInteger(dX) && isInteger(dY)) {
-               p1 = projection.translate();
-               x2 = p1[0] - dX;
-               y2 = p1[1] - dY;
-               k2 = projection.scale();
-               k2 = clamp(k2, kMin, kMax);
-             } // something changed - replace the event transform
+         var _impliedYes;

 
 

+         var _entityIDs = [];

 
 

-             if (x2 !== x || y2 !== y || k2 !== k) {
-               x = x2;
-               y = y2;
-               k = k2;
-               eventTransform = identity$2.translate(x2, y2).scale(k2);
+         var _value;

 
 

-               if (_zoomerPanner._transform) {
-                 // utilZoomPan interface
-                 _zoomerPanner._transform(eventTransform);
-               } else {
-                 // d3_zoom interface
-                 _selection.node().__zoom = eventTransform;
-               }
-             }
+         if (options) {
+           for (var i in options) {
+             var v = options[i];
+             values.push(v === 'undefined' ? undefined : v);
+             texts.push(field.t.html('options.' + v, {
+               'default': v
+             }));

            }
            }

+         } else {
+           values = [undefined, 'yes'];
+           texts = [_t.html('inspector.unknown'), _t.html('inspector.check.yes')];

 
 

-           if (_transformStart.x === x && _transformStart.y === y && _transformStart.k === k) {
-             return; // no change
+           if (field.type !== 'defaultCheck') {
+             values.push('no');
+             texts.push(_t.html('inspector.check.no'));

            }
            }

+         } // Checks tags to see whether an undefined value is "Assumed to be Yes"

 
 

-           var withinEditableZoom = map.withinEditableZoom();

 
 

-           if (_lastWithinEditableZoom !== withinEditableZoom) {
-             if (_lastWithinEditableZoom !== undefined) {
-               // notify that the map zoomed in or out over the editable zoom threshold
-               dispatch$1.call('crossEditableZoom', this, withinEditableZoom);
-             }
+         function checkImpliedYes() {
+           _impliedYes = field.id === 'oneway_yes'; // hack: pretend `oneway` field is a `oneway_yes` field
+           // where implied oneway tag exists (e.g. `junction=roundabout`) #2220, #1841

 
 

-             _lastWithinEditableZoom = withinEditableZoom;
-           }
+           if (field.id === 'oneway') {
+             var entity = context.entity(_entityIDs[0]);

 
 

-           if (geoScaleToZoom(k, TILESIZE) < _minzoom) {
-             surface.interrupt();
-             dispatch$1.call('hitMinZoom', this, map);
-             setCenterZoom(map.center(), context.minEditableZoom(), 0, true);
-             scheduleRedraw();
-             dispatch$1.call('move', this, map);
-             return;
+             for (var key in entity.tags) {
+               if (key in osmOneWayTags && entity.tags[key] in osmOneWayTags[key]) {
+                 _impliedYes = true;
+                 texts[0] = _t.html('_tagging.presets.fields.oneway_yes.options.undefined');
+                 break;
+               }
+             }

            }
            }

+         }

 
 

-           projection.transform(eventTransform);
-           var scale = k / _transformStart.k;
-           var tX = (x / scale - _transformStart.x) * scale;
-           var tY = (y / scale - _transformStart.y) * scale;
-
-           if (context.inIntro()) {
-             curtainProjection.transform({
-               x: x - tX,
-               y: y - tY,
-               k: k
-             });
-           }
+         function reverserHidden() {
+           if (!context.container().select('div.inspector-hover').empty()) return true;
+           return !(_value === 'yes' || _impliedYes && !_value);
+         }

 
 

-           if (source) {
-             _lastPointerEvent = event;
-           }
+         function reverserSetText(selection) {
+           var entity = _entityIDs.length && context.hasEntity(_entityIDs[0]);
+           if (reverserHidden() || !entity) return selection;
+           var first = entity.first();
+           var last = entity.isClosed() ? entity.nodes[entity.nodes.length - 2] : entity.last();
+           var pseudoDirection = first < last;
+           var icon = pseudoDirection ? '#iD-icon-forward' : '#iD-icon-backward';
+           selection.selectAll('.reverser-span').html(_t.html('inspector.check.reverser')).call(svgIcon(icon, 'inline'));
+           return selection;
+         }

 
 

-           _isTransformed = true;
-           _transformLast = eventTransform;
-           utilSetTransform(supersurface, tX, tY, scale);
-           scheduleRedraw();
-           dispatch$1.call('move', this, map);
+         var check = function check(selection) {
+           checkImpliedYes();
+           label = selection.selectAll('.form-field-input-wrap').data([0]);
+           var enter = label.enter().append('label').attr('class', 'form-field-input-wrap form-field-input-check');
+           enter.append('input').property('indeterminate', field.type !== 'defaultCheck').attr('type', 'checkbox').attr('id', field.domId);
+           enter.append('span').html(texts[0]).attr('class', 'value');

 
 

-           function isInteger(val) {
-             return typeof val === 'number' && isFinite(val) && Math.floor(val) === val;
+           if (field.type === 'onewayCheck') {
+             enter.append('button').attr('class', 'reverser' + (reverserHidden() ? ' hide' : '')).append('span').attr('class', 'reverser-span');

            }
            }

-         }

 
 

-         function resetTransform() {
-           if (!_isTransformed) return false;
-           utilSetTransform(supersurface, 0, 0);
-           _isTransformed = false;
+           label = label.merge(enter);
+           input = label.selectAll('input');
+           text = label.selectAll('span.value');
+           input.on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             var t = {};

 
 

-           if (context.inIntro()) {
-             curtainProjection.transform(projection.transform());
-           }
+             if (Array.isArray(_tags[field.key])) {
+               if (values.indexOf('yes') !== -1) {
+                 t[field.key] = 'yes';
+               } else {
+                 t[field.key] = values[0];
+               }
+             } else {
+               t[field.key] = values[(values.indexOf(_value) + 1) % values.length];
+             } // Don't cycle through `alternating` or `reversible` states - #4970
+             // (They are supported as translated strings, but should not toggle with clicks)

 
 

-           return true;
-         }

 
 

-         function redraw(difference, extent) {
-           if (surface.empty() || !_redrawEnabled) return; // If we are in the middle of a zoom/pan, we can't do differenced redraws.
-           // It would result in artifacts where differenced entities are redrawn with
-           // one transform and unchanged entities with another.
+             if (t[field.key] === 'reversible' || t[field.key] === 'alternating') {
+               t[field.key] = values[0];
+             }

 
 

-           if (resetTransform()) {
-             difference = extent = undefined;
-           }
+             dispatch.call('change', this, t);
+           });

 
 

-           var zoom = map.zoom();
-           var z = String(~~zoom);
+           if (field.type === 'onewayCheck') {
+             reverser = label.selectAll('.reverser');
+             reverser.call(reverserSetText).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               context.perform(function (graph) {
+                 for (var i in _entityIDs) {
+                   graph = actionReverse(_entityIDs[i])(graph);
+                 }

 
 

-           if (surface.attr('data-zoom') !== z) {
-             surface.attr('data-zoom', z);
-           } // class surface as `lowzoom` around z17-z18.5 (based on latitude)
+                 return graph;
+               }, _t('operations.reverse.annotation.line', {
+                 n: 1
+               })); // must manually revalidate since no 'change' event was called

 
 

+               context.validator().validate();
+               select(this).call(reverserSetText);
+             });
+           }
+         };

 
 

-           var lat = map.center()[1];
-           var lowzoom = linear$2().domain([-60, 0, 60]).range([17, 18.5, 17]).clamp(true);
-           surface.classed('low-zoom', zoom <= lowzoom(lat));
+         check.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return check;
+         };
+
+         check.tags = function (tags) {
+           _tags = tags;

 
 

-           if (!difference) {
-             supersurface.call(context.background());
-             wrapper.call(drawLayers);
-           } // OSM
+           function isChecked(val) {
+             return val !== 'no' && val !== '' && val !== undefined && val !== null;
+           }

 
 

+           function textFor(val) {
+             if (val === '') val = undefined;
+             var index = values.indexOf(val);
+             return index !== -1 ? texts[index] : '"' + val + '"';
+           }

 
 

-           if (map.editableDataEnabled() || map.isInWideSelection()) {
-             context.loadTiles(projection);
-             drawEditable(difference, extent);
-           } else {
-             editOff();
+           checkImpliedYes();
+           var isMixed = Array.isArray(tags[field.key]);
+           _value = !isMixed && tags[field.key] && tags[field.key].toLowerCase();
+
+           if (field.type === 'onewayCheck' && (_value === '1' || _value === '-1')) {
+             _value = 'yes';

            }
 
            }
 

-           _transformStart = projection.transform();
-           return map;
-         }
+           input.property('indeterminate', isMixed || field.type !== 'defaultCheck' && !_value).property('checked', isChecked(_value));
+           text.html(isMixed ? _t.html('inspector.multiple_values') : textFor(_value)).classed('mixed', isMixed);
+           label.classed('set', !!_value);

 
 

-         var immediateRedraw = function immediateRedraw(difference, extent) {
-           if (!difference && !extent) cancelPendingRedraw();
-           redraw(difference, extent);
+           if (field.type === 'onewayCheck') {
+             reverser.classed('hide', reverserHidden()).call(reverserSetText);
+           }

          };
 
          };
 

-         map.lastPointerEvent = function () {
-           return _lastPointerEvent;
+         check.focus = function () {
+           input.node().focus();

          };
 
          };
 

-         map.mouse = function (d3_event) {
-           var event = _lastPointerEvent || d3_event;
+         return utilRebind(check, dispatch, 'on');
+       }

 
 

-           if (event) {
-             var s;
+       function uiFieldCombo(field, context) {
+         var dispatch = dispatch$8('change');

 
 

-             while (s = event.sourceEvent) {
-               event = s;
-             }
+         var _isMulti = field.type === 'multiCombo' || field.type === 'manyCombo';

 
 

-             return _getMouseCoords(event);
-           }
+         var _isNetwork = field.type === 'networkCombo';

 
 

-           return null;
-         }; // returns Lng/Lat
+         var _isSemi = field.type === 'semiCombo';

 
 

+         var _optarray = field.options;

 
 

-         map.mouseCoordinates = function () {
-           var coord = map.mouse() || pxCenter();
-           return projection.invert(coord);
-         };
+         var _showTagInfoSuggestions = field.type !== 'manyCombo' && field.autoSuggestions !== false;

 
 

-         map.dblclickZoomEnable = function (val) {
-           if (!arguments.length) return _dblClickZoomEnabled;
-           _dblClickZoomEnabled = val;
-           return map;
-         };
+         var _allowCustomValues = field.type !== 'manyCombo' && field.customValues !== false;

 
 

-         map.redrawEnable = function (val) {
-           if (!arguments.length) return _redrawEnabled;
-           _redrawEnabled = val;
-           return map;
-         };
+         var _snake_case = field.snake_case || field.snake_case === undefined;

 
 

-         map.isTransformed = function () {
-           return _isTransformed;
-         };
+         var _combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(field.caseSensitive).minItems(_isMulti || _isSemi ? 1 : 2);

 
 

-         function setTransform(t2, duration, force) {
-           var t = projection.transform();
-           if (!force && t2.k === t.k && t2.x === t.x && t2.y === t.y) return false;
+         var _container = select(null);

 
 

-           if (duration) {
-             _selection.transition().duration(duration).on('start', function () {
-               map.startEase();
-             }).call(_zoomerPanner.transform, identity$2.translate(t2.x, t2.y).scale(t2.k));
-           } else {
-             projection.transform(t2);
-             _transformStart = t2;
+         var _inputWrap = select(null);

 
 

-             _selection.call(_zoomerPanner.transform, _transformStart);
-           }
+         var _input = select(null);

 
 

-           return true;
-         }
+         var _comboData = [];
+         var _multiData = [];
+         var _entityIDs = [];

 
 

-         function setCenterZoom(loc2, z2, duration, force) {
-           var c = map.center();
-           var z = map.zoom();
-           if (loc2[0] === c[0] && loc2[1] === c[1] && z2 === z && !force) return false;
-           var proj = geoRawMercator().transform(projection.transform()); // copy projection
+         var _tags;

 
 

-           var k2 = clamp(geoZoomToScale(z2, TILESIZE), kMin, kMax);
-           proj.scale(k2);
-           var t = proj.translate();
-           var point = proj(loc2);
-           var center = pxCenter();
-           t[0] += center[0] - point[0];
-           t[1] += center[1] - point[1];
-           return setTransform(identity$2.translate(t[0], t[1]).scale(k2), duration, force);
-         }
+         var _countryCode;

 
 

-         map.pan = function (delta, duration) {
-           var t = projection.translate();
-           var k = projection.scale();
-           t[0] += delta[0];
-           t[1] += delta[1];
+         var _staticPlaceholder; // initialize deprecated tags array

 
 

-           if (duration) {
-             _selection.transition().duration(duration).on('start', function () {
-               map.startEase();
-             }).call(_zoomerPanner.transform, identity$2.translate(t[0], t[1]).scale(k));
-           } else {
-             projection.translate(t);
-             _transformStart = projection.transform();

 
 

-             _selection.call(_zoomerPanner.transform, _transformStart);
+         var _dataDeprecated = [];
+         _mainFileFetcher.get('deprecated').then(function (d) {
+           _dataDeprecated = d;
+         })["catch"](function () {
+           /* ignore */
+         }); // ensure multiCombo field.key ends with a ':'

 
 

-             dispatch$1.call('move', this, map);
-             immediateRedraw();
-           }
+         if (_isMulti && field.key && /[^:]$/.test(field.key)) {
+           field.key += ':';
+         }

 
 

-           return map;
-         };
+         function snake(s) {
+           return s.replace(/\s+/g, '_').toLowerCase();
+         }

 
 

-         map.dimensions = function (val) {
-           if (!arguments.length) return _dimensions;
-           _dimensions = val;
-           drawLayers.dimensions(_dimensions);
-           context.background().dimensions(_dimensions);
-           projection.clipExtent([[0, 0], _dimensions]);
-           _getMouseCoords = utilFastMouse(supersurface.node());
-           scheduleRedraw();
-           return map;
-         };
+         function clean(s) {
+           return s.split(';').map(function (s) {
+             return s.trim();
+           }).join(';');
+         } // returns the tag value for a display value
+         // (for multiCombo, dval should be the key suffix, not the entire key)

 
 

-         function zoomIn(delta) {
-           setCenterZoom(map.center(), ~~map.zoom() + delta, 250, true);
-         }

 
 

-         function zoomOut(delta) {
-           setCenterZoom(map.center(), ~~map.zoom() - delta, 250, true);
-         }
+         function tagValue(dval) {
+           dval = clean(dval || '');

 
 

-         map.zoomIn = function () {
-           zoomIn(1);
-         };
+           var found = _comboData.find(function (o) {
+             return o.key && clean(o.value) === dval;
+           });

 
 

-         map.zoomInFurther = function () {
-           zoomIn(4);
-         };
+           if (found) return found.key;

 
 

-         map.canZoomIn = function () {
-           return map.zoom() < maxZoom;
-         };
+           if (field.type === 'typeCombo' && !dval) {
+             return 'yes';
+           }

 
 

-         map.zoomOut = function () {
-           zoomOut(1);
-         };
+           return (_snake_case ? snake(dval) : dval) || undefined;
+         } // returns the display value for a tag value
+         // (for multiCombo, tval should be the key suffix, not the entire key)

 
 

-         map.zoomOutFurther = function () {
-           zoomOut(4);
-         };

 
 

-         map.canZoomOut = function () {
-           return map.zoom() > minZoom;
-         };
+         function displayValue(tval) {
+           tval = tval || '';

 
 

-         map.center = function (loc2) {
-           if (!arguments.length) {
-             return projection.invert(pxCenter());
+           if (field.hasTextForStringId('options.' + tval)) {
+             return field.t('options.' + tval, {
+               "default": tval
+             });

            }
 
            }
 

-           if (setCenterZoom(loc2, map.zoom())) {
-             dispatch$1.call('move', this, map);
+           if (field.type === 'typeCombo' && tval.toLowerCase() === 'yes') {
+             return '';

            }
 
            }
 

-           scheduleRedraw();
-           return map;
-         };
+           return tval;
+         } // Compute the difference between arrays of objects by `value` property
+         //
+         // objectDifference([{value:1}, {value:2}, {value:3}], [{value:2}])
+         // > [{value:1}, {value:3}]
+         //

 
 

-         map.unobscuredCenterZoomEase = function (loc, zoom) {
-           var offset = map.unobscuredOffsetPx();
-           var proj = geoRawMercator().transform(projection.transform()); // copy projection
-           // use the target zoom to calculate the offset center

 
 

-           proj.scale(geoZoomToScale(zoom, TILESIZE));
-           var locPx = proj(loc);
-           var offsetLocPx = [locPx[0] + offset[0], locPx[1] + offset[1]];
-           var offsetLoc = proj.invert(offsetLocPx);
-           map.centerZoomEase(offsetLoc, zoom);
-         };
+         function objectDifference(a, b) {
+           return a.filter(function (d1) {
+             return !b.some(function (d2) {
+               return !d2.isMixed && d1.value === d2.value;
+             });
+           });
+         }

 
 

-         map.unobscuredOffsetPx = function () {
-           var openPane = context.container().select('.map-panes .map-pane.shown');
+         function initCombo(selection, attachTo) {
+           if (!_allowCustomValues) {
+             selection.attr('readonly', 'readonly');
+           }

 
 

-           if (!openPane.empty()) {
-             return [openPane.node().offsetWidth / 2, 0];
+           if (_showTagInfoSuggestions && services.taginfo) {
+             selection.call(_combobox.fetcher(setTaginfoValues), attachTo);
+             setTaginfoValues('', setPlaceholder);
+           } else {
+             selection.call(_combobox, attachTo);
+             setStaticValues(setPlaceholder);

            }
            }

+         }

 
 

-           return [0, 0];
-         };
+         function setStaticValues(callback) {
+           if (!_optarray) return;
+           _comboData = _optarray.map(function (v) {
+             return {
+               key: v,
+               value: field.t('options.' + v, {
+                 "default": v
+               }),
+               title: v,
+               display: field.t.html('options.' + v, {
+                 "default": v
+               }),
+               klass: field.hasTextForStringId('options.' + v) ? '' : 'raw-option'
+             };
+           });

 
 

-         map.zoom = function (z2) {
-           if (!arguments.length) {
-             return Math.max(geoScaleToZoom(projection.scale(), TILESIZE), 0);
-           }
+           _combobox.data(objectDifference(_comboData, _multiData));

 
 

-           if (z2 < _minzoom) {
-             surface.interrupt();
-             dispatch$1.call('hitMinZoom', this, map);
-             z2 = context.minEditableZoom();
-           }
+           if (callback) callback(_comboData);
+         }

 
 

-           if (setCenterZoom(map.center(), z2)) {
-             dispatch$1.call('move', this, map);
+         function setTaginfoValues(q, callback) {
+           var fn = _isMulti ? 'multikeys' : 'values';
+           var query = (_isMulti ? field.key : '') + q;
+           var hasCountryPrefix = _isNetwork && _countryCode && _countryCode.indexOf(q.toLowerCase()) === 0;
+
+           if (hasCountryPrefix) {
+             query = _countryCode + ':';

            }
 
            }
 

-           scheduleRedraw();
-           return map;
-         };
+           var params = {
+             debounce: q !== '',
+             key: field.key,
+             query: query
+           };

 
 

-         map.centerZoom = function (loc2, z2) {
-           if (setCenterZoom(loc2, z2)) {
-             dispatch$1.call('move', this, map);
+           if (_entityIDs.length) {
+             params.geometry = context.graph().geometry(_entityIDs[0]);

            }
 
            }
 

-           scheduleRedraw();
-           return map;
-         };
+           services.taginfo[fn](params, function (err, data) {
+             if (err) return;
+             data = data.filter(function (d) {
+               if (field.type === 'typeCombo' && d.value === 'yes') {
+                 // don't show the fallback value
+                 return false;
+               } // don't show values with very low usage

 
 

-         map.zoomTo = function (entity) {
-           var extent = entity.extent(context.graph());
-           if (!isFinite(extent.area())) return map;
-           var z2 = clamp(map.trimmedExtentZoom(extent), 0, 20);
-           return map.centerZoom(extent.center(), z2);
-         };

 
 

-         map.centerEase = function (loc2, duration) {
-           duration = duration || 250;
-           setCenterZoom(loc2, map.zoom(), duration);
-           return map;
-         };
+               return !d.count || d.count > 10;
+             });
+             var deprecatedValues = osmEntity.deprecatedTagValuesByKey(_dataDeprecated)[field.key];

 
 

-         map.zoomEase = function (z2, duration) {
-           duration = duration || 250;
-           setCenterZoom(map.center(), z2, duration, false);
-           return map;
-         };
+             if (deprecatedValues) {
+               // don't suggest deprecated tag values
+               data = data.filter(function (d) {
+                 return deprecatedValues.indexOf(d.value) === -1;
+               });
+             }

 
 

-         map.centerZoomEase = function (loc2, z2, duration) {
-           duration = duration || 250;
-           setCenterZoom(loc2, z2, duration, false);
-           return map;
-         };
+             if (hasCountryPrefix) {
+               data = data.filter(function (d) {
+                 return d.value.toLowerCase().indexOf(_countryCode + ':') === 0;
+               });
+             } // hide the caret if there are no suggestions

 
 

-         map.transformEase = function (t2, duration) {
-           duration = duration || 250;
-           setTransform(t2, duration, false
-           /* don't force */
-           );
-           return map;
-         };

 
 

-         map.zoomToEase = function (obj, duration) {
-           var extent;
+             _container.classed('empty-combobox', data.length === 0);

 
 

-           if (Array.isArray(obj)) {
-             obj.forEach(function (entity) {
-               var entityExtent = entity.extent(context.graph());
+             _comboData = data.map(function (d) {
+               var k = d.value;
+               if (_isMulti) k = k.replace(field.key, '');
+               var label = field.t('options.' + k, {
+                 "default": k
+               });
+               return {
+                 key: k,
+                 value: label,
+                 display: field.t.html('options.' + k, {
+                   "default": k
+                 }),
+                 title: d.title || label,
+                 klass: field.hasTextForStringId('options.' + k) ? '' : 'raw-option'
+               };
+             });
+             _comboData = objectDifference(_comboData, _multiData);
+             if (callback) callback(_comboData);
+           });
+         }

 
 

-               if (!extent) {
-                 extent = entityExtent;
-               } else {
-                 extent = extent.extend(entityExtent);
-               }
+         function setPlaceholder(values) {
+           if (_isMulti || _isSemi) {
+             _staticPlaceholder = field.placeholder() || _t('inspector.add');
+           } else {
+             var vals = values.map(function (d) {
+               return d.value;
+             }).filter(function (s) {
+               return s.length < 20;

              });
              });

+             var placeholders = vals.length > 1 ? vals : values.map(function (d) {
+               return d.key;
+             });
+             _staticPlaceholder = field.placeholder() || placeholders.slice(0, 3).join(', ');
+           }
+
+           if (!/(…|\.\.\.)$/.test(_staticPlaceholder)) {
+             _staticPlaceholder += '…';
+           }
+
+           var ph;
+
+           if (!_isMulti && !_isSemi && _tags && Array.isArray(_tags[field.key])) {
+             ph = _t('inspector.multiple_values');

            } else {
            } else {

-             extent = obj.extent(context.graph());
+             ph = _staticPlaceholder;

            }
 
            }
 

-           if (!isFinite(extent.area())) return map;
-           var z2 = clamp(map.trimmedExtentZoom(extent), 0, 20);
-           return map.centerZoomEase(extent.center(), z2, duration);
-         };
+           _container.selectAll('input').attr('placeholder', ph);
+         }

 
 

-         map.startEase = function () {
-           utilBindOnce(surface, _pointerPrefix + 'down.ease', function () {
-             map.cancelEase();
-           });
-           return map;
-         };
+         function change() {
+           var t = {};
+           var val;

 
 

-         map.cancelEase = function () {
-           _selection.interrupt();
+           if (_isMulti || _isSemi) {
+             val = tagValue(utilGetSetValue(_input).replace(/,/g, ';')) || '';

 
 

-           return map;
-         };
+             _container.classed('active', false);

 
 

-         map.extent = function (val) {
-           if (!arguments.length) {
-             return new geoExtent(projection.invert([0, _dimensions[1]]), projection.invert([_dimensions[0], 0]));
-           } else {
-             var extent = geoExtent(val);
-             map.centerZoom(extent.center(), map.extentZoom(extent));
-           }
-         };
+             utilGetSetValue(_input, '');
+             var vals = val.split(';').filter(Boolean);
+             if (!vals.length) return;

 
 

-         map.trimmedExtent = function (val) {
-           if (!arguments.length) {
-             var headerY = 71;
-             var footerY = 30;
-             var pad = 10;
-             return new geoExtent(projection.invert([pad, _dimensions[1] - footerY - pad]), projection.invert([_dimensions[0] - pad, headerY + pad]));
+             if (_isMulti) {
+               utilArrayUniq(vals).forEach(function (v) {
+                 var key = (field.key || '') + v;
+
+                 if (_tags) {
+                   // don't set a multicombo value to 'yes' if it already has a non-'no' value
+                   // e.g. `language:de=main`
+                   var old = _tags[key];
+                   if (typeof old === 'string' && old.toLowerCase() !== 'no') return;
+                 }
+
+                 key = context.cleanTagKey(key);
+                 field.keys.push(key);
+                 t[key] = 'yes';
+               });
+             } else if (_isSemi) {
+               var arr = _multiData.map(function (d) {
+                 return d.key;
+               });
+
+               arr = arr.concat(vals);
+               t[field.key] = context.cleanTagValue(utilArrayUniq(arr).filter(Boolean).join(';'));
+             }
+
+             window.setTimeout(function () {
+               _input.node().focus();
+             }, 10);

            } else {
            } else {

-             var extent = geoExtent(val);
-             map.centerZoom(extent.center(), map.trimmedExtentZoom(extent));
-           }
-         };
+             var rawValue = utilGetSetValue(_input); // don't override multiple values with blank string

 
 

-         function calcExtentZoom(extent, dim) {
-           var tl = projection([extent[0][0], extent[1][1]]);
-           var br = projection([extent[1][0], extent[0][1]]); // Calculate maximum zoom that fits extent
+             if (!rawValue && Array.isArray(_tags[field.key])) return;
+             val = context.cleanTagValue(tagValue(rawValue));
+             t[field.key] = val || undefined;
+           }

 
 

-           var hFactor = (br[0] - tl[0]) / dim[0];
-           var vFactor = (br[1] - tl[1]) / dim[1];
-           var hZoomDiff = Math.log(Math.abs(hFactor)) / Math.LN2;
-           var vZoomDiff = Math.log(Math.abs(vFactor)) / Math.LN2;
-           var newZoom = map.zoom() - Math.max(hZoomDiff, vZoomDiff);
-           return newZoom;
+           dispatch.call('change', this, t);

          }
 
          }
 

-         map.extentZoom = function (val) {
-           return calcExtentZoom(geoExtent(val), _dimensions);
-         };
+         function removeMultikey(d3_event, d) {
+           d3_event.preventDefault();
+           d3_event.stopPropagation();
+           var t = {};

 
 

-         map.trimmedExtentZoom = function (val) {
-           var trimY = 120;
-           var trimX = 40;
-           var trimmed = [_dimensions[0] - trimX, _dimensions[1] - trimY];
-           return calcExtentZoom(geoExtent(val), trimmed);
-         };
+           if (_isMulti) {
+             t[d.key] = undefined;
+           } else if (_isSemi) {
+             var arr = _multiData.map(function (md) {
+               return md.key === d.key ? null : md.key;
+             }).filter(Boolean);

 
 

-         map.withinEditableZoom = function () {
-           return map.zoom() >= context.minEditableZoom();
-         };
+             arr = utilArrayUniq(arr);
+             t[field.key] = arr.length ? arr.join(';') : undefined;
+           }

 
 

-         map.isInWideSelection = function () {
-           return !map.withinEditableZoom() && context.selectedIDs().length;
-         };
+           dispatch.call('change', this, t);
+         }

 
 

-         map.editableDataEnabled = function (skipZoomCheck) {
-           var layer = context.layers().layer('osm');
-           if (!layer || !layer.enabled()) return false;
-           return skipZoomCheck || map.withinEditableZoom();
-         };
+         function combo(selection) {
+           _container = selection.selectAll('.form-field-input-wrap').data([0]);
+           var type = _isMulti || _isSemi ? 'multicombo' : 'combo';
+           _container = _container.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + type).merge(_container);

 
 

-         map.notesEditable = function () {
-           var layer = context.layers().layer('notes');
-           if (!layer || !layer.enabled()) return false;
-           return map.withinEditableZoom();
-         };
+           if (_isMulti || _isSemi) {
+             _container = _container.selectAll('.chiplist').data([0]);
+             var listClass = 'chiplist'; // Use a separate line for each value in the Destinations and Via fields
+             // to mimic highway exit signs

 
 

-         map.minzoom = function (val) {
-           if (!arguments.length) return _minzoom;
-           _minzoom = val;
-           return map;
-         };
+             if (field.key === 'destination' || field.key === 'via') {
+               listClass += ' full-line-chips';
+             }
+
+             _container = _container.enter().append('ul').attr('class', listClass).on('click', function () {
+               window.setTimeout(function () {
+                 _input.node().focus();
+               }, 10);
+             }).merge(_container);
+             _inputWrap = _container.selectAll('.input-wrap').data([0]);
+             _inputWrap = _inputWrap.enter().append('li').attr('class', 'input-wrap').merge(_inputWrap);
+             _input = _inputWrap.selectAll('input').data([0]);
+           } else {
+             _input = _container.selectAll('input').data([0]);
+           }

 
 

-         map.toggleHighlightEdited = function () {
-           surface.classed('highlight-edited', !surface.classed('highlight-edited'));
-           map.pan([0, 0]); // trigger a redraw
+           _input = _input.enter().append('input').attr('type', 'text').attr('id', field.domId).call(utilNoAuto).call(initCombo, selection).merge(_input);

 
 

-           dispatch$1.call('changeHighlighting', this);
-         };
+           if (_isNetwork) {
+             var extent = combinedEntityExtent();
+             var countryCode = extent && iso1A2Code(extent.center());
+             _countryCode = countryCode && countryCode.toLowerCase();
+           }

 
 

-         map.areaFillOptions = ['wireframe', 'partial', 'full'];
+           _input.on('change', change).on('blur', change);

 
 

-         map.activeAreaFill = function (val) {
-           if (!arguments.length) return corePreferences('area-fill') || 'partial';
-           corePreferences('area-fill', val);
+           _input.on('keydown.field', function (d3_event) {
+             switch (d3_event.keyCode) {
+               case 13:
+                 // ↩ Return
+                 _input.node().blur(); // blurring also enters the value

 
 

-           if (val !== 'wireframe') {
-             corePreferences('area-fill-toggle', val);
-           }

 
 

-           updateAreaFill();
-           map.pan([0, 0]); // trigger a redraw
+                 d3_event.stopPropagation();
+                 break;
+             }
+           });

 
 

-           dispatch$1.call('changeAreaFill', this);
-           return map;
-         };
+           if (_isMulti || _isSemi) {
+             _combobox.on('accept', function () {
+               _input.node().blur();

 
 

-         map.toggleWireframe = function () {
-           var activeFill = map.activeAreaFill();
+               _input.node().focus();
+             });

 
 

-           if (activeFill === 'wireframe') {
-             activeFill = corePreferences('area-fill-toggle') || 'partial';
-           } else {
-             activeFill = 'wireframe';
+             _input.on('focus', function () {
+               _container.classed('active', true);
+             });

            }
            }

+         }

 
 

-           map.activeAreaFill(activeFill);
-         };
+         combo.tags = function (tags) {
+           _tags = tags;

 
 

-         function updateAreaFill() {
-           var activeFill = map.activeAreaFill();
-           map.areaFillOptions.forEach(function (opt) {
-             surface.classed('fill-' + opt, Boolean(opt === activeFill));
-           });
-         }
+           if (_isMulti || _isSemi) {
+             _multiData = [];
+             var maxLength;

 
 

-         map.layers = function () {
-           return drawLayers;
-         };
+             if (_isMulti) {
+               // Build _multiData array containing keys already set..
+               for (var k in tags) {
+                 if (field.key && k.indexOf(field.key) !== 0) continue;
+                 if (!field.key && field.keys.indexOf(k) === -1) continue;
+                 var v = tags[k];
+                 if (!v || typeof v === 'string' && v.toLowerCase() === 'no') continue;
+                 var suffix = field.key ? k.substr(field.key.length) : k;

 
 

-         map.doubleUpHandler = function () {
-           return _doubleUpHandler;
-         };
+                 _multiData.push({
+                   key: k,
+                   value: displayValue(suffix),
+                   isMixed: Array.isArray(v)
+                 });
+               }

 
 

-         return utilRebind(map, dispatch$1, 'on');
-       }
+               if (field.key) {
+                 // Set keys for form-field modified (needed for undo and reset buttons)..
+                 field.keys = _multiData.map(function (d) {
+                   return d.key;
+                 }); // limit the input length so it fits after prepending the key prefix

 
 

-       function rendererPhotos(context) {
-         var dispatch$1 = dispatch('change');
-         var _layerIDs = ['streetside', 'mapillary', 'mapillary-map-features', 'mapillary-signs', 'openstreetcam'];
-         var _allPhotoTypes = ['flat', 'panoramic'];
+                 maxLength = context.maxCharsForTagKey() - utilUnicodeCharsCount(field.key);
+               } else {
+                 maxLength = context.maxCharsForTagKey();
+               }
+             } else if (_isSemi) {
+               var allValues = [];
+               var commonValues;

 
 

-         var _shownPhotoTypes = _allPhotoTypes.slice(); // shallow copy
+               if (Array.isArray(tags[field.key])) {
+                 tags[field.key].forEach(function (tagVal) {
+                   var thisVals = utilArrayUniq((tagVal || '').split(';')).filter(Boolean);
+                   allValues = allValues.concat(thisVals);

 
 

+                   if (!commonValues) {
+                     commonValues = thisVals;
+                   } else {
+                     commonValues = commonValues.filter(function (value) {
+                       return thisVals.includes(value);
+                     });
+                   }
+                 });
+                 allValues = utilArrayUniq(allValues).filter(Boolean);
+               } else {
+                 allValues = utilArrayUniq((tags[field.key] || '').split(';')).filter(Boolean);
+                 commonValues = allValues;
+               }

 
 

-         var _dateFilters = ['fromDate', 'toDate'];
+               _multiData = allValues.map(function (v) {
+                 return {
+                   key: v,
+                   value: displayValue(v),
+                   isMixed: !commonValues.includes(v)
+                 };
+               });
+               var currLength = utilUnicodeCharsCount(commonValues.join(';')); // limit the input length to the remaining available characters

 
 

-         var _fromDate;
+               maxLength = context.maxCharsForTagValue() - currLength;

 
 

-         var _toDate;
+               if (currLength > 0) {
+                 // account for the separator if a new value will be appended to existing
+                 maxLength -= 1;
+               }
+             } // a negative maxlength doesn't make sense

 
 

-         var _usernames;

 
 

-         function photos() {}
+             maxLength = Math.max(0, maxLength);
+             var allowDragAndDrop = _isSemi // only semiCombo values are ordered
+             && !Array.isArray(tags[field.key]); // Exclude existing multikeys from combo options..

 
 

-         function updateStorage() {
-           if (window.mocha) return;
-           var hash = utilStringQs(window.location.hash);
-           var enabled = context.layers().all().filter(function (d) {
-             return _layerIDs.indexOf(d.id) !== -1 && d.layer && d.layer.supported() && d.layer.enabled();
-           }).map(function (d) {
-             return d.id;
-           });
+             var available = objectDifference(_comboData, _multiData);

 
 

-           if (enabled.length) {
-             hash.photo_overlay = enabled.join(',');
-           } else {
-             delete hash.photo_overlay;
-           }
+             _combobox.data(available); // Hide 'Add' button if this field uses fixed set of
+             // options and they're all currently used,
+             // or if the field is already at its character limit

 
 

-           window.location.replace('#' + utilQsString(hash, true));
-         }

 
 

-         photos.overlayLayerIDs = function () {
-           return _layerIDs;
-         };
+             var hideAdd = !_allowCustomValues && !available.length || maxLength <= 0;

 
 

-         photos.allPhotoTypes = function () {
-           return _allPhotoTypes;
-         };
+             _container.selectAll('.chiplist .input-wrap').style('display', hideAdd ? 'none' : null); // Render chips

 
 

-         photos.dateFilters = function () {
-           return _dateFilters;
-         };

 
 

-         photos.dateFilterValue = function (val) {
-           return val === _dateFilters[0] ? _fromDate : _toDate;
-         };
+             var chips = _container.selectAll('.chip').data(_multiData);

 
 

-         photos.setDateFilter = function (type, val, updateUrl) {
-           // validate the date
-           var date = val && new Date(val);
+             chips.exit().remove();
+             var enter = chips.enter().insert('li', '.input-wrap').attr('class', 'chip');
+             enter.append('span');
+             enter.append('a');
+             chips = chips.merge(enter).order().classed('raw-value', function (d) {
+               var k = d.key;
+               if (_isMulti) k = k.replace(field.key, '');
+               return !field.hasTextForStringId('options.' + k);
+             }).classed('draggable', allowDragAndDrop).classed('mixed', function (d) {
+               return d.isMixed;
+             }).attr('title', function (d) {
+               return d.isMixed ? _t('inspector.unshared_value_tooltip') : null;
+             });

 
 

-           if (date && !isNaN(date)) {
-             val = date.toISOString().substr(0, 10);
+             if (allowDragAndDrop) {
+               registerDragAndDrop(chips);
+             }
+
+             chips.select('span').html(function (d) {
+               return d.value;
+             });
+             chips.select('a').attr('href', '#').on('click', removeMultikey).attr('class', 'remove').html('×');

            } else {
            } else {

-             val = null;
+             var isMixed = Array.isArray(tags[field.key]);
+             var mixedValues = isMixed && tags[field.key].map(function (val) {
+               return displayValue(val);
+             }).filter(Boolean);
+             var showsValue = !isMixed && tags[field.key] && !(field.type === 'typeCombo' && tags[field.key] === 'yes');
+             var isRawValue = showsValue && !field.hasTextForStringId('options.' + tags[field.key]);
+             var isKnownValue = showsValue && !isRawValue;
+             var isReadOnly = !_allowCustomValues || isKnownValue;
+             utilGetSetValue(_input, !isMixed ? displayValue(tags[field.key]) : '').classed('raw-value', isRawValue).classed('known-value', isKnownValue).attr('readonly', isReadOnly ? 'readonly' : undefined).attr('title', isMixed ? mixedValues.join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : _staticPlaceholder || '').classed('mixed', isMixed).on('keydown.deleteCapture', function (d3_event) {
+               if (isReadOnly && isKnownValue && (d3_event.keyCode === utilKeybinding.keyCodes['⌫'] || d3_event.keyCode === utilKeybinding.keyCodes['⌦'])) {
+                 d3_event.preventDefault();
+                 d3_event.stopPropagation();
+                 var t = {};
+                 t[field.key] = undefined;
+                 dispatch.call('change', this, t);
+               }
+             });

            }
            }

+         };

 
 

-           if (type === _dateFilters[0]) {
-             _fromDate = val;
+         function registerDragAndDrop(selection) {
+           // allow drag and drop re-ordering of chips
+           var dragOrigin, targetIndex;
+           selection.call(d3_drag().on('start', function (d3_event) {
+             dragOrigin = {
+               x: d3_event.x,
+               y: d3_event.y
+             };
+             targetIndex = null;
+           }).on('drag', function (d3_event) {
+             var x = d3_event.x - dragOrigin.x,
+                 y = d3_event.y - dragOrigin.y;
+             if (!select(this).classed('dragging') && // don't display drag until dragging beyond a distance threshold
+             Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) <= 5) return;
+             var index = selection.nodes().indexOf(this);
+             select(this).classed('dragging', true);
+             targetIndex = null;
+             var targetIndexOffsetTop = null;
+             var draggedTagWidth = select(this).node().offsetWidth;

 
 

-             if (_fromDate && _toDate && new Date(_toDate) < new Date(_fromDate)) {
-               _toDate = _fromDate;
-             }
-           }
+             if (field.key === 'destination' || field.key === 'via') {
+               // meaning tags are full width
+               _container.selectAll('.chip').style('transform', function (d2, index2) {
+                 var node = select(this).node();

 
 

-           if (type === _dateFilters[1]) {
-             _toDate = val;
+                 if (index === index2) {
+                   return 'translate(' + x + 'px, ' + y + 'px)'; // move the dragged tag up the order
+                 } else if (index2 > index && d3_event.y > node.offsetTop) {
+                   if (targetIndex === null || index2 > targetIndex) {
+                     targetIndex = index2;
+                   }

 
 

-             if (_fromDate && _toDate && new Date(_toDate) < new Date(_fromDate)) {
-               _fromDate = _toDate;
-             }
-           }
+                   return 'translateY(-100%)'; // move the dragged tag down the order
+                 } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
+                   if (targetIndex === null || index2 < targetIndex) {
+                     targetIndex = index2;
+                   }

 
 

-           dispatch$1.call('change', this);
+                   return 'translateY(100%)';
+                 }

 
 

-           if (updateUrl) {
-             var rangeString;
+                 return null;
+               });
+             } else {
+               _container.selectAll('.chip').each(function (d2, index2) {
+                 var node = select(this).node(); // check the cursor is in the bounding box

 
 

-             if (_fromDate || _toDate) {
-               rangeString = (_fromDate || '') + '_' + (_toDate || '');
-             }
+                 if (index !== index2 && d3_event.x < node.offsetLeft + node.offsetWidth + 5 && d3_event.x > node.offsetLeft && d3_event.y < node.offsetTop + node.offsetHeight && d3_event.y > node.offsetTop) {
+                   targetIndex = index2;
+                   targetIndexOffsetTop = node.offsetTop;
+                 }
+               }).style('transform', function (d2, index2) {
+                 var node = select(this).node();

 
 

-             setUrlFilterValue('photo_dates', rangeString);
-           }
-         };
+                 if (index === index2) {
+                   return 'translate(' + x + 'px, ' + y + 'px)';
+                 } // only translate tags in the same row

 
 

-         photos.setUsernameFilter = function (val, updateUrl) {
-           if (val && typeof val === 'string') val = val.replace(/;/g, ',').split(',');

 
 

-           if (val) {
-             val = val.map(function (d) {
-               return d.trim();
-             }).filter(Boolean);
+                 if (node.offsetTop === targetIndexOffsetTop) {
+                   if (index2 < index && index2 >= targetIndex) {
+                     return 'translateX(' + draggedTagWidth + 'px)';
+                   } else if (index2 > index && index2 <= targetIndex) {
+                     return 'translateX(-' + draggedTagWidth + 'px)';
+                   }
+                 }

 
 

-             if (!val.length) {
-               val = null;
+                 return null;
+               });
+             }
+           }).on('end', function () {
+             if (!select(this).classed('dragging')) {
+               return;

              }
              }

-           }

 
 

-           _usernames = val;
-           dispatch$1.call('change', this);
+             var index = selection.nodes().indexOf(this);
+             select(this).classed('dragging', false);

 
 

-           if (updateUrl) {
-             var hashString;
+             _container.selectAll('.chip').style('transform', null);

 
 

-             if (_usernames) {
-               hashString = _usernames.join(',');
-             }
+             if (typeof targetIndex === 'number') {
+               var element = _multiData[index];

 
 

-             setUrlFilterValue('photo_username', hashString);
-           }
-         };
+               _multiData.splice(index, 1);

 
 

-         function setUrlFilterValue(property, val) {
-           if (!window.mocha) {
-             var hash = utilStringQs(window.location.hash);
+               _multiData.splice(targetIndex, 0, element);

 
 

-             if (val) {
-               if (hash[property] === val) return;
-               hash[property] = val;
-             } else {
-               if (!(property in hash)) return;
-               delete hash[property];
-             }
+               var t = {};

 
 

-             window.location.replace('#' + utilQsString(hash, true));
-           }
-         }
+               if (_multiData.length) {
+                 t[field.key] = _multiData.map(function (element) {
+                   return element.key;
+                 }).join(';');
+               } else {
+                 t[field.key] = undefined;
+               }

 
 

-         function showsLayer(id) {
-           var layer = context.layers().layer(id);
-           return layer && layer.supported() && layer.enabled();
-         }
+               dispatch.call('change', this, t);
+             }

 
 

-         photos.shouldFilterByDate = function () {
-           return showsLayer('mapillary') || showsLayer('openstreetcam') || showsLayer('streetside');
-         };
+             dragOrigin = undefined;
+             targetIndex = undefined;
+           }));
+         }

 
 

-         photos.shouldFilterByPhotoType = function () {
-           return showsLayer('mapillary') || showsLayer('streetside') && showsLayer('openstreetcam');
+         combo.focus = function () {
+           _input.node().focus();

          };
 
          };
 

-         photos.shouldFilterByUsername = function () {
-           return showsLayer('mapillary') || showsLayer('openstreetcam') || showsLayer('streetside');
+         combo.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return combo;

          };
 
          };
 

-         photos.showsPhotoType = function (val) {
-           if (!photos.shouldFilterByPhotoType()) return true;
-           return _shownPhotoTypes.indexOf(val) !== -1;
-         };
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }

 
 

-         photos.showsFlat = function () {
-           return photos.showsPhotoType('flat');
-         };
+         return utilRebind(combo, dispatch, 'on');
+       }

 
 

-         photos.showsPanoramic = function () {
-           return photos.showsPhotoType('panoramic');
-         };
+       function uiFieldText(field, context) {
+         var dispatch = dispatch$8('change');
+         var input = select(null);
+         var outlinkButton = select(null);
+         var _entityIDs = [];

 
 

-         photos.fromDate = function () {
-           return _fromDate;
-         };
+         var _tags;

 
 

-         photos.toDate = function () {
-           return _toDate;
-         };
+         var _phoneFormats = {};

 
 

-         photos.togglePhotoType = function (val) {
-           var index = _shownPhotoTypes.indexOf(val);
+         if (field.type === 'tel') {
+           _mainFileFetcher.get('phone_formats').then(function (d) {
+             _phoneFormats = d;
+             updatePhonePlaceholder();
+           })["catch"](function () {
+             /* ignore */
+           });
+         }

 
 

-           if (index !== -1) {
-             _shownPhotoTypes.splice(index, 1);
-           } else {
-             _shownPhotoTypes.push(val);
-           }
+         function calcLocked() {
+           // Protect certain fields that have a companion `*:wikidata` value
+           var isLocked = (field.id === 'brand' || field.id === 'network' || field.id === 'operator' || field.id === 'flag') && _entityIDs.length && _entityIDs.some(function (entityID) {
+             var entity = context.graph().hasEntity(entityID);
+             if (!entity) return false; // Features linked to Wikidata are likely important and should be protected

 
 

-           dispatch$1.call('change', this);
-           return photos;
-         };
+             if (entity.tags.wikidata) return true;
+             var preset = _mainPresetIndex.match(entity, context.graph());
+             var isSuggestion = preset && preset.suggestion; // Lock the field if there is a value and a companion `*:wikidata` value

 
 

-         photos.usernames = function () {
-           return _usernames;
-         };
+             var which = field.id; // 'brand', 'network', 'operator', 'flag'

 
 

-         photos.init = function () {
-           var hash = utilStringQs(window.location.hash);
+             return isSuggestion && !!entity.tags[which] && !!entity.tags[which + ':wikidata'];
+           });

 
 

-           if (hash.photo_dates) {
-             // expect format like `photo_dates=2019-01-01_2020-12-31`, but allow a couple different separators
-             var parts = /^(.*)[–_](.*)$/g.exec(hash.photo_dates.trim());
-             this.setDateFilter('fromDate', parts && parts.length >= 2 && parts[1], false);
-             this.setDateFilter('toDate', parts && parts.length >= 3 && parts[2], false);
-           }
+           field.locked(isLocked);
+         }

 
 

-           if (hash.photo_username) {
-             this.setUsernameFilter(hash.photo_username, false);
-           }
+         function i(selection) {
+           calcLocked();
+           var isLocked = field.locked();
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           input = wrap.selectAll('input').data([0]);
+           input = input.enter().append('input').attr('type', field.type === 'identifier' ? 'text' : field.type).attr('id', field.domId).classed(field.type, true).call(utilNoAuto).merge(input);
+           input.classed('disabled', !!isLocked).attr('readonly', isLocked || null).on('input', change(true)).on('blur', change()).on('change', change());

 
 

-           if (hash.photo_overlay) {
-             // support enabling photo layers by default via a URL parameter, e.g. `photo_overlay=openstreetcam;mapillary;streetside`
-             var hashOverlayIDs = hash.photo_overlay.replace(/;/g, ',').split(',');
-             hashOverlayIDs.forEach(function (id) {
-               var layer = _layerIDs.indexOf(id) !== -1 && context.layers().layer(id);
-               if (layer && !layer.enabled()) layer.enabled(true);
+           if (field.type === 'tel') {
+             updatePhonePlaceholder();
+           } else if (field.type === 'number') {
+             var rtl = _mainLocalizer.textDirection() === 'rtl';
+             input.attr('type', 'text');
+             var inc = field.increment;
+             var buttons = wrap.selectAll('.increment, .decrement').data(rtl ? [inc, -inc] : [-inc, inc]);
+             buttons.enter().append('button').attr('class', function (d) {
+               var which = d > 0 ? 'increment' : 'decrement';
+               return 'form-field-button ' + which;
+             }).merge(buttons).on('click', function (d3_event, d) {
+               d3_event.preventDefault();
+               var raw_vals = input.node().value || '0';
+               var vals = raw_vals.split(';');
+               vals = vals.map(function (v) {
+                 var num = parseFloat(v.trim(), 10);
+                 return isFinite(num) ? clamped(num + d) : v.trim();
+               });
+               input.node().value = vals.join(';');
+               change()();

              });
              });

+           } else if (field.type === 'identifier' && field.urlFormat && field.pattern) {
+             input.attr('type', 'text');
+             outlinkButton = wrap.selectAll('.foreign-id-permalink').data([0]);
+             outlinkButton.enter().append('button').call(svgIcon('#iD-icon-out-link')).attr('class', 'form-field-button foreign-id-permalink').attr('title', function () {
+               var domainResults = /^https?:\/\/(.{1,}?)\//.exec(field.urlFormat);
+
+               if (domainResults.length >= 2 && domainResults[1]) {
+                 var domain = domainResults[1];
+                 return _t('icons.view_on', {
+                   domain: domain
+                 });
+               }
+
+               return '';
+             }).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               var value = validIdentifierValueForLink();
+
+               if (value) {
+                 var url = field.urlFormat.replace(/{value}/, encodeURIComponent(value));
+                 window.open(url, '_blank');
+               }
+             }).merge(outlinkButton);
+           } else if (field.type === 'url') {
+             input.attr('type', 'text');
+             outlinkButton = wrap.selectAll('.foreign-id-permalink').data([0]);
+             outlinkButton.enter().append('button').call(svgIcon('#iD-icon-out-link')).attr('class', 'form-field-button foreign-id-permalink').attr('title', function () {
+               return _t('icons.visit_website');
+             }).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               var value = validIdentifierValueForLink();
+               if (value) window.open(value, '_blank');
+             }).merge(outlinkButton);

            }
            }

+         }

 
 

-           if (hash.photo) {
-             // support opening a photo via a URL parameter, e.g. `photo=mapillary-fztgSDtLpa08ohPZFZjeRQ`
-             var photoIds = hash.photo.replace(/;/g, ',').split(',');
-             var photoId = photoIds.length && photoIds[0].trim();
-             var results = /(.*)\/(.*)/g.exec(photoId);
+         function updatePhonePlaceholder() {
+           if (input.empty() || !Object.keys(_phoneFormats).length) return;
+           var extent = combinedEntityExtent();
+           var countryCode = extent && iso1A2Code(extent.center());

 
 

-             if (results && results.length >= 3) {
-               var serviceId = results[1];
-               var photoKey = results[2];
-               var service = services[serviceId];
+           var format = countryCode && _phoneFormats[countryCode.toLowerCase()];

 
 

-               if (service && service.ensureViewerLoaded) {
-                 // if we're showing a photo then make sure its layer is enabled too
-                 var layer = _layerIDs.indexOf(serviceId) !== -1 && context.layers().layer(serviceId);
-                 if (layer && !layer.enabled()) layer.enabled(true);
-                 var baselineTime = Date.now();
-                 service.on('loadedImages.rendererPhotos', function () {
-                   // don't open the viewer if too much time has elapsed
-                   if (Date.now() - baselineTime > 45000) {
-                     service.on('loadedImages.rendererPhotos', null);
-                     return;
-                   }
+           if (format) input.attr('placeholder', format);
+         }
+
+         function validIdentifierValueForLink() {
+           var value = utilGetSetValue(input).trim().split(';')[0];
+           if (field.type === 'url' && value) return value;

 
 

-                   if (!service.cachedImage(photoKey)) return;
-                   service.on('loadedImages.rendererPhotos', null);
-                   service.ensureViewerLoaded(context).then(function () {
-                     service.selectImage(context, photoKey).showViewer(context);
-                   });
-                 });
-               }
-             }
+           if (field.type === 'identifier' && field.pattern) {
+             return value && value.match(new RegExp(field.pattern));

            }
 
            }
 

-           context.layers().on('change.rendererPhotos', updateStorage);
-         };
-
-         return utilRebind(photos, dispatch$1, 'on');
-       }
+           return null;
+         } // clamp number to min/max

 
 

-       function uiAccount(context) {
-         var osm = context.connection();

 
 

-         function update(selection) {
-           if (!osm) return;
+         function clamped(num) {
+           if (field.minValue !== undefined) {
+             num = Math.max(num, field.minValue);
+           }

 
 

-           if (!osm.authenticated()) {
-             selection.selectAll('.userLink, .logoutLink').classed('hide', true);
-             return;
+           if (field.maxValue !== undefined) {
+             num = Math.min(num, field.maxValue);

            }
 
            }
 

-           osm.userDetails(function (err, details) {
-             var userLink = selection.select('.userLink'),
-                 logoutLink = selection.select('.logoutLink');
-             userLink.html('');
-             logoutLink.html('');
-             if (err || !details) return;
-             selection.selectAll('.userLink, .logoutLink').classed('hide', false); // Link
+           return num;
+         }

 
 

-             var userLinkA = userLink.append('a').attr('href', osm.userURL(details.display_name)).attr('target', '_blank'); // Add thumbnail or dont
+         function change(onInput) {
+           return function () {
+             var t = {};
+             var val = utilGetSetValue(input);
+             if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string

 
 

-             if (details.image_url) {
-               userLinkA.append('img').attr('class', 'icon pre-text user-icon').attr('src', details.image_url);
-             } else {
-               userLinkA.call(svgIcon('#iD-icon-avatar', 'pre-text light'));
-             } // Add user name
+             if (!val && Array.isArray(_tags[field.key])) return;

 
 

+             if (!onInput) {
+               if (field.type === 'number' && val) {
+                 var vals = val.split(';');
+                 vals = vals.map(function (v) {
+                   var num = parseFloat(v.trim(), 10);
+                   return isFinite(num) ? clamped(num) : v.trim();
+                 });
+                 val = vals.join(';');
+               }

 
 

-             userLinkA.append('span').attr('class', 'label').html(details.display_name);
-             logoutLink.append('a').attr('class', 'logout').attr('href', '#').html(_t.html('logout')).on('click.logout', function (d3_event) {
-               d3_event.preventDefault();
-               osm.logout();
-             });
-           });
+               utilGetSetValue(input, val);
+             }
+
+             t[field.key] = val || undefined;
+             dispatch.call('change', this, t, onInput);
+           };

          }
 
          }
 

-         return function (selection) {
-           selection.append('li').attr('class', 'userLink').classed('hide', true);
-           selection.append('li').attr('class', 'logoutLink').classed('hide', true);
+         i.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return i;
+         };

 
 

-           if (osm) {
-             osm.on('change.account', function () {
-               update(selection);
-             });
-             update(selection);
+         i.tags = function (tags) {
+           _tags = tags;
+           var isMixed = Array.isArray(tags[field.key]);
+           utilGetSetValue(input, !isMixed && tags[field.key] ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder() || _t('inspector.unknown')).classed('mixed', isMixed);
+
+           if (outlinkButton && !outlinkButton.empty()) {
+             var disabled = !validIdentifierValueForLink();
+             outlinkButton.classed('disabled', disabled);

            }
          };
            }
          };

-       }

 
 

-       function uiAttribution(context) {
-         var _selection = select(null);
+         i.focus = function () {
+           var node = input.node();
+           if (node) node.focus();
+         };

 
 

-         function render(selection, data, klass) {
-           var div = selection.selectAll(".".concat(klass)).data([0]);
-           div = div.enter().append('div').attr('class', klass).merge(div);
-           var attributions = div.selectAll('.attribution').data(data, function (d) {
-             return d.id;
-           });
-           attributions.exit().remove();
-           attributions = attributions.enter().append('span').attr('class', 'attribution').each(function (d, i, nodes) {
-             var attribution = select(nodes[i]);
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }

 
 

-             if (d.terms_html) {
-               attribution.html(d.terms_html);
-               return;
-             }
+         return utilRebind(i, dispatch, 'on');
+       }

 
 

-             if (d.terms_url) {
-               attribution = attribution.append('a').attr('href', d.terms_url).attr('target', '_blank');
-             }
+       function uiFieldAccess(field, context) {
+         var dispatch = dispatch$8('change');
+         var items = select(null);

 
 

-             var sourceID = d.id.replace(/\./g, '<TX_DOT>');
-             var terms_text = _t("imagery.".concat(sourceID, ".attribution.text"), {
-               "default": d.terms_text || d.id || d.name()
-             });
+         var _tags;

 
 

-             if (d.icon && !d.overlay) {
-               attribution.append('img').attr('class', 'source-image').attr('src', d.icon);
-             }
+         function access(selection) {
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           var list = wrap.selectAll('ul').data([0]);
+           list = list.enter().append('ul').attr('class', 'rows').merge(list);
+           items = list.selectAll('li').data(field.keys); // Enter

 
 

-             attribution.append('span').attr('class', 'attribution-text').html(terms_text);
-           }).merge(attributions);
-           var copyright = attributions.selectAll('.copyright-notice').data(function (d) {
-             var notice = d.copyrightNotices(context.map().zoom(), context.map().extent());
-             return notice ? [notice] : [];
+           var enter = items.enter().append('li').attr('class', function (d) {
+             return 'labeled-input preset-access-' + d;

            });
            });

-           copyright.exit().remove();
-           copyright = copyright.enter().append('span').attr('class', 'copyright-notice').merge(copyright);
-           copyright.html(String);
-         }
-
-         function update() {
-           var baselayer = context.background().baseLayerSource();
+           enter.append('span').attr('class', 'label preset-label-access').attr('for', function (d) {
+             return 'preset-input-access-' + d;
+           }).html(function (d) {
+             return field.t.html('types.' + d);
+           });
+           enter.append('div').attr('class', 'preset-input-access-wrap').append('input').attr('type', 'text').attr('class', function (d) {
+             return 'preset-input-access preset-input-access-' + d;
+           }).call(utilNoAuto).each(function (d) {
+             select(this).call(uiCombobox(context, 'access-' + d).data(access.options(d)));
+           }); // Update

 
 

-           _selection.call(render, baselayer ? [baselayer] : [], 'base-layer-attribution');
+           items = items.merge(enter);
+           wrap.selectAll('.preset-input-access').on('change', change).on('blur', change);
+         }

 
 

-           var z = context.map().zoom();
-           var overlays = context.background().overlayLayerSources() || [];
+         function change(d3_event, d) {
+           var tag = {};
+           var value = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string

 
 

-           _selection.call(render, overlays.filter(function (s) {
-             return s.validZoom(z);
-           }), 'overlay-layer-attribution');
+           if (!value && typeof _tags[d] !== 'string') return;
+           tag[d] = value || undefined;
+           dispatch.call('change', this, tag);

          }
 
          }
 

-         return function (selection) {
-           _selection = selection;
-           context.background().on('change.attribution', update);
-           context.map().on('move.attribution', throttle(update, 400, {
-             leading: false
-           }));
-           update();
-         };
-       }
-
-       function uiContributors(context) {
-         var osm = context.connection(),
-             debouncedUpdate = debounce(function () {
-           update();
-         }, 1000),
-             limit = 4,
-             hidden = false,
-             wrap = select(null);
+         access.options = function (type) {
+           var options = ['no', 'permissive', 'private', 'permit', 'destination'];

 
 

-         function update() {
-           if (!osm) return;
-           var users = {},
-               entities = context.history().intersects(context.map().extent());
-           entities.forEach(function (entity) {
-             if (entity && entity.user) users[entity.user] = true;
-           });
-           var u = Object.keys(users),
-               subset = u.slice(0, u.length > limit ? limit - 1 : limit);
-           wrap.html('').call(svgIcon('#iD-icon-nearby', 'pre-text light'));
-           var userList = select(document.createElement('span'));
-           userList.selectAll().data(subset).enter().append('a').attr('class', 'user-link').attr('href', function (d) {
-             return osm.userURL(d);
-           }).attr('target', '_blank').html(String);
+           if (type !== 'access') {
+             options.unshift('yes');
+             options.push('designated');

 
 

-           if (u.length > limit) {
-             var count = select(document.createElement('span'));
-             var othersNum = u.length - limit + 1;
-             count.append('a').attr('target', '_blank').attr('href', function () {
-               return osm.changesetsURL(context.map().center(), context.map().zoom());
-             }).html(othersNum);
-             wrap.append('span').html(_t.html('contributors.truncated_list', {
-               n: othersNum,
-               users: userList.html(),
-               count: count.html()
-             }));
-           } else {
-             wrap.append('span').html(_t.html('contributors.list', {
-               users: userList.html()
-             }));
+             if (type === 'bicycle') {
+               options.push('dismount');
+             }

            }
 
            }
 

-           if (!u.length) {
-             hidden = true;
-             wrap.transition().style('opacity', 0);
-           } else if (hidden) {
-             wrap.transition().style('opacity', 1);
-           }
-         }
+           return options.map(function (option) {
+             return {
+               title: field.t('options.' + option + '.description'),
+               value: option
+             };
+           });
+         };

 
 

-         return function (selection) {
-           if (!osm) return;
-           wrap = selection;
-           update();
-           osm.on('loaded.contributors', debouncedUpdate);
-           context.map().on('move.contributors', debouncedUpdate);
+         var placeholdersByHighway = {
+           footway: {
+             foot: 'designated',
+             motor_vehicle: 'no'
+           },
+           steps: {
+             foot: 'yes',
+             motor_vehicle: 'no',
+             bicycle: 'no',
+             horse: 'no'
+           },
+           pedestrian: {
+             foot: 'yes',
+             motor_vehicle: 'no'
+           },
+           cycleway: {
+             motor_vehicle: 'no',
+             bicycle: 'designated'
+           },
+           bridleway: {
+             motor_vehicle: 'no',
+             horse: 'designated'
+           },
+           path: {
+             foot: 'yes',
+             motor_vehicle: 'no',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           motorway: {
+             foot: 'no',
+             motor_vehicle: 'yes',
+             bicycle: 'no',
+             horse: 'no'
+           },
+           trunk: {
+             motor_vehicle: 'yes'
+           },
+           primary: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           secondary: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           tertiary: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           residential: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           unclassified: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           service: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           motorway_link: {
+             foot: 'no',
+             motor_vehicle: 'yes',
+             bicycle: 'no',
+             horse: 'no'
+           },
+           trunk_link: {
+             motor_vehicle: 'yes'
+           },
+           primary_link: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           secondary_link: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           },
+           tertiary_link: {
+             foot: 'yes',
+             motor_vehicle: 'yes',
+             bicycle: 'yes',
+             horse: 'yes'
+           }

          };
          };

-       }

 
 

-       var _popoverID = 0;
-       function uiPopover(klass) {
-         var _id = _popoverID++;
+         access.tags = function (tags) {
+           _tags = tags;
+           utilGetSetValue(items.selectAll('.preset-input-access'), function (d) {
+             return typeof tags[d] === 'string' ? tags[d] : '';
+           }).classed('mixed', function (d) {
+             return tags[d] && Array.isArray(tags[d]);
+           }).attr('title', function (d) {
+             return tags[d] && Array.isArray(tags[d]) && tags[d].filter(Boolean).join('\n');
+           }).attr('placeholder', function (d) {
+             if (tags[d] && Array.isArray(tags[d])) {
+               return _t('inspector.multiple_values');
+             }

 
 

-         var _anchorSelection = select(null);
+             if (d === 'access') {
+               return 'yes';
+             }

 
 

-         var popover = function popover(selection) {
-           _anchorSelection = selection;
-           selection.each(setup);
-         };
+             if (tags.access && typeof tags.access === 'string') {
+               return tags.access;
+             }

 
 

-         var _animation = utilFunctor(false);
+             if (tags.highway) {
+               if (typeof tags.highway === 'string') {
+                 if (placeholdersByHighway[tags.highway] && placeholdersByHighway[tags.highway][d]) {
+                   return placeholdersByHighway[tags.highway][d];
+                 }
+               } else {
+                 var impliedAccesses = tags.highway.filter(Boolean).map(function (highwayVal) {
+                   return placeholdersByHighway[highwayVal] && placeholdersByHighway[highwayVal][d];
+                 }).filter(Boolean);

 
 

-         var _placement = utilFunctor('top'); // top, bottom, left, right
+                 if (impliedAccesses.length === tags.highway.length && new Set(impliedAccesses).size === 1) {
+                   // if all the highway values have the same implied access for this type then use that
+                   return impliedAccesses[0];
+                 }
+               }
+             }

 
 

+             return field.placeholder();
+           });
+         };

 
 

-         var _alignment = utilFunctor('center'); // leading, center, trailing
+         access.focus = function () {
+           items.selectAll('.preset-input-access').node().focus();
+         };

 
 

+         return utilRebind(access, dispatch, 'on');
+       }

 
 

-         var _scrollContainer = utilFunctor(select(null));
+       function uiFieldAddress(field, context) {
+         var dispatch = dispatch$8('change');

 
 

-         var _content;
+         var _selection = select(null);

 
 

-         var _displayType = utilFunctor('');
+         var _wrap = select(null);

 
 

-         var _hasArrow = utilFunctor(true); // use pointer events on supported platforms; fallback to mouse events
+         var addrField = _mainPresetIndex.field('address'); // needed for placeholder strings

 
 

+         var _entityIDs = [];

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+         var _tags;

 
 

-         popover.displayType = function (val) {
-           if (arguments.length) {
-             _displayType = utilFunctor(val);
-             return popover;
-           } else {
-             return _displayType;
-           }
-         };
+         var _countryCode;

 
 

-         popover.hasArrow = function (val) {
-           if (arguments.length) {
-             _hasArrow = utilFunctor(val);
-             return popover;
-           } else {
-             return _hasArrow;
-           }
-         };
+         var _addressFormats = [{
+           format: [['housenumber', 'street'], ['city', 'postcode']]
+         }];
+         _mainFileFetcher.get('address_formats').then(function (d) {
+           _addressFormats = d;

 
 

-         popover.placement = function (val) {
-           if (arguments.length) {
-             _placement = utilFunctor(val);
-             return popover;
-           } else {
-             return _placement;
+           if (!_selection.empty()) {
+             _selection.call(address);

            }
            }

-         };
+         })["catch"](function () {
+           /* ignore */
+         });

 
 

-         popover.alignment = function (val) {
-           if (arguments.length) {
-             _alignment = utilFunctor(val);
-             return popover;
-           } else {
-             return _alignment;
-           }
-         };
+         function getNearStreets() {
+           var extent = combinedEntityExtent();
+           var l = extent.center();
+           var box = geoExtent(l).padByMeters(200);
+           var streets = context.history().intersects(box).filter(isAddressable).map(function (d) {
+             var loc = context.projection([(extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2]);
+             var choice = geoChooseEdge(context.graph().childNodes(d), loc, context.projection);
+             return {
+               title: d.tags.name,
+               value: d.tags.name,
+               dist: choice.distance
+             };
+           }).sort(function (a, b) {
+             return a.dist - b.dist;
+           });
+           return utilArrayUniqBy(streets, 'value');

 
 

-         popover.scrollContainer = function (val) {
-           if (arguments.length) {
-             _scrollContainer = utilFunctor(val);
-             return popover;
-           } else {
-             return _scrollContainer;
+           function isAddressable(d) {
+             return d.tags.highway && d.tags.name && d.type === 'way';

            }
            }

-         };
+         }

 
 

-         popover.content = function (val) {
-           if (arguments.length) {
-             _content = val;
-             return popover;
-           } else {
-             return _content;
-           }
-         };
+         function getNearCities() {
+           var extent = combinedEntityExtent();
+           var l = extent.center();
+           var box = geoExtent(l).padByMeters(200);
+           var cities = context.history().intersects(box).filter(isAddressable).map(function (d) {
+             return {
+               title: d.tags['addr:city'] || d.tags.name,
+               value: d.tags['addr:city'] || d.tags.name,
+               dist: geoSphericalDistance(d.extent(context.graph()).center(), l)
+             };
+           }).sort(function (a, b) {
+             return a.dist - b.dist;
+           });
+           return utilArrayUniqBy(cities, 'value');

 
 

-         popover.isShown = function () {
-           var popoverSelection = _anchorSelection.select('.popover-' + _id);
+           function isAddressable(d) {
+             if (d.tags.name) {
+               if (d.tags.admin_level === '8' && d.tags.boundary === 'administrative') return true;
+               if (d.tags.border_type === 'city') return true;
+               if (d.tags.place === 'city' || d.tags.place === 'town' || d.tags.place === 'village') return true;
+             }
+
+             if (d.tags['addr:city']) return true;
+             return false;
+           }
+         }

 
 

-           return !popoverSelection.empty() && popoverSelection.classed('in');
-         };
+         function getNearValues(key) {
+           var extent = combinedEntityExtent();
+           var l = extent.center();
+           var box = geoExtent(l).padByMeters(200);
+           var results = context.history().intersects(box).filter(function hasTag(d) {
+             return _entityIDs.indexOf(d.id) === -1 && d.tags[key];
+           }).map(function (d) {
+             return {
+               title: d.tags[key],
+               value: d.tags[key],
+               dist: geoSphericalDistance(d.extent(context.graph()).center(), l)
+             };
+           }).sort(function (a, b) {
+             return a.dist - b.dist;
+           });
+           return utilArrayUniqBy(results, 'value');
+         }

 
 

-         popover.show = function () {
-           _anchorSelection.each(show);
-         };
+         function updateForCountryCode() {
+           if (!_countryCode) return;
+           var addressFormat;

 
 

-         popover.updateContent = function () {
-           _anchorSelection.each(updateContent);
-         };
+           for (var i = 0; i < _addressFormats.length; i++) {
+             var format = _addressFormats[i];

 
 

-         popover.hide = function () {
-           _anchorSelection.each(hide);
-         };
+             if (!format.countryCodes) {
+               addressFormat = format; // choose the default format, keep going
+             } else if (format.countryCodes.indexOf(_countryCode) !== -1) {
+               addressFormat = format; // choose the country format, stop here

 
 

-         popover.toggle = function () {
-           _anchorSelection.each(toggle);
-         };
+               break;
+             }
+           }

 
 

-         popover.destroy = function (selection, selector) {
-           // by default, just destroy the current popover
-           selector = selector || '.popover-' + _id;
-           selection.on(_pointerPrefix + 'enter.popover', null).on(_pointerPrefix + 'leave.popover', null).on(_pointerPrefix + 'up.popover', null).on(_pointerPrefix + 'down.popover', null).on('click.popover', null).attr('title', function () {
-             return this.getAttribute('data-original-title') || this.getAttribute('title');
-           }).attr('data-original-title', null).selectAll(selector).remove();
-         };
+           var dropdowns = addressFormat.dropdowns || ['city', 'county', 'country', 'district', 'hamlet', 'neighbourhood', 'place', 'postcode', 'province', 'quarter', 'state', 'street', 'subdistrict', 'suburb'];
+           var widths = addressFormat.widths || {
+             housenumber: 1 / 3,
+             street: 2 / 3,
+             city: 2 / 3,
+             state: 1 / 4,
+             postcode: 1 / 3
+           };

 
 

-         popover.destroyAny = function (selection) {
-           selection.call(popover.destroy, '.popover');
-         };
+           function row(r) {
+             // Normalize widths.
+             var total = r.reduce(function (sum, key) {
+               return sum + (widths[key] || 0.5);
+             }, 0);
+             return r.map(function (key) {
+               return {
+                 id: key,
+                 width: (widths[key] || 0.5) / total
+               };
+             });
+           }

 
 

-         function setup() {
-           var anchor = select(this);
+           var rows = _wrap.selectAll('.addr-row').data(addressFormat.format, function (d) {
+             return d.toString();
+           });

 
 

-           var animate = _animation.apply(this, arguments);
+           rows.exit().remove();
+           rows.enter().append('div').attr('class', 'addr-row').selectAll('input').data(row).enter().append('input').property('type', 'text').call(updatePlaceholder).attr('class', function (d) {
+             return 'addr-' + d.id;
+           }).call(utilNoAuto).each(addDropdown).style('width', function (d) {
+             return d.width * 100 + '%';
+           });

 
 

-           var popoverSelection = anchor.selectAll('.popover-' + _id).data([0]);
-           var enter = popoverSelection.enter().append('div').attr('class', 'popover popover-' + _id + ' ' + (klass ? klass : '')).classed('arrowed', _hasArrow.apply(this, arguments));
-           enter.append('div').attr('class', 'popover-arrow');
-           enter.append('div').attr('class', 'popover-inner');
-           popoverSelection = enter.merge(popoverSelection);
+           function addDropdown(d) {
+             if (dropdowns.indexOf(d.id) === -1) return; // not a dropdown

 
 

-           if (animate) {
-             popoverSelection.classed('fade', true);
+             var nearValues = d.id === 'street' ? getNearStreets : d.id === 'city' ? getNearCities : getNearValues;
+             select(this).call(uiCombobox(context, 'address-' + d.id).minItems(1).caseSensitive(true).fetcher(function (value, callback) {
+               callback(nearValues('addr:' + d.id));
+             }));

            }
 
            }
 

-           var display = _displayType.apply(this, arguments);
-
-           if (display === 'hover') {
-             var _lastNonMouseEnterTime;
+           _wrap.selectAll('input').on('blur', change()).on('change', change());

 
 

-             anchor.on(_pointerPrefix + 'enter.popover', function (d3_event) {
-               if (d3_event.pointerType) {
-                 if (d3_event.pointerType !== 'mouse') {
-                   _lastNonMouseEnterTime = d3_event.timeStamp; // only allow hover behavior for mouse input
+           _wrap.selectAll('input:not(.combobox-input)').on('input', change(true));

 
 

-                   return;
-                 } else if (_lastNonMouseEnterTime && d3_event.timeStamp - _lastNonMouseEnterTime < 1500) {
-                   // HACK: iOS 13.4 sends an erroneous `mouse` type pointerenter
-                   // event for non-mouse interactions right after sending
-                   // the correct type pointerenter event. Workaround by discarding
-                   // any mouse event that occurs immediately after a non-mouse event.
-                   return;
-                 }
-               } // don't show if buttons are pressed, e.g. during click and drag of map
+           if (_tags) updateTags(_tags);
+         }

 
 

+         function address(selection) {
+           _selection = selection;
+           _wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           _wrap = _wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(_wrap);
+           var extent = combinedEntityExtent();

 
 

-               if (d3_event.buttons !== 0) return;
-               show.apply(this, arguments);
-             }).on(_pointerPrefix + 'leave.popover', function () {
-               hide.apply(this, arguments);
-             }) // show on focus too for better keyboard navigation support
-             .on('focus.popover', function () {
-               show.apply(this, arguments);
-             }).on('blur.popover', function () {
-               hide.apply(this, arguments);
-             });
-           } else if (display === 'clickFocus') {
-             anchor.on(_pointerPrefix + 'down.popover', function (d3_event) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-             }).on(_pointerPrefix + 'up.popover', function (d3_event) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-             }).on('click.popover', toggle);
-             popoverSelection // This attribute lets the popover take focus
-             .attr('tabindex', 0).on('blur.popover', function () {
-               anchor.each(function () {
-                 hide.apply(this, arguments);
-               });
-             });
-           }
-         }
+           if (extent) {
+             var countryCode;

 
 

-         function show() {
-           var anchor = select(this);
-           var popoverSelection = anchor.selectAll('.popover-' + _id);
+             if (context.inIntro()) {
+               // localize the address format for the walkthrough
+               countryCode = _t('intro.graph.countrycode');
+             } else {
+               var center = extent.center();
+               countryCode = iso1A2Code(center);
+             }

 
 

-           if (popoverSelection.empty()) {
-             // popover was removed somehow, put it back
-             anchor.call(popover.destroy);
-             anchor.each(setup);
-             popoverSelection = anchor.selectAll('.popover-' + _id);
+             if (countryCode) {
+               _countryCode = countryCode.toLowerCase();
+               updateForCountryCode();
+             }

            }
            }

+         }

 
 

-           popoverSelection.classed('in', true);
+         function change(onInput) {
+           return function () {
+             var tags = {};

 
 

-           var displayType = _displayType.apply(this, arguments);
+             _wrap.selectAll('input').each(function (subfield) {
+               var key = field.key + ':' + subfield.id;
+               var value = this.value;
+               if (!onInput) value = context.cleanTagValue(value); // don't override multiple values with blank string

 
 

-           if (displayType === 'clickFocus') {
-             anchor.classed('active', true);
-             popoverSelection.node().focus();
-           }
+               if (Array.isArray(_tags[key]) && !value) return;
+               tags[key] = value || undefined;
+             });

 
 

-           anchor.each(updateContent);
+             dispatch.call('change', this, tags, onInput);
+           };

          }
 
          }
 

-         function updateContent() {
-           var anchor = select(this);
+         function updatePlaceholder(inputSelection) {
+           return inputSelection.attr('placeholder', function (subfield) {
+             if (_tags && Array.isArray(_tags[field.key + ':' + subfield.id])) {
+               return _t('inspector.multiple_values');
+             }

 
 

-           if (_content) {
-             anchor.selectAll('.popover-' + _id + ' > .popover-inner').call(_content.apply(this, arguments));
-           }
+             if (_countryCode) {
+               var localkey = subfield.id + '!' + _countryCode;
+               var tkey = addrField.hasTextForStringId('placeholders.' + localkey) ? localkey : subfield.id;
+               return addrField.t('placeholders.' + tkey);
+             }
+           });
+         }

 
 

-           updatePosition.apply(this, arguments); // hack: update multiple times to fix instances where the absolute offset is
-           // set before the dynamic popover size is calculated by the browser
+         function updateTags(tags) {
+           utilGetSetValue(_wrap.selectAll('input'), function (subfield) {
+             var val = tags[field.key + ':' + subfield.id];
+             return typeof val === 'string' ? val : '';
+           }).attr('title', function (subfield) {
+             var val = tags[field.key + ':' + subfield.id];
+             return val && Array.isArray(val) && val.filter(Boolean).join('\n');
+           }).classed('mixed', function (subfield) {
+             return Array.isArray(tags[field.key + ':' + subfield.id]);
+           }).call(updatePlaceholder);
+         }

 
 

-           updatePosition.apply(this, arguments);
-           updatePosition.apply(this, arguments);
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());

          }
 
          }
 

-         function updatePosition() {
-           var anchor = select(this);
-           var popoverSelection = anchor.selectAll('.popover-' + _id);
+         address.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return address;
+         };

 
 

-           var scrollContainer = _scrollContainer && _scrollContainer.apply(this, arguments);
+         address.tags = function (tags) {
+           _tags = tags;
+           updateTags(tags);
+         };

 
 

-           var scrollNode = scrollContainer && !scrollContainer.empty() && scrollContainer.node();
-           var scrollLeft = scrollNode ? scrollNode.scrollLeft : 0;
-           var scrollTop = scrollNode ? scrollNode.scrollTop : 0;
+         address.focus = function () {
+           var node = _wrap.selectAll('input').node();

 
 

-           var placement = _placement.apply(this, arguments);
+           if (node) node.focus();
+         };

 
 

-           popoverSelection.classed('left', false).classed('right', false).classed('top', false).classed('bottom', false).classed(placement, true);
+         return utilRebind(address, dispatch, 'on');
+       }

 
 

-           var alignment = _alignment.apply(this, arguments);
+       function uiFieldCycleway(field, context) {
+         var dispatch = dispatch$8('change');
+         var items = select(null);
+         var wrap = select(null);

 
 

-           var alignFactor = 0.5;
+         var _tags;

 
 

-           if (alignment === 'leading') {
-             alignFactor = 0;
-           } else if (alignment === 'trailing') {
-             alignFactor = 1;
+         function cycleway(selection) {
+           function stripcolon(s) {
+             return s.replace(':', '');

            }
 
            }
 

-           var anchorFrame = getFrame(anchor.node());
-           var popoverFrame = getFrame(popoverSelection.node());
-           var position;
+           wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           var div = wrap.selectAll('ul').data([0]);
+           div = div.enter().append('ul').attr('class', 'rows').merge(div);
+           var keys = ['cycleway:left', 'cycleway:right'];
+           items = div.selectAll('li').data(keys);
+           var enter = items.enter().append('li').attr('class', function (d) {
+             return 'labeled-input preset-cycleway-' + stripcolon(d);
+           });
+           enter.append('span').attr('class', 'label preset-label-cycleway').attr('for', function (d) {
+             return 'preset-input-cycleway-' + stripcolon(d);
+           }).html(function (d) {
+             return field.t.html('types.' + d);
+           });
+           enter.append('div').attr('class', 'preset-input-cycleway-wrap').append('input').attr('type', 'text').attr('class', function (d) {
+             return 'preset-input-cycleway preset-input-' + stripcolon(d);
+           }).call(utilNoAuto).each(function (d) {
+             select(this).call(uiCombobox(context, 'cycleway-' + stripcolon(d)).data(cycleway.options(d)));
+           });
+           items = items.merge(enter); // Update

 
 

-           switch (placement) {
-             case 'top':
-               position = {
-                 x: anchorFrame.x + (anchorFrame.w - popoverFrame.w) * alignFactor,
-                 y: anchorFrame.y - popoverFrame.h
-               };
-               break;
+           wrap.selectAll('.preset-input-cycleway').on('change', change).on('blur', change);
+         }

 
 

-             case 'bottom':
-               position = {
-                 x: anchorFrame.x + (anchorFrame.w - popoverFrame.w) * alignFactor,
-                 y: anchorFrame.y + anchorFrame.h
-               };
-               break;
+         function change(d3_event, key) {
+           var newValue = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string

 
 

-             case 'left':
-               position = {
-                 x: anchorFrame.x - popoverFrame.w,
-                 y: anchorFrame.y + (anchorFrame.h - popoverFrame.h) * alignFactor
-               };
-               break;
+           if (!newValue && (Array.isArray(_tags.cycleway) || Array.isArray(_tags[key]))) return;

 
 

-             case 'right':
-               position = {
-                 x: anchorFrame.x + anchorFrame.w,
-                 y: anchorFrame.y + (anchorFrame.h - popoverFrame.h) * alignFactor
-               };
-               break;
+           if (newValue === 'none' || newValue === '') {
+             newValue = undefined;

            }
 
            }
 

-           if (position) {
-             if (scrollNode && (placement === 'top' || placement === 'bottom')) {
-               var initialPosX = position.x;
+           var otherKey = key === 'cycleway:left' ? 'cycleway:right' : 'cycleway:left';
+           var otherValue = typeof _tags.cycleway === 'string' ? _tags.cycleway : _tags[otherKey];

 
 

-               if (position.x + popoverFrame.w > scrollNode.offsetWidth - 10) {
-                 position.x = scrollNode.offsetWidth - 10 - popoverFrame.w;
-               } else if (position.x < 10) {
-                 position.x = 10;
-               }
+           if (otherValue && Array.isArray(otherValue)) {
+             // we must always have an explicit value for comparison
+             otherValue = otherValue[0];
+           }

 
 

-               var arrow = anchor.selectAll('.popover-' + _id + ' > .popover-arrow'); // keep the arrow centered on the button, or as close as possible
+           if (otherValue === 'none' || otherValue === '') {
+             otherValue = undefined;
+           }

 
 

-               var arrowPosX = Math.min(Math.max(popoverFrame.w / 2 - (position.x - initialPosX), 10), popoverFrame.w - 10);
-               arrow.style('left', ~~arrowPosX + 'px');
-             }
+           var tag = {}; // If the left and right tags match, use the cycleway tag to tag both
+           // sides the same way

 
 

-             popoverSelection.style('left', ~~position.x + 'px').style('top', ~~position.y + 'px');
+           if (newValue === otherValue) {
+             tag = {
+               cycleway: newValue,
+               'cycleway:left': undefined,
+               'cycleway:right': undefined
+             };

            } else {
            } else {

-             popoverSelection.style('left', null).style('top', null);
+             // Always set both left and right as changing one can affect the other
+             tag = {
+               cycleway: undefined
+             };
+             tag[key] = newValue;
+             tag[otherKey] = otherValue;

            }
 
            }
 

-           function getFrame(node) {
-             var positionStyle = select(node).style('position');
-
-             if (positionStyle === 'absolute' || positionStyle === 'static') {
-               return {
-                 x: node.offsetLeft - scrollLeft,
-                 y: node.offsetTop - scrollTop,
-                 w: node.offsetWidth,
-                 h: node.offsetHeight
-               };
-             } else {
-               return {
-                 x: 0,
-                 y: 0,
-                 w: node.offsetWidth,
-                 h: node.offsetHeight
-               };
-             }
-           }
+           dispatch.call('change', this, tag);

          }
 
          }
 

-         function hide() {
-           var anchor = select(this);
+         cycleway.options = function () {
+           return field.options.map(function (option) {
+             return {
+               title: field.t('options.' + option + '.description'),
+               value: option
+             };
+           });
+         };

 
 

-           if (_displayType.apply(this, arguments) === 'clickFocus') {
-             anchor.classed('active', false);
-           }
+         cycleway.tags = function (tags) {
+           _tags = tags; // If cycleway is set, use that instead of individual values

 
 

-           anchor.selectAll('.popover-' + _id).classed('in', false);
-         }
+           var commonValue = typeof tags.cycleway === 'string' && tags.cycleway;
+           utilGetSetValue(items.selectAll('.preset-input-cycleway'), function (d) {
+             if (commonValue) return commonValue;
+             return !tags.cycleway && typeof tags[d] === 'string' ? tags[d] : '';
+           }).attr('title', function (d) {
+             if (Array.isArray(tags.cycleway) || Array.isArray(tags[d])) {
+               var vals = [];

 
 

-         function toggle() {
-           if (select(this).select('.popover-' + _id).classed('in')) {
-             hide.apply(this, arguments);
-           } else {
-             show.apply(this, arguments);
-           }
-         }
+               if (Array.isArray(tags.cycleway)) {
+                 vals = vals.concat(tags.cycleway);
+               }

 
 

-         return popover;
+               if (Array.isArray(tags[d])) {
+                 vals = vals.concat(tags[d]);
+               }
+
+               return vals.filter(Boolean).join('\n');
+             }
+
+             return null;
+           }).attr('placeholder', function (d) {
+             if (Array.isArray(tags.cycleway) || Array.isArray(tags[d])) {
+               return _t('inspector.multiple_values');
+             }
+
+             return field.placeholder();
+           }).classed('mixed', function (d) {
+             return Array.isArray(tags.cycleway) || Array.isArray(tags[d]);
+           });
+         };
+
+         cycleway.focus = function () {
+           var node = wrap.selectAll('input').node();
+           if (node) node.focus();
+         };
+
+         return utilRebind(cycleway, dispatch, 'on');

        }
 
        }
 

-       function uiTooltip(klass) {
-         var tooltip = uiPopover((klass || '') + ' tooltip').displayType('hover');
+       function uiFieldLanes(field, context) {
+         var dispatch = dispatch$8('change');
+         var LANE_WIDTH = 40;
+         var LANE_HEIGHT = 200;
+         var _entityIDs = [];

 
 

-         var _title = function _title() {
-           var title = this.getAttribute('data-original-title');
+         function lanes(selection) {
+           var lanesData = context.entity(_entityIDs[0]).lanes();

 
 

-           if (title) {
-             return title;
-           } else {
-             title = this.getAttribute('title');
-             this.removeAttribute('title');
-             this.setAttribute('data-original-title', title);
+           if (!context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode) {
+             selection.call(lanes.off);
+             return;

            }
 
            }
 

-           return title;
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           var surface = wrap.selectAll('.surface').data([0]);
+           var d = utilGetDimensions(wrap);
+           var freeSpace = d[0] - lanesData.lanes.length * LANE_WIDTH * 1.5 + LANE_WIDTH * 0.5;
+           surface = surface.enter().append('svg').attr('width', d[0]).attr('height', 300).attr('class', 'surface').merge(surface);
+           var lanesSelection = surface.selectAll('.lanes').data([0]);
+           lanesSelection = lanesSelection.enter().append('g').attr('class', 'lanes').merge(lanesSelection);
+           lanesSelection.attr('transform', function () {
+             return 'translate(' + freeSpace / 2 + ', 0)';
+           });
+           var lane = lanesSelection.selectAll('.lane').data(lanesData.lanes);
+           lane.exit().remove();
+           var enter = lane.enter().append('g').attr('class', 'lane');
+           enter.append('g').append('rect').attr('y', 50).attr('width', LANE_WIDTH).attr('height', LANE_HEIGHT);
+           enter.append('g').attr('class', 'forward').append('text').attr('y', 40).attr('x', 14).html('▲');
+           enter.append('g').attr('class', 'bothways').append('text').attr('y', 40).attr('x', 14).html('▲▼');
+           enter.append('g').attr('class', 'backward').append('text').attr('y', 40).attr('x', 14).html('▼');
+           lane = lane.merge(enter);
+           lane.attr('transform', function (d) {
+             return 'translate(' + LANE_WIDTH * d.index * 1.5 + ', 0)';
+           });
+           lane.select('.forward').style('visibility', function (d) {
+             return d.direction === 'forward' ? 'visible' : 'hidden';
+           });
+           lane.select('.bothways').style('visibility', function (d) {
+             return d.direction === 'bothways' ? 'visible' : 'hidden';
+           });
+           lane.select('.backward').style('visibility', function (d) {
+             return d.direction === 'backward' ? 'visible' : 'hidden';
+           });
+         }
+
+         lanes.entityIDs = function (val) {
+           _entityIDs = val;

          };
 
          };
 

-         var _heading = utilFunctor(null);
+         lanes.tags = function () {};

 
 

-         var _keys = utilFunctor(null);
+         lanes.focus = function () {};

 
 

-         tooltip.title = function (val) {
-           if (!arguments.length) return _title;
-           _title = utilFunctor(val);
-           return tooltip;
-         };
+         lanes.off = function () {};

 
 

-         tooltip.heading = function (val) {
-           if (!arguments.length) return _heading;
-           _heading = utilFunctor(val);
-           return tooltip;
-         };
+         return utilRebind(lanes, dispatch, 'on');
+       }
+       uiFieldLanes.supportsMultiselection = false;

 
 

-         tooltip.keys = function (val) {
-           if (!arguments.length) return _keys;
-           _keys = utilFunctor(val);
-           return tooltip;
-         };
+       var _languagesArray = [];
+       function uiFieldLocalized(field, context) {
+         var dispatch = dispatch$8('change', 'input');
+         var wikipedia = services.wikipedia;
+         var input = select(null);
+         var localizedInputs = select(null);

 
 

-         tooltip.content(function () {
-           var heading = _heading.apply(this, arguments);
+         var _countryCode;

 
 

-           var text = _title.apply(this, arguments);
+         var _tags; // A concern here in switching to async data means that _languagesArray will not
+         // be available the first time through, so things like the fetchers and
+         // the language() function will not work immediately.

 
 

-           var keys = _keys.apply(this, arguments);

 
 

-           return function (selection) {
-             var headingSelect = selection.selectAll('.tooltip-heading').data(heading ? [heading] : []);
-             headingSelect.exit().remove();
-             headingSelect.enter().append('div').attr('class', 'tooltip-heading').merge(headingSelect).html(heading);
-             var textSelect = selection.selectAll('.tooltip-text').data(text ? [text] : []);
-             textSelect.exit().remove();
-             textSelect.enter().append('div').attr('class', 'tooltip-text').merge(textSelect).html(text);
-             var keyhintWrap = selection.selectAll('.keyhint-wrap').data(keys && keys.length ? [0] : []);
-             keyhintWrap.exit().remove();
-             var keyhintWrapEnter = keyhintWrap.enter().append('div').attr('class', 'keyhint-wrap');
-             keyhintWrapEnter.append('span').html(_t.html('tooltip_keyhint'));
-             keyhintWrap = keyhintWrapEnter.merge(keyhintWrap);
-             keyhintWrap.selectAll('kbd.shortcut').data(keys && keys.length ? keys : []).enter().append('kbd').attr('class', 'shortcut').html(function (d) {
-               return d;
-             });
-           };
+         _mainFileFetcher.get('languages').then(loadLanguagesArray)["catch"](function () {
+           /* ignore */

          });
          });

-         return tooltip;
-       }
+         var _territoryLanguages = {};
+         _mainFileFetcher.get('territory_languages').then(function (d) {
+           _territoryLanguages = d;
+         })["catch"](function () {
+           /* ignore */
+         }); // reuse these combos

 
 

-       function uiEditMenu(context) {
-         var dispatch$1 = dispatch('toggled');
+         var langCombo = uiCombobox(context, 'localized-lang').fetcher(fetchLanguages).minItems(0);

 
 

-         var _menu = select(null);
+         var _selection = select(null);

 
 

-         var _operations = []; // the position the menu should be displayed relative to
+         var _multilingual = [];

 
 

-         var _anchorLoc = [0, 0];
-         var _anchorLocLonLat = [0, 0]; // a string indicating how the menu was opened
+         var _buttonTip = uiTooltip().title(_t.html('translate.translate')).placement('left');

 
 

-         var _triggerType = '';
-         var _vpTopMargin = 85; // viewport top margin
+         var _wikiTitles;

 
 

-         var _vpBottomMargin = 45; // viewport bottom margin
+         var _entityIDs = [];

 
 

-         var _vpSideMargin = 35; // viewport side margin
+         function loadLanguagesArray(dataLanguages) {
+           if (_languagesArray.length !== 0) return; // some conversion is needed to ensure correct OSM tags are used

 
 

-         var _menuTop = false;
+           var replacements = {
+             sr: 'sr-Cyrl',
+             // in OSM, `sr` implies Cyrillic
+             'sr-Cyrl': false // `sr-Cyrl` isn't used in OSM

 
 

-         var _menuHeight;
+           };

 
 

-         var _menuWidth; // hardcode these values to make menu positioning easier
+           for (var code in dataLanguages) {
+             if (replacements[code] === false) continue;
+             var metaCode = code;
+             if (replacements[code]) metaCode = replacements[code];

 
 

+             _languagesArray.push({
+               localName: _mainLocalizer.languageName(metaCode, {
+                 localOnly: true
+               }),
+               nativeName: dataLanguages[metaCode].nativeName,
+               code: code,
+               label: _mainLocalizer.languageName(metaCode)
+             });
+           }
+         }

 
 

-         var _verticalPadding = 4; // see also `.edit-menu .tooltip` CSS; include margin
+         function calcLocked() {
+           // Protect name field for suggestion presets that don't display a brand/operator field
+           var isLocked = field.id === 'name' && _entityIDs.length && _entityIDs.some(function (entityID) {
+             var entity = context.graph().hasEntity(entityID);
+             if (!entity) return false; // Features linked to Wikidata are likely important and should be protected

 
 

-         var _tooltipWidth = 210; // offset the menu slightly from the target location
+             if (entity.tags.wikidata) return true; // Assume the name has already been confirmed if its source has been researched

 
 

-         var _menuSideMargin = 10;
-         var _tooltips = [];
+             if (entity.tags['name:etymology:wikidata']) return true; // Lock the `name` if this is a suggestion preset that assigns the name,
+             // and the preset does not display a `brand` or `operator` field.
+             // (For presets like hotels, car dealerships, post offices, the `name` should remain editable)
+             // see also similar logic in `outdated_tags.js`

 
 

-         var editMenu = function editMenu(selection) {
-           var isTouchMenu = _triggerType.includes('touch') || _triggerType.includes('pen');
+             var preset = _mainPresetIndex.match(entity, context.graph());

 
 

-           var ops = _operations.filter(function (op) {
-             return !isTouchMenu || !op.mouseOnly;
+             if (preset) {
+               var isSuggestion = preset.suggestion;
+               var fields = preset.fields();
+               var showsBrandField = fields.some(function (d) {
+                 return d.id === 'brand';
+               });
+               var showsOperatorField = fields.some(function (d) {
+                 return d.id === 'operator';
+               });
+               var setsName = preset.addTags.name;
+               var setsBrandWikidata = preset.addTags['brand:wikidata'];
+               var setsOperatorWikidata = preset.addTags['operator:wikidata'];
+               return isSuggestion && setsName && (setsBrandWikidata && !showsBrandField || setsOperatorWikidata && !showsOperatorField);
+             }
+
+             return false;

            });
 
            });
 

-           if (!ops.length) return;
-           _tooltips = []; // Position the menu above the anchor for stylus and finger input
-           // since the mapper's hand likely obscures the screen below the anchor
+           field.locked(isLocked);
+         } // update _multilingual, maintaining the existing order

 
 

-           _menuTop = isTouchMenu; // Show labels for touch input since there aren't hover tooltips

 
 

-           var showLabels = isTouchMenu;
-           var buttonHeight = showLabels ? 32 : 34;
+         function calcMultilingual(tags) {
+           var existingLangsOrdered = _multilingual.map(function (item) {
+             return item.lang;
+           });

 
 

-           if (showLabels) {
-             // Get a general idea of the width based on the length of the label
-             _menuWidth = 52 + Math.min(120, 6 * Math.max.apply(Math, ops.map(function (op) {
-               return op.title.length;
-             })));
-           } else {
-             _menuWidth = 44;
-           }
+           var existingLangs = new Set(existingLangsOrdered.filter(Boolean));

 
 

-           _menuHeight = _verticalPadding * 2 + ops.length * buttonHeight;
-           _menu = selection.append('div').attr('class', 'edit-menu').classed('touch-menu', isTouchMenu).style('padding', _verticalPadding + 'px 0');
+           for (var k in tags) {
+             var m = k.match(/^(.*):(.*)$/);

 
 

-           var buttons = _menu.selectAll('.edit-menu-item').data(ops); // enter
+             if (m && m[1] === field.key && m[2]) {
+               var item = {
+                 lang: m[2],
+                 value: tags[k]
+               };
+
+               if (existingLangs.has(item.lang)) {
+                 // update the value
+                 _multilingual[existingLangsOrdered.indexOf(item.lang)].value = item.value;
+                 existingLangs["delete"](item.lang);
+               } else {
+                 _multilingual.push(item);
+               }
+             }
+           } // Don't remove items based on deleted tags, since this makes the UI
+           // disappear unexpectedly when clearing values - #8164

 
 
 
 

-           var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
-             return 'edit-menu-item edit-menu-item-' + d.id;
-           }).style('height', buttonHeight + 'px').on('click', click) // don't listen for `mouseup` because we only care about non-mouse pointer types
-           .on('pointerup', pointerup).on('pointerdown mousedown', function pointerdown(d3_event) {
-             // don't let button presses also act as map input - #1869
-             d3_event.stopPropagation();
-           }).on('mouseenter.highlight', function (d3_event, d) {
-             if (!d.relatedEntityIds || select(this).classed('disabled')) return;
-             utilHighlightEntities(d.relatedEntityIds(), true, context);
-           }).on('mouseleave.highlight', function (d3_event, d) {
-             if (!d.relatedEntityIds) return;
-             utilHighlightEntities(d.relatedEntityIds(), false, context);
+           _multilingual.forEach(function (item) {
+             if (item.lang && existingLangs.has(item.lang)) {
+               item.value = '';
+             }

            });
            });

-           buttonsEnter.each(function (d) {
-             var tooltip = uiTooltip().heading(d.title).title(d.tooltip()).keys([d.keys[0]]);
+         }

 
 

-             _tooltips.push(tooltip);
+         function localized(selection) {
+           _selection = selection;
+           calcLocked();
+           var isLocked = field.locked();
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]); // enter/update

 
 

-             select(this).call(tooltip).append('div').attr('class', 'icon-wrap').call(svgIcon('#iD-operation-' + d.id, 'operation'));
-           });
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           input = wrap.selectAll('.localized-main').data([0]); // enter/update

 
 

-           if (showLabels) {
-             buttonsEnter.append('span').attr('class', 'label').html(function (d) {
-               return d.title;
+           input = input.enter().append('input').attr('type', 'text').attr('id', field.domId).attr('class', 'localized-main').call(utilNoAuto).merge(input);
+           input.classed('disabled', !!isLocked).attr('readonly', isLocked || null).on('input', change(true)).on('blur', change()).on('change', change());
+           var translateButton = wrap.selectAll('.localized-add').data([0]);
+           translateButton = translateButton.enter().append('button').attr('class', 'localized-add form-field-button').call(svgIcon('#iD-icon-plus')).merge(translateButton);
+           translateButton.classed('disabled', !!isLocked).call(isLocked ? _buttonTip.destroy : _buttonTip).on('click', addNew);
+
+           if (_tags && !_multilingual.length) {
+             calcMultilingual(_tags);
+           }
+
+           localizedInputs = selection.selectAll('.localized-multilingual').data([0]);
+           localizedInputs = localizedInputs.enter().append('div').attr('class', 'localized-multilingual').merge(localizedInputs);
+           localizedInputs.call(renderMultilingual);
+           localizedInputs.selectAll('button, input').classed('disabled', !!isLocked).attr('readonly', isLocked || null);
+
+           function addNew(d3_event) {
+             d3_event.preventDefault();
+             if (field.locked()) return;
+             var defaultLang = _mainLocalizer.languageCode().toLowerCase();
+
+             var langExists = _multilingual.find(function (datum) {
+               return datum.lang === defaultLang;

              });
              });

-           } // update

 
 

+             var isLangEn = defaultLang.indexOf('en') > -1;

 
 

-           buttonsEnter.merge(buttons).classed('disabled', function (d) {
-             return d.disabled();
-           });
-           updatePosition();
-           var initialScale = context.projection.scale();
-           context.map().on('move.edit-menu', function () {
-             if (initialScale !== context.projection.scale()) {
-               editMenu.close();
+             if (isLangEn || langExists) {
+               defaultLang = '';
+               langExists = _multilingual.find(function (datum) {
+                 return datum.lang === defaultLang;
+               });

              }
              }

-           }).on('drawn.edit-menu', function (info) {
-             if (info.full) updatePosition();
-           });
-           var lastPointerUpType; // `pointerup` is always called before `click`

 
 

-           function pointerup(d3_event) {
-             lastPointerUpType = d3_event.pointerType;
-           }
-
-           function click(d3_event, operation) {
-             d3_event.stopPropagation();
+             if (!langExists) {
+               // prepend the value so it appears at the top
+               _multilingual.unshift({
+                 lang: defaultLang,
+                 value: ''
+               });

 
 

-             if (operation.relatedEntityIds) {
-               utilHighlightEntities(operation.relatedEntityIds(), false, context);
+               localizedInputs.call(renderMultilingual);

              }
              }

+           }

 
 

-             if (operation.disabled()) {
-               if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
-                 // there are no tooltips for touch interactions so flash feedback instead
-                 context.ui().flash.duration(4000).iconName('#iD-operation-' + operation.id).iconClass('operation disabled').label(operation.tooltip)();
-               }
-             } else {
-               if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
-                 context.ui().flash.duration(2000).iconName('#iD-operation-' + operation.id).iconClass('operation').label(operation.annotation() || operation.title)();
+           function change(onInput) {
+             return function (d3_event) {
+               if (field.locked()) {
+                 d3_event.preventDefault();
+                 return;

                }
 
                }
 

-               operation();
-               editMenu.close();
-             }
+               var val = utilGetSetValue(select(this));
+               if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string

 
 

-             lastPointerUpType = null;
+               if (!val && Array.isArray(_tags[field.key])) return;
+               var t = {};
+               t[field.key] = val || undefined;
+               dispatch.call('change', this, t, onInput);
+             };

            }
            }

+         }

 
 

-           dispatch$1.call('toggled', this, true);
-         };
+         function key(lang) {
+           return field.key + ':' + lang;
+         }

 
 

-         function updatePosition() {
-           if (!_menu || _menu.empty()) return;
-           var anchorLoc = context.projection(_anchorLocLonLat);
-           var viewport = context.surfaceRect();
+         function changeLang(d3_event, d) {
+           var tags = {}; // make sure unrecognized suffixes are lowercase - #7156

 
 

-           if (anchorLoc[0] < 0 || anchorLoc[0] > viewport.width || anchorLoc[1] < 0 || anchorLoc[1] > viewport.height) {
-             // close the menu if it's gone offscreen
-             editMenu.close();
-             return;
+           var lang = utilGetSetValue(select(this)).toLowerCase();
+
+           var language = _languagesArray.find(function (d) {
+             return d.label.toLowerCase() === lang || d.localName && d.localName.toLowerCase() === lang || d.nativeName && d.nativeName.toLowerCase() === lang;
+           });
+
+           if (language) lang = language.code;
+
+           if (d.lang && d.lang !== lang) {
+             tags[key(d.lang)] = undefined;

            }
 
            }
 

-           var menuLeft = displayOnLeft(viewport);
-           var offset = [0, 0];
-           offset[0] = menuLeft ? -1 * (_menuSideMargin + _menuWidth) : _menuSideMargin;
+           var newKey = lang && context.cleanTagKey(key(lang));
+           var value = utilGetSetValue(select(this.parentNode).selectAll('.localized-value'));

 
 

-           if (_menuTop) {
-             if (anchorLoc[1] - _menuHeight < _vpTopMargin) {
-               // menu is near top viewport edge, shift downward
-               offset[1] = -anchorLoc[1] + _vpTopMargin;
-             } else {
-               offset[1] = -_menuHeight;
-             }
-           } else {
-             if (anchorLoc[1] + _menuHeight > viewport.height - _vpBottomMargin) {
-               // menu is near bottom viewport edge, shift upwards
-               offset[1] = -anchorLoc[1] - _menuHeight + viewport.height - _vpBottomMargin;
-             } else {
-               offset[1] = 0;
-             }
+           if (newKey && value) {
+             tags[newKey] = value;
+           } else if (newKey && _wikiTitles && _wikiTitles[d.lang]) {
+             tags[newKey] = _wikiTitles[d.lang];

            }
 
            }
 

-           var origin = geoVecAdd(anchorLoc, offset);
+           d.lang = lang;
+           dispatch.call('change', this, tags);
+         }

 
 

-           _menu.style('left', origin[0] + 'px').style('top', origin[1] + 'px');
+         function changeValue(d3_event, d) {
+           if (!d.lang) return;
+           var value = context.cleanTagValue(utilGetSetValue(select(this))) || undefined; // don't override multiple values with blank string

 
 

-           var tooltipSide = tooltipPosition(viewport, menuLeft);
+           if (!value && Array.isArray(d.value)) return;
+           var t = {};
+           t[key(d.lang)] = value;
+           d.value = value;
+           dispatch.call('change', this, t);
+         }

 
 

-           _tooltips.forEach(function (tooltip) {
-             tooltip.placement(tooltipSide);
-           });
+         function fetchLanguages(value, cb) {
+           var v = value.toLowerCase(); // show the user's language first

 
 

-           function displayOnLeft(viewport) {
-             if (_mainLocalizer.textDirection() === 'ltr') {
-               if (anchorLoc[0] + _menuSideMargin + _menuWidth > viewport.width - _vpSideMargin) {
-                 // right menu would be too close to the right viewport edge, go left
-                 return true;
-               } // prefer right menu
+           var langCodes = [_mainLocalizer.localeCode(), _mainLocalizer.languageCode()];

 
 

+           if (_countryCode && _territoryLanguages[_countryCode]) {
+             langCodes = langCodes.concat(_territoryLanguages[_countryCode]);
+           }

 
 

-               return false;
-             } else {
-               // rtl
-               if (anchorLoc[0] - _menuSideMargin - _menuWidth < _vpSideMargin) {
-                 // left menu would be too close to the left viewport edge, go right
-                 return false;
-               } // prefer left menu
+           var langItems = [];
+           langCodes.forEach(function (code) {
+             var langItem = _languagesArray.find(function (item) {
+               return item.code === code;
+             });

 
 

+             if (langItem) langItems.push(langItem);
+           });
+           langItems = utilArrayUniq(langItems.concat(_languagesArray));
+           cb(langItems.filter(function (d) {
+             return d.label.toLowerCase().indexOf(v) >= 0 || d.localName && d.localName.toLowerCase().indexOf(v) >= 0 || d.nativeName && d.nativeName.toLowerCase().indexOf(v) >= 0 || d.code.toLowerCase().indexOf(v) >= 0;
+           }).map(function (d) {
+             return {
+               value: d.label
+             };
+           }));
+         }

 
 

-               return true;
-             }
-           }
+         function renderMultilingual(selection) {
+           var entries = selection.selectAll('div.entry').data(_multilingual, function (d) {
+             return d.lang;
+           });
+           entries.exit().style('top', '0').style('max-height', '240px').transition().duration(200).style('opacity', '0').style('max-height', '0px').remove();
+           var entriesEnter = entries.enter().append('div').attr('class', 'entry').each(function (_, index) {
+             var wrap = select(this);
+             var domId = utilUniqueDomId(index);
+             var label = wrap.append('label').attr('class', 'field-label').attr('for', domId);
+             var text = label.append('span').attr('class', 'label-text');
+             text.append('span').attr('class', 'label-textvalue').html(_t.html('translate.localized_translation_label'));
+             text.append('span').attr('class', 'label-textannotation');
+             label.append('button').attr('class', 'remove-icon-multilingual').on('click', function (d3_event, d) {
+               if (field.locked()) return;
+               d3_event.preventDefault(); // remove the UI item manually

 
 

-           function tooltipPosition(viewport, menuLeft) {
-             if (_mainLocalizer.textDirection() === 'ltr') {
-               if (menuLeft) {
-                 // if there's not room for a right-side menu then there definitely
-                 // isn't room for right-side tooltips
-                 return 'left';
-               }
+               _multilingual.splice(_multilingual.indexOf(d), 1);

 
 

-               if (anchorLoc[0] + _menuSideMargin + _menuWidth + _tooltipWidth > viewport.width - _vpSideMargin) {
-                 // right tooltips would be too close to the right viewport edge, go left
-                 return 'left';
-               } // prefer right tooltips
+               var langKey = d.lang && key(d.lang);

 
 

+               if (langKey && langKey in _tags) {
+                 delete _tags[langKey]; // remove from entity tags

 
 

-               return 'right';
-             } else {
-               // rtl
-               if (!menuLeft) {
-                 return 'right';
+                 var t = {};
+                 t[langKey] = undefined;
+                 dispatch.call('change', this, t);
+                 return;

                }
 
                }
 

-               if (anchorLoc[0] - _menuSideMargin - _menuWidth - _tooltipWidth < _vpSideMargin) {
-                 // left tooltips would be too close to the left viewport edge, go right
-                 return 'right';
-               } // prefer left tooltips
+               renderMultilingual(selection);
+             }).call(svgIcon('#iD-operation-delete'));
+             wrap.append('input').attr('class', 'localized-lang').attr('id', domId).attr('type', 'text').attr('placeholder', _t('translate.localized_translation_language')).on('blur', changeLang).on('change', changeLang).call(langCombo);
+             wrap.append('input').attr('type', 'text').attr('class', 'localized-value').on('blur', changeValue).on('change', changeValue);
+           });
+           entriesEnter.style('margin-top', '0px').style('max-height', '0px').style('opacity', '0').transition().duration(200).style('margin-top', '10px').style('max-height', '240px').style('opacity', '1').on('end', function () {
+             select(this).style('max-height', '').style('overflow', 'visible');
+           });
+           entries = entries.merge(entriesEnter);
+           entries.order(); // allow removing the entry UIs even if there isn't a tag to remove

 
 

+           entries.classed('present', true);
+           utilGetSetValue(entries.select('.localized-lang'), function (d) {
+             var langItem = _languagesArray.find(function (item) {
+               return item.code === d.lang;
+             });

 
 

-               return 'left';
-             }
-           }
+             if (langItem) return langItem.label;
+             return d.lang;
+           });
+           utilGetSetValue(entries.select('.localized-value'), function (d) {
+             return typeof d.value === 'string' ? d.value : '';
+           }).attr('title', function (d) {
+             return Array.isArray(d.value) ? d.value.filter(Boolean).join('\n') : null;
+           }).attr('placeholder', function (d) {
+             return Array.isArray(d.value) ? _t('inspector.multiple_values') : _t('translate.localized_translation_name');
+           }).classed('mixed', function (d) {
+             return Array.isArray(d.value);
+           });

          }
 
          }
 

-         editMenu.close = function () {
-           context.map().on('move.edit-menu', null).on('drawn.edit-menu', null);
+         localized.tags = function (tags) {
+           _tags = tags; // Fetch translations from wikipedia

 
 

-           _menu.remove();
+           if (typeof tags.wikipedia === 'string' && !_wikiTitles) {
+             _wikiTitles = {};
+             var wm = tags.wikipedia.match(/([^:]+):(.+)/);

 
 

-           _tooltips = [];
-           dispatch$1.call('toggled', this, false);
-         };
+             if (wm && wm[0] && wm[1]) {
+               wikipedia.translations(wm[1], wm[2], function (err, d) {
+                 if (err || !d) return;
+                 _wikiTitles = d;
+               });
+             }
+           }

 
 

-         editMenu.anchorLoc = function (val) {
-           if (!arguments.length) return _anchorLoc;
-           _anchorLoc = val;
-           _anchorLocLonLat = context.projection.invert(_anchorLoc);
-           return editMenu;
+           var isMixed = Array.isArray(tags[field.key]);
+           utilGetSetValue(input, typeof tags[field.key] === 'string' ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder()).classed('mixed', isMixed);
+           calcMultilingual(tags);
+
+           _selection.call(localized);

          };
 
          };
 

-         editMenu.triggerType = function (val) {
-           if (!arguments.length) return _triggerType;
-           _triggerType = val;
-           return editMenu;
+         localized.focus = function () {
+           input.node().focus();

          };
 
          };
 

-         editMenu.operations = function (val) {
-           if (!arguments.length) return _operations;
-           _operations = val;
-           return editMenu;
+         localized.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _multilingual = [];
+           loadCountryCode();
+           return localized;

          };
 
          };
 

-         return utilRebind(editMenu, dispatch$1, 'on');
+         function loadCountryCode() {
+           var extent = combinedEntityExtent();
+           var countryCode = extent && iso1A2Code(extent.center());
+           _countryCode = countryCode && countryCode.toLowerCase();
+         }
+
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
+
+         return utilRebind(localized, dispatch, 'on');

        }
 
        }
 

-       function uiFeatureInfo(context) {
-         function update(selection) {
-           var features = context.features();
-           var stats = features.stats();
-           var count = 0;
-           var hiddenList = features.hidden().map(function (k) {
-             if (stats[k]) {
-               count += stats[k];
-               return _t('inspector.title_count', {
-                 title: _t.html('feature.' + k + '.description'),
-                 count: stats[k]
-               });
-             }
+       function uiFieldRoadheight(field, context) {
+         var dispatch = dispatch$8('change');
+         var primaryUnitInput = select(null);
+         var primaryInput = select(null);
+         var secondaryInput = select(null);
+         var secondaryUnitInput = select(null);
+         var _entityIDs = [];

 
 

-             return null;
-           }).filter(Boolean);
-           selection.html('');
+         var _tags;

 
 

-           if (hiddenList.length) {
-             var tooltipBehavior = uiTooltip().placement('top').title(function () {
-               return hiddenList.join('<br/>');
-             });
-             selection.append('a').attr('class', 'chip').attr('href', '#').html(_t.html('feature_info.hidden_warning', {
-               count: count
-             })).call(tooltipBehavior).on('click', function (d3_event) {
-               tooltipBehavior.hide();
-               d3_event.preventDefault(); // open the Map Data pane
+         var _isImperial;

 
 

-               context.ui().togglePanes(context.container().select('.map-panes .map-data-pane'));
-             });
+         var primaryUnits = [{
+           value: 'm',
+           title: _t('inspector.roadheight.meter')
+         }, {
+           value: 'ft',
+           title: _t('inspector.roadheight.foot')
+         }];
+         var unitCombo = uiCombobox(context, 'roadheight-unit').data(primaryUnits);
+
+         function roadheight(selection) {
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           primaryInput = wrap.selectAll('input.roadheight-number').data([0]);
+           primaryInput = primaryInput.enter().append('input').attr('type', 'text').attr('class', 'roadheight-number').attr('id', field.domId).call(utilNoAuto).merge(primaryInput);
+           primaryInput.on('change', change).on('blur', change);
+           var loc = combinedEntityExtent().center();
+           _isImperial = roadHeightUnit(loc) === 'ft';
+           primaryUnitInput = wrap.selectAll('input.roadheight-unit').data([0]);
+           primaryUnitInput = primaryUnitInput.enter().append('input').attr('type', 'text').attr('class', 'roadheight-unit').call(unitCombo).merge(primaryUnitInput);
+           primaryUnitInput.on('blur', changeUnits).on('change', changeUnits);
+           secondaryInput = wrap.selectAll('input.roadheight-secondary-number').data([0]);
+           secondaryInput = secondaryInput.enter().append('input').attr('type', 'text').attr('class', 'roadheight-secondary-number').call(utilNoAuto).merge(secondaryInput);
+           secondaryInput.on('change', change).on('blur', change);
+           secondaryUnitInput = wrap.selectAll('input.roadheight-secondary-unit').data([0]);
+           secondaryUnitInput = secondaryUnitInput.enter().append('input').attr('type', 'text').call(utilNoAuto).classed('disabled', true).classed('roadheight-secondary-unit', true).attr('readonly', 'readonly').merge(secondaryUnitInput);
+
+           function changeUnits() {
+             _isImperial = utilGetSetValue(primaryUnitInput) === 'ft';
+             utilGetSetValue(primaryUnitInput, _isImperial ? 'ft' : 'm');
+             setUnitSuggestions();
+             change();

            }
            }

+         }

 
 

-           selection.classed('hide', !hiddenList.length);
+         function setUnitSuggestions() {
+           utilGetSetValue(primaryUnitInput, _isImperial ? 'ft' : 'm');

          }
 
          }
 

-         return function (selection) {
-           update(selection);
-           context.features().on('change.feature_info', function () {
-             update(selection);
-           });
-         };
-       }
+         function change() {
+           var tag = {};
+           var primaryValue = utilGetSetValue(primaryInput).trim();
+           var secondaryValue = utilGetSetValue(secondaryInput).trim(); // don't override multiple values with blank string

 
 

-       function uiFlash(context) {
-         var _flashTimer;
+           if (!primaryValue && !secondaryValue && Array.isArray(_tags[field.key])) return;
+
+           if (!primaryValue && !secondaryValue) {
+             tag[field.key] = undefined;
+           } else if (isNaN(primaryValue) || isNaN(secondaryValue) || !_isImperial) {
+             tag[field.key] = context.cleanTagValue(primaryValue);
+           } else {
+             if (primaryValue !== '') {
+               primaryValue = context.cleanTagValue(primaryValue + '\'');
+             }

 
 

-         var _duration = 2000;
-         var _iconName = '#iD-icon-no';
-         var _iconClass = 'disabled';
-         var _label = '';
+             if (secondaryValue !== '') {
+               secondaryValue = context.cleanTagValue(secondaryValue + '"');
+             }

 
 

-         function flash() {
-           if (_flashTimer) {
-             _flashTimer.stop();
+             tag[field.key] = primaryValue + secondaryValue;

            }
 
            }
 

-           context.container().select('.main-footer-wrap').classed('footer-hide', true).classed('footer-show', false);
-           context.container().select('.flash-wrap').classed('footer-hide', false).classed('footer-show', true);
-           var content = context.container().select('.flash-wrap').selectAll('.flash-content').data([0]); // Enter
+           dispatch.call('change', this, tag);
+         }

 
 

-           var contentEnter = content.enter().append('div').attr('class', 'flash-content');
-           var iconEnter = contentEnter.append('svg').attr('class', 'flash-icon icon').append('g').attr('transform', 'translate(10,10)');
-           iconEnter.append('circle').attr('r', 9);
-           iconEnter.append('use').attr('transform', 'translate(-7,-7)').attr('width', '14').attr('height', '14');
-           contentEnter.append('div').attr('class', 'flash-text'); // Update
+         roadheight.tags = function (tags) {
+           _tags = tags;
+           var primaryValue = tags[field.key];
+           var secondaryValue;
+           var isMixed = Array.isArray(primaryValue);

 
 

-           content = content.merge(contentEnter);
-           content.selectAll('.flash-icon').attr('class', 'icon flash-icon ' + (_iconClass || ''));
-           content.selectAll('.flash-icon use').attr('xlink:href', _iconName);
-           content.selectAll('.flash-text').attr('class', 'flash-text').html(_label);
-           _flashTimer = d3_timeout(function () {
-             _flashTimer = null;
-             context.container().select('.main-footer-wrap').classed('footer-hide', false).classed('footer-show', true);
-             context.container().select('.flash-wrap').classed('footer-hide', true).classed('footer-show', false);
-           }, _duration);
-           return content;
-         }
+           if (!isMixed) {
+             if (primaryValue && (primaryValue.indexOf('\'') >= 0 || primaryValue.indexOf('"') >= 0)) {
+               secondaryValue = primaryValue.match(/(-?[\d.]+)"/);

 
 

-         flash.duration = function (_) {
-           if (!arguments.length) return _duration;
-           _duration = _;
-           return flash;
-         };
+               if (secondaryValue !== null) {
+                 secondaryValue = secondaryValue[1];
+               }

 
 

-         flash.label = function (_) {
-           if (!arguments.length) return _label;
-           _label = _;
-           return flash;
+               primaryValue = primaryValue.match(/(-?[\d.]+)'/);
+
+               if (primaryValue !== null) {
+                 primaryValue = primaryValue[1];
+               }
+
+               _isImperial = true;
+             } else if (primaryValue) {
+               _isImperial = false;
+             }
+           }
+
+           setUnitSuggestions();
+           utilGetSetValue(primaryInput, typeof primaryValue === 'string' ? primaryValue : '').attr('title', isMixed ? primaryValue.filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : _t('inspector.unknown')).classed('mixed', isMixed);
+           utilGetSetValue(secondaryInput, typeof secondaryValue === 'string' ? secondaryValue : '').attr('placeholder', isMixed ? _t('inspector.multiple_values') : _isImperial ? '0' : null).classed('mixed', isMixed).classed('disabled', !_isImperial).attr('readonly', _isImperial ? null : 'readonly');
+           secondaryUnitInput.attr('value', _isImperial ? _t('inspector.roadheight.inch') : null);

          };
 
          };
 

-         flash.iconName = function (_) {
-           if (!arguments.length) return _iconName;
-           _iconName = _;
-           return flash;
+         roadheight.focus = function () {
+           primaryInput.node().focus();

          };
 
          };
 

-         flash.iconClass = function (_) {
-           if (!arguments.length) return _iconClass;
-           _iconClass = _;
-           return flash;
+         roadheight.entityIDs = function (val) {
+           _entityIDs = val;

          };
 
          };
 

-         return flash;
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
+
+         return utilRebind(roadheight, dispatch, 'on');

        }
 
        }
 

-       function uiFullScreen(context) {
-         var element = context.container().node(); // var button = d3_select(null);
+       function uiFieldRoadspeed(field, context) {
+         var dispatch = dispatch$8('change');
+         var unitInput = select(null);
+         var input = select(null);
+         var _entityIDs = [];

 
 

-         function getFullScreenFn() {
-           if (element.requestFullscreen) {
-             return element.requestFullscreen;
-           } else if (element.msRequestFullscreen) {
-             return element.msRequestFullscreen;
-           } else if (element.mozRequestFullScreen) {
-             return element.mozRequestFullScreen;
-           } else if (element.webkitRequestFullscreen) {
-             return element.webkitRequestFullscreen;
-           }
-         }
+         var _tags;

 
 

-         function getExitFullScreenFn() {
-           if (document.exitFullscreen) {
-             return document.exitFullscreen;
-           } else if (document.msExitFullscreen) {
-             return document.msExitFullscreen;
-           } else if (document.mozCancelFullScreen) {
-             return document.mozCancelFullScreen;
-           } else if (document.webkitExitFullscreen) {
-             return document.webkitExitFullscreen;
+         var _isImperial;
+
+         var speedCombo = uiCombobox(context, 'roadspeed');
+         var unitCombo = uiCombobox(context, 'roadspeed-unit').data(['km/h', 'mph'].map(comboValues));
+         var metricValues = [20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120];
+         var imperialValues = [5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80];
+
+         function roadspeed(selection) {
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           input = wrap.selectAll('input.roadspeed-number').data([0]);
+           input = input.enter().append('input').attr('type', 'text').attr('class', 'roadspeed-number').attr('id', field.domId).call(utilNoAuto).call(speedCombo).merge(input);
+           input.on('change', change).on('blur', change);
+           var loc = combinedEntityExtent().center();
+           _isImperial = roadSpeedUnit(loc) === 'mph';
+           unitInput = wrap.selectAll('input.roadspeed-unit').data([0]);
+           unitInput = unitInput.enter().append('input').attr('type', 'text').attr('class', 'roadspeed-unit').call(unitCombo).merge(unitInput);
+           unitInput.on('blur', changeUnits).on('change', changeUnits);
+
+           function changeUnits() {
+             _isImperial = utilGetSetValue(unitInput) === 'mph';
+             utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
+             setUnitSuggestions();
+             change();

            }
          }
 
            }
          }
 

-         function isFullScreen() {
-           return document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement;
+         function setUnitSuggestions() {
+           speedCombo.data((_isImperial ? imperialValues : metricValues).map(comboValues));
+           utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');

          }
 
          }
 

-         function isSupported() {
-           return !!getFullScreenFn();
+         function comboValues(d) {
+           return {
+             value: d.toString(),
+             title: d.toString()
+           };

          }
 
          }
 

-         function fullScreen(d3_event) {
-           d3_event.preventDefault();
+         function change() {
+           var tag = {};
+           var value = utilGetSetValue(input).trim(); // don't override multiple values with blank string

 
 

-           if (!isFullScreen()) {
-             // button.classed('active', true);
-             getFullScreenFn().apply(element);
+           if (!value && Array.isArray(_tags[field.key])) return;
+
+           if (!value) {
+             tag[field.key] = undefined;
+           } else if (isNaN(value) || !_isImperial) {
+             tag[field.key] = context.cleanTagValue(value);

            } else {
            } else {

-             // button.classed('active', false);
-             getExitFullScreenFn().apply(document);
+             tag[field.key] = context.cleanTagValue(value + ' mph');

            }
            }

+
+           dispatch.call('change', this, tag);

          }
 
          }
 

-         return function () {
-           // selection) {
-           if (!isSupported()) return; // button = selection.append('button')
-           //     .attr('title', t('full_screen'))
-           //     .on('click', fullScreen)
-           //     .call(tooltip);
-           // button.append('span')
-           //     .attr('class', 'icon full-screen');
+         roadspeed.tags = function (tags) {
+           _tags = tags;
+           var value = tags[field.key];
+           var isMixed = Array.isArray(value);

 
 

-           var detected = utilDetect();
-           var keys = detected.os === 'mac' ? [uiCmd('⌃⌘F'), 'f11'] : ['f11'];
-           context.keybinding().on(keys, fullScreen);
+           if (!isMixed) {
+             if (value && value.indexOf('mph') >= 0) {
+               value = parseInt(value, 10).toString();
+               _isImperial = true;
+             } else if (value) {
+               _isImperial = false;
+             }
+           }
+
+           setUnitSuggestions();
+           utilGetSetValue(input, typeof value === 'string' ? value : '').attr('title', isMixed ? value.filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder()).classed('mixed', isMixed);

          };
          };

-       }

 
 

-       function uiGeolocate(context) {
-         var _geolocationOptions = {
-           // prioritize speed and power usage over precision
-           enableHighAccuracy: false,
-           // don't hang indefinitely getting the location
-           timeout: 6000 // 6sec
+         roadspeed.focus = function () {
+           input.node().focus();
+         };

 
 

+         roadspeed.entityIDs = function (val) {
+           _entityIDs = val;

          };
 
          };
 

-         var _locating = uiLoading(context).message(_t.html('geolocate.locating')).blocking(true);
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }

 
 

-         var _layer = context.layers().layer('geolocate');
+         return utilRebind(roadspeed, dispatch, 'on');
+       }

 
 

-         var _position;
+       function uiFieldRadio(field, context) {
+         var dispatch = dispatch$8('change');
+         var placeholder = select(null);
+         var wrap = select(null);
+         var labels = select(null);
+         var radios = select(null);
+         var radioData = (field.options || field.keys).slice(); // shallow copy

 
 

-         var _extent;
+         var typeField;
+         var layerField;
+         var _oldType = {};
+         var _entityIDs = [];

 
 

-         var _timeoutID;
+         function selectedKey() {
+           var node = wrap.selectAll('.form-field-input-radio label.active input');
+           return !node.empty() && node.datum();
+         }

 
 

-         var _button = select(null);
+         function radio(selection) {
+           selection.classed('preset-radio', true);
+           wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           var enter = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-radio');
+           enter.append('span').attr('class', 'placeholder');
+           wrap = wrap.merge(enter);
+           placeholder = wrap.selectAll('.placeholder');
+           labels = wrap.selectAll('label').data(radioData);
+           enter = labels.enter().append('label');
+           enter.append('input').attr('type', 'radio').attr('name', field.id).attr('value', function (d) {
+             return field.t('options.' + d, {
+               'default': d
+             });
+           }).attr('checked', false);
+           enter.append('span').html(function (d) {
+             return field.t.html('options.' + d, {
+               'default': d
+             });
+           });
+           labels = labels.merge(enter);
+           radios = labels.selectAll('input').on('change', changeRadio);
+         }

 
 

-         function click() {
-           if (context.inIntro()) return;
+         function structureExtras(selection, tags) {
+           var selected = selectedKey() || tags.layer !== undefined;
+           var type = _mainPresetIndex.field(selected);
+           var layer = _mainPresetIndex.field('layer');
+           var showLayer = selected === 'bridge' || selected === 'tunnel' || tags.layer !== undefined;
+           var extrasWrap = selection.selectAll('.structure-extras-wrap').data(selected ? [0] : []);
+           extrasWrap.exit().remove();
+           extrasWrap = extrasWrap.enter().append('div').attr('class', 'structure-extras-wrap').merge(extrasWrap);
+           var list = extrasWrap.selectAll('ul').data([0]);
+           list = list.enter().append('ul').attr('class', 'rows').merge(list); // Type

 
 

-           if (!_layer.enabled() && !_locating.isShown()) {
-             // This timeout ensures that we still call finish() even if
-             // the user declines to share their location in Firefox
-             _timeoutID = setTimeout(error, 10000
-             /* 10sec */
-             );
-             context.container().call(_locating); // get the latest position even if we already have one
+           if (type) {
+             if (!typeField || typeField.id !== selected) {
+               typeField = uiField(context, type, _entityIDs, {
+                 wrap: false
+               }).on('change', changeType);
+             }

 
 

-             navigator.geolocation.getCurrentPosition(success, error, _geolocationOptions);
+             typeField.tags(tags);

            } else {
            } else {

-             _locating.close();
-
-             _layer.enabled(null, false);
-
-             updateButtonState();
+             typeField = null;

            }
            }

-         }
-
-         function zoomTo() {
-           context.enter(modeBrowse(context));
-           var map = context.map();

 
 

-           _layer.enabled(_position, true);
+           var typeItem = list.selectAll('.structure-type-item').data(typeField ? [typeField] : [], function (d) {
+             return d.id;
+           }); // Exit

 
 

-           updateButtonState();
-           map.centerZoomEase(_extent.center(), Math.min(20, map.extentZoom(_extent)));
-         }
+           typeItem.exit().remove(); // Enter

 
 

-         function success(geolocation) {
-           _position = geolocation;
-           var coords = _position.coords;
-           _extent = geoExtent([coords.longitude, coords.latitude]).padByMeters(coords.accuracy);
-           zoomTo();
-           finish();
-         }
+           var typeEnter = typeItem.enter().insert('li', ':first-child').attr('class', 'labeled-input structure-type-item');
+           typeEnter.append('span').attr('class', 'label structure-label-type').attr('for', 'preset-input-' + selected).html(_t.html('inspector.radio.structure.type'));
+           typeEnter.append('div').attr('class', 'structure-input-type-wrap'); // Update

 
 

-         function error() {
-           if (_position) {
-             // use the position from a previous call if we have one
-             zoomTo();
-           } else {
-             context.ui().flash.label(_t.html('geolocate.location_unavailable')).iconName('#iD-icon-geolocate')();
-           }
+           typeItem = typeItem.merge(typeEnter);

 
 

-           finish();
-         }
+           if (typeField) {
+             typeItem.selectAll('.structure-input-type-wrap').call(typeField.render);
+           } // Layer

 
 

-         function finish() {
-           _locating.close(); // unblock ui

 
 

+           if (layer && showLayer) {
+             if (!layerField) {
+               layerField = uiField(context, layer, _entityIDs, {
+                 wrap: false
+               }).on('change', changeLayer);
+             }

 
 

-           if (_timeoutID) {
-             clearTimeout(_timeoutID);
+             layerField.tags(tags);
+             field.keys = utilArrayUnion(field.keys, ['layer']);
+           } else {
+             layerField = null;
+             field.keys = field.keys.filter(function (k) {
+               return k !== 'layer';
+             });

            }
 
            }
 

-           _timeoutID = undefined;
-         }
-
-         function updateButtonState() {
-           _button.classed('active', _layer.enabled());
-         }
-
-         return function (selection) {
-           if (!navigator.geolocation || !navigator.geolocation.getCurrentPosition) return;
-           _button = selection.append('button').on('click', click).call(svgIcon('#iD-icon-geolocate', 'light')).call(uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(_t.html('geolocate.title')).keys([_t('geolocate.key')]));
-           context.keybinding().on(_t('geolocate.key'), click);
-         };
-       }
+           var layerItem = list.selectAll('.structure-layer-item').data(layerField ? [layerField] : []); // Exit

 
 

-       function uiPanelBackground(context) {
-         var background = context.background();
-         var _currSourceName = null;
-         var _metadata = {};
-         var _metadataKeys = ['zoom', 'vintage', 'source', 'description', 'resolution', 'accuracy'];
+           layerItem.exit().remove(); // Enter

 
 

-         var debouncedRedraw = debounce(redraw, 250);
+           var layerEnter = layerItem.enter().append('li').attr('class', 'labeled-input structure-layer-item');
+           layerEnter.append('span').attr('class', 'label structure-label-layer').attr('for', 'preset-input-layer').html(_t.html('inspector.radio.structure.layer'));
+           layerEnter.append('div').attr('class', 'structure-input-layer-wrap'); // Update

 
 

-         function redraw(selection) {
-           var source = background.baseLayerSource();
-           if (!source) return;
-           var isDG = source.id.match(/^DigitalGlobe/i) !== null;
-           var sourceLabel = source.label();
+           layerItem = layerItem.merge(layerEnter);

 
 

-           if (_currSourceName !== sourceLabel) {
-             _currSourceName = sourceLabel;
-             _metadata = {};
+           if (layerField) {
+             layerItem.selectAll('.structure-input-layer-wrap').call(layerField.render);

            }
            }

+         }

 
 

-           selection.html('');
-           var list = selection.append('ul').attr('class', 'background-info');
-           list.append('li').html(_currSourceName);
-
-           _metadataKeys.forEach(function (k) {
-             // DigitalGlobe vintage is available in raster layers for now.
-             if (isDG && k === 'vintage') return;
-             list.append('li').attr('class', 'background-info-list-' + k).classed('hide', !_metadata[k]).html(_t.html('info_panels.background.' + k) + ':').append('span').attr('class', 'background-info-span-' + k).html(_metadata[k]);
-           });
+         function changeType(t, onInput) {
+           var key = selectedKey();
+           if (!key) return;
+           var val = t[key];

 
 

-           debouncedGetMetadata(selection);
-           var toggleTiles = context.getDebug('tile') ? 'hide_tiles' : 'show_tiles';
-           selection.append('a').html(_t.html('info_panels.background.' + toggleTiles)).attr('href', '#').attr('class', 'button button-toggle-tiles').on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.setDebug('tile', !context.getDebug('tile'));
-             selection.call(redraw);
-           });
+           if (val !== 'no') {
+             _oldType[key] = val;
+           }

 
 

-           if (isDG) {
-             var key = source.id + '-vintage';
-             var sourceVintage = context.background().findSource(key);
-             var showsVintage = context.background().showsLayer(sourceVintage);
-             var toggleVintage = showsVintage ? 'hide_vintage' : 'show_vintage';
-             selection.append('a').html(_t.html('info_panels.background.' + toggleVintage)).attr('href', '#').attr('class', 'button button-toggle-vintage').on('click', function (d3_event) {
-               d3_event.preventDefault();
-               context.background().toggleOverlayLayer(sourceVintage);
-               selection.call(redraw);
-             });
-           } // disable if necessary
+           if (field.type === 'structureRadio') {
+             // remove layer if it should not be set
+             if (val === 'no' || key !== 'bridge' && key !== 'tunnel' || key === 'tunnel' && val === 'building_passage') {
+               t.layer = undefined;
+             } // add layer if it should be set

 
 
 
 

-           ['DigitalGlobe-Premium', 'DigitalGlobe-Standard'].forEach(function (layerId) {
-             if (source.id !== layerId) {
-               var key = layerId + '-vintage';
-               var sourceVintage = context.background().findSource(key);
+             if (t.layer === undefined) {
+               if (key === 'bridge' && val !== 'no') {
+                 t.layer = '1';
+               }

 
 

-               if (context.background().showsLayer(sourceVintage)) {
-                 context.background().toggleOverlayLayer(sourceVintage);
+               if (key === 'tunnel' && val !== 'no' && val !== 'building_passage') {
+                 t.layer = '-1';

                }
              }
                }
              }

-           });
-         }
+           }

 
 

-         var debouncedGetMetadata = debounce(getMetadata, 250);
+           dispatch.call('change', this, t, onInput);
+         }

 
 

-         function getMetadata(selection) {
-           var tile = context.container().select('.layer-background img.tile-center'); // tile near viewport center
+         function changeLayer(t, onInput) {
+           if (t.layer === '0') {
+             t.layer = undefined;
+           }

 
 

-           if (tile.empty()) return;
-           var sourceName = _currSourceName;
-           var d = tile.datum();
-           var zoom = d && d.length >= 3 && d[2] || Math.floor(context.map().zoom());
-           var center = context.map().center(); // update zoom
+           dispatch.call('change', this, t, onInput);
+         }

 
 

-           _metadata.zoom = String(zoom);
-           selection.selectAll('.background-info-list-zoom').classed('hide', false).selectAll('.background-info-span-zoom').html(_metadata.zoom);
-           if (!d || !d.length >= 3) return;
-           background.baseLayerSource().getMetadata(center, d, function (err, result) {
-             if (err || _currSourceName !== sourceName) return; // update vintage
+         function changeRadio() {
+           var t = {};
+           var activeKey;

 
 

-             var vintage = result.vintage;
-             _metadata.vintage = vintage && vintage.range || _t('info_panels.background.unknown');
-             selection.selectAll('.background-info-list-vintage').classed('hide', false).selectAll('.background-info-span-vintage').html(_metadata.vintage); // update other _metadata
+           if (field.key) {
+             t[field.key] = undefined;
+           }

 
 

-             _metadataKeys.forEach(function (k) {
-               if (k === 'zoom' || k === 'vintage') return; // done already
+           radios.each(function (d) {
+             var active = select(this).property('checked');
+             if (active) activeKey = d;

 
 

-               var val = result[k];
-               _metadata[k] = val;
-               selection.selectAll('.background-info-list-' + k).classed('hide', !val).selectAll('.background-info-span-' + k).html(val);
-             });
+             if (field.key) {
+               if (active) t[field.key] = d;
+             } else {
+               var val = _oldType[activeKey] || 'yes';
+               t[d] = active ? val : undefined;
+             }

            });
            });

-         }

 
 

-         var panel = function panel(selection) {
-           selection.call(redraw);
-           context.map().on('drawn.info-background', function () {
-             selection.call(debouncedRedraw);
-           }).on('move.info-background', function () {
-             selection.call(debouncedGetMetadata);
-           });
-         };
+           if (field.type === 'structureRadio') {
+             if (activeKey === 'bridge') {
+               t.layer = '1';
+             } else if (activeKey === 'tunnel' && t.tunnel !== 'building_passage') {
+               t.layer = '-1';
+             } else {
+               t.layer = undefined;
+             }
+           }

 
 

-         panel.off = function () {
-           context.map().on('drawn.info-background', null).on('move.info-background', null);
-         };
+           dispatch.call('change', this, t);
+         }

 
 

-         panel.id = 'background';
-         panel.label = _t.html('info_panels.background.title');
-         panel.key = _t('info_panels.background.key');
-         return panel;
-       }
+         radio.tags = function (tags) {
+           radios.property('checked', function (d) {
+             if (field.key) {
+               return tags[field.key] === d;
+             }

 
 

-       function uiPanelHistory(context) {
-         var osm;
+             return !!(typeof tags[d] === 'string' && tags[d].toLowerCase() !== 'no');
+           });

 
 

-         function displayTimestamp(timestamp) {
-           if (!timestamp) return _t('info_panels.history.unknown');
-           var options = {
-             day: 'numeric',
-             month: 'short',
-             year: 'numeric',
-             hour: 'numeric',
-             minute: 'numeric',
-             second: 'numeric'
-           };
-           var d = new Date(timestamp);
-           if (isNaN(d.getTime())) return _t('info_panels.history.unknown');
-           return d.toLocaleString(_mainLocalizer.localeCode(), options);
-         }
+           function isMixed(d) {
+             if (field.key) {
+               return Array.isArray(tags[field.key]) && tags[field.key].includes(d);
+             }

 
 

-         function displayUser(selection, userName) {
-           if (!userName) {
-             selection.append('span').html(_t.html('info_panels.history.unknown'));
-             return;
+             return Array.isArray(tags[d]);

            }
 
            }
 

-           selection.append('span').attr('class', 'user-name').html(userName);
-           var links = selection.append('div').attr('class', 'links');
+           labels.classed('active', function (d) {
+             if (field.key) {
+               return Array.isArray(tags[field.key]) && tags[field.key].includes(d) || tags[field.key] === d;
+             }

 
 

-           if (osm) {
-             links.append('a').attr('class', 'user-osm-link').attr('href', osm.userURL(userName)).attr('target', '_blank').html('OSM');
+             return Array.isArray(tags[d]) || !!(tags[d] && tags[d].toLowerCase() !== 'no');
+           }).classed('mixed', isMixed).attr('title', function (d) {
+             return isMixed(d) ? _t('inspector.unshared_value_tooltip') : null;
+           });
+           var selection = radios.filter(function () {
+             return this.checked;
+           });
+
+           if (selection.empty()) {
+             placeholder.html(_t.html('inspector.none'));
+           } else {
+             placeholder.html(selection.attr('value'));
+             _oldType[selection.datum()] = tags[selection.datum()];

            }
 
            }
 

-           links.append('a').attr('class', 'user-hdyc-link').attr('href', 'https://hdyc.neis-one.org/?' + userName).attr('target', '_blank').attr('tabindex', -1).html('HDYC');
-         }
+           if (field.type === 'structureRadio') {
+             // For waterways without a tunnel tag, set 'culvert' as
+             // the _oldType to default to if the user picks 'tunnel'
+             if (!!tags.waterway && !_oldType.tunnel) {
+               _oldType.tunnel = 'culvert';
+             }

 
 

-         function displayChangeset(selection, changeset) {
-           if (!changeset) {
-             selection.append('span').html(_t.html('info_panels.history.unknown'));
-             return;
+             wrap.call(structureExtras, tags);

            }
            }

+         };

 
 

-           selection.append('span').attr('class', 'changeset-id').html(changeset);
-           var links = selection.append('div').attr('class', 'links');
+         radio.focus = function () {
+           radios.node().focus();
+         };

 
 

-           if (osm) {
-             links.append('a').attr('class', 'changeset-osm-link').attr('href', osm.changesetURL(changeset)).attr('target', '_blank').html('OSM');
-           }
+         radio.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _oldType = {};
+           return radio;
+         };

 
 

-           links.append('a').attr('class', 'changeset-osmcha-link').attr('href', 'https://osmcha.org/changesets/' + changeset).attr('target', '_blank').html('OSMCha');
-           links.append('a').attr('class', 'changeset-achavi-link').attr('href', 'https://overpass-api.de/achavi/?changeset=' + changeset).attr('target', '_blank').html('Achavi');
-         }
+         radio.isAllowed = function () {
+           return _entityIDs.length === 1;
+         };

 
 

-         function redraw(selection) {
-           var selectedNoteID = context.selectedNoteID();
-           osm = context.connection();
-           var selected, note, entity;
+         return utilRebind(radio, dispatch, 'on');
+       }

 
 

-           if (selectedNoteID && osm) {
-             // selected 1 note
-             selected = [_t('note.note') + ' ' + selectedNoteID];
-             note = osm.getNote(selectedNoteID);
-           } else {
-             // selected 1..n entities
-             selected = context.selectedIDs().filter(function (e) {
-               return context.hasEntity(e);
-             });
+       function uiFieldRestrictions(field, context) {
+         var dispatch = dispatch$8('change');
+         var breathe = behaviorBreathe();
+         corePreferences('turn-restriction-via-way', null); // remove old key

 
 

-             if (selected.length) {
-               entity = context.entity(selected[0]);
-             }
-           }
+         var storedViaWay = corePreferences('turn-restriction-via-way0'); // use new key #6922

 
 

-           var singular = selected.length === 1 ? selected[0] : null;
-           selection.html('');
-           selection.append('h4').attr('class', 'history-heading').html(singular || _t.html('info_panels.selected', {
-             n: selected.length
-           }));
-           if (!singular) return;
+         var storedDistance = corePreferences('turn-restriction-distance');

 
 

-           if (entity) {
-             selection.call(redrawEntity, entity);
-           } else if (note) {
-             selection.call(redrawNote, note);
-           }
-         }
+         var _maxViaWay = storedViaWay !== null ? +storedViaWay : 0;

 
 

-         function redrawNote(selection, note) {
-           if (!note || note.isNew()) {
-             selection.append('div').html(_t.html('info_panels.history.note_no_history'));
-             return;
-           }
+         var _maxDistance = storedDistance ? +storedDistance : 30;

 
 

-           var list = selection.append('ul');
-           list.append('li').html(_t.html('info_panels.history.note_comments') + ':').append('span').html(note.comments.length);
+         var _initialized = false;

 
 

-           if (note.comments.length) {
-             list.append('li').html(_t.html('info_panels.history.note_created_date') + ':').append('span').html(displayTimestamp(note.comments[0].date));
-             list.append('li').html(_t.html('info_panels.history.note_created_user') + ':').call(displayUser, note.comments[0].user);
-           }
+         var _parent = select(null); // the entire field

 
 

-           if (osm) {
-             selection.append('a').attr('class', 'view-history-on-osm').attr('target', '_blank').attr('href', osm.noteURL(note)).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('info_panels.history.note_link_text'));
-           }
-         }

 
 

-         function redrawEntity(selection, entity) {
-           if (!entity || entity.isNew()) {
-             selection.append('div').html(_t.html('info_panels.history.no_history'));
-             return;
-           }
+         var _container = select(null); // just the map

 
 

-           var links = selection.append('div').attr('class', 'links');

 
 

-           if (osm) {
-             links.append('a').attr('class', 'view-history-on-osm').attr('href', osm.historyURL(entity)).attr('target', '_blank').attr('title', _t('info_panels.history.link_text')).html('OSM');
-           }
+         var _oldTurns;

 
 

-           links.append('a').attr('class', 'pewu-history-viewer-link').attr('href', 'https://pewu.github.io/osm-history/#/' + entity.type + '/' + entity.osmId()).attr('target', '_blank').attr('tabindex', -1).html('PeWu');
-           var list = selection.append('ul');
-           list.append('li').html(_t.html('info_panels.history.version') + ':').append('span').html(entity.version);
-           list.append('li').html(_t.html('info_panels.history.last_edit') + ':').append('span').html(displayTimestamp(entity.timestamp));
-           list.append('li').html(_t.html('info_panels.history.edited_by') + ':').call(displayUser, entity.user);
-           list.append('li').html(_t.html('info_panels.history.changeset') + ':').call(displayChangeset, entity.changeset);
-         }
+         var _graph;

 
 

-         var panel = function panel(selection) {
-           selection.call(redraw);
-           context.map().on('drawn.info-history', function () {
-             selection.call(redraw);
-           });
-           context.on('enter.info-history', function () {
-             selection.call(redraw);
-           });
-         };
+         var _vertexID;

 
 

-         panel.off = function () {
-           context.map().on('drawn.info-history', null);
-           context.on('enter.info-history', null);
-         };
+         var _intersection;

 
 

-         panel.id = 'history';
-         panel.label = _t.html('info_panels.history.title');
-         panel.key = _t('info_panels.history.key');
-         return panel;
-       }
+         var _fromWayID;

 
 

-       var OSM_PRECISION = 7;
-       /**
-        * Returns a localized representation of the given length measurement.
-        *
-        * @param {Number} m area in meters
-        * @param {Boolean} isImperial true for U.S. customary units; false for metric
-        */
+         var _lastXPos;

 
 

-       function displayLength(m, isImperial) {
-         var d = m * (isImperial ? 3.28084 : 1);
-         var unit;
+         function restrictions(selection) {
+           _parent = selection; // try to reuse the intersection, but always rebuild it if the graph has changed

 
 

-         if (isImperial) {
-           if (d >= 5280) {
-             d /= 5280;
-             unit = 'miles';
-           } else {
-             unit = 'feet';
-           }
-         } else {
-           if (d >= 1000) {
-             d /= 1000;
-             unit = 'kilometers';
-           } else {
-             unit = 'meters';
-           }
-         }
+           if (_vertexID && (context.graph() !== _graph || !_intersection)) {
+             _graph = context.graph();
+             _intersection = osmIntersection(_graph, _vertexID, _maxDistance);
+           } // It's possible for there to be no actual intersection here.
+           // for example, a vertex of two `highway=path`
+           // In this case, hide the field.

 
 

-         return _t('units.' + unit, {
-           quantity: d.toLocaleString(_mainLocalizer.localeCode(), {
-             maximumSignificantDigits: 4
-           })
-         });
-       }
-       /**
-        * Returns a localized representation of the given area measurement.
-        *
-        * @param {Number} m2 area in square meters
-        * @param {Boolean} isImperial true for U.S. customary units; false for metric
-        */

 
 

-       function displayArea(m2, isImperial) {
-         var locale = _mainLocalizer.localeCode();
-         var d = m2 * (isImperial ? 10.7639111056 : 1);
-         var d1, d2, area;
-         var unit1 = '';
-         var unit2 = '';
+           var isOK = _intersection && _intersection.vertices.length && // has vertices
+           _intersection.vertices // has the vertex that the user selected
+           .filter(function (vertex) {
+             return vertex.id === _vertexID;
+           }).length && _intersection.ways.length > 2 && // has more than 2 ways
+           _intersection.ways // has more than 1 TO way
+           .filter(function (way) {
+             return way.__to;
+           }).length > 1; // Also hide in the case where

 
 

-         if (isImperial) {
-           if (d >= 6969600) {
-             // > 0.25mi² show mi²
-             d1 = d / 27878400;
-             unit1 = 'square_miles';
-           } else {
-             d1 = d;
-             unit1 = 'square_feet';
-           }
+           select(selection.node().parentNode).classed('hide', !isOK); // if form field is hidden or has detached from dom, clean up.

 
 

-           if (d > 4356 && d < 43560000) {
-             // 0.1 - 1000 acres
-             d2 = d / 43560;
-             unit2 = 'acres';
-           }
-         } else {
-           if (d >= 250000) {
-             // > 0.25km² show km²
-             d1 = d / 1000000;
-             unit1 = 'square_kilometers';
-           } else {
-             d1 = d;
-             unit1 = 'square_meters';
+           if (!isOK || !context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode || !selection.node().parentNode.parentNode) {
+             selection.call(restrictions.off);
+             return;

            }
 
            }
 

-           if (d > 1000 && d < 10000000) {
-             // 0.1 - 1000 hectares
-             d2 = d / 10000;
-             unit2 = 'hectares';
-           }
-         }
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           var container = wrap.selectAll('.restriction-container').data([0]); // enter

 
 

-         area = _t('units.' + unit1, {
-           quantity: d1.toLocaleString(locale, {
-             maximumSignificantDigits: 4
-           })
-         });
+           var containerEnter = container.enter().append('div').attr('class', 'restriction-container');
+           containerEnter.append('div').attr('class', 'restriction-help'); // update

 
 

-         if (d2) {
-           return _t('units.area_pair', {
-             area1: area,
-             area2: _t('units.' + unit2, {
-               quantity: d2.toLocaleString(locale, {
-                 maximumSignificantDigits: 2
-               })
-             })
-           });
-         } else {
-           return area;
+           _container = containerEnter.merge(container).call(renderViewer);
+           var controls = wrap.selectAll('.restriction-controls').data([0]); // enter/update
+
+           controls.enter().append('div').attr('class', 'restriction-controls-container').append('div').attr('class', 'restriction-controls').merge(controls).call(renderControls);

          }
          }

-       }

 
 

-       function wrap$2(x, min, max) {
-         var d = max - min;
-         return ((x - min) % d + d) % d + min;
-       }
+         function renderControls(selection) {
+           var distControl = selection.selectAll('.restriction-distance').data([0]);
+           distControl.exit().remove();
+           var distControlEnter = distControl.enter().append('div').attr('class', 'restriction-control restriction-distance');
+           distControlEnter.append('span').attr('class', 'restriction-control-label restriction-distance-label').html(_t.html('restriction.controls.distance') + ':');
+           distControlEnter.append('input').attr('class', 'restriction-distance-input').attr('type', 'range').attr('min', '20').attr('max', '50').attr('step', '5');
+           distControlEnter.append('span').attr('class', 'restriction-distance-text'); // update

 
 

-       function clamp$1(x, min, max) {
-         return Math.max(min, Math.min(x, max));
-       }
+           selection.selectAll('.restriction-distance-input').property('value', _maxDistance).on('input', function () {
+             var val = select(this).property('value');
+             _maxDistance = +val;
+             _intersection = null;

 
 

-       function displayCoordinate(deg, pos, neg) {
-         var locale = _mainLocalizer.localeCode();
-         var min = (Math.abs(deg) - Math.floor(Math.abs(deg))) * 60;
-         var sec = (min - Math.floor(min)) * 60;
-         var displayDegrees = _t('units.arcdegrees', {
-           quantity: Math.floor(Math.abs(deg)).toLocaleString(locale)
-         });
-         var displayCoordinate;
+             _container.selectAll('.layer-osm .layer-turns *').remove();

 
 

-         if (Math.floor(sec) > 0) {
-           displayCoordinate = displayDegrees + _t('units.arcminutes', {
-             quantity: Math.floor(min).toLocaleString(locale)
-           }) + _t('units.arcseconds', {
-             quantity: Math.round(sec).toLocaleString(locale)
-           });
-         } else if (Math.floor(min) > 0) {
-           displayCoordinate = displayDegrees + _t('units.arcminutes', {
-             quantity: Math.round(min).toLocaleString(locale)
-           });
-         } else {
-           displayCoordinate = _t('units.arcdegrees', {
-             quantity: Math.round(Math.abs(deg)).toLocaleString(locale)
-           });
-         }
+             corePreferences('turn-restriction-distance', _maxDistance);

 
 

-         if (deg === 0) {
-           return displayCoordinate;
-         } else {
-           return _t('units.coordinate', {
-             coordinate: displayCoordinate,
-             direction: _t('units.' + (deg > 0 ? pos : neg))
+             _parent.call(restrictions);

            });
            });

-         }
-       }
-       /**
-        * Returns given coordinate pair in degree-minute-second format.
-        *
-        * @param {Array<Number>} coord longitude and latitude
-        */
+           selection.selectAll('.restriction-distance-text').html(displayMaxDistance(_maxDistance));
+           var viaControl = selection.selectAll('.restriction-via-way').data([0]);
+           viaControl.exit().remove();
+           var viaControlEnter = viaControl.enter().append('div').attr('class', 'restriction-control restriction-via-way');
+           viaControlEnter.append('span').attr('class', 'restriction-control-label restriction-via-way-label').html(_t.html('restriction.controls.via') + ':');
+           viaControlEnter.append('input').attr('class', 'restriction-via-way-input').attr('type', 'range').attr('min', '0').attr('max', '2').attr('step', '1');
+           viaControlEnter.append('span').attr('class', 'restriction-via-way-text'); // update

 
 

+           selection.selectAll('.restriction-via-way-input').property('value', _maxViaWay).on('input', function () {
+             var val = select(this).property('value');
+             _maxViaWay = +val;

 
 

-       function dmsCoordinatePair(coord) {
-         return _t('units.coordinate_pair', {
-           latitude: displayCoordinate(clamp$1(coord[1], -90, 90), 'north', 'south'),
-           longitude: displayCoordinate(wrap$2(coord[0], -180, 180), 'east', 'west')
-         });
-       }
-       /**
-        * Returns the given coordinate pair in decimal format.
-        * note: unlocalized to avoid comma ambiguity - see #4765
-        *
-        * @param {Array<Number>} coord longitude and latitude
-        */
+             _container.selectAll('.layer-osm .layer-turns *').remove();

 
 

-       function decimalCoordinatePair(coord) {
-         return _t('units.coordinate_pair', {
-           latitude: clamp$1(coord[1], -90, 90).toFixed(OSM_PRECISION),
-           longitude: wrap$2(coord[0], -180, 180).toFixed(OSM_PRECISION)
-         });
-       }
+             corePreferences('turn-restriction-via-way0', _maxViaWay);

 
 

-       function uiPanelLocation(context) {
-         var currLocation = '';
+             _parent.call(restrictions);
+           });
+           selection.selectAll('.restriction-via-way-text').html(displayMaxVia(_maxViaWay));
+         }

 
 

-         function redraw(selection) {
-           selection.html('');
-           var list = selection.append('ul'); // Mouse coordinates
+         function renderViewer(selection) {
+           if (!_intersection) return;
+           var vgraph = _intersection.graph;
+           var filter = utilFunctor(true);
+           var projection = geoRawMercator(); // Reflow warning: `utilGetDimensions` calls `getBoundingClientRect`
+           // Instead of asking the restriction-container for its dimensions,
+           //  we can ask the .sidebar, which can have its dimensions cached.
+           // width: calc as sidebar - padding
+           // height: hardcoded (from `80_app.css`)
+           // var d = utilGetDimensions(selection);

 
 

-           var coord = context.map().mouseCoordinates();
+           var sdims = utilGetDimensions(context.container().select('.sidebar'));
+           var d = [sdims[0] - 50, 370];
+           var c = geoVecScale(d, 0.5);
+           var z = 22;
+           projection.scale(geoZoomToScale(z)); // Calculate extent of all key vertices

 
 

-           if (coord.some(isNaN)) {
-             coord = context.map().center();
-           }
+           var extent = geoExtent();

 
 

-           list.append('li').html(dmsCoordinatePair(coord)).append('li').html(decimalCoordinatePair(coord)); // Location Info
+           for (var i = 0; i < _intersection.vertices.length; i++) {
+             extent._extend(_intersection.vertices[i].extent());
+           } // If this is a large intersection, adjust zoom to fit extent

 
 

-           selection.append('div').attr('class', 'location-info').html(currLocation || ' ');
-           debouncedGetLocation(selection, coord);
-         }

 
 

-         var debouncedGetLocation = debounce(getLocation, 250);
+           if (_intersection.vertices.length > 1) {
+             var padding = 180; // in z22 pixels

 
 

-         function getLocation(selection, coord) {
-           if (!services.geocoder) {
-             currLocation = _t('info_panels.location.unknown_location');
-             selection.selectAll('.location-info').html(currLocation);
-           } else {
-             services.geocoder.reverse(coord, function (err, result) {
-               currLocation = result ? result.display_name : _t('info_panels.location.unknown_location');
-               selection.selectAll('.location-info').html(currLocation);
-             });
+             var tl = projection([extent[0][0], extent[1][1]]);
+             var br = projection([extent[1][0], extent[0][1]]);
+             var hFactor = (br[0] - tl[0]) / (d[0] - padding);
+             var vFactor = (br[1] - tl[1]) / (d[1] - padding);
+             var hZoomDiff = Math.log(Math.abs(hFactor)) / Math.LN2;
+             var vZoomDiff = Math.log(Math.abs(vFactor)) / Math.LN2;
+             z = z - Math.max(hZoomDiff, vZoomDiff);
+             projection.scale(geoZoomToScale(z));

            }
            }

-         }

 
 

-         var panel = function panel(selection) {
-           selection.call(redraw);
-           context.surface().on(('PointerEvent' in window ? 'pointer' : 'mouse') + 'move.info-location', function () {
-             selection.call(redraw);
-           });
-         };
+           var padTop = 35; // reserve top space for hint text

 
 

-         panel.off = function () {
-           context.surface().on('.info-location', null);
-         };
+           var extentCenter = projection(extent.center());
+           extentCenter[1] = extentCenter[1] - padTop;
+           projection.translate(geoVecSubtract(c, extentCenter)).clipExtent([[0, 0], d]);
+           var drawLayers = svgLayers(projection, context).only(['osm', 'touch']).dimensions(d);
+           var drawVertices = svgVertices(projection, context);
+           var drawLines = svgLines(projection, context);
+           var drawTurns = svgTurns(projection, context);
+           var firstTime = selection.selectAll('.surface').empty();
+           selection.call(drawLayers);
+           var surface = selection.selectAll('.surface').classed('tr', true);

 
 

-         panel.id = 'location';
-         panel.label = _t.html('info_panels.location.title');
-         panel.key = _t('info_panels.location.key');
-         return panel;
-       }
+           if (firstTime) {
+             _initialized = true;
+             surface.call(breathe);
+           } // This can happen if we've lowered the detail while a FROM way
+           // is selected, and that way is no longer part of the intersection.

 
 

-       function uiPanelMeasurement(context) {
-         function radiansToMeters(r) {
-           // using WGS84 authalic radius (6371007.1809 m)
-           return r * 6371007.1809;
-         }

 
 

-         function steradiansToSqmeters(r) {
-           // http://gis.stackexchange.com/a/124857/40446
-           return r / (4 * Math.PI) * 510065621724000;
-         }
+           if (_fromWayID && !vgraph.hasEntity(_fromWayID)) {
+             _fromWayID = null;
+             _oldTurns = null;
+           }

 
 

-         function toLineString(feature) {
-           if (feature.type === 'LineString') return feature;
-           var result = {
-             type: 'LineString',
-             coordinates: []
-           };
+           surface.call(utilSetDimensions, d).call(drawVertices, vgraph, _intersection.vertices, filter, extent, z).call(drawLines, vgraph, _intersection.ways, filter).call(drawTurns, vgraph, _intersection.turns(_fromWayID, _maxViaWay));
+           surface.on('click.restrictions', click).on('mouseover.restrictions', mouseover);
+           surface.selectAll('.selected').classed('selected', false);
+           surface.selectAll('.related').classed('related', false);
+           var way;

 
 

-           if (feature.type === 'Polygon') {
-             result.coordinates = feature.coordinates[0];
-           } else if (feature.type === 'MultiPolygon') {
-             result.coordinates = feature.coordinates[0][0];
+           if (_fromWayID) {
+             way = vgraph.entity(_fromWayID);
+             surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);

            }
 
            }
 

-           return result;
-         }
+           document.addEventListener('resizeWindow', function () {
+             utilSetDimensions(_container, null);
+             redraw(1);
+           }, false);
+           updateHints(null);

 
 

-         function redraw(selection) {
-           var graph = context.graph();
-           var selectedNoteID = context.selectedNoteID();
-           var osm = services.osm;
-           var isImperial = !_mainLocalizer.usesMetric();
-           var localeCode = _mainLocalizer.localeCode();
-           var heading;
-           var center, location, centroid;
-           var closed, geometry;
-           var totalNodeCount,
-               length = 0,
-               area = 0,
-               distance;
+           function click(d3_event) {
+             surface.call(breathe.off).call(breathe);
+             var datum = d3_event.target.__data__;
+             var entity = datum && datum.properties && datum.properties.entity;

 
 

-           if (selectedNoteID && osm) {
-             // selected 1 note
-             var note = osm.getNote(selectedNoteID);
-             heading = _t('note.note') + ' ' + selectedNoteID;
-             location = note.loc;
-             geometry = 'note';
-           } else {
-             // selected 1..n entities
-             var selectedIDs = context.selectedIDs().filter(function (id) {
-               return context.hasEntity(id);
-             });
-             var selected = selectedIDs.map(function (id) {
-               return context.entity(id);
-             });
-             heading = selected.length === 1 ? selected[0].id : _t('info_panels.selected', {
-               n: selected.length
-             });
+             if (entity) {
+               datum = entity;
+             }

 
 

-             if (selected.length) {
-               var extent = geoExtent();
+             if (datum instanceof osmWay && (datum.__from || datum.__via)) {
+               _fromWayID = datum.id;
+               _oldTurns = null;
+               redraw();
+             } else if (datum instanceof osmTurn) {
+               var actions, extraActions, turns, i;
+               var restrictionType = osmInferRestriction(vgraph, datum, projection);
+
+               if (datum.restrictionID && !datum.direct) {
+                 return;
+               } else if (datum.restrictionID && !datum.only) {
+                 // NO -> ONLY
+                 var seen = {};
+                 var datumOnly = JSON.parse(JSON.stringify(datum)); // deep clone the datum
+
+                 datumOnly.only = true; // but change this property

 
 

-               for (var i in selected) {
-                 var entity = selected[i];
+                 restrictionType = restrictionType.replace(/^no/, 'only'); // Adding an ONLY restriction should destroy all other direct restrictions from the FROM towards the VIA.
+                 // We will remember them in _oldTurns, and restore them if the user clicks again.

 
 

-                 extent._extend(entity.extent(graph));
+                 turns = _intersection.turns(_fromWayID, 2);
+                 extraActions = [];
+                 _oldTurns = [];

 
 

-                 geometry = entity.geometry(graph);
+                 for (i = 0; i < turns.length; i++) {
+                   var turn = turns[i];
+                   if (seen[turn.restrictionID]) continue; // avoid deleting the turn twice (#4968, #4928)

 
 

-                 if (geometry === 'line' || geometry === 'area') {
-                   closed = entity.type === 'relation' || entity.isClosed() && !entity.isDegenerate();
-                   var feature = entity.asGeoJSON(graph);
-                   length += radiansToMeters(d3_geoLength(toLineString(feature)));
-                   centroid = d3_geoCentroid(feature);
+                   if (turn.direct && turn.path[1] === datum.path[1]) {
+                     seen[turns[i].restrictionID] = true;
+                     turn.restrictionType = osmInferRestriction(vgraph, turn, projection);

 
 

-                   if (closed) {
-                     area += steradiansToSqmeters(entity.area(graph));
+                     _oldTurns.push(turn);
+
+                     extraActions.push(actionUnrestrictTurn(turn));

                    }
                  }
                    }
                  }

-               }

 
 

-               if (selected.length > 1) {
-                 geometry = null;
-                 closed = null;
-                 centroid = null;
-               }
+                 actions = _intersection.actions.concat(extraActions, [actionRestrictTurn(datumOnly, restrictionType), _t('operations.restriction.annotation.create')]);
+               } else if (datum.restrictionID) {
+                 // ONLY -> Allowed
+                 // Restore whatever restrictions we might have destroyed by cycling thru the ONLY state.
+                 // This relies on the assumption that the intersection was already split up when we
+                 // performed the previous action (NO -> ONLY), so the IDs in _oldTurns shouldn't have changed.
+                 turns = _oldTurns || [];
+                 extraActions = [];

 
 

-               if (selected.length === 2 && selected[0].type === 'node' && selected[1].type === 'node') {
-                 distance = geoSphericalDistance(selected[0].loc, selected[1].loc);
-               }
+                 for (i = 0; i < turns.length; i++) {
+                   if (turns[i].key !== datum.key) {
+                     extraActions.push(actionRestrictTurn(turns[i], turns[i].restrictionType));
+                   }
+                 }

 
 

-               if (selected.length === 1 && selected[0].type === 'node') {
-                 location = selected[0].loc;
+                 _oldTurns = null;
+                 actions = _intersection.actions.concat(extraActions, [actionUnrestrictTurn(datum), _t('operations.restriction.annotation.delete')]);

                } else {
                } else {

-                 totalNodeCount = utilGetAllNodes(selectedIDs, context.graph()).length;
+                 // Allowed -> NO
+                 actions = _intersection.actions.concat([actionRestrictTurn(datum, restrictionType), _t('operations.restriction.annotation.create')]);

                }
 
                }
 

-               if (!location && !centroid) {
-                 center = extent.center();
-               }
+               context.perform.apply(context, actions); // At this point the datum will be changed, but will have same key..
+               // Refresh it and update the help..
+
+               var s = surface.selectAll('.' + datum.key);
+               datum = s.empty() ? null : s.datum();
+               updateHints(datum);
+             } else {
+               _fromWayID = null;
+               _oldTurns = null;
+               redraw();

              }
            }
 
              }
            }
 

-           selection.html('');
-
-           if (heading) {
-             selection.append('h4').attr('class', 'measurement-heading').html(heading);
+           function mouseover(d3_event) {
+             var datum = d3_event.target.__data__;
+             updateHints(datum);

            }
 
            }
 

-           var list = selection.append('ul');
-           var coordItem;
+           _lastXPos = _lastXPos || sdims[0];

 
 

-           if (geometry) {
-             list.append('li').html(_t.html('info_panels.measurement.geometry') + ':').append('span').html(closed ? _t('info_panels.measurement.closed_' + geometry) : _t('geometry.' + geometry));
-           }
+           function redraw(minChange) {
+             var xPos = -1;

 
 

-           if (totalNodeCount) {
-             list.append('li').html(_t.html('info_panels.measurement.node_count') + ':').append('span').html(totalNodeCount.toLocaleString(localeCode));
-           }
+             if (minChange) {
+               xPos = utilGetDimensions(context.container().select('.sidebar'))[0];
+             }

 
 

-           if (area) {
-             list.append('li').html(_t.html('info_panels.measurement.area') + ':').append('span').html(displayArea(area, isImperial));
-           }
+             if (!minChange || minChange && Math.abs(xPos - _lastXPos) >= minChange) {
+               if (context.hasEntity(_vertexID)) {
+                 _lastXPos = xPos;

 
 

-           if (length) {
-             list.append('li').html(_t.html('info_panels.measurement.' + (closed ? 'perimeter' : 'length')) + ':').append('span').html(displayLength(length, isImperial));
+                 _container.call(renderViewer);
+               }
+             }

            }
 
            }
 

-           if (typeof distance === 'number') {
-             list.append('li').html(_t.html('info_panels.measurement.distance') + ':').append('span').html(displayLength(distance, isImperial));
-           }
+           function highlightPathsFrom(wayID) {
+             surface.selectAll('.related').classed('related', false).classed('allow', false).classed('restrict', false).classed('only', false);
+             surface.selectAll('.' + wayID).classed('related', true);

 
 

-           if (location) {
-             coordItem = list.append('li').html(_t.html('info_panels.measurement.location') + ':');
-             coordItem.append('span').html(dmsCoordinatePair(location));
-             coordItem.append('span').html(decimalCoordinatePair(location));
-           }
+             if (wayID) {
+               var turns = _intersection.turns(wayID, _maxViaWay);

 
 

-           if (centroid) {
-             coordItem = list.append('li').html(_t.html('info_panels.measurement.centroid') + ':');
-             coordItem.append('span').html(dmsCoordinatePair(centroid));
-             coordItem.append('span').html(decimalCoordinatePair(centroid));
-           }
+               for (var i = 0; i < turns.length; i++) {
+                 var turn = turns[i];
+                 var ids = [turn.to.way];
+                 var klass = turn.no ? 'restrict' : turn.only ? 'only' : 'allow';

 
 

-           if (center) {
-             coordItem = list.append('li').html(_t.html('info_panels.measurement.center') + ':');
-             coordItem.append('span').html(dmsCoordinatePair(center));
-             coordItem.append('span').html(decimalCoordinatePair(center));
-           }
+                 if (turn.only || turns.length === 1) {
+                   if (turn.via.ways) {
+                     ids = ids.concat(turn.via.ways);
+                   }
+                 } else if (turn.to.way === wayID) {
+                   continue;
+                 }

 
 

-           if (length || area || typeof distance === 'number') {
-             var toggle = isImperial ? 'imperial' : 'metric';
-             selection.append('a').html(_t.html('info_panels.measurement.' + toggle)).attr('href', '#').attr('class', 'button button-toggle-units').on('click', function (d3_event) {
-               d3_event.preventDefault();
-               isImperial = !isImperial;
-               selection.call(redraw);
-             });
+                 surface.selectAll(utilEntitySelector(ids)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only');
+               }
+             }

            }
            }

-         }
-
-         var panel = function panel(selection) {
-           selection.call(redraw);
-           context.map().on('drawn.info-measurement', function () {
-             selection.call(redraw);
-           });
-           context.on('enter.info-measurement', function () {
-             selection.call(redraw);
-           });
-         };
-
-         panel.off = function () {
-           context.map().on('drawn.info-measurement', null);
-           context.on('enter.info-measurement', null);
-         };
-
-         panel.id = 'measurement';
-         panel.label = _t.html('info_panels.measurement.title');
-         panel.key = _t('info_panels.measurement.key');
-         return panel;
-       }
-
-       var uiInfoPanels = {
-         background: uiPanelBackground,
-         history: uiPanelHistory,
-         location: uiPanelLocation,
-         measurement: uiPanelMeasurement
-       };
-
-       function uiInfo(context) {
-         var ids = Object.keys(uiInfoPanels);
-         var wasActive = ['measurement'];
-         var panels = {};
-         var active = {}; // create panels

 
 

-         ids.forEach(function (k) {
-           if (!panels[k]) {
-             panels[k] = uiInfoPanels[k](context);
-             active[k] = false;
-           }
-         });
+           function updateHints(datum) {
+             var help = _container.selectAll('.restriction-help').html('');

 
 

-         function info(selection) {
-           function redraw() {
-             var activeids = ids.filter(function (k) {
-               return active[k];
-             }).sort();
-             var containers = infoPanels.selectAll('.panel-container').data(activeids, function (k) {
-               return k;
-             });
-             containers.exit().style('opacity', 1).transition().duration(200).style('opacity', 0).on('end', function (d) {
-               select(this).call(panels[d].off).remove();
-             });
-             var enter = containers.enter().append('div').attr('class', function (d) {
-               return 'fillD2 panel-container panel-container-' + d;
-             });
-             enter.style('opacity', 0).transition().duration(200).style('opacity', 1);
-             var title = enter.append('div').attr('class', 'panel-title fillD2');
-             title.append('h3').html(function (d) {
-               return panels[d].label;
+             var placeholders = {};
+             ['from', 'via', 'to'].forEach(function (k) {
+               placeholders[k] = '<span class="qualifier">' + _t('restriction.help.' + k) + '</span>';

              });
              });

-             title.append('button').attr('class', 'close').on('click', function (d3_event, d) {
-               d3_event.stopImmediatePropagation();
-               d3_event.preventDefault();
-               info.toggle(d);
-             }).call(svgIcon('#iD-icon-close'));
-             enter.append('div').attr('class', function (d) {
-               return 'panel-content panel-content-' + d;
-             }); // redraw the panels
+             var entity = datum && datum.properties && datum.properties.entity;

 
 

-             infoPanels.selectAll('.panel-content').each(function (d) {
-               select(this).call(panels[d]);
-             });
-           }
+             if (entity) {
+               datum = entity;
+             }

 
 

-           info.toggle = function (which) {
-             var activeids = ids.filter(function (k) {
-               return active[k];
-             });
+             if (_fromWayID) {
+               way = vgraph.entity(_fromWayID);
+               surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
+             } // Hovering a way

 
 

-             if (which) {
-               // toggle one
-               active[which] = !active[which];

 
 

-               if (activeids.length === 1 && activeids[0] === which) {
-                 // none active anymore
-                 wasActive = [which];
-               }
+             if (datum instanceof osmWay && datum.__from) {
+               way = datum;
+               highlightPathsFrom(_fromWayID ? null : way.id);
+               surface.selectAll('.' + way.id).classed('related', true);
+               var clickSelect = !_fromWayID || _fromWayID !== way.id;
+               help.append('div') // "Click to select FROM {fromName}." / "FROM {fromName}"
+               .html(_t.html('restriction.help.' + (clickSelect ? 'select_from_name' : 'from_name'), {
+                 from: placeholders.from,
+                 fromName: displayName(way.id, vgraph)
+               })); // Hovering a turn arrow
+             } else if (datum instanceof osmTurn) {
+               var restrictionType = osmInferRestriction(vgraph, datum, projection);
+               var turnType = restrictionType.replace(/^(only|no)\_/, '');
+               var indirect = datum.direct === false ? _t.html('restriction.help.indirect') : '';
+               var klass, turnText, nextText;

 
 

-               context.container().select('.' + which + '-panel-toggle-item').classed('active', active[which]).select('input').property('checked', active[which]);
-             } else {
-               // toggle all
-               if (activeids.length) {
-                 wasActive = activeids;
-                 activeids.forEach(function (k) {
-                   active[k] = false;
+               if (datum.no) {
+                 klass = 'restrict';
+                 turnText = _t.html('restriction.help.turn.no_' + turnType, {
+                   indirect: indirect
+                 });
+                 nextText = _t.html('restriction.help.turn.only_' + turnType, {
+                   indirect: ''
+                 });
+               } else if (datum.only) {
+                 klass = 'only';
+                 turnText = _t.html('restriction.help.turn.only_' + turnType, {
+                   indirect: indirect
+                 });
+                 nextText = _t.html('restriction.help.turn.allowed_' + turnType, {
+                   indirect: ''

                  });
                } else {
                  });
                } else {

-                 wasActive.forEach(function (k) {
-                   active[k] = true;
+                 klass = 'allow';
+                 turnText = _t.html('restriction.help.turn.allowed_' + turnType, {
+                   indirect: indirect
+                 });
+                 nextText = _t.html('restriction.help.turn.no_' + turnType, {
+                   indirect: ''

                  });
                }
                  });
                }

-             }

 
 

-             redraw();
-           };
+               help.append('div') // "NO Right Turn (indirect)"
+               .attr('class', 'qualifier ' + klass).html(turnText);
+               help.append('div') // "FROM {fromName} TO {toName}"
+               .html(_t.html('restriction.help.from_name_to_name', {
+                 from: placeholders.from,
+                 fromName: displayName(datum.from.way, vgraph),
+                 to: placeholders.to,
+                 toName: displayName(datum.to.way, vgraph)
+               }));

 
 

-           var infoPanels = selection.selectAll('.info-panels').data([0]);
-           infoPanels = infoPanels.enter().append('div').attr('class', 'info-panels').merge(infoPanels);
-           redraw();
-           context.keybinding().on(uiCmd('⌘' + _t('info_panels.key')), function (d3_event) {
-             d3_event.stopImmediatePropagation();
-             d3_event.preventDefault();
-             info.toggle();
-           });
-           ids.forEach(function (k) {
-             var key = _t('info_panels.' + k + '.key', {
-               "default": null
-             });
-             if (!key) return;
-             context.keybinding().on(uiCmd('⌘⇧' + key), function (d3_event) {
-               d3_event.stopImmediatePropagation();
-               d3_event.preventDefault();
-               info.toggle(k);
-             });
-           });
-         }
+               if (datum.via.ways && datum.via.ways.length) {
+                 var names = [];

 
 

-         return info;
-       }
+                 for (var i = 0; i < datum.via.ways.length; i++) {
+                   var prev = names[names.length - 1];
+                   var curr = displayName(datum.via.ways[i], vgraph);

 
 

-       function pointBox(loc, context) {
-         var rect = context.surfaceRect();
-         var point = context.curtainProjection(loc);
-         return {
-           left: point[0] + rect.left - 40,
-           top: point[1] + rect.top - 60,
-           width: 80,
-           height: 90
-         };
-       }
-       function pad(locOrBox, padding, context) {
-         var box;
+                   if (!prev || curr !== prev) {
+                     // collapse identical names
+                     names.push(curr);
+                   }
+                 }

 
 

-         if (locOrBox instanceof Array) {
-           var rect = context.surfaceRect();
-           var point = context.curtainProjection(locOrBox);
-           box = {
-             left: point[0] + rect.left,
-             top: point[1] + rect.top
-           };
-         } else {
-           box = locOrBox;
-         }
+                 help.append('div') // "VIA {viaNames}"
+                 .html(_t.html('restriction.help.via_names', {
+                   via: placeholders.via,
+                   viaNames: names.join(', ')
+                 }));
+               }

 
 

-         return {
-           left: box.left - padding,
-           top: box.top - padding,
-           width: (box.width || 0) + 2 * padding,
-           height: (box.width || 0) + 2 * padding
-         };
-       }
-       function icon(name, svgklass, useklass) {
-         return '<svg class="icon ' + (svgklass || '') + '">' + '<use xlink:href="' + name + '"' + (useklass ? ' class="' + useklass + '"' : '') + '></use></svg>';
-       }
-       var helpStringReplacements; // Returns the localized HTML element for `id` with a standardized set of icon, key, and
-       // label replacements suitable for tutorials and documentation. Optionally supplemented
-       // with custom `replacements`
+               if (!indirect) {
+                 help.append('div') // Click for "No Right Turn"
+                 .html(_t.html('restriction.help.toggle', {
+                   turn: nextText.trim()
+                 }));
+               }

 
 

-       function helpHtml(id, replacements) {
-         // only load these the first time
-         if (!helpStringReplacements) helpStringReplacements = {
-           // insert icons corresponding to various UI elements
-           point_icon: icon('#iD-icon-point', 'inline'),
-           line_icon: icon('#iD-icon-line', 'inline'),
-           area_icon: icon('#iD-icon-area', 'inline'),
-           note_icon: icon('#iD-icon-note', 'inline add-note'),
-           plus: icon('#iD-icon-plus', 'inline'),
-           minus: icon('#iD-icon-minus', 'inline'),
-           layers_icon: icon('#iD-icon-layers', 'inline'),
-           data_icon: icon('#iD-icon-data', 'inline'),
-           inspect: icon('#iD-icon-inspect', 'inline'),
-           help_icon: icon('#iD-icon-help', 'inline'),
-           undo_icon: icon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-redo' : '#iD-icon-undo', 'inline'),
-           redo_icon: icon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-undo' : '#iD-icon-redo', 'inline'),
-           save_icon: icon('#iD-icon-save', 'inline'),
-           // operation icons
-           circularize_icon: icon('#iD-operation-circularize', 'inline operation'),
-           continue_icon: icon('#iD-operation-continue', 'inline operation'),
-           copy_icon: icon('#iD-operation-copy', 'inline operation'),
-           delete_icon: icon('#iD-operation-delete', 'inline operation'),
-           disconnect_icon: icon('#iD-operation-disconnect', 'inline operation'),
-           downgrade_icon: icon('#iD-operation-downgrade', 'inline operation'),
-           extract_icon: icon('#iD-operation-extract', 'inline operation'),
-           merge_icon: icon('#iD-operation-merge', 'inline operation'),
-           move_icon: icon('#iD-operation-move', 'inline operation'),
-           orthogonalize_icon: icon('#iD-operation-orthogonalize', 'inline operation'),
-           paste_icon: icon('#iD-operation-paste', 'inline operation'),
-           reflect_long_icon: icon('#iD-operation-reflect-long', 'inline operation'),
-           reflect_short_icon: icon('#iD-operation-reflect-short', 'inline operation'),
-           reverse_icon: icon('#iD-operation-reverse', 'inline operation'),
-           rotate_icon: icon('#iD-operation-rotate', 'inline operation'),
-           split_icon: icon('#iD-operation-split', 'inline operation'),
-           straighten_icon: icon('#iD-operation-straighten', 'inline operation'),
-           // interaction icons
-           leftclick: icon('#iD-walkthrough-mouse-left', 'inline operation'),
-           rightclick: icon('#iD-walkthrough-mouse-right', 'inline operation'),
-           mousewheel_icon: icon('#iD-walkthrough-mousewheel', 'inline operation'),
-           tap_icon: icon('#iD-walkthrough-tap', 'inline operation'),
-           doubletap_icon: icon('#iD-walkthrough-doubletap', 'inline operation'),
-           longpress_icon: icon('#iD-walkthrough-longpress', 'inline operation'),
-           touchdrag_icon: icon('#iD-walkthrough-touchdrag', 'inline operation'),
-           pinch_icon: icon('#iD-walkthrough-pinch-apart', 'inline operation'),
-           // insert keys; may be localized and platform-dependent
-           shift: uiCmd.display('⇧'),
-           alt: uiCmd.display('⌥'),
-           "return": uiCmd.display('↵'),
-           esc: _t.html('shortcuts.key.esc'),
-           space: _t.html('shortcuts.key.space'),
-           add_note_key: _t.html('modes.add_note.key'),
-           help_key: _t.html('help.key'),
-           shortcuts_key: _t.html('shortcuts.toggle.key'),
-           // reference localized UI labels directly so that they'll always match
-           save: _t.html('save.title'),
-           undo: _t.html('undo.title'),
-           redo: _t.html('redo.title'),
-           upload: _t.html('commit.save'),
-           point: _t.html('modes.add_point.title'),
-           line: _t.html('modes.add_line.title'),
-           area: _t.html('modes.add_area.title'),
-           note: _t.html('modes.add_note.label'),
-           circularize: _t.html('operations.circularize.title'),
-           "continue": _t.html('operations.continue.title'),
-           copy: _t.html('operations.copy.title'),
-           "delete": _t.html('operations.delete.title'),
-           disconnect: _t.html('operations.disconnect.title'),
-           downgrade: _t.html('operations.downgrade.title'),
-           extract: _t.html('operations.extract.title'),
-           merge: _t.html('operations.merge.title'),
-           move: _t.html('operations.move.title'),
-           orthogonalize: _t.html('operations.orthogonalize.title'),
-           paste: _t.html('operations.paste.title'),
-           reflect_long: _t.html('operations.reflect.title.long'),
-           reflect_short: _t.html('operations.reflect.title.short'),
-           reverse: _t.html('operations.reverse.title'),
-           rotate: _t.html('operations.rotate.title'),
-           split: _t.html('operations.split.title'),
-           straighten: _t.html('operations.straighten.title'),
-           map_data: _t.html('map_data.title'),
-           osm_notes: _t.html('map_data.layers.notes.title'),
-           fields: _t.html('inspector.fields'),
-           tags: _t.html('inspector.tags'),
-           relations: _t.html('inspector.relations'),
-           new_relation: _t.html('inspector.new_relation'),
-           turn_restrictions: _t.html('presets.fields.restrictions.label'),
-           background_settings: _t.html('background.description'),
-           imagery_offset: _t.html('background.fix_misalignment'),
-           start_the_walkthrough: _t.html('splash.walkthrough'),
-           help: _t.html('help.title'),
-           ok: _t.html('intro.ok')
-         };
-         var reps;
+               highlightPathsFrom(null);
+               var alongIDs = datum.path.slice();
+               surface.selectAll(utilEntitySelector(alongIDs)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only'); // Hovering empty surface
+             } else {
+               highlightPathsFrom(null);

 
 

-         if (replacements) {
-           reps = Object.assign(replacements, helpStringReplacements);
-         } else {
-           reps = helpStringReplacements;
+               if (_fromWayID) {
+                 help.append('div') // "FROM {fromName}"
+                 .html(_t.html('restriction.help.from_name', {
+                   from: placeholders.from,
+                   fromName: displayName(_fromWayID, vgraph)
+                 }));
+               } else {
+                 help.append('div') // "Click to select a FROM segment."
+                 .html(_t.html('restriction.help.select_from', {
+                   from: placeholders.from
+                 }));
+               }
+             }
+           }

          }
 
          }
 

-         return _t.html(id, reps) // use keyboard key styling for shortcuts
-         .replace(/\`(.*?)\`/g, '<kbd>$1</kbd>');
-       }
-
-       function slugify(text) {
-         return text.toString().toLowerCase().replace(/\s+/g, '-') // Replace spaces with -
-         .replace(/[^\w\-]+/g, '') // Remove all non-word chars
-         .replace(/\-\-+/g, '-') // Replace multiple - with single -
-         .replace(/^-+/, '') // Trim - from start of text
-         .replace(/-+$/, ''); // Trim - from end of text
-       } // console warning for missing walkthrough names
-
-
-       var missingStrings = {};
+         function displayMaxDistance(maxDist) {
+           var isImperial = !_mainLocalizer.usesMetric();
+           var opts;

 
 

-       function checkKey(key, text) {
-         if (_t(key, {
-           "default": undefined
-         }) === undefined) {
-           if (missingStrings.hasOwnProperty(key)) return; // warn once
+           if (isImperial) {
+             var distToFeet = {
+               // imprecise conversion for prettier display
+               20: 70,
+               25: 85,
+               30: 100,
+               35: 115,
+               40: 130,
+               45: 145,
+               50: 160
+             }[maxDist];
+             opts = {
+               distance: _t('units.feet', {
+                 quantity: distToFeet
+               })
+             };
+           } else {
+             opts = {
+               distance: _t('units.meters', {
+                 quantity: maxDist
+               })
+             };
+           }

 
 

-           missingStrings[key] = text;
-           var missing = key + ': ' + text;
-           if (typeof console !== 'undefined') console.log(missing); // eslint-disable-line
+           return _t.html('restriction.controls.distance_up_to', opts);

          }
          }

-       }
-
-       function localize(obj) {
-         var key; // Assign name if entity has one..
-
-         var name = obj.tags && obj.tags.name;

 
 

-         if (name) {
-           key = 'intro.graph.name.' + slugify(name);
-           obj.tags.name = _t(key, {
-             "default": name
-           });
-           checkKey(key, name);
-         } // Assign street name if entity has one..
+         function displayMaxVia(maxVia) {
+           return maxVia === 0 ? _t.html('restriction.controls.via_node_only') : maxVia === 1 ? _t.html('restriction.controls.via_up_to_one') : _t.html('restriction.controls.via_up_to_two');
+         }

 
 

+         function displayName(entityID, graph) {
+           var entity = graph.entity(entityID);
+           var name = utilDisplayName(entity) || '';
+           var matched = _mainPresetIndex.match(entity, graph);
+           var type = matched && matched.name() || utilDisplayType(entity.id);
+           return name || type;
+         }

 
 

-         var street = obj.tags && obj.tags['addr:street'];
+         restrictions.entityIDs = function (val) {
+           _intersection = null;
+           _fromWayID = null;
+           _oldTurns = null;
+           _vertexID = val[0];
+         };

 
 

-         if (street) {
-           key = 'intro.graph.name.' + slugify(street);
-           obj.tags['addr:street'] = _t(key, {
-             "default": street
-           });
-           checkKey(key, street); // Add address details common across walkthrough..
+         restrictions.tags = function () {};

 
 

-           var addrTags = ['block_number', 'city', 'county', 'district', 'hamlet', 'neighbourhood', 'postcode', 'province', 'quarter', 'state', 'subdistrict', 'suburb'];
-           addrTags.forEach(function (k) {
-             var key = 'intro.graph.' + k;
-             var tag = 'addr:' + k;
-             var val = obj.tags && obj.tags[tag];
-             var str = _t(key, {
-               "default": val
-             });
+         restrictions.focus = function () {};

 
 

-             if (str) {
-               if (str.match(/^<.*>$/) !== null) {
-                 delete obj.tags[tag];
-               } else {
-                 obj.tags[tag] = str;
-               }
-             }
-           });
-         }
+         restrictions.off = function (selection) {
+           if (!_initialized) return;
+           selection.selectAll('.surface').call(breathe.off).on('click.restrictions', null).on('mouseover.restrictions', null);
+           select(window).on('resize.restrictions', null);
+         };

 
 

-         return obj;
-       } // Used to detect squareness.. some duplicataion of code from actionOrthogonalize.
+         return utilRebind(restrictions, dispatch, 'on');
+       }
+       uiFieldRestrictions.supportsMultiselection = false;

 
 

-       function isMostlySquare(points) {
-         // note: uses 15 here instead of the 12 from actionOrthogonalize because
-         // actionOrthogonalize can actually straighten some larger angles as it iterates
-         var threshold = 15; // degrees within right or straight
+       function uiFieldTextarea(field, context) {
+         var dispatch = dispatch$8('change');
+         var input = select(null);

 
 

-         var lowerBound = Math.cos((90 - threshold) * Math.PI / 180); // near right
+         var _tags;

 
 

-         var upperBound = Math.cos(threshold * Math.PI / 180); // near straight
+         function textarea(selection) {
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           input = wrap.selectAll('textarea').data([0]);
+           input = input.enter().append('textarea').attr('id', field.domId).call(utilNoAuto).on('input', change(true)).on('blur', change()).on('change', change()).merge(input);
+         }

 
 

-         for (var i = 0; i < points.length; i++) {
-           var a = points[(i - 1 + points.length) % points.length];
-           var origin = points[i];
-           var b = points[(i + 1) % points.length];
-           var dotp = geoVecNormalizedDot(a, b, origin);
-           var mag = Math.abs(dotp);
+         function change(onInput) {
+           return function () {
+             var val = utilGetSetValue(input);
+             if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string

 
 

-           if (mag > lowerBound && mag < upperBound) {
-             return false;
-           }
+             if (!val && Array.isArray(_tags[field.key])) return;
+             var t = {};
+             t[field.key] = val || undefined;
+             dispatch.call('change', this, t, onInput);
+           };

          }
 
          }
 

-         return true;
-       }
-       function selectMenuItem(context, operation) {
-         return context.container().select('.edit-menu .edit-menu-item-' + operation);
-       }
-       function transitionTime(point1, point2) {
-         var distance = geoSphericalDistance(point1, point2);
-         if (distance === 0) return 0;else if (distance < 80) return 500;else return 1000;
-       }
+         textarea.tags = function (tags) {
+           _tags = tags;
+           var isMixed = Array.isArray(tags[field.key]);
+           utilGetSetValue(input, !isMixed && tags[field.key] ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder() || _t('inspector.unknown')).classed('mixed', isMixed);
+         };

 
 

-       function uiCurtain(containerNode) {
-         var surface = select(null),
-             tooltip = select(null),
-             darkness = select(null);
+         textarea.focus = function () {
+           input.node().focus();
+         };

 
 

-         function curtain(selection) {
-           surface = selection.append('svg').attr('class', 'curtain').style('top', 0).style('left', 0);
-           darkness = surface.append('path').attr('x', 0).attr('y', 0).attr('class', 'curtain-darkness');
-           select(window).on('resize.curtain', resize);
-           tooltip = selection.append('div').attr('class', 'tooltip');
-           tooltip.append('div').attr('class', 'popover-arrow');
-           tooltip.append('div').attr('class', 'popover-inner');
-           resize();
+         return utilRebind(textarea, dispatch, 'on');
+       }

 
 

-           function resize() {
-             surface.attr('width', containerNode.clientWidth).attr('height', containerNode.clientHeight);
-             curtain.cut(darkness.datum());
-           }
-         }
-         /**
-          * Reveal cuts the curtain to highlight the given box,
-          * and shows a tooltip with instructions next to the box.
-          *
-          * @param  {String|ClientRect} [box]   box used to cut the curtain
-          * @param  {String}    [text]          text for a tooltip
-          * @param  {Object}    [options]
-          * @param  {string}    [options.tooltipClass]    optional class to add to the tooltip
-          * @param  {integer}   [options.duration]        transition time in milliseconds
-          * @param  {string}    [options.buttonText]      if set, create a button with this text label
-          * @param  {function}  [options.buttonCallback]  if set, the callback for the button
-          * @param  {function}  [options.padding]         extra margin in px to put around bbox
-          * @param  {String|ClientRect} [options.tooltipBox]  box for tooltip position, if different from box for the curtain
-          */
+       var $ = _export;
+       var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+       var toLength = toLength$q;
+       var notARegExp = notARegexp;
+       var requireObjectCoercible = requireObjectCoercible$e;
+       var correctIsRegExpLogic = correctIsRegexpLogic;

 
 

+       // eslint-disable-next-line es/no-string-prototype-endswith -- safe
+       var $endsWith = ''.endsWith;
+       var min = Math.min;

 
 

-         curtain.reveal = function (box, html, options) {
-           options = options || {};
+       var CORRECT_IS_REGEXP_LOGIC = correctIsRegExpLogic('endsWith');
+       // https://github.com/zloirock/core-js/pull/702
+       var MDN_POLYFILL_BUG = !CORRECT_IS_REGEXP_LOGIC && !!function () {
+         var descriptor = getOwnPropertyDescriptor(String.prototype, 'endsWith');
+         return descriptor && !descriptor.writable;
+       }();

 
 

-           if (typeof box === 'string') {
-             box = select(box).node();
-           }
+       // `String.prototype.endsWith` method
+       // https://tc39.es/ecma262/#sec-string.prototype.endswith
+       $({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG && !CORRECT_IS_REGEXP_LOGIC }, {
+         endsWith: function endsWith(searchString /* , endPosition = @length */) {
+           var that = String(requireObjectCoercible(this));
+           notARegExp(searchString);
+           var endPosition = arguments.length > 1 ? arguments[1] : undefined;
+           var len = toLength(that.length);
+           var end = endPosition === undefined ? len : min(toLength(endPosition), len);
+           var search = String(searchString);
+           return $endsWith
+             ? $endsWith.call(that, search, end)
+             : that.slice(end - search.length, end) === search;
+         }
+       });

 
 

-           if (box && box.getBoundingClientRect) {
-             box = copyBox(box.getBoundingClientRect());
-             var containerRect = containerNode.getBoundingClientRect();
-             box.top -= containerRect.top;
-             box.left -= containerRect.left;
-           }
+       function uiFieldWikidata(field, context) {
+         var wikidata = services.wikidata;
+         var dispatch = dispatch$8('change');

 
 

-           if (box && options.padding) {
-             box.top -= options.padding;
-             box.left -= options.padding;
-             box.bottom += options.padding;
-             box.right += options.padding;
-             box.height += options.padding * 2;
-             box.width += options.padding * 2;
-           }
+         var _selection = select(null);

 
 

-           var tooltipBox;
+         var _searchInput = select(null);

 
 

-           if (options.tooltipBox) {
-             tooltipBox = options.tooltipBox;
+         var _qid = null;
+         var _wikidataEntity = null;
+         var _wikiURL = '';
+         var _entityIDs = [];

 
 

-             if (typeof tooltipBox === 'string') {
-               tooltipBox = select(tooltipBox).node();
-             }
+         var _wikipediaKey = field.keys && field.keys.find(function (key) {
+           return key.includes('wikipedia');
+         }),
+             _hintKey = field.key === 'wikidata' ? 'name' : field.key.split(':')[0];

 
 

-             if (tooltipBox && tooltipBox.getBoundingClientRect) {
-               tooltipBox = copyBox(tooltipBox.getBoundingClientRect());
+         var combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(true).minItems(1);
+
+         function wiki(selection) {
+           _selection = selection;
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
+           var list = wrap.selectAll('ul').data([0]);
+           list = list.enter().append('ul').attr('class', 'rows').merge(list);
+           var searchRow = list.selectAll('li.wikidata-search').data([0]);
+           var searchRowEnter = searchRow.enter().append('li').attr('class', 'wikidata-search');
+           searchRowEnter.append('input').attr('type', 'text').attr('id', field.domId).style('flex', '1').call(utilNoAuto).on('focus', function () {
+             var node = select(this).node();
+             node.setSelectionRange(0, node.value.length);
+           }).on('blur', function () {
+             setLabelForEntity();
+           }).call(combobox.fetcher(fetchWikidataItems));
+           combobox.on('accept', function (d) {
+             if (d) {
+               _qid = d.id;
+               change();

              }
              }

-           } else {
-             tooltipBox = box;
-           }
+           }).on('cancel', function () {
+             setLabelForEntity();
+           });
+           searchRowEnter.append('button').attr('class', 'form-field-button wiki-link').attr('title', _t('icons.view_on', {
+             domain: 'wikidata.org'
+           })).call(svgIcon('#iD-icon-out-link')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             if (_wikiURL) window.open(_wikiURL, '_blank');
+           });
+           searchRow = searchRow.merge(searchRowEnter);
+           _searchInput = searchRow.select('input');
+           var wikidataProperties = ['description', 'identifier'];
+           var items = list.selectAll('li.labeled-input').data(wikidataProperties); // Enter

 
 

-           if (tooltipBox && html) {
-             if (html.indexOf('**') !== -1) {
-               if (html.indexOf('<span') === 0) {
-                 html = html.replace(/^(<span.*?>)(.+?)(\*\*)/, '$1<span>$2</span>$3');
-               } else {
-                 html = html.replace(/^(.+?)(\*\*)/, '<span>$1</span>$2');
-               } // pseudo markdown bold text for the instruction section..
+           var enter = items.enter().append('li').attr('class', function (d) {
+             return 'labeled-input preset-wikidata-' + d;
+           });
+           enter.append('span').attr('class', 'label').html(function (d) {
+             return _t.html('wikidata.' + d);
+           });
+           enter.append('input').attr('type', 'text').call(utilNoAuto).classed('disabled', 'true').attr('readonly', 'true');
+           enter.append('button').attr('class', 'form-field-button').attr('title', _t('icons.copy')).call(svgIcon('#iD-operation-copy')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             select(this.parentNode).select('input').node().select();
+             document.execCommand('copy');
+           });
+         }

 
 

+         function fetchWikidataItems(q, callback) {
+           if (!q && _hintKey) {
+             // other tags may be good search terms
+             for (var i in _entityIDs) {
+               var entity = context.hasEntity(_entityIDs[i]);

 
 

-               html = html.replace(/\*\*(.*?)\*\*/g, '<span class="instruction">$1</span>');
+               if (entity.tags[_hintKey]) {
+                 q = entity.tags[_hintKey];
+                 break;
+               }

              }
              }

+           }

 
 

-             html = html.replace(/\*(.*?)\*/g, '<em>$1</em>'); // emphasis
-
-             html = html.replace(/\{br\}/g, '<br/><br/>'); // linebreak
+           wikidata.itemsForSearchQuery(q, function (err, data) {
+             if (err) return;

 
 

-             if (options.buttonText && options.buttonCallback) {
-               html += '<div class="button-section">' + '<button href="#" class="button action">' + options.buttonText + '</button></div>';
+             for (var i in data) {
+               data[i].value = data[i].label + ' (' + data[i].id + ')';
+               data[i].title = data[i].description;

              }
 
              }
 

-             var classes = 'curtain-tooltip popover tooltip arrowed in ' + (options.tooltipClass || '');
-             tooltip.classed(classes, true).selectAll('.popover-inner').html(html);
+             if (callback) callback(data);
+           });
+         }

 
 

-             if (options.buttonText && options.buttonCallback) {
-               var button = tooltip.selectAll('.button-section .button.action');
-               button.on('click', function (d3_event) {
-                 d3_event.preventDefault();
-                 options.buttonCallback();
-               });
-             }
+         function change() {
+           var syncTags = {};
+           syncTags[field.key] = _qid;
+           dispatch.call('change', this, syncTags); // attempt asynchronous update of wikidata tag..

 
 

-             var tip = copyBox(tooltip.node().getBoundingClientRect()),
-                 w = containerNode.clientWidth,
-                 h = containerNode.clientHeight,
-                 tooltipWidth = 200,
-                 tooltipArrow = 5,
-                 side,
-                 pos; // hack: this will have bottom placement,
-             // so need to reserve extra space for the tooltip illustration.
+           var initGraph = context.graph();
+           var initEntityIDs = _entityIDs;
+           wikidata.entityByQID(_qid, function (err, entity) {
+             if (err) return; // If graph has changed, we can't apply this update.

 
 

-             if (options.tooltipClass === 'intro-mouse') {
-               tip.height += 80;
-             } // trim box dimensions to just the portion that fits in the container..
+             if (context.graph() !== initGraph) return;
+             if (!entity.sitelinks) return;
+             var langs = wikidata.languagesToQuery(); // use the label and description languages as fallbacks

 
 

+             ['labels', 'descriptions'].forEach(function (key) {
+               if (!entity[key]) return;
+               var valueLangs = Object.keys(entity[key]);
+               if (valueLangs.length === 0) return;
+               var valueLang = valueLangs[0];

 
 

-             if (tooltipBox.top + tooltipBox.height > h) {
-               tooltipBox.height -= tooltipBox.top + tooltipBox.height - h;
-             }
+               if (langs.indexOf(valueLang) === -1) {
+                 langs.push(valueLang);
+               }
+             });
+             var newWikipediaValue;

 
 

-             if (tooltipBox.left + tooltipBox.width > w) {
-               tooltipBox.width -= tooltipBox.left + tooltipBox.width - w;
-             } // determine tooltip placement..
+             if (_wikipediaKey) {
+               var foundPreferred;

 
 

+               for (var i in langs) {
+                 var lang = langs[i];
+                 var siteID = lang.replace('-', '_') + 'wiki';

 
 

-             if (tooltipBox.top + tooltipBox.height < 100) {
-               // tooltip below box..
-               side = 'bottom';
-               pos = [tooltipBox.left + tooltipBox.width / 2 - tip.width / 2, tooltipBox.top + tooltipBox.height];
-             } else if (tooltipBox.top > h - 140) {
-               // tooltip above box..
-               side = 'top';
-               pos = [tooltipBox.left + tooltipBox.width / 2 - tip.width / 2, tooltipBox.top - tip.height];
-             } else {
-               // tooltip to the side of the tooltipBox..
-               var tipY = tooltipBox.top + tooltipBox.height / 2 - tip.height / 2;
+                 if (entity.sitelinks[siteID]) {
+                   foundPreferred = true;
+                   newWikipediaValue = lang + ':' + entity.sitelinks[siteID].title; // use the first match

 
 

-               if (_mainLocalizer.textDirection() === 'rtl') {
-                 if (tooltipBox.left - tooltipWidth - tooltipArrow < 70) {
-                   side = 'right';
-                   pos = [tooltipBox.left + tooltipBox.width + tooltipArrow, tipY];
-                 } else {
-                   side = 'left';
-                   pos = [tooltipBox.left - tooltipWidth - tooltipArrow, tipY];
+                   break;

                  }
                  }

-               } else {
-                 if (tooltipBox.left + tooltipBox.width + tooltipArrow + tooltipWidth > w - 70) {
-                   side = 'left';
-                   pos = [tooltipBox.left - tooltipWidth - tooltipArrow, tipY];
+               }
+
+               if (!foundPreferred) {
+                 // No wikipedia sites available in the user's language or the fallback languages,
+                 // default to any wikipedia sitelink
+                 var wikiSiteKeys = Object.keys(entity.sitelinks).filter(function (site) {
+                   return site.endsWith('wiki');
+                 });
+
+                 if (wikiSiteKeys.length === 0) {
+                   // if no wikipedia pages are linked to this wikidata entity, delete that tag
+                   newWikipediaValue = null;

                  } else {
                  } else {

-                   side = 'right';
-                   pos = [tooltipBox.left + tooltipBox.width + tooltipArrow, tipY];
+                   var wikiLang = wikiSiteKeys[0].slice(0, -4).replace('_', '-');
+                   var wikiTitle = entity.sitelinks[wikiSiteKeys[0]].title;
+                   newWikipediaValue = wikiLang + ':' + wikiTitle;

                  }
                }
              }
 
                  }
                }
              }
 

-             if (options.duration !== 0 || !tooltip.classed(side)) {
-               tooltip.call(uiToggle(true));
+             if (newWikipediaValue) {
+               newWikipediaValue = context.cleanTagValue(newWikipediaValue);

              }
 
              }
 

-             tooltip.style('top', pos[1] + 'px').style('left', pos[0] + 'px').attr('class', classes + ' ' + side); // shift popover-inner if it is very close to the top or bottom edge
-             // (doesn't affect the placement of the popover-arrow)
-
-             var shiftY = 0;
+             if (typeof newWikipediaValue === 'undefined') return;
+             var actions = initEntityIDs.map(function (entityID) {
+               var entity = context.hasEntity(entityID);
+               if (!entity) return null;
+               var currTags = Object.assign({}, entity.tags); // shallow copy

 
 

-             if (side === 'left' || side === 'right') {
-               if (pos[1] < 60) {
-                 shiftY = 60 - pos[1];
-               } else if (pos[1] + tip.height > h - 100) {
-                 shiftY = h - pos[1] - tip.height - 100;
+               if (newWikipediaValue === null) {
+                 if (!currTags[_wikipediaKey]) return null;
+                 delete currTags[_wikipediaKey];
+               } else {
+                 currTags[_wikipediaKey] = newWikipediaValue;

                }
                }

-             }

 
 

-             tooltip.selectAll('.popover-inner').style('top', shiftY + 'px');
-           } else {
-             tooltip.classed('in', false).call(uiToggle(false));
-           }
+               return actionChangeTags(entityID, currTags);
+             }).filter(Boolean);
+             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change

 
 

-           curtain.cut(box, options.duration);
-           return tooltip;
-         };
+             context.overwrite(function actionUpdateWikipediaTags(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             }, context.history().undoAnnotation()); // do not dispatch.call('change') here, because entity_editor
+             // changeTags() is not intended to be called asynchronously
+           });
+         }

 
 

-         curtain.cut = function (datum, duration) {
-           darkness.datum(datum).interrupt();
-           var selection;
+         function setLabelForEntity() {
+           var label = '';

 
 

-           if (duration === 0) {
-             selection = darkness;
-           } else {
-             selection = darkness.transition().duration(duration || 600).ease(linear$1);
+           if (_wikidataEntity) {
+             label = entityPropertyForDisplay(_wikidataEntity, 'labels');
+
+             if (label.length === 0) {
+               label = _wikidataEntity.id.toString();
+             }

            }
 
            }
 

-           selection.attr('d', function (d) {
-             var containerWidth = containerNode.clientWidth;
-             var containerHeight = containerNode.clientHeight;
-             var string = 'M 0,0 L 0,' + containerHeight + ' L ' + containerWidth + ',' + containerHeight + 'L' + containerWidth + ',0 Z';
-             if (!d) return string;
-             return string + 'M' + d.left + ',' + d.top + 'L' + d.left + ',' + (d.top + d.height) + 'L' + (d.left + d.width) + ',' + (d.top + d.height) + 'L' + (d.left + d.width) + ',' + d.top + 'Z';
-           });
-         };
+           utilGetSetValue(_searchInput, label);
+         }

 
 

-         curtain.remove = function () {
-           surface.remove();
-           tooltip.remove();
-           select(window).on('resize.curtain', null);
-         }; // ClientRects are immutable, so copy them to an object,
-         // in case we need to trim the height/width.
+         wiki.tags = function (tags) {
+           var isMixed = Array.isArray(tags[field.key]);

 
 

+           _searchInput.attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : '').classed('mixed', isMixed);

 
 

-         function copyBox(src) {
-           return {
-             top: src.top,
-             right: src.right,
-             bottom: src.bottom,
-             left: src.left,
-             width: src.width,
-             height: src.height
-           };
-         }
+           _qid = typeof tags[field.key] === 'string' && tags[field.key] || '';

 
 

-         return curtain;
-       }
+           if (!/^Q[0-9]*$/.test(_qid)) {
+             // not a proper QID
+             unrecognized();
+             return;
+           } // QID value in correct format

 
 

-       function uiIntroWelcome(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var chapter = {
-           title: 'intro.welcome.title'
-         };

 
 

-         function welcome() {
-           context.map().centerZoom([-85.63591, 41.94285], 19);
-           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.welcome'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: practice
-           });
-         }
+           _wikiURL = 'https://wikidata.org/wiki/' + _qid;
+           wikidata.entityByQID(_qid, function (err, entity) {
+             if (err) {
+               unrecognized();
+               return;
+             }

 
 

-         function practice() {
-           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.practice'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: words
-           });
-         }
+             _wikidataEntity = entity;
+             setLabelForEntity();
+             var description = entityPropertyForDisplay(entity, 'descriptions');

 
 

-         function words() {
-           reveal('.intro-nav-wrap .chapter-welcome', helpHtml('intro.welcome.words'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: chapters
-           });
-         }
+             _selection.select('button.wiki-link').classed('disabled', false);

 
 

-         function chapters() {
-           dispatch$1.call('done');
-           reveal('.intro-nav-wrap .chapter-navigation', helpHtml('intro.welcome.chapters', {
-             next: _t('intro.navigation.title')
-           }));
-         }
+             _selection.select('.preset-wikidata-description').style('display', function () {
+               return description.length > 0 ? 'flex' : 'none';
+             }).select('input').attr('value', description);

 
 

-         chapter.enter = function () {
-           welcome();
+             _selection.select('.preset-wikidata-identifier').style('display', function () {
+               return entity.id ? 'flex' : 'none';
+             }).select('input').attr('value', entity.id);
+           }); // not a proper QID
+
+           function unrecognized() {
+             _wikidataEntity = null;
+             setLabelForEntity();
+
+             _selection.select('.preset-wikidata-description').style('display', 'none');
+
+             _selection.select('.preset-wikidata-identifier').style('display', 'none');
+
+             _selection.select('button.wiki-link').classed('disabled', true);
+
+             if (_qid && _qid !== '') {
+               _wikiURL = 'https://wikidata.org/wiki/Special:Search?search=' + _qid;
+             } else {
+               _wikiURL = '';
+             }
+           }

          };
 
          };
 

-         chapter.exit = function () {
-           context.container().select('.curtain-tooltip.intro-mouse').selectAll('.counter').remove();
+         function entityPropertyForDisplay(wikidataEntity, propKey) {
+           if (!wikidataEntity[propKey]) return '';
+           var propObj = wikidataEntity[propKey];
+           var langKeys = Object.keys(propObj);
+           if (langKeys.length === 0) return ''; // sorted by priority, since we want to show the user's language first if possible
+
+           var langs = wikidata.languagesToQuery();
+
+           for (var i in langs) {
+             var lang = langs[i];
+             var valueObj = propObj[lang];
+             if (valueObj && valueObj.value && valueObj.value.length > 0) return valueObj.value;
+           } // default to any available value
+
+
+           return propObj[langKeys[0]].value;
+         }
+
+         wiki.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return wiki;

          };
 
          };
 

-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
+         wiki.focus = function () {
+           _searchInput.node().focus();

          };
 
          };
 

-         return utilRebind(chapter, dispatch$1, 'on');
+         return utilRebind(wiki, dispatch, 'on');

        }
 
        }
 

-       function uiIntroNavigation(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var timeouts = [];
-         var hallId = 'n2061';
-         var townHall = [-85.63591, 41.94285];
-         var springStreetId = 'w397';
-         var springStreetEndId = 'n1834';
-         var springStreet = [-85.63582, 41.94255];
-         var onewayField = _mainPresetIndex.field('oneway');
-         var maxspeedField = _mainPresetIndex.field('maxspeed');
-         var chapter = {
-           title: 'intro.navigation.title'
-         };
+       function uiFieldWikipedia(field, context) {
+         var _arguments = arguments;
+         var dispatch = dispatch$8('change');
+         var wikipedia = services.wikipedia;
+         var wikidata = services.wikidata;

 
 

-         function timeout(f, t) {
-           timeouts.push(window.setTimeout(f, t));
-         }
+         var _langInput = select(null);

 
 

-         function eventCancel(d3_event) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-         }
+         var _titleInput = select(null);

 
 

-         function isTownHallSelected() {
-           var ids = context.selectedIDs();
-           return ids.length === 1 && ids[0] === hallId;
-         }
+         var _wikiURL = '';

 
 

-         function dragMap() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           var msec = transitionTime(townHall, context.map().center());
+         var _entityIDs;

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+         var _tags;

 
 

-           context.map().centerZoomEase(townHall, 19, msec);
-           timeout(function () {
-             var centerStart = context.map().center();
-             var textId = context.lastPointerType() === 'mouse' ? 'drag' : 'drag_touch';
-             var dragString = helpHtml('intro.navigation.map_info') + '{br}' + helpHtml('intro.navigation.' + textId);
-             reveal('.surface', dragString);
-             context.map().on('drawn.intro', function () {
-               reveal('.surface', dragString, {
-                 duration: 0
-               });
-             });
-             context.map().on('move.intro', function () {
-               var centerNow = context.map().center();
+         var _dataWikipedia = [];
+         _mainFileFetcher.get('wmf_sitematrix').then(function (d) {
+           _dataWikipedia = d;
+           if (_tags) updateForTags(_tags);
+         })["catch"](function () {
+           /* ignore */
+         });
+         var langCombo = uiCombobox(context, 'wikipedia-lang').fetcher(function (value, callback) {
+           var v = value.toLowerCase();
+           callback(_dataWikipedia.filter(function (d) {
+             return d[0].toLowerCase().indexOf(v) >= 0 || d[1].toLowerCase().indexOf(v) >= 0 || d[2].toLowerCase().indexOf(v) >= 0;
+           }).map(function (d) {
+             return {
+               value: d[1]
+             };
+           }));
+         });
+         var titleCombo = uiCombobox(context, 'wikipedia-title').fetcher(function (value, callback) {
+           if (!value) {
+             value = '';

 
 

-               if (centerStart[0] !== centerNow[0] || centerStart[1] !== centerNow[1]) {
-                 context.map().on('move.intro', null);
-                 timeout(function () {
-                   continueTo(zoomMap);
-                 }, 3000);
-               }
-             });
-           }, msec + 100);
+             for (var i in _entityIDs) {
+               var entity = context.hasEntity(_entityIDs[i]);

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
+               if (entity.tags.name) {
+                 value = entity.tags.name;
+                 break;
+               }
+             }

            }
            }

-         }

 
 

-         function zoomMap() {
-           var zoomStart = context.map().zoom();
-           var textId = context.lastPointerType() === 'mouse' ? 'zoom' : 'zoom_touch';
-           var zoomString = helpHtml('intro.navigation.' + textId);
-           reveal('.surface', zoomString);
-           context.map().on('drawn.intro', function () {
-             reveal('.surface', zoomString, {
-               duration: 0
-             });
-           });
-           context.map().on('move.intro', function () {
-             if (context.map().zoom() !== zoomStart) {
-               context.map().on('move.intro', null);
-               timeout(function () {
-                 continueTo(features);
-               }, 3000);
-             }
+           var searchfn = value.length > 7 ? wikipedia.search : wikipedia.suggestions;
+           searchfn(language()[2], value, function (query, data) {
+             callback(data.map(function (d) {
+               return {
+                 value: d
+               };
+             }));

            });
            });

+         });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
-           }
-         }
+         function wiki(selection) {
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+           wrap = wrap.enter().append('div').attr('class', "form-field-input-wrap form-field-input-".concat(field.type)).merge(wrap);
+           var langContainer = wrap.selectAll('.wiki-lang-container').data([0]);
+           langContainer = langContainer.enter().append('div').attr('class', 'wiki-lang-container').merge(langContainer);
+           _langInput = langContainer.selectAll('input.wiki-lang').data([0]);
+           _langInput = _langInput.enter().append('input').attr('type', 'text').attr('class', 'wiki-lang').attr('placeholder', _t('translate.localized_translation_language')).call(utilNoAuto).call(langCombo).merge(_langInput);

 
 

-         function features() {
-           var onClick = function onClick() {
-             continueTo(pointsLinesAreas);
-           };
+           _langInput.on('blur', changeLang).on('change', changeLang);

 
 

-           reveal('.surface', helpHtml('intro.navigation.features'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.map().on('drawn.intro', function () {
-             reveal('.surface', helpHtml('intro.navigation.features'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: onClick
-             });
+           var titleContainer = wrap.selectAll('.wiki-title-container').data([0]);
+           titleContainer = titleContainer.enter().append('div').attr('class', 'wiki-title-container').merge(titleContainer);
+           _titleInput = titleContainer.selectAll('input.wiki-title').data([0]);
+           _titleInput = _titleInput.enter().append('input').attr('type', 'text').attr('class', 'wiki-title').attr('id', field.domId).call(utilNoAuto).call(titleCombo).merge(_titleInput);
+
+           _titleInput.on('blur', function () {
+             change(true);
+           }).on('change', function () {
+             change(false);

            });
 
            });
 

-           function continueTo(nextStep) {
-             context.map().on('drawn.intro', null);
-             nextStep();
-           }
+           var link = titleContainer.selectAll('.wiki-link').data([0]);
+           link = link.enter().append('button').attr('class', 'form-field-button wiki-link').attr('title', _t('icons.view_on', {
+             domain: 'wikipedia.org'
+           })).call(svgIcon('#iD-icon-out-link')).merge(link);
+           link.on('click', function (d3_event) {
+             d3_event.preventDefault();
+             if (_wikiURL) window.open(_wikiURL, '_blank');
+           });

          }
 
          }
 

-         function pointsLinesAreas() {
-           var onClick = function onClick() {
-             continueTo(nodesWays);
-           };
-
-           reveal('.surface', helpHtml('intro.navigation.points_lines_areas'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.map().on('drawn.intro', function () {
-             reveal('.surface', helpHtml('intro.navigation.points_lines_areas'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: onClick
-             });
-           });
+         function defaultLanguageInfo(skipEnglishFallback) {
+           var langCode = _mainLocalizer.languageCode().toLowerCase();

 
 

-           function continueTo(nextStep) {
-             context.map().on('drawn.intro', null);
-             nextStep();
-           }
-         }
+           for (var i in _dataWikipedia) {
+             var d = _dataWikipedia[i]; // default to the language of iD's current locale

 
 

-         function nodesWays() {
-           var onClick = function onClick() {
-             continueTo(clickTownHall);
-           };
+             if (d[2] === langCode) return d;
+           } // fallback to English

 
 

-           reveal('.surface', helpHtml('intro.navigation.nodes_ways'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.map().on('drawn.intro', function () {
-             reveal('.surface', helpHtml('intro.navigation.nodes_ways'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: onClick
-             });
-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('drawn.intro', null);
-             nextStep();
-           }
+           return skipEnglishFallback ? ['', '', ''] : ['English', 'English', 'en'];

          }
 
          }
 

-         function clickTownHall() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           var entity = context.hasEntity(hallId);
-           if (!entity) return;
-           reveal(null, null, {
-             duration: 0
-           });
-           context.map().centerZoomEase(entity.loc, 19, 500);
-           timeout(function () {
-             var entity = context.hasEntity(hallId);
-             if (!entity) return;
-             var box = pointBox(entity.loc, context);
-             var textId = context.lastPointerType() === 'mouse' ? 'click_townhall' : 'tap_townhall';
-             reveal(box, helpHtml('intro.navigation.' + textId));
-             context.map().on('move.intro drawn.intro', function () {
-               var entity = context.hasEntity(hallId);
-               if (!entity) return;
-               var box = pointBox(entity.loc, context);
-               reveal(box, helpHtml('intro.navigation.' + textId), {
-                 duration: 0
-               });
-             });
-             context.on('enter.intro', function () {
-               if (isTownHallSelected()) continueTo(selectedTownHall);
-             });
-           }, 550); // after centerZoomEase
+         function language(skipEnglishFallback) {
+           var value = utilGetSetValue(_langInput).toLowerCase();

 
 

-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(hallId)) {
-               continueTo(clickTownHall);
-             }
-           });
+           for (var i in _dataWikipedia) {
+             var d = _dataWikipedia[i]; // return the language already set in the UI, if supported

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
+             if (d[0].toLowerCase() === value || d[1].toLowerCase() === value || d[2] === value) return d;
+           } // fallback to English
+
+
+           return defaultLanguageInfo(skipEnglishFallback);

          }
 
          }
 

-         function selectedTownHall() {
-           if (!isTownHallSelected()) return clickTownHall();
-           var entity = context.hasEntity(hallId);
-           if (!entity) return clickTownHall();
-           var box = pointBox(entity.loc, context);
+         function changeLang() {
+           utilGetSetValue(_langInput, language()[1]);
+           change(true);
+         }

 
 

-           var onClick = function onClick() {
-             continueTo(editorTownHall);
-           };
+         function change(skipWikidata) {
+           var value = utilGetSetValue(_titleInput);
+           var m = value.match(/https?:\/\/([-a-z]+)\.wikipedia\.org\/(?:wiki|\1-[-a-z]+)\/([^#]+)(?:#(.+))?/);

 
 

-           reveal(box, helpHtml('intro.navigation.selected_townhall'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             var entity = context.hasEntity(hallId);
-             if (!entity) return;
-             var box = pointBox(entity.loc, context);
-             reveal(box, helpHtml('intro.navigation.selected_townhall'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: onClick
-             });
-           });
-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(hallId)) {
-               continueTo(clickTownHall);
-             }
+           var langInfo = m && _dataWikipedia.find(function (d) {
+             return m[1] === d[2];

            });
 
            });
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+           var syncTags = {};

 
 

-         function editorTownHall() {
-           if (!isTownHallSelected()) return clickTownHall(); // disallow scrolling
+           if (langInfo) {
+             var nativeLangName = langInfo[1]; // Normalize title http://www.mediawiki.org/wiki/API:Query#Title_normalization

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+             value = decodeURIComponent(m[2]).replace(/_/g, ' ');

 
 

-           var onClick = function onClick() {
-             continueTo(presetTownHall);
-           };
+             if (m[3]) {
+               var anchor; // try {
+               // leave this out for now - #6232
+               // Best-effort `anchordecode:` implementation
+               // anchor = decodeURIComponent(m[3].replace(/\.([0-9A-F]{2})/g, '%$1'));
+               // } catch (e) {

 
 

-           reveal('.entity-editor-pane', helpHtml('intro.navigation.editor_townhall'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.on('exit.intro', function () {
-             continueTo(clickTownHall);
-           });
-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(hallId)) {
-               continueTo(clickTownHall);
+               anchor = decodeURIComponent(m[3]); // }
+
+               value += '#' + anchor.replace(/_/g, ' ');

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             nextStep();
+             value = value.slice(0, 1).toUpperCase() + value.slice(1);
+             utilGetSetValue(_langInput, nativeLangName);
+             utilGetSetValue(_titleInput, value);

            }
            }

-         }

 
 

-         function presetTownHall() {
-           if (!isTownHallSelected()) return clickTownHall(); // reset pane, in case user happened to change it..
+           if (value) {
+             syncTags.wikipedia = context.cleanTagValue(language()[2] + ':' + value);
+           } else {
+             syncTags.wikipedia = undefined;
+           }

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // disallow scrolling
+           dispatch.call('change', this, syncTags);
+           if (skipWikidata || !value || !language()[2]) return; // attempt asynchronous update of wikidata tag..

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel); // preset match, in case the user happened to change it.
+           var initGraph = context.graph();
+           var initEntityIDs = _entityIDs;
+           wikidata.itemsByTitle(language()[2], value, function (err, data) {
+             if (err || !data || !Object.keys(data).length) return; // If graph has changed, we can't apply this update.

 
 

-           var entity = context.entity(context.selectedIDs()[0]);
-           var preset = _mainPresetIndex.match(entity, context.graph());
+             if (context.graph() !== initGraph) return;
+             var qids = Object.keys(data);
+             var value = qids && qids.find(function (id) {
+               return id.match(/^Q\d+$/);
+             });
+             var actions = initEntityIDs.map(function (entityID) {
+               var entity = context.entity(entityID).tags;
+               var currTags = Object.assign({}, entity); // shallow copy

 
 

-           var onClick = function onClick() {
-             continueTo(fieldsTownHall);
-           };
+               if (currTags.wikidata !== value) {
+                 currTags.wikidata = value;
+                 return actionChangeTags(entityID, currTags);
+               }

 
 

-           reveal('.entity-editor-pane .section-feature-type', helpHtml('intro.navigation.preset_townhall', {
-             preset: preset.name()
-           }), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.on('exit.intro', function () {
-             continueTo(clickTownHall);
-           });
-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(hallId)) {
-               continueTo(clickTownHall);
-             }
-           });
+               return null;
+             }).filter(Boolean);
+             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             nextStep();
-           }
+             context.overwrite(function actionUpdateWikidataTags(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             }, context.history().undoAnnotation()); // do not dispatch.call('change') here, because entity_editor
+             // changeTags() is not intended to be called asynchronously
+           });

          }
 
          }
 

-         function fieldsTownHall() {
-           if (!isTownHallSelected()) return clickTownHall(); // reset pane, in case user happened to change it..
+         wiki.tags = function (tags) {
+           _tags = tags;
+           updateForTags(tags);
+         };

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // disallow scrolling
+         function updateForTags(tags) {
+           var value = typeof tags[field.key] === 'string' ? tags[field.key] : ''; // Expect tag format of `tagLang:tagArticleTitle`, e.g. `fr:Paris`, with
+           // optional suffix of `#anchor`

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
+           var m = value.match(/([^:]+):([^#]+)(?:#(.+))?/);
+           var tagLang = m && m[1];
+           var tagArticleTitle = m && m[2];
+           var anchor = m && m[3];

 
 

-           var onClick = function onClick() {
-             continueTo(closeTownHall);
-           };
+           var tagLangInfo = tagLang && _dataWikipedia.find(function (d) {
+             return tagLang === d[2];
+           }); // value in correct format

 
 

-           reveal('.entity-editor-pane .section-preset-fields', helpHtml('intro.navigation.fields_townhall'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.on('exit.intro', function () {
-             continueTo(clickTownHall);
-           });
-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(hallId)) {
-               continueTo(clickTownHall);
+
+           if (tagLangInfo) {
+             var nativeLangName = tagLangInfo[1];
+             utilGetSetValue(_langInput, nativeLangName);
+             utilGetSetValue(_titleInput, tagArticleTitle + (anchor ? '#' + anchor : ''));
+
+             if (anchor) {
+               try {
+                 // Best-effort `anchorencode:` implementation
+                 anchor = encodeURIComponent(anchor.replace(/ /g, '_')).replace(/%/g, '.');
+               } catch (e) {
+                 anchor = anchor.replace(/ /g, '_');
+               }

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             nextStep();
+             _wikiURL = 'https://' + tagLang + '.wikipedia.org/wiki/' + tagArticleTitle.replace(/ /g, '_') + (anchor ? '#' + anchor : ''); // unrecognized value format
+           } else {
+             utilGetSetValue(_titleInput, value);
+
+             if (value && value !== '') {
+               utilGetSetValue(_langInput, '');
+               var defaultLangInfo = defaultLanguageInfo();
+               _wikiURL = "https://".concat(defaultLangInfo[2], ".wikipedia.org/w/index.php?fulltext=1&search=").concat(value);
+             } else {
+               var shownOrDefaultLangInfo = language(true
+               /* skipEnglishFallback */
+               );
+               utilGetSetValue(_langInput, shownOrDefaultLangInfo[1]);
+               _wikiURL = '';
+             }

            }
          }
 
            }
          }
 

-         function closeTownHall() {
-           if (!isTownHallSelected()) return clickTownHall();
-           var selector = '.entity-editor-pane button.close svg use';
-           var href = select(selector).attr('href') || '#iD-icon-close';
-           reveal('.entity-editor-pane', helpHtml('intro.navigation.close_townhall', {
-             button: icon(href, 'inline')
-           }));
-           context.on('exit.intro', function () {
-             continueTo(searchStreet);
-           });
-           context.history().on('change.intro', function () {
-             // update the close icon in the tooltip if the user edits something.
-             var selector = '.entity-editor-pane button.close svg use';
-             var href = select(selector).attr('href') || '#iD-icon-close';
-             reveal('.entity-editor-pane', helpHtml('intro.navigation.close_townhall', {
-               button: icon(href, 'inline')
-             }), {
-               duration: 0
-             });
-           });
+         wiki.entityIDs = function (val) {
+           if (!_arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return wiki;
+         };

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+         wiki.focus = function () {
+           _titleInput.node().focus();
+         };

 
 

-         function searchStreet() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial'); // ensure spring street exists
+         return utilRebind(wiki, dispatch, 'on');
+       }
+       uiFieldWikipedia.supportsMultiselection = false;

 
 

-           var msec = transitionTime(springStreet, context.map().center());
+       var uiFields = {
+         access: uiFieldAccess,
+         address: uiFieldAddress,
+         check: uiFieldCheck,
+         combo: uiFieldCombo,
+         cycleway: uiFieldCycleway,
+         defaultCheck: uiFieldCheck,
+         email: uiFieldText,
+         identifier: uiFieldText,
+         lanes: uiFieldLanes,
+         localized: uiFieldLocalized,
+         roadheight: uiFieldRoadheight,
+         roadspeed: uiFieldRoadspeed,
+         manyCombo: uiFieldCombo,
+         multiCombo: uiFieldCombo,
+         networkCombo: uiFieldCombo,
+         number: uiFieldText,
+         onewayCheck: uiFieldCheck,
+         radio: uiFieldRadio,
+         restrictions: uiFieldRestrictions,
+         semiCombo: uiFieldCombo,
+         structureRadio: uiFieldRadio,
+         tel: uiFieldText,
+         text: uiFieldText,
+         textarea: uiFieldTextarea,
+         typeCombo: uiFieldCombo,
+         url: uiFieldText,
+         wikidata: uiFieldWikidata,
+         wikipedia: uiFieldWikipedia
+       };
+
+       function uiField(context, presetField, entityIDs, options) {
+         options = Object.assign({
+           show: true,
+           wrap: true,
+           remove: true,
+           revert: true,
+           info: true
+         }, options);
+         var dispatch = dispatch$8('change', 'revert');
+         var field = Object.assign({}, presetField); // shallow copy

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+         field.domId = utilUniqueDomId('form-field-' + field.safeid);
+         var _show = options.show;
+         var _state = '';
+         var _tags = {};

 
 

-           context.map().centerZoomEase(springStreet, 19, msec); // ..and user can see it
+         var _entityExtent;

 
 

-           timeout(function () {
-             reveal('.search-header input', helpHtml('intro.navigation.search_street', {
-               name: _t('intro.graph.name.spring-street')
-             }));
-             context.container().select('.search-header input').on('keyup.intro', checkSearchResult);
-           }, msec + 100);
+         if (entityIDs && entityIDs.length) {
+           _entityExtent = entityIDs.reduce(function (extent, entityID) {
+             var entity = context.graph().entity(entityID);
+             return extent.extend(entity.extent(context.graph()));
+           }, geoExtent());

          }
 
          }
 

-         function checkSearchResult() {
-           var first = context.container().select('.feature-list-item:nth-child(0n+2)'); // skip "No Results" item
-
-           var firstName = first.select('.entity-name');
-           var name = _t('intro.graph.name.spring-street');
+         var _locked = false;

 
 

-           if (!firstName.empty() && firstName.html() === name) {
-             reveal(first.node(), helpHtml('intro.navigation.choose_street', {
-               name: name
-             }), {
-               duration: 300
-             });
-             context.on('exit.intro', function () {
-               continueTo(selectedStreet);
-             });
-             context.container().select('.search-header input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
-           }
+         var _lockedTip = uiTooltip().title(_t.html('inspector.lock.suggestion', {
+           label: field.label
+         })).placement('bottom');

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.container().select('.search-header input').on('keydown.intro', null).on('keyup.intro', null);
-             nextStep();
-           }
-         }
+         field.keys = field.keys || [field.key]; // only create the fields that are actually being shown

 
 

-         function selectedStreet() {
-           if (!context.hasEntity(springStreetEndId) || !context.hasEntity(springStreetId)) {
-             return searchStreet();
-           }
+         if (_show && !field.impl) {
+           createField();
+         } // Creates the field.. This is done lazily,
+         // once we know that the field will be shown.

 
 

-           var onClick = function onClick() {
-             continueTo(editorStreet);
-           };

 
 

-           var entity = context.entity(springStreetEndId);
-           var box = pointBox(entity.loc, context);
-           box.height = 500;
-           reveal(box, helpHtml('intro.navigation.selected_street', {
-             name: _t('intro.graph.name.spring-street')
-           }), {
-             duration: 600,
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
+         function createField() {
+           field.impl = uiFields[field.type](field, context).on('change', function (t, onInput) {
+             dispatch.call('change', field, t, onInput);

            });
            });

-           timeout(function () {
-             context.map().on('move.intro drawn.intro', function () {
-               var entity = context.hasEntity(springStreetEndId);
-               if (!entity) return;
-               var box = pointBox(entity.loc, context);
-               box.height = 500;
-               reveal(box, helpHtml('intro.navigation.selected_street', {
-                 name: _t('intro.graph.name.spring-street')
-               }), {
-                 duration: 0,
-                 buttonText: _t.html('intro.ok'),
-                 buttonCallback: onClick
-               });
-             });
-           }, 600); // after reveal.

 
 

-           context.on('enter.intro', function (mode) {
-             if (!context.hasEntity(springStreetId)) {
-               return continueTo(searchStreet);
-             }
-
-             var ids = context.selectedIDs();
+           if (entityIDs) {
+             field.entityIDs = entityIDs; // if this field cares about the entities, pass them along

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== springStreetId) {
-               // keep Spring Street selected..
-               context.enter(modeSelect(context, [springStreetId]));
-             }
-           });
-           context.history().on('change.intro', function () {
-             if (!context.hasEntity(springStreetEndId) || !context.hasEntity(springStreetId)) {
-               timeout(function () {
-                 continueTo(searchStreet);
-               }, 300); // after any transition (e.g. if user deleted intersection)
+             if (field.impl.entityIDs) {
+               field.impl.entityIDs(entityIDs);

              }
              }

-           });
-
-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();

            }
          }
 
            }
          }
 

-         function editorStreet() {
-           var selector = '.entity-editor-pane button.close svg use';
-           var href = select(selector).attr('href') || '#iD-icon-close';
-           reveal('.entity-editor-pane', helpHtml('intro.navigation.street_different_fields') + '{br}' + helpHtml('intro.navigation.editor_street', {
-             button: icon(href, 'inline'),
-             field1: onewayField.label(),
-             field2: maxspeedField.label()
-           }));
-           context.on('exit.intro', function () {
-             continueTo(play);
-           });
-           context.history().on('change.intro', function () {
-             // update the close icon in the tooltip if the user edits something.
-             var selector = '.entity-editor-pane button.close svg use';
-             var href = select(selector).attr('href') || '#iD-icon-close';
-             reveal('.entity-editor-pane', helpHtml('intro.navigation.street_different_fields') + '{br}' + helpHtml('intro.navigation.editor_street', {
-               button: icon(href, 'inline'),
-               field1: onewayField.label(),
-               field2: maxspeedField.label()
-             }), {
-               duration: 0
+         function isModified() {
+           if (!entityIDs || !entityIDs.length) return false;
+           return entityIDs.some(function (entityID) {
+             var original = context.graph().base().entities[entityID];
+             var latest = context.graph().entity(entityID);
+             return field.keys.some(function (key) {
+               return original ? latest.tags[key] !== original.tags[key] : latest.tags[key];

              });
            });
              });
            });

-
-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }

          }
 
          }
 

-         function play() {
-           dispatch$1.call('done');
-           reveal('.ideditor', helpHtml('intro.navigation.play', {
-             next: _t('intro.points.title')
-           }), {
-             tooltipBox: '.intro-nav-wrap .chapter-point',
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               reveal('.ideditor');
+         function tagsContainFieldKey() {
+           return field.keys.some(function (key) {
+             if (field.type === 'multiCombo') {
+               for (var tagKey in _tags) {
+                 if (tagKey.indexOf(key) === 0) {
+                   return true;
+                 }
+               }
+
+               return false;

              }
              }

+
+             return _tags[key] !== undefined;

            });
          }
 
            });
          }
 

-         chapter.enter = function () {
-           dragMap();
-         };
-
-         chapter.exit = function () {
-           timeouts.forEach(window.clearTimeout);
-           context.on('enter.intro exit.intro', null);
-           context.map().on('move.intro drawn.intro', null);
-           context.history().on('change.intro', null);
-           context.container().select('.inspector-wrap').on('wheel.intro', null);
-           context.container().select('.search-header input').on('keydown.intro keyup.intro', null);
-         };
-
-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
-         };
-
-         return utilRebind(chapter, dispatch$1, 'on');
-       }
-
-       function uiIntroPoint(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var timeouts = [];
-         var intersection = [-85.63279, 41.94394];
-         var building = [-85.632422, 41.944045];
-         var cafePreset = _mainPresetIndex.item('amenity/cafe');
-         var _pointID = null;
-         var chapter = {
-           title: 'intro.points.title'
-         };
-
-         function timeout(f, t) {
-           timeouts.push(window.setTimeout(f, t));
+         function revert(d3_event, d) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+           if (!entityIDs || _locked) return;
+           dispatch.call('revert', d, d.keys);

          }
 
          }
 

-         function eventCancel(d3_event) {
+         function remove(d3_event, d) {

            d3_event.stopPropagation();
            d3_event.preventDefault();
            d3_event.stopPropagation();
            d3_event.preventDefault();

+           if (_locked) return;
+           var t = {};
+           d.keys.forEach(function (key) {
+             t[key] = undefined;
+           });
+           dispatch.call('change', d, t);

          }
 
          }
 

-         function addPoint() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           var msec = transitionTime(intersection, context.map().center());
+         field.render = function (selection) {
+           var container = selection.selectAll('.form-field').data([field]); // Enter

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+           var enter = container.enter().append('div').attr('class', function (d) {
+             return 'form-field form-field-' + d.safeid;
+           }).classed('nowrap', !options.wrap);

 
 

-           context.map().centerZoomEase(intersection, 19, msec);
-           timeout(function () {
-             var tooltip = reveal('button.add-point', helpHtml('intro.points.points_info') + '{br}' + helpHtml('intro.points.add_point'));
-             _pointID = null;
-             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-points');
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'add-point') return;
-               continueTo(placePoint);
+           if (options.wrap) {
+             var labelEnter = enter.append('label').attr('class', 'field-label').attr('for', function (d) {
+               return d.domId;

              });
              });

-           }, msec + 100);
-
-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
-
-         function placePoint() {
-           if (context.mode().id !== 'add-point') {
-             return chapter.restart();
-           }
-
-           var pointBox = pad(building, 150, context);
-           var textId = context.lastPointerType() === 'mouse' ? 'place_point' : 'place_point_touch';
-           reveal(pointBox, helpHtml('intro.points.' + textId));
-           context.map().on('move.intro drawn.intro', function () {
-             pointBox = pad(building, 150, context);
-             reveal(pointBox, helpHtml('intro.points.' + textId), {
-               duration: 0
+             var textEnter = labelEnter.append('span').attr('class', 'label-text');
+             textEnter.append('span').attr('class', 'label-textvalue').html(function (d) {
+               return d.label();

              });
              });

-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'select') return chapter.restart();
-             _pointID = context.mode().selectedIDs()[0];
-             continueTo(searchPreset);
-           });
-
-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
-
-         function searchPreset() {
-           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
-             return addPoint();
-           } // disallow scrolling
+             textEnter.append('span').attr('class', 'label-textannotation');

 
 

+             if (options.remove) {
+               labelEnter.append('button').attr('class', 'remove-icon').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete'));
+             }

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-           reveal('.preset-search-input', helpHtml('intro.points.search_cafe', {
-             preset: cafePreset.name()
-           }));
-           context.on('enter.intro', function (mode) {
-             if (!_pointID || !context.hasEntity(_pointID)) {
-               return continueTo(addPoint);
+             if (options.revert) {
+               labelEnter.append('button').attr('class', 'modified-icon').attr('title', _t('icons.undo')).call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-redo' : '#iD-icon-undo'));

              }
              }

+           } // Update

 
 

-             var ids = context.selectedIDs();

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== _pointID) {
-               // keep the user's point selected..
-               context.enter(modeSelect(context, [_pointID])); // disallow scrolling
+           container = container.merge(enter);
+           container.select('.field-label > .remove-icon') // propagate bound data
+           .on('click', remove);
+           container.select('.field-label > .modified-icon') // propagate bound data
+           .on('click', revert);
+           container.each(function (d) {
+             var selection = select(this);

 
 

-               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-               reveal('.preset-search-input', helpHtml('intro.points.search_cafe', {
-                 preset: cafePreset.name()
-               }));
-               context.history().on('change.intro', null);
+             if (!d.impl) {
+               createField();

              }
              }

-           });

 
 

-           function checkPresetSearch() {
-             var first = context.container().select('.preset-list-item:first-child');
+             var reference, help; // instantiate field help

 
 

-             if (first.classed('preset-amenity-cafe')) {
-               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
-               reveal(first.select('.preset-list-button').node(), helpHtml('intro.points.choose_cafe', {
-                 preset: cafePreset.name()
-               }), {
-                 duration: 300
-               });
-               context.history().on('change.intro', function () {
-                 continueTo(aboutFeatureEditor);
-               });
-             }
-           }
+             if (options.wrap && field.type === 'restrictions') {
+               help = uiFieldHelp(context, 'restrictions');
+             } // instantiate tag reference

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
-             nextStep();
-           }
-         }

 
 

-         function aboutFeatureEditor() {
-           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
-             return addPoint();
-           }
+             if (options.wrap && options.info) {
+               var referenceKey = d.key || '';

 
 

-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.points.feature_editor'), {
-               tooltipClass: 'intro-points-describe',
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: function buttonCallback() {
-                 continueTo(addName);
+               if (d.type === 'multiCombo') {
+                 // lookup key without the trailing ':'
+                 referenceKey = referenceKey.replace(/:$/, '');

                }
                }

-             });
-           }, 400);
-           context.on('exit.intro', function () {
-             // if user leaves select mode here, just continue with the tutorial.
-             continueTo(reselectPoint);
-           });

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
-           }
-         }
+               reference = uiTagReference(d.reference || {
+                 key: referenceKey
+               });

 
 

-         function addName() {
-           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
-             return addPoint();
-           } // reset pane, in case user happened to change it..
+               if (_state === 'hover') {
+                 reference.showing(false);
+               }
+             }

 
 

+             selection.call(d.impl); // add field help components

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
-           var addNameString = helpHtml('intro.points.fields_info') + '{br}' + helpHtml('intro.points.add_name');
-           timeout(function () {
-             // It's possible for the user to add a name in a previous step..
-             // If so, don't tell them to add the name in this step.
-             // Give them an OK button instead.
-             var entity = context.entity(_pointID);
+             if (help) {
+               selection.call(help.body).select('.field-label').call(help.button);
+             } // add tag reference components

 
 

-             if (entity.tags.name) {
-               var tooltip = reveal('.entity-editor-pane', addNameString, {
-                 tooltipClass: 'intro-points-describe',
-                 buttonText: _t.html('intro.ok'),
-                 buttonCallback: function buttonCallback() {
-                   continueTo(addCloseEditor);
-                 }
-               });
-               tooltip.select('.instruction').style('display', 'none');
-             } else {
-               reveal('.entity-editor-pane', addNameString, {
-                 tooltipClass: 'intro-points-describe'
-               });
-             }
-           }, 400);
-           context.history().on('change.intro', function () {
-             continueTo(addCloseEditor);
-           });
-           context.on('exit.intro', function () {
-             // if user leaves select mode here, just continue with the tutorial.
-             continueTo(reselectPoint);
-           });

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+             if (reference) {
+               selection.call(reference.body).select('.field-label').call(reference.button);
+             }

 
 

-         function addCloseEditor() {
-           // reset pane, in case user happened to change it..
-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
-           var selector = '.entity-editor-pane button.close svg use';
-           var href = select(selector).attr('href') || '#iD-icon-close';
-           context.on('exit.intro', function () {
-             continueTo(reselectPoint);
+             d.impl.tags(_tags);

            });
            });

-           reveal('.entity-editor-pane', helpHtml('intro.points.add_close', {
-             button: icon(href, 'inline')
-           }));
+           container.classed('locked', _locked).classed('modified', isModified()).classed('present', tagsContainFieldKey()); // show a tip and lock icon if the field is locked

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
-           }
-         }
+           var annotation = container.selectAll('.field-label .label-textannotation');
+           var icon = annotation.selectAll('.icon').data(_locked ? [0] : []);
+           icon.exit().remove();
+           icon.enter().append('svg').attr('class', 'icon').append('use').attr('xlink:href', '#fas-lock');
+           container.call(_locked ? _lockedTip : _lockedTip.destroy);
+         };

 
 

-         function reselectPoint() {
-           if (!_pointID) return chapter.restart();
-           var entity = context.hasEntity(_pointID);
-           if (!entity) return chapter.restart(); // make sure it's still a cafe, in case user somehow changed it..
+         field.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return field;
+         };

 
 

-           var oldPreset = _mainPresetIndex.match(entity, context.graph());
-           context.replace(actionChangePreset(_pointID, oldPreset, cafePreset));
-           context.enter(modeBrowse(context));
-           var msec = transitionTime(entity.loc, context.map().center());
+         field.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val;

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
+           if (tagsContainFieldKey() && !_show) {
+             // always show a field if it has a value to display
+             _show = true;
+
+             if (!field.impl) {
+               createField();
+             }

            }
 
            }
 

-           context.map().centerEase(entity.loc, msec);
-           timeout(function () {
-             var box = pointBox(entity.loc, context);
-             reveal(box, helpHtml('intro.points.reselect'), {
-               duration: 600
-             });
-             timeout(function () {
-               context.map().on('move.intro drawn.intro', function () {
-                 var entity = context.hasEntity(_pointID);
-                 if (!entity) return chapter.restart();
-                 var box = pointBox(entity.loc, context);
-                 reveal(box, helpHtml('intro.points.reselect'), {
-                   duration: 0
-                 });
-               });
-             }, 600); // after reveal..
+           return field;
+         };

 
 

-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'select') return;
-               continueTo(updatePoint);
-             });
-           }, msec + 100);
+         field.locked = function (val) {
+           if (!arguments.length) return _locked;
+           _locked = val;
+           return field;
+         };

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+         field.show = function () {
+           _show = true;
+
+           if (!field.impl) {
+             createField();

            }
            }

-         }

 
 

-         function updatePoint() {
-           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
-             return continueTo(reselectPoint);
-           } // reset pane, in case user happened to untag the point..
+           if (field["default"] && field.key && _tags[field.key] !== field["default"]) {
+             var t = {};
+             t[field.key] = field["default"];
+             dispatch.call('change', this, t);
+           }
+         }; // A shown field has a visible UI, a non-shown field is in the 'Add field' dropdown
+

 
 

+         field.isShown = function () {
+           return _show;
+         }; // An allowed field can appear in the UI or in the 'Add field' dropdown.
+         // A non-allowed field is hidden from the user altogether

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
-           context.on('exit.intro', function () {
-             continueTo(reselectPoint);
-           });
-           context.history().on('change.intro', function () {
-             continueTo(updateCloseEditor);
-           });
-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.points.update'), {
-               tooltipClass: 'intro-points-describe'
-             });
-           }, 400);

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+         field.isAllowed = function () {
+           if (entityIDs && entityIDs.length > 1 && uiFields[field.type].supportsMultiselection === false) return false;
+           if (field.geometry && !entityIDs.every(function (entityID) {
+             return field.matchGeometry(context.graph().geometry(entityID));
+           })) return false;

 
 

-         function updateCloseEditor() {
-           if (context.mode().id !== 'select' || !_pointID || !context.hasEntity(_pointID)) {
-             return continueTo(reselectPoint);
-           } // reset pane, in case user happened to change it..
+           if (entityIDs && _entityExtent && field.locationSetID) {
+             // is field allowed in this location?
+             var validLocations = _mainLocations.locationsAt(_entityExtent.center());
+             if (!validLocations[field.locationSetID]) return false;
+           }

 
 

+           var prerequisiteTag = field.prerequisiteTag;

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
-           context.on('exit.intro', function () {
-             continueTo(rightClickPoint);
-           });
-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.points.update_close', {
-               button: icon('#iD-icon-close', 'inline')
-             }));
-           }, 500);
+           if (entityIDs && !tagsContainFieldKey() && // ignore tagging prerequisites if a value is already present
+           prerequisiteTag) {
+             if (!entityIDs.every(function (entityID) {
+               var entity = context.graph().entity(entityID);

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
-           }
-         }
+               if (prerequisiteTag.key) {
+                 var value = entity.tags[prerequisiteTag.key];
+                 if (!value) return false;

 
 

-         function rightClickPoint() {
-           if (!_pointID) return chapter.restart();
-           var entity = context.hasEntity(_pointID);
-           if (!entity) return chapter.restart();
-           context.enter(modeBrowse(context));
-           var box = pointBox(entity.loc, context);
-           var textId = context.lastPointerType() === 'mouse' ? 'rightclick' : 'edit_menu_touch';
-           reveal(box, helpHtml('intro.points.' + textId), {
-             duration: 600
-           });
-           timeout(function () {
-             context.map().on('move.intro', function () {
-               var entity = context.hasEntity(_pointID);
-               if (!entity) return chapter.restart();
-               var box = pointBox(entity.loc, context);
-               reveal(box, helpHtml('intro.points.' + textId), {
-                 duration: 0
-               });
-             });
-           }, 600); // after reveal
+                 if (prerequisiteTag.valueNot) {
+                   return prerequisiteTag.valueNot !== value;
+                 }

 
 

-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'select') return;
-             var ids = context.selectedIDs();
-             if (ids.length !== 1 || ids[0] !== _pointID) return;
-             timeout(function () {
-               var node = selectMenuItem(context, 'delete').node();
-               if (!node) return;
-               continueTo(enterDelete);
-             }, 50); // after menu visible
-           });
+                 if (prerequisiteTag.value) {
+                   return prerequisiteTag.value === value;
+                 }
+               } else if (prerequisiteTag.keyNot) {
+                 if (entity.tags[prerequisiteTag.keyNot]) return false;
+               }

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro', null);
-             nextStep();
+               return true;
+             })) return false;

            }
            }

-         }

 
 

-         function enterDelete() {
-           if (!_pointID) return chapter.restart();
-           var entity = context.hasEntity(_pointID);
-           if (!entity) return chapter.restart();
-           var node = selectMenuItem(context, 'delete').node();
+           return true;
+         };

 
 

-           if (!node) {
-             return continueTo(rightClickPoint);
+         field.focus = function () {
+           if (field.impl) {
+             field.impl.focus();

            }
            }

+         };

 
 

-           reveal('.edit-menu', helpHtml('intro.points.delete'), {
-             padding: 50
+         return utilRebind(field, dispatch, 'on');
+       }
+
+       function uiFormFields(context) {
+         var moreCombo = uiCombobox(context, 'more-fields').minItems(1);
+         var _fieldsArr = [];
+         var _lastPlaceholder = '';
+         var _state = '';
+         var _klass = '';
+
+         function formFields(selection) {
+           var allowedFields = _fieldsArr.filter(function (field) {
+             return field.isAllowed();

            });
            });

-           timeout(function () {
-             context.map().on('move.intro', function () {
-               reveal('.edit-menu', helpHtml('intro.points.delete'), {
-                 duration: 0,
-                 padding: 50
-               });
-             });
-           }, 300); // after menu visible

 
 

-           context.on('exit.intro', function () {
-             if (!_pointID) return chapter.restart();
-             var entity = context.hasEntity(_pointID);
-             if (entity) return continueTo(rightClickPoint); // point still exists
+           var shown = allowedFields.filter(function (field) {
+             return field.isShown();

            });
            });

-           context.history().on('change.intro', function (changed) {
-             if (changed.deleted().length) {
-               continueTo(undo);
-             }
+           var notShown = allowedFields.filter(function (field) {
+             return !field.isShown();
+           });
+           var container = selection.selectAll('.form-fields-container').data([0]);
+           container = container.enter().append('div').attr('class', 'form-fields-container ' + (_klass || '')).merge(container);
+           var fields = container.selectAll('.wrap-form-field').data(shown, function (d) {
+             return d.id + (d.entityIDs ? d.entityIDs.join() : '');

            });
            });

+           fields.exit().remove(); // Enter

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro', null);
-             context.history().on('change.intro', null);
-             context.on('exit.intro', null);
-             nextStep();
-           }
-         }
+           var enter = fields.enter().append('div').attr('class', function (d) {
+             return 'wrap-form-field wrap-form-field-' + d.safeid;
+           }); // Update

 
 

-         function undo() {
-           context.history().on('change.intro', function () {
-             continueTo(play);
+           fields = fields.merge(enter);
+           fields.order().each(function (d) {
+             select(this).call(d.render);

            });
            });

-           reveal('.top-toolbar button.undo-button', helpHtml('intro.points.undo'));
+           var titles = [];
+           var moreFields = notShown.map(function (field) {
+             var title = field.title();
+             titles.push(title);
+             var terms = field.terms();
+             if (field.key) terms.push(field.key);
+             if (field.keys) terms = terms.concat(field.keys);
+             return {
+               display: field.label(),
+               value: title,
+               title: title,
+               field: field,
+               terms: terms
+             };
+           });
+           var placeholder = titles.slice(0, 3).join(', ') + (titles.length > 3 ? '…' : '');
+           var more = selection.selectAll('.more-fields').data(_state === 'hover' || moreFields.length === 0 ? [] : [0]);
+           more.exit().remove();
+           var moreEnter = more.enter().append('div').attr('class', 'more-fields').append('label');
+           moreEnter.append('span').html(_t.html('inspector.add_fields'));
+           more = moreEnter.merge(more);
+           var input = more.selectAll('.value').data([0]);
+           input.exit().remove();
+           input = input.enter().append('input').attr('class', 'value').attr('type', 'text').attr('placeholder', placeholder).call(utilNoAuto).merge(input);
+           input.call(utilGetSetValue, '').call(moreCombo.data(moreFields).on('accept', function (d) {
+             if (!d) return; // user entered something that was not matched

 
 

-           function continueTo(nextStep) {
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+             var field = d.field;
+             field.show();
+             selection.call(formFields); // rerender

 
 

-         function play() {
-           dispatch$1.call('done');
-           reveal('.ideditor', helpHtml('intro.points.play', {
-             next: _t('intro.areas.title')
-           }), {
-             tooltipBox: '.intro-nav-wrap .chapter-area',
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               reveal('.ideditor');
-             }
-           });
+             field.focus();
+           })); // avoid updating placeholder excessively (triggers style recalc)
+
+           if (_lastPlaceholder !== placeholder) {
+             input.attr('placeholder', placeholder);
+             _lastPlaceholder = placeholder;
+           }

          }
 
          }
 

-         chapter.enter = function () {
-           addPoint();
+         formFields.fieldsArr = function (val) {
+           if (!arguments.length) return _fieldsArr;
+           _fieldsArr = val || [];
+           return formFields;

          };
 
          };
 

-         chapter.exit = function () {
-           timeouts.forEach(window.clearTimeout);
-           context.on('enter.intro exit.intro', null);
-           context.map().on('move.intro drawn.intro', null);
-           context.history().on('change.intro', null);
-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
+         formFields.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return formFields;

          };
 
          };
 

-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
+         formFields.klass = function (val) {
+           if (!arguments.length) return _klass;
+           _klass = val;
+           return formFields;

          };
 
          };
 

-         return utilRebind(chapter, dispatch$1, 'on');
+         return formFields;

        }
 
        }
 

-       function uiIntroArea(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var playground = [-85.63552, 41.94159];
-         var playgroundPreset = _mainPresetIndex.item('leisure/playground');
-         var nameField = _mainPresetIndex.field('name');
-         var descriptionField = _mainPresetIndex.field('description');
-         var timeouts = [];
+       function uiSectionPresetFields(context) {
+         var section = uiSection('preset-fields', context).label(_t.html('inspector.fields')).disclosureContent(renderDisclosureContent);
+         var dispatch = dispatch$8('change', 'revert');
+         var formFields = uiFormFields(context);

 
 

-         var _areaID;
+         var _state;

 
 

-         var chapter = {
-           title: 'intro.areas.title'
-         };
+         var _fieldsArr;

 
 

-         function timeout(f, t) {
-           timeouts.push(window.setTimeout(f, t));
-         }
+         var _presets = [];

 
 

-         function eventCancel(d3_event) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-         }
+         var _tags;

 
 

-         function revealPlayground(center, text, options) {
-           var padding = 180 * Math.pow(2, context.map().zoom() - 19.5);
-           var box = pad(center, padding, context);
-           reveal(box, text, options);
-         }
+         var _entityIDs;

 
 

-         function addArea() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           _areaID = null;
-           var msec = transitionTime(playground, context.map().center());
+         function renderDisclosureContent(selection) {
+           if (!_fieldsArr) {
+             var graph = context.graph();
+             var geometries = Object.keys(_entityIDs.reduce(function (geoms, entityID) {
+               geoms[graph.entity(entityID).geometry(graph)] = true;
+               return geoms;
+             }, {}));
+             var presetsManager = _mainPresetIndex;
+             var allFields = [];
+             var allMoreFields = [];
+             var sharedTotalFields;

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+             _presets.forEach(function (preset) {
+               var fields = preset.fields();
+               var moreFields = preset.moreFields();
+               allFields = utilArrayUnion(allFields, fields);
+               allMoreFields = utilArrayUnion(allMoreFields, moreFields);

 
 

-           context.map().centerZoomEase(playground, 19, msec);
-           timeout(function () {
-             var tooltip = reveal('button.add-area', helpHtml('intro.areas.add_playground'));
-             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-areas');
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'add-area') return;
-               continueTo(startPlayground);
+               if (!sharedTotalFields) {
+                 sharedTotalFields = utilArrayUnion(fields, moreFields);
+               } else {
+                 sharedTotalFields = sharedTotalFields.filter(function (field) {
+                   return fields.indexOf(field) !== -1 || moreFields.indexOf(field) !== -1;
+                 });
+               }

              });
              });

-           }, msec + 100);
-
-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
-
-         function startPlayground() {
-           if (context.mode().id !== 'add-area') {
-             return chapter.restart();
-           }

 
 

-           _areaID = null;
-           context.map().zoomEase(19.5, 500);
-           timeout(function () {
-             var textId = context.lastPointerType() === 'mouse' ? 'starting_node_click' : 'starting_node_tap';
-             var startDrawString = helpHtml('intro.areas.start_playground') + helpHtml('intro.areas.' + textId);
-             revealPlayground(playground, startDrawString, {
-               duration: 250
+             var sharedFields = allFields.filter(function (field) {
+               return sharedTotalFields.indexOf(field) !== -1;

              });
              });

-             timeout(function () {
-               context.map().on('move.intro drawn.intro', function () {
-                 revealPlayground(playground, startDrawString, {
-                   duration: 0
-                 });
-               });
-               context.on('enter.intro', function (mode) {
-                 if (mode.id !== 'draw-area') return chapter.restart();
-                 continueTo(continuePlayground);
-               });
-             }, 250); // after reveal
-           }, 550); // after easing
+             var sharedMoreFields = allMoreFields.filter(function (field) {
+               return sharedTotalFields.indexOf(field) !== -1;
+             });
+             _fieldsArr = [];
+             sharedFields.forEach(function (field) {
+               if (field.matchAllGeometry(geometries)) {
+                 _fieldsArr.push(uiField(context, field, _entityIDs));
+               }
+             });
+             var singularEntity = _entityIDs.length === 1 && graph.hasEntity(_entityIDs[0]);

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+             if (singularEntity && singularEntity.isHighwayIntersection(graph) && presetsManager.field('restrictions')) {
+               _fieldsArr.push(uiField(context, presetsManager.field('restrictions'), _entityIDs));
+             }

 
 

-         function continuePlayground() {
-           if (context.mode().id !== 'draw-area') {
-             return chapter.restart();
-           }
+             var additionalFields = utilArrayUnion(sharedMoreFields, presetsManager.universal());
+             additionalFields.sort(function (field1, field2) {
+               return field1.label().localeCompare(field2.label(), _mainLocalizer.localeCode());
+             });
+             additionalFields.forEach(function (field) {
+               if (sharedFields.indexOf(field) === -1 && field.matchAllGeometry(geometries)) {
+                 _fieldsArr.push(uiField(context, field, _entityIDs, {
+                   show: false
+                 }));
+               }
+             });

 
 

-           _areaID = null;
-           revealPlayground(playground, helpHtml('intro.areas.continue_playground'), {
-             duration: 250
-           });
-           timeout(function () {
-             context.map().on('move.intro drawn.intro', function () {
-               revealPlayground(playground, helpHtml('intro.areas.continue_playground'), {
-                 duration: 0
+             _fieldsArr.forEach(function (field) {
+               field.on('change', function (t, onInput) {
+                 dispatch.call('change', field, _entityIDs, t, onInput);
+               }).on('revert', function (keys) {
+                 dispatch.call('revert', field, keys);

                });
              });
                });
              });

-           }, 250); // after reveal
+           }

 
 

-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-area') {
-               var entity = context.hasEntity(context.selectedIDs()[0]);
+           _fieldsArr.forEach(function (field) {
+             field.state(_state).tags(_tags);
+           });

 
 

-               if (entity && entity.nodes.length >= 6) {
-                 return continueTo(finishPlayground);
-               } else {
-                 return;
-               }
-             } else if (mode.id === 'select') {
-               _areaID = context.selectedIDs()[0];
-               return continueTo(searchPresets);
-             } else {
-               return chapter.restart();
+           selection.call(formFields.fieldsArr(_fieldsArr).state(_state).klass('grouped-items-area'));
+           selection.selectAll('.wrap-form-field input').on('keydown', function (d3_event) {
+             // if user presses enter, and combobox is not active, accept edits..
+             if (d3_event.keyCode === 13 && // ↩ Return
+             context.container().select('.combobox').empty()) {
+               context.enter(modeBrowse(context));

              }
            });
              }
            });

+         }

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+         section.presets = function (val) {
+           if (!arguments.length) return _presets;
+
+           if (!_presets || !val || !utilArrayIdentical(_presets, val)) {
+             _presets = val;
+             _fieldsArr = null;

            }
            }

-         }

 
 

-         function finishPlayground() {
-           if (context.mode().id !== 'draw-area') {
-             return chapter.restart();
+           return section;
+         };
+
+         section.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return section;
+         };
+
+         section.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val; // Don't reset _fieldsArr here.
+
+           return section;
+         };
+
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+
+           if (!val || !_entityIDs || !utilArrayIdentical(_entityIDs, val)) {
+             _entityIDs = val;
+             _fieldsArr = null;

            }
 
            }
 

-           _areaID = null;
-           var finishString = helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.areas.finish_playground');
-           revealPlayground(playground, finishString, {
-             duration: 250
-           });
-           timeout(function () {
-             context.map().on('move.intro drawn.intro', function () {
-               revealPlayground(playground, finishString, {
-                 duration: 0
-               });
-             });
-           }, 250); // after reveal
+           return section;
+         };

 
 

-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-area') {
-               return;
-             } else if (mode.id === 'select') {
-               _areaID = context.selectedIDs()[0];
-               return continueTo(searchPresets);
-             } else {
-               return chapter.restart();
-             }
+         return utilRebind(section, dispatch, 'on');
+       }
+
+       function uiSectionRawMemberEditor(context) {
+         var section = uiSection('raw-member-editor', context).shouldDisplay(function () {
+           if (!_entityIDs || _entityIDs.length !== 1) return false;
+           var entity = context.hasEntity(_entityIDs[0]);
+           return entity && entity.type === 'relation';
+         }).label(function () {
+           var entity = context.hasEntity(_entityIDs[0]);
+           if (!entity) return '';
+           var gt = entity.members.length > _maxMembers ? '>' : '';
+           var count = gt + entity.members.slice(0, _maxMembers).length;
+           return _t('inspector.title_count', {
+             title: _t.html('inspector.members'),
+             count: count

            });
            });

+         }).disclosureContent(renderDisclosureContent);
+         var taginfo = services.taginfo;

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
+         var _entityIDs;
+
+         var _maxMembers = 1000;
+
+         function downloadMember(d3_event, d) {
+           d3_event.preventDefault(); // display the loading indicator
+
+           select(this.parentNode).classed('tag-reference-loading', true);
+           context.loadEntity(d.id, function () {
+             section.reRender();
+           });

          }
 
          }
 

-         function searchPresets() {
-           if (!_areaID || !context.hasEntity(_areaID)) {
-             return addArea();
-           }
+         function zoomToMember(d3_event, d) {
+           d3_event.preventDefault();
+           var entity = context.entity(d.id);
+           context.map().zoomToEase(entity); // highlight the feature in case it wasn't previously on-screen

 
 

-           var ids = context.selectedIDs();
+           utilHighlightEntities([d.id], true, context);
+         }

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
-             context.enter(modeSelect(context, [_areaID]));
-           } // disallow scrolling
+         function selectMember(d3_event, d) {
+           d3_event.preventDefault(); // remove the hover-highlight styling

 
 

+           utilHighlightEntities([d.id], false, context);
+           var entity = context.entity(d.id);
+           var mapExtent = context.map().extent();

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
-             context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-             reveal('.preset-search-input', helpHtml('intro.areas.search_playground', {
-               preset: playgroundPreset.name()
-             }));
-           }, 400); // after preset list pane visible..
+           if (!entity.intersects(mapExtent, context.graph())) {
+             // zoom to the entity if its extent is not visible now
+             context.map().zoomToEase(entity);
+           }

 
 

-           context.on('enter.intro', function (mode) {
-             if (!_areaID || !context.hasEntity(_areaID)) {
-               return continueTo(addArea);
-             }
+           context.enter(modeSelect(context, [d.id]));
+         }

 
 

-             var ids = context.selectedIDs();
+         function changeRole(d3_event, d) {
+           var oldRole = d.role;
+           var newRole = context.cleanRelationRole(select(this).property('value'));

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== _areaID) {
-               // keep the user's area selected..
-               context.enter(modeSelect(context, [_areaID])); // reset pane, in case user somehow happened to change it..
+           if (oldRole !== newRole) {
+             var member = {
+               id: d.id,
+               type: d.type,
+               role: newRole
+             };
+             context.perform(actionChangeMember(d.relation.id, member, d.index), _t('operations.change_role.annotation', {
+               n: 1
+             }));
+             context.validator().validate();
+           }
+         }

 
 

-               context.container().select('.inspector-wrap .panewrap').style('right', '-100%'); // disallow scrolling
+         function deleteMember(d3_event, d) {
+           // remove the hover-highlight styling
+           utilHighlightEntities([d.id], false, context);
+           context.perform(actionDeleteMember(d.relation.id, d.index), _t('operations.delete_member.annotation', {
+             n: 1
+           }));

 
 

-               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-               reveal('.preset-search-input', helpHtml('intro.areas.search_playground', {
-                 preset: playgroundPreset.name()
-               }));
-               context.history().on('change.intro', null);
-             }
-           });
+           if (!context.hasEntity(d.relation.id)) {
+             // Removing the last member will also delete the relation.
+             // If this happens we need to exit the selection mode
+             context.enter(modeBrowse(context));
+           } else {
+             // Changing the mode also runs `validate`, but otherwise we need to
+             // rerun it manually
+             context.validator().validate();
+           }
+         }

 
 

-           function checkPresetSearch() {
-             var first = context.container().select('.preset-list-item:first-child');
+         function renderDisclosureContent(selection) {
+           var entityID = _entityIDs[0];
+           var memberships = [];
+           var entity = context.entity(entityID);
+           entity.members.slice(0, _maxMembers).forEach(function (member, index) {
+             memberships.push({
+               index: index,
+               id: member.id,
+               type: member.type,
+               role: member.role,
+               relation: entity,
+               member: context.hasEntity(member.id),
+               domId: utilUniqueDomId(entityID + '-member-' + index)
+             });
+           });
+           var list = selection.selectAll('.member-list').data([0]);
+           list = list.enter().append('ul').attr('class', 'member-list').merge(list);
+           var items = list.selectAll('li').data(memberships, function (d) {
+             return osmEntity.key(d.relation) + ',' + d.index + ',' + (d.member ? osmEntity.key(d.member) : 'incomplete');
+           });
+           items.exit().each(unbind).remove();
+           var itemsEnter = items.enter().append('li').attr('class', 'member-row form-field').classed('member-incomplete', function (d) {
+             return !d.member;
+           });
+           itemsEnter.each(function (d) {
+             var item = select(this);
+             var label = item.append('label').attr('class', 'field-label').attr('for', d.domId);

 
 

-             if (first.classed('preset-leisure-playground')) {
-               reveal(first.select('.preset-list-button').node(), helpHtml('intro.areas.choose_playground', {
-                 preset: playgroundPreset.name()
-               }), {
-                 duration: 300
+             if (d.member) {
+               // highlight the member feature in the map while hovering on the list item
+               item.on('mouseover', function () {
+                 utilHighlightEntities([d.id], true, context);
+               }).on('mouseout', function () {
+                 utilHighlightEntities([d.id], false, context);

                });
                });

-               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
-               context.history().on('change.intro', function () {
-                 continueTo(clickAddField);
+               var labelLink = label.append('span').attr('class', 'label-text').append('a').attr('href', '#').on('click', selectMember);
+               labelLink.append('span').attr('class', 'member-entity-type').html(function (d) {
+                 var matched = _mainPresetIndex.match(d.member, context.graph());
+                 return matched && matched.name() || utilDisplayType(d.member.id);

                });
                });

+               labelLink.append('span').attr('class', 'member-entity-name').html(function (d) {
+                 return utilDisplayName(d.member);
+               });
+               label.append('button').attr('title', _t('icons.remove')).attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete'));
+               label.append('button').attr('class', 'member-zoom').attr('title', _t('icons.zoom_to')).call(svgIcon('#iD-icon-framed-dot', 'monochrome')).on('click', zoomToMember);
+             } else {
+               var labelText = label.append('span').attr('class', 'label-text');
+               labelText.append('span').attr('class', 'member-entity-type').html(_t.html('inspector.' + d.type, {
+                 id: d.id
+               }));
+               labelText.append('span').attr('class', 'member-entity-name').html(_t.html('inspector.incomplete', {
+                 id: d.id
+               }));
+               label.append('button').attr('class', 'member-download').attr('title', _t('icons.download')).call(svgIcon('#iD-icon-load')).on('click', downloadMember);

              }
              }

-           }
+           });
+           var wrapEnter = itemsEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
+           wrapEnter.append('input').attr('class', 'member-role').attr('id', function (d) {
+             return d.domId;
+           }).property('type', 'text').attr('placeholder', _t('inspector.role')).call(utilNoAuto);

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
-             nextStep();
-           }
-         }
+           if (taginfo) {
+             wrapEnter.each(bindTypeahead);
+           } // update

 
 

-         function clickAddField() {
-           if (!_areaID || !context.hasEntity(_areaID)) {
-             return addArea();
-           }

 
 

-           var ids = context.selectedIDs();
+           items = items.merge(itemsEnter).order();
+           items.select('input.member-role').property('value', function (d) {
+             return d.role;
+           }).on('blur', changeRole).on('change', changeRole);
+           items.select('button.member-delete').on('click', deleteMember);
+           var dragOrigin, targetIndex;
+           items.call(d3_drag().on('start', function (d3_event) {
+             dragOrigin = {
+               x: d3_event.x,
+               y: d3_event.y
+             };
+             targetIndex = null;
+           }).on('drag', function (d3_event) {
+             var x = d3_event.x - dragOrigin.x,
+                 y = d3_event.y - dragOrigin.y;
+             if (!select(this).classed('dragging') && // don't display drag until dragging beyond a distance threshold
+             Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) <= 5) return;
+             var index = items.nodes().indexOf(this);
+             select(this).classed('dragging', true);
+             targetIndex = null;
+             selection.selectAll('li.member-row').style('transform', function (d2, index2) {
+               var node = select(this).node();

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
-             return searchPresets();
-           }
+               if (index === index2) {
+                 return 'translate(' + x + 'px, ' + y + 'px)';
+               } else if (index2 > index && d3_event.y > node.offsetTop) {
+                 if (targetIndex === null || index2 > targetIndex) {
+                   targetIndex = index2;
+                 }

 
 

-           if (!context.container().select('.form-field-description').empty()) {
-             return continueTo(describePlayground);
-           } // disallow scrolling
+                 return 'translateY(-100%)';
+               } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
+                 if (targetIndex === null || index2 < targetIndex) {
+                   targetIndex = index2;
+                 }

 
 

+                 return 'translateY(100%)';
+               }

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '0%'); // It's possible for the user to add a description in a previous step..
-             // If they did this already, just continue to next step.
+               return null;
+             });
+           }).on('end', function (d3_event, d) {
+             if (!select(this).classed('dragging')) return;
+             var index = items.nodes().indexOf(this);
+             select(this).classed('dragging', false);
+             selection.selectAll('li.member-row').style('transform', null);

 
 

-             var entity = context.entity(_areaID);
+             if (targetIndex !== null) {
+               // dragged to a new position, reorder
+               context.perform(actionMoveMember(d.relation.id, index, targetIndex), _t('operations.reorder_members.annotation'));
+               context.validator().validate();
+             }
+           }));

 
 

-             if (entity.tags.description) {
-               return continueTo(play);
-             } // scroll "Add field" into view
+           function bindTypeahead(d) {
+             var row = select(this);
+             var role = row.selectAll('input.member-role');
+             var origValue = role.property('value');

 
 

+             function sort(value, data) {
+               var sameletter = [];
+               var other = [];

 
 

-             var box = context.container().select('.more-fields').node().getBoundingClientRect();
+               for (var i = 0; i < data.length; i++) {
+                 if (data[i].value.substring(0, value.length) === value) {
+                   sameletter.push(data[i]);
+                 } else {
+                   other.push(data[i]);
+                 }
+               }

 
 

-             if (box.top > 300) {
-               var pane = context.container().select('.entity-editor-pane .inspector-body');
-               var start = pane.node().scrollTop;
-               var end = start + (box.top - 300);
-               pane.transition().duration(250).tween('scroll.inspector', function () {
-                 var node = this;
-                 var i = d3_interpolateNumber(start, end);
-                 return function (t) {
-                   node.scrollTop = i(t);
-                 };
-               });
+               return sameletter.concat(other);

              }
 
              }
 

-             timeout(function () {
-               reveal('.more-fields .combobox-input', helpHtml('intro.areas.add_field', {
-                 name: nameField.label(),
-                 description: descriptionField.label()
-               }), {
-                 duration: 300
-               });
-               context.container().select('.more-fields .combobox-input').on('click.intro', function () {
-                 // Watch for the combobox to appear...
-                 var watcher;
-                 watcher = window.setInterval(function () {
-                   if (!context.container().select('div.combobox').empty()) {
-                     window.clearInterval(watcher);
-                     continueTo(chooseDescriptionField);
-                   }
-                 }, 300);
-               });
-             }, 300); // after "Add Field" visible
-           }, 400); // after editor pane visible
+             role.call(uiCombobox(context, 'member-role').fetcher(function (role, callback) {
+               // The `geometry` param is used in the `taginfo.js` interface for
+               // filtering results, as a key into the `tag_members_fractions`
+               // object.  If we don't know the geometry because the member is
+               // not yet downloaded, it's ok to guess based on type.
+               var geometry;

 
 

-           context.on('exit.intro', function () {
-             return continueTo(searchPresets);
-           });
+               if (d.member) {
+                 geometry = context.graph().geometry(d.member.id);
+               } else if (d.type === 'relation') {
+                 geometry = 'relation';
+               } else if (d.type === 'way') {
+                 geometry = 'line';
+               } else {
+                 geometry = 'point';
+               }

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.more-fields .combobox-input').on('click.intro', null);
-             context.on('exit.intro', null);
-             nextStep();
+               var rtype = entity.tags.type;
+               taginfo.roles({
+                 debounce: true,
+                 rtype: rtype || '',
+                 geometry: geometry,
+                 query: role
+               }, function (err, data) {
+                 if (!err) callback(sort(role, data));
+               });
+             }).on('cancel', function () {
+               role.property('value', origValue);
+             }));

            }
            }

-         }

 
 

-         function chooseDescriptionField() {
-           if (!_areaID || !context.hasEntity(_areaID)) {
-             return addArea();
+           function unbind() {
+             var row = select(this);
+             row.selectAll('input.member-role').call(uiCombobox.off, context);

            }
            }

+         }

 
 

-           var ids = context.selectedIDs();
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return section;
+         };

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
-             return searchPresets();
+         return section;
+       }
+
+       function actionDeleteMembers(relationId, memberIndexes) {
+         return function (graph) {
+           // Remove the members in descending order so removals won't shift what members
+           // are at the remaining indexes
+           memberIndexes.sort(function (a, b) {
+             return b - a;
+           });
+
+           for (var i in memberIndexes) {
+             graph = actionDeleteMember(relationId, memberIndexes[i])(graph);

            }
 
            }
 

-           if (!context.container().select('.form-field-description').empty()) {
-             return continueTo(describePlayground);
-           } // Make sure combobox is ready..
+           return graph;
+         };
+       }
+
+       function uiSectionRawMembershipEditor(context) {
+         var section = uiSection('raw-membership-editor', context).shouldDisplay(function () {
+           return _entityIDs && _entityIDs.length;
+         }).label(function () {
+           var parents = getSharedParentRelations();
+           var gt = parents.length > _maxMemberships ? '>' : '';
+           var count = gt + parents.slice(0, _maxMemberships).length;
+           return _t('inspector.title_count', {
+             title: _t.html('inspector.relations'),
+             count: count
+           });
+         }).disclosureContent(renderDisclosureContent);
+         var taginfo = services.taginfo;
+         var nearbyCombo = uiCombobox(context, 'parent-relation').minItems(1).fetcher(fetchNearbyRelations).itemsMouseEnter(function (d3_event, d) {
+           if (d.relation) utilHighlightEntities([d.relation.id], true, context);
+         }).itemsMouseLeave(function (d3_event, d) {
+           if (d.relation) utilHighlightEntities([d.relation.id], false, context);
+         });
+         var _inChange = false;
+         var _entityIDs = [];

 
 

+         var _showBlank;

 
 

-           if (context.container().select('div.combobox').empty()) {
-             return continueTo(clickAddField);
-           } // Watch for the combobox to go away..
+         var _maxMemberships = 1000;

 
 

+         function getSharedParentRelations() {
+           var parents = [];

 
 

-           var watcher;
-           watcher = window.setInterval(function () {
-             if (context.container().select('div.combobox').empty()) {
-               window.clearInterval(watcher);
-               timeout(function () {
-                 if (context.container().select('.form-field-description').empty()) {
-                   continueTo(retryChooseDescription);
-                 } else {
-                   continueTo(describePlayground);
-                 }
-               }, 300); // after description field added.
+           for (var i = 0; i < _entityIDs.length; i++) {
+             var entity = context.graph().hasEntity(_entityIDs[i]);
+             if (!entity) continue;
+
+             if (i === 0) {
+               parents = context.graph().parentRelations(entity);
+             } else {
+               parents = utilArrayIntersection(parents, context.graph().parentRelations(entity));

              }
              }

-           }, 300);
-           reveal('div.combobox', helpHtml('intro.areas.choose_field', {
-             field: descriptionField.label()
-           }), {
-             duration: 300
-           });
-           context.on('exit.intro', function () {
-             return continueTo(searchPresets);
-           });

 
 

-           function continueTo(nextStep) {
-             if (watcher) window.clearInterval(watcher);
-             context.on('exit.intro', null);
-             nextStep();
+             if (!parents.length) break;

            }
            }

+
+           return parents;

          }
 
          }
 

-         function describePlayground() {
-           if (!_areaID || !context.hasEntity(_areaID)) {
-             return addArea();
-           }
+         function getMemberships() {
+           var memberships = [];
+           var relations = getSharedParentRelations().slice(0, _maxMemberships);
+           var isMultiselect = _entityIDs.length > 1;
+           var i, relation, membership, index, member, indexedMember;

 
 

-           var ids = context.selectedIDs();
+           for (i = 0; i < relations.length; i++) {
+             relation = relations[i];
+             membership = {
+               relation: relation,
+               members: [],
+               hash: osmEntity.key(relation)
+             };

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
-             return searchPresets();
-           } // reset pane, in case user happened to change it..
+             for (index = 0; index < relation.members.length; index++) {
+               member = relation.members[index];

 
 

+               if (_entityIDs.indexOf(member.id) !== -1) {
+                 indexedMember = Object.assign({}, member, {
+                   index: index
+                 });
+                 membership.members.push(indexedMember);
+                 membership.hash += ',' + index.toString();

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
+                 if (!isMultiselect) {
+                   // For single selections, list one entry per membership per relation.
+                   // For multiselections, list one entry per relation.
+                   memberships.push(membership);
+                   membership = {
+                     relation: relation,
+                     members: [],
+                     hash: osmEntity.key(relation)
+                   };
+                 }
+               }
+             }

 
 

-           if (context.container().select('.form-field-description').empty()) {
-             return continueTo(retryChooseDescription);
+             if (membership.members.length) memberships.push(membership);

            }
 
            }
 

-           context.on('exit.intro', function () {
-             continueTo(play);
-           });
-           reveal('.entity-editor-pane', helpHtml('intro.areas.describe_playground', {
-             button: icon('#iD-icon-close', 'inline')
-           }), {
-             duration: 300
+           memberships.forEach(function (membership) {
+             membership.domId = utilUniqueDomId('membership-' + membership.relation.id);
+             var roles = [];
+             membership.members.forEach(function (member) {
+               if (roles.indexOf(member.role) === -1) roles.push(member.role);
+             });
+             membership.role = roles.length === 1 ? roles[0] : roles;

            });
            });

+           return memberships;
+         }

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
-           }
+         function selectRelation(d3_event, d) {
+           d3_event.preventDefault(); // remove the hover-highlight styling
+
+           utilHighlightEntities([d.relation.id], false, context);
+           context.enter(modeSelect(context, [d.relation.id]));

          }
 
          }
 

-         function retryChooseDescription() {
-           if (!_areaID || !context.hasEntity(_areaID)) {
-             return addArea();
-           }
+         function zoomToRelation(d3_event, d) {
+           d3_event.preventDefault();
+           var entity = context.entity(d.relation.id);
+           context.map().zoomToEase(entity); // highlight the relation in case it wasn't previously on-screen

 
 

-           var ids = context.selectedIDs();
+           utilHighlightEntities([d.relation.id], true, context);
+         }

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _areaID) {
-             return searchPresets();
-           } // reset pane, in case user happened to change it..
+         function changeRole(d3_event, d) {
+           if (d === 0) return; // called on newrow (shouldn't happen)

 
 

+           if (_inChange) return; // avoid accidental recursive call #5731

 
 

-           context.container().select('.inspector-wrap .panewrap').style('right', '0%');
-           reveal('.entity-editor-pane', helpHtml('intro.areas.retry_add_field', {
-             field: descriptionField.label()
-           }), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(clickAddField);
-             }
-           });
-           context.on('exit.intro', function () {
-             return continueTo(searchPresets);
+           var newRole = context.cleanRelationRole(select(this).property('value'));
+           if (!newRole.trim() && typeof d.role !== 'string') return;
+           var membersToUpdate = d.members.filter(function (member) {
+             return member.role !== newRole;

            });
 
            });
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
+           if (membersToUpdate.length) {
+             _inChange = true;
+             context.perform(function actionChangeMemberRoles(graph) {
+               membersToUpdate.forEach(function (member) {
+                 var newMember = Object.assign({}, member, {
+                   role: newRole
+                 });
+                 delete newMember.index;
+                 graph = actionChangeMember(d.relation.id, newMember, member.index)(graph);
+               });
+               return graph;
+             }, _t('operations.change_role.annotation', {
+               n: membersToUpdate.length
+             }));
+             context.validator().validate();

            }
            }

-         }

 
 

-         function play() {
-           dispatch$1.call('done');
-           reveal('.ideditor', helpHtml('intro.areas.play', {
-             next: _t('intro.lines.title')
-           }), {
-             tooltipBox: '.intro-nav-wrap .chapter-line',
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               reveal('.ideditor');
-             }
-           });
+           _inChange = false;

          }
 
          }
 

-         chapter.enter = function () {
-           addArea();
-         };
+         function addMembership(d, role) {
+           this.blur(); // avoid keeping focus on the button

 
 

-         chapter.exit = function () {
-           timeouts.forEach(window.clearTimeout);
-           context.on('enter.intro exit.intro', null);
-           context.map().on('move.intro drawn.intro', null);
-           context.history().on('change.intro', null);
-           context.container().select('.inspector-wrap').on('wheel.intro', null);
-           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
-           context.container().select('.more-fields .combobox-input').on('click.intro', null);
-         };
+           _showBlank = false;

 
 

-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
-         };
+           function actionAddMembers(relationId, ids, role) {
+             return function (graph) {
+               for (var i in ids) {
+                 var member = {
+                   id: ids[i],
+                   type: graph.entity(ids[i]).type,
+                   role: role
+                 };
+                 graph = actionAddMember(relationId, member)(graph);
+               }

 
 

-         return utilRebind(chapter, dispatch$1, 'on');
-       }
+               return graph;
+             };
+           }

 
 

-       function uiIntroLine(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var timeouts = [];
-         var _tulipRoadID = null;
-         var flowerRoadID = 'w646';
-         var tulipRoadStart = [-85.6297754121684, 41.95805253325314];
-         var tulipRoadMidpoint = [-85.62975395449628, 41.95787501510204];
-         var tulipRoadIntersection = [-85.62974496187628, 41.95742515554585];
-         var roadCategory = _mainPresetIndex.item('category-road_minor');
-         var residentialPreset = _mainPresetIndex.item('highway/residential');
-         var woodRoadID = 'w525';
-         var woodRoadEndID = 'n2862';
-         var woodRoadAddNode = [-85.62390110349587, 41.95397111462291];
-         var woodRoadDragEndpoint = [-85.623867390213, 41.95466987786487];
-         var woodRoadDragMidpoint = [-85.62386254803509, 41.95430395953872];
-         var washingtonStreetID = 'w522';
-         var twelfthAvenueID = 'w1';
-         var eleventhAvenueEndID = 'n3550';
-         var twelfthAvenueEndID = 'n5';
-         var _washingtonSegmentID = null;
-         var eleventhAvenueEnd = context.entity(eleventhAvenueEndID).loc;
-         var twelfthAvenueEnd = context.entity(twelfthAvenueEndID).loc;
-         var deleteLinesLoc = [-85.6219395542764, 41.95228033922477];
-         var twelfthAvenue = [-85.62219310052491, 41.952505413152956];
-         var chapter = {
-           title: 'intro.lines.title'
-         };
+           if (d.relation) {
+             context.perform(actionAddMembers(d.relation.id, _entityIDs, role), _t('operations.add_member.annotation', {
+               n: _entityIDs.length
+             }));
+             context.validator().validate();
+           } else {
+             var relation = osmRelation();
+             context.perform(actionAddEntity(relation), actionAddMembers(relation.id, _entityIDs, role), _t('operations.add.annotation.relation')); // changing the mode also runs `validate`

 
 

-         function timeout(f, t) {
-           timeouts.push(window.setTimeout(f, t));
+             context.enter(modeSelect(context, [relation.id]).newFeature(true));
+           }

          }
 
          }
 

-         function eventCancel(d3_event) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
+         function deleteMembership(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button
+
+           if (d === 0) return; // called on newrow (shouldn't happen)
+           // remove the hover-highlight styling
+
+           utilHighlightEntities([d.relation.id], false, context);
+           var indexes = d.members.map(function (member) {
+             return member.index;
+           });
+           context.perform(actionDeleteMembers(d.relation.id, indexes), _t('operations.delete_member.annotation', {
+             n: _entityIDs.length
+           }));
+           context.validator().validate();

          }
 
          }
 

-         function addLine() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           var msec = transitionTime(tulipRoadStart, context.map().center());
+         function fetchNearbyRelations(q, callback) {
+           var newRelation = {
+             relation: null,
+             value: _t('inspector.new_relation'),
+             display: _t.html('inspector.new_relation')
+           };
+           var entityID = _entityIDs[0];
+           var result = [];
+           var graph = context.graph();

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
+           function baseDisplayLabel(entity) {
+             var matched = _mainPresetIndex.match(entity, graph);
+             var presetName = matched && matched.name() || _t('inspector.relation');
+             var entityName = utilDisplayName(entity) || '';
+             return presetName + ' ' + entityName;

            }
 
            }
 

-           context.map().centerZoomEase(tulipRoadStart, 18.5, msec);
-           timeout(function () {
-             var tooltip = reveal('button.add-line', helpHtml('intro.lines.add_line'));
-             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-lines');
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'add-line') return;
-               continueTo(startLine);
+           var explicitRelation = q && context.hasEntity(q.toLowerCase());
+
+           if (explicitRelation && explicitRelation.type === 'relation' && explicitRelation.id !== entityID) {
+             // loaded relation is specified explicitly, only show that
+             result.push({
+               relation: explicitRelation,
+               value: baseDisplayLabel(explicitRelation) + ' ' + explicitRelation.id

              });
              });

-           }, msec + 100);
+           } else {
+             context.history().intersects(context.map().extent()).forEach(function (entity) {
+               if (entity.type !== 'relation' || entity.id === entityID) return;
+               var value = baseDisplayLabel(entity);
+               if (q && (value + ' ' + entity.id).toLowerCase().indexOf(q.toLowerCase()) === -1) return;
+               result.push({
+                 relation: entity,
+                 value: value
+               });
+             });
+             result.sort(function (a, b) {
+               return osmRelation.creationOrder(a.relation, b.relation);
+             }); // Dedupe identical names by appending relation id - see #2891

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
+             var dupeGroups = Object.values(utilArrayGroupBy(result, 'value')).filter(function (v) {
+               return v.length > 1;
+             });
+             dupeGroups.forEach(function (group) {
+               group.forEach(function (obj) {
+                 obj.value += ' ' + obj.relation.id;
+               });
+             });

            }
            }

-         }

 
 

-         function startLine() {
-           if (context.mode().id !== 'add-line') return chapter.restart();
-           _tulipRoadID = null;
-           var padding = 70 * Math.pow(2, context.map().zoom() - 18);
-           var box = pad(tulipRoadStart, padding, context);
-           box.height = box.height + 100;
-           var textId = context.lastPointerType() === 'mouse' ? 'start_line' : 'start_line_tap';
-           var startLineString = helpHtml('intro.lines.missing_road') + '{br}' + helpHtml('intro.lines.line_draw_info') + helpHtml('intro.lines.' + textId);
-           reveal(box, startLineString);
-           context.map().on('move.intro drawn.intro', function () {
-             padding = 70 * Math.pow(2, context.map().zoom() - 18);
-             box = pad(tulipRoadStart, padding, context);
-             box.height = box.height + 100;
-             reveal(box, startLineString, {
-               duration: 0
-             });
-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'draw-line') return chapter.restart();
-             continueTo(drawLine);
+           result.forEach(function (obj) {
+             obj.title = obj.value;

            });
            });

-
-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
+           result.unshift(newRelation);
+           callback(result);

          }
 
          }
 

-         function drawLine() {
-           if (context.mode().id !== 'draw-line') return chapter.restart();
-           _tulipRoadID = context.mode().selectedIDs()[0];
-           context.map().centerEase(tulipRoadMidpoint, 500);
-           timeout(function () {
-             var padding = 200 * Math.pow(2, context.map().zoom() - 18.5);
-             var box = pad(tulipRoadMidpoint, padding, context);
-             box.height = box.height * 2;
-             reveal(box, helpHtml('intro.lines.intersect', {
-               name: _t('intro.graph.name.flower-street')
-             }));
-             context.map().on('move.intro drawn.intro', function () {
-               padding = 200 * Math.pow(2, context.map().zoom() - 18.5);
-               box = pad(tulipRoadMidpoint, padding, context);
-               box.height = box.height * 2;
-               reveal(box, helpHtml('intro.lines.intersect', {
-                 name: _t('intro.graph.name.flower-street')
-               }), {
-                 duration: 0
-               });
-             });
-           }, 550); // after easing..
+         function renderDisclosureContent(selection) {
+           var memberships = getMemberships();
+           var list = selection.selectAll('.member-list').data([0]);
+           list = list.enter().append('ul').attr('class', 'member-list').merge(list);
+           var items = list.selectAll('li.member-row-normal').data(memberships, function (d) {
+             return d.hash;
+           });
+           items.exit().each(unbind).remove(); // Enter

 
 

-           context.history().on('change.intro', function () {
-             if (isLineConnected()) {
-               continueTo(continueLine);
-             }
+           var itemsEnter = items.enter().append('li').attr('class', 'member-row member-row-normal form-field'); // highlight the relation in the map while hovering on the list item
+
+           itemsEnter.on('mouseover', function (d3_event, d) {
+             utilHighlightEntities([d.relation.id], true, context);
+           }).on('mouseout', function (d3_event, d) {
+             utilHighlightEntities([d.relation.id], false, context);

            });
            });

-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-line') {
-               return;
-             } else if (mode.id === 'select') {
-               continueTo(retryIntersect);
-               return;
-             } else {
-               return chapter.restart();
-             }
+           var labelEnter = itemsEnter.append('label').attr('class', 'field-label').attr('for', function (d) {
+             return d.domId;
+           });
+           var labelLink = labelEnter.append('span').attr('class', 'label-text').append('a').attr('href', '#').on('click', selectRelation);
+           labelLink.append('span').attr('class', 'member-entity-type').html(function (d) {
+             var matched = _mainPresetIndex.match(d.relation, context.graph());
+             return matched && matched.name() || _t('inspector.relation');
+           });
+           labelLink.append('span').attr('class', 'member-entity-name').html(function (d) {
+             return utilDisplayName(d.relation);

            });
            });

+           labelEnter.append('button').attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete')).on('click', deleteMembership);
+           labelEnter.append('button').attr('class', 'member-zoom').attr('title', _t('icons.zoom_to')).call(svgIcon('#iD-icon-framed-dot', 'monochrome')).on('click', zoomToRelation);
+           var wrapEnter = itemsEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
+           wrapEnter.append('input').attr('class', 'member-role').attr('id', function (d) {
+             return d.domId;
+           }).property('type', 'text').property('value', function (d) {
+             return typeof d.role === 'string' ? d.role : '';
+           }).attr('title', function (d) {
+             return Array.isArray(d.role) ? d.role.filter(Boolean).join('\n') : d.role;
+           }).attr('placeholder', function (d) {
+             return Array.isArray(d.role) ? _t('inspector.multiple_roles') : _t('inspector.role');
+           }).classed('mixed', function (d) {
+             return Array.isArray(d.role);
+           }).call(utilNoAuto).on('blur', changeRole).on('change', changeRole);

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+           if (taginfo) {
+             wrapEnter.each(bindTypeahead);

            }
            }

-         }

 
 

-         function isLineConnected() {
-           var entity = _tulipRoadID && context.hasEntity(_tulipRoadID);
+           var newMembership = list.selectAll('.member-row-new').data(_showBlank ? [0] : []); // Exit

 
 

-           if (!entity) return false;
-           var drawNodes = context.graph().childNodes(entity);
-           return drawNodes.some(function (node) {
-             return context.graph().parentWays(node).some(function (parent) {
-               return parent.id === flowerRoadID;
-             });
-           });
-         }
+           newMembership.exit().remove(); // Enter

 
 

-         function retryIntersect() {
-           select(window).on('pointerdown.intro mousedown.intro', eventCancel, true);
-           var box = pad(tulipRoadIntersection, 80, context);
-           reveal(box, helpHtml('intro.lines.retry_intersect', {
-             name: _t('intro.graph.name.flower-street')
-           }));
-           timeout(chapter.restart, 3000);
-         }
+           var newMembershipEnter = newMembership.enter().append('li').attr('class', 'member-row member-row-new form-field');
+           var newLabelEnter = newMembershipEnter.append('label').attr('class', 'field-label');
+           newLabelEnter.append('input').attr('placeholder', _t('inspector.choose_relation')).attr('type', 'text').attr('class', 'member-entity-input').call(utilNoAuto);
+           newLabelEnter.append('button').attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete')).on('click', function () {
+             list.selectAll('.member-row-new').remove();
+           });
+           var newWrapEnter = newMembershipEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
+           newWrapEnter.append('input').attr('class', 'member-role').property('type', 'text').attr('placeholder', _t('inspector.role')).call(utilNoAuto); // Update

 
 

-         function continueLine() {
-           if (context.mode().id !== 'draw-line') return chapter.restart();
+           newMembership = newMembership.merge(newMembershipEnter);
+           newMembership.selectAll('.member-entity-input').on('blur', cancelEntity) // if it wasn't accepted normally, cancel it
+           .call(nearbyCombo.on('accept', acceptEntity).on('cancel', cancelEntity)); // Container for the Add button

 
 

-           var entity = _tulipRoadID && context.hasEntity(_tulipRoadID);
+           var addRow = selection.selectAll('.add-row').data([0]); // enter

 
 

-           if (!entity) return chapter.restart();
-           context.map().centerEase(tulipRoadIntersection, 500);
-           var continueLineText = helpHtml('intro.lines.continue_line') + '{br}' + helpHtml('intro.lines.finish_line_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.lines.finish_road');
-           reveal('.surface', continueLineText);
-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-line') return;else if (mode.id === 'select') return continueTo(chooseCategoryRoad);else return chapter.restart();
-           });
+           var addRowEnter = addRow.enter().append('div').attr('class', 'add-row');
+           var addRelationButton = addRowEnter.append('button').attr('class', 'add-relation');
+           addRelationButton.call(svgIcon('#iD-icon-plus', 'light'));
+           addRelationButton.call(uiTooltip().title(_t.html('inspector.add_to_relation')).placement(_mainLocalizer.textDirection() === 'ltr' ? 'right' : 'left'));
+           addRowEnter.append('div').attr('class', 'space-value'); // preserve space

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
+           // update

 
 

-         function chooseCategoryRoad() {
-           if (context.mode().id !== 'select') return chapter.restart();
-           context.on('exit.intro', function () {
-             return chapter.restart();
+           addRow = addRow.merge(addRowEnter);
+           addRow.select('.add-relation').on('click', function () {
+             _showBlank = true;
+             section.reRender();
+             list.selectAll('.member-entity-input').node().focus();

            });
            });

-           var button = context.container().select('.preset-category-road_minor .preset-list-button');
-           if (button.empty()) return chapter.restart(); // disallow scrolling

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
-             reveal(button.node(), helpHtml('intro.lines.choose_category_road', {
-               category: roadCategory.name()
-             }));
-             button.on('click.intro', function () {
-               continueTo(choosePresetResidential);
-             });
-           }, 400); // after editor pane visible
+           function acceptEntity(d) {
+             if (!d) {
+               cancelEntity();
+               return;
+             } // remove hover-higlighting

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.preset-list-button').on('click.intro', null);
-             context.on('exit.intro', null);
-             nextStep();
+
+             if (d.relation) utilHighlightEntities([d.relation.id], false, context);
+             var role = context.cleanRelationRole(list.selectAll('.member-row-new .member-role').property('value'));
+             addMembership(d, role);

            }
            }

-         }

 
 

-         function choosePresetResidential() {
-           if (context.mode().id !== 'select') return chapter.restart();
-           context.on('exit.intro', function () {
-             return chapter.restart();
-           });
-           var subgrid = context.container().select('.preset-category-road_minor .subgrid');
-           if (subgrid.empty()) return chapter.restart();
-           subgrid.selectAll(':not(.preset-highway-residential) .preset-list-button').on('click.intro', function () {
-             continueTo(retryPresetResidential);
-           });
-           subgrid.selectAll('.preset-highway-residential .preset-list-button').on('click.intro', function () {
-             continueTo(nameRoad);
-           });
-           timeout(function () {
-             reveal(subgrid.node(), helpHtml('intro.lines.choose_preset_residential', {
-               preset: residentialPreset.name()
-             }), {
-               tooltipBox: '.preset-highway-residential .preset-list-button',
-               duration: 300
-             });
-           }, 300);
+           function cancelEntity() {
+             var input = newMembership.selectAll('.member-entity-input');
+             input.property('value', ''); // remove hover-higlighting

 
 

-           function continueTo(nextStep) {
-             context.container().select('.preset-list-button').on('click.intro', null);
-             context.on('exit.intro', null);
-             nextStep();
+             context.surface().selectAll('.highlighted').classed('highlighted', false);

            }
            }

-         } // selected wrong road type

 
 

+           function bindTypeahead(d) {
+             var row = select(this);
+             var role = row.selectAll('input.member-role');
+             var origValue = role.property('value');

 
 

-         function retryPresetResidential() {
-           if (context.mode().id !== 'select') return chapter.restart();
-           context.on('exit.intro', function () {
-             return chapter.restart();
-           }); // disallow scrolling
+             function sort(value, data) {
+               var sameletter = [];
+               var other = [];

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             var button = context.container().select('.entity-editor-pane .preset-list-button');
-             reveal(button.node(), helpHtml('intro.lines.retry_preset_residential', {
-               preset: residentialPreset.name()
+               for (var i = 0; i < data.length; i++) {
+                 if (data[i].value.substring(0, value.length) === value) {
+                   sameletter.push(data[i]);
+                 } else {
+                   other.push(data[i]);
+                 }
+               }
+
+               return sameletter.concat(other);
+             }
+
+             role.call(uiCombobox(context, 'member-role').fetcher(function (role, callback) {
+               var rtype = d.relation.tags.type;
+               taginfo.roles({
+                 debounce: true,
+                 rtype: rtype || '',
+                 geometry: context.graph().geometry(_entityIDs[0]),
+                 query: role
+               }, function (err, data) {
+                 if (!err) callback(sort(role, data));
+               });
+             }).on('cancel', function () {
+               role.property('value', origValue);

              }));
              }));

-             button.on('click.intro', function () {
-               continueTo(chooseCategoryRoad);
-             });
-           }, 500);
+           }

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.preset-list-button').on('click.intro', null);
-             context.on('exit.intro', null);
-             nextStep();
+           function unbind() {
+             var row = select(this);
+             row.selectAll('input.member-role').call(uiCombobox.off, context);

            }
          }
 
            }
          }
 

-         function nameRoad() {
-           context.on('exit.intro', function () {
-             continueTo(didNameRoad);
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _showBlank = false;
+           return section;
+         };
+
+         return section;
+       }
+
+       function uiSectionSelectionList(context) {
+         var _selectedIDs = [];
+         var section = uiSection('selected-features', context).shouldDisplay(function () {
+           return _selectedIDs.length > 1;
+         }).label(function () {
+           return _t('inspector.title_count', {
+             title: _t.html('inspector.features'),
+             count: _selectedIDs.length

            });
            });

-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.lines.name_road', {
-               button: icon('#iD-icon-close', 'inline')
-             }), {
-               tooltipClass: 'intro-lines-name_road'
-             });
-           }, 500);
+         }).disclosureContent(renderDisclosureContent);
+         context.history().on('change.selectionList', function (difference) {
+           if (difference) {
+             section.reRender();
+           }
+         });

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _selectedIDs;
+           _selectedIDs = val;
+           return section;
+         };
+
+         function selectEntity(d3_event, entity) {
+           context.enter(modeSelect(context, [entity.id]));
+         }
+
+         function deselectEntity(d3_event, entity) {
+           var selectedIDs = _selectedIDs.slice();
+
+           var index = selectedIDs.indexOf(entity.id);
+
+           if (index > -1) {
+             selectedIDs.splice(index, 1);
+             context.enter(modeSelect(context, selectedIDs));

            }
          }
 
            }
          }
 

-         function didNameRoad() {
-           context.history().checkpoint('doneAddLine');
-           timeout(function () {
-             reveal('.surface', helpHtml('intro.lines.did_name_road'), {
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: function buttonCallback() {
-                 continueTo(updateLine);
-               }
+         function renderDisclosureContent(selection) {
+           var list = selection.selectAll('.feature-list').data([0]);
+           list = list.enter().append('ul').attr('class', 'feature-list').merge(list);
+
+           var entities = _selectedIDs.map(function (id) {
+             return context.hasEntity(id);
+           }).filter(Boolean);
+
+           var items = list.selectAll('.feature-list-item').data(entities, osmEntity.key);
+           items.exit().remove(); // Enter
+
+           var enter = items.enter().append('li').attr('class', 'feature-list-item').each(function (d) {
+             select(this).on('mouseover', function () {
+               utilHighlightEntities([d.id], true, context);
+             }).on('mouseout', function () {
+               utilHighlightEntities([d.id], false, context);

              });
              });

-           }, 500);
+           });
+           var label = enter.append('button').attr('class', 'label').on('click', selectEntity);
+           label.append('span').attr('class', 'entity-geom-icon').call(svgIcon('', 'pre-text'));
+           label.append('span').attr('class', 'entity-type');
+           label.append('span').attr('class', 'entity-name');
+           enter.append('button').attr('class', 'close').attr('title', _t('icons.deselect')).on('click', deselectEntity).call(svgIcon('#iD-icon-close')); // Update

 
 

-           function continueTo(nextStep) {
-             nextStep();
-           }
+           items = items.merge(enter);
+           items.selectAll('.entity-geom-icon use').attr('href', function () {
+             var entity = this.parentNode.parentNode.__data__;
+             return '#iD-icon-' + entity.geometry(context.graph());
+           });
+           items.selectAll('.entity-type').html(function (entity) {
+             return _mainPresetIndex.match(entity, context.graph()).name();
+           });
+           items.selectAll('.entity-name').html(function (d) {
+             // fetch latest entity
+             var entity = context.entity(d.id);
+             return utilDisplayName(entity);
+           });

          }
 
          }
 

-         function updateLine() {
-           context.history().reset('doneAddLine');
+         return section;
+       }

 
 

-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return chapter.restart();
-           }
+       function uiEntityEditor(context) {
+         var dispatch = dispatch$8('choose');
+         var _state = 'select';
+         var _coalesceChanges = false;
+         var _modified = false;

 
 

-           var msec = transitionTime(woodRoadDragMidpoint, context.map().center());
+         var _base;

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+         var _entityIDs;

 
 

-           context.map().centerZoomEase(woodRoadDragMidpoint, 19, msec);
-           timeout(function () {
-             var padding = 250 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadDragMidpoint, padding, context);
+         var _activePresets = [];

 
 

-             var advance = function advance() {
-               continueTo(addNode);
-             };
+         var _newFeature;

 
 

-             reveal(box, helpHtml('intro.lines.update_line'), {
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: advance
-             });
-             context.map().on('move.intro drawn.intro', function () {
-               var padding = 250 * Math.pow(2, context.map().zoom() - 19);
-               var box = pad(woodRoadDragMidpoint, padding, context);
-               reveal(box, helpHtml('intro.lines.update_line'), {
-                 duration: 0,
-                 buttonText: _t.html('intro.ok'),
-                 buttonCallback: advance
-               });
-             });
-           }, msec + 100);
+         var _sections;

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
-           }
-         }
+         function entityEditor(selection) {
+           var combinedTags = utilCombinedTags(_entityIDs, context.graph()); // Header

 
 

-         function addNode() {
-           context.history().reset('doneAddLine');
+           var header = selection.selectAll('.header').data([0]); // Enter

 
 

-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return chapter.restart();
+           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'preset-reset preset-choose').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-forward' : '#iD-icon-backward'));
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             context.enter(modeBrowse(context));
+           }).call(svgIcon(_modified ? '#iD-icon-apply' : '#iD-icon-close'));
+           headerEnter.append('h3'); // Update
+
+           header = header.merge(headerEnter);
+           header.selectAll('h3').html(_entityIDs.length === 1 ? _t.html('inspector.edit') : _t.html('inspector.edit_features'));
+           header.selectAll('.preset-reset').on('click', function () {
+             dispatch.call('choose', this, _activePresets);
+           }); // Body
+
+           var body = selection.selectAll('.inspector-body').data([0]); // Enter
+
+           var bodyEnter = body.enter().append('div').attr('class', 'entity-editor inspector-body sep-top'); // Update
+
+           body = body.merge(bodyEnter);
+
+           if (!_sections) {
+             _sections = [uiSectionSelectionList(context), uiSectionFeatureType(context).on('choose', function (presets) {
+               dispatch.call('choose', this, presets);
+             }), uiSectionEntityIssues(context), uiSectionPresetFields(context).on('change', changeTags).on('revert', revertTags), uiSectionRawTagEditor('raw-tag-editor', context).on('change', changeTags), uiSectionRawMemberEditor(context), uiSectionRawMembershipEditor(context)];

            }
 
            }
 

-           var padding = 40 * Math.pow(2, context.map().zoom() - 19);
-           var box = pad(woodRoadAddNode, padding, context);
-           var addNodeString = helpHtml('intro.lines.add_node' + (context.lastPointerType() === 'mouse' ? '' : '_touch'));
-           reveal(box, addNodeString);
-           context.map().on('move.intro drawn.intro', function () {
-             var padding = 40 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadAddNode, padding, context);
-             reveal(box, addNodeString, {
-               duration: 0
-             });
-           });
-           context.history().on('change.intro', function (changed) {
-             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-               return continueTo(updateLine);
+           _sections.forEach(function (section) {
+             if (section.entityIDs) {
+               section.entityIDs(_entityIDs);

              }
 
              }
 

-             if (changed.created().length === 1) {
-               timeout(function () {
-                 continueTo(startDragEndpoint);
-               }, 500);
+             if (section.presets) {
+               section.presets(_activePresets);

              }
              }

-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'select') {
-               continueTo(updateLine);
+
+             if (section.tags) {
+               section.tags(combinedTags);

              }
              }

+
+             if (section.state) {
+               section.state(_state);
+             }
+
+             body.call(section.render);

            });
 
            });
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+           context.history().on('change.entity-editor', historyChanged);

 
 

-         function startDragEndpoint() {
-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return continueTo(updateLine);
-           }
+           function historyChanged(difference) {
+             if (selection.selectAll('.entity-editor').empty()) return;
+             if (_state === 'hide') return;
+             var significant = !difference || difference.didChange.properties || difference.didChange.addition || difference.didChange.deletion;
+             if (!significant) return;
+             _entityIDs = _entityIDs.filter(context.hasEntity);
+             if (!_entityIDs.length) return;
+             var priorActivePreset = _activePresets.length === 1 && _activePresets[0];
+             loadActivePresets();
+             var graph = context.graph();
+             entityEditor.modified(_base !== graph);
+             entityEditor(selection);

 
 

-           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-           var box = pad(woodRoadDragEndpoint, padding, context);
-           var startDragString = helpHtml('intro.lines.start_drag_endpoint' + (context.lastPointerType() === 'mouse' ? '' : '_touch')) + helpHtml('intro.lines.drag_to_intersection');
-           reveal(box, startDragString);
-           context.map().on('move.intro drawn.intro', function () {
-             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-               return continueTo(updateLine);
+             if (priorActivePreset && _activePresets.length === 1 && priorActivePreset !== _activePresets[0]) {
+               // flash the button to indicate the preset changed
+               context.container().selectAll('.entity-editor button.preset-reset .label').style('background-color', '#fff').transition().duration(750).style('background-color', null);

              }
              }

+           }
+         } // Tag changes that fire on input can all get coalesced into a single
+         // history operation when the user leaves the field.  #2342
+         // Use explicit entityIDs in case the selection changes before the event is fired.

 
 

-             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadDragEndpoint, padding, context);
-             reveal(box, startDragString, {
-               duration: 0
-             });
-             var entity = context.entity(woodRoadEndID);

 
 

-             if (geoSphericalDistance(entity.loc, woodRoadDragEndpoint) <= 4) {
-               continueTo(finishDragEndpoint);
+         function changeTags(entityIDs, changed, onInput) {
+           var actions = [];
+
+           for (var i in entityIDs) {
+             var entityID = entityIDs[i];
+             var entity = context.entity(entityID);
+             var tags = Object.assign({}, entity.tags); // shallow copy
+
+             for (var k in changed) {
+               if (!k) continue;
+               var v = changed[k];
+
+               if (v !== undefined || tags.hasOwnProperty(k)) {
+                 tags[k] = v;
+               }

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
-           }
-         }
+             if (!onInput) {
+               tags = utilCleanTags(tags);
+             }

 
 

-         function finishDragEndpoint() {
-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return continueTo(updateLine);
+             if (!fastDeepEqual(entity.tags, tags)) {
+               actions.push(actionChangeTags(entityID, tags));
+             }

            }
 
            }
 

-           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-           var box = pad(woodRoadDragEndpoint, padding, context);
-           var finishDragString = helpHtml('intro.lines.spot_looks_good') + helpHtml('intro.lines.finish_drag_endpoint' + (context.lastPointerType() === 'mouse' ? '' : '_touch'));
-           reveal(box, finishDragString);
-           context.map().on('move.intro drawn.intro', function () {
-             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-               return continueTo(updateLine);
-             }
+           if (actions.length) {
+             var combinedAction = function combinedAction(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             };

 
 

-             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadDragEndpoint, padding, context);
-             reveal(box, finishDragString, {
-               duration: 0
-             });
-             var entity = context.entity(woodRoadEndID);
+             var annotation = _t('operations.change_tags.annotation');

 
 

-             if (geoSphericalDistance(entity.loc, woodRoadDragEndpoint) > 4) {
-               continueTo(startDragEndpoint);
+             if (_coalesceChanges) {
+               context.overwrite(combinedAction, annotation);
+             } else {
+               context.perform(combinedAction, annotation);
+               _coalesceChanges = !!onInput;

              }
              }

-           });
-           context.on('enter.intro', function () {
-             continueTo(startDragMidpoint);
-           });
+           } // if leaving field (blur event), rerun validation

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+
+           if (!onInput) {
+             context.validator().validate();

            }
          }
 
            }
          }
 

-         function startDragMidpoint() {
-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return continueTo(updateLine);
-           }
+         function revertTags(keys) {
+           var actions = [];

 
 

-           if (context.selectedIDs().indexOf(woodRoadID) === -1) {
-             context.enter(modeSelect(context, [woodRoadID]));
-           }
+           for (var i in _entityIDs) {
+             var entityID = _entityIDs[i];
+             var original = context.graph().base().entities[entityID];
+             var changed = {};

 
 

-           var padding = 80 * Math.pow(2, context.map().zoom() - 19);
-           var box = pad(woodRoadDragMidpoint, padding, context);
-           reveal(box, helpHtml('intro.lines.start_drag_midpoint'));
-           context.map().on('move.intro drawn.intro', function () {
-             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-               return continueTo(updateLine);
+             for (var j in keys) {
+               var key = keys[j];
+               changed[key] = original ? original.tags[key] : undefined;

              }
 
              }
 

-             var padding = 80 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadDragMidpoint, padding, context);
-             reveal(box, helpHtml('intro.lines.start_drag_midpoint'), {
-               duration: 0
-             });
-           });
-           context.history().on('change.intro', function (changed) {
-             if (changed.created().length === 1) {
-               continueTo(continueDragMidpoint);
-             }
-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'select') {
-               // keep Wood Road selected so midpoint triangles are drawn..
-               context.enter(modeSelect(context, [woodRoadID]));
+             var entity = context.entity(entityID);
+             var tags = Object.assign({}, entity.tags); // shallow copy
+
+             for (var k in changed) {
+               if (!k) continue;
+               var v = changed[k];
+
+               if (v !== undefined || tags.hasOwnProperty(k)) {
+                 tags[k] = v;
+               }

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+             tags = utilCleanTags(tags);

 
 

-         function continueDragMidpoint() {
-           if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-             return continueTo(updateLine);
+             if (!fastDeepEqual(entity.tags, tags)) {
+               actions.push(actionChangeTags(entityID, tags));
+             }

            }
 
            }
 

-           var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-           var box = pad(woodRoadDragEndpoint, padding, context);
-           box.height += 400;
+           if (actions.length) {
+             var combinedAction = function combinedAction(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             };

 
 

-           var advance = function advance() {
-             context.history().checkpoint('doneUpdateLine');
-             continueTo(deleteLines);
-           };
+             var annotation = _t('operations.change_tags.annotation');

 
 

-           reveal(box, helpHtml('intro.lines.continue_drag_midpoint'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: advance
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             if (!context.hasEntity(woodRoadID) || !context.hasEntity(woodRoadEndID)) {
-               return continueTo(updateLine);
+             if (_coalesceChanges) {
+               context.overwrite(combinedAction, annotation);
+             } else {
+               context.perform(combinedAction, annotation);
+               _coalesceChanges = false;

              }
              }

-
-             var padding = 100 * Math.pow(2, context.map().zoom() - 19);
-             var box = pad(woodRoadDragEndpoint, padding, context);
-             box.height += 400;
-             reveal(box, helpHtml('intro.lines.continue_drag_midpoint'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: advance
-             });
-           });
-
-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();

            }
            }

+
+           context.validator().validate();

          }
 
          }
 

-         function deleteLines() {
-           context.history().reset('doneUpdateLine');
-           context.enter(modeBrowse(context));
+         entityEditor.modified = function (val) {
+           if (!arguments.length) return _modified;
+           _modified = val;
+           return entityEditor;
+         };

 
 

-           if (!context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return chapter.restart();
-           }
+         entityEditor.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return entityEditor;
+         };

 
 

-           var msec = transitionTime(deleteLinesLoc, context.map().center());
+         entityEditor.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs; // always reload these even if the entityIDs are unchanged, since we
+           // could be reselecting after something like dragging a node

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+           _base = context.graph();
+           _coalesceChanges = false;
+           if (val && _entityIDs && utilArrayIdentical(_entityIDs, val)) return entityEditor; // exit early if no change

 
 

-           context.map().centerZoomEase(deleteLinesLoc, 18, msec);
-           timeout(function () {
-             var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-             var box = pad(deleteLinesLoc, padding, context);
-             box.top -= 200;
-             box.height += 400;
+           _entityIDs = val;
+           loadActivePresets(true);
+           return entityEditor.modified(false);
+         };

 
 

-             var advance = function advance() {
-               continueTo(rightClickIntersection);
-             };
+         entityEditor.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return entityEditor;
+         };

 
 

-             reveal(box, helpHtml('intro.lines.delete_lines', {
-               street: _t('intro.graph.name.12th-avenue')
-             }), {
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: advance
-             });
-             context.map().on('move.intro drawn.intro', function () {
-               var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-               var box = pad(deleteLinesLoc, padding, context);
-               box.top -= 200;
-               box.height += 400;
-               reveal(box, helpHtml('intro.lines.delete_lines', {
-                 street: _t('intro.graph.name.12th-avenue')
-               }), {
-                 duration: 0,
-                 buttonText: _t.html('intro.ok'),
-                 buttonCallback: advance
-               });
-             });
-             context.history().on('change.intro', function () {
-               timeout(function () {
-                 continueTo(deleteLines);
-               }, 500); // after any transition (e.g. if user deleted intersection)
-             });
-           }, msec + 100);
+         function loadActivePresets(isForNewSelection) {
+           var graph = context.graph();
+           var counts = {};

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
+           for (var i in _entityIDs) {
+             var entity = graph.hasEntity(_entityIDs[i]);
+             if (!entity) return;
+             var match = _mainPresetIndex.match(entity, graph);
+             if (!counts[match.id]) counts[match.id] = 0;
+             counts[match.id] += 1;

            }
            }

-         }

 
 

-         function rightClickIntersection() {
-           context.history().reset('doneUpdateLine');
-           context.enter(modeBrowse(context));
-           context.map().centerZoomEase(eleventhAvenueEnd, 18, 500);
-           var rightClickString = helpHtml('intro.lines.split_street', {
-             street1: _t('intro.graph.name.11th-avenue'),
-             street2: _t('intro.graph.name.washington-street')
-           }) + helpHtml('intro.lines.' + (context.lastPointerType() === 'mouse' ? 'rightclick_intersection' : 'edit_menu_intersection_touch'));
-           timeout(function () {
-             var padding = 60 * Math.pow(2, context.map().zoom() - 18);
-             var box = pad(eleventhAvenueEnd, padding, context);
-             reveal(box, rightClickString);
-             context.map().on('move.intro drawn.intro', function () {
-               var padding = 60 * Math.pow(2, context.map().zoom() - 18);
-               var box = pad(eleventhAvenueEnd, padding, context);
-               reveal(box, rightClickString, {
-                 duration: 0
-               });
-             });
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'select') return;
-               var ids = context.selectedIDs();
-               if (ids.length !== 1 || ids[0] !== eleventhAvenueEndID) return;
-               timeout(function () {
-                 var node = selectMenuItem(context, 'split').node();
-                 if (!node) return;
-                 continueTo(splitIntersection);
-               }, 50); // after menu visible
-             });
-             context.history().on('change.intro', function () {
-               timeout(function () {
-                 continueTo(deleteLines);
-               }, 300); // after any transition (e.g. if user deleted intersection)
-             });
-           }, 600);
+           var matches = Object.keys(counts).sort(function (p1, p2) {
+             return counts[p2] - counts[p1];
+           }).map(function (pID) {
+             return _mainPresetIndex.item(pID);
+           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
+           if (!isForNewSelection) {
+             // A "weak" preset doesn't set any tags. (e.g. "Address")
+             var weakPreset = _activePresets.length === 1 && !_activePresets[0].isFallback() && Object.keys(_activePresets[0].addTags || {}).length === 0; // Don't replace a weak preset with a fallback preset (e.g. "Point")
+
+             if (weakPreset && matches.length === 1 && matches[0].isFallback()) return;

            }
            }

+
+           entityEditor.presets(matches);

          }
 
          }
 

-         function splitIntersection() {
-           if (!context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return continueTo(deleteLines);
+         entityEditor.presets = function (val) {
+           if (!arguments.length) return _activePresets; // don't reload the same preset
+
+           if (!utilArrayIdentical(val, _activePresets)) {
+             _activePresets = val;

            }
 
            }
 

-           var node = selectMenuItem(context, 'split').node();
+           return entityEditor;
+         };

 
 

-           if (!node) {
-             return continueTo(rightClickIntersection);
-           }
+         return utilRebind(entityEditor, dispatch, 'on');
+       }

 
 

-           var wasChanged = false;
-           _washingtonSegmentID = null;
-           reveal('.edit-menu', helpHtml('intro.lines.split_intersection', {
-             street: _t('intro.graph.name.washington-street')
-           }), {
-             padding: 50
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             var node = selectMenuItem(context, 'split').node();
+       function uiPresetList(context) {
+         var dispatch = dispatch$8('cancel', 'choose');

 
 

-             if (!wasChanged && !node) {
-               return continueTo(rightClickIntersection);
+         var _entityIDs;
+
+         var _currLoc;
+
+         var _currentPresets;
+
+         var _autofocus = false;
+
+         function presetList(selection) {
+           if (!_entityIDs) return;
+           var presets = _mainPresetIndex.matchAllGeometry(entityGeometries());
+           selection.html('');
+           var messagewrap = selection.append('div').attr('class', 'header fillL');
+           var message = messagewrap.append('h3').html(_t.html('inspector.choose'));
+           messagewrap.append('button').attr('class', 'preset-choose').on('click', function () {
+             dispatch.call('cancel', this);
+           }).call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward'));
+
+           function initialKeydown(d3_event) {
+             // hack to let delete shortcut work when search is autofocused
+             if (search.property('value').length === 0 && (d3_event.keyCode === utilKeybinding.keyCodes['⌫'] || d3_event.keyCode === utilKeybinding.keyCodes['⌦'])) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               operationDelete(context, _entityIDs)(); // hack to let undo work when search is autofocused
+             } else if (search.property('value').length === 0 && (d3_event.ctrlKey || d3_event.metaKey) && d3_event.keyCode === utilKeybinding.keyCodes.z) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               context.undo();
+             } else if (!d3_event.ctrlKey && !d3_event.metaKey) {
+               // don't check for delete/undo hack on future keydown events
+               select(this).on('keydown', keydown);
+               keydown.call(this, d3_event);

              }
              }

+           }

 
 

-             reveal('.edit-menu', helpHtml('intro.lines.split_intersection', {
-               street: _t('intro.graph.name.washington-street')
-             }), {
-               duration: 0,
-               padding: 50
-             });
-           });
-           context.history().on('change.intro', function (changed) {
-             wasChanged = true;
-             timeout(function () {
-               if (context.history().undoAnnotation() === _t('operations.split.annotation.line', {
-                 n: 1
-               })) {
-                 _washingtonSegmentID = changed.created()[0].id;
-                 continueTo(didSplit);
-               } else {
-                 _washingtonSegmentID = null;
-                 continueTo(retrySplit);
-               }
-             }, 300); // after any transition (e.g. if user deleted intersection)
-           });
+           function keydown(d3_event) {
+             // down arrow
+             if (d3_event.keyCode === utilKeybinding.keyCodes['↓'] && // if insertion point is at the end of the string
+             search.node().selectionStart === search.property('value').length) {
+               d3_event.preventDefault();
+               d3_event.stopPropagation(); // move focus to the first item in the preset list

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
+               var buttons = list.selectAll('.preset-list-button');
+               if (!buttons.empty()) buttons.nodes()[0].focus();
+             }

            }
            }

-         }

 
 

-         function retrySplit() {
-           context.enter(modeBrowse(context));
-           context.map().centerZoomEase(eleventhAvenueEnd, 18, 500);
+           function keypress(d3_event) {
+             // enter
+             var value = search.property('value');

 
 

-           var advance = function advance() {
-             continueTo(rightClickIntersection);
-           };
+             if (d3_event.keyCode === 13 && // ↩ Return
+             value.length) {
+               list.selectAll('.preset-list-item:first-child').each(function (d) {
+                 d.choose.call(this);
+               });
+             }
+           }

 
 

-           var padding = 60 * Math.pow(2, context.map().zoom() - 18);
-           var box = pad(eleventhAvenueEnd, padding, context);
-           reveal(box, helpHtml('intro.lines.retry_split'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: advance
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             var padding = 60 * Math.pow(2, context.map().zoom() - 18);
-             var box = pad(eleventhAvenueEnd, padding, context);
-             reveal(box, helpHtml('intro.lines.retry_split'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: advance
-             });
-           });
+           function inputevent() {
+             var value = search.property('value');
+             list.classed('filtered', value.length);
+             var results, messageText;

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
+             if (value.length) {
+               results = presets.search(value, entityGeometries()[0], _currLoc);
+               messageText = _t('inspector.results', {
+                 n: results.collection.length,
+                 search: value
+               });
+             } else {
+               results = _mainPresetIndex.defaults(entityGeometries()[0], 36, !context.inIntro(), _currLoc);
+               messageText = _t('inspector.choose');
+             }
+
+             list.call(drawList, results);
+             message.html(messageText);

            }
            }

-         }

 
 

-         function didSplit() {
-           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return continueTo(rightClickIntersection);
+           var searchWrap = selection.append('div').attr('class', 'search-header');
+           searchWrap.call(svgIcon('#iD-icon-search', 'pre-text'));
+           var search = searchWrap.append('input').attr('class', 'preset-search-input').attr('placeholder', _t('inspector.search')).attr('type', 'search').call(utilNoAuto).on('keydown', initialKeydown).on('keypress', keypress).on('input', debounce(inputevent));
+
+           if (_autofocus) {
+             search.node().focus(); // Safari 14 doesn't always like to focus immediately,
+             // so try again on the next pass
+
+             setTimeout(function () {
+               search.node().focus();
+             }, 0);

            }
 
            }
 

-           var ids = context.selectedIDs();
-           var string = 'intro.lines.did_split_' + (ids.length > 1 ? 'multi' : 'single');
-           var street = _t('intro.graph.name.washington-street');
-           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-           var box = pad(twelfthAvenue, padding, context);
-           box.width = box.width / 2;
-           reveal(box, helpHtml(string, {
-             street1: street,
-             street2: street
-           }), {
-             duration: 500
-           });
-           timeout(function () {
-             context.map().centerZoomEase(twelfthAvenue, 18, 500);
-             context.map().on('move.intro drawn.intro', function () {
-               var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-               var box = pad(twelfthAvenue, padding, context);
-               box.width = box.width / 2;
-               reveal(box, helpHtml(string, {
-                 street1: street,
-                 street2: street
-               }), {
-                 duration: 0
-               });
-             });
-           }, 600); // after initial reveal and curtain cut
+           var listWrap = selection.append('div').attr('class', 'inspector-body');
+           var list = listWrap.append('div').attr('class', 'preset-list').call(drawList, _mainPresetIndex.defaults(entityGeometries()[0], 36, !context.inIntro(), _currLoc));
+           context.features().on('change.preset-list', updateForFeatureHiddenState);
+         }

 
 

-           context.on('enter.intro', function () {
-             var ids = context.selectedIDs();
+         function drawList(list, presets) {
+           presets = presets.matchAllGeometry(entityGeometries());
+           var collection = presets.collection.reduce(function (collection, preset) {
+             if (!preset) return collection;

 
 

-             if (ids.length === 1 && ids[0] === _washingtonSegmentID) {
-               continueTo(multiSelect);
+             if (preset.members) {
+               if (preset.members.collection.filter(function (preset) {
+                 return preset.addable();
+               }).length > 1) {
+                 collection.push(CategoryItem(preset));
+               }
+             } else if (preset.addable()) {
+               collection.push(PresetItem(preset));

              }
              }

+
+             return collection;
+           }, []);
+           var items = list.selectAll('.preset-list-item').data(collection, function (d) {
+             return d.preset.id;

            });
            });

-           context.history().on('change.intro', function () {
-             if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-               return continueTo(rightClickIntersection);
+           items.order();
+           items.exit().remove();
+           items.enter().append('div').attr('class', function (item) {
+             return 'preset-list-item preset-' + item.preset.id.replace('/', '-');
+           }).classed('current', function (item) {
+             return _currentPresets.indexOf(item.preset) !== -1;
+           }).each(function (item) {
+             select(this).call(item);
+           }).style('opacity', 0).transition().style('opacity', 1);
+           updateForFeatureHiddenState();
+         }
+
+         function itemKeydown(d3_event) {
+           // the actively focused item
+           var item = select(this.closest('.preset-list-item'));
+           var parentItem = select(item.node().parentNode.closest('.preset-list-item')); // arrow down, move focus to the next, lower item
+
+           if (d3_event.keyCode === utilKeybinding.keyCodes['↓']) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation(); // the next item in the list at the same level
+
+             var nextItem = select(item.node().nextElementSibling); // if there is no next item in this list
+
+             if (nextItem.empty()) {
+               // if there is a parent item
+               if (!parentItem.empty()) {
+                 // the item is the last item of a sublist,
+                 // select the next item at the parent level
+                 nextItem = select(parentItem.node().nextElementSibling);
+               } // if the focused item is expanded
+
+             } else if (select(this).classed('expanded')) {
+               // select the first subitem instead
+               nextItem = item.select('.subgrid .preset-list-item:first-child');

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+             if (!nextItem.empty()) {
+               // focus on the next item
+               nextItem.select('.preset-list-button').node().focus();
+             } // arrow up, move focus to the previous, higher item

 
 

-         function multiSelect() {
-           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return continueTo(rightClickIntersection);
-           }
+           } else if (d3_event.keyCode === utilKeybinding.keyCodes['↑']) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation(); // the previous item in the list at the same level

 
 

-           var ids = context.selectedIDs();
-           var hasWashington = ids.indexOf(_washingtonSegmentID) !== -1;
-           var hasTwelfth = ids.indexOf(twelfthAvenueID) !== -1;
+             var previousItem = select(item.node().previousElementSibling); // if there is no previous item in this list

 
 

-           if (hasWashington && hasTwelfth) {
-             return continueTo(multiRightClick);
-           } else if (!hasWashington && !hasTwelfth) {
-             return continueTo(didSplit);
-           }
+             if (previousItem.empty()) {
+               // if there is a parent item
+               if (!parentItem.empty()) {
+                 // the item is the first subitem of a sublist select the parent item
+                 previousItem = parentItem;
+               } // if the previous item is expanded

 
 

-           context.map().centerZoomEase(twelfthAvenue, 18, 500);
-           timeout(function () {
-             var selected, other, padding, box;
+             } else if (previousItem.select('.preset-list-button').classed('expanded')) {
+               // select the last subitem of the sublist of the previous item
+               previousItem = previousItem.select('.subgrid .preset-list-item:last-child');
+             }

 
 

-             if (hasWashington) {
-               selected = _t('intro.graph.name.washington-street');
-               other = _t('intro.graph.name.12th-avenue');
-               padding = 60 * Math.pow(2, context.map().zoom() - 18);
-               box = pad(twelfthAvenueEnd, padding, context);
-               box.width *= 3;
+             if (!previousItem.empty()) {
+               // focus on the previous item
+               previousItem.select('.preset-list-button').node().focus();

              } else {
              } else {

-               selected = _t('intro.graph.name.12th-avenue');
-               other = _t('intro.graph.name.washington-street');
-               padding = 200 * Math.pow(2, context.map().zoom() - 18);
-               box = pad(twelfthAvenue, padding, context);
-               box.width /= 2;
-             }
+               // the focus is at the top of the list, move focus back to the search field
+               var search = select(this.closest('.preset-list-pane')).select('.preset-search-input');
+               search.node().focus();
+             } // arrow left, move focus to the parent item if there is one

 
 

-             reveal(box, helpHtml('intro.lines.multi_select', {
-               selected: selected,
-               other1: other
-             }) + ' ' + helpHtml('intro.lines.add_to_selection_' + (context.lastPointerType() === 'mouse' ? 'click' : 'touch'), {
-               selected: selected,
-               other2: other
-             }));
-             context.map().on('move.intro drawn.intro', function () {
-               if (hasWashington) {
-                 selected = _t('intro.graph.name.washington-street');
-                 other = _t('intro.graph.name.12th-avenue');
-                 padding = 60 * Math.pow(2, context.map().zoom() - 18);
-                 box = pad(twelfthAvenueEnd, padding, context);
-                 box.width *= 3;
-               } else {
-                 selected = _t('intro.graph.name.12th-avenue');
-                 other = _t('intro.graph.name.washington-street');
-                 padding = 200 * Math.pow(2, context.map().zoom() - 18);
-                 box = pad(twelfthAvenue, padding, context);
-                 box.width /= 2;
-               }
+           } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '→' : '←']) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation(); // if there is a parent item, focus on the parent item

 
 

-               reveal(box, helpHtml('intro.lines.multi_select', {
-                 selected: selected,
-                 other1: other
-               }) + ' ' + helpHtml('intro.lines.add_to_selection_' + (context.lastPointerType() === 'mouse' ? 'click' : 'touch'), {
-                 selected: selected,
-                 other2: other
-               }), {
-                 duration: 0
-               });
-             });
-             context.on('enter.intro', function () {
-               continueTo(multiSelect);
-             });
-             context.history().on('change.intro', function () {
-               if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-                 return continueTo(rightClickIntersection);
-               }
-             });
-           }, 600);
+             if (!parentItem.empty()) {
+               parentItem.select('.preset-list-button').node().focus();
+             } // arrow right, choose this item

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
+           } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '←' : '→']) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation();
+             item.datum().choose.call(select(this).node());

            }
          }
 
            }
          }
 

-         function multiRightClick() {
-           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return continueTo(rightClickIntersection);
-           }
+         function CategoryItem(preset) {
+           var box,
+               sublist,
+               shown = false;

 
 

-           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-           var box = pad(twelfthAvenue, padding, context);
-           var rightClickString = helpHtml('intro.lines.multi_select_success') + helpHtml('intro.lines.multi_' + (context.lastPointerType() === 'mouse' ? 'rightclick' : 'edit_menu_touch'));
-           reveal(box, rightClickString);
-           context.map().on('move.intro drawn.intro', function () {
-             var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-             var box = pad(twelfthAvenue, padding, context);
-             reveal(box, rightClickString, {
-               duration: 0
-             });
-           });
-           context.ui().editMenu().on('toggled.intro', function (open) {
-             if (!open) return;
-             timeout(function () {
-               var ids = context.selectedIDs();
+           function item(selection) {
+             var wrap = selection.append('div').attr('class', 'preset-list-button-wrap category');

 
 

-               if (ids.length === 2 && ids.indexOf(twelfthAvenueID) !== -1 && ids.indexOf(_washingtonSegmentID) !== -1) {
-                 var node = selectMenuItem(context, 'delete').node();
-                 if (!node) return;
-                 continueTo(multiDelete);
-               } else if (ids.length === 1 && ids.indexOf(_washingtonSegmentID) !== -1) {
-                 return continueTo(multiSelect);
+             function click() {
+               var isExpanded = select(this).classed('expanded');
+               var iconName = isExpanded ? _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward' : '#iD-icon-down';
+               select(this).classed('expanded', !isExpanded);
+               select(this).selectAll('div.label-inner svg.icon use').attr('href', iconName);
+               item.choose();
+             }
+
+             var geometries = entityGeometries();
+             var button = wrap.append('button').attr('class', 'preset-list-button').classed('expanded', false).call(uiPresetIcon().geometry(geometries.length === 1 && geometries[0]).preset(preset)).on('click', click).on('keydown', function (d3_event) {
+               // right arrow, expand the focused item
+               if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '←' : '→']) {
+                 d3_event.preventDefault();
+                 d3_event.stopPropagation(); // if the item isn't expanded
+
+                 if (!select(this).classed('expanded')) {
+                   // toggle expansion (expand the item)
+                   click.call(this, d3_event);
+                 } // left arrow, collapse the focused item
+
+               } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '→' : '←']) {
+                 d3_event.preventDefault();
+                 d3_event.stopPropagation(); // if the item is expanded
+
+                 if (select(this).classed('expanded')) {
+                   // toggle expansion (collapse the item)
+                   click.call(this, d3_event);
+                 }

                } else {
                } else {

-                 return continueTo(didSplit);
+                 itemKeydown.call(this, d3_event);

                }
                }

-             }, 300); // after edit menu visible
-           });
-           context.history().on('change.intro', function () {
-             if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-               return continueTo(rightClickIntersection);
+             });
+             var label = button.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
+             label.append('div').attr('class', 'namepart').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward', 'inline')).append('span').html(function () {
+               return preset.nameLabel() + '&hellip;';
+             });
+             box = selection.append('div').attr('class', 'subgrid').style('max-height', '0px').style('opacity', 0);
+             box.append('div').attr('class', 'arrow');
+             sublist = box.append('div').attr('class', 'preset-list fillL3');
+           }
+
+           item.choose = function () {
+             if (!box || !sublist) return;
+
+             if (shown) {
+               shown = false;
+               box.transition().duration(200).style('opacity', '0').style('max-height', '0px').style('padding-bottom', '0px');
+             } else {
+               shown = true;
+               var members = preset.members.matchAllGeometry(entityGeometries());
+               sublist.call(drawList, members);
+               box.transition().duration(200).style('opacity', '1').style('max-height', 200 + members.collection.length * 190 + 'px').style('padding-bottom', '10px');

              }
              }

-           });
+           };

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.ui().editMenu().on('toggled.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
+           item.preset = preset;
+           return item;

          }
 
          }
 

-         function multiDelete() {
-           if (!_washingtonSegmentID || !context.hasEntity(_washingtonSegmentID) || !context.hasEntity(washingtonStreetID) || !context.hasEntity(twelfthAvenueID) || !context.hasEntity(eleventhAvenueEndID)) {
-             return continueTo(rightClickIntersection);
+         function PresetItem(preset) {
+           function item(selection) {
+             var wrap = selection.append('div').attr('class', 'preset-list-button-wrap');
+             var geometries = entityGeometries();
+             var button = wrap.append('button').attr('class', 'preset-list-button').call(uiPresetIcon().geometry(geometries.length === 1 && geometries[0]).preset(preset)).on('click', item.choose).on('keydown', itemKeydown);
+             var label = button.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
+             var nameparts = [preset.nameLabel(), preset.subtitleLabel()].filter(Boolean);
+             label.selectAll('.namepart').data(nameparts).enter().append('div').attr('class', 'namepart').html(function (d) {
+               return d;
+             });
+             wrap.call(item.reference.button);
+             selection.call(item.reference.body);

            }
 
            }
 

-           var node = selectMenuItem(context, 'delete').node();
-           if (!node) return continueTo(multiRightClick);
-           reveal('.edit-menu', helpHtml('intro.lines.multi_delete'), {
-             padding: 50
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             reveal('.edit-menu', helpHtml('intro.lines.multi_delete'), {
-               duration: 0,
-               padding: 50
-             });
-           });
-           context.on('exit.intro', function () {
-             if (context.hasEntity(_washingtonSegmentID) || context.hasEntity(twelfthAvenueID)) {
-               return continueTo(multiSelect); // left select mode but roads still exist
-             }
-           });
-           context.history().on('change.intro', function () {
-             if (context.hasEntity(_washingtonSegmentID) || context.hasEntity(twelfthAvenueID)) {
-               continueTo(retryDelete); // changed something but roads still exist
-             } else {
-               continueTo(play);
+           item.choose = function () {
+             if (select(this).classed('disabled')) return;
+
+             if (!context.inIntro()) {
+               _mainPresetIndex.setMostRecent(preset, entityGeometries()[0]);

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('exit.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
+             context.perform(function (graph) {
+               for (var i in _entityIDs) {
+                 var entityID = _entityIDs[i];
+                 var oldPreset = _mainPresetIndex.match(graph.entity(entityID), graph);
+                 graph = actionChangePreset(entityID, oldPreset, preset)(graph);
+               }
+
+               return graph;
+             }, _t('operations.change_tags.annotation'));
+             context.validator().validate(); // rerun validation
+
+             dispatch.call('choose', this, preset);
+           };
+
+           item.help = function (d3_event) {
+             d3_event.stopPropagation();
+             item.reference.toggle();
+           };
+
+           item.preset = preset;
+           item.reference = uiTagReference(preset.reference());
+           return item;

          }
 
          }
 

-         function retryDelete() {
-           context.enter(modeBrowse(context));
-           var padding = 200 * Math.pow(2, context.map().zoom() - 18);
-           var box = pad(twelfthAvenue, padding, context);
-           reveal(box, helpHtml('intro.lines.retry_delete'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(multiSelect);
+         function updateForFeatureHiddenState() {
+           if (!_entityIDs.every(context.hasEntity)) return;
+           var geometries = entityGeometries();
+           var button = context.container().selectAll('.preset-list .preset-list-button'); // remove existing tooltips
+
+           button.call(uiTooltip().destroyAny);
+           button.each(function (item, index) {
+             var hiddenPresetFeaturesId;
+
+             for (var i in geometries) {
+               hiddenPresetFeaturesId = context.features().isHiddenPreset(item.preset, geometries[i]);
+               if (hiddenPresetFeaturesId) break;

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             nextStep();
-           }
-         }
+             var isHiddenPreset = !context.inIntro() && !!hiddenPresetFeaturesId && (_currentPresets.length !== 1 || item.preset !== _currentPresets[0]);
+             select(this).classed('disabled', isHiddenPreset);

 
 

-         function play() {
-           dispatch$1.call('done');
-           reveal('.ideditor', helpHtml('intro.lines.play', {
-             next: _t('intro.buildings.title')
-           }), {
-             tooltipBox: '.intro-nav-wrap .chapter-building',
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               reveal('.ideditor');
+             if (isHiddenPreset) {
+               var isAutoHidden = context.features().autoHidden(hiddenPresetFeaturesId);
+               select(this).call(uiTooltip().title(_t.html('inspector.hidden_preset.' + (isAutoHidden ? 'zoom' : 'manual'), {
+                 features: _t.html('feature.' + hiddenPresetFeaturesId + '.description')
+               })).placement(index < 2 ? 'bottom' : 'top'));

              }
            });
          }
 
              }
            });
          }
 

-         chapter.enter = function () {
-           addLine();
+         presetList.autofocus = function (val) {
+           if (!arguments.length) return _autofocus;
+           _autofocus = val;
+           return presetList;

          };
 
          };
 

-         chapter.exit = function () {
-           timeouts.forEach(window.clearTimeout);
-           select(window).on('pointerdown.intro mousedown.intro', null, true);
-           context.on('enter.intro exit.intro', null);
-           context.map().on('move.intro drawn.intro', null);
-           context.history().on('change.intro', null);
-           context.container().select('.inspector-wrap').on('wheel.intro', null);
-           context.container().select('.preset-list-button').on('click.intro', null);
+         presetList.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _currLoc = null;
+
+           if (_entityIDs && _entityIDs.length) {
+             // calculate current location
+             var extent = _entityIDs.reduce(function (extent, entityID) {
+               var entity = context.graph().entity(entityID);
+               return extent.extend(entity.extent(context.graph()));
+             }, geoExtent());
+
+             _currLoc = extent.center(); // match presets
+
+             var presets = _entityIDs.map(function (entityID) {
+               return _mainPresetIndex.match(context.entity(entityID), context.graph());
+             });
+
+             presetList.presets(presets);
+           }
+
+           return presetList;

          };
 
          };
 

-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
+         presetList.presets = function (val) {
+           if (!arguments.length) return _currentPresets;
+           _currentPresets = val;
+           return presetList;

          };
 
          };
 

-         return utilRebind(chapter, dispatch$1, 'on');
-       }
+         function entityGeometries() {
+           var counts = {};

 
 

-       function uiIntroBuilding(context, reveal) {
-         var dispatch$1 = dispatch('done');
-         var house = [-85.62815, 41.95638];
-         var tank = [-85.62732, 41.95347];
-         var buildingCatetory = _mainPresetIndex.item('category-building');
-         var housePreset = _mainPresetIndex.item('building/house');
-         var tankPreset = _mainPresetIndex.item('man_made/storage_tank');
-         var timeouts = [];
-         var _houseID = null;
-         var _tankID = null;
-         var chapter = {
-           title: 'intro.buildings.title'
-         };
+           for (var i in _entityIDs) {
+             var entityID = _entityIDs[i];
+             var entity = context.entity(entityID);
+             var geometry = entity.geometry(context.graph()); // Treat entities on addr:interpolation lines as points, not vertices (#3241)

 
 

-         function timeout(f, t) {
-           timeouts.push(window.setTimeout(f, t));
-         }
+             if (geometry === 'vertex' && entity.isOnAddressLine(context.graph())) {
+               geometry = 'point';
+             }

 
 

-         function eventCancel(d3_event) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-         }
+             if (!counts[geometry]) counts[geometry] = 0;
+             counts[geometry] += 1;
+           }

 
 

-         function revealHouse(center, text, options) {
-           var padding = 160 * Math.pow(2, context.map().zoom() - 20);
-           var box = pad(center, padding, context);
-           reveal(box, text, options);
+           return Object.keys(counts).sort(function (geom1, geom2) {
+             return counts[geom2] - counts[geom1];
+           });

          }
 
          }
 

-         function revealTank(center, text, options) {
-           var padding = 190 * Math.pow(2, context.map().zoom() - 19.5);
-           var box = pad(center, padding, context);
-           reveal(box, text, options);
-         }
+         return utilRebind(presetList, dispatch, 'on');
+       }

 
 

-         function addHouse() {
-           context.enter(modeBrowse(context));
-           context.history().reset('initial');
-           _houseID = null;
-           var msec = transitionTime(house, context.map().center());
+       function uiViewOnOSM(context) {
+         var _what; // an osmEntity or osmNote

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }

 
 

-           context.map().centerZoomEase(house, 19, msec);
-           timeout(function () {
-             var tooltip = reveal('button.add-area', helpHtml('intro.buildings.add_building'));
-             tooltip.selectAll('.popover-inner').insert('svg', 'span').attr('class', 'tooltip-illustration').append('use').attr('xlink:href', '#iD-graphic-buildings');
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'add-area') return;
-               continueTo(startHouse);
-             });
-           }, msec + 100);
+         function viewOnOSM(selection) {
+           var url;

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
+           if (_what instanceof osmEntity) {
+             url = context.connection().entityURL(_what);
+           } else if (_what instanceof osmNote) {
+             url = context.connection().noteURL(_what);

            }
            }

+
+           var data = !_what || _what.isNew() ? [] : [_what];
+           var link = selection.selectAll('.view-on-osm').data(data, function (d) {
+             return d.id;
+           }); // exit
+
+           link.exit().remove(); // enter
+
+           var linkEnter = link.enter().append('a').attr('class', 'view-on-osm').attr('target', '_blank').attr('href', url).call(svgIcon('#iD-icon-out-link', 'inline'));
+           linkEnter.append('span').html(_t.html('inspector.view_on_osm'));

          }
 
          }
 

-         function startHouse() {
-           if (context.mode().id !== 'add-area') {
-             return continueTo(addHouse);
-           }
+         viewOnOSM.what = function (_) {
+           if (!arguments.length) return _what;
+           _what = _;
+           return viewOnOSM;
+         };

 
 

-           _houseID = null;
-           context.map().zoomEase(20, 500);
-           timeout(function () {
-             var startString = helpHtml('intro.buildings.start_building') + helpHtml('intro.buildings.building_corner_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap'));
-             revealHouse(house, startString);
-             context.map().on('move.intro drawn.intro', function () {
-               revealHouse(house, startString, {
-                 duration: 0
-               });
-             });
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'draw-area') return chapter.restart();
-               continueTo(continueHouse);
-             });
-           }, 550); // after easing
+         return viewOnOSM;
+       }

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+       function uiInspector(context) {
+         var presetList = uiPresetList(context);
+         var entityEditor = uiEntityEditor(context);
+         var wrap = select(null),
+             presetPane = select(null),
+             editorPane = select(null);
+         var _state = 'select';
+
+         var _entityIDs;
+
+         var _newFeature = false;
+
+         function inspector(selection) {
+           presetList.entityIDs(_entityIDs).autofocus(_newFeature).on('choose', inspector.setPreset).on('cancel', function () {
+             inspector.setPreset();
+           });
+           entityEditor.state(_state).entityIDs(_entityIDs).on('choose', inspector.showList);
+           wrap = selection.selectAll('.panewrap').data([0]);
+           var enter = wrap.enter().append('div').attr('class', 'panewrap');
+           enter.append('div').attr('class', 'preset-list-pane pane');
+           enter.append('div').attr('class', 'entity-editor-pane pane');
+           wrap = wrap.merge(enter);
+           presetPane = wrap.selectAll('.preset-list-pane');
+           editorPane = wrap.selectAll('.entity-editor-pane');
+
+           function shouldDefaultToPresetList() {
+             // always show the inspector on hover
+             if (_state !== 'select') return false; // can only change preset on single selection
+
+             if (_entityIDs.length !== 1) return false;
+             var entityID = _entityIDs[0];
+             var entity = context.hasEntity(entityID);
+             if (!entity) return false; // default to inspector if there are already tags
+
+             if (entity.hasNonGeometryTags()) return false; // prompt to select preset if feature is new and untagged
+
+             if (_newFeature) return true; // all existing features except vertices should default to inspector
+
+             if (entity.geometry(context.graph()) !== 'vertex') return false; // show vertex relations if any
+
+             if (context.graph().parentRelations(entity).length) return false; // show vertex issues if there are any
+
+             if (context.validator().getEntityIssues(entityID).length) return false; // show turn retriction editor for junction vertices
+
+             if (entity.isHighwayIntersection(context.graph())) return false; // otherwise show preset list for uninteresting vertices
+
+             return true;

            }
            }

-         }

 
 

-         function continueHouse() {
-           if (context.mode().id !== 'draw-area') {
-             return continueTo(addHouse);
+           if (shouldDefaultToPresetList()) {
+             wrap.style('right', '-100%');
+             editorPane.classed('hide', true);
+             presetPane.classed('hide', false).call(presetList);
+           } else {
+             wrap.style('right', '0%');
+             presetPane.classed('hide', true);
+             editorPane.classed('hide', false).call(entityEditor);

            }
 
            }
 

-           _houseID = null;
-           var continueString = helpHtml('intro.buildings.continue_building') + '{br}' + helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.buildings.finish_building');
-           revealHouse(house, continueString);
-           context.map().on('move.intro drawn.intro', function () {
-             revealHouse(house, continueString, {
-               duration: 0
-             });
-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-area') {
-               return;
-             } else if (mode.id === 'select') {
-               var graph = context.graph();
-               var way = context.entity(context.selectedIDs()[0]);
-               var nodes = graph.childNodes(way);
-               var points = utilArrayUniq(nodes).map(function (n) {
-                 return context.projection(n.loc);
-               });
+           var footer = selection.selectAll('.footer').data([0]);
+           footer = footer.enter().append('div').attr('class', 'footer').merge(footer);
+           footer.call(uiViewOnOSM(context).what(context.hasEntity(_entityIDs.length === 1 && _entityIDs[0])));
+         }

 
 

-               if (isMostlySquare(points)) {
-                 _houseID = way.id;
-                 return continueTo(chooseCategoryBuilding);
-               } else {
-                 return continueTo(retryHouse);
-               }
-             } else {
-               return chapter.restart();
-             }
+         inspector.showList = function (presets) {
+           presetPane.classed('hide', false);
+           wrap.transition().styleTween('right', function () {
+             return interpolate$1('0%', '-100%');
+           }).on('end', function () {
+             editorPane.classed('hide', true);

            });
 
            });
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+           if (presets) {
+             presetList.presets(presets);

            }
            }

-         }

 
 

-         function retryHouse() {
-           var onClick = function onClick() {
-             continueTo(addHouse);
-           };
+           presetPane.call(presetList.autofocus(true));
+         };

 
 

-           revealHouse(house, helpHtml('intro.buildings.retry_building'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: onClick
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             revealHouse(house, helpHtml('intro.buildings.retry_building'), {
-               duration: 0,
-               buttonText: _t.html('intro.ok'),
-               buttonCallback: onClick
+         inspector.setPreset = function (preset) {
+           // upon setting multipolygon, go to the area preset list instead of the editor
+           if (preset && preset.id === 'type/multipolygon') {
+             presetPane.call(presetList.autofocus(true));
+           } else {
+             editorPane.classed('hide', false);
+             wrap.transition().styleTween('right', function () {
+               return interpolate$1('-100%', '0%');
+             }).on('end', function () {
+               presetPane.classed('hide', true);

              });
              });

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             nextStep();
-           }
-         }
+             if (preset) {
+               entityEditor.presets([preset]);
+             }

 
 

-         function chooseCategoryBuilding() {
-           if (!_houseID || !context.hasEntity(_houseID)) {
-             return addHouse();
+             editorPane.call(entityEditor);

            }
            }

+         };

 
 

-           var ids = context.selectedIDs();
+         inspector.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           entityEditor.state(_state); // remove any old field help overlay that might have gotten attached to the inspector

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
-             context.enter(modeSelect(context, [_houseID]));
-           } // disallow scrolling
+           context.container().selectAll('.field-help-body').remove();
+           return inspector;
+         };

 
 

+         inspector.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return inspector;
+         };

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
-             var button = context.container().select('.preset-category-building .preset-list-button');
-             reveal(button.node(), helpHtml('intro.buildings.choose_category_building', {
-               category: buildingCatetory.name()
-             }));
-             button.on('click.intro', function () {
-               button.on('click.intro', null);
-               continueTo(choosePresetHouse);
-             });
-           }, 400); // after preset list pane visible..
+         inspector.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return inspector;
+         };

 
 

-           context.on('enter.intro', function (mode) {
-             if (!_houseID || !context.hasEntity(_houseID)) {
-               return continueTo(addHouse);
-             }
+         return inspector;
+       }

 
 

-             var ids = context.selectedIDs();
+       function uiImproveOsmComments() {
+         var _qaItem;

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
-               return continueTo(chooseCategoryBuilding);
-             }
+         function issueComments(selection) {
+           // make the div immediately so it appears above the buttons
+           var comments = selection.selectAll('.comments-container').data([0]);
+           comments = comments.enter().append('div').attr('class', 'comments-container').merge(comments); // must retrieve comments from API before they can be displayed
+
+           services.improveOSM.getComments(_qaItem).then(function (d) {
+             if (!d.comments) return; // nothing to do here
+
+             var commentEnter = comments.selectAll('.comment').data(d.comments).enter().append('div').attr('class', 'comment');
+             commentEnter.append('div').attr('class', 'comment-avatar').call(svgIcon('#iD-icon-avatar', 'comment-avatar-icon'));
+             var mainEnter = commentEnter.append('div').attr('class', 'comment-main');
+             var metadataEnter = mainEnter.append('div').attr('class', 'comment-metadata');
+             metadataEnter.append('div').attr('class', 'comment-author').each(function (d) {
+               var osm = services.osm;
+               var selection = select(this);
+
+               if (osm && d.username) {
+                 selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.username)).attr('target', '_blank');
+               }
+
+               selection.html(function (d) {
+                 return d.username;
+               });
+             });
+             metadataEnter.append('div').attr('class', 'comment-date').html(function (d) {
+               return _t.html('note.status.commented', {
+                 when: localeDateString(d.timestamp)
+               });
+             });
+             mainEnter.append('div').attr('class', 'comment-text').append('p').html(function (d) {
+               return d.text;
+             });
+           })["catch"](function (err) {
+             console.log(err); // eslint-disable-line no-console

            });
            });

+         }

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.preset-list-button').on('click.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
+         function localeDateString(s) {
+           if (!s) return null;
+           var options = {
+             day: 'numeric',
+             month: 'short',
+             year: 'numeric'
+           };
+           var d = new Date(s * 1000); // timestamp is served in seconds, date takes ms
+
+           if (isNaN(d.getTime())) return null;
+           return d.toLocaleDateString(_mainLocalizer.localeCode(), options);

          }
 
          }
 

-         function choosePresetHouse() {
-           if (!_houseID || !context.hasEntity(_houseID)) {
-             return addHouse();
-           }
+         issueComments.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return issueComments;
+         };

 
 

-           var ids = context.selectedIDs();
+         return issueComments;
+       }

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
-             context.enter(modeSelect(context, [_houseID]));
-           } // disallow scrolling
+       function uiImproveOsmDetails(context) {
+         var _qaItem;

 
 

+         function issueDetail(d) {
+           if (d.desc) return d.desc;
+           var issueKey = d.issueKey;
+           d.replacements = d.replacements || {};
+           d.replacements["default"] = _t.html('inspector.unknown'); // special key `default` works as a fallback string

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
-             var button = context.container().select('.preset-building-house .preset-list-button');
-             reveal(button.node(), helpHtml('intro.buildings.choose_preset_house', {
-               preset: housePreset.name()
-             }), {
-               duration: 300
-             });
-             button.on('click.intro', function () {
-               button.on('click.intro', null);
-               continueTo(closeEditorHouse);
-             });
-           }, 400); // after preset list pane visible..
+           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".description"), d.replacements);
+         }

 
 

-           context.on('enter.intro', function (mode) {
-             if (!_houseID || !context.hasEntity(_houseID)) {
-               return continueTo(addHouse);
-             }
+         function improveOsmDetails(selection) {
+           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           });
+           details.exit().remove();
+           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // description

 
 

-             var ids = context.selectedIDs();
+           var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+           descriptionEnter.append('h4').html(_t.html('QA.keepRight.detail_description'));
+           descriptionEnter.append('div').attr('class', 'qa-details-description-text').html(issueDetail); // If there are entity links in the error message..
+
+           var relatedEntities = [];
+           descriptionEnter.selectAll('.error_entity_link, .error_object_link').attr('href', '#').each(function () {
+             var link = select(this);
+             var isObjectLink = link.classed('error_object_link');
+             var entityID = isObjectLink ? utilEntityRoot(_qaItem.objectType) + _qaItem.objectId : this.textContent;
+             var entity = context.hasEntity(entityID);
+             relatedEntities.push(entityID); // Add click handler
+
+             link.on('mouseenter', function () {
+               utilHighlightEntities([entityID], true, context);
+             }).on('mouseleave', function () {
+               utilHighlightEntities([entityID], false, context);
+             }).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               utilHighlightEntities([entityID], false, context);
+               var osmlayer = context.layers().layer('osm');

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
-               return continueTo(chooseCategoryBuilding);
-             }
-           });
+               if (!osmlayer.enabled()) {
+                 osmlayer.enabled(true);
+               }

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.container().select('.preset-list-button').on('click.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+               context.map().centerZoom(_qaItem.loc, 20);

 
 

-         function closeEditorHouse() {
-           if (!_houseID || !context.hasEntity(_houseID)) {
-             return addHouse();
-           }
+               if (entity) {
+                 context.enter(modeSelect(context, [entityID]));
+               } else {
+                 context.loadEntity(entityID, function (err, result) {
+                   if (err) return;
+                   var entity = result.data.find(function (e) {
+                     return e.id === entityID;
+                   });
+                   if (entity) context.enter(modeSelect(context, [entityID]));
+                 });
+               }
+             }); // Replace with friendly name if possible
+             // (The entity may not yet be loaded into the graph)

 
 

-           var ids = context.selectedIDs();
+             if (entity) {
+               var name = utilDisplayName(entity); // try to use common name

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
-             context.enter(modeSelect(context, [_houseID]));
-           }
+               if (!name && !isObjectLink) {
+                 var preset = _mainPresetIndex.match(entity, context.graph());
+                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
+               }

 
 

-           context.history().checkpoint('hasHouse');
-           context.on('exit.intro', function () {
-             continueTo(rightClickHouse);
-           });
-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
-               button: icon('#iD-icon-close', 'inline')
-             }));
-           }, 500);
+               if (name) {
+                 this.innerText = name;
+               }
+             }
+           }); // Don't hide entities related to this error - #5880

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
-           }
+           context.features().forceVisible(relatedEntities);
+           context.map().pan([0, 0]); // trigger a redraw

          }
 
          }
 

-         function rightClickHouse() {
-           if (!_houseID) return chapter.restart();
-           context.enter(modeBrowse(context));
-           context.history().reset('hasHouse');
-           var zoom = context.map().zoom();
-
-           if (zoom < 20) {
-             zoom = 20;
-           }
+         improveOsmDetails.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmDetails;
+         };

 
 

-           context.map().centerZoomEase(house, zoom, 500);
-           context.on('enter.intro', function (mode) {
-             if (mode.id !== 'select') return;
-             var ids = context.selectedIDs();
-             if (ids.length !== 1 || ids[0] !== _houseID) return;
-             timeout(function () {
-               var node = selectMenuItem(context, 'orthogonalize').node();
-               if (!node) return;
-               continueTo(clickSquare);
-             }, 50); // after menu visible
-           });
-           context.map().on('move.intro drawn.intro', function () {
-             var rightclickString = helpHtml('intro.buildings.' + (context.lastPointerType() === 'mouse' ? 'rightclick_building' : 'edit_menu_building_touch'));
-             revealHouse(house, rightclickString, {
-               duration: 0
-             });
-           });
-           context.history().on('change.intro', function () {
-             continueTo(rightClickHouse);
-           });
+         return improveOsmDetails;
+       }

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+       function uiImproveOsmHeader() {
+         var _qaItem;

 
 

-         function clickSquare() {
-           if (!_houseID) return chapter.restart();
-           var entity = context.hasEntity(_houseID);
-           if (!entity) return continueTo(rightClickHouse);
-           var node = selectMenuItem(context, 'orthogonalize').node();
+         function issueTitle(d) {
+           var issueKey = d.issueKey;
+           d.replacements = d.replacements || {};
+           d.replacements["default"] = _t.html('inspector.unknown'); // special key `default` works as a fallback string

 
 

-           if (!node) {
-             return continueTo(rightClickHouse);
-           }
+           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".title"), d.replacements);
+         }

 
 

-           var wasChanged = false;
-           reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
-             padding: 50
+         function improveOsmHeader(selection) {
+           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);

            });
            });

-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'browse') {
-               continueTo(rightClickHouse);
-             } else if (mode.id === 'move' || mode.id === 'rotate') {
-               continueTo(retryClickSquare);
-             }
+           header.exit().remove();
+           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
+           var svgEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
+             return d.id < 0;
+           }).append('svg').attr('width', '20px').attr('height', '30px').attr('viewbox', '0 0 20 30').attr('class', function (d) {
+             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);

            });
            });

-           context.map().on('move.intro', function () {
-             var node = selectMenuItem(context, 'orthogonalize').node();
+           svgEnter.append('polygon').attr('fill', 'currentColor').attr('class', 'qaItem-fill').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
+           svgEnter.append('use').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('transform', 'translate(3.5, 5)').attr('xlink:href', function (d) {
+             var picon = d.icon;

 
 

-             if (!wasChanged && !node) {
-               return continueTo(rightClickHouse);
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return "#".concat(picon).concat(isMaki ? '-11' : '');

              }
              }

-
-             reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
-               duration: 0,
-               padding: 50
-             });
-           });
-           context.history().on('change.intro', function () {
-             wasChanged = true;
-             context.history().on('change.intro', null); // Something changed.  Wait for transition to complete and check undo annotation.
-
-             timeout(function () {
-               if (context.history().undoAnnotation() === _t('operations.orthogonalize.annotation.feature', {
-                 n: 1
-               })) {
-                 continueTo(doneSquare);
-               } else {
-                 continueTo(retryClickSquare);
-               }
-             }, 500); // after transitioned actions

            });
            });

-
-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
+           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);

          }
 
          }
 

-         function retryClickSquare() {
-           context.enter(modeBrowse(context));
-           revealHouse(house, helpHtml('intro.buildings.retry_square'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(rightClickHouse);
-             }
-           });
+         improveOsmHeader.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmHeader;
+         };

 
 

-           function continueTo(nextStep) {
-             nextStep();
-           }
-         }
+         return improveOsmHeader;
+       }

 
 

-         function doneSquare() {
-           context.history().checkpoint('doneSquare');
-           revealHouse(house, helpHtml('intro.buildings.done_square'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(addTank);
-             }
-           });
+       function uiImproveOsmEditor(context) {
+         var dispatch = dispatch$8('change');
+         var qaDetails = uiImproveOsmDetails(context);
+         var qaComments = uiImproveOsmComments();
+         var qaHeader = uiImproveOsmHeader();

 
 

-           function continueTo(nextStep) {
-             nextStep();
-           }
+         var _qaItem;
+
+         function improveOsmEditor(selection) {
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             return context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('QA.improveOSM.title'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body);
+           var editor = body.selectAll('.qa-editor').data([0]);
+           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(qaComments.issue(_qaItem)).call(improveOsmSaveSection);

          }
 
          }
 

-         function addTank() {
-           context.enter(modeBrowse(context));
-           context.history().reset('doneSquare');
-           _tankID = null;
-           var msec = transitionTime(tank, context.map().center());
+         function improveOsmSaveSection(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+           var isShown = _qaItem && (isSelected || _qaItem.newComment || _qaItem.comment);
+           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           }); // exit

 
 

-           context.map().centerZoomEase(tank, 19.5, msec);
-           timeout(function () {
-             reveal('button.add-area', helpHtml('intro.buildings.add_tank'));
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'add-area') return;
-               continueTo(startTank);
-             });
-           }, msec + 100);
+           saveSection.exit().remove(); // enter

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
+           saveSectionEnter.append('h4').attr('class', '.qa-save-header').html(_t.html('note.newComment'));
+           saveSectionEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('QA.keepRight.comment_placeholder')).attr('maxlength', 1000).property('value', function (d) {
+             return d.newComment;
+           }).call(utilNoAuto).on('input', changeInput).on('blur', changeInput); // update

 
 

-         function startTank() {
-           if (context.mode().id !== 'add-area') {
-             return continueTo(addTank);
-           }
+           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);

 
 

-           _tankID = null;
-           timeout(function () {
-             var startString = helpHtml('intro.buildings.start_tank') + helpHtml('intro.buildings.tank_edge_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap'));
-             revealTank(tank, startString);
-             context.map().on('move.intro drawn.intro', function () {
-               revealTank(tank, startString, {
-                 duration: 0
-               });
-             });
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'draw-area') return chapter.restart();
-               continueTo(continueTank);
-             });
-           }, 550); // after easing
+           function changeInput() {
+             var input = select(this);
+             var val = input.property('value').trim();

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+             if (val === '') {
+               val = undefined;
+             } // store the unsaved comment with the issue itself

 
 

-         function continueTank() {
-           if (context.mode().id !== 'draw-area') {
-             return continueTo(addTank);
-           }

 
 

-           _tankID = null;
-           var continueString = helpHtml('intro.buildings.continue_tank') + '{br}' + helpHtml('intro.areas.finish_area_' + (context.lastPointerType() === 'mouse' ? 'click' : 'tap')) + helpHtml('intro.buildings.finish_tank');
-           revealTank(tank, continueString);
-           context.map().on('move.intro drawn.intro', function () {
-             revealTank(tank, continueString, {
-               duration: 0
+             _qaItem = _qaItem.update({
+               newComment: val

              });
              });

-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-area') {
-               return;
-             } else if (mode.id === 'select') {
-               _tankID = context.selectedIDs()[0];
-               return continueTo(searchPresetTank);
-             } else {
-               return continueTo(addTank);
+             var qaService = services.improveOSM;
+
+             if (qaService) {
+               qaService.replaceItem(_qaItem);

              }
              }

-           });

 
 

-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+             saveSection.call(qaSaveButtons);

            }
          }
 
            }
          }
 

-         function searchPresetTank() {
-           if (!_tankID || !context.hasEntity(_tankID)) {
-             return addTank();
-           }
-
-           var ids = context.selectedIDs();
+         function qaSaveButtons(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
-             context.enter(modeSelect(context, [_tankID]));
-           } // disallow scrolling
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

+           buttonSection.exit().remove(); // enter

 
 

-           context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-           timeout(function () {
-             // reset pane, in case user somehow happened to change it..
-             context.container().select('.inspector-wrap .panewrap').style('right', '-100%');
-             context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-             reveal('.preset-search-input', helpHtml('intro.buildings.search_tank', {
-               preset: tankPreset.name()
-             }));
-           }, 400); // after preset list pane visible..
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+           buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('QA.keepRight.save_comment'));
+           buttonEnter.append('button').attr('class', 'button close-button action');
+           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update

 
 

-           context.on('enter.intro', function (mode) {
-             if (!_tankID || !context.hasEntity(_tankID)) {
-               return continueTo(addTank);
-             }
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.select('.comment-button').attr('disabled', function (d) {
+             return d.newComment ? null : true;
+           }).on('click.comment', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-             var ids = context.selectedIDs();
+             var qaService = services.improveOSM;

 
 

-             if (mode.id !== 'select' || !ids.length || ids[0] !== _tankID) {
-               // keep the user's area selected..
-               context.enter(modeSelect(context, [_tankID])); // reset pane, in case user somehow happened to change it..
+             if (qaService) {
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }
+           });
+           buttonSection.select('.close-button').html(function (d) {
+             var andComment = d.newComment ? '_comment' : '';
+             return _t.html("QA.keepRight.close".concat(andComment));
+           }).on('click.close', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-               context.container().select('.inspector-wrap .panewrap').style('right', '-100%'); // disallow scrolling
+             var qaService = services.improveOSM;

 
 

-               context.container().select('.inspector-wrap').on('wheel.intro', eventCancel);
-               context.container().select('.preset-search-input').on('keydown.intro', null).on('keyup.intro', checkPresetSearch);
-               reveal('.preset-search-input', helpHtml('intro.buildings.search_tank', {
-                 preset: tankPreset.name()
-               }));
-               context.history().on('change.intro', null);
+             if (qaService) {
+               d.newStatus = 'SOLVED';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });

              }
            });
              }
            });

+           buttonSection.select('.ignore-button').html(function (d) {
+             var andComment = d.newComment ? '_comment' : '';
+             return _t.html("QA.keepRight.ignore".concat(andComment));
+           }).on('click.ignore', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-           function checkPresetSearch() {
-             var first = context.container().select('.preset-list-item:first-child');
+             var qaService = services.improveOSM;

 
 

-             if (first.classed('preset-man_made-storage_tank')) {
-               reveal(first.select('.preset-list-button').node(), helpHtml('intro.buildings.choose_tank', {
-                 preset: tankPreset.name()
-               }), {
-                 duration: 300
-               });
-               context.container().select('.preset-search-input').on('keydown.intro', eventCancel, true).on('keyup.intro', null);
-               context.history().on('change.intro', function () {
-                 continueTo(closeEditorTank);
+             if (qaService) {
+               d.newStatus = 'INVALID';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);

                });
              }
                });
              }

-           }
+           });
+         } // NOTE: Don't change method name until UI v3 is merged

 
 

-           function continueTo(nextStep) {
-             context.container().select('.inspector-wrap').on('wheel.intro', null);
-             context.on('enter.intro', null);
-             context.history().on('change.intro', null);
-             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
-             nextStep();
-           }
-         }

 
 

-         function closeEditorTank() {
-           if (!_tankID || !context.hasEntity(_tankID)) {
-             return addTank();
-           }
+         improveOsmEditor.error = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmEditor;
+         };

 
 

-           var ids = context.selectedIDs();
+         return utilRebind(improveOsmEditor, dispatch, 'on');
+       }

 
 

-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
-             context.enter(modeSelect(context, [_tankID]));
-           }
+       function uiKeepRightDetails(context) {
+         var _qaItem;

 
 

-           context.history().checkpoint('hasTank');
-           context.on('exit.intro', function () {
-             continueTo(rightClickTank);
-           });
-           timeout(function () {
-             reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
-               button: icon('#iD-icon-close', 'inline')
-             }));
-           }, 500);
+         function issueDetail(d) {
+           var itemType = d.itemType,
+               parentIssueType = d.parentIssueType;
+           var unknown = _t.html('inspector.unknown');
+           var replacements = d.replacements || {};
+           replacements["default"] = unknown; // special key `default` works as a fallback string

 
 

-           function continueTo(nextStep) {
-             context.on('exit.intro', null);
-             nextStep();
+           var detail = _t.html("QA.keepRight.errorTypes.".concat(itemType, ".description"), replacements);
+
+           if (detail === unknown) {
+             detail = _t.html("QA.keepRight.errorTypes.".concat(parentIssueType, ".description"), replacements);

            }
            }

+
+           return detail;

          }
 
          }
 

-         function rightClickTank() {
-           if (!_tankID) return continueTo(addTank);
-           context.enter(modeBrowse(context));
-           context.history().reset('hasTank');
-           context.map().centerEase(tank, 500);
-           timeout(function () {
-             context.on('enter.intro', function (mode) {
-               if (mode.id !== 'select') return;
-               var ids = context.selectedIDs();
-               if (ids.length !== 1 || ids[0] !== _tankID) return;
-               timeout(function () {
-                 var node = selectMenuItem(context, 'circularize').node();
-                 if (!node) return;
-                 continueTo(clickCircle);
-               }, 50); // after menu visible
-             });
-             var rightclickString = helpHtml('intro.buildings.' + (context.lastPointerType() === 'mouse' ? 'rightclick_tank' : 'edit_menu_tank_touch'));
-             revealTank(tank, rightclickString);
-             context.map().on('move.intro drawn.intro', function () {
-               revealTank(tank, rightclickString, {
-                 duration: 0
-               });
-             });
-             context.history().on('change.intro', function () {
-               continueTo(rightClickTank);
-             });
-           }, 600);
+         function keepRightDetails(selection) {
+           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           });
+           details.exit().remove();
+           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // description

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+           var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+           descriptionEnter.append('h4').html(_t.html('QA.keepRight.detail_description'));
+           descriptionEnter.append('div').attr('class', 'qa-details-description-text').html(issueDetail); // If there are entity links in the error message..
+
+           var relatedEntities = [];
+           descriptionEnter.selectAll('.error_entity_link, .error_object_link').attr('href', '#').each(function () {
+             var link = select(this);
+             var isObjectLink = link.classed('error_object_link');
+             var entityID = isObjectLink ? utilEntityRoot(_qaItem.objectType) + _qaItem.objectId : this.textContent;
+             var entity = context.hasEntity(entityID);
+             relatedEntities.push(entityID); // Add click handler
+
+             link.on('mouseenter', function () {
+               utilHighlightEntities([entityID], true, context);
+             }).on('mouseleave', function () {
+               utilHighlightEntities([entityID], false, context);
+             }).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               utilHighlightEntities([entityID], false, context);
+               var osmlayer = context.layers().layer('osm');

 
 

-         function clickCircle() {
-           if (!_tankID) return chapter.restart();
-           var entity = context.hasEntity(_tankID);
-           if (!entity) return continueTo(rightClickTank);
-           var node = selectMenuItem(context, 'circularize').node();
+               if (!osmlayer.enabled()) {
+                 osmlayer.enabled(true);
+               }

 
 

-           if (!node) {
-             return continueTo(rightClickTank);
-           }
+               context.map().centerZoomEase(_qaItem.loc, 20);

 
 

-           var wasChanged = false;
-           reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
-             padding: 50
-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'browse') {
-               continueTo(rightClickTank);
-             } else if (mode.id === 'move' || mode.id === 'rotate') {
-               continueTo(retryClickCircle);
-             }
-           });
-           context.map().on('move.intro', function () {
-             var node = selectMenuItem(context, 'circularize').node();
+               if (entity) {
+                 context.enter(modeSelect(context, [entityID]));
+               } else {
+                 context.loadEntity(entityID, function (err, result) {
+                   if (err) return;
+                   var entity = result.data.find(function (e) {
+                     return e.id === entityID;
+                   });
+                   if (entity) context.enter(modeSelect(context, [entityID]));
+                 });
+               }
+             }); // Replace with friendly name if possible
+             // (The entity may not yet be loaded into the graph)

 
 

-             if (!wasChanged && !node) {
-               return continueTo(rightClickTank);
-             }
+             if (entity) {
+               var name = utilDisplayName(entity); // try to use common name

 
 

-             reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
-               duration: 0,
-               padding: 50
-             });
-           });
-           context.history().on('change.intro', function () {
-             wasChanged = true;
-             context.history().on('change.intro', null); // Something changed.  Wait for transition to complete and check undo annotation.
+               if (!name && !isObjectLink) {
+                 var preset = _mainPresetIndex.match(entity, context.graph());
+                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
+               }

 
 

-             timeout(function () {
-               if (context.history().undoAnnotation() === _t('operations.circularize.annotation.feature', {
-                 n: 1
-               })) {
-                 continueTo(play);
-               } else {
-                 continueTo(retryClickCircle);
+               if (name) {
+                 this.innerText = name;

                }
                }

-             }, 500); // after transitioned actions
-           });
+             }
+           }); // Don't hide entities related to this issue - #5880

 
 

-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
+           context.features().forceVisible(relatedEntities);
+           context.map().pan([0, 0]); // trigger a redraw

          }
 
          }
 

-         function retryClickCircle() {
-           context.enter(modeBrowse(context));
-           revealTank(tank, helpHtml('intro.buildings.retry_circle'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(rightClickTank);
-             }
-           });
+         keepRightDetails.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return keepRightDetails;
+         };

 
 

-           function continueTo(nextStep) {
-             nextStep();
+         return keepRightDetails;
+       }
+
+       function uiKeepRightHeader() {
+         var _qaItem;
+
+         function issueTitle(d) {
+           var itemType = d.itemType,
+               parentIssueType = d.parentIssueType;
+           var unknown = _t.html('inspector.unknown');
+           var replacements = d.replacements || {};
+           replacements["default"] = unknown; // special key `default` works as a fallback string
+
+           var title = _t.html("QA.keepRight.errorTypes.".concat(itemType, ".title"), replacements);
+
+           if (title === unknown) {
+             title = _t.html("QA.keepRight.errorTypes.".concat(parentIssueType, ".title"), replacements);

            }
            }

+
+           return title;

          }
 
          }
 

-         function play() {
-           dispatch$1.call('done');
-           reveal('.ideditor', helpHtml('intro.buildings.play', {
-             next: _t('intro.startediting.title')
-           }), {
-             tooltipBox: '.intro-nav-wrap .chapter-startEditing',
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               reveal('.ideditor');
-             }
+         function keepRightHeader(selection) {
+           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           });
+           header.exit().remove();
+           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
+           var iconEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
+             return d.id < 0;

            });
            });

+           iconEnter.append('div').attr('class', function (d) {
+             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.parentIssueType);
+           }).call(svgIcon('#iD-icon-bolt', 'qaItem-fill'));
+           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);

          }
 
          }
 

-         chapter.enter = function () {
-           addHouse();
+         keepRightHeader.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return keepRightHeader;

          };
 
          };
 

-         chapter.exit = function () {
-           timeouts.forEach(window.clearTimeout);
-           context.on('enter.intro exit.intro', null);
-           context.map().on('move.intro drawn.intro', null);
-           context.history().on('change.intro', null);
-           context.container().select('.inspector-wrap').on('wheel.intro', null);
-           context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
-           context.container().select('.more-fields .combobox-input').on('click.intro', null);
-         };
+         return keepRightHeader;
+       }

 
 

-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
+       function uiViewOnKeepRight() {
+         var _qaItem;
+
+         function viewOnKeepRight(selection) {
+           var url;
+
+           if (services.keepRight && _qaItem instanceof QAItem) {
+             url = services.keepRight.issueURL(_qaItem);
+           }
+
+           var link = selection.selectAll('.view-on-keepRight').data(url ? [url] : []); // exit
+
+           link.exit().remove(); // enter
+
+           var linkEnter = link.enter().append('a').attr('class', 'view-on-keepRight').attr('target', '_blank').attr('rel', 'noopener') // security measure
+           .attr('href', function (d) {
+             return d;
+           }).call(svgIcon('#iD-icon-out-link', 'inline'));
+           linkEnter.append('span').html(_t.html('inspector.view_on_keepRight'));
+         }
+
+         viewOnKeepRight.what = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return viewOnKeepRight;

          };
 
          };
 

-         return utilRebind(chapter, dispatch$1, 'on');
+         return viewOnKeepRight;

        }
 
        }
 

-       function uiIntroStartEditing(context, reveal) {
-         var dispatch$1 = dispatch('done', 'startEditing');
-         var modalSelection = select(null);
-         var chapter = {
-           title: 'intro.startediting.title'
-         };
+       function uiKeepRightEditor(context) {
+         var dispatch = dispatch$8('change');
+         var qaDetails = uiKeepRightDetails(context);
+         var qaHeader = uiKeepRightHeader();

 
 

-         function showHelp() {
-           reveal('.map-control.help-control', helpHtml('intro.startediting.help'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               shortcuts();
-             }
-           });
-         }
+         var _qaItem;

 
 

-         function shortcuts() {
-           reveal('.map-control.help-control', helpHtml('intro.startediting.shortcuts'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               showSave();
-             }
-           });
+         function keepRightEditor(selection) {
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             return context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('QA.keepRight.title'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body);
+           var editor = body.selectAll('.qa-editor').data([0]);
+           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(keepRightSaveSection);
+           var footer = selection.selectAll('.footer').data([0]);
+           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnKeepRight().what(_qaItem));

          }
 
          }
 

-         function showSave() {
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+         function keepRightSaveSection(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-           reveal('.top-toolbar button.save', helpHtml('intro.startediting.save'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               showStart();
-             }
-           });
-         }
+           var isShown = _qaItem && (isSelected || _qaItem.newComment || _qaItem.comment);
+           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           }); // exit

 
 

-         function showStart() {
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+           saveSection.exit().remove(); // enter

 
 

-           modalSelection = uiModal(context.container());
-           modalSelection.select('.modal').attr('class', 'modal-splash modal');
-           modalSelection.selectAll('.close').remove();
-           var startbutton = modalSelection.select('.content').attr('class', 'fillL').append('button').attr('class', 'modal-section huge-modal-button').on('click', function () {
-             modalSelection.remove();
-           });
-           startbutton.append('svg').attr('class', 'illustration').append('use').attr('xlink:href', '#iD-logo-walkthrough');
-           startbutton.append('h2').html(_t.html('intro.startediting.start'));
-           dispatch$1.call('startEditing');
-         }
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
+           saveSectionEnter.append('h4').attr('class', '.qa-save-header').html(_t.html('QA.keepRight.comment'));
+           saveSectionEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('QA.keepRight.comment_placeholder')).attr('maxlength', 1000).property('value', function (d) {
+             return d.newComment || d.comment;
+           }).call(utilNoAuto).on('input', changeInput).on('blur', changeInput); // update

 
 

-         chapter.enter = function () {
-           showHelp();
-         };
+           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);

 
 

-         chapter.exit = function () {
-           modalSelection.remove();
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
-         };
+           function changeInput() {
+             var input = select(this);
+             var val = input.property('value').trim();

 
 

-         return utilRebind(chapter, dispatch$1, 'on');
-       }
+             if (val === _qaItem.comment) {
+               val = undefined;
+             } // store the unsaved comment with the issue itself

 
 

-       var chapterUi = {
-         welcome: uiIntroWelcome,
-         navigation: uiIntroNavigation,
-         point: uiIntroPoint,
-         area: uiIntroArea,
-         line: uiIntroLine,
-         building: uiIntroBuilding,
-         startEditing: uiIntroStartEditing
-       };
-       var chapterFlow = ['welcome', 'navigation', 'point', 'area', 'line', 'building', 'startEditing'];
-       function uiIntro(context) {
-         var INTRO_IMAGERY = 'EsriWorldImageryClarity';
-         var _introGraph = {};

 
 

-         var _currChapter;
+             _qaItem = _qaItem.update({
+               newComment: val
+             });
+             var qaService = services.keepRight;

 
 

-         function intro(selection) {
-           _mainFileFetcher.get('intro_graph').then(function (dataIntroGraph) {
-             // create entities for intro graph and localize names
-             for (var id in dataIntroGraph) {
-               if (!_introGraph[id]) {
-                 _introGraph[id] = osmEntity(localize(dataIntroGraph[id]));
-               }
+             if (qaService) {
+               qaService.replaceItem(_qaItem); // update keepright cache

              }
 
              }
 

-             selection.call(startIntro);
-           })["catch"](function () {
-             /* ignore */
-           });
+             saveSection.call(qaSaveButtons);
+           }

          }
 
          }
 

-         function startIntro(selection) {
-           context.enter(modeBrowse(context)); // Save current map state
+         function qaSaveButtons(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-           var osm = context.connection();
-           var history = context.history().toJSON();
-           var hash = window.location.hash;
-           var center = context.map().center();
-           var zoom = context.map().zoom();
-           var background = context.background().baseLayerSource();
-           var overlays = context.background().overlayLayerSources();
-           var opacity = context.container().selectAll('.main-map .layer-background').style('opacity');
-           var caches = osm && osm.caches();
-           var baseEntities = context.history().graph().base().entities; // Show sidebar and disable the sidebar resizing button
-           // (this needs to be before `context.inIntro(true)`)
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

-           context.ui().sidebar.expand();
-           context.container().selectAll('button.sidebar-toggle').classed('disabled', true); // Block saving
+           buttonSection.exit().remove(); // enter

 
 

-           context.inIntro(true); // Load semi-real data used in intro
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+           buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('QA.keepRight.save_comment'));
+           buttonEnter.append('button').attr('class', 'button close-button action');
+           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update

 
 

-           if (osm) {
-             osm.toggle(false).reset();
-           }
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.select('.comment-button') // select and propagate data
+           .attr('disabled', function (d) {
+             return d.newComment ? null : true;
+           }).on('click.comment', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-           context.history().reset();
-           context.history().merge(Object.values(coreGraph().load(_introGraph).entities));
-           context.history().checkpoint('initial'); // Setup imagery
+             var qaService = services.keepRight;

 
 

-           var imagery = context.background().findSource(INTRO_IMAGERY);
+             if (qaService) {
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }
+           });
+           buttonSection.select('.close-button') // select and propagate data
+           .html(function (d) {
+             var andComment = d.newComment ? '_comment' : '';
+             return _t.html("QA.keepRight.close".concat(andComment));
+           }).on('click.close', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-           if (imagery) {
-             context.background().baseLayerSource(imagery);
-           } else {
-             context.background().bing();
-           }
+             var qaService = services.keepRight;

 
 

-           overlays.forEach(function (d) {
-             return context.background().toggleOverlayLayer(d);
-           }); // Setup data layers (only OSM)
+             if (qaService) {
+               d.newStatus = 'ignore_t'; // ignore temporarily (item fixed)

 
 

-           var layers = context.layers();
-           layers.all().forEach(function (item) {
-             // if the layer has the function `enabled`
-             if (typeof item.layer.enabled === 'function') {
-               item.layer.enabled(item.id === 'osm');
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });

              }
            });
              }
            });

-           context.container().selectAll('.main-map .layer-background').style('opacity', 1);
-           var curtain = uiCurtain(context.container().node());
-           selection.call(curtain); // Store that the user started the walkthrough..
+           buttonSection.select('.ignore-button') // select and propagate data
+           .html(function (d) {
+             var andComment = d.newComment ? '_comment' : '';
+             return _t.html("QA.keepRight.ignore".concat(andComment));
+           }).on('click.ignore', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-           corePreferences('walkthrough_started', 'yes'); // Restore previous walkthrough progress..
+             var qaService = services.keepRight;

 
 

-           var storedProgress = corePreferences('walkthrough_progress') || '';
-           var progress = storedProgress.split(';').filter(Boolean);
-           var chapters = chapterFlow.map(function (chapter, i) {
-             var s = chapterUi[chapter](context, curtain.reveal).on('done', function () {
-               buttons.filter(function (d) {
-                 return d.title === s.title;
-               }).classed('finished', true);
+             if (qaService) {
+               d.newStatus = 'ignore'; // ignore permanently (false positive)

 
 

-               if (i < chapterFlow.length - 1) {
-                 var next = chapterFlow[i + 1];
-                 context.container().select("button.chapter-".concat(next)).classed('next', true);
-               } // Store walkthrough progress..
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }
+           });
+         } // NOTE: Don't change method name until UI v3 is merged

 
 
 
 

-               progress.push(chapter);
-               corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';'));
-             });
-             return s;
+         keepRightEditor.error = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return keepRightEditor;
+         };
+
+         return utilRebind(keepRightEditor, dispatch, 'on');
+       }
+
+       function uiOsmoseDetails(context) {
+         var _qaItem;
+
+         function issueString(d, type) {
+           if (!d) return ''; // Issue strings are cached from Osmose API
+
+           var s = services.osmose.getStrings(d.itemType);
+           return type in s ? s[type] : '';
+         }
+
+         function osmoseDetails(selection) {
+           var details = selection.selectAll('.error-details').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);

            });
            });

-           chapters[chapters.length - 1].on('startEditing', function () {
-             // Store walkthrough progress..
-             progress.push('startEditing');
-             corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';')); // Store if walkthrough is completed..
+           details.exit().remove();
+           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // Description

 
 

-             var incomplete = utilArrayDifference(chapterFlow, progress);
+           if (issueString(_qaItem, 'detail')) {
+             var div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+             div.append('h4').html(_t.html('QA.keepRight.detail_description'));
+             div.append('p').attr('class', 'qa-details-description-text').html(function (d) {
+               return issueString(d, 'detail');
+             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
+           } // Elements (populated later as data is requested)

 
 

-             if (!incomplete.length) {
-               corePreferences('walkthrough_completed', 'yes');
-             }

 
 

-             curtain.remove();
-             navwrap.remove();
-             context.container().selectAll('.main-map .layer-background').style('opacity', opacity);
-             context.container().selectAll('button.sidebar-toggle').classed('disabled', false);
+           var detailsDiv = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+           var elemsDiv = detailsEnter.append('div').attr('class', 'qa-details-subsection'); // Suggested Fix (mustn't exist for every issue type)

 
 

-             if (osm) {
-               osm.toggle(true).reset().caches(caches);
-             }
+           if (issueString(_qaItem, 'fix')) {
+             var _div = detailsEnter.append('div').attr('class', 'qa-details-subsection');

 
 

-             context.history().reset().merge(Object.values(baseEntities));
-             context.background().baseLayerSource(background);
-             overlays.forEach(function (d) {
-               return context.background().toggleOverlayLayer(d);
-             });
+             _div.append('h4').html(_t.html('QA.osmose.fix_title'));

 
 

-             if (history) {
-               context.history().fromJSON(history, false);
-             }
+             _div.append('p').html(function (d) {
+               return issueString(d, 'fix');
+             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
+           } // Common Pitfalls (mustn't exist for every issue type)

 
 

-             context.map().centerZoom(center, zoom);
-             window.location.replace(hash);
-             context.inIntro(false);
-           });
-           var navwrap = selection.append('div').attr('class', 'intro-nav-wrap fillD');
-           navwrap.append('svg').attr('class', 'intro-nav-wrap-logo').append('use').attr('xlink:href', '#iD-logo-walkthrough');
-           var buttonwrap = navwrap.append('div').attr('class', 'joined').selectAll('button.chapter');
-           var buttons = buttonwrap.data(chapters).enter().append('button').attr('class', function (d, i) {
-             return "chapter chapter-".concat(chapterFlow[i]);
-           }).on('click', enterChapter);
-           buttons.append('span').html(function (d) {
-             return _t.html(d.title);
-           });
-           buttons.append('span').attr('class', 'status').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward', 'inline'));
-           enterChapter(null, chapters[0]);

 
 

-           function enterChapter(d3_event, newChapter) {
-             if (_currChapter) {
-               _currChapter.exit();
-             }
+           if (issueString(_qaItem, 'trap')) {
+             var _div2 = detailsEnter.append('div').attr('class', 'qa-details-subsection');

 
 

-             context.enter(modeBrowse(context));
-             _currChapter = newChapter;
+             _div2.append('h4').html(_t.html('QA.osmose.trap_title'));

 
 

-             _currChapter.enter();
+             _div2.append('p').html(function (d) {
+               return issueString(d, 'trap');
+             }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
+           } // Save current item to check if UI changed by time request resolves

 
 

-             buttons.classed('next', false).classed('active', function (d) {
-               return d.title === _currChapter.title;
-             });
-           }
-         }

 
 

-         return intro;
-       }
+           var thisItem = _qaItem;
+           services.osmose.loadIssueDetail(_qaItem).then(function (d) {
+             // No details to add if there are no associated issue elements
+             if (!d.elems || d.elems.length === 0) return; // Do nothing if UI has moved on by the time this resolves
+
+             if (context.selectedErrorID() !== thisItem.id && context.container().selectAll(".qaItem.osmose.hover.itemId-".concat(thisItem.id)).empty()) return; // Things like keys and values are dynamically added to a subtitle string
+
+             if (d.detail) {
+               detailsDiv.append('h4').html(_t.html('QA.osmose.detail_title'));
+               detailsDiv.append('p').html(function (d) {
+                 return d.detail;
+               }).selectAll('a').attr('rel', 'noopener').attr('target', '_blank');
+             } // Create list of linked issue elements
+
+
+             elemsDiv.append('h4').html(_t.html('QA.osmose.elems_title'));
+             elemsDiv.append('ul').selectAll('li').data(d.elems).enter().append('li').append('a').attr('href', '#').attr('class', 'error_entity_link').html(function (d) {
+               return d;
+             }).each(function () {
+               var link = select(this);
+               var entityID = this.textContent;
+               var entity = context.hasEntity(entityID); // Add click handler

 
 

-       function uiIssuesInfo(context) {
-         var warningsItem = {
-           id: 'warnings',
-           count: 0,
-           iconID: 'iD-icon-alert',
-           descriptionID: 'issues.warnings_and_errors'
-         };
-         var resolvedItem = {
-           id: 'resolved',
-           count: 0,
-           iconID: 'iD-icon-apply',
-           descriptionID: 'issues.user_resolved_issues'
-         };
+               link.on('mouseenter', function () {
+                 utilHighlightEntities([entityID], true, context);
+               }).on('mouseleave', function () {
+                 utilHighlightEntities([entityID], false, context);
+               }).on('click', function (d3_event) {
+                 d3_event.preventDefault();
+                 utilHighlightEntities([entityID], false, context);
+                 var osmlayer = context.layers().layer('osm');

 
 

-         function update(selection) {
-           var shownItems = [];
-           var liveIssues = context.validator().getIssues({
-             what: corePreferences('validate-what') || 'edited',
-             where: corePreferences('validate-where') || 'all'
-           });
+                 if (!osmlayer.enabled()) {
+                   osmlayer.enabled(true);
+                 }

 
 

-           if (liveIssues.length) {
-             warningsItem.count = liveIssues.length;
-             shownItems.push(warningsItem);
-           }
+                 context.map().centerZoom(d.loc, 20);

 
 

-           if (corePreferences('validate-what') === 'all') {
-             var resolvedIssues = context.validator().getResolvedIssues();
+                 if (entity) {
+                   context.enter(modeSelect(context, [entityID]));
+                 } else {
+                   context.loadEntity(entityID, function (err, result) {
+                     if (err) return;
+                     var entity = result.data.find(function (e) {
+                       return e.id === entityID;
+                     });
+                     if (entity) context.enter(modeSelect(context, [entityID]));
+                   });
+                 }
+               }); // Replace with friendly name if possible
+               // (The entity may not yet be loaded into the graph)

 
 

-             if (resolvedIssues.length) {
-               resolvedItem.count = resolvedIssues.length;
-               shownItems.push(resolvedItem);
-             }
-           }
+               if (entity) {
+                 var name = utilDisplayName(entity); // try to use common name

 
 

-           var chips = selection.selectAll('.chip').data(shownItems, function (d) {
-             return d.id;
-           });
-           chips.exit().remove();
-           var enter = chips.enter().append('a').attr('class', function (d) {
-             return 'chip ' + d.id + '-count';
-           }).attr('href', '#').each(function (d) {
-             var chipSelection = select(this);
-             var tooltipBehavior = uiTooltip().placement('top').title(_t.html(d.descriptionID));
-             chipSelection.call(tooltipBehavior).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               tooltipBehavior.hide(select(this)); // open the Issues pane
+                 if (!name) {
+                   var preset = _mainPresetIndex.match(entity, context.graph());
+                   name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
+                 }

 
 

-               context.ui().togglePanes(context.container().select('.map-panes .issues-pane'));
-             });
-             chipSelection.call(svgIcon('#' + d.iconID));
-           });
-           enter.append('span').attr('class', 'count');
-           enter.merge(chips).selectAll('span.count').html(function (d) {
-             return d.count.toString();
+                 if (name) {
+                   this.innerText = name;
+                 }
+               }
+             }); // Don't hide entities related to this issue - #5880
+
+             context.features().forceVisible(d.elems);
+             context.map().pan([0, 0]); // trigger a redraw
+           })["catch"](function (err) {
+             console.log(err); // eslint-disable-line no-console

            });
          }
 
            });
          }
 

-         return function (selection) {
-           update(selection);
-           context.validator().on('validated.infobox', function () {
-             update(selection);
-           });
+         osmoseDetails.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseDetails;

          };
          };

-       }

 
 

-       function uiMapInMap(context) {
-         function mapInMap(selection) {
-           var backgroundLayer = rendererTileLayer(context);
-           var overlayLayers = {};
-           var projection = geoRawMercator();
-           var dataLayer = svgData(projection, context).showLabels(false);
-           var debugLayer = svgDebug(projection, context);
-           var zoom = d3_zoom().scaleExtent([geoZoomToScale(0.5), geoZoomToScale(24)]).on('start', zoomStarted).on('zoom', zoomed).on('end', zoomEnded);
-           var wrap = select(null);
-           var tiles = select(null);
-           var viewport = select(null);
-           var _isTransformed = false;
-           var _isHidden = true;
-           var _skipEvents = false;
-           var _gesture = null;
-           var _zDiff = 6; // by default, minimap renders at (main zoom - 6)
+         return osmoseDetails;
+       }

 
 

-           var _dMini; // dimensions of minimap
+       function uiOsmoseHeader() {
+         var _qaItem;

 
 

+         function issueTitle(d) {
+           var unknown = _t('inspector.unknown');
+           if (!d) return unknown; // Issue titles supplied by Osmose

 
 

-           var _cMini; // center pixel of minimap
+           var s = services.osmose.getStrings(d.itemType);
+           return 'title' in s ? s.title : unknown;
+         }

 
 

+         function osmoseHeader(selection) {
+           var header = selection.selectAll('.qa-header').data(_qaItem ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           });
+           header.exit().remove();
+           var headerEnter = header.enter().append('div').attr('class', 'qa-header');
+           var svgEnter = headerEnter.append('div').attr('class', 'qa-header-icon').classed('new', function (d) {
+             return d.id < 0;
+           }).append('svg').attr('width', '20px').attr('height', '30px').attr('viewbox', '0 0 20 30').attr('class', function (d) {
+             return "preset-icon-28 qaItem ".concat(d.service, " itemId-").concat(d.id, " itemType-").concat(d.itemType);
+           });
+           svgEnter.append('polygon').attr('fill', function (d) {
+             return services.osmose.getColor(d.item);
+           }).attr('class', 'qaItem-fill').attr('points', '16,3 4,3 1,6 1,17 4,20 7,20 10,27 13,20 16,20 19,17.033 19,6');
+           svgEnter.append('use').attr('class', 'icon-annotation').attr('width', '13px').attr('height', '13px').attr('transform', 'translate(3.5, 5)').attr('xlink:href', function (d) {
+             var picon = d.icon;

 
 

-           var _tStart; // transform at start of gesture
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return "#".concat(picon).concat(isMaki ? '-11' : '');
+             }
+           });
+           headerEnter.append('div').attr('class', 'qa-header-label').html(issueTitle);
+         }

 
 

+         osmoseHeader.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseHeader;
+         };

 
 

-           var _tCurr; // transform at most recent event
+         return osmoseHeader;
+       }

 
 

+       function uiViewOnOsmose() {
+         var _qaItem;

 
 

-           var _timeoutID;
+         function viewOnOsmose(selection) {
+           var url;

 
 

-           function zoomStarted() {
-             if (_skipEvents) return;
-             _tStart = _tCurr = projection.transform();
-             _gesture = null;
+           if (services.osmose && _qaItem instanceof QAItem) {
+             url = services.osmose.itemURL(_qaItem);

            }
 
            }
 

-           function zoomed(d3_event) {
-             if (_skipEvents) return;
-             var x = d3_event.transform.x;
-             var y = d3_event.transform.y;
-             var k = d3_event.transform.k;
-             var isZooming = k !== _tStart.k;
-             var isPanning = x !== _tStart.x || y !== _tStart.y;
-
-             if (!isZooming && !isPanning) {
-               return; // no change
-             } // lock in either zooming or panning, don't allow both in minimap.
+           var link = selection.selectAll('.view-on-osmose').data(url ? [url] : []); // exit

 
 

+           link.exit().remove(); // enter

 
 

-             if (!_gesture) {
-               _gesture = isZooming ? 'zoom' : 'pan';
-             }
+           var linkEnter = link.enter().append('a').attr('class', 'view-on-osmose').attr('target', '_blank').attr('rel', 'noopener') // security measure
+           .attr('href', function (d) {
+             return d;
+           }).call(svgIcon('#iD-icon-out-link', 'inline'));
+           linkEnter.append('span').html(_t.html('inspector.view_on_osmose'));
+         }

 
 

-             var tMini = projection.transform();
-             var tX, tY, scale;
+         viewOnOsmose.what = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return viewOnOsmose;
+         };

 
 

-             if (_gesture === 'zoom') {
-               scale = k / tMini.k;
-               tX = (_cMini[0] / scale - _cMini[0]) * scale;
-               tY = (_cMini[1] / scale - _cMini[1]) * scale;
-             } else {
-               k = tMini.k;
-               scale = 1;
-               tX = x - tMini.x;
-               tY = y - tMini.y;
-             }
+         return viewOnOsmose;
+       }

 
 

-             utilSetTransform(tiles, tX, tY, scale);
-             utilSetTransform(viewport, 0, 0, scale);
-             _isTransformed = true;
-             _tCurr = identity$2.translate(x, y).scale(k);
-             var zMain = geoScaleToZoom(context.projection.scale());
-             var zMini = geoScaleToZoom(k);
-             _zDiff = zMain - zMini;
-             queueRedraw();
-           }
+       function uiOsmoseEditor(context) {
+         var dispatch = dispatch$8('change');
+         var qaDetails = uiOsmoseDetails(context);
+         var qaHeader = uiOsmoseHeader();

 
 

-           function zoomEnded() {
-             if (_skipEvents) return;
-             if (_gesture !== 'pan') return;
-             updateProjection();
-             _gesture = null;
-             context.map().center(projection.invert(_cMini)); // recenter main map..
-           }
+         var _qaItem;

 
 

-           function updateProjection() {
-             var loc = context.map().center();
-             var tMain = context.projection.transform();
-             var zMain = geoScaleToZoom(tMain.k);
-             var zMini = Math.max(zMain - _zDiff, 0.5);
-             var kMini = geoZoomToScale(zMini);
-             projection.translate([tMain.x, tMain.y]).scale(kMini);
-             var point = projection(loc);
-             var mouse = _gesture === 'pan' ? geoVecSubtract([_tCurr.x, _tCurr.y], [_tStart.x, _tStart.y]) : [0, 0];
-             var xMini = _cMini[0] - point[0] + tMain.x + mouse[0];
-             var yMini = _cMini[1] - point[1] + tMain.y + mouse[1];
-             projection.translate([xMini, yMini]).clipExtent([[0, 0], _dMini]);
-             _tCurr = projection.transform();
+         function osmoseEditor(selection) {
+           var header = selection.selectAll('.header').data([0]);
+           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             return context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('QA.osmose.title'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body);
+           var editor = body.selectAll('.qa-editor').data([0]);
+           editor.enter().append('div').attr('class', 'modal-section qa-editor').merge(editor).call(qaHeader.issue(_qaItem)).call(qaDetails.issue(_qaItem)).call(osmoseSaveSection);
+           var footer = selection.selectAll('.footer').data([0]);
+           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnOsmose().what(_qaItem));
+         }

 
 

-             if (_isTransformed) {
-               utilSetTransform(tiles, 0, 0);
-               utilSetTransform(viewport, 0, 0);
-               _isTransformed = false;
-             }
+         function osmoseSaveSection(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-             zoom.scaleExtent([geoZoomToScale(0.5), geoZoomToScale(zMain - 3)]);
-             _skipEvents = true;
-             wrap.call(zoom.transform, _tCurr);
-             _skipEvents = false;
-           }
+           var isShown = _qaItem && isSelected;
+           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           }); // exit

 
 

-           function redraw() {
-             clearTimeout(_timeoutID);
-             if (_isHidden) return;
-             updateProjection();
-             var zMini = geoScaleToZoom(projection.scale()); // setup tile container
+           saveSection.exit().remove(); // enter

 
 

-             tiles = wrap.selectAll('.map-in-map-tiles').data([0]);
-             tiles = tiles.enter().append('div').attr('class', 'map-in-map-tiles').merge(tiles); // redraw background
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf'); // update

 
 

-             backgroundLayer.source(context.background().baseLayerSource()).projection(projection).dimensions(_dMini);
-             var background = tiles.selectAll('.map-in-map-background').data([0]);
-             background.enter().append('div').attr('class', 'map-in-map-background').merge(background).call(backgroundLayer); // redraw overlay
+           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+         }

 
 

-             var overlaySources = context.background().overlayLayerSources();
-             var activeOverlayLayers = [];
+         function qaSaveButtons(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();

 
 

-             for (var i = 0; i < overlaySources.length; i++) {
-               if (overlaySources[i].validZoom(zMini)) {
-                 if (!overlayLayers[i]) overlayLayers[i] = rendererTileLayer(context);
-                 activeOverlayLayers.push(overlayLayers[i].source(overlaySources[i]).projection(projection).dimensions(_dMini));
-               }
-             }
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

-             var overlay = tiles.selectAll('.map-in-map-overlay').data([0]);
-             overlay = overlay.enter().append('div').attr('class', 'map-in-map-overlay').merge(overlay);
-             var overlays = overlay.selectAll('div').data(activeOverlayLayers, function (d) {
-               return d.source().name();
-             });
-             overlays.exit().remove();
-             overlays = overlays.enter().append('div').merge(overlays).each(function (layer) {
-               select(this).call(layer);
-             });
-             var dataLayers = tiles.selectAll('.map-in-map-data').data([0]);
-             dataLayers.exit().remove();
-             dataLayers = dataLayers.enter().append('svg').attr('class', 'map-in-map-data').merge(dataLayers).call(dataLayer).call(debugLayer); // redraw viewport bounding box
+           buttonSection.exit().remove(); // enter

 
 

-             if (_gesture !== 'pan') {
-               var getPath = d3_geoPath(projection);
-               var bbox = {
-                 type: 'Polygon',
-                 coordinates: [context.map().extent().polygon()]
-               };
-               viewport = wrap.selectAll('.map-in-map-viewport').data([0]);
-               viewport = viewport.enter().append('svg').attr('class', 'map-in-map-viewport').merge(viewport);
-               var path = viewport.selectAll('.map-in-map-bbox').data([bbox]);
-               path.enter().append('path').attr('class', 'map-in-map-bbox').merge(path).attr('d', getPath).classed('thick', function (d) {
-                 return getPath.area(d) < 30;
-               });
-             }
-           }
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+           buttonEnter.append('button').attr('class', 'button close-button action');
+           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update

 
 

-           function queueRedraw() {
-             clearTimeout(_timeoutID);
-             _timeoutID = setTimeout(function () {
-               redraw();
-             }, 750);
-           }
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.select('.close-button').html(_t.html('QA.keepRight.close')).on('click.close', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-           function toggle(d3_event) {
-             if (d3_event) d3_event.preventDefault();
-             _isHidden = !_isHidden;
-             context.container().select('.minimap-toggle-item').classed('active', !_isHidden).select('input').property('checked', !_isHidden);
+             var qaService = services.osmose;

 
 

-             if (_isHidden) {
-               wrap.style('display', 'block').style('opacity', '1').transition().duration(200).style('opacity', '0').on('end', function () {
-                 selection.selectAll('.map-in-map').style('display', 'none');
-               });
-             } else {
-               wrap.style('display', 'block').style('opacity', '0').transition().duration(200).style('opacity', '1').on('end', function () {
-                 redraw();
+             if (qaService) {
+               d.newStatus = 'done';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);

                });
              }
                });
              }

-           }
-
-           uiMapInMap.toggle = toggle;
-           wrap = selection.selectAll('.map-in-map').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'map-in-map').style('display', _isHidden ? 'none' : 'block').call(zoom).on('dblclick.zoom', null).merge(wrap); // reflow warning: Hardcode dimensions - currently can't resize it anyway..
-
-           _dMini = [200, 150]; //utilGetDimensions(wrap);
-
-           _cMini = geoVecScale(_dMini, 0.5);
-           context.map().on('drawn.map-in-map', function (drawn) {
-             if (drawn.full === true) {
-               redraw();
-             }

            });
            });

-           redraw();
-           context.keybinding().on(_t('background.minimap.key'), toggle);
-         }
+           buttonSection.select('.ignore-button').html(_t.html('QA.keepRight.ignore')).on('click.ignore', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641

 
 

-         return mapInMap;
-       }
+             var qaService = services.osmose;

 
 

-       function uiNotice(context) {
-         return function (selection) {
-           var div = selection.append('div').attr('class', 'notice');
-           var button = div.append('button').attr('class', 'zoom-to notice fillD').on('click', function () {
-             context.map().zoomEase(context.minEditableZoom());
-           }).on('wheel', function (d3_event) {
-             // let wheel events pass through #4482
-             var e2 = new WheelEvent(d3_event.type, d3_event);
-             context.surface().node().dispatchEvent(e2);
+             if (qaService) {
+               d.newStatus = 'false';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }

            });
            });

-           button.call(svgIcon('#iD-icon-plus', 'pre-text')).append('span').attr('class', 'label').html(_t.html('zoom_in_edit'));
+         } // NOTE: Don't change method name until UI v3 is merged

 
 

-           function disableTooHigh() {
-             var canEdit = context.map().zoom() >= context.minEditableZoom();
-             div.style('display', canEdit ? 'none' : 'block');
-           }

 
 

-           context.map().on('move.notice', debounce(disableTooHigh, 500));
-           disableTooHigh();
+         osmoseEditor.error = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseEditor;

          };
          };

+
+         return utilRebind(osmoseEditor, dispatch, 'on');

        }
 
        }
 

-       function uiPhotoviewer(context) {
-         var dispatch$1 = dispatch('resize');
+       function uiNoteComments() {
+         var _note;

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+         function noteComments(selection) {
+           if (_note.isNew()) return; // don't draw .comments-container

 
 

-         function photoviewer(selection) {
-           selection.append('button').attr('class', 'thumb-hide').on('click', function () {
-             if (services.streetside) {
-               services.streetside.hideViewer(context);
-             }
+           var comments = selection.selectAll('.comments-container').data([0]);
+           comments = comments.enter().append('div').attr('class', 'comments-container').merge(comments);
+           var commentEnter = comments.selectAll('.comment').data(_note.comments).enter().append('div').attr('class', 'comment');
+           commentEnter.append('div').attr('class', function (d) {
+             return 'comment-avatar user-' + d.uid;
+           }).call(svgIcon('#iD-icon-avatar', 'comment-avatar-icon'));
+           var mainEnter = commentEnter.append('div').attr('class', 'comment-main');
+           var metadataEnter = mainEnter.append('div').attr('class', 'comment-metadata');
+           metadataEnter.append('div').attr('class', 'comment-author').each(function (d) {
+             var selection = select(this);
+             var osm = services.osm;

 
 

-             if (services.mapillary) {
-               services.mapillary.hideViewer(context);
+             if (osm && d.user) {
+               selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.user)).attr('target', '_blank');

              }
 
              }
 

-             if (services.openstreetcam) {
-               services.openstreetcam.hideViewer(context);
-             }
-           }).append('div').call(svgIcon('#iD-icon-close'));
+             selection.html(function (d) {
+               return d.user || _t.html('note.anonymous');
+             });
+           });
+           metadataEnter.append('div').attr('class', 'comment-date').html(function (d) {
+             return _t('note.status.' + d.action, {
+               when: localeDateString(d.date)
+             });
+           });
+           mainEnter.append('div').attr('class', 'comment-text').html(function (d) {
+             return d.html;
+           }).selectAll('a').attr('rel', 'noopener nofollow').attr('target', '_blank');
+           comments.call(replaceAvatars);
+         }

 
 

-           function preventDefault(d3_event) {
-             d3_event.preventDefault();
-           }
+         function replaceAvatars(selection) {
+           var showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
+           var osm = services.osm;
+           if (showThirdPartyIcons !== 'true' || !osm) return;
+           var uids = {}; // gather uids in the comment thread

 
 

-           selection.append('button').attr('class', 'resize-handle-xy').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch$1, {
-             resizeOnX: true,
-             resizeOnY: true
-           }));
-           selection.append('button').attr('class', 'resize-handle-x').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch$1, {
-             resizeOnX: true
-           }));
-           selection.append('button').attr('class', 'resize-handle-y').on('touchstart touchdown touchend', preventDefault).on(_pointerPrefix + 'down', buildResizeListener(selection, 'resize', dispatch$1, {
-             resizeOnY: true
-           }));
+           _note.comments.forEach(function (d) {
+             if (d.uid) uids[d.uid] = true;
+           });

 
 

-           function buildResizeListener(target, eventName, dispatch, options) {
-             var resizeOnX = !!options.resizeOnX;
-             var resizeOnY = !!options.resizeOnY;
-             var minHeight = options.minHeight || 240;
-             var minWidth = options.minWidth || 320;
-             var pointerId;
-             var startX;
-             var startY;
-             var startWidth;
-             var startHeight;
+           Object.keys(uids).forEach(function (uid) {
+             osm.loadUser(uid, function (err, user) {
+               if (!user || !user.image_url) return;
+               selection.selectAll('.comment-avatar.user-' + uid).html('').append('img').attr('class', 'icon comment-avatar-icon').attr('src', user.image_url).attr('alt', user.display_name);
+             });
+           });
+         }

 
 

-             function startResize(d3_event) {
-               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               var mapSize = context.map().dimensions();
+         function localeDateString(s) {
+           if (!s) return null;
+           var options = {
+             day: 'numeric',
+             month: 'short',
+             year: 'numeric'
+           };
+           s = s.replace(/-/g, '/'); // fix browser-specific Date() issues

 
 

-               if (resizeOnX) {
-                 var maxWidth = mapSize[0];
-                 var newWidth = clamp(startWidth + d3_event.clientX - startX, minWidth, maxWidth);
-                 target.style('width', newWidth + 'px');
-               }
+           var d = new Date(s);
+           if (isNaN(d.getTime())) return null;
+           return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+         }

 
 

-               if (resizeOnY) {
-                 var maxHeight = mapSize[1] - 90; // preserve space at top/bottom of map
+         noteComments.note = function (val) {
+           if (!arguments.length) return _note;
+           _note = val;
+           return noteComments;
+         };
+
+         return noteComments;
+       }

 
 

-                 var newHeight = clamp(startHeight + startY - d3_event.clientY, minHeight, maxHeight);
-                 target.style('height', newHeight + 'px');
-               }
+       function uiNoteHeader() {
+         var _note;

 
 

-               dispatch.call(eventName, target, utilGetDimensions(target, true));
+         function noteHeader(selection) {
+           var header = selection.selectAll('.note-header').data(_note ? [_note] : [], function (d) {
+             return d.status + d.id;
+           });
+           header.exit().remove();
+           var headerEnter = header.enter().append('div').attr('class', 'note-header');
+           var iconEnter = headerEnter.append('div').attr('class', function (d) {
+             return 'note-header-icon ' + d.status;
+           }).classed('new', function (d) {
+             return d.id < 0;
+           });
+           iconEnter.append('div').attr('class', 'preset-icon-28').call(svgIcon('#iD-icon-note', 'note-fill'));
+           iconEnter.each(function (d) {
+             var statusIcon;
+
+             if (d.id < 0) {
+               statusIcon = '#iD-icon-plus';
+             } else if (d.status === 'open') {
+               statusIcon = '#iD-icon-close';
+             } else {
+               statusIcon = '#iD-icon-apply';

              }
 
              }
 

-             function clamp(num, min, max) {
-               return Math.max(min, Math.min(num, max));
+             iconEnter.append('div').attr('class', 'note-icon-annotation').call(svgIcon(statusIcon, 'icon-annotation'));
+           });
+           headerEnter.append('div').attr('class', 'note-header-label').html(function (d) {
+             if (_note.isNew()) {
+               return _t('note.new');

              }
 
              }
 

-             function stopResize(d3_event) {
-               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-               d3_event.preventDefault();
-               d3_event.stopPropagation(); // remove all the listeners we added
+             return _t('note.note') + ' ' + d.id + ' ' + (d.status === 'closed' ? _t('note.closed') : '');
+           });
+         }

 
 

-               select(window).on('.' + eventName, null);
-             }
+         noteHeader.note = function (val) {
+           if (!arguments.length) return _note;
+           _note = val;
+           return noteHeader;
+         };

 
 

-             return function initResize(d3_event) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               pointerId = d3_event.pointerId || 'mouse';
-               startX = d3_event.clientX;
-               startY = d3_event.clientY;
-               var targetRect = target.node().getBoundingClientRect();
-               startWidth = targetRect.width;
-               startHeight = targetRect.height;
-               select(window).on(_pointerPrefix + 'move.' + eventName, startResize, false).on(_pointerPrefix + 'up.' + eventName, stopResize, false);
+         return noteHeader;
+       }

 
 

-               if (_pointerPrefix === 'pointer') {
-                 select(window).on('pointercancel.' + eventName, stopResize, false);
-               }
-             };
+       function uiNoteReport() {
+         var _note;
+
+         function noteReport(selection) {
+           var url;
+
+           if (services.osm && _note instanceof osmNote && !_note.isNew()) {
+             url = services.osm.noteReportURL(_note);

            }
            }

-         }

 
 

-         photoviewer.onMapResize = function () {
-           var photoviewer = context.container().select('.photoviewer');
-           var content = context.container().select('.main-content');
-           var mapDimensions = utilGetDimensions(content, true); // shrink photo viewer if it is too big
-           // (-90 preserves space at top and bottom of map used by menus)
+           var link = selection.selectAll('.note-report').data(url ? [url] : []); // exit

 
 

-           var photoDimensions = utilGetDimensions(photoviewer, true);
+           link.exit().remove(); // enter

 
 

-           if (photoDimensions[0] > mapDimensions[0] || photoDimensions[1] > mapDimensions[1] - 90) {
-             var setPhotoDimensions = [Math.min(photoDimensions[0], mapDimensions[0]), Math.min(photoDimensions[1], mapDimensions[1] - 90)];
-             photoviewer.style('width', setPhotoDimensions[0] + 'px').style('height', setPhotoDimensions[1] + 'px');
-             dispatch$1.call('resize', photoviewer, setPhotoDimensions);
-           }
+           var linkEnter = link.enter().append('a').attr('class', 'note-report').attr('target', '_blank').attr('href', function (d) {
+             return d;
+           }).call(svgIcon('#iD-icon-out-link', 'inline'));
+           linkEnter.append('span').html(_t.html('note.report'));
+         }
+
+         noteReport.note = function (val) {
+           if (!arguments.length) return _note;
+           _note = val;
+           return noteReport;

          };
 
          };
 

-         return utilRebind(photoviewer, dispatch$1, 'on');
+         return noteReport;

        }
 
        }
 

-       function uiRestore(context) {
-         return function (selection) {
-           if (!context.history().hasRestorableChanges()) return;
-           var modalSelection = uiModal(selection, true);
-           modalSelection.select('.modal').attr('class', 'modal fillL');
-           var introModal = modalSelection.select('.content');
-           introModal.append('div').attr('class', 'modal-section').append('h3').html(_t.html('restore.heading'));
-           introModal.append('div').attr('class', 'modal-section').append('p').html(_t.html('restore.description'));
-           var buttonWrap = introModal.append('div').attr('class', 'modal-actions');
-           var restore = buttonWrap.append('button').attr('class', 'restore').on('click', function () {
-             context.history().restore();
-             modalSelection.remove();
-           });
-           restore.append('svg').attr('class', 'logo logo-restore').append('use').attr('xlink:href', '#iD-logo-restore');
-           restore.append('div').html(_t.html('restore.restore'));
-           var reset = buttonWrap.append('button').attr('class', 'reset').on('click', function () {
-             context.history().clearSaved();
-             modalSelection.remove();
-           });
-           reset.append('svg').attr('class', 'logo logo-reset').append('use').attr('xlink:href', '#iD-logo-reset');
-           reset.append('div').html(_t.html('restore.reset'));
-           restore.node().focus();
-         };
-       }
+       function uiNoteEditor(context) {
+         var dispatch = dispatch$8('change');
+         var noteComments = uiNoteComments();
+         var noteHeader = uiNoteHeader(); // var formFields = uiFormFields(context);

 
 

-       function uiScale(context) {
-         var projection = context.projection,
-             isImperial = !_mainLocalizer.usesMetric(),
-             maxLength = 180,
-             tickHeight = 8;
+         var _note;

 
 

-         function scaleDefs(loc1, loc2) {
-           var lat = (loc2[1] + loc1[1]) / 2,
-               conversion = isImperial ? 3.28084 : 1,
-               dist = geoLonToMeters(loc2[0] - loc1[0], lat) * conversion,
-               scale = {
-             dist: 0,
-             px: 0,
-             text: ''
-           },
-               buckets,
-               i,
-               val,
-               dLon;
+         var _newNote; // var _fieldsArr;

 
 

-           if (isImperial) {
-             buckets = [5280000, 528000, 52800, 5280, 500, 50, 5, 1];
-           } else {
-             buckets = [5000000, 500000, 50000, 5000, 500, 50, 5, 1];
-           } // determine a user-friendly endpoint for the scale

 
 

+         function noteEditor(selection) {
+           var header = selection.selectAll('.header').data([0]);
+           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').on('click', function () {
+             context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('note.title'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body);
+           var editor = body.selectAll('.note-editor').data([0]);
+           editor.enter().append('div').attr('class', 'modal-section note-editor').merge(editor).call(noteHeader.note(_note)).call(noteComments.note(_note)).call(noteSaveSection);
+           var footer = selection.selectAll('.footer').data([0]);
+           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnOSM(context).what(_note)).call(uiNoteReport().note(_note)); // rerender the note editor on any auth change

 
 

-           for (i = 0; i < buckets.length; i++) {
-             val = buckets[i];
+           var osm = services.osm;

 
 

-             if (dist >= val) {
-               scale.dist = Math.floor(dist / val) * val;
-               break;
-             } else {
-               scale.dist = +dist.toFixed(2);
-             }
+           if (osm) {
+             osm.on('change.note-save', function () {
+               selection.call(noteEditor);
+             });

            }
            }

-
-           dLon = geoMetersToLon(scale.dist / conversion, lat);
-           scale.px = Math.round(projection([loc1[0] + dLon, loc1[1]])[0]);
-           scale.text = displayLength(scale.dist / conversion, isImperial);
-           return scale;

          }
 
          }
 

-         function update(selection) {
-           // choose loc1, loc2 along bottom of viewport (near where the scale will be drawn)
-           var dims = context.map().dimensions(),
-               loc1 = projection.invert([0, dims[1]]),
-               loc2 = projection.invert([maxLength, dims[1]]),
-               scale = scaleDefs(loc1, loc2);
-           selection.select('.scale-path').attr('d', 'M0.5,0.5v' + tickHeight + 'h' + scale.px + 'v-' + tickHeight);
-           selection.select('.scale-text').style(_mainLocalizer.textDirection() === 'ltr' ? 'left' : 'right', scale.px + 16 + 'px').html(scale.text);
-         }
+         function noteSaveSection(selection) {
+           var isSelected = _note && _note.id === context.selectedNoteID();

 
 

-         return function (selection) {
-           function switchUnits() {
-             isImperial = !isImperial;
-             selection.call(update);
-           }
+           var noteSave = selection.selectAll('.note-save').data(isSelected ? [_note] : [], function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

-           var scalegroup = selection.append('svg').attr('class', 'scale').on('click', switchUnits).append('g').attr('transform', 'translate(10,11)');
-           scalegroup.append('path').attr('class', 'scale-path');
-           selection.append('div').attr('class', 'scale-text');
-           selection.call(update);
-           context.map().on('move.scale', function () {
-             update(selection);
+           noteSave.exit().remove(); // enter
+
+           var noteSaveEnter = noteSave.enter().append('div').attr('class', 'note-save save-section cf'); // // if new note, show categories to pick from
+           // if (_note.isNew()) {
+           //     var presets = presetManager;
+           //     // NOTE: this key isn't a age and therefore there is no documentation (yet)
+           //     _fieldsArr = [
+           //         uiField(context, presets.field('category'), null, { show: true, revert: false }),
+           //     ];
+           //     _fieldsArr.forEach(function(field) {
+           //         field
+           //             .on('change', changeCategory);
+           //     });
+           //     noteSaveEnter
+           //         .append('div')
+           //         .attr('class', 'note-category')
+           //         .call(formFields.fieldsArr(_fieldsArr));
+           // }
+           // function changeCategory() {
+           //     // NOTE: perhaps there is a better way to get value
+           //     var val = context.container().select('input[name=\'category\']:checked').property('__data__') || undefined;
+           //     // store the unsaved category with the note itself
+           //     _note = _note.update({ newCategory: val });
+           //     var osm = services.osm;
+           //     if (osm) {
+           //         osm.replaceNote(_note);  // update note cache
+           //     }
+           //     noteSave
+           //         .call(noteSaveButtons);
+           // }
+
+           noteSaveEnter.append('h4').attr('class', '.note-save-header').html(function () {
+             return _note.isNew() ? _t('note.newDescription') : _t('note.newComment');

            });
            });

-         };
-       }
+           var commentTextarea = noteSaveEnter.append('textarea').attr('class', 'new-comment-input').attr('placeholder', _t('note.inputPlaceholder')).attr('maxlength', 1000).property('value', function (d) {
+             return d.newComment;
+           }).call(utilNoAuto).on('keydown.note-input', keydown).on('input.note-input', changeInput).on('blur.note-input', changeInput);

 
 

-       function uiShortcuts(context) {
-         var detected = utilDetect();
-         var _activeTab = 0;
+           if (!commentTextarea.empty() && _newNote) {
+             // autofocus the comment field for new notes
+             commentTextarea.node().focus();
+           } // update

 
 

-         var _modalSelection;

 
 

-         var _selection = select(null);
+           noteSave = noteSaveEnter.merge(noteSave).call(userDetails).call(noteSaveButtons); // fast submit if user presses cmd+enter

 
 

-         function shortcutsModal(_modalSelection) {
-           _modalSelection.select('.modal').classed('modal-shortcuts', true);
+           function keydown(d3_event) {
+             if (!(d3_event.keyCode === 13 && // ↩ Return
+             d3_event.metaKey)) return;
+             var osm = services.osm;
+             if (!osm) return;
+             var hasAuth = osm.authenticated();
+             if (!hasAuth) return;
+             if (!_note.newComment) return;
+             d3_event.preventDefault();
+             select(this).on('keydown.note-input', null); // focus on button and submit

 
 

-           var content = _modalSelection.select('.content');
+             window.setTimeout(function () {
+               if (_note.isNew()) {
+                 noteSave.selectAll('.save-button').node().focus();
+                 clickSave();
+               } else {
+                 noteSave.selectAll('.comment-button').node().focus();
+                 clickComment();
+               }
+             }, 10);
+           }

 
 

-           content.append('div').attr('class', 'modal-section').append('h3').html(_t.html('shortcuts.title'));
-           _mainFileFetcher.get('shortcuts').then(function (data) {
-             content.call(render, data);
-           })["catch"](function () {
-             /* ignore */
-           });
+           function changeInput() {
+             var input = select(this);
+             var val = input.property('value').trim() || undefined; // store the unsaved comment with the note itself
+
+             _note = _note.update({
+               newComment: val
+             });
+             var osm = services.osm;
+
+             if (osm) {
+               osm.replaceNote(_note); // update note cache
+             }
+
+             noteSave.call(noteSaveButtons);
+           }

          }
 
          }
 

-         function render(selection, dataShortcuts) {
-           var wrapper = selection.selectAll('.wrapper').data([0]);
-           var wrapperEnter = wrapper.enter().append('div').attr('class', 'wrapper modal-section');
-           var tabsBar = wrapperEnter.append('div').attr('class', 'tabs-bar');
-           var shortcutsList = wrapperEnter.append('div').attr('class', 'shortcuts-list');
-           wrapper = wrapper.merge(wrapperEnter);
-           var tabs = tabsBar.selectAll('.tab').data(dataShortcuts);
-           var tabsEnter = tabs.enter().append('a').attr('class', 'tab').attr('href', '#').on('click', function (d3_event) {
+         function userDetails(selection) {
+           var detailSection = selection.selectAll('.detail-section').data([0]);
+           detailSection = detailSection.enter().append('div').attr('class', 'detail-section').merge(detailSection);
+           var osm = services.osm;
+           if (!osm) return; // Add warning if user is not logged in
+
+           var hasAuth = osm.authenticated();
+           var authWarning = detailSection.selectAll('.auth-warning').data(hasAuth ? [] : [0]);
+           authWarning.exit().transition().duration(200).style('opacity', 0).remove();
+           var authEnter = authWarning.enter().insert('div', '.tag-reference-body').attr('class', 'field-warning auth-warning').style('opacity', 0);
+           authEnter.call(svgIcon('#iD-icon-alert', 'inline'));
+           authEnter.append('span').html(_t.html('note.login'));
+           authEnter.append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('login')).on('click.note-login', function (d3_event) {

              d3_event.preventDefault();
              d3_event.preventDefault();

-             var i = tabs.nodes().indexOf(this);
-             _activeTab = i;
-             render(selection, dataShortcuts);
+             osm.authenticate();

            });
            });

-           tabsEnter.append('span').html(function (d) {
-             return _t.html(d.text);
-           }); // Update
+           authEnter.transition().duration(200).style('opacity', 1);
+           var prose = detailSection.selectAll('.note-save-prose').data(hasAuth ? [0] : []);
+           prose.exit().remove();
+           prose = prose.enter().append('p').attr('class', 'note-save-prose').html(_t.html('note.upload_explanation')).merge(prose);
+           osm.userDetails(function (err, user) {
+             if (err) return;
+             var userLink = select(document.createElement('div'));

 
 

-           wrapper.selectAll('.tab').classed('active', function (d, i) {
-             return i === _activeTab;
-           });
-           var shortcuts = shortcutsList.selectAll('.shortcut-tab').data(dataShortcuts);
-           var shortcutsEnter = shortcuts.enter().append('div').attr('class', function (d) {
-             return 'shortcut-tab shortcut-tab-' + d.tab;
-           });
-           var columnsEnter = shortcutsEnter.selectAll('.shortcut-column').data(function (d) {
-             return d.columns;
-           }).enter().append('table').attr('class', 'shortcut-column');
-           var rowsEnter = columnsEnter.selectAll('.shortcut-row').data(function (d) {
-             return d.rows;
-           }).enter().append('tr').attr('class', 'shortcut-row');
-           var sectionRows = rowsEnter.filter(function (d) {
-             return !d.shortcuts;
-           });
-           sectionRows.append('td');
-           sectionRows.append('td').attr('class', 'shortcut-section').append('h3').html(function (d) {
-             return _t.html(d.text);
-           });
-           var shortcutRows = rowsEnter.filter(function (d) {
-             return d.shortcuts;
-           });
-           var shortcutKeys = shortcutRows.append('td').attr('class', 'shortcut-keys');
-           var modifierKeys = shortcutKeys.filter(function (d) {
-             return d.modifiers;
-           });
-           modifierKeys.selectAll('kbd.modifier').data(function (d) {
-             if (detected.os === 'win' && d.text === 'shortcuts.editing.commands.redo') {
-               return ['⌘'];
-             } else if (detected.os !== 'mac' && d.text === 'shortcuts.browsing.display_options.fullscreen') {
-               return [];
-             } else {
-               return d.modifiers;
+             if (user.image_url) {
+               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');

              }
              }

-           }).enter().each(function () {
-             var selection = select(this);
-             selection.append('kbd').attr('class', 'modifier').html(function (d) {
-               return uiCmd.display(d);
-             });
-             selection.append('span').html('+');
+
+             userLink.append('a').attr('class', 'user-info').html(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
+             prose.html(_t.html('note.upload_explanation_with_user', {
+               user: userLink.html()
+             }));

            });
            });

-           shortcutKeys.selectAll('kbd.shortcut').data(function (d) {
-             var arr = d.shortcuts;
+         }

 
 

-             if (detected.os === 'win' && d.text === 'shortcuts.editing.commands.redo') {
-               arr = ['Y'];
-             } else if (detected.os !== 'mac' && d.text === 'shortcuts.browsing.display_options.fullscreen') {
-               arr = ['F11'];
-             } // replace translations
+         function noteSaveButtons(selection) {
+           var osm = services.osm;
+           var hasAuth = osm && osm.authenticated();

 
 

+           var isSelected = _note && _note.id === context.selectedNoteID();

 
 

-             arr = arr.map(function (s) {
-               return uiCmd.display(s.indexOf('.') !== -1 ? _t(s) : s);
-             });
-             return utilArrayUniq(arr).map(function (s) {
-               return {
-                 shortcut: s,
-                 separator: d.separator,
-                 suffix: d.suffix
-               };
-             });
-           }).enter().each(function (d, i, nodes) {
-             var selection = select(this);
-             var click = d.shortcut.toLowerCase().match(/(.*).click/);
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_note] : [], function (d) {
+             return d.status + d.id;
+           }); // exit

 
 

-             if (click && click[1]) {
-               // replace "left_click", "right_click" with mouse icon
-               selection.call(svgIcon('#iD-walkthrough-mouse-' + click[1], 'operation'));
-             } else if (d.shortcut.toLowerCase() === 'long-press') {
-               selection.call(svgIcon('#iD-walkthrough-longpress', 'longpress operation'));
-             } else if (d.shortcut.toLowerCase() === 'tap') {
-               selection.call(svgIcon('#iD-walkthrough-tap', 'tap operation'));
-             } else {
-               selection.append('kbd').attr('class', 'shortcut').html(function (d) {
-                 return d.shortcut;
-               });
-             }
+           buttonSection.exit().remove(); // enter

 
 

-             if (i < nodes.length - 1) {
-               selection.append('span').html(d.separator || "\xA0" + _t.html('shortcuts.or') + "\xA0");
-             } else if (i === nodes.length - 1 && d.suffix) {
-               selection.append('span').html(d.suffix);
-             }
-           });
-           shortcutKeys.filter(function (d) {
-             return d.gesture;
-           }).each(function () {
-             var selection = select(this);
-             selection.append('span').html('+');
-             selection.append('span').attr('class', 'gesture').html(function (d) {
-               return _t.html(d.gesture);
-             });
-           });
-           shortcutRows.append('td').attr('class', 'shortcut-desc').html(function (d) {
-             return d.text ? _t.html(d.text) : "\xA0";
-           }); // Update
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');

 
 

-           wrapper.selectAll('.shortcut-tab').style('display', function (d, i) {
-             return i === _activeTab ? 'flex' : 'none';
-           });
+           if (_note.isNew()) {
+             buttonEnter.append('button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
+             buttonEnter.append('button').attr('class', 'button save-button action').html(_t.html('note.save'));
+           } else {
+             buttonEnter.append('button').attr('class', 'button status-button action');
+             buttonEnter.append('button').attr('class', 'button comment-button action').html(_t.html('note.comment'));
+           } // update
+
+
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.select('.cancel-button') // select and propagate data
+           .on('click.cancel', clickCancel);
+           buttonSection.select('.save-button') // select and propagate data
+           .attr('disabled', isSaveDisabled).on('click.save', clickSave);
+           buttonSection.select('.status-button') // select and propagate data
+           .attr('disabled', hasAuth ? null : true).html(function (d) {
+             var action = d.status === 'open' ? 'close' : 'open';
+             var andComment = d.newComment ? '_comment' : '';
+             return _t('note.' + action + andComment);
+           }).on('click.status', clickStatus);
+           buttonSection.select('.comment-button') // select and propagate data
+           .attr('disabled', isSaveDisabled).on('click.comment', clickComment);
+
+           function isSaveDisabled(d) {
+             return hasAuth && d.status === 'open' && d.newComment ? null : true;
+           }

          }
 
          }
 

-         return function (selection, show) {
-           _selection = selection;
+         function clickCancel(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button - #4641

 
 

-           if (show) {
-             _modalSelection = uiModal(selection);
+           var osm = services.osm;

 
 

-             _modalSelection.call(shortcutsModal);
-           } else {
-             context.keybinding().on([_t('shortcuts.toggle.key'), '?'], function () {
-               if (context.container().selectAll('.modal-shortcuts').size()) {
-                 // already showing
-                 if (_modalSelection) {
-                   _modalSelection.close();
+           if (osm) {
+             osm.removeNote(d);
+           }

 
 

-                   _modalSelection = null;
-                 }
-               } else {
-                 _modalSelection = uiModal(_selection);
+           context.enter(modeBrowse(context));
+           dispatch.call('change');
+         }

 
 

-                 _modalSelection.call(shortcutsModal);
-               }
+         function clickSave(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button - #4641
+
+           var osm = services.osm;
+
+           if (osm) {
+             osm.postNoteCreate(d, function (err, note) {
+               dispatch.call('change', note);

              });
            }
              });
            }

-         };
-       }
-
-       var pair_1 = pair;
+         }

 
 

-       function search(input, dims) {
-         if (!dims) dims = 'NSEW';
-         if (typeof input !== 'string') return null;
-         input = input.toUpperCase();
-         var regex = /^[\s\,]*([NSEW])?\s*([\-|\—|\―]?[0-9.]+)[°º˚]?\s*(?:([0-9.]+)['’′‘]\s*)?(?:([0-9.]+)(?:''|"|”|″)\s*)?([NSEW])?/;
-         var m = input.match(regex);
-         if (!m) return null; // no match
+         function clickStatus(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button - #4641

 
 

-         var matched = m[0]; // extract dimension.. m[1] = leading, m[5] = trailing
+           var osm = services.osm;

 
 

-         var dim;
+           if (osm) {
+             var setStatus = d.status === 'open' ? 'closed' : 'open';
+             osm.postNoteUpdate(d, setStatus, function (err, note) {
+               dispatch.call('change', note);
+             });
+           }
+         }

 
 

-         if (m[1] && m[5]) {
-           // if matched both..
-           dim = m[1]; // keep leading
+         function clickComment(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button - #4641

 
 

-           matched = matched.slice(0, -1); // remove trailing dimension from match
-         } else {
-           dim = m[1] || m[5];
-         } // if unrecognized dimension
+           var osm = services.osm;

 
 

+           if (osm) {
+             osm.postNoteUpdate(d, d.status, function (err, note) {
+               dispatch.call('change', note);
+             });
+           }
+         }

 
 

-         if (dim && dims.indexOf(dim) === -1) return null; // extract DMS
+         noteEditor.note = function (val) {
+           if (!arguments.length) return _note;
+           _note = val;
+           return noteEditor;
+         };

 
 

-         var deg = m[2] ? parseFloat(m[2]) : 0;
-         var min = m[3] ? parseFloat(m[3]) / 60 : 0;
-         var sec = m[4] ? parseFloat(m[4]) / 3600 : 0;
-         var sign = deg < 0 ? -1 : 1;
-         if (dim === 'S' || dim === 'W') sign *= -1;
-         return {
-           val: (Math.abs(deg) + min + sec) * sign,
-           dim: dim,
-           matched: matched,
-           remain: input.slice(matched.length)
+         noteEditor.newNote = function (val) {
+           if (!arguments.length) return _newNote;
+           _newNote = val;
+           return noteEditor;

          };
          };

+
+         return utilRebind(noteEditor, dispatch, 'on');

        }
 
        }
 

-       function pair(input, dims) {
-         input = input.trim();
-         var one = search(input, dims);
-         if (!one) return null;
-         input = one.remain.trim();
-         var two = search(input, dims);
-         if (!two || two.remain) return null;
+       function uiSidebar(context) {
+         var inspector = uiInspector(context);
+         var dataEditor = uiDataEditor(context);
+         var noteEditor = uiNoteEditor(context);
+         var improveOsmEditor = uiImproveOsmEditor(context);
+         var keepRightEditor = uiKeepRightEditor(context);
+         var osmoseEditor = uiOsmoseEditor(context);

 
 

-         if (one.dim) {
-           return swapdim(one.val, two.val, one.dim);
-         } else {
-           return [one.val, two.val];
-         }
-       }
+         var _current;

 
 

-       function swapdim(a, b, dim) {
-         if (dim === 'N' || dim === 'S') return [a, b];
-         if (dim === 'W' || dim === 'E') return [b, a];
-       }
+         var _wasData = false;
+         var _wasNote = false;
+         var _wasQaItem = false; // use pointer events on supported platforms; fallback to mouse events

 
 

-       function uiFeatureList(context) {
-         var _geocodeResults;
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-         function featureList(selection) {
-           var header = selection.append('div').attr('class', 'header fillL');
-           header.append('h3').html(_t.html('inspector.feature_list'));
-           var searchWrap = selection.append('div').attr('class', 'search-header');
-           searchWrap.call(svgIcon('#iD-icon-search', 'pre-text'));
-           var search = searchWrap.append('input').attr('placeholder', _t('inspector.search')).attr('type', 'search').call(utilNoAuto).on('keypress', keypress).on('keydown', keydown).on('input', inputevent);
-           var listWrap = selection.append('div').attr('class', 'inspector-body');
-           var list = listWrap.append('div').attr('class', 'feature-list');
-           context.on('exit.feature-list', clearSearch);
-           context.map().on('drawn.feature-list', mapDrawn);
-           context.keybinding().on(uiCmd('⌘F'), focusSearch);
+         function sidebar(selection) {
+           var container = context.container();
+           var minWidth = 240;
+           var sidebarWidth;
+           var containerWidth;
+           var dragOffset; // Set the initial width constraints

 
 

-           function focusSearch(d3_event) {
-             var mode = context.mode() && context.mode().id;
-             if (mode !== 'browse') return;
-             d3_event.preventDefault();
-             search.node().focus();
-           }
+           selection.style('min-width', minWidth + 'px').style('max-width', '400px').style('width', '33.3333%');
+           var resizer = selection.append('div').attr('class', 'sidebar-resizer').on(_pointerPrefix + 'down.sidebar-resizer', pointerdown);
+           var downPointerId, lastClientX, containerLocGetter;

 
 

-           function keydown(d3_event) {
-             if (d3_event.keyCode === 27) {
-               // escape
-               search.node().blur();
-             }
-           }
+           function pointerdown(d3_event) {
+             if (downPointerId) return;
+             if ('button' in d3_event && d3_event.button !== 0) return;
+             downPointerId = d3_event.pointerId || 'mouse';
+             lastClientX = d3_event.clientX;
+             containerLocGetter = utilFastMouse(container.node()); // offset from edge of sidebar-resizer

 
 

-           function keypress(d3_event) {
-             var q = search.property('value'),
-                 items = list.selectAll('.feature-list-item');
+             dragOffset = utilFastMouse(resizer.node())(d3_event)[0] - 1;
+             sidebarWidth = selection.node().getBoundingClientRect().width;
+             containerWidth = container.node().getBoundingClientRect().width;
+             var widthPct = sidebarWidth / containerWidth * 100;
+             selection.style('width', widthPct + '%') // lock in current width
+             .style('max-width', '85%'); // but allow larger widths

 
 

-             if (d3_event.keyCode === 13 && // ↩ Return
-             q.length && items.size()) {
-               click(items.datum());
-             }
+             resizer.classed('dragging', true);
+             select(window).on('touchmove.sidebar-resizer', function (d3_event) {
+               // disable page scrolling while resizing on touch input
+               d3_event.preventDefault();
+             }, {
+               passive: false
+             }).on(_pointerPrefix + 'move.sidebar-resizer', pointermove).on(_pointerPrefix + 'up.sidebar-resizer pointercancel.sidebar-resizer', pointerup);

            }
 
            }
 

-           function inputevent() {
-             _geocodeResults = undefined;
-             drawList();
-           }
+           function pointermove(d3_event) {
+             if (downPointerId !== (d3_event.pointerId || 'mouse')) return;
+             d3_event.preventDefault();
+             var dx = d3_event.clientX - lastClientX;
+             lastClientX = d3_event.clientX;
+             var isRTL = _mainLocalizer.textDirection() === 'rtl';
+             var scaleX = isRTL ? 0 : 1;
+             var xMarginProperty = isRTL ? 'margin-right' : 'margin-left';
+             var x = containerLocGetter(d3_event)[0] - dragOffset;
+             sidebarWidth = isRTL ? containerWidth - x : x;
+             var isCollapsed = selection.classed('collapsed');
+             var shouldCollapse = sidebarWidth < minWidth;
+             selection.classed('collapsed', shouldCollapse);

 
 

-           function clearSearch() {
-             search.property('value', '');
-             drawList();
-           }
+             if (shouldCollapse) {
+               if (!isCollapsed) {
+                 selection.style(xMarginProperty, '-400px').style('width', '400px');
+                 context.ui().onResize([(sidebarWidth - dx) * scaleX, 0]);
+               }
+             } else {
+               var widthPct = sidebarWidth / containerWidth * 100;
+               selection.style(xMarginProperty, null).style('width', widthPct + '%');

 
 

-           function mapDrawn(e) {
-             if (e.full) {
-               drawList();
+               if (isCollapsed) {
+                 context.ui().onResize([-sidebarWidth * scaleX, 0]);
+               } else {
+                 context.ui().onResize([-dx * scaleX, 0]);
+               }

              }
            }
 
              }
            }
 

-           function features() {
-             var result = [];
-             var graph = context.graph();
-             var visibleCenter = context.map().extent().center();
-             var q = search.property('value').toLowerCase();
-             if (!q) return result;
-             var locationMatch = pair_1(q.toUpperCase()) || q.match(/^(-?\d+\.?\d*)\s+(-?\d+\.?\d*)$/);
-
-             if (locationMatch) {
-               var loc = [parseFloat(locationMatch[0]), parseFloat(locationMatch[1])];
-               result.push({
-                 id: -1,
-                 geometry: 'point',
-                 type: _t('inspector.location'),
-                 name: dmsCoordinatePair([loc[1], loc[0]]),
-                 location: loc
-               });
-             } // A location search takes priority over an ID search
+           function pointerup(d3_event) {
+             if (downPointerId !== (d3_event.pointerId || 'mouse')) return;
+             downPointerId = null;
+             resizer.classed('dragging', false);
+             select(window).on('touchmove.sidebar-resizer', null).on(_pointerPrefix + 'move.sidebar-resizer', null).on(_pointerPrefix + 'up.sidebar-resizer pointercancel.sidebar-resizer', null);
+           }

 
 

+           var featureListWrap = selection.append('div').attr('class', 'feature-list-pane').call(uiFeatureList(context));
+           var inspectorWrap = selection.append('div').attr('class', 'inspector-hidden inspector-wrap');

 
 

-             var idMatch = !locationMatch && q.match(/(?:^|\W)(node|way|relation|[nwr])\W?0*([1-9]\d*)(?:\W|$)/i);
+           var hoverModeSelect = function hoverModeSelect(targets) {
+             context.container().selectAll('.feature-list-item button').classed('hover', false);

 
 

-             if (idMatch) {
-               var elemType = idMatch[1].charAt(0);
-               var elemId = idMatch[2];
-               result.push({
-                 id: elemType + elemId,
-                 geometry: elemType === 'n' ? 'point' : elemType === 'w' ? 'line' : 'relation',
-                 type: elemType === 'n' ? _t('inspector.node') : elemType === 'w' ? _t('inspector.way') : _t('inspector.relation'),
-                 name: elemId
+             if (context.selectedIDs().length > 1 && targets && targets.length) {
+               var elements = context.container().selectAll('.feature-list-item button').filter(function (node) {
+                 return targets.indexOf(node) !== -1;

                });
                });

-             }
-
-             var allEntities = graph.entities;
-             var localResults = [];

 
 

-             for (var id in allEntities) {
-               var entity = allEntities[id];
-               if (!entity) continue;
-               var name = utilDisplayName(entity) || '';
-               if (name.toLowerCase().indexOf(q) < 0) continue;
-               var matched = _mainPresetIndex.match(entity, graph);
-               var type = matched && matched.name() || utilDisplayType(entity.id);
-               var extent = entity.extent(graph);
-               var distance = extent ? geoSphericalDistance(visibleCenter, extent.center()) : 0;
-               localResults.push({
-                 id: entity.id,
-                 entity: entity,
-                 geometry: entity.geometry(graph),
-                 type: type,
-                 name: name,
-                 distance: distance
-               });
-               if (localResults.length > 100) break;
+               if (!elements.empty()) {
+                 elements.classed('hover', true);
+               }

              }
              }

+           };

 
 

-             localResults = localResults.sort(function byDistance(a, b) {
-               return a.distance - b.distance;
-             });
-             result = result.concat(localResults);
+           sidebar.hoverModeSelect = throttle(hoverModeSelect, 200);

 
 

-             (_geocodeResults || []).forEach(function (d) {
-               if (d.osm_type && d.osm_id) {
-                 // some results may be missing these - #1890
-                 // Make a temporary osmEntity so we can preset match
-                 // and better localize the search result - #4725
-                 var id = osmEntity.id.fromOSM(d.osm_type, d.osm_id);
-                 var tags = {};
-                 tags[d["class"]] = d.type;
-                 var attrs = {
-                   id: id,
-                   type: d.osm_type,
-                   tags: tags
-                 };
+           function hover(targets) {
+             var datum = targets && targets.length && targets[0];

 
 

-                 if (d.osm_type === 'way') {
-                   // for ways, add some fake closed nodes
-                   attrs.nodes = ['a', 'a']; // so that geometry area is possible
-                 }
+             if (datum && datum.__featurehash__) {
+               // hovering on data
+               _wasData = true;
+               sidebar.show(dataEditor.datum(datum));
+               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
+             } else if (datum instanceof osmNote) {
+               if (context.mode().id === 'drag-note') return;
+               _wasNote = true;
+               var osm = services.osm;

 
 

-                 var tempEntity = osmEntity(attrs);
-                 var tempGraph = coreGraph([tempEntity]);
-                 var matched = _mainPresetIndex.match(tempEntity, tempGraph);
-                 var type = matched && matched.name() || utilDisplayType(id);
-                 result.push({
-                   id: tempEntity.id,
-                   geometry: tempEntity.geometry(tempGraph),
-                   type: type,
-                   name: d.display_name,
-                   extent: new geoExtent([parseFloat(d.boundingbox[3]), parseFloat(d.boundingbox[0])], [parseFloat(d.boundingbox[2]), parseFloat(d.boundingbox[1])])
-                 });
+               if (osm) {
+                 datum = osm.getNote(datum.id); // marker may contain stale data - get latest

                }
                }

-             });
-
-             if (q.match(/^[0-9]+$/)) {
-               // if query is just a number, possibly an OSM ID without a prefix
-               result.push({
-                 id: 'n' + q,
-                 geometry: 'point',
-                 type: _t('inspector.node'),
-                 name: q
-               });
-               result.push({
-                 id: 'w' + q,
-                 geometry: 'line',
-                 type: _t('inspector.way'),
-                 name: q
-               });
-               result.push({
-                 id: 'r' + q,
-                 geometry: 'relation',
-                 type: _t('inspector.relation'),
-                 name: q
-               });
-             }
-
-             return result;
-           }

 
 

-           function drawList() {
-             var value = search.property('value');
-             var results = features();
-             list.classed('filtered', value.length);
-             var resultsIndicator = list.selectAll('.no-results-item').data([0]).enter().append('button').property('disabled', true).attr('class', 'no-results-item').call(svgIcon('#iD-icon-alert', 'pre-text'));
-             resultsIndicator.append('span').attr('class', 'entity-name');
-             list.selectAll('.no-results-item .entity-name').html(_t.html('geocoder.no_results_worldwide'));
+               sidebar.show(noteEditor.note(datum));
+               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
+             } else if (datum instanceof QAItem) {
+               _wasQaItem = true;
+               var errService = services[datum.service];

 
 

-             if (services.geocoder) {
-               list.selectAll('.geocode-item').data([0]).enter().append('button').attr('class', 'geocode-item secondary-action').on('click', geocoderSearch).append('div').attr('class', 'label').append('span').attr('class', 'entity-name').html(_t.html('geocoder.search'));
-             }
+               if (errService) {
+                 // marker may contain stale data - get latest
+                 datum = errService.getError(datum.id);
+               } // Currently only three possible services

 
 

-             list.selectAll('.no-results-item').style('display', value.length && !results.length ? 'block' : 'none');
-             list.selectAll('.geocode-item').style('display', value && _geocodeResults === undefined ? 'block' : 'none');
-             list.selectAll('.feature-list-item').data([-1]).remove();
-             var items = list.selectAll('.feature-list-item').data(results, function (d) {
-               return d.id;
-             });
-             var enter = items.enter().insert('button', '.geocode-item').attr('class', 'feature-list-item').on('mouseover', mouseover).on('mouseout', mouseout).on('click', click);
-             var label = enter.append('div').attr('class', 'label');
-             label.each(function (d) {
-               select(this).call(svgIcon('#iD-icon-' + d.geometry, 'pre-text'));
-             });
-             label.append('span').attr('class', 'entity-type').html(function (d) {
-               return d.type;
-             });
-             label.append('span').attr('class', 'entity-name').html(function (d) {
-               return d.name;
-             });
-             enter.style('opacity', 0).transition().style('opacity', 1);
-             items.order();
-             items.exit().remove();
-           }

 
 

-           function mouseover(d3_event, d) {
-             if (d.id === -1) return;
-             utilHighlightEntities([d.id], true, context);
-           }
+               var errEditor;

 
 

-           function mouseout(d3_event, d) {
-             if (d.id === -1) return;
-             utilHighlightEntities([d.id], false, context);
-           }
+               if (datum.service === 'keepRight') {
+                 errEditor = keepRightEditor;
+               } else if (datum.service === 'osmose') {
+                 errEditor = osmoseEditor;
+               } else {
+                 errEditor = improveOsmEditor;
+               }

 
 

-           function click(d3_event, d) {
-             d3_event.preventDefault();
+               context.container().selectAll('.qaItem.' + datum.service).classed('hover', function (d) {
+                 return d.id === datum.id;
+               });
+               sidebar.show(errEditor.error(datum));
+               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
+             } else if (!_current && datum instanceof osmEntity) {
+               featureListWrap.classed('inspector-hidden', true);
+               inspectorWrap.classed('inspector-hidden', false).classed('inspector-hover', true);

 
 

-             if (d.location) {
-               context.map().centerZoomEase([d.location[1], d.location[0]], 19);
-             } else if (d.entity) {
-               utilHighlightEntities([d.id], false, context);
-               context.enter(modeSelect(context, [d.entity.id]));
-               context.map().zoomToEase(d.entity);
-             } else {
-               // download, zoom to, and select the entity with the given ID
-               context.zoomToEntity(d.id);
+               if (!inspector.entityIDs() || !utilArrayIdentical(inspector.entityIDs(), [datum.id]) || inspector.state() !== 'hover') {
+                 inspector.state('hover').entityIDs([datum.id]).newFeature(false);
+                 inspectorWrap.call(inspector);
+               }
+             } else if (!_current) {
+               featureListWrap.classed('inspector-hidden', false);
+               inspectorWrap.classed('inspector-hidden', true);
+               inspector.state('hide');
+             } else if (_wasData || _wasNote || _wasQaItem) {
+               _wasNote = false;
+               _wasData = false;
+               _wasQaItem = false;
+               context.container().selectAll('.note').classed('hover', false);
+               context.container().selectAll('.qaItem').classed('hover', false);
+               sidebar.hide();

              }
            }
 
              }
            }
 

-           function geocoderSearch() {
-             services.geocoder.search(search.property('value'), function (err, resp) {
-               _geocodeResults = resp || [];
-               drawList();
-             });
-           }
-         }
+           sidebar.hover = throttle(hover, 200);

 
 

-         return featureList;
-       }
+           sidebar.intersects = function (extent) {
+             var rect = selection.node().getBoundingClientRect();
+             return extent.intersects([context.projection.invert([0, rect.height]), context.projection.invert([rect.width, 0])]);
+           };

 
 

-       function uiSectionEntityIssues(context) {
-         var _entityIDs = [];
-         var _issues = [];
+           sidebar.select = function (ids, newFeature) {
+             sidebar.hide();

 
 

-         var _activeIssueID;
+             if (ids && ids.length) {
+               var entity = ids.length === 1 && context.entity(ids[0]);

 
 

-         var section = uiSection('entity-issues', context).shouldDisplay(function () {
-           return _issues.length > 0;
-         }).label(function () {
-           return _t('inspector.title_count', {
-             title: _t.html('issues.list_title'),
-             count: _issues.length
-           });
-         }).disclosureContent(renderDisclosureContent);
-         context.validator().on('validated.entity_issues', function () {
-           // Refresh on validated events
-           reloadIssues();
-           section.reRender();
-         }).on('focusedIssue.entity_issues', function (issue) {
-           makeActiveIssue(issue.id);
-         });
+               if (entity && newFeature && selection.classed('collapsed')) {
+                 // uncollapse the sidebar
+                 var extent = entity.extent(context.graph());
+                 sidebar.expand(sidebar.intersects(extent));
+               }

 
 

-         function reloadIssues() {
-           _issues = context.validator().getSharedEntityIssues(_entityIDs, {
-             includeDisabledRules: true
-           });
-         }
+               featureListWrap.classed('inspector-hidden', true);
+               inspectorWrap.classed('inspector-hidden', false).classed('inspector-hover', false); // reload the UI even if the ids are the same since the entities
+               // themselves may have changed

 
 

-         function makeActiveIssue(issueID) {
-           _activeIssueID = issueID;
-           section.selection().selectAll('.issue-container').classed('active', function (d) {
-             return d.id === _activeIssueID;
-           });
-         }
+               inspector.state('select').entityIDs(ids).newFeature(newFeature);
+               inspectorWrap.call(inspector);
+             } else {
+               inspector.state('hide');
+             }
+           };

 
 

-         function renderDisclosureContent(selection) {
-           selection.classed('grouped-items-area', true);
-           _activeIssueID = _issues.length > 0 ? _issues[0].id : null;
-           var containers = selection.selectAll('.issue-container').data(_issues, function (d) {
-             return d.id;
-           }); // Exit
+           sidebar.showPresetList = function () {
+             inspector.showList();
+           };

 
 

-           containers.exit().remove(); // Enter
+           sidebar.show = function (component, element) {
+             featureListWrap.classed('inspector-hidden', true);
+             inspectorWrap.classed('inspector-hidden', true);
+             if (_current) _current.remove();
+             _current = selection.append('div').attr('class', 'sidebar-component').call(component, element);
+           };

 
 

-           var containersEnter = containers.enter().append('div').attr('class', 'issue-container');
-           var itemsEnter = containersEnter.append('div').attr('class', function (d) {
-             return 'issue severity-' + d.severity;
-           }).on('mouseover.highlight', function (d3_event, d) {
-             // don't hover-highlight the selected entity
-             var ids = d.entityIds.filter(function (e) {
-               return _entityIDs.indexOf(e) === -1;
-             });
-             utilHighlightEntities(ids, true, context);
-           }).on('mouseout.highlight', function (d3_event, d) {
-             var ids = d.entityIds.filter(function (e) {
-               return _entityIDs.indexOf(e) === -1;
-             });
-             utilHighlightEntities(ids, false, context);
-           });
-           var labelsEnter = itemsEnter.append('div').attr('class', 'issue-label');
-           var textEnter = labelsEnter.append('button').attr('class', 'issue-text').on('click', function (d3_event, d) {
-             makeActiveIssue(d.id); // expand only the clicked item
+           sidebar.hide = function () {
+             featureListWrap.classed('inspector-hidden', false);
+             inspectorWrap.classed('inspector-hidden', true);
+             if (_current) _current.remove();
+             _current = null;
+           };

 
 

-             var extent = d.extent(context.graph());
+           sidebar.expand = function (moveMap) {
+             if (selection.classed('collapsed')) {
+               sidebar.toggle(moveMap);
+             }
+           };

 
 

-             if (extent) {
-               var setZoom = Math.max(context.map().zoom(), 19);
-               context.map().unobscuredCenterZoomEase(extent.center(), setZoom);
+           sidebar.collapse = function (moveMap) {
+             if (!selection.classed('collapsed')) {
+               sidebar.toggle(moveMap);

              }
              }

-           });
-           textEnter.each(function (d) {
-             var iconName = '#iD-icon-' + (d.severity === 'warning' ? 'alert' : 'error');
-             select(this).call(svgIcon(iconName, 'issue-icon'));
-           });
-           textEnter.append('span').attr('class', 'issue-message');
-           var infoButton = labelsEnter.append('button').attr('class', 'issue-info-button').attr('title', _t('icons.information')).call(svgIcon('#iD-icon-inspect'));
-           infoButton.on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             this.blur(); // avoid keeping focus on the button - #4641
+           };
+
+           sidebar.toggle = function (moveMap) {
+             // Don't allow sidebar to toggle when the user is in the walkthrough.
+             if (context.inIntro()) return;
+             var isCollapsed = selection.classed('collapsed');
+             var isCollapsing = !isCollapsed;
+             var isRTL = _mainLocalizer.textDirection() === 'rtl';
+             var scaleX = isRTL ? 0 : 1;
+             var xMarginProperty = isRTL ? 'margin-right' : 'margin-left';
+             sidebarWidth = selection.node().getBoundingClientRect().width; // switch from % to px

 
 

-             var container = select(this.parentNode.parentNode.parentNode);
-             var info = container.selectAll('.issue-info');
-             var isExpanded = info.classed('expanded');
+             selection.style('width', sidebarWidth + 'px');
+             var startMargin, endMargin, lastMargin;

 
 

-             if (isExpanded) {
-               info.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
-                 info.classed('expanded', false);
-               });
-             } else {
-               info.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1').on('end', function () {
-                 info.style('max-height', null);
-               });
-             }
-           });
-           itemsEnter.append('ul').attr('class', 'issue-fix-list');
-           containersEnter.append('div').attr('class', 'issue-info').style('max-height', '0').style('opacity', '0').each(function (d) {
-             if (typeof d.reference === 'function') {
-               select(this).call(d.reference);
+             if (isCollapsing) {
+               startMargin = lastMargin = 0;
+               endMargin = -sidebarWidth;

              } else {
              } else {

-               select(this).html(_t.html('inspector.no_documentation_key'));
+               startMargin = lastMargin = -sidebarWidth;
+               endMargin = 0;

              }
              }

-           }); // Update
-
-           containers = containers.merge(containersEnter).classed('active', function (d) {
-             return d.id === _activeIssueID;
-           });
-           containers.selectAll('.issue-message').html(function (d) {
-             return d.message(context);
-           }); // fixes

 
 

-           var fixLists = containers.selectAll('.issue-fix-list');
-           var fixes = fixLists.selectAll('.issue-fix-item').data(function (d) {
-             return d.fixes ? d.fixes(context) : [];
-           }, function (fix) {
-             return fix.id;
-           });
-           fixes.exit().remove();
-           var fixesEnter = fixes.enter().append('li').attr('class', 'issue-fix-item');
-           var buttons = fixesEnter.append('button').on('click', function (d3_event, d) {
-             // not all fixes are actionable
-             if (select(this).attr('disabled') || !d.onClick) return; // Don't run another fix for this issue within a second of running one
-             // (Necessary for "Select a feature type" fix. Most fixes should only ever run once)
+             if (!isCollapsing) {
+               // unhide the sidebar's content before it transitions onscreen
+               selection.classed('collapsed', isCollapsing);
+             }

 
 

-             if (d.issue.dateLastRanFix && new Date() - d.issue.dateLastRanFix < 1000) return;
-             d.issue.dateLastRanFix = new Date(); // remove hover-highlighting
+             selection.transition().style(xMarginProperty, endMargin + 'px').tween('panner', function () {
+               var i = d3_interpolateNumber(startMargin, endMargin);
+               return function (t) {
+                 var dx = lastMargin - Math.round(i(t));
+                 lastMargin = lastMargin - dx;
+                 context.ui().onResize(moveMap ? undefined : [dx * scaleX, 0]);
+               };
+             }).on('end', function () {
+               if (isCollapsing) {
+                 // hide the sidebar's content after it transitions offscreen
+                 selection.classed('collapsed', isCollapsing);
+               } // switch back from px to %

 
 

-             utilHighlightEntities(d.issue.entityIds.concat(d.entityIds), false, context);
-             new Promise(function (resolve, reject) {
-               d.onClick(context, resolve, reject);

 
 

-               if (d.onClick.length <= 1) {
-                 // if the fix doesn't take any completion parameters then consider it resolved
-                 resolve();
+               if (!isCollapsing) {
+                 var containerWidth = container.node().getBoundingClientRect().width;
+                 var widthPct = sidebarWidth / containerWidth * 100;
+                 selection.style(xMarginProperty, null).style('width', widthPct + '%');

                }
                }

-             }).then(function () {
-               // revalidate whenever the fix has finished running successfully
-               context.validator().validate();

              });
              });

-           }).on('mouseover.highlight', function (d3_event, d) {
-             utilHighlightEntities(d.entityIds, true, context);
-           }).on('mouseout.highlight', function (d3_event, d) {
-             utilHighlightEntities(d.entityIds, false, context);
-           });
-           buttons.each(function (d) {
-             var iconName = d.icon || 'iD-icon-wrench';
+           }; // toggle the sidebar collapse when double-clicking the resizer

 
 

-             if (iconName.startsWith('maki')) {
-               iconName += '-15';
-             }

 
 

-             select(this).call(svgIcon('#' + iconName, 'fix-icon'));
-           });
-           buttons.append('span').attr('class', 'fix-message').html(function (d) {
-             return d.title;
-           });
-           fixesEnter.merge(fixes).selectAll('button').classed('actionable', function (d) {
-             return d.onClick;
-           }).attr('disabled', function (d) {
-             return d.onClick ? null : 'true';
-           }).attr('title', function (d) {
-             if (d.disabledReason) {
-               return d.disabledReason;
+           resizer.on('dblclick', function (d3_event) {
+             d3_event.preventDefault();
+
+             if (d3_event.sourceEvent) {
+               d3_event.sourceEvent.preventDefault();

              }
 
              }
 

-             return null;
+             sidebar.toggle();
+           }); // ensure hover sidebar is closed when zooming out beyond editable zoom
+
+           context.map().on('crossEditableZoom.sidebar', function (within) {
+             if (!within && !selection.select('.inspector-hover').empty()) {
+               hover([]);
+             }

            });
          }
 
            });
          }
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
+         sidebar.showPresetList = function () {};

 
 

-           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
-             _entityIDs = val;
-             _activeIssueID = null;
-             reloadIssues();
-           }
+         sidebar.hover = function () {};

 
 

-           return section;
-         };
+         sidebar.hover.cancel = function () {};

 
 

-         return section;
-       }
+         sidebar.intersects = function () {};

 
 

-       function uiPresetIcon() {
-         var _preset;
+         sidebar.select = function () {};

 
 

-         var _geometry;
+         sidebar.show = function () {};

 
 

-         var _sizeClass = 'medium';
+         sidebar.hide = function () {};

 
 

-         function isSmall() {
-           return _sizeClass === 'small';
-         }
+         sidebar.expand = function () {};

 
 

-         function presetIcon(selection) {
-           selection.each(render);
-         }
+         sidebar.collapse = function () {};

 
 

-         function getIcon(p, geom) {
-           if (isSmall() && p.isFallback && p.isFallback()) return 'iD-icon-' + p.id;else if (p.icon) return p.icon;else if (geom === 'line') return 'iD-other-line';else if (geom === 'vertex') return p.isFallback() ? '' : 'temaki-vertex';else if (isSmall() && geom === 'point') return '';else return 'maki-marker-stroked';
-         }
+         sidebar.toggle = function () {};

 
 

-         function renderPointBorder(container, drawPoint) {
-           var pointBorder = container.selectAll('.preset-icon-point-border').data(drawPoint ? [0] : []);
-           pointBorder.exit().remove();
-           var pointBorderEnter = pointBorder.enter();
-           var w = 40;
-           var h = 40;
-           pointBorderEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-point-border').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h)).append('path').attr('transform', 'translate(11.5, 8)').attr('d', 'M 17,8 C 17,13 11,21 8.5,23.5 C 6,21 0,13 0,8 C 0,4 4,-0.5 8.5,-0.5 C 13,-0.5 17,4 17,8 z');
-           pointBorder = pointBorderEnter.merge(pointBorder);
-         }
+         return sidebar;
+       }

 
 

-         function renderCircleFill(container, drawVertex) {
-           var vertexFill = container.selectAll('.preset-icon-fill-vertex').data(drawVertex ? [0] : []);
-           vertexFill.exit().remove();
-           var vertexFillEnter = vertexFill.enter();
-           var w = 60;
-           var h = 60;
-           var d = 40;
-           vertexFillEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-fill-vertex').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h)).append('circle').attr('cx', w / 2).attr('cy', h / 2).attr('r', d / 2);
-           vertexFill = vertexFillEnter.merge(vertexFill);
+       function uiSourceSwitch(context) {
+         var keys;
+
+         function click(d3_event) {
+           d3_event.preventDefault();
+           var osm = context.connection();
+           if (!osm) return;
+           if (context.inIntro()) return;
+           if (context.history().hasChanges() && !window.confirm(_t('source_switch.lose_changes'))) return;
+           var isLive = select(this).classed('live');
+           isLive = !isLive;
+           context.enter(modeBrowse(context));
+           context.history().clearSaved(); // remove saved history
+
+           context.flush(); // remove stored data
+
+           select(this).html(isLive ? _t.html('source_switch.live') : _t.html('source_switch.dev')).classed('live', isLive).classed('chip', isLive);
+           osm["switch"](isLive ? keys[0] : keys[1]); // switch connection (warning: dispatches 'change' event)

          }
 
          }
 

-         function renderSquareFill(container, drawArea, tagClasses) {
-           var fill = container.selectAll('.preset-icon-fill-area').data(drawArea ? [0] : []);
-           fill.exit().remove();
-           var fillEnter = fill.enter();
-           var d = isSmall() ? 40 : 60;
-           var w = d;
-           var h = d;
-           var l = d * 2 / 3;
-           var c1 = (w - l) / 2;
-           var c2 = c1 + l;
-           fillEnter = fillEnter.append('svg').attr('class', 'preset-icon-fill preset-icon-fill-area').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
-           ['fill', 'stroke'].forEach(function (klass) {
-             fillEnter.append('path').attr('d', "M".concat(c1, " ").concat(c1, " L").concat(c1, " ").concat(c2, " L").concat(c2, " ").concat(c2, " L").concat(c2, " ").concat(c1, " Z")).attr('class', "line area ".concat(klass));
-           });
-           var rVertex = 2.5;
-           [[c1, c1], [c1, c2], [c2, c2], [c2, c1]].forEach(function (point) {
-             fillEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', rVertex);
-           });
+         var sourceSwitch = function sourceSwitch(selection) {
+           selection.append('a').attr('href', '#').html(_t.html('source_switch.live')).attr('class', 'live chip').on('click', click);
+         };

 
 

-           if (!isSmall()) {
-             var rMidpoint = 1.25;
-             [[c1, w / 2], [c2, w / 2], [h / 2, c1], [h / 2, c2]].forEach(function (point) {
-               fillEnter.append('circle').attr('class', 'midpoint').attr('cx', point[0]).attr('cy', point[1]).attr('r', rMidpoint);
+         sourceSwitch.keys = function (_) {
+           if (!arguments.length) return keys;
+           keys = _;
+           return sourceSwitch;
+         };
+
+         return sourceSwitch;
+       }
+
+       function uiSpinner(context) {
+         var osm = context.connection();
+         return function (selection) {
+           var img = selection.append('img').attr('src', context.imagePath('loader-black.gif')).style('opacity', 0);
+
+           if (osm) {
+             osm.on('loading.spinner', function () {
+               img.transition().style('opacity', 1);
+             }).on('loaded.spinner', function () {
+               img.transition().style('opacity', 0);

              });
            }
              });
            }

+         };
+       }

 
 

-           fill = fillEnter.merge(fill);
-           fill.selectAll('path.stroke').attr('class', "area stroke ".concat(tagClasses));
-           fill.selectAll('path.fill').attr('class', "area fill ".concat(tagClasses));
-         }
+       function uiSplash(context) {
+         return function (selection) {
+           // Exception - if there are restorable changes, skip this splash screen.
+           // This is because we currently only support one `uiModal` at a time
+           //  and we need to show them `uiRestore`` instead of this one.
+           if (context.history().hasRestorableChanges()) return; // If user has not seen this version of the privacy policy, show the splash again.

 
 

-         function renderLine(container, drawLine, tagClasses) {
-           var line = container.selectAll('.preset-icon-line').data(drawLine ? [0] : []);
-           line.exit().remove();
-           var lineEnter = line.enter();
-           var d = isSmall() ? 40 : 60; // draw the line parametrically
+           var updateMessage = '';
+           var sawPrivacyVersion = corePreferences('sawPrivacyVersion');
+           var showSplash = !corePreferences('sawSplash');

 
 

-           var w = d;
-           var h = d;
-           var y = Math.round(d * 0.72);
-           var l = Math.round(d * 0.6);
-           var r = 2.5;
-           var x1 = (w - l) / 2;
-           var x2 = x1 + l;
-           lineEnter = lineEnter.append('svg').attr('class', 'preset-icon-line').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
-           ['casing', 'stroke'].forEach(function (klass) {
-             lineEnter.append('path').attr('d', "M".concat(x1, " ").concat(y, " L").concat(x2, " ").concat(y)).attr('class', "line ".concat(klass));
-           });
-           [[x1 - 1, y], [x2 + 1, y]].forEach(function (point) {
-             lineEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', r);
-           });
-           line = lineEnter.merge(line);
-           line.selectAll('path.stroke').attr('class', "line stroke ".concat(tagClasses));
-           line.selectAll('path.casing').attr('class', "line casing ".concat(tagClasses));
-         }
+           if (sawPrivacyVersion !== context.privacyVersion) {
+             updateMessage = _t('splash.privacy_update');
+             showSplash = true;
+           }

 
 

-         function renderRoute(container, drawRoute, p) {
-           var route = container.selectAll('.preset-icon-route').data(drawRoute ? [0] : []);
-           route.exit().remove();
-           var routeEnter = route.enter();
-           var d = isSmall() ? 40 : 60; // draw the route parametrically
+           if (!showSplash) return;
+           corePreferences('sawSplash', true);
+           corePreferences('sawPrivacyVersion', context.privacyVersion); // fetch intro graph data now, while user is looking at the splash screen

 
 

-           var w = d;
-           var h = d;
-           var y1 = Math.round(d * 0.80);
-           var y2 = Math.round(d * 0.68);
-           var l = Math.round(d * 0.6);
-           var r = 2;
-           var x1 = (w - l) / 2;
-           var x2 = x1 + l / 3;
-           var x3 = x2 + l / 3;
-           var x4 = x3 + l / 3;
-           routeEnter = routeEnter.append('svg').attr('class', 'preset-icon-route').attr('width', w).attr('height', h).attr('viewBox', "0 0 ".concat(w, " ").concat(h));
-           ['casing', 'stroke'].forEach(function (klass) {
-             routeEnter.append('path').attr('d', "M".concat(x1, " ").concat(y1, " L").concat(x2, " ").concat(y2)).attr('class', "segment0 line ".concat(klass));
-             routeEnter.append('path').attr('d', "M".concat(x2, " ").concat(y2, " L").concat(x3, " ").concat(y1)).attr('class', "segment1 line ".concat(klass));
-             routeEnter.append('path').attr('d', "M".concat(x3, " ").concat(y1, " L").concat(x4, " ").concat(y2)).attr('class', "segment2 line ".concat(klass));
-           });
-           [[x1, y1], [x2, y2], [x3, y1], [x4, y2]].forEach(function (point) {
-             routeEnter.append('circle').attr('class', 'vertex').attr('cx', point[0]).attr('cy', point[1]).attr('r', r);
+           _mainFileFetcher.get('intro_graph');
+           var modalSelection = uiModal(selection);
+           modalSelection.select('.modal').attr('class', 'modal-splash modal');
+           var introModal = modalSelection.select('.content').append('div').attr('class', 'fillL');
+           introModal.append('div').attr('class', 'modal-section').append('h3').html(_t.html('splash.welcome'));
+           var modalSection = introModal.append('div').attr('class', 'modal-section');
+           modalSection.append('p').html(_t.html('splash.text', {
+             version: context.version,
+             website: '<a target="_blank" href="https://github.com/openstreetmap/iD/blob/develop/CHANGELOG.md#whats-new">changelog</a>',
+             github: '<a target="_blank" href="https://github.com/openstreetmap/iD/issues">github.com</a>'
+           }));
+           modalSection.append('p').html(_t.html('splash.privacy', {
+             updateMessage: updateMessage,
+             privacyLink: '<a target="_blank" href="https://github.com/openstreetmap/iD/blob/release/PRIVACY.md">' + _t('splash.privacy_policy') + '</a>'
+           }));
+           var buttonWrap = introModal.append('div').attr('class', 'modal-actions');
+           var walkthrough = buttonWrap.append('button').attr('class', 'walkthrough').on('click', function () {
+             context.container().call(uiIntro(context));
+             modalSelection.close();

            });
            });

-           route = routeEnter.merge(route);
+           walkthrough.append('svg').attr('class', 'logo logo-walkthrough').append('use').attr('xlink:href', '#iD-logo-walkthrough');
+           walkthrough.append('div').html(_t.html('splash.walkthrough'));
+           var startEditing = buttonWrap.append('button').attr('class', 'start-editing').on('click', modalSelection.close);
+           startEditing.append('svg').attr('class', 'logo logo-features').append('use').attr('xlink:href', '#iD-logo-features');
+           startEditing.append('div').html(_t.html('splash.start'));
+           modalSelection.select('button.close').attr('class', 'hide');
+         };
+       }

 
 

-           if (drawRoute) {
-             var routeType = p.tags.type === 'waterway' ? 'waterway' : p.tags.route;
-             var segmentPresetIDs = routeSegments[routeType];
+       function uiStatus(context) {
+         var osm = context.connection();
+         return function (selection) {
+           if (!osm) return;

 
 

-             for (var i in segmentPresetIDs) {
-               var segmentPreset = _mainPresetIndex.item(segmentPresetIDs[i]);
-               var segmentTagClasses = svgTagClasses().getClassesString(segmentPreset.tags, '');
-               route.selectAll("path.stroke.segment".concat(i)).attr('class', "segment".concat(i, " line stroke ").concat(segmentTagClasses));
-               route.selectAll("path.casing.segment".concat(i)).attr('class', "segment".concat(i, " line casing ").concat(segmentTagClasses));
+           function update(err, apiStatus) {
+             selection.html('');
+
+             if (err) {
+               if (apiStatus === 'connectionSwitched') {
+                 // if the connection was just switched, we can't rely on
+                 // the status (we're getting the status of the previous api)
+                 return;
+               } else if (apiStatus === 'rateLimited') {
+                 selection.html(_t.html('osm_api_status.message.rateLimit')).append('a').attr('href', '#').attr('class', 'api-status-login').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('login')).on('click.login', function (d3_event) {
+                   d3_event.preventDefault();
+                   osm.authenticate();
+                 });
+               } else {
+                 // don't allow retrying too rapidly
+                 var throttledRetry = throttle(function () {
+                   // try loading the visible tiles
+                   context.loadTiles(context.projection); // manually reload the status too in case all visible tiles were already loaded
+
+                   osm.reloadApiStatus();
+                 }, 2000); // eslint-disable-next-line no-warning-comments
+                 // TODO: nice messages for different error types
+
+
+                 selection.html(_t.html('osm_api_status.message.error') + ' ').append('a').attr('href', '#') // let the user manually retry their connection directly
+                 .html(_t.html('osm_api_status.retry')).on('click.retry', function (d3_event) {
+                   d3_event.preventDefault();
+                   throttledRetry();
+                 });
+               }
+             } else if (apiStatus === 'readonly') {
+               selection.html(_t.html('osm_api_status.message.readonly'));
+             } else if (apiStatus === 'offline') {
+               selection.html(_t.html('osm_api_status.message.offline'));

              }
              }

+
+             selection.attr('class', 'api-status ' + (err ? 'error' : apiStatus));

            }
            }

-         } // Route icons are drawn with a zigzag annotation underneath:
-         //     o   o
-         //    / \ /
-         //   o   o
-         // This dataset defines the styles that are used to draw the zigzag segments.

 
 

+           osm.on('apiStatusChange.uiStatus', update);
+           context.history().on('storage_error', function () {
+             selection.html(_t.html('osm_api_status.message.local_storage_full'));
+             selection.attr('class', 'api-status error');
+           }); // reload the status periodically regardless of other factors

 
 

-         var routeSegments = {
-           bicycle: ['highway/cycleway', 'highway/cycleway', 'highway/cycleway'],
-           bus: ['highway/unclassified', 'highway/secondary', 'highway/primary'],
-           trolleybus: ['highway/unclassified', 'highway/secondary', 'highway/primary'],
-           detour: ['highway/tertiary', 'highway/residential', 'highway/unclassified'],
-           ferry: ['route/ferry', 'route/ferry', 'route/ferry'],
-           foot: ['highway/footway', 'highway/footway', 'highway/footway'],
-           hiking: ['highway/path', 'highway/path', 'highway/path'],
-           horse: ['highway/bridleway', 'highway/bridleway', 'highway/bridleway'],
-           light_rail: ['railway/light_rail', 'railway/light_rail', 'railway/light_rail'],
-           monorail: ['railway/monorail', 'railway/monorail', 'railway/monorail'],
-           pipeline: ['man_made/pipeline', 'man_made/pipeline', 'man_made/pipeline'],
-           piste: ['piste/downhill', 'piste/hike', 'piste/nordic'],
-           power: ['power/line', 'power/line', 'power/line'],
-           road: ['highway/secondary', 'highway/primary', 'highway/trunk'],
-           subway: ['railway/subway', 'railway/subway', 'railway/subway'],
-           train: ['railway/rail', 'railway/rail', 'railway/rail'],
-           tram: ['railway/tram', 'railway/tram', 'railway/tram'],
-           waterway: ['waterway/stream', 'waterway/stream', 'waterway/stream']
+           window.setInterval(function () {
+             osm.reloadApiStatus();
+           }, 90000); // load the initial status in case no OSM data was loaded yet
+
+           osm.reloadApiStatus();

          };
          };

+       }

 
 

-         function render() {
-           var p = _preset.apply(this, arguments);
+       function modeDrawArea(context, wayID, startGraph, button) {
+         var mode = {
+           button: button,
+           id: 'draw-area'
+         };
+         var behavior = behaviorDrawWay(context, wayID, mode, startGraph).on('rejectedSelfIntersection.modeDrawArea', function () {
+           context.ui().flash.iconName('#iD-icon-no').label(_t('self_intersection.error.areas'))();
+         });
+         mode.wayID = wayID;

 
 

-           var geom = _geometry ? _geometry.apply(this, arguments) : null;
+         mode.enter = function () {
+           context.install(behavior);
+         };

 
 

-           if (geom === 'relation' && p.tags && (p.tags.type === 'route' && p.tags.route && routeSegments[p.tags.route] || p.tags.type === 'waterway')) {
-             geom = 'route';
-           }
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };

 
 

-           var showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
-           var isFallback = isSmall() && p.isFallback && p.isFallback();
-           var imageURL = showThirdPartyIcons === 'true' && p.imageURL;
-           var picon = getIcon(p, geom);
-           var isMaki = picon && /^maki-/.test(picon);
-           var isTemaki = picon && /^temaki-/.test(picon);
-           var isFa = picon && /^fa[srb]-/.test(picon);
-           var isiDIcon = picon && !(isMaki || isTemaki || isFa);
-           var isCategory = !p.setTags;
-           var drawPoint = picon && geom === 'point' && isSmall() && !isFallback;
-           var drawVertex = picon !== null && geom === 'vertex' && (!isSmall() || !isFallback);
-           var drawLine = picon && geom === 'line' && !isFallback && !isCategory;
-           var drawArea = picon && geom === 'area' && !isFallback;
-           var drawRoute = picon && geom === 'route';
-           var isFramed = drawVertex || drawArea || drawLine || drawRoute;
-           var tags = !isCategory ? p.setTags({}, geom) : {};
+         mode.selectedIDs = function () {
+           return [wayID];
+         };

 
 

-           for (var k in tags) {
-             if (tags[k] === '*') {
-               tags[k] = 'yes';
-             }
-           }
+         mode.activeID = function () {
+           return behavior && behavior.activeID() || [];
+         };

 
 

-           var tagClasses = svgTagClasses().getClassesString(tags, '');
-           var selection = select(this);
-           var container = selection.selectAll('.preset-icon-container').data([0]);
-           container = container.enter().append('div').attr('class', "preset-icon-container ".concat(_sizeClass)).merge(container);
-           container.classed('showing-img', !!imageURL).classed('fallback', isFallback);
-           renderPointBorder(container, drawPoint);
-           renderCircleFill(container, drawVertex);
-           renderSquareFill(container, drawArea, tagClasses);
-           renderLine(container, drawLine, tagClasses);
-           renderRoute(container, drawRoute, p);
-           var icon = container.selectAll('.preset-icon').data(picon ? [0] : []);
-           icon.exit().remove();
-           icon = icon.enter().append('div').attr('class', 'preset-icon').call(svgIcon('')).merge(icon);
-           icon.attr('class', 'preset-icon ' + (geom ? geom + '-geom' : '')).classed('framed', isFramed).classed('preset-icon-iD', isiDIcon);
-           icon.selectAll('svg').attr('class', 'icon ' + picon + ' ' + (!isiDIcon && geom !== 'line' ? '' : tagClasses));
-           icon.selectAll('use').attr('href', '#' + picon + (isMaki ? isSmall() && geom === 'point' ? '-11' : '-15' : ''));
-           var imageIcon = container.selectAll('img.image-icon').data(imageURL ? [0] : []);
-           imageIcon.exit().remove();
-           imageIcon = imageIcon.enter().append('img').attr('class', 'image-icon').on('load', function () {
-             return container.classed('showing-img', true);
-           }).on('error', function () {
-             return container.classed('showing-img', false);
-           }).merge(imageIcon);
-           imageIcon.attr('src', imageURL);
+         return mode;
+       }
+
+       function modeAddArea(context, mode) {
+         mode.id = 'add-area';
+         var behavior = behaviorAddWay(context).on('start', start).on('startFromWay', startFromWay).on('startFromNode', startFromNode);
+         var defaultTags = {
+           area: 'yes'
+         };
+         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'area');
+
+         function actionClose(wayId) {
+           return function (graph) {
+             return graph.replace(graph.entity(wayId).close());
+           };
+         }
+
+         function start(loc) {
+           var startGraph = context.graph();
+           var node = osmNode({
+             loc: loc
+           });
+           var way = osmWay({
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id));
+           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));
+         }
+
+         function startFromWay(loc, edge) {
+           var startGraph = context.graph();
+           var node = osmNode({
+             loc: loc
+           });
+           var way = osmWay({
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id), actionAddMidpoint({
+             loc: loc,
+             edge: edge
+           }, node));
+           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));
+         }
+
+         function startFromNode(node) {
+           var startGraph = context.graph();
+           var way = osmWay({
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id));
+           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));

          }
 
          }
 

-         presetIcon.preset = function (val) {
-           if (!arguments.length) return _preset;
-           _preset = utilFunctor(val);
-           return presetIcon;
-         };
-
-         presetIcon.geometry = function (val) {
-           if (!arguments.length) return _geometry;
-           _geometry = utilFunctor(val);
-           return presetIcon;
+         mode.enter = function () {
+           context.install(behavior);

          };
 
          };
 

-         presetIcon.sizeClass = function (val) {
-           if (!arguments.length) return _sizeClass;
-           _sizeClass = val;
-           return presetIcon;
+         mode.exit = function () {
+           context.uninstall(behavior);

          };
 
          };
 

-         return presetIcon;
+         return mode;

        }
 
        }
 

-       function uiSectionFeatureType(context) {
-         var dispatch$1 = dispatch('choose');
-         var _entityIDs = [];
-         var _presets = [];
-
-         var _tagReference;
-
-         var section = uiSection('feature-type', context).label(_t.html('inspector.feature_type')).disclosureContent(renderDisclosureContent);
-
-         function renderDisclosureContent(selection) {
-           selection.classed('preset-list-item', true);
-           selection.classed('mixed-types', _presets.length > 1);
-           var presetButtonWrap = selection.selectAll('.preset-list-button-wrap').data([0]).enter().append('div').attr('class', 'preset-list-button-wrap');
-           var presetButton = presetButtonWrap.append('button').attr('class', 'preset-list-button preset-reset').call(uiTooltip().title(_t.html('inspector.back_tooltip')).placement('bottom'));
-           presetButton.append('div').attr('class', 'preset-icon-container');
-           presetButton.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
-           presetButtonWrap.append('div').attr('class', 'accessory-buttons');
-           var tagReferenceBodyWrap = selection.selectAll('.tag-reference-body-wrap').data([0]);
-           tagReferenceBodyWrap = tagReferenceBodyWrap.enter().append('div').attr('class', 'tag-reference-body-wrap').merge(tagReferenceBodyWrap); // update header
+       function modeAddLine(context, mode) {
+         mode.id = 'add-line';
+         var behavior = behaviorAddWay(context).on('start', start).on('startFromWay', startFromWay).on('startFromNode', startFromNode);
+         var defaultTags = {};
+         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'line');

 
 

-           if (_tagReference) {
-             selection.selectAll('.preset-list-button-wrap .accessory-buttons').style('display', _presets.length === 1 ? null : 'none').call(_tagReference.button);
-             tagReferenceBodyWrap.style('display', _presets.length === 1 ? null : 'none').call(_tagReference.body);
-           }
+         function start(loc) {
+           var startGraph = context.graph();
+           var node = osmNode({
+             loc: loc
+           });
+           var way = osmWay({
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id));
+           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
+         }

 
 

-           selection.selectAll('.preset-reset').on('click', function () {
-             dispatch$1.call('choose', this, _presets);
-           }).on('pointerdown pointerup mousedown mouseup', function (d3_event) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
+         function startFromWay(loc, edge) {
+           var startGraph = context.graph();
+           var node = osmNode({
+             loc: loc

            });
            });

-           var geometries = entityGeometries();
-           selection.select('.preset-list-item button').call(uiPresetIcon().geometry(_presets.length === 1 ? geometries.length === 1 && geometries[0] : null).preset(_presets.length === 1 ? _presets[0] : _mainPresetIndex.item('point')));
-           var names = _presets.length === 1 ? [_presets[0].nameLabel(), _presets[0].subtitleLabel()].filter(Boolean) : [_t('inspector.multiple_types')];
-           var label = selection.select('.label-inner');
-           var nameparts = label.selectAll('.namepart').data(names, function (d) {
-             return d;
+           var way = osmWay({
+             tags: defaultTags

            });
            });

-           nameparts.exit().remove();
-           nameparts.enter().append('div').attr('class', 'namepart').html(function (d) {
-             return d;
+           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionAddMidpoint({
+             loc: loc,
+             edge: edge
+           }, node));
+           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
+         }
+
+         function startFromNode(node) {
+           var startGraph = context.graph();
+           var way = osmWay({
+             tags: defaultTags

            });
            });

+           context.perform(actionAddEntity(way), actionAddVertex(way.id, node.id));
+           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));

          }
 
          }
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return section;
+         mode.enter = function () {
+           context.install(behavior);

          };
 
          };
 

-         section.presets = function (val) {
-           if (!arguments.length) return _presets; // don't reload the same preset
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };

 
 

-           if (!utilArrayIdentical(val, _presets)) {
-             _presets = val;
+         return mode;
+       }

 
 

-             if (_presets.length === 1) {
-               _tagReference = uiTagReference(_presets[0].reference()).showing(false);
-             }
-           }
+       function modeAddPoint(context, mode) {
+         mode.id = 'add-point';
+         var behavior = behaviorDraw(context).on('click', add).on('clickWay', addWay).on('clickNode', addNode).on('cancel', cancel).on('finish', cancel);
+         var defaultTags = {};
+         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'point');

 
 

-           return section;
-         };
+         function add(loc) {
+           var node = osmNode({
+             loc: loc,
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(node), _t('operations.add.annotation.point'));
+           enterSelectMode(node);
+         }

 
 

-         function entityGeometries() {
-           var counts = {};
+         function addWay(loc, edge) {
+           var node = osmNode({
+             tags: defaultTags
+           });
+           context.perform(actionAddMidpoint({
+             loc: loc,
+             edge: edge
+           }, node), _t('operations.add.annotation.vertex'));
+           enterSelectMode(node);
+         }

 
 

-           for (var i in _entityIDs) {
-             var geometry = context.graph().geometry(_entityIDs[i]);
-             if (!counts[geometry]) counts[geometry] = 0;
-             counts[geometry] += 1;
+         function enterSelectMode(node) {
+           context.enter(modeSelect(context, [node.id]).newFeature(true));
+         }
+
+         function addNode(node) {
+           if (Object.keys(defaultTags).length === 0) {
+             enterSelectMode(node);
+             return;

            }
 
            }
 

-           return Object.keys(counts).sort(function (geom1, geom2) {
-             return counts[geom2] - counts[geom1];
-           });
-         }
+           var tags = Object.assign({}, node.tags); // shallow copy

 
 

-         return utilRebind(section, dispatch$1, 'on');
-       }
+           for (var key in defaultTags) {
+             tags[key] = defaultTags[key];
+           }

 
 

-       // It borrows some code from uiHelp
+           context.perform(actionChangeTags(node.id, tags), _t('operations.add.annotation.point'));
+           enterSelectMode(node);
+         }

 
 

-       function uiFieldHelp(context, fieldName) {
-         var fieldHelp = {};
+         function cancel() {
+           context.enter(modeBrowse(context));
+         }

 
 

-         var _inspector = select(null);
+         mode.enter = function () {
+           context.install(behavior);
+         };

 
 

-         var _wrap = select(null);
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };

 
 

-         var _body = select(null);
+         return mode;
+       }

 
 

-         var fieldHelpKeys = {
-           restrictions: [['about', ['about', 'from_via_to', 'maxdist', 'maxvia']], ['inspecting', ['about', 'from_shadow', 'allow_shadow', 'restrict_shadow', 'only_shadow', 'restricted', 'only']], ['modifying', ['about', 'indicators', 'allow_turn', 'restrict_turn', 'only_turn']], ['tips', ['simple', 'simple_example', 'indirect', 'indirect_example', 'indirect_noedit']]]
+       function modeSelectNote(context, selectedNoteID) {
+         var mode = {
+           id: 'select-note',
+           button: 'browse'

          };
          };

-         var fieldHelpHeadings = {};
-         var replacements = {
-           distField: _t.html('restriction.controls.distance'),
-           viaField: _t.html('restriction.controls.via'),
-           fromShadow: icon('#iD-turn-shadow', 'inline shadow from'),
-           allowShadow: icon('#iD-turn-shadow', 'inline shadow allow'),
-           restrictShadow: icon('#iD-turn-shadow', 'inline shadow restrict'),
-           onlyShadow: icon('#iD-turn-shadow', 'inline shadow only'),
-           allowTurn: icon('#iD-turn-yes', 'inline turn'),
-           restrictTurn: icon('#iD-turn-no', 'inline turn'),
-           onlyTurn: icon('#iD-turn-only', 'inline turn')
-         }; // For each section, squash all the texts into a single markdown document

 
 

-         var docs = fieldHelpKeys[fieldName].map(function (key) {
-           var helpkey = 'help.field.' + fieldName + '.' + key[0];
-           var text = key[1].reduce(function (all, part) {
-             var subkey = helpkey + '.' + part;
-             var depth = fieldHelpHeadings[subkey]; // is this subkey a heading?
+         var _keybinding = utilKeybinding('select-note');

 
 

-             var hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s
+         var _noteEditor = uiNoteEditor(context).on('change', function () {
+           context.map().pan([0, 0]); // trigger a redraw

 
 

-             return all + hhh + _t.html(subkey, replacements) + '\n\n';
-           }, '');
-           return {
-             key: helpkey,
-             title: _t.html(helpkey + '.title'),
-             html: marked_1(text.trim())
-           };
+           var note = checkSelectedID();
+           if (!note) return;
+           context.ui().sidebar.show(_noteEditor.note(note));

          });
 
          });
 

-         function show() {
-           updatePosition();
-
-           _body.classed('hide', false).style('opacity', '0').transition().duration(200).style('opacity', '1');
-         }
+         var _behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
+         var _newFeature = false;

 
 

-         function hide() {
-           _body.classed('hide', true).transition().duration(200).style('opacity', '0').on('end', function () {
-             _body.classed('hide', true);
-           });
-         }
+         function checkSelectedID() {
+           if (!services.osm) return;
+           var note = services.osm.getNote(selectedNoteID);

 
 

-         function clickHelp(index) {
-           var d = docs[index];
-           var tkeys = fieldHelpKeys[fieldName][index][1];
+           if (!note) {
+             context.enter(modeBrowse(context));
+           }

 
 

-           _body.selectAll('.field-help-nav-item').classed('active', function (d, i) {
-             return i === index;
-           });
+           return note;
+         } // class the note as selected, or return to browse mode if the note is gone

 
 

-           var content = _body.selectAll('.field-help-content').html(d.html); // class the paragraphs so we can find and style them

 
 

+         function selectNote(d3_event, drawn) {
+           if (!checkSelectedID()) return;
+           var selection = context.surface().selectAll('.layer-notes .note-' + selectedNoteID);

 
 

-           content.selectAll('p').attr('class', function (d, i) {
-             return tkeys[i];
-           }); // insert special content for certain help sections
+           if (selection.empty()) {
+             // Return to browse mode if selected DOM elements have
+             // disappeared because the user moved them out of view..
+             var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;

 
 

-           if (d.key === 'help.field.restrictions.inspecting') {
-             content.insert('img', 'p.from_shadow').attr('class', 'field-help-image cf').attr('src', context.imagePath('tr_inspect.gif'));
-           } else if (d.key === 'help.field.restrictions.modifying') {
-             content.insert('img', 'p.allow_turn').attr('class', 'field-help-image cf').attr('src', context.imagePath('tr_modify.gif'));
+             if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
+               context.enter(modeBrowse(context));
+             }
+           } else {
+             selection.classed('selected', true);
+             context.selectedNoteID(selectedNoteID);

            }
          }
 
            }
          }
 

-         fieldHelp.button = function (selection) {
-           if (_body.empty()) return;
-           var button = selection.selectAll('.field-help-button').data([0]); // enter/update
+         function esc() {
+           if (context.container().select('.combobox').size()) return;
+           context.enter(modeBrowse(context));
+         }

 
 

-           button.enter().append('button').attr('class', 'field-help-button').call(svgIcon('#iD-icon-help')).merge(button).on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
+         mode.zoomToSelected = function () {
+           if (!services.osm) return;
+           var note = services.osm.getNote(selectedNoteID);

 
 

-             if (_body.classed('hide')) {
-               show();
-             } else {
-               hide();
-             }
-           });
+           if (note) {
+             context.map().centerZoomEase(note.loc, 20);
+           }

          };
 
          };
 

-         function updatePosition() {
-           var wrap = _wrap.node();
-
-           var inspector = _inspector.node();
+         mode.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return mode;
+         };

 
 

-           var wRect = wrap.getBoundingClientRect();
-           var iRect = inspector.getBoundingClientRect();
+         mode.enter = function () {
+           var note = checkSelectedID();
+           if (!note) return;

 
 

-           _body.style('top', wRect.top + inspector.scrollTop - iRect.top + 'px');
-         }
+           _behaviors.forEach(context.install);

 
 

-         fieldHelp.body = function (selection) {
-           // This control expects the field to have a form-field-input-wrap div
-           _wrap = selection.selectAll('.form-field-input-wrap');
-           if (_wrap.empty()) return; // absolute position relative to the inspector, so it "floats" above the fields
+           _keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);

 
 

-           _inspector = context.container().select('.sidebar .entity-editor-pane .inspector-body');
-           if (_inspector.empty()) return;
-           _body = _inspector.selectAll('.field-help-body').data([0]);
+           select(document).call(_keybinding);
+           selectNote();
+           var sidebar = context.ui().sidebar;
+           sidebar.show(_noteEditor.note(note).newNote(_newFeature)); // expand the sidebar, avoid obscuring the note if needed

 
 

-           var enter = _body.enter().append('div').attr('class', 'field-help-body hide'); // initially hidden
+           sidebar.expand(sidebar.intersects(note.extent()));
+           context.map().on('drawn.select', selectNote);
+         };

 
 

+         mode.exit = function () {
+           _behaviors.forEach(context.uninstall);

 
 

-           var titleEnter = enter.append('div').attr('class', 'field-help-title cf');
-           titleEnter.append('h2').attr('class', _mainLocalizer.textDirection() === 'rtl' ? 'fr' : 'fl').html(_t.html('help.field.' + fieldName + '.title'));
-           titleEnter.append('button').attr('class', 'fr close').on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             hide();
-           }).call(svgIcon('#iD-icon-close'));
-           var navEnter = enter.append('div').attr('class', 'field-help-nav cf');
-           var titles = docs.map(function (d) {
-             return d.title;
-           });
-           navEnter.selectAll('.field-help-nav-item').data(titles).enter().append('div').attr('class', 'field-help-nav-item').html(function (d) {
-             return d;
-           }).on('click', function (d3_event, d) {
-             d3_event.stopPropagation();
-             d3_event.preventDefault();
-             clickHelp(titles.indexOf(d));
-           });
-           enter.append('div').attr('class', 'field-help-content');
-           _body = _body.merge(enter);
-           clickHelp(0);
+           select(document).call(_keybinding.unbind);
+           context.surface().selectAll('.layer-notes .selected').classed('selected hover', false);
+           context.map().on('drawn.select', null);
+           context.ui().sidebar.hide();
+           context.selectedNoteID(null);

          };
 
          };
 

-         return fieldHelp;
+         return mode;

        }
 
        }
 

-       function uiFieldCheck(field, context) {
-         var dispatch$1 = dispatch('change');
-         var options = field.strings && field.strings.options;
-         var values = [];
-         var texts = [];
+       function modeAddNote(context) {
+         var mode = {
+           id: 'add-note',
+           button: 'note',
+           description: _t.html('modes.add_note.description'),
+           key: _t('modes.add_note.key')
+         };
+         var behavior = behaviorDraw(context).on('click', add).on('cancel', cancel).on('finish', cancel);

 
 

-         var _tags;
+         function add(loc) {
+           var osm = services.osm;
+           if (!osm) return;
+           var note = osmNote({
+             loc: loc,
+             status: 'open',
+             comments: []
+           });
+           osm.replaceNote(note); // force a reraw (there is no history change that would otherwise do this)

 
 

-         var input = select(null);
-         var text = select(null);
-         var label = select(null);
-         var reverser = select(null);
+           context.map().pan([0, 0]);
+           context.selectedNoteID(note.id).enter(modeSelectNote(context, note.id).newFeature(true));
+         }

 
 

-         var _impliedYes;
+         function cancel() {
+           context.enter(modeBrowse(context));
+         }

 
 

-         var _entityIDs = [];
+         mode.enter = function () {
+           context.install(behavior);
+         };

 
 

-         var _value;
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };

 
 

-         if (options) {
-           for (var k in options) {
-             values.push(k === 'undefined' ? undefined : k);
-             texts.push(field.t.html('options.' + k, {
-               'default': options[k]
-             }));
-           }
-         } else {
-           values = [undefined, 'yes'];
-           texts = [_t.html('inspector.unknown'), _t.html('inspector.check.yes')];
+         return mode;
+       }

 
 

-           if (field.type !== 'defaultCheck') {
-             values.push('no');
-             texts.push(_t.html('inspector.check.no'));
-           }
-         } // Checks tags to see whether an undefined value is "Assumed to be Yes"
+       var JXON = new function () {
+         var sValueProp = 'keyValue',
+             sAttributesProp = 'keyAttributes',
+             sAttrPref = '@',

 
 

+         /* you can customize these values */
+         aCache = [],
+             rIsNull = /^\s*$/,
+             rIsBool = /^(?:true|false)$/i;

 
 

-         function checkImpliedYes() {
-           _impliedYes = field.id === 'oneway_yes'; // hack: pretend `oneway` field is a `oneway_yes` field
-           // where implied oneway tag exists (e.g. `junction=roundabout`) #2220, #1841
+         function parseText(sValue) {
+           if (rIsNull.test(sValue)) {
+             return null;
+           }

 
 

-           if (field.id === 'oneway') {
-             var entity = context.entity(_entityIDs[0]);
+           if (rIsBool.test(sValue)) {
+             return sValue.toLowerCase() === 'true';
+           }

 
 

-             for (var key in entity.tags) {
-               if (key in osmOneWayTags && entity.tags[key] in osmOneWayTags[key]) {
-                 _impliedYes = true;
-                 texts[0] = _t.html('presets.fields.oneway_yes.options.undefined');
-                 break;
-               }
-             }
+           if (isFinite(sValue)) {
+             return parseFloat(sValue);

            }
            }

-         }

 
 

-         function reverserHidden() {
-           if (!context.container().select('div.inspector-hover').empty()) return true;
-           return !(_value === 'yes' || _impliedYes && !_value);
-         }
+           if (isFinite(Date.parse(sValue))) {
+             return new Date(sValue);
+           }

 
 

-         function reverserSetText(selection) {
-           var entity = _entityIDs.length && context.hasEntity(_entityIDs[0]);
-           if (reverserHidden() || !entity) return selection;
-           var first = entity.first();
-           var last = entity.isClosed() ? entity.nodes[entity.nodes.length - 2] : entity.last();
-           var pseudoDirection = first < last;
-           var icon = pseudoDirection ? '#iD-icon-forward' : '#iD-icon-backward';
-           selection.selectAll('.reverser-span').html(_t.html('inspector.check.reverser')).call(svgIcon(icon, 'inline'));
-           return selection;
+           return sValue;

          }
 
          }
 

-         var check = function check(selection) {
-           checkImpliedYes();
-           label = selection.selectAll('.form-field-input-wrap').data([0]);
-           var enter = label.enter().append('label').attr('class', 'form-field-input-wrap form-field-input-check');
-           enter.append('input').property('indeterminate', field.type !== 'defaultCheck').attr('type', 'checkbox').attr('id', field.domId);
-           enter.append('span').html(texts[0]).attr('class', 'value');
-
-           if (field.type === 'onewayCheck') {
-             enter.append('button').attr('class', 'reverser' + (reverserHidden() ? ' hide' : '')).append('span').attr('class', 'reverser-span');
-           }
-
-           label = label.merge(enter);
-           input = label.selectAll('input');
-           text = label.selectAll('span.value');
-           input.on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             var t = {};
+         function EmptyTree() {}

 
 

-             if (Array.isArray(_tags[field.key])) {
-               if (values.indexOf('yes') !== -1) {
-                 t[field.key] = 'yes';
-               } else {
-                 t[field.key] = values[0];
-               }
-             } else {
-               t[field.key] = values[(values.indexOf(_value) + 1) % values.length];
-             } // Don't cycle through `alternating` or `reversible` states - #4970
-             // (They are supported as translated strings, but should not toggle with clicks)
+         EmptyTree.prototype.toString = function () {
+           return 'null';
+         };

 
 

+         EmptyTree.prototype.valueOf = function () {
+           return null;
+         };

 
 

-             if (t[field.key] === 'reversible' || t[field.key] === 'alternating') {
-               t[field.key] = values[0];
-             }
+         function objectify(vValue) {
+           return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue);
+         }

 
 

-             dispatch$1.call('change', this, t);
-           });
+         function createObjTree(oParentNode, nVerb, bFreeze, bNesteAttr) {
+           var nLevelStart = aCache.length,
+               bChildren = oParentNode.hasChildNodes(),
+               bAttributes = oParentNode.hasAttributes(),
+               bHighVerb = Boolean(nVerb & 2);
+           var sProp,
+               vContent,
+               nLength = 0,
+               sCollectedTxt = '',
+               vResult = bHighVerb ? {} :
+           /* put here the default value for empty nodes: */
+           true;

 
 

-           if (field.type === 'onewayCheck') {
-             reverser = label.selectAll('.reverser');
-             reverser.call(reverserSetText).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               context.perform(function (graph) {
-                 for (var i in _entityIDs) {
-                   graph = actionReverse(_entityIDs[i])(graph);
-                 }
+           if (bChildren) {
+             for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) {
+               oNode = oParentNode.childNodes.item(nItem);

 
 

-                 return graph;
-               }, _t('operations.reverse.annotation.line', {
-                 n: 1
-               })); // must manually revalidate since no 'change' event was called
+               if (oNode.nodeType === 4) {
+                 /* nodeType is 'CDATASection' (4) */
+                 sCollectedTxt += oNode.nodeValue;
+               } else if (oNode.nodeType === 3) {
+                 /* nodeType is 'Text' (3) */
+                 sCollectedTxt += oNode.nodeValue.trim();
+               } else if (oNode.nodeType === 1 && !oNode.prefix) {
+                 /* nodeType is 'Element' (1) */
+                 aCache.push(oNode);
+               }
+             }
+           }

 
 

-               context.validator().validate();
-               select(this).call(reverserSetText);
-             });
+           var nLevelEnd = aCache.length,
+               vBuiltVal = parseText(sCollectedTxt);
+
+           if (!bHighVerb && (bChildren || bAttributes)) {
+             vResult = nVerb === 0 ? objectify(vBuiltVal) : {};

            }
            }

-         };

 
 

-         check.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return check;
-         };
+           for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) {
+             sProp = aCache[nElId].nodeName.toLowerCase();
+             vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr);

 
 

-         check.tags = function (tags) {
-           _tags = tags;
+             if (vResult.hasOwnProperty(sProp)) {
+               if (vResult[sProp].constructor !== Array) {
+                 vResult[sProp] = [vResult[sProp]];
+               }

 
 

-           function isChecked(val) {
-             return val !== 'no' && val !== '' && val !== undefined && val !== null;
+               vResult[sProp].push(vContent);
+             } else {
+               vResult[sProp] = vContent;
+               nLength++;
+             }

            }
 
            }
 

-           function textFor(val) {
-             if (val === '') val = undefined;
-             var index = values.indexOf(val);
-             return index !== -1 ? texts[index] : '"' + val + '"';
-           }
+           if (bAttributes) {
+             var nAttrLen = oParentNode.attributes.length,
+                 sAPrefix = bNesteAttr ? '' : sAttrPref,
+                 oAttrParent = bNesteAttr ? {} : vResult;

 
 

-           checkImpliedYes();
-           var isMixed = Array.isArray(tags[field.key]);
-           _value = !isMixed && tags[field.key] && tags[field.key].toLowerCase();
+             for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) {
+               oAttrib = oParentNode.attributes.item(nAttrib);
+               oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim());
+             }

 
 

-           if (field.type === 'onewayCheck' && (_value === '1' || _value === '-1')) {
-             _value = 'yes';
-           }
+             if (bNesteAttr) {
+               if (bFreeze) {
+                 Object.freeze(oAttrParent);
+               }

 
 

-           input.property('indeterminate', isMixed || field.type !== 'defaultCheck' && !_value).property('checked', isChecked(_value));
-           text.html(isMixed ? _t.html('inspector.multiple_values') : textFor(_value)).classed('mixed', isMixed);
-           label.classed('set', !!_value);
+               vResult[sAttributesProp] = oAttrParent;
+               nLength -= nAttrLen - 1;
+             }
+           }

 
 

-           if (field.type === 'onewayCheck') {
-             reverser.classed('hide', reverserHidden()).call(reverserSetText);
+           if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) {
+             vResult[sValueProp] = vBuiltVal;
+           } else if (!bHighVerb && nLength === 0 && sCollectedTxt) {
+             vResult = vBuiltVal;

            }
            }

-         };

 
 

-         check.focus = function () {
-           input.node().focus();
-         };
+           if (bFreeze && (bHighVerb || nLength > 0)) {
+             Object.freeze(vResult);
+           }

 
 

-         return utilRebind(check, dispatch$1, 'on');
-       }
+           aCache.length = nLevelStart;
+           return vResult;
+         }

 
 

-       function uiFieldCombo(field, context) {
-         var dispatch$1 = dispatch('change');
+         function loadObjTree(oXMLDoc, oParentEl, oParentObj) {
+           var vValue, oChild;

 
 

-         var _isMulti = field.type === 'multiCombo' || field.type === 'manyCombo';
+           if (oParentObj instanceof String || oParentObj instanceof Number || oParentObj instanceof Boolean) {
+             oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toString()));
+             /* verbosity level is 0 */
+           } else if (oParentObj.constructor === Date) {
+             oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toGMTString()));
+           }

 
 

-         var _isNetwork = field.type === 'networkCombo';
+           for (var sName in oParentObj) {
+             vValue = oParentObj[sName];

 
 

-         var _isSemi = field.type === 'semiCombo';
+             if (isFinite(sName) || vValue instanceof Function) {
+               continue;
+             }
+             /* verbosity level is 0 */

 
 

-         var _optstrings = field.strings && field.strings.options;

 
 

-         var _optarray = field.options;
+             if (sName === sValueProp) {
+               if (vValue !== null && vValue !== true) {
+                 oParentEl.appendChild(oXMLDoc.createTextNode(vValue.constructor === Date ? vValue.toGMTString() : String(vValue)));
+               }
+             } else if (sName === sAttributesProp) {
+               /* verbosity level is 3 */
+               for (var sAttrib in vValue) {
+                 oParentEl.setAttribute(sAttrib, vValue[sAttrib]);
+               }
+             } else if (sName.charAt(0) === sAttrPref) {
+               oParentEl.setAttribute(sName.slice(1), vValue);
+             } else if (vValue.constructor === Array) {
+               for (var nItem = 0; nItem < vValue.length; nItem++) {
+                 oChild = oXMLDoc.createElement(sName);
+                 loadObjTree(oXMLDoc, oChild, vValue[nItem]);
+                 oParentEl.appendChild(oChild);
+               }
+             } else {
+               oChild = oXMLDoc.createElement(sName);

 
 

-         var _snake_case = field.snake_case || field.snake_case === undefined;
+               if (vValue instanceof Object) {
+                 loadObjTree(oXMLDoc, oChild, vValue);
+               } else if (vValue !== null && vValue !== true) {
+                 oChild.appendChild(oXMLDoc.createTextNode(vValue.toString()));
+               }

 
 

-         var _combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(field.caseSensitive).minItems(_isMulti || _isSemi ? 1 : 2);
+               oParentEl.appendChild(oChild);
+             }
+           }
+         }

 
 

-         var _container = select(null);
+         this.build = function (oXMLParent, nVerbosity
+         /* optional */
+         , bFreeze
+         /* optional */
+         , bNesteAttributes
+         /* optional */
+         ) {
+           var _nVerb = arguments.length > 1 && typeof nVerbosity === 'number' ? nVerbosity & 3 :
+           /* put here the default verbosity level: */
+           1;

 
 

-         var _inputWrap = select(null);
+           return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3);
+         };

 
 

-         var _input = select(null);
+         this.unbuild = function (oObjTree) {
+           var oNewDoc = document.implementation.createDocument('', '', null);
+           loadObjTree(oNewDoc, oNewDoc, oObjTree);
+           return oNewDoc;
+         };

 
 

-         var _comboData = [];
-         var _multiData = [];
-         var _entityIDs = [];
+         this.stringify = function (oObjTree) {
+           return new XMLSerializer().serializeToString(JXON.unbuild(oObjTree));
+         };
+       }(); // var myObject = JXON.build(doc);
+       // we got our javascript object! try: alert(JSON.stringify(myObject));
+       // var newDoc = JXON.unbuild(myObject);
+       // we got our Document instance! try: alert((new XMLSerializer()).serializeToString(newDoc));

 
 

-         var _tags;
+       function uiConflicts(context) {
+         var dispatch = dispatch$8('cancel', 'save');
+         var keybinding = utilKeybinding('conflicts');

 
 

-         var _countryCode;
+         var _origChanges;

 
 

-         var _staticPlaceholder; // initialize deprecated tags array
+         var _conflictList;

 
 

+         var _shownConflictIndex;

 
 

-         var _dataDeprecated = [];
-         _mainFileFetcher.get('deprecated').then(function (d) {
-           _dataDeprecated = d;
-         })["catch"](function () {
-           /* ignore */
-         }); // ensure multiCombo field.key ends with a ':'
+         function keybindingOn() {
+           select(document).call(keybinding.on('⎋', cancel, true));
+         }

 
 

-         if (_isMulti && field.key && /[^:]$/.test(field.key)) {
-           field.key += ':';
+         function keybindingOff() {
+           select(document).call(keybinding.unbind);

          }
 
          }
 

-         function snake(s) {
-           return s.replace(/\s+/g, '_');
+         function tryAgain() {
+           keybindingOff();
+           dispatch.call('save');

          }
 
          }
 

-         function unsnake(s) {
-           return s.replace(/_+/g, ' ');
+         function cancel() {
+           keybindingOff();
+           dispatch.call('cancel');

          }
 
          }
 

-         function clean(s) {
-           return s.split(';').map(function (s) {
-             return s.trim();
-           }).join(';');
-         } // returns the tag value for a display value
-         // (for multiCombo, dval should be the key suffix, not the entire key)
+         function conflicts(selection) {
+           keybindingOn();
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'fr').on('click', cancel).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h3').html(_t.html('save.conflict.header'));
+           var bodyEnter = selection.selectAll('.body').data([0]).enter().append('div').attr('class', 'body fillL');
+           var conflictsHelpEnter = bodyEnter.append('div').attr('class', 'conflicts-help').html(_t.html('save.conflict.help')); // Download changes link

 
 

+           var detected = utilDetect();
+           var changeset = new osmChangeset();
+           delete changeset.id; // Export without changeset_id

 
 

-         function tagValue(dval) {
-           dval = clean(dval || '');
+           var data = JXON.stringify(changeset.osmChangeJXON(_origChanges));
+           var blob = new Blob([data], {
+             type: 'text/xml;charset=utf-8;'
+           });
+           var fileName = 'changes.osc';
+           var linkEnter = conflictsHelpEnter.selectAll('.download-changes').append('a').attr('class', 'download-changes');

 
 

-           if (_optstrings) {
-             var found = _comboData.find(function (o) {
-               return o.key && clean(o.value) === dval;
+           if (detected.download) {
+             // All except IE11 and Edge
+             linkEnter // download the data as a file
+             .attr('href', window.URL.createObjectURL(blob)).attr('download', fileName);
+           } else {
+             // IE11 and Edge
+             linkEnter // open data uri in a new tab
+             .attr('target', '_blank').on('click.download', function () {
+               navigator.msSaveBlob(blob, fileName);

              });
              });

-
-             if (found) {
-               return found.key;
-             }
-           }
-
-           if (field.type === 'typeCombo' && !dval) {
-             return 'yes';

            }
 
            }
 

-           return (_snake_case ? snake(dval) : dval) || undefined;
-         } // returns the display value for a tag value
-         // (for multiCombo, tval should be the key suffix, not the entire key)
-
-
-         function displayValue(tval) {
-           tval = tval || '';
+           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').html(_t.html('save.conflict.download_changes'));
+           bodyEnter.append('div').attr('class', 'conflict-container fillL3').call(showConflict, 0);
+           bodyEnter.append('div').attr('class', 'conflicts-done').attr('opacity', 0).style('display', 'none').html(_t.html('save.conflict.done'));
+           var buttonsEnter = bodyEnter.append('div').attr('class', 'buttons col12 joined conflicts-buttons');
+           buttonsEnter.append('button').attr('disabled', _conflictList.length > 1).attr('class', 'action conflicts-button col6').html(_t.html('save.title')).on('click.try_again', tryAgain);
+           buttonsEnter.append('button').attr('class', 'secondary-action conflicts-button col6').html(_t.html('confirm.cancel')).on('click.cancel', cancel);
+         }

 
 

-           if (_optstrings) {
-             var found = _comboData.find(function (o) {
-               return o.key === tval && o.value;
-             });
+         function showConflict(selection, index) {
+           index = utilWrap(index, _conflictList.length);
+           _shownConflictIndex = index;
+           var parent = select(selection.node().parentNode); // enable save button if this is the last conflict being reviewed..

 
 

-             if (found) {
-               return found.value;
-             }
+           if (index === _conflictList.length - 1) {
+             window.setTimeout(function () {
+               parent.select('.conflicts-button').attr('disabled', null);
+               parent.select('.conflicts-done').transition().attr('opacity', 1).style('display', 'block');
+             }, 250);

            }
 
            }
 

-           if (field.type === 'typeCombo' && tval.toLowerCase() === 'yes') {
-             return '';
-           }
+           var conflict = selection.selectAll('.conflict').data([_conflictList[index]]);
+           conflict.exit().remove();
+           var conflictEnter = conflict.enter().append('div').attr('class', 'conflict');
+           conflictEnter.append('h4').attr('class', 'conflict-count').html(_t.html('save.conflict.count', {
+             num: index + 1,
+             total: _conflictList.length
+           }));
+           conflictEnter.append('a').attr('class', 'conflict-description').attr('href', '#').html(function (d) {
+             return d.name;
+           }).on('click', function (d3_event, d) {
+             d3_event.preventDefault();
+             zoomToEntity(d.id);
+           });
+           var details = conflictEnter.append('div').attr('class', 'conflict-detail-container');
+           details.append('ul').attr('class', 'conflict-detail-list').selectAll('li').data(function (d) {
+             return d.details || [];
+           }).enter().append('li').attr('class', 'conflict-detail-item').html(function (d) {
+             return d;
+           });
+           details.append('div').attr('class', 'conflict-choices').call(addChoices);
+           details.append('div').attr('class', 'conflict-nav-buttons joined cf').selectAll('button').data(['previous', 'next']).enter().append('button').html(function (d) {
+             return _t.html('save.conflict.' + d);
+           }).attr('class', 'conflict-nav-button action col6').attr('disabled', function (d, i) {
+             return i === 0 && index === 0 || i === 1 && index === _conflictList.length - 1 || null;
+           }).on('click', function (d3_event, d) {
+             d3_event.preventDefault();
+             var container = parent.selectAll('.conflict-container');
+             var sign = d === 'previous' ? -1 : 1;
+             container.selectAll('.conflict').remove();
+             container.call(showConflict, index + sign);
+           });
+         }

 
 

-           return _snake_case ? unsnake(tval) : tval;
-         } // Compute the difference between arrays of objects by `value` property
-         //
-         // objectDifference([{value:1}, {value:2}, {value:3}], [{value:2}])
-         // > [{value:1}, {value:3}]
-         //
+         function addChoices(selection) {
+           var choices = selection.append('ul').attr('class', 'layer-list').selectAll('li').data(function (d) {
+             return d.choices || [];
+           }); // enter

 
 

+           var choicesEnter = choices.enter().append('li').attr('class', 'layer');
+           var labelEnter = choicesEnter.append('label');
+           labelEnter.append('input').attr('type', 'radio').attr('name', function (d) {
+             return d.id;
+           }).on('change', function (d3_event, d) {
+             var ul = this.parentNode.parentNode.parentNode;
+             ul.__data__.chosen = d.id;
+             choose(d3_event, ul, d);
+           });
+           labelEnter.append('span').html(function (d) {
+             return d.text;
+           }); // update

 
 

-         function objectDifference(a, b) {
-           return a.filter(function (d1) {
-             return !b.some(function (d2) {
-               return !d2.isMixed && d1.value === d2.value;
-             });
+           choicesEnter.merge(choices).each(function (d) {
+             var ul = this.parentNode;
+
+             if (ul.__data__.chosen === d.id) {
+               choose(null, ul, d);
+             }

            });
          }
 
            });
          }
 

-         function initCombo(selection, attachTo) {
-           if (_optstrings) {
-             selection.attr('readonly', 'readonly');
-             selection.call(_combobox, attachTo);
-             setStaticValues(setPlaceholder);
-           } else if (_optarray) {
-             selection.call(_combobox, attachTo);
-             setStaticValues(setPlaceholder);
-           } else if (services.taginfo) {
-             selection.call(_combobox.fetcher(setTaginfoValues), attachTo);
-             setTaginfoValues('', setPlaceholder);
-           }
+         function choose(d3_event, ul, datum) {
+           if (d3_event) d3_event.preventDefault();
+           select(ul).selectAll('li').classed('active', function (d) {
+             return d === datum;
+           }).selectAll('input').property('checked', function (d) {
+             return d === datum;
+           });
+           var extent = geoExtent();
+           var entity;
+           entity = context.graph().hasEntity(datum.id);
+           if (entity) extent._extend(entity.extent(context.graph()));
+           datum.action();
+           entity = context.graph().hasEntity(datum.id);
+           if (entity) extent._extend(entity.extent(context.graph()));
+           zoomToEntity(datum.id, extent);

          }
 
          }
 

-         function setStaticValues(callback) {
-           if (!(_optstrings || _optarray)) return;
+         function zoomToEntity(id, extent) {
+           context.surface().selectAll('.hover').classed('hover', false);
+           var entity = context.graph().hasEntity(id);

 
 

-           if (_optstrings) {
-             _comboData = Object.keys(_optstrings).map(function (k) {
-               var v = field.t('options.' + k, {
-                 'default': _optstrings[k]
-               });
-               return {
-                 key: k,
-                 value: v,
-                 title: v,
-                 display: field.t.html('options.' + k, {
-                   'default': _optstrings[k]
-                 })
-               };
-             });
-           } else if (_optarray) {
-             _comboData = _optarray.map(function (k) {
-               var v = _snake_case ? unsnake(k) : k;
-               return {
-                 key: k,
-                 value: v,
-                 title: v
-               };
-             });
+           if (entity) {
+             if (extent) {
+               context.map().trimmedExtent(extent);
+             } else {
+               context.map().zoomToEase(entity);
+             }
+
+             context.surface().selectAll(utilEntityOrMemberSelector([entity.id], context.graph())).classed('hover', true);

            }
            }

+         } // The conflict list should be an array of objects like:
+         // {
+         //     id: id,
+         //     name: entityName(local),
+         //     details: merge.conflicts(),
+         //     chosen: 1,
+         //     choices: [
+         //         choice(id, keepMine, forceLocal),
+         //         choice(id, keepTheirs, forceRemote)
+         //     ]
+         // }

 
 

-           _combobox.data(objectDifference(_comboData, _multiData));

 
 

-           if (callback) callback(_comboData);
-         }
+         conflicts.conflictList = function (_) {
+           if (!arguments.length) return _conflictList;
+           _conflictList = _;
+           return conflicts;
+         };

 
 

-         function setTaginfoValues(q, callback) {
-           var fn = _isMulti ? 'multikeys' : 'values';
-           var query = (_isMulti ? field.key : '') + q;
-           var hasCountryPrefix = _isNetwork && _countryCode && _countryCode.indexOf(q.toLowerCase()) === 0;
+         conflicts.origChanges = function (_) {
+           if (!arguments.length) return _origChanges;
+           _origChanges = _;
+           return conflicts;
+         };

 
 

-           if (hasCountryPrefix) {
-             query = _countryCode + ':';
+         conflicts.shownEntityIds = function () {
+           if (_conflictList && typeof _shownConflictIndex === 'number') {
+             return [_conflictList[_shownConflictIndex].id];

            }
 
            }
 

-           var params = {
-             debounce: q !== '',
-             key: field.key,
-             query: query
-           };
+           return [];
+         };

 
 

-           if (_entityIDs.length) {
-             params.geometry = context.graph().geometry(_entityIDs[0]);
-           }
+         return utilRebind(conflicts, dispatch, 'on');
+       }

 
 

-           services.taginfo[fn](params, function (err, data) {
-             if (err) return;
-             data = data.filter(function (d) {
-               if (field.type === 'typeCombo' && d.value === 'yes') {
-                 // don't show the fallback value
-                 return false;
-               } // don't show values with very low usage
+       function uiConfirm(selection) {
+         var modalSelection = uiModal(selection);
+         modalSelection.select('.modal').classed('modal-alert', true);
+         var section = modalSelection.select('.content');
+         section.append('div').attr('class', 'modal-section header');
+         section.append('div').attr('class', 'modal-section message-text');
+         var buttons = section.append('div').attr('class', 'modal-section buttons cf');

 
 

+         modalSelection.okButton = function () {
+           buttons.append('button').attr('class', 'button ok-button action').on('click.confirm', function () {
+             modalSelection.remove();
+           }).html(_t.html('confirm.okay')).node().focus();
+           return modalSelection;
+         };

 
 

-               return !d.count || d.count > 10;
-             });
-             var deprecatedValues = osmEntity.deprecatedTagValuesByKey(_dataDeprecated)[field.key];
+         return modalSelection;
+       }

 
 

-             if (deprecatedValues) {
-               // don't suggest deprecated tag values
-               data = data.filter(function (d) {
-                 return deprecatedValues.indexOf(d.value) === -1;
-               });
-             }
+       function uiChangesetEditor(context) {
+         var dispatch = dispatch$8('change');
+         var formFields = uiFormFields(context);
+         var commentCombo = uiCombobox(context, 'comment').caseSensitive(true);

 
 

-             if (hasCountryPrefix) {
-               data = data.filter(function (d) {
-                 return d.value.toLowerCase().indexOf(_countryCode + ':') === 0;
-               });
-             } // hide the caret if there are no suggestions
+         var _fieldsArr;

 
 

+         var _tags;

 
 

-             _container.classed('empty-combobox', data.length === 0);
+         var _changesetID;

 
 

-             _comboData = data.map(function (d) {
-               var k = d.value;
-               if (_isMulti) k = k.replace(field.key, '');
-               var v = _snake_case ? unsnake(k) : k;
-               return {
-                 key: k,
-                 value: v,
-                 title: _isMulti ? v : d.title
-               };
-             });
-             _comboData = objectDifference(_comboData, _multiData);
-             if (callback) callback(_comboData);
-           });
+         function changesetEditor(selection) {
+           render(selection);

          }
 
          }
 

-         function setPlaceholder(values) {
-           if (_isMulti || _isSemi) {
-             _staticPlaceholder = field.placeholder() || _t('inspector.add');
-           } else {
-             var vals = values.map(function (d) {
-               return d.value;
-             }).filter(function (s) {
-               return s.length < 20;
-             });
-             var placeholders = vals.length > 1 ? vals : values.map(function (d) {
-               return d.key;
-             });
-             _staticPlaceholder = field.placeholder() || placeholders.slice(0, 3).join(', ');
-           }
-
-           if (!/(…|\.\.\.)$/.test(_staticPlaceholder)) {
-             _staticPlaceholder += '…';
-           }
-
-           var ph;
+         function render(selection) {
+           var initial = false;

 
 

-           if (!_isMulti && !_isSemi && _tags && Array.isArray(_tags[field.key])) {
-             ph = _t('inspector.multiple_values');
-           } else {
-             ph = _staticPlaceholder;
-           }
+           if (!_fieldsArr) {
+             initial = true;
+             var presets = _mainPresetIndex;
+             _fieldsArr = [uiField(context, presets.field('comment'), null, {
+               show: true,
+               revert: false
+             }), uiField(context, presets.field('source'), null, {
+               show: false,
+               revert: false
+             }), uiField(context, presets.field('hashtags'), null, {
+               show: false,
+               revert: false
+             })];

 
 

-           _container.selectAll('input').attr('placeholder', ph);
-         }
+             _fieldsArr.forEach(function (field) {
+               field.on('change', function (t, onInput) {
+                 dispatch.call('change', field, undefined, t, onInput);
+               });
+             });
+           }

 
 

-         function change() {
-           var t = {};
-           var val;
+           _fieldsArr.forEach(function (field) {
+             field.tags(_tags);
+           });

 
 

-           if (_isMulti || _isSemi) {
-             val = tagValue(utilGetSetValue(_input).replace(/,/g, ';')) || '';
+           selection.call(formFields.fieldsArr(_fieldsArr));

 
 

-             _container.classed('active', false);
+           if (initial) {
+             var commentField = selection.select('.form-field-comment textarea');
+             var commentNode = commentField.node();

 
 

-             utilGetSetValue(_input, '');
-             var vals = val.split(';').filter(Boolean);
-             if (!vals.length) return;
+             if (commentNode) {
+               commentNode.focus();
+               commentNode.select();
+             } // trigger a 'blur' event so that comment field can be cleaned
+             // and checked for hashtags, even if retrieved from localstorage

 
 

-             if (_isMulti) {
-               utilArrayUniq(vals).forEach(function (v) {
-                 var key = (field.key || '') + v;

 
 

-                 if (_tags) {
-                   // don't set a multicombo value to 'yes' if it already has a non-'no' value
-                   // e.g. `language:de=main`
-                   var old = _tags[key];
-                   if (typeof old === 'string' && old.toLowerCase() !== 'no') return;
-                 }
+             utilTriggerEvent(commentField, 'blur');
+             var osm = context.connection();

 
 

-                 key = context.cleanTagKey(key);
-                 field.keys.push(key);
-                 t[key] = 'yes';
-               });
-             } else if (_isSemi) {
-               var arr = _multiData.map(function (d) {
-                 return d.key;
+             if (osm) {
+               osm.userChangesets(function (err, changesets) {
+                 if (err) return;
+                 var comments = changesets.map(function (changeset) {
+                   var comment = changeset.tags.comment;
+                   return comment ? {
+                     title: comment,
+                     value: comment
+                   } : null;
+                 }).filter(Boolean);
+                 commentField.call(commentCombo.data(utilArrayUniqBy(comments, 'title')));

                });
                });

-
-               arr = arr.concat(vals);
-               t[field.key] = context.cleanTagValue(utilArrayUniq(arr).filter(Boolean).join(';'));

              }
              }

+           } // Add warning if comment mentions Google

 
 

-             window.setTimeout(function () {
-               _input.node().focus();
-             }, 10);
-           } else {
-             var rawValue = utilGetSetValue(_input); // don't override multiple values with blank string

 
 

-             if (!rawValue && Array.isArray(_tags[field.key])) return;
-             val = context.cleanTagValue(tagValue(rawValue));
-             t[field.key] = val || undefined;
-           }
+           var hasGoogle = _tags.comment.match(/google/i);

 
 

-           dispatch$1.call('change', this, t);
+           var commentWarning = selection.select('.form-field-comment').selectAll('.comment-warning').data(hasGoogle ? [0] : []);
+           commentWarning.exit().transition().duration(200).style('opacity', 0).remove();
+           var commentEnter = commentWarning.enter().insert('div', '.tag-reference-body').attr('class', 'field-warning comment-warning').style('opacity', 0);
+           commentEnter.append('a').attr('target', '_blank').call(svgIcon('#iD-icon-alert', 'inline')).attr('href', _t('commit.google_warning_link')).append('span').html(_t.html('commit.google_warning'));
+           commentEnter.transition().duration(200).style('opacity', 1);

          }
 
          }
 

-         function removeMultikey(d3_event, d) {
-           d3_event.preventDefault();
-           d3_event.stopPropagation();
-           var t = {};
+         changesetEditor.tags = function (_) {
+           if (!arguments.length) return _tags;
+           _tags = _; // Don't reset _fieldsArr here.

 
 

-           if (_isMulti) {
-             t[d.key] = undefined;
-           } else if (_isSemi) {
-             var arr = _multiData.map(function (md) {
-               return md.key === d.key ? null : md.key;
-             }).filter(Boolean);
+           return changesetEditor;
+         };

 
 

-             arr = utilArrayUniq(arr);
-             t[field.key] = arr.length ? arr.join(';') : undefined;
-           }
+         changesetEditor.changesetID = function (_) {
+           if (!arguments.length) return _changesetID;
+           if (_changesetID === _) return changesetEditor;
+           _changesetID = _;
+           _fieldsArr = null;
+           return changesetEditor;
+         };

 
 

-           dispatch$1.call('change', this, t);
-         }
+         return utilRebind(changesetEditor, dispatch, 'on');
+       }

 
 

-         function combo(selection) {
-           _container = selection.selectAll('.form-field-input-wrap').data([0]);
-           var type = _isMulti || _isSemi ? 'multicombo' : 'combo';
-           _container = _container.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + type).merge(_container);
+       function uiSectionChanges(context) {
+         var detected = utilDetect();
+         var _discardTags = {};
+         _mainFileFetcher.get('discarded').then(function (d) {
+           _discardTags = d;
+         })["catch"](function () {
+           /* ignore */
+         });
+         var section = uiSection('changes-list', context).label(function () {
+           var history = context.history();
+           var summary = history.difference().summary();
+           return _t('inspector.title_count', {
+             title: _t.html('commit.changes'),
+             count: summary.length
+           });
+         }).disclosureContent(renderDisclosureContent);

 
 

-           if (_isMulti || _isSemi) {
-             _container = _container.selectAll('.chiplist').data([0]);
-             var listClass = 'chiplist'; // Use a separate line for each value in the Destinations field
-             // to mimic highway exit signs
+         function renderDisclosureContent(selection) {
+           var history = context.history();
+           var summary = history.difference().summary();
+           var container = selection.selectAll('.commit-section').data([0]);
+           var containerEnter = container.enter().append('div').attr('class', 'commit-section');
+           containerEnter.append('ul').attr('class', 'changeset-list');
+           container = containerEnter.merge(container);
+           var items = container.select('ul').selectAll('li').data(summary);
+           var itemsEnter = items.enter().append('li').attr('class', 'change-item');
+           var buttons = itemsEnter.append('button').on('mouseover', mouseover).on('mouseout', mouseout).on('click', click);
+           buttons.each(function (d) {
+             select(this).call(svgIcon('#iD-icon-' + d.entity.geometry(d.graph), 'pre-text ' + d.changeType));
+           });
+           buttons.append('span').attr('class', 'change-type').html(function (d) {
+             return _t.html('commit.' + d.changeType) + ' ';
+           });
+           buttons.append('strong').attr('class', 'entity-type').html(function (d) {
+             var matched = _mainPresetIndex.match(d.entity, d.graph);
+             return matched && matched.name() || utilDisplayType(d.entity.id);
+           });
+           buttons.append('span').attr('class', 'entity-name').html(function (d) {
+             var name = utilDisplayName(d.entity) || '',
+                 string = '';

 
 

-             if (field.key === 'destination') {
-               listClass += ' full-line-chips';
+             if (name !== '') {
+               string += ':';

              }
 
              }
 

-             _container = _container.enter().append('ul').attr('class', listClass).on('click', function () {
-               window.setTimeout(function () {
-                 _input.node().focus();
-               }, 10);
-             }).merge(_container);
-             _inputWrap = _container.selectAll('.input-wrap').data([0]);
-             _inputWrap = _inputWrap.enter().append('li').attr('class', 'input-wrap').merge(_inputWrap);
-             _input = _inputWrap.selectAll('input').data([0]);
+             return string += ' ' + name;
+           });
+           items = itemsEnter.merge(items); // Download changeset link
+
+           var changeset = new osmChangeset().update({
+             id: undefined
+           });
+           var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
+           delete changeset.id; // Export without chnageset_id
+
+           var data = JXON.stringify(changeset.osmChangeJXON(changes));
+           var blob = new Blob([data], {
+             type: 'text/xml;charset=utf-8;'
+           });
+           var fileName = 'changes.osc';
+           var linkEnter = container.selectAll('.download-changes').data([0]).enter().append('a').attr('class', 'download-changes');
+
+           if (detected.download) {
+             // All except IE11 and Edge
+             linkEnter // download the data as a file
+             .attr('href', window.URL.createObjectURL(blob)).attr('download', fileName);

            } else {
            } else {

-             _input = _container.selectAll('input').data([0]);
+             // IE11 and Edge
+             linkEnter // open data uri in a new tab
+             .attr('target', '_blank').on('click.download', function () {
+               navigator.msSaveBlob(blob, fileName);
+             });

            }
 
            }
 

-           _input = _input.enter().append('input').attr('type', 'text').attr('id', field.domId).call(utilNoAuto).call(initCombo, selection).merge(_input);
+           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').html(_t.html('commit.download_changes'));

 
 

-           if (_isNetwork) {
-             var extent = combinedEntityExtent();
-             var countryCode = extent && iso1A2Code(extent.center());
-             _countryCode = countryCode && countryCode.toLowerCase();
+           function mouseover(d) {
+             if (d.entity) {
+               context.surface().selectAll(utilEntityOrMemberSelector([d.entity.id], context.graph())).classed('hover', true);
+             }

            }
 
            }
 

-           _input.on('change', change).on('blur', change);
+           function mouseout() {
+             context.surface().selectAll('.hover').classed('hover', false);
+           }

 
 

-           _input.on('keydown.field', function (d3_event) {
-             switch (d3_event.keyCode) {
-               case 13:
-                 // ↩ Return
-                 _input.node().blur(); // blurring also enters the value
+           function click(d3_event, change) {
+             if (change.changeType !== 'deleted') {
+               var entity = change.entity;
+               context.map().zoomToEase(entity);
+               context.surface().selectAll(utilEntityOrMemberSelector([entity.id], context.graph())).classed('hover', true);
+             }
+           }
+         }

 
 

+         return section;
+       }

 
 

-                 d3_event.stopPropagation();
-                 break;
-             }
+       function uiCommitWarnings(context) {
+         function commitWarnings(selection) {
+           var issuesBySeverity = context.validator().getIssuesBySeverity({
+             what: 'edited',
+             where: 'all',
+             includeDisabledRules: true

            });
 
            });
 

-           if (_isMulti || _isSemi) {
-             _combobox.on('accept', function () {
-               _input.node().blur();
+           for (var severity in issuesBySeverity) {
+             var issues = issuesBySeverity[severity];

 
 

-               _input.node().focus();
-             });
+             if (severity !== 'error') {
+               // exclude 'fixme' and similar - #8603
+               issues = issues.filter(function (issue) {
+                 return issue.type !== 'help_request';
+               });
+             }

 
 

-             _input.on('focus', function () {
-               _container.classed('active', true);
+             var section = severity + '-section';
+             var issueItem = severity + '-item';
+             var container = selection.selectAll('.' + section).data(issues.length ? [0] : []);
+             container.exit().remove();
+             var containerEnter = container.enter().append('div').attr('class', 'modal-section ' + section + ' fillL2');
+             containerEnter.append('h3').html(severity === 'warning' ? _t.html('commit.warnings') : _t.html('commit.errors'));
+             containerEnter.append('ul').attr('class', 'changeset-list');
+             container = containerEnter.merge(container);
+             var items = container.select('ul').selectAll('li').data(issues, function (d) {
+               return d.key;
+             });
+             items.exit().remove();
+             var itemsEnter = items.enter().append('li').attr('class', issueItem);
+             var buttons = itemsEnter.append('button').on('mouseover', function (d3_event, d) {
+               if (d.entityIds) {
+                 context.surface().selectAll(utilEntityOrMemberSelector(d.entityIds, context.graph())).classed('hover', true);
+               }
+             }).on('mouseout', function () {
+               context.surface().selectAll('.hover').classed('hover', false);
+             }).on('click', function (d3_event, d) {
+               context.validator().focusIssue(d);
+             });
+             buttons.call(svgIcon('#iD-icon-alert', 'pre-text'));
+             buttons.append('strong').attr('class', 'issue-message');
+             buttons.filter(function (d) {
+               return d.tooltip;
+             }).call(uiTooltip().title(function (d) {
+               return d.tooltip;
+             }).placement('top'));
+             items = itemsEnter.merge(items);
+             items.selectAll('.issue-message').html(function (d) {
+               return d.message(context);

              });
            }
          }
 
              });
            }
          }
 

-         combo.tags = function (tags) {
-           _tags = tags;
+         return commitWarnings;
+       }

 
 

-           if (_isMulti || _isSemi) {
-             _multiData = [];
-             var maxLength;
+       var readOnlyTags = [/^changesets_count$/, /^created_by$/, /^ideditor:/, /^imagery_used$/, /^host$/, /^locale$/, /^warnings:/, /^resolved:/, /^closed:note$/, /^closed:keepright$/, /^closed:improveosm:/, /^closed:osmose:/]; // treat most punctuation (except -, _, +, &) as hashtag delimiters - #4398
+       // from https://stackoverflow.com/a/25575009

 
 

-             if (_isMulti) {
-               // Build _multiData array containing keys already set..
-               for (var k in tags) {
-                 if (field.key && k.indexOf(field.key) !== 0 || field.keys.indexOf(k) === -1) continue;
-                 var v = tags[k];
-                 if (!v || typeof v === 'string' && v.toLowerCase() === 'no') continue;
-                 var suffix = field.key ? k.substring(field.key.length) : k;
+       var hashtagRegex = /(#[^\u2000-\u206F\u2E00-\u2E7F\s\\'!"#$%()*,.\/:;<=>?@\[\]^`{|}~]+)/g;
+       function uiCommit(context) {
+         var dispatch = dispatch$8('cancel');

 
 

-                 _multiData.push({
-                   key: k,
-                   value: displayValue(suffix),
-                   isMixed: Array.isArray(v)
-                 });
-               }
+         var _userDetails;

 
 

-               if (field.key) {
-                 // Set keys for form-field modified (needed for undo and reset buttons)..
-                 field.keys = _multiData.map(function (d) {
-                   return d.key;
-                 }); // limit the input length so it fits after prepending the key prefix
+         var _selection;

 
 

-                 maxLength = context.maxCharsForTagKey() - utilUnicodeCharsCount(field.key);
-               } else {
-                 maxLength = context.maxCharsForTagKey();
-               }
-             } else if (_isSemi) {
-               var allValues = [];
-               var commonValues;
+         var changesetEditor = uiChangesetEditor(context).on('change', changeTags);
+         var rawTagEditor = uiSectionRawTagEditor('changeset-tag-editor', context).on('change', changeTags).readOnlyTags(readOnlyTags);
+         var commitChanges = uiSectionChanges(context);
+         var commitWarnings = uiCommitWarnings(context);

 
 

-               if (Array.isArray(tags[field.key])) {
-                 tags[field.key].forEach(function (tagVal) {
-                   var thisVals = utilArrayUniq((tagVal || '').split(';')).filter(Boolean);
-                   allValues = allValues.concat(thisVals);
+         function commit(selection) {
+           _selection = selection; // Initialize changeset if one does not exist yet.

 
 

-                   if (!commonValues) {
-                     commonValues = thisVals;
-                   } else {
-                     commonValues = commonValues.filter(function (value) {
-                       return thisVals.includes(value);
-                     });
-                   }
-                 });
-                 allValues = utilArrayUniq(allValues).filter(Boolean);
-               } else {
-                 allValues = utilArrayUniq((tags[field.key] || '').split(';')).filter(Boolean);
-                 commonValues = allValues;
-               }
+           if (!context.changeset) initChangeset();
+           loadDerivedChangesetTags();
+           selection.call(render);
+         }

 
 

-               _multiData = allValues.map(function (v) {
-                 return {
-                   key: v,
-                   value: displayValue(v),
-                   isMixed: !commonValues.includes(v)
-                 };
-               });
-               var currLength = utilUnicodeCharsCount(commonValues.join(';')); // limit the input length to the remaining available characters
+         function initChangeset() {
+           // expire stored comment, hashtags, source after cutoff datetime - #3947 #4899
+           var commentDate = +corePreferences('commentDate') || 0;
+           var currDate = Date.now();
+           var cutoff = 2 * 86400 * 1000; // 2 days

 
 

-               maxLength = context.maxCharsForTagValue() - currLength;
+           if (commentDate > currDate || currDate - commentDate > cutoff) {
+             corePreferences('comment', null);
+             corePreferences('hashtags', null);
+             corePreferences('source', null);
+           } // load in explicitly-set values, if any

 
 

-               if (currLength > 0) {
-                 // account for the separator if a new value will be appended to existing
-                 maxLength -= 1;
-               }
-             } // a negative maxlength doesn't make sense

 
 

+           if (context.defaultChangesetComment()) {
+             corePreferences('comment', context.defaultChangesetComment());
+             corePreferences('commentDate', Date.now());
+           }

 
 

-             maxLength = Math.max(0, maxLength);
-             var allowDragAndDrop = _isSemi // only semiCombo values are ordered
-             && !Array.isArray(tags[field.key]); // Exclude existing multikeys from combo options..
+           if (context.defaultChangesetSource()) {
+             corePreferences('source', context.defaultChangesetSource());
+             corePreferences('commentDate', Date.now());
+           }

 
 

-             var available = objectDifference(_comboData, _multiData);
+           if (context.defaultChangesetHashtags()) {
+             corePreferences('hashtags', context.defaultChangesetHashtags());
+             corePreferences('commentDate', Date.now());
+           }

 
 

-             _combobox.data(available); // Hide 'Add' button if this field uses fixed set of
-             // translateable _optstrings and they're all currently used,
-             // or if the field is already at its character limit
+           var detected = utilDetect();
+           var tags = {
+             comment: corePreferences('comment') || '',
+             created_by: context.cleanTagValue('iD ' + context.version),
+             host: context.cleanTagValue(detected.host),
+             locale: context.cleanTagValue(_mainLocalizer.localeCode())
+           }; // call findHashtags initially - this will remove stored
+           // hashtags if any hashtags are found in the comment - #4304
+
+           findHashtags(tags, true);
+           var hashtags = corePreferences('hashtags');

 
 

+           if (hashtags) {
+             tags.hashtags = hashtags;
+           }

 
 

-             var hideAdd = _optstrings && !available.length || maxLength <= 0;
+           var source = corePreferences('source');

 
 

-             _container.selectAll('.chiplist .input-wrap').style('display', hideAdd ? 'none' : null); // Render chips
+           if (source) {
+             tags.source = source;
+           }

 
 

+           var photoOverlaysUsed = context.history().photoOverlaysUsed();

 
 

-             var chips = _container.selectAll('.chip').data(_multiData);
+           if (photoOverlaysUsed.length) {
+             var sources = (tags.source || '').split(';'); // include this tag for any photo layer

 
 

-             chips.exit().remove();
-             var enter = chips.enter().insert('li', '.input-wrap').attr('class', 'chip');
-             enter.append('span');
-             enter.append('a');
-             chips = chips.merge(enter).order().classed('draggable', allowDragAndDrop).classed('mixed', function (d) {
-               return d.isMixed;
-             }).attr('title', function (d) {
-               return d.isMixed ? _t('inspector.unshared_value_tooltip') : null;
-             });
+             if (sources.indexOf('streetlevel imagery') === -1) {
+               sources.push('streetlevel imagery');
+             } // add the photo overlays used during editing as sources

 
 

-             if (allowDragAndDrop) {
-               registerDragAndDrop(chips);
-             }

 
 

-             chips.select('span').html(function (d) {
-               return d.value;
+             photoOverlaysUsed.forEach(function (photoOverlay) {
+               if (sources.indexOf(photoOverlay) === -1) {
+                 sources.push(photoOverlay);
+               }

              });
              });

-             chips.select('a').attr('href', '#').on('click', removeMultikey).attr('class', 'remove').html('×');
-           } else {
-             var isMixed = Array.isArray(tags[field.key]);
-             var mixedValues = isMixed && tags[field.key].map(function (val) {
-               return displayValue(val);
-             }).filter(Boolean);
-             utilGetSetValue(_input, !isMixed ? displayValue(tags[field.key]) : '').attr('title', isMixed ? mixedValues.join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : _staticPlaceholder || '').classed('mixed', isMixed);
+             tags.source = context.cleanTagValue(sources.join(';'));

            }
            }

-         };

 
 

-         function registerDragAndDrop(selection) {
-           // allow drag and drop re-ordering of chips
-           var dragOrigin, targetIndex;
-           selection.call(d3_drag().on('start', function (d3_event) {
-             dragOrigin = {
-               x: d3_event.x,
-               y: d3_event.y
-             };
-             targetIndex = null;
-           }).on('drag', function (d3_event) {
-             var x = d3_event.x - dragOrigin.x,
-                 y = d3_event.y - dragOrigin.y;
-             if (!select(this).classed('dragging') && // don't display drag until dragging beyond a distance threshold
-             Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) <= 5) return;
-             var index = selection.nodes().indexOf(this);
-             select(this).classed('dragging', true);
-             targetIndex = null;
-             var targetIndexOffsetTop = null;
-             var draggedTagWidth = select(this).node().offsetWidth;
+           context.changeset = new osmChangeset({
+             tags: tags
+           });
+         } // Calculates read-only metadata tags based on the user's editing session and applies
+         // them to the changeset.

 
 

-             if (field.key === 'destination') {
-               // meaning tags are full width
-               _container.selectAll('.chip').style('transform', function (d2, index2) {
-                 var node = select(this).node();

 
 

-                 if (index === index2) {
-                   return 'translate(' + x + 'px, ' + y + 'px)'; // move the dragged tag up the order
-                 } else if (index2 > index && d3_event.y > node.offsetTop) {
-                   if (targetIndex === null || index2 > targetIndex) {
-                     targetIndex = index2;
-                   }
+         function loadDerivedChangesetTags() {
+           var osm = context.connection();
+           if (!osm) return;
+           var tags = Object.assign({}, context.changeset.tags); // shallow copy
+           // assign tags for imagery used

 
 

-                   return 'translateY(-100%)'; // move the dragged tag down the order
-                 } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
-                   if (targetIndex === null || index2 < targetIndex) {
-                     targetIndex = index2;
-                   }
+           var imageryUsed = context.cleanTagValue(context.history().imageryUsed().join(';'));
+           tags.imagery_used = imageryUsed || 'None'; // assign tags for closed issues and notes

 
 

-                   return 'translateY(100%)';
-                 }
+           var osmClosed = osm.getClosedIDs();
+           var itemType;

 
 

-                 return null;
-               });
-             } else {
-               _container.selectAll('.chip').each(function (d2, index2) {
-                 var node = select(this).node(); // check the cursor is in the bounding box
+           if (osmClosed.length) {
+             tags['closed:note'] = context.cleanTagValue(osmClosed.join(';'));
+           }
+
+           if (services.keepRight) {
+             var krClosed = services.keepRight.getClosedIDs();
+
+             if (krClosed.length) {
+               tags['closed:keepright'] = context.cleanTagValue(krClosed.join(';'));
+             }
+           }
+
+           if (services.improveOSM) {
+             var iOsmClosed = services.improveOSM.getClosedCounts();
+
+             for (itemType in iOsmClosed) {
+               tags['closed:improveosm:' + itemType] = context.cleanTagValue(iOsmClosed[itemType].toString());
+             }
+           }
+
+           if (services.osmose) {
+             var osmoseClosed = services.osmose.getClosedCounts();
+
+             for (itemType in osmoseClosed) {
+               tags['closed:osmose:' + itemType] = context.cleanTagValue(osmoseClosed[itemType].toString());
+             }
+           } // remove existing issue counts
+
+
+           for (var key in tags) {
+             if (key.match(/(^warnings:)|(^resolved:)/)) {
+               delete tags[key];
+             }
+           }

 
 

-                 if (index !== index2 && d3_event.x < node.offsetLeft + node.offsetWidth + 5 && d3_event.x > node.offsetLeft && d3_event.y < node.offsetTop + node.offsetHeight && d3_event.y > node.offsetTop) {
-                   targetIndex = index2;
-                   targetIndexOffsetTop = node.offsetTop;
-                 }
-               }).style('transform', function (d2, index2) {
-                 var node = select(this).node();
+           function addIssueCounts(issues, prefix) {
+             var issuesByType = utilArrayGroupBy(issues, 'type');

 
 

-                 if (index === index2) {
-                   return 'translate(' + x + 'px, ' + y + 'px)';
-                 } // only translate tags in the same row
+             for (var issueType in issuesByType) {
+               var issuesOfType = issuesByType[issueType];

 
 

+               if (issuesOfType[0].subtype) {
+                 var issuesBySubtype = utilArrayGroupBy(issuesOfType, 'subtype');

 
 

-                 if (node.offsetTop === targetIndexOffsetTop) {
-                   if (index2 < index && index2 >= targetIndex) {
-                     return 'translateX(' + draggedTagWidth + 'px)';
-                   } else if (index2 > index && index2 <= targetIndex) {
-                     return 'translateX(-' + draggedTagWidth + 'px)';
-                   }
+                 for (var issueSubtype in issuesBySubtype) {
+                   var issuesOfSubtype = issuesBySubtype[issueSubtype];
+                   tags[prefix + ':' + issueType + ':' + issueSubtype] = context.cleanTagValue(issuesOfSubtype.length.toString());

                  }
                  }

-
-                 return null;
-               });
-             }
-           }).on('end', function () {
-             if (!select(this).classed('dragging')) {
-               return;
+               } else {
+                 tags[prefix + ':' + issueType] = context.cleanTagValue(issuesOfType.length.toString());
+               }

              }
              }

+           } // add counts of warnings generated by the user's edits

 
 

-             var index = selection.nodes().indexOf(this);
-             select(this).classed('dragging', false);

 
 

-             _container.selectAll('.chip').style('transform', null);
+           var warnings = context.validator().getIssuesBySeverity({
+             what: 'edited',
+             where: 'all',
+             includeIgnored: true,
+             includeDisabledRules: true
+           }).warning.filter(function (issue) {
+             return issue.type !== 'help_request';
+           }); // exclude 'fixme' and similar - #8603

 
 

-             if (typeof targetIndex === 'number') {
-               var element = _multiData[index];
+           addIssueCounts(warnings, 'warnings'); // add counts of issues resolved by the user's edits

 
 

-               _multiData.splice(index, 1);
+           var resolvedIssues = context.validator().getResolvedIssues();
+           addIssueCounts(resolvedIssues, 'resolved');
+           context.changeset = context.changeset.update({
+             tags: tags
+           });
+         }

 
 

-               _multiData.splice(targetIndex, 0, element);
+         function render(selection) {
+           var osm = context.connection();
+           if (!osm) return;
+           var header = selection.selectAll('.header').data([0]);
+           var headerTitle = header.enter().append('div').attr('class', 'header fillL');
+           headerTitle.append('div').append('h3').html(_t.html('commit.title'));
+           headerTitle.append('button').attr('class', 'close').on('click', function () {
+             dispatch.call('cancel', this);
+           }).call(svgIcon('#iD-icon-close'));
+           var body = selection.selectAll('.body').data([0]);
+           body = body.enter().append('div').attr('class', 'body').merge(body); // Changeset Section

 
 

-               var t = {};
+           var changesetSection = body.selectAll('.changeset-editor').data([0]);
+           changesetSection = changesetSection.enter().append('div').attr('class', 'modal-section changeset-editor').merge(changesetSection);
+           changesetSection.call(changesetEditor.changesetID(context.changeset.id).tags(context.changeset.tags)); // Warnings

 
 

-               if (_multiData.length) {
-                 t[field.key] = _multiData.map(function (element) {
-                   return element.key;
-                 }).join(';');
-               } else {
-                 t[field.key] = undefined;
-               }
+           body.call(commitWarnings); // Upload Explanation

 
 

-               dispatch$1.call('change', this, t);
-             }
+           var saveSection = body.selectAll('.save-section').data([0]);
+           saveSection = saveSection.enter().append('div').attr('class', 'modal-section save-section fillL').merge(saveSection);
+           var prose = saveSection.selectAll('.commit-info').data([0]);

 
 

-             dragOrigin = undefined;
-             targetIndex = undefined;
-           }));
-         }
+           if (prose.enter().size()) {
+             // first time, make sure to update user details in prose
+             _userDetails = null;
+           }

 
 

-         combo.focus = function () {
-           _input.node().focus();
-         };
+           prose = prose.enter().append('p').attr('class', 'commit-info').html(_t.html('commit.upload_explanation')).merge(prose); // always check if this has changed, but only update prose.html()
+           // if needed, because it can trigger a style recalculation

 
 

-         combo.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return combo;
-         };
+           osm.userDetails(function (err, user) {
+             if (err) return;
+             if (_userDetails === user) return; // no change

 
 

-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
-         }
+             _userDetails = user;
+             var userLink = select(document.createElement('div'));

 
 

-         return utilRebind(combo, dispatch$1, 'on');
-       }
+             if (user.image_url) {
+               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
+             }

 
 

-       function uiFieldText(field, context) {
-         var dispatch$1 = dispatch('change');
-         var input = select(null);
-         var outlinkButton = select(null);
-         var _entityIDs = [];
+             userLink.append('a').attr('class', 'user-info').html(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
+             prose.html(_t.html('commit.upload_explanation_with_user', {
+               user: userLink.html()
+             }));
+           }); // Request Review

 
 

-         var _tags;
+           var requestReview = saveSection.selectAll('.request-review').data([0]); // Enter

 
 

-         var _phoneFormats = {};
+           var requestReviewEnter = requestReview.enter().append('div').attr('class', 'request-review');
+           var requestReviewDomId = utilUniqueDomId('commit-input-request-review');
+           var labelEnter = requestReviewEnter.append('label').attr('for', requestReviewDomId);

 
 

-         if (field.type === 'tel') {
-           _mainFileFetcher.get('phone_formats').then(function (d) {
-             _phoneFormats = d;
-             updatePhonePlaceholder();
-           })["catch"](function () {
-             /* ignore */
-           });
-         }
+           if (!labelEnter.empty()) {
+             labelEnter.call(uiTooltip().title(_t.html('commit.request_review_info')).placement('top'));
+           }

 
 

-         function i(selection) {
-           var entity = _entityIDs.length && context.hasEntity(_entityIDs[0]);
-           var preset = entity && _mainPresetIndex.match(entity, context.graph());
-           var isLocked = preset && preset.suggestion && field.id === 'brand';
-           field.locked(isLocked);
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           input = wrap.selectAll('input').data([0]);
-           input = input.enter().append('input').attr('type', field.type === 'identifier' ? 'text' : field.type).attr('id', field.domId).classed(field.type, true).call(utilNoAuto).merge(input);
-           input.classed('disabled', !!isLocked).attr('readonly', isLocked || null).on('input', change(true)).on('blur', change()).on('change', change());
+           labelEnter.append('input').attr('type', 'checkbox').attr('id', requestReviewDomId);
+           labelEnter.append('span').html(_t.html('commit.request_review')); // Update

 
 

-           if (field.type === 'tel') {
-             updatePhonePlaceholder();
-           } else if (field.type === 'number') {
-             var rtl = _mainLocalizer.textDirection() === 'rtl';
-             input.attr('type', 'text');
-             var inc = field.increment;
-             var buttons = wrap.selectAll('.increment, .decrement').data(rtl ? [inc, -inc] : [-inc, inc]);
-             buttons.enter().append('button').attr('class', function (d) {
-               var which = d > 0 ? 'increment' : 'decrement';
-               return 'form-field-button ' + which;
-             }).merge(buttons).on('click', function (d3_event, d) {
-               d3_event.preventDefault();
-               var raw_vals = input.node().value || '0';
-               var vals = raw_vals.split(';');
-               vals = vals.map(function (v) {
-                 var num = parseFloat(v.trim(), 10);
-                 return isFinite(num) ? clamped(num + d) : v.trim();
-               });
-               input.node().value = vals.join(';');
-               change()();
-             });
-           } else if (field.type === 'identifier' && field.urlFormat && field.pattern) {
-             input.attr('type', 'text');
-             outlinkButton = wrap.selectAll('.foreign-id-permalink').data([0]);
-             outlinkButton.enter().append('button').call(svgIcon('#iD-icon-out-link')).attr('class', 'form-field-button foreign-id-permalink').attr('title', function () {
-               var domainResults = /^https?:\/\/(.{1,}?)\//.exec(field.urlFormat);
+           requestReview = requestReview.merge(requestReviewEnter);
+           var requestReviewInput = requestReview.selectAll('input').property('checked', isReviewRequested(context.changeset.tags)).on('change', toggleRequestReview); // Buttons

 
 

-               if (domainResults.length >= 2 && domainResults[1]) {
-                 var domain = domainResults[1];
-                 return _t('icons.view_on', {
-                   domain: domain
-                 });
-               }
+           var buttonSection = saveSection.selectAll('.buttons').data([0]); // enter

 
 

-               return '';
-             }).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               var value = validIdentifierValueForLink();
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons fillL');
+           buttonEnter.append('button').attr('class', 'secondary-action button cancel-button').append('span').attr('class', 'label').html(_t.html('commit.cancel'));
+           var uploadButton = buttonEnter.append('button').attr('class', 'action button save-button');
+           uploadButton.append('span').attr('class', 'label').html(_t.html('commit.save'));
+           var uploadBlockerTooltipText = getUploadBlockerMessage(); // update

 
 

-               if (value) {
-                 var url = field.urlFormat.replace(/{value}/, encodeURIComponent(value));
-                 window.open(url, '_blank');
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.selectAll('.cancel-button').on('click.cancel', function () {
+             dispatch.call('cancel', this);
+           });
+           buttonSection.selectAll('.save-button').classed('disabled', uploadBlockerTooltipText !== null).on('click.save', function () {
+             if (!select(this).classed('disabled')) {
+               this.blur(); // avoid keeping focus on the button - #4641
+
+               for (var key in context.changeset.tags) {
+                 // remove any empty keys before upload
+                 if (!key) delete context.changeset.tags[key];

                }
                }

-             }).merge(outlinkButton);
-           }
-         }

 
 

-         function updatePhonePlaceholder() {
-           if (input.empty() || !Object.keys(_phoneFormats).length) return;
-           var extent = combinedEntityExtent();
-           var countryCode = extent && iso1A2Code(extent.center());
+               context.uploader().save(context.changeset);
+             }
+           }); // remove any existing tooltip

 
 

-           var format = countryCode && _phoneFormats[countryCode.toLowerCase()];
+           uiTooltip().destroyAny(buttonSection.selectAll('.save-button'));

 
 

-           if (format) input.attr('placeholder', format);
-         }
+           if (uploadBlockerTooltipText) {
+             buttonSection.selectAll('.save-button').call(uiTooltip().title(uploadBlockerTooltipText).placement('top'));
+           } // Raw Tag Editor

 
 

-         function validIdentifierValueForLink() {
-           if (field.type === 'identifier' && field.pattern) {
-             var value = utilGetSetValue(input).trim().split(';')[0];
-             return value && value.match(new RegExp(field.pattern));
-           }

 
 

-           return null;
-         } // clamp number to min/max
+           var tagSection = body.selectAll('.tag-section.raw-tag-editor').data([0]);
+           tagSection = tagSection.enter().append('div').attr('class', 'modal-section tag-section raw-tag-editor').merge(tagSection);
+           tagSection.call(rawTagEditor.tags(Object.assign({}, context.changeset.tags)) // shallow copy
+           .render);
+           var changesSection = body.selectAll('.commit-changes-section').data([0]);
+           changesSection = changesSection.enter().append('div').attr('class', 'modal-section commit-changes-section').merge(changesSection); // Change summary

 
 

+           changesSection.call(commitChanges.render);

 
 

-         function clamped(num) {
-           if (field.minValue !== undefined) {
-             num = Math.max(num, field.minValue);
+           function toggleRequestReview() {
+             var rr = requestReviewInput.property('checked');
+             updateChangeset({
+               review_requested: rr ? 'yes' : undefined
+             });
+             tagSection.call(rawTagEditor.tags(Object.assign({}, context.changeset.tags)) // shallow copy
+             .render);

            }
            }

+         }

 
 

-           if (field.maxValue !== undefined) {
-             num = Math.min(num, field.maxValue);
+         function getUploadBlockerMessage() {
+           var errors = context.validator().getIssuesBySeverity({
+             what: 'edited',
+             where: 'all'
+           }).error;
+
+           if (errors.length) {
+             return _t('commit.outstanding_errors_message', {
+               count: errors.length
+             });
+           } else {
+             var hasChangesetComment = context.changeset && context.changeset.tags.comment && context.changeset.tags.comment.trim().length;
+
+             if (!hasChangesetComment) {
+               return _t('commit.comment_needed_message');
+             }

            }
 
            }
 

-           return num;
+           return null;

          }
 
          }
 

-         function change(onInput) {
-           return function () {
-             var t = {};
-             var val = utilGetSetValue(input);
-             if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
-
-             if (!val && Array.isArray(_tags[field.key])) return;
+         function changeTags(_, changed, onInput) {
+           if (changed.hasOwnProperty('comment')) {
+             if (changed.comment === undefined) {
+               changed.comment = '';
+             }

 
              if (!onInput) {
 
              if (!onInput) {

-               if (field.type === 'number' && val) {
-                 var vals = val.split(';');
-                 vals = vals.map(function (v) {
-                   var num = parseFloat(v.trim(), 10);
-                   return isFinite(num) ? clamped(num) : v.trim();
-                 });
-                 val = vals.join(';');
-               }
-
-               utilGetSetValue(input, val);
+               corePreferences('comment', changed.comment);
+               corePreferences('commentDate', Date.now());

              }
              }

+           }

 
 

-             t[field.key] = val || undefined;
-             dispatch$1.call('change', this, t, onInput);
-           };
-         }
+           if (changed.hasOwnProperty('source')) {
+             if (changed.source === undefined) {
+               corePreferences('source', null);
+             } else if (!onInput) {
+               corePreferences('source', changed.source);
+               corePreferences('commentDate', Date.now());
+             }
+           } // no need to update `prefs` for `hashtags` here since it's done in `updateChangeset`

 
 

-         i.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return i;
-         };

 
 

-         i.tags = function (tags) {
-           _tags = tags;
-           var isMixed = Array.isArray(tags[field.key]);
-           utilGetSetValue(input, !isMixed && tags[field.key] ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder() || _t('inspector.unknown')).classed('mixed', isMixed);
+           updateChangeset(changed, onInput);

 
 

-           if (outlinkButton && !outlinkButton.empty()) {
-             var disabled = !validIdentifierValueForLink();
-             outlinkButton.classed('disabled', disabled);
+           if (_selection) {
+             _selection.call(render);

            }
            }

-         };
-
-         i.focus = function () {
-           var node = input.node();
-           if (node) node.focus();
-         };
-
-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());

          }
 
          }
 

-         return utilRebind(i, dispatch$1, 'on');
-       }
+         function findHashtags(tags, commentOnly) {
+           var detectedHashtags = commentHashtags();

 
 

-       function uiFieldAccess(field, context) {
-         var dispatch$1 = dispatch('change');
-         var items = select(null);
+           if (detectedHashtags.length) {
+             // always remove stored hashtags if there are hashtags in the comment - #4304
+             corePreferences('hashtags', null);
+           }

 
 

-         var _tags;
+           if (!detectedHashtags.length || !commentOnly) {
+             detectedHashtags = detectedHashtags.concat(hashtagHashtags());
+           }

 
 

-         function access(selection) {
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           var list = wrap.selectAll('ul').data([0]);
-           list = list.enter().append('ul').attr('class', 'rows').merge(list);
-           items = list.selectAll('li').data(field.keys); // Enter
+           var allLowerCase = new Set();
+           return detectedHashtags.filter(function (hashtag) {
+             // Compare tags as lowercase strings, but keep original case tags
+             var lowerCase = hashtag.toLowerCase();

 
 

-           var enter = items.enter().append('li').attr('class', function (d) {
-             return 'labeled-input preset-access-' + d;
-           });
-           enter.append('span').attr('class', 'label preset-label-access').attr('for', function (d) {
-             return 'preset-input-access-' + d;
-           }).html(function (d) {
-             return field.t.html('types.' + d);
-           });
-           enter.append('div').attr('class', 'preset-input-access-wrap').append('input').attr('type', 'text').attr('class', function (d) {
-             return 'preset-input-access preset-input-access-' + d;
-           }).call(utilNoAuto).each(function (d) {
-             select(this).call(uiCombobox(context, 'access-' + d).data(access.options(d)));
-           }); // Update
+             if (!allLowerCase.has(lowerCase)) {
+               allLowerCase.add(lowerCase);
+               return true;
+             }

 
 

-           items = items.merge(enter);
-           wrap.selectAll('.preset-input-access').on('change', change).on('blur', change);
-         }
+             return false;
+           }); // Extract hashtags from `comment`

 
 

-         function change(d3_event, d) {
-           var tag = {};
-           var value = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string
+           function commentHashtags() {
+             var matches = (tags.comment || '').replace(/http\S*/g, '') // drop anything that looks like a URL - #4289
+             .match(hashtagRegex);
+             return matches || [];
+           } // Extract and clean hashtags from `hashtags`

 
 

-           if (!value && typeof _tags[d] !== 'string') return;
-           tag[d] = value || undefined;
-           dispatch$1.call('change', this, tag);
-         }

 
 

-         access.options = function (type) {
-           var options = ['no', 'permissive', 'private', 'permit', 'destination'];
+           function hashtagHashtags() {
+             var matches = (tags.hashtags || '').split(/[,;\s]+/).map(function (s) {
+               if (s[0] !== '#') {
+                 s = '#' + s;
+               } // prepend '#'

 
 

-           if (type !== 'access') {
-             options.unshift('yes');
-             options.push('designated');

 
 

-             if (type === 'bicycle') {
-               options.push('dismount');
-             }
+               var matched = s.match(hashtagRegex);
+               return matched && matched[0];
+             }).filter(Boolean); // exclude falsy
+
+             return matches || [];

            }
            }

+         }

 
 

-           return options.map(function (option) {
-             return {
-               title: field.t('options.' + option + '.description'),
-               value: option
-             };
-           });
-         };
+         function isReviewRequested(tags) {
+           var rr = tags.review_requested;
+           if (rr === undefined) return false;
+           rr = rr.trim().toLowerCase();
+           return !(rr === '' || rr === 'no');
+         }

 
 

-         var placeholdersByHighway = {
-           footway: {
-             foot: 'designated',
-             motor_vehicle: 'no'
-           },
-           steps: {
-             foot: 'yes',
-             motor_vehicle: 'no',
-             bicycle: 'no',
-             horse: 'no'
-           },
-           pedestrian: {
-             foot: 'yes',
-             motor_vehicle: 'no'
-           },
-           cycleway: {
-             motor_vehicle: 'no',
-             bicycle: 'designated'
-           },
-           bridleway: {
-             motor_vehicle: 'no',
-             horse: 'designated'
-           },
-           path: {
-             foot: 'yes',
-             motor_vehicle: 'no',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           motorway: {
-             foot: 'no',
-             motor_vehicle: 'yes',
-             bicycle: 'no',
-             horse: 'no'
-           },
-           trunk: {
-             motor_vehicle: 'yes'
-           },
-           primary: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           secondary: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           tertiary: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           residential: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           unclassified: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           service: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           motorway_link: {
-             foot: 'no',
-             motor_vehicle: 'yes',
-             bicycle: 'no',
-             horse: 'no'
-           },
-           trunk_link: {
-             motor_vehicle: 'yes'
-           },
-           primary_link: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           secondary_link: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           },
-           tertiary_link: {
-             foot: 'yes',
-             motor_vehicle: 'yes',
-             bicycle: 'yes',
-             horse: 'yes'
-           }
-         };
+         function updateChangeset(changed, onInput) {
+           var tags = Object.assign({}, context.changeset.tags); // shallow copy

 
 

-         access.tags = function (tags) {
-           _tags = tags;
-           utilGetSetValue(items.selectAll('.preset-input-access'), function (d) {
-             return typeof tags[d] === 'string' ? tags[d] : '';
-           }).classed('mixed', function (d) {
-             return tags[d] && Array.isArray(tags[d]);
-           }).attr('title', function (d) {
-             return tags[d] && Array.isArray(tags[d]) && tags[d].filter(Boolean).join('\n');
-           }).attr('placeholder', function (d) {
-             if (tags[d] && Array.isArray(tags[d])) {
-               return _t('inspector.multiple_values');
-             }
+           Object.keys(changed).forEach(function (k) {
+             var v = changed[k];
+             k = context.cleanTagKey(k);
+             if (readOnlyTags.indexOf(k) !== -1) return;

 
 

-             if (d === 'access') {
-               return 'yes';
+             if (v === undefined) {
+               delete tags[k];
+             } else if (onInput) {
+               tags[k] = v;
+             } else {
+               tags[k] = context.cleanTagValue(v);

              }
              }

+           });

 
 

-             if (tags.access && typeof tags.access === 'string') {
-               return tags.access;
+           if (!onInput) {
+             // when changing the comment, override hashtags with any found in comment.
+             var commentOnly = changed.hasOwnProperty('comment') && changed.comment !== '';
+             var arr = findHashtags(tags, commentOnly);
+
+             if (arr.length) {
+               tags.hashtags = context.cleanTagValue(arr.join(';'));
+               corePreferences('hashtags', tags.hashtags);
+             } else {
+               delete tags.hashtags;
+               corePreferences('hashtags', null);

              }
              }

+           } // always update userdetails, just in case user reauthenticates as someone else

 
 

-             if (tags.highway) {
-               if (typeof tags.highway === 'string') {
-                 if (placeholdersByHighway[tags.highway] && placeholdersByHighway[tags.highway][d]) {
-                   return placeholdersByHighway[tags.highway][d];
-                 }
-               } else {
-                 var impliedAccesses = tags.highway.filter(Boolean).map(function (highwayVal) {
-                   return placeholdersByHighway[highwayVal] && placeholdersByHighway[highwayVal][d];
-                 }).filter(Boolean);

 
 

-                 if (impliedAccesses.length === tags.highway.length && new Set(impliedAccesses).size === 1) {
-                   // if all the highway values have the same implied access for this type then use that
-                   return impliedAccesses[0];
-                 }
+           if (_userDetails && _userDetails.changesets_count !== undefined) {
+             var changesetsCount = parseInt(_userDetails.changesets_count, 10) + 1; // #4283
+
+             tags.changesets_count = String(changesetsCount); // first 100 edits - new user
+
+             if (changesetsCount <= 100) {
+               var s;
+               s = corePreferences('walkthrough_completed');
+
+               if (s) {
+                 tags['ideditor:walkthrough_completed'] = s;
+               }
+
+               s = corePreferences('walkthrough_progress');
+
+               if (s) {
+                 tags['ideditor:walkthrough_progress'] = s;
+               }
+
+               s = corePreferences('walkthrough_started');
+
+               if (s) {
+                 tags['ideditor:walkthrough_started'] = s;

                }
              }
                }
              }

+           } else {
+             delete tags.changesets_count;
+           }

 
 

-             return field.placeholder();
-           });
-         };
+           if (!fastDeepEqual(context.changeset.tags, tags)) {
+             context.changeset = context.changeset.update({
+               tags: tags
+             });
+           }
+         }

 
 

-         access.focus = function () {
-           items.selectAll('.preset-input-access').node().focus();
+         commit.reset = function () {
+           context.changeset = null;

          };
 
          };
 

-         return utilRebind(access, dispatch$1, 'on');
+         return utilRebind(commit, dispatch, 'on');

        }
 
        }
 

-       function uiFieldAddress(field, context) {
-         var dispatch$1 = dispatch('change');
-
-         var _selection = select(null);
-
-         var _wrap = select(null);
+       // for punction see https://stackoverflow.com/a/21224179

 
 

-         var addrField = _mainPresetIndex.field('address'); // needed for placeholder strings
+       function simplify(str) {
+         if (typeof str !== 'string') return '';
+         return diacritics.remove(str.replace(/&/g, 'and').replace(/İ/ig, 'i').replace(/[\s\-=_!"#%'*{},.\/:;?\(\)\[\]@\\$\^*+<>«»~`’\u00a1\u00a7\u00b6\u00b7\u00bf\u037e\u0387\u055a-\u055f\u0589\u05c0\u05c3\u05c6\u05f3\u05f4\u0609\u060a\u060c\u060d\u061b\u061e\u061f\u066a-\u066d\u06d4\u0700-\u070d\u07f7-\u07f9\u0830-\u083e\u085e\u0964\u0965\u0970\u0af0\u0df4\u0e4f\u0e5a\u0e5b\u0f04-\u0f12\u0f14\u0f85\u0fd0-\u0fd4\u0fd9\u0fda\u104a-\u104f\u10fb\u1360-\u1368\u166d\u166e\u16eb-\u16ed\u1735\u1736\u17d4-\u17d6\u17d8-\u17da\u1800-\u1805\u1807-\u180a\u1944\u1945\u1a1e\u1a1f\u1aa0-\u1aa6\u1aa8-\u1aad\u1b5a-\u1b60\u1bfc-\u1bff\u1c3b-\u1c3f\u1c7e\u1c7f\u1cc0-\u1cc7\u1cd3\u200b-\u200f\u2016\u2017\u2020-\u2027\u2030-\u2038\u203b-\u203e\u2041-\u2043\u2047-\u2051\u2053\u2055-\u205e\u2cf9-\u2cfc\u2cfe\u2cff\u2d70\u2e00\u2e01\u2e06-\u2e08\u2e0b\u2e0e-\u2e16\u2e18\u2e19\u2e1b\u2e1e\u2e1f\u2e2a-\u2e2e\u2e30-\u2e39\u3001-\u3003\u303d\u30fb\ua4fe\ua4ff\ua60d-\ua60f\ua673\ua67e\ua6f2-\ua6f7\ua874-\ua877\ua8ce\ua8cf\ua8f8-\ua8fa\ua92e\ua92f\ua95f\ua9c1-\ua9cd\ua9de\ua9df\uaa5c-\uaa5f\uaade\uaadf\uaaf0\uaaf1\uabeb\ufe10-\ufe16\ufe19\ufe30\ufe45\ufe46\ufe49-\ufe4c\ufe50-\ufe52\ufe54-\ufe57\ufe5f-\ufe61\ufe68\ufe6a\ufe6b\ufeff\uff01-\uff03\uff05-\uff07\uff0a\uff0c\uff0e\uff0f\uff1a\uff1b\uff1f\uff20\uff3c\uff61\uff64\uff65]+/g, '').toLowerCase());
+       }

 
 

-         var _entityIDs = [];
+       // `resolveStrings`
+       // Resolves the text strings for a given community index item
+       //
+       // Arguments
+       //   `item`:  Object containing the community index item
+       //   `defaults`: Object containing the community index default strings
+       //   `localizerFn?`: optional function we will call to do the localization.
+       //      This function should be like the iD `t()` function that
+       //      accepts a `stringID` and returns a localized string
+       //
+       // Returns
+       //   An Object containing all the resolved strings:
+       //   {
+       //     name:                     'talk-ru Mailing List',
+       //     url:                      'https://lists.openstreetmap.org/listinfo/talk-ru',
+       //     signupUrl:                'https://example.url/signup',
+       //     description:              'A one line description',
+       //     extendedDescription:      'Extended description',
+       //     nameHTML:                 '<a href="the url">the name</a>',
+       //     urlHTML:                  '<a href="the url">the url</a>',
+       //     signupUrlHTML:            '<a href="the signupUrl">the signupUrl</a>',
+       //     descriptionHTML:          the description, with urls and signupUrls linkified,
+       //     extendedDescriptionHTML:  the extendedDescription with urls and signupUrls linkified
+       //   }
+       //

 
 

-         var _tags;
+       function resolveStrings(item, defaults, localizerFn) {
+         var itemStrings = Object.assign({}, item.strings); // shallow clone

 
 

-         var _countryCode;
+         var defaultStrings = Object.assign({}, defaults[item.type]); // shallow clone

 
 

-         var _addressFormats = [{
-           format: [['housenumber', 'street'], ['city', 'postcode']]
-         }];
-         _mainFileFetcher.get('address_formats').then(function (d) {
-           _addressFormats = d;
+         var anyToken = new RegExp(/(\{\w+\})/, 'gi'); // Pre-localize the item and default strings

 
 

-           if (!_selection.empty()) {
-             _selection.call(address);
+         if (localizerFn) {
+           if (itemStrings.community) {
+             var communityID = simplify(itemStrings.community);
+             itemStrings.community = localizerFn("_communities.".concat(communityID));

            }
            }

-         })["catch"](function () {
-           /* ignore */
-         });

 
 

-         function getNearStreets() {
-           var extent = combinedEntityExtent();
-           var l = extent.center();
-           var box = geoExtent(l).padByMeters(200);
-           var streets = context.history().intersects(box).filter(isAddressable).map(function (d) {
-             var loc = context.projection([(extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2]);
-             var choice = geoChooseEdge(context.graph().childNodes(d), loc, context.projection);
-             return {
-               title: d.tags.name,
-               value: d.tags.name,
-               dist: choice.distance
-             };
-           }).sort(function (a, b) {
-             return a.dist - b.dist;
+           ['name', 'description', 'extendedDescription'].forEach(function (prop) {
+             if (defaultStrings[prop]) defaultStrings[prop] = localizerFn("_defaults.".concat(item.type, ".").concat(prop));
+             if (itemStrings[prop]) itemStrings[prop] = localizerFn("".concat(item.id, ".").concat(prop));

            });
            });

-           return utilArrayUniqBy(streets, 'value');
+         }

 
 

-           function isAddressable(d) {
-             return d.tags.highway && d.tags.name && d.type === 'way';
-           }
+         var replacements = {
+           account: item.account,
+           community: itemStrings.community,
+           signupUrl: itemStrings.signupUrl,
+           url: itemStrings.url
+         }; // Resolve URLs first (which may refer to {account})
+
+         if (!replacements.signupUrl) {
+           replacements.signupUrl = resolve(itemStrings.signupUrl || defaultStrings.signupUrl);

          }
 
          }
 

-         function getNearCities() {
-           var extent = combinedEntityExtent();
-           var l = extent.center();
-           var box = geoExtent(l).padByMeters(200);
-           var cities = context.history().intersects(box).filter(isAddressable).map(function (d) {
-             return {
-               title: d.tags['addr:city'] || d.tags.name,
-               value: d.tags['addr:city'] || d.tags.name,
-               dist: geoSphericalDistance(d.extent(context.graph()).center(), l)
-             };
-           }).sort(function (a, b) {
-             return a.dist - b.dist;
-           });
-           return utilArrayUniqBy(cities, 'value');
+         if (!replacements.url) {
+           replacements.url = resolve(itemStrings.url || defaultStrings.url);
+         }

 
 

-           function isAddressable(d) {
-             if (d.tags.name) {
-               if (d.tags.admin_level === '8' && d.tags.boundary === 'administrative') return true;
-               if (d.tags.border_type === 'city') return true;
-               if (d.tags.place === 'city' || d.tags.place === 'town' || d.tags.place === 'village') return true;
+         var resolved = {
+           name: resolve(itemStrings.name || defaultStrings.name),
+           url: resolve(itemStrings.url || defaultStrings.url),
+           signupUrl: resolve(itemStrings.signupUrl || defaultStrings.signupUrl),
+           description: resolve(itemStrings.description || defaultStrings.description),
+           extendedDescription: resolve(itemStrings.extendedDescription || defaultStrings.extendedDescription)
+         }; // Generate linkified strings
+
+         resolved.nameHTML = linkify(resolved.url, resolved.name);
+         resolved.urlHTML = linkify(resolved.url);
+         resolved.signupUrlHTML = linkify(resolved.signupUrl);
+         resolved.descriptionHTML = resolve(itemStrings.description || defaultStrings.description, true);
+         resolved.extendedDescriptionHTML = resolve(itemStrings.extendedDescription || defaultStrings.extendedDescription, true);
+         return resolved;
+
+         function resolve(s, addLinks) {
+           if (!s) return undefined;
+           var result = s;
+
+           for (var key in replacements) {
+             var token = "{".concat(key, "}");
+             var regex = new RegExp(token, 'g');
+
+             if (regex.test(result)) {
+               var replacement = replacements[key];
+
+               if (!replacement) {
+                 throw new Error("Cannot resolve token: ".concat(token));
+               } else {
+                 if (addLinks && (key === 'signupUrl' || key === 'url')) {
+                   replacement = linkify(replacement);
+                 }
+
+                 result = result.replace(regex, replacement);
+               }

              }
              }

+           } // There shouldn't be any leftover tokens in a resolved string

 
 

-             if (d.tags['addr:city']) return true;
-             return false;
+
+           var leftovers = result.match(anyToken);
+
+           if (leftovers) {
+             throw new Error("Cannot resolve tokens: ".concat(leftovers));
+           } // Linkify subreddits like `/r/openstreetmap`
+           // https://github.com/osmlab/osm-community-index/issues/82
+           // https://github.com/openstreetmap/iD/issues/4997
+
+
+           if (addLinks && item.type === 'reddit') {
+             result = result.replace(/(\/r\/\w+\/*)/i, function (match) {
+               return linkify(resolved.url, match);
+             });

            }
            }

+
+           return result;

          }
 
          }
 

-         function getNearValues(key) {
-           var extent = combinedEntityExtent();
-           var l = extent.center();
-           var box = geoExtent(l).padByMeters(200);
-           var results = context.history().intersects(box).filter(function hasTag(d) {
-             return _entityIDs.indexOf(d.id) === -1 && d.tags[key];
-           }).map(function (d) {
-             return {
-               title: d.tags[key],
-               value: d.tags[key],
-               dist: geoSphericalDistance(d.extent(context.graph()).center(), l)
-             };
-           }).sort(function (a, b) {
-             return a.dist - b.dist;
-           });
-           return utilArrayUniqBy(results, 'value');
+         function linkify(url, text) {
+           if (!url) return undefined;
+           text = text || url;
+           return "<a target=\"_blank\" href=\"".concat(url, "\">").concat(text, "</a>");

          }
          }

+       }

 
 

-         function updateForCountryCode() {
-           if (!_countryCode) return;
-           var addressFormat;
+       var _oci = null;
+       function uiSuccess(context) {
+         var MAXEVENTS = 2;
+         var dispatch = dispatch$8('cancel');

 
 

-           for (var i = 0; i < _addressFormats.length; i++) {
-             var format = _addressFormats[i];
+         var _changeset;

 
 

-             if (!format.countryCodes) {
-               addressFormat = format; // choose the default format, keep going
-             } else if (format.countryCodes.indexOf(_countryCode) !== -1) {
-               addressFormat = format; // choose the country format, stop here
+         var _location;

 
 

-               break;
+         ensureOSMCommunityIndex(); // start fetching the data
+
+         function ensureOSMCommunityIndex() {
+           var data = _mainFileFetcher;
+           return Promise.all([data.get('oci_features'), data.get('oci_resources'), data.get('oci_defaults')]).then(function (vals) {
+             if (_oci) return _oci; // Merge Custom Features
+
+             if (vals[0] && Array.isArray(vals[0].features)) {
+               _mainLocations.mergeCustomGeoJSON(vals[0]);

              }
              }

-           }

 
 

-           var dropdowns = addressFormat.dropdowns || ['city', 'county', 'country', 'district', 'hamlet', 'neighbourhood', 'place', 'postcode', 'province', 'quarter', 'state', 'street', 'subdistrict', 'suburb'];
-           var widths = addressFormat.widths || {
-             housenumber: 1 / 3,
-             street: 2 / 3,
-             city: 2 / 3,
-             state: 1 / 4,
-             postcode: 1 / 3
-           };
+             var ociResources = Object.values(vals[1].resources);

 
 

-           function row(r) {
-             // Normalize widths.
-             var total = r.reduce(function (sum, key) {
-               return sum + (widths[key] || 0.5);
-             }, 0);
-             return r.map(function (key) {
-               return {
-                 id: key,
-                 width: (widths[key] || 0.5) / total
+             if (ociResources.length) {
+               // Resolve all locationSet features.
+               return _mainLocations.mergeLocationSets(ociResources).then(function () {
+                 _oci = {
+                   resources: ociResources,
+                   defaults: vals[2].defaults
+                 };
+                 return _oci;
+               });
+             } else {
+               _oci = {
+                 resources: [],
+                 // no resources?
+                 defaults: vals[2].defaults

                };
                };

-             });
-           }
-
-           var rows = _wrap.selectAll('.addr-row').data(addressFormat.format, function (d) {
-             return d.toString();
+               return _oci;
+             }

            });
            });

+         } // string-to-date parsing in JavaScript is weird

 
 

-           rows.exit().remove();
-           rows.enter().append('div').attr('class', 'addr-row').selectAll('input').data(row).enter().append('input').property('type', 'text').call(updatePlaceholder).attr('class', function (d) {
-             return 'addr-' + d.id;
-           }).call(utilNoAuto).each(addDropdown).style('width', function (d) {
-             return d.width * 100 + '%';
-           });

 
 

-           function addDropdown(d) {
-             if (dropdowns.indexOf(d.id) === -1) return; // not a dropdown
+         function parseEventDate(when) {
+           if (!when) return;
+           var raw = when.trim();
+           if (!raw) return;

 
 

-             var nearValues = d.id === 'street' ? getNearStreets : d.id === 'city' ? getNearCities : getNearValues;
-             select(this).call(uiCombobox(context, 'address-' + d.id).minItems(1).caseSensitive(true).fetcher(function (value, callback) {
-               callback(nearValues('addr:' + d.id));
-             }));
+           if (!/Z$/.test(raw)) {
+             // if no trailing 'Z', add one
+             raw += 'Z'; // this forces date to be parsed as a UTC date

            }
 
            }
 

-           _wrap.selectAll('input').on('blur', change()).on('change', change());
+           var parsed = new Date(raw);
+           return new Date(parsed.toUTCString().substr(0, 25)); // convert to local timezone
+         }

 
 

-           _wrap.selectAll('input:not(.combobox-input)').on('input', change(true));
+         function success(selection) {
+           var header = selection.append('div').attr('class', 'header fillL');
+           header.append('h3').html(_t.html('success.just_edited'));
+           header.append('button').attr('class', 'close').on('click', function () {
+             return dispatch.call('cancel');
+           }).call(svgIcon('#iD-icon-close'));
+           var body = selection.append('div').attr('class', 'body save-success fillL');
+           var summary = body.append('div').attr('class', 'save-summary');
+           summary.append('h3').html(_t.html('success.thank_you' + (_location ? '_location' : ''), {
+             where: _location
+           }));
+           summary.append('p').html(_t.html('success.help_html')).append('a').attr('class', 'link-out').attr('target', '_blank').attr('href', _t('success.help_link_url')).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('success.help_link_text'));
+           var osm = context.connection();
+           if (!osm) return;
+           var changesetURL = osm.changesetURL(_changeset.id);
+           var table = summary.append('table').attr('class', 'summary-table');
+           var row = table.append('tr').attr('class', 'summary-row');
+           row.append('td').attr('class', 'cell-icon summary-icon').append('a').attr('target', '_blank').attr('href', changesetURL).append('svg').attr('class', 'logo-small').append('use').attr('xlink:href', '#iD-logo-osm');
+           var summaryDetail = row.append('td').attr('class', 'cell-detail summary-detail');
+           summaryDetail.append('a').attr('class', 'cell-detail summary-view-on-osm').attr('target', '_blank').attr('href', changesetURL).html(_t.html('success.view_on_osm'));
+           summaryDetail.append('div').html(_t.html('success.changeset_id', {
+             changeset_id: "<a href=\"".concat(changesetURL, "\" target=\"_blank\">").concat(_changeset.id, "</a>")
+           })); // Get OSM community index features intersecting the map..

 
 

-           if (_tags) updateTags(_tags);
+           ensureOSMCommunityIndex().then(function (oci) {
+             var loc = context.map().center();
+             var validLocations = _mainLocations.locationsAt(loc); // Gather the communities
+
+             var communities = [];
+             oci.resources.forEach(function (resource) {
+               var area = validLocations[resource.locationSetID];
+               if (!area) return; // Resolve strings
+
+               var localizer = function localizer(stringID) {
+                 return _t.html("community.".concat(stringID));
+               };
+
+               resource.resolved = resolveStrings(resource, oci.defaults, localizer);
+               communities.push({
+                 area: area,
+                 order: resource.order || 0,
+                 resource: resource
+               });
+             }); // sort communities by feature area ascending, community order descending
+
+             communities.sort(function (a, b) {
+               return a.area - b.area || b.order - a.order;
+             });
+             body.call(showCommunityLinks, communities.map(function (c) {
+               return c.resource;
+             }));
+           });

          }
 
          }
 

-         function address(selection) {
-           _selection = selection;
-           _wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           _wrap = _wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(_wrap);
-           var extent = combinedEntityExtent();
+         function showCommunityLinks(selection, resources) {
+           var communityLinks = selection.append('div').attr('class', 'save-communityLinks');
+           communityLinks.append('h3').html(_t.html('success.like_osm'));
+           var table = communityLinks.append('table').attr('class', 'community-table');
+           var row = table.selectAll('.community-row').data(resources);
+           var rowEnter = row.enter().append('tr').attr('class', 'community-row');
+           rowEnter.append('td').attr('class', 'cell-icon community-icon').append('a').attr('target', '_blank').attr('href', function (d) {
+             return d.resolved.url;
+           }).append('svg').attr('class', 'logo-small').append('use').attr('xlink:href', function (d) {
+             return "#community-".concat(d.type);
+           });
+           var communityDetail = rowEnter.append('td').attr('class', 'cell-detail community-detail');
+           communityDetail.each(showCommunityDetails);
+           communityLinks.append('div').attr('class', 'community-missing').html(_t.html('success.missing')).append('a').attr('class', 'link-out').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/osmlab/osm-community-index/issues').append('span').html(_t.html('success.tell_us'));
+         }

 
 

-           if (extent) {
-             var countryCode;
+         function showCommunityDetails(d) {
+           var selection = select(this);
+           var communityID = d.id;
+           selection.append('div').attr('class', 'community-name').html(d.resolved.nameHTML);
+           selection.append('div').attr('class', 'community-description').html(d.resolved.descriptionHTML); // Create an expanding section if any of these are present..

 
 

-             if (context.inIntro()) {
-               // localize the address format for the walkthrough
-               countryCode = _t('intro.graph.countrycode');
-             } else {
-               var center = extent.center();
-               countryCode = iso1A2Code(center);
+           if (d.resolved.extendedDescriptionHTML || d.languageCodes && d.languageCodes.length) {
+             selection.append('div').call(uiDisclosure(context, "community-more-".concat(d.id), false).expanded(false).updatePreference(false).label(_t.html('success.more')).content(showMore));
+           }
+
+           var nextEvents = (d.events || []).map(function (event) {
+             event.date = parseEventDate(event.when);
+             return event;
+           }).filter(function (event) {
+             // date is valid and future (or today)
+             var t = event.date.getTime();
+             var now = new Date().setHours(0, 0, 0, 0);
+             return !isNaN(t) && t >= now;
+           }).sort(function (a, b) {
+             // sort by date ascending
+             return a.date < b.date ? -1 : a.date > b.date ? 1 : 0;
+           }).slice(0, MAXEVENTS); // limit number of events shown
+
+           if (nextEvents.length) {
+             selection.append('div').call(uiDisclosure(context, "community-events-".concat(d.id), false).expanded(false).updatePreference(false).label(_t.html('success.events')).content(showNextEvents)).select('.hide-toggle').append('span').attr('class', 'badge-text').html(nextEvents.length);
+           }
+
+           function showMore(selection) {
+             var more = selection.selectAll('.community-more').data([0]);
+             var moreEnter = more.enter().append('div').attr('class', 'community-more');
+
+             if (d.resolved.extendedDescriptionHTML) {
+               moreEnter.append('div').attr('class', 'community-extended-description').html(d.resolved.extendedDescriptionHTML);

              }
 
              }
 

-             if (countryCode) {
-               _countryCode = countryCode.toLowerCase();
-               updateForCountryCode();
+             if (d.languageCodes && d.languageCodes.length) {
+               var languageList = d.languageCodes.map(function (code) {
+                 return _mainLocalizer.languageName(code);
+               }).join(', ');
+               moreEnter.append('div').attr('class', 'community-languages').html(_t.html('success.languages', {
+                 languages: languageList
+               }));

              }
            }
              }
            }

-         }

 
 

-         function change(onInput) {
-           return function () {
-             var tags = {};
+           function showNextEvents(selection) {
+             var events = selection.append('div').attr('class', 'community-events');
+             var item = events.selectAll('.community-event').data(nextEvents);
+             var itemEnter = item.enter().append('div').attr('class', 'community-event');
+             itemEnter.append('div').attr('class', 'community-event-name').append('a').attr('target', '_blank').attr('href', function (d) {
+               return d.url;
+             }).html(function (d) {
+               var name = d.name;

 
 

-             _wrap.selectAll('input').each(function (subfield) {
-               var key = field.key + ':' + subfield.id;
-               var value = this.value;
-               if (!onInput) value = context.cleanTagValue(value); // don't override multiple values with blank string
+               if (d.i18n && d.id) {
+                 name = _t("community.".concat(communityID, ".events.").concat(d.id, ".name"), {
+                   "default": name
+                 });
+               }

 
 

-               if (Array.isArray(_tags[key]) && !value) return;
-               tags[key] = value || undefined;
+               return name;
+             });
+             itemEnter.append('div').attr('class', 'community-event-when').html(function (d) {
+               var options = {
+                 weekday: 'short',
+                 day: 'numeric',
+                 month: 'short',
+                 year: 'numeric'
+               };
+
+               if (d.date.getHours() || d.date.getMinutes()) {
+                 // include time if it has one
+                 options.hour = 'numeric';
+                 options.minute = 'numeric';
+               }
+
+               return d.date.toLocaleString(_mainLocalizer.localeCode(), options);

              });
              });

+             itemEnter.append('div').attr('class', 'community-event-where').html(function (d) {
+               var where = d.where;

 
 

-             dispatch$1.call('change', this, tags, onInput);
-           };
+               if (d.i18n && d.id) {
+                 where = _t("community.".concat(communityID, ".events.").concat(d.id, ".where"), {
+                   "default": where
+                 });
+               }
+
+               return where;
+             });
+             itemEnter.append('div').attr('class', 'community-event-description').html(function (d) {
+               var description = d.description;
+
+               if (d.i18n && d.id) {
+                 description = _t("community.".concat(communityID, ".events.").concat(d.id, ".description"), {
+                   "default": description
+                 });
+               }
+
+               return description;
+             });
+           }

          }
 
          }
 

-         function updatePlaceholder(inputSelection) {
-           return inputSelection.attr('placeholder', function (subfield) {
-             if (_tags && Array.isArray(_tags[field.key + ':' + subfield.id])) {
-               return _t('inspector.multiple_values');
-             }
+         success.changeset = function (val) {
+           if (!arguments.length) return _changeset;
+           _changeset = val;
+           return success;
+         };

 
 

-             if (_countryCode) {
-               var localkey = subfield.id + '!' + _countryCode;
-               var tkey = addrField.strings.placeholders[localkey] ? localkey : subfield.id;
-               return addrField.t('placeholders.' + tkey);
-             }
-           });
+         success.location = function (val) {
+           if (!arguments.length) return _location;
+           _location = val;
+           return success;
+         };
+
+         return utilRebind(success, dispatch, 'on');
+       }
+
+       function modeSave(context) {
+         var mode = {
+           id: 'save'
+         };
+         var keybinding = utilKeybinding('modeSave');
+         var commit = uiCommit(context).on('cancel', cancel);
+
+         var _conflictsUi; // uiConflicts
+
+
+         var _location;
+
+         var _success;
+
+         var uploader = context.uploader().on('saveStarted.modeSave', function () {
+           keybindingOff();
+         }) // fire off some async work that we want to be ready later
+         .on('willAttemptUpload.modeSave', prepareForSuccess).on('progressChanged.modeSave', showProgress).on('resultNoChanges.modeSave', function () {
+           cancel();
+         }).on('resultErrors.modeSave', showErrors).on('resultConflicts.modeSave', showConflicts).on('resultSuccess.modeSave', showSuccess);
+
+         function cancel() {
+           context.enter(modeBrowse(context));

          }
 
          }
 

-         function updateTags(tags) {
-           utilGetSetValue(_wrap.selectAll('input'), function (subfield) {
-             var val = tags[field.key + ':' + subfield.id];
-             return typeof val === 'string' ? val : '';
-           }).attr('title', function (subfield) {
-             var val = tags[field.key + ':' + subfield.id];
-             return val && Array.isArray(val) && val.filter(Boolean).join('\n');
-           }).classed('mixed', function (subfield) {
-             return Array.isArray(tags[field.key + ':' + subfield.id]);
-           }).call(updatePlaceholder);
+         function showProgress(num, total) {
+           var modal = context.container().select('.loading-modal .modal-section');
+           var progress = modal.selectAll('.progress').data([0]); // enter/update
+
+           progress.enter().append('div').attr('class', 'progress').merge(progress).text(_t('save.conflict_progress', {
+             num: num,
+             total: total
+           }));
+         }
+
+         function showConflicts(changeset, conflicts, origChanges) {
+           var selection = context.container().select('.sidebar').append('div').attr('class', 'sidebar-component');
+           context.container().selectAll('.main-content').classed('active', true).classed('inactive', false);
+           _conflictsUi = uiConflicts(context).conflictList(conflicts).origChanges(origChanges).on('cancel', function () {
+             context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
+             selection.remove();
+             keybindingOn();
+             uploader.cancelConflictResolution();
+           }).on('save', function () {
+             context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
+             selection.remove();
+             uploader.processResolvedConflicts(changeset);
+           });
+           selection.call(_conflictsUi);

          }
 
          }
 

-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         function showErrors(errors) {
+           keybindingOn();
+           var selection = uiConfirm(context.container());
+           selection.select('.modal-section.header').append('h3').text(_t('save.error'));
+           addErrors(selection, errors);
+           selection.okButton();

          }
 
          }
 

-         address.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return address;
-         };
-
-         address.tags = function (tags) {
-           _tags = tags;
-           updateTags(tags);
-         };
+         function addErrors(selection, data) {
+           var message = selection.select('.modal-section.message-text');
+           var items = message.selectAll('.error-container').data(data);
+           var enter = items.enter().append('div').attr('class', 'error-container');
+           enter.append('a').attr('class', 'error-description').attr('href', '#').classed('hide-toggle', true).text(function (d) {
+             return d.msg || _t('save.unknown_error_details');
+           }).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             var error = select(this);
+             var detail = select(this.nextElementSibling);
+             var exp = error.classed('expanded');
+             detail.style('display', exp ? 'none' : 'block');
+             error.classed('expanded', !exp);
+           });
+           var details = enter.append('div').attr('class', 'error-detail-container').style('display', 'none');
+           details.append('ul').attr('class', 'error-detail-list').selectAll('li').data(function (d) {
+             return d.details || [];
+           }).enter().append('li').attr('class', 'error-detail-item').text(function (d) {
+             return d;
+           });
+           items.exit().remove();
+         }

 
 

-         address.focus = function () {
-           var node = _wrap.selectAll('input').node();
+         function showSuccess(changeset) {
+           commit.reset();

 
 

-           if (node) node.focus();
-         };
+           var ui = _success.changeset(changeset).location(_location).on('cancel', function () {
+             context.ui().sidebar.hide();
+           });

 
 

-         return utilRebind(address, dispatch$1, 'on');
-       }
+           context.enter(modeBrowse(context).sidebar(ui));
+         }

 
 

-       function uiFieldCycleway(field, context) {
-         var dispatch$1 = dispatch('change');
-         var items = select(null);
-         var wrap = select(null);
+         function keybindingOn() {
+           select(document).call(keybinding.on('⎋', cancel, true));
+         }

 
 

-         var _tags;
+         function keybindingOff() {
+           select(document).call(keybinding.unbind);
+         } // Reverse geocode current map location so we can display a message on
+         // the success screen like "Thank you for editing around place, region."

 
 

-         function cycleway(selection) {
-           function stripcolon(s) {
-             return s.replace(':', '');
-           }

 
 

-           wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           var div = wrap.selectAll('ul').data([0]);
-           div = div.enter().append('ul').attr('class', 'rows').merge(div);
-           var keys = ['cycleway:left', 'cycleway:right'];
-           items = div.selectAll('li').data(keys);
-           var enter = items.enter().append('li').attr('class', function (d) {
-             return 'labeled-input preset-cycleway-' + stripcolon(d);
-           });
-           enter.append('span').attr('class', 'label preset-label-cycleway').attr('for', function (d) {
-             return 'preset-input-cycleway-' + stripcolon(d);
-           }).html(function (d) {
-             return field.t.html('types.' + d);
-           });
-           enter.append('div').attr('class', 'preset-input-cycleway-wrap').append('input').attr('type', 'text').attr('class', function (d) {
-             return 'preset-input-cycleway preset-input-' + stripcolon(d);
-           }).call(utilNoAuto).each(function (d) {
-             select(this).call(uiCombobox(context, 'cycleway-' + stripcolon(d)).data(cycleway.options(d)));
+         function prepareForSuccess() {
+           _success = uiSuccess(context);
+           _location = null;
+           if (!services.geocoder) return;
+           services.geocoder.reverse(context.map().center(), function (err, result) {
+             if (err || !result || !result.address) return;
+             var addr = result.address;
+             var place = addr && (addr.town || addr.city || addr.county) || '';
+             var region = addr && (addr.state || addr.country) || '';
+             var separator = place && region ? _t('success.thank_you_where.separator') : '';
+             _location = _t('success.thank_you_where.format', {
+               place: place,
+               separator: separator,
+               region: region
+             });

            });
            });

-           items = items.merge(enter); // Update
-
-           wrap.selectAll('.preset-input-cycleway').on('change', change).on('blur', change);

          }
 
          }
 

-         function change(d3_event, key) {
-           var newValue = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string
+         mode.selectedIDs = function () {
+           return _conflictsUi ? _conflictsUi.shownEntityIds() : [];
+         };

 
 

-           if (!newValue && (Array.isArray(_tags.cycleway) || Array.isArray(_tags[key]))) return;
+         mode.enter = function () {
+           // Show sidebar
+           context.ui().sidebar.expand();

 
 

-           if (newValue === 'none' || newValue === '') {
-             newValue = undefined;
+           function done() {
+             context.ui().sidebar.show(commit);

            }
 
            }
 

-           var otherKey = key === 'cycleway:left' ? 'cycleway:right' : 'cycleway:left';
-           var otherValue = typeof _tags.cycleway === 'string' ? _tags.cycleway : _tags[otherKey];
-
-           if (otherValue && Array.isArray(otherValue)) {
-             // we must always have an explicit value for comparison
-             otherValue = otherValue[0];
-           }
+           keybindingOn();
+           context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
+           var osm = context.connection();

 
 

-           if (otherValue === 'none' || otherValue === '') {
-             otherValue = undefined;
+           if (!osm) {
+             cancel();
+             return;

            }
 
            }
 

-           var tag = {}; // If the left and right tags match, use the cycleway tag to tag both
-           // sides the same way
-
-           if (newValue === otherValue) {
-             tag = {
-               cycleway: newValue,
-               'cycleway:left': undefined,
-               'cycleway:right': undefined
-             };
+           if (osm.authenticated()) {
+             done();

            } else {
            } else {

-             // Always set both left and right as changing one can affect the other
-             tag = {
-               cycleway: undefined
-             };
-             tag[key] = newValue;
-             tag[otherKey] = otherValue;
+             osm.authenticate(function (err) {
+               if (err) {
+                 cancel();
+               } else {
+                 done();
+               }
+             });

            }
            }

-
-           dispatch$1.call('change', this, tag);
-         }
-
-         cycleway.options = function () {
-           return Object.keys(field.strings.options).map(function (option) {
-             return {
-               title: field.t('options.' + option + '.description'),
-               value: option
-             };
-           });

          };
 
          };
 

-         cycleway.tags = function (tags) {
-           _tags = tags; // If cycleway is set, use that instead of individual values
+         mode.exit = function () {
+           keybindingOff();
+           context.container().selectAll('.main-content').classed('active', true).classed('inactive', false);
+           context.ui().sidebar.hide();
+         };

 
 

-           var commonValue = typeof tags.cycleway === 'string' && tags.cycleway;
-           utilGetSetValue(items.selectAll('.preset-input-cycleway'), function (d) {
-             if (commonValue) return commonValue;
-             return !tags.cycleway && typeof tags[d] === 'string' ? tags[d] : '';
-           }).attr('title', function (d) {
-             if (Array.isArray(tags.cycleway) || Array.isArray(tags[d])) {
-               var vals = [];
+         return mode;
+       }

 
 

-               if (Array.isArray(tags.cycleway)) {
-                 vals = vals.concat(tags.cycleway);
-               }
+       function modeSelectError(context, selectedErrorID, selectedErrorService) {
+         var mode = {
+           id: 'select-error',
+           button: 'browse'
+         };
+         var keybinding = utilKeybinding('select-error');
+         var errorService = services[selectedErrorService];
+         var errorEditor;

 
 

-               if (Array.isArray(tags[d])) {
-                 vals = vals.concat(tags[d]);
-               }
+         switch (selectedErrorService) {
+           case 'improveOSM':
+             errorEditor = uiImproveOsmEditor(context).on('change', function () {
+               context.map().pan([0, 0]); // trigger a redraw

 
 

-               return vals.filter(Boolean).join('\n');
-             }
+               var error = checkSelectedID();
+               if (!error) return;
+               context.ui().sidebar.show(errorEditor.error(error));
+             });
+             break;

 
 

-             return null;
-           }).attr('placeholder', function (d) {
-             if (Array.isArray(tags.cycleway) || Array.isArray(tags[d])) {
-               return _t('inspector.multiple_values');
-             }
+           case 'keepRight':
+             errorEditor = uiKeepRightEditor(context).on('change', function () {
+               context.map().pan([0, 0]); // trigger a redraw

 
 

-             return field.placeholder();
-           }).classed('mixed', function (d) {
-             return Array.isArray(tags.cycleway) || Array.isArray(tags[d]);
-           });
-         };
+               var error = checkSelectedID();
+               if (!error) return;
+               context.ui().sidebar.show(errorEditor.error(error));
+             });
+             break;

 
 

-         cycleway.focus = function () {
-           var node = wrap.selectAll('input').node();
-           if (node) node.focus();
-         };
+           case 'osmose':
+             errorEditor = uiOsmoseEditor(context).on('change', function () {
+               context.map().pan([0, 0]); // trigger a redraw

 
 

-         return utilRebind(cycleway, dispatch$1, 'on');
-       }
+               var error = checkSelectedID();
+               if (!error) return;
+               context.ui().sidebar.show(errorEditor.error(error));
+             });
+             break;
+         }

 
 

-       function uiFieldLanes(field, context) {
-         var dispatch$1 = dispatch('change');
-         var LANE_WIDTH = 40;
-         var LANE_HEIGHT = 200;
-         var _entityIDs = [];
+         var behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];

 
 

-         function lanes(selection) {
-           var lanesData = context.entity(_entityIDs[0]).lanes();
+         function checkSelectedID() {
+           if (!errorService) return;
+           var error = errorService.getError(selectedErrorID);

 
 

-           if (!context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode) {
-             selection.call(lanes.off);
-             return;
+           if (!error) {
+             context.enter(modeBrowse(context));

            }
 
            }
 

-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           var surface = wrap.selectAll('.surface').data([0]);
-           var d = utilGetDimensions(wrap);
-           var freeSpace = d[0] - lanesData.lanes.length * LANE_WIDTH * 1.5 + LANE_WIDTH * 0.5;
-           surface = surface.enter().append('svg').attr('width', d[0]).attr('height', 300).attr('class', 'surface').merge(surface);
-           var lanesSelection = surface.selectAll('.lanes').data([0]);
-           lanesSelection = lanesSelection.enter().append('g').attr('class', 'lanes').merge(lanesSelection);
-           lanesSelection.attr('transform', function () {
-             return 'translate(' + freeSpace / 2 + ', 0)';
-           });
-           var lane = lanesSelection.selectAll('.lane').data(lanesData.lanes);
-           lane.exit().remove();
-           var enter = lane.enter().append('g').attr('class', 'lane');
-           enter.append('g').append('rect').attr('y', 50).attr('width', LANE_WIDTH).attr('height', LANE_HEIGHT);
-           enter.append('g').attr('class', 'forward').append('text').attr('y', 40).attr('x', 14).html('▲');
-           enter.append('g').attr('class', 'bothways').append('text').attr('y', 40).attr('x', 14).html('▲▼');
-           enter.append('g').attr('class', 'backward').append('text').attr('y', 40).attr('x', 14).html('▼');
-           lane = lane.merge(enter);
-           lane.attr('transform', function (d) {
-             return 'translate(' + LANE_WIDTH * d.index * 1.5 + ', 0)';
-           });
-           lane.select('.forward').style('visibility', function (d) {
-             return d.direction === 'forward' ? 'visible' : 'hidden';
-           });
-           lane.select('.bothways').style('visibility', function (d) {
-             return d.direction === 'bothways' ? 'visible' : 'hidden';
-           });
-           lane.select('.backward').style('visibility', function (d) {
-             return d.direction === 'backward' ? 'visible' : 'hidden';
-           });
+           return error;

          }
 
          }
 

-         lanes.entityIDs = function (val) {
-           _entityIDs = val;
+         mode.zoomToSelected = function () {
+           if (!errorService) return;
+           var error = errorService.getError(selectedErrorID);
+
+           if (error) {
+             context.map().centerZoomEase(error.loc, 20);
+           }

          };
 
          };
 

-         lanes.tags = function () {};
+         mode.enter = function () {
+           var error = checkSelectedID();
+           if (!error) return;
+           behaviors.forEach(context.install);
+           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
+           select(document).call(keybinding);
+           selectError();
+           var sidebar = context.ui().sidebar;
+           sidebar.show(errorEditor.error(error));
+           context.map().on('drawn.select-error', selectError); // class the error as selected, or return to browse mode if the error is gone

 
 

-         lanes.focus = function () {};
+           function selectError(d3_event, drawn) {
+             if (!checkSelectedID()) return;
+             var selection = context.surface().selectAll('.itemId-' + selectedErrorID + '.' + selectedErrorService);

 
 

-         lanes.off = function () {};
+             if (selection.empty()) {
+               // Return to browse mode if selected DOM elements have
+               // disappeared because the user moved them out of view..
+               var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;
+
+               if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
+                 context.enter(modeBrowse(context));
+               }
+             } else {
+               selection.classed('selected', true);
+               context.selectedErrorID(selectedErrorID);
+             }
+           }
+
+           function esc() {
+             if (context.container().select('.combobox').size()) return;
+             context.enter(modeBrowse(context));
+           }
+         };
+
+         mode.exit = function () {
+           behaviors.forEach(context.uninstall);
+           select(document).call(keybinding.unbind);
+           context.surface().selectAll('.qaItem.selected').classed('selected hover', false);
+           context.map().on('drawn.select-error', null);
+           context.ui().sidebar.hide();
+           context.selectedErrorID(null);
+           context.features().forceVisible([]);
+         };

 
 

-         return utilRebind(lanes, dispatch$1, 'on');
+         return mode;

        }
        }

-       uiFieldLanes.supportsMultiselection = false;

 
 

-       var _languagesArray = [];
-       function uiFieldLocalized(field, context) {
-         var dispatch$1 = dispatch('change', 'input');
-         var wikipedia = services.wikipedia;
-         var input = select(null);
-         var localizedInputs = select(null);
+       function uiToolOldDrawModes(context) {
+         var tool = {
+           id: 'old_modes',
+           label: _t.html('toolbar.add_feature')
+         };
+         var modes = [modeAddPoint(context, {
+           title: _t.html('modes.add_point.title'),
+           button: 'point',
+           description: _t.html('modes.add_point.description'),
+           preset: _mainPresetIndex.item('point'),
+           key: '1'
+         }), modeAddLine(context, {
+           title: _t.html('modes.add_line.title'),
+           button: 'line',
+           description: _t.html('modes.add_line.description'),
+           preset: _mainPresetIndex.item('line'),
+           key: '2'
+         }), modeAddArea(context, {
+           title: _t.html('modes.add_area.title'),
+           button: 'area',
+           description: _t.html('modes.add_area.description'),
+           preset: _mainPresetIndex.item('area'),
+           key: '3'
+         })];

 
 

-         var _countryCode;
+         function enabled() {
+           return osmEditable();
+         }

 
 

-         var _tags; // A concern here in switching to async data means that _languagesArray will not
-         // be available the first time through, so things like the fetchers and
-         // the language() function will not work immediately.
+         function osmEditable() {
+           return context.editable();
+         }

 
 

+         modes.forEach(function (mode) {
+           context.keybinding().on(mode.key, function () {
+             if (!enabled()) return;

 
 

-         _mainFileFetcher.get('languages').then(loadLanguagesArray)["catch"](function () {
-           /* ignore */
-         });
-         var _territoryLanguages = {};
-         _mainFileFetcher.get('territory_languages').then(function (d) {
-           _territoryLanguages = d;
-         })["catch"](function () {
-           /* ignore */
+             if (mode.id === context.mode().id) {
+               context.enter(modeBrowse(context));
+             } else {
+               context.enter(mode);
+             }
+           });

          });
          });

-         var allSuggestions = _mainPresetIndex.collection.filter(function (p) {
-           return p.suggestion === true;
-         }); // reuse these combos

 
 

-         var langCombo = uiCombobox(context, 'localized-lang').fetcher(fetchLanguages).minItems(0);
-         var brandCombo = uiCombobox(context, 'localized-brand').canAutocomplete(false).minItems(1);
+         tool.render = function (selection) {
+           var wrap = selection.append('div').attr('class', 'joined').style('display', 'flex');

 
 

-         var _selection = select(null);
+           var debouncedUpdate = debounce(update, 500, {
+             leading: true,
+             trailing: true
+           });

 
 

-         var _multilingual = [];
+           context.map().on('move.modes', debouncedUpdate).on('drawn.modes', debouncedUpdate);
+           context.on('enter.modes', update);
+           update();

 
 

-         var _buttonTip = uiTooltip().title(_t.html('translate.translate')).placement('left');
+           function update() {
+             var buttons = wrap.selectAll('button.add-button').data(modes, function (d) {
+               return d.id;
+             }); // exit

 
 

-         var _wikiTitles;
+             buttons.exit().remove(); // enter

 
 

-         var _entityIDs = [];
+             var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
+               return d.id + ' add-button bar-button';
+             }).on('click.mode-buttons', function (d3_event, d) {
+               if (!enabled()) return; // When drawing, ignore accidental clicks on mode buttons - #4042

 
 

-         function loadLanguagesArray(dataLanguages) {
-           if (_languagesArray.length !== 0) return; // some conversion is needed to ensure correct OSM tags are used
+               var currMode = context.mode().id;
+               if (/^draw/.test(currMode)) return;

 
 

-           var replacements = {
-             sr: 'sr-Cyrl',
-             // in OSM, `sr` implies Cyrillic
-             'sr-Cyrl': false // `sr-Cyrl` isn't used in OSM
+               if (d.id === currMode) {
+                 context.enter(modeBrowse(context));
+               } else {
+                 context.enter(d);
+               }
+             }).call(uiTooltip().placement('bottom').title(function (d) {
+               return d.description;
+             }).keys(function (d) {
+               return [d.key];
+             }).scrollContainer(context.container().select('.top-toolbar')));
+             buttonsEnter.each(function (d) {
+               select(this).call(svgIcon('#iD-icon-' + d.button));
+             });
+             buttonsEnter.append('span').attr('class', 'label').html(function (mode) {
+               return mode.title;
+             }); // if we are adding/removing the buttons, check if toolbar has overflowed

 
 

-           };
+             if (buttons.enter().size() || buttons.exit().size()) {
+               context.ui().checkOverflow('.top-toolbar', true);
+             } // update

 
 

-           for (var code in dataLanguages) {
-             if (replacements[code] === false) continue;
-             var metaCode = code;
-             if (replacements[code]) metaCode = replacements[code];

 
 

-             _languagesArray.push({
-               localName: _mainLocalizer.languageName(metaCode, {
-                 localOnly: true
-               }),
-               nativeName: dataLanguages[metaCode].nativeName,
-               code: code,
-               label: _mainLocalizer.languageName(metaCode)
+             buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
+               return !enabled();
+             }).classed('active', function (d) {
+               return context.mode() && context.mode().button === d.button;

              });
            }
              });
            }

-         }
+         };

 
 

-         function calcLocked() {
-           // only lock the Name field
-           var isLocked = field.id === 'name' && _entityIDs.length && // lock the field if any feature needs it
-           _entityIDs.some(function (entityID) {
-             var entity = context.graph().hasEntity(entityID);
-             if (!entity) return false;
+         return tool;
+       }
+
+       function uiToolNotes(context) {
+         var tool = {
+           id: 'notes',
+           label: _t.html('modes.add_note.label')
+         };
+         var mode = modeAddNote(context);

 
 

-             var original = context.graph().base().entities[_entityIDs[0]];
+         function enabled() {
+           return notesEnabled() && notesEditable();
+         }

 
 

-             var hasOriginalName = original && entity.tags.name && entity.tags.name === original.tags.name; // if the name was already edited manually then allow further editing
+         function notesEnabled() {
+           var noteLayer = context.layers().layer('notes');
+           return noteLayer && noteLayer.enabled();
+         }

 
 

-             if (!hasOriginalName) return false; // features linked to Wikidata are likely important and should be protected
+         function notesEditable() {
+           var mode = context.mode();
+           return context.map().notesEditable() && mode && mode.id !== 'save';
+         }

 
 

-             if (entity.tags.wikidata) return true; // assume the name has already been confirmed if its source has been researched
+         context.keybinding().on(mode.key, function () {
+           if (!enabled()) return;

 
 

-             if (entity.tags['name:etymology:wikidata']) return true;
-             var preset = _mainPresetIndex.match(entity, context.graph());
-             var isSuggestion = preset && preset.suggestion;
-             var showsBrand = preset && preset.originalFields.filter(function (d) {
-               return d.id === 'brand';
-             }).length; // protect standardized brand names
+           if (mode.id === context.mode().id) {
+             context.enter(modeBrowse(context));
+           } else {
+             context.enter(mode);
+           }
+         });

 
 

-             return isSuggestion && !showsBrand;
+         tool.render = function (selection) {
+           var debouncedUpdate = debounce(update, 500, {
+             leading: true,
+             trailing: true

            });
 
            });
 

-           field.locked(isLocked);
-         } // update _multilingual, maintaining the existing order
+           context.map().on('move.notes', debouncedUpdate).on('drawn.notes', debouncedUpdate);
+           context.on('enter.notes', update);
+           update();
+
+           function update() {
+             var showNotes = notesEnabled();
+             var data = showNotes ? [mode] : [];
+             var buttons = selection.selectAll('button.add-button').data(data, function (d) {
+               return d.id;
+             }); // exit
+
+             buttons.exit().remove(); // enter

 
 

+             var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
+               return d.id + ' add-button bar-button';
+             }).on('click.notes', function (d3_event, d) {
+               if (!enabled()) return; // When drawing, ignore accidental clicks on mode buttons - #4042

 
 

-         function calcMultilingual(tags) {
-           var existingLangsOrdered = _multilingual.map(function (item) {
-             return item.lang;
-           });
+               var currMode = context.mode().id;
+               if (/^draw/.test(currMode)) return;

 
 

-           var existingLangs = new Set(existingLangsOrdered.filter(Boolean));
+               if (d.id === currMode) {
+                 context.enter(modeBrowse(context));
+               } else {
+                 context.enter(d);
+               }
+             }).call(uiTooltip().placement('bottom').title(function (d) {
+               return d.description;
+             }).keys(function (d) {
+               return [d.key];
+             }).scrollContainer(context.container().select('.top-toolbar')));
+             buttonsEnter.each(function (d) {
+               select(this).call(svgIcon(d.icon || '#iD-icon-' + d.button));
+             }); // if we are adding/removing the buttons, check if toolbar has overflowed

 
 

-           for (var k in tags) {
-             var m = k.match(/^(.*):([a-zA-Z_-]+)$/);
+             if (buttons.enter().size() || buttons.exit().size()) {
+               context.ui().checkOverflow('.top-toolbar', true);
+             } // update

 
 

-             if (m && m[1] === field.key && m[2]) {
-               var item = {
-                 lang: m[2],
-                 value: tags[k]
-               };

 
 

-               if (existingLangs.has(item.lang)) {
-                 // update the value
-                 _multilingual[existingLangsOrdered.indexOf(item.lang)].value = item.value;
-                 existingLangs["delete"](item.lang);
-               } else {
-                 _multilingual.push(item);
-               }
-             }
+             buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
+               return !enabled();
+             }).classed('active', function (d) {
+               return context.mode() && context.mode().button === d.button;
+             });

            }
            }

+         };

 
 

-           _multilingual = _multilingual.filter(function (item) {
-             return !item.lang || !existingLangs.has(item.lang);
-           });
-         }
+         tool.uninstall = function () {
+           context.on('enter.editor.notes', null).on('exit.editor.notes', null).on('enter.notes', null);
+           context.map().on('move.notes', null).on('drawn.notes', null);
+         };

 
 

-         function localized(selection) {
-           _selection = selection;
-           calcLocked();
-           var isLocked = field.locked();
-           var singularEntity = _entityIDs.length === 1 && context.hasEntity(_entityIDs[0]);
-           var preset = singularEntity && _mainPresetIndex.match(singularEntity, context.graph());
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]); // enter/update
+         return tool;
+       }

 
 

-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           input = wrap.selectAll('.localized-main').data([0]); // enter/update
+       function uiToolSave(context) {
+         var tool = {
+           id: 'save',
+           label: _t.html('save.title')
+         };
+         var button = null;
+         var tooltipBehavior = null;
+         var history = context.history();
+         var key = uiCmd('⌘S');
+         var _numChanges = 0;

 
 

-           input = input.enter().append('input').attr('type', 'text').attr('id', field.domId).attr('class', 'localized-main').call(utilNoAuto).merge(input);
+         function isSaving() {
+           var mode = context.mode();
+           return mode && mode.id === 'save';
+         }

 
 

-           if (preset && field.id === 'name') {
-             var pTag = preset.id.split('/', 2);
-             var pKey = pTag[0];
-             var pValue = pTag[1];
+         function isDisabled() {
+           return _numChanges === 0 || isSaving();
+         }

 
 

-             if (!preset.suggestion) {
-               // Not a suggestion preset - Add a suggestions dropdown if it makes sense to.
-               // This code attempts to determine if the matched preset is the
-               // kind of preset that even can benefit from name suggestions..
-               // - true = shops, cafes, hotels, etc. (also generic and fallback presets)
-               // - false = churches, parks, hospitals, etc. (things not in the index)
-               var isFallback = preset.isFallback();
-               var goodSuggestions = allSuggestions.filter(function (s) {
-                 if (isFallback) return true;
-                 var sTag = s.id.split('/', 2);
-                 var sKey = sTag[0];
-                 var sValue = sTag[1];
-                 return pKey === sKey && (!pValue || pValue === sValue);
-               }); // Show the suggestions.. If the user picks one, change the tags..
+         function save(d3_event) {
+           d3_event.preventDefault();

 
 

-               if (allSuggestions.length && goodSuggestions.length) {
-                 input.on('blur.localized', checkBrandOnBlur).call(brandCombo.fetcher(fetchBrandNames(preset, allSuggestions)).on('accept', acceptBrand).on('cancel', cancelBrand));
-               }
-             }
+           if (!context.inIntro() && !isSaving() && history.hasChanges()) {
+             context.enter(modeSave(context));

            }
            }

+         }

 
 

-           input.classed('disabled', !!isLocked).attr('readonly', isLocked || null).on('input', change(true)).on('blur', change()).on('change', change());
-           var translateButton = wrap.selectAll('.localized-add').data([0]);
-           translateButton = translateButton.enter().append('button').attr('class', 'localized-add form-field-button').call(svgIcon('#iD-icon-plus')).merge(translateButton);
-           translateButton.classed('disabled', !!isLocked).call(isLocked ? _buttonTip.destroy : _buttonTip).on('click', addNew);
+         function bgColor() {
+           var step;

 
 

-           if (_tags && !_multilingual.length) {
-             calcMultilingual(_tags);
+           if (_numChanges === 0) {
+             return null;
+           } else if (_numChanges <= 50) {
+             step = _numChanges / 50;
+             return d3_interpolateRgb('#fff', '#ff8')(step); // white -> yellow
+           } else {
+             step = Math.min((_numChanges - 50) / 50, 1.0);
+             return d3_interpolateRgb('#ff8', '#f88')(step); // yellow -> red

            }
            }

+         }

 
 

-           localizedInputs = selection.selectAll('.localized-multilingual').data([0]);
-           localizedInputs = localizedInputs.enter().append('div').attr('class', 'localized-multilingual').merge(localizedInputs);
-           localizedInputs.call(renderMultilingual);
-           localizedInputs.selectAll('button, input').classed('disabled', !!isLocked).attr('readonly', isLocked || null); // We are not guaranteed to get an `accept` or `cancel` when blurring the field.
-           // (This can happen if the user actives the combo, arrows down, and then clicks off to blur)
-           // So compare the current field value against the suggestions one last time.
-
-           function checkBrandOnBlur() {
-             var latest = _entityIDs.length === 1 && context.hasEntity(_entityIDs[0]);
-             if (!latest) return; // deleting the entity blurred the field?
-
-             var preset = _mainPresetIndex.match(latest, context.graph());
-             if (preset && preset.suggestion) return; // already accepted
+         function updateCount() {
+           var val = history.difference().summary().length;
+           if (val === _numChanges) return;
+           _numChanges = val;

 
 

-             var name = utilGetSetValue(input).trim();
-             var matched = allSuggestions.filter(function (s) {
-               return name === s.name();
-             });
+           if (tooltipBehavior) {
+             tooltipBehavior.title(_t.html(_numChanges > 0 ? 'save.help' : 'save.no_changes')).keys([key]);
+           }

 
 

-             if (matched.length === 1) {
-               acceptBrand({
-                 suggestion: matched[0]
-               });
-             } else {
-               cancelBrand();
-             }
+           if (button) {
+             button.classed('disabled', isDisabled()).style('background', bgColor());
+             button.select('span.count').html(_numChanges);

            }
            }

+         }

 
 

-           function acceptBrand(d) {
-             var entity = _entityIDs.length === 1 && context.hasEntity(_entityIDs[0]);
+         tool.render = function (selection) {
+           tooltipBehavior = uiTooltip().placement('bottom').title(_t.html('save.no_changes')).keys([key]).scrollContainer(context.container().select('.top-toolbar'));
+           var lastPointerUpType;
+           button = selection.append('button').attr('class', 'save disabled bar-button').on('pointerup', function (d3_event) {
+             lastPointerUpType = d3_event.pointerType;
+           }).on('click', function (d3_event) {
+             save(d3_event);

 
 

-             if (!d || !entity) {
-               cancelBrand();
-               return;
+             if (_numChanges === 0 && (lastPointerUpType === 'touch' || lastPointerUpType === 'pen')) {
+               // there are no tooltips for touch interactions so flash feedback instead
+               context.ui().flash.duration(2000).iconName('#iD-icon-save').iconClass('disabled').label(_t.html('save.no_changes'))();

              }
 
              }
 

-             var tags = entity.tags;
-             var geometry = entity.geometry(context.graph());
-             var removed = preset.unsetTags(tags, geometry);
+             lastPointerUpType = null;
+           }).call(tooltipBehavior);
+           button.call(svgIcon('#iD-icon-save'));
+           button.append('span').attr('class', 'count').attr('aria-hidden', 'true').html('0');
+           updateCount();
+           context.keybinding().on(key, save, true);
+           context.history().on('change.save', updateCount);
+           context.on('enter.save', function () {
+             if (button) {
+               button.classed('disabled', isDisabled());

 
 

-             for (var k in tags) {
-               tags[k] = removed[k]; // set removed tags to `undefined`
+               if (isSaving()) {
+                 button.call(tooltipBehavior.hide);
+               }

              }
              }

+           });
+         };

 
 

-             tags = d.suggestion.setTags(tags, geometry);
-             utilGetSetValue(input, tags.name);
-             dispatch$1.call('change', this, tags);
-           } // user hit escape
+         tool.uninstall = function () {
+           context.keybinding().off(key, true);
+           context.history().on('change.save', null);
+           context.on('enter.save', null);
+           button = null;
+           tooltipBehavior = null;
+         };

 
 

+         return tool;
+       }

 
 

-           function cancelBrand() {
-             var name = utilGetSetValue(input);
-             dispatch$1.call('change', this, {
-               name: name
-             });
-           }
+       function uiToolSidebarToggle(context) {
+         var tool = {
+           id: 'sidebar_toggle',
+           label: _t.html('toolbar.inspect')
+         };

 
 

-           function fetchBrandNames(preset, suggestions) {
-             var pTag = preset.id.split('/', 2);
-             var pKey = pTag[0];
-             var pValue = pTag[1];
-             return function (value, callback) {
-               var results = [];
-
-               if (value && value.length > 2) {
-                 for (var i = 0; i < suggestions.length; i++) {
-                   var s = suggestions[i]; // don't suggest brands from incompatible countries
-
-                   if (_countryCode && s.countryCodes && s.countryCodes.indexOf(_countryCode) === -1) continue;
-                   var sTag = s.id.split('/', 2);
-                   var sKey = sTag[0];
-                   var sValue = sTag[1];
-                   var subtitle = s.subtitle();
-                   var name = s.name();
-                   if (subtitle) name += ' – ' + subtitle;
-                   var dist = utilEditDistance(value, name.substring(0, value.length));
-                   var matchesPreset = pKey === sKey && (!pValue || pValue === sValue);
-
-                   if (dist < 1 || matchesPreset && dist < 3) {
-                     var obj = {
-                       value: s.name(),
-                       title: name,
-                       display: s.nameLabel() + (subtitle ? ' – ' + s.subtitleLabel() : ''),
-                       suggestion: s,
-                       dist: dist + (matchesPreset ? 0 : 1) // penalize if not matched preset
+         tool.render = function (selection) {
+           selection.append('button').attr('class', 'bar-button').on('click', function () {
+             context.ui().sidebar.toggle();
+           }).call(uiTooltip().placement('bottom').title(_t.html('sidebar.tooltip')).keys([_t('sidebar.key')]).scrollContainer(context.container().select('.top-toolbar'))).call(svgIcon('#iD-icon-sidebar-' + (_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')));
+         };

 
 

-                     };
-                     results.push(obj);
-                   }
-                 }
+         return tool;
+       }

 
 

-                 results.sort(function (a, b) {
-                   return a.dist - b.dist;
-                 });
-               }
+       function uiToolUndoRedo(context) {
+         var tool = {
+           id: 'undo_redo',
+           label: _t.html('toolbar.undo_redo')
+         };
+         var commands = [{
+           id: 'undo',
+           cmd: uiCmd('⌘Z'),
+           action: function action() {
+             context.undo();
+           },
+           annotation: function annotation() {
+             return context.history().undoAnnotation();
+           },
+           icon: 'iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo')
+         }, {
+           id: 'redo',
+           cmd: uiCmd('⌘⇧Z'),
+           action: function action() {
+             context.redo();
+           },
+           annotation: function annotation() {
+             return context.history().redoAnnotation();
+           },
+           icon: 'iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'undo' : 'redo')
+         }];

 
 

-               results = results.slice(0, 10);
-               callback(results);
-             };
-           }
+         function editable() {
+           return context.mode() && context.mode().id !== 'save' && context.map().editableDataEnabled(true
+           /* ignore min zoom */
+           );
+         }

 
 

-           function addNew(d3_event) {
+         tool.render = function (selection) {
+           var tooltipBehavior = uiTooltip().placement('bottom').title(function (d) {
+             return d.annotation() ? _t.html(d.id + '.tooltip', {
+               action: d.annotation()
+             }) : _t.html(d.id + '.nothing');
+           }).keys(function (d) {
+             return [d.cmd];
+           }).scrollContainer(context.container().select('.top-toolbar'));
+           var lastPointerUpType;
+           var buttons = selection.selectAll('button').data(commands).enter().append('button').attr('class', function (d) {
+             return 'disabled ' + d.id + '-button bar-button';
+           }).on('pointerup', function (d3_event) {
+             // `pointerup` is always called before `click`
+             lastPointerUpType = d3_event.pointerType;
+           }).on('click', function (d3_event, d) {

              d3_event.preventDefault();
              d3_event.preventDefault();

-             if (field.locked()) return;
-             var defaultLang = _mainLocalizer.languageCode().toLowerCase();
-
-             var langExists = _multilingual.find(function (datum) {
-               return datum.lang === defaultLang;
-             });
-
-             var isLangEn = defaultLang.indexOf('en') > -1;
+             var annotation = d.annotation();

 
 

-             if (isLangEn || langExists) {
-               defaultLang = '';
-               langExists = _multilingual.find(function (datum) {
-                 return datum.lang === defaultLang;
-               });
+             if (editable() && annotation) {
+               d.action();

              }
 
              }
 

-             if (!langExists) {
-               // prepend the value so it appears at the top
-               _multilingual.unshift({
-                 lang: defaultLang,
-                 value: ''
-               });
-
-               localizedInputs.call(renderMultilingual);
+             if (editable() && (lastPointerUpType === 'touch' || lastPointerUpType === 'pen')) {
+               // there are no tooltips for touch interactions so flash feedback instead
+               var text = annotation ? _t(d.id + '.tooltip', {
+                 action: annotation
+               }) : _t(d.id + '.nothing');
+               context.ui().flash.duration(2000).iconName('#' + d.icon).iconClass(annotation ? '' : 'disabled').label(text)();

              }
              }

-           }
-
-           function change(onInput) {
-             return function (d3_event) {
-               if (field.locked()) {
-                 d3_event.preventDefault();
-                 return;
-               }
-
-               var val = utilGetSetValue(select(this));
-               if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
-
-               if (!val && Array.isArray(_tags[field.key])) return;
-               var t = {};
-               t[field.key] = val || undefined;
-               dispatch$1.call('change', this, t, onInput);
-             };
-           }
-         }
-
-         function key(lang) {
-           return field.key + ':' + lang;
-         }

 
 

-         function changeLang(d3_event, d) {
-           var tags = {}; // make sure unrecognized suffixes are lowercase - #7156
+             lastPointerUpType = null;
+           }).call(tooltipBehavior);
+           buttons.each(function (d) {
+             select(this).call(svgIcon('#' + d.icon));
+           });
+           context.keybinding().on(commands[0].cmd, function (d3_event) {
+             d3_event.preventDefault();
+             if (editable()) commands[0].action();
+           }).on(commands[1].cmd, function (d3_event) {
+             d3_event.preventDefault();
+             if (editable()) commands[1].action();
+           });

 
 

-           var lang = utilGetSetValue(select(this)).toLowerCase();
+           var debouncedUpdate = debounce(update, 500, {
+             leading: true,
+             trailing: true
+           });

 
 

-           var language = _languagesArray.find(function (d) {
-             return d.label.toLowerCase() === lang || d.localName && d.localName.toLowerCase() === lang || d.nativeName && d.nativeName.toLowerCase() === lang;
+           context.map().on('move.undo_redo', debouncedUpdate).on('drawn.undo_redo', debouncedUpdate);
+           context.history().on('change.undo_redo', function (difference) {
+             if (difference) update();

            });
            });

+           context.on('enter.undo_redo', update);

 
 

-           if (language) lang = language.code;
+           function update() {
+             buttons.classed('disabled', function (d) {
+               return !editable() || !d.annotation();
+             }).each(function () {
+               var selection = select(this);

 
 

-           if (d.lang && d.lang !== lang) {
-             tags[key(d.lang)] = undefined;
+               if (!selection.select('.tooltip.in').empty()) {
+                 selection.call(tooltipBehavior.updateContent);
+               }
+             });

            }
            }

+         };

 
 

-           var newKey = lang && context.cleanTagKey(key(lang));
-           var value = utilGetSetValue(select(this.parentNode).selectAll('.localized-value'));
-
-           if (newKey && value) {
-             tags[newKey] = value;
-           } else if (newKey && _wikiTitles && _wikiTitles[d.lang]) {
-             tags[newKey] = _wikiTitles[d.lang];
-           }
+         tool.uninstall = function () {
+           context.keybinding().off(commands[0].cmd).off(commands[1].cmd);
+           context.map().on('move.undo_redo', null).on('drawn.undo_redo', null);
+           context.history().on('change.undo_redo', null);
+           context.on('enter.undo_redo', null);
+         };

 
 

-           d.lang = lang;
-           dispatch$1.call('change', this, tags);
-         }
+         return tool;
+       }

 
 

-         function changeValue(d3_event, d) {
-           if (!d.lang) return;
-           var value = context.cleanTagValue(utilGetSetValue(select(this))) || undefined; // don't override multiple values with blank string
+       function uiTopToolbar(context) {
+         var sidebarToggle = uiToolSidebarToggle(context),
+             modes = uiToolOldDrawModes(context),
+             notes = uiToolNotes(context),
+             undoRedo = uiToolUndoRedo(context),
+             save = uiToolSave(context);

 
 

-           if (!value && Array.isArray(d.value)) return;
-           var t = {};
-           t[key(d.lang)] = value;
-           d.value = value;
-           dispatch$1.call('change', this, t);
+         function notesEnabled() {
+           var noteLayer = context.layers().layer('notes');
+           return noteLayer && noteLayer.enabled();

          }
 
          }
 

-         function fetchLanguages(value, cb) {
-           var v = value.toLowerCase(); // show the user's language first
-
-           var langCodes = [_mainLocalizer.localeCode(), _mainLocalizer.languageCode()];
-
-           if (_countryCode && _territoryLanguages[_countryCode]) {
-             langCodes = langCodes.concat(_territoryLanguages[_countryCode]);
-           }
-
-           var langItems = [];
-           langCodes.forEach(function (code) {
-             var langItem = _languagesArray.find(function (item) {
-               return item.code === code;
-             });
-
-             if (langItem) langItems.push(langItem);
+         function topToolbar(bar) {
+           bar.on('wheel.topToolbar', function (d3_event) {
+             if (!d3_event.deltaX) {
+               // translate vertical scrolling into horizontal scrolling in case
+               // the user doesn't have an input device that can scroll horizontally
+               bar.node().scrollLeft += d3_event.deltaY;
+             }

            });
            });

-           langItems = utilArrayUniq(langItems.concat(_languagesArray));
-           cb(langItems.filter(function (d) {
-             return d.label.toLowerCase().indexOf(v) >= 0 || d.localName && d.localName.toLowerCase().indexOf(v) >= 0 || d.nativeName && d.nativeName.toLowerCase().indexOf(v) >= 0 || d.code.toLowerCase().indexOf(v) >= 0;
-           }).map(function (d) {
-             return {
-               value: d.label
-             };
-           }));
-         }

 
 

-         function renderMultilingual(selection) {
-           var entries = selection.selectAll('div.entry').data(_multilingual, function (d) {
-             return d.lang;
+           var debouncedUpdate = debounce(update, 500, {
+             leading: true,
+             trailing: true

            });
            });

-           entries.exit().style('top', '0').style('max-height', '240px').transition().duration(200).style('opacity', '0').style('max-height', '0px').remove();
-           var entriesEnter = entries.enter().append('div').attr('class', 'entry').each(function (_, index) {
-             var wrap = select(this);
-             var domId = utilUniqueDomId(index);
-             var label = wrap.append('label').attr('class', 'field-label').attr('for', domId);
-             var text = label.append('span').attr('class', 'label-text');
-             text.append('span').attr('class', 'label-textvalue').html(_t.html('translate.localized_translation_label'));
-             text.append('span').attr('class', 'label-textannotation');
-             label.append('button').attr('class', 'remove-icon-multilingual').on('click', function (d3_event, d) {
-               if (field.locked()) return;
-               d3_event.preventDefault();

 
 

-               if (!d.lang || !d.value) {
-                 _multilingual.splice(index, 1);
+           context.layers().on('change.topToolbar', debouncedUpdate);
+           update();
+
+           function update() {
+             var tools = [sidebarToggle, 'spacer', modes];
+             tools.push('spacer');

 
 

-                 renderMultilingual(selection);
-               } else {
-                 // remove from entity tags
-                 var t = {};
-                 t[key(d.lang)] = undefined;
-                 dispatch$1.call('change', this, t);
+             if (notesEnabled()) {
+               tools = tools.concat([notes, 'spacer']);
+             }
+
+             tools = tools.concat([undoRedo, save]);
+             var toolbarItems = bar.selectAll('.toolbar-item').data(tools, function (d) {
+               return d.id || d;
+             });
+             toolbarItems.exit().each(function (d) {
+               if (d.uninstall) {
+                 d.uninstall();

                }
                }

-             }).call(svgIcon('#iD-operation-delete'));
-             wrap.append('input').attr('class', 'localized-lang').attr('id', domId).attr('type', 'text').attr('placeholder', _t('translate.localized_translation_language')).on('blur', changeLang).on('change', changeLang).call(langCombo);
-             wrap.append('input').attr('type', 'text').attr('class', 'localized-value').on('blur', changeValue).on('change', changeValue);
-           });
-           entriesEnter.style('margin-top', '0px').style('max-height', '0px').style('opacity', '0').transition().duration(200).style('margin-top', '10px').style('max-height', '240px').style('opacity', '1').on('end', function () {
-             select(this).style('max-height', '').style('overflow', 'visible');
-           });
-           entries = entries.merge(entriesEnter);
-           entries.order();
-           entries.classed('present', function (d) {
-             return d.lang && d.value;
-           });
-           utilGetSetValue(entries.select('.localized-lang'), function (d) {
-             return _mainLocalizer.languageName(d.lang);
-           });
-           utilGetSetValue(entries.select('.localized-value'), function (d) {
-             return typeof d.value === 'string' ? d.value : '';
-           }).attr('title', function (d) {
-             return Array.isArray(d.value) ? d.value.filter(Boolean).join('\n') : null;
-           }).attr('placeholder', function (d) {
-             return Array.isArray(d.value) ? _t('inspector.multiple_values') : _t('translate.localized_translation_name');
-           }).classed('mixed', function (d) {
-             return Array.isArray(d.value);
-           });
+             }).remove();
+             var itemsEnter = toolbarItems.enter().append('div').attr('class', function (d) {
+               var classes = 'toolbar-item ' + (d.id || d).replace('_', '-');
+               if (d.klass) classes += ' ' + d.klass;
+               return classes;
+             });
+             var actionableItems = itemsEnter.filter(function (d) {
+               return d !== 'spacer';
+             });
+             actionableItems.append('div').attr('class', 'item-content').each(function (d) {
+               select(this).call(d.render, bar);
+             });
+             actionableItems.append('div').attr('class', 'item-label').html(function (d) {
+               return d.label;
+             });
+           }

          }
 
          }
 

-         localized.tags = function (tags) {
-           _tags = tags; // Fetch translations from wikipedia
+         return topToolbar;
+       }

 
 

-           if (typeof tags.wikipedia === 'string' && !_wikiTitles) {
-             _wikiTitles = {};
-             var wm = tags.wikipedia.match(/([^:]+):(.+)/);
+       var sawVersion = null;
+       var isNewVersion = false;
+       var isNewUser = false;
+       function uiVersion(context) {
+         var currVersion = context.version;
+         var matchedVersion = currVersion.match(/\d+\.\d+\.\d+.*/);

 
 

-             if (wm && wm[0] && wm[1]) {
-               wikipedia.translations(wm[1], wm[2], function (err, d) {
-                 if (err || !d) return;
-                 _wikiTitles = d;
-               });
-             }
+         if (sawVersion === null && matchedVersion !== null) {
+           if (corePreferences('sawVersion')) {
+             isNewUser = false;
+             isNewVersion = corePreferences('sawVersion') !== currVersion && currVersion.indexOf('-') === -1;
+           } else {
+             isNewUser = true;
+             isNewVersion = true;

            }
 
            }
 

-           var isMixed = Array.isArray(tags[field.key]);
-           utilGetSetValue(input, typeof tags[field.key] === 'string' ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder()).classed('mixed', isMixed);
-           calcMultilingual(tags);
+           corePreferences('sawVersion', currVersion);
+           sawVersion = currVersion;
+         }

 
 

-           _selection.call(localized);
+         return function (selection) {
+           selection.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD').html(currVersion); // only show new version indicator to users that have used iD before
+
+           if (isNewVersion && !isNewUser) {
+             selection.append('a').attr('class', 'badge').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/blob/release/CHANGELOG.md#whats-new').call(svgIcon('#maki-gift-11')).call(uiTooltip().title(_t.html('version.whats_new', {
+               version: currVersion
+             })).placement('top').scrollContainer(context.container().select('.main-footer-wrap')));
+           }

          };
          };

+       }
+
+       function uiZoom(context) {
+         var zooms = [{
+           id: 'zoom-in',
+           icon: 'iD-icon-plus',
+           title: _t.html('zoom.in'),
+           action: zoomIn,
+           disabled: function disabled() {
+             return !context.map().canZoomIn();
+           },
+           disabledTitle: _t.html('zoom.disabled.in'),
+           key: '+'
+         }, {
+           id: 'zoom-out',
+           icon: 'iD-icon-minus',
+           title: _t.html('zoom.out'),
+           action: zoomOut,
+           disabled: function disabled() {
+             return !context.map().canZoomOut();
+           },
+           disabledTitle: _t.html('zoom.disabled.out'),
+           key: '-'
+         }];

 
 

-         localized.focus = function () {
-           input.node().focus();
-         };
+         function zoomIn(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomIn();
+         }

 
 

-         localized.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _multilingual = [];
-           loadCountryCode();
-           return localized;
-         };
+         function zoomOut(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomOut();
+         }

 
 

-         function loadCountryCode() {
-           var extent = combinedEntityExtent();
-           var countryCode = extent && iso1A2Code(extent.center());
-           _countryCode = countryCode && countryCode.toLowerCase();
+         function zoomInFurther(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomInFurther();

          }
 
          }
 

-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         function zoomOutFurther(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomOutFurther();

          }
 
          }
 

-         return utilRebind(localized, dispatch$1, 'on');
-       }
+         return function (selection) {
+           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function (d) {
+             if (d.disabled()) {
+               return d.disabledTitle;
+             }

 
 

-       function uiFieldMaxspeed(field, context) {
-         var dispatch$1 = dispatch('change');
-         var unitInput = select(null);
-         var input = select(null);
-         var _entityIDs = [];
+             return d.title;
+           }).keys(function (d) {
+             return [d.key];
+           });
+           var lastPointerUpType;
+           var buttons = selection.selectAll('button').data(zooms).enter().append('button').attr('class', function (d) {
+             return d.id;
+           }).on('pointerup.editor', function (d3_event) {
+             lastPointerUpType = d3_event.pointerType;
+           }).on('click.editor', function (d3_event, d) {
+             if (!d.disabled()) {
+               d.action(d3_event);
+             } else if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
+               context.ui().flash.duration(2000).iconName('#' + d.icon).iconClass('disabled').label(d.disabledTitle)();
+             }

 
 

-         var _tags;
+             lastPointerUpType = null;
+           }).call(tooltipBehavior);
+           buttons.each(function (d) {
+             select(this).call(svgIcon('#' + d.icon, 'light'));
+           });
+           utilKeybinding.plusKeys.forEach(function (key) {
+             context.keybinding().on([key], zoomIn);
+             context.keybinding().on([uiCmd('⌥' + key)], zoomInFurther);
+           });
+           utilKeybinding.minusKeys.forEach(function (key) {
+             context.keybinding().on([key], zoomOut);
+             context.keybinding().on([uiCmd('⌥' + key)], zoomOutFurther);
+           });

 
 

-         var _isImperial;
+           function updateButtonStates() {
+             buttons.classed('disabled', function (d) {
+               return d.disabled();
+             }).each(function () {
+               var selection = select(this);

 
 

-         var speedCombo = uiCombobox(context, 'maxspeed');
-         var unitCombo = uiCombobox(context, 'maxspeed-unit').data(['km/h', 'mph'].map(comboValues));
-         var metricValues = [20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120];
-         var imperialValues = [5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80];
+               if (!selection.select('.tooltip.in').empty()) {
+                 selection.call(tooltipBehavior.updateContent);
+               }
+             });
+           }

 
 

-         function maxspeed(selection) {
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           input = wrap.selectAll('input.maxspeed-number').data([0]);
-           input = input.enter().append('input').attr('type', 'text').attr('class', 'maxspeed-number').attr('id', field.domId).call(utilNoAuto).call(speedCombo).merge(input);
-           input.on('change', change).on('blur', change);
-           var loc = combinedEntityExtent().center();
-           _isImperial = roadSpeedUnit(loc) === 'mph';
-           unitInput = wrap.selectAll('input.maxspeed-unit').data([0]);
-           unitInput = unitInput.enter().append('input').attr('type', 'text').attr('class', 'maxspeed-unit').call(unitCombo).merge(unitInput);
-           unitInput.on('blur', changeUnits).on('change', changeUnits);
+           updateButtonStates();
+           context.map().on('move.uiZoom', updateButtonStates);
+         };
+       }

 
 

-           function changeUnits() {
-             _isImperial = utilGetSetValue(unitInput) === 'mph';
-             utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
-             setUnitSuggestions();
-             change();
-           }
+       function uiZoomToSelection(context) {
+         function isDisabled() {
+           var mode = context.mode();
+           return !mode || !mode.zoomToSelected;

          }
 
          }
 

-         function setUnitSuggestions() {
-           speedCombo.data((_isImperial ? imperialValues : metricValues).map(comboValues));
-           utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
-         }
+         var _lastPointerUpType;

 
 

-         function comboValues(d) {
-           return {
-             value: d.toString(),
-             title: d.toString()
-           };
+         function pointerup(d3_event) {
+           _lastPointerUpType = d3_event.pointerType;

          }
 
          }
 

-         function change() {
-           var tag = {};
-           var value = utilGetSetValue(input).trim(); // don't override multiple values with blank string
-
-           if (!value && Array.isArray(_tags[field.key])) return;
+         function click(d3_event) {
+           d3_event.preventDefault();

 
 

-           if (!value) {
-             tag[field.key] = undefined;
-           } else if (isNaN(value) || !_isImperial) {
-             tag[field.key] = context.cleanTagValue(value);
+           if (isDisabled()) {
+             if (_lastPointerUpType === 'touch' || _lastPointerUpType === 'pen') {
+               context.ui().flash.duration(2000).iconName('#iD-icon-framed-dot').iconClass('disabled').label(_t.html('inspector.zoom_to.no_selection'))();
+             }

            } else {
            } else {

-             tag[field.key] = context.cleanTagValue(value + ' mph');
+             var mode = context.mode();
+
+             if (mode && mode.zoomToSelected) {
+               mode.zoomToSelected();
+             }

            }
 
            }
 

-           dispatch$1.call('change', this, tag);
+           _lastPointerUpType = null;

          }
 
          }
 

-         maxspeed.tags = function (tags) {
-           _tags = tags;
-           var value = tags[field.key];
-           var isMixed = Array.isArray(value);
+         return function (selection) {
+           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function () {
+             if (isDisabled()) {
+               return _t.html('inspector.zoom_to.no_selection');
+             }

 
 

-           if (!isMixed) {
-             if (value && value.indexOf('mph') >= 0) {
-               value = parseInt(value, 10).toString();
-               _isImperial = true;
-             } else if (value) {
-               _isImperial = false;
+             return _t.html('inspector.zoom_to.title');
+           }).keys([_t('inspector.zoom_to.key')]);
+           var button = selection.append('button').on('pointerup', pointerup).on('click', click).call(svgIcon('#iD-icon-framed-dot', 'light')).call(tooltipBehavior);
+
+           function setEnabledState() {
+             button.classed('disabled', isDisabled());
+
+             if (!button.select('.tooltip.in').empty()) {
+               button.call(tooltipBehavior.updateContent);

              }
            }
 
              }
            }
 

-           setUnitSuggestions();
-           utilGetSetValue(input, typeof value === 'string' ? value : '').attr('title', isMixed ? value.filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder()).classed('mixed', isMixed);
+           context.on('enter.uiZoomToSelection', setEnabledState);
+           setEnabledState();

          };
          };

+       }

 
 

-         maxspeed.focus = function () {
-           input.node().focus();
-         };
+       function uiPane(id, context) {
+         var _key;

 
 

-         maxspeed.entityIDs = function (val) {
-           _entityIDs = val;
-         };
+         var _label = '';
+         var _description = '';
+         var _iconName = '';

 
 

-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
-         }
+         var _sections; // array of uiSection objects

 
 

-         return utilRebind(maxspeed, dispatch$1, 'on');
-       }

 
 

-       function uiFieldRadio(field, context) {
-         var dispatch$1 = dispatch('change');
-         var placeholder = select(null);
-         var wrap = select(null);
-         var labels = select(null);
-         var radios = select(null);
-         var radioData = (field.options || field.strings && field.strings.options && Object.keys(field.strings.options) || field.keys).slice(); // shallow copy
+         var _paneSelection = select(null);

 
 

-         var typeField;
-         var layerField;
-         var _oldType = {};
-         var _entityIDs = [];
+         var _paneTooltip;

 
 

-         function selectedKey() {
-           var node = wrap.selectAll('.form-field-input-radio label.active input');
-           return !node.empty() && node.datum();
-         }
+         var pane = {
+           id: id
+         };

 
 

-         function radio(selection) {
-           selection.classed('preset-radio', true);
-           wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           var enter = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-radio');
-           enter.append('span').attr('class', 'placeholder');
-           wrap = wrap.merge(enter);
-           placeholder = wrap.selectAll('.placeholder');
-           labels = wrap.selectAll('label').data(radioData);
-           enter = labels.enter().append('label');
-           enter.append('input').attr('type', 'radio').attr('name', field.id).attr('value', function (d) {
-             return field.t('options.' + d, {
-               'default': d
-             });
-           }).attr('checked', false);
-           enter.append('span').html(function (d) {
-             return field.t.html('options.' + d, {
-               'default': d
-             });
-           });
-           labels = labels.merge(enter);
-           radios = labels.selectAll('input').on('change', changeRadio);
-         }
+         pane.label = function (val) {
+           if (!arguments.length) return _label;
+           _label = val;
+           return pane;
+         };

 
 

-         function structureExtras(selection, tags) {
-           var selected = selectedKey() || tags.layer !== undefined;
-           var type = _mainPresetIndex.field(selected);
-           var layer = _mainPresetIndex.field('layer');
-           var showLayer = selected === 'bridge' || selected === 'tunnel' || tags.layer !== undefined;
-           var extrasWrap = selection.selectAll('.structure-extras-wrap').data(selected ? [0] : []);
-           extrasWrap.exit().remove();
-           extrasWrap = extrasWrap.enter().append('div').attr('class', 'structure-extras-wrap').merge(extrasWrap);
-           var list = extrasWrap.selectAll('ul').data([0]);
-           list = list.enter().append('ul').attr('class', 'rows').merge(list); // Type
+         pane.key = function (val) {
+           if (!arguments.length) return _key;
+           _key = val;
+           return pane;
+         };

 
 

-           if (type) {
-             if (!typeField || typeField.id !== selected) {
-               typeField = uiField(context, type, _entityIDs, {
-                 wrap: false
-               }).on('change', changeType);
-             }
+         pane.description = function (val) {
+           if (!arguments.length) return _description;
+           _description = val;
+           return pane;
+         };

 
 

-             typeField.tags(tags);
-           } else {
-             typeField = null;
-           }
+         pane.iconName = function (val) {
+           if (!arguments.length) return _iconName;
+           _iconName = val;
+           return pane;
+         };

 
 

-           var typeItem = list.selectAll('.structure-type-item').data(typeField ? [typeField] : [], function (d) {
-             return d.id;
-           }); // Exit
+         pane.sections = function (val) {
+           if (!arguments.length) return _sections;
+           _sections = val;
+           return pane;
+         };

 
 

-           typeItem.exit().remove(); // Enter
+         pane.selection = function () {
+           return _paneSelection;
+         };

 
 

-           var typeEnter = typeItem.enter().insert('li', ':first-child').attr('class', 'labeled-input structure-type-item');
-           typeEnter.append('span').attr('class', 'label structure-label-type').attr('for', 'preset-input-' + selected).html(_t.html('inspector.radio.structure.type'));
-           typeEnter.append('div').attr('class', 'structure-input-type-wrap'); // Update
+         function hidePane() {
+           context.ui().togglePanes();
+         }

 
 

-           typeItem = typeItem.merge(typeEnter);
+         pane.togglePane = function (d3_event) {
+           if (d3_event) d3_event.preventDefault();

 
 

-           if (typeField) {
-             typeItem.selectAll('.structure-input-type-wrap').call(typeField.render);
-           } // Layer
+           _paneTooltip.hide();

 
 

+           context.ui().togglePanes(!_paneSelection.classed('shown') ? _paneSelection : undefined);
+         };

 
 

-           if (layer && showLayer) {
-             if (!layerField) {
-               layerField = uiField(context, layer, _entityIDs, {
-                 wrap: false
-               }).on('change', changeLayer);
-             }
+         pane.renderToggleButton = function (selection) {
+           if (!_paneTooltip) {
+             _paneTooltip = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(_description).keys([_key]);
+           }

 
 

-             layerField.tags(tags);
-             field.keys = utilArrayUnion(field.keys, ['layer']);
-           } else {
-             layerField = null;
-             field.keys = field.keys.filter(function (k) {
-               return k !== 'layer';
+           selection.append('button').on('click', pane.togglePane).call(svgIcon('#' + _iconName, 'light')).call(_paneTooltip);
+         };
+
+         pane.renderContent = function (selection) {
+           // override to fully customize content
+           if (_sections) {
+             _sections.forEach(function (section) {
+               selection.call(section.render);

              });
            }
              });
            }

+         };

 
 

-           var layerItem = list.selectAll('.structure-layer-item').data(layerField ? [layerField] : []); // Exit
+         pane.renderPane = function (selection) {
+           _paneSelection = selection.append('div').attr('class', 'fillL map-pane hide ' + id + '-pane').attr('pane', id);

 
 

-           layerItem.exit().remove(); // Enter
+           var heading = _paneSelection.append('div').attr('class', 'pane-heading');

 
 

-           var layerEnter = layerItem.enter().append('li').attr('class', 'labeled-input structure-layer-item');
-           layerEnter.append('span').attr('class', 'label structure-label-layer').attr('for', 'preset-input-layer').html(_t.html('inspector.radio.structure.layer'));
-           layerEnter.append('div').attr('class', 'structure-input-layer-wrap'); // Update
+           heading.append('h2').html(_label);
+           heading.append('button').on('click', hidePane).call(svgIcon('#iD-icon-close'));

 
 

-           layerItem = layerItem.merge(layerEnter);
+           _paneSelection.append('div').attr('class', 'pane-content').call(pane.renderContent);

 
 

-           if (layerField) {
-             layerItem.selectAll('.structure-input-layer-wrap').call(layerField.render);
+           if (_key) {
+             context.keybinding().on(_key, pane.togglePane);

            }
            }

-         }
+         };

 
 

-         function changeType(t, onInput) {
-           var key = selectedKey();
-           if (!key) return;
-           var val = t[key];
+         return pane;
+       }

 
 

-           if (val !== 'no') {
-             _oldType[key] = val;
-           }
+       function uiSectionBackgroundDisplayOptions(context) {
+         var section = uiSection('background-display-options', context).label(_t.html('background.display_options')).disclosureContent(renderDisclosureContent);

 
 

-           if (field.type === 'structureRadio') {
-             // remove layer if it should not be set
-             if (val === 'no' || key !== 'bridge' && key !== 'tunnel' || key === 'tunnel' && val === 'building_passage') {
-               t.layer = undefined;
-             } // add layer if it should be set
+         var _detected = utilDetect();

 
 

+         var _storedOpacity = corePreferences('background-opacity');

 
 

-             if (t.layer === undefined) {
-               if (key === 'bridge' && val !== 'no') {
-                 t.layer = '1';
-               }
+         var _minVal = 0;

 
 

-               if (key === 'tunnel' && val !== 'no' && val !== 'building_passage') {
-                 t.layer = '-1';
-               }
-             }
-           }
+         var _maxVal = _detected.cssfilters ? 3 : 1;

 
 

-           dispatch$1.call('change', this, t, onInput);
-         }
+         var _sliders = _detected.cssfilters ? ['brightness', 'contrast', 'saturation', 'sharpness'] : ['brightness'];

 
 

-         function changeLayer(t, onInput) {
-           if (t.layer === '0') {
-             t.layer = undefined;
-           }
+         var _options = {
+           brightness: _storedOpacity !== null ? +_storedOpacity : 1,
+           contrast: 1,
+           saturation: 1,
+           sharpness: 1
+         };

 
 

-           dispatch$1.call('change', this, t, onInput);
+         function clamp(x, min, max) {
+           return Math.max(min, Math.min(x, max));

          }
 
          }
 

-         function changeRadio() {
-           var t = {};
-           var activeKey;
-
-           if (field.key) {
-             t[field.key] = undefined;
-           }
-
-           radios.each(function (d) {
-             var active = select(this).property('checked');
-             if (active) activeKey = d;
-
-             if (field.key) {
-               if (active) t[field.key] = d;
-             } else {
-               var val = _oldType[activeKey] || 'yes';
-               t[d] = active ? val : undefined;
-             }
-           });
+         function updateValue(d, val) {
+           val = clamp(val, _minVal, _maxVal);
+           _options[d] = val;
+           context.background()[d](val);

 
 

-           if (field.type === 'structureRadio') {
-             if (activeKey === 'bridge') {
-               t.layer = '1';
-             } else if (activeKey === 'tunnel' && t.tunnel !== 'building_passage') {
-               t.layer = '-1';
-             } else {
-               t.layer = undefined;
-             }
+           if (d === 'brightness') {
+             corePreferences('background-opacity', val);

            }
 
            }
 

-           dispatch$1.call('change', this, t);
+           section.reRender();

          }
 
          }
 

-         radio.tags = function (tags) {
-           radios.property('checked', function (d) {
-             if (field.key) {
-               return tags[field.key] === d;
-             }
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.display-options-container').data([0]);
+           var containerEnter = container.enter().append('div').attr('class', 'display-options-container controls-list'); // add slider controls

 
 

-             return !!(typeof tags[d] === 'string' && tags[d].toLowerCase() !== 'no');
+           var slidersEnter = containerEnter.selectAll('.display-control').data(_sliders).enter().append('div').attr('class', function (d) {
+             return 'display-control display-control-' + d;

            });
            });

+           slidersEnter.append('h5').html(function (d) {
+             return _t.html('background.' + d);
+           }).append('span').attr('class', function (d) {
+             return 'display-option-value display-option-value-' + d;
+           });
+           var sildersControlEnter = slidersEnter.append('div').attr('class', 'control-wrap');
+           sildersControlEnter.append('input').attr('class', function (d) {
+             return 'display-option-input display-option-input-' + d;
+           }).attr('type', 'range').attr('min', _minVal).attr('max', _maxVal).attr('step', '0.05').on('input', function (d3_event, d) {
+             var val = select(this).property('value');

 
 

-           function isMixed(d) {
-             if (field.key) {
-               return Array.isArray(tags[field.key]) && tags[field.key].includes(d);
-             }
-
-             return Array.isArray(tags[d]);
-           }
-
-           labels.classed('active', function (d) {
-             if (field.key) {
-               return Array.isArray(tags[field.key]) && tags[field.key].includes(d) || tags[field.key] === d;
+             if (!val && d3_event && d3_event.target) {
+               val = d3_event.target.value;

              }
 
              }
 

-             return Array.isArray(tags[d]) || !!(tags[d] && tags[d].toLowerCase() !== 'no');
-           }).classed('mixed', isMixed).attr('title', function (d) {
-             return isMixed(d) ? _t('inspector.unshared_value_tooltip') : null;
-           });
-           var selection = radios.filter(function () {
-             return this.checked;
+             updateValue(d, val);

            });
            });

+           sildersControlEnter.append('button').attr('title', _t('background.reset')).attr('class', function (d) {
+             return 'display-option-reset display-option-reset-' + d;
+           }).on('click', function (d3_event, d) {
+             if (d3_event.button !== 0) return;
+             updateValue(d, 1);
+           }).call(svgIcon('#iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo'))); // reset all button

 
 

-           if (selection.empty()) {
-             placeholder.html(_t.html('inspector.none'));
-           } else {
-             placeholder.html(selection.attr('value'));
-             _oldType[selection.datum()] = tags[selection.datum()];
-           }
+           containerEnter.append('a').attr('class', 'display-option-resetlink').attr('href', '#').html(_t.html('background.reset_all')).on('click', function (d3_event) {
+             d3_event.preventDefault();

 
 

-           if (field.type === 'structureRadio') {
-             // For waterways without a tunnel tag, set 'culvert' as
-             // the _oldType to default to if the user picks 'tunnel'
-             if (!!tags.waterway && !_oldType.tunnel) {
-               _oldType.tunnel = 'culvert';
+             for (var i = 0; i < _sliders.length; i++) {
+               updateValue(_sliders[i], 1);

              }
              }

+           }); // update

 
 

-             wrap.call(structureExtras, tags);
-           }
-         };
-
-         radio.focus = function () {
-           radios.node().focus();
-         };
-
-         radio.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _oldType = {};
-           return radio;
-         };
+           container = containerEnter.merge(container);
+           container.selectAll('.display-option-input').property('value', function (d) {
+             return _options[d];
+           });
+           container.selectAll('.display-option-value').html(function (d) {
+             return Math.floor(_options[d] * 100) + '%';
+           });
+           container.selectAll('.display-option-reset').classed('disabled', function (d) {
+             return _options[d] === 1;
+           }); // first time only, set brightness if needed

 
 

-         radio.isAllowed = function () {
-           return _entityIDs.length === 1;
-         };
+           if (containerEnter.size() && _options.brightness !== 1) {
+             context.background().brightness(_options.brightness);
+           }
+         }

 
 

-         return utilRebind(radio, dispatch$1, 'on');
+         return section;

        }
 
        }
 

-       function uiFieldRestrictions(field, context) {
-         var dispatch$1 = dispatch('change');
-         var breathe = behaviorBreathe();
-         corePreferences('turn-restriction-via-way', null); // remove old key
+       function uiSettingsCustomBackground() {
+         var dispatch = dispatch$8('change');

 
 

-         var storedViaWay = corePreferences('turn-restriction-via-way0'); // use new key #6922
+         function render(selection) {
+           // keep separate copies of original and current settings
+           var _origSettings = {
+             template: corePreferences('background-custom-template')
+           };
+           var _currSettings = {
+             template: corePreferences('background-custom-template')
+           };
+           var example = 'https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png';
+           var modal = uiConfirm(selection).okButton();
+           modal.classed('settings-modal settings-custom-background', true);
+           modal.select('.modal-section.header').append('h3').html(_t.html('settings.custom_background.header'));
+           var textSection = modal.select('.modal-section.message-text');
+           var instructions = "".concat(_t.html('settings.custom_background.instructions.info'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.wms.tokens_label'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.proj'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.wkid'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.dimensions'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.bbox'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.tms.tokens_label'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.xyz'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.flipped_y'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.switch'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.quadtile'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.scale_factor'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.example'), "\n") + "`".concat(example, "`");
+           textSection.append('div').attr('class', 'instructions-template').html(marked_1(instructions));
+           textSection.append('textarea').attr('class', 'field-template').attr('placeholder', _t('settings.custom_background.template.placeholder')).call(utilNoAuto).property('value', _currSettings.template); // insert a cancel button

 
 

-         var storedDistance = corePreferences('turn-restriction-distance');
+           var buttonSection = modal.select('.modal-section.buttons');
+           buttonSection.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
+           buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
+           buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);

 
 

-         var _maxViaWay = storedViaWay !== null ? +storedViaWay : 0;
+           function isSaveDisabled() {
+             return null;
+           } // restore the original template

 
 

-         var _maxDistance = storedDistance ? +storedDistance : 30;

 
 

-         var _initialized = false;
+           function clickCancel() {
+             textSection.select('.field-template').property('value', _origSettings.template);
+             corePreferences('background-custom-template', _origSettings.template);
+             this.blur();
+             modal.close();
+           } // accept the current template

 
 

-         var _parent = select(null); // the entire field

 
 

+           function clickSave() {
+             _currSettings.template = textSection.select('.field-template').property('value');
+             corePreferences('background-custom-template', _currSettings.template);
+             this.blur();
+             modal.close();
+             dispatch.call('change', this, _currSettings);
+           }
+         }

 
 

-         var _container = select(null); // just the map
+         return utilRebind(render, dispatch, 'on');
+       }

 
 

+       function uiSectionBackgroundList(context) {
+         var _backgroundList = select(null);

 
 

-         var _oldTurns;
+         var _customSource = context.background().findSource('custom');

 
 

-         var _graph;
+         var _settingsCustomBackground = uiSettingsCustomBackground().on('change', customChanged);

 
 

-         var _vertexID;
+         var section = uiSection('background-list', context).label(_t.html('background.backgrounds')).disclosureContent(renderDisclosureContent);

 
 

-         var _intersection;
+         function previousBackgroundID() {
+           return corePreferences('background-last-used-toggle');
+         }

 
 

-         var _fromWayID;
+         function renderDisclosureContent(selection) {
+           // the background list
+           var container = selection.selectAll('.layer-background-list').data([0]);
+           _backgroundList = container.enter().append('ul').attr('class', 'layer-list layer-background-list').attr('dir', 'auto').merge(container); // add minimap toggle below list

 
 

-         var _lastXPos;
+           var bgExtrasListEnter = selection.selectAll('.bg-extras-list').data([0]).enter().append('ul').attr('class', 'layer-list bg-extras-list');
+           var minimapLabelEnter = bgExtrasListEnter.append('li').attr('class', 'minimap-toggle-item').append('label').call(uiTooltip().title(_t.html('background.minimap.tooltip')).keys([_t('background.minimap.key')]).placement('top'));
+           minimapLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
+             d3_event.preventDefault();
+             uiMapInMap.toggle();
+           });
+           minimapLabelEnter.append('span').html(_t.html('background.minimap.description'));
+           var panelLabelEnter = bgExtrasListEnter.append('li').attr('class', 'background-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('background.panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.background.key'))]).placement('top'));
+           panelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
+             d3_event.preventDefault();
+             context.ui().info.toggle('background');
+           });
+           panelLabelEnter.append('span').html(_t.html('background.panel.description'));
+           var locPanelLabelEnter = bgExtrasListEnter.append('li').attr('class', 'location-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('background.location_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.location.key'))]).placement('top'));
+           locPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
+             d3_event.preventDefault();
+             context.ui().info.toggle('location');
+           });
+           locPanelLabelEnter.append('span').html(_t.html('background.location_panel.description')); // "Info / Report a Problem" link

 
 

-         function restrictions(selection) {
-           _parent = selection; // try to reuse the intersection, but always rebuild it if the graph has changed
+           selection.selectAll('.imagery-faq').data([0]).enter().append('div').attr('class', 'imagery-faq').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/openstreetmap/iD/blob/develop/FAQ.md#how-can-i-report-an-issue-with-background-imagery').append('span').html(_t.html('background.imagery_problem_faq'));

 
 

-           if (_vertexID && (context.graph() !== _graph || !_intersection)) {
-             _graph = context.graph();
-             _intersection = osmIntersection(_graph, _vertexID, _maxDistance);
-           } // It's possible for there to be no actual intersection here.
-           // for example, a vertex of two `highway=path`
-           // In this case, hide the field.
+           _backgroundList.call(drawListItems, 'radio', function (d3_event, d) {
+             chooseBackground(d);
+           }, function (d) {
+             return !d.isHidden() && !d.overlay;
+           });
+         }

 
 

+         function setTooltips(selection) {
+           selection.each(function (d, i, nodes) {
+             var item = select(this).select('label');
+             var span = item.select('span');
+             var placement = i < nodes.length / 2 ? 'bottom' : 'top';
+             var description = d.description();
+             var isOverflowing = span.property('clientWidth') !== span.property('scrollWidth');
+             item.call(uiTooltip().destroyAny);

 
 

-           var isOK = _intersection && _intersection.vertices.length && // has vertices
-           _intersection.vertices // has the vertex that the user selected
-           .filter(function (vertex) {
-             return vertex.id === _vertexID;
-           }).length && _intersection.ways.length > 2 && // has more than 2 ways
-           _intersection.ways // has more than 1 TO way
-           .filter(function (way) {
-             return way.__to;
-           }).length > 1; // Also hide in the case where
+             if (d.id === previousBackgroundID()) {
+               item.call(uiTooltip().placement(placement).title('<div>' + _t.html('background.switch') + '</div>').keys([uiCmd('⌘' + _t('background.key'))]));
+             } else if (description || isOverflowing) {
+               item.call(uiTooltip().placement(placement).title(description || d.label()));
+             }
+           });
+         }

 
 

-           select(selection.node().parentNode).classed('hide', !isOK); // if form field is hidden or has detached from dom, clean up.
+         function drawListItems(layerList, type, change, filter) {
+           var sources = context.background().sources(context.map().extent(), context.map().zoom(), true).filter(filter).sort(function (a, b) {
+             return a.best() && !b.best() ? -1 : b.best() && !a.best() ? 1 : d3_descending(a.area(), b.area()) || d3_ascending(a.name(), b.name()) || 0;
+           });
+           var layerLinks = layerList.selectAll('li') // We have to be a bit inefficient about reordering the list since
+           // arrow key navigation of radio values likes to work in the order
+           // they were added, not the display document order.
+           .data(sources, function (d, i) {
+             return d.id + '---' + i;
+           });
+           layerLinks.exit().remove();
+           var enter = layerLinks.enter().append('li').classed('layer-custom', function (d) {
+             return d.id === 'custom';
+           }).classed('best', function (d) {
+             return d.best();
+           });
+           var label = enter.append('label');
+           label.append('input').attr('type', type).attr('name', 'background-layer').attr('value', function (d) {
+             return d.id;
+           }).on('change', change);
+           label.append('span').html(function (d) {
+             return d.label();
+           });
+           enter.filter(function (d) {
+             return d.id === 'custom';
+           }).append('button').attr('class', 'layer-browse').call(uiTooltip().title(_t.html('settings.custom_background.tooltip')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             editCustom();
+           }).call(svgIcon('#iD-icon-more'));
+           enter.filter(function (d) {
+             return d.best();
+           }).append('div').attr('class', 'best').call(uiTooltip().title(_t.html('background.best_imagery')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).append('span').html('&#9733;');
+           layerList.call(updateLayerSelections);
+         }

 
 

-           if (!isOK || !context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode || !selection.node().parentNode.parentNode) {
-             selection.call(restrictions.off);
-             return;
+         function updateLayerSelections(selection) {
+           function active(d) {
+             return context.background().showsLayer(d);

            }
 
            }
 

-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           var container = wrap.selectAll('.restriction-container').data([0]); // enter
-
-           var containerEnter = container.enter().append('div').attr('class', 'restriction-container');
-           containerEnter.append('div').attr('class', 'restriction-help'); // update
+           selection.selectAll('li').classed('active', active).classed('switch', function (d) {
+             return d.id === previousBackgroundID();
+           }).call(setTooltips).selectAll('input').property('checked', active);
+         }

 
 

-           _container = containerEnter.merge(container).call(renderViewer);
-           var controls = wrap.selectAll('.restriction-controls').data([0]); // enter/update
+         function chooseBackground(d) {
+           if (d.id === 'custom' && !d.template()) {
+             return editCustom();
+           }

 
 

-           controls.enter().append('div').attr('class', 'restriction-controls-container').append('div').attr('class', 'restriction-controls').merge(controls).call(renderControls);
+           var previousBackground = context.background().baseLayerSource();
+           corePreferences('background-last-used-toggle', previousBackground.id);
+           corePreferences('background-last-used', d.id);
+           context.background().baseLayerSource(d);

          }
 
          }
 

-         function renderControls(selection) {
-           var distControl = selection.selectAll('.restriction-distance').data([0]);
-           distControl.exit().remove();
-           var distControlEnter = distControl.enter().append('div').attr('class', 'restriction-control restriction-distance');
-           distControlEnter.append('span').attr('class', 'restriction-control-label restriction-distance-label').html(_t.html('restriction.controls.distance') + ':');
-           distControlEnter.append('input').attr('class', 'restriction-distance-input').attr('type', 'range').attr('min', '20').attr('max', '50').attr('step', '5');
-           distControlEnter.append('span').attr('class', 'restriction-distance-text'); // update
+         function customChanged(d) {
+           if (d && d.template) {
+             _customSource.template(d.template);

 
 

-           selection.selectAll('.restriction-distance-input').property('value', _maxDistance).on('input', function () {
-             var val = select(this).property('value');
-             _maxDistance = +val;
-             _intersection = null;
+             chooseBackground(_customSource);
+           } else {
+             _customSource.template('');

 
 

-             _container.selectAll('.layer-osm .layer-turns *').remove();
+             chooseBackground(context.background().findSource('none'));
+           }
+         }

 
 

-             corePreferences('turn-restriction-distance', _maxDistance);
+         function editCustom() {
+           context.container().call(_settingsCustomBackground);
+         }

 
 

-             _parent.call(restrictions);
-           });
-           selection.selectAll('.restriction-distance-text').html(displayMaxDistance(_maxDistance));
-           var viaControl = selection.selectAll('.restriction-via-way').data([0]);
-           viaControl.exit().remove();
-           var viaControlEnter = viaControl.enter().append('div').attr('class', 'restriction-control restriction-via-way');
-           viaControlEnter.append('span').attr('class', 'restriction-control-label restriction-via-way-label').html(_t.html('restriction.controls.via') + ':');
-           viaControlEnter.append('input').attr('class', 'restriction-via-way-input').attr('type', 'range').attr('min', '0').attr('max', '2').attr('step', '1');
-           viaControlEnter.append('span').attr('class', 'restriction-via-way-text'); // update
+         context.background().on('change.background_list', function () {
+           _backgroundList.call(updateLayerSelections);
+         });
+         context.map().on('move.background_list', debounce(function () {
+           // layers in-view may have changed due to map move
+           window.requestIdleCallback(section.reRender);
+         }, 1000));
+         return section;
+       }

 
 

-           selection.selectAll('.restriction-via-way-input').property('value', _maxViaWay).on('input', function () {
-             var val = select(this).property('value');
-             _maxViaWay = +val;
+       function uiSectionBackgroundOffset(context) {
+         var section = uiSection('background-offset', context).label(_t.html('background.fix_misalignment')).disclosureContent(renderDisclosureContent).expandedByDefault(false);

 
 

-             _container.selectAll('.layer-osm .layer-turns *').remove();
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-             corePreferences('turn-restriction-via-way0', _maxViaWay);
+         var _directions = [['top', [0, -0.5]], ['left', [-0.5, 0]], ['right', [0.5, 0]], ['bottom', [0, 0.5]]];

 
 

-             _parent.call(restrictions);
+         function updateValue() {
+           var meters = geoOffsetToMeters(context.background().offset());
+           var x = +meters[0].toFixed(2);
+           var y = +meters[1].toFixed(2);
+           context.container().selectAll('.nudge-inner-rect').select('input').classed('error', false).property('value', x + ', ' + y);
+           context.container().selectAll('.nudge-reset').classed('disabled', function () {
+             return x === 0 && y === 0;

            });
            });

-           selection.selectAll('.restriction-via-way-text').html(displayMaxVia(_maxViaWay));

          }
 
          }
 

-         function renderViewer(selection) {
-           if (!_intersection) return;
-           var vgraph = _intersection.graph;
-           var filter = utilFunctor(true);
-           var projection = geoRawMercator(); // Reflow warning: `utilGetDimensions` calls `getBoundingClientRect`
-           // Instead of asking the restriction-container for its dimensions,
-           //  we can ask the .sidebar, which can have its dimensions cached.
-           // width: calc as sidebar - padding
-           // height: hardcoded (from `80_app.css`)
-           // var d = utilGetDimensions(selection);
+         function resetOffset() {
+           context.background().offset([0, 0]);
+           updateValue();
+         }

 
 

-           var sdims = utilGetDimensions(context.container().select('.sidebar'));
-           var d = [sdims[0] - 50, 370];
-           var c = geoVecScale(d, 0.5);
-           var z = 22;
-           projection.scale(geoZoomToScale(z)); // Calculate extent of all key vertices
+         function nudge(d) {
+           context.background().nudge(d, context.map().zoom());
+           updateValue();
+         }

 
 

-           var extent = geoExtent();
+         function inputOffset() {
+           var input = select(this);
+           var d = input.node().value;
+           if (d === '') return resetOffset();
+           d = d.replace(/;/g, ',').split(',').map(function (n) {
+             // if n is NaN, it will always get mapped to false.
+             return !isNaN(n) && n;
+           });

 
 

-           for (var i = 0; i < _intersection.vertices.length; i++) {
-             extent._extend(_intersection.vertices[i].extent());
-           } // If this is a large intersection, adjust zoom to fit extent
+           if (d.length !== 2 || !d[0] || !d[1]) {
+             input.classed('error', true);
+             return;
+           }

 
 

+           context.background().offset(geoMetersToOffset(d));
+           updateValue();
+         }

 
 

-           if (_intersection.vertices.length > 1) {
-             var padding = 180; // in z22 pixels
+         function dragOffset(d3_event) {
+           if (d3_event.button !== 0) return;
+           var origin = [d3_event.clientX, d3_event.clientY];
+           var pointerId = d3_event.pointerId || 'mouse';
+           context.container().append('div').attr('class', 'nudge-surface');
+           select(window).on(_pointerPrefix + 'move.drag-bg-offset', pointermove).on(_pointerPrefix + 'up.drag-bg-offset', pointerup);

 
 

-             var tl = projection([extent[0][0], extent[1][1]]);
-             var br = projection([extent[1][0], extent[0][1]]);
-             var hFactor = (br[0] - tl[0]) / (d[0] - padding);
-             var vFactor = (br[1] - tl[1]) / (d[1] - padding);
-             var hZoomDiff = Math.log(Math.abs(hFactor)) / Math.LN2;
-             var vZoomDiff = Math.log(Math.abs(vFactor)) / Math.LN2;
-             z = z - Math.max(hZoomDiff, vZoomDiff);
-             projection.scale(geoZoomToScale(z));
+           if (_pointerPrefix === 'pointer') {
+             select(window).on('pointercancel.drag-bg-offset', pointerup);

            }
 
            }
 

-           var padTop = 35; // reserve top space for hint text
+           function pointermove(d3_event) {
+             if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+             var latest = [d3_event.clientX, d3_event.clientY];
+             var d = [-(origin[0] - latest[0]) / 4, -(origin[1] - latest[1]) / 4];
+             origin = latest;
+             nudge(d);
+           }

 
 

-           var extentCenter = projection(extent.center());
-           extentCenter[1] = extentCenter[1] - padTop;
-           projection.translate(geoVecSubtract(c, extentCenter)).clipExtent([[0, 0], d]);
-           var drawLayers = svgLayers(projection, context).only(['osm', 'touch']).dimensions(d);
-           var drawVertices = svgVertices(projection, context);
-           var drawLines = svgLines(projection, context);
-           var drawTurns = svgTurns(projection, context);
-           var firstTime = selection.selectAll('.surface').empty();
-           selection.call(drawLayers);
-           var surface = selection.selectAll('.surface').classed('tr', true);
+           function pointerup(d3_event) {
+             if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+             if (d3_event.button !== 0) return;
+             context.container().selectAll('.nudge-surface').remove();
+             select(window).on('.drag-bg-offset', null);
+           }
+         }

 
 

-           if (firstTime) {
-             _initialized = true;
-             surface.call(breathe);
-           } // This can happen if we've lowered the detail while a FROM way
-           // is selected, and that way is no longer part of the intersection.
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.nudge-container').data([0]);
+           var containerEnter = container.enter().append('div').attr('class', 'nudge-container');
+           containerEnter.append('div').attr('class', 'nudge-instructions').html(_t.html('background.offset'));
+           var nudgeWrapEnter = containerEnter.append('div').attr('class', 'nudge-controls-wrap');
+           var nudgeEnter = nudgeWrapEnter.append('div').attr('class', 'nudge-outer-rect').on(_pointerPrefix + 'down', dragOffset);
+           nudgeEnter.append('div').attr('class', 'nudge-inner-rect').append('input').attr('type', 'text').on('change', inputOffset);
+           nudgeWrapEnter.append('div').selectAll('button').data(_directions).enter().append('button').attr('class', function (d) {
+             return d[0] + ' nudge';
+           }).on('click', function (d3_event, d) {
+             nudge(d[1]);
+           });
+           nudgeWrapEnter.append('button').attr('title', _t('background.reset')).attr('class', 'nudge-reset disabled').on('click', function (d3_event) {
+             d3_event.preventDefault();
+             resetOffset();
+           }).call(svgIcon('#iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo')));
+           updateValue();
+         }

 
 

+         context.background().on('change.backgroundOffset-update', updateValue);
+         return section;
+       }

 
 

-           if (_fromWayID && !vgraph.hasEntity(_fromWayID)) {
-             _fromWayID = null;
-             _oldTurns = null;
-           }
+       function uiSectionOverlayList(context) {
+         var section = uiSection('overlay-list', context).label(_t.html('background.overlays')).disclosureContent(renderDisclosureContent);

 
 

-           surface.call(utilSetDimensions, d).call(drawVertices, vgraph, _intersection.vertices, filter, extent, z).call(drawLines, vgraph, _intersection.ways, filter).call(drawTurns, vgraph, _intersection.turns(_fromWayID, _maxViaWay));
-           surface.on('click.restrictions', click).on('mouseover.restrictions', mouseover);
-           surface.selectAll('.selected').classed('selected', false);
-           surface.selectAll('.related').classed('related', false);
-           var way;
+         var _overlayList = select(null);

 
 

-           if (_fromWayID) {
-             way = vgraph.entity(_fromWayID);
-             surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
-           }
+         function setTooltips(selection) {
+           selection.each(function (d, i, nodes) {
+             var item = select(this).select('label');
+             var span = item.select('span');
+             var placement = i < nodes.length / 2 ? 'bottom' : 'top';
+             var description = d.description();
+             var isOverflowing = span.property('clientWidth') !== span.property('scrollWidth');
+             item.call(uiTooltip().destroyAny);

 
 

-           document.addEventListener('resizeWindow', function () {
-             utilSetDimensions(_container, null);
-             redraw(1);
-           }, false);
-           updateHints(null);
+             if (description || isOverflowing) {
+               item.call(uiTooltip().placement(placement).title(description || d.name()));
+             }
+           });
+         }

 
 

-           function click(d3_event) {
-             surface.call(breathe.off).call(breathe);
-             var datum = d3_event.target.__data__;
-             var entity = datum && datum.properties && datum.properties.entity;
+         function updateLayerSelections(selection) {
+           function active(d) {
+             return context.background().showsLayer(d);
+           }

 
 

-             if (entity) {
-               datum = entity;
-             }
+           selection.selectAll('li').classed('active', active).call(setTooltips).selectAll('input').property('checked', active);
+         }

 
 

-             if (datum instanceof osmWay && (datum.__from || datum.__via)) {
-               _fromWayID = datum.id;
-               _oldTurns = null;
-               redraw();
-             } else if (datum instanceof osmTurn) {
-               var actions, extraActions, turns, i;
-               var restrictionType = osmInferRestriction(vgraph, datum, projection);
+         function chooseOverlay(d3_event, d) {
+           d3_event.preventDefault();
+           context.background().toggleOverlayLayer(d);

 
 

-               if (datum.restrictionID && !datum.direct) {
-                 return;
-               } else if (datum.restrictionID && !datum.only) {
-                 // NO -> ONLY
-                 var seen = {};
-                 var datumOnly = JSON.parse(JSON.stringify(datum)); // deep clone the datum
+           _overlayList.call(updateLayerSelections);

 
 

-                 datumOnly.only = true; // but change this property
+           document.activeElement.blur();
+         }

 
 

-                 restrictionType = restrictionType.replace(/^no/, 'only'); // Adding an ONLY restriction should destroy all other direct restrictions from the FROM towards the VIA.
-                 // We will remember them in _oldTurns, and restore them if the user clicks again.
+         function drawListItems(layerList, type, change, filter) {
+           var sources = context.background().sources(context.map().extent(), context.map().zoom(), true).filter(filter);
+           var layerLinks = layerList.selectAll('li').data(sources, function (d) {
+             return d.name();
+           });
+           layerLinks.exit().remove();
+           var enter = layerLinks.enter().append('li');
+           var label = enter.append('label');
+           label.append('input').attr('type', type).attr('name', 'layers').on('change', change);
+           label.append('span').html(function (d) {
+             return d.label();
+           });
+           layerList.selectAll('li').sort(sortSources);
+           layerList.call(updateLayerSelections);

 
 

-                 turns = _intersection.turns(_fromWayID, 2);
-                 extraActions = [];
-                 _oldTurns = [];
+           function sortSources(a, b) {
+             return a.best() && !b.best() ? -1 : b.best() && !a.best() ? 1 : d3_descending(a.area(), b.area()) || d3_ascending(a.name(), b.name()) || 0;
+           }
+         }

 
 

-                 for (i = 0; i < turns.length; i++) {
-                   var turn = turns[i];
-                   if (seen[turn.restrictionID]) continue; // avoid deleting the turn twice (#4968, #4928)
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.layer-overlay-list').data([0]);
+           _overlayList = container.enter().append('ul').attr('class', 'layer-list layer-overlay-list').attr('dir', 'auto').merge(container);

 
 

-                   if (turn.direct && turn.path[1] === datum.path[1]) {
-                     seen[turns[i].restrictionID] = true;
-                     turn.restrictionType = osmInferRestriction(vgraph, turn, projection);
+           _overlayList.call(drawListItems, 'checkbox', chooseOverlay, function (d) {
+             return !d.isHidden() && d.overlay;
+           });
+         }

 
 

-                     _oldTurns.push(turn);
+         context.map().on('move.overlay_list', debounce(function () {
+           // layers in-view may have changed due to map move
+           window.requestIdleCallback(section.reRender);
+         }, 1000));
+         return section;
+       }

 
 

-                     extraActions.push(actionUnrestrictTurn(turn));
-                   }
-                 }
+       function uiPaneBackground(context) {
+         var backgroundPane = uiPane('background', context).key(_t('background.key')).label(_t.html('background.title')).description(_t.html('background.description')).iconName('iD-icon-layers').sections([uiSectionBackgroundList(context), uiSectionOverlayList(context), uiSectionBackgroundDisplayOptions(context), uiSectionBackgroundOffset(context)]);
+         return backgroundPane;
+       }
+
+       function uiPaneHelp(context) {
+         var docKeys = [['help', ['welcome', 'open_data_h', 'open_data', 'before_start_h', 'before_start', 'open_source_h', 'open_source', 'open_source_help']], ['overview', ['navigation_h', 'navigation_drag', 'navigation_zoom', 'features_h', 'features', 'nodes_ways']], ['editing', ['select_h', 'select_left_click', 'select_right_click', 'select_space', 'multiselect_h', 'multiselect', 'multiselect_shift_click', 'multiselect_lasso', 'undo_redo_h', 'undo_redo', 'save_h', 'save', 'save_validation', 'upload_h', 'upload', 'backups_h', 'backups', 'keyboard_h', 'keyboard']], ['feature_editor', ['intro', 'definitions', 'type_h', 'type', 'type_picker', 'fields_h', 'fields_all_fields', 'fields_example', 'fields_add_field', 'tags_h', 'tags_all_tags', 'tags_resources']], ['points', ['intro', 'add_point_h', 'add_point', 'add_point_finish', 'move_point_h', 'move_point', 'delete_point_h', 'delete_point', 'delete_point_command']], ['lines', ['intro', 'add_line_h', 'add_line', 'add_line_draw', 'add_line_continue', 'add_line_finish', 'modify_line_h', 'modify_line_dragnode', 'modify_line_addnode', 'connect_line_h', 'connect_line', 'connect_line_display', 'connect_line_drag', 'connect_line_tag', 'disconnect_line_h', 'disconnect_line_command', 'move_line_h', 'move_line_command', 'move_line_connected', 'delete_line_h', 'delete_line', 'delete_line_command']], ['areas', ['intro', 'point_or_area_h', 'point_or_area', 'add_area_h', 'add_area_command', 'add_area_draw', 'add_area_continue', 'add_area_finish', 'square_area_h', 'square_area_command', 'modify_area_h', 'modify_area_dragnode', 'modify_area_addnode', 'delete_area_h', 'delete_area', 'delete_area_command']], ['relations', ['intro', 'edit_relation_h', 'edit_relation', 'edit_relation_add', 'edit_relation_delete', 'maintain_relation_h', 'maintain_relation', 'relation_types_h', 'multipolygon_h', 'multipolygon', 'multipolygon_create', 'multipolygon_merge', 'turn_restriction_h', 'turn_restriction', 'turn_restriction_field', 'turn_restriction_editing', 'route_h', 'route', 'route_add', 'boundary_h', 'boundary', 'boundary_add']], ['operations', ['intro', 'intro_2', 'straighten', 'orthogonalize', 'circularize', 'move', 'rotate', 'reflect', 'continue', 'reverse', 'disconnect', 'split', 'extract', 'merge', 'delete', 'downgrade', 'copy_paste']], ['notes', ['intro', 'add_note_h', 'add_note', 'place_note', 'move_note', 'update_note_h', 'update_note', 'save_note_h', 'save_note']], ['imagery', ['intro', 'sources_h', 'choosing', 'sources', 'offsets_h', 'offset', 'offset_change']], ['streetlevel', ['intro', 'using_h', 'using', 'photos', 'viewer']], ['gps', ['intro', 'survey', 'using_h', 'using', 'tracing', 'upload']], ['qa', ['intro', 'tools_h', 'tools', 'issues_h', 'issues']]];
+         var headings = {
+           'help.help.open_data_h': 3,
+           'help.help.before_start_h': 3,
+           'help.help.open_source_h': 3,
+           'help.overview.navigation_h': 3,
+           'help.overview.features_h': 3,
+           'help.editing.select_h': 3,
+           'help.editing.multiselect_h': 3,
+           'help.editing.undo_redo_h': 3,
+           'help.editing.save_h': 3,
+           'help.editing.upload_h': 3,
+           'help.editing.backups_h': 3,
+           'help.editing.keyboard_h': 3,
+           'help.feature_editor.type_h': 3,
+           'help.feature_editor.fields_h': 3,
+           'help.feature_editor.tags_h': 3,
+           'help.points.add_point_h': 3,
+           'help.points.move_point_h': 3,
+           'help.points.delete_point_h': 3,
+           'help.lines.add_line_h': 3,
+           'help.lines.modify_line_h': 3,
+           'help.lines.connect_line_h': 3,
+           'help.lines.disconnect_line_h': 3,
+           'help.lines.move_line_h': 3,
+           'help.lines.delete_line_h': 3,
+           'help.areas.point_or_area_h': 3,
+           'help.areas.add_area_h': 3,
+           'help.areas.square_area_h': 3,
+           'help.areas.modify_area_h': 3,
+           'help.areas.delete_area_h': 3,
+           'help.relations.edit_relation_h': 3,
+           'help.relations.maintain_relation_h': 3,
+           'help.relations.relation_types_h': 2,
+           'help.relations.multipolygon_h': 3,
+           'help.relations.turn_restriction_h': 3,
+           'help.relations.route_h': 3,
+           'help.relations.boundary_h': 3,
+           'help.notes.add_note_h': 3,
+           'help.notes.update_note_h': 3,
+           'help.notes.save_note_h': 3,
+           'help.imagery.sources_h': 3,
+           'help.imagery.offsets_h': 3,
+           'help.streetlevel.using_h': 3,
+           'help.gps.using_h': 3,
+           'help.qa.tools_h': 3,
+           'help.qa.issues_h': 3
+         }; // For each section, squash all the texts into a single markdown document

 
 

-                 actions = _intersection.actions.concat(extraActions, [actionRestrictTurn(datumOnly, restrictionType), _t('operations.restriction.annotation.create')]);
-               } else if (datum.restrictionID) {
-                 // ONLY -> Allowed
-                 // Restore whatever restrictions we might have destroyed by cycling thru the ONLY state.
-                 // This relies on the assumption that the intersection was already split up when we
-                 // performed the previous action (NO -> ONLY), so the IDs in _oldTurns shouldn't have changed.
-                 turns = _oldTurns || [];
-                 extraActions = [];
+         var docs = docKeys.map(function (key) {
+           var helpkey = 'help.' + key[0];
+           var helpPaneReplacements = {
+             version: context.version
+           };
+           var text = key[1].reduce(function (all, part) {
+             var subkey = helpkey + '.' + part;
+             var depth = headings[subkey]; // is this subkey a heading?

 
 

-                 for (i = 0; i < turns.length; i++) {
-                   if (turns[i].key !== datum.key) {
-                     extraActions.push(actionRestrictTurn(turns[i], turns[i].restrictionType));
-                   }
-                 }
+             var hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s

 
 

-                 _oldTurns = null;
-                 actions = _intersection.actions.concat(extraActions, [actionUnrestrictTurn(datum), _t('operations.restriction.annotation.delete')]);
-               } else {
-                 // Allowed -> NO
-                 actions = _intersection.actions.concat([actionRestrictTurn(datum, restrictionType), _t('operations.restriction.annotation.create')]);
-               }
+             return all + hhh + helpHtml(subkey, helpPaneReplacements) + '\n\n';
+           }, '');
+           return {
+             title: _t.html(helpkey + '.title'),
+             content: marked_1(text.trim()) // use keyboard key styling for shortcuts
+             .replace(/<code>/g, '<kbd>').replace(/<\/code>/g, '<\/kbd>')
+           };
+         });
+         var helpPane = uiPane('help', context).key(_t('help.key')).label(_t.html('help.title')).description(_t.html('help.title')).iconName('iD-icon-help');

 
 

-               context.perform.apply(context, actions); // At this point the datum will be changed, but will have same key..
-               // Refresh it and update the help..
+         helpPane.renderContent = function (content) {
+           function clickHelp(d, i) {
+             var rtl = _mainLocalizer.textDirection() === 'rtl';
+             content.property('scrollTop', 0);
+             helpPane.selection().select('.pane-heading h2').html(d.title);
+             body.html(d.content);
+             body.selectAll('a').attr('target', '_blank');
+             menuItems.classed('selected', function (m) {
+               return m.title === d.title;
+             });
+             nav.html('');

 
 

-               var s = surface.selectAll('.' + datum.key);
-               datum = s.empty() ? null : s.datum();
-               updateHints(datum);
+             if (rtl) {
+               nav.call(drawNext).call(drawPrevious);

              } else {
              } else {

-               _fromWayID = null;
-               _oldTurns = null;
-               redraw();
+               nav.call(drawPrevious).call(drawNext);

              }
              }

-           }
-
-           function mouseover(d3_event) {
-             var datum = d3_event.target.__data__;
-             updateHints(datum);
-           }
-
-           _lastXPos = _lastXPos || sdims[0];
-
-           function redraw(minChange) {
-             var xPos = -1;

 
 

-             if (minChange) {
-               xPos = utilGetDimensions(context.container().select('.sidebar'))[0];
+             function drawNext(selection) {
+               if (i < docs.length - 1) {
+                 var nextLink = selection.append('a').attr('href', '#').attr('class', 'next').on('click', function (d3_event) {
+                   d3_event.preventDefault();
+                   clickHelp(docs[i + 1], i + 1);
+                 });
+                 nextLink.append('span').html(docs[i + 1].title).call(svgIcon(rtl ? '#iD-icon-backward' : '#iD-icon-forward', 'inline'));
+               }

              }
 
              }
 

-             if (!minChange || minChange && Math.abs(xPos - _lastXPos) >= minChange) {
-               if (context.hasEntity(_vertexID)) {
-                 _lastXPos = xPos;
-
-                 _container.call(renderViewer);
+             function drawPrevious(selection) {
+               if (i > 0) {
+                 var prevLink = selection.append('a').attr('href', '#').attr('class', 'previous').on('click', function (d3_event) {
+                   d3_event.preventDefault();
+                   clickHelp(docs[i - 1], i - 1);
+                 });
+                 prevLink.call(svgIcon(rtl ? '#iD-icon-forward' : '#iD-icon-backward', 'inline')).append('span').html(docs[i - 1].title);

                }
              }
            }
 
                }
              }
            }
 

-           function highlightPathsFrom(wayID) {
-             surface.selectAll('.related').classed('related', false).classed('allow', false).classed('restrict', false).classed('only', false);
-             surface.selectAll('.' + wayID).classed('related', true);
-
-             if (wayID) {
-               var turns = _intersection.turns(wayID, _maxViaWay);
-
-               for (var i = 0; i < turns.length; i++) {
-                 var turn = turns[i];
-                 var ids = [turn.to.way];
-                 var klass = turn.no ? 'restrict' : turn.only ? 'only' : 'allow';
-
-                 if (turn.only || turns.length === 1) {
-                   if (turn.via.ways) {
-                     ids = ids.concat(turn.via.ways);
-                   }
-                 } else if (turn.to.way === wayID) {
-                   continue;
-                 }
+           function clickWalkthrough(d3_event) {
+             d3_event.preventDefault();
+             if (context.inIntro()) return;
+             context.container().call(uiIntro(context));
+             context.ui().togglePanes();
+           }

 
 

-                 surface.selectAll(utilEntitySelector(ids)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only');
-               }
-             }
+           function clickShortcuts(d3_event) {
+             d3_event.preventDefault();
+             context.container().call(context.ui().shortcuts, true);

            }
 
            }
 

-           function updateHints(datum) {
-             var help = _container.selectAll('.restriction-help').html('');
+           var toc = content.append('ul').attr('class', 'toc');
+           var menuItems = toc.selectAll('li').data(docs).enter().append('li').append('a').attr('href', '#').html(function (d) {
+             return d.title;
+           }).on('click', function (d3_event, d) {
+             d3_event.preventDefault();
+             clickHelp(d, docs.indexOf(d));
+           });
+           var shortcuts = toc.append('li').attr('class', 'shortcuts').call(uiTooltip().title(_t.html('shortcuts.tooltip')).keys(['?']).placement('top')).append('a').attr('href', '#').on('click', clickShortcuts);
+           shortcuts.append('div').html(_t.html('shortcuts.title'));
+           var walkthrough = toc.append('li').attr('class', 'walkthrough').append('a').attr('href', '#').on('click', clickWalkthrough);
+           walkthrough.append('svg').attr('class', 'logo logo-walkthrough').append('use').attr('xlink:href', '#iD-logo-walkthrough');
+           walkthrough.append('div').html(_t.html('splash.walkthrough'));
+           var helpContent = content.append('div').attr('class', 'left-content');
+           var body = helpContent.append('div').attr('class', 'body');
+           var nav = helpContent.append('div').attr('class', 'nav');
+           clickHelp(docs[0], 0);
+         };

 
 

-             var placeholders = {};
-             ['from', 'via', 'to'].forEach(function (k) {
-               placeholders[k] = '<span class="qualifier">' + _t('restriction.help.' + k) + '</span>';
-             });
-             var entity = datum && datum.properties && datum.properties.entity;
+         return helpPane;
+       }

 
 

-             if (entity) {
-               datum = entity;
-             }
+       function uiSectionValidationIssues(id, severity, context) {
+         var _issues = [];
+         var section = uiSection(id, context).label(function () {
+           if (!_issues) return '';
+           var issueCountText = _issues.length > 1000 ? '1000+' : String(_issues.length);
+           return _t('inspector.title_count', {
+             title: _t.html('issues.' + severity + 's.list_title'),
+             count: issueCountText
+           });
+         }).disclosureContent(renderDisclosureContent).shouldDisplay(function () {
+           return _issues && _issues.length;
+         });

 
 

-             if (_fromWayID) {
-               way = vgraph.entity(_fromWayID);
-               surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
-             } // Hovering a way
+         function getOptions() {
+           return {
+             what: corePreferences('validate-what') || 'edited',
+             where: corePreferences('validate-where') || 'all'
+           };
+         } // get and cache the issues to display, unordered

 
 
 
 

-             if (datum instanceof osmWay && datum.__from) {
-               way = datum;
-               highlightPathsFrom(_fromWayID ? null : way.id);
-               surface.selectAll('.' + way.id).classed('related', true);
-               var clickSelect = !_fromWayID || _fromWayID !== way.id;
-               help.append('div') // "Click to select FROM {fromName}." / "FROM {fromName}"
-               .html(_t.html('restriction.help.' + (clickSelect ? 'select_from_name' : 'from_name'), {
-                 from: placeholders.from,
-                 fromName: displayName(way.id, vgraph)
-               })); // Hovering a turn arrow
-             } else if (datum instanceof osmTurn) {
-               var restrictionType = osmInferRestriction(vgraph, datum, projection);
-               var turnType = restrictionType.replace(/^(only|no)\_/, '');
-               var indirect = datum.direct === false ? _t.html('restriction.help.indirect') : '';
-               var klass, turnText, nextText;
+         function reloadIssues() {
+           _issues = context.validator().getIssuesBySeverity(getOptions())[severity];
+         }

 
 

-               if (datum.no) {
-                 klass = 'restrict';
-                 turnText = _t.html('restriction.help.turn.no_' + turnType, {
-                   indirect: indirect
-                 });
-                 nextText = _t.html('restriction.help.turn.only_' + turnType, {
-                   indirect: ''
-                 });
-               } else if (datum.only) {
-                 klass = 'only';
-                 turnText = _t.html('restriction.help.turn.only_' + turnType, {
-                   indirect: indirect
-                 });
-                 nextText = _t.html('restriction.help.turn.allowed_' + turnType, {
-                   indirect: ''
-                 });
-               } else {
-                 klass = 'allow';
-                 turnText = _t.html('restriction.help.turn.allowed_' + turnType, {
-                   indirect: indirect
-                 });
-                 nextText = _t.html('restriction.help.turn.no_' + turnType, {
-                   indirect: ''
-                 });
-               }
+         function renderDisclosureContent(selection) {
+           var center = context.map().center();
+           var graph = context.graph(); // sort issues by distance away from the center of the map

 
 

-               help.append('div') // "NO Right Turn (indirect)"
-               .attr('class', 'qualifier ' + klass).html(turnText);
-               help.append('div') // "FROM {fromName} TO {toName}"
-               .html(_t.html('restriction.help.from_name_to_name', {
-                 from: placeholders.from,
-                 fromName: displayName(datum.from.way, vgraph),
-                 to: placeholders.to,
-                 toName: displayName(datum.to.way, vgraph)
-               }));
+           var issues = _issues.map(function withDistance(issue) {
+             var extent = issue.extent(graph);
+             var dist = extent ? geoSphericalDistance(center, extent.center()) : 0;
+             return Object.assign(issue, {
+               dist: dist
+             });
+           }).sort(function byDistance(a, b) {
+             return a.dist - b.dist;
+           }); // cut off at 1000

 
 

-               if (datum.via.ways && datum.via.ways.length) {
-                 var names = [];

 
 

-                 for (var i = 0; i < datum.via.ways.length; i++) {
-                   var prev = names[names.length - 1];
-                   var curr = displayName(datum.via.ways[i], vgraph);
-                   if (!prev || curr !== prev) // collapse identical names
-                     names.push(curr);
-                 }
+           issues = issues.slice(0, 1000); //renderIgnoredIssuesReset(_warningsSelection);

 
 

-                 help.append('div') // "VIA {viaNames}"
-                 .html(_t.html('restriction.help.via_names', {
-                   via: placeholders.via,
-                   viaNames: names.join(', ')
-                 }));
-               }
+           selection.call(drawIssuesList, issues);
+         }

 
 

-               if (!indirect) {
-                 help.append('div') // Click for "No Right Turn"
-                 .html(_t.html('restriction.help.toggle', {
-                   turn: nextText.trim()
-                 }));
-               }
+         function drawIssuesList(selection, issues) {
+           var list = selection.selectAll('.issues-list').data([0]);
+           list = list.enter().append('ul').attr('class', 'layer-list issues-list ' + severity + 's-list').merge(list);
+           var items = list.selectAll('li').data(issues, function (d) {
+             return d.key;
+           }); // Exit

 
 

-               highlightPathsFrom(null);
-               var alongIDs = datum.path.slice();
-               surface.selectAll(utilEntitySelector(alongIDs)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only'); // Hovering empty surface
-             } else {
-               highlightPathsFrom(null);
+           items.exit().remove(); // Enter

 
 

-               if (_fromWayID) {
-                 help.append('div') // "FROM {fromName}"
-                 .html(_t.html('restriction.help.from_name', {
-                   from: placeholders.from,
-                   fromName: displayName(_fromWayID, vgraph)
-                 }));
-               } else {
-                 help.append('div') // "Click to select a FROM segment."
-                 .html(_t.html('restriction.help.select_from', {
-                   from: placeholders.from
-                 }));
-               }
-             }
+           var itemsEnter = items.enter().append('li').attr('class', function (d) {
+             return 'issue severity-' + d.severity;
+           });
+           var labelsEnter = itemsEnter.append('button').attr('class', 'issue-label').on('click', function (d3_event, d) {
+             context.validator().focusIssue(d);
+           }).on('mouseover', function (d3_event, d) {
+             utilHighlightEntities(d.entityIds, true, context);
+           }).on('mouseout', function (d3_event, d) {
+             utilHighlightEntities(d.entityIds, false, context);
+           });
+           var textEnter = labelsEnter.append('span').attr('class', 'issue-text');
+           textEnter.append('span').attr('class', 'issue-icon').each(function (d) {
+             var iconName = '#iD-icon-' + (d.severity === 'warning' ? 'alert' : 'error');
+             select(this).call(svgIcon(iconName));
+           });
+           textEnter.append('span').attr('class', 'issue-message');
+           /*
+           labelsEnter
+               .append('span')
+               .attr('class', 'issue-autofix')
+               .each(function(d) {
+                   if (!d.autoFix) return;
+                    d3_select(this)
+                       .append('button')
+                       .attr('title', t('issues.fix_one.title'))
+                       .datum(d.autoFix)  // set button datum to the autofix
+                       .attr('class', 'autofix action')
+                       .on('click', function(d3_event, d) {
+                           d3_event.preventDefault();
+                           d3_event.stopPropagation();
+                            var issuesEntityIDs = d.issue.entityIds;
+                           utilHighlightEntities(issuesEntityIDs.concat(d.entityIds), false, context);
+                            context.perform.apply(context, d.autoArgs);
+                           context.validator().validate();
+                       })
+                       .call(svgIcon('#iD-icon-wrench'));
+               });
+           */
+           // Update
+
+           items = items.merge(itemsEnter).order();
+           items.selectAll('.issue-message').html(function (d) {
+             return d.message(context);
+           });
+           /*
+           // autofix
+           var canAutoFix = issues.filter(function(issue) { return issue.autoFix; });
+            var autoFixAll = selection.selectAll('.autofix-all')
+               .data(canAutoFix.length ? [0] : []);
+            // exit
+           autoFixAll.exit()
+               .remove();
+            // enter
+           var autoFixAllEnter = autoFixAll.enter()
+               .insert('div', '.issues-list')
+               .attr('class', 'autofix-all');
+            var linkEnter = autoFixAllEnter
+               .append('a')
+               .attr('class', 'autofix-all-link')
+               .attr('href', '#');
+            linkEnter
+               .append('span')
+               .attr('class', 'autofix-all-link-text')
+               .html(t.html('issues.fix_all.title'));
+            linkEnter
+               .append('span')
+               .attr('class', 'autofix-all-link-icon')
+               .call(svgIcon('#iD-icon-wrench'));
+            if (severity === 'warning') {
+               renderIgnoredIssuesReset(selection);

            }
            }

+            // update
+           autoFixAll = autoFixAll
+               .merge(autoFixAllEnter);
+            autoFixAll.selectAll('.autofix-all-link')
+               .on('click', function() {
+                   context.pauseChangeDispatch();
+                   context.perform(actionNoop());
+                   canAutoFix.forEach(function(issue) {
+                       var args = issue.autoFix.autoArgs.slice();  // copy
+                       if (typeof args[args.length - 1] !== 'function') {
+                           args.pop();
+                       }
+                       args.push(t('issues.fix_all.annotation'));
+                       context.replace.apply(context, args);
+                   });
+                   context.resumeChangeDispatch();
+                   context.validator().validate();
+               });
+           */

          }
 
          }
 

-         function displayMaxDistance(maxDist) {
-           var isImperial = !_mainLocalizer.usesMetric();
-           var opts;
+         context.validator().on('validated.uiSectionValidationIssues' + id, function () {
+           window.requestIdleCallback(function () {
+             reloadIssues();
+             section.reRender();
+           });
+         });
+         context.map().on('move.uiSectionValidationIssues' + id, debounce(function () {
+           window.requestIdleCallback(function () {
+             if (getOptions().where === 'visible') {
+               // must refetch issues if they are viewport-dependent
+               reloadIssues();
+             } // always reload list to re-sort-by-distance

 
 

-           if (isImperial) {
-             var distToFeet = {
-               // imprecise conversion for prettier display
-               20: 70,
-               25: 85,
-               30: 100,
-               35: 115,
-               40: 130,
-               45: 145,
-               50: 160
-             }[maxDist];
-             opts = {
-               distance: _t('units.feet', {
-                 quantity: distToFeet
-               })
-             };
-           } else {
-             opts = {
-               distance: _t('units.meters', {
-                 quantity: maxDist
-               })
-             };
-           }

 
 

-           return _t.html('restriction.controls.distance_up_to', opts);
-         }
+             section.reRender();
+           });
+         }, 1000));
+         return section;
+       }

 
 

-         function displayMaxVia(maxVia) {
-           return maxVia === 0 ? _t.html('restriction.controls.via_node_only') : maxVia === 1 ? _t.html('restriction.controls.via_up_to_one') : _t.html('restriction.controls.via_up_to_two');
-         }
+       function uiSectionValidationOptions(context) {
+         var section = uiSection('issues-options', context).content(renderContent);

 
 

-         function displayName(entityID, graph) {
-           var entity = graph.entity(entityID);
-           var name = utilDisplayName(entity) || '';
-           var matched = _mainPresetIndex.match(entity, graph);
-           var type = matched && matched.name() || utilDisplayType(entity.id);
-           return name || type;
+         function renderContent(selection) {
+           var container = selection.selectAll('.issues-options-container').data([0]);
+           container = container.enter().append('div').attr('class', 'issues-options-container').merge(container);
+           var data = [{
+             key: 'what',
+             values: ['edited', 'all']
+           }, {
+             key: 'where',
+             values: ['visible', 'all']
+           }];
+           var options = container.selectAll('.issues-option').data(data, function (d) {
+             return d.key;
+           });
+           var optionsEnter = options.enter().append('div').attr('class', function (d) {
+             return 'issues-option issues-option-' + d.key;
+           });
+           optionsEnter.append('div').attr('class', 'issues-option-title').html(function (d) {
+             return _t.html('issues.options.' + d.key + '.title');
+           });
+           var valuesEnter = optionsEnter.selectAll('label').data(function (d) {
+             return d.values.map(function (val) {
+               return {
+                 value: val,
+                 key: d.key
+               };
+             });
+           }).enter().append('label');
+           valuesEnter.append('input').attr('type', 'radio').attr('name', function (d) {
+             return 'issues-option-' + d.key;
+           }).attr('value', function (d) {
+             return d.value;
+           }).property('checked', function (d) {
+             return getOptions()[d.key] === d.value;
+           }).on('change', function (d3_event, d) {
+             updateOptionValue(d3_event, d.key, d.value);
+           });
+           valuesEnter.append('span').html(function (d) {
+             return _t.html('issues.options.' + d.key + '.' + d.value);
+           });

          }
 
          }
 

-         restrictions.entityIDs = function (val) {
-           _intersection = null;
-           _fromWayID = null;
-           _oldTurns = null;
-           _vertexID = val[0];
-         };
+         function getOptions() {
+           return {
+             what: corePreferences('validate-what') || 'edited',
+             // 'all', 'edited'
+             where: corePreferences('validate-where') || 'all' // 'all', 'visible'

 
 

-         restrictions.tags = function () {};
+           };
+         }

 
 

-         restrictions.focus = function () {};
+         function updateOptionValue(d3_event, d, val) {
+           if (!val && d3_event && d3_event.target) {
+             val = d3_event.target.value;
+           }

 
 

-         restrictions.off = function (selection) {
-           if (!_initialized) return;
-           selection.selectAll('.surface').call(breathe.off).on('click.restrictions', null).on('mouseover.restrictions', null);
-           select(window).on('resize.restrictions', null);
-         };
+           corePreferences('validate-' + d, val);
+           context.validator().validate();
+         }

 
 

-         return utilRebind(restrictions, dispatch$1, 'on');
+         return section;

        }
        }

-       uiFieldRestrictions.supportsMultiselection = false;

 
 

-       function uiFieldTextarea(field, context) {
-         var dispatch$1 = dispatch('change');
-         var input = select(null);
+       function uiSectionValidationRules(context) {
+         var MINSQUARE = 0;
+         var MAXSQUARE = 20;
+         var DEFAULTSQUARE = 5; // see also unsquare_way.js

 
 

-         var _tags;
+         var section = uiSection('issues-rules', context).disclosureContent(renderDisclosureContent).label(_t.html('issues.rules.title'));

 
 

-         function textarea(selection) {
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           input = wrap.selectAll('textarea').data([0]);
-           input = input.enter().append('textarea').attr('id', field.domId).call(utilNoAuto).on('input', change(true)).on('blur', change()).on('change', change()).merge(input);
-         }
+         var _ruleKeys = context.validator().getRuleKeys().filter(function (key) {
+           return key !== 'maprules';
+         }).sort(function (key1, key2) {
+           // alphabetize by localized title
+           return _t('issues.' + key1 + '.title') < _t('issues.' + key2 + '.title') ? -1 : 1;
+         });

 
 

-         function change(onInput) {
-           return function () {
-             var val = utilGetSetValue(input);
-             if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.issues-rulelist-container').data([0]);
+           var containerEnter = container.enter().append('div').attr('class', 'issues-rulelist-container');
+           containerEnter.append('ul').attr('class', 'layer-list issue-rules-list');
+           var ruleLinks = containerEnter.append('div').attr('class', 'issue-rules-links section-footer');
+           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('href', '#').html(_t.html('issues.disable_all')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.validator().disableRules(_ruleKeys);
+           });
+           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('href', '#').html(_t.html('issues.enable_all')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.validator().disableRules([]);
+           }); // Update

 
 

-             if (!val && Array.isArray(_tags[field.key])) return;
-             var t = {};
-             t[field.key] = val || undefined;
-             dispatch$1.call('change', this, t, onInput);
-           };
+           container = container.merge(containerEnter);
+           container.selectAll('.issue-rules-list').call(drawListItems, _ruleKeys, 'checkbox', 'rule', toggleRule, isRuleEnabled);

          }
 
          }
 

-         textarea.tags = function (tags) {
-           _tags = tags;
-           var isMixed = Array.isArray(tags[field.key]);
-           utilGetSetValue(input, !isMixed && tags[field.key] ? tags[field.key] : '').attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : undefined).attr('placeholder', isMixed ? _t('inspector.multiple_values') : field.placeholder() || _t('inspector.unknown')).classed('mixed', isMixed);
-         };
+         function drawListItems(selection, data, type, name, change, active) {
+           var items = selection.selectAll('li').data(data); // Exit

 
 

-         textarea.focus = function () {
-           input.node().focus();
-         };
+           items.exit().remove(); // Enter

 
 

-         return utilRebind(textarea, dispatch$1, 'on');
-       }
+           var enter = items.enter().append('li');

 
 

-       function uiFieldWikidata(field, context) {
-         var wikidata = services.wikidata;
-         var dispatch$1 = dispatch('change');
+           if (name === 'rule') {
+             enter.call(uiTooltip().title(function (d) {
+               return _t.html('issues.' + d + '.tip');
+             }).placement('top'));
+           }

 
 

-         var _selection = select(null);
+           var label = enter.append('label');
+           label.append('input').attr('type', type).attr('name', name).on('change', change);
+           label.append('span').html(function (d) {
+             var params = {};

 
 

-         var _searchInput = select(null);
+             if (d === 'unsquare_way') {
+               params.val = '<span class="square-degrees"></span>';
+             }

 
 

-         var _qid = null;
-         var _wikidataEntity = null;
-         var _wikiURL = '';
-         var _entityIDs = [];
+             return _t.html('issues.' + d + '.title', params);
+           }); // Update

 
 

-         var _wikipediaKey = field.keys && field.keys.find(function (key) {
-           return key.includes('wikipedia');
-         }),
-             _hintKey = field.key === 'wikidata' ? 'name' : field.key.split(':')[0];
+           items = items.merge(enter);
+           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', false); // user-configurable square threshold

 
 

-         var combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(true).minItems(1);
+           var degStr = corePreferences('validate-square-degrees');

 
 

-         function wiki(selection) {
-           _selection = selection;
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', 'form-field-input-wrap form-field-input-' + field.type).merge(wrap);
-           var list = wrap.selectAll('ul').data([0]);
-           list = list.enter().append('ul').attr('class', 'rows').merge(list);
-           var searchRow = list.selectAll('li.wikidata-search').data([0]);
-           var searchRowEnter = searchRow.enter().append('li').attr('class', 'wikidata-search');
-           searchRowEnter.append('input').attr('type', 'text').attr('id', field.domId).style('flex', '1').call(utilNoAuto).on('focus', function () {
-             var node = select(this).node();
-             node.setSelectionRange(0, node.value.length);
-           }).on('blur', function () {
-             setLabelForEntity();
-           }).call(combobox.fetcher(fetchWikidataItems));
-           combobox.on('accept', function (d) {
-             if (d) {
-               _qid = d.id;
-               change();
-             }
-           }).on('cancel', function () {
-             setLabelForEntity();
-           });
-           searchRowEnter.append('button').attr('class', 'form-field-button wiki-link').attr('title', _t('icons.view_on', {
-             domain: 'wikidata.org'
-           })).call(svgIcon('#iD-icon-out-link')).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             if (_wikiURL) window.open(_wikiURL, '_blank');
-           });
-           searchRow = searchRow.merge(searchRowEnter);
-           _searchInput = searchRow.select('input');
-           var wikidataProperties = ['description', 'identifier'];
-           var items = list.selectAll('li.labeled-input').data(wikidataProperties); // Enter
+           if (degStr === null) {
+             degStr = DEFAULTSQUARE.toString();
+           }

 
 

-           var enter = items.enter().append('li').attr('class', function (d) {
-             return 'labeled-input preset-wikidata-' + d;
-           });
-           enter.append('span').attr('class', 'label').html(function (d) {
-             return _t.html('wikidata.' + d);
-           });
-           enter.append('input').attr('type', 'text').call(utilNoAuto).classed('disabled', 'true').attr('readonly', 'true');
-           enter.append('button').attr('class', 'form-field-button').attr('title', _t('icons.copy')).call(svgIcon('#iD-operation-copy')).on('click', function (d3_event) {
+           var span = items.selectAll('.square-degrees');
+           var input = span.selectAll('.square-degrees-input').data([0]); // enter / update
+
+           input.enter().append('input').attr('type', 'number').attr('min', MINSQUARE.toString()).attr('max', MAXSQUARE.toString()).attr('step', '0.5').attr('class', 'square-degrees-input').call(utilNoAuto).on('click', function (d3_event) {

              d3_event.preventDefault();
              d3_event.preventDefault();

-             select(this.parentNode).select('input').node().select();
-             document.execCommand('copy');
-           });
+             d3_event.stopPropagation();
+             this.select();
+           }).on('keyup', function (d3_event) {
+             if (d3_event.keyCode === 13) {
+               // ↩ Return
+               this.blur();
+               this.select();
+             }
+           }).on('blur', changeSquare).merge(input).property('value', degStr);

          }
 
          }
 

-         function fetchWikidataItems(q, callback) {
-           if (!q && _hintKey) {
-             // other tags may be good search terms
-             for (var i in _entityIDs) {
-               var entity = context.hasEntity(_entityIDs[i]);
+         function changeSquare() {
+           var input = select(this);
+           var degStr = utilGetSetValue(input).trim();
+           var degNum = parseFloat(degStr, 10);

 
 

-               if (entity.tags[_hintKey]) {
-                 q = entity.tags[_hintKey];
-                 break;
-               }
-             }
+           if (!isFinite(degNum)) {
+             degNum = DEFAULTSQUARE;
+           } else if (degNum > MAXSQUARE) {
+             degNum = MAXSQUARE;
+           } else if (degNum < MINSQUARE) {
+             degNum = MINSQUARE;

            }
 
            }
 

-           wikidata.itemsForSearchQuery(q, function (err, data) {
-             if (err) return;
+           degNum = Math.round(degNum * 10) / 10; // round to 1 decimal

 
 

-             for (var i in data) {
-               data[i].value = data[i].label + ' (' + data[i].id + ')';
-               data[i].title = data[i].description;
-             }
+           degStr = degNum.toString();
+           input.property('value', degStr);
+           corePreferences('validate-square-degrees', degStr);
+           context.validator().revalidateUnsquare();
+         }

 
 

-             if (callback) callback(data);
-           });
+         function isRuleEnabled(d) {
+           return context.validator().isRuleEnabled(d);

          }
 
          }
 

-         function change() {
-           var syncTags = {};
-           syncTags[field.key] = _qid;
-           dispatch$1.call('change', this, syncTags); // attempt asynchronous update of wikidata tag..
+         function toggleRule(d3_event, d) {
+           context.validator().toggleRule(d);
+         }

 
 

-           var initGraph = context.graph();
-           var initEntityIDs = _entityIDs;
-           wikidata.entityByQID(_qid, function (err, entity) {
-             if (err) return; // If graph has changed, we can't apply this update.
+         context.validator().on('validated.uiSectionValidationRules', function () {
+           window.requestIdleCallback(section.reRender);
+         });
+         return section;
+       }

 
 

-             if (context.graph() !== initGraph) return;
-             if (!entity.sitelinks) return;
-             var langs = wikidata.languagesToQuery(); // use the label and description languages as fallbacks
+       function uiSectionValidationStatus(context) {
+         var section = uiSection('issues-status', context).content(renderContent).shouldDisplay(function () {
+           var issues = context.validator().getIssues(getOptions());
+           return issues.length === 0;
+         });

 
 

-             ['labels', 'descriptions'].forEach(function (key) {
-               if (!entity[key]) return;
-               var valueLangs = Object.keys(entity[key]);
-               if (valueLangs.length === 0) return;
-               var valueLang = valueLangs[0];
+         function getOptions() {
+           return {
+             what: corePreferences('validate-what') || 'edited',
+             where: corePreferences('validate-where') || 'all'
+           };
+         }

 
 

-               if (langs.indexOf(valueLang) === -1) {
-                 langs.push(valueLang);
-               }
-             });
-             var newWikipediaValue;
+         function renderContent(selection) {
+           var box = selection.selectAll('.box').data([0]);
+           var boxEnter = box.enter().append('div').attr('class', 'box');
+           boxEnter.append('div').call(svgIcon('#iD-icon-apply', 'pre-text'));
+           var noIssuesMessage = boxEnter.append('span');
+           noIssuesMessage.append('strong').attr('class', 'message');
+           noIssuesMessage.append('br');
+           noIssuesMessage.append('span').attr('class', 'details');
+           renderIgnoredIssuesReset(selection);
+           setNoIssuesText(selection);
+         }

 
 

-             if (_wikipediaKey) {
-               var foundPreferred;
+         function renderIgnoredIssuesReset(selection) {
+           var ignoredIssues = context.validator().getIssues({
+             what: 'all',
+             where: 'all',
+             includeDisabledRules: true,
+             includeIgnored: 'only'
+           });
+           var resetIgnored = selection.selectAll('.reset-ignored').data(ignoredIssues.length ? [0] : []); // exit

 
 

-               for (var i in langs) {
-                 var lang = langs[i];
-                 var siteID = lang.replace('-', '_') + 'wiki';
+           resetIgnored.exit().remove(); // enter

 
 

-                 if (entity.sitelinks[siteID]) {
-                   foundPreferred = true;
-                   newWikipediaValue = lang + ':' + entity.sitelinks[siteID].title; // use the first match
+           var resetIgnoredEnter = resetIgnored.enter().append('div').attr('class', 'reset-ignored section-footer');
+           resetIgnoredEnter.append('a').attr('href', '#'); // update

 
 

-                   break;
-                 }
-               }
+           resetIgnored = resetIgnored.merge(resetIgnoredEnter);
+           resetIgnored.select('a').html(_t('inspector.title_count', {
+             title: _t.html('issues.reset_ignored'),
+             count: ignoredIssues.length
+           }));
+           resetIgnored.on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.validator().resetIgnoredIssues();
+           });
+         }

 
 

-               if (!foundPreferred) {
-                 // No wikipedia sites available in the user's language or the fallback languages,
-                 // default to any wikipedia sitelink
-                 var wikiSiteKeys = Object.keys(entity.sitelinks).filter(function (site) {
-                   return site.endsWith('wiki');
-                 });
+         function setNoIssuesText(selection) {
+           var opts = getOptions();

 
 

-                 if (wikiSiteKeys.length === 0) {
-                   // if no wikipedia pages are linked to this wikidata entity, delete that tag
-                   newWikipediaValue = null;
-                 } else {
-                   var wikiLang = wikiSiteKeys[0].slice(0, -4).replace('_', '-');
-                   var wikiTitle = entity.sitelinks[wikiSiteKeys[0]].title;
-                   newWikipediaValue = wikiLang + ':' + wikiTitle;
-                 }
+           function checkForHiddenIssues(cases) {
+             for (var type in cases) {
+               var hiddenOpts = cases[type];
+               var hiddenIssues = context.validator().getIssues(hiddenOpts);
+
+               if (hiddenIssues.length) {
+                 selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.' + type, {
+                   count: hiddenIssues.length.toString()
+                 }));
+                 return;

                }
              }
 
                }
              }
 

-             if (newWikipediaValue) {
-               newWikipediaValue = context.cleanTagValue(newWikipediaValue);
-             }
+             selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.none'));
+           }

 
 

-             if (typeof newWikipediaValue === 'undefined') return;
-             var actions = initEntityIDs.map(function (entityID) {
-               var entity = context.hasEntity(entityID);
-               if (!entity) return null;
-               var currTags = Object.assign({}, entity.tags); // shallow copy
+           var messageType;

 
 

-               if (newWikipediaValue === null) {
-                 if (!currTags[_wikipediaKey]) return null;
-                 delete currTags[_wikipediaKey];
-               } else {
-                 currTags[_wikipediaKey] = newWikipediaValue;
+           if (opts.what === 'edited' && opts.where === 'visible') {
+             messageType = 'edits_in_view';
+             checkForHiddenIssues({
+               elsewhere: {
+                 what: 'edited',
+                 where: 'all'
+               },
+               everything_else: {
+                 what: 'all',
+                 where: 'visible'
+               },
+               disabled_rules: {
+                 what: 'edited',
+                 where: 'visible',
+                 includeDisabledRules: 'only'
+               },
+               everything_else_elsewhere: {
+                 what: 'all',
+                 where: 'all'
+               },
+               disabled_rules_elsewhere: {
+                 what: 'edited',
+                 where: 'all',
+                 includeDisabledRules: 'only'
+               },
+               ignored_issues: {
+                 what: 'edited',
+                 where: 'visible',
+                 includeIgnored: 'only'
+               },
+               ignored_issues_elsewhere: {
+                 what: 'edited',
+                 where: 'all',
+                 includeIgnored: 'only'
+               }
+             });
+           } else if (opts.what === 'edited' && opts.where === 'all') {
+             messageType = 'edits';
+             checkForHiddenIssues({
+               everything_else: {
+                 what: 'all',
+                 where: 'all'
+               },
+               disabled_rules: {
+                 what: 'edited',
+                 where: 'all',
+                 includeDisabledRules: 'only'
+               },
+               ignored_issues: {
+                 what: 'edited',
+                 where: 'all',
+                 includeIgnored: 'only'
+               }
+             });
+           } else if (opts.what === 'all' && opts.where === 'visible') {
+             messageType = 'everything_in_view';
+             checkForHiddenIssues({
+               elsewhere: {
+                 what: 'all',
+                 where: 'all'
+               },
+               disabled_rules: {
+                 what: 'all',
+                 where: 'visible',
+                 includeDisabledRules: 'only'
+               },
+               disabled_rules_elsewhere: {
+                 what: 'all',
+                 where: 'all',
+                 includeDisabledRules: 'only'
+               },
+               ignored_issues: {
+                 what: 'all',
+                 where: 'visible',
+                 includeIgnored: 'only'
+               },
+               ignored_issues_elsewhere: {
+                 what: 'all',
+                 where: 'all',
+                 includeIgnored: 'only'
+               }
+             });
+           } else if (opts.what === 'all' && opts.where === 'all') {
+             messageType = 'everything';
+             checkForHiddenIssues({
+               disabled_rules: {
+                 what: 'all',
+                 where: 'all',
+                 includeDisabledRules: 'only'
+               },
+               ignored_issues: {
+                 what: 'all',
+                 where: 'all',
+                 includeIgnored: 'only'

                }
                }

+             });
+           }

 
 

-               return actionChangeTags(entityID, currTags);
-             }).filter(Boolean);
-             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
+           if (opts.what === 'edited' && context.history().difference().summary().length === 0) {
+             messageType = 'no_edits';
+           }

 
 

-             context.overwrite(function actionUpdateWikipediaTags(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
-               });
-               return graph;
-             }, context.history().undoAnnotation()); // do not dispatch.call('change') here, because entity_editor
-             // changeTags() is not intended to be called asynchronously
-           });
+           selection.select('.box .message').html(_t.html('issues.no_issues.message.' + messageType));

          }
 
          }
 

-         function setLabelForEntity() {
-           var label = '';
+         context.validator().on('validated.uiSectionValidationStatus', function () {
+           window.requestIdleCallback(section.reRender);
+         });
+         context.map().on('move.uiSectionValidationStatus', debounce(function () {
+           window.requestIdleCallback(section.reRender);
+         }, 1000));
+         return section;
+       }

 
 

-           if (_wikidataEntity) {
-             label = entityPropertyForDisplay(_wikidataEntity, 'labels');
+       function uiPaneIssues(context) {
+         var issuesPane = uiPane('issues', context).key(_t('issues.key')).label(_t.html('issues.title')).description(_t.html('issues.title')).iconName('iD-icon-alert').sections([uiSectionValidationOptions(context), uiSectionValidationStatus(context), uiSectionValidationIssues('issues-errors', 'error', context), uiSectionValidationIssues('issues-warnings', 'warning', context), uiSectionValidationRules(context)]);
+         return issuesPane;
+       }

 
 

-             if (label.length === 0) {
-               label = _wikidataEntity.id.toString();
-             }
-           }
+       function uiSettingsCustomData(context) {
+         var dispatch = dispatch$8('change');

 
 

-           utilGetSetValue(_searchInput, label);
-         }
+         function render(selection) {
+           var dataLayer = context.layers().layer('data'); // keep separate copies of original and current settings

 
 

-         wiki.tags = function (tags) {
-           var isMixed = Array.isArray(tags[field.key]);
+           var _origSettings = {
+             fileList: dataLayer && dataLayer.fileList() || null,
+             url: corePreferences('settings-custom-data-url')
+           };
+           var _currSettings = {
+             fileList: dataLayer && dataLayer.fileList() || null,
+             url: corePreferences('settings-custom-data-url')
+           }; // var example = 'https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png';

 
 

-           _searchInput.attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : '').classed('mixed', isMixed);
+           var modal = uiConfirm(selection).okButton();
+           modal.classed('settings-modal settings-custom-data', true);
+           modal.select('.modal-section.header').append('h3').html(_t.html('settings.custom_data.header'));
+           var textSection = modal.select('.modal-section.message-text');
+           textSection.append('pre').attr('class', 'instructions-file').html(_t.html('settings.custom_data.file.instructions'));
+           textSection.append('input').attr('class', 'field-file').attr('type', 'file').property('files', _currSettings.fileList) // works for all except IE11
+           .on('change', function (d3_event) {
+             var files = d3_event.target.files;

 
 

-           _qid = typeof tags[field.key] === 'string' && tags[field.key] || '';
+             if (files && files.length) {
+               _currSettings.url = '';
+               textSection.select('.field-url').property('value', '');
+               _currSettings.fileList = files;
+             } else {
+               _currSettings.fileList = null;
+             }
+           });
+           textSection.append('h4').html(_t.html('settings.custom_data.or'));
+           textSection.append('pre').attr('class', 'instructions-url').html(_t.html('settings.custom_data.url.instructions'));
+           textSection.append('textarea').attr('class', 'field-url').attr('placeholder', _t('settings.custom_data.url.placeholder')).call(utilNoAuto).property('value', _currSettings.url); // insert a cancel button

 
 

-           if (!/^Q[0-9]*$/.test(_qid)) {
-             // not a proper QID
-             unrecognized();
-             return;
-           } // QID value in correct format
+           var buttonSection = modal.select('.modal-section.buttons');
+           buttonSection.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
+           buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
+           buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);
+
+           function isSaveDisabled() {
+             return null;
+           } // restore the original url

 
 
 
 

-           _wikiURL = 'https://wikidata.org/wiki/' + _qid;
-           wikidata.entityByQID(_qid, function (err, entity) {
-             if (err) {
-               unrecognized();
-               return;
-             }
+           function clickCancel() {
+             textSection.select('.field-url').property('value', _origSettings.url);
+             corePreferences('settings-custom-data-url', _origSettings.url);
+             this.blur();
+             modal.close();
+           } // accept the current url

 
 

-             _wikidataEntity = entity;
-             setLabelForEntity();
-             var description = entityPropertyForDisplay(entity, 'descriptions');

 
 

-             _selection.select('button.wiki-link').classed('disabled', false);
+           function clickSave() {
+             _currSettings.url = textSection.select('.field-url').property('value').trim(); // one or the other but not both

 
 

-             _selection.select('.preset-wikidata-description').style('display', function () {
-               return description.length > 0 ? 'flex' : 'none';
-             }).select('input').attr('value', description);
+             if (_currSettings.url) {
+               _currSettings.fileList = null;
+             }

 
 

-             _selection.select('.preset-wikidata-identifier').style('display', function () {
-               return entity.id ? 'flex' : 'none';
-             }).select('input').attr('value', entity.id);
-           }); // not a proper QID
+             if (_currSettings.fileList) {
+               _currSettings.url = '';
+             }

 
 

-           function unrecognized() {
-             _wikidataEntity = null;
-             setLabelForEntity();
+             corePreferences('settings-custom-data-url', _currSettings.url);
+             this.blur();
+             modal.close();
+             dispatch.call('change', this, _currSettings);
+           }
+         }

 
 

-             _selection.select('.preset-wikidata-description').style('display', 'none');
+         return utilRebind(render, dispatch, 'on');
+       }

 
 

-             _selection.select('.preset-wikidata-identifier').style('display', 'none');
+       function uiSectionDataLayers(context) {
+         var settingsCustomData = uiSettingsCustomData(context).on('change', customChanged);
+         var layers = context.layers();
+         var section = uiSection('data-layers', context).label(_t.html('map_data.data_layers')).disclosureContent(renderDisclosureContent);

 
 

-             _selection.select('button.wiki-link').classed('disabled', true);
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.data-layer-container').data([0]);
+           container.enter().append('div').attr('class', 'data-layer-container').merge(container).call(drawOsmItems).call(drawQAItems).call(drawCustomDataItems).call(drawVectorItems) // Beta - Detroit mapping challenge
+           .call(drawPanelItems);
+         }

 
 

-             if (_qid && _qid !== '') {
-               _wikiURL = 'https://wikidata.org/wiki/Special:Search?search=' + _qid;
-             } else {
-               _wikiURL = '';
-             }
-           }
-         };
+         function showsLayer(which) {
+           var layer = layers.layer(which);

 
 

-         function entityPropertyForDisplay(wikidataEntity, propKey) {
-           if (!wikidataEntity[propKey]) return '';
-           var propObj = wikidataEntity[propKey];
-           var langKeys = Object.keys(propObj);
-           if (langKeys.length === 0) return ''; // sorted by priority, since we want to show the user's language first if possible
+           if (layer) {
+             return layer.enabled();
+           }

 
 

-           var langs = wikidata.languagesToQuery();
+           return false;
+         }

 
 

-           for (var i in langs) {
-             var lang = langs[i];
-             var valueObj = propObj[lang];
-             if (valueObj && valueObj.value && valueObj.value.length > 0) return valueObj.value;
-           } // default to any available value
+         function setLayer(which, enabled) {
+           // Don't allow layer changes while drawing - #6584
+           var mode = context.mode();
+           if (mode && /^draw/.test(mode.id)) return;
+           var layer = layers.layer(which);

 
 

+           if (layer) {
+             layer.enabled(enabled);

 
 

-           return propObj[langKeys[0]].value;
+             if (!enabled && (which === 'osm' || which === 'notes')) {
+               context.enter(modeBrowse(context));
+             }
+           }

          }
 
          }
 

-         wiki.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return wiki;
-         };
+         function toggleLayer(which) {
+           setLayer(which, !showsLayer(which));
+         }

 
 

-         wiki.focus = function () {
-           _searchInput.node().focus();
-         };
+         function drawOsmItems(selection) {
+           var osmKeys = ['osm', 'notes'];
+           var osmLayers = layers.all().filter(function (obj) {
+             return osmKeys.indexOf(obj.id) !== -1;
+           });
+           var ul = selection.selectAll('.layer-list-osm').data([0]);
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-osm').merge(ul);
+           var li = ul.selectAll('.list-item').data(osmLayers);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', function (d) {
+             return 'list-item list-item-' + d.id;
+           });
+           var labelEnter = liEnter.append('label').each(function (d) {
+             if (d.id === 'osm') {
+               select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).keys([uiCmd('⌥' + _t('area_fill.wireframe.key'))]).placement('bottom'));
+             } else {
+               select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).placement('bottom'));
+             }
+           });
+           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
+             toggleLayer(d.id);
+           });
+           labelEnter.append('span').html(function (d) {
+             return _t.html('map_data.layers.' + d.id + '.title');
+           }); // Update

 
 

-         return utilRebind(wiki, dispatch$1, 'on');
-       }
+           li.merge(liEnter).classed('active', function (d) {
+             return d.layer.enabled();
+           }).selectAll('input').property('checked', function (d) {
+             return d.layer.enabled();
+           });
+         }

 
 

-       function uiFieldWikipedia(field, context) {
-         var _arguments = arguments;
-         var dispatch$1 = dispatch('change');
-         var wikipedia = services.wikipedia;
-         var wikidata = services.wikidata;
+         function drawQAItems(selection) {
+           var qaKeys = ['keepRight', 'improveOSM', 'osmose'];
+           var qaLayers = layers.all().filter(function (obj) {
+             return qaKeys.indexOf(obj.id) !== -1;
+           });
+           var ul = selection.selectAll('.layer-list-qa').data([0]);
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-qa').merge(ul);
+           var li = ul.selectAll('.list-item').data(qaLayers);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', function (d) {
+             return 'list-item list-item-' + d.id;
+           });
+           var labelEnter = liEnter.append('label').each(function (d) {
+             select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).placement('bottom'));
+           });
+           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
+             toggleLayer(d.id);
+           });
+           labelEnter.append('span').html(function (d) {
+             return _t.html('map_data.layers.' + d.id + '.title');
+           }); // Update

 
 

-         var _langInput = select(null);
+           li.merge(liEnter).classed('active', function (d) {
+             return d.layer.enabled();
+           }).selectAll('input').property('checked', function (d) {
+             return d.layer.enabled();
+           });
+         } // Beta feature - sample vector layers to support Detroit Mapping Challenge
+         // https://github.com/osmus/detroit-mapping-challenge

 
 

-         var _titleInput = select(null);

 
 

-         var _wikiURL = '';
+         function drawVectorItems(selection) {
+           var dataLayer = layers.layer('data');
+           var vtData = [{
+             name: 'Detroit Neighborhoods/Parks',
+             src: 'neighborhoods-parks',
+             tooltip: 'Neighborhood boundaries and parks as compiled by City of Detroit in concert with community groups.',
+             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmur6x34562qp9iv1u3ksf-54hev,jonahadkins.cjksmqxdx33jj2wp90xd9x2md-4e5y2/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
+           }, {
+             name: 'Detroit Composite POIs',
+             src: 'composite-poi',
+             tooltip: 'Fire Inspections, Business Licenses, and other public location data collated from the City of Detroit.',
+             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmm6a02sli31myxhsr7zf3-2sw8h/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
+           }, {
+             name: 'Detroit All-The-Places POIs',
+             src: 'alltheplaces-poi',
+             tooltip: 'Public domain business location data created by web scrapers.',
+             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmswgk340g2vo06p1w9w0j-8fjjc/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
+           }]; // Only show this if the map is around Detroit..

 
 

-         var _entityIDs;
+           var detroit = geoExtent([-83.5, 42.1], [-82.8, 42.5]);
+           var showVectorItems = context.map().zoom() > 9 && detroit.contains(context.map().center());
+           var container = selection.selectAll('.vectortile-container').data(showVectorItems ? [0] : []);
+           container.exit().remove();
+           var containerEnter = container.enter().append('div').attr('class', 'vectortile-container');
+           containerEnter.append('h4').attr('class', 'vectortile-header').html('Detroit Vector Tiles (Beta)');
+           containerEnter.append('ul').attr('class', 'layer-list layer-list-vectortile');
+           containerEnter.append('div').attr('class', 'vectortile-footer').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/osmus/detroit-mapping-challenge').append('span').html('About these layers');
+           container = container.merge(containerEnter);
+           var ul = container.selectAll('.layer-list-vectortile');
+           var li = ul.selectAll('.list-item').data(vtData);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', function (d) {
+             return 'list-item list-item-' + d.src;
+           });
+           var labelEnter = liEnter.append('label').each(function (d) {
+             select(this).call(uiTooltip().title(d.tooltip).placement('top'));
+           });
+           labelEnter.append('input').attr('type', 'radio').attr('name', 'vectortile').on('change', selectVTLayer);
+           labelEnter.append('span').html(function (d) {
+             return d.name;
+           }); // Update

 
 

-         var _tags;
+           li.merge(liEnter).classed('active', isVTLayerSelected).selectAll('input').property('checked', isVTLayerSelected);

 
 

-         var _dataWikipedia = [];
-         _mainFileFetcher.get('wmf_sitematrix').then(function (d) {
-           _dataWikipedia = d;
-           if (_tags) updateForTags(_tags);
-         })["catch"](function () {
-           /* ignore */
-         });
-         var langCombo = uiCombobox(context, 'wikipedia-lang').fetcher(function (value, callback) {
-           var v = value.toLowerCase();
-           callback(_dataWikipedia.filter(function (d) {
-             return d[0].toLowerCase().indexOf(v) >= 0 || d[1].toLowerCase().indexOf(v) >= 0 || d[2].toLowerCase().indexOf(v) >= 0;
-           }).map(function (d) {
-             return {
-               value: d[1]
-             };
-           }));
-         });
-         var titleCombo = uiCombobox(context, 'wikipedia-title').fetcher(function (value, callback) {
-           if (!value) {
-             value = '';
+           function isVTLayerSelected(d) {
+             return dataLayer && dataLayer.template() === d.template;
+           }

 
 

-             for (var i in _entityIDs) {
-               var entity = context.hasEntity(_entityIDs[i]);
+           function selectVTLayer(d3_event, d) {
+             corePreferences('settings-custom-data-url', d.template);

 
 

-               if (entity.tags.name) {
-                 value = entity.tags.name;
-                 break;
-               }
+             if (dataLayer) {
+               dataLayer.template(d.template, d.src);
+               dataLayer.enabled(true);

              }
            }
              }
            }

+         }

 
 

-           var searchfn = value.length > 7 ? wikipedia.search : wikipedia.suggestions;
-           searchfn(language()[2], value, function (query, data) {
-             callback(data.map(function (d) {
-               return {
-                 value: d
-               };
-             }));
+         function drawCustomDataItems(selection) {
+           var dataLayer = layers.layer('data');
+           var hasData = dataLayer && dataLayer.hasData();
+           var showsData = hasData && dataLayer.enabled();
+           var ul = selection.selectAll('.layer-list-data').data(dataLayer ? [0] : []); // Exit
+
+           ul.exit().remove(); // Enter
+
+           var ulEnter = ul.enter().append('ul').attr('class', 'layer-list layer-list-data');
+           var liEnter = ulEnter.append('li').attr('class', 'list-item-data');
+           var labelEnter = liEnter.append('label').call(uiTooltip().title(_t.html('map_data.layers.custom.tooltip')).placement('top'));
+           labelEnter.append('input').attr('type', 'checkbox').on('change', function () {
+             toggleLayer('data');

            });
            });

-         });
+           labelEnter.append('span').html(_t.html('map_data.layers.custom.title'));
+           liEnter.append('button').attr('class', 'open-data-options').call(uiTooltip().title(_t.html('settings.custom_data.tooltip')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             editCustom();
+           }).call(svgIcon('#iD-icon-more'));
+           liEnter.append('button').attr('class', 'zoom-to-data').call(uiTooltip().title(_t.html('map_data.layers.custom.zoom')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', function (d3_event) {
+             if (select(this).classed('disabled')) return;
+             d3_event.preventDefault();
+             d3_event.stopPropagation();
+             dataLayer.fitZoom();
+           }).call(svgIcon('#iD-icon-framed-dot', 'monochrome')); // Update

 
 

-         function wiki(selection) {
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]);
-           wrap = wrap.enter().append('div').attr('class', "form-field-input-wrap form-field-input-".concat(field.type)).merge(wrap);
-           var langContainer = wrap.selectAll('.wiki-lang-container').data([0]);
-           langContainer = langContainer.enter().append('div').attr('class', 'wiki-lang-container').merge(langContainer);
-           _langInput = langContainer.selectAll('input.wiki-lang').data([0]);
-           _langInput = _langInput.enter().append('input').attr('type', 'text').attr('class', 'wiki-lang').attr('placeholder', _t('translate.localized_translation_language')).call(utilNoAuto).call(langCombo).merge(_langInput);
+           ul = ul.merge(ulEnter);
+           ul.selectAll('.list-item-data').classed('active', showsData).selectAll('label').classed('deemphasize', !hasData).selectAll('input').property('disabled', !hasData).property('checked', showsData);
+           ul.selectAll('button.zoom-to-data').classed('disabled', !hasData);
+         }

 
 

-           _langInput.on('blur', changeLang).on('change', changeLang);
+         function editCustom() {
+           context.container().call(settingsCustomData);
+         }

 
 

-           var titleContainer = wrap.selectAll('.wiki-title-container').data([0]);
-           titleContainer = titleContainer.enter().append('div').attr('class', 'wiki-title-container').merge(titleContainer);
-           _titleInput = titleContainer.selectAll('input.wiki-title').data([0]);
-           _titleInput = _titleInput.enter().append('input').attr('type', 'text').attr('class', 'wiki-title').attr('id', field.domId).call(utilNoAuto).call(titleCombo).merge(_titleInput);
+         function customChanged(d) {
+           var dataLayer = layers.layer('data');

 
 

-           _titleInput.on('blur', blur).on('change', change);
+           if (d && d.url) {
+             dataLayer.url(d.url);
+           } else if (d && d.fileList) {
+             dataLayer.fileList(d.fileList);
+           }
+         }

 
 

-           var link = titleContainer.selectAll('.wiki-link').data([0]);
-           link = link.enter().append('button').attr('class', 'form-field-button wiki-link').attr('title', _t('icons.view_on', {
-             domain: 'wikipedia.org'
-           })).call(svgIcon('#iD-icon-out-link')).merge(link);
-           link.on('click', function (d3_event) {
+         function drawPanelItems(selection) {
+           var panelsListEnter = selection.selectAll('.md-extras-list').data([0]).enter().append('ul').attr('class', 'layer-list md-extras-list');
+           var historyPanelLabelEnter = panelsListEnter.append('li').attr('class', 'history-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('map_data.history_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.history.key'))]).placement('top'));
+           historyPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {

              d3_event.preventDefault();
              d3_event.preventDefault();

-             if (_wikiURL) window.open(_wikiURL, '_blank');
+             context.ui().info.toggle('history');

            });
            });

+           historyPanelLabelEnter.append('span').html(_t.html('map_data.history_panel.title'));
+           var measurementPanelLabelEnter = panelsListEnter.append('li').attr('class', 'measurement-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('map_data.measurement_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.measurement.key'))]).placement('top'));
+           measurementPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
+             d3_event.preventDefault();
+             context.ui().info.toggle('measurement');
+           });
+           measurementPanelLabelEnter.append('span').html(_t.html('map_data.measurement_panel.title'));

          }
 
          }
 

-         function defaultLanguageInfo(skipEnglishFallback) {
-           var langCode = _mainLocalizer.languageCode().toLowerCase();
+         context.layers().on('change.uiSectionDataLayers', section.reRender);
+         context.map().on('move.uiSectionDataLayers', debounce(function () {
+           // Detroit layers may have moved in or out of view
+           window.requestIdleCallback(section.reRender);
+         }, 1000));
+         return section;
+       }

 
 

-           for (var i in _dataWikipedia) {
-             var d = _dataWikipedia[i]; // default to the language of iD's current locale
+       function uiSectionMapFeatures(context) {
+         var _features = context.features().keys();

 
 

-             if (d[2] === langCode) return d;
-           } // fallback to English
+         var section = uiSection('map-features', context).label(_t.html('map_data.map_features')).disclosureContent(renderDisclosureContent).expandedByDefault(false);

 
 

+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.layer-feature-list-container').data([0]);
+           var containerEnter = container.enter().append('div').attr('class', 'layer-feature-list-container');
+           containerEnter.append('ul').attr('class', 'layer-list layer-feature-list');
+           var footer = containerEnter.append('div').attr('class', 'feature-list-links section-footer');
+           footer.append('a').attr('class', 'feature-list-link').attr('href', '#').html(_t.html('issues.disable_all')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.features().disableAll();
+           });
+           footer.append('a').attr('class', 'feature-list-link').attr('href', '#').html(_t.html('issues.enable_all')).on('click', function (d3_event) {
+             d3_event.preventDefault();
+             context.features().enableAll();
+           }); // Update

 
 

-           return skipEnglishFallback ? ['', '', ''] : ['English', 'English', 'en'];
+           container = container.merge(containerEnter);
+           container.selectAll('.layer-feature-list').call(drawListItems, _features, 'checkbox', 'feature', clickFeature, showsFeature);

          }
 
          }
 

-         function language(skipEnglishFallback) {
-           var value = utilGetSetValue(_langInput).toLowerCase();
+         function drawListItems(selection, data, type, name, change, active) {
+           var items = selection.selectAll('li').data(data); // Exit

 
 

-           for (var i in _dataWikipedia) {
-             var d = _dataWikipedia[i]; // return the language already set in the UI, if supported
+           items.exit().remove(); // Enter

 
 

-             if (d[0].toLowerCase() === value || d[1].toLowerCase() === value || d[2] === value) return d;
-           } // fallback to English
+           var enter = items.enter().append('li').call(uiTooltip().title(function (d) {
+             var tip = _t.html(name + '.' + d + '.tooltip');

 
 

+             if (autoHiddenFeature(d)) {
+               var msg = showsLayer('osm') ? _t.html('map_data.autohidden') : _t.html('map_data.osmhidden');
+               tip += '<div>' + msg + '</div>';
+             }

 
 

-           return defaultLanguageInfo(skipEnglishFallback);
-         }
+             return tip;
+           }).placement('top'));
+           var label = enter.append('label');
+           label.append('input').attr('type', type).attr('name', name).on('change', change);
+           label.append('span').html(function (d) {
+             return _t.html(name + '.' + d + '.description');
+           }); // Update

 
 

-         function changeLang() {
-           utilGetSetValue(_langInput, language()[1]);
-           change(true);
+           items = items.merge(enter);
+           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', autoHiddenFeature);

          }
 
          }
 

-         function blur() {
-           change(true);
+         function autoHiddenFeature(d) {
+           return context.features().autoHidden(d);

          }
 
          }
 

-         function change(skipWikidata) {
-           var value = utilGetSetValue(_titleInput);
-           var m = value.match(/https?:\/\/([-a-z]+)\.wikipedia\.org\/(?:wiki|\1-[-a-z]+)\/([^#]+)(?:#(.+))?/);
-
-           var langInfo = m && _dataWikipedia.find(function (d) {
-             return m[1] === d[2];
-           });
-
-           var syncTags = {};
+         function showsFeature(d) {
+           return context.features().enabled(d);
+         }

 
 

-           if (langInfo) {
-             var nativeLangName = langInfo[1]; // Normalize title http://www.mediawiki.org/wiki/API:Query#Title_normalization
+         function clickFeature(d3_event, d) {
+           context.features().toggle(d);
+         }

 
 

-             value = decodeURIComponent(m[2]).replace(/_/g, ' ');
+         function showsLayer(id) {
+           var layer = context.layers().layer(id);
+           return layer && layer.enabled();
+         } // add listeners

 
 

-             if (m[3]) {
-               var anchor; // try {
-               // leave this out for now - #6232
-               // Best-effort `anchordecode:` implementation
-               // anchor = decodeURIComponent(m[3].replace(/\.([0-9A-F]{2})/g, '%$1'));
-               // } catch (e) {

 
 

-               anchor = decodeURIComponent(m[3]); // }
+         context.features().on('change.map_features', section.reRender);
+         return section;
+       }

 
 

-               value += '#' + anchor.replace(/_/g, ' ');
-             }
+       function uiSectionMapStyleOptions(context) {
+         var section = uiSection('fill-area', context).label(_t.html('map_data.style_options')).disclosureContent(renderDisclosureContent).expandedByDefault(false);

 
 

-             value = value.slice(0, 1).toUpperCase() + value.slice(1);
-             utilGetSetValue(_langInput, nativeLangName);
-             utilGetSetValue(_titleInput, value);
-           }
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.layer-fill-list').data([0]);
+           container.enter().append('ul').attr('class', 'layer-list layer-fill-list').merge(container).call(drawListItems, context.map().areaFillOptions, 'radio', 'area_fill', setFill, isActiveFill);
+           var container2 = selection.selectAll('.layer-visual-diff-list').data([0]);
+           container2.enter().append('ul').attr('class', 'layer-list layer-visual-diff-list').merge(container2).call(drawListItems, ['highlight_edits'], 'checkbox', 'visual_diff', toggleHighlightEdited, function () {
+             return context.surface().classed('highlight-edited');
+           });
+         }

 
 

-           if (value) {
-             syncTags.wikipedia = context.cleanTagValue(language()[2] + ':' + value);
-           } else {
-             syncTags.wikipedia = undefined;
-           }
+         function drawListItems(selection, data, type, name, change, active) {
+           var items = selection.selectAll('li').data(data); // Exit

 
 

-           dispatch$1.call('change', this, syncTags);
-           if (skipWikidata || !value || !language()[2]) return; // attempt asynchronous update of wikidata tag..
+           items.exit().remove(); // Enter

 
 

-           var initGraph = context.graph();
-           var initEntityIDs = _entityIDs;
-           wikidata.itemsByTitle(language()[2], value, function (err, data) {
-             if (err || !data || !Object.keys(data).length) return; // If graph has changed, we can't apply this update.
+           var enter = items.enter().append('li').call(uiTooltip().title(function (d) {
+             return _t.html(name + '.' + d + '.tooltip');
+           }).keys(function (d) {
+             var key = d === 'wireframe' ? _t('area_fill.wireframe.key') : null;
+             if (d === 'highlight_edits') key = _t('map_data.highlight_edits.key');
+             return key ? [key] : null;
+           }).placement('top'));
+           var label = enter.append('label');
+           label.append('input').attr('type', type).attr('name', name).on('change', change);
+           label.append('span').html(function (d) {
+             return _t.html(name + '.' + d + '.description');
+           }); // Update

 
 

-             if (context.graph() !== initGraph) return;
-             var qids = Object.keys(data);
-             var value = qids && qids.find(function (id) {
-               return id.match(/^Q\d+$/);
-             });
-             var actions = initEntityIDs.map(function (entityID) {
-               var entity = context.entity(entityID).tags;
-               var currTags = Object.assign({}, entity); // shallow copy
+           items = items.merge(enter);
+           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', false);
+         }

 
 

-               if (currTags.wikidata !== value) {
-                 currTags.wikidata = value;
-                 return actionChangeTags(entityID, currTags);
-               }
+         function isActiveFill(d) {
+           return context.map().activeAreaFill() === d;
+         }

 
 

-               return null;
-             }).filter(Boolean);
-             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
+         function toggleHighlightEdited(d3_event) {
+           d3_event.preventDefault();
+           context.map().toggleHighlightEdited();
+         }

 
 

-             context.overwrite(function actionUpdateWikidataTags(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
-               });
-               return graph;
-             }, context.history().undoAnnotation()); // do not dispatch.call('change') here, because entity_editor
-             // changeTags() is not intended to be called asynchronously
-           });
+         function setFill(d3_event, d) {
+           context.map().activeAreaFill(d);

          }
 
          }
 

-         wiki.tags = function (tags) {
-           _tags = tags;
-           updateForTags(tags);
-         };
+         context.map().on('changeHighlighting.ui_style, changeAreaFill.ui_style', section.reRender);
+         return section;
+       }

 
 

-         function updateForTags(tags) {
-           var value = typeof tags[field.key] === 'string' ? tags[field.key] : ''; // Expect tag format of `tagLang:tagArticleTitle`, e.g. `fr:Paris`, with
-           // optional suffix of `#anchor`
+       function uiSectionPhotoOverlays(context) {
+         var layers = context.layers();
+         var section = uiSection('photo-overlays', context).label(_t.html('photo_overlays.title')).disclosureContent(renderDisclosureContent).expandedByDefault(false);

 
 

-           var m = value.match(/([^:]+):([^#]+)(?:#(.+))?/);
-           var tagLang = m && m[1];
-           var tagArticleTitle = m && m[2];
-           var anchor = m && m[3];
+         function renderDisclosureContent(selection) {
+           var container = selection.selectAll('.photo-overlay-container').data([0]);
+           container.enter().append('div').attr('class', 'photo-overlay-container').merge(container).call(drawPhotoItems).call(drawPhotoTypeItems).call(drawDateFilter).call(drawUsernameFilter);
+         }

 
 

-           var tagLangInfo = tagLang && _dataWikipedia.find(function (d) {
-             return tagLang === d[2];
-           }); // value in correct format
+         function drawPhotoItems(selection) {
+           var photoKeys = context.photos().overlayLayerIDs();
+           var photoLayers = layers.all().filter(function (obj) {
+             return photoKeys.indexOf(obj.id) !== -1;
+           });
+           var data = photoLayers.filter(function (obj) {
+             return obj.layer.supported();
+           });

 
 

+           function layerSupported(d) {
+             return d.layer && d.layer.supported();
+           }

 
 

-           if (tagLangInfo) {
-             var nativeLangName = tagLangInfo[1];
-             utilGetSetValue(_langInput, nativeLangName);
-             utilGetSetValue(_titleInput, tagArticleTitle + (anchor ? '#' + anchor : ''));
+           function layerEnabled(d) {
+             return layerSupported(d) && d.layer.enabled();
+           }

 
 

-             if (anchor) {
-               try {
-                 // Best-effort `anchorencode:` implementation
-                 anchor = encodeURIComponent(anchor.replace(/ /g, '_')).replace(/%/g, '.');
-               } catch (e) {
-                 anchor = anchor.replace(/ /g, '_');
-               }
+           var ul = selection.selectAll('.layer-list-photos').data([0]);
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-photos').merge(ul);
+           var li = ul.selectAll('.list-item-photos').data(data);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', function (d) {
+             var classes = 'list-item-photos list-item-' + d.id;
+
+             if (d.id === 'mapillary-signs' || d.id === 'mapillary-map-features') {
+               classes += ' indented';

              }
 
              }
 

-             _wikiURL = 'https://' + tagLang + '.wikipedia.org/wiki/' + tagArticleTitle.replace(/ /g, '_') + (anchor ? '#' + anchor : ''); // unrecognized value format
-           } else {
-             utilGetSetValue(_titleInput, value);
+             return classes;
+           });
+           var labelEnter = liEnter.append('label').each(function (d) {
+             var titleID;
+             if (d.id === 'mapillary-signs') titleID = 'mapillary.signs.tooltip';else if (d.id === 'mapillary') titleID = 'mapillary_images.tooltip';else if (d.id === 'openstreetcam') titleID = 'openstreetcam_images.tooltip';else titleID = d.id.replace(/-/g, '_') + '.tooltip';
+             select(this).call(uiTooltip().title(_t.html(titleID)).placement('top'));
+           });
+           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
+             toggleLayer(d.id);
+           });
+           labelEnter.append('span').html(function (d) {
+             var id = d.id;
+             if (id === 'mapillary-signs') id = 'photo_overlays.traffic_signs';
+             return _t.html(id.replace(/-/g, '_') + '.title');
+           }); // Update

 
 

-             if (value && value !== '') {
-               utilGetSetValue(_langInput, '');
-               var defaultLangInfo = defaultLanguageInfo();
-               _wikiURL = "https://".concat(defaultLangInfo[2], ".wikipedia.org/w/index.php?fulltext=1&search=").concat(value);
-             } else {
-               var shownOrDefaultLangInfo = language(true
-               /* skipEnglishFallback */
-               );
-               utilGetSetValue(_langInput, shownOrDefaultLangInfo[1]);
-               _wikiURL = '';
-             }
-           }
+           li.merge(liEnter).classed('active', layerEnabled).selectAll('input').property('checked', layerEnabled);

          }
 
          }
 

-         wiki.entityIDs = function (val) {
-           if (!_arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return wiki;
-         };
-
-         wiki.focus = function () {
-           _titleInput.node().focus();
-         };
+         function drawPhotoTypeItems(selection) {
+           var data = context.photos().allPhotoTypes();

 
 

-         return utilRebind(wiki, dispatch$1, 'on');
-       }
-       uiFieldWikipedia.supportsMultiselection = false;
+           function typeEnabled(d) {
+             return context.photos().showsPhotoType(d);
+           }

 
 

-       var uiFields = {
-         access: uiFieldAccess,
-         address: uiFieldAddress,
-         check: uiFieldCheck,
-         combo: uiFieldCombo,
-         cycleway: uiFieldCycleway,
-         defaultCheck: uiFieldCheck,
-         email: uiFieldText,
-         identifier: uiFieldText,
-         lanes: uiFieldLanes,
-         localized: uiFieldLocalized,
-         maxspeed: uiFieldMaxspeed,
-         manyCombo: uiFieldCombo,
-         multiCombo: uiFieldCombo,
-         networkCombo: uiFieldCombo,
-         number: uiFieldText,
-         onewayCheck: uiFieldCheck,
-         radio: uiFieldRadio,
-         restrictions: uiFieldRestrictions,
-         semiCombo: uiFieldCombo,
-         structureRadio: uiFieldRadio,
-         tel: uiFieldText,
-         text: uiFieldText,
-         textarea: uiFieldTextarea,
-         typeCombo: uiFieldCombo,
-         url: uiFieldText,
-         wikidata: uiFieldWikidata,
-         wikipedia: uiFieldWikipedia
-       };
+           var ul = selection.selectAll('.layer-list-photo-types').data([0]);
+           ul.exit().remove();
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-photo-types').merge(ul);
+           var li = ul.selectAll('.list-item-photo-types').data(context.photos().shouldFilterByPhotoType() ? data : []);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', function (d) {
+             return 'list-item-photo-types list-item-' + d;
+           });
+           var labelEnter = liEnter.append('label').each(function (d) {
+             select(this).call(uiTooltip().title(_t.html('photo_overlays.photo_type.' + d + '.tooltip')).placement('top'));
+           });
+           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
+             context.photos().togglePhotoType(d);
+           });
+           labelEnter.append('span').html(function (d) {
+             return _t.html('photo_overlays.photo_type.' + d + '.title');
+           }); // Update

 
 

-       function uiField(context, presetField, entityIDs, options) {
-         options = Object.assign({
-           show: true,
-           wrap: true,
-           remove: true,
-           revert: true,
-           info: true
-         }, options);
-         var dispatch$1 = dispatch('change', 'revert');
-         var field = Object.assign({}, presetField); // shallow copy
+           li.merge(liEnter).classed('active', typeEnabled).selectAll('input').property('checked', typeEnabled);
+         }

 
 

-         field.domId = utilUniqueDomId('form-field-' + field.safeid);
-         var _show = options.show;
-         var _state = '';
-         var _tags = {};
-         var _locked = false;
+         function drawDateFilter(selection) {
+           var data = context.photos().dateFilters();

 
 

-         var _lockedTip = uiTooltip().title(_t.html('inspector.lock.suggestion', {
-           label: field.label
-         })).placement('bottom');
+           function filterEnabled(d) {
+             return context.photos().dateFilterValue(d);
+           }

 
 

-         field.keys = field.keys || [field.key]; // only create the fields that are actually being shown
+           var ul = selection.selectAll('.layer-list-date-filter').data([0]);
+           ul.exit().remove();
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-date-filter').merge(ul);
+           var li = ul.selectAll('.list-item-date-filter').data(context.photos().shouldFilterByDate() ? data : []);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', 'list-item-date-filter');
+           var labelEnter = liEnter.append('label').each(function (d) {
+             select(this).call(uiTooltip().title(_t.html('photo_overlays.date_filter.' + d + '.tooltip')).placement('top'));
+           });
+           labelEnter.append('span').html(function (d) {
+             return _t.html('photo_overlays.date_filter.' + d + '.title');
+           });
+           labelEnter.append('input').attr('type', 'date').attr('class', 'list-item-input').attr('placeholder', _t('units.year_month_day')).call(utilNoAuto).each(function (d) {
+             utilGetSetValue(select(this), context.photos().dateFilterValue(d) || '');
+           }).on('change', function (d3_event, d) {
+             var value = utilGetSetValue(select(this)).trim();
+             context.photos().setDateFilter(d, value, true); // reload the displayed dates

 
 

-         if (_show && !field.impl) {
-           createField();
-         } // Creates the field.. This is done lazily,
-         // once we know that the field will be shown.
+             li.selectAll('input').each(function (d) {
+               utilGetSetValue(select(this), context.photos().dateFilterValue(d) || '');
+             });
+           });
+           li = li.merge(liEnter).classed('active', filterEnabled);
+         }

 
 

+         function drawUsernameFilter(selection) {
+           function filterEnabled() {
+             return context.photos().usernames();
+           }

 
 

-         function createField() {
-           field.impl = uiFields[field.type](field, context).on('change', function (t, onInput) {
-             dispatch$1.call('change', field, t, onInput);
+           var ul = selection.selectAll('.layer-list-username-filter').data([0]);
+           ul.exit().remove();
+           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-username-filter').merge(ul);
+           var li = ul.selectAll('.list-item-username-filter').data(context.photos().shouldFilterByUsername() ? ['username-filter'] : []);
+           li.exit().remove();
+           var liEnter = li.enter().append('li').attr('class', 'list-item-username-filter');
+           var labelEnter = liEnter.append('label').each(function () {
+             select(this).call(uiTooltip().title(_t.html('photo_overlays.username_filter.tooltip')).placement('top'));

            });
            });

+           labelEnter.append('span').html(_t.html('photo_overlays.username_filter.title'));
+           labelEnter.append('input').attr('type', 'text').attr('class', 'list-item-input').call(utilNoAuto).property('value', usernameValue).on('change', function () {
+             var value = select(this).property('value');
+             context.photos().setUsernameFilter(value, true);
+             select(this).property('value', usernameValue);
+           });
+           li.merge(liEnter).classed('active', filterEnabled);

 
 

-           if (entityIDs) {
-             field.entityIDs = entityIDs; // if this field cares about the entities, pass them along
-
-             if (field.impl.entityIDs) {
-               field.impl.entityIDs(entityIDs);
-             }
+           function usernameValue() {
+             var usernames = context.photos().usernames();
+             if (usernames) return usernames.join('; ');
+             return usernames;

            }
          }
 
            }
          }
 

-         function isModified() {
-           if (!entityIDs || !entityIDs.length) return false;
-           return entityIDs.some(function (entityID) {
-             var original = context.graph().base().entities[entityID];
-             var latest = context.graph().entity(entityID);
-             return field.keys.some(function (key) {
-               return original ? latest.tags[key] !== original.tags[key] : latest.tags[key];
-             });
-           });
+         function toggleLayer(which) {
+           setLayer(which, !showsLayer(which));

          }
 
          }
 

-         function tagsContainFieldKey() {
-           return field.keys.some(function (key) {
-             if (field.type === 'multiCombo') {
-               for (var tagKey in _tags) {
-                 if (tagKey.indexOf(key) === 0) {
-                   return true;
-                 }
-               }
+         function showsLayer(which) {
+           var layer = layers.layer(which);

 
 

-               return false;
-             }
+           if (layer) {
+             return layer.enabled();
+           }

 
 

-             return _tags[key] !== undefined;
-           });
+           return false;

          }
 
          }
 

-         function revert(d3_event, d) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-           if (!entityIDs || _locked) return;
-           dispatch$1.call('revert', d, d.keys);
-         }
+         function setLayer(which, enabled) {
+           var layer = layers.layer(which);

 
 

-         function remove(d3_event, d) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-           if (_locked) return;
-           var t = {};
-           d.keys.forEach(function (key) {
-             t[key] = undefined;
-           });
-           dispatch$1.call('change', d, t);
+           if (layer) {
+             layer.enabled(enabled);
+           }

          }
 
          }
 

-         field.render = function (selection) {
-           var container = selection.selectAll('.form-field').data([field]); // Enter
+         context.layers().on('change.uiSectionPhotoOverlays', section.reRender);
+         context.photos().on('change.uiSectionPhotoOverlays', section.reRender);
+         return section;
+       }

 
 

-           var enter = container.enter().append('div').attr('class', function (d) {
-             return 'form-field form-field-' + d.safeid;
-           }).classed('nowrap', !options.wrap);
+       function uiPaneMapData(context) {
+         var mapDataPane = uiPane('map-data', context).key(_t('map_data.key')).label(_t.html('map_data.title')).description(_t.html('map_data.description')).iconName('iD-icon-data').sections([uiSectionDataLayers(context), uiSectionPhotoOverlays(context), uiSectionMapStyleOptions(context), uiSectionMapFeatures(context)]);
+         return mapDataPane;
+       }

 
 

-           if (options.wrap) {
-             var labelEnter = enter.append('label').attr('class', 'field-label').attr('for', function (d) {
-               return d.domId;
-             });
-             var textEnter = labelEnter.append('span').attr('class', 'label-text');
-             textEnter.append('span').attr('class', 'label-textvalue').html(function (d) {
-               return d.label();
-             });
-             textEnter.append('span').attr('class', 'label-textannotation');
+       function uiSectionPrivacy(context) {
+         var section = uiSection('preferences-third-party', context).label(_t.html('preferences.privacy.title')).disclosureContent(renderDisclosureContent);

 
 

-             if (options.remove) {
-               labelEnter.append('button').attr('class', 'remove-icon').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete'));
-             }
+         var _showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';

 
 

-             if (options.revert) {
-               labelEnter.append('button').attr('class', 'modified-icon').attr('title', _t('icons.undo')).call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-redo' : '#iD-icon-undo'));
-             }
-           } // Update
+         function renderDisclosureContent(selection) {
+           // enter
+           var privacyOptionsListEnter = selection.selectAll('.privacy-options-list').data([0]).enter().append('ul').attr('class', 'layer-list privacy-options-list');
+           var thirdPartyIconsEnter = privacyOptionsListEnter.append('li').attr('class', 'privacy-third-party-icons-item').append('label').call(uiTooltip().title(_t.html('preferences.privacy.third_party_icons.tooltip')).placement('bottom'));
+           thirdPartyIconsEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
+             d3_event.preventDefault();
+             _showThirdPartyIcons = _showThirdPartyIcons === 'true' ? 'false' : 'true';
+             corePreferences('preferences.privacy.thirdpartyicons', _showThirdPartyIcons);
+             update();
+           });
+           thirdPartyIconsEnter.append('span').html(_t.html('preferences.privacy.third_party_icons.description')); // Privacy Policy link

 
 

+           selection.selectAll('.privacy-link').data([0]).enter().append('div').attr('class', 'privacy-link').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/openstreetmap/iD/blob/release/PRIVACY.md').append('span').html(_t.html('preferences.privacy.privacy_link'));
+           update();

 
 

-           container = container.merge(enter);
-           container.select('.field-label > .remove-icon') // propagate bound data
-           .on('click', remove);
-           container.select('.field-label > .modified-icon') // propagate bound data
-           .on('click', revert);
-           container.each(function (d) {
-             var selection = select(this);
+           function update() {
+             selection.selectAll('.privacy-third-party-icons-item').classed('active', _showThirdPartyIcons === 'true').select('input').property('checked', _showThirdPartyIcons === 'true');
+           }
+         }

 
 

-             if (!d.impl) {
-               createField();
-             }
+         return section;
+       }

 
 

-             var reference, help; // instantiate field help
+       function uiPanePreferences(context) {
+         var preferencesPane = uiPane('preferences', context).key(_t('preferences.key')).label(_t.html('preferences.title')).description(_t.html('preferences.description')).iconName('fas-user-cog').sections([uiSectionPrivacy(context)]);
+         return preferencesPane;
+       }

 
 

-             if (options.wrap && field.type === 'restrictions') {
-               help = uiFieldHelp(context, 'restrictions');
-             } // instantiate tag reference
+       function uiInit(context) {
+         var _initCounter = 0;
+         var _needWidth = {};

 
 

+         var _lastPointerType;

 
 

-             if (options.wrap && options.info) {
-               var referenceKey = d.key || '';
+         function render(container) {
+           container.on('click.ui', function (d3_event) {
+             // we're only concerned with the primary mouse button
+             if (d3_event.button !== 0) return;
+             if (!d3_event.composedPath) return; // some targets have default click events we don't want to override

 
 

-               if (d.type === 'multiCombo') {
-                 // lookup key without the trailing ':'
-                 referenceKey = referenceKey.replace(/:$/, '');
-               }
+             var isOkayTarget = d3_event.composedPath().some(function (node) {
+               // we only care about element nodes
+               return node.nodeType === 1 && ( // clicking <input> focuses it and/or changes a value
+               node.nodeName === 'INPUT' || // clicking <label> affects its <input> by default
+               node.nodeName === 'LABEL' || // clicking <a> opens a hyperlink by default
+               node.nodeName === 'A');
+             });
+             if (isOkayTarget) return; // disable double-tap-to-zoom on touchscreens

 
 

-               reference = uiTagReference(d.reference || {
-                 key: referenceKey
-               });
+             d3_event.preventDefault();
+           });
+           var detected = utilDetect(); // only WebKit supports gesture events

 
 

-               if (_state === 'hover') {
-                 reference.showing(false);
+           if ('GestureEvent' in window && // Listening for gesture events on iOS 13.4+ breaks double-tapping,
+           // but we only need to do this on desktop Safari anyway. – #7694
+           !detected.isMobileWebKit) {
+             // On iOS we disable pinch-to-zoom of the UI via the `touch-action`
+             // CSS property, but on desktop Safari we need to manually cancel the
+             // default gesture events.
+             container.on('gesturestart.ui gesturechange.ui gestureend.ui', function (d3_event) {
+               // disable pinch-to-zoom of the UI via multitouch trackpads on macOS Safari
+               d3_event.preventDefault();
+             });
+           }
+
+           if ('PointerEvent' in window) {
+             select(window).on('pointerdown.ui pointerup.ui', function (d3_event) {
+               var pointerType = d3_event.pointerType || 'mouse';
+
+               if (_lastPointerType !== pointerType) {
+                 _lastPointerType = pointerType;
+                 container.attr('pointer', pointerType);

                }
                }

-             }
+             }, true);
+           } else {
+             _lastPointerType = 'mouse';
+             container.attr('pointer', 'mouse');
+           }

 
 

-             selection.call(d.impl); // add field help components
+           container.attr('lang', _mainLocalizer.localeCode()).attr('dir', _mainLocalizer.textDirection()); // setup fullscreen keybindings (no button shown at this time)

 
 

-             if (help) {
-               selection.call(help.body).select('.field-label').call(help.button);
-             } // add tag reference components
+           container.call(uiFullScreen(context));
+           var map = context.map();
+           map.redrawEnable(false); // don't draw until we've set zoom/lat/long

 
 

+           map.on('hitMinZoom.ui', function () {
+             ui.flash.iconName('#iD-icon-no').label(_t.html('cannot_zoom'))();
+           });
+           container.append('svg').attr('id', 'ideditor-defs').call(ui.svgDefs);
+           container.append('div').attr('class', 'sidebar').call(ui.sidebar);
+           var content = container.append('div').attr('class', 'main-content active'); // Top toolbar

 
 

-             if (reference) {
-               selection.call(reference.body).select('.field-label').call(reference.button);
+           content.append('div').attr('class', 'top-toolbar-wrap').append('div').attr('class', 'top-toolbar fillD').call(uiTopToolbar(context));
+           content.append('div').attr('class', 'main-map').attr('dir', 'ltr').call(map);
+           var overMap = content.append('div').attr('class', 'over-map'); // HACK: Mobile Safari 14 likes to select anything selectable when long-
+           // pressing, even if it's not targeted. This conflicts with long-pressing
+           // to show the edit menu. We add a selectable offscreen element as the first
+           // child to trick Safari into not showing the selection UI.
+
+           overMap.append('div').attr('class', 'select-trap').text('t');
+           overMap.call(uiMapInMap(context)).call(uiNotice(context));
+           overMap.append('div').attr('class', 'spinner').call(uiSpinner(context)); // Map controls
+
+           var controls = overMap.append('div').attr('class', 'map-controls');
+           controls.append('div').attr('class', 'map-control zoombuttons').call(uiZoom(context));
+           controls.append('div').attr('class', 'map-control zoom-to-selection-control').call(uiZoomToSelection(context));
+           controls.append('div').attr('class', 'map-control geolocate-control').call(uiGeolocate(context));
+           controls.on('wheel.mapControls', function (d3_event) {
+             if (!d3_event.deltaX) {
+               controls.node().scrollTop += d3_event.deltaY;

              }
              }

+           }); // Add panes
+           // This should happen after map is initialized, as some require surface()

 
 

-             d.impl.tags(_tags);
+           var panes = overMap.append('div').attr('class', 'map-panes');
+           var uiPanes = [uiPaneBackground(context), uiPaneMapData(context), uiPaneIssues(context), uiPanePreferences(context), uiPaneHelp(context)];
+           uiPanes.forEach(function (pane) {
+             controls.append('div').attr('class', 'map-control map-pane-control ' + pane.id + '-control').call(pane.renderToggleButton);
+             panes.call(pane.renderPane);

            });
            });

-           container.classed('locked', _locked).classed('modified', isModified()).classed('present', tagsContainFieldKey()); // show a tip and lock icon if the field is locked
+           ui.info = uiInfo(context);
+           overMap.call(ui.info);
+           overMap.append('div').attr('class', 'photoviewer').classed('al', true) // 'al'=left,  'ar'=right
+           .classed('hide', true).call(ui.photoviewer);
+           overMap.append('div').attr('class', 'attribution-wrap').attr('dir', 'ltr').call(uiAttribution(context)); // Add footer

 
 

-           var annotation = container.selectAll('.field-label .label-textannotation');
-           var icon = annotation.selectAll('.icon').data(_locked ? [0] : []);
-           icon.exit().remove();
-           icon.enter().append('svg').attr('class', 'icon').append('use').attr('xlink:href', '#fas-lock');
-           container.call(_locked ? _lockedTip : _lockedTip.destroy);
-         };
+           var about = content.append('div').attr('class', 'map-footer');
+           about.append('div').attr('class', 'api-status').call(uiStatus(context));
+           var footer = about.append('div').attr('class', 'map-footer-bar fillD');
+           footer.append('div').attr('class', 'flash-wrap footer-hide');
+           var footerWrap = footer.append('div').attr('class', 'main-footer-wrap footer-show');
+           footerWrap.append('div').attr('class', 'scale-block').call(uiScale(context));
+           var aboutList = footerWrap.append('div').attr('class', 'info-block').append('ul').attr('class', 'map-footer-list');
+           aboutList.append('li').attr('class', 'user-list').call(uiContributors(context));
+           var apiConnections = context.apiConnections();

 
 

-         field.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return field;
-         };
+           if (apiConnections && apiConnections.length > 1) {
+             aboutList.append('li').attr('class', 'source-switch').call(uiSourceSwitch(context).keys(apiConnections));
+           }

 
 

-         field.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val;
+           aboutList.append('li').attr('class', 'issues-info').call(uiIssuesInfo(context));
+           aboutList.append('li').attr('class', 'feature-warning').call(uiFeatureInfo(context));
+           var issueLinks = aboutList.append('li');
+           issueLinks.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/issues').call(svgIcon('#iD-icon-bug', 'light')).call(uiTooltip().title(_t.html('report_a_bug')).placement('top'));
+           issueLinks.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/blob/develop/CONTRIBUTING.md#translating').call(svgIcon('#iD-icon-translate', 'light')).call(uiTooltip().title(_t.html('help_translate')).placement('top'));
+           aboutList.append('li').attr('class', 'version').call(uiVersion(context));

 
 

-           if (tagsContainFieldKey() && !_show) {
-             // always show a field if it has a value to display
-             _show = true;
+           if (!context.embed()) {
+             aboutList.call(uiAccount(context));
+           } // Setup map dimensions and move map to initial center/zoom.
+           // This should happen after .main-content and toolbars exist.

 
 

-             if (!field.impl) {
-               createField();
-             }
-           }

 
 

-           return field;
-         };
+           ui.onResize();
+           map.redrawEnable(true);
+           ui.hash = behaviorHash(context);
+           ui.hash();

 
 

-         field.locked = function (val) {
-           if (!arguments.length) return _locked;
-           _locked = val;
-           return field;
-         };
+           if (!ui.hash.hadHash) {
+             map.centerZoom([0, 0], 2);
+           } // Bind events

 
 

-         field.show = function () {
-           _show = true;

 
 

-           if (!field.impl) {
-             createField();
-           }
+           window.onbeforeunload = function () {
+             return context.save();
+           };

 
 

-           if (field["default"] && field.key && _tags[field.key] !== field["default"]) {
-             var t = {};
-             t[field.key] = field["default"];
-             dispatch$1.call('change', this, t);
-           }
-         }; // A shown field has a visible UI, a non-shown field is in the 'Add field' dropdown
+           window.onunload = function () {
+             context.history().unlock();
+           };

 
 

+           select(window).on('resize.editor', function () {
+             ui.onResize();
+           });
+           var panPixels = 80;
+           context.keybinding().on('⌫', function (d3_event) {
+             d3_event.preventDefault();
+           }).on([_t('sidebar.key'), '`', '²', '@'], ui.sidebar.toggle) // #5663, #6864 - common QWERTY, AZERTY
+           .on('←', pan([panPixels, 0])).on('↑', pan([0, panPixels])).on('→', pan([-panPixels, 0])).on('↓', pan([0, -panPixels])).on(uiCmd('⌥←'), pan([map.dimensions()[0], 0])).on(uiCmd('⌥↑'), pan([0, map.dimensions()[1]])).on(uiCmd('⌥→'), pan([-map.dimensions()[0], 0])).on(uiCmd('⌥↓'), pan([0, -map.dimensions()[1]])).on(uiCmd('⌘' + _t('background.key')), function quickSwitch(d3_event) {
+             if (d3_event) {
+               d3_event.stopImmediatePropagation();
+               d3_event.preventDefault();
+             }

 
 

-         field.isShown = function () {
-           return _show;
-         }; // An allowed field can appear in the UI or in the 'Add field' dropdown.
-         // A non-allowed field is hidden from the user altogether
+             var previousBackground = context.background().findSource(corePreferences('background-last-used-toggle'));

 
 

+             if (previousBackground) {
+               var currentBackground = context.background().baseLayerSource();
+               corePreferences('background-last-used-toggle', currentBackground.id);
+               corePreferences('background-last-used', previousBackground.id);
+               context.background().baseLayerSource(previousBackground);
+             }
+           }).on(_t('area_fill.wireframe.key'), function toggleWireframe(d3_event) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation();
+             context.map().toggleWireframe();
+           }).on(uiCmd('⌥' + _t('area_fill.wireframe.key')), function toggleOsmData(d3_event) {
+             d3_event.preventDefault();
+             d3_event.stopPropagation(); // Don't allow layer changes while drawing - #6584

 
 

-         field.isAllowed = function () {
-           if (entityIDs && entityIDs.length > 1 && uiFields[field.type].supportsMultiselection === false) return false;
-           if (field.geometry && !entityIDs.every(function (entityID) {
-             return field.matchGeometry(context.graph().geometry(entityID));
-           })) return false;
+             var mode = context.mode();
+             if (mode && /^draw/.test(mode.id)) return;
+             var layer = context.layers().layer('osm');

 
 

-           if (field.countryCodes || field.notCountryCodes) {
-             var extent = combinedEntityExtent();
-             if (!extent) return true;
-             var center = extent.center();
-             var countryCode = iso1A2Code(center);
-             if (!countryCode) return false;
-             countryCode = countryCode.toLowerCase();
+             if (layer) {
+               layer.enabled(!layer.enabled());
+
+               if (!layer.enabled()) {
+                 context.enter(modeBrowse(context));
+               }
+             }
+           }).on(_t('map_data.highlight_edits.key'), function toggleHighlightEdited(d3_event) {
+             d3_event.preventDefault();
+             context.map().toggleHighlightEdited();
+           });
+           context.on('enter.editor', function (entered) {
+             container.classed('mode-' + entered.id, true);
+           }).on('exit.editor', function (exited) {
+             container.classed('mode-' + exited.id, false);
+           });
+           context.enter(modeBrowse(context));

 
 

-             if (field.countryCodes && field.countryCodes.indexOf(countryCode) === -1) {
-               return false;
+           if (!_initCounter++) {
+             if (!ui.hash.startWalkthrough) {
+               context.container().call(uiSplash(context)).call(uiRestore(context));

              }
 
              }
 

-             if (field.notCountryCodes && field.notCountryCodes.indexOf(countryCode) !== -1) {
-               return false;
-             }
+             context.container().call(ui.shortcuts);

            }
 
            }
 

-           var prerequisiteTag = field.prerequisiteTag;
-
-           if (entityIDs && !tagsContainFieldKey() && // ignore tagging prerequisites if a value is already present
-           prerequisiteTag) {
-             if (!entityIDs.every(function (entityID) {
-               var entity = context.graph().entity(entityID);
-
-               if (prerequisiteTag.key) {
-                 var value = entity.tags[prerequisiteTag.key];
-                 if (!value) return false;
-
-                 if (prerequisiteTag.valueNot) {
-                   return prerequisiteTag.valueNot !== value;
-                 }
-
-                 if (prerequisiteTag.value) {
-                   return prerequisiteTag.value === value;
-                 }
-               } else if (prerequisiteTag.keyNot) {
-                 if (entity.tags[prerequisiteTag.keyNot]) return false;
-               }
+           var osm = context.connection();
+           var auth = uiLoading(context).message(_t.html('loading_auth')).blocking(true);

 
 

-               return true;
-             })) return false;
+           if (osm && auth) {
+             osm.on('authLoading.ui', function () {
+               context.container().call(auth);
+             }).on('authDone.ui', function () {
+               auth.close();
+             });

            }
 
            }
 

-           return true;
-         };
+           _initCounter++;

 
 

-         field.focus = function () {
-           if (field.impl) {
-             field.impl.focus();
+           if (ui.hash.startWalkthrough) {
+             ui.hash.startWalkthrough = false;
+             context.container().call(uiIntro(context));

            }
            }

-         };

 
 

-         function combinedEntityExtent() {
-           return entityIDs && entityIDs.length && entityIDs.reduce(function (extent, entityID) {
-             var entity = context.graph().entity(entityID);
-             return extent.extend(entity.extent(context.graph()));
-           }, geoExtent());
+           function pan(d) {
+             return function (d3_event) {
+               if (d3_event.shiftKey) return;
+               if (context.container().select('.combobox').size()) return;
+               d3_event.preventDefault();
+               context.map().pan(d, 100);
+             };
+           }

          }
 
          }
 

-         return utilRebind(field, dispatch$1, 'on');
-       }
-
-       function uiFormFields(context) {
-         var moreCombo = uiCombobox(context, 'more-fields').minItems(1);
-         var _fieldsArr = [];
-         var _lastPlaceholder = '';
-         var _state = '';
-         var _klass = '';
-
-         function formFields(selection) {
-           var allowedFields = _fieldsArr.filter(function (field) {
-             return field.isAllowed();
-           });
-
-           var shown = allowedFields.filter(function (field) {
-             return field.isShown();
-           });
-           var notShown = allowedFields.filter(function (field) {
-             return !field.isShown();
-           });
-           var container = selection.selectAll('.form-fields-container').data([0]);
-           container = container.enter().append('div').attr('class', 'form-fields-container ' + (_klass || '')).merge(container);
-           var fields = container.selectAll('.wrap-form-field').data(shown, function (d) {
-             return d.id + (d.entityIDs ? d.entityIDs.join() : '');
-           });
-           fields.exit().remove(); // Enter
-
-           var enter = fields.enter().append('div').attr('class', function (d) {
-             return 'wrap-form-field wrap-form-field-' + d.safeid;
-           }); // Update
-
-           fields = fields.merge(enter);
-           fields.order().each(function (d) {
-             select(this).call(d.render);
-           });
-           var titles = [];
-           var moreFields = notShown.map(function (field) {
-             var title = field.title();
-             titles.push(title);
-             var terms = field.terms();
-             if (field.key) terms.push(field.key);
-             if (field.keys) terms = terms.concat(field.keys);
-             return {
-               display: field.label(),
-               value: title,
-               title: title,
-               field: field,
-               terms: terms
-             };
-           });
-           var placeholder = titles.slice(0, 3).join(', ') + (titles.length > 3 ? '…' : '');
-           var more = selection.selectAll('.more-fields').data(_state === 'hover' || moreFields.length === 0 ? [] : [0]);
-           more.exit().remove();
-           var moreEnter = more.enter().append('div').attr('class', 'more-fields').append('label');
-           moreEnter.append('span').html(_t.html('inspector.add_fields'));
-           more = moreEnter.merge(more);
-           var input = more.selectAll('.value').data([0]);
-           input.exit().remove();
-           input = input.enter().append('input').attr('class', 'value').attr('type', 'text').attr('placeholder', placeholder).call(utilNoAuto).merge(input);
-           input.call(utilGetSetValue, '').call(moreCombo.data(moreFields).on('accept', function (d) {
-             if (!d) return; // user entered something that was not matched
+         var ui = {};

 
 

-             var field = d.field;
-             field.show();
-             selection.call(formFields); // rerender
+         var _loadPromise; // renders the iD interface into the container node

 
 

-             field.focus();
-           })); // avoid updating placeholder excessively (triggers style recalc)

 
 

-           if (_lastPlaceholder !== placeholder) {
-             input.attr('placeholder', placeholder);
-             _lastPlaceholder = placeholder;
-           }
-         }
+         ui.ensureLoaded = function () {
+           if (_loadPromise) return _loadPromise;
+           return _loadPromise = Promise.all([// must have strings and presets before loading the UI
+           _mainLocalizer.ensureLoaded(), _mainPresetIndex.ensureLoaded()]).then(function () {
+             if (!context.container().empty()) render(context.container());
+           })["catch"](function (err) {
+             return console.error(err);
+           }); // eslint-disable-line
+         }; // `ui.restart()` will destroy and rebuild the entire iD interface,
+         // for example to switch the locale while iD is running.

 
 

-         formFields.fieldsArr = function (val) {
-           if (!arguments.length) return _fieldsArr;
-           _fieldsArr = val || [];
-           return formFields;
-         };

 
 

-         formFields.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return formFields;
+         ui.restart = function () {
+           context.keybinding().clear();
+           _loadPromise = null;
+           context.container().selectAll('*').remove();
+           ui.ensureLoaded();

          };
 
          };
 

-         formFields.klass = function (val) {
-           if (!arguments.length) return _klass;
-           _klass = val;
-           return formFields;
+         ui.lastPointerType = function () {
+           return _lastPointerType;

          };
 
          };
 

-         return formFields;
-       }
+         ui.svgDefs = svgDefs(context);
+         ui.flash = uiFlash(context);
+         ui.sidebar = uiSidebar(context);
+         ui.photoviewer = uiPhotoviewer(context);
+         ui.shortcuts = uiShortcuts(context);

 
 

-       function uiSectionPresetFields(context) {
-         var section = uiSection('preset-fields', context).label(_t.html('inspector.fields')).disclosureContent(renderDisclosureContent);
-         var dispatch$1 = dispatch('change', 'revert');
-         var formFields = uiFormFields(context);
+         ui.onResize = function (withPan) {
+           var map = context.map(); // Recalc dimensions of map and sidebar.. (`true` = force recalc)
+           // This will call `getBoundingClientRect` and trigger reflow,
+           //  but the values will be cached for later use.

 
 

-         var _state;
+           var mapDimensions = utilGetDimensions(context.container().select('.main-content'), true);
+           utilGetDimensions(context.container().select('.sidebar'), true);

 
 

-         var _fieldsArr;
+           if (withPan !== undefined) {
+             map.redrawEnable(false);
+             map.pan(withPan);
+             map.redrawEnable(true);
+           }

 
 

-         var _presets = [];
+           map.dimensions(mapDimensions);
+           ui.photoviewer.onMapResize(); // check if header or footer have overflowed

 
 

-         var _tags;
+           ui.checkOverflow('.top-toolbar');
+           ui.checkOverflow('.map-footer-bar'); // Use outdated code so it works on Explorer

 
 

-         var _entityIDs;
+           var resizeWindowEvent = document.createEvent('Event');
+           resizeWindowEvent.initEvent('resizeWindow', true, true);
+           document.dispatchEvent(resizeWindowEvent);
+         }; // Call checkOverflow when resizing or whenever the contents change.

 
 

-         function renderDisclosureContent(selection) {
-           if (!_fieldsArr) {
-             var graph = context.graph();
-             var geometries = Object.keys(_entityIDs.reduce(function (geoms, entityID) {
-               geoms[graph.entity(entityID).geometry(graph)] = true;
-               return geoms;
-             }, {}));
-             var presetsManager = _mainPresetIndex;
-             var allFields = [];
-             var allMoreFields = [];
-             var sharedTotalFields;

 
 

-             _presets.forEach(function (preset) {
-               var fields = preset.fields();
-               var moreFields = preset.moreFields();
-               allFields = utilArrayUnion(allFields, fields);
-               allMoreFields = utilArrayUnion(allMoreFields, moreFields);
+         ui.checkOverflow = function (selector, reset) {
+           if (reset) {
+             delete _needWidth[selector];
+           }

 
 

-               if (!sharedTotalFields) {
-                 sharedTotalFields = utilArrayUnion(fields, moreFields);
-               } else {
-                 sharedTotalFields = sharedTotalFields.filter(function (field) {
-                   return fields.indexOf(field) !== -1 || moreFields.indexOf(field) !== -1;
-                 });
-               }
-             });
+           var selection = context.container().select(selector);
+           if (selection.empty()) return;
+           var scrollWidth = selection.property('scrollWidth');
+           var clientWidth = selection.property('clientWidth');
+           var needed = _needWidth[selector] || scrollWidth;

 
 

-             var sharedFields = allFields.filter(function (field) {
-               return sharedTotalFields.indexOf(field) !== -1;
-             });
-             var sharedMoreFields = allMoreFields.filter(function (field) {
-               return sharedTotalFields.indexOf(field) !== -1;
-             });
-             _fieldsArr = [];
-             sharedFields.forEach(function (field) {
-               if (field.matchAllGeometry(geometries)) {
-                 _fieldsArr.push(uiField(context, field, _entityIDs));
-               }
-             });
-             var singularEntity = _entityIDs.length === 1 && graph.hasEntity(_entityIDs[0]);
+           if (scrollWidth > clientWidth) {
+             // overflow happening
+             selection.classed('narrow', true);

 
 

-             if (singularEntity && singularEntity.isHighwayIntersection(graph) && presetsManager.field('restrictions')) {
-               _fieldsArr.push(uiField(context, presetsManager.field('restrictions'), _entityIDs));
+             if (!_needWidth[selector]) {
+               _needWidth[selector] = scrollWidth;

              }
              }

-
-             var additionalFields = utilArrayUnion(sharedMoreFields, presetsManager.universal());
-             additionalFields.sort(function (field1, field2) {
-               return field1.label().localeCompare(field2.label(), _mainLocalizer.localeCode());
-             });
-             additionalFields.forEach(function (field) {
-               if (sharedFields.indexOf(field) === -1 && field.matchAllGeometry(geometries)) {
-                 _fieldsArr.push(uiField(context, field, _entityIDs, {
-                   show: false
-                 }));
-               }
-             });
-
-             _fieldsArr.forEach(function (field) {
-               field.on('change', function (t, onInput) {
-                 dispatch$1.call('change', field, _entityIDs, t, onInput);
-               }).on('revert', function (keys) {
-                 dispatch$1.call('revert', field, keys);
-               });
-             });
+           } else if (scrollWidth >= needed) {
+             selection.classed('narrow', false);

            }
            }

+         };

 
 

-           _fieldsArr.forEach(function (field) {
-             field.state(_state).tags(_tags);
-           });
-
-           selection.call(formFields.fieldsArr(_fieldsArr).state(_state).klass('grouped-items-area'));
-           selection.selectAll('.wrap-form-field input').on('keydown', function (d3_event) {
-             // if user presses enter, and combobox is not active, accept edits..
-             if (d3_event.keyCode === 13 && // ↩ Return
-             context.container().select('.combobox').empty()) {
-               context.enter(modeBrowse(context));
-             }
-           });
-         }
+         ui.togglePanes = function (showPane) {
+           var hidePanes = context.container().selectAll('.map-pane.shown');
+           var side = _mainLocalizer.textDirection() === 'ltr' ? 'right' : 'left';
+           hidePanes.classed('shown', false).classed('hide', true);
+           context.container().selectAll('.map-pane-control button').classed('active', false);

 
 

-         section.presets = function (val) {
-           if (!arguments.length) return _presets;
+           if (showPane) {
+             hidePanes.classed('shown', false).classed('hide', true).style(side, '-500px');
+             context.container().selectAll('.' + showPane.attr('pane') + '-control button').classed('active', true);
+             showPane.classed('shown', true).classed('hide', false);

 
 

-           if (!_presets || !val || !utilArrayIdentical(_presets, val)) {
-             _presets = val;
-             _fieldsArr = null;
+             if (hidePanes.empty()) {
+               showPane.style(side, '-500px').transition().duration(200).style(side, '0px');
+             } else {
+               showPane.style(side, '0px');
+             }
+           } else {
+             hidePanes.classed('shown', true).classed('hide', false).style(side, '0px').transition().duration(200).style(side, '-500px').on('end', function () {
+               select(this).classed('shown', false).classed('hide', true);
+             });

            }
            }

-
-           return section;
-         };
-
-         section.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return section;

          };
 
          };
 

-         section.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val; // Don't reset _fieldsArr here.
+         var _editMenu = uiEditMenu(context);

 
 

-           return section;
+         ui.editMenu = function () {
+           return _editMenu;

          };
 
          };
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-
-           if (!val || !_entityIDs || !utilArrayIdentical(_entityIDs, val)) {
-             _entityIDs = val;
-             _fieldsArr = null;
-           }
+         ui.showEditMenu = function (anchorPoint, triggerType, operations) {
+           // remove any displayed menu
+           ui.closeEditMenu();
+           if (!operations && context.mode().operations) operations = context.mode().operations();
+           if (!operations || !operations.length) return; // disable menu if in wide selection, for example

 
 

-           return section;
-         };
+           if (!context.map().editableDataEnabled()) return;
+           var surfaceNode = context.surface().node();

 
 

-         return utilRebind(section, dispatch$1, 'on');
-       }
+           if (surfaceNode.focus) {
+             // FF doesn't support it
+             // focus the surface or else clicking off the menu may not trigger modeBrowse
+             surfaceNode.focus();
+           }

 
 

-       function uiSectionRawMemberEditor(context) {
-         var section = uiSection('raw-member-editor', context).shouldDisplay(function () {
-           if (!_entityIDs || _entityIDs.length !== 1) return false;
-           var entity = context.hasEntity(_entityIDs[0]);
-           return entity && entity.type === 'relation';
-         }).label(function () {
-           var entity = context.hasEntity(_entityIDs[0]);
-           if (!entity) return '';
-           var gt = entity.members.length > _maxMembers ? '>' : '';
-           var count = gt + entity.members.slice(0, _maxMembers).length;
-           return _t('inspector.title_count', {
-             title: _t.html('inspector.members'),
-             count: count
+           operations.forEach(function (operation) {
+             if (operation.point) operation.point(anchorPoint);

            });
            });

-         }).disclosureContent(renderDisclosureContent);
-         var taginfo = services.taginfo;
-
-         var _entityIDs;

 
 

-         var _maxMembers = 1000;
+           _editMenu.anchorLoc(anchorPoint).triggerType(triggerType).operations(operations); // render the menu

 
 

-         function downloadMember(d3_event, d) {
-           d3_event.preventDefault(); // display the loading indicator

 
 

-           select(this.parentNode).classed('tag-reference-loading', true);
-           context.loadEntity(d.id, function () {
-             section.reRender();
-           });
-         }
+           context.map().supersurface.call(_editMenu);
+         };

 
 

-         function zoomToMember(d3_event, d) {
-           d3_event.preventDefault();
-           var entity = context.entity(d.id);
-           context.map().zoomToEase(entity); // highlight the feature in case it wasn't previously on-screen
+         ui.closeEditMenu = function () {
+           // remove any existing menu no matter how it was added
+           context.map().supersurface.select('.edit-menu').remove();
+         };

 
 

-           utilHighlightEntities([d.id], true, context);
-         }
+         var _saveLoading = select(null);

 
 

-         function selectMember(d3_event, d) {
-           d3_event.preventDefault(); // remove the hover-highlight styling
+         context.uploader().on('saveStarted.ui', function () {
+           _saveLoading = uiLoading(context).message(_t.html('save.uploading')).blocking(true);
+           context.container().call(_saveLoading); // block input during upload
+         }).on('saveEnded.ui', function () {
+           _saveLoading.close();

 
 

-           utilHighlightEntities([d.id], false, context);
-           var entity = context.entity(d.id);
-           var mapExtent = context.map().extent();
+           _saveLoading = select(null);
+         });
+         return ui;
+       }

 
 

-           if (!entity.intersects(mapExtent, context.graph())) {
-             // zoom to the entity if its extent is not visible now
-             context.map().zoomToEase(entity);
-           }
+       function coreContext() {
+         var _this = this;

 
 

-           context.enter(modeSelect(context, [d.id]));
-         }
+         var dispatch = dispatch$8('enter', 'exit', 'change');
+         var context = utilRebind({}, dispatch, 'on');

 
 

-         function changeRole(d3_event, d) {
-           var oldRole = d.role;
-           var newRole = context.cleanRelationRole(select(this).property('value'));
+         var _deferred = new Set();

 
 

-           if (oldRole !== newRole) {
-             var member = {
-               id: d.id,
-               type: d.type,
-               role: newRole
-             };
-             context.perform(actionChangeMember(d.relation.id, member, d.index), _t('operations.change_role.annotation', {
-               n: 1
-             }));
-             context.validator().validate();
-           }
-         }
+         context.version = '2.20.2';
+         context.privacyVersion = '20201202'; // iD will alter the hash so cache the parameters intended to setup the session

 
 

-         function deleteMember(d3_event, d) {
-           // remove the hover-highlight styling
-           utilHighlightEntities([d.id], false, context);
-           context.perform(actionDeleteMember(d.relation.id, d.index), _t('operations.delete_member.annotation', {
-             n: 1
-           }));
+         context.initialHashParams = window.location.hash ? utilStringQs(window.location.hash) : {};
+         context.isFirstSession = !corePreferences('sawSplash') && !corePreferences('sawPrivacyVersion');
+         /* Changeset */
+         // An osmChangeset object. Not loaded until needed.

 
 

-           if (!context.hasEntity(d.relation.id)) {
-             // Removing the last member will also delete the relation.
-             // If this happens we need to exit the selection mode
-             context.enter(modeBrowse(context));
-           } else {
-             // Changing the mode also runs `validate`, but otherwise we need to
-             // rerun it manually
-             context.validator().validate();
-           }
-         }
+         context.changeset = null;
+         var _defaultChangesetComment = context.initialHashParams.comment;
+         var _defaultChangesetSource = context.initialHashParams.source;
+         var _defaultChangesetHashtags = context.initialHashParams.hashtags;

 
 

-         function renderDisclosureContent(selection) {
-           var entityID = _entityIDs[0];
-           var memberships = [];
-           var entity = context.entity(entityID);
-           entity.members.slice(0, _maxMembers).forEach(function (member, index) {
-             memberships.push({
-               index: index,
-               id: member.id,
-               type: member.type,
-               role: member.role,
-               relation: entity,
-               member: context.hasEntity(member.id),
-               domId: utilUniqueDomId(entityID + '-member-' + index)
-             });
-           });
-           var list = selection.selectAll('.member-list').data([0]);
-           list = list.enter().append('ul').attr('class', 'member-list').merge(list);
-           var items = list.selectAll('li').data(memberships, function (d) {
-             return osmEntity.key(d.relation) + ',' + d.index + ',' + (d.member ? osmEntity.key(d.member) : 'incomplete');
-           });
-           items.exit().each(unbind).remove();
-           var itemsEnter = items.enter().append('li').attr('class', 'member-row form-field').classed('member-incomplete', function (d) {
-             return !d.member;
-           });
-           itemsEnter.each(function (d) {
-             var item = select(this);
-             var label = item.append('label').attr('class', 'field-label').attr('for', d.domId);
+         context.defaultChangesetComment = function (val) {
+           if (!arguments.length) return _defaultChangesetComment;
+           _defaultChangesetComment = val;
+           return context;
+         };

 
 

-             if (d.member) {
-               // highlight the member feature in the map while hovering on the list item
-               item.on('mouseover', function () {
-                 utilHighlightEntities([d.id], true, context);
-               }).on('mouseout', function () {
-                 utilHighlightEntities([d.id], false, context);
-               });
-               var labelLink = label.append('span').attr('class', 'label-text').append('a').attr('href', '#').on('click', selectMember);
-               labelLink.append('span').attr('class', 'member-entity-type').html(function (d) {
-                 var matched = _mainPresetIndex.match(d.member, context.graph());
-                 return matched && matched.name() || utilDisplayType(d.member.id);
-               });
-               labelLink.append('span').attr('class', 'member-entity-name').html(function (d) {
-                 return utilDisplayName(d.member);
-               });
-               label.append('button').attr('title', _t('icons.remove')).attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete'));
-               label.append('button').attr('class', 'member-zoom').attr('title', _t('icons.zoom_to')).call(svgIcon('#iD-icon-framed-dot', 'monochrome')).on('click', zoomToMember);
-             } else {
-               var labelText = label.append('span').attr('class', 'label-text');
-               labelText.append('span').attr('class', 'member-entity-type').html(_t.html('inspector.' + d.type, {
-                 id: d.id
-               }));
-               labelText.append('span').attr('class', 'member-entity-name').html(_t.html('inspector.incomplete', {
-                 id: d.id
-               }));
-               label.append('button').attr('class', 'member-download').attr('title', _t('icons.download')).call(svgIcon('#iD-icon-load')).on('click', downloadMember);
-             }
-           });
-           var wrapEnter = itemsEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
-           wrapEnter.append('input').attr('class', 'member-role').attr('id', function (d) {
-             return d.domId;
-           }).property('type', 'text').attr('placeholder', _t('inspector.role')).call(utilNoAuto);
+         context.defaultChangesetSource = function (val) {
+           if (!arguments.length) return _defaultChangesetSource;
+           _defaultChangesetSource = val;
+           return context;
+         };

 
 

-           if (taginfo) {
-             wrapEnter.each(bindTypeahead);
-           } // update
+         context.defaultChangesetHashtags = function (val) {
+           if (!arguments.length) return _defaultChangesetHashtags;
+           _defaultChangesetHashtags = val;
+           return context;
+         };
+         /* Document title */

 
 

+         /* (typically shown as the label for the browser window/tab) */
+         // If true, iD will update the title based on what the user is doing

 
 

-           items = items.merge(itemsEnter).order();
-           items.select('input.member-role').property('value', function (d) {
-             return d.role;
-           }).on('blur', changeRole).on('change', changeRole);
-           items.select('button.member-delete').on('click', deleteMember);
-           var dragOrigin, targetIndex;
-           items.call(d3_drag().on('start', function (d3_event) {
-             dragOrigin = {
-               x: d3_event.x,
-               y: d3_event.y
-             };
-             targetIndex = null;
-           }).on('drag', function (d3_event) {
-             var x = d3_event.x - dragOrigin.x,
-                 y = d3_event.y - dragOrigin.y;
-             if (!select(this).classed('dragging') && // don't display drag until dragging beyond a distance threshold
-             Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) <= 5) return;
-             var index = items.nodes().indexOf(this);
-             select(this).classed('dragging', true);
-             targetIndex = null;
-             selection.selectAll('li.member-row').style('transform', function (d2, index2) {
-               var node = select(this).node();

 
 

-               if (index === index2) {
-                 return 'translate(' + x + 'px, ' + y + 'px)';
-               } else if (index2 > index && d3_event.y > node.offsetTop) {
-                 if (targetIndex === null || index2 > targetIndex) {
-                   targetIndex = index2;
-                 }
+         var _setsDocumentTitle = true;

 
 

-                 return 'translateY(-100%)';
-               } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
-                 if (targetIndex === null || index2 < targetIndex) {
-                   targetIndex = index2;
-                 }
+         context.setsDocumentTitle = function (val) {
+           if (!arguments.length) return _setsDocumentTitle;
+           _setsDocumentTitle = val;
+           return context;
+         }; // The part of the title that is always the same

 
 

-                 return 'translateY(100%)';
-               }

 
 

-               return null;
-             });
-           }).on('end', function (d3_event, d) {
-             if (!select(this).classed('dragging')) return;
-             var index = items.nodes().indexOf(this);
-             select(this).classed('dragging', false);
-             selection.selectAll('li.member-row').style('transform', null);
+         var _documentTitleBase = document.title;

 
 

-             if (targetIndex !== null) {
-               // dragged to a new position, reorder
-               context.perform(actionMoveMember(d.relation.id, index, targetIndex), _t('operations.reorder_members.annotation'));
-               context.validator().validate();
-             }
-           }));
+         context.documentTitleBase = function (val) {
+           if (!arguments.length) return _documentTitleBase;
+           _documentTitleBase = val;
+           return context;
+         };
+         /* User interface and keybinding */

 
 

-           function bindTypeahead(d) {
-             var row = select(this);
-             var role = row.selectAll('input.member-role');
-             var origValue = role.property('value');

 
 

-             function sort(value, data) {
-               var sameletter = [];
-               var other = [];
+         var _ui;

 
 

-               for (var i = 0; i < data.length; i++) {
-                 if (data[i].value.substring(0, value.length) === value) {
-                   sameletter.push(data[i]);
-                 } else {
-                   other.push(data[i]);
-                 }
-               }
+         context.ui = function () {
+           return _ui;
+         };

 
 

-               return sameletter.concat(other);
-             }
+         context.lastPointerType = function () {
+           return _ui.lastPointerType();
+         };

 
 

-             role.call(uiCombobox(context, 'member-role').fetcher(function (role, callback) {
-               // The `geometry` param is used in the `taginfo.js` interface for
-               // filtering results, as a key into the `tag_members_fractions`
-               // object.  If we don't know the geometry because the member is
-               // not yet downloaded, it's ok to guess based on type.
-               var geometry;
+         var _keybinding = utilKeybinding('context');

 
 

-               if (d.member) {
-                 geometry = context.graph().geometry(d.member.id);
-               } else if (d.type === 'relation') {
-                 geometry = 'relation';
-               } else if (d.type === 'way') {
-                 geometry = 'line';
-               } else {
-                 geometry = 'point';
-               }
+         context.keybinding = function () {
+           return _keybinding;
+         };

 
 

-               var rtype = entity.tags.type;
-               taginfo.roles({
-                 debounce: true,
-                 rtype: rtype || '',
-                 geometry: geometry,
-                 query: role
-               }, function (err, data) {
-                 if (!err) callback(sort(role, data));
-               });
-             }).on('cancel', function () {
-               role.property('value', origValue);
-             }));
-           }
+         select(document).call(_keybinding);
+         /* Straight accessors. Avoid using these if you can. */
+         // Instantiate the connection here because it doesn't require passing in
+         // `context` and it's needed for pre-init calls like `preauth`

 
 

-           function unbind() {
-             var row = select(this);
-             row.selectAll('input.member-role').call(uiCombobox.off, context);
-           }
-         }
+         var _connection = services.osm;

 
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return section;
+         var _history;
+
+         var _validator;
+
+         var _uploader;
+
+         context.connection = function () {
+           return _connection;

          };
 
          };
 

-         return section;
-       }
+         context.history = function () {
+           return _history;
+         };

 
 

-       function actionDeleteMembers(relationId, memberIndexes) {
-         return function (graph) {
-           // Remove the members in descending order so removals won't shift what members
-           // are at the remaining indexes
-           memberIndexes.sort(function (a, b) {
-             return b - a;
-           });
+         context.validator = function () {
+           return _validator;
+         };

 
 

-           for (var i in memberIndexes) {
-             graph = actionDeleteMember(relationId, memberIndexes[i])(graph);
+         context.uploader = function () {
+           return _uploader;
+         };
+         /* Connection */
+
+
+         context.preauth = function (options) {
+           if (_connection) {
+             _connection["switch"](options);

            }
 
            }
 

-           return graph;
+           return context;

          };
          };

-       }
+         /* connection options for source switcher (optional) */

 
 

-       function uiSectionRawMembershipEditor(context) {
-         var section = uiSection('raw-membership-editor', context).shouldDisplay(function () {
-           return _entityIDs && _entityIDs.length;
-         }).label(function () {
-           var parents = getSharedParentRelations();
-           var gt = parents.length > _maxMemberships ? '>' : '';
-           var count = gt + parents.slice(0, _maxMemberships).length;
-           return _t('inspector.title_count', {
-             title: _t.html('inspector.relations'),
-             count: count
-           });
-         }).disclosureContent(renderDisclosureContent);
-         var taginfo = services.taginfo;
-         var nearbyCombo = uiCombobox(context, 'parent-relation').minItems(1).fetcher(fetchNearbyRelations).itemsMouseEnter(function (d) {
-           if (d.relation) utilHighlightEntities([d.relation.id], true, context);
-         }).itemsMouseLeave(function (d) {
-           if (d.relation) utilHighlightEntities([d.relation.id], false, context);
-         });
-         var _inChange = false;
-         var _entityIDs = [];

 
 

-         var _showBlank;
+         var _apiConnections;

 
 

-         var _maxMemberships = 1000;
+         context.apiConnections = function (val) {
+           if (!arguments.length) return _apiConnections;
+           _apiConnections = val;
+           return context;
+         }; // A string or array or locale codes to prefer over the browser's settings

 
 

-         function getSharedParentRelations() {
-           var parents = [];

 
 

-           for (var i = 0; i < _entityIDs.length; i++) {
-             var entity = context.graph().hasEntity(_entityIDs[i]);
-             if (!entity) continue;
+         context.locale = function (locale) {
+           if (!arguments.length) return _mainLocalizer.localeCode();
+           _mainLocalizer.preferredLocaleCodes(locale);
+           return context;
+         };

 
 

-             if (i === 0) {
-               parents = context.graph().parentRelations(entity);
+         function afterLoad(cid, callback) {
+           return function (err, result) {
+             if (err) {
+               // 400 Bad Request, 401 Unauthorized, 403 Forbidden..
+               if (err.status === 400 || err.status === 401 || err.status === 403) {
+                 if (_connection) {
+                   _connection.logout();
+                 }
+               }
+
+               if (typeof callback === 'function') {
+                 callback(err);
+               }
+
+               return;
+             } else if (_connection && _connection.getConnectionId() !== cid) {
+               if (typeof callback === 'function') {
+                 callback({
+                   message: 'Connection Switched',
+                   status: -1
+                 });
+               }
+
+               return;

              } else {
              } else {

-               parents = utilArrayIntersection(parents, context.graph().parentRelations(entity));
-             }
+               _history.merge(result.data, result.extent);

 
 

-             if (!parents.length) break;
-           }
+               if (typeof callback === 'function') {
+                 callback(err, result);
+               }

 
 

-           return parents;
+               return;
+             }
+           };

          }
 
          }
 

-         function getMemberships() {
-           var memberships = [];
-           var relations = getSharedParentRelations().slice(0, _maxMemberships);
-           var isMultiselect = _entityIDs.length > 1;
-           var i, relation, membership, index, member, indexedMember;
+         context.loadTiles = function (projection, callback) {
+           var handle = window.requestIdleCallback(function () {
+             _deferred["delete"](handle);

 
 

-           for (i = 0; i < relations.length; i++) {
-             relation = relations[i];
-             membership = {
-               relation: relation,
-               members: [],
-               hash: osmEntity.key(relation)
-             };
+             if (_connection && context.editableDataEnabled()) {
+               var cid = _connection.getConnectionId();

 
 

-             for (index = 0; index < relation.members.length; index++) {
-               member = relation.members[index];
+               _connection.loadTiles(projection, afterLoad(cid, callback));
+             }
+           });

 
 

-               if (_entityIDs.indexOf(member.id) !== -1) {
-                 indexedMember = Object.assign({}, member, {
-                   index: index
-                 });
-                 membership.members.push(indexedMember);
-                 membership.hash += ',' + index.toString();
+           _deferred.add(handle);
+         };

 
 

-                 if (!isMultiselect) {
-                   // For single selections, list one entry per membership per relation.
-                   // For multiselections, list one entry per relation.
-                   memberships.push(membership);
-                   membership = {
-                     relation: relation,
-                     members: [],
-                     hash: osmEntity.key(relation)
-                   };
-                 }
-               }
+         context.loadTileAtLoc = function (loc, callback) {
+           var handle = window.requestIdleCallback(function () {
+             _deferred["delete"](handle);
+
+             if (_connection && context.editableDataEnabled()) {
+               var cid = _connection.getConnectionId();
+
+               _connection.loadTileAtLoc(loc, afterLoad(cid, callback));

              }
              }

+           });

 
 

-             if (membership.members.length) memberships.push(membership);
+           _deferred.add(handle);
+         }; // Download the full entity and its parent relations. The callback may be called multiple times.
+
+
+         context.loadEntity = function (entityID, callback) {
+           if (_connection) {
+             var cid = _connection.getConnectionId();
+
+             _connection.loadEntity(entityID, afterLoad(cid, callback)); // We need to fetch the parent relations separately.
+
+
+             _connection.loadEntityRelations(entityID, afterLoad(cid, callback));

            }
            }

+         };

 
 

-           memberships.forEach(function (membership) {
-             membership.domId = utilUniqueDomId('membership-' + membership.relation.id);
-             var roles = [];
-             membership.members.forEach(function (member) {
-               if (roles.indexOf(member.role) === -1) roles.push(member.role);
-             });
-             membership.role = roles.length === 1 ? roles[0] : roles;
-           });
-           return memberships;
-         }
+         context.zoomToEntity = function (entityID, zoomTo) {
+           // be sure to load the entity even if we're not going to zoom to it
+           context.loadEntity(entityID, function (err, result) {
+             if (err) return;

 
 

-         function selectRelation(d3_event, d) {
-           d3_event.preventDefault(); // remove the hover-highlight styling
+             if (zoomTo !== false) {
+               var entity = result.data.find(function (e) {
+                 return e.id === entityID;
+               });

 
 

-           utilHighlightEntities([d.relation.id], false, context);
-           context.enter(modeSelect(context, [d.relation.id]));
-         }
+               if (entity) {
+                 _map.zoomTo(entity);
+               }
+             }
+           });

 
 

-         function zoomToRelation(d3_event, d) {
-           d3_event.preventDefault();
-           var entity = context.entity(d.relation.id);
-           context.map().zoomToEase(entity); // highlight the relation in case it wasn't previously on-screen
+           _map.on('drawn.zoomToEntity', function () {
+             if (!context.hasEntity(entityID)) return;

 
 

-           utilHighlightEntities([d.relation.id], true, context);
-         }
+             _map.on('drawn.zoomToEntity', null);

 
 

-         function changeRole(d3_event, d) {
-           if (d === 0) return; // called on newrow (shouldn't happen)
+             context.on('enter.zoomToEntity', null);
+             context.enter(modeSelect(context, [entityID]));
+           });

 
 

-           if (_inChange) return; // avoid accidental recursive call #5731
+           context.on('enter.zoomToEntity', function () {
+             if (_mode.id !== 'browse') {
+               _map.on('drawn.zoomToEntity', null);

 
 

-           var newRole = context.cleanRelationRole(select(this).property('value'));
-           if (!newRole.trim() && typeof d.role !== 'string') return;
-           var membersToUpdate = d.members.filter(function (member) {
-             return member.role !== newRole;
+               context.on('enter.zoomToEntity', null);
+             }

            });
            });

+         };

 
 

-           if (membersToUpdate.length) {
-             _inChange = true;
-             context.perform(function actionChangeMemberRoles(graph) {
-               membersToUpdate.forEach(function (member) {
-                 var newMember = Object.assign({}, member, {
-                   role: newRole
-                 });
-                 delete newMember.index;
-                 graph = actionChangeMember(d.relation.id, newMember, member.index)(graph);
-               });
-               return graph;
-             }, _t('operations.change_role.annotation', {
-               n: membersToUpdate.length
-             }));
-             context.validator().validate();
+         var _minEditableZoom = 16;
+
+         context.minEditableZoom = function (val) {
+           if (!arguments.length) return _minEditableZoom;
+           _minEditableZoom = val;
+
+           if (_connection) {
+             _connection.tileZoom(val);

            }
 
            }
 

-           _inChange = false;
-         }
+           return context;
+         }; // String length limits in Unicode characters, not JavaScript UTF-16 code units

 
 

-         function addMembership(d, role) {
-           this.blur(); // avoid keeping focus on the button

 
 

-           _showBlank = false;
+         context.maxCharsForTagKey = function () {
+           return 255;
+         };

 
 

-           function actionAddMembers(relationId, ids, role) {
-             return function (graph) {
-               for (var i in ids) {
-                 var member = {
-                   id: ids[i],
-                   type: graph.entity(ids[i]).type,
-                   role: role
-                 };
-                 graph = actionAddMember(relationId, member)(graph);
-               }
+         context.maxCharsForTagValue = function () {
+           return 255;
+         };

 
 

-               return graph;
-             };
-           }
+         context.maxCharsForRelationRole = function () {
+           return 255;
+         };

 
 

-           if (d.relation) {
-             context.perform(actionAddMembers(d.relation.id, _entityIDs, role), _t('operations.add_member.annotation', {
-               n: _entityIDs.length
-             }));
-             context.validator().validate();
+         function cleanOsmString(val, maxChars) {
+           // be lenient with input
+           if (val === undefined || val === null) {
+             val = '';

            } else {
            } else {

-             var relation = osmRelation();
-             context.perform(actionAddEntity(relation), actionAddMembers(relation.id, _entityIDs, role), _t('operations.add.annotation.relation')); // changing the mode also runs `validate`
+             val = val.toString();
+           } // remove whitespace

 
 

-             context.enter(modeSelect(context, [relation.id]).newFeature(true));
-           }
-         }

 
 

-         function deleteMembership(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button
+           val = val.trim(); // use the canonical form of the string

 
 

-           if (d === 0) return; // called on newrow (shouldn't happen)
-           // remove the hover-highlight styling
+           if (val.normalize) val = val.normalize('NFC'); // trim to the number of allowed characters

 
 

-           utilHighlightEntities([d.relation.id], false, context);
-           var indexes = d.members.map(function (member) {
-             return member.index;
-           });
-           context.perform(actionDeleteMembers(d.relation.id, indexes), _t('operations.delete_member.annotation', {
-             n: _entityIDs.length
-           }));
-           context.validator().validate();
+           return utilUnicodeCharsTruncated(val, maxChars);

          }
 
          }
 

-         function fetchNearbyRelations(q, callback) {
-           var newRelation = {
-             relation: null,
-             value: _t('inspector.new_relation'),
-             display: _t.html('inspector.new_relation')
-           };
-           var entityID = _entityIDs[0];
-           var result = [];
-           var graph = context.graph();
+         context.cleanTagKey = function (val) {
+           return cleanOsmString(val, context.maxCharsForTagKey());
+         };

 
 

-           function baseDisplayLabel(entity) {
-             var matched = _mainPresetIndex.match(entity, graph);
-             var presetName = matched && matched.name() || _t('inspector.relation');
-             var entityName = utilDisplayName(entity) || '';
-             return presetName + ' ' + entityName;
-           }
+         context.cleanTagValue = function (val) {
+           return cleanOsmString(val, context.maxCharsForTagValue());
+         };

 
 

-           var explicitRelation = q && context.hasEntity(q.toLowerCase());
+         context.cleanRelationRole = function (val) {
+           return cleanOsmString(val, context.maxCharsForRelationRole());
+         };
+         /* History */

 
 

-           if (explicitRelation && explicitRelation.type === 'relation' && explicitRelation.id !== entityID) {
-             // loaded relation is specified explicitly, only show that
-             result.push({
-               relation: explicitRelation,
-               value: baseDisplayLabel(explicitRelation) + ' ' + explicitRelation.id
-             });
-           } else {
-             context.history().intersects(context.map().extent()).forEach(function (entity) {
-               if (entity.type !== 'relation' || entity.id === entityID) return;
-               var value = baseDisplayLabel(entity);
-               if (q && (value + ' ' + entity.id).toLowerCase().indexOf(q.toLowerCase()) === -1) return;
-               result.push({
-                 relation: entity,
-                 value: value
-               });
-             });
-             result.sort(function (a, b) {
-               return osmRelation.creationOrder(a.relation, b.relation);
-             }); // Dedupe identical names by appending relation id - see #2891

 
 

-             var dupeGroups = Object.values(utilArrayGroupBy(result, 'value')).filter(function (v) {
-               return v.length > 1;
-             });
-             dupeGroups.forEach(function (group) {
-               group.forEach(function (obj) {
-                 obj.value += ' ' + obj.relation.id;
-               });
+         var _inIntro = false;
+
+         context.inIntro = function (val) {
+           if (!arguments.length) return _inIntro;
+           _inIntro = val;
+           return context;
+         }; // Immediately save the user's history to localstorage, if possible
+         // This is called someteimes, but also on the `window.onbeforeunload` handler
+
+
+         context.save = function () {
+           // no history save, no message onbeforeunload
+           if (_inIntro || context.container().select('.modal').size()) return;
+           var canSave;
+
+           if (_mode && _mode.id === 'save') {
+             canSave = false; // Attempt to prevent user from creating duplicate changes - see #5200
+
+             if (services.osm && services.osm.isChangesetInflight()) {
+               _history.clearSaved();
+
+               return;
+             }
+           } else {
+             canSave = context.selectedIDs().every(function (id) {
+               var entity = context.hasEntity(id);
+               return entity && !entity.isDegenerate();

              });
            }
 
              });
            }
 

-           result.forEach(function (obj) {
-             obj.title = obj.value;
-           });
-           result.unshift(newRelation);
-           callback(result);
+           if (canSave) {
+             _history.save();
+           }
+
+           if (_history.hasChanges()) {
+             return _t('save.unsaved_changes');
+           }
+         }; // Debounce save, since it's a synchronous localStorage write,
+         // and history changes can happen frequently (e.g. when dragging).
+
+
+         context.debouncedSave = debounce(context.save, 350);
+
+         function withDebouncedSave(fn) {
+           return function () {
+             var result = fn.apply(_history, arguments);
+             context.debouncedSave();
+             return result;
+           };

          }
          }

+         /* Graph */

 
 

-         function renderDisclosureContent(selection) {
-           var memberships = getMemberships();
-           var list = selection.selectAll('.member-list').data([0]);
-           list = list.enter().append('ul').attr('class', 'member-list').merge(list);
-           var items = list.selectAll('li.member-row-normal').data(memberships, function (d) {
-             return d.hash;
-           });
-           items.exit().each(unbind).remove(); // Enter

 
 

-           var itemsEnter = items.enter().append('li').attr('class', 'member-row member-row-normal form-field'); // highlight the relation in the map while hovering on the list item
+         context.hasEntity = function (id) {
+           return _history.graph().hasEntity(id);
+         };

 
 

-           itemsEnter.on('mouseover', function (d3_event, d) {
-             utilHighlightEntities([d.relation.id], true, context);
-           }).on('mouseout', function (d3_event, d) {
-             utilHighlightEntities([d.relation.id], false, context);
-           });
-           var labelEnter = itemsEnter.append('label').attr('class', 'field-label').attr('for', function (d) {
-             return d.domId;
-           });
-           var labelLink = labelEnter.append('span').attr('class', 'label-text').append('a').attr('href', '#').on('click', selectRelation);
-           labelLink.append('span').attr('class', 'member-entity-type').html(function (d) {
-             var matched = _mainPresetIndex.match(d.relation, context.graph());
-             return matched && matched.name() || _t('inspector.relation');
-           });
-           labelLink.append('span').attr('class', 'member-entity-name').html(function (d) {
-             return utilDisplayName(d.relation);
-           });
-           labelEnter.append('button').attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete')).on('click', deleteMembership);
-           labelEnter.append('button').attr('class', 'member-zoom').attr('title', _t('icons.zoom_to')).call(svgIcon('#iD-icon-framed-dot', 'monochrome')).on('click', zoomToRelation);
-           var wrapEnter = itemsEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
-           wrapEnter.append('input').attr('class', 'member-role').attr('id', function (d) {
-             return d.domId;
-           }).property('type', 'text').property('value', function (d) {
-             return typeof d.role === 'string' ? d.role : '';
-           }).attr('title', function (d) {
-             return Array.isArray(d.role) ? d.role.filter(Boolean).join('\n') : d.role;
-           }).attr('placeholder', function (d) {
-             return Array.isArray(d.role) ? _t('inspector.multiple_roles') : _t('inspector.role');
-           }).classed('mixed', function (d) {
-             return Array.isArray(d.role);
-           }).call(utilNoAuto).on('blur', changeRole).on('change', changeRole);
+         context.entity = function (id) {
+           return _history.graph().entity(id);
+         };
+         /* Modes */

 
 

-           if (taginfo) {
-             wrapEnter.each(bindTypeahead);
+
+         var _mode;
+
+         context.mode = function () {
+           return _mode;
+         };
+
+         context.enter = function (newMode) {
+           if (_mode) {
+             _mode.exit();
+
+             dispatch.call('exit', _this, _mode);

            }
 
            }
 

-           var newMembership = list.selectAll('.member-row-new').data(_showBlank ? [0] : []); // Exit
+           _mode = newMode;

 
 

-           newMembership.exit().remove(); // Enter
+           _mode.enter();

 
 

-           var newMembershipEnter = newMembership.enter().append('li').attr('class', 'member-row member-row-new form-field');
-           var newLabelEnter = newMembershipEnter.append('label').attr('class', 'field-label');
-           newLabelEnter.append('input').attr('placeholder', _t('inspector.choose_relation')).attr('type', 'text').attr('class', 'member-entity-input').call(utilNoAuto);
-           newLabelEnter.append('button').attr('class', 'remove member-delete').call(svgIcon('#iD-operation-delete')).on('click', function () {
-             list.selectAll('.member-row-new').remove();
-           });
-           var newWrapEnter = newMembershipEnter.append('div').attr('class', 'form-field-input-wrap form-field-input-member');
-           newWrapEnter.append('input').attr('class', 'member-role').property('type', 'text').attr('placeholder', _t('inspector.role')).call(utilNoAuto); // Update
+           dispatch.call('enter', _this, _mode);
+         };

 
 

-           newMembership = newMembership.merge(newMembershipEnter);
-           newMembership.selectAll('.member-entity-input').on('blur', cancelEntity) // if it wasn't accepted normally, cancel it
-           .call(nearbyCombo.on('accept', acceptEntity).on('cancel', cancelEntity)); // Container for the Add button
+         context.selectedIDs = function () {
+           return _mode && _mode.selectedIDs && _mode.selectedIDs() || [];
+         };

 
 

-           var addRow = selection.selectAll('.add-row').data([0]); // enter
+         context.activeID = function () {
+           return _mode && _mode.activeID && _mode.activeID();
+         };

 
 

-           var addRowEnter = addRow.enter().append('div').attr('class', 'add-row');
-           var addRelationButton = addRowEnter.append('button').attr('class', 'add-relation');
-           addRelationButton.call(svgIcon('#iD-icon-plus', 'light'));
-           addRelationButton.call(uiTooltip().title(_t.html('inspector.add_to_relation')).placement(_mainLocalizer.textDirection() === 'ltr' ? 'right' : 'left'));
-           addRowEnter.append('div').attr('class', 'space-value'); // preserve space
+         var _selectedNoteID;

 
 

-           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
-           // update
+         context.selectedNoteID = function (noteID) {
+           if (!arguments.length) return _selectedNoteID;
+           _selectedNoteID = noteID;
+           return context;
+         }; // NOTE: Don't change the name of this until UI v3 is merged

 
 

-           addRow = addRow.merge(addRowEnter);
-           addRow.select('.add-relation').on('click', function () {
-             _showBlank = true;
-             section.reRender();
-             list.selectAll('.member-entity-input').node().focus();
-           });

 
 

-           function acceptEntity(d) {
-             if (!d) {
-               cancelEntity();
-               return;
-             } // remove hover-higlighting
+         var _selectedErrorID;

 
 

+         context.selectedErrorID = function (errorID) {
+           if (!arguments.length) return _selectedErrorID;
+           _selectedErrorID = errorID;
+           return context;
+         };
+         /* Behaviors */

 
 

-             if (d.relation) utilHighlightEntities([d.relation.id], false, context);
-             var role = context.cleanRelationRole(list.selectAll('.member-row-new .member-role').property('value'));
-             addMembership(d, role);
-           }

 
 

-           function cancelEntity() {
-             var input = newMembership.selectAll('.member-entity-input');
-             input.property('value', ''); // remove hover-higlighting
+         context.install = function (behavior) {
+           return context.surface().call(behavior);
+         };

 
 

-             context.surface().selectAll('.highlighted').classed('highlighted', false);
-           }
+         context.uninstall = function (behavior) {
+           return context.surface().call(behavior.off);
+         };
+         /* Copy/Paste */

 
 

-           function bindTypeahead(d) {
-             var row = select(this);
-             var role = row.selectAll('input.member-role');
-             var origValue = role.property('value');

 
 

-             function sort(value, data) {
-               var sameletter = [];
-               var other = [];
+         var _copyGraph;

 
 

-               for (var i = 0; i < data.length; i++) {
-                 if (data[i].value.substring(0, value.length) === value) {
-                   sameletter.push(data[i]);
-                 } else {
-                   other.push(data[i]);
-                 }
-               }
+         context.copyGraph = function () {
+           return _copyGraph;
+         };

 
 

-               return sameletter.concat(other);
-             }
+         var _copyIDs = [];

 
 

-             role.call(uiCombobox(context, 'member-role').fetcher(function (role, callback) {
-               var rtype = d.relation.tags.type;
-               taginfo.roles({
-                 debounce: true,
-                 rtype: rtype || '',
-                 geometry: context.graph().geometry(_entityIDs[0]),
-                 query: role
-               }, function (err, data) {
-                 if (!err) callback(sort(role, data));
-               });
-             }).on('cancel', function () {
-               role.property('value', origValue);
-             }));
-           }
+         context.copyIDs = function (val) {
+           if (!arguments.length) return _copyIDs;
+           _copyIDs = val;
+           _copyGraph = _history.graph();
+           return context;
+         };

 
 

-           function unbind() {
-             var row = select(this);
-             row.selectAll('input.member-role').call(uiCombobox.off, context);
-           }
-         }
+         var _copyLonLat;

 
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _showBlank = false;
-           return section;
+         context.copyLonLat = function (val) {
+           if (!arguments.length) return _copyLonLat;
+           _copyLonLat = val;
+           return context;

          };
          };

+         /* Background */

 
 

-         return section;
-       }

 
 

-       function uiSectionSelectionList(context) {
-         var _selectedIDs = [];
-         var section = uiSection('selected-features', context).shouldDisplay(function () {
-           return _selectedIDs.length > 1;
-         }).label(function () {
-           return _t('inspector.title_count', {
-             title: _t.html('inspector.features'),
-             count: _selectedIDs.length
-           });
-         }).disclosureContent(renderDisclosureContent);
-         context.history().on('change.selectionList', function (difference) {
-           if (difference) {
-             section.reRender();
-           }
-         });
+         var _background;

 
 

-         section.entityIDs = function (val) {
-           if (!arguments.length) return _selectedIDs;
-           _selectedIDs = val;
-           return section;
+         context.background = function () {
+           return _background;

          };
          };

+         /* Features */

 
 

-         function selectEntity(d3_event, entity) {
-           context.enter(modeSelect(context, [entity.id]));
-         }

 
 

-         function deselectEntity(d3_event, entity) {
-           d3_event.stopPropagation();
+         var _features;

 
 

-           var selectedIDs = _selectedIDs.slice();
+         context.features = function () {
+           return _features;
+         };

 
 

-           var index = selectedIDs.indexOf(entity.id);
+         context.hasHiddenConnections = function (id) {
+           var graph = _history.graph();

 
 

-           if (index > -1) {
-             selectedIDs.splice(index, 1);
-             context.enter(modeSelect(context, selectedIDs));
-           }
-         }
+           var entity = graph.entity(id);
+           return _features.hasHiddenConnections(entity, graph);
+         };
+         /* Photos */

 
 

-         function renderDisclosureContent(selection) {
-           var list = selection.selectAll('.feature-list').data([0]);
-           list = list.enter().append('div').attr('class', 'feature-list').merge(list);

 
 

-           var entities = _selectedIDs.map(function (id) {
-             return context.hasEntity(id);
-           }).filter(Boolean);
+         var _photos;

 
 

-           var items = list.selectAll('.feature-list-item').data(entities, osmEntity.key);
-           items.exit().remove(); // Enter
+         context.photos = function () {
+           return _photos;
+         };
+         /* Map */

 
 

-           var enter = items.enter().append('button').attr('class', 'feature-list-item').on('click', selectEntity);
-           enter.each(function (d) {
-             select(this).on('mouseover', function () {
-               utilHighlightEntities([d.id], true, context);
-             });
-             select(this).on('mouseout', function () {
-               utilHighlightEntities([d.id], false, context);
-             });
-           });
-           var label = enter.append('div').attr('class', 'label');
-           enter.append('button').attr('class', 'close').attr('title', _t('icons.deselect')).on('click', deselectEntity).call(svgIcon('#iD-icon-close'));
-           label.append('span').attr('class', 'entity-geom-icon').call(svgIcon('', 'pre-text'));
-           label.append('span').attr('class', 'entity-type');
-           label.append('span').attr('class', 'entity-name'); // Update

 
 

-           items = items.merge(enter);
-           items.selectAll('.entity-geom-icon use').attr('href', function () {
-             var entity = this.parentNode.parentNode.__data__;
-             return '#iD-icon-' + entity.geometry(context.graph());
-           });
-           items.selectAll('.entity-type').html(function (entity) {
-             return _mainPresetIndex.match(entity, context.graph()).name();
-           });
-           items.selectAll('.entity-name').html(function (d) {
-             // fetch latest entity
-             var entity = context.entity(d.id);
-             return utilDisplayName(entity);
-           });
-         }
+         var _map;

 
 

-         return section;
-       }
+         context.map = function () {
+           return _map;
+         };

 
 

-       function uiEntityEditor(context) {
-         var dispatch$1 = dispatch('choose');
-         var _state = 'select';
-         var _coalesceChanges = false;
-         var _modified = false;
+         context.layers = function () {
+           return _map.layers();
+         };

 
 

-         var _base;
+         context.surface = function () {
+           return _map.surface;
+         };

 
 

-         var _entityIDs;
+         context.editableDataEnabled = function () {
+           return _map.editableDataEnabled();
+         };

 
 

-         var _activePresets = [];
+         context.surfaceRect = function () {
+           return _map.surface.node().getBoundingClientRect();
+         };

 
 

-         var _newFeature;
+         context.editable = function () {
+           // don't allow editing during save
+           var mode = context.mode();
+           if (!mode || mode.id === 'save') return false;
+           return _map.editableDataEnabled();
+         };
+         /* Debug */

 
 

-         var _sections;

 
 

-         function entityEditor(selection) {
-           var combinedTags = utilCombinedTags(_entityIDs, context.graph()); // Header
+         var _debugFlags = {
+           tile: false,
+           // tile boundaries
+           collision: false,
+           // label collision bounding boxes
+           imagery: false,
+           // imagery bounding polygons
+           target: false,
+           // touch targets
+           downloaded: false // downloaded data from osm

 
 

-           var header = selection.selectAll('.header').data([0]); // Enter
+         };

 
 

-           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'preset-reset preset-choose').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-forward' : '#iD-icon-backward'));
-           headerEnter.append('button').attr('class', 'close').on('click', function () {
-             context.enter(modeBrowse(context));
-           }).call(svgIcon(_modified ? '#iD-icon-apply' : '#iD-icon-close'));
-           headerEnter.append('h3'); // Update
+         context.debugFlags = function () {
+           return _debugFlags;
+         };

 
 

-           header = header.merge(headerEnter);
-           header.selectAll('h3').html(_entityIDs.length === 1 ? _t.html('inspector.edit') : _t.html('inspector.edit_features'));
-           header.selectAll('.preset-reset').on('click', function () {
-             dispatch$1.call('choose', this, _activePresets);
-           }); // Body
+         context.getDebug = function (flag) {
+           return flag && _debugFlags[flag];
+         };

 
 

-           var body = selection.selectAll('.inspector-body').data([0]); // Enter
+         context.setDebug = function (flag, val) {
+           if (arguments.length === 1) val = true;
+           _debugFlags[flag] = val;
+           dispatch.call('change');
+           return context;
+         };
+         /* Container */

 
 

-           var bodyEnter = body.enter().append('div').attr('class', 'entity-editor inspector-body sep-top'); // Update

 
 

-           body = body.merge(bodyEnter);
+         var _container = select(null);

 
 

-           if (!_sections) {
-             _sections = [uiSectionSelectionList(context), uiSectionFeatureType(context).on('choose', function (presets) {
-               dispatch$1.call('choose', this, presets);
-             }), uiSectionEntityIssues(context), uiSectionPresetFields(context).on('change', changeTags).on('revert', revertTags), uiSectionRawTagEditor('raw-tag-editor', context).on('change', changeTags), uiSectionRawMemberEditor(context), uiSectionRawMembershipEditor(context)];
-           }
+         context.container = function (val) {
+           if (!arguments.length) return _container;
+           _container = val;

 
 

-           _sections.forEach(function (section) {
-             if (section.entityIDs) {
-               section.entityIDs(_entityIDs);
-             }
+           _container.classed('ideditor', true);

 
 

-             if (section.presets) {
-               section.presets(_activePresets);
-             }
+           return context;
+         };

 
 

-             if (section.tags) {
-               section.tags(combinedTags);
-             }
+         context.containerNode = function (val) {
+           if (!arguments.length) return context.container().node();
+           context.container(select(val));
+           return context;
+         };

 
 

-             if (section.state) {
-               section.state(_state);
-             }
+         var _embed;

 
 

-             body.call(section.render);
-           });
+         context.embed = function (val) {
+           if (!arguments.length) return _embed;
+           _embed = val;
+           return context;
+         };
+         /* Assets */

 
 

-           context.history().on('change.entity-editor', historyChanged);

 
 

-           function historyChanged(difference) {
-             if (selection.selectAll('.entity-editor').empty()) return;
-             if (_state === 'hide') return;
-             var significant = !difference || difference.didChange.properties || difference.didChange.addition || difference.didChange.deletion;
-             if (!significant) return;
-             _entityIDs = _entityIDs.filter(context.hasEntity);
-             if (!_entityIDs.length) return;
-             var priorActivePreset = _activePresets.length === 1 && _activePresets[0];
-             loadActivePresets();
-             var graph = context.graph();
-             entityEditor.modified(_base !== graph);
-             entityEditor(selection);
+         var _assetPath = '';

 
 

-             if (priorActivePreset && _activePresets.length === 1 && priorActivePreset !== _activePresets[0]) {
-               // flash the button to indicate the preset changed
-               context.container().selectAll('.entity-editor button.preset-reset .label').style('background-color', '#fff').transition().duration(750).style('background-color', null);
-             }
-           }
-         } // Tag changes that fire on input can all get coalesced into a single
-         // history operation when the user leaves the field.  #2342
-         // Use explicit entityIDs in case the selection changes before the event is fired.
+         context.assetPath = function (val) {
+           if (!arguments.length) return _assetPath;
+           _assetPath = val;
+           _mainFileFetcher.assetPath(val);
+           return context;
+         };

 
 

+         var _assetMap = {};

 
 

-         function changeTags(entityIDs, changed, onInput) {
-           var actions = [];
+         context.assetMap = function (val) {
+           if (!arguments.length) return _assetMap;
+           _assetMap = val;
+           _mainFileFetcher.assetMap(val);
+           return context;
+         };

 
 

-           for (var i in entityIDs) {
-             var entityID = entityIDs[i];
-             var entity = context.entity(entityID);
-             var tags = Object.assign({}, entity.tags); // shallow copy
+         context.asset = function (val) {
+           if (/^http(s)?:\/\//i.test(val)) return val;
+           var filename = _assetPath + val;
+           return _assetMap[filename] || filename;
+         };

 
 

-             for (var k in changed) {
-               if (!k) continue;
-               var v = changed[k];
+         context.imagePath = function (val) {
+           return context.asset("img/".concat(val));
+         };
+         /* reset (aka flush) */

 
 

-               if (v !== undefined || tags.hasOwnProperty(k)) {
-                 tags[k] = v;
-               }
-             }

 
 

-             if (!onInput) {
-               tags = utilCleanTags(tags);
-             }
+         context.reset = context.flush = function () {
+           context.debouncedSave.cancel();
+           Array.from(_deferred).forEach(function (handle) {
+             window.cancelIdleCallback(handle);

 
 

-             if (!fastDeepEqual(entity.tags, tags)) {
-               actions.push(actionChangeTags(entityID, tags));
+             _deferred["delete"](handle);
+           });
+           Object.values(services).forEach(function (service) {
+             if (service && typeof service.reset === 'function') {
+               service.reset(context);

              }
              }

-           }
+           });
+           context.changeset = null;
+
+           _validator.reset();
+
+           _features.reset();
+
+           _history.reset();
+
+           _uploader.reset(); // don't leave stale state in the inspector

 
 

-           if (actions.length) {
-             var combinedAction = function combinedAction(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
-               });
-               return graph;
-             };

 
 

-             var annotation = _t('operations.change_tags.annotation');
+           context.container().select('.inspector-wrap *').remove();
+           return context;
+         };
+         /* Projections */

 
 

-             if (_coalesceChanges) {
-               context.overwrite(combinedAction, annotation);
-             } else {
-               context.perform(combinedAction, annotation);
-               _coalesceChanges = !!onInput;
-             }
-           } // if leaving field (blur event), rerun validation

 
 

+         context.projection = geoRawMercator();
+         context.curtainProjection = geoRawMercator();
+         /* Init */

 
 

-           if (!onInput) {
-             context.validator().validate();
-           }
-         }
+         context.init = function () {
+           instantiateInternal();
+           initializeDependents();
+           return context; // Load variables and properties. No property of `context` should be accessed
+           // until this is complete since load statuses are indeterminate. The order
+           // of instantiation shouldn't matter.

 
 

-         function revertTags(keys) {
-           var actions = [];
+           function instantiateInternal() {
+             _history = coreHistory(context);
+             context.graph = _history.graph;
+             context.pauseChangeDispatch = _history.pauseChangeDispatch;
+             context.resumeChangeDispatch = _history.resumeChangeDispatch;
+             context.perform = withDebouncedSave(_history.perform);
+             context.replace = withDebouncedSave(_history.replace);
+             context.pop = withDebouncedSave(_history.pop);
+             context.overwrite = withDebouncedSave(_history.overwrite);
+             context.undo = withDebouncedSave(_history.undo);
+             context.redo = withDebouncedSave(_history.redo);
+             _validator = coreValidator(context);
+             _uploader = coreUploader(context);
+             _background = rendererBackground(context);
+             _features = rendererFeatures(context);
+             _map = rendererMap(context);
+             _photos = rendererPhotos(context);
+             _ui = uiInit(context);
+           } // Set up objects that might need to access properties of `context`. The order
+           // might matter if dependents make calls to each other. Be wary of async calls.

 
 

-           for (var i in _entityIDs) {
-             var entityID = _entityIDs[i];
-             var original = context.graph().base().entities[entityID];
-             var changed = {};

 
 

-             for (var j in keys) {
-               var key = keys[j];
-               changed[key] = original ? original.tags[key] : undefined;
+           function initializeDependents() {
+             if (context.initialHashParams.presets) {
+               _mainPresetIndex.addablePresetIDs(new Set(context.initialHashParams.presets.split(',')));

              }
 
              }
 

-             var entity = context.entity(entityID);
-             var tags = Object.assign({}, entity.tags); // shallow copy
+             if (context.initialHashParams.locale) {
+               _mainLocalizer.preferredLocaleCodes(context.initialHashParams.locale);
+             } // kick off some async work

 
 

-             for (var k in changed) {
-               if (!k) continue;
-               var v = changed[k];

 
 

-               if (v !== undefined || tags.hasOwnProperty(k)) {
-                 tags[k] = v;
+             _mainLocalizer.ensureLoaded();
+
+             _background.ensureLoaded();
+
+             _mainPresetIndex.ensureLoaded();
+             Object.values(services).forEach(function (service) {
+               if (service && typeof service.init === 'function') {
+                 service.init();

                }
                }

-             }
+             });

 
 

-             tags = utilCleanTags(tags);
+             _map.init();

 
 

-             if (!fastDeepEqual(entity.tags, tags)) {
-               actions.push(actionChangeTags(entityID, tags));
-             }
-           }
+             _validator.init();

 
 

-           if (actions.length) {
-             var combinedAction = function combinedAction(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
+             _features.init();
+
+             if (services.maprules && context.initialHashParams.maprules) {
+               d3_json(context.initialHashParams.maprules).then(function (mapcss) {
+                 services.maprules.init();
+                 mapcss.forEach(function (mapcssSelector) {
+                   return services.maprules.addRule(mapcssSelector);
+                 });
+               })["catch"](function () {
+                 /* ignore */

                });
                });

-               return graph;
-             };
+             } // if the container isn't available, e.g. when testing, don't load the UI

 
 

-             var annotation = _t('operations.change_tags.annotation');

 
 

-             if (_coalesceChanges) {
-               context.overwrite(combinedAction, annotation);
-             } else {
-               context.perform(combinedAction, annotation);
-               _coalesceChanges = false;
+             if (!context.container().empty()) {
+               _ui.ensureLoaded().then(function () {
+                 _photos.init();
+               });

              }
            }
              }
            }

-
-           context.validator().validate();
-         }
-
-         entityEditor.modified = function (val) {
-           if (!arguments.length) return _modified;
-           _modified = val;
-           return entityEditor;

          };
 
          };
 

-         entityEditor.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return entityEditor;
-         };
+         return context;
+       }

 
 

-         entityEditor.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           if (val && _entityIDs && utilArrayIdentical(_entityIDs, val)) return entityEditor; // exit early if no change
+       // NSI contains the most correct tagging for many commonly mapped features.
+       // See https://github.com/osmlab/name-suggestion-index  and  https://nsi.guide
+       // DATA

 
 

-           _entityIDs = val;
-           _base = context.graph();
-           _coalesceChanges = false;
-           loadActivePresets(true);
-           return entityEditor.modified(false);
-         };
+       var _nsiStatus = 'loading'; // 'loading', 'ok', 'failed'

 
 

-         entityEditor.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return entityEditor;
-         };
+       var _nsi = {}; // Sometimes we can upgrade a feature tagged like `building=yes` to a better tag.

 
 

-         function loadActivePresets(isForNewSelection) {
-           var graph = context.graph();
-           var counts = {};
+       var buildingPreset = {
+         'building/commercial': true,
+         'building/government': true,
+         'building/hotel': true,
+         'building/retail': true,
+         'building/office': true,
+         'building/supermarket': true,
+         'building/yes': true
+       }; // Exceptions to the namelike regexes.
+       // Usually a tag suffix contains a language code like `name:en`, `name:ru`
+       // but we want to exclude things like `operator:type`, `name:etymology`, etc..

 
 

-           for (var i in _entityIDs) {
-             var entity = graph.hasEntity(_entityIDs[i]);
-             if (!entity) return;
-             var match = _mainPresetIndex.match(entity, graph);
-             if (!counts[match.id]) counts[match.id] = 0;
-             counts[match.id] += 1;
-           }
+       var notNames = /:(colou?r|type|forward|backward|left|right|etymology|pronunciation|wikipedia)$/i; // Exceptions to the branchlike regexes

 
 

-           var matches = Object.keys(counts).sort(function (p1, p2) {
-             return counts[p2] - counts[p1];
-           }).map(function (pID) {
-             return _mainPresetIndex.item(pID);
-           });
+       var notBranches = /(coop|express|wireless|factory|outlet)/i; // PRIVATE FUNCTIONS
+       // `setNsiSources()`
+       // Adds the sources to iD's filemap so we can start downloading data.
+       //

 
 

-           if (!isForNewSelection) {
-             // A "weak" preset doesn't set any tags. (e.g. "Address")
-             var weakPreset = _activePresets.length === 1 && !_activePresets[0].isFallback() && Object.keys(_activePresets[0].addTags || {}).length === 0; // Don't replace a weak preset with a fallback preset (e.g. "Point")
+       function setNsiSources() {
+         var nsiVersion = packageJSON.devDependencies['name-suggestion-index'];
+         var v = parseVersion(nsiVersion);
+         var vMinor = "".concat(v.major, ".").concat(v.minor);
+         var sources = {
+           'nsi_data': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/nsi.min.json"),
+           'nsi_dissolved': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/dissolved.min.json"),
+           'nsi_features': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/featureCollection.min.json"),
+           'nsi_generics': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/genericWords.min.json"),
+           'nsi_presets': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/presets/nsi-id-presets.min.json"),
+           'nsi_replacements': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/replacements.min.json"),
+           'nsi_trees': "https://cdn.jsdelivr.net/npm/name-suggestion-index@".concat(vMinor, "/dist/trees.min.json")
+         };
+         var fileMap = _mainFileFetcher.fileMap();
+
+         for (var k in sources) {
+           if (!fileMap[k]) fileMap[k] = sources[k];
+         }
+       } // `loadNsiPresets()`
+       //  Returns a Promise fulfilled when the presets have been downloaded and merged into iD.
+       //

 
 

-             if (weakPreset && matches.length === 1 && matches[0].isFallback()) return;
-           }

 
 

-           entityEditor.presets(matches);
-         }
+       function loadNsiPresets() {
+         return Promise.all([_mainFileFetcher.get('nsi_presets'), _mainFileFetcher.get('nsi_features')]).then(function (vals) {
+           // Add `suggestion=true` to all the nsi presets
+           // The preset json schema doesn't include it, but the iD code still uses it
+           Object.values(vals[0].presets).forEach(function (preset) {
+             return preset.suggestion = true;
+           });
+           _mainPresetIndex.merge({
+             presets: vals[0].presets,
+             featureCollection: vals[1]
+           });
+         });
+       } // `loadNsiData()`
+       //  Returns a Promise fulfilled when the other data have been downloaded and processed
+       //

 
 

-         entityEditor.presets = function (val) {
-           if (!arguments.length) return _activePresets; // don't reload the same preset

 
 

-           if (!utilArrayIdentical(val, _activePresets)) {
-             _activePresets = val;
-           }
+       function loadNsiData() {
+         return Promise.all([_mainFileFetcher.get('nsi_data'), _mainFileFetcher.get('nsi_dissolved'), _mainFileFetcher.get('nsi_replacements'), _mainFileFetcher.get('nsi_trees')]).then(function (vals) {
+           _nsi = {
+             data: vals[0].nsi,
+             // the raw name-suggestion-index data
+             dissolved: vals[1].dissolved,
+             // list of dissolved items
+             replacements: vals[2].replacements,
+             // trivial old->new qid replacements
+             trees: vals[3].trees,
+             // metadata about trees, main tags
+             kvt: new Map(),
+             // Map (k -> Map (v -> t) )
+             qids: new Map(),
+             // Map (wd/wp tag values -> qids)
+             ids: new Map() // Map (id -> NSI item)

 
 

-           return entityEditor;
-         };
+           };
+           _nsi.matcher = new Matcher();

 
 

-         return utilRebind(entityEditor, dispatch$1, 'on');
-       }
+           _nsi.matcher.buildMatchIndex(_nsi.data);

 
 

-       function uiPresetList(context) {
-         var dispatch$1 = dispatch('cancel', 'choose');
+           _nsi.matcher.buildLocationIndex(_nsi.data, _mainLocations.loco());

 
 

-         var _entityIDs;
+           Object.keys(_nsi.data).forEach(function (tkv) {
+             var category = _nsi.data[tkv];
+             var parts = tkv.split('/', 3); // tkv = "tree/key/value"

 
 

-         var _currentPresets;
+             var t = parts[0];
+             var k = parts[1];
+             var v = parts[2]; // Build a reverse index of keys -> values -> trees present in the name-suggestion-index
+             // Collect primary keys  (e.g. "amenity", "craft", "shop", "man_made", "route", etc)
+             // "amenity": {
+             //   "restaurant": "brands"
+             // }

 
 

-         var _autofocus = false;
+             var vmap = _nsi.kvt.get(k);

 
 

-         function presetList(selection) {
-           if (!_entityIDs) return;
-           var presets = _mainPresetIndex.matchAllGeometry(entityGeometries());
-           selection.html('');
-           var messagewrap = selection.append('div').attr('class', 'header fillL');
-           var message = messagewrap.append('h3').html(_t.html('inspector.choose'));
-           messagewrap.append('button').attr('class', 'preset-choose').on('click', function () {
-             dispatch$1.call('cancel', this);
-           }).call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward'));
+             if (!vmap) {
+               vmap = new Map();

 
 

-           function initialKeydown(d3_event) {
-             // hack to let delete shortcut work when search is autofocused
-             if (search.property('value').length === 0 && (d3_event.keyCode === utilKeybinding.keyCodes['⌫'] || d3_event.keyCode === utilKeybinding.keyCodes['⌦'])) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               operationDelete(context, _entityIDs)(); // hack to let undo work when search is autofocused
-             } else if (search.property('value').length === 0 && (d3_event.ctrlKey || d3_event.metaKey) && d3_event.keyCode === utilKeybinding.keyCodes.z) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               context.undo();
-             } else if (!d3_event.ctrlKey && !d3_event.metaKey) {
-               // don't check for delete/undo hack on future keydown events
-               select(this).on('keydown', keydown);
-               keydown.call(this, d3_event);
+               _nsi.kvt.set(k, vmap);

              }
              }

-           }

 
 

-           function keydown(d3_event) {
-             // down arrow
-             if (d3_event.keyCode === utilKeybinding.keyCodes['↓'] && // if insertion point is at the end of the string
-             search.node().selectionStart === search.property('value').length) {
-               d3_event.preventDefault();
-               d3_event.stopPropagation(); // move focus to the first item in the preset list
+             vmap.set(v, t);
+             var tree = _nsi.trees[t]; // e.g. "brands", "operators"

 
 

-               var buttons = list.selectAll('.preset-list-button');
-               if (!buttons.empty()) buttons.nodes()[0].focus();
-             }
-           }
+             var mainTag = tree.mainTag; // e.g. "brand:wikidata", "operator:wikidata", etc

 
 

-           function keypress(d3_event) {
-             // enter
-             var value = search.property('value');
+             var items = category.items || [];
+             items.forEach(function (item) {
+               // Remember some useful things for later, cache NSI id -> item
+               item.tkv = tkv;
+               item.mainTag = mainTag;

 
 

-             if (d3_event.keyCode === 13 && // ↩ Return
-             value.length) {
-               list.selectAll('.preset-list-item:first-child').each(function (d) {
-                 d.choose.call(this);
-               });
-             }
-           }
+               _nsi.ids.set(item.id, item); // Cache Wikidata/Wikipedia values -> qid, for #6416

 
 

-           function inputevent() {
-             var value = search.property('value');
-             list.classed('filtered', value.length);
-             var extent = combinedEntityExtent();
-             var results, messageText;

 
 

-             if (value.length && extent) {
-               var center = extent.center();
-               var countryCode = iso1A2Code(center);
-               results = presets.search(value, entityGeometries()[0], countryCode && countryCode.toLowerCase());
-               messageText = _t('inspector.results', {
-                 n: results.collection.length,
-                 search: value
-               });
-             } else {
-               results = _mainPresetIndex.defaults(entityGeometries()[0], 36, !context.inIntro());
-               messageText = _t('inspector.choose');
-             }
+               var wd = item.tags[mainTag];
+               var wp = item.tags[mainTag.replace('wikidata', 'wikipedia')];
+               if (wd) _nsi.qids.set(wd, wd);
+               if (wp && wd) _nsi.qids.set(wp, wd);
+             });
+           });
+         });
+       } // `gatherKVs()`
+       // Gather all the k/v pairs that we will run through the NSI matcher.
+       // An OSM tags object can contain anything, but only a few tags will be interesting to NSI.
+       //
+       // This function will return the interesting tag pairs like:
+       //   "amenity/restaurant", "man_made/flagpole"
+       // and fallbacks like
+       //   "amenity/yes"
+       // excluding things like
+       //   "tiger:reviewed", "surface", "ref", etc.
+       //
+       // Arguments
+       //   `tags`: `Object` containing the feature's OSM tags
+       // Returns
+       //   `Object` containing kv pairs to test:
+       //   {
+       //     'primary': Set(),
+       //     'alternate': Set()
+       //   }
+       //

 
 

-             list.call(drawList, results);
-             message.html(messageText);
-           }

 
 

-           var searchWrap = selection.append('div').attr('class', 'search-header');
-           searchWrap.call(svgIcon('#iD-icon-search', 'pre-text'));
-           var search = searchWrap.append('input').attr('class', 'preset-search-input').attr('placeholder', _t('inspector.search')).attr('type', 'search').call(utilNoAuto).on('keydown', initialKeydown).on('keypress', keypress).on('input', inputevent);
+       function gatherKVs(tags) {
+         var primary = new Set();
+         var alternate = new Set();
+         Object.keys(tags).forEach(function (osmkey) {
+           var osmvalue = tags[osmkey];
+           if (!osmvalue) return; // Match a 'route_master' as if it were a 'route' - name-suggestion-index#5184

 
 

-           if (_autofocus) {
-             search.node().focus(); // Safari 14 doesn't always like to focus immediately,
-             // so try again on the next pass
+           if (osmkey === 'route_master') osmkey = 'route';

 
 

-             setTimeout(function () {
-               search.node().focus();
-             }, 0);
+           var vmap = _nsi.kvt.get(osmkey);
+
+           if (!vmap) return; // not an interesting key
+
+           if (vmap.get(osmvalue)) {
+             // Matched a category in NSI
+             primary.add("".concat(osmkey, "/").concat(osmvalue)); // interesting key/value
+           } else if (osmvalue === 'yes') {
+             alternate.add("".concat(osmkey, "/").concat(osmvalue)); // fallback key/yes

            }
            }

+         }); // Can we try a generic building fallback match? - See #6122, #7197
+         // Only try this if we do a preset match and find nothing else remarkable about that building.
+         // For example, a way with `building=yes` + `name=Westfield` may be a Westfield department store.
+         // But a way with `building=yes` + `name=Westfield` + `public_transport=station` is a train station for a town named "Westfield"

 
 

-           var listWrap = selection.append('div').attr('class', 'inspector-body');
-           var list = listWrap.append('div').attr('class', 'preset-list').call(drawList, _mainPresetIndex.defaults(entityGeometries()[0], 36, !context.inIntro()));
-           context.features().on('change.preset-list', updateForFeatureHiddenState);
+         var preset = _mainPresetIndex.matchTags(tags, 'area');
+
+         if (buildingPreset[preset.id]) {
+           alternate.add('building/yes');

          }
 
          }
 

-         function drawList(list, presets) {
-           presets = presets.matchAllGeometry(entityGeometries());
-           var collection = presets.collection.reduce(function (collection, preset) {
-             if (!preset) return collection;
+         return {
+           primary: primary,
+           alternate: alternate
+         };
+       } // `identifyTree()`
+       // NSI has a concept of trees: "brands", "operators", "flags", "transit".
+       // The tree determines things like which tags are namelike, and which tags hold important wikidata.
+       // This takes an Object of tags and tries to identify what tree to use.
+       //
+       // Arguments
+       //   `tags`: `Object` containing the feature's OSM tags
+       // Returns
+       //   `string` the name of the tree if known
+       //   or 'unknown' if it could match several trees (e.g. amenity/yes)
+       //   or null if no match
+       //

 
 

-             if (preset.members) {
-               if (preset.members.collection.filter(function (preset) {
-                 return preset.addable();
-               }).length > 1) {
-                 collection.push(CategoryItem(preset));
-               }
-             } else if (preset.addable()) {
-               collection.push(PresetItem(preset));
-             }

 
 

-             return collection;
-           }, []);
-           var items = list.selectAll('.preset-list-item').data(collection, function (d) {
-             return d.preset.id;
-           });
-           items.order();
-           items.exit().remove();
-           items.enter().append('div').attr('class', function (item) {
-             return 'preset-list-item preset-' + item.preset.id.replace('/', '-');
-           }).classed('current', function (item) {
-             return _currentPresets.indexOf(item.preset) !== -1;
-           }).each(function (item) {
-             select(this).call(item);
-           }).style('opacity', 0).transition().style('opacity', 1);
-           updateForFeatureHiddenState();
-         }
+       function identifyTree(tags) {
+         var unknown;
+         var t; // Check all tags

 
 

-         function itemKeydown(d3_event) {
-           // the actively focused item
-           var item = select(this.closest('.preset-list-item'));
-           var parentItem = select(item.node().parentNode.closest('.preset-list-item')); // arrow down, move focus to the next, lower item
+         Object.keys(tags).forEach(function (osmkey) {
+           if (t) return; // found already

 
 

-           if (d3_event.keyCode === utilKeybinding.keyCodes['↓']) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation(); // the next item in the list at the same level
+           var osmvalue = tags[osmkey];
+           if (!osmvalue) return; // Match a 'route_master' as if it were a 'route' - name-suggestion-index#5184

 
 

-             var nextItem = select(item.node().nextElementSibling); // if there is no next item in this list
+           if (osmkey === 'route_master') osmkey = 'route';

 
 

-             if (nextItem.empty()) {
-               // if there is a parent item
-               if (!parentItem.empty()) {
-                 // the item is the last item of a sublist,
-                 // select the next item at the parent level
-                 nextItem = select(parentItem.node().nextElementSibling);
-               } // if the focused item is expanded
+           var vmap = _nsi.kvt.get(osmkey);

 
 

-             } else if (select(this).classed('expanded')) {
-               // select the first subitem instead
-               nextItem = item.select('.subgrid .preset-list-item:first-child');
-             }
+           if (!vmap) return; // this key is not in nsi

 
 

-             if (!nextItem.empty()) {
-               // focus on the next item
-               nextItem.select('.preset-list-button').node().focus();
-             } // arrow up, move focus to the previous, higher item
+           if (osmvalue === 'yes') {
+             unknown = 'unknown';
+           } else {
+             t = vmap.get(osmvalue);
+           }
+         });
+         return t || unknown || null;
+       } // `gatherNames()`
+       // Gather all the namelike values that we will run through the NSI matcher.
+       // It will gather values primarily from tags `name`, `name:ru`, `flag:name`
+       //  and fallback to alternate tags like `brand`, `brand:ru`, `alt_name`
+       //
+       // Arguments
+       //   `tags`: `Object` containing the feature's OSM tags
+       // Returns
+       //   `Object` containing namelike values to test:
+       //   {
+       //     'primary': Set(),
+       //     'fallbacks': Set()
+       //   }
+       //

 
 

-           } else if (d3_event.keyCode === utilKeybinding.keyCodes['↑']) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation(); // the previous item in the list at the same level

 
 

-             var previousItem = select(item.node().previousElementSibling); // if there is no previous item in this list
+       function gatherNames(tags) {
+         var empty = {
+           primary: new Set(),
+           alternate: new Set()
+         };
+         var primary = new Set();
+         var alternate = new Set();
+         var foundSemi = false;
+         var testNameFragments = false;
+         var patterns; // Patterns for matching OSM keys that might contain namelike values.
+         // These roughly correspond to the "trees" concept in name-suggestion-index,

 
 

-             if (previousItem.empty()) {
-               // if there is a parent item
-               if (!parentItem.empty()) {
-                 // the item is the first subitem of a sublist select the parent item
-                 previousItem = parentItem;
-               } // if the previous item is expanded
+         var t = identifyTree(tags);
+         if (!t) return empty;

 
 

-             } else if (previousItem.select('.preset-list-button').classed('expanded')) {
-               // select the last subitem of the sublist of the previous item
-               previousItem = previousItem.select('.subgrid .preset-list-item:last-child');
-             }
+         if (t === 'transit') {
+           patterns = {
+             primary: /^network$/i,
+             alternate: /^(operator|operator:\w+|network:\w+|\w+_name|\w+_name:\w+)$/i
+           };
+         } else if (t === 'flags') {
+           patterns = {
+             primary: /^(flag:name|flag:name:\w+)$/i,
+             alternate: /^(flag|flag:\w+|subject|subject:\w+)$/i // note: no `country`, we special-case it below

 
 

-             if (!previousItem.empty()) {
-               // focus on the previous item
-               previousItem.select('.preset-list-button').node().focus();
-             } else {
-               // the focus is at the top of the list, move focus back to the search field
-               var search = select(this.closest('.preset-list-pane')).select('.preset-search-input');
-               search.node().focus();
-             } // arrow left, move focus to the parent item if there is one
+           };
+         } else if (t === 'brands') {
+           testNameFragments = true;
+           patterns = {
+             primary: /^(name|name:\w+)$/i,
+             alternate: /^(brand|brand:\w+|operator|operator:\w+|\w+_name|\w+_name:\w+)/i
+           };
+         } else if (t === 'operators') {
+           testNameFragments = true;
+           patterns = {
+             primary: /^(name|name:\w+|operator|operator:\w+)$/i,
+             alternate: /^(brand|brand:\w+|\w+_name|\w+_name:\w+)/i
+           };
+         } else {
+           // unknown/multiple
+           testNameFragments = true;
+           patterns = {
+             primary: /^(name|name:\w+)$/i,
+             alternate: /^(brand|brand:\w+|network|network:\w+|operator|operator:\w+|\w+_name|\w+_name:\w+)/i
+           };
+         } // Test `name` fragments, longest to shortest, to fit them into a "Name Branch" pattern.
+         // e.g. "TUI ReiseCenter - Neuss Innenstadt" -> ["TUI", "ReiseCenter", "Neuss", "Innenstadt"]

 
 

-           } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '→' : '←']) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation(); // if there is a parent item, focus on the parent item

 
 

-             if (!parentItem.empty()) {
-               parentItem.select('.preset-list-button').node().focus();
-             } // arrow right, choose this item
+         if (tags.name && testNameFragments) {
+           var nameParts = tags.name.split(/[\s\-\/,.]/);

 
 

-           } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '←' : '→']) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
-             item.datum().choose.call(select(this).node());
+           for (var split = nameParts.length; split > 0; split--) {
+             var name = nameParts.slice(0, split).join(' '); // e.g. "TUI ReiseCenter"
+
+             primary.add(name);

            }
            }

-         }
+         } // Check all tags

 
 

-         function CategoryItem(preset) {
-           var box,
-               sublist,
-               shown = false;

 
 

-           function item(selection) {
-             var wrap = selection.append('div').attr('class', 'preset-list-button-wrap category');
+         Object.keys(tags).forEach(function (osmkey) {
+           var osmvalue = tags[osmkey];
+           if (!osmvalue) return;

 
 

-             function click() {
-               var isExpanded = select(this).classed('expanded');
-               var iconName = isExpanded ? _mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward' : '#iD-icon-down';
-               select(this).classed('expanded', !isExpanded);
-               select(this).selectAll('div.label-inner svg.icon use').attr('href', iconName);
-               item.choose();
+           if (isNamelike(osmkey, 'primary')) {
+             if (/;/.test(osmvalue)) {
+               foundSemi = true;
+             } else {
+               primary.add(osmvalue);
+               alternate["delete"](osmvalue);

              }
              }

+           } else if (!primary.has(osmvalue) && isNamelike(osmkey, 'alternate')) {
+             if (/;/.test(osmvalue)) {
+               foundSemi = true;
+             } else {
+               alternate.add(osmvalue);
+             }
+           }
+         }); // For flags only, fallback to `country` tag only if no other namelike values were found.
+         // See https://github.com/openstreetmap/iD/pull/8305#issuecomment-769174070

 
 

-             var geometries = entityGeometries();
-             var button = wrap.append('button').attr('class', 'preset-list-button').classed('expanded', false).call(uiPresetIcon().geometry(geometries.length === 1 && geometries[0]).preset(preset)).on('click', click).on('keydown', function (d3_event) {
-               // right arrow, expand the focused item
-               if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '←' : '→']) {
-                 d3_event.preventDefault();
-                 d3_event.stopPropagation(); // if the item isn't expanded
-
-                 if (!select(this).classed('expanded')) {
-                   // toggle expansion (expand the item)
-                   click.call(this, d3_event);
-                 } // left arrow, collapse the focused item
-
-               } else if (d3_event.keyCode === utilKeybinding.keyCodes[_mainLocalizer.textDirection() === 'rtl' ? '→' : '←']) {
-                 d3_event.preventDefault();
-                 d3_event.stopPropagation(); // if the item is expanded
+         if (tags.man_made === 'flagpole' && !primary.size && !alternate.size && !!tags.country) {
+           var osmvalue = tags.country;

 
 

-                 if (select(this).classed('expanded')) {
-                   // toggle expansion (collapse the item)
-                   click.call(this, d3_event);
-                 }
-               } else {
-                 itemKeydown.call(this, d3_event);
-               }
-             });
-             var label = button.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
-             label.append('div').attr('class', 'namepart').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward', 'inline')).append('span').html(function () {
-               return preset.nameLabel() + '&hellip;';
-             });
-             box = selection.append('div').attr('class', 'subgrid').style('max-height', '0px').style('opacity', 0);
-             box.append('div').attr('class', 'arrow');
-             sublist = box.append('div').attr('class', 'preset-list fillL3');
+           if (/;/.test(osmvalue)) {
+             foundSemi = true;
+           } else {
+             alternate.add(osmvalue);

            }
            }

+         } // If any namelike value contained a semicolon, return empty set and don't try matching anything.

 
 

-           item.choose = function () {
-             if (!box || !sublist) return;

 
 

-             if (shown) {
-               shown = false;
-               box.transition().duration(200).style('opacity', '0').style('max-height', '0px').style('padding-bottom', '0px');
-             } else {
-               shown = true;
-               var members = preset.members.matchAllGeometry(entityGeometries());
-               sublist.call(drawList, members);
-               box.transition().duration(200).style('opacity', '1').style('max-height', 200 + members.collection.length * 190 + 'px').style('padding-bottom', '10px');
-             }
+         if (foundSemi) {
+           return empty;
+         } else {
+           return {
+             primary: primary,
+             alternate: alternate

            };
            };

+         }

 
 

-           item.preset = preset;
-           return item;
+         function isNamelike(osmkey, which) {
+           if (osmkey === 'old_name') return false;
+           return patterns[which].test(osmkey) && !notNames.test(osmkey);

          }
          }

+       } // `gatherTuples()`
+       // Generate all combinations of [key,value,name] that we want to test.
+       // This prioritizes them so that the primary name and k/v pairs go first
+       //
+       // Arguments
+       //   `tryKVs`: `Object` containing primary and alternate k/v pairs to test
+       //   `tryNames`: `Object` containing primary and alternate names to test
+       // Returns
+       //   `Array`: tuple objects ordered by priority
+       //

 
 

-         function PresetItem(preset) {
-           function item(selection) {
-             var wrap = selection.append('div').attr('class', 'preset-list-button-wrap');
-             var geometries = entityGeometries();
-             var button = wrap.append('button').attr('class', 'preset-list-button').call(uiPresetIcon().geometry(geometries.length === 1 && geometries[0]).preset(preset)).on('click', item.choose).on('keydown', itemKeydown);
-             var label = button.append('div').attr('class', 'label').append('div').attr('class', 'label-inner');
-             var nameparts = [preset.nameLabel(), preset.subtitleLabel()].filter(Boolean);
-             label.selectAll('.namepart').data(nameparts).enter().append('div').attr('class', 'namepart').html(function (d) {
-               return d;
+
+       function gatherTuples(tryKVs, tryNames) {
+         var tuples = [];
+         ['primary', 'alternate'].forEach(function (whichName) {
+           // test names longest to shortest
+           var arr = Array.from(tryNames[whichName]).sort(function (a, b) {
+             return b.length - a.length;
+           });
+           arr.forEach(function (n) {
+             ['primary', 'alternate'].forEach(function (whichKV) {
+               tryKVs[whichKV].forEach(function (kv) {
+                 var parts = kv.split('/', 2);
+                 var k = parts[0];
+                 var v = parts[1];
+                 tuples.push({
+                   k: k,
+                   v: v,
+                   n: n
+                 });
+               });

              });
              });

-             wrap.call(item.reference.button);
-             selection.call(item.reference.body);
-           }
+           });
+         });
+         return tuples;
+       } // `_upgradeTags()`
+       // Try to match a feature to a canonical record in name-suggestion-index
+       // and upgrade the tags to match.
+       //
+       // Arguments
+       //   `tags`: `Object` containing the feature's OSM tags
+       //   `loc`: Location where this feature exists, as a [lon, lat]
+       // Returns
+       //   `Object` containing the result, or `null` if no changes needed:
+       //   {
+       //     'newTags': `Object` - The tags the the feature should have
+       //     'matched': `Object` - The matched item
+       //   }
+       //

 
 

-           item.choose = function () {
-             if (select(this).classed('disabled')) return;

 
 

-             if (!context.inIntro()) {
-               _mainPresetIndex.setMostRecent(preset, entityGeometries()[0]);
-             }
+       function _upgradeTags(tags, loc) {
+         var newTags = Object.assign({}, tags); // shallow copy

 
 

-             context.perform(function (graph) {
-               for (var i in _entityIDs) {
-                 var entityID = _entityIDs[i];
-                 var oldPreset = _mainPresetIndex.match(graph.entity(entityID), graph);
-                 graph = actionChangePreset(entityID, oldPreset, preset)(graph);
+         var changed = false; // Before anything, perform trivial Wikipedia/Wikidata replacements
+
+         Object.keys(newTags).forEach(function (osmkey) {
+           var matchTag = osmkey.match(/^(\w+:)?wikidata$/);
+
+           if (matchTag) {
+             // Look at '*:wikidata' tags
+             var prefix = matchTag[1] || '';
+             var wd = newTags[osmkey];
+             var replace = _nsi.replacements[wd]; // If it matches a QID in the replacement list...
+
+             if (replace && replace.wikidata !== undefined) {
+               // replace or delete `*:wikidata` tag
+               changed = true;
+
+               if (replace.wikidata) {
+                 newTags[osmkey] = replace.wikidata;
+               } else {
+                 delete newTags[osmkey];

                }
                }

+             }

 
 

-               return graph;
-             }, _t('operations.change_tags.annotation'));
-             context.validator().validate(); // rerun validation
+             if (replace && replace.wikipedia !== undefined) {
+               // replace or delete `*:wikipedia` tag
+               changed = true;
+               var wpkey = "".concat(prefix, "wikipedia");

 
 

-             dispatch$1.call('choose', this, preset);
-           };
+               if (replace.wikipedia) {
+                 newTags[wpkey] = replace.wikipedia;
+               } else {
+                 delete newTags[wpkey];
+               }
+             }
+           }
+         }); // Match a 'route_master' as if it were a 'route' - name-suggestion-index#5184

 
 

-           item.help = function (d3_event) {
-             d3_event.stopPropagation();
-             item.reference.toggle();
-           };
+         var isRouteMaster = tags.type === 'route_master'; // Gather key/value tag pairs to try to match

 
 

-           item.preset = preset;
-           item.reference = uiTagReference(preset.reference());
-           return item;
-         }
+         var tryKVs = gatherKVs(tags);

 
 

-         function updateForFeatureHiddenState() {
-           if (!_entityIDs.every(context.hasEntity)) return;
-           var geometries = entityGeometries();
-           var button = context.container().selectAll('.preset-list .preset-list-button'); // remove existing tooltips
+         if (!tryKVs.primary.size && !tryKVs.alternate.size) {
+           return changed ? {
+             newTags: newTags,
+             matched: null
+           } : null;
+         } // Gather namelike tag values to try to match

 
 

-           button.call(uiTooltip().destroyAny);
-           button.each(function (item, index) {
-             var hiddenPresetFeaturesId;

 
 

-             for (var i in geometries) {
-               hiddenPresetFeaturesId = context.features().isHiddenPreset(item.preset, geometries[i]);
-               if (hiddenPresetFeaturesId) break;
-             }
+         var tryNames = gatherNames(tags); // Do `wikidata=*` or `wikipedia=*` tags identify this entity as a chain? - See #6416
+         // If so, these tags can be swapped to e.g. `brand:wikidata`/`brand:wikipedia`.

 
 

-             var isHiddenPreset = !context.inIntro() && !!hiddenPresetFeaturesId && (_currentPresets.length !== 1 || item.preset !== _currentPresets[0]);
-             select(this).classed('disabled', isHiddenPreset);
+         var foundQID = _nsi.qids.get(tags.wikidata) || _nsi.qids.get(tags.wikipedia);

 
 

-             if (isHiddenPreset) {
-               var isAutoHidden = context.features().autoHidden(hiddenPresetFeaturesId);
-               select(this).call(uiTooltip().title(_t.html('inspector.hidden_preset.' + (isAutoHidden ? 'zoom' : 'manual'), {
-                 features: _t.html('feature.' + hiddenPresetFeaturesId + '.description')
-               })).placement(index < 2 ? 'bottom' : 'top'));
-             }
-           });
-         }
+         if (foundQID) tryNames.primary.add(foundQID); // matcher will recognize the Wikidata QID as name too

 
 

-         presetList.autofocus = function (val) {
-           if (!arguments.length) return _autofocus;
-           _autofocus = val;
-           return presetList;
-         };
+         if (!tryNames.primary.size && !tryNames.alternate.size) {
+           return changed ? {
+             newTags: newTags,
+             matched: null
+           } : null;
+         } // Order the [key,value,name] tuples - test primary before alternate

 
 

-         presetList.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;

 
 

-           if (_entityIDs && _entityIDs.length) {
-             var presets = _entityIDs.map(function (entityID) {
-               return _mainPresetIndex.match(context.entity(entityID), context.graph());
-             });
+         var tuples = gatherTuples(tryKVs, tryNames);

 
 

-             presetList.presets(presets);
-           }
+         var _loop = function _loop(i) {
+           var tuple = tuples[i];

 
 

-           return presetList;
-         };
+           var hits = _nsi.matcher.match(tuple.k, tuple.v, tuple.n, loc); // Attempt to match an item in NSI

 
 

-         presetList.presets = function (val) {
-           if (!arguments.length) return _currentPresets;
-           _currentPresets = val;
-           return presetList;
-         };

 
 

-         function entityGeometries() {
-           var counts = {};
+           if (!hits || !hits.length) return "continue"; // no match, try next tuple

 
 

-           for (var i in _entityIDs) {
-             var entityID = _entityIDs[i];
-             var entity = context.entity(entityID);
-             var geometry = entity.geometry(context.graph()); // Treat entities on addr:interpolation lines as points, not vertices (#3241)
+           if (hits[0].match !== 'primary' && hits[0].match !== 'alternate') return "break"; // a generic match, stop looking
+           // A match may contain multiple results, the first one is likely the best one for this location
+           // e.g. `['pfk-a54c14', 'kfc-1ff19c', 'kfc-658eea']`

 
 

-             if (geometry === 'vertex' && entity.isOnAddressLine(context.graph())) {
-               geometry = 'point';
-             }
+           var itemID = void 0,
+               item = void 0;

 
 

-             if (!counts[geometry]) counts[geometry] = 0;
-             counts[geometry] += 1;
-           }
+           for (var j = 0; j < hits.length; j++) {
+             var hit = hits[j];
+             itemID = hit.itemID;
+             if (_nsi.dissolved[itemID]) continue; // Don't upgrade to a dissolved item

 
 

-           return Object.keys(counts).sort(function (geom1, geom2) {
-             return counts[geom2] - counts[geom1];
-           });
-         }
+             item = _nsi.ids.get(itemID);
+             if (!item) continue;
+             var mainTag = item.mainTag; // e.g. `brand:wikidata`

 
 

-         function combinedEntityExtent() {
-           return _entityIDs.reduce(function (extent, entityID) {
-             var entity = context.graph().entity(entityID);
-             return extent.extend(entity.extent(context.graph()));
-           }, geoExtent());
-         }
+             var itemQID = item.tags[mainTag]; // e.g. `brand:wikidata` qid

 
 

-         return utilRebind(presetList, dispatch$1, 'on');
-       }
+             var notQID = newTags["not:".concat(mainTag)]; // e.g. `not:brand:wikidata` qid

 
 

-       function uiInspector(context) {
-         var presetList = uiPresetList(context);
-         var entityEditor = uiEntityEditor(context);
-         var wrap = select(null),
-             presetPane = select(null),
-             editorPane = select(null);
-         var _state = 'select';
+             if ( // Exceptions, skip this hit
+             !itemQID || itemQID === notQID || // No `*:wikidata` or matched a `not:*:wikidata`
+             newTags.office && !item.tags.office // feature may be a corporate office for a brand? - #6416
+             ) {
+                 item = null;
+                 continue; // continue looking
+               } else {
+                 break; // use `item`
+               }
+           } // Can't use any of these hits, try next tuple..

 
 

-         var _entityIDs;

 
 

-         var _newFeature = false;
+           if (!item) return "continue"; // At this point we have matched a canonical item and can suggest tag upgrades..

 
 

-         function inspector(selection) {
-           presetList.entityIDs(_entityIDs).autofocus(_newFeature).on('choose', inspector.setPreset).on('cancel', function () {
-             inspector.setPreset();
+           item = JSON.parse(JSON.stringify(item)); // deep copy
+
+           var tkv = item.tkv;
+           var parts = tkv.split('/', 3); // tkv = "tree/key/value"
+
+           var k = parts[1];
+           var v = parts[2];
+           var category = _nsi.data[tkv];
+           var properties = category.properties || {}; // Preserve some tags that we specifically don't want NSI to overwrite. ('^name', sometimes)
+
+           var preserveTags = item.preserveTags || properties.preserveTags || []; // These tags can be toplevel tags -or- attributes - so we generally want to preserve existing values - #8615
+           // We'll only _replace_ the tag value if this tag is the toplevel/defining tag for the matched item (`k`)
+
+           ['building', 'emergency', 'internet_access', 'takeaway'].forEach(function (osmkey) {
+             if (k !== osmkey) preserveTags.push("^".concat(osmkey, "$"));

            });
            });

-           entityEditor.state(_state).entityIDs(_entityIDs).on('choose', inspector.showList);
-           wrap = selection.selectAll('.panewrap').data([0]);
-           var enter = wrap.enter().append('div').attr('class', 'panewrap');
-           enter.append('div').attr('class', 'preset-list-pane pane');
-           enter.append('div').attr('class', 'entity-editor-pane pane');
-           wrap = wrap.merge(enter);
-           presetPane = wrap.selectAll('.preset-list-pane');
-           editorPane = wrap.selectAll('.entity-editor-pane');
+           var regexes = preserveTags.map(function (s) {
+             return new RegExp(s, 'i');
+           });
+           var keepTags = {};
+           Object.keys(newTags).forEach(function (osmkey) {
+             if (regexes.some(function (regex) {
+               return regex.test(osmkey);
+             })) {
+               keepTags[osmkey] = newTags[osmkey];
+             }
+           }); // Remove any primary tags ("amenity", "craft", "shop", "man_made", "route", etc) that have a
+           // value like `amenity=yes` or `shop=yes` (exceptions have already been added to `keepTags` above)

 
 

-           function shouldDefaultToPresetList() {
-             // always show the inspector on hover
-             if (_state !== 'select') return false; // can only change preset on single selection
+           _nsi.kvt.forEach(function (vmap, k) {
+             if (newTags[k] === 'yes') delete newTags[k];
+           }); // Replace mistagged `wikidata`/`wikipedia` with e.g. `brand:wikidata`/`brand:wikipedia`

 
 

-             if (_entityIDs.length !== 1) return false;
-             var entityID = _entityIDs[0];
-             var entity = context.hasEntity(entityID);
-             if (!entity) return false; // default to inspector if there are already tags

 
 

-             if (entity.hasNonGeometryTags()) return false; // prompt to select preset if feature is new and untagged
+           if (foundQID) {
+             delete newTags.wikipedia;
+             delete newTags.wikidata;
+           } // Do the tag upgrade

 
 

-             if (_newFeature) return true; // all existing features except vertices should default to inspector

 
 

-             if (entity.geometry(context.graph()) !== 'vertex') return false; // show vertex relations if any
+           Object.assign(newTags, item.tags, keepTags); // Swap `route` back to `route_master` - name-suggestion-index#5184

 
 

-             if (context.graph().parentRelations(entity).length) return false; // show vertex issues if there are any
+           if (isRouteMaster) {
+             newTags.route_master = newTags.route;
+             delete newTags.route;
+           } // Special `branch` splitting rules - IF..
+           // - NSI is suggesting to replace `name`, AND
+           // - `branch` doesn't already contain something, AND
+           // - original name has not moved to an alternate name (e.g. "Dunkin' Donuts" -> "Dunkin'"), AND
+           // - original name is "some name" + "some stuff", THEN
+           // consider splitting `name` into `name`/`branch`..

 
 

-             if (context.validator().getEntityIssues(entityID).length) return false; // show turn retriction editor for junction vertices

 
 

-             if (entity.isHighwayIntersection(context.graph())) return false; // otherwise show preset list for uninteresting vertices
+           var origName = tags.name;
+           var newName = newTags.name;

 
 

-             return true;
-           }
+           if (newName && origName && newName !== origName && !newTags.branch) {
+             var newNames = gatherNames(newTags);
+             var newSet = new Set([].concat(_toConsumableArray(newNames.primary), _toConsumableArray(newNames.alternate)));
+             var isMoved = newSet.has(origName); // another tag holds the original name now

 
 

-           if (shouldDefaultToPresetList()) {
-             wrap.style('right', '-100%');
-             editorPane.classed('hide', true);
-             presetPane.classed('hide', false).call(presetList);
-           } else {
-             wrap.style('right', '0%');
-             presetPane.classed('hide', true);
-             editorPane.classed('hide', false).call(entityEditor);
-           }
+             if (!isMoved) {
+               // Test name fragments, longest to shortest, to fit them into a "Name Branch" pattern.
+               // e.g. "TUI ReiseCenter - Neuss Innenstadt" -> ["TUI", "ReiseCenter", "Neuss", "Innenstadt"]
+               var nameParts = origName.split(/[\s\-\/,.]/);

 
 

-           var footer = selection.selectAll('.footer').data([0]);
-           footer = footer.enter().append('div').attr('class', 'footer').merge(footer);
-           footer.call(uiViewOnOSM(context).what(context.hasEntity(_entityIDs.length === 1 && _entityIDs[0])));
-         }
+               for (var split = nameParts.length; split > 0; split--) {
+                 var name = nameParts.slice(0, split).join(' '); // e.g. "TUI ReiseCenter"

 
 

-         inspector.showList = function (presets) {
-           presetPane.classed('hide', false);
-           wrap.transition().styleTween('right', function () {
-             return interpolate('0%', '-100%');
-           }).on('end', function () {
-             editorPane.classed('hide', true);
-           });
+                 var branch = nameParts.slice(split).join(' '); // e.g. "Neuss Innenstadt"

 
 

-           if (presets) {
-             presetList.presets(presets);
-           }
+                 var nameHits = _nsi.matcher.match(k, v, name, loc);

 
 

-           presetPane.call(presetList.autofocus(true));
-         };
+                 if (!nameHits || !nameHits.length) continue; // no match, try next name fragment

 
 

-         inspector.setPreset = function (preset) {
-           // upon setting multipolygon, go to the area preset list instead of the editor
-           if (preset && preset.id === 'type/multipolygon') {
-             presetPane.call(presetList.autofocus(true));
-           } else {
-             editorPane.classed('hide', false);
-             wrap.transition().styleTween('right', function () {
-               return interpolate('-100%', '0%');
-             }).on('end', function () {
-               presetPane.classed('hide', true);
-             });
+                 if (nameHits.some(function (hit) {
+                   return hit.itemID === itemID;
+                 })) {
+                   // matched the name fragment to the same itemID above
+                   if (branch) {
+                     if (notBranches.test(branch)) {
+                       // "branch" was detected but is noise ("factory outlet", etc)
+                       newTags.name = origName; // Leave `name` alone, this part of the name may be significant..
+                     } else {
+                       var branchHits = _nsi.matcher.match(k, v, branch, loc);
+
+                       if (branchHits && branchHits.length) {
+                         // if "branch" matched something else in NSI..
+                         if (branchHits[0].match === 'primary' || branchHits[0].match === 'alternate') {
+                           // if another brand! (e.g. "KFC - Taco Bell"?)
+                           return {
+                             v: null
+                           }; //   bail out - can't suggest tags in this case
+                         } // else a generic (e.g. "gas", "cafe") - ignore
+
+                       } else {
+                         // "branch" is not noise and not something in NSI
+                         newTags.branch = branch; // Stick it in the `branch` tag..
+                       }
+                     }
+                   }

 
 

-             if (preset) {
-               entityEditor.presets([preset]);
+                   break;
+                 }
+               }

              }
              }

-
-             editorPane.call(entityEditor);

            }
            }

+
+           return {
+             v: {
+               newTags: newTags,
+               matched: item
+             }
+           };

          };
 
          };
 

-         inspector.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           entityEditor.state(_state); // remove any old field help overlay that might have gotten attached to the inspector
+         for (var i = 0; i < tuples.length; i++) {
+           var _ret = _loop(i);

 
 

-           context.container().selectAll('.field-help-body').remove();
-           return inspector;
-         };
+           if (_ret === "continue") continue;
+           if (_ret === "break") break;
+           if (_typeof(_ret) === "object") return _ret.v;
+         }

 
 

-         inspector.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return inspector;
-         };
+         return changed ? {
+           newTags: newTags,
+           matched: null
+         } : null;
+       } // `_isGenericName()`
+       // Is the `name` tag generic?
+       //
+       // Arguments
+       //   `tags`: `Object` containing the feature's OSM tags
+       // Returns
+       //   `true` if it is generic, `false` if not
+       //

 
 

-         inspector.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return inspector;
-         };

 
 

-         return inspector;
-       }
+       function _isGenericName(tags) {
+         var n = tags.name;
+         if (!n) return false; // tryNames just contains the `name` tag value and nothing else

 
 

-       function uiSidebar(context) {
-         var inspector = uiInspector(context);
-         var dataEditor = uiDataEditor(context);
-         var noteEditor = uiNoteEditor(context);
-         var improveOsmEditor = uiImproveOsmEditor(context);
-         var keepRightEditor = uiKeepRightEditor(context);
-         var osmoseEditor = uiOsmoseEditor(context);
+         var tryNames = {
+           primary: new Set([n]),
+           alternate: new Set()
+         }; // Gather key/value tag pairs to try to match

 
 

-         var _current;
+         var tryKVs = gatherKVs(tags);
+         if (!tryKVs.primary.size && !tryKVs.alternate.size) return false; // Order the [key,value,name] tuples - test primary before alternate

 
 

-         var _wasData = false;
-         var _wasNote = false;
-         var _wasQaItem = false; // use pointer events on supported platforms; fallback to mouse events
+         var tuples = gatherTuples(tryKVs, tryNames);

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+         for (var i = 0; i < tuples.length; i++) {
+           var tuple = tuples[i];

 
 

-         function sidebar(selection) {
-           var container = context.container();
-           var minWidth = 240;
-           var sidebarWidth;
-           var containerWidth;
-           var dragOffset; // Set the initial width constraints
+           var hits = _nsi.matcher.match(tuple.k, tuple.v, tuple.n); // Attempt to match an item in NSI
+           // If we get a `excludeGeneric` hit, this is a generic name.

 
 

-           selection.style('min-width', minWidth + 'px').style('max-width', '400px').style('width', '33.3333%');
-           var resizer = selection.append('div').attr('class', 'sidebar-resizer').on(_pointerPrefix + 'down.sidebar-resizer', pointerdown);
-           var downPointerId, lastClientX, containerLocGetter;

 
 

-           function pointerdown(d3_event) {
-             if (downPointerId) return;
-             if ('button' in d3_event && d3_event.button !== 0) return;
-             downPointerId = d3_event.pointerId || 'mouse';
-             lastClientX = d3_event.clientX;
-             containerLocGetter = utilFastMouse(container.node()); // offset from edge of sidebar-resizer
+           if (hits && hits.length && hits[0].match === 'excludeGeneric') return true;
+         }

 
 

-             dragOffset = utilFastMouse(resizer.node())(d3_event)[0] - 1;
-             sidebarWidth = selection.node().getBoundingClientRect().width;
-             containerWidth = container.node().getBoundingClientRect().width;
-             var widthPct = sidebarWidth / containerWidth * 100;
-             selection.style('width', widthPct + '%') // lock in current width
-             .style('max-width', '85%'); // but allow larger widths
+         return false;
+       } // PUBLIC INTERFACE

 
 

-             resizer.classed('dragging', true);
-             select(window).on('touchmove.sidebar-resizer', function (d3_event) {
-               // disable page scrolling while resizing on touch input
-               d3_event.preventDefault();
-             }, {
-               passive: false
-             }).on(_pointerPrefix + 'move.sidebar-resizer', pointermove).on(_pointerPrefix + 'up.sidebar-resizer pointercancel.sidebar-resizer', pointerup);
+
+       var serviceNsi = {
+         // `init()`
+         // On init, start preparing the name-suggestion-index
+         //
+         init: function init() {
+           // Note: service.init is called immediately after the presetManager has started loading its data.
+           // We expect to chain onto an unfulfilled promise here.
+           setNsiSources();
+           _mainPresetIndex.ensureLoaded().then(function () {
+             return loadNsiPresets();
+           }).then(function () {
+             return delay(100);
+           }) // wait briefly for locationSets to enter the locationManager queue
+           .then(function () {
+             return _mainLocations.mergeLocationSets([]);
+           }) // wait for locationSets to resolve
+           .then(function () {
+             return loadNsiData();
+           }).then(function () {
+             return _nsiStatus = 'ok';
+           })["catch"](function () {
+             return _nsiStatus = 'failed';
+           });
+
+           function delay(msec) {
+             return new Promise(function (resolve) {
+               window.setTimeout(resolve, msec);
+             });

            }
            }

+         },
+         // `reset()`
+         // Reset is called when user saves data to OSM (does nothing here)
+         //
+         reset: function reset() {},
+         // `status()`
+         // To let other code know how it's going...
+         //
+         // Returns
+         //   `String`: 'loading', 'ok', 'failed'
+         //
+         status: function status() {
+           return _nsiStatus;
+         },
+         // `isGenericName()`
+         // Is the `name` tag generic?
+         //
+         // Arguments
+         //   `tags`: `Object` containing the feature's OSM tags
+         // Returns
+         //   `true` if it is generic, `false` if not
+         //
+         isGenericName: function isGenericName(tags) {
+           return _isGenericName(tags);
+         },
+         // `upgradeTags()`
+         // Suggest tag upgrades.
+         // This function will not modify the input tags, it makes a copy.
+         //
+         // Arguments
+         //   `tags`: `Object` containing the feature's OSM tags
+         //   `loc`: Location where this feature exists, as a [lon, lat]
+         // Returns
+         //   `Object` containing the result, or `null` if no changes needed:
+         //   {
+         //     'newTags': `Object` - The tags the the feature should have
+         //     'matched': `Object` - The matched item
+         //   }
+         //
+         upgradeTags: function upgradeTags(tags, loc) {
+           return _upgradeTags(tags, loc);
+         },
+         // `cache()`
+         // Direct access to the NSI cache, useful for testing or breaking things
+         //
+         // Returns
+         //   `Object`: the internal NSI cache
+         //
+         cache: function cache() {
+           return _nsi;
+         }
+       };

 
 

-           function pointermove(d3_event) {
-             if (downPointerId !== (d3_event.pointerId || 'mouse')) return;
-             d3_event.preventDefault();
-             var dx = d3_event.clientX - lastClientX;
-             lastClientX = d3_event.clientX;
-             var isRTL = _mainLocalizer.textDirection() === 'rtl';
-             var scaleX = isRTL ? 0 : 1;
-             var xMarginProperty = isRTL ? 'margin-right' : 'margin-left';
-             var x = containerLocGetter(d3_event)[0] - dragOffset;
-             sidebarWidth = isRTL ? containerWidth - x : x;
-             var isCollapsed = selection.classed('collapsed');
-             var shouldCollapse = sidebarWidth < minWidth;
-             selection.classed('collapsed', shouldCollapse);
+       var apibase$1 = 'https://openstreetcam.org';
+       var maxResults$1 = 1000;
+       var tileZoom$1 = 14;
+       var tiler$3 = utilTiler().zoomExtent([tileZoom$1, tileZoom$1]).skipNullIsland(true);
+       var dispatch$3 = dispatch$8('loadedImages');
+       var imgZoom = d3_zoom().extent([[0, 0], [320, 240]]).translateExtent([[0, 0], [320, 240]]).scaleExtent([1, 15]);

 
 

-             if (shouldCollapse) {
-               if (!isCollapsed) {
-                 selection.style(xMarginProperty, '-400px').style('width', '400px');
-                 context.ui().onResize([(sidebarWidth - dx) * scaleX, 0]);
-               }
-             } else {
-               var widthPct = sidebarWidth / containerWidth * 100;
-               selection.style(xMarginProperty, null).style('width', widthPct + '%');
+       var _oscCache;

 
 

-               if (isCollapsed) {
-                 context.ui().onResize([-sidebarWidth * scaleX, 0]);
-               } else {
-                 context.ui().onResize([-dx * scaleX, 0]);
-               }
-             }
+       var _oscSelectedImage;
+
+       var _loadViewerPromise$1;
+
+       function abortRequest$3(controller) {
+         controller.abort();
+       }
+
+       function maxPageAtZoom(z) {
+         if (z < 15) return 2;
+         if (z === 15) return 5;
+         if (z === 16) return 10;
+         if (z === 17) return 20;
+         if (z === 18) return 40;
+         if (z > 18) return 80;
+       }
+
+       function loadTiles$1(which, url, projection) {
+         var currZoom = Math.floor(geoScaleToZoom(projection.scale()));
+         var tiles = tiler$3.getTiles(projection); // abort inflight requests that are no longer needed
+
+         var cache = _oscCache[which];
+         Object.keys(cache.inflight).forEach(function (k) {
+           var wanted = tiles.find(function (tile) {
+             return k.indexOf(tile.id + ',') === 0;
+           });
+
+           if (!wanted) {
+             abortRequest$3(cache.inflight[k]);
+             delete cache.inflight[k];

            }
            }

+         });
+         tiles.forEach(function (tile) {
+           loadNextTilePage$1(which, currZoom, url, tile);
+         });
+       }

 
 

-           function pointerup(d3_event) {
-             if (downPointerId !== (d3_event.pointerId || 'mouse')) return;
-             downPointerId = null;
-             resizer.classed('dragging', false);
-             select(window).on('touchmove.sidebar-resizer', null).on(_pointerPrefix + 'move.sidebar-resizer', null).on(_pointerPrefix + 'up.sidebar-resizer pointercancel.sidebar-resizer', null);
+       function loadNextTilePage$1(which, currZoom, url, tile) {
+         var cache = _oscCache[which];
+         var bbox = tile.extent.bbox();
+         var maxPages = maxPageAtZoom(currZoom);
+         var nextPage = cache.nextPage[tile.id] || 1;
+         var params = utilQsString({
+           ipp: maxResults$1,
+           page: nextPage,
+           // client_id: clientId,
+           bbTopLeft: [bbox.maxY, bbox.minX].join(','),
+           bbBottomRight: [bbox.minY, bbox.maxX].join(',')
+         }, true);
+         if (nextPage > maxPages) return;
+         var id = tile.id + ',' + String(nextPage);
+         if (cache.loaded[id] || cache.inflight[id]) return;
+         var controller = new AbortController();
+         cache.inflight[id] = controller;
+         var options = {
+           method: 'POST',
+           signal: controller.signal,
+           body: params,
+           headers: {
+             'Content-Type': 'application/x-www-form-urlencoded'

            }
            }

+         };
+         d3_json(url, options).then(function (data) {
+           cache.loaded[id] = true;
+           delete cache.inflight[id];

 
 

-           var featureListWrap = selection.append('div').attr('class', 'feature-list-pane').call(uiFeatureList(context));
-           var inspectorWrap = selection.append('div').attr('class', 'inspector-hidden inspector-wrap');
+           if (!data || !data.currentPageItems || !data.currentPageItems.length) {
+             throw new Error('No Data');
+           }

 
 

-           var hoverModeSelect = function hoverModeSelect(targets) {
-             context.container().selectAll('.feature-list-item').classed('hover', false);
+           var features = data.currentPageItems.map(function (item) {
+             var loc = [+item.lng, +item.lat];
+             var d;

 
 

-             if (context.selectedIDs().length > 1 && targets && targets.length) {
-               var elements = context.container().selectAll('.feature-list-item').filter(function (node) {
-                 return targets.indexOf(node) !== -1;
-               });
+             if (which === 'images') {
+               d = {
+                 loc: loc,
+                 key: item.id,
+                 ca: +item.heading,
+                 captured_at: item.shot_date || item.date_added,
+                 captured_by: item.username,
+                 imagePath: item.lth_name,
+                 sequence_id: item.sequence_id,
+                 sequence_index: +item.sequence_index
+               }; // cache sequence info

 
 

-               if (!elements.empty()) {
-                 elements.classed('hover', true);
+               var seq = _oscCache.sequences[d.sequence_id];
+
+               if (!seq) {
+                 seq = {
+                   rotation: 0,
+                   images: []
+                 };
+                 _oscCache.sequences[d.sequence_id] = seq;

                }
                }

+
+               seq.images[d.sequence_index] = d;
+               _oscCache.images.forImageKey[d.key] = d; // cache imageKey -> image

              }
              }

-           };

 
 

-           sidebar.hoverModeSelect = throttle(hoverModeSelect, 200);
+             return {
+               minX: loc[0],
+               minY: loc[1],
+               maxX: loc[0],
+               maxY: loc[1],
+               data: d
+             };
+           });
+           cache.rtree.load(features);

 
 

-           function hover(targets) {
-             var datum = targets && targets.length && targets[0];
+           if (data.currentPageItems.length === maxResults$1) {
+             // more pages to load
+             cache.nextPage[tile.id] = nextPage + 1;
+             loadNextTilePage$1(which, currZoom, url, tile);
+           } else {
+             cache.nextPage[tile.id] = Infinity; // no more pages to load
+           }

 
 

-             if (datum && datum.__featurehash__) {
-               // hovering on data
-               _wasData = true;
-               sidebar.show(dataEditor.datum(datum));
-               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
-             } else if (datum instanceof osmNote) {
-               if (context.mode().id === 'drag-note') return;
-               _wasNote = true;
-               var osm = services.osm;
+           if (which === 'images') {
+             dispatch$3.call('loadedImages');
+           }
+         })["catch"](function () {
+           cache.loaded[id] = true;
+           delete cache.inflight[id];
+         });
+       } // partition viewport into higher zoom tiles

 
 

-               if (osm) {
-                 datum = osm.getNote(datum.id); // marker may contain stale data - get latest
-               }

 
 

-               sidebar.show(noteEditor.note(datum));
-               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
-             } else if (datum instanceof QAItem) {
-               _wasQaItem = true;
-               var errService = services[datum.service];
+       function partitionViewport$1(projection) {
+         var z = geoScaleToZoom(projection.scale());
+         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5

 
 

-               if (errService) {
-                 // marker may contain stale data - get latest
-                 datum = errService.getError(datum.id);
-               } // Currently only three possible services
+         var tiler = utilTiler().zoomExtent([z2, z2]);
+         return tiler.getTiles(projection).map(function (tile) {
+           return tile.extent;
+         });
+       } // no more than `limit` results per partition.

 
 
 
 

-               var errEditor;
+       function searchLimited$1(limit, projection, rtree) {
+         limit = limit || 5;
+         return partitionViewport$1(projection).reduce(function (result, extent) {
+           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
+             return d.data;
+           });
+           return found.length ? result.concat(found) : result;
+         }, []);
+       }

 
 

-               if (datum.service === 'keepRight') {
-                 errEditor = keepRightEditor;
-               } else if (datum.service === 'osmose') {
-                 errEditor = osmoseEditor;
-               } else {
-                 errEditor = improveOsmEditor;
-               }
+       var serviceOpenstreetcam = {
+         init: function init() {
+           if (!_oscCache) {
+             this.reset();
+           }

 
 

-               context.container().selectAll('.qaItem.' + datum.service).classed('hover', function (d) {
-                 return d.id === datum.id;
-               });
-               sidebar.show(errEditor.error(datum));
-               selection.selectAll('.sidebar-component').classed('inspector-hover', true);
-             } else if (!_current && datum instanceof osmEntity) {
-               featureListWrap.classed('inspector-hidden', true);
-               inspectorWrap.classed('inspector-hidden', false).classed('inspector-hover', true);
+           this.event = utilRebind(this, dispatch$3, 'on');
+         },
+         reset: function reset() {
+           if (_oscCache) {
+             Object.values(_oscCache.images.inflight).forEach(abortRequest$3);
+           }

 
 

-               if (!inspector.entityIDs() || !utilArrayIdentical(inspector.entityIDs(), [datum.id]) || inspector.state() !== 'hover') {
-                 inspector.state('hover').entityIDs([datum.id]).newFeature(false);
-                 inspectorWrap.call(inspector);
-               }
-             } else if (!_current) {
-               featureListWrap.classed('inspector-hidden', false);
-               inspectorWrap.classed('inspector-hidden', true);
-               inspector.state('hide');
-             } else if (_wasData || _wasNote || _wasQaItem) {
-               _wasNote = false;
-               _wasData = false;
-               _wasQaItem = false;
-               context.container().selectAll('.note').classed('hover', false);
-               context.container().selectAll('.qaItem').classed('hover', false);
-               sidebar.hide();
+           _oscCache = {
+             images: {
+               inflight: {},
+               loaded: {},
+               nextPage: {},
+               rtree: new RBush(),
+               forImageKey: {}
+             },
+             sequences: {}
+           };
+           _oscSelectedImage = null;
+         },
+         images: function images(projection) {
+           var limit = 5;
+           return searchLimited$1(limit, projection, _oscCache.images.rtree);
+         },
+         sequences: function sequences(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           var sequenceKeys = {}; // all sequences for images in viewport
+
+           _oscCache.images.rtree.search(bbox).forEach(function (d) {
+             sequenceKeys[d.data.sequence_id] = true;
+           }); // make linestrings from those sequences
+
+
+           var lineStrings = [];
+           Object.keys(sequenceKeys).forEach(function (sequenceKey) {
+             var seq = _oscCache.sequences[sequenceKey];
+             var images = seq && seq.images;
+
+             if (images) {
+               lineStrings.push({
+                 type: 'LineString',
+                 coordinates: images.map(function (d) {
+                   return d.loc;
+                 }).filter(Boolean),
+                 properties: {
+                   captured_at: images[0] ? images[0].captured_at : null,
+                   captured_by: images[0] ? images[0].captured_by : null,
+                   key: sequenceKey
+                 }
+               });

              }
              }

-           }
+           });
+           return lineStrings;
+         },
+         cachedImage: function cachedImage(imageKey) {
+           return _oscCache.images.forImageKey[imageKey];
+         },
+         loadImages: function loadImages(projection) {
+           var url = apibase$1 + '/1.0/list/nearby-photos/';
+           loadTiles$1('images', url, projection);
+         },
+         ensureViewerLoaded: function ensureViewerLoaded(context) {
+           if (_loadViewerPromise$1) return _loadViewerPromise$1; // add osc-wrapper

 
 

-           sidebar.hover = throttle(hover, 200);
+           var wrap = context.container().select('.photoviewer').selectAll('.osc-wrapper').data([0]);
+           var that = this;
+           var wrapEnter = wrap.enter().append('div').attr('class', 'photo-wrapper osc-wrapper').classed('hide', true).call(imgZoom.on('zoom', zoomPan)).on('dblclick.zoom', null);
+           wrapEnter.append('div').attr('class', 'photo-attribution fillD');
+           var controlsEnter = wrapEnter.append('div').attr('class', 'photo-controls-wrap').append('div').attr('class', 'photo-controls');
+           controlsEnter.append('button').on('click.back', step(-1)).html('◄');
+           controlsEnter.append('button').on('click.rotate-ccw', rotate(-90)).html('⤿');
+           controlsEnter.append('button').on('click.rotate-cw', rotate(90)).html('⤾');
+           controlsEnter.append('button').on('click.forward', step(1)).html('►');
+           wrapEnter.append('div').attr('class', 'osc-image-wrap'); // Register viewer resize handler

 
 

-           sidebar.intersects = function (extent) {
-             var rect = selection.node().getBoundingClientRect();
-             return extent.intersects([context.projection.invert([0, rect.height]), context.projection.invert([rect.width, 0])]);
-           };
+           context.ui().photoviewer.on('resize.openstreetcam', function (dimensions) {
+             imgZoom = d3_zoom().extent([[0, 0], dimensions]).translateExtent([[0, 0], dimensions]).scaleExtent([1, 15]).on('zoom', zoomPan);
+           });

 
 

-           sidebar.select = function (ids, newFeature) {
-             sidebar.hide();
+           function zoomPan(d3_event) {
+             var t = d3_event.transform;
+             context.container().select('.photoviewer .osc-image-wrap').call(utilSetTransform, t.x, t.y, t.k);
+           }

 
 

-             if (ids && ids.length) {
-               var entity = ids.length === 1 && context.entity(ids[0]);
+           function rotate(deg) {
+             return function () {
+               if (!_oscSelectedImage) return;
+               var sequenceKey = _oscSelectedImage.sequence_id;
+               var sequence = _oscCache.sequences[sequenceKey];
+               if (!sequence) return;
+               var r = sequence.rotation || 0;
+               r += deg;
+               if (r > 180) r -= 360;
+               if (r < -180) r += 360;
+               sequence.rotation = r;
+               var wrap = context.container().select('.photoviewer .osc-wrapper');
+               wrap.transition().duration(100).call(imgZoom.transform, identity$2);
+               wrap.selectAll('.osc-image').transition().duration(100).style('transform', 'rotate(' + r + 'deg)');
+             };
+           }

 
 

-               if (entity && newFeature && selection.classed('collapsed')) {
-                 // uncollapse the sidebar
-                 var extent = entity.extent(context.graph());
-                 sidebar.expand(sidebar.intersects(extent));
-               }
+           function step(stepBy) {
+             return function () {
+               if (!_oscSelectedImage) return;
+               var sequenceKey = _oscSelectedImage.sequence_id;
+               var sequence = _oscCache.sequences[sequenceKey];
+               if (!sequence) return;
+               var nextIndex = _oscSelectedImage.sequence_index + stepBy;
+               var nextImage = sequence.images[nextIndex];
+               if (!nextImage) return;
+               context.map().centerEase(nextImage.loc);
+               that.selectImage(context, nextImage.key);
+             };
+           } // don't need any async loading so resolve immediately

 
 

-               featureListWrap.classed('inspector-hidden', true);
-               inspectorWrap.classed('inspector-hidden', false).classed('inspector-hover', false); // reload the UI even if the ids are the same since the entities
-               // themselves may have changed

 
 

-               inspector.state('select').entityIDs(ids).newFeature(newFeature);
-               inspectorWrap.call(inspector);
-             } else {
-               inspector.state('hide');
-             }
-           };
+           _loadViewerPromise$1 = Promise.resolve();
+           return _loadViewerPromise$1;
+         },
+         showViewer: function showViewer(context) {
+           var viewer = context.container().select('.photoviewer').classed('hide', false);
+           var isHidden = viewer.selectAll('.photo-wrapper.osc-wrapper.hide').size();

 
 

-           sidebar.showPresetList = function () {
-             inspector.showList();
-           };
+           if (isHidden) {
+             viewer.selectAll('.photo-wrapper:not(.osc-wrapper)').classed('hide', true);
+             viewer.selectAll('.photo-wrapper.osc-wrapper').classed('hide', false);
+           }

 
 

-           sidebar.show = function (component, element) {
-             featureListWrap.classed('inspector-hidden', true);
-             inspectorWrap.classed('inspector-hidden', true);
-             if (_current) _current.remove();
-             _current = selection.append('div').attr('class', 'sidebar-component').call(component, element);
-           };
+           return this;
+         },
+         hideViewer: function hideViewer(context) {
+           _oscSelectedImage = null;
+           this.updateUrlImage(null);
+           var viewer = context.container().select('.photoviewer');
+           if (!viewer.empty()) viewer.datum(null);
+           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
+           context.container().selectAll('.viewfield-group, .sequence, .icon-sign').classed('currentView', false);
+           return this.setStyles(context, null, true);
+         },
+         selectImage: function selectImage(context, imageKey) {
+           var d = this.cachedImage(imageKey);
+           _oscSelectedImage = d;
+           this.updateUrlImage(imageKey);
+           var viewer = context.container().select('.photoviewer');
+           if (!viewer.empty()) viewer.datum(d);
+           this.setStyles(context, null, true);
+           context.container().selectAll('.icon-sign').classed('currentView', false);
+           if (!d) return this;
+           var wrap = context.container().select('.photoviewer .osc-wrapper');
+           var imageWrap = wrap.selectAll('.osc-image-wrap');
+           var attribution = wrap.selectAll('.photo-attribution').html('');
+           wrap.transition().duration(100).call(imgZoom.transform, identity$2);
+           imageWrap.selectAll('.osc-image').remove();

 
 

-           sidebar.hide = function () {
-             featureListWrap.classed('inspector-hidden', false);
-             inspectorWrap.classed('inspector-hidden', true);
-             if (_current) _current.remove();
-             _current = null;
-           };
+           if (d) {
+             var sequence = _oscCache.sequences[d.sequence_id];
+             var r = sequence && sequence.rotation || 0;
+             imageWrap.append('img').attr('class', 'osc-image').attr('src', apibase$1 + '/' + d.imagePath).style('transform', 'rotate(' + r + 'deg)');

 
 

-           sidebar.expand = function (moveMap) {
-             if (selection.classed('collapsed')) {
-               sidebar.toggle(moveMap);
+             if (d.captured_by) {
+               attribution.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://openstreetcam.org/user/' + encodeURIComponent(d.captured_by)).html('@' + d.captured_by);
+               attribution.append('span').html('|');

              }
              }

-           };

 
 

-           sidebar.collapse = function (moveMap) {
-             if (!selection.classed('collapsed')) {
-               sidebar.toggle(moveMap);
+             if (d.captured_at) {
+               attribution.append('span').attr('class', 'captured_at').html(localeDateString(d.captured_at));
+               attribution.append('span').html('|');

              }
              }

-           };

 
 

-           sidebar.toggle = function (moveMap) {
-             // Don't allow sidebar to toggle when the user is in the walkthrough.
-             if (context.inIntro()) return;
-             var isCollapsed = selection.classed('collapsed');
-             var isCollapsing = !isCollapsed;
-             var isRTL = _mainLocalizer.textDirection() === 'rtl';
-             var scaleX = isRTL ? 0 : 1;
-             var xMarginProperty = isRTL ? 'margin-right' : 'margin-left';
-             sidebarWidth = selection.node().getBoundingClientRect().width; // switch from % to px
+             attribution.append('a').attr('class', 'image-link').attr('target', '_blank').attr('href', 'https://openstreetcam.org/details/' + d.sequence_id + '/' + d.sequence_index).html('openstreetcam.org');
+           }

 
 

-             selection.style('width', sidebarWidth + 'px');
-             var startMargin, endMargin, lastMargin;
+           return this;

 
 

-             if (isCollapsing) {
-               startMargin = lastMargin = 0;
-               endMargin = -sidebarWidth;
-             } else {
-               startMargin = lastMargin = -sidebarWidth;
-               endMargin = 0;
-             }
+           function localeDateString(s) {
+             if (!s) return null;
+             var options = {
+               day: 'numeric',
+               month: 'short',
+               year: 'numeric'
+             };
+             var d = new Date(s);
+             if (isNaN(d.getTime())) return null;
+             return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+           }
+         },
+         getSelectedImage: function getSelectedImage() {
+           return _oscSelectedImage;
+         },
+         getSequenceKeyForImage: function getSequenceKeyForImage(d) {
+           return d && d.sequence_id;
+         },
+         // Updates the currently highlighted sequence and selected bubble.
+         // Reset is only necessary when interacting with the viewport because
+         // this implicitly changes the currently selected bubble/sequence
+         setStyles: function setStyles(context, hovered, reset) {
+           if (reset) {
+             // reset all layers
+             context.container().selectAll('.viewfield-group').classed('highlighted', false).classed('hovered', false).classed('currentView', false);
+             context.container().selectAll('.sequence').classed('highlighted', false).classed('currentView', false);
+           }

 
 

-             selection.transition().style(xMarginProperty, endMargin + 'px').tween('panner', function () {
-               var i = d3_interpolateNumber(startMargin, endMargin);
-               return function (t) {
-                 var dx = lastMargin - Math.round(i(t));
-                 lastMargin = lastMargin - dx;
-                 context.ui().onResize(moveMap ? undefined : [dx * scaleX, 0]);
-               };
-             }).on('end', function () {
-               selection.classed('collapsed', isCollapsing); // switch back from px to %
+           var hoveredImageKey = hovered && hovered.key;
+           var hoveredSequenceKey = this.getSequenceKeyForImage(hovered);
+           var hoveredSequence = hoveredSequenceKey && _oscCache.sequences[hoveredSequenceKey];
+           var hoveredImageKeys = hoveredSequence && hoveredSequence.images.map(function (d) {
+             return d.key;
+           }) || [];
+           var viewer = context.container().select('.photoviewer');
+           var selected = viewer.empty() ? undefined : viewer.datum();
+           var selectedImageKey = selected && selected.key;
+           var selectedSequenceKey = this.getSequenceKeyForImage(selected);
+           var selectedSequence = selectedSequenceKey && _oscCache.sequences[selectedSequenceKey];
+           var selectedImageKeys = selectedSequence && selectedSequence.images.map(function (d) {
+             return d.key;
+           }) || []; // highlight sibling viewfields on either the selected or the hovered sequences

 
 

-               if (!isCollapsing) {
-                 var containerWidth = container.node().getBoundingClientRect().width;
-                 var widthPct = sidebarWidth / containerWidth * 100;
-                 selection.style(xMarginProperty, null).style('width', widthPct + '%');
-               }
-             });
-           }; // toggle the sidebar collapse when double-clicking the resizer
+           var highlightedImageKeys = utilArrayUnion(hoveredImageKeys, selectedImageKeys);
+           context.container().selectAll('.layer-openstreetcam .viewfield-group').classed('highlighted', function (d) {
+             return highlightedImageKeys.indexOf(d.key) !== -1;
+           }).classed('hovered', function (d) {
+             return d.key === hoveredImageKey;
+           }).classed('currentView', function (d) {
+             return d.key === selectedImageKey;
+           });
+           context.container().selectAll('.layer-openstreetcam .sequence').classed('highlighted', function (d) {
+             return d.properties.key === hoveredSequenceKey;
+           }).classed('currentView', function (d) {
+             return d.properties.key === selectedSequenceKey;
+           }); // update viewfields if needed

 
 

+           context.container().selectAll('.layer-openstreetcam .viewfield-group .viewfield').attr('d', viewfieldPath);

 
 

-           resizer.on('dblclick', function (d3_event) {
-             d3_event.preventDefault();
+           function viewfieldPath() {
+             var d = this.parentNode.__data__;

 
 

-             if (d3_event.sourceEvent) {
-               d3_event.sourceEvent.preventDefault();
+             if (d.pano && d.key !== selectedImageKey) {
+               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
+             } else {
+               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';

              }
              }

+           }

 
 

-             sidebar.toggle();
-           }); // ensure hover sidebar is closed when zooming out beyond editable zoom
+           return this;
+         },
+         updateUrlImage: function updateUrlImage(imageKey) {
+           if (!window.mocha) {
+             var hash = utilStringQs(window.location.hash);

 
 

-           context.map().on('crossEditableZoom.sidebar', function (within) {
-             if (!within && !selection.select('.inspector-hover').empty()) {
-               hover([]);
+             if (imageKey) {
+               hash.photo = 'openstreetcam/' + imageKey;
+             } else {
+               delete hash.photo;

              }
              }

-           });
-         }
-
-         sidebar.showPresetList = function () {};

 
 

-         sidebar.hover = function () {};
+             window.location.replace('#' + utilQsString(hash, true));
+           }
+         },
+         cache: function cache() {
+           return _oscCache;
+         }
+       };

 
 

-         sidebar.hover.cancel = function () {};
+       var hashes$1 = {exports: {}};

 
 

-         sidebar.intersects = function () {};
+       (function (module, exports) {
+         (function () {
+           var Hashes;

 
 

-         sidebar.select = function () {};
+           function utf8Encode(str) {
+             var x,
+                 y,
+                 output = '',
+                 i = -1,
+                 l;

 
 

-         sidebar.show = function () {};
+             if (str && str.length) {
+               l = str.length;

 
 

-         sidebar.hide = function () {};
+               while ((i += 1) < l) {
+                 /* Decode utf-16 surrogate pairs */
+                 x = str.charCodeAt(i);
+                 y = i + 1 < l ? str.charCodeAt(i + 1) : 0;

 
 

-         sidebar.expand = function () {};
+                 if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
+                   x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
+                   i += 1;
+                 }
+                 /* Encode output as utf-8 */

 
 

-         sidebar.collapse = function () {};

 
 

-         sidebar.toggle = function () {};
+                 if (x <= 0x7F) {
+                   output += String.fromCharCode(x);
+                 } else if (x <= 0x7FF) {
+                   output += String.fromCharCode(0xC0 | x >>> 6 & 0x1F, 0x80 | x & 0x3F);
+                 } else if (x <= 0xFFFF) {
+                   output += String.fromCharCode(0xE0 | x >>> 12 & 0x0F, 0x80 | x >>> 6 & 0x3F, 0x80 | x & 0x3F);
+                 } else if (x <= 0x1FFFFF) {
+                   output += String.fromCharCode(0xF0 | x >>> 18 & 0x07, 0x80 | x >>> 12 & 0x3F, 0x80 | x >>> 6 & 0x3F, 0x80 | x & 0x3F);
+                 }
+               }
+             }

 
 

-         return sidebar;
-       }
+             return output;
+           }

 
 

-       function uiSourceSwitch(context) {
-         var keys;
+           function utf8Decode(str) {
+             var i,
+                 ac,
+                 c1,
+                 c2,
+                 c3,
+                 arr = [],
+                 l;
+             i = ac = c1 = c2 = c3 = 0;

 
 

-         function click(d3_event) {
-           d3_event.preventDefault();
-           var osm = context.connection();
-           if (!osm) return;
-           if (context.inIntro()) return;
-           if (context.history().hasChanges() && !window.confirm(_t('source_switch.lose_changes'))) return;
-           var isLive = select(this).classed('live');
-           isLive = !isLive;
-           context.enter(modeBrowse(context));
-           context.history().clearSaved(); // remove saved history
+             if (str && str.length) {
+               l = str.length;
+               str += '';

 
 

-           context.flush(); // remove stored data
+               while (i < l) {
+                 c1 = str.charCodeAt(i);
+                 ac += 1;

 
 

-           select(this).html(isLive ? _t.html('source_switch.live') : _t.html('source_switch.dev')).classed('live', isLive).classed('chip', isLive);
-           osm["switch"](isLive ? keys[0] : keys[1]); // switch connection (warning: dispatches 'change' event)
-         }
+                 if (c1 < 128) {
+                   arr[ac] = String.fromCharCode(c1);
+                   i += 1;
+                 } else if (c1 > 191 && c1 < 224) {
+                   c2 = str.charCodeAt(i + 1);
+                   arr[ac] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);
+                   i += 2;
+                 } else {
+                   c2 = str.charCodeAt(i + 1);
+                   c3 = str.charCodeAt(i + 2);
+                   arr[ac] = String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
+                   i += 3;
+                 }
+               }
+             }

 
 

-         var sourceSwitch = function sourceSwitch(selection) {
-           selection.append('a').attr('href', '#').html(_t.html('source_switch.live')).attr('class', 'live chip').on('click', click);
-         };
+             return arr.join('');
+           }
+           /**
+            * Add integers, wrapping at 2^32. This uses 16-bit operations internally
+            * to work around bugs in some JS interpreters.
+            */

 
 

-         sourceSwitch.keys = function (_) {
-           if (!arguments.length) return keys;
-           keys = _;
-           return sourceSwitch;
-         };

 
 

-         return sourceSwitch;
-       }
+           function safe_add(x, y) {
+             var lsw = (x & 0xFFFF) + (y & 0xFFFF),
+                 msw = (x >> 16) + (y >> 16) + (lsw >> 16);
+             return msw << 16 | lsw & 0xFFFF;
+           }
+           /**
+            * Bitwise rotate a 32-bit number to the left.
+            */

 
 

-       function uiSpinner(context) {
-         var osm = context.connection();
-         return function (selection) {
-           var img = selection.append('img').attr('src', context.imagePath('loader-black.gif')).style('opacity', 0);

 
 

-           if (osm) {
-             osm.on('loading.spinner', function () {
-               img.transition().style('opacity', 1);
-             }).on('loaded.spinner', function () {
-               img.transition().style('opacity', 0);
-             });
+           function bit_rol(num, cnt) {
+             return num << cnt | num >>> 32 - cnt;

            }
            }

-         };
-       }
+           /**
+            * Convert a raw string to a hex string
+            */

 
 

-       function uiSplash(context) {
-         return function (selection) {
-           // Exception - if there are restorable changes, skip this splash screen.
-           // This is because we currently only support one `uiModal` at a time
-           //  and we need to show them `uiRestore`` instead of this one.
-           if (context.history().hasRestorableChanges()) return; // If user has not seen this version of the privacy policy, show the splash again.

 
 

-           var updateMessage = '';
-           var sawPrivacyVersion = corePreferences('sawPrivacyVersion');
-           var showSplash = !corePreferences('sawSplash');
+           function rstr2hex(input, hexcase) {
+             var hex_tab = hexcase ? '0123456789ABCDEF' : '0123456789abcdef',
+                 output = '',
+                 x,
+                 i = 0,
+                 l = input.length;

 
 

-           if (sawPrivacyVersion !== context.privacyVersion) {
-             updateMessage = _t('splash.privacy_update');
-             showSplash = true;
-           }
+             for (; i < l; i += 1) {
+               x = input.charCodeAt(i);
+               output += hex_tab.charAt(x >>> 4 & 0x0F) + hex_tab.charAt(x & 0x0F);
+             }

 
 

-           if (!showSplash) return;
-           corePreferences('sawSplash', true);
-           corePreferences('sawPrivacyVersion', context.privacyVersion); // fetch intro graph data now, while user is looking at the splash screen
+             return output;
+           }
+           /**
+            * Convert an array of big-endian words to a string
+            */

 
 

-           _mainFileFetcher.get('intro_graph');
-           var modalSelection = uiModal(selection);
-           modalSelection.select('.modal').attr('class', 'modal-splash modal');
-           var introModal = modalSelection.select('.content').append('div').attr('class', 'fillL');
-           introModal.append('div').attr('class', 'modal-section').append('h3').html(_t.html('splash.welcome'));
-           var modalSection = introModal.append('div').attr('class', 'modal-section');
-           modalSection.append('p').html(_t.html('splash.text', {
-             version: context.version,
-             website: '<a target="_blank" href="http://ideditor.blog/">ideditor.blog</a>',
-             github: '<a target="_blank" href="https://github.com/openstreetmap/iD">github.com</a>'
-           }));
-           modalSection.append('p').html(_t.html('splash.privacy', {
-             updateMessage: updateMessage,
-             privacyLink: '<a target="_blank" href="https://github.com/openstreetmap/iD/blob/release/PRIVACY.md">' + _t('splash.privacy_policy') + '</a>'
-           }));
-           var buttonWrap = introModal.append('div').attr('class', 'modal-actions');
-           var walkthrough = buttonWrap.append('button').attr('class', 'walkthrough').on('click', function () {
-             context.container().call(uiIntro(context));
-             modalSelection.close();
-           });
-           walkthrough.append('svg').attr('class', 'logo logo-walkthrough').append('use').attr('xlink:href', '#iD-logo-walkthrough');
-           walkthrough.append('div').html(_t.html('splash.walkthrough'));
-           var startEditing = buttonWrap.append('button').attr('class', 'start-editing').on('click', modalSelection.close);
-           startEditing.append('svg').attr('class', 'logo logo-features').append('use').attr('xlink:href', '#iD-logo-features');
-           startEditing.append('div').html(_t.html('splash.start'));
-           modalSelection.select('button.close').attr('class', 'hide');
-         };
-       }

 
 

-       function uiStatus(context) {
-         var osm = context.connection();
-         return function (selection) {
-           if (!osm) return;
+           function binb2rstr(input) {
+             var i,
+                 l = input.length * 32,
+                 output = '';

 
 

-           function update(err, apiStatus) {
-             selection.html('');
+             for (i = 0; i < l; i += 8) {
+               output += String.fromCharCode(input[i >> 5] >>> 24 - i % 32 & 0xFF);
+             }

 
 

-             if (err) {
-               if (apiStatus === 'connectionSwitched') {
-                 // if the connection was just switched, we can't rely on
-                 // the status (we're getting the status of the previous api)
-                 return;
-               } else if (apiStatus === 'rateLimited') {
-                 selection.html(_t.html('osm_api_status.message.rateLimit')).append('a').attr('href', '#').attr('class', 'api-status-login').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('login')).on('click.login', function (d3_event) {
-                   d3_event.preventDefault();
-                   osm.authenticate();
-                 });
-               } else {
-                 // don't allow retrying too rapidly
-                 var throttledRetry = throttle(function () {
-                   // try loading the visible tiles
-                   context.loadTiles(context.projection); // manually reload the status too in case all visible tiles were already loaded
+             return output;
+           }
+           /**
+            * Convert an array of little-endian words to a string
+            */

 
 

-                   osm.reloadApiStatus();
-                 }, 2000); // eslint-disable-next-line no-warning-comments
-                 // TODO: nice messages for different error types

 
 

+           function binl2rstr(input) {
+             var i,
+                 l = input.length * 32,
+                 output = '';

 
 

-                 selection.html(_t.html('osm_api_status.message.error') + ' ').append('a').attr('href', '#') // let the user manually retry their connection directly
-                 .html(_t.html('osm_api_status.retry')).on('click.retry', function (d3_event) {
-                   d3_event.preventDefault();
-                   throttledRetry();
-                 });
-               }
-             } else if (apiStatus === 'readonly') {
-               selection.html(_t.html('osm_api_status.message.readonly'));
-             } else if (apiStatus === 'offline') {
-               selection.html(_t.html('osm_api_status.message.offline'));
+             for (i = 0; i < l; i += 8) {
+               output += String.fromCharCode(input[i >> 5] >>> i % 32 & 0xFF);

              }
 
              }
 

-             selection.attr('class', 'api-status ' + (err ? 'error' : apiStatus));
+             return output;

            }
            }

+           /**
+            * Convert a raw string to an array of little-endian words
+            * Characters >255 have their high-byte silently ignored.
+            */

 
 

-           osm.on('apiStatusChange.uiStatus', update); // reload the status periodically regardless of other factors

 
 

-           window.setInterval(function () {
-             osm.reloadApiStatus();
-           }, 90000); // load the initial status in case no OSM data was loaded yet
+           function rstr2binl(input) {
+             var i,
+                 l = input.length * 8,
+                 output = Array(input.length >> 2),
+                 lo = output.length;

 
 

-           osm.reloadApiStatus();
-         };
-       }
+             for (i = 0; i < lo; i += 1) {
+               output[i] = 0;
+             }

 
 

-       function modeDrawArea(context, wayID, startGraph, button) {
-         var mode = {
-           button: button,
-           id: 'draw-area'
-         };
-         var behavior = behaviorDrawWay(context, wayID, mode, startGraph).on('rejectedSelfIntersection.modeDrawArea', function () {
-           context.ui().flash.iconName('#iD-icon-no').label(_t('self_intersection.error.areas'))();
-         });
-         mode.wayID = wayID;
+             for (i = 0; i < l; i += 8) {
+               output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << i % 32;
+             }

 
 

-         mode.enter = function () {
-           context.install(behavior);
-         };
+             return output;
+           }
+           /**
+            * Convert a raw string to an array of big-endian words
+            * Characters >255 have their high-byte silently ignored.
+            */

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };

 
 

-         mode.selectedIDs = function () {
-           return [wayID];
-         };
+           function rstr2binb(input) {
+             var i,
+                 l = input.length * 8,
+                 output = Array(input.length >> 2),
+                 lo = output.length;

 
 

-         mode.activeID = function () {
-           return behavior && behavior.activeID() || [];
-         };
+             for (i = 0; i < lo; i += 1) {
+               output[i] = 0;
+             }

 
 

-         return mode;
-       }
+             for (i = 0; i < l; i += 8) {
+               output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << 24 - i % 32;
+             }

 
 

-       function modeAddArea(context, mode) {
-         mode.id = 'add-area';
-         var behavior = behaviorAddWay(context).on('start', start).on('startFromWay', startFromWay).on('startFromNode', startFromNode);
-         var defaultTags = {
-           area: 'yes'
-         };
-         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'area');
+             return output;
+           }
+           /**
+            * Convert a raw string to an arbitrary string encoding
+            */

 
 

-         function actionClose(wayId) {
-           return function (graph) {
-             return graph.replace(graph.entity(wayId).close());
-           };
-         }

 
 

-         function start(loc) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id));
-           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));
-         }
+           function rstr2any(input, encoding) {
+             var divisor = encoding.length,
+                 remainders = Array(),
+                 i,
+                 q,
+                 x,
+                 ld,
+                 quotient,
+                 dividend,
+                 output,
+                 full_length;
+             /* Convert to an array of 16-bit big-endian values, forming the dividend */

 
 

-         function startFromWay(loc, edge) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id), actionAddMidpoint({
-             loc: loc,
-             edge: edge
-           }, node));
-           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));
-         }
+             dividend = Array(Math.ceil(input.length / 2));
+             ld = dividend.length;

 
 

-         function startFromNode(node) {
-           var startGraph = context.graph();
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(way), actionAddVertex(way.id, node.id), actionClose(way.id));
-           context.enter(modeDrawArea(context, way.id, startGraph, mode.button));
-         }
+             for (i = 0; i < ld; i += 1) {
+               dividend[i] = input.charCodeAt(i * 2) << 8 | input.charCodeAt(i * 2 + 1);
+             }
+             /**
+              * Repeatedly perform a long division. The binary array forms the dividend,
+              * the length of the encoding is the divisor. Once computed, the quotient
+              * forms the dividend for the next step. We stop when the dividend is zerHashes.
+              * All remainders are stored for later use.
+              */

 
 

-         mode.enter = function () {
-           context.install(behavior);
-         };

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+             while (dividend.length > 0) {
+               quotient = Array();
+               x = 0;

 
 

-         return mode;
-       }
+               for (i = 0; i < dividend.length; i += 1) {
+                 x = (x << 16) + dividend[i];
+                 q = Math.floor(x / divisor);
+                 x -= q * divisor;

 
 

-       function modeAddLine(context, mode) {
-         mode.id = 'add-line';
-         var behavior = behaviorAddWay(context).on('start', start).on('startFromWay', startFromWay).on('startFromNode', startFromNode);
-         var defaultTags = {};
-         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'line');
+                 if (quotient.length > 0 || q > 0) {
+                   quotient[quotient.length] = q;
+                 }
+               }

 
 

-         function start(loc) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id));
-           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
-         }
+               remainders[remainders.length] = x;
+               dividend = quotient;
+             }
+             /* Convert the remainders to the output string */

 
 

-         function startFromWay(loc, edge) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id), actionAddMidpoint({
-             loc: loc,
-             edge: edge
-           }, node));
-           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
-         }

 
 

-         function startFromNode(node) {
-           var startGraph = context.graph();
-           var way = osmWay({
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(way), actionAddVertex(way.id, node.id));
-           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
-         }
+             output = '';

 
 

-         mode.enter = function () {
-           context.install(behavior);
-         };
+             for (i = remainders.length - 1; i >= 0; i--) {
+               output += encoding.charAt(remainders[i]);
+             }
+             /* Append leading zero equivalents */

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };

 
 

-         return mode;
-       }
+             full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));

 
 

-       function modeAddPoint(context, mode) {
-         mode.id = 'add-point';
-         var behavior = behaviorDraw(context).on('click', add).on('clickWay', addWay).on('clickNode', addNode).on('cancel', cancel).on('finish', cancel);
-         var defaultTags = {};
-         if (mode.preset) defaultTags = mode.preset.setTags(defaultTags, 'point');
+             for (i = output.length; i < full_length; i += 1) {
+               output = encoding[0] + output;
+             }

 
 

-         function add(loc) {
-           var node = osmNode({
-             loc: loc,
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), _t('operations.add.annotation.point'));
-           enterSelectMode(node);
-         }
+             return output;
+           }
+           /**
+            * Convert a raw string to a base-64 string
+            */

 
 

-         function addWay(loc, edge) {
-           var node = osmNode({
-             tags: defaultTags
-           });
-           context.perform(actionAddMidpoint({
-             loc: loc,
-             edge: edge
-           }, node), _t('operations.add.annotation.vertex'));
-           enterSelectMode(node);
-         }

 
 

-         function enterSelectMode(node) {
-           context.enter(modeSelect(context, [node.id]).newFeature(true));
-         }
+           function rstr2b64(input, b64pad) {
+             var tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
+                 output = '',
+                 len = input.length,
+                 i,
+                 j,
+                 triplet;
+             b64pad = b64pad || '=';

 
 

-         function addNode(node) {
-           if (Object.keys(defaultTags).length === 0) {
-             enterSelectMode(node);
-             return;
-           }
+             for (i = 0; i < len; i += 3) {
+               triplet = input.charCodeAt(i) << 16 | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);

 
 

-           var tags = Object.assign({}, node.tags); // shallow copy
+               for (j = 0; j < 4; j += 1) {
+                 if (i * 8 + j * 6 > input.length * 8) {
+                   output += b64pad;
+                 } else {
+                   output += tab.charAt(triplet >>> 6 * (3 - j) & 0x3F);
+                 }
+               }
+             }

 
 

-           for (var key in defaultTags) {
-             tags[key] = defaultTags[key];
+             return output;

            }
 
            }
 

-           context.perform(actionChangeTags(node.id, tags), _t('operations.add.annotation.point'));
-           enterSelectMode(node);
-         }
+           Hashes = {
+             /**
+              * @property {String} version
+              * @readonly
+              */
+             VERSION: '1.0.6',

 
 

-         function cancel() {
-           context.enter(modeBrowse(context));
-         }
+             /**
+              * @member Hashes
+              * @class Base64
+              * @constructor
+              */
+             Base64: function Base64() {
+               // private properties
+               var tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
+                   pad = '=',
+                   // URL encoding support @todo
+               utf8 = true; // by default enable UTF-8 support encoding
+               // public method for encoding

 
 

-         mode.enter = function () {
-           context.install(behavior);
-         };
+               this.encode = function (input) {
+                 var i,
+                     j,
+                     triplet,
+                     output = '',
+                     len = input.length;
+                 pad = pad || '=';
+                 input = utf8 ? utf8Encode(input) : input;

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+                 for (i = 0; i < len; i += 3) {
+                   triplet = input.charCodeAt(i) << 16 | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);

 
 

-         return mode;
-       }
+                   for (j = 0; j < 4; j += 1) {
+                     if (i * 8 + j * 6 > len * 8) {
+                       output += pad;
+                     } else {
+                       output += tab.charAt(triplet >>> 6 * (3 - j) & 0x3F);
+                     }
+                   }
+                 }

 
 

-       function modeAddNote(context) {
-         var mode = {
-           id: 'add-note',
-           button: 'note',
-           description: _t.html('modes.add_note.description'),
-           key: _t('modes.add_note.key')
-         };
-         var behavior = behaviorDraw(context).on('click', add).on('cancel', cancel).on('finish', cancel);
+                 return output;
+               }; // public method for decoding

 
 

-         function add(loc) {
-           var osm = services.osm;
-           if (!osm) return;
-           var note = osmNote({
-             loc: loc,
-             status: 'open',
-             comments: []
-           });
-           osm.replaceNote(note); // force a reraw (there is no history change that would otherwise do this)

 
 

-           context.map().pan([0, 0]);
-           context.selectedNoteID(note.id).enter(modeSelectNote(context, note.id).newFeature(true));
-         }
+               this.decode = function (input) {
+                 // var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+                 var i,
+                     o1,
+                     o2,
+                     o3,
+                     h1,
+                     h2,
+                     h3,
+                     h4,
+                     bits,
+                     ac,
+                     dec = '',
+                     arr = [];

 
 

-         function cancel() {
-           context.enter(modeBrowse(context));
-         }
+                 if (!input) {
+                   return input;
+                 }

 
 

-         mode.enter = function () {
-           context.install(behavior);
-         };
+                 i = ac = 0;
+                 input = input.replace(new RegExp('\\' + pad, 'gi'), ''); // use '='
+                 //input += '';

 
 

-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+                 do {
+                   // unpack four hexets into three octets using index points in b64
+                   h1 = tab.indexOf(input.charAt(i += 1));
+                   h2 = tab.indexOf(input.charAt(i += 1));
+                   h3 = tab.indexOf(input.charAt(i += 1));
+                   h4 = tab.indexOf(input.charAt(i += 1));
+                   bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
+                   o1 = bits >> 16 & 0xff;
+                   o2 = bits >> 8 & 0xff;
+                   o3 = bits & 0xff;
+                   ac += 1;

 
 

-         return mode;
-       }
+                   if (h3 === 64) {
+                     arr[ac] = String.fromCharCode(o1);
+                   } else if (h4 === 64) {
+                     arr[ac] = String.fromCharCode(o1, o2);
+                   } else {
+                     arr[ac] = String.fromCharCode(o1, o2, o3);
+                   }
+                 } while (i < input.length);

 
 

-       function uiConflicts(context) {
-         var dispatch$1 = dispatch('cancel', 'save');
-         var keybinding = utilKeybinding('conflicts');
+                 dec = arr.join('');
+                 dec = utf8 ? utf8Decode(dec) : dec;
+                 return dec;
+               }; // set custom pad string

 
 

-         var _origChanges;

 
 

-         var _conflictList;
+               this.setPad = function (str) {
+                 pad = str || pad;
+                 return this;
+               }; // set custom tab string characters

 
 

-         var _shownConflictIndex;

 
 

-         function keybindingOn() {
-           select(document).call(keybinding.on('⎋', cancel, true));
-         }
+               this.setTab = function (str) {
+                 tab = str || tab;
+                 return this;
+               };

 
 

-         function keybindingOff() {
-           select(document).call(keybinding.unbind);
-         }
+               this.setUTF8 = function (bool) {
+                 if (typeof bool === 'boolean') {
+                   utf8 = bool;
+                 }

 
 

-         function tryAgain() {
-           keybindingOff();
-           dispatch$1.call('save');
-         }
+                 return this;
+               };
+             },

 
 

-         function cancel() {
-           keybindingOff();
-           dispatch$1.call('cancel');
-         }
+             /**
+              * CRC-32 calculation
+              * @member Hashes
+              * @method CRC32
+              * @static
+              * @param {String} str Input String
+              * @return {String}
+              */
+             CRC32: function CRC32(str) {
+               var crc = 0,
+                   x = 0,
+                   y = 0,
+                   table,
+                   i,
+                   iTop;
+               str = utf8Encode(str);
+               table = ['00000000 77073096 EE0E612C 990951BA 076DC419 706AF48F E963A535 9E6495A3 0EDB8832 ', '79DCB8A4 E0D5E91E 97D2D988 09B64C2B 7EB17CBD E7B82D07 90BF1D91 1DB71064 6AB020F2 F3B97148 ', '84BE41DE 1ADAD47D 6DDDE4EB F4D4B551 83D385C7 136C9856 646BA8C0 FD62F97A 8A65C9EC 14015C4F ', '63066CD9 FA0F3D63 8D080DF5 3B6E20C8 4C69105E D56041E4 A2677172 3C03E4D1 4B04D447 D20D85FD ', 'A50AB56B 35B5A8FA 42B2986C DBBBC9D6 ACBCF940 32D86CE3 45DF5C75 DCD60DCF ABD13D59 26D930AC ', '51DE003A C8D75180 BFD06116 21B4F4B5 56B3C423 CFBA9599 B8BDA50F 2802B89E 5F058808 C60CD9B2 ', 'B10BE924 2F6F7C87 58684C11 C1611DAB B6662D3D 76DC4190 01DB7106 98D220BC EFD5102A 71B18589 ', '06B6B51F 9FBFE4A5 E8B8D433 7807C9A2 0F00F934 9609A88E E10E9818 7F6A0DBB 086D3D2D 91646C97 ', 'E6635C01 6B6B51F4 1C6C6162 856530D8 F262004E 6C0695ED 1B01A57B 8208F4C1 F50FC457 65B0D9C6 ', '12B7E950 8BBEB8EA FCB9887C 62DD1DDF 15DA2D49 8CD37CF3 FBD44C65 4DB26158 3AB551CE A3BC0074 ', 'D4BB30E2 4ADFA541 3DD895D7 A4D1C46D D3D6F4FB 4369E96A 346ED9FC AD678846 DA60B8D0 44042D73 ', '33031DE5 AA0A4C5F DD0D7CC9 5005713C 270241AA BE0B1010 C90C2086 5768B525 206F85B3 B966D409 ', 'CE61E49F 5EDEF90E 29D9C998 B0D09822 C7D7A8B4 59B33D17 2EB40D81 B7BD5C3B C0BA6CAD EDB88320 ', '9ABFB3B6 03B6E20C 74B1D29A EAD54739 9DD277AF 04DB2615 73DC1683 E3630B12 94643B84 0D6D6A3E ', '7A6A5AA8 E40ECF0B 9309FF9D 0A00AE27 7D079EB1 F00F9344 8708A3D2 1E01F268 6906C2FE F762575D ', '806567CB 196C3671 6E6B06E7 FED41B76 89D32BE0 10DA7A5A 67DD4ACC F9B9DF6F 8EBEEFF9 17B7BE43 ', '60B08ED5 D6D6A3E8 A1D1937E 38D8C2C4 4FDFF252 D1BB67F1 A6BC5767 3FB506DD 48B2364B D80D2BDA ', 'AF0A1B4C 36034AF6 41047A60 DF60EFC3 A867DF55 316E8EEF 4669BE79 CB61B38C BC66831A 256FD2A0 ', '5268E236 CC0C7795 BB0B4703 220216B9 5505262F C5BA3BBE B2BD0B28 2BB45A92 5CB36A04 C2D7FFA7 ', 'B5D0CF31 2CD99E8B 5BDEAE1D 9B64C2B0 EC63F226 756AA39C 026D930A 9C0906A9 EB0E363F 72076785 ', '05005713 95BF4A82 E2B87A14 7BB12BAE 0CB61B38 92D28E9B E5D5BE0D 7CDCEFB7 0BDBDF21 86D3D2D4 ', 'F1D4E242 68DDB3F8 1FDA836E 81BE16CD F6B9265B 6FB077E1 18B74777 88085AE6 FF0F6A70 66063BCA ', '11010B5C 8F659EFF F862AE69 616BFFD3 166CCF45 A00AE278 D70DD2EE 4E048354 3903B3C2 A7672661 ', 'D06016F7 4969474D 3E6E77DB AED16A4A D9D65ADC 40DF0B66 37D83BF0 A9BCAE53 DEBB9EC5 47B2CF7F ', '30B5FFE9 BDBDF21C CABAC28A 53B39330 24B4A3A6 BAD03605 CDD70693 54DE5729 23D967BF B3667A2E ', 'C4614AB8 5D681B02 2A6F2B94 B40BBE37 C30C8EA1 5A05DF1B 2D02EF8D'].join('');
+               crc = crc ^ -1;

 
 

-         function conflicts(selection) {
-           keybindingOn();
-           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
-           headerEnter.append('button').attr('class', 'fr').on('click', cancel).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('save.conflict.header'));
-           var bodyEnter = selection.selectAll('.body').data([0]).enter().append('div').attr('class', 'body fillL');
-           var conflictsHelpEnter = bodyEnter.append('div').attr('class', 'conflicts-help').html(_t.html('save.conflict.help')); // Download changes link
+               for (i = 0, iTop = str.length; i < iTop; i += 1) {
+                 y = (crc ^ str.charCodeAt(i)) & 0xFF;
+                 x = '0x' + table.substr(y * 9, 8);
+                 crc = crc >>> 8 ^ x;
+               } // always return a positive number (that's what >>> 0 does)

 
 

-           var detected = utilDetect();
-           var changeset = new osmChangeset();
-           delete changeset.id; // Export without changeset_id

 
 

-           var data = JXON.stringify(changeset.osmChangeJXON(_origChanges));
-           var blob = new Blob([data], {
-             type: 'text/xml;charset=utf-8;'
-           });
-           var fileName = 'changes.osc';
-           var linkEnter = conflictsHelpEnter.selectAll('.download-changes').append('a').attr('class', 'download-changes');
+               return (crc ^ -1) >>> 0;
+             },

 
 

-           if (detected.download) {
-             // All except IE11 and Edge
-             linkEnter // download the data as a file
-             .attr('href', window.URL.createObjectURL(blob)).attr('download', fileName);
-           } else {
-             // IE11 and Edge
-             linkEnter // open data uri in a new tab
-             .attr('target', '_blank').on('click.download', function () {
-               navigator.msSaveBlob(blob, fileName);
-             });
-           }
+             /**
+              * @member Hashes
+              * @class MD5
+              * @constructor
+              * @param {Object} [config]
+              *
+              * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
+              * Digest Algorithm, as defined in RFC 1321.
+              * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
+              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+              * See <http://pajhome.org.uk/crypt/md5> for more infHashes.
+              */
+             MD5: function MD5(options) {
+               /**
+                * Private config properties. You may need to tweak these to be compatible with
+                * the server-side, but the defaults work in most cases.
+                * See {@link Hashes.MD5#method-setUpperCase} and {@link Hashes.SHA1#method-setUpperCase}
+                */
+               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
+                   // hexadecimal output case format. false - lowercase; true - uppercase
+               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
+                   // base-64 pad character. Defaults to '=' for strict RFC compliance
+               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true; // enable/disable utf8 encoding
+               // privileged (public) methods
+
+               this.hex = function (s) {
+                 return rstr2hex(rstr(s), hexcase);
+               };

 
 

-           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').html(_t.html('save.conflict.download_changes'));
-           bodyEnter.append('div').attr('class', 'conflict-container fillL3').call(showConflict, 0);
-           bodyEnter.append('div').attr('class', 'conflicts-done').attr('opacity', 0).style('display', 'none').html(_t.html('save.conflict.done'));
-           var buttonsEnter = bodyEnter.append('div').attr('class', 'buttons col12 joined conflicts-buttons');
-           buttonsEnter.append('button').attr('disabled', _conflictList.length > 1).attr('class', 'action conflicts-button col6').html(_t.html('save.title')).on('click.try_again', tryAgain);
-           buttonsEnter.append('button').attr('class', 'secondary-action conflicts-button col6').html(_t.html('confirm.cancel')).on('click.cancel', cancel);
-         }
+               this.b64 = function (s) {
+                 return rstr2b64(rstr(s), b64pad);
+               };

 
 

-         function showConflict(selection, index) {
-           index = utilWrap(index, _conflictList.length);
-           _shownConflictIndex = index;
-           var parent = select(selection.node().parentNode); // enable save button if this is the last conflict being reviewed..
+               this.any = function (s, e) {
+                 return rstr2any(rstr(s), e);
+               };

 
 

-           if (index === _conflictList.length - 1) {
-             window.setTimeout(function () {
-               parent.select('.conflicts-button').attr('disabled', null);
-               parent.select('.conflicts-done').transition().attr('opacity', 1).style('display', 'block');
-             }, 250);
-           }
+               this.raw = function (s) {
+                 return rstr(s);
+               };

 
 

-           var conflict = selection.selectAll('.conflict').data([_conflictList[index]]);
-           conflict.exit().remove();
-           var conflictEnter = conflict.enter().append('div').attr('class', 'conflict');
-           conflictEnter.append('h4').attr('class', 'conflict-count').html(_t.html('save.conflict.count', {
-             num: index + 1,
-             total: _conflictList.length
-           }));
-           conflictEnter.append('a').attr('class', 'conflict-description').attr('href', '#').html(function (d) {
-             return d.name;
-           }).on('click', function (d3_event, d) {
-             d3_event.preventDefault();
-             zoomToEntity(d.id);
-           });
-           var details = conflictEnter.append('div').attr('class', 'conflict-detail-container');
-           details.append('ul').attr('class', 'conflict-detail-list').selectAll('li').data(function (d) {
-             return d.details || [];
-           }).enter().append('li').attr('class', 'conflict-detail-item').html(function (d) {
-             return d;
-           });
-           details.append('div').attr('class', 'conflict-choices').call(addChoices);
-           details.append('div').attr('class', 'conflict-nav-buttons joined cf').selectAll('button').data(['previous', 'next']).enter().append('button').html(function (d) {
-             return _t.html('save.conflict.' + d);
-           }).attr('class', 'conflict-nav-button action col6').attr('disabled', function (d, i) {
-             return i === 0 && index === 0 || i === 1 && index === _conflictList.length - 1 || null;
-           }).on('click', function (d3_event, d) {
-             d3_event.preventDefault();
-             var container = parent.selectAll('.conflict-container');
-             var sign = d === 'previous' ? -1 : 1;
-             container.selectAll('.conflict').remove();
-             container.call(showConflict, index + sign);
-           });
-         }
+               this.hex_hmac = function (k, d) {
+                 return rstr2hex(rstr_hmac(k, d), hexcase);
+               };

 
 

-         function addChoices(selection) {
-           var choices = selection.append('ul').attr('class', 'layer-list').selectAll('li').data(function (d) {
-             return d.choices || [];
-           }); // enter
+               this.b64_hmac = function (k, d) {
+                 return rstr2b64(rstr_hmac(k, d), b64pad);
+               };

 
 

-           var choicesEnter = choices.enter().append('li').attr('class', 'layer');
-           var labelEnter = choicesEnter.append('label');
-           labelEnter.append('input').attr('type', 'radio').attr('name', function (d) {
-             return d.id;
-           }).on('change', function (d3_event, d) {
-             var ul = this.parentNode.parentNode.parentNode;
-             ul.__data__.chosen = d.id;
-             choose(d3_event, ul, d);
-           });
-           labelEnter.append('span').html(function (d) {
-             return d.text;
-           }); // update
+               this.any_hmac = function (k, d, e) {
+                 return rstr2any(rstr_hmac(k, d), e);
+               };
+               /**
+                * Perform a simple self-test to see if the VM is working
+                * @return {String} Hexadecimal hash sample
+                */

 
 

-           choicesEnter.merge(choices).each(function (d) {
-             var ul = this.parentNode;

 
 

-             if (ul.__data__.chosen === d.id) {
-               choose(null, ul, d);
-             }
-           });
-         }
+               this.vm_test = function () {
+                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
+               };
+               /**
+                * Enable/disable uppercase hexadecimal returned string
+                * @param {Boolean}
+                * @return {Object} this
+                */

 
 

-         function choose(d3_event, ul, datum) {
-           if (d3_event) d3_event.preventDefault();
-           select(ul).selectAll('li').classed('active', function (d) {
-             return d === datum;
-           }).selectAll('input').property('checked', function (d) {
-             return d === datum;
-           });
-           var extent = geoExtent();
-           var entity;
-           entity = context.graph().hasEntity(datum.id);
-           if (entity) extent._extend(entity.extent(context.graph()));
-           datum.action();
-           entity = context.graph().hasEntity(datum.id);
-           if (entity) extent._extend(entity.extent(context.graph()));
-           zoomToEntity(datum.id, extent);
-         }

 
 

-         function zoomToEntity(id, extent) {
-           context.surface().selectAll('.hover').classed('hover', false);
-           var entity = context.graph().hasEntity(id);
+               this.setUpperCase = function (a) {
+                 if (typeof a === 'boolean') {
+                   hexcase = a;
+                 }

 
 

-           if (entity) {
-             if (extent) {
-               context.map().trimmedExtent(extent);
-             } else {
-               context.map().zoomToEase(entity);
-             }
+                 return this;
+               };
+               /**
+                * Defines a base64 pad string
+                * @param {String} Pad
+                * @return {Object} this
+                */

 
 

-             context.surface().selectAll(utilEntityOrMemberSelector([entity.id], context.graph())).classed('hover', true);
-           }
-         } // The conflict list should be an array of objects like:
-         // {
-         //     id: id,
-         //     name: entityName(local),
-         //     details: merge.conflicts(),
-         //     chosen: 1,
-         //     choices: [
-         //         choice(id, keepMine, forceLocal),
-         //         choice(id, keepTheirs, forceRemote)
-         //     ]
-         // }

 
 

+               this.setPad = function (a) {
+                 b64pad = a || b64pad;
+                 return this;
+               };
+               /**
+                * Defines a base64 pad string
+                * @param {Boolean}
+                * @return {Object} [this]
+                */

 
 

-         conflicts.conflictList = function (_) {
-           if (!arguments.length) return _conflictList;
-           _conflictList = _;
-           return conflicts;
-         };

 
 

-         conflicts.origChanges = function (_) {
-           if (!arguments.length) return _origChanges;
-           _origChanges = _;
-           return conflicts;
-         };
+               this.setUTF8 = function (a) {
+                 if (typeof a === 'boolean') {
+                   utf8 = a;
+                 }

 
 

-         conflicts.shownEntityIds = function () {
-           if (_conflictList && typeof _shownConflictIndex === 'number') {
-             return [_conflictList[_shownConflictIndex].id];
-           }
+                 return this;
+               }; // private methods

 
 

-           return [];
-         };
+               /**
+                * Calculate the MD5 of a raw string
+                */

 
 

-         return utilRebind(conflicts, dispatch$1, 'on');
-       }

 
 

-       function uiConfirm(selection) {
-         var modalSelection = uiModal(selection);
-         modalSelection.select('.modal').classed('modal-alert', true);
-         var section = modalSelection.select('.content');
-         section.append('div').attr('class', 'modal-section header');
-         section.append('div').attr('class', 'modal-section message-text');
-         var buttons = section.append('div').attr('class', 'modal-section buttons cf');
+               function rstr(s) {
+                 s = utf8 ? utf8Encode(s) : s;
+                 return binl2rstr(binl(rstr2binl(s), s.length * 8));
+               }
+               /**
+                * Calculate the HMAC-MD5, of a key and some data (raw strings)
+                */

 
 

-         modalSelection.okButton = function () {
-           buttons.append('button').attr('class', 'button ok-button action').on('click.confirm', function () {
-             modalSelection.remove();
-           }).html(_t.html('confirm.okay')).node().focus();
-           return modalSelection;
-         };

 
 

-         return modalSelection;
-       }
+               function rstr_hmac(key, data) {
+                 var bkey, ipad, opad, hash, i;
+                 key = utf8 ? utf8Encode(key) : key;
+                 data = utf8 ? utf8Encode(data) : data;
+                 bkey = rstr2binl(key);

 
 

-       function uiChangesetEditor(context) {
-         var dispatch$1 = dispatch('change');
-         var formFields = uiFormFields(context);
-         var commentCombo = uiCombobox(context, 'comment').caseSensitive(true);
+                 if (bkey.length > 16) {
+                   bkey = binl(bkey, key.length * 8);
+                 }

 
 

-         var _fieldsArr;
+                 ipad = Array(16), opad = Array(16);

 
 

-         var _tags;
+                 for (i = 0; i < 16; i += 1) {
+                   ipad[i] = bkey[i] ^ 0x36363636;
+                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
+                 }

 
 

-         var _changesetID;
+                 hash = binl(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
+                 return binl2rstr(binl(opad.concat(hash), 512 + 128));
+               }
+               /**
+                * Calculate the MD5 of an array of little-endian words, and a bit length.
+                */

 
 

-         function changesetEditor(selection) {
-           render(selection);
-         }

 
 

-         function render(selection) {
-           var initial = false;
+               function binl(x, len) {
+                 var i,
+                     olda,
+                     oldb,
+                     oldc,
+                     oldd,
+                     a = 1732584193,
+                     b = -271733879,
+                     c = -1732584194,
+                     d = 271733878;
+                 /* append padding */

 
 

-           if (!_fieldsArr) {
-             initial = true;
-             var presets = _mainPresetIndex;
-             _fieldsArr = [uiField(context, presets.field('comment'), null, {
-               show: true,
-               revert: false
-             }), uiField(context, presets.field('source'), null, {
-               show: false,
-               revert: false
-             }), uiField(context, presets.field('hashtags'), null, {
-               show: false,
-               revert: false
-             })];
+                 x[len >> 5] |= 0x80 << len % 32;
+                 x[(len + 64 >>> 9 << 4) + 14] = len;

 
 

-             _fieldsArr.forEach(function (field) {
-               field.on('change', function (t, onInput) {
-                 dispatch$1.call('change', field, undefined, t, onInput);
-               });
-             });
-           }
+                 for (i = 0; i < x.length; i += 16) {
+                   olda = a;
+                   oldb = b;
+                   oldc = c;
+                   oldd = d;
+                   a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
+                   d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
+                   c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
+                   b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
+                   a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
+                   d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
+                   c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
+                   b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
+                   a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
+                   d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
+                   c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
+                   b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
+                   a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
+                   d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
+                   c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
+                   b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
+                   a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
+                   d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
+                   c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
+                   b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
+                   a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
+                   d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
+                   c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
+                   b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
+                   a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
+                   d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
+                   c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
+                   b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
+                   a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
+                   d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
+                   c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
+                   b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
+                   a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
+                   d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
+                   c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
+                   b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
+                   a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
+                   d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
+                   c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
+                   b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
+                   a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
+                   d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
+                   c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
+                   b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
+                   a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
+                   d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
+                   c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
+                   b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
+                   a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
+                   d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
+                   c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
+                   b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
+                   a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
+                   d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
+                   c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
+                   b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
+                   a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
+                   d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
+                   c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
+                   b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
+                   a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
+                   d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
+                   c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
+                   b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
+                   a = safe_add(a, olda);
+                   b = safe_add(b, oldb);
+                   c = safe_add(c, oldc);
+                   d = safe_add(d, oldd);
+                 }

 
 

-           _fieldsArr.forEach(function (field) {
-             field.tags(_tags);
-           });
+                 return Array(a, b, c, d);
+               }
+               /**
+                * These functions implement the four basic operations the algorithm uses.
+                */

 
 

-           selection.call(formFields.fieldsArr(_fieldsArr));

 
 

-           if (initial) {
-             var commentField = selection.select('.form-field-comment textarea');
-             var commentNode = commentField.node();
+               function md5_cmn(q, a, b, x, s, t) {
+                 return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
+               }

 
 

-             if (commentNode) {
-               commentNode.focus();
-               commentNode.select();
-             } // trigger a 'blur' event so that comment field can be cleaned
-             // and checked for hashtags, even if retrieved from localstorage
+               function md5_ff(a, b, c, d, x, s, t) {
+                 return md5_cmn(b & c | ~b & d, a, b, x, s, t);
+               }

 
 

+               function md5_gg(a, b, c, d, x, s, t) {
+                 return md5_cmn(b & d | c & ~d, a, b, x, s, t);
+               }

 
 

-             utilTriggerEvent(commentField, 'blur');
-             var osm = context.connection();
+               function md5_hh(a, b, c, d, x, s, t) {
+                 return md5_cmn(b ^ c ^ d, a, b, x, s, t);
+               }

 
 

-             if (osm) {
-               osm.userChangesets(function (err, changesets) {
-                 if (err) return;
-                 var comments = changesets.map(function (changeset) {
-                   var comment = changeset.tags.comment;
-                   return comment ? {
-                     title: comment,
-                     value: comment
-                   } : null;
-                 }).filter(Boolean);
-                 commentField.call(commentCombo.data(utilArrayUniqBy(comments, 'title')));
-               });
-             }
-           } // Add warning if comment mentions Google
+               function md5_ii(a, b, c, d, x, s, t) {
+                 return md5_cmn(c ^ (b | ~d), a, b, x, s, t);
+               }
+             },

 
 

+             /**
+              * @member Hashes
+              * @class Hashes.SHA1
+              * @param {Object} [config]
+              * @constructor
+              *
+              * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined in FIPS 180-1
+              * Version 2.2 Copyright Paul Johnston 2000 - 2009.
+              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+              * See http://pajhome.org.uk/crypt/md5 for details.
+              */
+             SHA1: function SHA1(options) {
+               /**
+                * Private config properties. You may need to tweak these to be compatible with
+                * the server-side, but the defaults work in most cases.
+                * See {@link Hashes.MD5#method-setUpperCase} and {@link Hashes.SHA1#method-setUpperCase}
+                */
+               var hexcase = options && typeof options.uppercase === 'boolean' ? options.uppercase : false,
+                   // hexadecimal output case format. false - lowercase; true - uppercase
+               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',
+                   // base-64 pad character. Defaults to '=' for strict RFC compliance
+               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true; // enable/disable utf8 encoding
+               // public methods

 
 

-           var hasGoogle = _tags.comment.match(/google/i);
+               this.hex = function (s) {
+                 return rstr2hex(rstr(s), hexcase);
+               };

 
 

-           var commentWarning = selection.select('.form-field-comment').selectAll('.comment-warning').data(hasGoogle ? [0] : []);
-           commentWarning.exit().transition().duration(200).style('opacity', 0).remove();
-           var commentEnter = commentWarning.enter().insert('div', '.tag-reference-body').attr('class', 'field-warning comment-warning').style('opacity', 0);
-           commentEnter.append('a').attr('target', '_blank').call(svgIcon('#iD-icon-alert', 'inline')).attr('href', _t('commit.google_warning_link')).append('span').html(_t.html('commit.google_warning'));
-           commentEnter.transition().duration(200).style('opacity', 1);
-         }
+               this.b64 = function (s) {
+                 return rstr2b64(rstr(s), b64pad);
+               };

 
 

-         changesetEditor.tags = function (_) {
-           if (!arguments.length) return _tags;
-           _tags = _; // Don't reset _fieldsArr here.
+               this.any = function (s, e) {
+                 return rstr2any(rstr(s), e);
+               };

 
 

-           return changesetEditor;
-         };
+               this.raw = function (s) {
+                 return rstr(s);
+               };

 
 

-         changesetEditor.changesetID = function (_) {
-           if (!arguments.length) return _changesetID;
-           if (_changesetID === _) return changesetEditor;
-           _changesetID = _;
-           _fieldsArr = null;
-           return changesetEditor;
-         };
+               this.hex_hmac = function (k, d) {
+                 return rstr2hex(rstr_hmac(k, d));
+               };

 
 

-         return utilRebind(changesetEditor, dispatch$1, 'on');
-       }
+               this.b64_hmac = function (k, d) {
+                 return rstr2b64(rstr_hmac(k, d), b64pad);
+               };

 
 

-       function uiSectionChanges(context) {
-         var detected = utilDetect();
-         var _discardTags = {};
-         _mainFileFetcher.get('discarded').then(function (d) {
-           _discardTags = d;
-         })["catch"](function () {
-           /* ignore */
-         });
-         var section = uiSection('changes-list', context).label(function () {
-           var history = context.history();
-           var summary = history.difference().summary();
-           return _t('inspector.title_count', {
-             title: _t.html('commit.changes'),
-             count: summary.length
-           });
-         }).disclosureContent(renderDisclosureContent);
+               this.any_hmac = function (k, d, e) {
+                 return rstr2any(rstr_hmac(k, d), e);
+               };
+               /**
+                * Perform a simple self-test to see if the VM is working
+                * @return {String} Hexadecimal hash sample
+                * @public
+                */

 
 

-         function renderDisclosureContent(selection) {
-           var history = context.history();
-           var summary = history.difference().summary();
-           var container = selection.selectAll('.commit-section').data([0]);
-           var containerEnter = container.enter().append('div').attr('class', 'commit-section');
-           containerEnter.append('ul').attr('class', 'changeset-list');
-           container = containerEnter.merge(container);
-           var items = container.select('ul').selectAll('li').data(summary);
-           var itemsEnter = items.enter().append('li').attr('class', 'change-item');
-           var buttons = itemsEnter.append('button').on('mouseover', mouseover).on('mouseout', mouseout).on('click', click);
-           buttons.each(function (d) {
-             select(this).call(svgIcon('#iD-icon-' + d.entity.geometry(d.graph), 'pre-text ' + d.changeType));
-           });
-           buttons.append('span').attr('class', 'change-type').html(function (d) {
-             return _t.html('commit.' + d.changeType) + ' ';
-           });
-           buttons.append('strong').attr('class', 'entity-type').html(function (d) {
-             var matched = _mainPresetIndex.match(d.entity, d.graph);
-             return matched && matched.name() || utilDisplayType(d.entity.id);
-           });
-           buttons.append('span').attr('class', 'entity-name').html(function (d) {
-             var name = utilDisplayName(d.entity) || '',
-                 string = '';

 
 

-             if (name !== '') {
-               string += ':';
-             }
+               this.vm_test = function () {
+                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
+               };
+               /**
+                * @description Enable/disable uppercase hexadecimal returned string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-             return string += ' ' + name;
-           });
-           items = itemsEnter.merge(items); // Download changeset link

 
 

-           var changeset = new osmChangeset().update({
-             id: undefined
-           });
-           var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
-           delete changeset.id; // Export without chnageset_id
+               this.setUpperCase = function (a) {
+                 if (typeof a === 'boolean') {
+                   hexcase = a;
+                 }

 
 

-           var data = JXON.stringify(changeset.osmChangeJXON(changes));
-           var blob = new Blob([data], {
-             type: 'text/xml;charset=utf-8;'
-           });
-           var fileName = 'changes.osc';
-           var linkEnter = container.selectAll('.download-changes').data([0]).enter().append('a').attr('class', 'download-changes');
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {string} Pad
+                * @return {Object} this
+                * @public
+                */

 
 

-           if (detected.download) {
-             // All except IE11 and Edge
-             linkEnter // download the data as a file
-             .attr('href', window.URL.createObjectURL(blob)).attr('download', fileName);
-           } else {
-             // IE11 and Edge
-             linkEnter // open data uri in a new tab
-             .attr('target', '_blank').on('click.download', function () {
-               navigator.msSaveBlob(blob, fileName);
-             });
-           }

 
 

-           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').html(_t.html('commit.download_changes'));
+               this.setPad = function (a) {
+                 b64pad = a || b64pad;
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-           function mouseover(d) {
-             if (d.entity) {
-               context.surface().selectAll(utilEntityOrMemberSelector([d.entity.id], context.graph())).classed('hover', true);
-             }
-           }

 
 

-           function mouseout() {
-             context.surface().selectAll('.hover').classed('hover', false);
-           }
+               this.setUTF8 = function (a) {
+                 if (typeof a === 'boolean') {
+                   utf8 = a;
+                 }

 
 

-           function click(d3_event, change) {
-             if (change.changeType !== 'deleted') {
-               var entity = change.entity;
-               context.map().zoomToEase(entity);
-               context.surface().selectAll(utilEntityOrMemberSelector([entity.id], context.graph())).classed('hover', true);
-             }
-           }
-         }
+                 return this;
+               }; // private methods

 
 

-         return section;
-       }
+               /**
+                * Calculate the SHA-512 of a raw string
+                */

 
 

-       function uiCommitWarnings(context) {
-         function commitWarnings(selection) {
-           var issuesBySeverity = context.validator().getIssuesBySeverity({
-             what: 'edited',
-             where: 'all',
-             includeDisabledRules: true
-           });

 
 

-           for (var severity in issuesBySeverity) {
-             var issues = issuesBySeverity[severity];
-             var section = severity + '-section';
-             var issueItem = severity + '-item';
-             var container = selection.selectAll('.' + section).data(issues.length ? [0] : []);
-             container.exit().remove();
-             var containerEnter = container.enter().append('div').attr('class', 'modal-section ' + section + ' fillL2');
-             containerEnter.append('h3').html(severity === 'warning' ? _t.html('commit.warnings') : _t.html('commit.errors'));
-             containerEnter.append('ul').attr('class', 'changeset-list');
-             container = containerEnter.merge(container);
-             var items = container.select('ul').selectAll('li').data(issues, function (d) {
-               return d.id;
-             });
-             items.exit().remove();
-             var itemsEnter = items.enter().append('li').attr('class', issueItem);
-             var buttons = itemsEnter.append('button').on('mouseover', function (d3_event, d) {
-               if (d.entityIds) {
-                 context.surface().selectAll(utilEntityOrMemberSelector(d.entityIds, context.graph())).classed('hover', true);
+               function rstr(s) {
+                 s = utf8 ? utf8Encode(s) : s;
+                 return binb2rstr(binb(rstr2binb(s), s.length * 8));

                }
                }

-             }).on('mouseout', function () {
-               context.surface().selectAll('.hover').classed('hover', false);
-             }).on('click', function (d3_event, d) {
-               context.validator().focusIssue(d);
-             });
-             buttons.call(svgIcon('#iD-icon-alert', 'pre-text'));
-             buttons.append('strong').attr('class', 'issue-message');
-             buttons.filter(function (d) {
-               return d.tooltip;
-             }).call(uiTooltip().title(function (d) {
-               return d.tooltip;
-             }).placement('top'));
-             items = itemsEnter.merge(items);
-             items.selectAll('.issue-message').html(function (d) {
-               return d.message(context);
-             });
-           }
-         }
+               /**
+                * Calculate the HMAC-SHA1 of a key and some data (raw strings)
+                */

 
 

-         return commitWarnings;
-       }

 
 

-       var readOnlyTags = [/^changesets_count$/, /^created_by$/, /^ideditor:/, /^imagery_used$/, /^host$/, /^locale$/, /^warnings:/, /^resolved:/, /^closed:note$/, /^closed:keepright$/, /^closed:improveosm:/, /^closed:osmose:/]; // treat most punctuation (except -, _, +, &) as hashtag delimiters - #4398
-       // from https://stackoverflow.com/a/25575009
+               function rstr_hmac(key, data) {
+                 var bkey, ipad, opad, i, hash;
+                 key = utf8 ? utf8Encode(key) : key;
+                 data = utf8 ? utf8Encode(data) : data;
+                 bkey = rstr2binb(key);

 
 

-       var hashtagRegex = /(#[^\u2000-\u206F\u2E00-\u2E7F\s\\'!"#$%()*,.\/:;<=>?@\[\]^`{|}~]+)/g;
-       function uiCommit(context) {
-         var dispatch$1 = dispatch('cancel');
+                 if (bkey.length > 16) {
+                   bkey = binb(bkey, key.length * 8);
+                 }

 
 

-         var _userDetails;
+                 ipad = Array(16), opad = Array(16);

 
 

-         var _selection;
+                 for (i = 0; i < 16; i += 1) {
+                   ipad[i] = bkey[i] ^ 0x36363636;
+                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
+                 }

 
 

-         var changesetEditor = uiChangesetEditor(context).on('change', changeTags);
-         var rawTagEditor = uiSectionRawTagEditor('changeset-tag-editor', context).on('change', changeTags).readOnlyTags(readOnlyTags);
-         var commitChanges = uiSectionChanges(context);
-         var commitWarnings = uiCommitWarnings(context);
+                 hash = binb(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
+                 return binb2rstr(binb(opad.concat(hash), 512 + 160));
+               }
+               /**
+                * Calculate the SHA-1 of an array of big-endian words, and a bit length
+                */

 
 

-         function commit(selection) {
-           _selection = selection; // Initialize changeset if one does not exist yet.

 
 

-           if (!context.changeset) initChangeset();
-           loadDerivedChangesetTags();
-           selection.call(render);
-         }
+               function binb(x, len) {
+                 var i,
+                     j,
+                     t,
+                     olda,
+                     oldb,
+                     oldc,
+                     oldd,
+                     olde,
+                     w = Array(80),
+                     a = 1732584193,
+                     b = -271733879,
+                     c = -1732584194,
+                     d = 271733878,
+                     e = -1009589776;
+                 /* append padding */

 
 

-         function initChangeset() {
-           // expire stored comment, hashtags, source after cutoff datetime - #3947 #4899
-           var commentDate = +corePreferences('commentDate') || 0;
-           var currDate = Date.now();
-           var cutoff = 2 * 86400 * 1000; // 2 days
+                 x[len >> 5] |= 0x80 << 24 - len % 32;
+                 x[(len + 64 >> 9 << 4) + 15] = len;

 
 

-           if (commentDate > currDate || currDate - commentDate > cutoff) {
-             corePreferences('comment', null);
-             corePreferences('hashtags', null);
-             corePreferences('source', null);
-           } // load in explicitly-set values, if any
+                 for (i = 0; i < x.length; i += 16) {
+                   olda = a;
+                   oldb = b;
+                   oldc = c;
+                   oldd = d;
+                   olde = e;

 
 

+                   for (j = 0; j < 80; j += 1) {
+                     if (j < 16) {
+                       w[j] = x[i + j];
+                     } else {
+                       w[j] = bit_rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
+                     }

 
 

-           if (context.defaultChangesetComment()) {
-             corePreferences('comment', context.defaultChangesetComment());
-             corePreferences('commentDate', Date.now());
-           }
+                     t = safe_add(safe_add(bit_rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
+                     e = d;
+                     d = c;
+                     c = bit_rol(b, 30);
+                     b = a;
+                     a = t;
+                   }

 
 

-           if (context.defaultChangesetSource()) {
-             corePreferences('source', context.defaultChangesetSource());
-             corePreferences('commentDate', Date.now());
-           }
+                   a = safe_add(a, olda);
+                   b = safe_add(b, oldb);
+                   c = safe_add(c, oldc);
+                   d = safe_add(d, oldd);
+                   e = safe_add(e, olde);
+                 }

 
 

-           if (context.defaultChangesetHashtags()) {
-             corePreferences('hashtags', context.defaultChangesetHashtags());
-             corePreferences('commentDate', Date.now());
-           }
+                 return Array(a, b, c, d, e);
+               }
+               /**
+                * Perform the appropriate triplet combination function for the current
+                * iteration
+                */

 
 

-           var detected = utilDetect();
-           var tags = {
-             comment: corePreferences('comment') || '',
-             created_by: context.cleanTagValue('iD ' + context.version),
-             host: context.cleanTagValue(detected.host),
-             locale: context.cleanTagValue(_mainLocalizer.localeCode())
-           }; // call findHashtags initially - this will remove stored
-           // hashtags if any hashtags are found in the comment - #4304

 
 

-           findHashtags(tags, true);
-           var hashtags = corePreferences('hashtags');
+               function sha1_ft(t, b, c, d) {
+                 if (t < 20) {
+                   return b & c | ~b & d;
+                 }

 
 

-           if (hashtags) {
-             tags.hashtags = hashtags;
-           }
+                 if (t < 40) {
+                   return b ^ c ^ d;
+                 }

 
 

-           var source = corePreferences('source');
+                 if (t < 60) {
+                   return b & c | b & d | c & d;
+                 }

 
 

-           if (source) {
-             tags.source = source;
-           }
+                 return b ^ c ^ d;
+               }
+               /**
+                * Determine the appropriate additive constant for the current iteration
+                */

 
 

-           var photoOverlaysUsed = context.history().photoOverlaysUsed();

 
 

-           if (photoOverlaysUsed.length) {
-             var sources = (tags.source || '').split(';'); // include this tag for any photo layer
+               function sha1_kt(t) {
+                 return t < 20 ? 1518500249 : t < 40 ? 1859775393 : t < 60 ? -1894007588 : -899497514;
+               }
+             },

 
 

-             if (sources.indexOf('streetlevel imagery') === -1) {
-               sources.push('streetlevel imagery');
-             } // add the photo overlays used during editing as sources
+             /**
+              * @class Hashes.SHA256
+              * @param {config}
+              *
+              * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined in FIPS 180-2
+              * Version 2.2 Copyright Angel Marin, Paul Johnston 2000 - 2009.
+              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+              * See http://pajhome.org.uk/crypt/md5 for details.
+              * Also http://anmar.eu.org/projects/jssha2/
+              */
+             SHA256: function SHA256(options) {
+               /**
+                * Private properties configuration variables. You may need to tweak these to be compatible with
+                * the server-side, but the defaults work in most cases.
+                * @see this.setUpperCase() method
+                * @see this.setPad() method
+                */
+               options && typeof options.uppercase === 'boolean' ? options.uppercase : false;
+                   var // hexadecimal output case format. false - lowercase; true - uppercase  */
+               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',

 
 

+               /* base-64 pad character. Default '=' for strict RFC compliance   */
+               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,

 
 

-             photoOverlaysUsed.forEach(function (photoOverlay) {
-               if (sources.indexOf(photoOverlay) === -1) {
-                 sources.push(photoOverlay);
-               }
-             });
-             tags.source = context.cleanTagValue(sources.join(';'));
-           }
+               /* enable/disable utf8 encoding */
+               sha256_K;
+               /* privileged (public) methods */

 
 

-           context.changeset = new osmChangeset({
-             tags: tags
-           });
-         } // Calculates read-only metadata tags based on the user's editing session and applies
-         // them to the changeset.
+               this.hex = function (s) {
+                 return rstr2hex(rstr(s, utf8));
+               };

 
 

+               this.b64 = function (s) {
+                 return rstr2b64(rstr(s, utf8), b64pad);
+               };

 
 

-         function loadDerivedChangesetTags() {
-           var osm = context.connection();
-           if (!osm) return;
-           var tags = Object.assign({}, context.changeset.tags); // shallow copy
-           // assign tags for imagery used
+               this.any = function (s, e) {
+                 return rstr2any(rstr(s, utf8), e);
+               };

 
 

-           var imageryUsed = context.cleanTagValue(context.history().imageryUsed().join(';'));
-           tags.imagery_used = imageryUsed || 'None'; // assign tags for closed issues and notes
+               this.raw = function (s) {
+                 return rstr(s, utf8);
+               };

 
 

-           var osmClosed = osm.getClosedIDs();
-           var itemType;
+               this.hex_hmac = function (k, d) {
+                 return rstr2hex(rstr_hmac(k, d));
+               };

 
 

-           if (osmClosed.length) {
-             tags['closed:note'] = context.cleanTagValue(osmClosed.join(';'));
-           }
+               this.b64_hmac = function (k, d) {
+                 return rstr2b64(rstr_hmac(k, d), b64pad);
+               };

 
 

-           if (services.keepRight) {
-             var krClosed = services.keepRight.getClosedIDs();
+               this.any_hmac = function (k, d, e) {
+                 return rstr2any(rstr_hmac(k, d), e);
+               };
+               /**
+                * Perform a simple self-test to see if the VM is working
+                * @return {String} Hexadecimal hash sample
+                * @public
+                */

 
 

-             if (krClosed.length) {
-               tags['closed:keepright'] = context.cleanTagValue(krClosed.join(';'));
-             }
-           }

 
 

-           if (services.improveOSM) {
-             var iOsmClosed = services.improveOSM.getClosedCounts();
+               this.vm_test = function () {
+                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
+               };
+               /**
+                * Enable/disable uppercase hexadecimal returned string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-             for (itemType in iOsmClosed) {
-               tags['closed:improveosm:' + itemType] = context.cleanTagValue(iOsmClosed[itemType].toString());
-             }
-           }

 
 

-           if (services.osmose) {
-             var osmoseClosed = services.osmose.getClosedCounts();
+               this.setUpperCase = function (a) {

 
 

-             for (itemType in osmoseClosed) {
-               tags['closed:osmose:' + itemType] = context.cleanTagValue(osmoseClosed[itemType].toString());
-             }
-           } // remove existing issue counts
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {string} Pad
+                * @return {Object} this
+                * @public
+                */

 
 
 
 

-           for (var key in tags) {
-             if (key.match(/(^warnings:)|(^resolved:)/)) {
-               delete tags[key];
-             }
-           }
+               this.setPad = function (a) {
+                 b64pad = a || b64pad;
+                 return this;
+               };
+               /**
+                * Defines a base64 pad string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-           function addIssueCounts(issues, prefix) {
-             var issuesByType = utilArrayGroupBy(issues, 'type');

 
 

-             for (var issueType in issuesByType) {
-               var issuesOfType = issuesByType[issueType];
+               this.setUTF8 = function (a) {
+                 if (typeof a === 'boolean') {
+                   utf8 = a;
+                 }

 
 

-               if (issuesOfType[0].subtype) {
-                 var issuesBySubtype = utilArrayGroupBy(issuesOfType, 'subtype');
+                 return this;
+               }; // private methods

 
 

-                 for (var issueSubtype in issuesBySubtype) {
-                   var issuesOfSubtype = issuesBySubtype[issueSubtype];
-                   tags[prefix + ':' + issueType + ':' + issueSubtype] = context.cleanTagValue(issuesOfSubtype.length.toString());
-                 }
-               } else {
-                 tags[prefix + ':' + issueType] = context.cleanTagValue(issuesOfType.length.toString());
-               }
-             }
-           } // add counts of warnings generated by the user's edits
+               /**
+                * Calculate the SHA-512 of a raw string
+                */

 
 
 
 

-           var warnings = context.validator().getIssuesBySeverity({
-             what: 'edited',
-             where: 'all',
-             includeIgnored: true,
-             includeDisabledRules: true
-           }).warning;
-           addIssueCounts(warnings, 'warnings'); // add counts of issues resolved by the user's edits
+               function rstr(s, utf8) {
+                 s = utf8 ? utf8Encode(s) : s;
+                 return binb2rstr(binb(rstr2binb(s), s.length * 8));
+               }
+               /**
+                * Calculate the HMAC-sha256 of a key and some data (raw strings)
+                */

 
 

-           var resolvedIssues = context.validator().getResolvedIssues();
-           addIssueCounts(resolvedIssues, 'resolved');
-           context.changeset = context.changeset.update({
-             tags: tags
-           });
-         }

 
 

-         function render(selection) {
-           var osm = context.connection();
-           if (!osm) return;
-           var header = selection.selectAll('.header').data([0]);
-           var headerTitle = header.enter().append('div').attr('class', 'header fillL');
-           headerTitle.append('div').append('h3').html(_t.html('commit.title'));
-           headerTitle.append('button').attr('class', 'close').on('click', function () {
-             dispatch$1.call('cancel', this);
-           }).call(svgIcon('#iD-icon-close'));
-           var body = selection.selectAll('.body').data([0]);
-           body = body.enter().append('div').attr('class', 'body').merge(body); // Changeset Section
+               function rstr_hmac(key, data) {
+                 key = utf8 ? utf8Encode(key) : key;
+                 data = utf8 ? utf8Encode(data) : data;
+                 var hash,
+                     i = 0,
+                     bkey = rstr2binb(key),
+                     ipad = Array(16),
+                     opad = Array(16);

 
 

-           var changesetSection = body.selectAll('.changeset-editor').data([0]);
-           changesetSection = changesetSection.enter().append('div').attr('class', 'modal-section changeset-editor').merge(changesetSection);
-           changesetSection.call(changesetEditor.changesetID(context.changeset.id).tags(context.changeset.tags)); // Warnings
+                 if (bkey.length > 16) {
+                   bkey = binb(bkey, key.length * 8);
+                 }

 
 

-           body.call(commitWarnings); // Upload Explanation
+                 for (; i < 16; i += 1) {
+                   ipad[i] = bkey[i] ^ 0x36363636;
+                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
+                 }

 
 

-           var saveSection = body.selectAll('.save-section').data([0]);
-           saveSection = saveSection.enter().append('div').attr('class', 'modal-section save-section fillL').merge(saveSection);
-           var prose = saveSection.selectAll('.commit-info').data([0]);
+                 hash = binb(ipad.concat(rstr2binb(data)), 512 + data.length * 8);
+                 return binb2rstr(binb(opad.concat(hash), 512 + 256));
+               }
+               /*
+                * Main sha256 function, with its support functions
+                */

 
 

-           if (prose.enter().size()) {
-             // first time, make sure to update user details in prose
-             _userDetails = null;
-           }

 
 

-           prose = prose.enter().append('p').attr('class', 'commit-info').html(_t.html('commit.upload_explanation')).merge(prose); // always check if this has changed, but only update prose.html()
-           // if needed, because it can trigger a style recalculation
+               function sha256_S(X, n) {
+                 return X >>> n | X << 32 - n;
+               }

 
 

-           osm.userDetails(function (err, user) {
-             if (err) return;
-             if (_userDetails === user) return; // no change
+               function sha256_R(X, n) {
+                 return X >>> n;
+               }

 
 

-             _userDetails = user;
-             var userLink = select(document.createElement('div'));
+               function sha256_Ch(x, y, z) {
+                 return x & y ^ ~x & z;
+               }

 
 

-             if (user.image_url) {
-               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
-             }
+               function sha256_Maj(x, y, z) {
+                 return x & y ^ x & z ^ y & z;
+               }

 
 

-             userLink.append('a').attr('class', 'user-info').html(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
-             prose.html(_t.html('commit.upload_explanation_with_user', {
-               user: userLink.html()
-             }));
-           }); // Request Review
+               function sha256_Sigma0256(x) {
+                 return sha256_S(x, 2) ^ sha256_S(x, 13) ^ sha256_S(x, 22);
+               }

 
 

-           var requestReview = saveSection.selectAll('.request-review').data([0]); // Enter
+               function sha256_Sigma1256(x) {
+                 return sha256_S(x, 6) ^ sha256_S(x, 11) ^ sha256_S(x, 25);
+               }

 
 

-           var requestReviewEnter = requestReview.enter().append('div').attr('class', 'request-review');
-           var requestReviewDomId = utilUniqueDomId('commit-input-request-review');
-           var labelEnter = requestReviewEnter.append('label').attr('for', requestReviewDomId);
-           labelEnter.append('input').attr('type', 'checkbox').attr('id', requestReviewDomId);
-           labelEnter.append('span').html(_t.html('commit.request_review')); // Update
+               function sha256_Gamma0256(x) {
+                 return sha256_S(x, 7) ^ sha256_S(x, 18) ^ sha256_R(x, 3);
+               }

 
 

-           requestReview = requestReview.merge(requestReviewEnter);
-           var requestReviewInput = requestReview.selectAll('input').property('checked', isReviewRequested(context.changeset.tags)).on('change', toggleRequestReview); // Buttons
+               function sha256_Gamma1256(x) {
+                 return sha256_S(x, 17) ^ sha256_S(x, 19) ^ sha256_R(x, 10);
+               }

 
 

-           var buttonSection = saveSection.selectAll('.buttons').data([0]); // enter
+               sha256_K = [1116352408, 1899447441, -1245643825, -373957723, 961987163, 1508970993, -1841331548, -1424204075, -670586216, 310598401, 607225278, 1426881987, 1925078388, -2132889090, -1680079193, -1046744716, -459576895, -272742522, 264347078, 604807628, 770255983, 1249150122, 1555081692, 1996064986, -1740746414, -1473132947, -1341970488, -1084653625, -958395405, -710438585, 113926993, 338241895, 666307205, 773529912, 1294757372, 1396182291, 1695183700, 1986661051, -2117940946, -1838011259, -1564481375, -1474664885, -1035236496, -949202525, -778901479, -694614492, -200395387, 275423344, 430227734, 506948616, 659060556, 883997877, 958139571, 1322822218, 1537002063, 1747873779, 1955562222, 2024104815, -2067236844, -1933114872, -1866530822, -1538233109, -1090935817, -965641998];

 
 

-           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons fillL');
-           buttonEnter.append('button').attr('class', 'secondary-action button cancel-button').append('span').attr('class', 'label').html(_t.html('commit.cancel'));
-           var uploadButton = buttonEnter.append('button').attr('class', 'action button save-button');
-           uploadButton.append('span').attr('class', 'label').html(_t.html('commit.save'));
-           var uploadBlockerTooltipText = getUploadBlockerMessage(); // update
+               function binb(m, l) {
+                 var HASH = [1779033703, -1150833019, 1013904242, -1521486534, 1359893119, -1694144372, 528734635, 1541459225];
+                 var W = new Array(64);
+                 var a, b, c, d, e, f, g, h;
+                 var i, j, T1, T2;
+                 /* append padding */

 
 

-           buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.selectAll('.cancel-button').on('click.cancel', function () {
-             dispatch$1.call('cancel', this);
-           });
-           buttonSection.selectAll('.save-button').classed('disabled', uploadBlockerTooltipText !== null).on('click.save', function () {
-             if (!select(this).classed('disabled')) {
-               this.blur(); // avoid keeping focus on the button - #4641
+                 m[l >> 5] |= 0x80 << 24 - l % 32;
+                 m[(l + 64 >> 9 << 4) + 15] = l;

 
 

-               for (var key in context.changeset.tags) {
-                 // remove any empty keys before upload
-                 if (!key) delete context.changeset.tags[key];
-               }
+                 for (i = 0; i < m.length; i += 16) {
+                   a = HASH[0];
+                   b = HASH[1];
+                   c = HASH[2];
+                   d = HASH[3];
+                   e = HASH[4];
+                   f = HASH[5];
+                   g = HASH[6];
+                   h = HASH[7];

 
 

-               context.uploader().save(context.changeset);
-             }
-           }); // remove any existing tooltip
+                   for (j = 0; j < 64; j += 1) {
+                     if (j < 16) {
+                       W[j] = m[j + i];
+                     } else {
+                       W[j] = safe_add(safe_add(safe_add(sha256_Gamma1256(W[j - 2]), W[j - 7]), sha256_Gamma0256(W[j - 15])), W[j - 16]);
+                     }

 
 

-           uiTooltip().destroyAny(buttonSection.selectAll('.save-button'));
+                     T1 = safe_add(safe_add(safe_add(safe_add(h, sha256_Sigma1256(e)), sha256_Ch(e, f, g)), sha256_K[j]), W[j]);
+                     T2 = safe_add(sha256_Sigma0256(a), sha256_Maj(a, b, c));
+                     h = g;
+                     g = f;
+                     f = e;
+                     e = safe_add(d, T1);
+                     d = c;
+                     c = b;
+                     b = a;
+                     a = safe_add(T1, T2);
+                   }

 
 

-           if (uploadBlockerTooltipText) {
-             buttonSection.selectAll('.save-button').call(uiTooltip().title(uploadBlockerTooltipText).placement('top'));
-           } // Raw Tag Editor
+                   HASH[0] = safe_add(a, HASH[0]);
+                   HASH[1] = safe_add(b, HASH[1]);
+                   HASH[2] = safe_add(c, HASH[2]);
+                   HASH[3] = safe_add(d, HASH[3]);
+                   HASH[4] = safe_add(e, HASH[4]);
+                   HASH[5] = safe_add(f, HASH[5]);
+                   HASH[6] = safe_add(g, HASH[6]);
+                   HASH[7] = safe_add(h, HASH[7]);
+                 }

 
 

+                 return HASH;
+               }
+             },

 
 

-           var tagSection = body.selectAll('.tag-section.raw-tag-editor').data([0]);
-           tagSection = tagSection.enter().append('div').attr('class', 'modal-section tag-section raw-tag-editor').merge(tagSection);
-           tagSection.call(rawTagEditor.tags(Object.assign({}, context.changeset.tags)) // shallow copy
-           .render);
-           var changesSection = body.selectAll('.commit-changes-section').data([0]);
-           changesSection = changesSection.enter().append('div').attr('class', 'modal-section commit-changes-section').merge(changesSection); // Change summary
+             /**
+              * @class Hashes.SHA512
+              * @param {config}
+              *
+              * A JavaScript implementation of the Secure Hash Algorithm, SHA-512, as defined in FIPS 180-2
+              * Version 2.2 Copyright Anonymous Contributor, Paul Johnston 2000 - 2009.
+              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+              * See http://pajhome.org.uk/crypt/md5 for details.
+              */
+             SHA512: function SHA512(options) {
+               /**
+                * Private properties configuration variables. You may need to tweak these to be compatible with
+                * the server-side, but the defaults work in most cases.
+                * @see this.setUpperCase() method
+                * @see this.setPad() method
+                */
+               options && typeof options.uppercase === 'boolean' ? options.uppercase : false;

 
 

-           changesSection.call(commitChanges.render);
+               var /* hexadecimal output case format. false - lowercase; true - uppercase  */
+               b64pad = options && typeof options.pad === 'string' ? options.pad : '=',

 
 

-           function toggleRequestReview() {
-             var rr = requestReviewInput.property('checked');
-             updateChangeset({
-               review_requested: rr ? 'yes' : undefined
-             });
-             tagSection.call(rawTagEditor.tags(Object.assign({}, context.changeset.tags)) // shallow copy
-             .render);
-           }
-         }
+               /* base-64 pad character. Default '=' for strict RFC compliance   */
+               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,

 
 

-         function getUploadBlockerMessage() {
-           var errors = context.validator().getIssuesBySeverity({
-             what: 'edited',
-             where: 'all'
-           }).error;
+               /* enable/disable utf8 encoding */
+               sha512_k;
+               /* privileged (public) methods */

 
 

-           if (errors.length) {
-             return _t('commit.outstanding_errors_message', {
-               count: errors.length
-             });
-           } else {
-             var hasChangesetComment = context.changeset && context.changeset.tags.comment && context.changeset.tags.comment.trim().length;
+               this.hex = function (s) {
+                 return rstr2hex(rstr(s));
+               };

 
 

-             if (!hasChangesetComment) {
-               return _t('commit.comment_needed_message');
-             }
-           }
+               this.b64 = function (s) {
+                 return rstr2b64(rstr(s), b64pad);
+               };

 
 

-           return null;
-         }
+               this.any = function (s, e) {
+                 return rstr2any(rstr(s), e);
+               };

 
 

-         function changeTags(_, changed, onInput) {
-           if (changed.hasOwnProperty('comment')) {
-             if (changed.comment === undefined) {
-               changed.comment = '';
-             }
+               this.raw = function (s) {
+                 return rstr(s);
+               };

 
 

-             if (!onInput) {
-               corePreferences('comment', changed.comment);
-               corePreferences('commentDate', Date.now());
-             }
-           }
+               this.hex_hmac = function (k, d) {
+                 return rstr2hex(rstr_hmac(k, d));
+               };

 
 

-           if (changed.hasOwnProperty('source')) {
-             if (changed.source === undefined) {
-               corePreferences('source', null);
-             } else if (!onInput) {
-               corePreferences('source', changed.source);
-               corePreferences('commentDate', Date.now());
-             }
-           } // no need to update `prefs` for `hashtags` here since it's done in `updateChangeset`
+               this.b64_hmac = function (k, d) {
+                 return rstr2b64(rstr_hmac(k, d), b64pad);
+               };

 
 

+               this.any_hmac = function (k, d, e) {
+                 return rstr2any(rstr_hmac(k, d), e);
+               };
+               /**
+                * Perform a simple self-test to see if the VM is working
+                * @return {String} Hexadecimal hash sample
+                * @public
+                */

 
 

-           updateChangeset(changed, onInput);

 
 

-           if (_selection) {
-             _selection.call(render);
-           }
-         }
+               this.vm_test = function () {
+                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
+               };
+               /**
+                * @description Enable/disable uppercase hexadecimal returned string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-         function findHashtags(tags, commentOnly) {
-           var detectedHashtags = commentHashtags();

 
 

-           if (detectedHashtags.length) {
-             // always remove stored hashtags if there are hashtags in the comment - #4304
-             corePreferences('hashtags', null);
-           }
+               this.setUpperCase = function (a) {

 
 

-           if (!detectedHashtags.length || !commentOnly) {
-             detectedHashtags = detectedHashtags.concat(hashtagHashtags());
-           }
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {string} Pad
+                * @return {Object} this
+                * @public
+                */

 
 

-           var allLowerCase = new Set();
-           return detectedHashtags.filter(function (hashtag) {
-             // Compare tags as lowercase strings, but keep original case tags
-             var lowerCase = hashtag.toLowerCase();

 
 

-             if (!allLowerCase.has(lowerCase)) {
-               allLowerCase.add(lowerCase);
-               return true;
-             }
+               this.setPad = function (a) {
+                 b64pad = a || b64pad;
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-             return false;
-           }); // Extract hashtags from `comment`

 
 

-           function commentHashtags() {
-             var matches = (tags.comment || '').replace(/http\S*/g, '') // drop anything that looks like a URL - #4289
-             .match(hashtagRegex);
-             return matches || [];
-           } // Extract and clean hashtags from `hashtags`
+               this.setUTF8 = function (a) {
+                 if (typeof a === 'boolean') {
+                   utf8 = a;
+                 }

 
 

+                 return this;
+               };
+               /* private methods */

 
 

-           function hashtagHashtags() {
-             var matches = (tags.hashtags || '').split(/[,;\s]+/).map(function (s) {
-               if (s[0] !== '#') {
-                 s = '#' + s;
-               } // prepend '#'
+               /**
+                * Calculate the SHA-512 of a raw string
+                */

 
 
 
 

-               var matched = s.match(hashtagRegex);
-               return matched && matched[0];
-             }).filter(Boolean); // exclude falsy
+               function rstr(s) {
+                 s = utf8 ? utf8Encode(s) : s;
+                 return binb2rstr(binb(rstr2binb(s), s.length * 8));
+               }
+               /*
+                * Calculate the HMAC-SHA-512 of a key and some data (raw strings)
+                */

 
 

-             return matches || [];
-           }
-         }

 
 

-         function isReviewRequested(tags) {
-           var rr = tags.review_requested;
-           if (rr === undefined) return false;
-           rr = rr.trim().toLowerCase();
-           return !(rr === '' || rr === 'no');
-         }
+               function rstr_hmac(key, data) {
+                 key = utf8 ? utf8Encode(key) : key;
+                 data = utf8 ? utf8Encode(data) : data;
+                 var hash,
+                     i = 0,
+                     bkey = rstr2binb(key),
+                     ipad = Array(32),
+                     opad = Array(32);

 
 

-         function updateChangeset(changed, onInput) {
-           var tags = Object.assign({}, context.changeset.tags); // shallow copy
+                 if (bkey.length > 32) {
+                   bkey = binb(bkey, key.length * 8);
+                 }

 
 

-           Object.keys(changed).forEach(function (k) {
-             var v = changed[k];
-             k = context.cleanTagKey(k);
-             if (readOnlyTags.indexOf(k) !== -1) return;
+                 for (; i < 32; i += 1) {
+                   ipad[i] = bkey[i] ^ 0x36363636;
+                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
+                 }

 
 

-             if (v === undefined) {
-               delete tags[k];
-             } else if (onInput) {
-               tags[k] = v;
-             } else {
-               tags[k] = context.cleanTagValue(v);
-             }
-           });
+                 hash = binb(ipad.concat(rstr2binb(data)), 1024 + data.length * 8);
+                 return binb2rstr(binb(opad.concat(hash), 1024 + 512));
+               }
+               /**
+                * Calculate the SHA-512 of an array of big-endian dwords, and a bit length
+                */

 
 

-           if (!onInput) {
-             // when changing the comment, override hashtags with any found in comment.
-             var commentOnly = changed.hasOwnProperty('comment') && changed.comment !== '';
-             var arr = findHashtags(tags, commentOnly);

 
 

-             if (arr.length) {
-               tags.hashtags = context.cleanTagValue(arr.join(';'));
-               corePreferences('hashtags', tags.hashtags);
-             } else {
-               delete tags.hashtags;
-               corePreferences('hashtags', null);
-             }
-           } // always update userdetails, just in case user reauthenticates as someone else
+               function binb(x, len) {
+                 var j,
+                     i,
+                     l,
+                     W = new Array(80),
+                     hash = new Array(16),
+                     //Initial hash values
+                 H = [new int64(0x6a09e667, -205731576), new int64(-1150833019, -2067093701), new int64(0x3c6ef372, -23791573), new int64(-1521486534, 0x5f1d36f1), new int64(0x510e527f, -1377402159), new int64(-1694144372, 0x2b3e6c1f), new int64(0x1f83d9ab, -79577749), new int64(0x5be0cd19, 0x137e2179)],
+                     T1 = new int64(0, 0),
+                     T2 = new int64(0, 0),
+                     a = new int64(0, 0),
+                     b = new int64(0, 0),
+                     c = new int64(0, 0),
+                     d = new int64(0, 0),
+                     e = new int64(0, 0),
+                     f = new int64(0, 0),
+                     g = new int64(0, 0),
+                     h = new int64(0, 0),
+                     //Temporary variables not specified by the document
+                 s0 = new int64(0, 0),
+                     s1 = new int64(0, 0),
+                     Ch = new int64(0, 0),
+                     Maj = new int64(0, 0),
+                     r1 = new int64(0, 0),
+                     r2 = new int64(0, 0),
+                     r3 = new int64(0, 0);

 
 

+                 if (sha512_k === undefined) {
+                   //SHA512 constants
+                   sha512_k = [new int64(0x428a2f98, -685199838), new int64(0x71374491, 0x23ef65cd), new int64(-1245643825, -330482897), new int64(-373957723, -2121671748), new int64(0x3956c25b, -213338824), new int64(0x59f111f1, -1241133031), new int64(-1841331548, -1357295717), new int64(-1424204075, -630357736), new int64(-670586216, -1560083902), new int64(0x12835b01, 0x45706fbe), new int64(0x243185be, 0x4ee4b28c), new int64(0x550c7dc3, -704662302), new int64(0x72be5d74, -226784913), new int64(-2132889090, 0x3b1696b1), new int64(-1680079193, 0x25c71235), new int64(-1046744716, -815192428), new int64(-459576895, -1628353838), new int64(-272742522, 0x384f25e3), new int64(0xfc19dc6, -1953704523), new int64(0x240ca1cc, 0x77ac9c65), new int64(0x2de92c6f, 0x592b0275), new int64(0x4a7484aa, 0x6ea6e483), new int64(0x5cb0a9dc, -1119749164), new int64(0x76f988da, -2096016459), new int64(-1740746414, -295247957), new int64(-1473132947, 0x2db43210), new int64(-1341970488, -1728372417), new int64(-1084653625, -1091629340), new int64(-958395405, 0x3da88fc2), new int64(-710438585, -1828018395), new int64(0x6ca6351, -536640913), new int64(0x14292967, 0xa0e6e70), new int64(0x27b70a85, 0x46d22ffc), new int64(0x2e1b2138, 0x5c26c926), new int64(0x4d2c6dfc, 0x5ac42aed), new int64(0x53380d13, -1651133473), new int64(0x650a7354, -1951439906), new int64(0x766a0abb, 0x3c77b2a8), new int64(-2117940946, 0x47edaee6), new int64(-1838011259, 0x1482353b), new int64(-1564481375, 0x4cf10364), new int64(-1474664885, -1136513023), new int64(-1035236496, -789014639), new int64(-949202525, 0x654be30), new int64(-778901479, -688958952), new int64(-694614492, 0x5565a910), new int64(-200395387, 0x5771202a), new int64(0x106aa070, 0x32bbd1b8), new int64(0x19a4c116, -1194143544), new int64(0x1e376c08, 0x5141ab53), new int64(0x2748774c, -544281703), new int64(0x34b0bcb5, -509917016), new int64(0x391c0cb3, -976659869), new int64(0x4ed8aa4a, -482243893), new int64(0x5b9cca4f, 0x7763e373), new int64(0x682e6ff3, -692930397), new int64(0x748f82ee, 0x5defb2fc), new int64(0x78a5636f, 0x43172f60), new int64(-2067236844, -1578062990), new int64(-1933114872, 0x1a6439ec), new int64(-1866530822, 0x23631e28), new int64(-1538233109, -561857047), new int64(-1090935817, -1295615723), new int64(-965641998, -479046869), new int64(-903397682, -366583396), new int64(-779700025, 0x21c0c207), new int64(-354779690, -840897762), new int64(-176337025, -294727304), new int64(0x6f067aa, 0x72176fba), new int64(0xa637dc5, -1563912026), new int64(0x113f9804, -1090974290), new int64(0x1b710b35, 0x131c471b), new int64(0x28db77f5, 0x23047d84), new int64(0x32caab7b, 0x40c72493), new int64(0x3c9ebe0a, 0x15c9bebc), new int64(0x431d67c4, -1676669620), new int64(0x4cc5d4be, -885112138), new int64(0x597f299c, -60457430), new int64(0x5fcb6fab, 0x3ad6faec), new int64(0x6c44198c, 0x4a475817)];
+                 }

 
 

-           if (_userDetails && _userDetails.changesets_count !== undefined) {
-             var changesetsCount = parseInt(_userDetails.changesets_count, 10) + 1; // #4283
+                 for (i = 0; i < 80; i += 1) {
+                   W[i] = new int64(0, 0);
+                 } // append padding to the source string. The format is described in the FIPS.

 
 

-             tags.changesets_count = String(changesetsCount); // first 100 edits - new user

 
 

-             if (changesetsCount <= 100) {
-               var s;
-               s = corePreferences('walkthrough_completed');
+                 x[len >> 5] |= 0x80 << 24 - (len & 0x1f);
+                 x[(len + 128 >> 10 << 5) + 31] = len;
+                 l = x.length;

 
 

-               if (s) {
-                 tags['ideditor:walkthrough_completed'] = s;
-               }
+                 for (i = 0; i < l; i += 32) {
+                   //32 dwords is the block size
+                   int64copy(a, H[0]);
+                   int64copy(b, H[1]);
+                   int64copy(c, H[2]);
+                   int64copy(d, H[3]);
+                   int64copy(e, H[4]);
+                   int64copy(f, H[5]);
+                   int64copy(g, H[6]);
+                   int64copy(h, H[7]);

 
 

-               s = corePreferences('walkthrough_progress');
+                   for (j = 0; j < 16; j += 1) {
+                     W[j].h = x[i + 2 * j];
+                     W[j].l = x[i + 2 * j + 1];
+                   }

 
 

-               if (s) {
-                 tags['ideditor:walkthrough_progress'] = s;
-               }
+                   for (j = 16; j < 80; j += 1) {
+                     //sigma1
+                     int64rrot(r1, W[j - 2], 19);
+                     int64revrrot(r2, W[j - 2], 29);
+                     int64shr(r3, W[j - 2], 6);
+                     s1.l = r1.l ^ r2.l ^ r3.l;
+                     s1.h = r1.h ^ r2.h ^ r3.h; //sigma0

 
 

-               s = corePreferences('walkthrough_started');
+                     int64rrot(r1, W[j - 15], 1);
+                     int64rrot(r2, W[j - 15], 8);
+                     int64shr(r3, W[j - 15], 7);
+                     s0.l = r1.l ^ r2.l ^ r3.l;
+                     s0.h = r1.h ^ r2.h ^ r3.h;
+                     int64add4(W[j], s1, W[j - 7], s0, W[j - 16]);
+                   }

 
 

-               if (s) {
-                 tags['ideditor:walkthrough_started'] = s;
-               }
-             }
-           } else {
-             delete tags.changesets_count;
-           }
+                   for (j = 0; j < 80; j += 1) {
+                     //Ch
+                     Ch.l = e.l & f.l ^ ~e.l & g.l;
+                     Ch.h = e.h & f.h ^ ~e.h & g.h; //Sigma1

 
 

-           if (!fastDeepEqual(context.changeset.tags, tags)) {
-             context.changeset = context.changeset.update({
-               tags: tags
-             });
-           }
-         }
+                     int64rrot(r1, e, 14);
+                     int64rrot(r2, e, 18);
+                     int64revrrot(r3, e, 9);
+                     s1.l = r1.l ^ r2.l ^ r3.l;
+                     s1.h = r1.h ^ r2.h ^ r3.h; //Sigma0

 
 

-         commit.reset = function () {
-           context.changeset = null;
-         };
+                     int64rrot(r1, a, 28);
+                     int64revrrot(r2, a, 2);
+                     int64revrrot(r3, a, 7);
+                     s0.l = r1.l ^ r2.l ^ r3.l;
+                     s0.h = r1.h ^ r2.h ^ r3.h; //Maj

 
 

-         return utilRebind(commit, dispatch$1, 'on');
-       }
+                     Maj.l = a.l & b.l ^ a.l & c.l ^ b.l & c.l;
+                     Maj.h = a.h & b.h ^ a.h & c.h ^ b.h & c.h;
+                     int64add5(T1, h, s1, Ch, sha512_k[j], W[j]);
+                     int64add(T2, s0, Maj);
+                     int64copy(h, g);
+                     int64copy(g, f);
+                     int64copy(f, e);
+                     int64add(e, d, T1);
+                     int64copy(d, c);
+                     int64copy(c, b);
+                     int64copy(b, a);
+                     int64add(a, T1, T2);
+                   }

 
 

-       var globalIsFinite = global_1.isFinite;
+                   int64add(H[0], H[0], a);
+                   int64add(H[1], H[1], b);
+                   int64add(H[2], H[2], c);
+                   int64add(H[3], H[3], d);
+                   int64add(H[4], H[4], e);
+                   int64add(H[5], H[5], f);
+                   int64add(H[6], H[6], g);
+                   int64add(H[7], H[7], h);
+                 } //represent the hash as an array of 32-bit dwords

 
 

-       // `Number.isFinite` method
-       // https://tc39.github.io/ecma262/#sec-number.isfinite
-       var numberIsFinite = Number.isFinite || function isFinite(it) {
-         return typeof it == 'number' && globalIsFinite(it);
-       };

 
 

-       // `Number.isFinite` method
-       // https://tc39.github.io/ecma262/#sec-number.isfinite
-       _export({ target: 'Number', stat: true }, { isFinite: numberIsFinite });
-
-       var RADIUS = 6378137;
-       var FLATTENING = 1 / 298.257223563;
-       var POLAR_RADIUS$1 = 6356752.3142;
-       var wgs84 = {
-         RADIUS: RADIUS,
-         FLATTENING: FLATTENING,
-         POLAR_RADIUS: POLAR_RADIUS$1
-       };
+                 for (i = 0; i < 8; i += 1) {
+                   hash[2 * i] = H[i].h;
+                   hash[2 * i + 1] = H[i].l;
+                 }

 
 

-       var geometry_1 = geometry;
-       var ring = ringArea;
+                 return hash;
+               } //A constructor for 64-bit numbers

 
 

-       function geometry(_) {
-         var area = 0,
-             i;

 
 

-         switch (_.type) {
-           case 'Polygon':
-             return polygonArea(_.coordinates);
+               function int64(h, l) {
+                 this.h = h;
+                 this.l = l; //this.toString = int64toString;
+               } //Copies src into dst, assuming both are 64-bit numbers

 
 

-           case 'MultiPolygon':
-             for (i = 0; i < _.coordinates.length; i++) {
-               area += polygonArea(_.coordinates[i]);
-             }

 
 

-             return area;
+               function int64copy(dst, src) {
+                 dst.h = src.h;
+                 dst.l = src.l;
+               } //Right-rotates a 64-bit number by shift
+               //Won't handle cases of shift>=32
+               //The function revrrot() is for that

 
 

-           case 'Point':
-           case 'MultiPoint':
-           case 'LineString':
-           case 'MultiLineString':
-             return 0;

 
 

-           case 'GeometryCollection':
-             for (i = 0; i < _.geometries.length; i++) {
-               area += geometry(_.geometries[i]);
-             }
+               function int64rrot(dst, x, shift) {
+                 dst.l = x.l >>> shift | x.h << 32 - shift;
+                 dst.h = x.h >>> shift | x.l << 32 - shift;
+               } //Reverses the dwords of the source and then rotates right by shift.
+               //This is equivalent to rotation by 32+shift

 
 

-             return area;
-         }
-       }

 
 

-       function polygonArea(coords) {
-         var area = 0;
+               function int64revrrot(dst, x, shift) {
+                 dst.l = x.h >>> shift | x.l << 32 - shift;
+                 dst.h = x.l >>> shift | x.h << 32 - shift;
+               } //Bitwise-shifts right a 64-bit number by shift
+               //Won't handle shift>=32, but it's never needed in SHA512

 
 

-         if (coords && coords.length > 0) {
-           area += Math.abs(ringArea(coords[0]));

 
 

-           for (var i = 1; i < coords.length; i++) {
-             area -= Math.abs(ringArea(coords[i]));
-           }
-         }
+               function int64shr(dst, x, shift) {
+                 dst.l = x.l >>> shift | x.h << 32 - shift;
+                 dst.h = x.h >>> shift;
+               } //Adds two 64-bit numbers
+               //Like the original implementation, does not rely on 32-bit operations

 
 

-         return area;
-       }
-       /**
-        * Calculate the approximate area of the polygon were it projected onto
-        *     the earth.  Note that this area will be positive if ring is oriented
-        *     clockwise, otherwise it will be negative.
-        *
-        * Reference:
-        * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
-        *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
-        *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
-        *
-        * Returns:
-        * {float} The approximate signed geodesic area of the polygon in square
-        *     meters.
-        */

 
 

+               function int64add(dst, x, y) {
+                 var w0 = (x.l & 0xffff) + (y.l & 0xffff);
+                 var w1 = (x.l >>> 16) + (y.l >>> 16) + (w0 >>> 16);
+                 var w2 = (x.h & 0xffff) + (y.h & 0xffff) + (w1 >>> 16);
+                 var w3 = (x.h >>> 16) + (y.h >>> 16) + (w2 >>> 16);
+                 dst.l = w0 & 0xffff | w1 << 16;
+                 dst.h = w2 & 0xffff | w3 << 16;
+               } //Same, except with 4 addends. Works faster than adding them one by one.

 
 

-       function ringArea(coords) {
-         var p1,
-             p2,
-             p3,
-             lowerIndex,
-             middleIndex,
-             upperIndex,
-             i,
-             area = 0,
-             coordsLength = coords.length;

 
 

-         if (coordsLength > 2) {
-           for (i = 0; i < coordsLength; i++) {
-             if (i === coordsLength - 2) {
-               // i = N-2
-               lowerIndex = coordsLength - 2;
-               middleIndex = coordsLength - 1;
-               upperIndex = 0;
-             } else if (i === coordsLength - 1) {
-               // i = N-1
-               lowerIndex = coordsLength - 1;
-               middleIndex = 0;
-               upperIndex = 1;
-             } else {
-               // i = 0 to N-3
-               lowerIndex = i;
-               middleIndex = i + 1;
-               upperIndex = i + 2;
-             }
+               function int64add4(dst, a, b, c, d) {
+                 var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff);
+                 var w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (w0 >>> 16);
+                 var w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (w1 >>> 16);
+                 var w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (w2 >>> 16);
+                 dst.l = w0 & 0xffff | w1 << 16;
+                 dst.h = w2 & 0xffff | w3 << 16;
+               } //Same, except with 5 addends

 
 

-             p1 = coords[lowerIndex];
-             p2 = coords[middleIndex];
-             p3 = coords[upperIndex];
-             area += (rad(p3[0]) - rad(p1[0])) * Math.sin(rad(p2[1]));
-           }

 
 

-           area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
-         }
+               function int64add5(dst, a, b, c, d, e) {
+                 var w0 = (a.l & 0xffff) + (b.l & 0xffff) + (c.l & 0xffff) + (d.l & 0xffff) + (e.l & 0xffff),
+                     w1 = (a.l >>> 16) + (b.l >>> 16) + (c.l >>> 16) + (d.l >>> 16) + (e.l >>> 16) + (w0 >>> 16),
+                     w2 = (a.h & 0xffff) + (b.h & 0xffff) + (c.h & 0xffff) + (d.h & 0xffff) + (e.h & 0xffff) + (w1 >>> 16),
+                     w3 = (a.h >>> 16) + (b.h >>> 16) + (c.h >>> 16) + (d.h >>> 16) + (e.h >>> 16) + (w2 >>> 16);
+                 dst.l = w0 & 0xffff | w1 << 16;
+                 dst.h = w2 & 0xffff | w3 << 16;
+               }
+             },

 
 

-         return area;
-       }
+             /**
+              * @class Hashes.RMD160
+              * @constructor
+              * @param {Object} [config]
+              *
+              * A JavaScript implementation of the RIPEMD-160 Algorithm
+              * Version 2.2 Copyright Jeremy Lin, Paul Johnston 2000 - 2009.
+              * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+              * See http://pajhome.org.uk/crypt/md5 for details.
+              * Also http://www.ocf.berkeley.edu/~jjlin/jsotp/
+              */
+             RMD160: function RMD160(options) {
+               /**
+                * Private properties configuration variables. You may need to tweak these to be compatible with
+                * the server-side, but the defaults work in most cases.
+                * @see this.setUpperCase() method
+                * @see this.setPad() method
+                */
+               options && typeof options.uppercase === 'boolean' ? options.uppercase : false;

 
 

-       function rad(_) {
-         return _ * Math.PI / 180;
-       }
+               var /* hexadecimal output case format. false - lowercase; true - uppercase  */
+               b64pad = options && typeof options.pad === 'string' ? options.pa : '=',

 
 

-       var geojsonArea = {
-         geometry: geometry_1,
-         ring: ring
-       };
+               /* base-64 pad character. Default '=' for strict RFC compliance   */
+               utf8 = options && typeof options.utf8 === 'boolean' ? options.utf8 : true,

 
 

-       function toRadians(angleInDegrees) {
-         return angleInDegrees * Math.PI / 180;
-       }
+               /* enable/disable utf8 encoding */
+               rmd160_r1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13],
+                   rmd160_r2 = [5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11],
+                   rmd160_s1 = [11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6],
+                   rmd160_s2 = [8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11];
+               /* privileged (public) methods */

 
 

-       function toDegrees(angleInRadians) {
-         return angleInRadians * 180 / Math.PI;
-       }
+               this.hex = function (s) {
+                 return rstr2hex(rstr(s));
+               };

 
 

-       function offset(c1, distance, bearing) {
-         var lat1 = toRadians(c1[1]);
-         var lon1 = toRadians(c1[0]);
-         var dByR = distance / 6378137; // distance divided by 6378137 (radius of the earth) wgs84
+               this.b64 = function (s) {
+                 return rstr2b64(rstr(s), b64pad);
+               };

 
 

-         var lat = Math.asin(Math.sin(lat1) * Math.cos(dByR) + Math.cos(lat1) * Math.sin(dByR) * Math.cos(bearing));
-         var lon = lon1 + Math.atan2(Math.sin(bearing) * Math.sin(dByR) * Math.cos(lat1), Math.cos(dByR) - Math.sin(lat1) * Math.sin(lat));
-         return [toDegrees(lon), toDegrees(lat)];
-       }
+               this.any = function (s, e) {
+                 return rstr2any(rstr(s), e);
+               };

 
 

-       function validateCenter(center) {
-         var validCenterLengths = [2, 3];
+               this.raw = function (s) {
+                 return rstr(s);
+               };

 
 

-         if (!Array.isArray(center) || !validCenterLengths.includes(center.length)) {
-           throw new Error("ERROR! Center has to be an array of length two or three");
-         }
+               this.hex_hmac = function (k, d) {
+                 return rstr2hex(rstr_hmac(k, d));
+               };

 
 

-         var _center = _slicedToArray(center, 2),
-             lng = _center[0],
-             lat = _center[1];
+               this.b64_hmac = function (k, d) {
+                 return rstr2b64(rstr_hmac(k, d), b64pad);
+               };

 
 

-         if (typeof lng !== "number" || typeof lat !== "number") {
-           throw new Error("ERROR! Longitude and Latitude has to be numbers but where ".concat(_typeof(lng), " and ").concat(_typeof(lat)));
-         }
+               this.any_hmac = function (k, d, e) {
+                 return rstr2any(rstr_hmac(k, d), e);
+               };
+               /**
+                * Perform a simple self-test to see if the VM is working
+                * @return {String} Hexadecimal hash sample
+                * @public
+                */

 
 

-         if (lng > 180 || lng < -180) {
-           throw new Error("ERROR! Longitude has to be between -180 and 180 but was ".concat(lng));
-         }

 
 

-         if (lat > 90 || lat < -90) {
-           throw new Error("ERROR! Latitude has to be between -90 and 90 but was ".concat(lat));
-         }
-       }
+               this.vm_test = function () {
+                 return hex('abc').toLowerCase() === '900150983cd24fb0d6963f7d28e17f72';
+               };
+               /**
+                * @description Enable/disable uppercase hexadecimal returned string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-       function validateRadius(radius) {
-         if (typeof radius !== "number") {
-           throw new Error("ERROR! Radius has to be a positive number but was: ".concat(_typeof(radius)));
-         }

 
 

-         if (radius <= 0) {
-           throw new Error("ERROR! Radius has to be a positive number but was: ".concat(radius));
-         }
-       }
+               this.setUpperCase = function (a) {

 
 

-       function validateNumberOfSegments(numberOfSegments) {
-         if (typeof numberOfSegments !== "number" && numberOfSegments !== undefined) {
-           throw new Error("ERROR! Number of segments has to be a number but was: ".concat(_typeof(numberOfSegments)));
-         }
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {string} Pad
+                * @return {Object} this
+                * @public
+                */

 
 

-         if (numberOfSegments < 3) {
-           throw new Error("ERROR! Number of segments has to be at least 3 but was: ".concat(numberOfSegments));
-         }
-       }

 
 

-       function validateInput(_ref) {
-         var center = _ref.center,
-             radius = _ref.radius,
-             numberOfSegments = _ref.numberOfSegments;
-         validateCenter(center);
-         validateRadius(radius);
-         validateNumberOfSegments(numberOfSegments);
-       }
+               this.setPad = function (a) {
+                 if (typeof a !== 'undefined') {
+                   b64pad = a;
+                 }

 
 

-       var circleToPolygon = function circleToPolygon(center, radius, numberOfSegments) {
-         var n = numberOfSegments ? numberOfSegments : 32; // validateInput() throws error on invalid input and do nothing on valid input
+                 return this;
+               };
+               /**
+                * @description Defines a base64 pad string
+                * @param {boolean}
+                * @return {Object} this
+                * @public
+                */

 
 

-         validateInput({
-           center: center,
-           radius: radius,
-           numberOfSegments: numberOfSegments
-         });
-         var coordinates = [];

 
 

-         for (var i = 0; i < n; ++i) {
-           coordinates.push(offset(center, radius, 2 * Math.PI * -i / n));
-         }
+               this.setUTF8 = function (a) {
+                 if (typeof a === 'boolean') {
+                   utf8 = a;
+                 }

 
 

-         coordinates.push(coordinates[0]);
-         return {
-           type: "Polygon",
-           coordinates: [coordinates]
-         };
-       };
+                 return this;
+               };
+               /* private methods */

 
 

-       // `Number.EPSILON` constant
-       // https://tc39.github.io/ecma262/#sec-number.epsilon
-       _export({ target: 'Number', stat: true }, {
-         EPSILON: Math.pow(2, -52)
-       });
+               /**
+                * Calculate the rmd160 of a raw string
+                */

 
 

-       /**
-        * splaytree v3.0.1
-        * Fast Splay tree for Node and browser
-        *
-        * @author Alexander Milevski <info@w8r.name>
-        * @license MIT
-        * @preserve
-        */
-       var Node$1 = function Node(key, data) {
-         _classCallCheck(this, Node);
-
-         this.next = null;
-         this.key = key;
-         this.data = data;
-         this.left = null;
-         this.right = null;
-       };
-       /* follows "An implementation of top-down splaying"
-        * by D. Sleator <sleator@cs.cmu.edu> March 1992
-        */

 
 

+               function rstr(s) {
+                 s = utf8 ? utf8Encode(s) : s;
+                 return binl2rstr(binl(rstr2binl(s), s.length * 8));
+               }
+               /**
+                * Calculate the HMAC-rmd160 of a key and some data (raw strings)
+                */

 
 

-       function DEFAULT_COMPARE$1(a, b) {
-         return a > b ? 1 : a < b ? -1 : 0;
-       }
-       /**
-        * Simple top down splay, not requiring i to be in the tree t.
-        */

 
 

+               function rstr_hmac(key, data) {
+                 key = utf8 ? utf8Encode(key) : key;
+                 data = utf8 ? utf8Encode(data) : data;
+                 var i,
+                     hash,
+                     bkey = rstr2binl(key),
+                     ipad = Array(16),
+                     opad = Array(16);

 
 

-       function splay(i, t, comparator) {
-         var N = new Node$1(null, null);
-         var l = N;
-         var r = N;
+                 if (bkey.length > 16) {
+                   bkey = binl(bkey, key.length * 8);
+                 }

 
 

-         while (true) {
-           var cmp = comparator(i, t.key); //if (i < t.key) {
+                 for (i = 0; i < 16; i += 1) {
+                   ipad[i] = bkey[i] ^ 0x36363636;
+                   opad[i] = bkey[i] ^ 0x5C5C5C5C;
+                 }

 
 

-           if (cmp < 0) {
-             if (t.left === null) break; //if (i < t.left.key) {
+                 hash = binl(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
+                 return binl2rstr(binl(opad.concat(hash), 512 + 160));
+               }
+               /**
+                * Convert an array of little-endian words to a string
+                */

 
 

-             if (comparator(i, t.left.key) < 0) {
-               var y = t.left;
-               /* rotate right */

 
 

-               t.left = y.right;
-               y.right = t;
-               t = y;
-               if (t.left === null) break;
-             }
+               function binl2rstr(input) {
+                 var i,
+                     output = '',
+                     l = input.length * 32;

 
 

-             r.left = t;
-             /* link right */
+                 for (i = 0; i < l; i += 8) {
+                   output += String.fromCharCode(input[i >> 5] >>> i % 32 & 0xFF);
+                 }

 
 

-             r = t;
-             t = t.left; //} else if (i > t.key) {
-           } else if (cmp > 0) {
-             if (t.right === null) break; //if (i > t.right.key) {
+                 return output;
+               }
+               /**
+                * Calculate the RIPE-MD160 of an array of little-endian words, and a bit length.
+                */

 
 

-             if (comparator(i, t.right.key) > 0) {
-               var _y = t.right;
-               /* rotate left */

 
 

-               t.right = _y.left;
-               _y.left = t;
-               t = _y;
-               if (t.right === null) break;
-             }
+               function binl(x, len) {
+                 var T,
+                     j,
+                     i,
+                     l,
+                     h0 = 0x67452301,
+                     h1 = 0xefcdab89,
+                     h2 = 0x98badcfe,
+                     h3 = 0x10325476,
+                     h4 = 0xc3d2e1f0,
+                     A1,
+                     B1,
+                     C1,
+                     D1,
+                     E1,
+                     A2,
+                     B2,
+                     C2,
+                     D2,
+                     E2;
+                 /* append padding */

 
 

-             l.right = t;
-             /* link left */
+                 x[len >> 5] |= 0x80 << len % 32;
+                 x[(len + 64 >>> 9 << 4) + 14] = len;
+                 l = x.length;

 
 

-             l = t;
-             t = t.right;
-           } else break;
-         }
-         /* assemble */
+                 for (i = 0; i < l; i += 16) {
+                   A1 = A2 = h0;
+                   B1 = B2 = h1;
+                   C1 = C2 = h2;
+                   D1 = D2 = h3;
+                   E1 = E2 = h4;

 
 

+                   for (j = 0; j <= 79; j += 1) {
+                     T = safe_add(A1, rmd160_f(j, B1, C1, D1));
+                     T = safe_add(T, x[i + rmd160_r1[j]]);
+                     T = safe_add(T, rmd160_K1(j));
+                     T = safe_add(bit_rol(T, rmd160_s1[j]), E1);
+                     A1 = E1;
+                     E1 = D1;
+                     D1 = bit_rol(C1, 10);
+                     C1 = B1;
+                     B1 = T;
+                     T = safe_add(A2, rmd160_f(79 - j, B2, C2, D2));
+                     T = safe_add(T, x[i + rmd160_r2[j]]);
+                     T = safe_add(T, rmd160_K2(j));
+                     T = safe_add(bit_rol(T, rmd160_s2[j]), E2);
+                     A2 = E2;
+                     E2 = D2;
+                     D2 = bit_rol(C2, 10);
+                     C2 = B2;
+                     B2 = T;
+                   }

 
 

-         l.right = t.left;
-         r.left = t.right;
-         t.left = N.right;
-         t.right = N.left;
-         return t;
-       }
+                   T = safe_add(h1, safe_add(C1, D2));
+                   h1 = safe_add(h2, safe_add(D1, E2));
+                   h2 = safe_add(h3, safe_add(E1, A2));
+                   h3 = safe_add(h4, safe_add(A1, B2));
+                   h4 = safe_add(h0, safe_add(B1, C2));
+                   h0 = T;
+                 }

 
 

-       function _insert(i, data, t, comparator) {
-         var node = new Node$1(i, data);
+                 return [h0, h1, h2, h3, h4];
+               } // specific algorithm methods

 
 

-         if (t === null) {
-           node.left = node.right = null;
-           return node;
-         }

 
 

-         t = splay(i, t, comparator);
-         var cmp = comparator(i, t.key);
+               function rmd160_f(j, x, y, z) {
+                 return 0 <= j && j <= 15 ? x ^ y ^ z : 16 <= j && j <= 31 ? x & y | ~x & z : 32 <= j && j <= 47 ? (x | ~y) ^ z : 48 <= j && j <= 63 ? x & z | y & ~z : 64 <= j && j <= 79 ? x ^ (y | ~z) : 'rmd160_f: j out of range';
+               }

 
 

-         if (cmp < 0) {
-           node.left = t.left;
-           node.right = t;
-           t.left = null;
-         } else if (cmp >= 0) {
-           node.right = t.right;
-           node.left = t;
-           t.right = null;
-         }
+               function rmd160_K1(j) {
+                 return 0 <= j && j <= 15 ? 0x00000000 : 16 <= j && j <= 31 ? 0x5a827999 : 32 <= j && j <= 47 ? 0x6ed9eba1 : 48 <= j && j <= 63 ? 0x8f1bbcdc : 64 <= j && j <= 79 ? 0xa953fd4e : 'rmd160_K1: j out of range';
+               }

 
 

-         return node;
-       }
+               function rmd160_K2(j) {
+                 return 0 <= j && j <= 15 ? 0x50a28be6 : 16 <= j && j <= 31 ? 0x5c4dd124 : 32 <= j && j <= 47 ? 0x6d703ef3 : 48 <= j && j <= 63 ? 0x7a6d76e9 : 64 <= j && j <= 79 ? 0x00000000 : 'rmd160_K2: j out of range';
+               }
+             }
+           }; // exposes Hashes

 
 

-       function _split(key, v, comparator) {
-         var left = null;
-         var right = null;
+           (function (window, undefined$1) {
+             var freeExports = false;

 
 

-         if (v) {
-           v = splay(key, v, comparator);
-           var cmp = comparator(v.key, key);
+             {
+               freeExports = exports;

 
 

-           if (cmp === 0) {
-             left = v.left;
-             right = v.right;
-           } else if (cmp < 0) {
-             right = v.right;
-             v.right = null;
-             left = v;
-           } else {
-             left = v.left;
-             v.left = null;
-             right = v;
-           }
-         }
+               if (exports && _typeof(commonjsGlobal) === 'object' && commonjsGlobal && commonjsGlobal === commonjsGlobal.global) {
+                 window = commonjsGlobal;
+               }
+             }

 
 

-         return {
-           left: left,
-           right: right
-         };
-       }
+             if (typeof undefined$1 === 'function' && _typeof(undefined$1.amd) === 'object' && undefined$1.amd) {
+               // define as an anonymous module, so, through path mapping, it can be aliased
+               undefined$1(function () {
+                 return Hashes;
+               });
+             } else if (freeExports) {
+               // in Node.js or RingoJS v0.8.0+
+               if (module && module.exports === freeExports) {
+                 module.exports = Hashes;
+               } // in Narwhal or RingoJS v0.7.0-
+               else {
+                   freeExports.Hashes = Hashes;
+                 }
+             } else {
+               // in a browser or Rhino
+               window.Hashes = Hashes;
+             }
+           })(this);
+         })(); // IIFE

 
 

-       function merge$4(left, right, comparator) {
-         if (right === null) return left;
-         if (left === null) return right;
-         right = splay(left.key, right, comparator);
-         right.left = left;
-         return right;
-       }
-       /**
-        * Prints level of the tree
-        */
+       })(hashes$1, hashes$1.exports);

 
 

+       var hashes = hashes$1.exports,
+           sha1 = new hashes.SHA1(); // # xtend

 
 

-       function printRow(root, prefix, isTail, out, printNode) {
-         if (root) {
-           out("".concat(prefix).concat(isTail ? '└── ' : '├── ').concat(printNode(root), "\n"));
-           var indent = prefix + (isTail ? '    ' : '│   ');
-           if (root.left) printRow(root.left, indent, false, out, printNode);
-           if (root.right) printRow(root.right, indent, true, out, printNode);
-         }
-       }
+       var hasOwnProperty$1 = Object.prototype.hasOwnProperty;

 
 

-       var Tree = /*#__PURE__*/function () {
-         function Tree() {
-           var comparator = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DEFAULT_COMPARE$1;
+       function xtend$1() {
+         var target = {};

 
 

-           _classCallCheck(this, Tree);
+         for (var i = 0; i < arguments.length; i++) {
+           var source = arguments[i];

 
 

-           this._root = null;
-           this._size = 0;
-           this._comparator = comparator;
+           for (var key in source) {
+             if (hasOwnProperty$1.call(source, key)) {
+               target[key] = source[key];
+             }
+           }

          }
          }

-         /**
-          * Inserts a key, allows duplicates
-          */
-

 
 

-         _createClass(Tree, [{
-           key: "insert",
-           value: function insert(key, data) {
-             this._size++;
-             return this._root = _insert(key, data, this._root, this._comparator);
-           }
-           /**
-            * Adds a key, if it is not present in the tree
-            */
+         return target;
+       }

 
 

-         }, {
-           key: "add",
-           value: function add(key, data) {
-             var node = new Node$1(key, data);
+       var ohauth$1 = {};

 
 

-             if (this._root === null) {
-               node.left = node.right = null;
-               this._size++;
-               this._root = node;
-             }
+       ohauth$1.qsString = function (obj) {
+         return Object.keys(obj).sort().map(function (key) {
+           return ohauth$1.percentEncode(key) + '=' + ohauth$1.percentEncode(obj[key]);
+         }).join('&');
+       };

 
 

-             var comparator = this._comparator;
-             var t = splay(key, this._root, comparator);
-             var cmp = comparator(key, t.key);
-             if (cmp === 0) this._root = t;else {
-               if (cmp < 0) {
-                 node.left = t.left;
-                 node.right = t;
-                 t.left = null;
-               } else if (cmp > 0) {
-                 node.right = t.right;
-                 node.left = t;
-                 t.right = null;
-               }
+       ohauth$1.stringQs = function (str) {
+         return str.split('&').filter(function (pair) {
+           return pair !== '';
+         }).reduce(function (obj, pair) {
+           var parts = pair.split('=');
+           obj[decodeURIComponent(parts[0])] = null === parts[1] ? '' : decodeURIComponent(parts[1]);
+           return obj;
+         }, {});
+       };

 
 

-               this._size++;
-               this._root = node;
-             }
-             return this._root;
-           }
-           /**
-            * @param  {Key} key
-            * @return {Node|null}
-            */
+       ohauth$1.rawxhr = function (method, url, data, headers, callback) {
+         var xhr = new XMLHttpRequest(),
+             twoHundred = /^20\d$/;

 
 

-         }, {
-           key: "remove",
-           value: function remove(key) {
-             this._root = this._remove(key, this._root, this._comparator);
+         xhr.onreadystatechange = function () {
+           if (4 === xhr.readyState && 0 !== xhr.status) {
+             if (twoHundred.test(xhr.status)) callback(null, xhr);else return callback(xhr, null);

            }
            }

-           /**
-            * Deletes i from the tree if it's there
-            */
+         };

 
 

-         }, {
-           key: "_remove",
-           value: function _remove(i, t, comparator) {
-             var x;
-             if (t === null) return null;
-             t = splay(i, t, comparator);
-             var cmp = comparator(i, t.key);
-
-             if (cmp === 0) {
-               /* found it */
-               if (t.left === null) {
-                 x = t.right;
-               } else {
-                 x = splay(i, t.left, comparator);
-                 x.right = t.right;
-               }
+         xhr.onerror = function (e) {
+           return callback(e, null);
+         };

 
 

-               this._size--;
-               return x;
-             }
+         xhr.open(method, url, true);

 
 

-             return t;
-             /* It wasn't there */
-           }
-           /**
-            * Removes and returns the node with smallest key
-            */
+         for (var h in headers) {
+           xhr.setRequestHeader(h, headers[h]);
+         }

 
 

-         }, {
-           key: "pop",
-           value: function pop() {
-             var node = this._root;
+         xhr.send(data);
+         return xhr;
+       };

 
 

-             if (node) {
-               while (node.left) {
-                 node = node.left;
-               }
+       ohauth$1.xhr = function (method, url, auth, data, options, callback) {
+         var headers = options && options.header || {
+           'Content-Type': 'application/x-www-form-urlencoded'
+         };
+         headers.Authorization = 'OAuth ' + ohauth$1.authHeader(auth);
+         return ohauth$1.rawxhr(method, url, data, headers, callback);
+       };

 
 

-               this._root = splay(node.key, this._root, this._comparator);
-               this._root = this._remove(node.key, this._root, this._comparator);
-               return {
-                 key: node.key,
-                 data: node.data
-               };
-             }
+       ohauth$1.nonce = function () {
+         for (var o = ''; o.length < 6;) {
+           o += '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'[Math.floor(Math.random() * 61)];
+         }

 
 

-             return null;
-           }
-           /**
-            * Find without splaying
-            */
+         return o;
+       };

 
 

-         }, {
-           key: "findStatic",
-           value: function findStatic(key) {
-             var current = this._root;
-             var compare = this._comparator;
+       ohauth$1.authHeader = function (obj) {
+         return Object.keys(obj).sort().map(function (key) {
+           return encodeURIComponent(key) + '="' + encodeURIComponent(obj[key]) + '"';
+         }).join(', ');
+       };

 
 

-             while (current) {
-               var cmp = compare(key, current.key);
-               if (cmp === 0) return current;else if (cmp < 0) current = current.left;else current = current.right;
-             }
+       ohauth$1.timestamp = function () {
+         return ~~(+new Date() / 1000);
+       };

 
 

-             return null;
-           }
-         }, {
-           key: "find",
-           value: function find(key) {
-             if (this._root) {
-               this._root = splay(key, this._root, this._comparator);
-               if (this._comparator(key, this._root.key) !== 0) return null;
-             }
+       ohauth$1.percentEncode = function (s) {
+         return encodeURIComponent(s).replace(/\!/g, '%21').replace(/\'/g, '%27').replace(/\*/g, '%2A').replace(/\(/g, '%28').replace(/\)/g, '%29');
+       };

 
 

-             return this._root;
-           }
-         }, {
-           key: "contains",
-           value: function contains(key) {
-             var current = this._root;
-             var compare = this._comparator;
+       ohauth$1.baseString = function (method, url, params) {
+         if (params.oauth_signature) delete params.oauth_signature;
+         return [method, ohauth$1.percentEncode(url), ohauth$1.percentEncode(ohauth$1.qsString(params))].join('&');
+       };

 
 

-             while (current) {
-               var cmp = compare(key, current.key);
-               if (cmp === 0) return true;else if (cmp < 0) current = current.left;else current = current.right;
-             }
+       ohauth$1.signature = function (oauth_secret, token_secret, baseString) {
+         return sha1.b64_hmac(ohauth$1.percentEncode(oauth_secret) + '&' + ohauth$1.percentEncode(token_secret), baseString);
+       };
+       /**
+        * Takes an options object for configuration (consumer_key,
+        * consumer_secret, version, signature_method, token, token_secret)
+        * and returns a function that generates the Authorization header
+        * for given data.
+        *
+        * The returned function takes these parameters:
+        * - method: GET/POST/...
+        * - uri: full URI with protocol, port, path and query string
+        * - extra_params: any extra parameters (that are passed in the POST data),
+        *   can be an object or a from-urlencoded string.
+        *
+        * Returned function returns full OAuth header with "OAuth" string in it.
+        */

 
 

-             return false;
-           }
-         }, {
-           key: "forEach",
-           value: function forEach(visitor, ctx) {
-             var current = this._root;
-             var Q = [];
-             /* Initialize stack s */
-
-             var done = false;
-
-             while (!done) {
-               if (current !== null) {
-                 Q.push(current);
-                 current = current.left;
-               } else {
-                 if (Q.length !== 0) {
-                   current = Q.pop();
-                   visitor.call(ctx, current);
-                   current = current.right;
-                 } else done = true;
-               }
-             }

 
 

-             return this;
-           }
-           /**
-            * Walk key range from `low` to `high`. Stops if `fn` returns a value.
-            */
+       ohauth$1.headerGenerator = function (options) {
+         options = options || {};
+         var consumer_key = options.consumer_key || '',
+             consumer_secret = options.consumer_secret || '',
+             signature_method = options.signature_method || 'HMAC-SHA1',
+             version = options.version || '1.0',
+             token = options.token || '',
+             token_secret = options.token_secret || '';
+         return function (method, uri, extra_params) {
+           method = method.toUpperCase();

 
 

-         }, {
-           key: "range",
-           value: function range(low, high, fn, ctx) {
-             var Q = [];
-             var compare = this._comparator;
-             var node = this._root;
-             var cmp;
-
-             while (Q.length !== 0 || node) {
-               if (node) {
-                 Q.push(node);
-                 node = node.left;
-               } else {
-                 node = Q.pop();
-                 cmp = compare(node.key, high);
+           if (typeof extra_params === 'string' && extra_params.length > 0) {
+             extra_params = ohauth$1.stringQs(extra_params);
+           }

 
 

-                 if (cmp > 0) {
-                   break;
-                 } else if (compare(node.key, low) >= 0) {
-                   if (fn.call(ctx, node)) return this; // stop if smth is returned
-                 }
+           var uri_parts = uri.split('?', 2),
+               base_uri = uri_parts[0];
+           var query_params = uri_parts.length === 2 ? ohauth$1.stringQs(uri_parts[1]) : {};
+           var oauth_params = {
+             oauth_consumer_key: consumer_key,
+             oauth_signature_method: signature_method,
+             oauth_version: version,
+             oauth_timestamp: ohauth$1.timestamp(),
+             oauth_nonce: ohauth$1.nonce()
+           };
+           if (token) oauth_params.oauth_token = token;
+           var all_params = xtend$1({}, oauth_params, query_params, extra_params),
+               base_str = ohauth$1.baseString(method, base_uri, all_params);
+           oauth_params.oauth_signature = ohauth$1.signature(consumer_secret, token_secret, base_str);
+           return 'OAuth ' + ohauth$1.authHeader(oauth_params);
+         };
+       };

 
 

-                 node = node.right;
-               }
-             }
+       var ohauth_1 = ohauth$1;

 
 

-             return this;
-           }
-           /**
-            * Returns array of keys
-            */
+       var resolveUrl$1 = {exports: {}};

 
 

-         }, {
-           key: "keys",
-           value: function keys() {
-             var keys = [];
-             this.forEach(function (_ref) {
-               var key = _ref.key;
-               return keys.push(key);
-             });
-             return keys;
+       (function (module, exports) {
+         // Copyright 2014 Simon Lydell
+         // X11 (“MIT”) Licensed. (See LICENSE.)
+         void function (root, factory) {
+           {
+             module.exports = factory();

            }
            }

-           /**
-            * Returns array of all the data in the nodes
-            */
+         }(commonjsGlobal, function () {
+           function resolveUrl()
+           /* ...urls */
+           {
+             var numUrls = arguments.length;

 
 

-         }, {
-           key: "values",
-           value: function values() {
-             var values = [];
-             this.forEach(function (_ref2) {
-               var data = _ref2.data;
-               return values.push(data);
-             });
-             return values;
-           }
-         }, {
-           key: "min",
-           value: function min() {
-             if (this._root) return this.minNode(this._root).key;
-             return null;
-           }
-         }, {
-           key: "max",
-           value: function max() {
-             if (this._root) return this.maxNode(this._root).key;
-             return null;
-           }
-         }, {
-           key: "minNode",
-           value: function minNode() {
-             var t = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this._root;
-             if (t) while (t.left) {
-               t = t.left;
+             if (numUrls === 0) {
+               throw new Error("resolveUrl requires at least one argument; got none.");

              }
              }

-             return t;
-           }
-         }, {
-           key: "maxNode",
-           value: function maxNode() {
-             var t = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this._root;
-             if (t) while (t.right) {
-               t = t.right;
+
+             var base = document.createElement("base");
+             base.href = arguments[0];
+
+             if (numUrls === 1) {
+               return base.href;

              }
              }

-             return t;
-           }
-           /**
-            * Returns node at given index
-            */

 
 

-         }, {
-           key: "at",
-           value: function at(index) {
-             var current = this._root;
-             var done = false;
-             var i = 0;
-             var Q = [];
+             var head = document.getElementsByTagName("head")[0];
+             head.insertBefore(base, head.firstChild);
+             var a = document.createElement("a");
+             var resolved;

 
 

-             while (!done) {
-               if (current) {
-                 Q.push(current);
-                 current = current.left;
-               } else {
-                 if (Q.length > 0) {
-                   current = Q.pop();
-                   if (i === index) return current;
-                   i++;
-                   current = current.right;
-                 } else done = true;
-               }
+             for (var index = 1; index < numUrls; index++) {
+               a.href = arguments[index];
+               resolved = a.href;
+               base.href = resolved;

              }
 
              }
 

-             return null;
+             head.removeChild(base);
+             return resolved;

            }
            }

-         }, {
-           key: "next",
-           value: function next(d) {
-             var root = this._root;
-             var successor = null;

 
 

-             if (d.right) {
-               successor = d.right;
+           return resolveUrl;
+         });
+       })(resolveUrl$1);

 
 

-               while (successor.left) {
-                 successor = successor.left;
-               }
+       var assign = make_assign();
+       var create$1 = make_create();
+       var trim$1 = make_trim();
+       var Global$5 = typeof window !== 'undefined' ? window : commonjsGlobal;
+       var util$6 = {
+         assign: assign,
+         create: create$1,
+         trim: trim$1,
+         bind: bind$1,
+         slice: slice$1,
+         each: each$7,
+         map: map,
+         pluck: pluck$1,
+         isList: isList$1,
+         isFunction: isFunction$1,
+         isObject: isObject$1,
+         Global: Global$5
+       };

 
 

-               return successor;
+       function make_assign() {
+         if (Object.assign) {
+           return Object.assign;
+         } else {
+           return function shimAssign(obj, props1, props2, etc) {
+             for (var i = 1; i < arguments.length; i++) {
+               each$7(Object(arguments[i]), function (val, key) {
+                 obj[key] = val;
+               });

              }
 
              }
 

-             var comparator = this._comparator;
+             return obj;
+           };
+         }
+       }

 
 

-             while (root) {
-               var cmp = comparator(d.key, root.key);
-               if (cmp === 0) break;else if (cmp < 0) {
-                 successor = root;
-                 root = root.left;
-               } else root = root.right;
-             }
+       function make_create() {
+         if (Object.create) {
+           return function create(obj, assignProps1, assignProps2, etc) {
+             var assignArgsList = slice$1(arguments, 1);
+             return assign.apply(this, [Object.create(obj)].concat(assignArgsList));
+           };
+         } else {
+           var F = function F() {}; // eslint-disable-line no-inner-declarations

 
 

-             return successor;
-           }
-         }, {
-           key: "prev",
-           value: function prev(d) {
-             var root = this._root;
-             var predecessor = null;

 
 

-             if (d.left !== null) {
-               predecessor = d.left;
+           return function create(obj, assignProps1, assignProps2, etc) {
+             var assignArgsList = slice$1(arguments, 1);
+             F.prototype = obj;
+             return assign.apply(this, [new F()].concat(assignArgsList));
+           };
+         }
+       }

 
 

-               while (predecessor.right) {
-                 predecessor = predecessor.right;
-               }
+       function make_trim() {
+         if (String.prototype.trim) {
+           return function trim(str) {
+             return String.prototype.trim.call(str);
+           };
+         } else {
+           return function trim(str) {
+             return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
+           };
+         }
+       }

 
 

-               return predecessor;
-             }
+       function bind$1(obj, fn) {
+         return function () {
+           return fn.apply(obj, Array.prototype.slice.call(arguments, 0));
+         };
+       }

 
 

-             var comparator = this._comparator;
+       function slice$1(arr, index) {
+         return Array.prototype.slice.call(arr, index || 0);
+       }

 
 

-             while (root) {
-               var cmp = comparator(d.key, root.key);
-               if (cmp === 0) break;else if (cmp < 0) root = root.left;else {
-                 predecessor = root;
-                 root = root.right;
-               }
-             }
+       function each$7(obj, fn) {
+         pluck$1(obj, function (val, key) {
+           fn(val, key);
+           return false;
+         });
+       }

 
 

-             return predecessor;
-           }
-         }, {
-           key: "clear",
-           value: function clear() {
-             this._root = null;
-             this._size = 0;
-             return this;
-           }
-         }, {
-           key: "toList",
-           value: function toList() {
-             return _toList(this._root);
-           }
-           /**
-            * Bulk-load items. Both array have to be same size
-            */
+       function map(obj, fn) {
+         var res = isList$1(obj) ? [] : {};
+         pluck$1(obj, function (v, k) {
+           res[k] = fn(v, k);
+           return false;
+         });
+         return res;
+       }

 
 

-         }, {
-           key: "load",
-           value: function load(keys) {
-             var values = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
-             var presort = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
-             var size = keys.length;
-             var comparator = this._comparator; // sort if needed
-
-             if (presort) sort$1(keys, values, 0, size - 1, comparator);
-
-             if (this._root === null) {
-               // empty tree
-               this._root = loadRecursive$1(keys, values, 0, size);
-               this._size = size;
-             } else {
-               // that re-builds the whole tree from two in-order traversals
-               var mergedList = mergeLists(this.toList(), createList(keys, values), comparator);
-               size = this._size + size;
-               this._root = sortedListToBST({
-                 head: mergedList
-               }, 0, size);
+       function pluck$1(obj, fn) {
+         if (isList$1(obj)) {
+           for (var i = 0; i < obj.length; i++) {
+             if (fn(obj[i], i)) {
+               return obj[i];

              }
              }

-
-             return this;
-           }
-         }, {
-           key: "isEmpty",
-           value: function isEmpty() {
-             return this._root === null;

            }
            }

-         }, {
-           key: "toString",
-           value: function toString() {
-             var printNode = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : function (n) {
-               return String(n.key);
-             };
-             var out = [];
-             printRow(this._root, '', true, function (v) {
-               return out.push(v);
-             }, printNode);
-             return out.join('');
+         } else {
+           for (var key in obj) {
+             if (obj.hasOwnProperty(key)) {
+               if (fn(obj[key], key)) {
+                 return obj[key];
+               }
+             }

            }
            }

-         }, {
-           key: "update",
-           value: function update(key, newKey, newData) {
-             var comparator = this._comparator;
+         }
+       }

 
 

-             var _split2 = _split(key, this._root, comparator),
-                 left = _split2.left,
-                 right = _split2.right;
+       function isList$1(val) {
+         return val != null && typeof val != 'function' && typeof val.length == 'number';
+       }

 
 

-             if (comparator(key, newKey) < 0) {
-               right = _insert(newKey, newData, right, comparator);
-             } else {
-               left = _insert(newKey, newData, left, comparator);
-             }
+       function isFunction$1(val) {
+         return val && {}.toString.call(val) === '[object Function]';
+       }

 
 

-             this._root = merge$4(left, right, comparator);
-           }
-         }, {
-           key: "split",
-           value: function split(key) {
-             return _split(key, this._root, this._comparator);
-           }
-         }, {
-           key: "size",
-           get: function get() {
-             return this._size;
-           }
-         }, {
-           key: "root",
-           get: function get() {
-             return this._root;
+       function isObject$1(val) {
+         return val && {}.toString.call(val) === '[object Object]';
+       }
+
+       var util$5 = util$6;
+       var slice = util$5.slice;
+       var pluck = util$5.pluck;
+       var each$6 = util$5.each;
+       var bind = util$5.bind;
+       var create = util$5.create;
+       var isList = util$5.isList;
+       var isFunction = util$5.isFunction;
+       var isObject = util$5.isObject;
+       var storeEngine = {
+         createStore: _createStore
+       };
+       var storeAPI = {
+         version: '2.0.12',
+         enabled: false,
+         // get returns the value of the given key. If that value
+         // is undefined, it returns optionalDefaultValue instead.
+         get: function get(key, optionalDefaultValue) {
+           var data = this.storage.read(this._namespacePrefix + key);
+           return this._deserialize(data, optionalDefaultValue);
+         },
+         // set will store the given value at key and returns value.
+         // Calling set with value === undefined is equivalent to calling remove.
+         set: function set(key, value) {
+           if (value === undefined) {
+             return this.remove(key);

            }
            }

-         }]);

 
 

-         return Tree;
-       }();
+           this.storage.write(this._namespacePrefix + key, this._serialize(value));
+           return value;
+         },
+         // remove deletes the key and value stored at the given key.
+         remove: function remove(key) {
+           this.storage.remove(this._namespacePrefix + key);
+         },
+         // each will call the given callback once for each key-value pair
+         // in this store.
+         each: function each(callback) {
+           var self = this;
+           this.storage.each(function (val, namespacedKey) {
+             callback.call(self, self._deserialize(val), (namespacedKey || '').replace(self._namespaceRegexp, ''));
+           });
+         },
+         // clearAll will remove all the stored key-value pairs in this store.
+         clearAll: function clearAll() {
+           this.storage.clearAll();
+         },
+         // additional functionality that can't live in plugins
+         // ---------------------------------------------------
+         // hasNamespace returns true if this store instance has the given namespace.
+         hasNamespace: function hasNamespace(namespace) {
+           return this._namespacePrefix == '__storejs_' + namespace + '_';
+         },
+         // createStore creates a store.js instance with the first
+         // functioning storage in the list of storage candidates,
+         // and applies the the given mixins to the instance.
+         createStore: function createStore() {
+           return _createStore.apply(this, arguments);
+         },
+         addPlugin: function addPlugin(plugin) {
+           this._addPlugin(plugin);
+         },
+         namespace: function namespace(_namespace) {
+           return _createStore(this.storage, this.plugins, _namespace);
+         }
+       };

 
 

-       function loadRecursive$1(keys, values, start, end) {
-         var size = end - start;
+       function _warn() {
+         var _console = typeof console == 'undefined' ? null : console;

 
 

-         if (size > 0) {
-           var middle = start + Math.floor(size / 2);
-           var key = keys[middle];
-           var data = values[middle];
-           var node = new Node$1(key, data);
-           node.left = loadRecursive$1(keys, values, start, middle);
-           node.right = loadRecursive$1(keys, values, middle + 1, end);
-           return node;
+         if (!_console) {
+           return;

          }
 
          }
 

-         return null;
+         var fn = _console.warn ? _console.warn : _console.log;
+         fn.apply(_console, arguments);

        }
 
        }
 

-       function createList(keys, values) {
-         var head = new Node$1(null, null);
-         var p = head;
+       function _createStore(storages, plugins, namespace) {
+         if (!namespace) {
+           namespace = '';
+         }

 
 

-         for (var i = 0; i < keys.length; i++) {
-           p = p.next = new Node$1(keys[i], values[i]);
+         if (storages && !isList(storages)) {
+           storages = [storages];

          }
 
          }
 

-         p.next = null;
-         return head.next;
-       }
+         if (plugins && !isList(plugins)) {
+           plugins = [plugins];
+         }

 
 

-       function _toList(root) {
-         var current = root;
-         var Q = [];
-         var done = false;
-         var head = new Node$1(null, null);
-         var p = head;
+         var namespacePrefix = namespace ? '__storejs_' + namespace + '_' : '';
+         var namespaceRegexp = namespace ? new RegExp('^' + namespacePrefix) : null;
+         var legalNamespaces = /^[a-zA-Z0-9_\-]*$/; // alpha-numeric + underscore and dash

 
 

-         while (!done) {
-           if (current) {
-             Q.push(current);
-             current = current.left;
-           } else {
-             if (Q.length > 0) {
-               current = p = p.next = Q.pop();
-               current = current.right;
-             } else done = true;
-           }
+         if (!legalNamespaces.test(namespace)) {
+           throw new Error('store.js namespaces can only have alphanumerics + underscores and dashes');

          }
 
          }
 

-         p.next = null; // that'll work even if the tree was empty
+         var _privateStoreProps = {
+           _namespacePrefix: namespacePrefix,
+           _namespaceRegexp: namespaceRegexp,
+           _testStorage: function _testStorage(storage) {
+             try {
+               var testStr = '__storejs__test__';
+               storage.write(testStr, testStr);
+               var ok = storage.read(testStr) === testStr;
+               storage.remove(testStr);
+               return ok;
+             } catch (e) {
+               return false;
+             }
+           },
+           _assignPluginFnProp: function _assignPluginFnProp(pluginFnProp, propName) {
+             var oldFn = this[propName];

 
 

-         return head.next;
-       }
+             this[propName] = function pluginFn() {
+               var args = slice(arguments, 0);
+               var self = this; // super_fn calls the old function which was overwritten by
+               // this mixin.

 
 

-       function sortedListToBST(list, start, end) {
-         var size = end - start;
+               function super_fn() {
+                 if (!oldFn) {
+                   return;
+                 }

 
 

-         if (size > 0) {
-           var middle = start + Math.floor(size / 2);
-           var left = sortedListToBST(list, start, middle);
-           var root = list.head;
-           root.left = left;
-           list.head = list.head.next;
-           root.right = sortedListToBST(list, middle + 1, end);
-           return root;
-         }
+                 each$6(arguments, function (arg, i) {
+                   args[i] = arg;
+                 });
+                 return oldFn.apply(self, args);
+               } // Give mixing function access to super_fn by prefixing all mixin function
+               // arguments with super_fn.
+
+
+               var newFnArgs = [super_fn].concat(args);
+               return pluginFnProp.apply(self, newFnArgs);
+             };
+           },
+           _serialize: function _serialize(obj) {
+             return JSON.stringify(obj);
+           },
+           _deserialize: function _deserialize(strVal, defaultVal) {
+             if (!strVal) {
+               return defaultVal;
+             } // It is possible that a raw string value has been previously stored
+             // in a storage without using store.js, meaning it will be a raw
+             // string value instead of a JSON serialized string. By defaulting
+             // to the raw string value in case of a JSON parse error, we allow
+             // for past stored values to be forwards-compatible with store.js
+
+
+             var val = '';
+
+             try {
+               val = JSON.parse(strVal);
+             } catch (e) {
+               val = strVal;
+             }
+
+             return val !== undefined ? val : defaultVal;
+           },
+           _addStorage: function _addStorage(storage) {
+             if (this.enabled) {
+               return;
+             }
+
+             if (this._testStorage(storage)) {
+               this.storage = storage;
+               this.enabled = true;
+             }
+           },
+           _addPlugin: function _addPlugin(plugin) {
+             var self = this; // If the plugin is an array, then add all plugins in the array.
+             // This allows for a plugin to depend on other plugins.

 
 

-         return null;
-       }
+             if (isList(plugin)) {
+               each$6(plugin, function (plugin) {
+                 self._addPlugin(plugin);
+               });
+               return;
+             } // Keep track of all plugins we've seen so far, so that we
+             // don't add any of them twice.

 
 

-       function mergeLists(l1, l2, compare) {
-         var head = new Node$1(null, null); // dummy

 
 

-         var p = head;
-         var p1 = l1;
-         var p2 = l2;
+             var seenPlugin = pluck(this.plugins, function (seenPlugin) {
+               return plugin === seenPlugin;
+             });

 
 

-         while (p1 !== null && p2 !== null) {
-           if (compare(p1.key, p2.key) < 0) {
-             p.next = p1;
-             p1 = p1.next;
-           } else {
-             p.next = p2;
-             p2 = p2.next;
-           }
+             if (seenPlugin) {
+               return;
+             }

 
 

-           p = p.next;
-         }
+             this.plugins.push(plugin); // Check that the plugin is properly formed

 
 

-         if (p1 !== null) {
-           p.next = p1;
-         } else if (p2 !== null) {
-           p.next = p2;
-         }
+             if (!isFunction(plugin)) {
+               throw new Error('Plugins must be function values that return objects');
+             }

 
 

-         return head.next;
-       }
+             var pluginProperties = plugin.call(this);

 
 

-       function sort$1(keys, values, left, right, compare) {
-         if (left >= right) return;
-         var pivot = keys[left + right >> 1];
-         var i = left - 1;
-         var j = right + 1;
+             if (!isObject(pluginProperties)) {
+               throw new Error('Plugins must return an object of function properties');
+             } // Add the plugin function properties to this store instance.

 
 

-         while (true) {
-           do {
-             i++;
-           } while (compare(keys[i], pivot) < 0);

 
 

-           do {
-             j--;
-           } while (compare(keys[j], pivot) > 0);
+             each$6(pluginProperties, function (pluginFnProp, propName) {
+               if (!isFunction(pluginFnProp)) {
+                 throw new Error('Bad plugin property: ' + propName + ' from plugin ' + plugin.name + '. Plugins should only return functions.');
+               }

 
 

-           if (i >= j) break;
-           var tmp = keys[i];
-           keys[i] = keys[j];
-           keys[j] = tmp;
-           tmp = values[i];
-           values[i] = values[j];
-           values[j] = tmp;
-         }
+               self._assignPluginFnProp(pluginFnProp, propName);
+             });
+           },
+           // Put deprecated properties in the private API, so as to not expose it to accidential
+           // discovery through inspection of the store object.
+           // Deprecated: addStorage
+           addStorage: function addStorage(storage) {
+             _warn('store.addStorage(storage) is deprecated. Use createStore([storages])');

 
 

-         sort$1(keys, values, left, j, compare);
-         sort$1(keys, values, j + 1, right, compare);
+             this._addStorage(storage);
+           }
+         };
+         var store = create(_privateStoreProps, storeAPI, {
+           plugins: []
+         });
+         store.raw = {};
+         each$6(store, function (prop, propName) {
+           if (isFunction(prop)) {
+             store.raw[propName] = bind(store, prop);
+           }
+         });
+         each$6(storages, function (storage) {
+           store._addStorage(storage);
+         });
+         each$6(plugins, function (plugin) {
+           store._addPlugin(plugin);
+         });
+         return store;

        }
 
        }
 

-       function _classCallCheck$1(instance, Constructor) {
-         if (!(instance instanceof Constructor)) {
-           throw new TypeError("Cannot call a class as a function");
-         }
-       }
+       var util$4 = util$6;
+       var Global$4 = util$4.Global;
+       var localStorage_1 = {
+         name: 'localStorage',
+         read: read$5,
+         write: write$5,
+         each: each$5,
+         remove: remove$5,
+         clearAll: clearAll$5
+       };

 
 

-       function _defineProperties$1(target, props) {
-         for (var i = 0; i < props.length; i++) {
-           var descriptor = props[i];
-           descriptor.enumerable = descriptor.enumerable || false;
-           descriptor.configurable = true;
-           if ("value" in descriptor) descriptor.writable = true;
-           Object.defineProperty(target, descriptor.key, descriptor);
-         }
+       function localStorage$1() {
+         return Global$4.localStorage;

        }
 
        }
 

-       function _createClass$1(Constructor, protoProps, staticProps) {
-         if (protoProps) _defineProperties$1(Constructor.prototype, protoProps);
-         if (staticProps) _defineProperties$1(Constructor, staticProps);
-         return Constructor;
+       function read$5(key) {
+         return localStorage$1().getItem(key);

        }
        }

-       /**
-        * A bounding box has the format:
-        *
-        *  { ll: { x: xmin, y: ymin }, ur: { x: xmax, y: ymax } }
-        *
-        */
-

 
 

-       var isInBbox = function isInBbox(bbox, point) {
-         return bbox.ll.x <= point.x && point.x <= bbox.ur.x && bbox.ll.y <= point.y && point.y <= bbox.ur.y;
-       };
-       /* Returns either null, or a bbox (aka an ordered pair of points)
-        * If there is only one point of overlap, a bbox with identical points
-        * will be returned */
+       function write$5(key, data) {
+         return localStorage$1().setItem(key, data);
+       }

 
 

+       function each$5(fn) {
+         for (var i = localStorage$1().length - 1; i >= 0; i--) {
+           var key = localStorage$1().key(i);
+           fn(read$5(key), key);
+         }
+       }

 
 

-       var getBboxOverlap = function getBboxOverlap(b1, b2) {
-         // check if the bboxes overlap at all
-         if (b2.ur.x < b1.ll.x || b1.ur.x < b2.ll.x || b2.ur.y < b1.ll.y || b1.ur.y < b2.ll.y) return null; // find the middle two X values
+       function remove$5(key) {
+         return localStorage$1().removeItem(key);
+       }

 
 

-         var lowerX = b1.ll.x < b2.ll.x ? b2.ll.x : b1.ll.x;
-         var upperX = b1.ur.x < b2.ur.x ? b1.ur.x : b2.ur.x; // find the middle two Y values
+       function clearAll$5() {
+         return localStorage$1().clear();
+       }

 
 

-         var lowerY = b1.ll.y < b2.ll.y ? b2.ll.y : b1.ll.y;
-         var upperY = b1.ur.y < b2.ur.y ? b1.ur.y : b2.ur.y; // put those middle values together to get the overlap
+       // versions 6 and 7, where no localStorage, etc
+       // is available.

 
 

-         return {
-           ll: {
-             x: lowerX,
-             y: lowerY
-           },
-           ur: {
-             x: upperX,
-             y: upperY
-           }
-         };
+       var util$3 = util$6;
+       var Global$3 = util$3.Global;
+       var oldFFGlobalStorage = {
+         name: 'oldFF-globalStorage',
+         read: read$4,
+         write: write$4,
+         each: each$4,
+         remove: remove$4,
+         clearAll: clearAll$4

        };
        };

-       /* Javascript doesn't do integer math. Everything is
-        * floating point with percision Number.EPSILON.
-        *
-        * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/EPSILON
-        */
-
+       var globalStorage = Global$3.globalStorage;

 
 

-       var epsilon$2 = Number.EPSILON; // IE Polyfill
-
-       if (epsilon$2 === undefined) epsilon$2 = Math.pow(2, -52);
-       var EPSILON_SQ = epsilon$2 * epsilon$2;
-       /* FLP comparator */
+       function read$4(key) {
+         return globalStorage[key];
+       }

 
 

-       var cmp = function cmp(a, b) {
-         // check if they're both 0
-         if (-epsilon$2 < a && a < epsilon$2) {
-           if (-epsilon$2 < b && b < epsilon$2) {
-             return 0;
-           }
-         } // check if they're flp equal
+       function write$4(key, data) {
+         globalStorage[key] = data;
+       }

 
 

+       function each$4(fn) {
+         for (var i = globalStorage.length - 1; i >= 0; i--) {
+           var key = globalStorage.key(i);
+           fn(globalStorage[key], key);
+         }
+       }

 
 

-         var ab = a - b;
+       function remove$4(key) {
+         return globalStorage.removeItem(key);
+       }

 
 

-         if (ab * ab < EPSILON_SQ * a * b) {
-           return 0;
-         } // normal comparison
+       function clearAll$4() {
+         each$4(function (key, _) {
+           delete globalStorage[key];
+         });
+       }

 
 

+       // versions 6 and 7, where no localStorage, sessionStorage, etc
+       // is available.

 
 

-         return a < b ? -1 : 1;
+       var util$2 = util$6;
+       var Global$2 = util$2.Global;
+       var oldIEUserDataStorage = {
+         name: 'oldIE-userDataStorage',
+         write: write$3,
+         read: read$3,
+         each: each$3,
+         remove: remove$3,
+         clearAll: clearAll$3

        };
        };

-       /**
-        * This class rounds incoming values sufficiently so that
-        * floating points problems are, for the most part, avoided.
-        *
-        * Incoming points are have their x & y values tested against
-        * all previously seen x & y values. If either is 'too close'
-        * to a previously seen value, it's value is 'snapped' to the
-        * previously seen value.
-        *
-        * All points should be rounded by this class before being
-        * stored in any data structures in the rest of this algorithm.
-        */
+       var storageName = 'storejs';
+       var doc$1 = Global$2.document;

 
 

+       var _withStorageEl = _makeIEStorageElFunction();

 
 

-       var PtRounder = /*#__PURE__*/function () {
-         function PtRounder() {
-           _classCallCheck$1(this, PtRounder);
+       var disable = (Global$2.navigator ? Global$2.navigator.userAgent : '').match(/ (MSIE 8|MSIE 9|MSIE 10)\./); // MSIE 9.x, MSIE 10.x

 
 

-           this.reset();
+       function write$3(unfixedKey, data) {
+         if (disable) {
+           return;

          }
 
          }
 

-         _createClass$1(PtRounder, [{
-           key: "reset",
-           value: function reset() {
-             this.xRounder = new CoordRounder();
-             this.yRounder = new CoordRounder();
-           }
-         }, {
-           key: "round",
-           value: function round(x, y) {
-             return {
-               x: this.xRounder.round(x),
-               y: this.yRounder.round(y)
-             };
-           }
-         }]);
-
-         return PtRounder;
-       }();
-
-       var CoordRounder = /*#__PURE__*/function () {
-         function CoordRounder() {
-           _classCallCheck$1(this, CoordRounder);
-
-           this.tree = new Tree(); // preseed with 0 so we don't end up with values < Number.EPSILON
+         var fixedKey = fixKey(unfixedKey);

 
 

-           this.round(0);
-         } // Note: this can rounds input values backwards or forwards.
-         //       You might ask, why not restrict this to just rounding
-         //       forwards? Wouldn't that allow left endpoints to always
-         //       remain left endpoints during splitting (never change to
-         //       right). No - it wouldn't, because we snap intersections
-         //       to endpoints (to establish independence from the segment
-         //       angle for t-intersections).
+         _withStorageEl(function (storageEl) {
+           storageEl.setAttribute(fixedKey, data);
+           storageEl.save(storageName);
+         });
+       }

 
 

+       function read$3(unfixedKey) {
+         if (disable) {
+           return;
+         }

 
 

-         _createClass$1(CoordRounder, [{
-           key: "round",
-           value: function round(coord) {
-             var node = this.tree.add(coord);
-             var prevNode = this.tree.prev(node);
+         var fixedKey = fixKey(unfixedKey);
+         var res = null;

 
 

-             if (prevNode !== null && cmp(node.key, prevNode.key) === 0) {
-               this.tree.remove(coord);
-               return prevNode.key;
-             }
+         _withStorageEl(function (storageEl) {
+           res = storageEl.getAttribute(fixedKey);
+         });

 
 

-             var nextNode = this.tree.next(node);
+         return res;
+       }

 
 

-             if (nextNode !== null && cmp(node.key, nextNode.key) === 0) {
-               this.tree.remove(coord);
-               return nextNode.key;
-             }
+       function each$3(callback) {
+         _withStorageEl(function (storageEl) {
+           var attributes = storageEl.XMLDocument.documentElement.attributes;

 
 

-             return coord;
+           for (var i = attributes.length - 1; i >= 0; i--) {
+             var attr = attributes[i];
+             callback(storageEl.getAttribute(attr.name), attr.name);

            }
            }

-         }]);
+         });
+       }

 
 

-         return CoordRounder;
-       }(); // singleton available by import
+       function remove$3(unfixedKey) {
+         var fixedKey = fixKey(unfixedKey);

 
 

+         _withStorageEl(function (storageEl) {
+           storageEl.removeAttribute(fixedKey);
+           storageEl.save(storageName);
+         });
+       }

 
 

-       var rounder = new PtRounder();
-       /* Cross Product of two vectors with first point at origin */
+       function clearAll$3() {
+         _withStorageEl(function (storageEl) {
+           var attributes = storageEl.XMLDocument.documentElement.attributes;
+           storageEl.load(storageName);

 
 

-       var crossProduct$1 = function crossProduct(a, b) {
-         return a.x * b.y - a.y * b.x;
-       };
-       /* Dot Product of two vectors with first point at origin */
+           for (var i = attributes.length - 1; i >= 0; i--) {
+             storageEl.removeAttribute(attributes[i].name);
+           }

 
 

+           storageEl.save(storageName);
+         });
+       } // Helpers
+       //////////
+       // In IE7, keys cannot start with a digit or contain certain chars.
+       // See https://github.com/marcuswestin/store.js/issues/40
+       // See https://github.com/marcuswestin/store.js/issues/83

 
 

-       var dotProduct$1 = function dotProduct(a, b) {
-         return a.x * b.x + a.y * b.y;
-       };
-       /* Comparator for two vectors with same starting point */

 
 

+       var forbiddenCharsRegex = new RegExp("[!\"#$%&'()*+,/\\\\:;<=>?@[\\]^`{|}~]", "g");

 
 

-       var compareVectorAngles = function compareVectorAngles(basePt, endPt1, endPt2) {
-         var v1 = {
-           x: endPt1.x - basePt.x,
-           y: endPt1.y - basePt.y
-         };
-         var v2 = {
-           x: endPt2.x - basePt.x,
-           y: endPt2.y - basePt.y
-         };
-         var kross = crossProduct$1(v1, v2);
-         return cmp(kross, 0);
-       };
+       function fixKey(key) {
+         return key.replace(/^\d/, '___$&').replace(forbiddenCharsRegex, '___');
+       }

 
 

-       var length = function length(v) {
-         return Math.sqrt(dotProduct$1(v, v));
-       };
-       /* Get the sine of the angle from pShared -> pAngle to pShaed -> pBase */
+       function _makeIEStorageElFunction() {
+         if (!doc$1 || !doc$1.documentElement || !doc$1.documentElement.addBehavior) {
+           return null;
+         }

 
 

+         var scriptTag = 'script',
+             storageOwner,
+             storageContainer,
+             storageEl; // Since #userData storage applies only to specific paths, we need to
+         // somehow link our data to a specific path.  We choose /favicon.ico
+         // as a pretty safe option, since all browsers already make a request to
+         // this URL anyway and being a 404 will not hurt us here.  We wrap an
+         // iframe pointing to the favicon in an ActiveXObject(htmlfile) object
+         // (see: http://msdn.microsoft.com/en-us/library/aa752574(v=VS.85).aspx)
+         // since the iframe access rules appear to allow direct access and
+         // manipulation of the document element, even for a 404 page.  This
+         // document can be used instead of the current document (which would
+         // have been limited to the current path) to perform #userData storage.

 
 

-       var sineOfAngle = function sineOfAngle(pShared, pBase, pAngle) {
-         var vBase = {
-           x: pBase.x - pShared.x,
-           y: pBase.y - pShared.y
-         };
-         var vAngle = {
-           x: pAngle.x - pShared.x,
-           y: pAngle.y - pShared.y
-         };
-         return crossProduct$1(vAngle, vBase) / length(vAngle) / length(vBase);
-       };
-       /* Get the cosine of the angle from pShared -> pAngle to pShaed -> pBase */
+         try {
+           /* global ActiveXObject */
+           storageContainer = new ActiveXObject('htmlfile');
+           storageContainer.open();
+           storageContainer.write('<' + scriptTag + '>document.w=window</' + scriptTag + '><iframe src="/favicon.ico"></iframe>');
+           storageContainer.close();
+           storageOwner = storageContainer.w.frames[0].document;
+           storageEl = storageOwner.createElement('div');
+         } catch (e) {
+           // somehow ActiveXObject instantiation failed (perhaps some special
+           // security settings or otherwse), fall back to per-path storage
+           storageEl = doc$1.createElement('div');
+           storageOwner = doc$1.body;
+         }

 
 

+         return function (storeFunction) {
+           var args = [].slice.call(arguments, 0);
+           args.unshift(storageEl); // See http://msdn.microsoft.com/en-us/library/ms531081(v=VS.85).aspx
+           // and http://msdn.microsoft.com/en-us/library/ms531424(v=VS.85).aspx

 
 

-       var cosineOfAngle = function cosineOfAngle(pShared, pBase, pAngle) {
-         var vBase = {
-           x: pBase.x - pShared.x,
-           y: pBase.y - pShared.y
-         };
-         var vAngle = {
-           x: pAngle.x - pShared.x,
-           y: pAngle.y - pShared.y
+           storageOwner.appendChild(storageEl);
+           storageEl.addBehavior('#default#userData');
+           storageEl.load(storageName);
+           storeFunction.apply(this, args);
+           storageOwner.removeChild(storageEl);
+           return;

          };
          };

-         return dotProduct$1(vAngle, vBase) / length(vAngle) / length(vBase);
-       };
-       /* Get the x coordinate where the given line (defined by a point and vector)
-        * crosses the horizontal line with the given y coordiante.
-        * In the case of parrallel lines (including overlapping ones) returns null. */
+       }

 
 

+       // doesn't work but cookies do. This implementation is adopted from
+       // https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage

 
 

-       var horizontalIntersection = function horizontalIntersection(pt, v, y) {
-         if (v.y === 0) return null;
-         return {
-           x: pt.x + v.x / v.y * (y - pt.y),
-           y: y
-         };
+       var util$1 = util$6;
+       var Global$1 = util$1.Global;
+       var trim = util$1.trim;
+       var cookieStorage = {
+         name: 'cookieStorage',
+         read: read$2,
+         write: write$2,
+         each: each$2,
+         remove: remove$2,
+         clearAll: clearAll$2

        };
        };

-       /* Get the y coordinate where the given line (defined by a point and vector)
-        * crosses the vertical line with the given x coordiante.
-        * In the case of parrallel lines (including overlapping ones) returns null. */
-
+       var doc = Global$1.document;

 
 

-       var verticalIntersection = function verticalIntersection(pt, v, x) {
-         if (v.x === 0) return null;
-         return {
-           x: x,
-           y: pt.y + v.y / v.x * (x - pt.x)
-         };
-       };
-       /* Get the intersection of two lines, each defined by a base point and a vector.
-        * In the case of parrallel lines (including overlapping ones) returns null. */
+       function read$2(key) {
+         if (!key || !_has(key)) {
+           return null;
+         }

 
 

+         var regexpStr = "(?:^|.*;\\s*)" + escape(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*";
+         return unescape(doc.cookie.replace(new RegExp(regexpStr), "$1"));
+       }

 
 

-       var intersection$1 = function intersection(pt1, v1, pt2, v2) {
-         // take some shortcuts for vertical and horizontal lines
-         // this also ensures we don't calculate an intersection and then discover
-         // it's actually outside the bounding box of the line
-         if (v1.x === 0) return verticalIntersection(pt2, v2, pt1.x);
-         if (v2.x === 0) return verticalIntersection(pt1, v1, pt2.x);
-         if (v1.y === 0) return horizontalIntersection(pt2, v2, pt1.y);
-         if (v2.y === 0) return horizontalIntersection(pt1, v1, pt2.y); // General case for non-overlapping segments.
-         // This algorithm is based on Schneider and Eberly.
-         // http://www.cimec.org.ar/~ncalvo/Schneider_Eberly.pdf - pg 244
+       function each$2(callback) {
+         var cookies = doc.cookie.split(/; ?/g);

 
 

-         var kross = crossProduct$1(v1, v2);
-         if (kross == 0) return null;
-         var ve = {
-           x: pt2.x - pt1.x,
-           y: pt2.y - pt1.y
-         };
-         var d1 = crossProduct$1(ve, v1) / kross;
-         var d2 = crossProduct$1(ve, v2) / kross; // take the average of the two calculations to minimize rounding error
+         for (var i = cookies.length - 1; i >= 0; i--) {
+           if (!trim(cookies[i])) {
+             continue;
+           }

 
 

-         var x1 = pt1.x + d2 * v1.x,
-             x2 = pt2.x + d1 * v2.x;
-         var y1 = pt1.y + d2 * v1.y,
-             y2 = pt2.y + d1 * v2.y;
-         var x = (x1 + x2) / 2;
-         var y = (y1 + y2) / 2;
-         return {
-           x: x,
-           y: y
-         };
-       };
+           var kvp = cookies[i].split('=');
+           var key = unescape(kvp[0]);
+           var val = unescape(kvp[1]);
+           callback(val, key);
+         }
+       }

 
 

-       var SweepEvent$1 = /*#__PURE__*/function () {
-         _createClass$1(SweepEvent, null, [{
-           key: "compare",
-           // for ordering sweep events in the sweep event queue
-           value: function compare(a, b) {
-             // favor event with a point that the sweep line hits first
-             var ptCmp = SweepEvent.comparePoints(a.point, b.point);
-             if (ptCmp !== 0) return ptCmp; // the points are the same, so link them if needed
+       function write$2(key, data) {
+         if (!key) {
+           return;
+         }

 
 

-             if (a.point !== b.point) a.link(b); // favor right events over left
+         doc.cookie = escape(key) + "=" + escape(data) + "; expires=Tue, 19 Jan 2038 03:14:07 GMT; path=/";
+       }

 
 

-             if (a.isLeft !== b.isLeft) return a.isLeft ? 1 : -1; // we have two matching left or right endpoints
-             // ordering of this case is the same as for their segments
+       function remove$2(key) {
+         if (!key || !_has(key)) {
+           return;
+         }

 
 

-             return Segment.compare(a.segment, b.segment);
-           } // for ordering points in sweep line order
+         doc.cookie = escape(key) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/";
+       }

 
 

-         }, {
-           key: "comparePoints",
-           value: function comparePoints(aPt, bPt) {
-             if (aPt.x < bPt.x) return -1;
-             if (aPt.x > bPt.x) return 1;
-             if (aPt.y < bPt.y) return -1;
-             if (aPt.y > bPt.y) return 1;
-             return 0;
-           } // Warning: 'point' input will be modified and re-used (for performance)
+       function clearAll$2() {
+         each$2(function (_, key) {
+           remove$2(key);
+         });
+       }

 
 

-         }]);
+       function _has(key) {
+         return new RegExp("(?:^|;\\s*)" + escape(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=").test(doc.cookie);
+       }

 
 

-         function SweepEvent(point, isLeft) {
-           _classCallCheck$1(this, SweepEvent);
+       var util = util$6;
+       var Global = util.Global;
+       var sessionStorage_1 = {
+         name: 'sessionStorage',
+         read: read$1,
+         write: write$1,
+         each: each$1,
+         remove: remove$1,
+         clearAll: clearAll$1
+       };

 
 

-           if (point.events === undefined) point.events = [this];else point.events.push(this);
-           this.point = point;
-           this.isLeft = isLeft; // this.segment, this.otherSE set by factory
-         }
+       function sessionStorage() {
+         return Global.sessionStorage;
+       }

 
 

-         _createClass$1(SweepEvent, [{
-           key: "link",
-           value: function link(other) {
-             if (other.point === this.point) {
-               throw new Error('Tried to link already linked events');
-             }
+       function read$1(key) {
+         return sessionStorage().getItem(key);
+       }

 
 

-             var otherEvents = other.point.events;
+       function write$1(key, data) {
+         return sessionStorage().setItem(key, data);
+       }

 
 

-             for (var i = 0, iMax = otherEvents.length; i < iMax; i++) {
-               var evt = otherEvents[i];
-               this.point.events.push(evt);
-               evt.point = this.point;
-             }
+       function each$1(fn) {
+         for (var i = sessionStorage().length - 1; i >= 0; i--) {
+           var key = sessionStorage().key(i);
+           fn(read$1(key), key);
+         }
+       }

 
 

-             this.checkForConsuming();
-           }
-           /* Do a pass over our linked events and check to see if any pair
-            * of segments match, and should be consumed. */
+       function remove$1(key) {
+         return sessionStorage().removeItem(key);
+       }

 
 

-         }, {
-           key: "checkForConsuming",
-           value: function checkForConsuming() {
-             // FIXME: The loops in this method run O(n^2) => no good.
-             //        Maintain little ordered sweep event trees?
-             //        Can we maintaining an ordering that avoids the need
-             //        for the re-sorting with getLeftmostComparator in geom-out?
-             // Compare each pair of events to see if other events also match
-             var numEvents = this.point.events.length;
+       function clearAll$1() {
+         return sessionStorage().clear();
+       }

 
 

-             for (var i = 0; i < numEvents; i++) {
-               var evt1 = this.point.events[i];
-               if (evt1.segment.consumedBy !== undefined) continue;
+       // is functions (meaning store.get(), store.set(), etc will all function).
+       // However, stored values will not persist when the browser navigates to
+       // a new page or reloads the current page.

 
 

-               for (var j = i + 1; j < numEvents; j++) {
-                 var evt2 = this.point.events[j];
-                 if (evt2.consumedBy !== undefined) continue;
-                 if (evt1.otherSE.point.events !== evt2.otherSE.point.events) continue;
-                 evt1.segment.consume(evt2.segment);
-               }
-             }
-           }
-         }, {
-           key: "getAvailableLinkedEvents",
-           value: function getAvailableLinkedEvents() {
-             // point.events is always of length 2 or greater
-             var events = [];
+       var memoryStorage_1 = {
+         name: 'memoryStorage',
+         read: read,
+         write: write,
+         each: each,
+         remove: remove,
+         clearAll: clearAll
+       };
+       var memoryStorage = {};

 
 

-             for (var i = 0, iMax = this.point.events.length; i < iMax; i++) {
-               var evt = this.point.events[i];
+       function read(key) {
+         return memoryStorage[key];
+       }

 
 

-               if (evt !== this && !evt.segment.ringOut && evt.segment.isInResult()) {
-                 events.push(evt);
-               }
-             }
+       function write(key, data) {
+         memoryStorage[key] = data;
+       }

 
 

-             return events;
+       function each(callback) {
+         for (var key in memoryStorage) {
+           if (memoryStorage.hasOwnProperty(key)) {
+             callback(memoryStorage[key], key);

            }
            }

-           /**
-            * Returns a comparator function for sorting linked events that will
-            * favor the event that will give us the smallest left-side angle.
-            * All ring construction starts as low as possible heading to the right,
-            * so by always turning left as sharp as possible we'll get polygons
-            * without uncessary loops & holes.
-            *
-            * The comparator function has a compute cache such that it avoids
-            * re-computing already-computed values.
-            */
-
-         }, {
-           key: "getLeftmostComparator",
-           value: function getLeftmostComparator(baseEvent) {
-             var _this = this;
+         }
+       }

 
 

-             var cache = new Map();
+       function remove(key) {
+         delete memoryStorage[key];
+       }

 
 

-             var fillCache = function fillCache(linkedEvent) {
-               var nextEvent = linkedEvent.otherSE;
-               cache.set(linkedEvent, {
-                 sine: sineOfAngle(_this.point, baseEvent.point, nextEvent.point),
-                 cosine: cosineOfAngle(_this.point, baseEvent.point, nextEvent.point)
-               });
-             };
+       function clearAll(key) {
+         memoryStorage = {};
+       }

 
 

-             return function (a, b) {
-               if (!cache.has(a)) fillCache(a);
-               if (!cache.has(b)) fillCache(b);
+       var all = [// Listed in order of usage preference
+       localStorage_1, oldFFGlobalStorage, oldIEUserDataStorage, cookieStorage, sessionStorage_1, memoryStorage_1];

 
 

-               var _cache$get = cache.get(a),
-                   asine = _cache$get.sine,
-                   acosine = _cache$get.cosine;
+       /* eslint-disable */
+       //  json2.js
+       //  2016-10-28
+       //  Public Domain.
+       //  NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+       //  See http://www.JSON.org/js.html
+       //  This code should be minified before deployment.
+       //  See http://javascript.crockford.com/jsmin.html
+       //  USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
+       //  NOT CONTROL.
+       //  This file creates a global JSON object containing two methods: stringify
+       //  and parse. This file provides the ES5 JSON capability to ES3 systems.
+       //  If a project might run on IE8 or earlier, then this file should be included.
+       //  This file does nothing on ES5 systems.
+       //      JSON.stringify(value, replacer, space)
+       //          value       any JavaScript value, usually an object or array.
+       //          replacer    an optional parameter that determines how object
+       //                      values are stringified for objects. It can be a
+       //                      function or an array of strings.
+       //          space       an optional parameter that specifies the indentation
+       //                      of nested structures. If it is omitted, the text will
+       //                      be packed without extra whitespace. If it is a number,
+       //                      it will specify the number of spaces to indent at each
+       //                      level. If it is a string (such as "\t" or "&nbsp;"),
+       //                      it contains the characters used to indent at each level.
+       //          This method produces a JSON text from a JavaScript value.
+       //          When an object value is found, if the object contains a toJSON
+       //          method, its toJSON method will be called and the result will be
+       //          stringified. A toJSON method does not serialize: it returns the
+       //          value represented by the name/value pair that should be serialized,
+       //          or undefined if nothing should be serialized. The toJSON method
+       //          will be passed the key associated with the value, and this will be
+       //          bound to the value.
+       //          For example, this would serialize Dates as ISO strings.
+       //              Date.prototype.toJSON = function (key) {
+       //                  function f(n) {
+       //                      // Format integers to have at least two digits.
+       //                      return (n < 10)
+       //                          ? "0" + n
+       //                          : n;
+       //                  }
+       //                  return this.getUTCFullYear()   + "-" +
+       //                       f(this.getUTCMonth() + 1) + "-" +
+       //                       f(this.getUTCDate())      + "T" +
+       //                       f(this.getUTCHours())     + ":" +
+       //                       f(this.getUTCMinutes())   + ":" +
+       //                       f(this.getUTCSeconds())   + "Z";
+       //              };
+       //          You can provide an optional replacer method. It will be passed the
+       //          key and value of each member, with this bound to the containing
+       //          object. The value that is returned from your method will be
+       //          serialized. If your method returns undefined, then the member will
+       //          be excluded from the serialization.
+       //          If the replacer parameter is an array of strings, then it will be
+       //          used to select the members to be serialized. It filters the results
+       //          such that only members with keys listed in the replacer array are
+       //          stringified.
+       //          Values that do not have JSON representations, such as undefined or
+       //          functions, will not be serialized. Such values in objects will be
+       //          dropped; in arrays they will be replaced with null. You can use
+       //          a replacer function to replace those with JSON values.
+       //          JSON.stringify(undefined) returns undefined.
+       //          The optional space parameter produces a stringification of the
+       //          value that is filled with line breaks and indentation to make it
+       //          easier to read.
+       //          If the space parameter is a non-empty string, then that string will
+       //          be used for indentation. If the space parameter is a number, then
+       //          the indentation will be that many spaces.
+       //          Example:
+       //          text = JSON.stringify(["e", {pluribus: "unum"}]);
+       //          // text is '["e",{"pluribus":"unum"}]'
+       //          text = JSON.stringify(["e", {pluribus: "unum"}], null, "\t");
+       //          // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
+       //          text = JSON.stringify([new Date()], function (key, value) {
+       //              return this[key] instanceof Date
+       //                  ? "Date(" + this[key] + ")"
+       //                  : value;
+       //          });
+       //          // text is '["Date(---current time---)"]'
+       //      JSON.parse(text, reviver)
+       //          This method parses a JSON text to produce an object or array.
+       //          It can throw a SyntaxError exception.
+       //          The optional reviver parameter is a function that can filter and
+       //          transform the results. It receives each of the keys and values,
+       //          and its return value is used instead of the original value.
+       //          If it returns what it received, then the structure is not modified.
+       //          If it returns undefined then the member is deleted.
+       //          Example:
+       //          // Parse the text. Values that look like ISO date strings will
+       //          // be converted to Date objects.
+       //          myData = JSON.parse(text, function (key, value) {
+       //              var a;
+       //              if (typeof value === "string") {
+       //                  a =
+       //   /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
+       //                  if (a) {
+       //                      return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+       //                          +a[5], +a[6]));
+       //                  }
+       //              }
+       //              return value;
+       //          });
+       //          myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
+       //              var d;
+       //              if (typeof value === "string" &&
+       //                      value.slice(0, 5) === "Date(" &&
+       //                      value.slice(-1) === ")") {
+       //                  d = new Date(value.slice(5, -1));
+       //                  if (d) {
+       //                      return d;
+       //                  }
+       //              }
+       //              return value;
+       //          });
+       //  This is a reference implementation. You are free to copy, modify, or
+       //  redistribute.

 
 

-               var _cache$get2 = cache.get(b),
-                   bsine = _cache$get2.sine,
-                   bcosine = _cache$get2.cosine; // both on or above x-axis
+       /*jslint
+           eval, for, this
+       */

 
 

+       /*property
+           JSON, apply, call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
+           getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
+           lastIndex, length, parse, prototype, push, replace, slice, stringify,
+           test, toJSON, toString, valueOf
+       */
+       // Create a JSON object only if one does not already exist. We create the
+       // methods in a closure to avoid creating global variables.
+       if ((typeof JSON === "undefined" ? "undefined" : _typeof(JSON)) !== "object") {
+         JSON = {};
+       }

 
 

-               if (asine >= 0 && bsine >= 0) {
-                 if (acosine < bcosine) return 1;
-                 if (acosine > bcosine) return -1;
-                 return 0;
-               } // both below x-axis
+       (function () {

 
 

+         var rx_one = /^[\],:{}\s]*$/;
+         var rx_two = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
+         var rx_three = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
+         var rx_four = /(?:^|:|,)(?:\s*\[)+/g;
+         var rx_escapable = /[\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
+         var rx_dangerous = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;

 
 

-               if (asine < 0 && bsine < 0) {
-                 if (acosine < bcosine) return -1;
-                 if (acosine > bcosine) return 1;
-                 return 0;
-               } // one above x-axis, one below
+         function f(n) {
+           // Format integers to have at least two digits.
+           return n < 10 ? "0" + n : n;
+         }

 
 

+         function this_value() {
+           return this.valueOf();
+         }

 
 

-               if (bsine < asine) return -1;
-               if (bsine > asine) return 1;
-               return 0;
-             };
-           }
-         }]);
+         if (typeof Date.prototype.toJSON !== "function") {
+           Date.prototype.toJSON = function () {
+             return isFinite(this.valueOf()) ? this.getUTCFullYear() + "-" + f(this.getUTCMonth() + 1) + "-" + f(this.getUTCDate()) + "T" + f(this.getUTCHours()) + ":" + f(this.getUTCMinutes()) + ":" + f(this.getUTCSeconds()) + "Z" : null;
+           };

 
 

-         return SweepEvent;
-       }(); // segments and sweep events when all else is identical
+           Boolean.prototype.toJSON = this_value;
+           Number.prototype.toJSON = this_value;
+           String.prototype.toJSON = this_value;
+         }

 
 

+         var gap;
+         var indent;
+         var meta;
+         var rep;

 
 

-       var segmentId = 0;
+         function quote(string) {
+           // If the string contains no control characters, no quote characters, and no
+           // backslash characters, then we can safely slap some quotes around it.
+           // Otherwise we must also replace the offending characters with safe escape
+           // sequences.
+           rx_escapable.lastIndex = 0;
+           return rx_escapable.test(string) ? "\"" + string.replace(rx_escapable, function (a) {
+             var c = meta[a];
+             return typeof c === "string" ? c : "\\u" + ("0000" + a.charCodeAt(0).toString(16)).slice(-4);
+           }) + "\"" : "\"" + string + "\"";
+         }

 
 

-       var Segment = /*#__PURE__*/function () {
-         _createClass$1(Segment, null, [{
-           key: "compare",
+         function str(key, holder) {
+           // Produce a string from holder[key].
+           var i; // The loop counter.

 
 

-           /* This compare() function is for ordering segments in the sweep
-            * line tree, and does so according to the following criteria:
-            *
-            * Consider the vertical line that lies an infinestimal step to the
-            * right of the right-more of the two left endpoints of the input
-            * segments. Imagine slowly moving a point up from negative infinity
-            * in the increasing y direction. Which of the two segments will that
-            * point intersect first? That segment comes 'before' the other one.
-            *
-            * If neither segment would be intersected by such a line, (if one
-            * or more of the segments are vertical) then the line to be considered
-            * is directly on the right-more of the two left inputs.
-            */
-           value: function compare(a, b) {
-             var alx = a.leftSE.point.x;
-             var blx = b.leftSE.point.x;
-             var arx = a.rightSE.point.x;
-             var brx = b.rightSE.point.x; // check if they're even in the same vertical plane
+           var k; // The member key.

 
 

-             if (brx < alx) return 1;
-             if (arx < blx) return -1;
-             var aly = a.leftSE.point.y;
-             var bly = b.leftSE.point.y;
-             var ary = a.rightSE.point.y;
-             var bry = b.rightSE.point.y; // is left endpoint of segment B the right-more?
+           var v; // The member value.

 
 

-             if (alx < blx) {
-               // are the two segments in the same horizontal plane?
-               if (bly < aly && bly < ary) return 1;
-               if (bly > aly && bly > ary) return -1; // is the B left endpoint colinear to segment A?
+           var length;
+           var mind = gap;
+           var partial;
+           var value = holder[key]; // If the value has a toJSON method, call it to obtain a replacement value.

 
 

-               var aCmpBLeft = a.comparePoint(b.leftSE.point);
-               if (aCmpBLeft < 0) return 1;
-               if (aCmpBLeft > 0) return -1; // is the A right endpoint colinear to segment B ?
+           if (value && _typeof(value) === "object" && typeof value.toJSON === "function") {
+             value = value.toJSON(key);
+           } // If we were called with a replacer function, then call the replacer to
+           // obtain a replacement value.

 
 

-               var bCmpARight = b.comparePoint(a.rightSE.point);
-               if (bCmpARight !== 0) return bCmpARight; // colinear segments, consider the one with left-more
-               // left endpoint to be first (arbitrary?)

 
 

-               return -1;
-             } // is left endpoint of segment A the right-more?
+           if (typeof rep === "function") {
+             value = rep.call(holder, key, value);
+           } // What happens next depends on the value's type.

 
 
 
 

-             if (alx > blx) {
-               if (aly < bly && aly < bry) return -1;
-               if (aly > bly && aly > bry) return 1; // is the A left endpoint colinear to segment B?
+           switch (_typeof(value)) {
+             case "string":
+               return quote(value);

 
 

-               var bCmpALeft = b.comparePoint(a.leftSE.point);
-               if (bCmpALeft !== 0) return bCmpALeft; // is the B right endpoint colinear to segment A?
+             case "number":
+               // JSON numbers must be finite. Encode non-finite numbers as null.
+               return isFinite(value) ? String(value) : "null";

 
 

-               var aCmpBRight = a.comparePoint(b.rightSE.point);
-               if (aCmpBRight < 0) return 1;
-               if (aCmpBRight > 0) return -1; // colinear segments, consider the one with left-more
-               // left endpoint to be first (arbitrary?)
+             case "boolean":
+             case "null":
+               // If the value is a boolean or null, convert it to a string. Note:
+               // typeof null does not produce "null". The case is included here in
+               // the remote chance that this gets fixed someday.
+               return String(value);
+             // If the type is "object", we might be dealing with an object or an array or
+             // null.

 
 

-               return 1;
-             } // if we get here, the two left endpoints are in the same
-             // vertical plane, ie alx === blx
-             // consider the lower left-endpoint to come first
+             case "object":
+               // Due to a specification blunder in ECMAScript, typeof null is "object",
+               // so watch out for that case.
+               if (!value) {
+                 return "null";
+               } // Make an array to hold the partial results of stringifying this object value.

 
 
 
 

-             if (aly < bly) return -1;
-             if (aly > bly) return 1; // left endpoints are identical
-             // check for colinearity by using the left-more right endpoint
-             // is the A right endpoint more left-more?
+               gap += indent;
+               partial = []; // Is the value an array?

 
 

-             if (arx < brx) {
-               var _bCmpARight = b.comparePoint(a.rightSE.point);
+               if (Object.prototype.toString.apply(value) === "[object Array]") {
+                 // The value is an array. Stringify every element. Use null as a placeholder
+                 // for non-JSON values.
+                 length = value.length;

 
 

-               if (_bCmpARight !== 0) return _bCmpARight;
-             } // is the B right endpoint more left-more?
+                 for (i = 0; i < length; i += 1) {
+                   partial[i] = str(i, value) || "null";
+                 } // Join all of the elements together, separated with commas, and wrap them in
+                 // brackets.

 
 
 
 

-             if (arx > brx) {
-               var _aCmpBRight = a.comparePoint(b.rightSE.point);
+                 v = partial.length === 0 ? "[]" : gap ? "[\n" + gap + partial.join(",\n" + gap) + "\n" + mind + "]" : "[" + partial.join(",") + "]";
+                 gap = mind;
+                 return v;
+               } // If the replacer is an array, use it to select the members to be stringified.

 
 

-               if (_aCmpBRight < 0) return 1;
-               if (_aCmpBRight > 0) return -1;
-             }

 
 

-             if (arx !== brx) {
-               // are these two [almost] vertical segments with opposite orientation?
-               // if so, the one with the lower right endpoint comes first
-               var ay = ary - aly;
-               var ax = arx - alx;
-               var by = bry - bly;
-               var bx = brx - blx;
-               if (ay > ax && by < bx) return 1;
-               if (ay < ax && by > bx) return -1;
-             } // we have colinear segments with matching orientation
-             // consider the one with more left-more right endpoint to be first
+               if (rep && _typeof(rep) === "object") {
+                 length = rep.length;

 
 

+                 for (i = 0; i < length; i += 1) {
+                   if (typeof rep[i] === "string") {
+                     k = rep[i];
+                     v = str(k, value);

 
 

-             if (arx > brx) return 1;
-             if (arx < brx) return -1; // if we get here, two two right endpoints are in the same
-             // vertical plane, ie arx === brx
-             // consider the lower right-endpoint to come first
+                     if (v) {
+                       partial.push(quote(k) + (gap ? ": " : ":") + v);
+                     }
+                   }
+                 }
+               } else {
+                 // Otherwise, iterate through all of the keys in the object.
+                 for (k in value) {
+                   if (Object.prototype.hasOwnProperty.call(value, k)) {
+                     v = str(k, value);

 
 

-             if (ary < bry) return -1;
-             if (ary > bry) return 1; // right endpoints identical as well, so the segments are idential
-             // fall back on creation order as consistent tie-breaker
+                     if (v) {
+                       partial.push(quote(k) + (gap ? ": " : ":") + v);
+                     }
+                   }
+                 }
+               } // Join all of the member texts together, separated with commas,
+               // and wrap them in braces.

 
 

-             if (a.id < b.id) return -1;
-             if (a.id > b.id) return 1; // identical segment, ie a === b

 
 

-             return 0;
+               v = partial.length === 0 ? "{}" : gap ? "{\n" + gap + partial.join(",\n" + gap) + "\n" + mind + "}" : "{" + partial.join(",") + "}";
+               gap = mind;
+               return v;

            }
            }

-           /* Warning: a reference to ringWindings input will be stored,
-            *  and possibly will be later modified */
+         } // If the JSON object does not yet have a stringify method, give it one.

 
 

-         }]);

 
 

-         function Segment(leftSE, rightSE, rings, windings) {
-           _classCallCheck$1(this, Segment);
+         if (typeof JSON.stringify !== "function") {
+           meta = {
+             // table of character substitutions
+             "\b": "\\b",
+             "\t": "\\t",
+             "\n": "\\n",
+             "\f": "\\f",
+             "\r": "\\r",
+             "\"": "\\\"",
+             "\\": "\\\\"
+           };

 
 

-           this.id = ++segmentId;
-           this.leftSE = leftSE;
-           leftSE.segment = this;
-           leftSE.otherSE = rightSE;
-           this.rightSE = rightSE;
-           rightSE.segment = this;
-           rightSE.otherSE = leftSE;
-           this.rings = rings;
-           this.windings = windings; // left unset for performance, set later in algorithm
-           // this.ringOut, this.consumedBy, this.prev
-         }
+           JSON.stringify = function (value, replacer, space) {
+             // The stringify method takes a value and an optional replacer, and an optional
+             // space parameter, and returns a JSON text. The replacer can be a function
+             // that can replace values, or an array of strings that will select the keys.
+             // A default replacer method can be provided. Use of the space parameter can
+             // produce text that is more easily readable.
+             var i;
+             gap = "";
+             indent = ""; // If the space parameter is a number, make an indent string containing that
+             // many spaces.

 
 

-         _createClass$1(Segment, [{
-           key: "replaceRightSE",
+             if (typeof space === "number") {
+               for (i = 0; i < space; i += 1) {
+                 indent += " ";
+               } // If the space parameter is a string, it will be used as the indent string.

 
 

-           /* When a segment is split, the rightSE is replaced with a new sweep event */
-           value: function replaceRightSE(newRightSE) {
-             this.rightSE = newRightSE;
-             this.rightSE.segment = this;
-             this.rightSE.otherSE = this.leftSE;
-             this.leftSE.otherSE = this.rightSE;
-           }
-         }, {
-           key: "bbox",
-           value: function bbox() {
-             var y1 = this.leftSE.point.y;
-             var y2 = this.rightSE.point.y;
-             return {
-               ll: {
-                 x: this.leftSE.point.x,
-                 y: y1 < y2 ? y1 : y2
-               },
-               ur: {
-                 x: this.rightSE.point.x,
-                 y: y1 > y2 ? y1 : y2
-               }
-             };
-           }
-           /* A vector from the left point to the right */
+             } else if (typeof space === "string") {
+               indent = space;
+             } // If there is a replacer, it must be a function or an array.
+             // Otherwise, throw an error.

 
 

-         }, {
-           key: "vector",
-           value: function vector() {
-             return {
-               x: this.rightSE.point.x - this.leftSE.point.x,
-               y: this.rightSE.point.y - this.leftSE.point.y
-             };
-           }
-         }, {
-           key: "isAnEndpoint",
-           value: function isAnEndpoint(pt) {
-             return pt.x === this.leftSE.point.x && pt.y === this.leftSE.point.y || pt.x === this.rightSE.point.x && pt.y === this.rightSE.point.y;
-           }
-           /* Compare this segment with a point.
-            *
-            * A point P is considered to be colinear to a segment if there
-            * exists a distance D such that if we travel along the segment
-            * from one * endpoint towards the other a distance D, we find
-            * ourselves at point P.
-            *
-            * Return value indicates:
-            *
-            *   1: point lies above the segment (to the left of vertical)
-            *   0: point is colinear to segment
-            *  -1: point lies below the segment (to the right of vertical)
-            */

 
 

-         }, {
-           key: "comparePoint",
-           value: function comparePoint(point) {
-             if (this.isAnEndpoint(point)) return 0;
-             var lPt = this.leftSE.point;
-             var rPt = this.rightSE.point;
-             var v = this.vector(); // Exactly vertical segments.
+             rep = replacer;

 
 

-             if (lPt.x === rPt.x) {
-               if (point.x === lPt.x) return 0;
-               return point.x < lPt.x ? 1 : -1;
-             } // Nearly vertical segments with an intersection.
-             // Check to see where a point on the line with matching Y coordinate is.
+             if (replacer && typeof replacer !== "function" && (_typeof(replacer) !== "object" || typeof replacer.length !== "number")) {
+               throw new Error("JSON.stringify");
+             } // Make a fake root object containing our value under the key of "".
+             // Return the result of stringifying the value.

 
 
 
 

-             var yDist = (point.y - lPt.y) / v.y;
-             var xFromYDist = lPt.x + yDist * v.x;
-             if (point.x === xFromYDist) return 0; // General case.
-             // Check to see where a point on the line with matching X coordinate is.
+             return str("", {
+               "": value
+             });
+           };
+         } // If the JSON object does not yet have a parse method, give it one.

 
 

-             var xDist = (point.x - lPt.x) / v.x;
-             var yFromXDist = lPt.y + xDist * v.y;
-             if (point.y === yFromXDist) return 0;
-             return point.y < yFromXDist ? -1 : 1;
-           }
-           /**
-            * Given another segment, returns the first non-trivial intersection
-            * between the two segments (in terms of sweep line ordering), if it exists.
-            *
-            * A 'non-trivial' intersection is one that will cause one or both of the
-            * segments to be split(). As such, 'trivial' vs. 'non-trivial' intersection:
-            *
-            *   * endpoint of segA with endpoint of segB --> trivial
-            *   * endpoint of segA with point along segB --> non-trivial
-            *   * endpoint of segB with point along segA --> non-trivial
-            *   * point along segA with point along segB --> non-trivial
-            *
-            * If no non-trivial intersection exists, return null
-            * Else, return null.
-            */

 
 

-         }, {
-           key: "getIntersection",
-           value: function getIntersection(other) {
-             // If bboxes don't overlap, there can't be any intersections
-             var tBbox = this.bbox();
-             var oBbox = other.bbox();
-             var bboxOverlap = getBboxOverlap(tBbox, oBbox);
-             if (bboxOverlap === null) return null; // We first check to see if the endpoints can be considered intersections.
-             // This will 'snap' intersections to endpoints if possible, and will
-             // handle cases of colinearity.
+         if (typeof JSON.parse !== "function") {
+           JSON.parse = function (text, reviver) {
+             // The parse method takes a text and an optional reviver function, and returns
+             // a JavaScript value if the text is a valid JSON text.
+             var j;

 
 

-             var tlp = this.leftSE.point;
-             var trp = this.rightSE.point;
-             var olp = other.leftSE.point;
-             var orp = other.rightSE.point; // does each endpoint touch the other segment?
-             // note that we restrict the 'touching' definition to only allow segments
-             // to touch endpoints that lie forward from where we are in the sweep line pass
+             function walk(holder, key) {
+               // The walk method is used to recursively walk the resulting structure so
+               // that modifications can be made.
+               var k;
+               var v;
+               var value = holder[key];

 
 

-             var touchesOtherLSE = isInBbox(tBbox, olp) && this.comparePoint(olp) === 0;
-             var touchesThisLSE = isInBbox(oBbox, tlp) && other.comparePoint(tlp) === 0;
-             var touchesOtherRSE = isInBbox(tBbox, orp) && this.comparePoint(orp) === 0;
-             var touchesThisRSE = isInBbox(oBbox, trp) && other.comparePoint(trp) === 0; // do left endpoints match?
+               if (value && _typeof(value) === "object") {
+                 for (k in value) {
+                   if (Object.prototype.hasOwnProperty.call(value, k)) {
+                     v = walk(value, k);

 
 

-             if (touchesThisLSE && touchesOtherLSE) {
-               // these two cases are for colinear segments with matching left
-               // endpoints, and one segment being longer than the other
-               if (touchesThisRSE && !touchesOtherRSE) return trp;
-               if (!touchesThisRSE && touchesOtherRSE) return orp; // either the two segments match exactly (two trival intersections)
-               // or just on their left endpoint (one trivial intersection
+                     if (v !== undefined) {
+                       value[k] = v;
+                     } else {
+                       delete value[k];
+                     }
+                   }
+                 }
+               }

 
 

-               return null;
-             } // does this left endpoint matches (other doesn't)
+               return reviver.call(holder, key, value);
+             } // Parsing happens in four stages. In the first stage, we replace certain
+             // Unicode characters with escape sequences. JavaScript handles many characters
+             // incorrectly, either silently deleting them, or treating them as line endings.

 
 
 
 

-             if (touchesThisLSE) {
-               // check for segments that just intersect on opposing endpoints
-               if (touchesOtherRSE) {
-                 if (tlp.x === orp.x && tlp.y === orp.y) return null;
-               } // t-intersection on left endpoint
+             text = String(text);
+             rx_dangerous.lastIndex = 0;

 
 

+             if (rx_dangerous.test(text)) {
+               text = text.replace(rx_dangerous, function (a) {
+                 return "\\u" + ("0000" + a.charCodeAt(0).toString(16)).slice(-4);
+               });
+             } // In the second stage, we run the text against regular expressions that look
+             // for non-JSON patterns. We are especially concerned with "()" and "new"
+             // because they can cause invocation, and "=" because it can cause mutation.
+             // But just to be safe, we want to reject all unexpected forms.
+             // We split the second stage into 4 regexp operations in order to work around
+             // crippling inefficiencies in IE's and Safari's regexp engines. First we
+             // replace the JSON backslash pairs with "@" (a non-JSON character). Second, we
+             // replace all simple value tokens with "]" characters. Third, we delete all
+             // open brackets that follow a colon or comma or that begin the text. Finally,
+             // we look to see that the remaining characters are only whitespace or "]" or
+             // "," or ":" or "{" or "}". If that is so, then the text is safe for eval.

 
 

-               return tlp;
-             } // does other left endpoint matches (this doesn't)

 
 

+             if (rx_one.test(text.replace(rx_two, "@").replace(rx_three, "]").replace(rx_four, ""))) {
+               // In the third stage we use the eval function to compile the text into a
+               // JavaScript structure. The "{" operator is subject to a syntactic ambiguity
+               // in JavaScript: it can begin a block or an object literal. We wrap the text
+               // in parens to eliminate the ambiguity.
+               j = eval("(" + text + ")"); // In the optional fourth stage, we recursively walk the new structure, passing
+               // each name/value pair to a reviver function for possible transformation.

 
 

-             if (touchesOtherLSE) {
-               // check for segments that just intersect on opposing endpoints
-               if (touchesThisRSE) {
-                 if (trp.x === olp.x && trp.y === olp.y) return null;
-               } // t-intersection on left endpoint
+               return typeof reviver === "function" ? walk({
+                 "": j
+               }, "") : j;
+             } // If the text is not JSON parseable, then a SyntaxError is thrown.

 
 
 
 

-               return olp;
-             } // trivial intersection on right endpoints
+             throw new SyntaxError("JSON.parse");
+           };
+         }
+       })();

 
 

+       var json2 = json2Plugin;

 
 

-             if (touchesThisRSE && touchesOtherRSE) return null; // t-intersections on just one right endpoint
+       function json2Plugin() {
+         return {};
+       }

 
 

-             if (touchesThisRSE) return trp;
-             if (touchesOtherRSE) return orp; // None of our endpoints intersect. Look for a general intersection between
-             // infinite lines laid over the segments
+       var engine = storeEngine;
+       var storages = all;
+       var plugins = [json2];
+       var store_legacy = engine.createStore(storages, plugins);

 
 

-             var pt = intersection$1(tlp, this.vector(), olp, other.vector()); // are the segments parrallel? Note that if they were colinear with overlap,
-             // they would have an endpoint intersection and that case was already handled above
+       var immutable = extend;
+       var hasOwnProperty = Object.prototype.hasOwnProperty;

 
 

-             if (pt === null) return null; // is the intersection found between the lines not on the segments?
+       function extend() {
+         var target = {};

 
 

-             if (!isInBbox(bboxOverlap, pt)) return null; // round the the computed point if needed
+         for (var i = 0; i < arguments.length; i++) {
+           var source = arguments[i];

 
 

-             return rounder.round(pt.x, pt.y);
+           for (var key in source) {
+             if (hasOwnProperty.call(source, key)) {
+               target[key] = source[key];
+             }

            }
            }

-           /**
-            * Split the given segment into multiple segments on the given points.
-            *  * Each existing segment will retain its leftSE and a new rightSE will be
-            *    generated for it.
-            *  * A new segment will be generated which will adopt the original segment's
-            *    rightSE, and a new leftSE will be generated for it.
-            *  * If there are more than two points given to split on, new segments
-            *    in the middle will be generated with new leftSE and rightSE's.
-            *  * An array of the newly generated SweepEvents will be returned.
-            *
-            * Warning: input array of points is modified
-            */
+         }

 
 

-         }, {
-           key: "split",
-           value: function split(point) {
-             var newEvents = [];
-             var alreadyLinked = point.events !== undefined;
-             var newLeftSE = new SweepEvent$1(point, true);
-             var newRightSE = new SweepEvent$1(point, false);
-             var oldRightSE = this.rightSE;
-             this.replaceRightSE(newRightSE);
-             newEvents.push(newRightSE);
-             newEvents.push(newLeftSE);
-             var newSeg = new Segment(newLeftSE, oldRightSE, this.rings.slice(), this.windings.slice()); // when splitting a nearly vertical downward-facing segment,
-             // sometimes one of the resulting new segments is vertical, in which
-             // case its left and right events may need to be swapped
+         return target;
+       }

 
 

-             if (SweepEvent$1.comparePoints(newSeg.leftSE.point, newSeg.rightSE.point) > 0) {
-               newSeg.swapEvents();
-             }
+       var ohauth = ohauth_1;
+       var resolveUrl = resolveUrl$1.exports;
+       var store = store_legacy;
+       var xtend = immutable; // # osm-auth
+       //
+       // This code is only compatible with IE10+ because the [XDomainRequest](http://bit.ly/LfO7xo)
+       // object, IE<10's idea of [CORS](http://en.wikipedia.org/wiki/Cross-origin_resource_sharing),
+       // does not support custom headers, which this uses everywhere.

 
 

-             if (SweepEvent$1.comparePoints(this.leftSE.point, this.rightSE.point) > 0) {
-               this.swapEvents();
-             } // in the point we just used to create new sweep events with was already
-             // linked to other events, we need to check if either of the affected
-             // segments should be consumed
+       var osmAuth = function osmAuth(o) {
+         var oauth = {}; // authenticated users will also have a request token secret, but it's
+         // not used in transactions with the server

 
 

+         oauth.authenticated = function () {
+           return !!(token('oauth_token') && token('oauth_token_secret'));
+         };

 
 

-             if (alreadyLinked) {
-               newLeftSE.checkForConsuming();
-               newRightSE.checkForConsuming();
-             }
+         oauth.logout = function () {
+           token('oauth_token', '');
+           token('oauth_token_secret', '');
+           token('oauth_request_token_secret', '');
+           return oauth;
+         }; // TODO: detect lack of click event

 
 

-             return newEvents;
-           }
-           /* Swap which event is left and right */

 
 

-         }, {
-           key: "swapEvents",
-           value: function swapEvents() {
-             var tmpEvt = this.rightSE;
-             this.rightSE = this.leftSE;
-             this.leftSE = tmpEvt;
-             this.leftSE.isLeft = true;
-             this.rightSE.isLeft = false;
+         oauth.authenticate = function (callback) {
+           if (oauth.authenticated()) return callback();
+           oauth.logout(); // ## Getting a request token

 
 

-             for (var i = 0, iMax = this.windings.length; i < iMax; i++) {
-               this.windings[i] *= -1;
-             }
-           }
-           /* Consume another segment. We take their rings under our wing
-            * and mark them as consumed. Use for perfectly overlapping segments */
+           var params = timenonce(getAuth(o)),
+               url = o.url + '/oauth/request_token';
+           params.oauth_signature = ohauth.signature(o.oauth_secret, '', ohauth.baseString('POST', url, params));

 
 

-         }, {
-           key: "consume",
-           value: function consume(other) {
-             var consumer = this;
-             var consumee = other;
+           if (!o.singlepage) {
+             // Create a 600x550 popup window in the center of the screen
+             var w = 600,
+                 h = 550,
+                 settings = [['width', w], ['height', h], ['left', screen.width / 2 - w / 2], ['top', screen.height / 2 - h / 2]].map(function (x) {
+               return x.join('=');
+             }).join(','),
+                 popup = window.open('about:blank', 'oauth_window', settings);
+             oauth.popupWindow = popup;

 
 

-             while (consumer.consumedBy) {
-               consumer = consumer.consumedBy;
+             if (!popup) {
+               var error = new Error('Popup was blocked');
+               error.status = 'popup-blocked';
+               throw error;

              }
              }

+           } // Request a request token. When this is complete, the popup
+           // window is redirected to OSM's authorization page.

 
 

-             while (consumee.consumedBy) {
-               consumee = consumee.consumedBy;
+
+           ohauth.xhr('POST', url, params, null, {}, reqTokenDone);
+           o.loading();
+
+           function reqTokenDone(err, xhr) {
+             o.done();
+             if (err) return callback(err);
+             var resp = ohauth.stringQs(xhr.response);
+             token('oauth_request_token_secret', resp.oauth_token_secret);
+             var authorize_url = o.url + '/oauth/authorize?' + ohauth.qsString({
+               oauth_token: resp.oauth_token,
+               oauth_callback: resolveUrl(o.landing)
+             });
+
+             if (o.singlepage) {
+               location.href = authorize_url;
+             } else {
+               popup.location = authorize_url;

              }
              }

+           } // Called by a function in a landing page, in the popup window. The
+           // window closes itself.

 
 

-             var cmp = Segment.compare(consumer, consumee);
-             if (cmp === 0) return; // already consumed
-             // the winner of the consumption is the earlier segment
-             // according to sweep line ordering

 
 

-             if (cmp > 0) {
-               var tmp = consumer;
-               consumer = consumee;
-               consumee = tmp;
-             } // make sure a segment doesn't consume it's prev
+           window.authComplete = function (token) {
+             var oauth_token = ohauth.stringQs(token.split('?')[1]);
+             get_access_token(oauth_token.oauth_token);
+             delete window.authComplete;
+           }; // ## Getting an request token
+           //
+           // At this point we have an `oauth_token`, brought in from a function
+           // call on a landing page popup.

 
 
 
 

-             if (consumer.prev === consumee) {
-               var _tmp = consumer;
-               consumer = consumee;
-               consumee = _tmp;
-             }
+           function get_access_token(oauth_token) {
+             var url = o.url + '/oauth/access_token',
+                 params = timenonce(getAuth(o)),
+                 request_token_secret = token('oauth_request_token_secret');
+             params.oauth_token = oauth_token;
+             params.oauth_signature = ohauth.signature(o.oauth_secret, request_token_secret, ohauth.baseString('POST', url, params)); // ## Getting an access token
+             //
+             // The final token required for authentication. At this point
+             // we have a `request token secret`

 
 

-             for (var i = 0, iMax = consumee.rings.length; i < iMax; i++) {
-               var ring = consumee.rings[i];
-               var winding = consumee.windings[i];
-               var index = consumer.rings.indexOf(ring);
+             ohauth.xhr('POST', url, params, null, {}, accessTokenDone);
+             o.loading();
+           }

 
 

-               if (index === -1) {
-                 consumer.rings.push(ring);
-                 consumer.windings.push(winding);
-               } else consumer.windings[index] += winding;
+           function accessTokenDone(err, xhr) {
+             o.done();
+             if (err) return callback(err);
+             var access_token = ohauth.stringQs(xhr.response);
+             token('oauth_token', access_token.oauth_token);
+             token('oauth_token_secret', access_token.oauth_token_secret);
+             callback(null, oauth);
+           }
+         };
+
+         oauth.bringPopupWindowToFront = function () {
+           var brougtPopupToFront = false;
+
+           try {
+             // This may cause a cross-origin error:
+             // `DOMException: Blocked a frame with origin "..." from accessing a cross-origin frame.`
+             if (oauth.popupWindow && !oauth.popupWindow.closed) {
+               oauth.popupWindow.focus();
+               brougtPopupToFront = true;

              }
              }

+           } catch (err) {// Bringing popup window to front failed (probably because of the cross-origin error mentioned above)
+           }

 
 

-             consumee.rings = null;
-             consumee.windings = null;
-             consumee.consumedBy = consumer; // mark sweep events consumed as to maintain ordering in sweep event queue
+           return brougtPopupToFront;
+         };

 
 

-             consumee.leftSE.consumedBy = consumer.leftSE;
-             consumee.rightSE.consumedBy = consumer.rightSE;
+         oauth.bootstrapToken = function (oauth_token, callback) {
+           // ## Getting an request token
+           // At this point we have an `oauth_token`, brought in from a function
+           // call on a landing page popup.
+           function get_access_token(oauth_token) {
+             var url = o.url + '/oauth/access_token',
+                 params = timenonce(getAuth(o)),
+                 request_token_secret = token('oauth_request_token_secret');
+             params.oauth_token = oauth_token;
+             params.oauth_signature = ohauth.signature(o.oauth_secret, request_token_secret, ohauth.baseString('POST', url, params)); // ## Getting an access token
+             // The final token required for authentication. At this point
+             // we have a `request token secret`
+
+             ohauth.xhr('POST', url, params, null, {}, accessTokenDone);
+             o.loading();

            }
            }

-           /* The first segment previous segment chain that is in the result */

 
 

-         }, {
-           key: "prevInResult",
-           value: function prevInResult() {
-             if (this._prevInResult !== undefined) return this._prevInResult;
-             if (!this.prev) this._prevInResult = null;else if (this.prev.isInResult()) this._prevInResult = this.prev;else this._prevInResult = this.prev.prevInResult();
-             return this._prevInResult;
+           function accessTokenDone(err, xhr) {
+             o.done();
+             if (err) return callback(err);
+             var access_token = ohauth.stringQs(xhr.response);
+             token('oauth_token', access_token.oauth_token);
+             token('oauth_token_secret', access_token.oauth_token_secret);
+             callback(null, oauth);

            }
            }

-         }, {
-           key: "beforeState",
-           value: function beforeState() {
-             if (this._beforeState !== undefined) return this._beforeState;
-             if (!this.prev) this._beforeState = {
-               rings: [],
-               windings: [],
-               multiPolys: []
-             };else {
-               var seg = this.prev.consumedBy || this.prev;
-               this._beforeState = seg.afterState();
+
+           get_access_token(oauth_token);
+         }; // # xhr
+         //
+         // A single XMLHttpRequest wrapper that does authenticated calls if the
+         // user has logged in.
+
+
+         oauth.xhr = function (options, callback) {
+           if (!oauth.authenticated()) {
+             if (o.auto) {
+               return oauth.authenticate(run);
+             } else {
+               callback('not authenticated', null);
+               return;

              }
              }

-             return this._beforeState;
+           } else {
+             return run();

            }
            }

-         }, {
-           key: "afterState",
-           value: function afterState() {
-             if (this._afterState !== undefined) return this._afterState;
-             var beforeState = this.beforeState();
-             this._afterState = {
-               rings: beforeState.rings.slice(0),
-               windings: beforeState.windings.slice(0),
-               multiPolys: []
-             };
-             var ringsAfter = this._afterState.rings;
-             var windingsAfter = this._afterState.windings;
-             var mpsAfter = this._afterState.multiPolys; // calculate ringsAfter, windingsAfter

 
 

-             for (var i = 0, iMax = this.rings.length; i < iMax; i++) {
-               var ring = this.rings[i];
-               var winding = this.windings[i];
-               var index = ringsAfter.indexOf(ring);
+           function run() {
+             var params = timenonce(getAuth(o)),
+                 oauth_token_secret = token('oauth_token_secret'),
+                 url = options.prefix !== false ? o.url + options.path : options.path,
+                 url_parts = url.replace(/#.*$/, '').split('?', 2),
+                 base_url = url_parts[0],
+                 query = url_parts.length === 2 ? url_parts[1] : ''; // https://tools.ietf.org/html/rfc5849#section-3.4.1.3.1

 
 

-               if (index === -1) {
-                 ringsAfter.push(ring);
-                 windingsAfter.push(winding);
-               } else windingsAfter[index] += winding;
-             } // calcualte polysAfter
+             if ((!options.options || !options.options.header || options.options.header['Content-Type'] === 'application/x-www-form-urlencoded') && options.content) {
+               params = xtend(params, ohauth.stringQs(options.content));
+             }

 
 

+             params.oauth_token = token('oauth_token');
+             params.oauth_signature = ohauth.signature(o.oauth_secret, oauth_token_secret, ohauth.baseString(options.method, base_url, xtend(params, ohauth.stringQs(query))));
+             return ohauth.xhr(options.method, url, params, options.content, options.options, done);
+           }

 
 

-             var polysAfter = [];
-             var polysExclude = [];
+           function done(err, xhr) {
+             if (err) return callback(err);else if (xhr.responseXML) return callback(err, xhr.responseXML);else return callback(err, xhr.response);
+           }
+         }; // pre-authorize this object, if we can just get a token and token_secret
+         // from the start

 
 

-             for (var _i = 0, _iMax = ringsAfter.length; _i < _iMax; _i++) {
-               if (windingsAfter[_i] === 0) continue; // non-zero rule

 
 

-               var _ring = ringsAfter[_i];
-               var poly = _ring.poly;
-               if (polysExclude.indexOf(poly) !== -1) continue;
-               if (_ring.isExterior) polysAfter.push(poly);else {
-                 if (polysExclude.indexOf(poly) === -1) polysExclude.push(poly);
+         oauth.preauth = function (c) {
+           if (!c) return;
+           if (c.oauth_token) token('oauth_token', c.oauth_token);
+           if (c.oauth_token_secret) token('oauth_token_secret', c.oauth_token_secret);
+           return oauth;
+         };

 
 

-                 var _index = polysAfter.indexOf(_ring.poly);
+         oauth.options = function (_) {
+           if (!arguments.length) return o;
+           o = _;
+           o.url = o.url || 'https://www.openstreetmap.org';
+           o.landing = o.landing || 'land.html';
+           o.singlepage = o.singlepage || false; // Optional loading and loading-done functions for nice UI feedback.
+           // by default, no-ops

 
 

-                 if (_index !== -1) polysAfter.splice(_index, 1);
-               }
-             } // calculate multiPolysAfter
+           o.loading = o.loading || function () {};

 
 

+           o.done = o.done || function () {};

 
 

-             for (var _i2 = 0, _iMax2 = polysAfter.length; _i2 < _iMax2; _i2++) {
-               var mp = polysAfter[_i2].multiPoly;
-               if (mpsAfter.indexOf(mp) === -1) mpsAfter.push(mp);
-             }
+           return oauth.preauth(o);
+         }; // 'stamp' an authentication object from `getAuth()`
+         // with a [nonce](http://en.wikipedia.org/wiki/Cryptographic_nonce)
+         // and timestamp

 
 

-             return this._afterState;
-           }
-           /* Is this segment part of the final result? */

 
 

-         }, {
-           key: "isInResult",
-           value: function isInResult() {
-             // if we've been consumed, we're not in the result
-             if (this.consumedBy) return false;
-             if (this._isInResult !== undefined) return this._isInResult;
-             var mpsBefore = this.beforeState().multiPolys;
-             var mpsAfter = this.afterState().multiPolys;
+         function timenonce(o) {
+           o.oauth_timestamp = ohauth.timestamp();
+           o.oauth_nonce = ohauth.nonce();
+           return o;
+         } // get/set tokens. These are prefixed with the base URL so that `osm-auth`
+         // can be used with multiple APIs and the keys in `localStorage`
+         // will not clash

 
 

-             switch (operation.type) {
-               case 'union':
-                 {
-                   // UNION - included iff:
-                   //  * On one side of us there is 0 poly interiors AND
-                   //  * On the other side there is 1 or more.
-                   var noBefores = mpsBefore.length === 0;
-                   var noAfters = mpsAfter.length === 0;
-                   this._isInResult = noBefores !== noAfters;
-                   break;
-                 }

 
 

-               case 'intersection':
-                 {
-                   // INTERSECTION - included iff:
-                   //  * on one side of us all multipolys are rep. with poly interiors AND
-                   //  * on the other side of us, not all multipolys are repsented
-                   //    with poly interiors
-                   var least;
-                   var most;
+         var token;

 
 

-                   if (mpsBefore.length < mpsAfter.length) {
-                     least = mpsBefore.length;
-                     most = mpsAfter.length;
-                   } else {
-                     least = mpsAfter.length;
-                     most = mpsBefore.length;
-                   }
+         if (store.enabled) {
+           token = function token(x, y) {
+             if (arguments.length === 1) return store.get(o.url + x);else if (arguments.length === 2) return store.set(o.url + x, y);
+           };
+         } else {
+           var storage = {};

 
 

-                   this._isInResult = most === operation.numMultiPolys && least < most;
-                   break;
-                 }
+           token = function token(x, y) {
+             if (arguments.length === 1) return storage[o.url + x];else if (arguments.length === 2) return storage[o.url + x] = y;
+           };
+         } // Get an authentication object. If you just add and remove properties
+         // from a single object, you'll need to use `delete` to make sure that
+         // it doesn't contain undesired properties for authentication

 
 

-               case 'xor':
-                 {
-                   // XOR - included iff:
-                   //  * the difference between the number of multipolys represented
-                   //    with poly interiors on our two sides is an odd number
-                   var diff = Math.abs(mpsBefore.length - mpsAfter.length);
-                   this._isInResult = diff % 2 === 1;
-                   break;
-                 }

 
 

-               case 'difference':
-                 {
-                   // DIFFERENCE included iff:
-                   //  * on exactly one side, we have just the subject
-                   var isJustSubject = function isJustSubject(mps) {
-                     return mps.length === 1 && mps[0].isSubject;
-                   };
+         function getAuth(o) {
+           return {
+             oauth_consumer_key: o.oauth_consumer_key,
+             oauth_signature_method: 'HMAC-SHA1'
+           };
+         } // potentially pre-authorize

 
 

-                   this._isInResult = isJustSubject(mpsBefore) !== isJustSubject(mpsAfter);
-                   break;
-                 }

 
 

-               default:
-                 throw new Error("Unrecognized operation type found ".concat(operation.type));
-             }
+         oauth.options(o);
+         return oauth;
+       };

 
 

-             return this._isInResult;
-           }
-         }], [{
-           key: "fromRing",
-           value: function fromRing(pt1, pt2, ring) {
-             var leftPt, rightPt, winding; // ordering the two points according to sweep line ordering
+       var tiler$2 = utilTiler();
+       var dispatch$2 = dispatch$8('apiStatusChange', 'authLoading', 'authDone', 'change', 'loading', 'loaded', 'loadedNotes');
+       var urlroot = 'https://www.openstreetmap.org';
+       var oauth = osmAuth({
+         url: urlroot,
+         oauth_consumer_key: '5A043yRSEugj4DJ5TljuapfnrflWDte8jTOcWLlT',
+         oauth_secret: 'aB3jKq1TRsCOUrfOIZ6oQMEDmv2ptV76PA54NGLL',
+         loading: authLoading,
+         done: authDone
+       }); // hardcode default block of Google Maps

 
 

-             var cmpPts = SweepEvent$1.comparePoints(pt1, pt2);
+       var _imageryBlocklists = [/.*\.google(apis)?\..*\/(vt|kh)[\?\/].*([xyz]=.*){3}.*/];
+       var _tileCache = {
+         toLoad: {},
+         loaded: {},
+         inflight: {},
+         seen: {},
+         rtree: new RBush()
+       };
+       var _noteCache = {
+         toLoad: {},
+         loaded: {},
+         inflight: {},
+         inflightPost: {},
+         note: {},
+         closed: {},
+         rtree: new RBush()
+       };
+       var _userCache = {
+         toLoad: {},
+         user: {}
+       };

 
 

-             if (cmpPts < 0) {
-               leftPt = pt1;
-               rightPt = pt2;
-               winding = 1;
-             } else if (cmpPts > 0) {
-               leftPt = pt2;
-               rightPt = pt1;
-               winding = -1;
-             } else throw new Error("Tried to create degenerate segment at [".concat(pt1.x, ", ").concat(pt1.y, "]"));
+       var _cachedApiStatus;

 
 

-             var leftSE = new SweepEvent$1(leftPt, true);
-             var rightSE = new SweepEvent$1(rightPt, false);
-             return new Segment(leftSE, rightSE, [ring], [winding]);
-           }
-         }]);
+       var _changeset = {};

 
 

-         return Segment;
-       }();
+       var _deferred = new Set();

 
 

-       var RingIn = /*#__PURE__*/function () {
-         function RingIn(geomRing, poly, isExterior) {
-           _classCallCheck$1(this, RingIn);
+       var _connectionID = 1;
+       var _tileZoom = 16;
+       var _noteZoom = 12;

 
 

-           if (!Array.isArray(geomRing) || geomRing.length === 0) {
-             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
-           }
+       var _rateLimitError;

 
 

-           this.poly = poly;
-           this.isExterior = isExterior;
-           this.segments = [];
+       var _userChangesets;

 
 

-           if (typeof geomRing[0][0] !== 'number' || typeof geomRing[0][1] !== 'number') {
-             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
-           }
+       var _userDetails;

 
 

-           var firstPoint = rounder.round(geomRing[0][0], geomRing[0][1]);
-           this.bbox = {
-             ll: {
-               x: firstPoint.x,
-               y: firstPoint.y
-             },
-             ur: {
-               x: firstPoint.x,
-               y: firstPoint.y
-             }
-           };
-           var prevPoint = firstPoint;
+       var _off; // set a default but also load this from the API status

 
 

-           for (var i = 1, iMax = geomRing.length; i < iMax; i++) {
-             if (typeof geomRing[i][0] !== 'number' || typeof geomRing[i][1] !== 'number') {
-               throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
-             }

 
 

-             var point = rounder.round(geomRing[i][0], geomRing[i][1]); // skip repeated points
+       var _maxWayNodes = 2000;

 
 

-             if (point.x === prevPoint.x && point.y === prevPoint.y) continue;
-             this.segments.push(Segment.fromRing(prevPoint, point, this));
-             if (point.x < this.bbox.ll.x) this.bbox.ll.x = point.x;
-             if (point.y < this.bbox.ll.y) this.bbox.ll.y = point.y;
-             if (point.x > this.bbox.ur.x) this.bbox.ur.x = point.x;
-             if (point.y > this.bbox.ur.y) this.bbox.ur.y = point.y;
-             prevPoint = point;
-           } // add segment from last to first if last is not the same as first
+       function authLoading() {
+         dispatch$2.call('authLoading');
+       }

 
 

+       function authDone() {
+         dispatch$2.call('authDone');
+       }

 
 

-           if (firstPoint.x !== prevPoint.x || firstPoint.y !== prevPoint.y) {
-             this.segments.push(Segment.fromRing(prevPoint, firstPoint, this));
-           }
+       function abortRequest$2(controllerOrXHR) {
+         if (controllerOrXHR) {
+           controllerOrXHR.abort();

          }
          }

+       }

 
 

-         _createClass$1(RingIn, [{
-           key: "getSweepEvents",
-           value: function getSweepEvents() {
-             var sweepEvents = [];
+       function hasInflightRequests(cache) {
+         return Object.keys(cache.inflight).length;
+       }

 
 

-             for (var i = 0, iMax = this.segments.length; i < iMax; i++) {
-               var segment = this.segments[i];
-               sweepEvents.push(segment.leftSE);
-               sweepEvents.push(segment.rightSE);
-             }
+       function abortUnwantedRequests(cache, visibleTiles) {
+         Object.keys(cache.inflight).forEach(function (k) {
+           if (cache.toLoad[k]) return;
+           if (visibleTiles.find(function (tile) {
+             return k === tile.id;
+           })) return;
+           abortRequest$2(cache.inflight[k]);
+           delete cache.inflight[k];
+         });
+       }

 
 

-             return sweepEvents;
-           }
-         }]);
+       function getLoc(attrs) {
+         var lon = attrs.lon && attrs.lon.value;
+         var lat = attrs.lat && attrs.lat.value;
+         return [parseFloat(lon), parseFloat(lat)];
+       }

 
 

-         return RingIn;
-       }();
+       function getNodes(obj) {
+         var elems = obj.getElementsByTagName('nd');
+         var nodes = new Array(elems.length);

 
 

-       var PolyIn = /*#__PURE__*/function () {
-         function PolyIn(geomPoly, multiPoly) {
-           _classCallCheck$1(this, PolyIn);
+         for (var i = 0, l = elems.length; i < l; i++) {
+           nodes[i] = 'n' + elems[i].attributes.ref.value;
+         }

 
 

-           if (!Array.isArray(geomPoly)) {
-             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
-           }
+         return nodes;
+       }

 
 

-           this.exteriorRing = new RingIn(geomPoly[0], this, true); // copy by value
+       function getNodesJSON(obj) {
+         var elems = obj.nodes;
+         var nodes = new Array(elems.length);

 
 

-           this.bbox = {
-             ll: {
-               x: this.exteriorRing.bbox.ll.x,
-               y: this.exteriorRing.bbox.ll.y
-             },
-             ur: {
-               x: this.exteriorRing.bbox.ur.x,
-               y: this.exteriorRing.bbox.ur.y
-             }
-           };
-           this.interiorRings = [];
+         for (var i = 0, l = elems.length; i < l; i++) {
+           nodes[i] = 'n' + elems[i];
+         }

 
 

-           for (var i = 1, iMax = geomPoly.length; i < iMax; i++) {
-             var ring = new RingIn(geomPoly[i], this, false);
-             if (ring.bbox.ll.x < this.bbox.ll.x) this.bbox.ll.x = ring.bbox.ll.x;
-             if (ring.bbox.ll.y < this.bbox.ll.y) this.bbox.ll.y = ring.bbox.ll.y;
-             if (ring.bbox.ur.x > this.bbox.ur.x) this.bbox.ur.x = ring.bbox.ur.x;
-             if (ring.bbox.ur.y > this.bbox.ur.y) this.bbox.ur.y = ring.bbox.ur.y;
-             this.interiorRings.push(ring);
-           }
+         return nodes;
+       }

 
 

-           this.multiPoly = multiPoly;
+       function getTags(obj) {
+         var elems = obj.getElementsByTagName('tag');
+         var tags = {};
+
+         for (var i = 0, l = elems.length; i < l; i++) {
+           var attrs = elems[i].attributes;
+           tags[attrs.k.value] = attrs.v.value;

          }
 
          }
 

-         _createClass$1(PolyIn, [{
-           key: "getSweepEvents",
-           value: function getSweepEvents() {
-             var sweepEvents = this.exteriorRing.getSweepEvents();
+         return tags;
+       }

 
 

-             for (var i = 0, iMax = this.interiorRings.length; i < iMax; i++) {
-               var ringSweepEvents = this.interiorRings[i].getSweepEvents();
+       function getMembers(obj) {
+         var elems = obj.getElementsByTagName('member');
+         var members = new Array(elems.length);

 
 

-               for (var j = 0, jMax = ringSweepEvents.length; j < jMax; j++) {
-                 sweepEvents.push(ringSweepEvents[j]);
-               }
-             }
+         for (var i = 0, l = elems.length; i < l; i++) {
+           var attrs = elems[i].attributes;
+           members[i] = {
+             id: attrs.type.value[0] + attrs.ref.value,
+             type: attrs.type.value,
+             role: attrs.role.value
+           };
+         }

 
 

-             return sweepEvents;
-           }
-         }]);
+         return members;
+       }

 
 

-         return PolyIn;
-       }();
+       function getMembersJSON(obj) {
+         var elems = obj.members;
+         var members = new Array(elems.length);

 
 

-       var MultiPolyIn = /*#__PURE__*/function () {
-         function MultiPolyIn(geom, isSubject) {
-           _classCallCheck$1(this, MultiPolyIn);
+         for (var i = 0, l = elems.length; i < l; i++) {
+           var attrs = elems[i];
+           members[i] = {
+             id: attrs.type[0] + attrs.ref,
+             type: attrs.type,
+             role: attrs.role
+           };
+         }

 
 

-           if (!Array.isArray(geom)) {
-             throw new Error('Input geometry is not a valid Polygon or MultiPolygon');
-           }
+         return members;
+       }

 
 

-           try {
-             // if the input looks like a polygon, convert it to a multipolygon
-             if (typeof geom[0][0][0] === 'number') geom = [geom];
-           } catch (ex) {// The input is either malformed or has empty arrays.
-             // In either case, it will be handled later on.
-           }
+       function getVisible(attrs) {
+         return !attrs.visible || attrs.visible.value !== 'false';
+       }

 
 

-           this.polys = [];
-           this.bbox = {
-             ll: {
-               x: Number.POSITIVE_INFINITY,
-               y: Number.POSITIVE_INFINITY
-             },
-             ur: {
-               x: Number.NEGATIVE_INFINITY,
-               y: Number.NEGATIVE_INFINITY
-             }
-           };
+       function parseComments(comments) {
+         var parsedComments = []; // for each comment

 
 

-           for (var i = 0, iMax = geom.length; i < iMax; i++) {
-             var poly = new PolyIn(geom[i], this);
-             if (poly.bbox.ll.x < this.bbox.ll.x) this.bbox.ll.x = poly.bbox.ll.x;
-             if (poly.bbox.ll.y < this.bbox.ll.y) this.bbox.ll.y = poly.bbox.ll.y;
-             if (poly.bbox.ur.x > this.bbox.ur.x) this.bbox.ur.x = poly.bbox.ur.x;
-             if (poly.bbox.ur.y > this.bbox.ur.y) this.bbox.ur.y = poly.bbox.ur.y;
-             this.polys.push(poly);
-           }
+         for (var i = 0; i < comments.length; i++) {
+           var comment = comments[i];

 
 

-           this.isSubject = isSubject;
-         }
+           if (comment.nodeName === 'comment') {
+             var childNodes = comment.childNodes;
+             var parsedComment = {};

 
 

-         _createClass$1(MultiPolyIn, [{
-           key: "getSweepEvents",
-           value: function getSweepEvents() {
-             var sweepEvents = [];
+             for (var j = 0; j < childNodes.length; j++) {
+               var node = childNodes[j];
+               var nodeName = node.nodeName;
+               if (nodeName === '#text') continue;
+               parsedComment[nodeName] = node.textContent;

 
 

-             for (var i = 0, iMax = this.polys.length; i < iMax; i++) {
-               var polySweepEvents = this.polys[i].getSweepEvents();
+               if (nodeName === 'uid') {
+                 var uid = node.textContent;

 
 

-               for (var j = 0, jMax = polySweepEvents.length; j < jMax; j++) {
-                 sweepEvents.push(polySweepEvents[j]);
+                 if (uid && !_userCache.user[uid]) {
+                   _userCache.toLoad[uid] = true;
+                 }

                }
              }
 
                }
              }
 

-             return sweepEvents;
+             if (parsedComment) {
+               parsedComments.push(parsedComment);
+             }

            }
            }

-         }]);
-
-         return MultiPolyIn;
-       }();
-
-       var RingOut = /*#__PURE__*/function () {
-         _createClass$1(RingOut, null, [{
-           key: "factory",
+         }

 
 

-           /* Given the segments from the sweep line pass, compute & return a series
-            * of closed rings from all the segments marked to be part of the result */
-           value: function factory(allSegments) {
-             var ringsOut = [];
+         return parsedComments;
+       }

 
 

-             for (var i = 0, iMax = allSegments.length; i < iMax; i++) {
-               var segment = allSegments[i];
-               if (!segment.isInResult() || segment.ringOut) continue;
-               var prevEvent = null;
-               var event = segment.leftSE;
-               var nextEvent = segment.rightSE;
-               var events = [event];
-               var startingPoint = event.point;
-               var intersectionLEs = [];
-               /* Walk the chain of linked events to form a closed ring */
+       function encodeNoteRtree(note) {
+         return {
+           minX: note.loc[0],
+           minY: note.loc[1],
+           maxX: note.loc[0],
+           maxY: note.loc[1],
+           data: note
+         };
+       }

 
 

-               while (true) {
-                 prevEvent = event;
-                 event = nextEvent;
-                 events.push(event);
-                 /* Is the ring complete? */
+       var jsonparsers = {
+         node: function nodeData(obj, uid) {
+           return new osmNode({
+             id: uid,
+             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
+             version: obj.version && obj.version.toString(),
+             changeset: obj.changeset && obj.changeset.toString(),
+             timestamp: obj.timestamp,
+             user: obj.user,
+             uid: obj.uid && obj.uid.toString(),
+             loc: [parseFloat(obj.lon), parseFloat(obj.lat)],
+             tags: obj.tags
+           });
+         },
+         way: function wayData(obj, uid) {
+           return new osmWay({
+             id: uid,
+             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
+             version: obj.version && obj.version.toString(),
+             changeset: obj.changeset && obj.changeset.toString(),
+             timestamp: obj.timestamp,
+             user: obj.user,
+             uid: obj.uid && obj.uid.toString(),
+             tags: obj.tags,
+             nodes: getNodesJSON(obj)
+           });
+         },
+         relation: function relationData(obj, uid) {
+           return new osmRelation({
+             id: uid,
+             visible: typeof obj.visible === 'boolean' ? obj.visible : true,
+             version: obj.version && obj.version.toString(),
+             changeset: obj.changeset && obj.changeset.toString(),
+             timestamp: obj.timestamp,
+             user: obj.user,
+             uid: obj.uid && obj.uid.toString(),
+             tags: obj.tags,
+             members: getMembersJSON(obj)
+           });
+         },
+         user: function parseUser(obj, uid) {
+           return {
+             id: uid,
+             display_name: obj.display_name,
+             account_created: obj.account_created,
+             image_url: obj.img && obj.img.href,
+             changesets_count: obj.changesets && obj.changesets.count && obj.changesets.count.toString() || '0',
+             active_blocks: obj.blocks && obj.blocks.received && obj.blocks.received.active && obj.blocks.received.active.toString() || '0'
+           };
+         }
+       };

 
 

-                 if (event.point === startingPoint) break;
+       function parseJSON(payload, callback, options) {
+         options = Object.assign({
+           skipSeen: true
+         }, options);

 
 

-                 while (true) {
-                   var availableLEs = event.getAvailableLinkedEvents();
-                   /* Did we hit a dead end? This shouldn't happen. Indicates some earlier
-                    * part of the algorithm malfunctioned... please file a bug report. */
+         if (!payload) {
+           return callback({
+             message: 'No JSON',
+             status: -1
+           });
+         }

 
 

-                   if (availableLEs.length === 0) {
-                     var firstPt = events[0].point;
-                     var lastPt = events[events.length - 1].point;
-                     throw new Error("Unable to complete output ring starting at [".concat(firstPt.x, ",") + " ".concat(firstPt.y, "]. Last matching segment found ends at") + " [".concat(lastPt.x, ", ").concat(lastPt.y, "]."));
-                   }
-                   /* Only one way to go, so cotinue on the path */
+         var json = payload;
+         if (_typeof(json) !== 'object') json = JSON.parse(payload);
+         if (!json.elements) return callback({
+           message: 'No JSON',
+           status: -1
+         });
+         var children = json.elements;
+         var handle = window.requestIdleCallback(function () {
+           _deferred["delete"](handle);

 
 

+           var results = [];
+           var result;

 
 

-                   if (availableLEs.length === 1) {
-                     nextEvent = availableLEs[0].otherSE;
-                     break;
-                   }
-                   /* We must have an intersection. Check for a completed loop */
+           for (var i = 0; i < children.length; i++) {
+             result = parseChild(children[i]);
+             if (result) results.push(result);
+           }

 
 

+           callback(null, results);
+         });

 
 

-                   var indexLE = null;
+         _deferred.add(handle);

 
 

-                   for (var j = 0, jMax = intersectionLEs.length; j < jMax; j++) {
-                     if (intersectionLEs[j].point === event.point) {
-                       indexLE = j;
-                       break;
-                     }
-                   }
-                   /* Found a completed loop. Cut that off and make a ring */
+         function parseChild(child) {
+           var parser = jsonparsers[child.type];
+           if (!parser) return null;
+           var uid;
+           uid = osmEntity.id.fromOSM(child.type, child.id);

 
 

+           if (options.skipSeen) {
+             if (_tileCache.seen[uid]) return null; // avoid reparsing a "seen" entity

 
 

-                   if (indexLE !== null) {
-                     var intersectionLE = intersectionLEs.splice(indexLE)[0];
-                     var ringEvents = events.splice(intersectionLE.index);
-                     ringEvents.unshift(ringEvents[0].otherSE);
-                     ringsOut.push(new RingOut(ringEvents.reverse()));
-                     continue;
-                   }
-                   /* register the intersection */
+             _tileCache.seen[uid] = true;
+           }

 
 

+           return parser(child, uid);
+         }
+       }

 
 

-                   intersectionLEs.push({
-                     index: events.length,
-                     point: event.point
-                   });
-                   /* Choose the left-most option to continue the walk */
+       function parseUserJSON(payload, callback, options) {
+         options = Object.assign({
+           skipSeen: true
+         }, options);

 
 

-                   var comparator = event.getLeftmostComparator(prevEvent);
-                   nextEvent = availableLEs.sort(comparator)[0].otherSE;
-                   break;
-                 }
-               }
+         if (!payload) {
+           return callback({
+             message: 'No JSON',
+             status: -1
+           });
+         }

 
 

-               ringsOut.push(new RingOut(events));
-             }
+         var json = payload;
+         if (_typeof(json) !== 'object') json = JSON.parse(payload);
+         if (!json.users && !json.user) return callback({
+           message: 'No JSON',
+           status: -1
+         });
+         var objs = json.users || [json];
+         var handle = window.requestIdleCallback(function () {
+           _deferred["delete"](handle);

 
 

-             return ringsOut;
+           var results = [];
+           var result;
+
+           for (var i = 0; i < objs.length; i++) {
+             result = parseObj(objs[i]);
+             if (result) results.push(result);

            }
            }

-         }]);

 
 

-         function RingOut(events) {
-           _classCallCheck$1(this, RingOut);
+           callback(null, results);
+         });

 
 

-           this.events = events;
+         _deferred.add(handle);

 
 

-           for (var i = 0, iMax = events.length; i < iMax; i++) {
-             events[i].segment.ringOut = this;
+         function parseObj(obj) {
+           var uid = obj.user.id && obj.user.id.toString();
+
+           if (options.skipSeen && _userCache.user[uid]) {
+             delete _userCache.toLoad[uid];
+             return null;

            }
 
            }
 

-           this.poly = null;
+           var user = jsonparsers.user(obj.user, uid);
+           _userCache.user[uid] = user;
+           delete _userCache.toLoad[uid];
+           return user;

          }
          }

+       }

 
 

-         _createClass$1(RingOut, [{
-           key: "getGeom",
-           value: function getGeom() {
-             // Remove superfluous points (ie extra points along a straight line),
-             var prevPt = this.events[0].point;
-             var points = [prevPt];
+       var parsers = {
+         node: function nodeData(obj, uid) {
+           var attrs = obj.attributes;
+           return new osmNode({
+             id: uid,
+             visible: getVisible(attrs),
+             version: attrs.version.value,
+             changeset: attrs.changeset && attrs.changeset.value,
+             timestamp: attrs.timestamp && attrs.timestamp.value,
+             user: attrs.user && attrs.user.value,
+             uid: attrs.uid && attrs.uid.value,
+             loc: getLoc(attrs),
+             tags: getTags(obj)
+           });
+         },
+         way: function wayData(obj, uid) {
+           var attrs = obj.attributes;
+           return new osmWay({
+             id: uid,
+             visible: getVisible(attrs),
+             version: attrs.version.value,
+             changeset: attrs.changeset && attrs.changeset.value,
+             timestamp: attrs.timestamp && attrs.timestamp.value,
+             user: attrs.user && attrs.user.value,
+             uid: attrs.uid && attrs.uid.value,
+             tags: getTags(obj),
+             nodes: getNodes(obj)
+           });
+         },
+         relation: function relationData(obj, uid) {
+           var attrs = obj.attributes;
+           return new osmRelation({
+             id: uid,
+             visible: getVisible(attrs),
+             version: attrs.version.value,
+             changeset: attrs.changeset && attrs.changeset.value,
+             timestamp: attrs.timestamp && attrs.timestamp.value,
+             user: attrs.user && attrs.user.value,
+             uid: attrs.uid && attrs.uid.value,
+             tags: getTags(obj),
+             members: getMembers(obj)
+           });
+         },
+         note: function parseNote(obj, uid) {
+           var attrs = obj.attributes;
+           var childNodes = obj.childNodes;
+           var props = {};
+           props.id = uid;
+           props.loc = getLoc(attrs); // if notes are coincident, move them apart slightly

 
 

-             for (var i = 1, iMax = this.events.length - 1; i < iMax; i++) {
-               var _pt = this.events[i].point;
-               var _nextPt = this.events[i + 1].point;
-               if (compareVectorAngles(_pt, prevPt, _nextPt) === 0) continue;
-               points.push(_pt);
-               prevPt = _pt;
-             } // ring was all (within rounding error of angle calc) colinear points
+           var coincident = false;
+           var epsilon = 0.00001;

 
 

+           do {
+             if (coincident) {
+               props.loc = geoVecAdd(props.loc, [epsilon, epsilon]);
+             }

 
 

-             if (points.length === 1) return null; // check if the starting point is necessary
+             var bbox = geoExtent(props.loc).bbox();
+             coincident = _noteCache.rtree.search(bbox).length;
+           } while (coincident); // parse note contents

 
 

-             var pt = points[0];
-             var nextPt = points[1];
-             if (compareVectorAngles(pt, prevPt, nextPt) === 0) points.shift();
-             points.push(points[0]);
-             var step = this.isExteriorRing() ? 1 : -1;
-             var iStart = this.isExteriorRing() ? 0 : points.length - 1;
-             var iEnd = this.isExteriorRing() ? points.length : -1;
-             var orderedPoints = [];

 
 

-             for (var _i = iStart; _i != iEnd; _i += step) {
-               orderedPoints.push([points[_i].x, points[_i].y]);
-             }
+           for (var i = 0; i < childNodes.length; i++) {
+             var node = childNodes[i];
+             var nodeName = node.nodeName;
+             if (nodeName === '#text') continue; // if the element is comments, parse the comments

 
 

-             return orderedPoints;
-           }
-         }, {
-           key: "isExteriorRing",
-           value: function isExteriorRing() {
-             if (this._isExteriorRing === undefined) {
-               var enclosing = this.enclosingRing();
-               this._isExteriorRing = enclosing ? !enclosing.isExteriorRing() : true;
+             if (nodeName === 'comments') {
+               props[nodeName] = parseComments(node.childNodes);
+             } else {
+               props[nodeName] = node.textContent;

              }
              }

-
-             return this._isExteriorRing;

            }
            }

-         }, {
-           key: "enclosingRing",
-           value: function enclosingRing() {
-             if (this._enclosingRing === undefined) {
-               this._enclosingRing = this._calcEnclosingRing();
-             }

 
 

-             return this._enclosingRing;
-           }
-           /* Returns the ring that encloses this one, if any */
+           var note = new osmNote(props);
+           var item = encodeNoteRtree(note);
+           _noteCache.note[note.id] = note;

 
 

-         }, {
-           key: "_calcEnclosingRing",
-           value: function _calcEnclosingRing() {
-             // start with the ealier sweep line event so that the prevSeg
-             // chain doesn't lead us inside of a loop of ours
-             var leftMostEvt = this.events[0];
+           _noteCache.rtree.insert(item);

 
 

-             for (var i = 1, iMax = this.events.length; i < iMax; i++) {
-               var evt = this.events[i];
-               if (SweepEvent$1.compare(leftMostEvt, evt) > 0) leftMostEvt = evt;
-             }
+           return note;
+         },
+         user: function parseUser(obj, uid) {
+           var attrs = obj.attributes;
+           var user = {
+             id: uid,
+             display_name: attrs.display_name && attrs.display_name.value,
+             account_created: attrs.account_created && attrs.account_created.value,
+             changesets_count: '0',
+             active_blocks: '0'
+           };
+           var img = obj.getElementsByTagName('img');

 
 

-             var prevSeg = leftMostEvt.segment.prevInResult();
-             var prevPrevSeg = prevSeg ? prevSeg.prevInResult() : null;
+           if (img && img[0] && img[0].getAttribute('href')) {
+             user.image_url = img[0].getAttribute('href');
+           }

 
 

-             while (true) {
-               // no segment found, thus no ring can enclose us
-               if (!prevSeg) return null; // no segments below prev segment found, thus the ring of the prev
-               // segment must loop back around and enclose us
+           var changesets = obj.getElementsByTagName('changesets');

 
 

-               if (!prevPrevSeg) return prevSeg.ringOut; // if the two segments are of different rings, the ring of the prev
-               // segment must either loop around us or the ring of the prev prev
-               // seg, which would make us and the ring of the prev peers
+           if (changesets && changesets[0] && changesets[0].getAttribute('count')) {
+             user.changesets_count = changesets[0].getAttribute('count');
+           }

 
 

-               if (prevPrevSeg.ringOut !== prevSeg.ringOut) {
-                 if (prevPrevSeg.ringOut.enclosingRing() !== prevSeg.ringOut) {
-                   return prevSeg.ringOut;
-                 } else return prevSeg.ringOut.enclosingRing();
-               } // two segments are from the same ring, so this was a penisula
-               // of that ring. iterate downward, keep searching
+           var blocks = obj.getElementsByTagName('blocks');

 
 

+           if (blocks && blocks[0]) {
+             var received = blocks[0].getElementsByTagName('received');

 
 

-               prevSeg = prevPrevSeg.prevInResult();
-               prevPrevSeg = prevSeg ? prevSeg.prevInResult() : null;
+             if (received && received[0] && received[0].getAttribute('active')) {
+               user.active_blocks = received[0].getAttribute('active');

              }
            }
              }
            }

-         }]);
-
-         return RingOut;
-       }();

 
 

-       var PolyOut = /*#__PURE__*/function () {
-         function PolyOut(exteriorRing) {
-           _classCallCheck$1(this, PolyOut);
-
-           this.exteriorRing = exteriorRing;
-           exteriorRing.poly = this;
-           this.interiorRings = [];
+           _userCache.user[uid] = user;
+           delete _userCache.toLoad[uid];
+           return user;

          }
          }

+       };

 
 

-         _createClass$1(PolyOut, [{
-           key: "addInterior",
-           value: function addInterior(ring) {
-             this.interiorRings.push(ring);
-             ring.poly = this;
-           }
-         }, {
-           key: "getGeom",
-           value: function getGeom() {
-             var geom = [this.exteriorRing.getGeom()]; // exterior ring was all (within rounding error of angle calc) colinear points
+       function parseXML(xml, callback, options) {
+         options = Object.assign({
+           skipSeen: true
+         }, options);

 
 

-             if (geom[0] === null) return null;
+         if (!xml || !xml.childNodes) {
+           return callback({
+             message: 'No XML',
+             status: -1
+           });
+         }

 
 

-             for (var i = 0, iMax = this.interiorRings.length; i < iMax; i++) {
-               var ringGeom = this.interiorRings[i].getGeom(); // interior ring was all (within rounding error of angle calc) colinear points
+         var root = xml.childNodes[0];
+         var children = root.childNodes;
+         var handle = window.requestIdleCallback(function () {
+           _deferred["delete"](handle);

 
 

-               if (ringGeom === null) continue;
-               geom.push(ringGeom);
-             }
+           var results = [];
+           var result;

 
 

-             return geom;
+           for (var i = 0; i < children.length; i++) {
+             result = parseChild(children[i]);
+             if (result) results.push(result);

            }
            }

-         }]);
-
-         return PolyOut;
-       }();

 
 

-       var MultiPolyOut = /*#__PURE__*/function () {
-         function MultiPolyOut(rings) {
-           _classCallCheck$1(this, MultiPolyOut);
+           callback(null, results);
+         });

 
 

-           this.rings = rings;
-           this.polys = this._composePolys(rings);
-         }
+         _deferred.add(handle);

 
 

-         _createClass$1(MultiPolyOut, [{
-           key: "getGeom",
-           value: function getGeom() {
-             var geom = [];
+         function parseChild(child) {
+           var parser = parsers[child.nodeName];
+           if (!parser) return null;
+           var uid;

 
 

-             for (var i = 0, iMax = this.polys.length; i < iMax; i++) {
-               var polyGeom = this.polys[i].getGeom(); // exterior ring was all (within rounding error of angle calc) colinear points
+           if (child.nodeName === 'user') {
+             uid = child.attributes.id.value;

 
 

-               if (polyGeom === null) continue;
-               geom.push(polyGeom);
+             if (options.skipSeen && _userCache.user[uid]) {
+               delete _userCache.toLoad[uid];
+               return null;

              }
              }

+           } else if (child.nodeName === 'note') {
+             uid = child.getElementsByTagName('id')[0].textContent;
+           } else {
+             uid = osmEntity.id.fromOSM(child.nodeName, child.attributes.id.value);

 
 

-             return geom;
-           }
-         }, {
-           key: "_composePolys",
-           value: function _composePolys(rings) {
-             var polys = [];
+             if (options.skipSeen) {
+               if (_tileCache.seen[uid]) return null; // avoid reparsing a "seen" entity

 
 

-             for (var i = 0, iMax = rings.length; i < iMax; i++) {
-               var ring = rings[i];
-               if (ring.poly) continue;
-               if (ring.isExteriorRing()) polys.push(new PolyOut(ring));else {
-                 var enclosingRing = ring.enclosingRing();
-                 if (!enclosingRing.poly) polys.push(new PolyOut(enclosingRing));
-                 enclosingRing.poly.addInterior(ring);
-               }
+               _tileCache.seen[uid] = true;

              }
              }

-
-             return polys;

            }
            }

-         }]);
-
-         return MultiPolyOut;
-       }();
-       /**
-        * NOTE:  We must be careful not to change any segments while
-        *        they are in the SplayTree. AFAIK, there's no way to tell
-        *        the tree to rebalance itself - thus before splitting
-        *        a segment that's in the tree, we remove it from the tree,
-        *        do the split, then re-insert it. (Even though splitting a
-        *        segment *shouldn't* change its correct position in the
-        *        sweep line tree, the reality is because of rounding errors,
-        *        it sometimes does.)
-        */

 
 

+           return parser(child, uid);
+         }
+       } // replace or remove note from rtree

 
 

-       var SweepLine = /*#__PURE__*/function () {
-         function SweepLine(queue) {
-           var comparator = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Segment.compare;

 
 

-           _classCallCheck$1(this, SweepLine);
+       function updateRtree(item, replace) {
+         _noteCache.rtree.remove(item, function isEql(a, b) {
+           return a.data.id === b.data.id;
+         });

 
 

-           this.queue = queue;
-           this.tree = new Tree(comparator);
-           this.segments = [];
+         if (replace) {
+           _noteCache.rtree.insert(item);

          }
          }

+       }

 
 

-         _createClass$1(SweepLine, [{
-           key: "process",
-           value: function process(event) {
-             var segment = event.segment;
-             var newEvents = []; // if we've already been consumed by another segment,
-             // clean up our body parts and get out
+       function wrapcb(thisArg, callback, cid) {
+         return function (err, result) {
+           if (err) {
+             // 400 Bad Request, 401 Unauthorized, 403 Forbidden..
+             if (err.status === 400 || err.status === 401 || err.status === 403) {
+               thisArg.logout();
+             }

 
 

-             if (event.consumedBy) {
-               if (event.isLeft) this.queue.remove(event.otherSE);else this.tree.remove(segment);
-               return newEvents;
+             return callback.call(thisArg, err);
+           } else if (thisArg.getConnectionId() !== cid) {
+             return callback.call(thisArg, {
+               message: 'Connection Switched',
+               status: -1
+             });
+           } else {
+             return callback.call(thisArg, err, result);
+           }
+         };
+       }
+
+       var serviceOsm = {
+         init: function init() {
+           utilRebind(this, dispatch$2, 'on');
+         },
+         reset: function reset() {
+           Array.from(_deferred).forEach(function (handle) {
+             window.cancelIdleCallback(handle);
+
+             _deferred["delete"](handle);
+           });
+           _connectionID++;
+           _userChangesets = undefined;
+           _userDetails = undefined;
+           _rateLimitError = undefined;
+           Object.values(_tileCache.inflight).forEach(abortRequest$2);
+           Object.values(_noteCache.inflight).forEach(abortRequest$2);
+           Object.values(_noteCache.inflightPost).forEach(abortRequest$2);
+           if (_changeset.inflight) abortRequest$2(_changeset.inflight);
+           _tileCache = {
+             toLoad: {},
+             loaded: {},
+             inflight: {},
+             seen: {},
+             rtree: new RBush()
+           };
+           _noteCache = {
+             toLoad: {},
+             loaded: {},
+             inflight: {},
+             inflightPost: {},
+             note: {},
+             closed: {},
+             rtree: new RBush()
+           };
+           _userCache = {
+             toLoad: {},
+             user: {}
+           };
+           _cachedApiStatus = undefined;
+           _changeset = {};
+           return this;
+         },
+         getConnectionId: function getConnectionId() {
+           return _connectionID;
+         },
+         changesetURL: function changesetURL(changesetID) {
+           return urlroot + '/changeset/' + changesetID;
+         },
+         changesetsURL: function changesetsURL(center, zoom) {
+           var precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
+           return urlroot + '/history#map=' + Math.floor(zoom) + '/' + center[1].toFixed(precision) + '/' + center[0].toFixed(precision);
+         },
+         entityURL: function entityURL(entity) {
+           return urlroot + '/' + entity.type + '/' + entity.osmId();
+         },
+         historyURL: function historyURL(entity) {
+           return urlroot + '/' + entity.type + '/' + entity.osmId() + '/history';
+         },
+         userURL: function userURL(username) {
+           return urlroot + '/user/' + username;
+         },
+         noteURL: function noteURL(note) {
+           return urlroot + '/note/' + note.id;
+         },
+         noteReportURL: function noteReportURL(note) {
+           return urlroot + '/reports/new?reportable_type=Note&reportable_id=' + note.id;
+         },
+         // Generic method to load data from the OSM API
+         // Can handle either auth or unauth calls.
+         loadFromAPI: function loadFromAPI(path, callback, options) {
+           options = Object.assign({
+             skipSeen: true
+           }, options);
+           var that = this;
+           var cid = _connectionID;
+
+           function done(err, payload) {
+             if (that.getConnectionId() !== cid) {
+               if (callback) callback({
+                 message: 'Connection Switched',
+                 status: -1
+               });
+               return;

              }
 
              }
 

-             var node = event.isLeft ? this.tree.insert(segment) : this.tree.find(segment);
-             if (!node) throw new Error("Unable to find segment #".concat(segment.id, " ") + "[".concat(segment.leftSE.point.x, ", ").concat(segment.leftSE.point.y, "] -> ") + "[".concat(segment.rightSE.point.x, ", ").concat(segment.rightSE.point.y, "] ") + 'in SweepLine tree. Please submit a bug report.');
-             var prevNode = node;
-             var nextNode = node;
-             var prevSeg = undefined;
-             var nextSeg = undefined; // skip consumed segments still in tree
+             var isAuthenticated = that.authenticated(); // 400 Bad Request, 401 Unauthorized, 403 Forbidden
+             // Logout and retry the request..
+
+             if (isAuthenticated && err && err.status && (err.status === 400 || err.status === 401 || err.status === 403)) {
+               that.logout();
+               that.loadFromAPI(path, callback, options); // else, no retry..
+             } else {
+               // 509 Bandwidth Limit Exceeded, 429 Too Many Requests
+               // Set the rateLimitError flag and trigger a warning..
+               if (!isAuthenticated && !_rateLimitError && err && err.status && (err.status === 509 || err.status === 429)) {
+                 _rateLimitError = err;
+                 dispatch$2.call('change');
+                 that.reloadApiStatus();
+               } else if (err && _cachedApiStatus === 'online' || !err && _cachedApiStatus !== 'online') {
+                 // If the response's error state doesn't match the status,
+                 // it's likely we lost or gained the connection so reload the status
+                 that.reloadApiStatus();
+               }

 
 

-             while (prevSeg === undefined) {
-               prevNode = this.tree.prev(prevNode);
-               if (prevNode === null) prevSeg = null;else if (prevNode.key.consumedBy === undefined) prevSeg = prevNode.key;
-             } // skip consumed segments still in tree
+               if (callback) {
+                 if (err) {
+                   return callback(err);
+                 } else {
+                   if (path.indexOf('.json') !== -1) {
+                     return parseJSON(payload, callback, options);
+                   } else {
+                     return parseXML(payload, callback, options);
+                   }
+                 }
+               }
+             }
+           }

 
 

+           if (this.authenticated()) {
+             return oauth.xhr({
+               method: 'GET',
+               path: path
+             }, done);
+           } else {
+             var url = urlroot + path;
+             var controller = new AbortController();
+             var fn;

 
 

-             while (nextSeg === undefined) {
-               nextNode = this.tree.next(nextNode);
-               if (nextNode === null) nextSeg = null;else if (nextNode.key.consumedBy === undefined) nextSeg = nextNode.key;
+             if (path.indexOf('.json') !== -1) {
+               fn = d3_json;
+             } else {
+               fn = d3_xml;

              }
 
              }
 

-             if (event.isLeft) {
-               // Check for intersections against the previous segment in the sweep line
-               var prevMySplitter = null;
+             fn(url, {
+               signal: controller.signal
+             }).then(function (data) {
+               done(null, data);
+             })["catch"](function (err) {
+               if (err.name === 'AbortError') return; // d3-fetch includes status in the error message,
+               // but we can't access the response itself
+               // https://github.com/d3/d3-fetch/issues/27

 
 

-               if (prevSeg) {
-                 var prevInter = prevSeg.getIntersection(segment);
+               var match = err.message.match(/^\d{3}/);

 
 

-                 if (prevInter !== null) {
-                   if (!segment.isAnEndpoint(prevInter)) prevMySplitter = prevInter;
+               if (match) {
+                 done({
+                   status: +match[0],
+                   statusText: err.message
+                 });
+               } else {
+                 done(err.message);
+               }
+             });
+             return controller;
+           }
+         },
+         // Load a single entity by id (ways and relations use the `/full` call to include
+         // nodes and members). Parent relations are not included, see `loadEntityRelations`.
+         // GET /api/0.6/node/#id
+         // GET /api/0.6/[way|relation]/#id/full
+         loadEntity: function loadEntity(id, callback) {
+           var type = osmEntity.id.type(id);
+           var osmID = osmEntity.id.toOSM(id);
+           var options = {
+             skipSeen: false
+           };
+           this.loadFromAPI('/api/0.6/' + type + '/' + osmID + (type !== 'node' ? '/full' : '') + '.json', function (err, entities) {
+             if (callback) callback(err, {
+               data: entities
+             });
+           }, options);
+         },
+         // Load a single entity with a specific version
+         // GET /api/0.6/[node|way|relation]/#id/#version
+         loadEntityVersion: function loadEntityVersion(id, version, callback) {
+           var type = osmEntity.id.type(id);
+           var osmID = osmEntity.id.toOSM(id);
+           var options = {
+             skipSeen: false
+           };
+           this.loadFromAPI('/api/0.6/' + type + '/' + osmID + '/' + version + '.json', function (err, entities) {
+             if (callback) callback(err, {
+               data: entities
+             });
+           }, options);
+         },
+         // Load the relations of a single entity with the given.
+         // GET /api/0.6/[node|way|relation]/#id/relations
+         loadEntityRelations: function loadEntityRelations(id, callback) {
+           var type = osmEntity.id.type(id);
+           var osmID = osmEntity.id.toOSM(id);
+           var options = {
+             skipSeen: false
+           };
+           this.loadFromAPI('/api/0.6/' + type + '/' + osmID + '/relations.json', function (err, entities) {
+             if (callback) callback(err, {
+               data: entities
+             });
+           }, options);
+         },
+         // Load multiple entities in chunks
+         // (note: callback may be called multiple times)
+         // Unlike `loadEntity`, child nodes and members are not fetched
+         // GET /api/0.6/[nodes|ways|relations]?#parameters
+         loadMultiple: function loadMultiple(ids, callback) {
+           var that = this;
+           var groups = utilArrayGroupBy(utilArrayUniq(ids), osmEntity.id.type);
+           Object.keys(groups).forEach(function (k) {
+             var type = k + 's'; // nodes, ways, relations

 
 

-                   if (!prevSeg.isAnEndpoint(prevInter)) {
-                     var newEventsFromSplit = this._splitSafely(prevSeg, prevInter);
+             var osmIDs = groups[k].map(function (id) {
+               return osmEntity.id.toOSM(id);
+             });
+             var options = {
+               skipSeen: false
+             };
+             utilArrayChunk(osmIDs, 150).forEach(function (arr) {
+               that.loadFromAPI('/api/0.6/' + type + '.json?' + type + '=' + arr.join(), function (err, entities) {
+                 if (callback) callback(err, {
+                   data: entities
+                 });
+               }, options);
+             });
+           });
+         },
+         // Create, upload, and close a changeset
+         // PUT /api/0.6/changeset/create
+         // POST /api/0.6/changeset/#id/upload
+         // PUT /api/0.6/changeset/#id/close
+         putChangeset: function putChangeset(changeset, changes, callback) {
+           var cid = _connectionID;

 
 

-                     for (var i = 0, iMax = newEventsFromSplit.length; i < iMax; i++) {
-                       newEvents.push(newEventsFromSplit[i]);
-                     }
-                   }
+           if (_changeset.inflight) {
+             return callback({
+               message: 'Changeset already inflight',
+               status: -2
+             }, changeset);
+           } else if (_changeset.open) {
+             // reuse existing open changeset..
+             return createdChangeset.call(this, null, _changeset.open);
+           } else {
+             // Open a new changeset..
+             var options = {
+               method: 'PUT',
+               path: '/api/0.6/changeset/create',
+               options: {
+                 header: {
+                   'Content-Type': 'text/xml'

                  }
                  }

-               } // Check for intersections against the next segment in the sweep line
+               },
+               content: JXON.stringify(changeset.asJXON())
+             };
+             _changeset.inflight = oauth.xhr(options, wrapcb(this, createdChangeset, cid));
+           }

 
 

+           function createdChangeset(err, changesetID) {
+             _changeset.inflight = null;

 
 

-               var nextMySplitter = null;
+             if (err) {
+               return callback(err, changeset);
+             }

 
 

-               if (nextSeg) {
-                 var nextInter = nextSeg.getIntersection(segment);
+             _changeset.open = changesetID;
+             changeset = changeset.update({
+               id: changesetID
+             }); // Upload the changeset..

 
 

-                 if (nextInter !== null) {
-                   if (!segment.isAnEndpoint(nextInter)) nextMySplitter = nextInter;
+             var options = {
+               method: 'POST',
+               path: '/api/0.6/changeset/' + changesetID + '/upload',
+               options: {
+                 header: {
+                   'Content-Type': 'text/xml'
+                 }
+               },
+               content: JXON.stringify(changeset.osmChangeJXON(changes))
+             };
+             _changeset.inflight = oauth.xhr(options, wrapcb(this, uploadedChangeset, cid));
+           }

 
 

-                   if (!nextSeg.isAnEndpoint(nextInter)) {
-                     var _newEventsFromSplit = this._splitSafely(nextSeg, nextInter);
+           function uploadedChangeset(err) {
+             _changeset.inflight = null;
+             if (err) return callback(err, changeset); // Upload was successful, safe to call the callback.
+             // Add delay to allow for postgres replication #1646 #2678

 
 

-                     for (var _i = 0, _iMax = _newEventsFromSplit.length; _i < _iMax; _i++) {
-                       newEvents.push(_newEventsFromSplit[_i]);
-                     }
+             window.setTimeout(function () {
+               callback(null, changeset);
+             }, 2500);
+             _changeset.open = null; // At this point, we don't really care if the connection was switched..
+             // Only try to close the changeset if we're still talking to the same server.
+
+             if (this.getConnectionId() === cid) {
+               // Still attempt to close changeset, but ignore response because #2667
+               oauth.xhr({
+                 method: 'PUT',
+                 path: '/api/0.6/changeset/' + changeset.id + '/close',
+                 options: {
+                   header: {
+                     'Content-Type': 'text/xml'

                    }
                  }
                    }
                  }

-               } // For simplicity, even if we find more than one intersection we only
-               // spilt on the 'earliest' (sweep-line style) of the intersections.
-               // The other intersection will be handled in a future process().
-
-
-               if (prevMySplitter !== null || nextMySplitter !== null) {
-                 var mySplitter = null;
-                 if (prevMySplitter === null) mySplitter = nextMySplitter;else if (nextMySplitter === null) mySplitter = prevMySplitter;else {
-                   var cmpSplitters = SweepEvent$1.comparePoints(prevMySplitter, nextMySplitter);
-                   mySplitter = cmpSplitters <= 0 ? prevMySplitter : nextMySplitter;
-                 } // Rounding errors can cause changes in ordering,
-                 // so remove afected segments and right sweep events before splitting
+               }, function () {
+                 return true;
+               });
+             }
+           }
+         },
+         // Load multiple users in chunks
+         // (note: callback may be called multiple times)
+         // GET /api/0.6/users?users=#id1,#id2,...,#idn
+         loadUsers: function loadUsers(uids, callback) {
+           var toLoad = [];
+           var cached = [];
+           utilArrayUniq(uids).forEach(function (uid) {
+             if (_userCache.user[uid]) {
+               delete _userCache.toLoad[uid];
+               cached.push(_userCache.user[uid]);
+             } else {
+               toLoad.push(uid);
+             }
+           });

 
 

-                 this.queue.remove(segment.rightSE);
-                 newEvents.push(segment.rightSE);
+           if (cached.length || !this.authenticated()) {
+             callback(undefined, cached);
+             if (!this.authenticated()) return; // require auth
+           }

 
 

-                 var _newEventsFromSplit2 = segment.split(mySplitter);
+           utilArrayChunk(toLoad, 150).forEach(function (arr) {
+             oauth.xhr({
+               method: 'GET',
+               path: '/api/0.6/users.json?users=' + arr.join()
+             }, wrapcb(this, done, _connectionID));
+           }.bind(this));

 
 

-                 for (var _i2 = 0, _iMax2 = _newEventsFromSplit2.length; _i2 < _iMax2; _i2++) {
-                   newEvents.push(_newEventsFromSplit2[_i2]);
-                 }
-               }
+           function done(err, payload) {
+             if (err) return callback(err);
+             var options = {
+               skipSeen: true
+             };
+             return parseUserJSON(payload, function (err, results) {
+               if (err) return callback(err);
+               return callback(undefined, results);
+             }, options);
+           }
+         },
+         // Load a given user by id
+         // GET /api/0.6/user/#id
+         loadUser: function loadUser(uid, callback) {
+           if (_userCache.user[uid] || !this.authenticated()) {
+             // require auth
+             delete _userCache.toLoad[uid];
+             return callback(undefined, _userCache.user[uid]);
+           }

 
 

-               if (newEvents.length > 0) {
-                 // We found some intersections, so re-do the current event to
-                 // make sure sweep line ordering is totally consistent for later
-                 // use with the segment 'prev' pointers
-                 this.tree.remove(segment);
-                 newEvents.push(event);
-               } else {
-                 // done with left event
-                 this.segments.push(segment);
-                 segment.prev = prevSeg;
-               }
-             } else {
-               // event.isRight
-               // since we're about to be removed from the sweep line, check for
-               // intersections between our previous and next segments
-               if (prevSeg && nextSeg) {
-                 var inter = prevSeg.getIntersection(nextSeg);
+           oauth.xhr({
+             method: 'GET',
+             path: '/api/0.6/user/' + uid + '.json'
+           }, wrapcb(this, done, _connectionID));

 
 

-                 if (inter !== null) {
-                   if (!prevSeg.isAnEndpoint(inter)) {
-                     var _newEventsFromSplit3 = this._splitSafely(prevSeg, inter);
+           function done(err, payload) {
+             if (err) return callback(err);
+             var options = {
+               skipSeen: true
+             };
+             return parseUserJSON(payload, function (err, results) {
+               if (err) return callback(err);
+               return callback(undefined, results[0]);
+             }, options);
+           }
+         },
+         // Load the details of the logged-in user
+         // GET /api/0.6/user/details
+         userDetails: function userDetails(callback) {
+           if (_userDetails) {
+             // retrieve cached
+             return callback(undefined, _userDetails);
+           }

 
 

-                     for (var _i3 = 0, _iMax3 = _newEventsFromSplit3.length; _i3 < _iMax3; _i3++) {
-                       newEvents.push(_newEventsFromSplit3[_i3]);
-                     }
-                   }
+           oauth.xhr({
+             method: 'GET',
+             path: '/api/0.6/user/details.json'
+           }, wrapcb(this, done, _connectionID));

 
 

-                   if (!nextSeg.isAnEndpoint(inter)) {
-                     var _newEventsFromSplit4 = this._splitSafely(nextSeg, inter);
+           function done(err, payload) {
+             if (err) return callback(err);
+             var options = {
+               skipSeen: false
+             };
+             return parseUserJSON(payload, function (err, results) {
+               if (err) return callback(err);
+               _userDetails = results[0];
+               return callback(undefined, _userDetails);
+             }, options);
+           }
+         },
+         // Load previous changesets for the logged in user
+         // GET /api/0.6/changesets?user=#id
+         userChangesets: function userChangesets(callback) {
+           if (_userChangesets) {
+             // retrieve cached
+             return callback(undefined, _userChangesets);
+           }

 
 

-                     for (var _i4 = 0, _iMax4 = _newEventsFromSplit4.length; _i4 < _iMax4; _i4++) {
-                       newEvents.push(_newEventsFromSplit4[_i4]);
-                     }
-                   }
-                 }
-               }
+           this.userDetails(wrapcb(this, gotDetails, _connectionID));

 
 

-               this.tree.remove(segment);
+           function gotDetails(err, user) {
+             if (err) {
+               return callback(err);

              }
 
              }
 

-             return newEvents;
+             oauth.xhr({
+               method: 'GET',
+               path: '/api/0.6/changesets?user=' + user.id
+             }, wrapcb(this, done, _connectionID));

            }
            }

-           /* Safely split a segment that is currently in the datastructures
-            * IE - a segment other than the one that is currently being processed. */

 
 

-         }, {
-           key: "_splitSafely",
-           value: function _splitSafely(seg, pt) {
-             // Rounding errors can cause changes in ordering,
-             // so remove afected segments and right sweep events before splitting
-             // removeNode() doesn't work, so have re-find the seg
-             // https://github.com/w8r/splay-tree/pull/5
-             this.tree.remove(seg);
-             var rightSE = seg.rightSE;
-             this.queue.remove(rightSE);
-             var newEvents = seg.split(pt);
-             newEvents.push(rightSE); // splitting can trigger consumption
+           function done(err, xml) {
+             if (err) {
+               return callback(err);
+             }

 
 

-             if (seg.consumedBy === undefined) this.tree.insert(seg);
-             return newEvents;
+             _userChangesets = Array.prototype.map.call(xml.getElementsByTagName('changeset'), function (changeset) {
+               return {
+                 tags: getTags(changeset)
+               };
+             }).filter(function (changeset) {
+               var comment = changeset.tags.comment;
+               return comment && comment !== '';
+             });
+             return callback(undefined, _userChangesets);

            }
            }

-         }]);
+         },
+         // Fetch the status of the OSM API
+         // GET /api/capabilities
+         status: function status(callback) {
+           var url = urlroot + '/api/capabilities';
+           var errback = wrapcb(this, done, _connectionID);
+           d3_xml(url).then(function (data) {
+             errback(null, data);
+           })["catch"](function (err) {
+             errback(err.message);
+           });

 
 

-         return SweepLine;
-       }();
+           function done(err, xml) {
+             if (err) {
+               // the status is null if no response could be retrieved
+               return callback(err, null);
+             } // update blocklists

 
 

-       var POLYGON_CLIPPING_MAX_QUEUE_SIZE = typeof process !== 'undefined' && process.env.POLYGON_CLIPPING_MAX_QUEUE_SIZE || 1000000;
-       var POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS = typeof process !== 'undefined' && process.env.POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS || 1000000;

 
 

-       var Operation = /*#__PURE__*/function () {
-         function Operation() {
-           _classCallCheck$1(this, Operation);
-         }
+             var elements = xml.getElementsByTagName('blacklist');
+             var regexes = [];

 
 

-         _createClass$1(Operation, [{
-           key: "run",
-           value: function run(type, geom, moreGeoms) {
-             operation.type = type;
-             rounder.reset();
-             /* Convert inputs to MultiPoly objects */
+             for (var i = 0; i < elements.length; i++) {
+               var regexString = elements[i].getAttribute('regex'); // needs unencode?

 
 

-             var multipolys = [new MultiPolyIn(geom, true)];
+               if (regexString) {
+                 try {
+                   var regex = new RegExp(regexString);
+                   regexes.push(regex);
+                 } catch (e) {
+                   /* noop */
+                 }
+               }
+             }

 
 

-             for (var i = 0, iMax = moreGeoms.length; i < iMax; i++) {
-               multipolys.push(new MultiPolyIn(moreGeoms[i], false));
+             if (regexes.length) {
+               _imageryBlocklists = regexes;

              }
 
              }
 

-             operation.numMultiPolys = multipolys.length;
-             /* BBox optimization for difference operation
-              * If the bbox of a multipolygon that's part of the clipping doesn't
-              * intersect the bbox of the subject at all, we can just drop that
-              * multiploygon. */
+             if (_rateLimitError) {
+               return callback(_rateLimitError, 'rateLimited');
+             } else {
+               var waynodes = xml.getElementsByTagName('waynodes');
+               var maxWayNodes = waynodes.length && parseInt(waynodes[0].getAttribute('maximum'), 10);
+               if (maxWayNodes && isFinite(maxWayNodes)) _maxWayNodes = maxWayNodes;
+               var apiStatus = xml.getElementsByTagName('status');
+               var val = apiStatus[0].getAttribute('api');
+               return callback(undefined, val);
+             }
+           }
+         },
+         // Calls `status` and dispatches an `apiStatusChange` event if the returned
+         // status differs from the cached status.
+         reloadApiStatus: function reloadApiStatus() {
+           // throttle to avoid unnecessary API calls
+           if (!this.throttledReloadApiStatus) {
+             var that = this;
+             this.throttledReloadApiStatus = throttle(function () {
+               that.status(function (err, status) {
+                 if (status !== _cachedApiStatus) {
+                   _cachedApiStatus = status;
+                   dispatch$2.call('apiStatusChange', that, err, status);
+                 }
+               });
+             }, 500);
+           }

 
 

-             if (operation.type === 'difference') {
-               // in place removal
-               var subject = multipolys[0];
-               var _i = 1;
+           this.throttledReloadApiStatus();
+         },
+         // Returns the maximum number of nodes a single way can have
+         maxWayNodes: function maxWayNodes() {
+           return _maxWayNodes;
+         },
+         // Load data (entities) from the API in tiles
+         // GET /api/0.6/map?bbox=
+         loadTiles: function loadTiles(projection, callback) {
+           if (_off) return; // determine the needed tiles to cover the view

 
 

-               while (_i < multipolys.length) {
-                 if (getBboxOverlap(multipolys[_i].bbox, subject.bbox) !== null) _i++;else multipolys.splice(_i, 1);
-               }
-             }
-             /* BBox optimization for intersection operation
-              * If we can find any pair of multipolygons whose bbox does not overlap,
-              * then the result will be empty. */
+           var tiles = tiler$2.zoomExtent([_tileZoom, _tileZoom]).getTiles(projection); // abort inflight requests that are no longer needed

 
 

+           var hadRequests = hasInflightRequests(_tileCache);
+           abortUnwantedRequests(_tileCache, tiles);

 
 

-             if (operation.type === 'intersection') {
-               // TODO: this is O(n^2) in number of polygons. By sorting the bboxes,
-               //       it could be optimized to O(n * ln(n))
-               for (var _i2 = 0, _iMax = multipolys.length; _i2 < _iMax; _i2++) {
-                 var mpA = multipolys[_i2];
+           if (hadRequests && !hasInflightRequests(_tileCache)) {
+             dispatch$2.call('loaded'); // stop the spinner
+           } // issue new requests..

 
 

-                 for (var j = _i2 + 1, jMax = multipolys.length; j < jMax; j++) {
-                   if (getBboxOverlap(mpA.bbox, multipolys[j].bbox) === null) return [];
-                 }
-               }
-             }
-             /* Put segment endpoints in a priority queue */

 
 

+           tiles.forEach(function (tile) {
+             this.loadTile(tile, callback);
+           }, this);
+         },
+         // Load a single data tile
+         // GET /api/0.6/map?bbox=
+         loadTile: function loadTile(tile, callback) {
+           if (_off) return;
+           if (_tileCache.loaded[tile.id] || _tileCache.inflight[tile.id]) return;
+
+           if (!hasInflightRequests(_tileCache)) {
+             dispatch$2.call('loading'); // start the spinner
+           }

 
 

-             var queue = new Tree(SweepEvent$1.compare);
+           var path = '/api/0.6/map.json?bbox=';
+           var options = {
+             skipSeen: true
+           };
+           _tileCache.inflight[tile.id] = this.loadFromAPI(path + tile.extent.toParam(), tileCallback, options);

 
 

-             for (var _i3 = 0, _iMax2 = multipolys.length; _i3 < _iMax2; _i3++) {
-               var sweepEvents = multipolys[_i3].getSweepEvents();
+           function tileCallback(err, parsed) {
+             delete _tileCache.inflight[tile.id];

 
 

-               for (var _j = 0, _jMax = sweepEvents.length; _j < _jMax; _j++) {
-                 queue.insert(sweepEvents[_j]);
+             if (!err) {
+               delete _tileCache.toLoad[tile.id];
+               _tileCache.loaded[tile.id] = true;
+               var bbox = tile.extent.bbox();
+               bbox.id = tile.id;

 
 

-                 if (queue.size > POLYGON_CLIPPING_MAX_QUEUE_SIZE) {
-                   // prevents an infinite loop, an otherwise common manifestation of bugs
-                   throw new Error('Infinite loop when putting segment endpoints in a priority queue ' + '(queue size too big). Please file a bug report.');
-                 }
-               }
+               _tileCache.rtree.insert(bbox);

              }
              }

-             /* Pass the sweep line over those endpoints */

 
 

+             if (callback) {
+               callback(err, Object.assign({
+                 data: parsed
+               }, tile));
+             }

 
 

-             var sweepLine = new SweepLine(queue);
-             var prevQueueSize = queue.size;
-             var node = queue.pop();
+             if (!hasInflightRequests(_tileCache)) {
+               dispatch$2.call('loaded'); // stop the spinner
+             }
+           }
+         },
+         isDataLoaded: function isDataLoaded(loc) {
+           var bbox = {
+             minX: loc[0],
+             minY: loc[1],
+             maxX: loc[0],
+             maxY: loc[1]
+           };
+           return _tileCache.rtree.collides(bbox);
+         },
+         // load the tile that covers the given `loc`
+         loadTileAtLoc: function loadTileAtLoc(loc, callback) {
+           // Back off if the toLoad queue is filling up.. re #6417
+           // (Currently `loadTileAtLoc` requests are considered low priority - used by operations to
+           // let users safely edit geometries which extend to unloaded tiles.  We can drop some.)
+           if (Object.keys(_tileCache.toLoad).length > 50) return;
+           var k = geoZoomToScale(_tileZoom + 1);
+           var offset = geoRawMercator().scale(k)(loc);
+           var projection = geoRawMercator().transform({
+             k: k,
+             x: -offset[0],
+             y: -offset[1]
+           });
+           var tiles = tiler$2.zoomExtent([_tileZoom, _tileZoom]).getTiles(projection);
+           tiles.forEach(function (tile) {
+             if (_tileCache.toLoad[tile.id] || _tileCache.loaded[tile.id] || _tileCache.inflight[tile.id]) return;
+             _tileCache.toLoad[tile.id] = true;
+             this.loadTile(tile, callback);
+           }, this);
+         },
+         // Load notes from the API in tiles
+         // GET /api/0.6/notes?bbox=
+         loadNotes: function loadNotes(projection, noteOptions) {
+           noteOptions = Object.assign({
+             limit: 10000,
+             closed: 7
+           }, noteOptions);
+           if (_off) return;
+           var that = this;
+           var path = '/api/0.6/notes?limit=' + noteOptions.limit + '&closed=' + noteOptions.closed + '&bbox=';

 
 

-             while (node) {
-               var evt = node.key;
+           var throttleLoadUsers = throttle(function () {
+             var uids = Object.keys(_userCache.toLoad);
+             if (!uids.length) return;
+             that.loadUsers(uids, function () {}); // eagerly load user details
+           }, 750); // determine the needed tiles to cover the view

 
 

-               if (queue.size === prevQueueSize) {
-                 // prevents an infinite loop, an otherwise common manifestation of bugs
-                 var seg = evt.segment;
-                 throw new Error("Unable to pop() ".concat(evt.isLeft ? 'left' : 'right', " SweepEvent ") + "[".concat(evt.point.x, ", ").concat(evt.point.y, "] from segment #").concat(seg.id, " ") + "[".concat(seg.leftSE.point.x, ", ").concat(seg.leftSE.point.y, "] -> ") + "[".concat(seg.rightSE.point.x, ", ").concat(seg.rightSE.point.y, "] from queue. ") + 'Please file a bug report.');
-               }

 
 

-               if (queue.size > POLYGON_CLIPPING_MAX_QUEUE_SIZE) {
-                 // prevents an infinite loop, an otherwise common manifestation of bugs
-                 throw new Error('Infinite loop when passing sweep line over endpoints ' + '(queue size too big). Please file a bug report.');
-               }
+           var tiles = tiler$2.zoomExtent([_noteZoom, _noteZoom]).getTiles(projection); // abort inflight requests that are no longer needed

 
 

-               if (sweepLine.segments.length > POLYGON_CLIPPING_MAX_SWEEPLINE_SEGMENTS) {
-                 // prevents an infinite loop, an otherwise common manifestation of bugs
-                 throw new Error('Infinite loop when passing sweep line over endpoints ' + '(too many sweep line segments). Please file a bug report.');
-               }
+           abortUnwantedRequests(_noteCache, tiles); // issue new requests..

 
 

-               var newEvents = sweepLine.process(evt);
+           tiles.forEach(function (tile) {
+             if (_noteCache.loaded[tile.id] || _noteCache.inflight[tile.id]) return;
+             var options = {
+               skipSeen: false
+             };
+             _noteCache.inflight[tile.id] = that.loadFromAPI(path + tile.extent.toParam(), function (err) {
+               delete _noteCache.inflight[tile.id];

 
 

-               for (var _i4 = 0, _iMax3 = newEvents.length; _i4 < _iMax3; _i4++) {
-                 var _evt = newEvents[_i4];
-                 if (_evt.consumedBy === undefined) queue.insert(_evt);
+               if (!err) {
+                 _noteCache.loaded[tile.id] = true;

                }
 
                }
 

-               prevQueueSize = queue.size;
-               node = queue.pop();
-             } // free some memory we don't need anymore
+               throttleLoadUsers();
+               dispatch$2.call('loadedNotes');
+             }, options);
+           });
+         },
+         // Create a note
+         // POST /api/0.6/notes?params
+         postNoteCreate: function postNoteCreate(note, callback) {
+           if (!this.authenticated()) {
+             return callback({
+               message: 'Not Authenticated',
+               status: -3
+             }, note);
+           }
+
+           if (_noteCache.inflightPost[note.id]) {
+             return callback({
+               message: 'Note update already inflight',
+               status: -2
+             }, note);
+           }

 
 

+           if (!note.loc[0] || !note.loc[1] || !note.newComment) return; // location & description required

 
 

-             rounder.reset();
-             /* Collect and compile segments we're keeping into a multipolygon */
+           var comment = note.newComment;

 
 

-             var ringsOut = RingOut.factory(sweepLine.segments);
-             var result = new MultiPolyOut(ringsOut);
-             return result.getGeom();
+           if (note.newCategory && note.newCategory !== 'None') {
+             comment += ' #' + note.newCategory;

            }
            }

-         }]);

 
 

-         return Operation;
-       }(); // singleton available by import
+           var path = '/api/0.6/notes?' + utilQsString({
+             lon: note.loc[0],
+             lat: note.loc[1],
+             text: comment
+           });
+           _noteCache.inflightPost[note.id] = oauth.xhr({
+             method: 'POST',
+             path: path
+           }, wrapcb(this, done, _connectionID));

 
 

+           function done(err, xml) {
+             delete _noteCache.inflightPost[note.id];

 
 

-       var operation = new Operation();
+             if (err) {
+               return callback(err);
+             } // we get the updated note back, remove from caches and reparse..

 
 

-       var union$1 = function union(geom) {
-         for (var _len = arguments.length, moreGeoms = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-           moreGeoms[_key - 1] = arguments[_key];
-         }

 
 

-         return operation.run('union', geom, moreGeoms);
-       };
+             this.removeNote(note);
+             var options = {
+               skipSeen: false
+             };
+             return parseXML(xml, function (err, results) {
+               if (err) {
+                 return callback(err);
+               } else {
+                 return callback(undefined, results[0]);
+               }
+             }, options);
+           }
+         },
+         // Update a note
+         // POST /api/0.6/notes/#id/comment?text=comment
+         // POST /api/0.6/notes/#id/close?text=comment
+         // POST /api/0.6/notes/#id/reopen?text=comment
+         postNoteUpdate: function postNoteUpdate(note, newStatus, callback) {
+           if (!this.authenticated()) {
+             return callback({
+               message: 'Not Authenticated',
+               status: -3
+             }, note);
+           }

 
 

-       var intersection$1$1 = function intersection(geom) {
-         for (var _len2 = arguments.length, moreGeoms = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
-           moreGeoms[_key2 - 1] = arguments[_key2];
-         }
+           if (_noteCache.inflightPost[note.id]) {
+             return callback({
+               message: 'Note update already inflight',
+               status: -2
+             }, note);
+           }

 
 

-         return operation.run('intersection', geom, moreGeoms);
-       };
+           var action;

 
 

-       var xor = function xor(geom) {
-         for (var _len3 = arguments.length, moreGeoms = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
-           moreGeoms[_key3 - 1] = arguments[_key3];
-         }
+           if (note.status !== 'closed' && newStatus === 'closed') {
+             action = 'close';
+           } else if (note.status !== 'open' && newStatus === 'open') {
+             action = 'reopen';
+           } else {
+             action = 'comment';
+             if (!note.newComment) return; // when commenting, comment required
+           }

 
 

-         return operation.run('xor', geom, moreGeoms);
-       };
+           var path = '/api/0.6/notes/' + note.id + '/' + action;

 
 

-       var difference = function difference(subjectGeom) {
-         for (var _len4 = arguments.length, clippingGeoms = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
-           clippingGeoms[_key4 - 1] = arguments[_key4];
-         }
+           if (note.newComment) {
+             path += '?' + utilQsString({
+               text: note.newComment
+             });
+           }

 
 

-         return operation.run('difference', subjectGeom, clippingGeoms);
-       };
+           _noteCache.inflightPost[note.id] = oauth.xhr({
+             method: 'POST',
+             path: path
+           }, wrapcb(this, done, _connectionID));

 
 

-       var index$1 = {
-         union: union$1,
-         intersection: intersection$1$1,
-         xor: xor,
-         difference: difference
-       };
+           function done(err, xml) {
+             delete _noteCache.inflightPost[note.id];

 
 

-       var geojsonPrecision = createCommonjsModule(function (module) {
-         (function () {
-           function parse(t, coordinatePrecision, extrasPrecision) {
-             function point(p) {
-               return p.map(function (e, index) {
-                 if (index < 2) {
-                   return 1 * e.toFixed(coordinatePrecision);
-                 } else {
-                   return 1 * e.toFixed(extrasPrecision);
-                 }
-               });
-             }
+             if (err) {
+               return callback(err);
+             } // we get the updated note back, remove from caches and reparse..

 
 

-             function multi(l) {
-               return l.map(point);
-             }

 
 

-             function poly(p) {
-               return p.map(multi);
-             }
+             this.removeNote(note); // update closed note cache - used to populate `closed:note` changeset tag

 
 

-             function multiPoly(m) {
-               return m.map(poly);
+             if (action === 'close') {
+               _noteCache.closed[note.id] = true;
+             } else if (action === 'reopen') {
+               delete _noteCache.closed[note.id];

              }
 
              }
 

-             function geometry(obj) {
-               if (!obj) {
-                 return {};
+             var options = {
+               skipSeen: false
+             };
+             return parseXML(xml, function (err, results) {
+               if (err) {
+                 return callback(err);
+               } else {
+                 return callback(undefined, results[0]);

                }
                }

+             }, options);
+           }
+         },
+         "switch": function _switch(options) {
+           urlroot = options.urlroot;
+           oauth.options(Object.assign({
+             url: urlroot,
+             loading: authLoading,
+             done: authDone
+           }, options));
+           this.reset();
+           this.userChangesets(function () {}); // eagerly load user details/changesets

 
 

-               switch (obj.type) {
-                 case "Point":
-                   obj.coordinates = point(obj.coordinates);
-                   return obj;
+           dispatch$2.call('change');
+           return this;
+         },
+         toggle: function toggle(val) {
+           _off = !val;
+           return this;
+         },
+         isChangesetInflight: function isChangesetInflight() {
+           return !!_changeset.inflight;
+         },
+         // get/set cached data
+         // This is used to save/restore the state when entering/exiting the walkthrough
+         // Also used for testing purposes.
+         caches: function caches(obj) {
+           function cloneCache(source) {
+             var target = {};
+             Object.keys(source).forEach(function (k) {
+               if (k === 'rtree') {
+                 target.rtree = new RBush().fromJSON(source.rtree.toJSON()); // clone rbush
+               } else if (k === 'note') {
+                 target.note = {};
+                 Object.keys(source.note).forEach(function (id) {
+                   target.note[id] = osmNote(source.note[id]); // copy notes
+                 });
+               } else {
+                 target[k] = JSON.parse(JSON.stringify(source[k])); // clone deep
+               }
+             });
+             return target;
+           }

 
 

-                 case "LineString":
-                 case "MultiPoint":
-                   obj.coordinates = multi(obj.coordinates);
-                   return obj;
+           if (!arguments.length) {
+             return {
+               tile: cloneCache(_tileCache),
+               note: cloneCache(_noteCache),
+               user: cloneCache(_userCache)
+             };
+           } // access caches directly for testing (e.g., loading notes rtree)

 
 

-                 case "Polygon":
-                 case "MultiLineString":
-                   obj.coordinates = poly(obj.coordinates);
-                   return obj;

 
 

-                 case "MultiPolygon":
-                   obj.coordinates = multiPoly(obj.coordinates);
-                   return obj;
+           if (obj === 'get') {
+             return {
+               tile: _tileCache,
+               note: _noteCache,
+               user: _userCache
+             };
+           }

 
 

-                 case "GeometryCollection":
-                   obj.geometries = obj.geometries.map(geometry);
-                   return obj;
+           if (obj.tile) {
+             _tileCache = obj.tile;
+             _tileCache.inflight = {};
+           }

 
 

-                 default:
-                   return {};
-               }
-             }
+           if (obj.note) {
+             _noteCache = obj.note;
+             _noteCache.inflight = {};
+             _noteCache.inflightPost = {};
+           }

 
 

-             function feature(obj) {
-               obj.geometry = geometry(obj.geometry);
-               return obj;
-             }
+           if (obj.user) {
+             _userCache = obj.user;
+           }

 
 

-             function featureCollection(f) {
-               f.features = f.features.map(feature);
-               return f;
-             }
+           return this;
+         },
+         logout: function logout() {
+           _userChangesets = undefined;
+           _userDetails = undefined;
+           oauth.logout();
+           dispatch$2.call('change');
+           return this;
+         },
+         authenticated: function authenticated() {
+           return oauth.authenticated();
+         },
+         authenticate: function authenticate(callback) {
+           var that = this;
+           var cid = _connectionID;
+           _userChangesets = undefined;
+           _userDetails = undefined;

 
 

-             function geometryCollection(g) {
-               g.geometries = g.geometries.map(geometry);
-               return g;
+           function done(err, res) {
+             if (err) {
+               if (callback) callback(err);
+               return;

              }
 
              }
 

-             if (!t) {
-               return t;
+             if (that.getConnectionId() !== cid) {
+               if (callback) callback({
+                 message: 'Connection Switched',
+                 status: -1
+               });
+               return;

              }
 
              }
 

-             switch (t.type) {
-               case "Feature":
-                 return feature(t);
-
-               case "GeometryCollection":
-                 return geometryCollection(t);
+             _rateLimitError = undefined;
+             dispatch$2.call('change');
+             if (callback) callback(err, res);
+             that.userChangesets(function () {}); // eagerly load user details/changesets
+           }

 
 

-               case "FeatureCollection":
-                 return featureCollection(t);
+           return oauth.authenticate(done);
+         },
+         imageryBlocklists: function imageryBlocklists() {
+           return _imageryBlocklists;
+         },
+         tileZoom: function tileZoom(val) {
+           if (!arguments.length) return _tileZoom;
+           _tileZoom = val;
+           return this;
+         },
+         // get all cached notes covering the viewport
+         notes: function notes(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           return _noteCache.rtree.search(bbox).map(function (d) {
+             return d.data;
+           });
+         },
+         // get a single note from the cache
+         getNote: function getNote(id) {
+           return _noteCache.note[id];
+         },
+         // remove a single note from the cache
+         removeNote: function removeNote(note) {
+           if (!(note instanceof osmNote) || !note.id) return;
+           delete _noteCache.note[note.id];
+           updateRtree(encodeNoteRtree(note), false); // false = remove
+         },
+         // replace a single note in the cache
+         replaceNote: function replaceNote(note) {
+           if (!(note instanceof osmNote) || !note.id) return;
+           _noteCache.note[note.id] = note;
+           updateRtree(encodeNoteRtree(note), true); // true = replace

 
 

-               case "Point":
-               case "LineString":
-               case "Polygon":
-               case "MultiPoint":
-               case "MultiPolygon":
-               case "MultiLineString":
-                 return geometry(t);
+           return note;
+         },
+         // Get an array of note IDs closed during this session.
+         // Used to populate `closed:note` changeset tag
+         getClosedIDs: function getClosedIDs() {
+           return Object.keys(_noteCache.closed).sort();
+         }
+       };

 
 

-               default:
-                 return t;
-             }
-           }
+       var _apibase$1 = 'https://wiki.openstreetmap.org/w/api.php';
+       var _inflight$1 = {};
+       var _wikibaseCache = {};
+       var _localeIDs = {
+         en: false
+       };

 
 

-           module.exports = parse;
-           module.exports.parse = parse;
-         })();
+       var debouncedRequest$1 = debounce(request$1, 500, {
+         leading: false

        });
 
        });
 

-       function isObject$4(obj) {
-         return _typeof(obj) === 'object' && obj !== null;
+       function request$1(url, callback) {
+         if (_inflight$1[url]) return;
+         var controller = new AbortController();
+         _inflight$1[url] = controller;
+         d3_json(url, {
+           signal: controller.signal
+         }).then(function (result) {
+           delete _inflight$1[url];
+           if (callback) callback(null, result);
+         })["catch"](function (err) {
+           delete _inflight$1[url];
+           if (err.name === 'AbortError') return;
+           if (callback) callback(err.message);
+         });

        }
 
        }
 

-       function forEach(obj, cb) {
-         if (Array.isArray(obj)) {
-           obj.forEach(cb);
-         } else if (isObject$4(obj)) {
-           Object.keys(obj).forEach(function (key) {
-             var val = obj[key];
-             cb(val, key);
+       var serviceOsmWikibase = {
+         init: function init() {
+           _inflight$1 = {};
+           _wikibaseCache = {};
+           _localeIDs = {};
+         },
+         reset: function reset() {
+           Object.values(_inflight$1).forEach(function (controller) {
+             controller.abort();

            });
            });

-         }
-       }
-
-       function getTreeDepth(obj) {
-         var depth = 0;
+           _inflight$1 = {};
+         },

 
 

-         if (Array.isArray(obj) || isObject$4(obj)) {
-           forEach(obj, function (val) {
-             if (Array.isArray(val) || isObject$4(val)) {
-               var tmpDepth = getTreeDepth(val);
+         /**
+          * Get the best value for the property, or undefined if not found
+          * @param entity object from wikibase
+          * @param property string e.g. 'P4' for image
+          * @param langCode string e.g. 'fr' for French
+          */
+         claimToValue: function claimToValue(entity, property, langCode) {
+           if (!entity.claims[property]) return undefined;
+           var locale = _localeIDs[langCode];
+           var preferredPick, localePick;
+           entity.claims[property].forEach(function (stmt) {
+             // If exists, use value limited to the needed language (has a qualifier P26 = locale)
+             // Or if not found, use the first value with the "preferred" rank
+             if (!preferredPick && stmt.rank === 'preferred') {
+               preferredPick = stmt;
+             }

 
 

-               if (tmpDepth > depth) {
-                 depth = tmpDepth;
-               }
+             if (locale && stmt.qualifiers && stmt.qualifiers.P26 && stmt.qualifiers.P26[0].datavalue.value.id === locale) {
+               localePick = stmt;

              }
            });
              }
            });

-           return depth + 1;
-         }
-
-         return depth;
-       }
+           var result = localePick || preferredPick;

 
 

-       function stringify(obj, options) {
-         options = options || {};
-         var indent = JSON.stringify([1], null, get$5(options, 'indent', 2)).slice(2, -3);
-         var addMargin = get$5(options, 'margins', false);
-         var addArrayMargin = get$5(options, 'arrayMargins', false);
-         var addObjectMargin = get$5(options, 'objectMargins', false);
-         var maxLength = indent === '' ? Infinity : get$5(options, 'maxLength', 80);
-         var maxNesting = get$5(options, 'maxNesting', Infinity);
-         return function _stringify(obj, currentIndent, reserved) {
-           if (obj && typeof obj.toJSON === 'function') {
-             obj = obj.toJSON();
+           if (result) {
+             var datavalue = result.mainsnak.datavalue;
+             return datavalue.type === 'wikibase-entityid' ? datavalue.value.id : datavalue.value;
+           } else {
+             return undefined;

            }
            }

+         },

 
 

-           var string = JSON.stringify(obj);
+         /**
+          * Convert monolingual property into a key-value object (language -> value)
+          * @param entity object from wikibase
+          * @param property string e.g. 'P31' for monolingual wiki page title
+          */
+         monolingualClaimToValueObj: function monolingualClaimToValueObj(entity, property) {
+           if (!entity || !entity.claims[property]) return undefined;
+           return entity.claims[property].reduce(function (acc, obj) {
+             var value = obj.mainsnak.datavalue.value;
+             acc[value.language] = value.text;
+             return acc;
+           }, {});
+         },
+         toSitelink: function toSitelink(key, value) {
+           var result = value ? 'Tag:' + key + '=' + value : 'Key:' + key;
+           return result.replace(/_/g, ' ').trim();
+         },
+         //
+         // Pass params object of the form:
+         // {
+         //   key: 'string',
+         //   value: 'string',
+         //   langCode: 'string'
+         // }
+         //
+         getEntity: function getEntity(params, callback) {
+           var doRequest = params.debounce ? debouncedRequest$1 : request$1;
+           var that = this;
+           var titles = [];
+           var result = {};
+           var rtypeSitelink = params.key === 'type' && params.value ? ('Relation:' + params.value).replace(/_/g, ' ').trim() : false;
+           var keySitelink = params.key ? this.toSitelink(params.key) : false;
+           var tagSitelink = params.key && params.value ? this.toSitelink(params.key, params.value) : false;
+           var localeSitelink;

 
 

-           if (string === undefined) {
-             return string;
+           if (params.langCodes) {
+             params.langCodes.forEach(function (langCode) {
+               if (_localeIDs[langCode] === undefined) {
+                 // If this is the first time we are asking about this locale,
+                 // fetch corresponding entity (if it exists), and cache it.
+                 // If there is no such entry, cache `false` value to avoid re-requesting it.
+                 localeSitelink = ('Locale:' + langCode).replace(/_/g, ' ').trim();
+                 titles.push(localeSitelink);
+               }
+             });

            }
 
            }
 

-           var length = maxLength - currentIndent.length - reserved;
-           var treeDepth = getTreeDepth(obj);
+           if (rtypeSitelink) {
+             if (_wikibaseCache[rtypeSitelink]) {
+               result.rtype = _wikibaseCache[rtypeSitelink];
+             } else {
+               titles.push(rtypeSitelink);
+             }
+           }

 
 

-           if (treeDepth <= maxNesting && string.length <= length) {
-             var prettified = prettify(string, {
-               addMargin: addMargin,
-               addArrayMargin: addArrayMargin,
-               addObjectMargin: addObjectMargin
-             });
+           if (keySitelink) {
+             if (_wikibaseCache[keySitelink]) {
+               result.key = _wikibaseCache[keySitelink];
+             } else {
+               titles.push(keySitelink);
+             }
+           }

 
 

-             if (prettified.length <= length) {
-               return prettified;
+           if (tagSitelink) {
+             if (_wikibaseCache[tagSitelink]) {
+               result.tag = _wikibaseCache[tagSitelink];
+             } else {
+               titles.push(tagSitelink);

              }
            }
 
              }
            }
 

-           if (isObject$4(obj)) {
-             var nextIndent = currentIndent + indent;
-             var items = [];
-             var delimiters;
+           if (!titles.length) {
+             // Nothing to do, we already had everything in the cache
+             return callback(null, result);
+           } // Requesting just the user language code
+           // If backend recognizes the code, it will perform proper fallbacks,
+           // and the result will contain the requested code. If not, all values are returned:
+           // {"zh-tw":{"value":"...","language":"zh-tw","source-language":"zh-hant"}
+           // {"pt-br":{"value":"...","language":"pt","for-language":"pt-br"}}

 
 

-             var comma = function comma(array, index) {
-               return index === array.length - 1 ? 0 : 1;
-             };

 
 

-             if (Array.isArray(obj)) {
-               for (var index = 0; index < obj.length; index++) {
-                 items.push(_stringify(obj[index], nextIndent, comma(obj, index)) || 'null');
-               }
+           var obj = {
+             action: 'wbgetentities',
+             sites: 'wiki',
+             titles: titles.join('|'),
+             languages: params.langCodes.join('|'),
+             languagefallback: 1,
+             origin: '*',
+             format: 'json' // There is an MW Wikibase API bug https://phabricator.wikimedia.org/T212069
+             // We shouldn't use v1 until it gets fixed, but should switch to it afterwards
+             // formatversion: 2,

 
 

-               delimiters = '[]';
+           };
+           var url = _apibase$1 + '?' + utilQsString(obj);
+           doRequest(url, function (err, d) {
+             if (err) {
+               callback(err);
+             } else if (!d.success || d.error) {
+               callback(d.error.messages.map(function (v) {
+                 return v.html['*'];
+               }).join('<br>'));

              } else {
              } else {

-               Object.keys(obj).forEach(function (key, index, array) {
-                 var keyPart = JSON.stringify(key) + ': ';
-
-                 var value = _stringify(obj[key], nextIndent, keyPart.length + comma(array, index));
+               var localeID = false;
+               Object.values(d.entities).forEach(function (res) {
+                 if (res.missing !== '') {
+                   var title = res.sitelinks.wiki.title;

 
 

-                 if (value !== undefined) {
-                   items.push(keyPart + value);
+                   if (title === rtypeSitelink) {
+                     _wikibaseCache[rtypeSitelink] = res;
+                     result.rtype = res;
+                   } else if (title === keySitelink) {
+                     _wikibaseCache[keySitelink] = res;
+                     result.key = res;
+                   } else if (title === tagSitelink) {
+                     _wikibaseCache[tagSitelink] = res;
+                     result.tag = res;
+                   } else if (title === localeSitelink) {
+                     localeID = res.id;
+                   } else {
+                     console.log('Unexpected title ' + title); // eslint-disable-line no-console
+                   }

                  }
                });
                  }
                });

-               delimiters = '{}';
-             }

 
 

-             if (items.length > 0) {
-               return [delimiters[0], indent + items.join(',\n' + nextIndent), delimiters[1]].join('\n' + currentIndent);
+               if (localeSitelink) {
+                 // If locale ID is not found, store false to prevent repeated queries
+                 that.addLocale(params.langCodes[0], localeID);
+               }
+
+               callback(null, result);
+             }
+           });
+         },
+         //
+         // Pass params object of the form:
+         // {
+         //   key: 'string',     // required
+         //   value: 'string'    // optional
+         // }
+         //
+         // Get an result object used to display tag documentation
+         // {
+         //   title:        'string',
+         //   description:  'string',
+         //   editURL:      'string',
+         //   imageURL:     'string',
+         //   wiki:         { title: 'string', text: 'string', url: 'string' }
+         // }
+         //
+         getDocs: function getDocs(params, callback) {
+           var that = this;
+           var langCodes = _mainLocalizer.localeCodes().map(function (code) {
+             return code.toLowerCase();
+           });
+           params.langCodes = langCodes;
+           this.getEntity(params, function (err, data) {
+             if (err) {
+               callback(err);
+               return;

              }
              }

-           }

 
 

-           return string;
-         }(obj, '', 0);
-       } // Note: This regex matches even invalid JSON strings, but since we’re
-       // working on the output of `JSON.stringify` we know that only valid strings
-       // are present (unless the user supplied a weird `options.indent` but in
-       // that case we don’t care since the output would be invalid anyway).
+             var entity = data.rtype || data.tag || data.key;

 
 

+             if (!entity) {
+               callback('No entity');
+               return;
+             }

 
 

-       var stringOrChar = /("(?:[^\\"]|\\.)*")|[:,\][}{]/g;
+             var i;
+             var description;

 
 

-       function prettify(string, options) {
-         options = options || {};
-         var tokens = {
-           '{': '{',
-           '}': '}',
-           '[': '[',
-           ']': ']',
-           ',': ', ',
-           ':': ': '
-         };
+             for (i in langCodes) {
+               var _code = langCodes[i];

 
 

-         if (options.addMargin || options.addObjectMargin) {
-           tokens['{'] = '{ ';
-           tokens['}'] = ' }';
-         }
+               if (entity.descriptions[_code] && entity.descriptions[_code].language === _code) {
+                 description = entity.descriptions[_code];
+                 break;
+               }
+             }

 
 

-         if (options.addMargin || options.addArrayMargin) {
-           tokens['['] = '[ ';
-           tokens[']'] = ' ]';
-         }
+             if (!description && Object.values(entity.descriptions).length) description = Object.values(entity.descriptions)[0]; // prepare result

 
 

-         return string.replace(stringOrChar, function (match, string) {
-           return string ? match : tokens[match];
-         });
-       }
+             var result = {
+               title: entity.title,
+               description: description ? description.value : '',
+               descriptionLocaleCode: description ? description.language : '',
+               editURL: 'https://wiki.openstreetmap.org/wiki/' + entity.title
+             }; // add image

 
 

-       function get$5(options, name, defaultValue) {
-         return name in options ? options[name] : defaultValue;
-       }
+             if (entity.claims) {
+               var imageroot;
+               var image = that.claimToValue(entity, 'P4', langCodes[0]);

 
 

-       var jsonStringifyPrettyCompact = stringify;
+               if (image) {
+                 imageroot = 'https://commons.wikimedia.org/w/index.php';
+               } else {
+                 image = that.claimToValue(entity, 'P28', langCodes[0]);

 
 

-       var _default$3 = /*#__PURE__*/function () {
-         // constructor
-         //
-         // `fc`  Optional FeatureCollection of known features
-         //
-         // Optionally pass a GeoJSON FeatureCollection of known features which we can refer to later.
-         // Each feature must have a filename-like `id`, for example: `something.geojson`
-         //
-         // {
-         //   "type": "FeatureCollection"
-         //   "features": [
-         //     {
-         //       "type": "Feature",
-         //       "id": "philly_metro.geojson",
-         //       "properties": { … },
-         //       "geometry": { … }
-         //     }
-         //   ]
-         // }
-         function _default(fc) {
-           var _this = this;
+                 if (image) {
+                   imageroot = 'https://wiki.openstreetmap.org/w/index.php';
+                 }
+               }

 
 

-           _classCallCheck(this, _default);
+               if (imageroot && image) {
+                 result.imageURL = imageroot + '?' + utilQsString({
+                   title: 'Special:Redirect/file/' + image,
+                   width: 400
+                 });
+               }
+             } // Try to get a wiki page from tag data item first, followed by the corresponding key data item.
+             // If neither tag nor key data item contain a wiki page in the needed language nor English,
+             // get the first found wiki page from either the tag or the key item.

 
 

-           // The _cache retains resolved features, so if you ask for the same thing multiple times
-           // we don't repeat the expensive resolving/clipping operations.
-           //
-           // Each feature has a stable identifier that is used as the cache key.
-           // The identifiers look like:
-           // - for point locations, the stringified point:          e.g. '[8.67039,49.41882]'
-           // - for geojson locations, the geojson id:               e.g. 'de-hamburg.geojson'
-           // - for countrycoder locations, feature.id property:     e.g. 'Q2'  (countrycoder uses Wikidata identifiers)
-           // - for aggregated locationSets, +[include]-[exclude]:   e.g '+[Q2]-[Q18,Q27611]'
-           this._cache = {}; // When strict mode = true, throw on invalid locations or locationSets.
-           // When strict mode = false, return `null` for invalid locations or locationSets.

 
 

-           this._strict = true; // process input FeatureCollection
+             var rtypeWiki = that.monolingualClaimToValueObj(data.rtype, 'P31');
+             var tagWiki = that.monolingualClaimToValueObj(data.tag, 'P31');
+             var keyWiki = that.monolingualClaimToValueObj(data.key, 'P31');
+             var wikis = [rtypeWiki, tagWiki, keyWiki];

 
 

-           if (fc && fc.type === 'FeatureCollection' && Array.isArray(fc.features)) {
-             fc.features.forEach(function (feature) {
-               feature.properties = feature.properties || {};
-               var props = feature.properties; // get `id` from either `id` or `properties`
+             for (i in wikis) {
+               var wiki = wikis[i];

 
 

-               var id = feature.id || props.id;
-               if (!id || !/^\S+\.geojson$/i.test(id)) return; // ensure `id` exists and is lowercase
+               for (var j in langCodes) {
+                 var code = langCodes[j];
+                 var referenceId = langCodes[0].split('-')[0] !== 'en' && code.split('-')[0] === 'en' ? 'inspector.wiki_en_reference' : 'inspector.wiki_reference';
+                 var info = getWikiInfo(wiki, code, referenceId);

 
 

-               id = id.toLowerCase();
-               feature.id = id;
-               props.id = id; // ensure `area` property exists
+                 if (info) {
+                   result.wiki = info;
+                   break;
+                 }
+               }

 
 

-               if (!props.area) {
-                 var area = geojsonArea.geometry(feature.geometry) / 1e6; // m² to km²
+               if (result.wiki) break;
+             }

 
 

-                 props.area = Number(area.toFixed(2));
+             callback(null, result); // Helper method to get wiki info if a given language exists
+
+             function getWikiInfo(wiki, langCode, tKey) {
+               if (wiki && wiki[langCode]) {
+                 return {
+                   title: wiki[langCode],
+                   text: tKey,
+                   url: 'https://wiki.openstreetmap.org/wiki/' + wiki[langCode]
+                 };

                }
                }

+             }
+           });
+         },
+         addLocale: function addLocale(langCode, qid) {
+           // Makes it easier to unit test
+           _localeIDs[langCode] = qid;
+         },
+         apibase: function apibase(val) {
+           if (!arguments.length) return _apibase$1;
+           _apibase$1 = val;
+           return this;
+         }
+       };

 
 

-               _this._cache[id] = feature;
-             });
-           } // Replace CountryCoder world geometry to be a polygon covering the world.
+       var jsonpCache = {};
+       window.jsonpCache = jsonpCache;
+       function jsonpRequest(url, callback) {
+         var request = {
+           abort: function abort() {}
+         };

 
 

+         if (window.JSONP_FIX) {
+           if (window.JSONP_DELAY === 0) {
+             callback(window.JSONP_FIX);
+           } else {
+             var t = window.setTimeout(function () {
+               callback(window.JSONP_FIX);
+             }, window.JSONP_DELAY || 0);

 
 

-           var world = _cloneDeep(feature('Q2'));
+             request.abort = function () {
+               window.clearTimeout(t);
+             };
+           }

 
 

-           world.geometry = {
-             type: 'Polygon',
-             coordinates: [[[-180, -90], [180, -90], [180, 90], [-180, 90], [-180, -90]]]
-           };
-           world.id = 'Q2';
-           world.properties.id = 'Q2';
-           world.properties.area = geojsonArea.geometry(world.geometry) / 1e6; // m² to km²
+           return request;
+         }

 
 

-           this._cache.Q2 = world;
-         } // validateLocation
-         // `location`  The location to validate
-         //
-         // Pass a `location` value to validate
-         //
-         // Returns a result like:
-         //   {
-         //     type:     'point', 'geojson', or 'countrycoder'
-         //     location:  the queried location
-         //     id:        the stable identifier for the feature
-         //   }
-         // or `null` if the location is invalid
-         //
+         function rand() {
+           var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+           var c = '';
+           var i = -1;

 
 

+           while (++i < 15) {
+             c += chars.charAt(Math.floor(Math.random() * 52));
+           }

 
 

-         _createClass(_default, [{
-           key: "validateLocation",
-           value: function validateLocation(location) {
-             if (Array.isArray(location)) {
-               // a [lon,lat] coordinate pair?
-               if (location.length === 2 && Number.isFinite(location[0]) && Number.isFinite(location[1]) && location[0] >= -180 && location[0] <= 180 && location[1] >= -90 && location[1] <= 90) {
-                 var id = '[' + location.toString() + ']';
-                 return {
-                   type: 'point',
-                   location: location,
-                   id: id
-                 };
-               }
-             } else if (typeof location === 'string' && /^\S+\.geojson$/i.test(location)) {
-               // a .geojson filename?
-               var _id = location.toLowerCase();
+           return c;
+         }

 
 

-               if (this._cache[_id]) {
-                 return {
-                   type: 'geojson',
-                   location: location,
-                   id: _id
-                 };
-               }
-             } else if (typeof location === 'string' || typeof location === 'number') {
-               // a country-coder value?
-               var feature$1 = feature(location);
+         function create(url) {
+           var e = url.match(/callback=(\w+)/);
+           var c = e ? e[1] : rand();

 
 

-               if (feature$1) {
-                 // Use wikidata QID as the identifier, since that seems to be the one
-                 // property that everything in CountryCoder is guaranteed to have.
-                 var _id2 = feature$1.properties.wikidata;
-                 return {
-                   type: 'countrycoder',
-                   location: location,
-                   id: _id2
-                 };
-               }
+           jsonpCache[c] = function (data) {
+             if (jsonpCache[c]) {
+               callback(data);

              }
 
              }
 

-             if (this._strict) {
-               throw new Error("validateLocation:  Invalid location: \"".concat(location, "\"."));
-             } else {
-               return null;
-             }
-           } // resolveLocation
-           // `location`  The location to resolve
-           //
-           // Pass a `location` value to resolve
-           //
-           // Returns a result like:
-           //   {
-           //     type:      'point', 'geojson', or 'countrycoder'
-           //     location:  the queried location
-           //     id:        a stable identifier for the feature
-           //     feature:   the resolved GeoJSON feature
-           //   }
-           //  or `null` if the location is invalid
-           //
+             finalize();
+           };

 
 

-         }, {
-           key: "resolveLocation",
-           value: function resolveLocation(location) {
-             var valid = this.validateLocation(location);
-             if (!valid) return null;
-             var id = valid.id; // return a result from cache if we can
+           function finalize() {
+             delete jsonpCache[c];
+             script.remove();
+           }

 
 

-             if (this._cache[id]) {
-               return Object.assign(valid, {
-                 feature: this._cache[id]
-               });
-             } // a [lon,lat] coordinate pair?
+           request.abort = finalize;
+           return 'jsonpCache.' + c;
+         }

 
 

+         var cb = create(url);
+         var script = select('head').append('script').attr('type', 'text/javascript').attr('src', url.replace(/(\{|%7B)callback(\}|%7D)/, cb));
+         return request;
+       }

 
 

-             if (valid.type === 'point') {
-               var RADIUS = 25000; // meters
+       var bubbleApi = 'https://dev.virtualearth.net/mapcontrol/HumanScaleServices/GetBubbles.ashx?';
+       var streetsideImagesApi = 'https://t.ssl.ak.tiles.virtualearth.net/tiles/';
+       var bubbleAppKey = 'AuftgJsO0Xs8Ts4M1xZUQJQXJNsvmh3IV8DkNieCiy3tCwCUMq76-WpkrBtNAuEm';
+       var pannellumViewerCSS = 'pannellum-streetside/pannellum.css';
+       var pannellumViewerJS = 'pannellum-streetside/pannellum.js';
+       var maxResults = 2000;
+       var tileZoom = 16.5;
+       var tiler$1 = utilTiler().zoomExtent([tileZoom, tileZoom]).skipNullIsland(true);
+       var dispatch$1 = dispatch$8('loadedImages', 'viewerChanged');
+       var minHfov = 10; // zoom in degrees:  20, 10, 5

 
 

-               var EDGES = 10;
-               var PRECISION = 3;
-               var area = Math.PI * RADIUS * RADIUS / 1e6; // m² to km²
+       var maxHfov = 90; // zoom out degrees

 
 

-               var feature$1 = this._cache[id] = geojsonPrecision({
-                 type: 'Feature',
-                 id: id,
-                 properties: {
-                   id: id,
-                   area: Number(area.toFixed(2))
-                 },
-                 geometry: circleToPolygon(location, RADIUS, EDGES)
-               }, PRECISION);
-               return Object.assign(valid, {
-                 feature: feature$1
-               }); // a .geojson filename?
-             } else if (valid.type === 'geojson') ; else if (valid.type === 'countrycoder') {
-               var _feature = _cloneDeep(feature(id));
+       var defaultHfov = 45;
+       var _hires = false;
+       var _resolution = 512; // higher numbers are slower - 512, 1024, 2048, 4096

 
 

-               var props = _feature.properties; // -> This block of code is weird and requires some explanation. <-
-               // CountryCoder includes higher level features which are made up of members.
-               // These features don't have their own geometry, but CountryCoder provides an
-               //   `aggregateFeature` method to combine these members into a MultiPolygon.
-               // BUT, when we try to actually work with these aggregated MultiPolygons,
-               //   Turf/JSTS gets crashy because of topography bugs.
-               // SO, we'll aggregate the features ourselves by unioning them together.
-               // This approach also has the benefit of removing all the internal boaders and
-               //   simplifying the regional polygons a lot.
+       var _currScene = 0;

 
 

-               if (Array.isArray(props.members)) {
-                 var seed = _feature.geometry ? _feature : null;
-                 var aggregate = props.members.reduce(_locationReducer.bind(this), seed);
-                 _feature.geometry = aggregate.geometry;
-               } // ensure `area` property exists
+       var _ssCache;

 
 

+       var _pannellumViewer;

 
 

-               if (!props.area) {
-                 var _area = geojsonArea.geometry(_feature.geometry) / 1e6; // m² to km²
+       var _sceneOptions = {
+         showFullscreenCtrl: false,
+         autoLoad: true,
+         compass: true,
+         yaw: 0,
+         minHfov: minHfov,
+         maxHfov: maxHfov,
+         hfov: defaultHfov,
+         type: 'cubemap',
+         cubeMap: []
+       };

 
 

+       var _loadViewerPromise;
+       /**
+        * abortRequest().
+        */

 
 

-                 props.area = Number(_area.toFixed(2));
-               } // ensure `id` property exists

 
 

+       function abortRequest$1(i) {
+         i.abort();
+       }
+       /**
+        * localeTimeStamp().
+        */

 
 

-               _feature.id = id;
-               props.id = id;
-               this._cache[id] = _feature;
-               return Object.assign(valid, {
-                 feature: _feature
-               });
-             }

 
 

-             if (this._strict) {
-               throw new Error("resolveLocation:  Couldn't resolve location \"".concat(location, "\"."));
-             } else {
-               return null;
-             }
-           } // validateLocationSet
-           // `locationSet`  the locationSet to validate
-           //
-           // Pass a locationSet Object to validate like:
-           //   {
-           //     include: [ Array of locations ],
-           //     exclude: [ Array of locations ]
-           //   }
-           //
-           // Returns a result like:
-           //   {
-           //     type:         'locationset'
-           //     locationSet:  the queried locationSet
-           //     id:           the stable identifier for the feature
-           //   }
-           // or `null` if the locationSet is invalid
-           //
+       function localeTimestamp(s) {
+         if (!s) return null;
+         var options = {
+           day: 'numeric',
+           month: 'short',
+           year: 'numeric'
+         };
+         var d = new Date(s);
+         if (isNaN(d.getTime())) return null;
+         return d.toLocaleString(_mainLocalizer.localeCode(), options);
+       }
+       /**
+        * loadTiles() wraps the process of generating tiles and then fetching image points for each tile.
+        */

 
 

-         }, {
-           key: "validateLocationSet",
-           value: function validateLocationSet(locationSet) {
-             locationSet = locationSet || {};
-             var validator = this.validateLocation.bind(this);
-             var include = (locationSet.include || []).map(validator).filter(Boolean);
-             var exclude = (locationSet.exclude || []).map(validator).filter(Boolean);

 
 

-             if (!include.length) {
-               if (this._strict) {
-                 throw new Error("validateLocationSet:  LocationSet includes nothing.");
-               } else {
-                 // non-strict mode, replace an empty locationSet with one that includes "the world"
-                 locationSet.include = ['Q2'];
-                 include = [{
-                   type: 'countrycoder',
-                   location: 'Q2',
-                   id: 'Q2'
-                 }];
-               }
-             } // generate stable identifier
+       function loadTiles(which, url, projection, margin) {
+         var tiles = tiler$1.margin(margin).getTiles(projection); // abort inflight requests that are no longer needed

 
 

+         var cache = _ssCache[which];
+         Object.keys(cache.inflight).forEach(function (k) {
+           var wanted = tiles.find(function (tile) {
+             return k.indexOf(tile.id + ',') === 0;
+           });

 
 

-             include.sort(_sortLocations);
-             var id = '+[' + include.map(function (d) {
-               return d.id;
-             }).join(',') + ']';
+           if (!wanted) {
+             abortRequest$1(cache.inflight[k]);
+             delete cache.inflight[k];
+           }
+         });
+         tiles.forEach(function (tile) {
+           return loadNextTilePage(which, url, tile);
+         });
+       }
+       /**
+        * loadNextTilePage() load data for the next tile page in line.
+        */

 
 

-             if (exclude.length) {
-               exclude.sort(_sortLocations);
-               id += '-[' + exclude.map(function (d) {
-                 return d.id;
-               }).join(',') + ']';
-             }

 
 

-             return {
-               type: 'locationset',
-               locationSet: locationSet,
-               id: id
-             };
-           } // resolveLocationSet
-           // `locationSet`  the locationSet to resolve
-           //
-           // Pass a locationSet Object to validate like:
-           //   {
-           //     include: [ Array of locations ],
-           //     exclude: [ Array of locations ]
-           //   }
-           //
-           // Returns a result like:
-           //   {
-           //     type:         'locationset'
-           //     locationSet:  the queried locationSet
-           //     id:           the stable identifier for the feature
-           //     feature:      the resolved GeoJSON feature
-           //   }
-           // or `null` if the locationSet is invalid
-           //
+       function loadNextTilePage(which, url, tile) {
+         var cache = _ssCache[which];
+         var nextPage = cache.nextPage[tile.id] || 0;
+         var id = tile.id + ',' + String(nextPage);
+         if (cache.loaded[id] || cache.inflight[id]) return;
+         cache.inflight[id] = getBubbles(url, tile, function (bubbles) {
+           cache.loaded[id] = true;
+           delete cache.inflight[id];
+           if (!bubbles) return; // [].shift() removes the first element, some statistics info, not a bubble point

 
 

-         }, {
-           key: "resolveLocationSet",
-           value: function resolveLocationSet(locationSet) {
-             locationSet = locationSet || {};
-             var valid = this.validateLocationSet(locationSet);
-             if (!valid) return null;
-             var id = valid.id; // return a result from cache if we can
+           bubbles.shift();
+           var features = bubbles.map(function (bubble) {
+             if (cache.points[bubble.id]) return null; // skip duplicates

 
 

-             if (this._cache[id]) {
-               return Object.assign(valid, {
-                 feature: this._cache[id]
-               });
+             var loc = [bubble.lo, bubble.la];
+             var d = {
+               loc: loc,
+               key: bubble.id,
+               ca: bubble.he,
+               captured_at: bubble.cd,
+               captured_by: 'microsoft',
+               // nbn: bubble.nbn,
+               // pbn: bubble.pbn,
+               // ad: bubble.ad,
+               // rn: bubble.rn,
+               pr: bubble.pr,
+               // previous
+               ne: bubble.ne,
+               // next
+               pano: true,
+               sequenceKey: null
+             };
+             cache.points[bubble.id] = d; // a sequence starts here
+
+             if (bubble.pr === undefined) {
+               cache.leaders.push(bubble.id);

              }
 
              }
 

-             var resolver = this.resolveLocation.bind(this);
-             var include = (locationSet.include || []).map(resolver).filter(Boolean);
-             var exclude = (locationSet.exclude || []).map(resolver).filter(Boolean); // return quickly if it's a single included location..
+             return {
+               minX: loc[0],
+               minY: loc[1],
+               maxX: loc[0],
+               maxY: loc[1],
+               data: d
+             };
+           }).filter(Boolean);
+           cache.rtree.load(features);
+           connectSequences();

 
 

-             if (include.length === 1 && exclude.length === 0) {
-               return Object.assign(valid, {
-                 feature: include[0].feature
-               });
-             } // calculate unions
+           if (which === 'bubbles') {
+             dispatch$1.call('loadedImages');
+           }
+         });
+       } // call this sometimes to connect the bubbles into sequences

 
 
 
 

-             var includeGeoJSON = include.map(function (d) {
-               return d.location;
-             }).reduce(_locationReducer.bind(this), null);
-             var excludeGeoJSON = exclude.map(function (d) {
-               return d.location;
-             }).reduce(_locationReducer.bind(this), null); // calculate difference, update `area` and return result
+       function connectSequences() {
+         var cache = _ssCache.bubbles;
+         var keepLeaders = [];

 
 

-             var resultGeoJSON = excludeGeoJSON ? _clip(includeGeoJSON, excludeGeoJSON, 'DIFFERENCE') : includeGeoJSON;
-             var area = geojsonArea.geometry(resultGeoJSON.geometry) / 1e6; // m² to km²
+         for (var i = 0; i < cache.leaders.length; i++) {
+           var bubble = cache.points[cache.leaders[i]];
+           var seen = {}; // try to make a sequence.. use the key of the leader bubble.

 
 

-             resultGeoJSON.id = id;
-             resultGeoJSON.properties = {
-               id: id,
-               area: Number(area.toFixed(2))
-             };
-             this._cache[id] = resultGeoJSON;
-             return Object.assign(valid, {
-               feature: resultGeoJSON
-             });
-           } // strict
-           //
+           var sequence = {
+             key: bubble.key,
+             bubbles: []
+           };
+           var complete = false;

 
 

-         }, {
-           key: "strict",
-           value: function strict(val) {
-             if (val === undefined) {
-               // get
-               return this._strict;
+           do {
+             sequence.bubbles.push(bubble);
+             seen[bubble.key] = true;
+
+             if (bubble.ne === undefined) {
+               complete = true;

              } else {
              } else {

-               // set
-               this._strict = val;
-               return this;
+               bubble = cache.points[bubble.ne]; // advance to next

              }
              }

-           } // cache
-           // convenience method to access the internal cache
+           } while (bubble && !seen[bubble.key] && !complete);

 
 

-         }, {
-           key: "cache",
-           value: function cache() {
-             return this._cache;
-           } // stringify
-           // convenience method to prettyStringify the given object
+           if (complete) {
+             _ssCache.sequences[sequence.key] = sequence; // assign bubbles to the sequence

 
 

-         }, {
-           key: "stringify",
-           value: function stringify(obj, options) {
-             return jsonStringifyPrettyCompact(obj, options);
-           }
-         }]);
+             for (var j = 0; j < sequence.bubbles.length; j++) {
+               sequence.bubbles[j].sequenceKey = sequence.key;
+             } // create a GeoJSON LineString

 
 

-         return _default;
-       }(); // Wrap the mfogel/polygon-clipping library and return a GeoJSON feature.

 
 

-       function _clip(a, b, which) {
-         var fn = {
-           UNION: index$1.union,
-           DIFFERENCE: index$1.difference
-         }[which];
-         var coords = fn(a.geometry.coordinates, b.geometry.coordinates);
-         return {
-           type: 'Feature',
-           properties: {},
-           geometry: {
-             type: whichType(coords),
-             coordinates: coords
+             sequence.geojson = {
+               type: 'LineString',
+               properties: {
+                 captured_at: sequence.bubbles[0] ? sequence.bubbles[0].captured_at : null,
+                 captured_by: sequence.bubbles[0] ? sequence.bubbles[0].captured_by : null,
+                 key: sequence.key
+               },
+               coordinates: sequence.bubbles.map(function (d) {
+                 return d.loc;
+               })
+             };
+           } else {
+             keepLeaders.push(cache.leaders[i]);

            }
            }

-         }; // is this a Polygon or a MultiPolygon?
-
-         function whichType(coords) {
-           var a = Array.isArray(coords);
-           var b = a && Array.isArray(coords[0]);
-           var c = b && Array.isArray(coords[0][0]);
-           var d = c && Array.isArray(coords[0][0][0]);
-           return d ? 'MultiPolygon' : 'Polygon';
-         }
-       } // Reduce an array of locations into a single GeoJSON feature
+         } // couldn't complete these, save for later

 
 
 
 

-       function _locationReducer(accumulator, location) {
-         /* eslint-disable no-console, no-invalid-this */
-         var result;
+         cache.leaders = keepLeaders;
+       }
+       /**
+        * getBubbles() handles the request to the server for a tile extent of 'bubbles' (streetside image locations).
+        */

 
 

-         try {
-           var resolved = this.resolveLocation(location);

 
 

-           if (!resolved || !resolved.feature) {
-             console.warn("Warning:  Couldn't resolve location \"".concat(location, "\""));
-             return accumulator;
+       function getBubbles(url, tile, callback) {
+         var rect = tile.extent.rectangle();
+         var urlForRequest = url + utilQsString({
+           n: rect[3],
+           s: rect[1],
+           e: rect[2],
+           w: rect[0],
+           c: maxResults,
+           appkey: bubbleAppKey,
+           jsCallback: '{callback}'
+         });
+         return jsonpRequest(urlForRequest, function (data) {
+           if (!data || data.error) {
+             callback(null);
+           } else {
+             callback(data);

            }
            }

+         });
+       } // partition viewport into higher zoom tiles

 
 

-           result = !accumulator ? resolved.feature : _clip(accumulator, resolved.feature, 'UNION');
-         } catch (e) {
-           console.warn("Warning:  Error resolving location \"".concat(location, "\""));
-           console.warn(e);
-           result = accumulator;
-         }

 
 

-         return result;
-         /* eslint-enable no-console, no-invalid-this */
-       }
+       function partitionViewport(projection) {
+         var z = geoScaleToZoom(projection.scale());
+         var z2 = Math.ceil(z * 2) / 2 + 2.5; // round to next 0.5 and add 2.5

 
 

-       function _cloneDeep(obj) {
-         return JSON.parse(JSON.stringify(obj));
-       } // Sorting the location lists is ok because they end up unioned together.
-       // This sorting makes it possible to generate a deterministic id.
+         var tiler = utilTiler().zoomExtent([z2, z2]);
+         return tiler.getTiles(projection).map(function (tile) {
+           return tile.extent;
+         });
+       } // no more than `limit` results per partition.

 
 
 
 

-       function _sortLocations(a, b) {
-         var rank = {
-           countrycoder: 1,
-           geojson: 2,
-           point: 3
-         };
-         var aRank = rank[a.type];
-         var bRank = rank[b.type];
-         return aRank > bRank ? 1 : aRank < bRank ? -1 : a.id.localeCompare(b.id);
+       function searchLimited(limit, projection, rtree) {
+         limit = limit || 5;
+         return partitionViewport(projection).reduce(function (result, extent) {
+           var found = rtree.search(extent.bbox()).slice(0, limit).map(function (d) {
+             return d.data;
+           });
+           return found.length ? result.concat(found) : result;
+         }, []);

        }
        }

+       /**
+        * loadImage()
+        */

 
 

-       var _oci = null;
-       function uiSuccess(context) {
-         var MAXEVENTS = 2;
-         var dispatch$1 = dispatch('cancel');

 
 

-         var _changeset;
+       function loadImage(imgInfo) {
+         return new Promise(function (resolve) {
+           var img = new Image();

 
 

-         var _location;
+           img.onload = function () {
+             var canvas = document.getElementById('ideditor-canvas' + imgInfo.face);
+             var ctx = canvas.getContext('2d');
+             ctx.drawImage(img, imgInfo.x, imgInfo.y);
+             resolve({
+               imgInfo: imgInfo,
+               status: 'ok'
+             });
+           };

 
 

-         ensureOSMCommunityIndex(); // start fetching the data
+           img.onerror = function () {
+             resolve({
+               data: imgInfo,
+               status: 'error'
+             });
+           };

 
 

-         function ensureOSMCommunityIndex() {
-           var data = _mainFileFetcher;
-           return Promise.all([data.get('oci_resources'), data.get('oci_features')]).then(function (vals) {
-             if (_oci) return _oci;
-             var ociResources = vals[0].resources;
-             var loco = new _default$3(vals[1]);
-             var ociFeatures = {};
-             Object.values(ociResources).forEach(function (resource) {
-               var feature = loco.resolveLocationSet(resource.locationSet).feature;
-               var ociFeature = ociFeatures[feature.id];
+           img.setAttribute('crossorigin', '');
+           img.src = imgInfo.url;
+         });
+       }
+       /**
+        * loadCanvas()
+        */

 
 

-               if (!ociFeature) {
-                 ociFeature = JSON.parse(JSON.stringify(feature)); // deep clone

 
 

-                 ociFeature.properties.resourceIDs = new Set();
-                 ociFeatures[feature.id] = ociFeature;
-               }
+       function loadCanvas(imageGroup) {
+         return Promise.all(imageGroup.map(loadImage)).then(function (data) {
+           var canvas = document.getElementById('ideditor-canvas' + data[0].imgInfo.face);
+           var which = {
+             '01': 0,
+             '02': 1,
+             '03': 2,
+             '10': 3,
+             '11': 4,
+             '12': 5
+           };
+           var face = data[0].imgInfo.face;
+           _sceneOptions.cubeMap[which[face]] = canvas.toDataURL('image/jpeg', 1.0);
+           return {
+             status: 'loadCanvas for face ' + data[0].imgInfo.face + 'ok'
+           };
+         });
+       }
+       /**
+        * loadFaces()
+        */

 
 

-               ociFeature.properties.resourceIDs.add(resource.id);
-             });
-             return _oci = {
-               features: ociFeatures,
-               resources: ociResources,
-               query: whichPolygon_1({
-                 type: 'FeatureCollection',
-                 features: Object.values(ociFeatures)
-               })
-             };
-           });
-         } // string-to-date parsing in JavaScript is weird

 
 

+       function loadFaces(faceGroup) {
+         return Promise.all(faceGroup.map(loadCanvas)).then(function () {
+           return {
+             status: 'loadFaces done'
+           };
+         });
+       }
+
+       function setupCanvas(selection, reset) {
+         if (reset) {
+           selection.selectAll('#ideditor-stitcher-canvases').remove();
+         } // Add the Streetside working canvases. These are used for 'stitching', or combining,
+         // multiple images for each of the six faces, before passing to the Pannellum control as DataUrls

 
 

-         function parseEventDate(when) {
-           if (!when) return;
-           var raw = when.trim();
-           if (!raw) return;

 
 

-           if (!/Z$/.test(raw)) {
-             // if no trailing 'Z', add one
-             raw += 'Z'; // this forces date to be parsed as a UTC date
-           }
+         selection.selectAll('#ideditor-stitcher-canvases').data([0]).enter().append('div').attr('id', 'ideditor-stitcher-canvases').attr('display', 'none').selectAll('canvas').data(['canvas01', 'canvas02', 'canvas03', 'canvas10', 'canvas11', 'canvas12']).enter().append('canvas').attr('id', function (d) {
+           return 'ideditor-' + d;
+         }).attr('width', _resolution).attr('height', _resolution);
+       }

 
 

-           var parsed = new Date(raw);
-           return new Date(parsed.toUTCString().substr(0, 25)); // convert to local timezone
+       function qkToXY(qk) {
+         var x = 0;
+         var y = 0;
+         var scale = 256;
+
+         for (var i = qk.length; i > 0; i--) {
+           var key = qk[i - 1];
+           x += +(key === '1' || key === '3') * scale;
+           y += +(key === '2' || key === '3') * scale;
+           scale *= 2;

          }
 
          }
 

-         function success(selection) {
-           var header = selection.append('div').attr('class', 'header fillL');
-           header.append('h3').html(_t.html('success.just_edited'));
-           header.append('button').attr('class', 'close').on('click', function () {
-             return dispatch$1.call('cancel');
-           }).call(svgIcon('#iD-icon-close'));
-           var body = selection.append('div').attr('class', 'body save-success fillL');
-           var summary = body.append('div').attr('class', 'save-summary');
-           summary.append('h3').html(_t.html('success.thank_you' + (_location ? '_location' : ''), {
-             where: _location
-           }));
-           summary.append('p').html(_t.html('success.help_html')).append('a').attr('class', 'link-out').attr('target', '_blank').attr('href', _t('success.help_link_url')).call(svgIcon('#iD-icon-out-link', 'inline')).append('span').html(_t.html('success.help_link_text'));
-           var osm = context.connection();
-           if (!osm) return;
-           var changesetURL = osm.changesetURL(_changeset.id);
-           var table = summary.append('table').attr('class', 'summary-table');
-           var row = table.append('tr').attr('class', 'summary-row');
-           row.append('td').attr('class', 'cell-icon summary-icon').append('a').attr('target', '_blank').attr('href', changesetURL).append('svg').attr('class', 'logo-small').append('use').attr('xlink:href', '#iD-logo-osm');
-           var summaryDetail = row.append('td').attr('class', 'cell-detail summary-detail');
-           summaryDetail.append('a').attr('class', 'cell-detail summary-view-on-osm').attr('target', '_blank').attr('href', changesetURL).html(_t.html('success.view_on_osm'));
-           summaryDetail.append('div').html(_t.html('success.changeset_id', {
-             changeset_id: "<a href=\"".concat(changesetURL, "\" target=\"_blank\">").concat(_changeset.id, "</a>")
-           })); // Get OSM community index features intersecting the map..
+         return [x, y];
+       }

 
 

-           ensureOSMCommunityIndex().then(function (oci) {
-             var communities = [];
-             var properties = oci.query(context.map().center(), true) || []; // Gather the communities from the result
-
-             properties.forEach(function (props) {
-               var resourceIDs = Array.from(props.resourceIDs);
-               resourceIDs.forEach(function (resourceID) {
-                 var resource = oci.resources[resourceID];
-                 communities.push({
-                   area: props.area || Infinity,
-                   order: resource.order || 0,
-                   resource: resource
-                 });
-               });
-             }); // sort communities by feature area ascending, community order descending
+       function getQuadKeys() {
+         var dim = _resolution / 256;
+         var quadKeys;

 
 

-             communities.sort(function (a, b) {
-               return a.area - b.area || b.order - a.order;
-             });
-             body.call(showCommunityLinks, communities.map(function (c) {
-               return c.resource;
-             }));
-           });
+         if (dim === 16) {
+           quadKeys = ['0000', '0001', '0010', '0011', '0100', '0101', '0110', '0111', '1000', '1001', '1010', '1011', '1100', '1101', '1110', '1111', '0002', '0003', '0012', '0013', '0102', '0103', '0112', '0113', '1002', '1003', '1012', '1013', '1102', '1103', '1112', '1113', '0020', '0021', '0030', '0031', '0120', '0121', '0130', '0131', '1020', '1021', '1030', '1031', '1120', '1121', '1130', '1131', '0022', '0023', '0032', '0033', '0122', '0123', '0132', '0133', '1022', '1023', '1032', '1033', '1122', '1123', '1132', '1133', '0200', '0201', '0210', '0211', '0300', '0301', '0310', '0311', '1200', '1201', '1210', '1211', '1300', '1301', '1310', '1311', '0202', '0203', '0212', '0213', '0302', '0303', '0312', '0313', '1202', '1203', '1212', '1213', '1302', '1303', '1312', '1313', '0220', '0221', '0230', '0231', '0320', '0321', '0330', '0331', '1220', '1221', '1230', '1231', '1320', '1321', '1330', '1331', '0222', '0223', '0232', '0233', '0322', '0323', '0332', '0333', '1222', '1223', '1232', '1233', '1322', '1323', '1332', '1333', '2000', '2001', '2010', '2011', '2100', '2101', '2110', '2111', '3000', '3001', '3010', '3011', '3100', '3101', '3110', '3111', '2002', '2003', '2012', '2013', '2102', '2103', '2112', '2113', '3002', '3003', '3012', '3013', '3102', '3103', '3112', '3113', '2020', '2021', '2030', '2031', '2120', '2121', '2130', '2131', '3020', '3021', '3030', '3031', '3120', '3121', '3130', '3131', '2022', '2023', '2032', '2033', '2122', '2123', '2132', '2133', '3022', '3023', '3032', '3033', '3122', '3123', '3132', '3133', '2200', '2201', '2210', '2211', '2300', '2301', '2310', '2311', '3200', '3201', '3210', '3211', '3300', '3301', '3310', '3311', '2202', '2203', '2212', '2213', '2302', '2303', '2312', '2313', '3202', '3203', '3212', '3213', '3302', '3303', '3312', '3313', '2220', '2221', '2230', '2231', '2320', '2321', '2330', '2331', '3220', '3221', '3230', '3231', '3320', '3321', '3330', '3331', '2222', '2223', '2232', '2233', '2322', '2323', '2332', '2333', '3222', '3223', '3232', '3233', '3322', '3323', '3332', '3333'];
+         } else if (dim === 8) {
+           quadKeys = ['000', '001', '010', '011', '100', '101', '110', '111', '002', '003', '012', '013', '102', '103', '112', '113', '020', '021', '030', '031', '120', '121', '130', '131', '022', '023', '032', '033', '122', '123', '132', '133', '200', '201', '210', '211', '300', '301', '310', '311', '202', '203', '212', '213', '302', '303', '312', '313', '220', '221', '230', '231', '320', '321', '330', '331', '222', '223', '232', '233', '322', '323', '332', '333'];
+         } else if (dim === 4) {
+           quadKeys = ['00', '01', '10', '11', '02', '03', '12', '13', '20', '21', '30', '31', '22', '23', '32', '33'];
+         } else {
+           // dim === 2
+           quadKeys = ['0', '1', '2', '3'];

          }
 
          }
 

-         function showCommunityLinks(selection, resources) {
-           var communityLinks = selection.append('div').attr('class', 'save-communityLinks');
-           communityLinks.append('h3').html(_t.html('success.like_osm'));
-           var table = communityLinks.append('table').attr('class', 'community-table');
-           var row = table.selectAll('.community-row').data(resources);
-           var rowEnter = row.enter().append('tr').attr('class', 'community-row');
-           rowEnter.append('td').attr('class', 'cell-icon community-icon').append('a').attr('target', '_blank').attr('href', function (d) {
-             return d.url;
-           }).append('svg').attr('class', 'logo-small').append('use').attr('xlink:href', function (d) {
-             return "#community-".concat(d.type);
-           });
-           var communityDetail = rowEnter.append('td').attr('class', 'cell-detail community-detail');
-           communityDetail.each(showCommunityDetails);
-           communityLinks.append('div').attr('class', 'community-missing').html(_t.html('success.missing')).append('a').attr('class', 'link-out').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/osmlab/osm-community-index/issues').append('span').html(_t.html('success.tell_us'));
-         }
+         return quadKeys;
+       }

 
 

-         function showCommunityDetails(d) {
-           var selection = select(this);
-           var communityID = d.id;
-           var replacements = {
-             url: linkify(d.url),
-             signupUrl: linkify(d.signupUrl || d.url)
-           };
-           selection.append('div').attr('class', 'community-name').append('a').attr('target', '_blank').attr('href', d.url).html(_t.html("community.".concat(d.id, ".name")));
-           var descriptionHTML = _t.html("community.".concat(d.id, ".description"), replacements);
+       var serviceStreetside = {
+         /**
+          * init() initialize streetside.
+          */
+         init: function init() {
+           if (!_ssCache) {
+             this.reset();
+           }

 
 

-           if (d.type === 'reddit') {
-             // linkify subreddits  #4997
-             descriptionHTML = descriptionHTML.replace(/(\/r\/\w*\/*)/i, function (match) {
-               return linkify(d.url, match);
-             });
+           this.event = utilRebind(this, dispatch$1, 'on');
+         },
+
+         /**
+          * reset() reset the cache.
+          */
+         reset: function reset() {
+           if (_ssCache) {
+             Object.values(_ssCache.bubbles.inflight).forEach(abortRequest$1);

            }
 
            }
 

-           selection.append('div').attr('class', 'community-description').html(descriptionHTML);
+           _ssCache = {
+             bubbles: {
+               inflight: {},
+               loaded: {},
+               nextPage: {},
+               rtree: new RBush(),
+               points: {},
+               leaders: []
+             },
+             sequences: {}
+           };
+         },
+
+         /**
+          * bubbles()
+          */
+         bubbles: function bubbles(projection) {
+           var limit = 5;
+           return searchLimited(limit, projection, _ssCache.bubbles.rtree);
+         },
+         cachedImage: function cachedImage(imageKey) {
+           return _ssCache.bubbles.points[imageKey];
+         },
+         sequences: function sequences(projection) {
+           var viewport = projection.clipExtent();
+           var min = [viewport[0][0], viewport[1][1]];
+           var max = [viewport[1][0], viewport[0][1]];
+           var bbox = geoExtent(projection.invert(min), projection.invert(max)).bbox();
+           var seen = {};
+           var results = []; // all sequences for bubbles in viewport
+
+           _ssCache.bubbles.rtree.search(bbox).forEach(function (d) {
+             var key = d.data.sequenceKey;
+
+             if (key && !seen[key]) {
+               seen[key] = true;
+               results.push(_ssCache.sequences[key].geojson);
+             }
+           });
+
+           return results;
+         },

 
 

-           if (d.extendedDescription || d.languageCodes && d.languageCodes.length) {
-             selection.append('div').call(uiDisclosure(context, "community-more-".concat(d.id), false).expanded(false).updatePreference(false).label(_t.html('success.more')).content(showMore));
-           }
+         /**
+          * loadBubbles()
+          */
+         loadBubbles: function loadBubbles(projection, margin) {
+           // by default: request 2 nearby tiles so we can connect sequences.
+           if (margin === undefined) margin = 2;
+           loadTiles('bubbles', bubbleApi, projection, margin);
+         },
+         viewer: function viewer() {
+           return _pannellumViewer;
+         },
+         initViewer: function initViewer() {
+           if (!window.pannellum) return;
+           if (_pannellumViewer) return;
+           _currScene += 1;

 
 

-           var nextEvents = (d.events || []).map(function (event) {
-             event.date = parseEventDate(event.when);
-             return event;
-           }).filter(function (event) {
-             // date is valid and future (or today)
-             var t = event.date.getTime();
-             var now = new Date().setHours(0, 0, 0, 0);
-             return !isNaN(t) && t >= now;
-           }).sort(function (a, b) {
-             // sort by date ascending
-             return a.date < b.date ? -1 : a.date > b.date ? 1 : 0;
-           }).slice(0, MAXEVENTS); // limit number of events shown
+           var sceneID = _currScene.toString();

 
 

-           if (nextEvents.length) {
-             selection.append('div').call(uiDisclosure(context, "community-events-".concat(d.id), false).expanded(false).updatePreference(false).label(_t.html('success.events')).content(showNextEvents)).select('.hide-toggle').append('span').attr('class', 'badge-text').html(nextEvents.length);
-           }
+           var options = {
+             'default': {
+               firstScene: sceneID
+             },
+             scenes: {}
+           };
+           options.scenes[sceneID] = _sceneOptions;
+           _pannellumViewer = window.pannellum.viewer('ideditor-viewer-streetside', options);
+         },
+         ensureViewerLoaded: function ensureViewerLoaded(context) {
+           if (_loadViewerPromise) return _loadViewerPromise; // create ms-wrapper, a photo wrapper class

 
 

-           function showMore(selection) {
-             var more = selection.selectAll('.community-more').data([0]);
-             var moreEnter = more.enter().append('div').attr('class', 'community-more');
+           var wrap = context.container().select('.photoviewer').selectAll('.ms-wrapper').data([0]); // inject ms-wrapper into the photoviewer div
+           // (used by all to house each custom photo viewer)

 
 

-             if (d.extendedDescription) {
-               moreEnter.append('div').attr('class', 'community-extended-description').html(_t.html("community.".concat(d.id, ".extendedDescription"), replacements));
-             }
+           var wrapEnter = wrap.enter().append('div').attr('class', 'photo-wrapper ms-wrapper').classed('hide', true);
+           var that = this;
+           var pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse'; // inject div to support streetside viewer (pannellum) and attribution line

 
 

-             if (d.languageCodes && d.languageCodes.length) {
-               var languageList = d.languageCodes.map(function (code) {
-                 return _mainLocalizer.languageName(code);
-               }).join(', ');
-               moreEnter.append('div').attr('class', 'community-languages').html(_t.html('success.languages', {
-                 languages: languageList
-               }));
-             }
-           }
+           wrapEnter.append('div').attr('id', 'ideditor-viewer-streetside').on(pointerPrefix + 'down.streetside', function () {
+             select(window).on(pointerPrefix + 'move.streetside', function () {
+               dispatch$1.call('viewerChanged');
+             }, true);
+           }).on(pointerPrefix + 'up.streetside pointercancel.streetside', function () {
+             select(window).on(pointerPrefix + 'move.streetside', null); // continue dispatching events for a few seconds, in case viewer has inertia.

 
 

-           function showNextEvents(selection) {
-             var events = selection.append('div').attr('class', 'community-events');
-             var item = events.selectAll('.community-event').data(nextEvents);
-             var itemEnter = item.enter().append('div').attr('class', 'community-event');
-             itemEnter.append('div').attr('class', 'community-event-name').append('a').attr('target', '_blank').attr('href', function (d) {
-               return d.url;
-             }).html(function (d) {
-               var name = d.name;
+             var t = timer(function (elapsed) {
+               dispatch$1.call('viewerChanged');

 
 

-               if (d.i18n && d.id) {
-                 name = _t("community.".concat(communityID, ".events.").concat(d.id, ".name"), {
-                   "default": name
-                 });
+               if (elapsed > 2000) {
+                 t.stop();

                }
                }

-
-               return name;

              });
              });

-             itemEnter.append('div').attr('class', 'community-event-when').html(function (d) {
-               var options = {
-                 weekday: 'short',
-                 day: 'numeric',
-                 month: 'short',
-                 year: 'numeric'
-               };
+           }).append('div').attr('class', 'photo-attribution fillD');
+           var controlsEnter = wrapEnter.append('div').attr('class', 'photo-controls-wrap').append('div').attr('class', 'photo-controls');
+           controlsEnter.append('button').on('click.back', step(-1)).html('◄');
+           controlsEnter.append('button').on('click.forward', step(1)).html('►'); // create working canvas for stitching together images

 
 

-               if (d.date.getHours() || d.date.getMinutes()) {
-                 // include time if it has one
-                 options.hour = 'numeric';
-                 options.minute = 'numeric';
-               }
+           wrap = wrap.merge(wrapEnter).call(setupCanvas, true); // Register viewer resize handler

 
 

-               return d.date.toLocaleString(_mainLocalizer.localeCode(), options);
-             });
-             itemEnter.append('div').attr('class', 'community-event-where').html(function (d) {
-               var where = d.where;
+           context.ui().photoviewer.on('resize.streetside', function () {
+             if (_pannellumViewer) {
+               _pannellumViewer.resize();
+             }
+           });
+           _loadViewerPromise = new Promise(function (resolve, reject) {
+             var loadedCount = 0;

 
 

-               if (d.i18n && d.id) {
-                 where = _t("community.".concat(communityID, ".events.").concat(d.id, ".where"), {
-                   "default": where
-                 });
-               }
+             function loaded() {
+               loadedCount += 1; // wait until both files are loaded

 
 

-               return where;
-             });
-             itemEnter.append('div').attr('class', 'community-event-description').html(function (d) {
-               var description = d.description;
+               if (loadedCount === 2) resolve();
+             }

 
 

-               if (d.i18n && d.id) {
-                 description = _t("community.".concat(communityID, ".events.").concat(d.id, ".description"), {
-                   "default": description
-                 });
-               }
+             var head = select('head'); // load streetside pannellum viewer css

 
 

-               return description;
+             head.selectAll('#ideditor-streetside-viewercss').data([0]).enter().append('link').attr('id', 'ideditor-streetside-viewercss').attr('rel', 'stylesheet').attr('crossorigin', 'anonymous').attr('href', context.asset(pannellumViewerCSS)).on('load.serviceStreetside', loaded).on('error.serviceStreetside', function () {
+               reject();
+             }); // load streetside pannellum viewer js
+
+             head.selectAll('#ideditor-streetside-viewerjs').data([0]).enter().append('script').attr('id', 'ideditor-streetside-viewerjs').attr('crossorigin', 'anonymous').attr('src', context.asset(pannellumViewerJS)).on('load.serviceStreetside', loaded).on('error.serviceStreetside', function () {
+               reject();

              });
              });

-           }
+           })["catch"](function () {
+             _loadViewerPromise = null;
+           });
+           return _loadViewerPromise;

 
 

-           function linkify(url, text) {
-             text = text || url;
-             return "<a target=\"_blank\" href=\"".concat(url, "\">").concat(text, "</a>");
-           }
-         }
+           function step(stepBy) {
+             return function () {
+               var viewer = context.container().select('.photoviewer');
+               var selected = viewer.empty() ? undefined : viewer.datum();
+               if (!selected) return;
+               var nextID = stepBy === 1 ? selected.ne : selected.pr;

 
 

-         success.changeset = function (val) {
-           if (!arguments.length) return _changeset;
-           _changeset = val;
-           return success;
-         };
+               var yaw = _pannellumViewer.getYaw();

 
 

-         success.location = function (val) {
-           if (!arguments.length) return _location;
-           _location = val;
-           return success;
-         };
+               var ca = selected.ca + yaw;
+               var origin = selected.loc; // construct a search trapezoid pointing out from current bubble

 
 

-         return utilRebind(success, dispatch$1, 'on');
-       }
+               var meters = 35;
+               var p1 = [origin[0] + geoMetersToLon(meters / 5, origin[1]), origin[1]];
+               var p2 = [origin[0] + geoMetersToLon(meters / 2, origin[1]), origin[1] + geoMetersToLat(meters)];
+               var p3 = [origin[0] - geoMetersToLon(meters / 2, origin[1]), origin[1] + geoMetersToLat(meters)];
+               var p4 = [origin[0] - geoMetersToLon(meters / 5, origin[1]), origin[1]];
+               var poly = [p1, p2, p3, p4, p1]; // rotate it to face forward/backward

 
 

-       function modeSave(context) {
-         var mode = {
-           id: 'save'
-         };
-         var keybinding = utilKeybinding('modeSave');
-         var commit = uiCommit(context).on('cancel', cancel);
+               var angle = (stepBy === 1 ? ca : ca + 180) * (Math.PI / 180);
+               poly = geoRotate(poly, -angle, origin);
+               var extent = poly.reduce(function (extent, point) {
+                 return extent.extend(geoExtent(point));
+               }, geoExtent()); // find nearest other bubble in the search polygon

 
 

-         var _conflictsUi; // uiConflicts
+               var minDist = Infinity;

 
 

+               _ssCache.bubbles.rtree.search(extent.bbox()).forEach(function (d) {
+                 if (d.data.key === selected.key) return;
+                 if (!geoPointInPolygon(d.data.loc, poly)) return;
+                 var dist = geoVecLength(d.data.loc, selected.loc);
+                 var theta = selected.ca - d.data.ca;
+                 var minTheta = Math.min(Math.abs(theta), 360 - Math.abs(theta));

 
 

-         var _location;
+                 if (minTheta > 20) {
+                   dist += 5; // penalize distance if camera angles don't match
+                 }

 
 

-         var _success;
+                 if (dist < minDist) {
+                   nextID = d.data.key;
+                   minDist = dist;
+                 }
+               });

 
 

-         var uploader = context.uploader().on('saveStarted.modeSave', function () {
-           keybindingOff();
-         }) // fire off some async work that we want to be ready later
-         .on('willAttemptUpload.modeSave', prepareForSuccess).on('progressChanged.modeSave', showProgress).on('resultNoChanges.modeSave', function () {
-           cancel();
-         }).on('resultErrors.modeSave', showErrors).on('resultConflicts.modeSave', showConflicts).on('resultSuccess.modeSave', showSuccess);
+               var nextBubble = nextID && that.cachedImage(nextID);
+               if (!nextBubble) return;
+               context.map().centerEase(nextBubble.loc);
+               that.selectImage(context, nextBubble.key).yaw(yaw).showViewer(context);
+             };
+           }
+         },
+         yaw: function yaw(_yaw) {
+           if (typeof _yaw !== 'number') return _yaw;
+           _sceneOptions.yaw = _yaw;
+           return this;
+         },

 
 

-         function cancel() {
-           context.enter(modeBrowse(context));
-         }
+         /**
+          * showViewer()
+          */
+         showViewer: function showViewer(context) {
+           var wrap = context.container().select('.photoviewer').classed('hide', false);
+           var isHidden = wrap.selectAll('.photo-wrapper.ms-wrapper.hide').size();

 
 

-         function showProgress(num, total) {
-           var modal = context.container().select('.loading-modal .modal-section');
-           var progress = modal.selectAll('.progress').data([0]); // enter/update
+           if (isHidden) {
+             wrap.selectAll('.photo-wrapper:not(.ms-wrapper)').classed('hide', true);
+             wrap.selectAll('.photo-wrapper.ms-wrapper').classed('hide', false);
+           }

 
 

-           progress.enter().append('div').attr('class', 'progress').merge(progress).text(_t('save.conflict_progress', {
-             num: num,
-             total: total
-           }));
-         }
+           return this;
+         },

 
 

-         function showConflicts(changeset, conflicts, origChanges) {
-           var selection = context.container().select('.sidebar').append('div').attr('class', 'sidebar-component');
-           context.container().selectAll('.main-content').classed('active', true).classed('inactive', false);
-           _conflictsUi = uiConflicts(context).conflictList(conflicts).origChanges(origChanges).on('cancel', function () {
-             context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
-             selection.remove();
-             keybindingOn();
-             uploader.cancelConflictResolution();
-           }).on('save', function () {
-             context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
-             selection.remove();
-             uploader.processResolvedConflicts(changeset);
-           });
-           selection.call(_conflictsUi);
-         }
+         /**
+          * hideViewer()
+          */
+         hideViewer: function hideViewer(context) {
+           var viewer = context.container().select('.photoviewer');
+           if (!viewer.empty()) viewer.datum(null);
+           viewer.classed('hide', true).selectAll('.photo-wrapper').classed('hide', true);
+           context.container().selectAll('.viewfield-group, .sequence, .icon-sign').classed('currentView', false);
+           this.updateUrlImage(null);
+           return this.setStyles(context, null, true);
+         },

 
 

-         function showErrors(errors) {
-           keybindingOn();
-           var selection = uiConfirm(context.container());
-           selection.select('.modal-section.header').append('h3').text(_t('save.error'));
-           addErrors(selection, errors);
-           selection.okButton();
-         }
+         /**
+          * selectImage().
+          */
+         selectImage: function selectImage(context, key) {
+           var that = this;
+           var d = this.cachedImage(key);
+           var viewer = context.container().select('.photoviewer');
+           if (!viewer.empty()) viewer.datum(d);
+           this.setStyles(context, null, true);
+           var wrap = context.container().select('.photoviewer .ms-wrapper');
+           var attribution = wrap.selectAll('.photo-attribution').html('');
+           wrap.selectAll('.pnlm-load-box') // display "loading.."
+           .style('display', 'block');
+           if (!d) return this;
+           this.updateUrlImage(key);
+           _sceneOptions.northOffset = d.ca;
+           var line1 = attribution.append('div').attr('class', 'attribution-row');
+           var hiresDomId = utilUniqueDomId('streetside-hires'); // Add hires checkbox

 
 

-         function addErrors(selection, data) {
-           var message = selection.select('.modal-section.message-text');
-           var items = message.selectAll('.error-container').data(data);
-           var enter = items.enter().append('div').attr('class', 'error-container');
-           enter.append('a').attr('class', 'error-description').attr('href', '#').classed('hide-toggle', true).text(function (d) {
-             return d.msg || _t('save.unknown_error_details');
-           }).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             var error = select(this);
-             var detail = select(this.nextElementSibling);
-             var exp = error.classed('expanded');
-             detail.style('display', exp ? 'none' : 'block');
-             error.classed('expanded', !exp);
-           });
-           var details = enter.append('div').attr('class', 'error-detail-container').style('display', 'none');
-           details.append('ul').attr('class', 'error-detail-list').selectAll('li').data(function (d) {
-             return d.details || [];
-           }).enter().append('li').attr('class', 'error-detail-item').text(function (d) {
-             return d;
+           var label = line1.append('label').attr('for', hiresDomId).attr('class', 'streetside-hires');
+           label.append('input').attr('type', 'checkbox').attr('id', hiresDomId).property('checked', _hires).on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             _hires = !_hires;
+             _resolution = _hires ? 1024 : 512;
+             wrap.call(setupCanvas, true);
+             var viewstate = {
+               yaw: _pannellumViewer.getYaw(),
+               pitch: _pannellumViewer.getPitch(),
+               hfov: _pannellumViewer.getHfov()
+             };
+             _sceneOptions = Object.assign(_sceneOptions, viewstate);
+             that.selectImage(context, d.key).showViewer(context);

            });
            });

-           items.exit().remove();
-         }
+           label.append('span').html(_t.html('streetside.hires'));
+           var captureInfo = line1.append('div').attr('class', 'attribution-capture-info'); // Add capture date

 
 

-         function showSuccess(changeset) {
-           commit.reset();
+           if (d.captured_by) {
+             var yyyy = new Date().getFullYear();
+             captureInfo.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://www.microsoft.com/en-us/maps/streetside').html('©' + yyyy + ' Microsoft');
+             captureInfo.append('span').html('|');
+           }

 
 

-           var ui = _success.changeset(changeset).location(_location).on('cancel', function () {
-             context.ui().sidebar.hide();
-           });
+           if (d.captured_at) {
+             captureInfo.append('span').attr('class', 'captured_at').html(localeTimestamp(d.captured_at));
+           } // Add image links

 
 

-           context.enter(modeBrowse(context).sidebar(ui));
-         }

 
 

-         function keybindingOn() {
-           select(document).call(keybinding.on('⎋', cancel, true));
-         }
+           var line2 = attribution.append('div').attr('class', 'attribution-row');
+           line2.append('a').attr('class', 'image-view-link').attr('target', '_blank').attr('href', 'https://www.bing.com/maps?cp=' + d.loc[1] + '~' + d.loc[0] + '&lvl=17&dir=' + d.ca + '&style=x&v=2&sV=1').html(_t.html('streetside.view_on_bing'));
+           line2.append('a').attr('class', 'image-report-link').attr('target', '_blank').attr('href', 'https://www.bing.com/maps/privacyreport/streetsideprivacyreport?bubbleid=' + encodeURIComponent(d.key) + '&focus=photo&lat=' + d.loc[1] + '&lng=' + d.loc[0] + '&z=17').html(_t.html('streetside.report'));
+           var bubbleIdQuadKey = d.key.toString(4);
+           var paddingNeeded = 16 - bubbleIdQuadKey.length;

 
 

-         function keybindingOff() {
-           select(document).call(keybinding.unbind);
-         } // Reverse geocode current map location so we can display a message on
-         // the success screen like "Thank you for editing around place, region."
+           for (var i = 0; i < paddingNeeded; i++) {
+             bubbleIdQuadKey = '0' + bubbleIdQuadKey;
+           }

 
 

+           var imgUrlPrefix = streetsideImagesApi + 'hs' + bubbleIdQuadKey;
+           var imgUrlSuffix = '.jpg?g=6338&n=z'; // Cubemap face code order matters here: front=01, right=02, back=03, left=10, up=11, down=12

 
 

-         function prepareForSuccess() {
-           _success = uiSuccess(context);
-           _location = null;
-           if (!services.geocoder) return;
-           services.geocoder.reverse(context.map().center(), function (err, result) {
-             if (err || !result || !result.address) return;
-             var addr = result.address;
-             var place = addr && (addr.town || addr.city || addr.county) || '';
-             var region = addr && (addr.state || addr.country) || '';
-             var separator = place && region ? _t('success.thank_you_where.separator') : '';
-             _location = _t('success.thank_you_where.format', {
-               place: place,
-               separator: separator,
-               region: region
+           var faceKeys = ['01', '02', '03', '10', '11', '12']; // Map images to cube faces
+
+           var quadKeys = getQuadKeys();
+           var faces = faceKeys.map(function (faceKey) {
+             return quadKeys.map(function (quadKey) {
+               var xy = qkToXY(quadKey);
+               return {
+                 face: faceKey,
+                 url: imgUrlPrefix + faceKey + quadKey + imgUrlSuffix,
+                 x: xy[0],
+                 y: xy[1]
+               };

              });
            });
              });
            });

-         }
-
-         mode.selectedIDs = function () {
-           return _conflictsUi ? _conflictsUi.shownEntityIds() : [];
-         };
+           loadFaces(faces).then(function () {
+             if (!_pannellumViewer) {
+               that.initViewer();
+             } else {
+               // make a new scene
+               _currScene += 1;

 
 

-         mode.enter = function () {
-           // Show sidebar
-           context.ui().sidebar.expand();
+               var sceneID = _currScene.toString();

 
 

-           function done() {
-             context.ui().sidebar.show(commit);
-           }
+               _pannellumViewer.addScene(sceneID, _sceneOptions).loadScene(sceneID); // remove previous scene

 
 

-           keybindingOn();
-           context.container().selectAll('.main-content').classed('active', false).classed('inactive', true);
-           var osm = context.connection();

 
 

-           if (!osm) {
-             cancel();
-             return;
-           }
+               if (_currScene > 2) {
+                 sceneID = (_currScene - 1).toString();

 
 

-           if (osm.authenticated()) {
-             done();
-           } else {
-             osm.authenticate(function (err) {
-               if (err) {
-                 cancel();
-               } else {
-                 done();
+                 _pannellumViewer.removeScene(sceneID);

                }
                }

-             });
+             }
+           });
+           return this;
+         },
+         getSequenceKeyForBubble: function getSequenceKeyForBubble(d) {
+           return d && d.sequenceKey;
+         },
+         // Updates the currently highlighted sequence and selected bubble.
+         // Reset is only necessary when interacting with the viewport because
+         // this implicitly changes the currently selected bubble/sequence
+         setStyles: function setStyles(context, hovered, reset) {
+           if (reset) {
+             // reset all layers
+             context.container().selectAll('.viewfield-group').classed('highlighted', false).classed('hovered', false).classed('currentView', false);
+             context.container().selectAll('.sequence').classed('highlighted', false).classed('currentView', false);

            }
            }

-         };

 
 

-         mode.exit = function () {
-           keybindingOff();
-           context.container().selectAll('.main-content').classed('active', true).classed('inactive', false);
-           context.ui().sidebar.hide();
-         };
+           var hoveredBubbleKey = hovered && hovered.key;
+           var hoveredSequenceKey = this.getSequenceKeyForBubble(hovered);
+           var hoveredSequence = hoveredSequenceKey && _ssCache.sequences[hoveredSequenceKey];
+           var hoveredBubbleKeys = hoveredSequence && hoveredSequence.bubbles.map(function (d) {
+             return d.key;
+           }) || [];
+           var viewer = context.container().select('.photoviewer');
+           var selected = viewer.empty() ? undefined : viewer.datum();
+           var selectedBubbleKey = selected && selected.key;
+           var selectedSequenceKey = this.getSequenceKeyForBubble(selected);
+           var selectedSequence = selectedSequenceKey && _ssCache.sequences[selectedSequenceKey];
+           var selectedBubbleKeys = selectedSequence && selectedSequence.bubbles.map(function (d) {
+             return d.key;
+           }) || []; // highlight sibling viewfields on either the selected or the hovered sequences

 
 

-         return mode;
-       }
+           var highlightedBubbleKeys = utilArrayUnion(hoveredBubbleKeys, selectedBubbleKeys);
+           context.container().selectAll('.layer-streetside-images .viewfield-group').classed('highlighted', function (d) {
+             return highlightedBubbleKeys.indexOf(d.key) !== -1;
+           }).classed('hovered', function (d) {
+             return d.key === hoveredBubbleKey;
+           }).classed('currentView', function (d) {
+             return d.key === selectedBubbleKey;
+           });
+           context.container().selectAll('.layer-streetside-images .sequence').classed('highlighted', function (d) {
+             return d.properties.key === hoveredSequenceKey;
+           }).classed('currentView', function (d) {
+             return d.properties.key === selectedSequenceKey;
+           }); // update viewfields if needed

 
 

-       function uiToolOldDrawModes(context) {
-         var tool = {
-           id: 'old_modes',
-           label: _t.html('toolbar.add_feature')
-         };
-         var modes = [modeAddPoint(context, {
-           title: _t.html('modes.add_point.title'),
-           button: 'point',
-           description: _t.html('modes.add_point.description'),
-           preset: _mainPresetIndex.item('point'),
-           key: '1'
-         }), modeAddLine(context, {
-           title: _t.html('modes.add_line.title'),
-           button: 'line',
-           description: _t.html('modes.add_line.description'),
-           preset: _mainPresetIndex.item('line'),
-           key: '2'
-         }), modeAddArea(context, {
-           title: _t.html('modes.add_area.title'),
-           button: 'area',
-           description: _t.html('modes.add_area.description'),
-           preset: _mainPresetIndex.item('area'),
-           key: '3'
-         })];
+           context.container().selectAll('.layer-streetside-images .viewfield-group .viewfield').attr('d', viewfieldPath);

 
 

-         function enabled() {
-           return osmEditable();
-         }
+           function viewfieldPath() {
+             var d = this.parentNode.__data__;

 
 

-         function osmEditable() {
-           return context.editable();
-         }
+             if (d.pano && d.key !== selectedBubbleKey) {
+               return 'M 8,13 m -10,0 a 10,10 0 1,0 20,0 a 10,10 0 1,0 -20,0';
+             } else {
+               return 'M 6,9 C 8,8.4 8,8.4 10,9 L 16,-2 C 12,-5 4,-5 0,-2 z';
+             }
+           }

 
 

-         modes.forEach(function (mode) {
-           context.keybinding().on(mode.key, function () {
-             if (!enabled()) return;
+           return this;
+         },
+         updateUrlImage: function updateUrlImage(imageKey) {
+           if (!window.mocha) {
+             var hash = utilStringQs(window.location.hash);

 
 

-             if (mode.id === context.mode().id) {
-               context.enter(modeBrowse(context));
+             if (imageKey) {
+               hash.photo = 'streetside/' + imageKey;

              } else {
              } else {

-               context.enter(mode);
+               delete hash.photo;

              }
              }

-           });
-         });

 
 

-         tool.render = function (selection) {
-           var wrap = selection.append('div').attr('class', 'joined').style('display', 'flex');
-
-           var debouncedUpdate = debounce(update, 500, {
-             leading: true,
-             trailing: true
-           });
+             window.location.replace('#' + utilQsString(hash, true));
+           }
+         },

 
 

-           context.map().on('move.modes', debouncedUpdate).on('drawn.modes', debouncedUpdate);
-           context.on('enter.modes', update);
-           update();
+         /**
+          * cache().
+          */
+         cache: function cache() {
+           return _ssCache;
+         }
+       };

 
 

-           function update() {
-             var buttons = wrap.selectAll('button.add-button').data(modes, function (d) {
-               return d.id;
-             }); // exit
+       var _apibase = 'https://taginfo.openstreetmap.org/api/4/';
+       var _inflight = {};
+       var _popularKeys = {};
+       var _taginfoCache = {};
+       var tag_sorts = {
+         point: 'count_nodes',
+         vertex: 'count_nodes',
+         area: 'count_ways',
+         line: 'count_ways'
+       };
+       var tag_sort_members = {
+         point: 'count_node_members',
+         vertex: 'count_node_members',
+         area: 'count_way_members',
+         line: 'count_way_members',
+         relation: 'count_relation_members'
+       };
+       var tag_filters = {
+         point: 'nodes',
+         vertex: 'nodes',
+         area: 'ways',
+         line: 'ways'
+       };
+       var tag_members_fractions = {
+         point: 'count_node_members_fraction',
+         vertex: 'count_node_members_fraction',
+         area: 'count_way_members_fraction',
+         line: 'count_way_members_fraction',
+         relation: 'count_relation_members_fraction'
+       };

 
 

-             buttons.exit().remove(); // enter
+       function sets(params, n, o) {
+         if (params.geometry && o[params.geometry]) {
+           params[n] = o[params.geometry];
+         }

 
 

-             var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
-               return d.id + ' add-button bar-button';
-             }).on('click.mode-buttons', function (d3_event, d) {
-               if (!enabled()) return; // When drawing, ignore accidental clicks on mode buttons - #4042
+         return params;
+       }

 
 

-               var currMode = context.mode().id;
-               if (/^draw/.test(currMode)) return;
+       function setFilter(params) {
+         return sets(params, 'filter', tag_filters);
+       }

 
 

-               if (d.id === currMode) {
-                 context.enter(modeBrowse(context));
-               } else {
-                 context.enter(d);
-               }
-             }).call(uiTooltip().placement('bottom').title(function (d) {
-               return d.description;
-             }).keys(function (d) {
-               return [d.key];
-             }).scrollContainer(context.container().select('.top-toolbar')));
-             buttonsEnter.each(function (d) {
-               select(this).call(svgIcon('#iD-icon-' + d.button));
-             });
-             buttonsEnter.append('span').attr('class', 'label').html(function (mode) {
-               return mode.title;
-             }); // if we are adding/removing the buttons, check if toolbar has overflowed
+       function setSort(params) {
+         return sets(params, 'sortname', tag_sorts);
+       }

 
 

-             if (buttons.enter().size() || buttons.exit().size()) {
-               context.ui().checkOverflow('.top-toolbar', true);
-             } // update
+       function setSortMembers(params) {
+         return sets(params, 'sortname', tag_sort_members);
+       }

 
 

+       function clean(params) {
+         return utilObjectOmit(params, ['geometry', 'debounce']);
+       }

 
 

-             buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
-               return !enabled();
-             }).classed('active', function (d) {
-               return context.mode() && context.mode().button === d.button;
-             });
-           }
+       function filterKeys(type) {
+         var count_type = type ? 'count_' + type : 'count_all';
+         return function (d) {
+           return parseFloat(d[count_type]) > 2500 || d.in_wiki;

          };
          };

-
-         return tool;

        }
 
        }
 

-       function uiToolNotes(context) {
-         var tool = {
-           id: 'notes',
-           label: _t.html('modes.add_note.label')
+       function filterMultikeys(prefix) {
+         return function (d) {
+           // d.key begins with prefix, and d.key contains no additional ':'s
+           var re = new RegExp('^' + prefix + '(.*)$');
+           var matches = d.key.match(re) || [];
+           return matches.length === 2 && matches[1].indexOf(':') === -1;

          };
          };

-         var mode = modeAddNote(context);
-
-         function enabled() {
-           return notesEnabled() && notesEditable();
-         }
-
-         function notesEnabled() {
-           var noteLayer = context.layers().layer('notes');
-           return noteLayer && noteLayer.enabled();
-         }
-
-         function notesEditable() {
-           var mode = context.mode();
-           return context.map().notesEditable() && mode && mode.id !== 'save';
-         }
-
-         context.keybinding().on(mode.key, function () {
-           if (!enabled()) return;
+       }

 
 

-           if (mode.id === context.mode().id) {
-             context.enter(modeBrowse(context));
-           } else {
-             context.enter(mode);
-           }
-         });
+       function filterValues(allowUpperCase) {
+         return function (d) {
+           if (d.value.match(/[;,]/) !== null) return false; // exclude some punctuation

 
 

-         tool.render = function (selection) {
-           var debouncedUpdate = debounce(update, 500, {
-             leading: true,
-             trailing: true
-           });
+           if (!allowUpperCase && d.value.match(/[A-Z*]/) !== null) return false; // exclude uppercase letters

 
 

-           context.map().on('move.notes', debouncedUpdate).on('drawn.notes', debouncedUpdate);
-           context.on('enter.notes', update);
-           update();
+           return parseFloat(d.fraction) > 0.0;
+         };
+       }

 
 

-           function update() {
-             var showNotes = notesEnabled();
-             var data = showNotes ? [mode] : [];
-             var buttons = selection.selectAll('button.add-button').data(data, function (d) {
-               return d.id;
-             }); // exit
+       function filterRoles(geometry) {
+         return function (d) {
+           if (d.role === '') return false; // exclude empty role

 
 

-             buttons.exit().remove(); // enter
+           if (d.role.match(/[A-Z*;,]/) !== null) return false; // exclude uppercase letters and some punctuation

 
 

-             var buttonsEnter = buttons.enter().append('button').attr('class', function (d) {
-               return d.id + ' add-button bar-button';
-             }).on('click.notes', function (d3_event, d) {
-               if (!enabled()) return; // When drawing, ignore accidental clicks on mode buttons - #4042
+           return parseFloat(d[tag_members_fractions[geometry]]) > 0.0;
+         };
+       }

 
 

-               var currMode = context.mode().id;
-               if (/^draw/.test(currMode)) return;
+       function valKey(d) {
+         return {
+           value: d.key,
+           title: d.key
+         };
+       }

 
 

-               if (d.id === currMode) {
-                 context.enter(modeBrowse(context));
-               } else {
-                 context.enter(d);
-               }
-             }).call(uiTooltip().placement('bottom').title(function (d) {
-               return d.description;
-             }).keys(function (d) {
-               return [d.key];
-             }).scrollContainer(context.container().select('.top-toolbar')));
-             buttonsEnter.each(function (d) {
-               select(this).call(svgIcon(d.icon || '#iD-icon-' + d.button));
-             }); // if we are adding/removing the buttons, check if toolbar has overflowed
+       function valKeyDescription(d) {
+         var obj = {
+           value: d.value,
+           title: d.description || d.value
+         };

 
 

-             if (buttons.enter().size() || buttons.exit().size()) {
-               context.ui().checkOverflow('.top-toolbar', true);
-             } // update
+         if (d.count) {
+           obj.count = d.count;
+         }

 
 

+         return obj;
+       }

 
 

-             buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
-               return !enabled();
-             }).classed('active', function (d) {
-               return context.mode() && context.mode().button === d.button;
-             });
-           }
+       function roleKey(d) {
+         return {
+           value: d.role,
+           title: d.role

          };
          };

+       } // sort keys with ':' lower than keys without ':'

 
 

-         tool.uninstall = function () {
-           context.on('enter.editor.notes', null).on('exit.editor.notes', null).on('enter.notes', null);
-           context.map().on('move.notes', null).on('drawn.notes', null);
-         };

 
 

-         return tool;
+       function sortKeys(a, b) {
+         return a.key.indexOf(':') === -1 && b.key.indexOf(':') !== -1 ? -1 : a.key.indexOf(':') !== -1 && b.key.indexOf(':') === -1 ? 1 : 0;

        }
 
        }
 

-       function uiToolSave(context) {
-         var tool = {
-           id: 'save',
-           label: _t.html('save.title')
-         };
-         var button = null;
-         var tooltipBehavior = null;
-         var history = context.history();
-         var key = uiCmd('⌘S');
-         var _numChanges = 0;
+       var debouncedRequest = debounce(request, 300, {
+         leading: false
+       });

 
 

-         function isSaving() {
-           var mode = context.mode();
-           return mode && mode.id === 'save';
-         }
+       function request(url, params, exactMatch, callback, loaded) {
+         if (_inflight[url]) return;
+         if (checkCache(url, params, exactMatch, callback)) return;
+         var controller = new AbortController();
+         _inflight[url] = controller;
+         d3_json(url, {
+           signal: controller.signal
+         }).then(function (result) {
+           delete _inflight[url];
+           if (loaded) loaded(null, result);
+         })["catch"](function (err) {
+           delete _inflight[url];
+           if (err.name === 'AbortError') return;
+           if (loaded) loaded(err.message);
+         });
+       }

 
 

-         function isDisabled() {
-           return _numChanges === 0 || isSaving();
-         }
+       function checkCache(url, params, exactMatch, callback) {
+         var rp = params.rp || 25;
+         var testQuery = params.query || '';
+         var testUrl = url;

 
 

-         function save(d3_event) {
-           d3_event.preventDefault();
+         do {
+           var hit = _taginfoCache[testUrl]; // exact match, or shorter match yielding fewer than max results (rp)

 
 

-           if (!context.inIntro() && !isSaving() && history.hasChanges()) {
-             context.enter(modeSave(context));
-           }
-         }
+           if (hit && (url === testUrl || hit.length < rp)) {
+             callback(null, hit);
+             return true;
+           } // don't try to shorten the query

 
 

-         function bgColor() {
-           var step;

 
 

-           if (_numChanges === 0) {
-             return null;
-           } else if (_numChanges <= 50) {
-             step = _numChanges / 50;
-             return d3_interpolateRgb('#fff', '#ff8')(step); // white -> yellow
-           } else {
-             step = Math.min((_numChanges - 50) / 50, 1.0);
-             return d3_interpolateRgb('#ff8', '#f88')(step); // yellow -> red
-           }
-         }
+           if (exactMatch || !testQuery.length) return false; // do shorten the query to see if we already have a cached result
+           // that has returned fewer than max results (rp)

 
 

-         function updateCount() {
-           var val = history.difference().summary().length;
-           if (val === _numChanges) return;
-           _numChanges = val;
+           testQuery = testQuery.slice(0, -1);
+           testUrl = url.replace(/&query=(.*?)&/, '&query=' + testQuery + '&');
+         } while (testQuery.length >= 0);

 
 

-           if (tooltipBehavior) {
-             tooltipBehavior.title(_t.html(_numChanges > 0 ? 'save.help' : 'save.no_changes')).keys([key]);
-           }
+         return false;
+       }

 
 

-           if (button) {
-             button.classed('disabled', isDisabled()).style('background', bgColor());
-             button.select('span.count').html(_numChanges);
-           }
-         }
+       var serviceTaginfo = {
+         init: function init() {
+           _inflight = {};
+           _taginfoCache = {};
+           _popularKeys = {
+             // manually exclude some keys – #5377, #7485
+             postal_code: true,
+             full_name: true,
+             loc_name: true,
+             reg_name: true,
+             short_name: true,
+             sorting_name: true,
+             artist_name: true,
+             nat_name: true,
+             long_name: true,
+             'bridge:name': true
+           }; // Fetch popular keys.  We'll exclude these from `values`
+           // lookups because they stress taginfo, and they aren't likely
+           // to yield meaningful autocomplete results.. see #3955

 
 

-         tool.render = function (selection) {
-           tooltipBehavior = uiTooltip().placement('bottom').title(_t.html('save.no_changes')).keys([key]).scrollContainer(context.container().select('.top-toolbar'));
-           var lastPointerUpType;
-           button = selection.append('button').attr('class', 'save disabled bar-button').on('pointerup', function (d3_event) {
-             lastPointerUpType = d3_event.pointerType;
-           }).on('click', function (d3_event) {
-             save(d3_event);
+           var params = {
+             rp: 100,
+             sortname: 'values_all',
+             sortorder: 'desc',
+             page: 1,
+             debounce: false,
+             lang: _mainLocalizer.languageCode()
+           };
+           this.keys(params, function (err, data) {
+             if (err) return;
+             data.forEach(function (d) {
+               if (d.value === 'opening_hours') return; // exception

 
 

-             if (_numChanges === 0 && (lastPointerUpType === 'touch' || lastPointerUpType === 'pen')) {
-               // there are no tooltips for touch interactions so flash feedback instead
-               context.ui().flash.duration(2000).iconName('#iD-icon-save').iconClass('disabled').label(_t.html('save.no_changes'))();
+               _popularKeys[d.value] = true;
+             });
+           });
+         },
+         reset: function reset() {
+           Object.values(_inflight).forEach(function (controller) {
+             controller.abort();
+           });
+           _inflight = {};
+         },
+         keys: function keys(params, callback) {
+           var doRequest = params.debounce ? debouncedRequest : request;
+           params = clean(setSort(params));
+           params = Object.assign({
+             rp: 10,
+             sortname: 'count_all',
+             sortorder: 'desc',
+             page: 1,
+             lang: _mainLocalizer.languageCode()
+           }, params);
+           var url = _apibase + 'keys/all?' + utilQsString(params);
+           doRequest(url, params, false, callback, function (err, d) {
+             if (err) {
+               callback(err);
+             } else {
+               var f = filterKeys(params.filter);
+               var result = d.data.filter(f).sort(sortKeys).map(valKey);
+               _taginfoCache[url] = result;
+               callback(null, result);
+             }
+           });
+         },
+         multikeys: function multikeys(params, callback) {
+           var doRequest = params.debounce ? debouncedRequest : request;
+           params = clean(setSort(params));
+           params = Object.assign({
+             rp: 25,
+             sortname: 'count_all',
+             sortorder: 'desc',
+             page: 1,
+             lang: _mainLocalizer.languageCode()
+           }, params);
+           var prefix = params.query;
+           var url = _apibase + 'keys/all?' + utilQsString(params);
+           doRequest(url, params, true, callback, function (err, d) {
+             if (err) {
+               callback(err);
+             } else {
+               var f = filterMultikeys(prefix);
+               var result = d.data.filter(f).map(valKey);
+               _taginfoCache[url] = result;
+               callback(null, result);

              }
              }

+           });
+         },
+         values: function values(params, callback) {
+           // Exclude popular keys from values lookups.. see #3955
+           var key = params.key;

 
 

-             lastPointerUpType = null;
-           }).call(tooltipBehavior);
-           button.call(svgIcon('#iD-icon-save'));
-           button.append('span').attr('class', 'count').attr('aria-hidden', 'true').html('0');
-           updateCount();
-           context.keybinding().on(key, save, true);
-           context.history().on('change.save', updateCount);
-           context.on('enter.save', function () {
-             if (button) {
-               button.classed('disabled', isDisabled());
+           if (key && _popularKeys[key]) {
+             callback(null, []);
+             return;
+           }

 
 

-               if (isSaving()) {
-                 button.call(tooltipBehavior.hide);
-               }
+           var doRequest = params.debounce ? debouncedRequest : request;
+           params = clean(setSort(setFilter(params)));
+           params = Object.assign({
+             rp: 25,
+             sortname: 'count_all',
+             sortorder: 'desc',
+             page: 1,
+             lang: _mainLocalizer.languageCode()
+           }, params);
+           var url = _apibase + 'key/values?' + utilQsString(params);
+           doRequest(url, params, false, callback, function (err, d) {
+             if (err) {
+               callback(err);
+             } else {
+               // In most cases we prefer taginfo value results with lowercase letters.
+               // A few OSM keys expect values to contain uppercase values (see #3377).
+               // This is not an exhaustive list (e.g. `name` also has uppercase values)
+               // but these are the fields where taginfo value lookup is most useful.
+               var re = /network|taxon|genus|species|brand|grape_variety|royal_cypher|listed_status|booth|rating|stars|:output|_hours|_times|_ref|manufacturer|country|target|brewery/;
+               var allowUpperCase = re.test(params.key);
+               var f = filterValues(allowUpperCase);
+               var result = d.data.filter(f).map(valKeyDescription);
+               _taginfoCache[url] = result;
+               callback(null, result);

              }
            });
              }
            });

-         };
+         },
+         roles: function roles(params, callback) {
+           var doRequest = params.debounce ? debouncedRequest : request;
+           var geometry = params.geometry;
+           params = clean(setSortMembers(params));
+           params = Object.assign({
+             rp: 25,
+             sortname: 'count_all_members',
+             sortorder: 'desc',
+             page: 1,
+             lang: _mainLocalizer.languageCode()
+           }, params);
+           var url = _apibase + 'relation/roles?' + utilQsString(params);
+           doRequest(url, params, true, callback, function (err, d) {
+             if (err) {
+               callback(err);
+             } else {
+               var f = filterRoles(geometry);
+               var result = d.data.filter(f).map(roleKey);
+               _taginfoCache[url] = result;
+               callback(null, result);
+             }
+           });
+         },
+         docs: function docs(params, callback) {
+           var doRequest = params.debounce ? debouncedRequest : request;
+           params = clean(setSort(params));
+           var path = 'key/wiki_pages?';

 
 

-         tool.uninstall = function () {
-           context.keybinding().off(key, true);
-           context.history().on('change.save', null);
-           context.on('enter.save', null);
-           button = null;
-           tooltipBehavior = null;
-         };
+           if (params.value) {
+             path = 'tag/wiki_pages?';
+           } else if (params.rtype) {
+             path = 'relation/wiki_pages?';
+           }
+
+           var url = _apibase + path + utilQsString(params);
+           doRequest(url, params, true, callback, function (err, d) {
+             if (err) {
+               callback(err);
+             } else {
+               _taginfoCache[url] = d.data;
+               callback(null, d.data);
+             }
+           });
+         },
+         apibase: function apibase(_) {
+           if (!arguments.length) return _apibase;
+           _apibase = _;
+           return this;
+         }
+       };

 
 

-         return tool;
-       }
+       /**
+        * Wraps a GeoJSON {@link Geometry} in a GeoJSON {@link Feature}.
+        *
+        * @name feature
+        * @param {Geometry} geometry input geometry
+        * @param {Object} [properties={}] an Object of key-value pairs to add as properties
+        * @param {Object} [options={}] Optional Parameters
+        * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
+        * @param {string|number} [options.id] Identifier associated with the Feature
+        * @returns {Feature} a GeoJSON Feature
+        * @example
+        * var geometry = {
+        *   "type": "Point",
+        *   "coordinates": [110, 50]
+        * };
+        *
+        * var feature = turf.feature(geometry);
+        *
+        * //=feature
+        */

 
 

-       function uiToolSidebarToggle(context) {
-         var tool = {
-           id: 'sidebar_toggle',
-           label: _t.html('toolbar.inspect')
-         };
+       function feature(geom, properties, options) {
+         if (options === void 0) {
+           options = {};
+         }

 
 

-         tool.render = function (selection) {
-           selection.append('button').attr('class', 'bar-button').on('click', function () {
-             context.ui().sidebar.toggle();
-           }).call(uiTooltip().placement('bottom').title(_t.html('sidebar.tooltip')).keys([_t('sidebar.key')]).scrollContainer(context.container().select('.top-toolbar'))).call(svgIcon('#iD-icon-sidebar-' + (_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')));
+         var feat = {
+           type: "Feature"

          };
 
          };
 

-         return tool;
-       }
+         if (options.id === 0 || options.id) {
+           feat.id = options.id;
+         }

 
 

-       function uiToolUndoRedo(context) {
-         var tool = {
-           id: 'undo_redo',
-           label: _t.html('toolbar.undo_redo')
-         };
-         var commands = [{
-           id: 'undo',
-           cmd: uiCmd('⌘Z'),
-           action: function action() {
-             context.undo();
-           },
-           annotation: function annotation() {
-             return context.history().undoAnnotation();
-           },
-           icon: 'iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo')
-         }, {
-           id: 'redo',
-           cmd: uiCmd('⌘⇧Z'),
-           action: function action() {
-             context.redo();
-           },
-           annotation: function annotation() {
-             return context.history().redoAnnotation();
-           },
-           icon: 'iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'undo' : 'redo')
-         }];
+         if (options.bbox) {
+           feat.bbox = options.bbox;
+         }

 
 

-         function editable() {
-           return context.mode() && context.mode().id !== 'save' && context.map().editableDataEnabled(true
-           /* ignore min zoom */
-           );
+         feat.properties = properties || {};
+         feat.geometry = geom;
+         return feat;
+       }
+       /**
+        * Creates a {@link Polygon} {@link Feature} from an Array of LinearRings.
+        *
+        * @name polygon
+        * @param {Array<Array<Array<number>>>} coordinates an array of LinearRings
+        * @param {Object} [properties={}] an Object of key-value pairs to add as properties
+        * @param {Object} [options={}] Optional Parameters
+        * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
+        * @param {string|number} [options.id] Identifier associated with the Feature
+        * @returns {Feature<Polygon>} Polygon Feature
+        * @example
+        * var polygon = turf.polygon([[[-5, 52], [-4, 56], [-2, 51], [-7, 54], [-5, 52]]], { name: 'poly1' });
+        *
+        * //=polygon
+        */
+
+       function polygon(coordinates, properties, options) {
+         if (options === void 0) {
+           options = {};

          }
 
          }
 

-         tool.render = function (selection) {
-           var tooltipBehavior = uiTooltip().placement('bottom').title(function (d) {
-             return d.annotation() ? _t.html(d.id + '.tooltip', {
-               action: d.annotation()
-             }) : _t.html(d.id + '.nothing');
-           }).keys(function (d) {
-             return [d.cmd];
-           }).scrollContainer(context.container().select('.top-toolbar'));
-           var lastPointerUpType;
-           var buttons = selection.selectAll('button').data(commands).enter().append('button').attr('class', function (d) {
-             return 'disabled ' + d.id + '-button bar-button';
-           }).on('pointerup', function (d3_event) {
-             // `pointerup` is always called before `click`
-             lastPointerUpType = d3_event.pointerType;
-           }).on('click', function (d3_event, d) {
-             d3_event.preventDefault();
-             var annotation = d.annotation();
+         for (var _i = 0, coordinates_1 = coordinates; _i < coordinates_1.length; _i++) {
+           var ring = coordinates_1[_i];

 
 

-             if (editable() && annotation) {
-               d.action();
-             }
+           if (ring.length < 4) {
+             throw new Error("Each LinearRing of a Polygon must have 4 or more Positions.");
+           }

 
 

-             if (editable() && (lastPointerUpType === 'touch' || lastPointerUpType === 'pen')) {
-               // there are no tooltips for touch interactions so flash feedback instead
-               var text = annotation ? _t(d.id + '.tooltip', {
-                 action: annotation
-               }) : _t(d.id + '.nothing');
-               context.ui().flash.duration(2000).iconName('#' + d.icon).iconClass(annotation ? '' : 'disabled').label(text)();
+           for (var j = 0; j < ring[ring.length - 1].length; j++) {
+             // Check if first point of Polygon contains two numbers
+             if (ring[ring.length - 1][j] !== ring[0][j]) {
+               throw new Error("First and last Position are not equivalent.");

              }
              }

+           }
+         }

 
 

-             lastPointerUpType = null;
-           }).call(tooltipBehavior);
-           buttons.each(function (d) {
-             select(this).call(svgIcon('#' + d.icon));
-           });
-           context.keybinding().on(commands[0].cmd, function (d3_event) {
-             d3_event.preventDefault();
-             if (editable()) commands[0].action();
-           }).on(commands[1].cmd, function (d3_event) {
-             d3_event.preventDefault();
-             if (editable()) commands[1].action();
-           });
-
-           var debouncedUpdate = debounce(update, 500, {
-             leading: true,
-             trailing: true
-           });
+         var geom = {
+           type: "Polygon",
+           coordinates: coordinates
+         };
+         return feature(geom, properties, options);
+       }
+       /**
+        * Creates a {@link LineString} {@link Feature} from an Array of Positions.
+        *
+        * @name lineString
+        * @param {Array<Array<number>>} coordinates an array of Positions
+        * @param {Object} [properties={}] an Object of key-value pairs to add as properties
+        * @param {Object} [options={}] Optional Parameters
+        * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
+        * @param {string|number} [options.id] Identifier associated with the Feature
+        * @returns {Feature<LineString>} LineString Feature
+        * @example
+        * var linestring1 = turf.lineString([[-24, 63], [-23, 60], [-25, 65], [-20, 69]], {name: 'line 1'});
+        * var linestring2 = turf.lineString([[-14, 43], [-13, 40], [-15, 45], [-10, 49]], {name: 'line 2'});
+        *
+        * //=linestring1
+        * //=linestring2
+        */

 
 

-           context.map().on('move.undo_redo', debouncedUpdate).on('drawn.undo_redo', debouncedUpdate);
-           context.history().on('change.undo_redo', function (difference) {
-             if (difference) update();
-           });
-           context.on('enter.undo_redo', update);
+       function lineString(coordinates, properties, options) {
+         if (options === void 0) {
+           options = {};
+         }

 
 

-           function update() {
-             buttons.classed('disabled', function (d) {
-               return !editable() || !d.annotation();
-             }).each(function () {
-               var selection = select(this);
+         if (coordinates.length < 2) {
+           throw new Error("coordinates must be an array of two or more positions");
+         }

 
 

-               if (!selection.select('.tooltip.in').empty()) {
-                 selection.call(tooltipBehavior.updateContent);
-               }
-             });
-           }
+         var geom = {
+           type: "LineString",
+           coordinates: coordinates

          };
          };

+         return feature(geom, properties, options);
+       }
+       /**
+        * Creates a {@link Feature<MultiLineString>} based on a
+        * coordinate array. Properties can be added optionally.
+        *
+        * @name multiLineString
+        * @param {Array<Array<Array<number>>>} coordinates an array of LineStrings
+        * @param {Object} [properties={}] an Object of key-value pairs to add as properties
+        * @param {Object} [options={}] Optional Parameters
+        * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
+        * @param {string|number} [options.id] Identifier associated with the Feature
+        * @returns {Feature<MultiLineString>} a MultiLineString feature
+        * @throws {Error} if no coordinates are passed
+        * @example
+        * var multiLine = turf.multiLineString([[[0,0],[10,10]]]);
+        *
+        * //=multiLine
+        */

 
 

-         tool.uninstall = function () {
-           context.keybinding().off(commands[0].cmd).off(commands[1].cmd);
-           context.map().on('move.undo_redo', null).on('drawn.undo_redo', null);
-           context.history().on('change.undo_redo', null);
-           context.on('enter.undo_redo', null);
+       function multiLineString(coordinates, properties, options) {
+         if (options === void 0) {
+           options = {};
+         }
+
+         var geom = {
+           type: "MultiLineString",
+           coordinates: coordinates

          };
          };

+         return feature(geom, properties, options);
+       }
+       /**
+        * Creates a {@link Feature<MultiPolygon>} based on a
+        * coordinate array. Properties can be added optionally.
+        *
+        * @name multiPolygon
+        * @param {Array<Array<Array<Array<number>>>>} coordinates an array of Polygons
+        * @param {Object} [properties={}] an Object of key-value pairs to add as properties
+        * @param {Object} [options={}] Optional Parameters
+        * @param {Array<number>} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature
+        * @param {string|number} [options.id] Identifier associated with the Feature
+        * @returns {Feature<MultiPolygon>} a multipolygon feature
+        * @throws {Error} if no coordinates are passed
+        * @example
+        * var multiPoly = turf.multiPolygon([[[[0,0],[0,10],[10,10],[10,0],[0,0]]]]);
+        *
+        * //=multiPoly
+        *
+        */

 
 

-         return tool;
+       function multiPolygon(coordinates, properties, options) {
+         if (options === void 0) {
+           options = {};
+         }
+
+         var geom = {
+           type: "MultiPolygon",
+           coordinates: coordinates
+         };
+         return feature(geom, properties, options);

        }
 
        }
 

-       function uiTopToolbar(context) {
-         var sidebarToggle = uiToolSidebarToggle(context),
-             modes = uiToolOldDrawModes(context),
-             notes = uiToolNotes(context),
-             undoRedo = uiToolUndoRedo(context),
-             save = uiToolSave(context);
+       /**
+        * Get Geometry from Feature or Geometry Object
+        *
+        * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object
+        * @returns {Geometry|null} GeoJSON Geometry Object
+        * @throws {Error} if geojson is not a Feature or Geometry Object
+        * @example
+        * var point = {
+        *   "type": "Feature",
+        *   "properties": {},
+        *   "geometry": {
+        *     "type": "Point",
+        *     "coordinates": [110, 40]
+        *   }
+        * }
+        * var geom = turf.getGeom(point)
+        * //={"type": "Point", "coordinates": [110, 40]}
+        */

 
 

-         function notesEnabled() {
-           var noteLayer = context.layers().layer('notes');
-           return noteLayer && noteLayer.enabled();
+       function getGeom(geojson) {
+         if (geojson.type === "Feature") {
+           return geojson.geometry;

          }
 
          }
 

-         function topToolbar(bar) {
-           bar.on('wheel.topToolbar', function (d3_event) {
-             if (!d3_event.deltaX) {
-               // translate vertical scrolling into horizontal scrolling in case
-               // the user doesn't have an input device that can scroll horizontally
-               bar.node().scrollLeft += d3_event.deltaY;
-             }
-           });
+         return geojson;
+       }

 
 

-           var debouncedUpdate = debounce(update, 500, {
-             leading: true,
-             trailing: true
-           });
+       // Cohen-Sutherland line clipping algorithm, adapted to efficiently
+       // handle polylines rather than just segments
+       function lineclip(points, bbox, result) {
+         var len = points.length,
+             codeA = bitCode(points[0], bbox),
+             part = [],
+             i,
+             codeB,
+             lastCode;
+         var a;
+         var b;
+         if (!result) result = [];

 
 

-           context.layers().on('change.topToolbar', debouncedUpdate);
-           update();
+         for (i = 1; i < len; i++) {
+           a = points[i - 1];
+           b = points[i];
+           codeB = lastCode = bitCode(b, bbox);

 
 

-           function update() {
-             var tools = [sidebarToggle, 'spacer', modes];
-             tools.push('spacer');
+           while (true) {
+             if (!(codeA | codeB)) {
+               // accept
+               part.push(a);

 
 

-             if (notesEnabled()) {
-               tools = tools.concat([notes, 'spacer']);
-             }
+               if (codeB !== lastCode) {
+                 // segment went outside
+                 part.push(b);

 
 

-             tools = tools.concat([undoRedo, save]);
-             var toolbarItems = bar.selectAll('.toolbar-item').data(tools, function (d) {
-               return d.id || d;
-             });
-             toolbarItems.exit().each(function (d) {
-               if (d.uninstall) {
-                 d.uninstall();
+                 if (i < len - 1) {
+                   // start a new line
+                   result.push(part);
+                   part = [];
+                 }
+               } else if (i === len - 1) {
+                 part.push(b);

                }
                }

-             }).remove();
-             var itemsEnter = toolbarItems.enter().append('div').attr('class', function (d) {
-               var classes = 'toolbar-item ' + (d.id || d).replace('_', '-');
-               if (d.klass) classes += ' ' + d.klass;
-               return classes;
-             });
-             var actionableItems = itemsEnter.filter(function (d) {
-               return d !== 'spacer';
-             });
-             actionableItems.append('div').attr('class', 'item-content').each(function (d) {
-               select(this).call(d.render, bar);
-             });
-             actionableItems.append('div').attr('class', 'item-label').html(function (d) {
-               return d.label;
-             });
-           }
-         }
-
-         return topToolbar;
-       }

 
 

-       var sawVersion = null;
-       var isNewVersion = false;
-       var isNewUser = false;
-       function uiVersion(context) {
-         var currVersion = context.version;
-         var matchedVersion = currVersion.match(/\d+\.\d+\.\d+.*/);
-
-         if (sawVersion === null && matchedVersion !== null) {
-           if (corePreferences('sawVersion')) {
-             isNewUser = false;
-             isNewVersion = corePreferences('sawVersion') !== currVersion && currVersion.indexOf('-') === -1;
-           } else {
-             isNewUser = true;
-             isNewVersion = true;
+               break;
+             } else if (codeA & codeB) {
+               // trivial reject
+               break;
+             } else if (codeA) {
+               // a outside, intersect with clip edge
+               a = intersect(a, b, codeA, bbox);
+               codeA = bitCode(a, bbox);
+             } else {
+               // b outside
+               b = intersect(a, b, codeB, bbox);
+               codeB = bitCode(b, bbox);
+             }

            }
 
            }
 

-           corePreferences('sawVersion', currVersion);
-           sawVersion = currVersion;
+           codeA = lastCode;

          }
 
          }
 

-         return function (selection) {
-           selection.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD').html(currVersion); // only show new version indicator to users that have used iD before
+         if (part.length) result.push(part);
+         return result;
+       } // Sutherland-Hodgeman polygon clipping algorithm

 
 

-           if (isNewVersion && !isNewUser) {
-             selection.append('div').attr('class', 'badge').append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/blob/release/CHANGELOG.md#whats-new').call(svgIcon('#maki-gift-11')).call(uiTooltip().title(_t.html('version.whats_new', {
-               version: currVersion
-             })).placement('top'));
-           }
-         };
-       }
+       function polygonclip(points, bbox) {
+         var result, edge, prev, prevInside, i, p, inside; // clip against each side of the clip rectangle

 
 

-       function uiZoom(context) {
-         var zooms = [{
-           id: 'zoom-in',
-           icon: 'iD-icon-plus',
-           title: _t.html('zoom.in'),
-           action: zoomIn,
-           disabled: function disabled() {
-             return !context.map().canZoomIn();
-           },
-           disabledTitle: _t.html('zoom.disabled.in'),
-           key: '+'
-         }, {
-           id: 'zoom-out',
-           icon: 'iD-icon-minus',
-           title: _t.html('zoom.out'),
-           action: zoomOut,
-           disabled: function disabled() {
-             return !context.map().canZoomOut();
-           },
-           disabledTitle: _t.html('zoom.disabled.out'),
-           key: '-'
-         }];
+         for (edge = 1; edge <= 8; edge *= 2) {
+           result = [];
+           prev = points[points.length - 1];
+           prevInside = !(bitCode(prev, bbox) & edge);

 
 

-         function zoomIn(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomIn();
-         }
+           for (i = 0; i < points.length; i++) {
+             p = points[i];
+             inside = !(bitCode(p, bbox) & edge); // if segment goes through the clip window, add an intersection

 
 

-         function zoomOut(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomOut();
-         }
+             if (inside !== prevInside) result.push(intersect(prev, p, edge, bbox));
+             if (inside) result.push(p); // add a point if it's inside

 
 

-         function zoomInFurther(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomInFurther();
-         }
+             prev = p;
+             prevInside = inside;
+           }

 
 

-         function zoomOutFurther(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomOutFurther();
+           points = result;
+           if (!points.length) break;

          }
 
          }
 

-         return function (selection) {
-           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function (d) {
-             if (d.disabled()) {
-               return d.disabledTitle;
-             }
+         return result;
+       } // intersect a segment against one of the 4 lines that make up the bbox

 
 

-             return d.title;
-           }).keys(function (d) {
-             return [d.key];
-           });
-           var lastPointerUpType;
-           var buttons = selection.selectAll('button').data(zooms).enter().append('button').attr('class', function (d) {
-             return d.id;
-           }).on('pointerup.editor', function (d3_event) {
-             lastPointerUpType = d3_event.pointerType;
-           }).on('click.editor', function (d3_event, d) {
-             if (!d.disabled()) {
-               d.action(d3_event);
-             } else if (lastPointerUpType === 'touch' || lastPointerUpType === 'pen') {
-               context.ui().flash.duration(2000).iconName('#' + d.icon).iconClass('disabled').label(d.disabledTitle)();
-             }
+       function intersect(a, b, edge, bbox) {
+         return edge & 8 ? [a[0] + (b[0] - a[0]) * (bbox[3] - a[1]) / (b[1] - a[1]), bbox[3]] // top
+         : edge & 4 ? [a[0] + (b[0] - a[0]) * (bbox[1] - a[1]) / (b[1] - a[1]), bbox[1]] // bottom
+         : edge & 2 ? [bbox[2], a[1] + (b[1] - a[1]) * (bbox[2] - a[0]) / (b[0] - a[0])] // right
+         : edge & 1 ? [bbox[0], a[1] + (b[1] - a[1]) * (bbox[0] - a[0]) / (b[0] - a[0])] // left
+         : null;
+       } // bit code reflects the point position relative to the bbox:
+       //         left  mid  right
+       //    top  1001  1000  1010
+       //    mid  0001  0000  0010
+       // bottom  0101  0100  0110

 
 

-             lastPointerUpType = null;
-           }).call(tooltipBehavior);
-           buttons.each(function (d) {
-             select(this).call(svgIcon('#' + d.icon, 'light'));
-           });
-           utilKeybinding.plusKeys.forEach(function (key) {
-             context.keybinding().on([key], zoomIn);
-             context.keybinding().on([uiCmd('⌥' + key)], zoomInFurther);
-           });
-           utilKeybinding.minusKeys.forEach(function (key) {
-             context.keybinding().on([key], zoomOut);
-             context.keybinding().on([uiCmd('⌥' + key)], zoomOutFurther);
-           });

 
 

-           function updateButtonStates() {
-             buttons.classed('disabled', function (d) {
-               return d.disabled();
-             }).each(function () {
-               var selection = select(this);
+       function bitCode(p, bbox) {
+         var code = 0;
+         if (p[0] < bbox[0]) code |= 1; // left
+         else if (p[0] > bbox[2]) code |= 2; // right

 
 

-               if (!selection.select('.tooltip.in').empty()) {
-                 selection.call(tooltipBehavior.updateContent);
-               }
-             });
-           }
+         if (p[1] < bbox[1]) code |= 4; // bottom
+         else if (p[1] > bbox[3]) code |= 8; // top

 
 

-           updateButtonStates();
-           context.map().on('move.uiZoom', updateButtonStates);
-         };
+         return code;

        }
 
        }
 

-       function uiZoomToSelection(context) {
-         function isDisabled() {
-           var mode = context.mode();
-           return !mode || !mode.zoomToSelected;
-         }
-
-         var _lastPointerUpType;
+       /**
+        * Takes a {@link Feature} and a bbox and clips the feature to the bbox using
+        * [lineclip](https://github.com/mapbox/lineclip).
+        * May result in degenerate edges when clipping Polygons.
+        *
+        * @name bboxClip
+        * @param {Feature<LineString|MultiLineString|Polygon|MultiPolygon>} feature feature to clip to the bbox
+        * @param {BBox} bbox extent in [minX, minY, maxX, maxY] order
+        * @returns {Feature<LineString|MultiLineString|Polygon|MultiPolygon>} clipped Feature
+        * @example
+        * var bbox = [0, 0, 10, 10];
+        * var poly = turf.polygon([[[2, 2], [8, 4], [12, 8], [3, 7], [2, 2]]]);
+        *
+        * var clipped = turf.bboxClip(poly, bbox);
+        *
+        * //addToMap
+        * var addToMap = [bbox, poly, clipped]
+        */

 
 

-         function pointerup(d3_event) {
-           _lastPointerUpType = d3_event.pointerType;
-         }
+       function bboxClip(feature, bbox) {
+         var geom = getGeom(feature);
+         var type = geom.type;
+         var properties = feature.type === "Feature" ? feature.properties : {};
+         var coords = geom.coordinates;

 
 

-         function click(d3_event) {
-           d3_event.preventDefault();
+         switch (type) {
+           case "LineString":
+           case "MultiLineString":
+             var lines_1 = [];

 
 

-           if (isDisabled()) {
-             if (_lastPointerUpType === 'touch' || _lastPointerUpType === 'pen') {
-               context.ui().flash.duration(2000).iconName('#iD-icon-framed-dot').iconClass('disabled').label(_t.html('inspector.zoom_to.no_selection'))();
+             if (type === "LineString") {
+               coords = [coords];

              }
              }

-           } else {
-             var mode = context.mode();

 
 

-             if (mode && mode.zoomToSelected) {
-               mode.zoomToSelected();
+             coords.forEach(function (line) {
+               lineclip(line, bbox, lines_1);
+             });
+
+             if (lines_1.length === 1) {
+               return lineString(lines_1[0], properties);

              }
              }

-           }

 
 

-           _lastPointerUpType = null;
+             return multiLineString(lines_1, properties);
+
+           case "Polygon":
+             return polygon(clipPolygon(coords, bbox), properties);
+
+           case "MultiPolygon":
+             return multiPolygon(coords.map(function (poly) {
+               return clipPolygon(poly, bbox);
+             }), properties);
+
+           default:
+             throw new Error("geometry " + type + " not supported");

          }
          }

+       }

 
 

-         return function (selection) {
-           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function () {
-             if (isDisabled()) {
-               return _t.html('inspector.zoom_to.no_selection');
-             }
+       function clipPolygon(rings, bbox) {
+         var outRings = [];

 
 

-             return _t.html('inspector.zoom_to.title');
-           }).keys([_t('inspector.zoom_to.key')]);
-           var button = selection.append('button').on('pointerup', pointerup).on('click', click).call(svgIcon('#iD-icon-framed-dot', 'light')).call(tooltipBehavior);
+         for (var _i = 0, rings_1 = rings; _i < rings_1.length; _i++) {
+           var ring = rings_1[_i];
+           var clipped = polygonclip(ring, bbox);

 
 

-           function setEnabledState() {
-             button.classed('disabled', isDisabled());
+           if (clipped.length > 0) {
+             if (clipped[0][0] !== clipped[clipped.length - 1][0] || clipped[0][1] !== clipped[clipped.length - 1][1]) {
+               clipped.push(clipped[0]);
+             }

 
 

-             if (!button.select('.tooltip.in').empty()) {
-               button.call(tooltipBehavior.updateContent);
+             if (clipped.length >= 4) {
+               outRings.push(clipped);

              }
            }
              }
            }

+         }

 
 

-           context.on('enter.uiZoomToSelection', setEnabledState);
-           setEnabledState();
-         };
+         return outRings;

        }
 
        }
 

-       function uiPane(id, context) {
-         var _key;
+       var tiler = utilTiler().tileSize(512).margin(1);
+       var dispatch = dispatch$8('loadedData');

 
 

-         var _label = '';
-         var _description = '';
-         var _iconName = '';
+       var _vtCache;

 
 

-         var _sections; // array of uiSection objects
+       function abortRequest(controller) {
+         controller.abort();
+       }

 
 

+       function vtToGeoJSON(data, tile, mergeCache) {
+         var vectorTile$1 = new vectorTile.VectorTile(new pbf(data));
+         var layers = Object.keys(vectorTile$1.layers);

 
 

-         var _paneSelection = select(null);
+         if (!Array.isArray(layers)) {
+           layers = [layers];
+         }

 
 

-         var _paneTooltip;
+         var features = [];
+         layers.forEach(function (layerID) {
+           var layer = vectorTile$1.layers[layerID];

 
 

-         var pane = {
-           id: id
-         };
+           if (layer) {
+             for (var i = 0; i < layer.length; i++) {
+               var feature = layer.feature(i).toGeoJSON(tile.xyz[0], tile.xyz[1], tile.xyz[2]);
+               var geometry = feature.geometry; // Treat all Polygons as MultiPolygons

 
 

-         pane.label = function (val) {
-           if (!arguments.length) return _label;
-           _label = val;
-           return pane;
-         };
+               if (geometry.type === 'Polygon') {
+                 geometry.type = 'MultiPolygon';
+                 geometry.coordinates = [geometry.coordinates];
+               }

 
 

-         pane.key = function (val) {
-           if (!arguments.length) return _key;
-           _key = val;
-           return pane;
-         };
+               var isClipped = false; // Clip to tile bounds

 
 

-         pane.description = function (val) {
-           if (!arguments.length) return _description;
-           _description = val;
-           return pane;
-         };
+               if (geometry.type === 'MultiPolygon') {
+                 var featureClip = bboxClip(feature, tile.extent.rectangle());

 
 

-         pane.iconName = function (val) {
-           if (!arguments.length) return _iconName;
-           _iconName = val;
-           return pane;
-         };
+                 if (!fastDeepEqual(feature.geometry, featureClip.geometry)) {
+                   // feature = featureClip;
+                   isClipped = true;
+                 }

 
 

-         pane.sections = function (val) {
-           if (!arguments.length) return _sections;
-           _sections = val;
-           return pane;
-         };
+                 if (!feature.geometry.coordinates.length) continue; // not actually on this tile

 
 

-         pane.selection = function () {
-           return _paneSelection;
-         };
+                 if (!feature.geometry.coordinates[0].length) continue; // not actually on this tile
+               } // Generate some unique IDs and add some metadata

 
 

-         function hidePane() {
-           context.ui().togglePanes();
-         }

 
 

-         pane.togglePane = function (d3_event) {
-           if (d3_event) d3_event.preventDefault();
+               var featurehash = utilHashcode(fastJsonStableStringify(feature));
+               var propertyhash = utilHashcode(fastJsonStableStringify(feature.properties || {}));
+               feature.__layerID__ = layerID.replace(/[^_a-zA-Z0-9\-]/g, '_');
+               feature.__featurehash__ = featurehash;
+               feature.__propertyhash__ = propertyhash;
+               features.push(feature); // Clipped Polygons at same zoom with identical properties can get merged

 
 

-           _paneTooltip.hide();
+               if (isClipped && geometry.type === 'MultiPolygon') {
+                 var merged = mergeCache[propertyhash];

 
 

-           context.ui().togglePanes(!_paneSelection.classed('shown') ? _paneSelection : undefined);
-         };
+                 if (merged && merged.length) {
+                   var other = merged[0];
+                   var coords = index.union(feature.geometry.coordinates, other.geometry.coordinates);

 
 

-         pane.renderToggleButton = function (selection) {
-           if (!_paneTooltip) {
-             _paneTooltip = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(_description).keys([_key]);
-           }
+                   if (!coords || !coords.length) {
+                     continue; // something failed in polygon union
+                   }

 
 

-           selection.append('button').on('click', pane.togglePane).call(svgIcon('#' + _iconName, 'light')).call(_paneTooltip);
-         };
+                   merged.push(feature);

 
 

-         pane.renderContent = function (selection) {
-           // override to fully customize content
-           if (_sections) {
-             _sections.forEach(function (section) {
-               selection.call(section.render);
-             });
-           }
-         };
+                   for (var j = 0; j < merged.length; j++) {
+                     // all these features get...
+                     merged[j].geometry.coordinates = coords; // same coords

 
 

-         pane.renderPane = function (selection) {
-           _paneSelection = selection.append('div').attr('class', 'fillL map-pane hide ' + id + '-pane').attr('pane', id);
+                     merged[j].__featurehash__ = featurehash; // same hash, so deduplication works
+                   }
+                 } else {
+                   mergeCache[propertyhash] = [feature];
+                 }
+               }
+             }
+           }
+         });
+         return features;
+       }

 
 

-           var heading = _paneSelection.append('div').attr('class', 'pane-heading');
+       function loadTile(source, tile) {
+         if (source.loaded[tile.id] || source.inflight[tile.id]) return;
+         var url = source.template.replace('{x}', tile.xyz[0]).replace('{y}', tile.xyz[1]) // TMS-flipped y coordinate
+         .replace(/\{[t-]y\}/, Math.pow(2, tile.xyz[2]) - tile.xyz[1] - 1).replace(/\{z(oom)?\}/, tile.xyz[2]).replace(/\{switch:([^}]+)\}/, function (s, r) {
+           var subdomains = r.split(',');
+           return subdomains[(tile.xyz[0] + tile.xyz[1]) % subdomains.length];
+         });
+         var controller = new AbortController();
+         source.inflight[tile.id] = controller;
+         fetch(url, {
+           signal: controller.signal
+         }).then(function (response) {
+           if (!response.ok) {
+             throw new Error(response.status + ' ' + response.statusText);
+           }

 
 

-           heading.append('h2').html(_label);
-           heading.append('button').on('click', hidePane).call(svgIcon('#iD-icon-close'));
+           source.loaded[tile.id] = [];
+           delete source.inflight[tile.id];
+           return response.arrayBuffer();
+         }).then(function (data) {
+           if (!data) {
+             throw new Error('No Data');
+           }

 
 

-           _paneSelection.append('div').attr('class', 'pane-content').call(pane.renderContent);
+           var z = tile.xyz[2];

 
 

-           if (_key) {
-             context.keybinding().on(_key, pane.togglePane);
+           if (!source.canMerge[z]) {
+             source.canMerge[z] = {}; // initialize mergeCache

            }
            }

-         };

 
 

-         return pane;
+           source.loaded[tile.id] = vtToGeoJSON(data, tile, source.canMerge[z]);
+           dispatch.call('loadedData');
+         })["catch"](function () {
+           source.loaded[tile.id] = [];
+           delete source.inflight[tile.id];
+         });

        }
 
        }
 

-       function uiSectionBackgroundDisplayOptions(context) {
-         var section = uiSection('background-display-options', context).label(_t.html('background.display_options')).disclosureContent(renderDisclosureContent);
-
-         var _detected = utilDetect();
+       var serviceVectorTile = {
+         init: function init() {
+           if (!_vtCache) {
+             this.reset();
+           }

 
 

-         var _storedOpacity = corePreferences('background-opacity');
+           this.event = utilRebind(this, dispatch, 'on');
+         },
+         reset: function reset() {
+           for (var sourceID in _vtCache) {
+             var source = _vtCache[sourceID];

 
 

-         var _minVal = 0;
+             if (source && source.inflight) {
+               Object.values(source.inflight).forEach(abortRequest);
+             }
+           }

 
 

-         var _maxVal = _detected.cssfilters ? 3 : 1;
+           _vtCache = {};
+         },
+         addSource: function addSource(sourceID, template) {
+           _vtCache[sourceID] = {
+             template: template,
+             inflight: {},
+             loaded: {},
+             canMerge: {}
+           };
+           return _vtCache[sourceID];
+         },
+         data: function data(sourceID, projection) {
+           var source = _vtCache[sourceID];
+           if (!source) return [];
+           var tiles = tiler.getTiles(projection);
+           var seen = {};
+           var results = [];

 
 

-         var _sliders = _detected.cssfilters ? ['brightness', 'contrast', 'saturation', 'sharpness'] : ['brightness'];
+           for (var i = 0; i < tiles.length; i++) {
+             var features = source.loaded[tiles[i].id];
+             if (!features || !features.length) continue;

 
 

-         var _options = {
-           brightness: _storedOpacity !== null ? +_storedOpacity : 1,
-           contrast: 1,
-           saturation: 1,
-           sharpness: 1
-         };
+             for (var j = 0; j < features.length; j++) {
+               var feature = features[j];
+               var hash = feature.__featurehash__;
+               if (seen[hash]) continue;
+               seen[hash] = true; // return a shallow copy, because the hash may change
+               // later if this feature gets merged with another

 
 

-         function clamp(x, min, max) {
-           return Math.max(min, Math.min(x, max));
-         }
+               results.push(Object.assign({}, feature)); // shallow copy
+             }
+           }

 
 

-         function updateValue(d, val) {
-           val = clamp(val, _minVal, _maxVal);
-           _options[d] = val;
-           context.background()[d](val);
+           return results;
+         },
+         loadTiles: function loadTiles(sourceID, template, projection) {
+           var source = _vtCache[sourceID];

 
 

-           if (d === 'brightness') {
-             corePreferences('background-opacity', val);
+           if (!source) {
+             source = this.addSource(sourceID, template);

            }
 
            }
 

-           section.reRender();
-         }
+           var tiles = tiler.getTiles(projection); // abort inflight requests that are no longer needed

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.display-options-container').data([0]);
-           var containerEnter = container.enter().append('div').attr('class', 'display-options-container controls-list'); // add slider controls
+           Object.keys(source.inflight).forEach(function (k) {
+             var wanted = tiles.find(function (tile) {
+               return k === tile.id;
+             });

 
 

-           var slidersEnter = containerEnter.selectAll('.display-control').data(_sliders).enter().append('div').attr('class', function (d) {
-             return 'display-control display-control-' + d;
+             if (!wanted) {
+               abortRequest(source.inflight[k]);
+               delete source.inflight[k];
+             }

            });
            });

-           slidersEnter.append('h5').html(function (d) {
-             return _t.html('background.' + d);
-           }).append('span').attr('class', function (d) {
-             return 'display-option-value display-option-value-' + d;
+           tiles.forEach(function (tile) {
+             loadTile(source, tile);

            });
            });

-           var sildersControlEnter = slidersEnter.append('div').attr('class', 'control-wrap');
-           sildersControlEnter.append('input').attr('class', function (d) {
-             return 'display-option-input display-option-input-' + d;
-           }).attr('type', 'range').attr('min', _minVal).attr('max', _maxVal).attr('step', '0.05').on('input', function (d3_event, d) {
-             var val = select(this).property('value');
+         },
+         cache: function cache() {
+           return _vtCache;
+         }
+       };

 
 

-             if (!val && d3_event && d3_event.target) {
-               val = d3_event.target.value;
-             }
+       var apibase = 'https://www.wikidata.org/w/api.php?';
+       var _wikidataCache = {};
+       var serviceWikidata = {
+         init: function init() {},
+         reset: function reset() {
+           _wikidataCache = {};
+         },
+         // Search for Wikidata items matching the query
+         itemsForSearchQuery: function itemsForSearchQuery(query, callback) {
+           if (!query) {
+             if (callback) callback('No query', {});
+             return;
+           }

 
 

-             updateValue(d, val);
+           var lang = this.languagesToQuery()[0];
+           var url = apibase + utilQsString({
+             action: 'wbsearchentities',
+             format: 'json',
+             formatversion: 2,
+             search: query,
+             type: 'item',
+             // the language to search
+             language: lang,
+             // the language for the label and description in the result
+             uselang: lang,
+             limit: 10,
+             origin: '*'

            });
            });

-           sildersControlEnter.append('button').attr('title', _t('background.reset')).attr('class', function (d) {
-             return 'display-option-reset display-option-reset-' + d;
-           }).on('click', function (d3_event, d) {
-             if (d3_event.button !== 0) return;
-             updateValue(d, 1);
-           }).call(svgIcon('#iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo'))); // reset all button
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);
+             }

 
 

-           containerEnter.append('a').attr('class', 'display-option-resetlink').attr('href', '#').html(_t.html('background.reset_all')).on('click', function (d3_event) {
-             d3_event.preventDefault();
+             if (callback) callback(null, result.search || {});
+           })["catch"](function (err) {
+             if (callback) callback(err.message, {});
+           });
+         },
+         // Given a Wikipedia language and article title,
+         // return an array of corresponding Wikidata entities.
+         itemsByTitle: function itemsByTitle(lang, title, callback) {
+           if (!title) {
+             if (callback) callback('No title', {});
+             return;
+           }

 
 

-             for (var i = 0; i < _sliders.length; i++) {
-               updateValue(_sliders[i], 1);
+           lang = lang || 'en';
+           var url = apibase + utilQsString({
+             action: 'wbgetentities',
+             format: 'json',
+             formatversion: 2,
+             sites: lang.replace(/-/g, '_') + 'wiki',
+             titles: title,
+             languages: 'en',
+             // shrink response by filtering to one language
+             origin: '*'
+           });
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);

              }
              }

-           }); // update

 
 

-           container = containerEnter.merge(container);
-           container.selectAll('.display-option-input').property('value', function (d) {
-             return _options[d];
+             if (callback) callback(null, result.entities || {});
+           })["catch"](function (err) {
+             if (callback) callback(err.message, {});

            });
            });

-           container.selectAll('.display-option-value').html(function (d) {
-             return Math.floor(_options[d] * 100) + '%';
+         },
+         languagesToQuery: function languagesToQuery() {
+           return _mainLocalizer.localeCodes().map(function (code) {
+             return code.toLowerCase();
+           }).filter(function (code) {
+             // HACK: en-us isn't a wikidata language. We should really be filtering by
+             // the languages known to be supported by wikidata.
+             return code !== 'en-us';

            });
            });

-           container.selectAll('.display-option-reset').classed('disabled', function (d) {
-             return _options[d] === 1;
-           }); // first time only, set brightness if needed
-
-           if (containerEnter.size() && _options.brightness !== 1) {
-             context.background().brightness(_options.brightness);
+         },
+         entityByQID: function entityByQID(qid, callback) {
+           if (!qid) {
+             callback('No qid', {});
+             return;

            }
            }

-         }
-
-         return section;
-       }
-
-       function uiSettingsCustomBackground() {
-         var dispatch$1 = dispatch('change');
-
-         function render(selection) {
-           // keep separate copies of original and current settings
-           var _origSettings = {
-             template: corePreferences('background-custom-template')
-           };
-           var _currSettings = {
-             template: corePreferences('background-custom-template')
-           };
-           var example = 'https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png';
-           var modal = uiConfirm(selection).okButton();
-           modal.classed('settings-modal settings-custom-background', true);
-           modal.select('.modal-section.header').append('h3').html(_t.html('settings.custom_background.header'));
-           var textSection = modal.select('.modal-section.message-text');
-           var instructions = "".concat(_t.html('settings.custom_background.instructions.info'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.wms.tokens_label'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.proj'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.wkid'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.dimensions'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.wms.tokens.bbox'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.tms.tokens_label'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.xyz'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.flipped_y'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.switch'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.quadtile'), "\n") + "* ".concat(_t.html('settings.custom_background.instructions.tms.tokens.scale_factor'), "\n") + '\n' + "#### ".concat(_t.html('settings.custom_background.instructions.example'), "\n") + "`".concat(example, "`");
-           textSection.append('div').attr('class', 'instructions-template').html(marked_1(instructions));
-           textSection.append('textarea').attr('class', 'field-template').attr('placeholder', _t('settings.custom_background.template.placeholder')).call(utilNoAuto).property('value', _currSettings.template); // insert a cancel button

 
 

-           var buttonSection = modal.select('.modal-section.buttons');
-           buttonSection.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
-           buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
-           buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);
-
-           function isSaveDisabled() {
-             return null;
-           } // restore the original template
+           if (_wikidataCache[qid]) {
+             if (callback) callback(null, _wikidataCache[qid]);
+             return;
+           }

 
 

+           var langs = this.languagesToQuery();
+           var url = apibase + utilQsString({
+             action: 'wbgetentities',
+             format: 'json',
+             formatversion: 2,
+             ids: qid,
+             props: 'labels|descriptions|claims|sitelinks',
+             sitefilter: langs.map(function (d) {
+               return d + 'wiki';
+             }).join('|'),
+             languages: langs.join('|'),
+             languagefallback: 1,
+             origin: '*'
+           });
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);
+             }

 
 

-           function clickCancel() {
-             textSection.select('.field-template').property('value', _origSettings.template);
-             corePreferences('background-custom-template', _origSettings.template);
-             this.blur();
-             modal.close();
-           } // accept the current template
+             if (callback) callback(null, result.entities[qid] || {});
+           })["catch"](function (err) {
+             if (callback) callback(err.message, {});
+           });
+         },
+         // Pass `params` object of the form:
+         // {
+         //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
+         // }
+         //
+         // Get an result object used to display tag documentation
+         // {
+         //   title:        'string',
+         //   description:  'string',
+         //   editURL:      'string',
+         //   imageURL:     'string',
+         //   wiki:         { title: 'string', text: 'string', url: 'string' }
+         // }
+         //
+         getDocs: function getDocs(params, callback) {
+           var langs = this.languagesToQuery();
+           this.entityByQID(params.qid, function (err, entity) {
+             if (err || !entity) {
+               callback(err || 'No entity');
+               return;
+             }

 
 

+             var i;
+             var description;

 
 

-           function clickSave() {
-             _currSettings.template = textSection.select('.field-template').property('value');
-             corePreferences('background-custom-template', _currSettings.template);
-             this.blur();
-             modal.close();
-             dispatch$1.call('change', this, _currSettings);
-           }
-         }
+             for (i in langs) {
+               var code = langs[i];

 
 

-         return utilRebind(render, dispatch$1, 'on');
-       }
+               if (entity.descriptions[code] && entity.descriptions[code].language === code) {
+                 description = entity.descriptions[code];
+                 break;
+               }
+             }

 
 

-       function uiSectionBackgroundList(context) {
-         var _backgroundList = select(null);
+             if (!description && Object.values(entity.descriptions).length) description = Object.values(entity.descriptions)[0]; // prepare result

 
 

-         var _customSource = context.background().findSource('custom');
+             var result = {
+               title: entity.id,
+               description: description ? description.value : '',
+               descriptionLocaleCode: description ? description.language : '',
+               editURL: 'https://www.wikidata.org/wiki/' + entity.id
+             }; // add image

 
 

-         var _settingsCustomBackground = uiSettingsCustomBackground().on('change', customChanged);
+             if (entity.claims) {
+               var imageroot = 'https://commons.wikimedia.org/w/index.php';
+               var props = ['P154', 'P18']; // logo image, image

 
 

-         var section = uiSection('background-list', context).label(_t.html('background.backgrounds')).disclosureContent(renderDisclosureContent);
+               var prop, image;

 
 

-         function previousBackgroundID() {
-           return corePreferences('background-last-used-toggle');
-         }
+               for (i = 0; i < props.length; i++) {
+                 prop = entity.claims[props[i]];

 
 

-         function renderDisclosureContent(selection) {
-           // the background list
-           var container = selection.selectAll('.layer-background-list').data([0]);
-           _backgroundList = container.enter().append('ul').attr('class', 'layer-list layer-background-list').attr('dir', 'auto').merge(container); // add minimap toggle below list
+                 if (prop && Object.keys(prop).length > 0) {
+                   image = prop[Object.keys(prop)[0]].mainsnak.datavalue.value;

 
 

-           var bgExtrasListEnter = selection.selectAll('.bg-extras-list').data([0]).enter().append('ul').attr('class', 'layer-list bg-extras-list');
-           var minimapLabelEnter = bgExtrasListEnter.append('li').attr('class', 'minimap-toggle-item').append('label').call(uiTooltip().title(_t.html('background.minimap.tooltip')).keys([_t('background.minimap.key')]).placement('top'));
-           minimapLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             uiMapInMap.toggle();
-           });
-           minimapLabelEnter.append('span').html(_t.html('background.minimap.description'));
-           var panelLabelEnter = bgExtrasListEnter.append('li').attr('class', 'background-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('background.panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.background.key'))]).placement('top'));
-           panelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             context.ui().info.toggle('background');
-           });
-           panelLabelEnter.append('span').html(_t.html('background.panel.description'));
-           var locPanelLabelEnter = bgExtrasListEnter.append('li').attr('class', 'location-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('background.location_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.location.key'))]).placement('top'));
-           locPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             context.ui().info.toggle('location');
-           });
-           locPanelLabelEnter.append('span').html(_t.html('background.location_panel.description')); // "Info / Report a Problem" link
+                   if (image) {
+                     result.imageURL = imageroot + '?' + utilQsString({
+                       title: 'Special:Redirect/file/' + image,
+                       width: 400
+                     });
+                     break;
+                   }
+                 }
+               }
+             }

 
 

-           selection.selectAll('.imagery-faq').data([0]).enter().append('div').attr('class', 'imagery-faq').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/openstreetmap/iD/blob/develop/FAQ.md#how-can-i-report-an-issue-with-background-imagery').append('span').html(_t.html('background.imagery_problem_faq'));
+             if (entity.sitelinks) {
+               var englishLocale = _mainLocalizer.languageCode().toLowerCase() === 'en'; // must be one of these that we requested..

 
 

-           _backgroundList.call(drawListItems, 'radio', function (d3_event, d) {
-             chooseBackground(d);
-           }, function (d) {
-             return !d.isHidden() && !d.overlay;
-           });
-         }
+               for (i = 0; i < langs.length; i++) {
+                 // check each, in order of preference
+                 var w = langs[i] + 'wiki';

 
 

-         function setTooltips(selection) {
-           selection.each(function (d, i, nodes) {
-             var item = select(this).select('label');
-             var span = item.select('span');
-             var placement = i < nodes.length / 2 ? 'bottom' : 'top';
-             var description = d.description();
-             var isOverflowing = span.property('clientWidth') !== span.property('scrollWidth');
-             item.call(uiTooltip().destroyAny);
+                 if (entity.sitelinks[w]) {
+                   var title = entity.sitelinks[w].title;
+                   var tKey = 'inspector.wiki_reference';

 
 

-             if (d.id === previousBackgroundID()) {
-               item.call(uiTooltip().placement(placement).title('<div>' + _t.html('background.switch') + '</div>').keys([uiCmd('⌘' + _t('background.key'))]));
-             } else if (description || isOverflowing) {
-               item.call(uiTooltip().placement(placement).title(description || d.label()));
-             }
-           });
-         }
+                   if (!englishLocale && langs[i] === 'en') {
+                     // user's locale isn't English but
+                     tKey = 'inspector.wiki_en_reference'; // we are sending them to enwiki anyway..
+                   }

 
 

-         function drawListItems(layerList, type, change, filter) {
-           var sources = context.background().sources(context.map().extent(), context.map().zoom(), true).filter(filter).sort(function (a, b) {
-             return a.best() && !b.best() ? -1 : b.best() && !a.best() ? 1 : d3_descending(a.area(), b.area()) || d3_ascending(a.name(), b.name()) || 0;
-           });
-           var layerLinks = layerList.selectAll('li') // We have to be a bit inefficient about reordering the list since
-           // arrow key navigation of radio values likes to work in the order
-           // they were added, not the display document order.
-           .data(sources, function (d, i) {
-             return d.id + '---' + i;
-           });
-           layerLinks.exit().remove();
-           var enter = layerLinks.enter().append('li').classed('layer-custom', function (d) {
-             return d.id === 'custom';
-           }).classed('best', function (d) {
-             return d.best();
-           });
-           var label = enter.append('label');
-           label.append('input').attr('type', type).attr('name', 'background-layer').attr('value', function (d) {
-             return d.id;
-           }).on('change', change);
-           label.append('span').html(function (d) {
-             return d.label();
+                   result.wiki = {
+                     title: title,
+                     text: tKey,
+                     url: 'https://' + langs[i] + '.wikipedia.org/wiki/' + title.replace(/ /g, '_')
+                   };
+                   break;
+                 }
+               }
+             }
+
+             callback(null, result);

            });
            });

-           enter.filter(function (d) {
-             return d.id === 'custom';
-           }).append('button').attr('class', 'layer-browse').call(uiTooltip().title(_t.html('settings.custom_background.tooltip')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', editCustom).call(svgIcon('#iD-icon-more'));
-           enter.filter(function (d) {
-             return d.best();
-           }).append('div').attr('class', 'best').call(uiTooltip().title(_t.html('background.best_imagery')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).append('span').html('&#9733;');
-           layerList.call(updateLayerSelections);

          }
          }

+       };

 
 

-         function updateLayerSelections(selection) {
-           function active(d) {
-             return context.background().showsLayer(d);
+       var endpoint = 'https://en.wikipedia.org/w/api.php?';
+       var serviceWikipedia = {
+         init: function init() {},
+         reset: function reset() {},
+         search: function search(lang, query, callback) {
+           if (!query) {
+             if (callback) callback('No Query', []);
+             return;

            }
 
            }
 

-           selection.selectAll('li').classed('active', active).classed('switch', function (d) {
-             return d.id === previousBackgroundID();
-           }).call(setTooltips).selectAll('input').property('checked', active);
-         }
+           lang = lang || 'en';
+           var url = endpoint.replace('en', lang) + utilQsString({
+             action: 'query',
+             list: 'search',
+             srlimit: '10',
+             srinfo: 'suggestion',
+             format: 'json',
+             origin: '*',
+             srsearch: query
+           });
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);
+             } else if (!result || !result.query || !result.query.search) {
+               throw new Error('No Results');
+             }

 
 

-         function chooseBackground(d) {
-           if (d.id === 'custom' && !d.template()) {
-             return editCustom();
+             if (callback) {
+               var titles = result.query.search.map(function (d) {
+                 return d.title;
+               });
+               callback(null, titles);
+             }
+           })["catch"](function (err) {
+             if (callback) callback(err, []);
+           });
+         },
+         suggestions: function suggestions(lang, query, callback) {
+           if (!query) {
+             if (callback) callback('', []);
+             return;

            }
 
            }
 

-           var previousBackground = context.background().baseLayerSource();
-           corePreferences('background-last-used-toggle', previousBackground.id);
-           corePreferences('background-last-used', d.id);
-           context.background().baseLayerSource(d);
-         }
+           lang = lang || 'en';
+           var url = endpoint.replace('en', lang) + utilQsString({
+             action: 'opensearch',
+             namespace: 0,
+             suggest: '',
+             format: 'json',
+             origin: '*',
+             search: query
+           });
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);
+             } else if (!result || result.length < 2) {
+               throw new Error('No Results');
+             }

 
 

-         function customChanged(d) {
-           if (d && d.template) {
-             _customSource.template(d.template);
+             if (callback) callback(null, result[1] || []);
+           })["catch"](function (err) {
+             if (callback) callback(err.message, []);
+           });
+         },
+         translations: function translations(lang, title, callback) {
+           if (!title) {
+             if (callback) callback('No Title');
+             return;
+           }

 
 

-             chooseBackground(_customSource);
-           } else {
-             _customSource.template('');
+           var url = endpoint.replace('en', lang) + utilQsString({
+             action: 'query',
+             prop: 'langlinks',
+             format: 'json',
+             origin: '*',
+             lllimit: 500,
+             titles: title
+           });
+           d3_json(url).then(function (result) {
+             if (result && result.error) {
+               throw new Error(result.error);
+             } else if (!result || !result.query || !result.query.pages) {
+               throw new Error('No Results');
+             }

 
 

-             chooseBackground(context.background().findSource('none'));
-           }
-         }
+             if (callback) {
+               var list = result.query.pages[Object.keys(result.query.pages)[0]];
+               var translations = {};

 
 

-         function editCustom(d3_event) {
-           d3_event.preventDefault();
-           context.container().call(_settingsCustomBackground);
+               if (list && list.langlinks) {
+                 list.langlinks.forEach(function (d) {
+                   translations[d.lang] = d['*'];
+                 });
+               }
+
+               callback(null, translations);
+             }
+           })["catch"](function (err) {
+             if (callback) callback(err.message);
+           });

          }
          }

+       };

 
 

-         context.background().on('change.background_list', function () {
-           _backgroundList.call(updateLayerSelections);
-         });
-         context.map().on('move.background_list', debounce(function () {
-           // layers in-view may have changed due to map move
-           window.requestIdleCallback(section.reRender);
-         }, 1000));
-         return section;
-       }
+       var services = {
+         geocoder: serviceNominatim,
+         keepRight: serviceKeepRight,
+         improveOSM: serviceImproveOSM,
+         osmose: serviceOsmose,
+         mapillary: serviceMapillary,
+         nsi: serviceNsi,
+         openstreetcam: serviceOpenstreetcam,
+         osm: serviceOsm,
+         osmWikibase: serviceOsmWikibase,
+         maprules: serviceMapRules,
+         streetside: serviceStreetside,
+         taginfo: serviceTaginfo,
+         vectorTile: serviceVectorTile,
+         wikidata: serviceWikidata,
+         wikipedia: serviceWikipedia
+       };

 
 

-       function uiSectionBackgroundOffset(context) {
-         var section = uiSection('background-offset', context).label(_t.html('background.fix_misalignment')).disclosureContent(renderDisclosureContent).expandedByDefault(false);
+       function modeDragNote(context) {
+         var mode = {
+           id: 'drag-note',
+           button: 'browse'
+         };
+         var edit = behaviorEdit(context);

 
 

-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+         var _nudgeInterval;

 
 

-         var _directions = [['top', [0, -0.5]], ['left', [-0.5, 0]], ['right', [0.5, 0]], ['bottom', [0, 0.5]]];
+         var _lastLoc;

 
 

-         function updateValue() {
-           var meters = geoOffsetToMeters(context.background().offset());
-           var x = +meters[0].toFixed(2);
-           var y = +meters[1].toFixed(2);
-           context.container().selectAll('.nudge-inner-rect').select('input').classed('error', false).property('value', x + ', ' + y);
-           context.container().selectAll('.nudge-reset').classed('disabled', function () {
-             return x === 0 && y === 0;
-           });
+         var _note; // most current note.. dragged note may have stale datum.
+
+
+         function startNudge(d3_event, nudge) {
+           if (_nudgeInterval) window.clearInterval(_nudgeInterval);
+           _nudgeInterval = window.setInterval(function () {
+             context.map().pan(nudge);
+             doMove(d3_event, nudge);
+           }, 50);

          }
 
          }
 

-         function resetOffset() {
-           context.background().offset([0, 0]);
-           updateValue();
+         function stopNudge() {
+           if (_nudgeInterval) {
+             window.clearInterval(_nudgeInterval);
+             _nudgeInterval = null;
+           }

          }
 
          }
 

-         function nudge(d) {
-           context.background().nudge(d, context.map().zoom());
-           updateValue();
+         function origin(note) {
+           return context.projection(note.loc);

          }
 
          }
 

-         function inputOffset() {
-           var input = select(this);
-           var d = input.node().value;
-           if (d === '') return resetOffset();
-           d = d.replace(/;/g, ',').split(',').map(function (n) {
-             // if n is NaN, it will always get mapped to false.
-             return !isNaN(n) && n;
-           });
+         function start(d3_event, note) {
+           _note = note;
+           var osm = services.osm;

 
 

-           if (d.length !== 2 || !d[0] || !d[1]) {
-             input.classed('error', true);
-             return;
+           if (osm) {
+             // Get latest note from cache.. The marker may have a stale datum bound to it
+             // and dragging it around can sometimes delete the users note comment.
+             _note = osm.getNote(_note.id);

            }
 
            }
 

-           context.background().offset(geoMetersToOffset(d));
-           updateValue();
+           context.surface().selectAll('.note-' + _note.id).classed('active', true);
+           context.perform(actionNoop());
+           context.enter(mode);
+           context.selectedNoteID(_note.id);

          }
 
          }
 

-         function dragOffset(d3_event) {
-           if (d3_event.button !== 0) return;
-           var origin = [d3_event.clientX, d3_event.clientY];
-           var pointerId = d3_event.pointerId || 'mouse';
-           context.container().append('div').attr('class', 'nudge-surface');
-           select(window).on(_pointerPrefix + 'move.drag-bg-offset', pointermove).on(_pointerPrefix + 'up.drag-bg-offset', pointerup);
+         function move(d3_event, entity, point) {
+           d3_event.stopPropagation();
+           _lastLoc = context.projection.invert(point);
+           doMove(d3_event);
+           var nudge = geoViewportEdge(point, context.map().dimensions());

 
 

-           if (_pointerPrefix === 'pointer') {
-             select(window).on('pointercancel.drag-bg-offset', pointerup);
+           if (nudge) {
+             startNudge(d3_event, nudge);
+           } else {
+             stopNudge();

            }
            }

+         }

 
 

-           function pointermove(d3_event) {
-             if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-             var latest = [d3_event.clientX, d3_event.clientY];
-             var d = [-(origin[0] - latest[0]) / 4, -(origin[1] - latest[1]) / 4];
-             origin = latest;
-             nudge(d);
-           }
+         function doMove(d3_event, nudge) {
+           nudge = nudge || [0, 0];
+           var currPoint = d3_event && d3_event.point || context.projection(_lastLoc);
+           var currMouse = geoVecSubtract(currPoint, nudge);
+           var loc = context.projection.invert(currMouse);
+           _note = _note.move(loc);
+           var osm = services.osm;

 
 

-           function pointerup(d3_event) {
-             if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-             if (d3_event.button !== 0) return;
-             context.container().selectAll('.nudge-surface').remove();
-             select(window).on('.drag-bg-offset', null);
+           if (osm) {
+             osm.replaceNote(_note); // update note cache

            }
            }

-         }

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.nudge-container').data([0]);
-           var containerEnter = container.enter().append('div').attr('class', 'nudge-container');
-           containerEnter.append('div').attr('class', 'nudge-instructions').html(_t.html('background.offset'));
-           var nudgeWrapEnter = containerEnter.append('div').attr('class', 'nudge-controls-wrap');
-           var nudgeEnter = nudgeWrapEnter.append('div').attr('class', 'nudge-outer-rect').on(_pointerPrefix + 'down', dragOffset);
-           nudgeEnter.append('div').attr('class', 'nudge-inner-rect').append('input').attr('type', 'text').on('change', inputOffset);
-           nudgeWrapEnter.append('div').selectAll('button').data(_directions).enter().append('button').attr('class', function (d) {
-             return d[0] + ' nudge';
-           }).on('click', function (d3_event, d) {
-             nudge(d[1]);
-           });
-           nudgeWrapEnter.append('button').attr('title', _t('background.reset')).attr('class', 'nudge-reset disabled').on('click', function (d3_event) {
-             d3_event.preventDefault();
-             resetOffset();
-           }).call(svgIcon('#iD-icon-' + (_mainLocalizer.textDirection() === 'rtl' ? 'redo' : 'undo')));
-           updateValue();
+           context.replace(actionNoop()); // trigger redraw

          }
 
          }
 

-         context.background().on('change.backgroundOffset-update', updateValue);
-         return section;
-       }
-
-       function uiSectionOverlayList(context) {
-         var section = uiSection('overlay-list', context).label(_t.html('background.overlays')).disclosureContent(renderDisclosureContent);
-
-         var _overlayList = select(null);
-
-         function setTooltips(selection) {
-           selection.each(function (d, i, nodes) {
-             var item = select(this).select('label');
-             var span = item.select('span');
-             var placement = i < nodes.length / 2 ? 'bottom' : 'top';
-             var description = d.description();
-             var isOverflowing = span.property('clientWidth') !== span.property('scrollWidth');
-             item.call(uiTooltip().destroyAny);
+         function end() {
+           context.replace(actionNoop()); // trigger redraw

 
 

-             if (description || isOverflowing) {
-               item.call(uiTooltip().placement(placement).title(description || d.name()));
-             }
-           });
+           context.selectedNoteID(_note.id).enter(modeSelectNote(context, _note.id));

          }
 
          }
 

-         function updateLayerSelections(selection) {
-           function active(d) {
-             return context.background().showsLayer(d);
-           }
+         var drag = behaviorDrag().selector('.layer-touch.markers .target.note.new').surface(context.container().select('.main-map').node()).origin(origin).on('start', start).on('move', move).on('end', end);

 
 

-           selection.selectAll('li').classed('active', active).call(setTooltips).selectAll('input').property('checked', active);
-         }
+         mode.enter = function () {
+           context.install(edit);
+         };

 
 

-         function chooseOverlay(d3_event, d) {
-           d3_event.preventDefault();
-           context.background().toggleOverlayLayer(d);
+         mode.exit = function () {
+           context.ui().sidebar.hover.cancel();
+           context.uninstall(edit);
+           context.surface().selectAll('.active').classed('active', false);
+           stopNudge();
+         };

 
 

-           _overlayList.call(updateLayerSelections);
+         mode.behavior = drag;
+         return mode;
+       }

 
 

-           document.activeElement.blur();
-         }
+       function modeSelectData(context, selectedDatum) {
+         var mode = {
+           id: 'select-data',
+           button: 'browse'
+         };
+         var keybinding = utilKeybinding('select-data');
+         var dataEditor = uiDataEditor(context);
+         var behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior]; // class the data as selected, or return to browse mode if the data is gone

 
 

-         function drawListItems(layerList, type, change, filter) {
-           var sources = context.background().sources(context.map().extent(), context.map().zoom(), true).filter(filter);
-           var layerLinks = layerList.selectAll('li').data(sources, function (d) {
-             return d.name();
-           });
-           layerLinks.exit().remove();
-           var enter = layerLinks.enter().append('li');
-           var label = enter.append('label');
-           label.append('input').attr('type', type).attr('name', 'layers').on('change', change);
-           label.append('span').html(function (d) {
-             return d.label();
-           });
-           layerList.selectAll('li').sort(sortSources);
-           layerList.call(updateLayerSelections);
+         function selectData(d3_event, drawn) {
+           var selection = context.surface().selectAll('.layer-mapdata .data' + selectedDatum.__featurehash__);

 
 

-           function sortSources(a, b) {
-             return a.best() && !b.best() ? -1 : b.best() && !a.best() ? 1 : d3_descending(a.area(), b.area()) || d3_ascending(a.name(), b.name()) || 0;
+           if (selection.empty()) {
+             // Return to browse mode if selected DOM elements have
+             // disappeared because the user moved them out of view..
+             var source = d3_event && d3_event.type === 'zoom' && d3_event.sourceEvent;
+
+             if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
+               context.enter(modeBrowse(context));
+             }
+           } else {
+             selection.classed('selected', true);

            }
          }
 
            }
          }
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.layer-overlay-list').data([0]);
-           _overlayList = container.enter().append('ul').attr('class', 'layer-list layer-overlay-list').attr('dir', 'auto').merge(container);
-
-           _overlayList.call(drawListItems, 'checkbox', chooseOverlay, function (d) {
-             return !d.isHidden() && d.overlay;
-           });
+         function esc() {
+           if (context.container().select('.combobox').size()) return;
+           context.enter(modeBrowse(context));

          }
 
          }
 

-         context.map().on('move.overlay_list', debounce(function () {
-           // layers in-view may have changed due to map move
-           window.requestIdleCallback(section.reRender);
-         }, 1000));
-         return section;
-       }
-
-       function uiPaneBackground(context) {
-         var backgroundPane = uiPane('background', context).key(_t('background.key')).label(_t.html('background.title')).description(_t.html('background.description')).iconName('iD-icon-layers').sections([uiSectionBackgroundList(context), uiSectionOverlayList(context), uiSectionBackgroundDisplayOptions(context), uiSectionBackgroundOffset(context)]);
-         return backgroundPane;
-       }
+         mode.zoomToSelected = function () {
+           var extent = geoExtent(d3_geoBounds(selectedDatum));
+           context.map().centerZoomEase(extent.center(), context.map().trimmedExtentZoom(extent));
+         };

 
 

-       function uiPaneHelp(context) {
-         var docKeys = [['help', ['welcome', 'open_data_h', 'open_data', 'before_start_h', 'before_start', 'open_source_h', 'open_source', 'open_source_help']], ['overview', ['navigation_h', 'navigation_drag', 'navigation_zoom', 'features_h', 'features', 'nodes_ways']], ['editing', ['select_h', 'select_left_click', 'select_right_click', 'select_space', 'multiselect_h', 'multiselect', 'multiselect_shift_click', 'multiselect_lasso', 'undo_redo_h', 'undo_redo', 'save_h', 'save', 'save_validation', 'upload_h', 'upload', 'backups_h', 'backups', 'keyboard_h', 'keyboard']], ['feature_editor', ['intro', 'definitions', 'type_h', 'type', 'type_picker', 'fields_h', 'fields_all_fields', 'fields_example', 'fields_add_field', 'tags_h', 'tags_all_tags', 'tags_resources']], ['points', ['intro', 'add_point_h', 'add_point', 'add_point_finish', 'move_point_h', 'move_point', 'delete_point_h', 'delete_point', 'delete_point_command']], ['lines', ['intro', 'add_line_h', 'add_line', 'add_line_draw', 'add_line_continue', 'add_line_finish', 'modify_line_h', 'modify_line_dragnode', 'modify_line_addnode', 'connect_line_h', 'connect_line', 'connect_line_display', 'connect_line_drag', 'connect_line_tag', 'disconnect_line_h', 'disconnect_line_command', 'move_line_h', 'move_line_command', 'move_line_connected', 'delete_line_h', 'delete_line', 'delete_line_command']], ['areas', ['intro', 'point_or_area_h', 'point_or_area', 'add_area_h', 'add_area_command', 'add_area_draw', 'add_area_continue', 'add_area_finish', 'square_area_h', 'square_area_command', 'modify_area_h', 'modify_area_dragnode', 'modify_area_addnode', 'delete_area_h', 'delete_area', 'delete_area_command']], ['relations', ['intro', 'edit_relation_h', 'edit_relation', 'edit_relation_add', 'edit_relation_delete', 'maintain_relation_h', 'maintain_relation', 'relation_types_h', 'multipolygon_h', 'multipolygon', 'multipolygon_create', 'multipolygon_merge', 'turn_restriction_h', 'turn_restriction', 'turn_restriction_field', 'turn_restriction_editing', 'route_h', 'route', 'route_add', 'boundary_h', 'boundary', 'boundary_add']], ['operations', ['intro', 'intro_2', 'straighten', 'orthogonalize', 'circularize', 'move', 'rotate', 'reflect', 'continue', 'reverse', 'disconnect', 'split', 'extract', 'merge', 'delete', 'downgrade', 'copy_paste']], ['notes', ['intro', 'add_note_h', 'add_note', 'place_note', 'move_note', 'update_note_h', 'update_note', 'save_note_h', 'save_note']], ['imagery', ['intro', 'sources_h', 'choosing', 'sources', 'offsets_h', 'offset', 'offset_change']], ['streetlevel', ['intro', 'using_h', 'using', 'photos', 'viewer']], ['gps', ['intro', 'survey', 'using_h', 'using', 'tracing', 'upload']], ['qa', ['intro', 'tools_h', 'tools', 'issues_h', 'issues']]];
-         var headings = {
-           'help.help.open_data_h': 3,
-           'help.help.before_start_h': 3,
-           'help.help.open_source_h': 3,
-           'help.overview.navigation_h': 3,
-           'help.overview.features_h': 3,
-           'help.editing.select_h': 3,
-           'help.editing.multiselect_h': 3,
-           'help.editing.undo_redo_h': 3,
-           'help.editing.save_h': 3,
-           'help.editing.upload_h': 3,
-           'help.editing.backups_h': 3,
-           'help.editing.keyboard_h': 3,
-           'help.feature_editor.type_h': 3,
-           'help.feature_editor.fields_h': 3,
-           'help.feature_editor.tags_h': 3,
-           'help.points.add_point_h': 3,
-           'help.points.move_point_h': 3,
-           'help.points.delete_point_h': 3,
-           'help.lines.add_line_h': 3,
-           'help.lines.modify_line_h': 3,
-           'help.lines.connect_line_h': 3,
-           'help.lines.disconnect_line_h': 3,
-           'help.lines.move_line_h': 3,
-           'help.lines.delete_line_h': 3,
-           'help.areas.point_or_area_h': 3,
-           'help.areas.add_area_h': 3,
-           'help.areas.square_area_h': 3,
-           'help.areas.modify_area_h': 3,
-           'help.areas.delete_area_h': 3,
-           'help.relations.edit_relation_h': 3,
-           'help.relations.maintain_relation_h': 3,
-           'help.relations.relation_types_h': 2,
-           'help.relations.multipolygon_h': 3,
-           'help.relations.turn_restriction_h': 3,
-           'help.relations.route_h': 3,
-           'help.relations.boundary_h': 3,
-           'help.notes.add_note_h': 3,
-           'help.notes.update_note_h': 3,
-           'help.notes.save_note_h': 3,
-           'help.imagery.sources_h': 3,
-           'help.imagery.offsets_h': 3,
-           'help.streetlevel.using_h': 3,
-           'help.gps.using_h': 3,
-           'help.qa.tools_h': 3,
-           'help.qa.issues_h': 3
-         }; // For each section, squash all the texts into a single markdown document
+         mode.enter = function () {
+           behaviors.forEach(context.install);
+           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
+           select(document).call(keybinding);
+           selectData();
+           var sidebar = context.ui().sidebar;
+           sidebar.show(dataEditor.datum(selectedDatum)); // expand the sidebar, avoid obscuring the data if needed

 
 

-         var docs = docKeys.map(function (key) {
-           var helpkey = 'help.' + key[0];
-           var helpPaneReplacements = {
-             version: context.version
-           };
-           var text = key[1].reduce(function (all, part) {
-             var subkey = helpkey + '.' + part;
-             var depth = headings[subkey]; // is this subkey a heading?
+           var extent = geoExtent(d3_geoBounds(selectedDatum));
+           sidebar.expand(sidebar.intersects(extent));
+           context.map().on('drawn.select-data', selectData);
+         };

 
 

-             var hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s
+         mode.exit = function () {
+           behaviors.forEach(context.uninstall);
+           select(document).call(keybinding.unbind);
+           context.surface().selectAll('.layer-mapdata .selected').classed('selected hover', false);
+           context.map().on('drawn.select-data', null);
+           context.ui().sidebar.hide();
+         };

 
 

-             return all + hhh + helpHtml(subkey, helpPaneReplacements) + '\n\n';
-           }, '');
-           return {
-             title: _t.html(helpkey + '.title'),
-             content: marked_1(text.trim()) // use keyboard key styling for shortcuts
-             .replace(/<code>/g, '<kbd>').replace(/<\/code>/g, '<\/kbd>')
-           };
-         });
-         var helpPane = uiPane('help', context).key(_t('help.key')).label(_t.html('help.title')).description(_t.html('help.title')).iconName('iD-icon-help');
+         return mode;
+       }

 
 

-         helpPane.renderContent = function (content) {
-           function clickHelp(d, i) {
-             var rtl = _mainLocalizer.textDirection() === 'rtl';
-             content.property('scrollTop', 0);
-             helpPane.selection().select('.pane-heading h2').html(d.title);
-             body.html(d.content);
-             body.selectAll('a').attr('target', '_blank');
-             menuItems.classed('selected', function (m) {
-               return m.title === d.title;
-             });
-             nav.html('');
+       function behaviorSelect(context) {
+         var _tolerancePx = 4; // see also behaviorDrag

 
 

-             if (rtl) {
-               nav.call(drawNext).call(drawPrevious);
-             } else {
-               nav.call(drawPrevious).call(drawNext);
-             }
+         var _lastMouseEvent = null;
+         var _showMenu = false;
+         var _downPointers = {};
+         var _longPressTimeout = null;
+         var _lastInteractionType = null; // the id of the down pointer that's enabling multiselection while down

 
 

-             function drawNext(selection) {
-               if (i < docs.length - 1) {
-                 var nextLink = selection.append('a').attr('href', '#').attr('class', 'next').on('click', function (d3_event) {
-                   d3_event.preventDefault();
-                   clickHelp(docs[i + 1], i + 1);
-                 });
-                 nextLink.append('span').html(docs[i + 1].title).call(svgIcon(rtl ? '#iD-icon-backward' : '#iD-icon-forward', 'inline'));
-               }
-             }
+         var _multiselectionPointerId = null; // use pointer events on supported platforms; fallback to mouse events

 
 

-             function drawPrevious(selection) {
-               if (i > 0) {
-                 var prevLink = selection.append('a').attr('href', '#').attr('class', 'previous').on('click', function (d3_event) {
-                   d3_event.preventDefault();
-                   clickHelp(docs[i - 1], i - 1);
-                 });
-                 prevLink.call(svgIcon(rtl ? '#iD-icon-forward' : '#iD-icon-backward', 'inline')).append('span').html(docs[i - 1].title);
-               }
-             }
-           }
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-           function clickWalkthrough(d3_event) {
-             d3_event.preventDefault();
-             if (context.inIntro()) return;
-             context.container().call(uiIntro(context));
-             context.ui().togglePanes();
+         function keydown(d3_event) {
+           if (d3_event.keyCode === 32) {
+             // don't react to spacebar events during text input
+             var activeNode = document.activeElement;
+             if (activeNode && new Set(['INPUT', 'TEXTAREA']).has(activeNode.nodeName)) return;

            }
 
            }
 

-           function clickShortcuts(d3_event) {
+           if (d3_event.keyCode === 93 || // context menu key
+           d3_event.keyCode === 32) {
+             // spacebar

              d3_event.preventDefault();
              d3_event.preventDefault();

-             context.container().call(context.ui().shortcuts, true);

            }
 
            }
 

-           var toc = content.append('ul').attr('class', 'toc');
-           var menuItems = toc.selectAll('li').data(docs).enter().append('li').append('a').attr('href', '#').html(function (d) {
-             return d.title;
-           }).on('click', function (d3_event, d) {
-             d3_event.preventDefault();
-             clickHelp(d, docs.indexOf(d));
-           });
-           var shortcuts = toc.append('li').attr('class', 'shortcuts').call(uiTooltip().title(_t.html('shortcuts.tooltip')).keys(['?']).placement('top')).append('a').attr('href', '#').on('click', clickShortcuts);
-           shortcuts.append('div').html(_t.html('shortcuts.title'));
-           var walkthrough = toc.append('li').attr('class', 'walkthrough').append('a').attr('href', '#').on('click', clickWalkthrough);
-           walkthrough.append('svg').attr('class', 'logo logo-walkthrough').append('use').attr('xlink:href', '#iD-logo-walkthrough');
-           walkthrough.append('div').html(_t.html('splash.walkthrough'));
-           var helpContent = content.append('div').attr('class', 'left-content');
-           var body = helpContent.append('div').attr('class', 'body');
-           var nav = helpContent.append('div').attr('class', 'nav');
-           clickHelp(docs[0], 0);
-         };
+           if (d3_event.repeat) return; // ignore repeated events for held keys
+           // if any key is pressed the user is probably doing something other than long-pressing

 
 

-         return helpPane;
-       }
+           cancelLongPress();

 
 

-       function uiSectionValidationIssues(id, severity, context) {
-         var _issues = [];
-         var section = uiSection(id, context).label(function () {
-           if (!_issues) return '';
-           var issueCountText = _issues.length > 1000 ? '1000+' : String(_issues.length);
-           return _t('inspector.title_count', {
-             title: _t.html('issues.' + severity + 's.list_title'),
-             count: issueCountText
-           });
-         }).disclosureContent(renderDisclosureContent).shouldDisplay(function () {
-           return _issues && _issues.length;
-         });
+           if (d3_event.shiftKey) {
+             context.surface().classed('behavior-multiselect', true);
+           }

 
 

-         function getOptions() {
-           return {
-             what: corePreferences('validate-what') || 'edited',
-             where: corePreferences('validate-where') || 'all'
-           };
-         } // get and cache the issues to display, unordered
+           if (d3_event.keyCode === 32) {
+             // spacebar
+             if (!_downPointers.spacebar && _lastMouseEvent) {
+               cancelLongPress();
+               _longPressTimeout = window.setTimeout(didLongPress, 500, 'spacebar', 'spacebar');
+               _downPointers.spacebar = {
+                 firstEvent: _lastMouseEvent,
+                 lastEvent: _lastMouseEvent
+               };
+             }
+           }
+         }

 
 

+         function keyup(d3_event) {
+           cancelLongPress();

 
 

-         function reloadIssues() {
-           _issues = context.validator().getIssuesBySeverity(getOptions())[severity];
+           if (!d3_event.shiftKey) {
+             context.surface().classed('behavior-multiselect', false);
+           }
+
+           if (d3_event.keyCode === 93) {
+             // context menu key
+             d3_event.preventDefault();
+             _lastInteractionType = 'menukey';
+             contextmenu(d3_event);
+           } else if (d3_event.keyCode === 32) {
+             // spacebar
+             var pointer = _downPointers.spacebar;
+
+             if (pointer) {
+               delete _downPointers.spacebar;
+               if (pointer.done) return;
+               d3_event.preventDefault();
+               _lastInteractionType = 'spacebar';
+               click(pointer.firstEvent, pointer.lastEvent, 'spacebar');
+             }
+           }

          }
 
          }
 

-         function renderDisclosureContent(selection) {
-           var center = context.map().center();
-           var graph = context.graph(); // sort issues by distance away from the center of the map
+         function pointerdown(d3_event) {
+           var id = (d3_event.pointerId || 'mouse').toString();
+           cancelLongPress();
+           if (d3_event.buttons && d3_event.buttons !== 1) return;
+           context.ui().closeEditMenu();
+           _longPressTimeout = window.setTimeout(didLongPress, 500, id, 'longdown-' + (d3_event.pointerType || 'mouse'));
+           _downPointers[id] = {
+             firstEvent: d3_event,
+             lastEvent: d3_event
+           };
+         }

 
 

-           var issues = _issues.map(function withDistance(issue) {
-             var extent = issue.extent(graph);
-             var dist = extent ? geoSphericalDistance(center, extent.center()) : 0;
-             return Object.assign(issue, {
-               dist: dist
-             });
-           }).sort(function byDistance(a, b) {
-             return a.dist - b.dist;
-           }); // cut off at 1000
+         function didLongPress(id, interactionType) {
+           var pointer = _downPointers[id];
+           if (!pointer) return;

 
 

+           for (var i in _downPointers) {
+             // don't allow this or any currently down pointer to trigger another click
+             _downPointers[i].done = true;
+           } // treat long presses like right-clicks

 
 

-           issues = issues.slice(0, 1000); //renderIgnoredIssuesReset(_warningsSelection);

 
 

-           selection.call(drawIssuesList, issues);
+           _longPressTimeout = null;
+           _lastInteractionType = interactionType;
+           _showMenu = true;
+           click(pointer.firstEvent, pointer.lastEvent, id);

          }
 
          }
 

-         function drawIssuesList(selection, issues) {
-           var list = selection.selectAll('.issues-list').data([0]);
-           list = list.enter().append('ul').attr('class', 'layer-list issues-list ' + severity + 's-list').merge(list);
-           var items = list.selectAll('li').data(issues, function (d) {
-             return d.id;
-           }); // Exit
+         function pointermove(d3_event) {
+           var id = (d3_event.pointerId || 'mouse').toString();

 
 

-           items.exit().remove(); // Enter
+           if (_downPointers[id]) {
+             _downPointers[id].lastEvent = d3_event;
+           }

 
 

-           var itemsEnter = items.enter().append('li').attr('class', function (d) {
-             return 'issue severity-' + d.severity;
-           }).on('click', function (d3_event, d) {
-             context.validator().focusIssue(d);
-           }).on('mouseover', function (d3_event, d) {
-             utilHighlightEntities(d.entityIds, true, context);
-           }).on('mouseout', function (d3_event, d) {
-             utilHighlightEntities(d.entityIds, false, context);
-           });
-           var labelsEnter = itemsEnter.append('div').attr('class', 'issue-label');
-           var textEnter = labelsEnter.append('span').attr('class', 'issue-text');
-           textEnter.append('span').attr('class', 'issue-icon').each(function (d) {
-             var iconName = '#iD-icon-' + (d.severity === 'warning' ? 'alert' : 'error');
-             select(this).call(svgIcon(iconName));
-           });
-           textEnter.append('span').attr('class', 'issue-message');
-           /*
-           labelsEnter
-               .append('span')
-               .attr('class', 'issue-autofix')
-               .each(function(d) {
-                   if (!d.autoFix) return;
-                    d3_select(this)
-                       .append('button')
-                       .attr('title', t('issues.fix_one.title'))
-                       .datum(d.autoFix)  // set button datum to the autofix
-                       .attr('class', 'autofix action')
-                       .on('click', function(d3_event, d) {
-                           d3_event.preventDefault();
-                           d3_event.stopPropagation();
-                            var issuesEntityIDs = d.issue.entityIds;
-                           utilHighlightEntities(issuesEntityIDs.concat(d.entityIds), false, context);
-                            context.perform.apply(context, d.autoArgs);
-                           context.validator().validate();
-                       })
-                       .call(svgIcon('#iD-icon-wrench'));
-               });
-           */
-           // Update
+           if (!d3_event.pointerType || d3_event.pointerType === 'mouse') {
+             _lastMouseEvent = d3_event;

 
 

-           items = items.merge(itemsEnter).order();
-           items.selectAll('.issue-message').html(function (d) {
-             return d.message(context);
-           });
-           /*
-           // autofix
-           var canAutoFix = issues.filter(function(issue) { return issue.autoFix; });
-            var autoFixAll = selection.selectAll('.autofix-all')
-               .data(canAutoFix.length ? [0] : []);
-            // exit
-           autoFixAll.exit()
-               .remove();
-            // enter
-           var autoFixAllEnter = autoFixAll.enter()
-               .insert('div', '.issues-list')
-               .attr('class', 'autofix-all');
-            var linkEnter = autoFixAllEnter
-               .append('a')
-               .attr('class', 'autofix-all-link')
-               .attr('href', '#');
-            linkEnter
-               .append('span')
-               .attr('class', 'autofix-all-link-text')
-               .html(t.html('issues.fix_all.title'));
-            linkEnter
-               .append('span')
-               .attr('class', 'autofix-all-link-icon')
-               .call(svgIcon('#iD-icon-wrench'));
-            if (severity === 'warning') {
-               renderIgnoredIssuesReset(selection);
+             if (_downPointers.spacebar) {
+               _downPointers.spacebar.lastEvent = d3_event;
+             }

            }
            }

-            // update
-           autoFixAll = autoFixAll
-               .merge(autoFixAllEnter);
-            autoFixAll.selectAll('.autofix-all-link')
-               .on('click', function() {
-                   context.pauseChangeDispatch();
-                   context.perform(actionNoop());
-                   canAutoFix.forEach(function(issue) {
-                       var args = issue.autoFix.autoArgs.slice();  // copy
-                       if (typeof args[args.length - 1] !== 'function') {
-                           args.pop();
-                       }
-                       args.push(t('issues.fix_all.annotation'));
-                       context.replace.apply(context, args);
-                   });
-                   context.resumeChangeDispatch();
-                   context.validator().validate();
-               });
-           */

          }
 
          }
 

-         context.validator().on('validated.uiSectionValidationIssues' + id, function () {
-           window.requestIdleCallback(function () {
-             reloadIssues();
-             section.reRender();
-           });
-         });
-         context.map().on('move.uiSectionValidationIssues' + id, debounce(function () {
-           window.requestIdleCallback(function () {
-             if (getOptions().where === 'visible') {
-               // must refetch issues if they are viewport-dependent
-               reloadIssues();
-             } // always reload list to re-sort-by-distance
-
-
-             section.reRender();
-           });
-         }, 1000));
-         return section;
-       }
+         function pointerup(d3_event) {
+           var id = (d3_event.pointerId || 'mouse').toString();
+           var pointer = _downPointers[id];
+           if (!pointer) return;
+           delete _downPointers[id];

 
 

-       function uiSectionValidationOptions(context) {
-         var section = uiSection('issues-options', context).content(renderContent);
+           if (_multiselectionPointerId === id) {
+             _multiselectionPointerId = null;
+           }

 
 

-         function renderContent(selection) {
-           var container = selection.selectAll('.issues-options-container').data([0]);
-           container = container.enter().append('div').attr('class', 'issues-options-container').merge(container);
-           var data = [{
-             key: 'what',
-             values: ['edited', 'all']
-           }, {
-             key: 'where',
-             values: ['visible', 'all']
-           }];
-           var options = container.selectAll('.issues-option').data(data, function (d) {
-             return d.key;
-           });
-           var optionsEnter = options.enter().append('div').attr('class', function (d) {
-             return 'issues-option issues-option-' + d.key;
-           });
-           optionsEnter.append('div').attr('class', 'issues-option-title').html(function (d) {
-             return _t.html('issues.options.' + d.key + '.title');
-           });
-           var valuesEnter = optionsEnter.selectAll('label').data(function (d) {
-             return d.values.map(function (val) {
-               return {
-                 value: val,
-                 key: d.key
-               };
-             });
-           }).enter().append('label');
-           valuesEnter.append('input').attr('type', 'radio').attr('name', function (d) {
-             return 'issues-option-' + d.key;
-           }).attr('value', function (d) {
-             return d.value;
-           }).property('checked', function (d) {
-             return getOptions()[d.key] === d.value;
-           }).on('change', function (d3_event, d) {
-             updateOptionValue(d3_event, d.key, d.value);
-           });
-           valuesEnter.append('span').html(function (d) {
-             return _t.html('issues.options.' + d.key + '.' + d.value);
-           });
+           if (pointer.done) return;
+           click(pointer.firstEvent, d3_event, id);

          }
 
          }
 

-         function getOptions() {
-           return {
-             what: corePreferences('validate-what') || 'edited',
-             // 'all', 'edited'
-             where: corePreferences('validate-where') || 'all' // 'all', 'visible'
+         function pointercancel(d3_event) {
+           var id = (d3_event.pointerId || 'mouse').toString();
+           if (!_downPointers[id]) return;
+           delete _downPointers[id];

 
 

-           };
+           if (_multiselectionPointerId === id) {
+             _multiselectionPointerId = null;
+           }

          }
 
          }
 

-         function updateOptionValue(d3_event, d, val) {
-           if (!val && d3_event && d3_event.target) {
-             val = d3_event.target.value;
+         function contextmenu(d3_event) {
+           d3_event.preventDefault();
+
+           if (!+d3_event.clientX && !+d3_event.clientY) {
+             if (_lastMouseEvent) {
+               d3_event.sourceEvent = _lastMouseEvent;
+             } else {
+               return;
+             }
+           } else {
+             _lastMouseEvent = d3_event;
+             _lastInteractionType = 'rightclick';

            }
 
            }
 

-           corePreferences('validate-' + d, val);
-           context.validator().validate();
+           _showMenu = true;
+           click(d3_event, d3_event);

          }
 
          }
 

-         return section;
-       }
+         function click(firstEvent, lastEvent, pointerId) {
+           cancelLongPress();
+           var mapNode = context.container().select('.main-map').node(); // Use the `main-map` coordinate system since the surface and supersurface
+           // are transformed when drag-panning.

 
 

-       function uiSectionValidationRules(context) {
-         var MINSQUARE = 0;
-         var MAXSQUARE = 20;
-         var DEFAULTSQUARE = 5; // see also unsquare_way.js
+           var pointGetter = utilFastMouse(mapNode);
+           var p1 = pointGetter(firstEvent);
+           var p2 = pointGetter(lastEvent);
+           var dist = geoVecLength(p1, p2);

 
 

-         var section = uiSection('issues-rules', context).disclosureContent(renderDisclosureContent).label(_t.html('issues.rules.title'));
+           if (dist > _tolerancePx || !mapContains(lastEvent)) {
+             resetProperties();
+             return;
+           }

 
 

-         var _ruleKeys = context.validator().getRuleKeys().filter(function (key) {
-           return key !== 'maprules';
-         }).sort(function (key1, key2) {
-           // alphabetize by localized title
-           return _t('issues.' + key1 + '.title') < _t('issues.' + key2 + '.title') ? -1 : 1;
-         });
+           var targetDatum = lastEvent.target.__data__;
+           var multiselectEntityId;

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.issues-rulelist-container').data([0]);
-           var containerEnter = container.enter().append('div').attr('class', 'issues-rulelist-container');
-           containerEnter.append('ul').attr('class', 'layer-list issue-rules-list');
-           var ruleLinks = containerEnter.append('div').attr('class', 'issue-rules-links section-footer');
-           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('href', '#').html(_t.html('issues.disable_all')).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.validator().disableRules(_ruleKeys);
-           });
-           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('href', '#').html(_t.html('issues.enable_all')).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.validator().disableRules([]);
-           }); // Update
+           if (!_multiselectionPointerId) {
+             // If a different pointer than the one triggering this click is down on a
+             // feature, treat this and all future clicks as multiselection until that
+             // pointer is raised.
+             var selectPointerInfo = pointerDownOnSelection(pointerId);

 
 

-           container = container.merge(containerEnter);
-           container.selectAll('.issue-rules-list').call(drawListItems, _ruleKeys, 'checkbox', 'rule', toggleRule, isRuleEnabled);
-         }
+             if (selectPointerInfo) {
+               _multiselectionPointerId = selectPointerInfo.pointerId; // if the other feature isn't selected yet, make sure we select it

 
 

-         function drawListItems(selection, data, type, name, change, active) {
-           var items = selection.selectAll('li').data(data); // Exit
+               multiselectEntityId = !selectPointerInfo.selected && selectPointerInfo.entityId;
+               _downPointers[selectPointerInfo.pointerId].done = true;
+             }
+           } // support multiselect if data is already selected

 
 

-           items.exit().remove(); // Enter

 
 

-           var enter = items.enter().append('li');
+           var isMultiselect = context.mode().id === 'select' && ( // and shift key is down
+           lastEvent && lastEvent.shiftKey || // or we're lasso-selecting
+           context.surface().select('.lasso').node() || // or a pointer is down over a selected feature
+           _multiselectionPointerId && !multiselectEntityId);

 
 

-           if (name === 'rule') {
-             enter.call(uiTooltip().title(function (d) {
-               return _t.html('issues.' + d + '.tip');
-             }).placement('top'));
+           processClick(targetDatum, isMultiselect, p2, multiselectEntityId);
+
+           function mapContains(event) {
+             var rect = mapNode.getBoundingClientRect();
+             return event.clientX >= rect.left && event.clientX <= rect.right && event.clientY >= rect.top && event.clientY <= rect.bottom;

            }
 
            }
 

-           var label = enter.append('label');
-           label.append('input').attr('type', type).attr('name', name).on('change', change);
-           label.append('span').html(function (d) {
-             var params = {};
+           function pointerDownOnSelection(skipPointerId) {
+             var mode = context.mode();
+             var selectedIDs = mode.id === 'select' ? mode.selectedIDs() : [];

 
 

-             if (d === 'unsquare_way') {
-               params.val = '<span class="square-degrees"></span>';
-             }
+             for (var pointerId in _downPointers) {
+               if (pointerId === 'spacebar' || pointerId === skipPointerId) continue;
+               var pointerInfo = _downPointers[pointerId];
+               var p1 = pointGetter(pointerInfo.firstEvent);
+               var p2 = pointGetter(pointerInfo.lastEvent);
+               if (geoVecLength(p1, p2) > _tolerancePx) continue;
+               var datum = pointerInfo.firstEvent.target.__data__;
+               var entity = datum && datum.properties && datum.properties.entity || datum;

 
 

-             return _t.html('issues.' + d + '.title', params);
-           }); // Update
+               if (context.graph().hasEntity(entity.id)) {
+                 return {
+                   pointerId: pointerId,
+                   entityId: entity.id,
+                   selected: selectedIDs.indexOf(entity.id) !== -1
+                 };
+               }
+             }

 
 

-           items = items.merge(enter);
-           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', false); // user-configurable square threshold
+             return null;
+           }
+         }

 
 

-           var degStr = corePreferences('validate-square-degrees');
+         function processClick(datum, isMultiselect, point, alsoSelectId) {
+           var mode = context.mode();
+           var showMenu = _showMenu;
+           var interactionType = _lastInteractionType;
+           var entity = datum && datum.properties && datum.properties.entity;
+           if (entity) datum = entity;

 
 

-           if (degStr === null) {
-             degStr = DEFAULTSQUARE.toString();
+           if (datum && datum.type === 'midpoint') {
+             // treat targeting midpoints as if targeting the parent way
+             datum = datum.parents[0];

            }
 
            }
 

-           var span = items.selectAll('.square-degrees');
-           var input = span.selectAll('.square-degrees-input').data([0]); // enter / update
+           var newMode;
+
+           if (datum instanceof osmEntity) {
+             // targeting an entity
+             var selectedIDs = context.selectedIDs();
+             context.selectedNoteID(null);
+             context.selectedErrorID(null);
+
+             if (!isMultiselect) {
+               // don't change the selection if we're toggling the menu atop a multiselection
+               if (!showMenu || selectedIDs.length <= 1 || selectedIDs.indexOf(datum.id) === -1) {
+                 if (alsoSelectId === datum.id) alsoSelectId = null;
+                 selectedIDs = (alsoSelectId ? [alsoSelectId] : []).concat([datum.id]); // always enter modeSelect even if the entity is already
+                 // selected since listeners may expect `context.enter` events,
+                 // e.g. in the walkthrough
+
+                 newMode = mode.id === 'select' ? mode.selectedIDs(selectedIDs) : modeSelect(context, selectedIDs).selectBehavior(behavior);
+                 context.enter(newMode);
+               }
+             } else {
+               if (selectedIDs.indexOf(datum.id) !== -1) {
+                 // clicked entity is already in the selectedIDs list..
+                 if (!showMenu) {
+                   // deselect clicked entity, then reenter select mode or return to browse mode..
+                   selectedIDs = selectedIDs.filter(function (id) {
+                     return id !== datum.id;
+                   });
+                   newMode = selectedIDs.length ? mode.selectedIDs(selectedIDs) : modeBrowse(context).selectBehavior(behavior);
+                   context.enter(newMode);
+                 }
+               } else {
+                 // clicked entity is not in the selected list, add it..
+                 selectedIDs = selectedIDs.concat([datum.id]);
+                 newMode = mode.selectedIDs(selectedIDs);
+                 context.enter(newMode);
+               }
+             }
+           } else if (datum && datum.__featurehash__ && !isMultiselect) {
+             // targeting custom data
+             context.selectedNoteID(null).enter(modeSelectData(context, datum));
+           } else if (datum instanceof osmNote && !isMultiselect) {
+             // targeting a note
+             context.selectedNoteID(datum.id).enter(modeSelectNote(context, datum.id));
+           } else if (datum instanceof QAItem & !isMultiselect) {
+             // targeting an external QA issue
+             context.selectedErrorID(datum.id).enter(modeSelectError(context, datum.id, datum.service));
+           } else {
+             // targeting nothing
+             context.selectedNoteID(null);
+             context.selectedErrorID(null);

 
 

-           input.enter().append('input').attr('type', 'number').attr('min', MINSQUARE.toString()).attr('max', MAXSQUARE.toString()).attr('step', '0.5').attr('class', 'square-degrees-input').call(utilNoAuto).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
-             this.select();
-           }).on('keyup', function (d3_event) {
-             if (d3_event.keyCode === 13) {
-               // ↩ Return
-               this.blur();
-               this.select();
+             if (!isMultiselect && mode.id !== 'browse') {
+               context.enter(modeBrowse(context));

              }
              }

-           }).on('blur', changeSquare).merge(input).property('value', degStr);
-         }
-
-         function changeSquare() {
-           var input = select(this);
-           var degStr = utilGetSetValue(input).trim();
-           var degNum = parseFloat(degStr, 10);
-
-           if (!isFinite(degNum)) {
-             degNum = DEFAULTSQUARE;
-           } else if (degNum > MAXSQUARE) {
-             degNum = MAXSQUARE;
-           } else if (degNum < MINSQUARE) {
-             degNum = MINSQUARE;

            }
 
            }
 

-           degNum = Math.round(degNum * 10) / 10; // round to 1 decimal
+           context.ui().closeEditMenu(); // always request to show the edit menu in case the mode needs it

 
 

-           degStr = degNum.toString();
-           input.property('value', degStr);
-           corePreferences('validate-square-degrees', degStr);
-           context.validator().reloadUnsquareIssues();
+           if (showMenu) context.ui().showEditMenu(point, interactionType);
+           resetProperties();

          }
 
          }
 

-         function isRuleEnabled(d) {
-           return context.validator().isRuleEnabled(d);
+         function cancelLongPress() {
+           if (_longPressTimeout) window.clearTimeout(_longPressTimeout);
+           _longPressTimeout = null;

          }
 
          }
 

-         function toggleRule(d3_event, d) {
-           context.validator().toggleRule(d);
+         function resetProperties() {
+           cancelLongPress();
+           _showMenu = false;
+           _lastInteractionType = null; // don't reset _lastMouseEvent since it might still be useful

          }
 
          }
 

-         context.validator().on('validated.uiSectionValidationRules', function () {
-           window.requestIdleCallback(section.reRender);
-         });
-         return section;
+         function behavior(selection) {
+           resetProperties();
+           _lastMouseEvent = context.map().lastPointerEvent();
+           select(window).on('keydown.select', keydown).on('keyup.select', keyup).on(_pointerPrefix + 'move.select', pointermove, true).on(_pointerPrefix + 'up.select', pointerup, true).on('pointercancel.select', pointercancel, true).on('contextmenu.select-window', function (d3_event) {
+             // Edge and IE really like to show the contextmenu on the
+             // menubar when user presses a keyboard menu button
+             // even after we've already preventdefaulted the key event.
+             var e = d3_event;
+
+             if (+e.clientX === 0 && +e.clientY === 0) {
+               d3_event.preventDefault();
+             }
+           });
+           selection.on(_pointerPrefix + 'down.select', pointerdown).on('contextmenu.select', contextmenu);
+           /*if (d3_event && d3_event.shiftKey) {
+               context.surface()
+                   .classed('behavior-multiselect', true);
+           }*/
+         }
+
+         behavior.off = function (selection) {
+           cancelLongPress();
+           select(window).on('keydown.select', null).on('keyup.select', null).on('contextmenu.select-window', null).on(_pointerPrefix + 'move.select', null, true).on(_pointerPrefix + 'up.select', null, true).on('pointercancel.select', null, true);
+           selection.on(_pointerPrefix + 'down.select', null).on('contextmenu.select', null);
+           context.surface().classed('behavior-multiselect', false);
+         };
+
+         return behavior;

        }
 
        }
 

-       function uiSectionValidationStatus(context) {
-         var section = uiSection('issues-status', context).content(renderContent).shouldDisplay(function () {
-           var issues = context.validator().getIssues(getOptions());
-           return issues.length === 0;
+       function operationContinue(context, selectedIDs) {
+         var _entities = selectedIDs.map(function (id) {
+           return context.graph().entity(id);

          });
 
          });
 

-         function getOptions() {
-           return {
-             what: corePreferences('validate-what') || 'edited',
-             where: corePreferences('validate-where') || 'all'
-           };
-         }
+         var _geometries = Object.assign({
+           line: [],
+           vertex: []
+         }, utilArrayGroupBy(_entities, function (entity) {
+           return entity.geometry(context.graph());
+         }));

 
 

-         function renderContent(selection) {
-           var box = selection.selectAll('.box').data([0]);
-           var boxEnter = box.enter().append('div').attr('class', 'box');
-           boxEnter.append('div').call(svgIcon('#iD-icon-apply', 'pre-text'));
-           var noIssuesMessage = boxEnter.append('span');
-           noIssuesMessage.append('strong').attr('class', 'message');
-           noIssuesMessage.append('br');
-           noIssuesMessage.append('span').attr('class', 'details');
-           renderIgnoredIssuesReset(selection);
-           setNoIssuesText(selection);
+         var _vertex = _geometries.vertex.length && _geometries.vertex[0];
+
+         function candidateWays() {
+           return _vertex ? context.graph().parentWays(_vertex).filter(function (parent) {
+             return parent.geometry(context.graph()) === 'line' && !parent.isClosed() && parent.affix(_vertex.id) && (_geometries.line.length === 0 || _geometries.line[0] === parent);
+           }) : [];

          }
 
          }
 

-         function renderIgnoredIssuesReset(selection) {
-           var ignoredIssues = context.validator().getIssues({
-             what: 'all',
-             where: 'all',
-             includeDisabledRules: true,
-             includeIgnored: 'only'
-           });
-           var resetIgnored = selection.selectAll('.reset-ignored').data(ignoredIssues.length ? [0] : []); // exit
+         var _candidates = candidateWays();

 
 

-           resetIgnored.exit().remove(); // enter
+         var operation = function operation() {
+           var candidate = _candidates[0];
+           context.enter(modeDrawLine(context, candidate.id, context.graph(), 'line', candidate.affix(_vertex.id), true));
+         };

 
 

-           var resetIgnoredEnter = resetIgnored.enter().append('div').attr('class', 'reset-ignored section-footer');
-           resetIgnoredEnter.append('a').attr('href', '#'); // update
+         operation.relatedEntityIds = function () {
+           return _candidates.length ? [_candidates[0].id] : [];
+         };

 
 

-           resetIgnored = resetIgnored.merge(resetIgnoredEnter);
-           resetIgnored.select('a').html(_t('inspector.title_count', {
-             title: _t.html('issues.reset_ignored'),
-             count: ignoredIssues.length
-           }));
-           resetIgnored.on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.validator().resetIgnoredIssues();
+         operation.available = function () {
+           return _geometries.vertex.length === 1 && _geometries.line.length <= 1 && !context.features().hasHiddenConnections(_vertex, context.graph());
+         };
+
+         operation.disabled = function () {
+           if (_candidates.length === 0) {
+             return 'not_eligible';
+           } else if (_candidates.length > 1) {
+             return 'multiple';
+           }
+
+           return false;
+         };
+
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.continue.' + disable) : _t('operations.continue.description');
+         };
+
+         operation.annotation = function () {
+           return _t('operations.continue.annotation.line');
+         };
+
+         operation.id = 'continue';
+         operation.keys = [_t('operations.continue.key')];
+         operation.title = _t('operations.continue.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }
+
+       function operationCopy(context, selectedIDs) {
+         function getFilteredIdsToCopy() {
+           return selectedIDs.filter(function (selectedID) {
+             var entity = context.graph().hasEntity(selectedID); // don't copy untagged vertices separately from ways
+
+             return entity.hasInterestingTags() || entity.geometry(context.graph()) !== 'vertex';

            });
          }
 
            });
          }
 

-         function setNoIssuesText(selection) {
-           var opts = getOptions();
+         var operation = function operation() {
+           var graph = context.graph();
+           var selected = groupEntities(getFilteredIdsToCopy(), graph);
+           var canCopy = [];
+           var skip = {};
+           var entity;
+           var i;

 
 

-           function checkForHiddenIssues(cases) {
-             for (var type in cases) {
-               var hiddenOpts = cases[type];
-               var hiddenIssues = context.validator().getIssues(hiddenOpts);
+           for (i = 0; i < selected.relation.length; i++) {
+             entity = selected.relation[i];

 
 

-               if (hiddenIssues.length) {
-                 selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.' + type, {
-                   count: hiddenIssues.length.toString()
-                 }));
-                 return;
-               }
+             if (!skip[entity.id] && entity.isComplete(graph)) {
+               canCopy.push(entity.id);
+               skip = getDescendants(entity.id, graph, skip);

              }
              }

-
-             selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.none'));

            }
 
            }
 

-           var messageType;
+           for (i = 0; i < selected.way.length; i++) {
+             entity = selected.way[i];

 
 

-           if (opts.what === 'edited' && opts.where === 'visible') {
-             messageType = 'edits_in_view';
-             checkForHiddenIssues({
-               elsewhere: {
-                 what: 'edited',
-                 where: 'all'
-               },
-               everything_else: {
-                 what: 'all',
-                 where: 'visible'
-               },
-               disabled_rules: {
-                 what: 'edited',
-                 where: 'visible',
-                 includeDisabledRules: 'only'
-               },
-               everything_else_elsewhere: {
-                 what: 'all',
-                 where: 'all'
-               },
-               disabled_rules_elsewhere: {
-                 what: 'edited',
-                 where: 'all',
-                 includeDisabledRules: 'only'
-               },
-               ignored_issues: {
-                 what: 'edited',
-                 where: 'visible',
-                 includeIgnored: 'only'
-               },
-               ignored_issues_elsewhere: {
-                 what: 'edited',
-                 where: 'all',
-                 includeIgnored: 'only'
-               }
-             });
-           } else if (opts.what === 'edited' && opts.where === 'all') {
-             messageType = 'edits';
-             checkForHiddenIssues({
-               everything_else: {
-                 what: 'all',
-                 where: 'all'
-               },
-               disabled_rules: {
-                 what: 'edited',
-                 where: 'all',
-                 includeDisabledRules: 'only'
-               },
-               ignored_issues: {
-                 what: 'edited',
-                 where: 'all',
-                 includeIgnored: 'only'
-               }
-             });
-           } else if (opts.what === 'all' && opts.where === 'visible') {
-             messageType = 'everything_in_view';
-             checkForHiddenIssues({
-               elsewhere: {
-                 what: 'all',
-                 where: 'all'
-               },
-               disabled_rules: {
-                 what: 'all',
-                 where: 'visible',
-                 includeDisabledRules: 'only'
-               },
-               disabled_rules_elsewhere: {
-                 what: 'all',
-                 where: 'all',
-                 includeDisabledRules: 'only'
-               },
-               ignored_issues: {
-                 what: 'all',
-                 where: 'visible',
-                 includeIgnored: 'only'
-               },
-               ignored_issues_elsewhere: {
-                 what: 'all',
-                 where: 'all',
-                 includeIgnored: 'only'
-               }
-             });
-           } else if (opts.what === 'all' && opts.where === 'all') {
-             messageType = 'everything';
-             checkForHiddenIssues({
-               disabled_rules: {
-                 what: 'all',
-                 where: 'all',
-                 includeDisabledRules: 'only'
-               },
-               ignored_issues: {
-                 what: 'all',
-                 where: 'all',
-                 includeIgnored: 'only'
-               }
-             });
+             if (!skip[entity.id]) {
+               canCopy.push(entity.id);
+               skip = getDescendants(entity.id, graph, skip);
+             }

            }
 
            }
 

-           if (opts.what === 'edited' && context.history().difference().summary().length === 0) {
-             messageType = 'no_edits';
+           for (i = 0; i < selected.node.length; i++) {
+             entity = selected.node[i];
+
+             if (!skip[entity.id]) {
+               canCopy.push(entity.id);
+             }

            }
 
            }
 

-           selection.select('.box .message').html(_t.html('issues.no_issues.message.' + messageType));
-         }
+           context.copyIDs(canCopy);

 
 

-         context.validator().on('validated.uiSectionValidationStatus', function () {
-           window.requestIdleCallback(section.reRender);
-         });
-         context.map().on('move.uiSectionValidationStatus', debounce(function () {
-           window.requestIdleCallback(section.reRender);
-         }, 1000));
-         return section;
-       }
+           if (_point && (canCopy.length !== 1 || graph.entity(canCopy[0]).type !== 'node')) {
+             // store the anchor coordinates if copying more than a single node
+             context.copyLonLat(context.projection.invert(_point));
+           } else {
+             context.copyLonLat(null);
+           }
+         };

 
 

-       function uiPaneIssues(context) {
-         var issuesPane = uiPane('issues', context).key(_t('issues.key')).label(_t.html('issues.title')).description(_t.html('issues.title')).iconName('iD-icon-alert').sections([uiSectionValidationOptions(context), uiSectionValidationStatus(context), uiSectionValidationIssues('issues-errors', 'error', context), uiSectionValidationIssues('issues-warnings', 'warning', context), uiSectionValidationRules(context)]);
-         return issuesPane;
-       }
+         function groupEntities(ids, graph) {
+           var entities = ids.map(function (id) {
+             return graph.entity(id);
+           });
+           return Object.assign({
+             relation: [],
+             way: [],
+             node: []
+           }, utilArrayGroupBy(entities, 'type'));
+         }

 
 

-       function uiSettingsCustomData(context) {
-         var dispatch$1 = dispatch('change');
+         function getDescendants(id, graph, descendants) {
+           var entity = graph.entity(id);
+           var children;
+           descendants = descendants || {};

 
 

-         function render(selection) {
-           var dataLayer = context.layers().layer('data'); // keep separate copies of original and current settings
+           if (entity.type === 'relation') {
+             children = entity.members.map(function (m) {
+               return m.id;
+             });
+           } else if (entity.type === 'way') {
+             children = entity.nodes;
+           } else {
+             children = [];
+           }

 
 

-           var _origSettings = {
-             fileList: dataLayer && dataLayer.fileList() || null,
-             url: corePreferences('settings-custom-data-url')
-           };
-           var _currSettings = {
-             fileList: dataLayer && dataLayer.fileList() || null,
-             url: corePreferences('settings-custom-data-url')
-           }; // var example = 'https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png';
+           for (var i = 0; i < children.length; i++) {
+             if (!descendants[children[i]]) {
+               descendants[children[i]] = true;
+               descendants = getDescendants(children[i], graph, descendants);
+             }
+           }

 
 

-           var modal = uiConfirm(selection).okButton();
-           modal.classed('settings-modal settings-custom-data', true);
-           modal.select('.modal-section.header').append('h3').html(_t.html('settings.custom_data.header'));
-           var textSection = modal.select('.modal-section.message-text');
-           textSection.append('pre').attr('class', 'instructions-file').html(_t.html('settings.custom_data.file.instructions'));
-           textSection.append('input').attr('class', 'field-file').attr('type', 'file').property('files', _currSettings.fileList) // works for all except IE11
-           .on('change', function (d3_event) {
-             var files = d3_event.target.files;
+           return descendants;
+         }

 
 

-             if (files && files.length) {
-               _currSettings.url = '';
-               textSection.select('.field-url').property('value', '');
-               _currSettings.fileList = files;
-             } else {
-               _currSettings.fileList = null;
-             }
-           });
-           textSection.append('h4').html(_t.html('settings.custom_data.or'));
-           textSection.append('pre').attr('class', 'instructions-url').html(_t.html('settings.custom_data.url.instructions'));
-           textSection.append('textarea').attr('class', 'field-url').attr('placeholder', _t('settings.custom_data.url.placeholder')).call(utilNoAuto).property('value', _currSettings.url); // insert a cancel button
+         operation.available = function () {
+           return getFilteredIdsToCopy().length > 0;
+         };

 
 

-           var buttonSection = modal.select('.modal-section.buttons');
-           buttonSection.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').html(_t.html('confirm.cancel'));
-           buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
-           buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);
+         operation.disabled = function () {
+           var extent = utilTotalExtent(getFilteredIdsToCopy(), context.graph());

 
 

-           function isSaveDisabled() {
-             return null;
-           } // restore the original url
+           if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           }

 
 

+           return false;
+         };

 
 

-           function clickCancel() {
-             textSection.select('.field-url').property('value', _origSettings.url);
-             corePreferences('settings-custom-data-url', _origSettings.url);
-             this.blur();
-             modal.close();
-           } // accept the current url
+         operation.availableForKeypress = function () {
+           var selection = window.getSelection && window.getSelection(); // if the user has text selected then let them copy that, not the selected feature

 
 

+           return !selection || !selection.toString();
+         };

 
 

-           function clickSave() {
-             _currSettings.url = textSection.select('.field-url').property('value').trim(); // one or the other but not both
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.copy.' + disable, {
+             n: selectedIDs.length
+           }) : _t('operations.copy.description', {
+             n: selectedIDs.length
+           });
+         };

 
 

-             if (_currSettings.url) {
-               _currSettings.fileList = null;
-             }
+         operation.annotation = function () {
+           return _t('operations.copy.annotation', {
+             n: selectedIDs.length
+           });
+         };

 
 

-             if (_currSettings.fileList) {
-               _currSettings.url = '';
-             }
+         var _point;

 
 

-             corePreferences('settings-custom-data-url', _currSettings.url);
-             this.blur();
-             modal.close();
-             dispatch$1.call('change', this, _currSettings);
-           }
-         }
+         operation.point = function (val) {
+           _point = val;
+           return operation;
+         };

 
 

-         return utilRebind(render, dispatch$1, 'on');
+         operation.id = 'copy';
+         operation.keys = [uiCmd('⌘C')];
+         operation.title = _t('operations.copy.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;

        }
 
        }
 

-       function uiSectionDataLayers(context) {
-         var settingsCustomData = uiSettingsCustomData(context).on('change', customChanged);
-         var layers = context.layers();
-         var section = uiSection('data-layers', context).label(_t.html('map_data.data_layers')).disclosureContent(renderDisclosureContent);
+       function operationDisconnect(context, selectedIDs) {
+         var _vertexIDs = [];
+         var _wayIDs = [];
+         var _otherIDs = [];
+         var _actions = [];
+         selectedIDs.forEach(function (id) {
+           var entity = context.entity(id);

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.data-layer-container').data([0]);
-           container.enter().append('div').attr('class', 'data-layer-container').merge(container).call(drawOsmItems).call(drawQAItems).call(drawCustomDataItems).call(drawVectorItems) // Beta - Detroit mapping challenge
-           .call(drawPanelItems);
-         }
+           if (entity.type === 'way') {
+             _wayIDs.push(id);
+           } else if (entity.geometry(context.graph()) === 'vertex') {
+             _vertexIDs.push(id);
+           } else {
+             _otherIDs.push(id);
+           }
+         });

 
 

-         function showsLayer(which) {
-           var layer = layers.layer(which);
+         var _coords,
+             _descriptionID = '',
+             _annotationID = 'features';

 
 

-           if (layer) {
-             return layer.enabled();
-           }
+         var _disconnectingVertexIds = [];
+         var _disconnectingWayIds = [];

 
 

-           return false;
-         }
+         if (_vertexIDs.length > 0) {
+           // At the selected vertices, disconnect the selected ways, if any, else
+           // disconnect all connected ways
+           _disconnectingVertexIds = _vertexIDs;

 
 

-         function setLayer(which, enabled) {
-           // Don't allow layer changes while drawing - #6584
-           var mode = context.mode();
-           if (mode && /^draw/.test(mode.id)) return;
-           var layer = layers.layer(which);
+           _vertexIDs.forEach(function (vertexID) {
+             var action = actionDisconnect(vertexID);

 
 

-           if (layer) {
-             layer.enabled(enabled);
+             if (_wayIDs.length > 0) {
+               var waysIDsForVertex = _wayIDs.filter(function (wayID) {
+                 var way = context.entity(wayID);
+                 return way.nodes.indexOf(vertexID) !== -1;
+               });

 
 

-             if (!enabled && (which === 'osm' || which === 'notes')) {
-               context.enter(modeBrowse(context));
+               action.limitWays(waysIDsForVertex);

              }
              }

-           }
-         }

 
 

-         function toggleLayer(which) {
-           setLayer(which, !showsLayer(which));
-         }
+             _actions.push(action);

 
 

-         function drawOsmItems(selection) {
-           var osmKeys = ['osm', 'notes'];
-           var osmLayers = layers.all().filter(function (obj) {
-             return osmKeys.indexOf(obj.id) !== -1;
-           });
-           var ul = selection.selectAll('.layer-list-osm').data([0]);
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-osm').merge(ul);
-           var li = ul.selectAll('.list-item').data(osmLayers);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', function (d) {
-             return 'list-item list-item-' + d.id;
-           });
-           var labelEnter = liEnter.append('label').each(function (d) {
-             if (d.id === 'osm') {
-               select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).keys([uiCmd('⌥' + _t('area_fill.wireframe.key'))]).placement('bottom'));
-             } else {
-               select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).placement('bottom'));
-             }
-           });
-           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
-             toggleLayer(d.id);
+             _disconnectingWayIds = _disconnectingWayIds.concat(context.graph().parentWays(context.graph().entity(vertexID)).map(function (d) {
+               return d.id;
+             }));

            });
            });

-           labelEnter.append('span').html(function (d) {
-             return _t.html('map_data.layers.' + d.id + '.title');
-           }); // Update

 
 

-           li.merge(liEnter).classed('active', function (d) {
-             return d.layer.enabled();
-           }).selectAll('input').property('checked', function (d) {
-             return d.layer.enabled();
+           _disconnectingWayIds = utilArrayUniq(_disconnectingWayIds).filter(function (id) {
+             return _wayIDs.indexOf(id) === -1;

            });
            });

-         }
+           _descriptionID += _actions.length === 1 ? 'single_point.' : 'multiple_points.';

 
 

-         function drawQAItems(selection) {
-           var qaKeys = ['keepRight', 'improveOSM', 'osmose'];
-           var qaLayers = layers.all().filter(function (obj) {
-             return qaKeys.indexOf(obj.id) !== -1;
-           });
-           var ul = selection.selectAll('.layer-list-qa').data([0]);
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-qa').merge(ul);
-           var li = ul.selectAll('.list-item').data(qaLayers);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', function (d) {
-             return 'list-item list-item-' + d.id;
-           });
-           var labelEnter = liEnter.append('label').each(function (d) {
-             select(this).call(uiTooltip().title(_t.html('map_data.layers.' + d.id + '.tooltip')).placement('bottom'));
-           });
-           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
-             toggleLayer(d.id);
+           if (_wayIDs.length === 1) {
+             _descriptionID += 'single_way.' + context.graph().geometry(_wayIDs[0]);
+           } else {
+             _descriptionID += _wayIDs.length === 0 ? 'no_ways' : 'multiple_ways';
+           }
+         } else if (_wayIDs.length > 0) {
+           // Disconnect the selected ways from each other, if they're connected,
+           // else disconnect them from all connected ways
+           var ways = _wayIDs.map(function (id) {
+             return context.entity(id);

            });
            });

-           labelEnter.append('span').html(function (d) {
-             return _t.html('map_data.layers.' + d.id + '.title');
-           }); // Update

 
 

-           li.merge(liEnter).classed('active', function (d) {
-             return d.layer.enabled();
-           }).selectAll('input').property('checked', function (d) {
-             return d.layer.enabled();
-           });
-         } // Beta feature - sample vector layers to support Detroit Mapping Challenge
-         // https://github.com/osmus/detroit-mapping-challenge
+           var nodes = utilGetAllNodes(_wayIDs, context.graph());
+           _coords = nodes.map(function (n) {
+             return n.loc;
+           }); // actions for connected nodes shared by at least two selected ways

 
 

+           var sharedActions = [];
+           var sharedNodes = []; // actions for connected nodes

 
 

-         function drawVectorItems(selection) {
-           var dataLayer = layers.layer('data');
-           var vtData = [{
-             name: 'Detroit Neighborhoods/Parks',
-             src: 'neighborhoods-parks',
-             tooltip: 'Neighborhood boundaries and parks as compiled by City of Detroit in concert with community groups.',
-             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmur6x34562qp9iv1u3ksf-54hev,jonahadkins.cjksmqxdx33jj2wp90xd9x2md-4e5y2/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
-           }, {
-             name: 'Detroit Composite POIs',
-             src: 'composite-poi',
-             tooltip: 'Fire Inspections, Business Licenses, and other public location data collated from the City of Detroit.',
-             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmm6a02sli31myxhsr7zf3-2sw8h/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
-           }, {
-             name: 'Detroit All-The-Places POIs',
-             src: 'alltheplaces-poi',
-             tooltip: 'Public domain business location data created by web scrapers.',
-             template: 'https://{switch:a,b,c,d}.tiles.mapbox.com/v4/jonahadkins.cjksmswgk340g2vo06p1w9w0j-8fjjc/{z}/{x}/{y}.vector.pbf?access_token=pk.eyJ1Ijoiam9uYWhhZGtpbnMiLCJhIjoiRlVVVkx3VSJ9.9sdVEK_B_VkEXPjssU5MqA'
-           }]; // Only show this if the map is around Detroit..
+           var unsharedActions = [];
+           var unsharedNodes = [];
+           nodes.forEach(function (node) {
+             var action = actionDisconnect(node.id).limitWays(_wayIDs);

 
 

-           var detroit = geoExtent([-83.5, 42.1], [-82.8, 42.5]);
-           var showVectorItems = context.map().zoom() > 9 && detroit.contains(context.map().center());
-           var container = selection.selectAll('.vectortile-container').data(showVectorItems ? [0] : []);
-           container.exit().remove();
-           var containerEnter = container.enter().append('div').attr('class', 'vectortile-container');
-           containerEnter.append('h4').attr('class', 'vectortile-header').html('Detroit Vector Tiles (Beta)');
-           containerEnter.append('ul').attr('class', 'layer-list layer-list-vectortile');
-           containerEnter.append('div').attr('class', 'vectortile-footer').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/osmus/detroit-mapping-challenge').append('span').html('About these layers');
-           container = container.merge(containerEnter);
-           var ul = container.selectAll('.layer-list-vectortile');
-           var li = ul.selectAll('.list-item').data(vtData);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', function (d) {
-             return 'list-item list-item-' + d.src;
-           });
-           var labelEnter = liEnter.append('label').each(function (d) {
-             select(this).call(uiTooltip().title(d.tooltip).placement('top'));
-           });
-           labelEnter.append('input').attr('type', 'radio').attr('name', 'vectortile').on('change', selectVTLayer);
-           labelEnter.append('span').html(function (d) {
-             return d.name;
-           }); // Update
+             if (action.disabled(context.graph()) !== 'not_connected') {
+               var count = 0;

 
 

-           li.merge(liEnter).classed('active', isVTLayerSelected).selectAll('input').property('checked', isVTLayerSelected);
+               for (var i in ways) {
+                 var way = ways[i];

 
 

-           function isVTLayerSelected(d) {
-             return dataLayer && dataLayer.template() === d.template;
-           }
+                 if (way.nodes.indexOf(node.id) !== -1) {
+                   count += 1;
+                 }

 
 

-           function selectVTLayer(d3_event, d) {
-             corePreferences('settings-custom-data-url', d.template);
+                 if (count > 1) break;
+               }

 
 

-             if (dataLayer) {
-               dataLayer.template(d.template, d.src);
-               dataLayer.enabled(true);
+               if (count > 1) {
+                 sharedActions.push(action);
+                 sharedNodes.push(node);
+               } else {
+                 unsharedActions.push(action);
+                 unsharedNodes.push(node);
+               }

              }
              }

-           }
-         }
-
-         function drawCustomDataItems(selection) {
-           var dataLayer = layers.layer('data');
-           var hasData = dataLayer && dataLayer.hasData();
-           var showsData = hasData && dataLayer.enabled();
-           var ul = selection.selectAll('.layer-list-data').data(dataLayer ? [0] : []); // Exit
-
-           ul.exit().remove(); // Enter
-
-           var ulEnter = ul.enter().append('ul').attr('class', 'layer-list layer-list-data');
-           var liEnter = ulEnter.append('li').attr('class', 'list-item-data');
-           var labelEnter = liEnter.append('label').call(uiTooltip().title(_t.html('map_data.layers.custom.tooltip')).placement('top'));
-           labelEnter.append('input').attr('type', 'checkbox').on('change', function () {
-             toggleLayer('data');

            });
            });

-           labelEnter.append('span').html(_t.html('map_data.layers.custom.title'));
-           liEnter.append('button').attr('class', 'open-data-options').call(uiTooltip().title(_t.html('settings.custom_data.tooltip')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', editCustom).call(svgIcon('#iD-icon-more'));
-           liEnter.append('button').attr('class', 'zoom-to-data').call(uiTooltip().title(_t.html('map_data.layers.custom.zoom')).placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left')).on('click', function (d3_event) {
-             if (select(this).classed('disabled')) return;
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
-             dataLayer.fitZoom();
-           }).call(svgIcon('#iD-icon-framed-dot', 'monochrome')); // Update
+           _descriptionID += 'no_points.';
+           _descriptionID += _wayIDs.length === 1 ? 'single_way.' : 'multiple_ways.';

 
 

-           ul = ul.merge(ulEnter);
-           ul.selectAll('.list-item-data').classed('active', showsData).selectAll('label').classed('deemphasize', !hasData).selectAll('input').property('disabled', !hasData).property('checked', showsData);
-           ul.selectAll('button.zoom-to-data').classed('disabled', !hasData);
-         }
+           if (sharedActions.length) {
+             // if any nodes are shared, only disconnect the selected ways from each other
+             _actions = sharedActions;
+             _disconnectingVertexIds = sharedNodes.map(function (node) {
+               return node.id;
+             });
+             _descriptionID += 'conjoined';
+             _annotationID = 'from_each_other';
+           } else {
+             // if no nodes are shared, disconnect the selected ways from all connected ways
+             _actions = unsharedActions;
+             _disconnectingVertexIds = unsharedNodes.map(function (node) {
+               return node.id;
+             });

 
 

-         function editCustom(d3_event) {
-           d3_event.preventDefault();
-           context.container().call(settingsCustomData);
+             if (_wayIDs.length === 1) {
+               _descriptionID += context.graph().geometry(_wayIDs[0]);
+             } else {
+               _descriptionID += 'separate';
+             }
+           }

          }
 
          }
 

-         function customChanged(d) {
-           var dataLayer = layers.layer('data');
+         var _extent = utilTotalExtent(_disconnectingVertexIds, context.graph());

 
 

-           if (d && d.url) {
-             dataLayer.url(d.url);
-           } else if (d && d.fileList) {
-             dataLayer.fileList(d.fileList);
-           }
-         }
+         var operation = function operation() {
+           context.perform(function (graph) {
+             return _actions.reduce(function (graph, action) {
+               return action(graph);
+             }, graph);
+           }, operation.annotation());
+           context.validator().validate();
+         };

 
 

-         function drawPanelItems(selection) {
-           var panelsListEnter = selection.selectAll('.md-extras-list').data([0]).enter().append('ul').attr('class', 'layer-list md-extras-list');
-           var historyPanelLabelEnter = panelsListEnter.append('li').attr('class', 'history-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('map_data.history_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.history.key'))]).placement('top'));
-           historyPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             context.ui().info.toggle('history');
-           });
-           historyPanelLabelEnter.append('span').html(_t.html('map_data.history_panel.title'));
-           var measurementPanelLabelEnter = panelsListEnter.append('li').attr('class', 'measurement-panel-toggle-item').append('label').call(uiTooltip().title(_t.html('map_data.measurement_panel.tooltip')).keys([uiCmd('⌘⇧' + _t('info_panels.measurement.key'))]).placement('top'));
-           measurementPanelLabelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             context.ui().info.toggle('measurement');
-           });
-           measurementPanelLabelEnter.append('span').html(_t.html('map_data.measurement_panel.title'));
-         }
+         operation.relatedEntityIds = function () {
+           if (_vertexIDs.length) {
+             return _disconnectingWayIds;
+           }

 
 

-         context.layers().on('change.uiSectionDataLayers', section.reRender);
-         context.map().on('move.uiSectionDataLayers', debounce(function () {
-           // Detroit layers may have moved in or out of view
-           window.requestIdleCallback(section.reRender);
-         }, 1000));
-         return section;
-       }
+           return _disconnectingVertexIds;
+         };

 
 

-       function uiSectionMapFeatures(context) {
-         var _features = context.features().keys();
+         operation.available = function () {
+           if (_actions.length === 0) return false;
+           if (_otherIDs.length !== 0) return false;
+           if (_vertexIDs.length !== 0 && _wayIDs.length !== 0 && !_wayIDs.every(function (wayID) {
+             return _vertexIDs.some(function (vertexID) {
+               var way = context.entity(wayID);
+               return way.nodes.indexOf(vertexID) !== -1;
+             });
+           })) return false;
+           return true;
+         };

 
 

-         var section = uiSection('map-features', context).label(_t.html('map_data.map_features')).disclosureContent(renderDisclosureContent).expandedByDefault(false);
+         operation.disabled = function () {
+           var reason;

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.layer-feature-list-container').data([0]);
-           var containerEnter = container.enter().append('div').attr('class', 'layer-feature-list-container');
-           containerEnter.append('ul').attr('class', 'layer-list layer-feature-list');
-           var footer = containerEnter.append('div').attr('class', 'feature-list-links section-footer');
-           footer.append('a').attr('class', 'feature-list-link').attr('href', '#').html(_t.html('issues.disable_all')).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.features().disableAll();
-           });
-           footer.append('a').attr('class', 'feature-list-link').attr('href', '#').html(_t.html('issues.enable_all')).on('click', function (d3_event) {
-             d3_event.preventDefault();
-             context.features().enableAll();
-           }); // Update
+           for (var actionIndex in _actions) {
+             reason = _actions[actionIndex].disabled(context.graph());
+             if (reason) return reason;
+           }

 
 

-           container = container.merge(containerEnter);
-           container.selectAll('.layer-feature-list').call(drawListItems, _features, 'checkbox', 'feature', clickFeature, showsFeature);
-         }
+           if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large.' + ((_vertexIDs.length ? _vertexIDs : _wayIDs).length === 1 ? 'single' : 'multiple');
+           } else if (_coords && someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           }

 
 

-         function drawListItems(selection, data, type, name, change, active) {
-           var items = selection.selectAll('li').data(data); // Exit
+           return false;

 
 

-           items.exit().remove(); // Enter
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-           var enter = items.enter().append('li').call(uiTooltip().title(function (d) {
-             var tip = _t.html(name + '.' + d + '.tooltip');
+             if (osm) {
+               var missing = _coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-             if (autoHiddenFeature(d)) {
-               var msg = showsLayer('osm') ? _t.html('map_data.autohidden') : _t.html('map_data.osmhidden');
-               tip += '<div>' + msg + '</div>';
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }

              }
 
              }
 

-             return tip;
-           }).placement('top'));
-           var label = enter.append('label');
-           label.append('input').attr('type', type).attr('name', name).on('change', change);
-           label.append('span').html(function (d) {
-             return _t.html(name + '.' + d + '.description');
-           }); // Update
+             return false;
+           }
+         };

 
 

-           items = items.merge(enter);
-           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', autoHiddenFeature);
-         }
+         operation.tooltip = function () {
+           var disable = operation.disabled();

 
 

-         function autoHiddenFeature(d) {
-           return context.features().autoHidden(d);
-         }
+           if (disable) {
+             return _t('operations.disconnect.' + disable);
+           }

 
 

-         function showsFeature(d) {
-           return context.features().enabled(d);
-         }
+           return _t('operations.disconnect.description.' + _descriptionID);
+         };

 
 

-         function clickFeature(d3_event, d) {
-           context.features().toggle(d);
-         }
+         operation.annotation = function () {
+           return _t('operations.disconnect.annotation.' + _annotationID);
+         };

 
 

-         function showsLayer(id) {
-           var layer = context.layers().layer(id);
-           return layer && layer.enabled();
-         } // add listeners
+         operation.id = 'disconnect';
+         operation.keys = [_t('operations.disconnect.key')];
+         operation.title = _t('operations.disconnect.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

+       function operationDowngrade(context, selectedIDs) {
+         var _affectedFeatureCount = 0;

 
 

-         context.features().on('change.map_features', section.reRender);
-         return section;
-       }
+         var _downgradeType = downgradeTypeForEntityIDs(selectedIDs);

 
 

-       function uiSectionMapStyleOptions(context) {
-         var section = uiSection('fill-area', context).label(_t.html('map_data.style_options')).disclosureContent(renderDisclosureContent).expandedByDefault(false);
+         var _multi = _affectedFeatureCount === 1 ? 'single' : 'multiple';

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.layer-fill-list').data([0]);
-           container.enter().append('ul').attr('class', 'layer-list layer-fill-list').merge(container).call(drawListItems, context.map().areaFillOptions, 'radio', 'area_fill', setFill, isActiveFill);
-           var container2 = selection.selectAll('.layer-visual-diff-list').data([0]);
-           container2.enter().append('ul').attr('class', 'layer-list layer-visual-diff-list').merge(container2).call(drawListItems, ['highlight_edits'], 'checkbox', 'visual_diff', toggleHighlightEdited, function () {
-             return context.surface().classed('highlight-edited');
-           });
-         }
+         function downgradeTypeForEntityIDs(entityIds) {
+           var downgradeType;
+           _affectedFeatureCount = 0;

 
 

-         function drawListItems(selection, data, type, name, change, active) {
-           var items = selection.selectAll('li').data(data); // Exit
+           for (var i in entityIds) {
+             var entityID = entityIds[i];
+             var type = downgradeTypeForEntityID(entityID);

 
 

-           items.exit().remove(); // Enter
+             if (type) {
+               _affectedFeatureCount += 1;

 
 

-           var enter = items.enter().append('li').call(uiTooltip().title(function (d) {
-             return _t.html(name + '.' + d + '.tooltip');
-           }).keys(function (d) {
-             var key = d === 'wireframe' ? _t('area_fill.wireframe.key') : null;
-             if (d === 'highlight_edits') key = _t('map_data.highlight_edits.key');
-             return key ? [key] : null;
-           }).placement('top'));
-           var label = enter.append('label');
-           label.append('input').attr('type', type).attr('name', name).on('change', change);
-           label.append('span').html(function (d) {
-             return _t.html(name + '.' + d + '.description');
-           }); // Update
+               if (downgradeType && type !== downgradeType) {
+                 if (downgradeType !== 'generic' && type !== 'generic') {
+                   downgradeType = 'building_address';
+                 } else {
+                   downgradeType = 'generic';
+                 }
+               } else {
+                 downgradeType = type;
+               }
+             }
+           }

 
 

-           items = items.merge(enter);
-           items.classed('active', active).selectAll('input').property('checked', active).property('indeterminate', false);
+           return downgradeType;

          }
 
          }
 

-         function isActiveFill(d) {
-           return context.map().activeAreaFill() === d;
-         }
+         function downgradeTypeForEntityID(entityID) {
+           var graph = context.graph();
+           var entity = graph.entity(entityID);
+           var preset = _mainPresetIndex.match(entity, graph);
+           if (!preset || preset.isFallback()) return null;

 
 

-         function toggleHighlightEdited(d3_event) {
-           d3_event.preventDefault();
-           context.map().toggleHighlightEdited();
-         }
+           if (entity.type === 'node' && preset.id !== 'address' && Object.keys(entity.tags).some(function (key) {
+             return key.match(/^addr:.{1,}/);
+           })) {
+             return 'address';
+           }

 
 

-         function setFill(d3_event, d) {
-           context.map().activeAreaFill(d);
-         }
+           var geometry = entity.geometry(graph);

 
 

-         context.map().on('changeHighlighting.ui_style, changeAreaFill.ui_style', section.reRender);
-         return section;
-       }
+           if (geometry === 'area' && entity.tags.building && !preset.tags.building) {
+             return 'building';
+           }

 
 

-       function uiSectionPhotoOverlays(context) {
-         var layers = context.layers();
-         var section = uiSection('photo-overlays', context).label(_t.html('photo_overlays.title')).disclosureContent(renderDisclosureContent).expandedByDefault(false);
+           if (geometry === 'vertex' && Object.keys(entity.tags).length) {
+             return 'generic';
+           }

 
 

-         function renderDisclosureContent(selection) {
-           var container = selection.selectAll('.photo-overlay-container').data([0]);
-           container.enter().append('div').attr('class', 'photo-overlay-container').merge(container).call(drawPhotoItems).call(drawPhotoTypeItems).call(drawDateFilter).call(drawUsernameFilter);
+           return null;

          }
 
          }
 

-         function drawPhotoItems(selection) {
-           var photoKeys = context.photos().overlayLayerIDs();
-           var photoLayers = layers.all().filter(function (obj) {
-             return photoKeys.indexOf(obj.id) !== -1;
-           });
-           var data = photoLayers.filter(function (obj) {
-             return obj.layer.supported();
-           });
+         var buildingKeysToKeep = ['architect', 'building', 'height', 'layer', 'source', 'type', 'wheelchair'];
+         var addressKeysToKeep = ['source'];

 
 

-           function layerSupported(d) {
-             return d.layer && d.layer.supported();
-           }
+         var operation = function operation() {
+           context.perform(function (graph) {
+             for (var i in selectedIDs) {
+               var entityID = selectedIDs[i];
+               var type = downgradeTypeForEntityID(entityID);
+               if (!type) continue;
+               var tags = Object.assign({}, graph.entity(entityID).tags); // shallow copy

 
 

-           function layerEnabled(d) {
-             return layerSupported(d) && d.layer.enabled();
-           }
+               for (var key in tags) {
+                 if (type === 'address' && addressKeysToKeep.indexOf(key) !== -1) continue;

 
 

-           var ul = selection.selectAll('.layer-list-photos').data([0]);
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-photos').merge(ul);
-           var li = ul.selectAll('.list-item-photos').data(data);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', function (d) {
-             var classes = 'list-item-photos list-item-' + d.id;
+                 if (type === 'building') {
+                   if (buildingKeysToKeep.indexOf(key) !== -1 || key.match(/^building:.{1,}/) || key.match(/^roof:.{1,}/)) continue;
+                 }

 
 

-             if (d.id === 'mapillary-signs' || d.id === 'mapillary-map-features') {
-               classes += ' indented';
-             }
+                 if (type !== 'generic') {
+                   if (key.match(/^addr:.{1,}/) || key.match(/^source:.{1,}/)) continue;
+                 }

 
 

-             return classes;
-           });
-           var labelEnter = liEnter.append('label').each(function (d) {
-             var titleID;
-             if (d.id === 'mapillary-signs') titleID = 'mapillary.signs.tooltip';else if (d.id === 'mapillary') titleID = 'mapillary_images.tooltip';else if (d.id === 'openstreetcam') titleID = 'openstreetcam_images.tooltip';else titleID = d.id.replace(/-/g, '_') + '.tooltip';
-             select(this).call(uiTooltip().title(_t.html(titleID)).placement('top'));
-           });
-           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
-             toggleLayer(d.id);
-           });
-           labelEnter.append('span').html(function (d) {
-             var id = d.id;
-             if (id === 'mapillary-signs') id = 'photo_overlays.traffic_signs';
-             return _t.html(id.replace(/-/g, '_') + '.title');
-           }); // Update
+                 delete tags[key];
+               }

 
 

-           li.merge(liEnter).classed('active', layerEnabled).selectAll('input').property('checked', layerEnabled);
-         }
+               graph = actionChangeTags(entityID, tags)(graph);
+             }

 
 

-         function drawPhotoTypeItems(selection) {
-           var data = context.photos().allPhotoTypes();
+             return graph;
+           }, operation.annotation());
+           context.validator().validate(); // refresh the select mode to enable the delete operation

 
 

-           function typeEnabled(d) {
-             return context.photos().showsPhotoType(d);
-           }
+           context.enter(modeSelect(context, selectedIDs));
+         };

 
 

-           var ul = selection.selectAll('.layer-list-photo-types').data([0]);
-           ul.exit().remove();
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-photo-types').merge(ul);
-           var li = ul.selectAll('.list-item-photo-types').data(context.photos().shouldFilterByPhotoType() ? data : []);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', function (d) {
-             return 'list-item-photo-types list-item-' + d;
-           });
-           var labelEnter = liEnter.append('label').each(function (d) {
-             select(this).call(uiTooltip().title(_t.html('photo_overlays.photo_type.' + d + '.tooltip')).placement('top'));
-           });
-           labelEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event, d) {
-             context.photos().togglePhotoType(d);
-           });
-           labelEnter.append('span').html(function (d) {
-             return _t.html('photo_overlays.photo_type.' + d + '.title');
-           }); // Update
+         operation.available = function () {
+           return _downgradeType;
+         };

 
 

-           li.merge(liEnter).classed('active', typeEnabled).selectAll('input').property('checked', typeEnabled);
-         }
+         operation.disabled = function () {
+           if (selectedIDs.some(hasWikidataTag)) {
+             return 'has_wikidata_tag';
+           }

 
 

-         function drawDateFilter(selection) {
-           var data = context.photos().dateFilters();
+           return false;

 
 

-           function filterEnabled(d) {
-             return context.photos().dateFilterValue(d);
+           function hasWikidataTag(id) {
+             var entity = context.entity(id);
+             return entity.tags.wikidata && entity.tags.wikidata.trim().length > 0;

            }
            }

+         };

 
 

-           var ul = selection.selectAll('.layer-list-date-filter').data([0]);
-           ul.exit().remove();
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-date-filter').merge(ul);
-           var li = ul.selectAll('.list-item-date-filter').data(context.photos().shouldFilterByDate() ? data : []);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', 'list-item-date-filter');
-           var labelEnter = liEnter.append('label').each(function (d) {
-             select(this).call(uiTooltip().title(_t.html('photo_overlays.date_filter.' + d + '.tooltip')).placement('top'));
-           });
-           labelEnter.append('span').html(function (d) {
-             return _t.html('photo_overlays.date_filter.' + d + '.title');
-           });
-           labelEnter.append('input').attr('type', 'date').attr('class', 'list-item-input').attr('placeholder', _t('units.year_month_day')).call(utilNoAuto).each(function (d) {
-             utilGetSetValue(select(this), context.photos().dateFilterValue(d) || '');
-           }).on('change', function (d3_event, d) {
-             var value = utilGetSetValue(select(this)).trim();
-             context.photos().setDateFilter(d, value, true); // reload the displayed dates
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.downgrade.' + disable + '.' + _multi) : _t('operations.downgrade.description.' + _downgradeType);
+         };

 
 

-             li.selectAll('input').each(function (d) {
-               utilGetSetValue(select(this), context.photos().dateFilterValue(d) || '');
-             });
-           });
-           li = li.merge(liEnter).classed('active', filterEnabled);
-         }
+         operation.annotation = function () {
+           var suffix;

 
 

-         function drawUsernameFilter(selection) {
-           function filterEnabled() {
-             return context.photos().usernames();
+           if (_downgradeType === 'building_address') {
+             suffix = 'generic';
+           } else {
+             suffix = _downgradeType;

            }
 
            }
 

-           var ul = selection.selectAll('.layer-list-username-filter').data([0]);
-           ul.exit().remove();
-           ul = ul.enter().append('ul').attr('class', 'layer-list layer-list-username-filter').merge(ul);
-           var li = ul.selectAll('.list-item-username-filter').data(context.photos().shouldFilterByUsername() ? ['username-filter'] : []);
-           li.exit().remove();
-           var liEnter = li.enter().append('li').attr('class', 'list-item-username-filter');
-           var labelEnter = liEnter.append('label').each(function () {
-             select(this).call(uiTooltip().title(_t.html('photo_overlays.username_filter.tooltip')).placement('top'));
-           });
-           labelEnter.append('span').html(_t.html('photo_overlays.username_filter.title'));
-           labelEnter.append('input').attr('type', 'text').attr('class', 'list-item-input').call(utilNoAuto).property('value', usernameValue).on('change', function () {
-             var value = select(this).property('value');
-             context.photos().setUsernameFilter(value, true);
-             select(this).property('value', usernameValue);
+           return _t('operations.downgrade.annotation.' + suffix, {
+             n: _affectedFeatureCount

            });
            });

-           li.merge(liEnter).classed('active', filterEnabled);
+         };

 
 

-           function usernameValue() {
-             var usernames = context.photos().usernames();
-             if (usernames) return usernames.join('; ');
-             return usernames;
-           }
-         }
+         operation.id = 'downgrade';
+         operation.keys = [uiCmd('⌫')];
+         operation.title = _t('operations.downgrade.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-         function toggleLayer(which) {
-           setLayer(which, !showsLayer(which));
-         }
+       function operationExtract(context, selectedIDs) {
+         var _amount = selectedIDs.length === 1 ? 'single' : 'multiple';

 
 

-         function showsLayer(which) {
-           var layer = layers.layer(which);
+         var _geometries = utilArrayUniq(selectedIDs.map(function (entityID) {
+           return context.graph().hasEntity(entityID) && context.graph().geometry(entityID);
+         }).filter(Boolean));

 
 

-           if (layer) {
-             return layer.enabled();
-           }
+         var _geometryID = _geometries.length === 1 ? _geometries[0] : 'feature';

 
 

-           return false;
-         }
+         var _extent;

 
 

-         function setLayer(which, enabled) {
-           var layer = layers.layer(which);
+         var _actions = selectedIDs.map(function (entityID) {
+           var graph = context.graph();
+           var entity = graph.hasEntity(entityID);
+           if (!entity || !entity.hasInterestingTags()) return null;
+           if (entity.type === 'node' && graph.parentWays(entity).length === 0) return null;

 
 

-           if (layer) {
-             layer.enabled(enabled);
+           if (entity.type !== 'node') {
+             var preset = _mainPresetIndex.match(entity, graph); // only allow extraction from ways/relations if the preset supports points
+
+             if (preset.geometry.indexOf('point') === -1) return null;

            }
            }

-         }

 
 

-         context.layers().on('change.uiSectionPhotoOverlays', section.reRender);
-         context.photos().on('change.uiSectionPhotoOverlays', section.reRender);
-         return section;
-       }
+           _extent = _extent ? _extent.extend(entity.extent(graph)) : entity.extent(graph);
+           return actionExtract(entityID, context.projection);
+         }).filter(Boolean);

 
 

-       function uiPaneMapData(context) {
-         var mapDataPane = uiPane('map-data', context).key(_t('map_data.key')).label(_t.html('map_data.title')).description(_t.html('map_data.description')).iconName('iD-icon-data').sections([uiSectionDataLayers(context), uiSectionPhotoOverlays(context), uiSectionMapStyleOptions(context), uiSectionMapFeatures(context)]);
-         return mapDataPane;
-       }
+         var operation = function operation() {
+           var combinedAction = function combinedAction(graph) {
+             _actions.forEach(function (action) {
+               graph = action(graph);
+             });

 
 

-       function uiSectionPrivacy(context) {
-         var section = uiSection('preferences-third-party', context).label(_t.html('preferences.privacy.title')).disclosureContent(renderDisclosureContent);
+             return graph;
+           };

 
 

-         var _showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
+           context.perform(combinedAction, operation.annotation()); // do the extract

 
 

-         function renderDisclosureContent(selection) {
-           // enter
-           var privacyOptionsListEnter = selection.selectAll('.privacy-options-list').data([0]).enter().append('ul').attr('class', 'layer-list privacy-options-list');
-           var thirdPartyIconsEnter = privacyOptionsListEnter.append('li').attr('class', 'privacy-third-party-icons-item').append('label').call(uiTooltip().title(_t.html('preferences.privacy.third_party_icons.tooltip')).placement('bottom'));
-           thirdPartyIconsEnter.append('input').attr('type', 'checkbox').on('change', function (d3_event) {
-             d3_event.preventDefault();
-             _showThirdPartyIcons = _showThirdPartyIcons === 'true' ? 'false' : 'true';
-             corePreferences('preferences.privacy.thirdpartyicons', _showThirdPartyIcons);
-             update();
+           var extractedNodeIDs = _actions.map(function (action) {
+             return action.getExtractedNodeID();

            });
            });

-           thirdPartyIconsEnter.append('span').html(_t.html('preferences.privacy.third_party_icons.description')); // Privacy Policy link

 
 

-           selection.selectAll('.privacy-link').data([0]).enter().append('div').attr('class', 'privacy-link').append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).attr('href', 'https://github.com/openstreetmap/iD/blob/release/PRIVACY.md').append('span').html(_t.html('preferences.privacy.privacy_link'));
-           update();
+           context.enter(modeSelect(context, extractedNodeIDs));
+         };

 
 

-           function update() {
-             selection.selectAll('.privacy-third-party-icons-item').classed('active', _showThirdPartyIcons === 'true').select('input').property('checked', _showThirdPartyIcons === 'true');
+         operation.available = function () {
+           return _actions.length && selectedIDs.length === _actions.length;
+         };
+
+         operation.disabled = function () {
+           if (_extent && _extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (selectedIDs.some(function (entityID) {
+             return context.graph().geometry(entityID) === 'vertex' && context.hasHiddenConnections(entityID);
+           })) {
+             return 'connected_to_hidden';

            }
            }

-         }

 
 

-         return section;
-       }
+           return false;
+         };

 
 

-       function uiPanePreferences(context) {
-         var preferencesPane = uiPane('preferences', context).key(_t('preferences.key')).label(_t.html('preferences.title')).description(_t.html('preferences.description')).iconName('fas-user-cog').sections([uiSectionPrivacy(context)]);
-         return preferencesPane;
-       }
+         operation.tooltip = function () {
+           var disableReason = operation.disabled();

 
 

-       function uiInit(context) {
-         var _initCounter = 0;
-         var _needWidth = {};
+           if (disableReason) {
+             return _t('operations.extract.' + disableReason + '.' + _amount);
+           } else {
+             return _t('operations.extract.description.' + _geometryID + '.' + _amount);
+           }
+         };

 
 

-         var _lastPointerType;
+         operation.annotation = function () {
+           return _t('operations.extract.annotation', {
+             n: selectedIDs.length
+           });
+         };

 
 

-         function render(container) {
-           container.on('click.ui', function (d3_event) {
-             // we're only concerned with the primary mouse button
-             if (d3_event.button !== 0) return;
-             if (!d3_event.composedPath) return; // some targets have default click events we don't want to override
+         operation.id = 'extract';
+         operation.keys = [_t('operations.extract.key')];
+         operation.title = _t('operations.extract.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-             var isOkayTarget = d3_event.composedPath().some(function (node) {
-               // we only care about element nodes
-               return node.nodeType === 1 && ( // clicking <input> focuses it and/or changes a value
-               node.nodeName === 'INPUT' || // clicking <label> affects its <input> by default
-               node.nodeName === 'LABEL' || // clicking <a> opens a hyperlink by default
-               node.nodeName === 'A');
-             });
-             if (isOkayTarget) return; // disable double-tap-to-zoom on touchscreens
+       function operationMerge(context, selectedIDs) {
+         var _action = getAction();

 
 

-             d3_event.preventDefault();
-           });
-           var detected = utilDetect(); // only WebKit supports gesture events
+         function getAction() {
+           // prefer a non-disabled action first
+           var join = actionJoin(selectedIDs);
+           if (!join.disabled(context.graph())) return join;
+           var merge = actionMerge(selectedIDs);
+           if (!merge.disabled(context.graph())) return merge;
+           var mergePolygon = actionMergePolygon(selectedIDs);
+           if (!mergePolygon.disabled(context.graph())) return mergePolygon;
+           var mergeNodes = actionMergeNodes(selectedIDs);
+           if (!mergeNodes.disabled(context.graph())) return mergeNodes; // otherwise prefer an action with an interesting disabled reason

 
 

-           if ('GestureEvent' in window && // Listening for gesture events on iOS 13.4+ breaks double-tapping,
-           // but we only need to do this on desktop Safari anyway. – #7694
-           !detected.isMobileWebKit) {
-             // On iOS we disable pinch-to-zoom of the UI via the `touch-action`
-             // CSS property, but on desktop Safari we need to manually cancel the
-             // default gesture events.
-             container.on('gesturestart.ui gesturechange.ui gestureend.ui', function (d3_event) {
-               // disable pinch-to-zoom of the UI via multitouch trackpads on macOS Safari
-               d3_event.preventDefault();
-             });
-           }
+           if (join.disabled(context.graph()) !== 'not_eligible') return join;
+           if (merge.disabled(context.graph()) !== 'not_eligible') return merge;
+           if (mergePolygon.disabled(context.graph()) !== 'not_eligible') return mergePolygon;
+           return mergeNodes;
+         }

 
 

-           if ('PointerEvent' in window) {
-             select(window).on('pointerdown.ui pointerup.ui', function (d3_event) {
-               var pointerType = d3_event.pointerType || 'mouse';
+         var operation = function operation() {
+           if (operation.disabled()) return;
+           context.perform(_action, operation.annotation());
+           context.validator().validate();
+           var resultIDs = selectedIDs.filter(context.hasEntity);

 
 

-               if (_lastPointerType !== pointerType) {
-                 _lastPointerType = pointerType;
-                 container.attr('pointer', pointerType);
-               }
-             }, true);
-           } else {
-             _lastPointerType = 'mouse';
-             container.attr('pointer', 'mouse');
+           if (resultIDs.length > 1) {
+             var interestingIDs = resultIDs.filter(function (id) {
+               return context.entity(id).hasInterestingTags();
+             });
+             if (interestingIDs.length) resultIDs = interestingIDs;

            }
 
            }
 

-           container.attr('lang', _mainLocalizer.localeCode()).attr('dir', _mainLocalizer.textDirection()); // setup fullscreen keybindings (no button shown at this time)
+           context.enter(modeSelect(context, resultIDs));
+         };

 
 

-           container.call(uiFullScreen(context));
-           var map = context.map();
-           map.redrawEnable(false); // don't draw until we've set zoom/lat/long
+         operation.available = function () {
+           return selectedIDs.length >= 2;
+         };

 
 

-           map.on('hitMinZoom.ui', function () {
-             ui.flash.iconName('#iD-icon-no').label(_t.html('cannot_zoom'))();
-           });
-           container.append('svg').attr('id', 'ideditor-defs').call(ui.svgDefs);
-           container.append('div').attr('class', 'sidebar').call(ui.sidebar);
-           var content = container.append('div').attr('class', 'main-content active'); // Top toolbar
+         operation.disabled = function () {
+           var actionDisabled = _action.disabled(context.graph());

 
 

-           content.append('div').attr('class', 'top-toolbar-wrap').append('div').attr('class', 'top-toolbar fillD').call(uiTopToolbar(context));
-           content.append('div').attr('class', 'main-map').attr('dir', 'ltr').call(map);
-           var overMap = content.append('div').attr('class', 'over-map'); // HACK: Mobile Safari 14 likes to select anything selectable when long-
-           // pressing, even if it's not targeted. This conflicts with long-pressing
-           // to show the edit menu. We add a selectable offscreen element as the first
-           // child to trick Safari into not showing the selection UI.
+           if (actionDisabled) return actionDisabled;
+           var osm = context.connection();

 
 

-           overMap.append('div').attr('class', 'select-trap').text('t');
-           overMap.append('div').attr('class', 'spinner').call(uiSpinner(context));
-           overMap.append('div').attr('class', 'attribution-wrap').attr('dir', 'ltr').call(uiAttribution(context)); // Map controls
+           if (osm && _action.resultingWayNodesLength && _action.resultingWayNodesLength(context.graph()) > osm.maxWayNodes()) {
+             return 'too_many_vertices';
+           }

 
 

-           var controls = overMap.append('div').attr('class', 'map-controls');
-           controls.append('div').attr('class', 'map-control zoombuttons').call(uiZoom(context));
-           controls.append('div').attr('class', 'map-control zoom-to-selection-control').call(uiZoomToSelection(context));
-           controls.append('div').attr('class', 'map-control geolocate-control').call(uiGeolocate(context)); // Add panes
-           // This should happen after map is initialized, as some require surface()
+           return false;
+         };

 
 

-           var panes = overMap.append('div').attr('class', 'map-panes');
-           var uiPanes = [uiPaneBackground(context), uiPaneMapData(context), uiPaneIssues(context), uiPanePreferences(context), uiPaneHelp(context)];
-           uiPanes.forEach(function (pane) {
-             controls.append('div').attr('class', 'map-control map-pane-control ' + pane.id + '-control').call(pane.renderToggleButton);
-             panes.call(pane.renderPane);
-           });
-           ui.info = uiInfo(context); // Add absolutely-positioned elements that sit on top of the map
-           // This should happen after the map is ready (center/zoom)
+         operation.tooltip = function () {
+           var disabled = operation.disabled();

 
 

-           overMap.call(uiMapInMap(context)).call(ui.info).call(uiNotice(context));
-           overMap.append('div').attr('class', 'photoviewer').classed('al', true) // 'al'=left,  'ar'=right
-           .classed('hide', true).call(ui.photoviewer); // Add footer
+           if (disabled) {
+             if (disabled === 'conflicting_relations') {
+               return _t('operations.merge.conflicting_relations');
+             }

 
 

-           var about = content.append('div').attr('class', 'map-footer');
-           about.append('div').attr('class', 'api-status').call(uiStatus(context));
-           var footer = about.append('div').attr('class', 'map-footer-bar fillD');
-           footer.append('div').attr('class', 'flash-wrap footer-hide');
-           var footerWrap = footer.append('div').attr('class', 'main-footer-wrap footer-show');
-           footerWrap.append('div').attr('class', 'scale-block').call(uiScale(context));
-           var aboutList = footerWrap.append('div').attr('class', 'info-block').append('ul').attr('class', 'map-footer-list');
-           aboutList.append('li').attr('class', 'user-list').call(uiContributors(context));
-           var apiConnections = context.apiConnections();
+             if (disabled === 'restriction' || disabled === 'connectivity') {
+               return _t('operations.merge.damage_relation', {
+                 relation: _mainPresetIndex.item('type/' + disabled).name()
+               });
+             }

 
 

-           if (apiConnections && apiConnections.length > 1) {
-             aboutList.append('li').attr('class', 'source-switch').call(uiSourceSwitch(context).keys(apiConnections));
+             return _t('operations.merge.' + disabled);

            }
 
            }
 

-           aboutList.append('li').attr('class', 'issues-info').call(uiIssuesInfo(context));
-           aboutList.append('li').attr('class', 'feature-warning').call(uiFeatureInfo(context));
-           var issueLinks = aboutList.append('li');
-           issueLinks.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/issues').call(svgIcon('#iD-icon-bug', 'light')).call(uiTooltip().title(_t.html('report_a_bug')).placement('top'));
-           issueLinks.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/blob/develop/CONTRIBUTING.md#translating').call(svgIcon('#iD-icon-translate', 'light')).call(uiTooltip().title(_t.html('help_translate')).placement('top'));
-           aboutList.append('li').attr('class', 'version').call(uiVersion(context));
+           return _t('operations.merge.description');
+         };

 
 

-           if (!context.embed()) {
-             aboutList.call(uiAccount(context));
-           } // Setup map dimensions and move map to initial center/zoom.
-           // This should happen after .main-content and toolbars exist.
+         operation.annotation = function () {
+           return _t('operations.merge.annotation', {
+             n: selectedIDs.length
+           });
+         };

 
 

+         operation.id = 'merge';
+         operation.keys = [_t('operations.merge.key')];
+         operation.title = _t('operations.merge.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-           ui.onResize();
-           map.redrawEnable(true);
-           ui.hash = behaviorHash(context);
-           ui.hash();
+       function operationPaste(context) {
+         var _pastePoint;

 
 

-           if (!ui.hash.hadHash) {
-             map.centerZoom([0, 0], 2);
-           } // Bind events
+         var operation = function operation() {
+           if (!_pastePoint) return;
+           var oldIDs = context.copyIDs();
+           if (!oldIDs.length) return;
+           var projection = context.projection;
+           var extent = geoExtent();
+           var oldGraph = context.copyGraph();
+           var newIDs = [];
+           var action = actionCopyEntities(oldIDs, oldGraph);
+           context.perform(action);
+           var copies = action.copies();
+           var originals = new Set();
+           Object.values(copies).forEach(function (entity) {
+             originals.add(entity.id);
+           });

 
 

+           for (var id in copies) {
+             var oldEntity = oldGraph.entity(id);
+             var newEntity = copies[id];

 
 

-           window.onbeforeunload = function () {
-             return context.save();
-           };
+             extent._extend(oldEntity.extent(oldGraph)); // Exclude child nodes from newIDs if their parent way was also copied.

 
 

-           window.onunload = function () {
-             context.history().unlock();
-           };

 
 

-           select(window).on('resize.editor', function () {
-             ui.onResize();
-           });
-           var panPixels = 80;
-           context.keybinding().on('⌫', function (d3_event) {
-             d3_event.preventDefault();
-           }).on([_t('sidebar.key'), '`', '²', '@'], ui.sidebar.toggle) // #5663, #6864 - common QWERTY, AZERTY
-           .on('←', pan([panPixels, 0])).on('↑', pan([0, panPixels])).on('→', pan([-panPixels, 0])).on('↓', pan([0, -panPixels])).on(uiCmd('⌥←'), pan([map.dimensions()[0], 0])).on(uiCmd('⌥↑'), pan([0, map.dimensions()[1]])).on(uiCmd('⌥→'), pan([-map.dimensions()[0], 0])).on(uiCmd('⌥↓'), pan([0, -map.dimensions()[1]])).on(uiCmd('⌘' + _t('background.key')), function quickSwitch(d3_event) {
-             if (d3_event) {
-               d3_event.stopImmediatePropagation();
-               d3_event.preventDefault();
+             var parents = context.graph().parentWays(newEntity);
+             var parentCopied = parents.some(function (parent) {
+               return originals.has(parent.id);
+             });
+
+             if (!parentCopied) {
+               newIDs.push(newEntity.id);

              }
              }

+           } // Use the location of the copy operation to offset the paste location,
+           // or else use the center of the pasted extent

 
 

-             var previousBackground = context.background().findSource(corePreferences('background-last-used-toggle'));

 
 

-             if (previousBackground) {
-               var currentBackground = context.background().baseLayerSource();
-               corePreferences('background-last-used-toggle', currentBackground.id);
-               corePreferences('background-last-used', previousBackground.id);
-               context.background().baseLayerSource(previousBackground);
-             }
-           }).on(_t('area_fill.wireframe.key'), function toggleWireframe(d3_event) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation();
-             context.map().toggleWireframe();
-           }).on(uiCmd('⌥' + _t('area_fill.wireframe.key')), function toggleOsmData(d3_event) {
-             d3_event.preventDefault();
-             d3_event.stopPropagation(); // Don't allow layer changes while drawing - #6584
+           var copyPoint = context.copyLonLat() && projection(context.copyLonLat()) || projection(extent.center());
+           var delta = geoVecSubtract(_pastePoint, copyPoint); // Move the pasted objects to be anchored at the paste location

 
 

-             var mode = context.mode();
-             if (mode && /^draw/.test(mode.id)) return;
-             var layer = context.layers().layer('osm');
+           context.replace(actionMove(newIDs, delta, projection), operation.annotation());
+           context.enter(modeSelect(context, newIDs));
+         };

 
 

-             if (layer) {
-               layer.enabled(!layer.enabled());
+         operation.point = function (val) {
+           _pastePoint = val;
+           return operation;
+         };

 
 

-               if (!layer.enabled()) {
-                 context.enter(modeBrowse(context));
-               }
-             }
-           }).on(_t('map_data.highlight_edits.key'), function toggleHighlightEdited(d3_event) {
-             d3_event.preventDefault();
-             context.map().toggleHighlightEdited();
-           });
-           context.on('enter.editor', function (entered) {
-             container.classed('mode-' + entered.id, true);
-           }).on('exit.editor', function (exited) {
-             container.classed('mode-' + exited.id, false);
-           });
-           context.enter(modeBrowse(context));
+         operation.available = function () {
+           return context.mode().id === 'browse';
+         };

 
 

-           if (!_initCounter++) {
-             if (!ui.hash.startWalkthrough) {
-               context.container().call(uiSplash(context)).call(uiRestore(context));
-             }
+         operation.disabled = function () {
+           return !context.copyIDs().length;
+         };

 
 

-             context.container().call(ui.shortcuts);
+         operation.tooltip = function () {
+           var oldGraph = context.copyGraph();
+           var ids = context.copyIDs();
+
+           if (!ids.length) {
+             return _t('operations.paste.nothing_copied');

            }
 
            }
 

-           var osm = context.connection();
-           var auth = uiLoading(context).message(_t.html('loading_auth')).blocking(true);
+           return _t('operations.paste.description', {
+             feature: utilDisplayLabel(oldGraph.entity(ids[0]), oldGraph),
+             n: ids.length
+           });
+         };

 
 

-           if (osm && auth) {
-             osm.on('authLoading.ui', function () {
-               context.container().call(auth);
-             }).on('authDone.ui', function () {
-               auth.close();
+         operation.annotation = function () {
+           var ids = context.copyIDs();
+           return _t('operations.paste.annotation', {
+             n: ids.length
+           });
+         };
+
+         operation.id = 'paste';
+         operation.keys = [uiCmd('⌘V')];
+         operation.title = _t('operations.paste.title');
+         return operation;
+       }
+
+       function operationReverse(context, selectedIDs) {
+         var operation = function operation() {
+           context.perform(function combinedReverseAction(graph) {
+             actions().forEach(function (action) {
+               graph = action(graph);

              });
              });

-           }
+             return graph;
+           }, operation.annotation());
+           context.validator().validate();
+         };

 
 

-           _initCounter++;
+         function actions(situation) {
+           return selectedIDs.map(function (entityID) {
+             var entity = context.hasEntity(entityID);
+             if (!entity) return null;

 
 

-           if (ui.hash.startWalkthrough) {
-             ui.hash.startWalkthrough = false;
-             context.container().call(uiIntro(context));
-           }
+             if (situation === 'toolbar') {
+               if (entity.type === 'way' && !entity.isOneWay() && !entity.isSided()) return null;
+             }

 
 

-           function pan(d) {
-             return function (d3_event) {
-               if (d3_event.shiftKey) return;
-               if (context.container().select('.combobox').size()) return;
-               d3_event.preventDefault();
-               context.map().pan(d, 100);
-             };
-           }
+             var geometry = entity.geometry(context.graph());
+             if (entity.type !== 'node' && geometry !== 'line') return null;
+             var action = actionReverse(entityID);
+             if (action.disabled(context.graph())) return null;
+             return action;
+           }).filter(Boolean);

          }
 
          }
 

-         var ui = {};
-
-         var _loadPromise; // renders the iD interface into the container node
-
-
-         ui.ensureLoaded = function () {
-           if (_loadPromise) return _loadPromise;
-           return _loadPromise = Promise.all([// must have strings and presets before loading the UI
-           _mainLocalizer.ensureLoaded(), _mainPresetIndex.ensureLoaded()]).then(function () {
-             if (!context.container().empty()) render(context.container());
-           })["catch"](function (err) {
-             return console.error(err);
-           }); // eslint-disable-line
-         }; // `ui.restart()` will destroy and rebuild the entire iD interface,
-         // for example to switch the locale while iD is running.
-
+         function reverseTypeID() {
+           var acts = actions();
+           var nodeActionCount = acts.filter(function (act) {
+             var entity = context.hasEntity(act.entityID());
+             return entity && entity.type === 'node';
+           }).length;
+           if (nodeActionCount === 0) return 'line';
+           if (nodeActionCount === acts.length) return 'point';
+           return 'feature';
+         }

 
 

-         ui.restart = function () {
-           context.keybinding().clear();
-           _loadPromise = null;
-           context.container().selectAll('*').remove();
-           ui.ensureLoaded();
+         operation.available = function (situation) {
+           return actions(situation).length > 0;

          };
 
          };
 

-         ui.lastPointerType = function () {
-           return _lastPointerType;
+         operation.disabled = function () {
+           return false;

          };
 
          };
 

-         ui.svgDefs = svgDefs(context);
-         ui.flash = uiFlash(context);
-         ui.sidebar = uiSidebar(context);
-         ui.photoviewer = uiPhotoviewer(context);
-         ui.shortcuts = uiShortcuts(context);
+         operation.tooltip = function () {
+           return _t('operations.reverse.description.' + reverseTypeID());
+         };

 
 

-         ui.onResize = function (withPan) {
-           var map = context.map(); // Recalc dimensions of map and sidebar.. (`true` = force recalc)
-           // This will call `getBoundingClientRect` and trigger reflow,
-           //  but the values will be cached for later use.
+         operation.annotation = function () {
+           var acts = actions();
+           return _t('operations.reverse.annotation.' + reverseTypeID(), {
+             n: acts.length
+           });
+         };

 
 

-           var mapDimensions = utilGetDimensions(context.container().select('.main-content'), true);
-           utilGetDimensions(context.container().select('.sidebar'), true);
+         operation.id = 'reverse';
+         operation.keys = [_t('operations.reverse.key')];
+         operation.title = _t('operations.reverse.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-           if (withPan !== undefined) {
-             map.redrawEnable(false);
-             map.pan(withPan);
-             map.redrawEnable(true);
-           }
+       function operationSplit(context, selectedIDs) {
+         var _vertexIds = selectedIDs.filter(function (id) {
+           return context.graph().geometry(id) === 'vertex';
+         });

 
 

-           map.dimensions(mapDimensions);
-           ui.photoviewer.onMapResize(); // check if header or footer have overflowed
+         var _selectedWayIds = selectedIDs.filter(function (id) {
+           var entity = context.graph().hasEntity(id);
+           return entity && entity.type === 'way';
+         });

 
 

-           ui.checkOverflow('.top-toolbar');
-           ui.checkOverflow('.map-footer-bar'); // Use outdated code so it works on Explorer
+         var _isAvailable = _vertexIds.length > 0 && _vertexIds.length + _selectedWayIds.length === selectedIDs.length;

 
 

-           var resizeWindowEvent = document.createEvent('Event');
-           resizeWindowEvent.initEvent('resizeWindow', true, true);
-           document.dispatchEvent(resizeWindowEvent);
-         }; // Call checkOverflow when resizing or whenever the contents change.
+         var _action = actionSplit(_vertexIds);

 
 

+         var _ways = [];
+         var _geometry = 'feature';
+         var _waysAmount = 'single';

 
 

-         ui.checkOverflow = function (selector, reset) {
-           if (reset) {
-             delete _needWidth[selector];
-           }
+         var _nodesAmount = _vertexIds.length === 1 ? 'single' : 'multiple';

 
 

-           var element = select(selector);
-           var scrollWidth = element.property('scrollWidth');
-           var clientWidth = element.property('clientWidth');
-           var needed = _needWidth[selector] || scrollWidth;
+         if (_isAvailable) {
+           if (_selectedWayIds.length) _action.limitWays(_selectedWayIds);
+           _ways = _action.ways(context.graph());
+           var geometries = {};

 
 

-           if (scrollWidth > clientWidth) {
-             // overflow happening
-             element.classed('narrow', true);
+           _ways.forEach(function (way) {
+             geometries[way.geometry(context.graph())] = true;
+           });

 
 

-             if (!_needWidth[selector]) {
-               _needWidth[selector] = scrollWidth;
-             }
-           } else if (scrollWidth >= needed) {
-             element.classed('narrow', false);
+           if (Object.keys(geometries).length === 1) {
+             _geometry = Object.keys(geometries)[0];

            }
            }

-         };

 
 

-         ui.togglePanes = function (showPane) {
-           var hidePanes = context.container().selectAll('.map-pane.shown');
-           var side = _mainLocalizer.textDirection() === 'ltr' ? 'right' : 'left';
-           hidePanes.classed('shown', false).classed('hide', true);
-           context.container().selectAll('.map-pane-control button').classed('active', false);
+           _waysAmount = _ways.length === 1 ? 'single' : 'multiple';
+         }

 
 

-           if (showPane) {
-             hidePanes.classed('shown', false).classed('hide', true).style(side, '-500px');
-             context.container().selectAll('.' + showPane.attr('pane') + '-control button').classed('active', true);
-             showPane.classed('shown', true).classed('hide', false);
+         var operation = function operation() {
+           var difference = context.perform(_action, operation.annotation()); // select both the nodes and the ways so the mapper can immediately disconnect them if desired

 
 

-             if (hidePanes.empty()) {
-               showPane.style(side, '-500px').transition().duration(200).style(side, '0px');
-             } else {
-               showPane.style(side, '0px');
-             }
-           } else {
-             hidePanes.classed('shown', true).classed('hide', false).style(side, '0px').transition().duration(200).style(side, '-500px').on('end', function () {
-               select(this).classed('shown', false).classed('hide', true);
-             });
-           }
-         };
+           var idsToSelect = _vertexIds.concat(difference.extantIDs().filter(function (id) {
+             // filter out relations that may have had member additions
+             return context.entity(id).type === 'way';
+           }));

 
 

-         var _editMenu = uiEditMenu(context);
+           context.enter(modeSelect(context, idsToSelect));
+         };

 
 

-         ui.editMenu = function () {
-           return _editMenu;
+         operation.relatedEntityIds = function () {
+           return _selectedWayIds.length ? [] : _ways.map(function (way) {
+             return way.id;
+           });

          };
 
          };
 

-         ui.showEditMenu = function (anchorPoint, triggerType, operations) {
-           // remove any displayed menu
-           ui.closeEditMenu();
-           if (!operations && context.mode().operations) operations = context.mode().operations();
-           if (!operations || !operations.length) return; // disable menu if in wide selection, for example
+         operation.available = function () {
+           return _isAvailable;
+         };

 
 

-           if (!context.map().editableDataEnabled()) return;
-           var surfaceNode = context.surface().node();
+         operation.disabled = function () {
+           var reason = _action.disabled(context.graph());

 
 

-           if (surfaceNode.focus) {
-             // FF doesn't support it
-             // focus the surface or else clicking off the menu may not trigger modeBrowse
-             surfaceNode.focus();
+           if (reason) {
+             return reason;
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';

            }
 
            }
 

-           operations.forEach(function (operation) {
-             if (operation.point) operation.point(anchorPoint);
-           });
-
-           _editMenu.anchorLoc(anchorPoint).triggerType(triggerType).operations(operations); // render the menu
-
+           return false;
+         };

 
 

-           context.map().supersurface.call(_editMenu);
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           if (disable) return _t('operations.split.' + disable);
+           return _t('operations.split.description.' + _geometry + '.' + _waysAmount + '.' + _nodesAmount + '_node');

          };
 
          };
 

-         ui.closeEditMenu = function () {
-           // remove any existing menu no matter how it was added
-           context.map().supersurface.select('.edit-menu').remove();
+         operation.annotation = function () {
+           return _t('operations.split.annotation.' + _geometry, {
+             n: _ways.length
+           });

          };
 
          };
 

-         var _saveLoading = select(null);
+         operation.id = 'split';
+         operation.keys = [_t('operations.split.key')];
+         operation.title = _t('operations.split.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }

 
 

-         context.uploader().on('saveStarted.ui', function () {
-           _saveLoading = uiLoading(context).message(_t.html('save.uploading')).blocking(true);
-           context.container().call(_saveLoading); // block input during upload
-         }).on('saveEnded.ui', function () {
-           _saveLoading.close();
+       function operationStraighten(context, selectedIDs) {
+         var _wayIDs = selectedIDs.filter(function (id) {
+           return id.charAt(0) === 'w';
+         });

 
 

-           _saveLoading = select(null);
+         var _nodeIDs = selectedIDs.filter(function (id) {
+           return id.charAt(0) === 'n';

          });
          });

-         return ui;
-       }

 
 

-       function coreContext() {
-         var _this = this;
+         var _amount = (_wayIDs.length ? _wayIDs : _nodeIDs).length === 1 ? 'single' : 'multiple';

 
 

-         var dispatch$1 = dispatch('enter', 'exit', 'change');
-         var context = utilRebind({}, dispatch$1, 'on');
+         var _nodes = utilGetAllNodes(selectedIDs, context.graph());

 
 

-         var _deferred = new Set();
+         var _coords = _nodes.map(function (n) {
+           return n.loc;
+         });

 
 

-         context.version = '2.19.2';
-         context.privacyVersion = '20200407'; // iD will alter the hash so cache the parameters intended to setup the session
+         var _extent = utilTotalExtent(selectedIDs, context.graph());

 
 

-         context.initialHashParams = window.location.hash ? utilStringQs(window.location.hash) : {};
-         context.isFirstSession = !corePreferences('sawSplash') && !corePreferences('sawPrivacyVersion');
-         /* Changeset */
-         // An osmChangeset object. Not loaded until needed.
+         var _action = chooseAction();

 
 

-         context.changeset = null;
-         var _defaultChangesetComment = context.initialHashParams.comment;
-         var _defaultChangesetSource = context.initialHashParams.source;
-         var _defaultChangesetHashtags = context.initialHashParams.hashtags;
+         var _geometry;

 
 

-         context.defaultChangesetComment = function (val) {
-           if (!arguments.length) return _defaultChangesetComment;
-           _defaultChangesetComment = val;
-           return context;
-         };
+         function chooseAction() {
+           // straighten selected nodes
+           if (_wayIDs.length === 0 && _nodeIDs.length > 2) {
+             _geometry = 'point';
+             return actionStraightenNodes(_nodeIDs, context.projection); // straighten selected ways (possibly between range of 2 selected nodes)
+           } else if (_wayIDs.length > 0 && (_nodeIDs.length === 0 || _nodeIDs.length === 2)) {
+             var startNodeIDs = [];
+             var endNodeIDs = [];

 
 

-         context.defaultChangesetSource = function (val) {
-           if (!arguments.length) return _defaultChangesetSource;
-           _defaultChangesetSource = val;
-           return context;
-         };
+             for (var i = 0; i < selectedIDs.length; i++) {
+               var entity = context.entity(selectedIDs[i]);

 
 

-         context.defaultChangesetHashtags = function (val) {
-           if (!arguments.length) return _defaultChangesetHashtags;
-           _defaultChangesetHashtags = val;
-           return context;
-         };
-         /* Document title */
+               if (entity.type === 'node') {
+                 continue;
+               } else if (entity.type !== 'way' || entity.isClosed()) {
+                 return null; // exit early, can't straighten these
+               }

 
 

-         /* (typically shown as the label for the browser window/tab) */
-         // If true, iD will update the title based on what the user is doing
+               startNodeIDs.push(entity.first());
+               endNodeIDs.push(entity.last());
+             } // Remove duplicate end/startNodeIDs (duplicate nodes cannot be at the line end)

 
 
 
 

-         var _setsDocumentTitle = true;
+             startNodeIDs = startNodeIDs.filter(function (n) {
+               return startNodeIDs.indexOf(n) === startNodeIDs.lastIndexOf(n);
+             });
+             endNodeIDs = endNodeIDs.filter(function (n) {
+               return endNodeIDs.indexOf(n) === endNodeIDs.lastIndexOf(n);
+             }); // Ensure all ways are connected (i.e. only 2 unique endpoints/startpoints)

 
 

-         context.setsDocumentTitle = function (val) {
-           if (!arguments.length) return _setsDocumentTitle;
-           _setsDocumentTitle = val;
-           return context;
-         }; // The part of the title that is always the same
+             if (utilArrayDifference(startNodeIDs, endNodeIDs).length + utilArrayDifference(endNodeIDs, startNodeIDs).length !== 2) return null; // Ensure path contains at least 3 unique nodes

 
 

+             var wayNodeIDs = utilGetAllNodes(_wayIDs, context.graph()).map(function (node) {
+               return node.id;
+             });
+             if (wayNodeIDs.length <= 2) return null; // If range of 2 selected nodes is supplied, ensure nodes lie on the selected path

 
 

-         var _documentTitleBase = document.title;
+             if (_nodeIDs.length === 2 && (wayNodeIDs.indexOf(_nodeIDs[0]) === -1 || wayNodeIDs.indexOf(_nodeIDs[1]) === -1)) return null;

 
 

-         context.documentTitleBase = function (val) {
-           if (!arguments.length) return _documentTitleBase;
-           _documentTitleBase = val;
-           return context;
-         };
-         /* User interface and keybinding */
+             if (_nodeIDs.length) {
+               // If we're only straightenting between two points, we only need that extent visible
+               _extent = utilTotalExtent(_nodeIDs, context.graph());
+             }

 
 

+             _geometry = 'line';
+             return actionStraightenWay(selectedIDs, context.projection);
+           }

 
 

-         var _ui;
+           return null;
+         }

 
 

-         context.ui = function () {
-           return _ui;
-         };
+         function operation() {
+           if (!_action) return;
+           context.perform(_action, operation.annotation());
+           window.setTimeout(function () {
+             context.validator().validate();
+           }, 300); // after any transition
+         }

 
 

-         context.lastPointerType = function () {
-           return _ui.lastPointerType();
+         operation.available = function () {
+           return Boolean(_action);

          };
 
          };
 

-         var _keybinding = utilKeybinding('context');
-
-         context.keybinding = function () {
-           return _keybinding;
-         };
+         operation.disabled = function () {
+           var reason = _action.disabled(context.graph());

 
 

-         select(document).call(_keybinding);
-         /* Straight accessors. Avoid using these if you can. */
-         // Instantiate the connection here because it doesn't require passing in
-         // `context` and it's needed for pre-init calls like `preauth`
+           if (reason) {
+             return reason;
+           } else if (_extent.percentContainedIn(context.map().extent()) < 0.8) {
+             return 'too_large';
+           } else if (someMissing()) {
+             return 'not_downloaded';
+           } else if (selectedIDs.some(context.hasHiddenConnections)) {
+             return 'connected_to_hidden';
+           }

 
 

-         var _connection = services.osm;
+           return false;

 
 

-         var _history;
+           function someMissing() {
+             if (context.inIntro()) return false;
+             var osm = context.connection();

 
 

-         var _validator;
+             if (osm) {
+               var missing = _coords.filter(function (loc) {
+                 return !osm.isDataLoaded(loc);
+               });

 
 

-         var _uploader;
+               if (missing.length) {
+                 missing.forEach(function (loc) {
+                   context.loadTileAtLoc(loc);
+                 });
+                 return true;
+               }
+             }

 
 

-         context.connection = function () {
-           return _connection;
+             return false;
+           }

          };
 
          };
 

-         context.history = function () {
-           return _history;
+         operation.tooltip = function () {
+           var disable = operation.disabled();
+           return disable ? _t('operations.straighten.' + disable + '.' + _amount) : _t('operations.straighten.description.' + _geometry + (_wayIDs.length === 1 ? '' : 's'));

          };
 
          };
 

-         context.validator = function () {
-           return _validator;
+         operation.annotation = function () {
+           return _t('operations.straighten.annotation.' + _geometry, {
+             n: _wayIDs.length ? _wayIDs.length : _nodeIDs.length
+           });

          };
 
          };
 

-         context.uploader = function () {
-           return _uploader;
+         operation.id = 'straighten';
+         operation.keys = [_t('operations.straighten.key')];
+         operation.title = _t('operations.straighten.title');
+         operation.behavior = behaviorOperation(context).which(operation);
+         return operation;
+       }
+
+       var Operations = /*#__PURE__*/Object.freeze({
+               __proto__: null,
+               operationCircularize: operationCircularize,
+               operationContinue: operationContinue,
+               operationCopy: operationCopy,
+               operationDelete: operationDelete,
+               operationDisconnect: operationDisconnect,
+               operationDowngrade: operationDowngrade,
+               operationExtract: operationExtract,
+               operationMerge: operationMerge,
+               operationMove: operationMove,
+               operationOrthogonalize: operationOrthogonalize,
+               operationPaste: operationPaste,
+               operationReflectShort: operationReflectShort,
+               operationReflectLong: operationReflectLong,
+               operationReverse: operationReverse,
+               operationRotate: operationRotate,
+               operationSplit: operationSplit,
+               operationStraighten: operationStraighten
+       });
+
+       function modeSelect(context, selectedIDs) {
+         var mode = {
+           id: 'select',
+           button: 'browse'

          };
          };

-         /* Connection */
+         var keybinding = utilKeybinding('select');

 
 

+         var _breatheBehavior = behaviorBreathe();

 
 

-         context.preauth = function (options) {
-           if (_connection) {
-             _connection["switch"](options);
-           }
+         var _modeDragNode = modeDragNode(context);

 
 

-           return context;
-         };
-         /* connection options for source switcher (optional) */
+         var _selectBehavior;

 
 

+         var _behaviors = [];
+         var _operations = [];
+         var _newFeature = false;
+         var _follow = false; // `_focusedParentWayId` is used when we visit a vertex with multiple
+         // parents, and we want to remember which parent line we started on.

 
 

-         var _apiConnections;
+         var _focusedParentWayId;

 
 

-         context.apiConnections = function (val) {
-           if (!arguments.length) return _apiConnections;
-           _apiConnections = val;
-           return context;
-         }; // A string or array or locale codes to prefer over the browser's settings
+         var _focusedVertexIds;

 
 

+         function singular() {
+           if (selectedIDs && selectedIDs.length === 1) {
+             return context.hasEntity(selectedIDs[0]);
+           }
+         }

 
 

-         context.locale = function (locale) {
-           if (!arguments.length) return _mainLocalizer.localeCode();
-           _mainLocalizer.preferredLocaleCodes(locale);
-           return context;
-         };
+         function selectedEntities() {
+           return selectedIDs.map(function (id) {
+             return context.hasEntity(id);
+           }).filter(Boolean);
+         }

 
 

-         function afterLoad(cid, callback) {
-           return function (err, result) {
-             if (err) {
-               // 400 Bad Request, 401 Unauthorized, 403 Forbidden..
-               if (err.status === 400 || err.status === 401 || err.status === 403) {
-                 if (_connection) {
-                   _connection.logout();
-                 }
-               }
+         function checkSelectedIDs() {
+           var ids = [];

 
 

-               if (typeof callback === 'function') {
-                 callback(err);
-               }
+           if (Array.isArray(selectedIDs)) {
+             ids = selectedIDs.filter(function (id) {
+               return context.hasEntity(id);
+             });
+           }

 
 

-               return;
-             } else if (_connection && _connection.getConnectionId() !== cid) {
-               if (typeof callback === 'function') {
-                 callback({
-                   message: 'Connection Switched',
-                   status: -1
-                 });
-               }
+           if (!ids.length) {
+             context.enter(modeBrowse(context));
+             return false;
+           } else if (selectedIDs.length > 1 && ids.length === 1 || selectedIDs.length === 1 && ids.length > 1) {
+             // switch between single- and multi-select UI
+             context.enter(modeSelect(context, ids));
+             return false;
+           }
+
+           selectedIDs = ids;
+           return true;
+         } // find the parent ways for nextVertex, previousVertex, and selectParent
+
+
+         function parentWaysIdsOfSelection(onlyCommonParents) {
+           var graph = context.graph();
+           var parents = [];
+
+           for (var i = 0; i < selectedIDs.length; i++) {
+             var entity = context.hasEntity(selectedIDs[i]);

 
 

-               return;
-             } else {
-               _history.merge(result.data, result.extent);
+             if (!entity || entity.geometry(graph) !== 'vertex') {
+               return []; // selection includes some non-vertices
+             }

 
 

-               if (typeof callback === 'function') {
-                 callback(err, result);
-               }
+             var currParents = graph.parentWays(entity).map(function (w) {
+               return w.id;
+             });

 
 

-               return;
+             if (!parents.length) {
+               parents = currParents;
+               continue;

              }
              }

-           };
-         }

 
 

-         context.loadTiles = function (projection, callback) {
-           var handle = window.requestIdleCallback(function () {
-             _deferred["delete"](handle);
+             parents = (onlyCommonParents ? utilArrayIntersection : utilArrayUnion)(parents, currParents);

 
 

-             if (_connection && context.editableDataEnabled()) {
-               var cid = _connection.getConnectionId();
+             if (!parents.length) {
+               return [];
+             }
+           }

 
 

-               _connection.loadTiles(projection, afterLoad(cid, callback));
+           return parents;
+         } // find the child nodes for selected ways
+
+
+         function childNodeIdsOfSelection(onlyCommon) {
+           var graph = context.graph();
+           var childs = [];
+
+           for (var i = 0; i < selectedIDs.length; i++) {
+             var entity = context.hasEntity(selectedIDs[i]);
+
+             if (!entity || !['area', 'line'].includes(entity.geometry(graph))) {
+               return []; // selection includes non-area/non-line

              }
              }

-           });

 
 

-           _deferred.add(handle);
-         };
+             var currChilds = graph.childNodes(entity).map(function (node) {
+               return node.id;
+             });

 
 

-         context.loadTileAtLoc = function (loc, callback) {
-           var handle = window.requestIdleCallback(function () {
-             _deferred["delete"](handle);
+             if (!childs.length) {
+               childs = currChilds;
+               continue;
+             }

 
 

-             if (_connection && context.editableDataEnabled()) {
-               var cid = _connection.getConnectionId();
+             childs = (onlyCommon ? utilArrayIntersection : utilArrayUnion)(childs, currChilds);

 
 

-               _connection.loadTileAtLoc(loc, afterLoad(cid, callback));
+             if (!childs.length) {
+               return [];

              }
              }

-           });
+           }

 
 

-           _deferred.add(handle);
-         };
+           return childs;
+         }

 
 

-         context.loadEntity = function (entityID, callback) {
-           if (_connection) {
-             var cid = _connection.getConnectionId();
+         function checkFocusedParent() {
+           if (_focusedParentWayId) {
+             var parents = parentWaysIdsOfSelection(true);
+             if (parents.indexOf(_focusedParentWayId) === -1) _focusedParentWayId = null;
+           }
+         }
+
+         function parentWayIdForVertexNavigation() {
+           var parentIds = parentWaysIdsOfSelection(true);

 
 

-             _connection.loadEntity(entityID, afterLoad(cid, callback));
+           if (_focusedParentWayId && parentIds.indexOf(_focusedParentWayId) !== -1) {
+             // prefer the previously seen parent
+             return _focusedParentWayId;

            }
            }

+
+           return parentIds.length ? parentIds[0] : null;
+         }
+
+         mode.selectedIDs = function (val) {
+           if (!arguments.length) return selectedIDs;
+           selectedIDs = val;
+           return mode;

          };
 
          };
 

-         context.zoomToEntity = function (entityID, zoomTo) {
-           if (zoomTo !== false) {
-             context.loadEntity(entityID, function (err, result) {
-               if (err) return;
-               var entity = result.data.find(function (e) {
-                 return e.id === entityID;
-               });
+         mode.zoomToSelected = function () {
+           context.map().zoomToEase(selectedEntities());
+         };

 
 

-               if (entity) {
-                 _map.zoomTo(entity);
-               }
-             });
-           }
+         mode.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return mode;
+         };

 
 

-           _map.on('drawn.zoomToEntity', function () {
-             if (!context.hasEntity(entityID)) return;
+         mode.selectBehavior = function (val) {
+           if (!arguments.length) return _selectBehavior;
+           _selectBehavior = val;
+           return mode;
+         };

 
 

-             _map.on('drawn.zoomToEntity', null);
+         mode.follow = function (val) {
+           if (!arguments.length) return _follow;
+           _follow = val;
+           return mode;
+         };

 
 

-             context.on('enter.zoomToEntity', null);
-             context.enter(modeSelect(context, [entityID]));
+         function loadOperations() {
+           _operations.forEach(function (operation) {
+             if (operation.behavior) {
+               context.uninstall(operation.behavior);
+             }

            });
 
            });
 

-           context.on('enter.zoomToEntity', function () {
-             if (_mode.id !== 'browse') {
-               _map.on('drawn.zoomToEntity', null);
+           _operations = Object.values(Operations).map(function (o) {
+             return o(context, selectedIDs);
+           }).filter(function (o) {
+             return o.id !== 'delete' && o.id !== 'downgrade' && o.id !== 'copy';
+           }).concat([// group copy/downgrade/delete operation together at the end of the list
+           operationCopy(context, selectedIDs), operationDowngrade(context, selectedIDs), operationDelete(context, selectedIDs)]).filter(function (operation) {
+             return operation.available();
+           });

 
 

-               context.on('enter.zoomToEntity', null);
+           _operations.forEach(function (operation) {
+             if (operation.behavior) {
+               context.install(operation.behavior);

              }
              }

-           });
+           }); // remove any displayed menu
+
+
+           context.ui().closeEditMenu();
+         }
+
+         mode.operations = function () {
+           return _operations;

          };
 
          };
 

-         var _minEditableZoom = 16;
+         mode.enter = function () {
+           if (!checkSelectedIDs()) return;
+           context.features().forceVisible(selectedIDs);

 
 

-         context.minEditableZoom = function (val) {
-           if (!arguments.length) return _minEditableZoom;
-           _minEditableZoom = val;
+           _modeDragNode.restoreSelectedIDs(selectedIDs);

 
 

-           if (_connection) {
-             _connection.tileZoom(val);
+           loadOperations();
+
+           if (!_behaviors.length) {
+             if (!_selectBehavior) _selectBehavior = behaviorSelect(context);
+             _behaviors = [behaviorPaste(context), _breatheBehavior, behaviorHover(context).on('hover', context.ui().sidebar.hoverModeSelect), _selectBehavior, behaviorLasso(context), _modeDragNode.behavior, modeDragNote(context).behavior];

            }
 
            }
 

-           return context;
-         }; // String length limits in Unicode characters, not JavaScript UTF-16 code units
+           _behaviors.forEach(context.install);

 
 

+           keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on(['[', 'pgup'], previousVertex).on([']', 'pgdown'], nextVertex).on(['{', uiCmd('⌘['), 'home'], firstVertex).on(['}', uiCmd('⌘]'), 'end'], lastVertex).on(uiCmd('⇧←'), nudgeSelection([-10, 0])).on(uiCmd('⇧↑'), nudgeSelection([0, -10])).on(uiCmd('⇧→'), nudgeSelection([10, 0])).on(uiCmd('⇧↓'), nudgeSelection([0, 10])).on(uiCmd('⇧⌥←'), nudgeSelection([-100, 0])).on(uiCmd('⇧⌥↑'), nudgeSelection([0, -100])).on(uiCmd('⇧⌥→'), nudgeSelection([100, 0])).on(uiCmd('⇧⌥↓'), nudgeSelection([0, 100])).on(utilKeybinding.plusKeys.map(function (key) {
+             return uiCmd('⇧' + key);
+           }), scaleSelection(1.05)).on(utilKeybinding.plusKeys.map(function (key) {
+             return uiCmd('⇧⌥' + key);
+           }), scaleSelection(Math.pow(1.05, 5))).on(utilKeybinding.minusKeys.map(function (key) {
+             return uiCmd('⇧' + key);
+           }), scaleSelection(1 / 1.05)).on(utilKeybinding.minusKeys.map(function (key) {
+             return uiCmd('⇧⌥' + key);
+           }), scaleSelection(1 / Math.pow(1.05, 5))).on(['\\', 'pause'], focusNextParent).on(uiCmd('⌘↑'), selectParent).on(uiCmd('⌘↓'), selectChild).on('⎋', esc, true);
+           select(document).call(keybinding);
+           context.ui().sidebar.select(selectedIDs, _newFeature);
+           context.history().on('change.select', function () {
+             loadOperations(); // reselect after change in case relation members were removed or added

 
 

-         context.maxCharsForTagKey = function () {
-           return 255;
-         };
+             selectElements();
+           }).on('undone.select', checkSelectedIDs).on('redone.select', checkSelectedIDs);
+           context.map().on('drawn.select', selectElements).on('crossEditableZoom.select', function () {
+             selectElements();

 
 

-         context.maxCharsForTagValue = function () {
-           return 255;
-         };
+             _breatheBehavior.restartIfNeeded(context.surface());
+           });
+           context.map().doubleUpHandler().on('doubleUp.modeSelect', didDoubleUp);
+           selectElements();

 
 

-         context.maxCharsForRelationRole = function () {
-           return 255;
-         };
+           if (_follow) {
+             var extent = geoExtent();
+             var graph = context.graph();
+             selectedIDs.forEach(function (id) {
+               var entity = context.entity(id);

 
 

-         function cleanOsmString(val, maxChars) {
-           // be lenient with input
-           if (val === undefined || val === null) {
-             val = '';
-           } else {
-             val = val.toString();
-           } // remove whitespace
+               extent._extend(entity.extent(graph));
+             });
+             var loc = extent.center();
+             context.map().centerEase(loc); // we could enter the mode multiple times, so reset follow for next time

 
 

+             _follow = false;
+           }

 
 

-           val = val.trim(); // use the canonical form of the string
+           function nudgeSelection(delta) {
+             return function () {
+               // prevent nudging during low zoom selection
+               if (!context.map().withinEditableZoom()) return;
+               var moveOp = operationMove(context, selectedIDs);

 
 

-           if (val.normalize) val = val.normalize('NFC'); // trim to the number of allowed characters
+               if (moveOp.disabled()) {
+                 context.ui().flash.duration(4000).iconName('#iD-operation-' + moveOp.id).iconClass('operation disabled').label(moveOp.tooltip)();
+               } else {
+                 context.perform(actionMove(selectedIDs, delta, context.projection), moveOp.annotation());
+                 context.validator().validate();
+               }
+             };
+           }

 
 

-           return utilUnicodeCharsTruncated(val, maxChars);
-         }
+           function scaleSelection(factor) {
+             return function () {
+               // prevent scaling during low zoom selection
+               if (!context.map().withinEditableZoom()) return;
+               var nodes = utilGetAllNodes(selectedIDs, context.graph());
+               var isUp = factor > 1; // can only scale if multiple nodes are selected

 
 

-         context.cleanTagKey = function (val) {
-           return cleanOsmString(val, context.maxCharsForTagKey());
-         };
+               if (nodes.length <= 1) return;
+               var extent = utilTotalExtent(selectedIDs, context.graph()); // These disabled checks would normally be handled by an operation
+               // object, but we don't want an actual scale operation at this point.

 
 

-         context.cleanTagValue = function (val) {
-           return cleanOsmString(val, context.maxCharsForTagValue());
-         };
+               function scalingDisabled() {
+                 if (tooSmall()) {
+                   return 'too_small';
+                 } else if (extent.percentContainedIn(context.map().extent()) < 0.8) {
+                   return 'too_large';
+                 } else if (someMissing() || selectedIDs.some(incompleteRelation)) {
+                   return 'not_downloaded';
+                 } else if (selectedIDs.some(context.hasHiddenConnections)) {
+                   return 'connected_to_hidden';
+                 }

 
 

-         context.cleanRelationRole = function (val) {
-           return cleanOsmString(val, context.maxCharsForRelationRole());
-         };
-         /* History */
+                 return false;

 
 

+                 function tooSmall() {
+                   if (isUp) return false;
+                   var dLon = Math.abs(extent[1][0] - extent[0][0]);
+                   var dLat = Math.abs(extent[1][1] - extent[0][1]);
+                   return dLon < geoMetersToLon(1, extent[1][1]) && dLat < geoMetersToLat(1);
+                 }

 
 

-         var _inIntro = false;
+                 function someMissing() {
+                   if (context.inIntro()) return false;
+                   var osm = context.connection();

 
 

-         context.inIntro = function (val) {
-           if (!arguments.length) return _inIntro;
-           _inIntro = val;
-           return context;
-         }; // Immediately save the user's history to localstorage, if possible
-         // This is called someteimes, but also on the `window.onbeforeunload` handler
+                   if (osm) {
+                     var missing = nodes.filter(function (n) {
+                       return !osm.isDataLoaded(n.loc);
+                     });

 
 

+                     if (missing.length) {
+                       missing.forEach(function (loc) {
+                         context.loadTileAtLoc(loc);
+                       });
+                       return true;
+                     }
+                   }

 
 

-         context.save = function () {
-           // no history save, no message onbeforeunload
-           if (_inIntro || context.container().select('.modal').size()) return;
-           var canSave;
+                   return false;
+                 }

 
 

-           if (_mode && _mode.id === 'save') {
-             canSave = false; // Attempt to prevent user from creating duplicate changes - see #5200
+                 function incompleteRelation(id) {
+                   var entity = context.entity(id);
+                   return entity.type === 'relation' && !entity.isComplete(context.graph());
+                 }
+               }

 
 

-             if (services.osm && services.osm.isChangesetInflight()) {
-               _history.clearSaved();
+               var disabled = scalingDisabled();

 
 

-               return;
+               if (disabled) {
+                 var multi = selectedIDs.length === 1 ? 'single' : 'multiple';
+                 context.ui().flash.duration(4000).iconName('#iD-icon-no').iconClass('operation disabled').label(_t('operations.scale.' + disabled + '.' + multi))();
+               } else {
+                 var pivot = context.projection(extent.center());
+                 var annotation = _t('operations.scale.annotation.' + (isUp ? 'up' : 'down') + '.feature', {
+                   n: selectedIDs.length
+                 });
+                 context.perform(actionScale(selectedIDs, pivot, factor, context.projection), annotation);
+                 context.validator().validate();
+               }
+             };
+           }
+
+           function didDoubleUp(d3_event, loc) {
+             if (!context.map().withinEditableZoom()) return;
+             var target = select(d3_event.target);
+             var datum = target.datum();
+             var entity = datum && datum.properties && datum.properties.entity;
+             if (!entity) return;
+
+             if (entity instanceof osmWay && target.classed('target')) {
+               var choice = geoChooseEdge(context.graph().childNodes(entity), loc, context.projection);
+               var prev = entity.nodes[choice.index - 1];
+               var next = entity.nodes[choice.index];
+               context.perform(actionAddMidpoint({
+                 loc: choice.loc,
+                 edge: [prev, next]
+               }, osmNode()), _t('operations.add.annotation.vertex'));
+               context.validator().validate();
+             } else if (entity.type === 'midpoint') {
+               context.perform(actionAddMidpoint({
+                 loc: entity.loc,
+                 edge: entity.edge
+               }, osmNode()), _t('operations.add.annotation.vertex'));
+               context.validator().validate();

              }
              }

-           } else {
-             canSave = context.selectedIDs().every(function (id) {
-               var entity = context.hasEntity(id);
-               return entity && !entity.isDegenerate();
-             });

            }
 
            }
 

-           if (canSave) {
-             _history.save();
+           function selectElements() {
+             if (!checkSelectedIDs()) return;
+             var surface = context.surface();
+             surface.selectAll('.selected-member').classed('selected-member', false);
+             surface.selectAll('.selected').classed('selected', false);
+             surface.selectAll('.related').classed('related', false); // reload `_focusedParentWayId` based on the current selection
+
+             checkFocusedParent();
+
+             if (_focusedParentWayId) {
+               surface.selectAll(utilEntitySelector([_focusedParentWayId])).classed('related', true);
+             }
+
+             if (context.map().withinEditableZoom()) {
+               // Apply selection styling if not in wide selection
+               surface.selectAll(utilDeepMemberSelector(selectedIDs, context.graph(), true
+               /* skipMultipolgonMembers */
+               )).classed('selected-member', true);
+               surface.selectAll(utilEntityOrDeepMemberSelector(selectedIDs, context.graph())).classed('selected', true);
+             }

            }
 
            }
 

-           if (_history.hasChanges()) {
-             return _t('save.unsaved_changes');
+           function esc() {
+             if (context.container().select('.combobox').size()) return;
+             context.enter(modeBrowse(context));

            }
            }

-         }; // Debounce save, since it's a synchronous localStorage write,
-         // and history changes can happen frequently (e.g. when dragging).

 
 

+           function firstVertex(d3_event) {
+             d3_event.preventDefault();
+             var entity = singular();
+             var parentId = parentWayIdForVertexNavigation();
+             var way;

 
 

-         context.debouncedSave = debounce(context.save, 350);
+             if (entity && entity.type === 'way') {
+               way = entity;
+             } else if (parentId) {
+               way = context.entity(parentId);
+             }

 
 

-         function withDebouncedSave(fn) {
-           return function () {
-             var result = fn.apply(_history, arguments);
-             context.debouncedSave();
-             return result;
-           };
-         }
-         /* Graph */
+             _focusedParentWayId = way && way.id;

 
 

+             if (way) {
+               context.enter(mode.selectedIDs([way.first()]).follow(true));
+             }
+           }

 
 

-         context.hasEntity = function (id) {
-           return _history.graph().hasEntity(id);
-         };
+           function lastVertex(d3_event) {
+             d3_event.preventDefault();
+             var entity = singular();
+             var parentId = parentWayIdForVertexNavigation();
+             var way;

 
 

-         context.entity = function (id) {
-           return _history.graph().entity(id);
-         };
-         /* Modes */
+             if (entity && entity.type === 'way') {
+               way = entity;
+             } else if (parentId) {
+               way = context.entity(parentId);
+             }

 
 

+             _focusedParentWayId = way && way.id;

 
 

-         var _mode;
+             if (way) {
+               context.enter(mode.selectedIDs([way.last()]).follow(true));
+             }
+           }

 
 

-         context.mode = function () {
-           return _mode;
-         };
+           function previousVertex(d3_event) {
+             d3_event.preventDefault();
+             var parentId = parentWayIdForVertexNavigation();
+             _focusedParentWayId = parentId;
+             if (!parentId) return;
+             var way = context.entity(parentId);
+             var length = way.nodes.length;
+             var curr = way.nodes.indexOf(selectedIDs[0]);
+             var index = -1;

 
 

-         context.enter = function (newMode) {
-           if (_mode) {
-             _mode.exit();
+             if (curr > 0) {
+               index = curr - 1;
+             } else if (way.isClosed()) {
+               index = length - 2;
+             }

 
 

-             dispatch$1.call('exit', _this, _mode);
+             if (index !== -1) {
+               context.enter(mode.selectedIDs([way.nodes[index]]).follow(true));
+             }

            }
 
            }
 

-           _mode = newMode;
+           function nextVertex(d3_event) {
+             d3_event.preventDefault();
+             var parentId = parentWayIdForVertexNavigation();
+             _focusedParentWayId = parentId;
+             if (!parentId) return;
+             var way = context.entity(parentId);
+             var length = way.nodes.length;
+             var curr = way.nodes.indexOf(selectedIDs[0]);
+             var index = -1;

 
 

-           _mode.enter();
+             if (curr < length - 1) {
+               index = curr + 1;
+             } else if (way.isClosed()) {
+               index = 0;
+             }

 
 

-           dispatch$1.call('enter', _this, _mode);
-         };
+             if (index !== -1) {
+               context.enter(mode.selectedIDs([way.nodes[index]]).follow(true));
+             }
+           }

 
 

-         context.selectedIDs = function () {
-           return _mode && _mode.selectedIDs && _mode.selectedIDs() || [];
-         };
+           function focusNextParent(d3_event) {
+             d3_event.preventDefault();
+             var parents = parentWaysIdsOfSelection(true);
+             if (!parents || parents.length < 2) return;
+             var index = parents.indexOf(_focusedParentWayId);

 
 

-         context.activeID = function () {
-           return _mode && _mode.activeID && _mode.activeID();
+             if (index < 0 || index > parents.length - 2) {
+               _focusedParentWayId = parents[0];
+             } else {
+               _focusedParentWayId = parents[index + 1];
+             }
+
+             var surface = context.surface();
+             surface.selectAll('.related').classed('related', false);
+
+             if (_focusedParentWayId) {
+               surface.selectAll(utilEntitySelector([_focusedParentWayId])).classed('related', true);
+             }
+           }
+
+           function selectParent(d3_event) {
+             d3_event.preventDefault();
+             var currentSelectedIds = mode.selectedIDs();
+             var parentIds = _focusedParentWayId ? [_focusedParentWayId] : parentWaysIdsOfSelection(false);
+             if (!parentIds.length) return;
+             context.enter(mode.selectedIDs(parentIds)); // set this after re-entering the selection since we normally want it cleared on exit
+
+             _focusedVertexIds = currentSelectedIds;
+           }
+
+           function selectChild(d3_event) {
+             d3_event.preventDefault();
+             var currentSelectedIds = mode.selectedIDs();
+             var childIds = _focusedVertexIds ? _focusedVertexIds.filter(function (id) {
+               return context.hasEntity(id);
+             }) : childNodeIdsOfSelection(true);
+             if (!childIds || !childIds.length) return;
+             if (currentSelectedIds.length === 1) _focusedParentWayId = currentSelectedIds[0];
+             context.enter(mode.selectedIDs(childIds));
+           }

          };
 
          };
 

-         var _selectedNoteID;
+         mode.exit = function () {
+           // we could enter the mode multiple times but it's only new the first time
+           _newFeature = false;
+           _focusedVertexIds = null;

 
 

-         context.selectedNoteID = function (noteID) {
-           if (!arguments.length) return _selectedNoteID;
-           _selectedNoteID = noteID;
-           return context;
-         }; // NOTE: Don't change the name of this until UI v3 is merged
+           _operations.forEach(function (operation) {
+             if (operation.behavior) {
+               context.uninstall(operation.behavior);
+             }
+           });

 
 

+           _operations = [];

 
 

-         var _selectedErrorID;
+           _behaviors.forEach(context.uninstall);

 
 

-         context.selectedErrorID = function (errorID) {
-           if (!arguments.length) return _selectedErrorID;
-           _selectedErrorID = errorID;
-           return context;
+           select(document).call(keybinding.unbind);
+           context.ui().closeEditMenu();
+           context.history().on('change.select', null).on('undone.select', null).on('redone.select', null);
+           var surface = context.surface();
+           surface.selectAll('.selected-member').classed('selected-member', false);
+           surface.selectAll('.selected').classed('selected', false);
+           surface.selectAll('.highlighted').classed('highlighted', false);
+           surface.selectAll('.related').classed('related', false);
+           context.map().on('drawn.select', null);
+           context.ui().sidebar.hide();
+           context.features().forceVisible([]);
+           var entity = singular();
+
+           if (_newFeature && entity && entity.type === 'relation' && // no tags
+           Object.keys(entity.tags).length === 0 && // no parent relations
+           context.graph().parentRelations(entity).length === 0 && ( // no members or one member with no role
+           entity.members.length === 0 || entity.members.length === 1 && !entity.members[0].role)) {
+             // the user added this relation but didn't edit it at all, so just delete it
+             var deleteAction = actionDeleteRelation(entity.id, true
+             /* don't delete untagged members */
+             );
+             context.perform(deleteAction, _t('operations.delete.annotation.relation'));
+             context.validator().validate();
+           }

          };
          };

-         /* Behaviors */

 
 

+         return mode;
+       }

 
 

-         context.install = function (behavior) {
-           return context.surface().call(behavior);
+       function uiLasso(context) {
+         var group, polygon;
+         lasso.coordinates = [];
+
+         function lasso(selection) {
+           context.container().classed('lasso', true);
+           group = selection.append('g').attr('class', 'lasso hide');
+           polygon = group.append('path').attr('class', 'lasso-path');
+           group.call(uiToggle(true));
+         }
+
+         function draw() {
+           if (polygon) {
+             polygon.data([lasso.coordinates]).attr('d', function (d) {
+               return 'M' + d.join(' L') + ' Z';
+             });
+           }
+         }
+
+         lasso.extent = function () {
+           return lasso.coordinates.reduce(function (extent, point) {
+             return extent.extend(geoExtent(point));
+           }, geoExtent());

          };
 
          };
 

-         context.uninstall = function (behavior) {
-           return context.surface().call(behavior.off);
+         lasso.p = function (_) {
+           if (!arguments.length) return lasso;
+           lasso.coordinates.push(_);
+           draw();
+           return lasso;

          };
          };

-         /* Copy/Paste */
-

 
 

-         var _copyGraph;
+         lasso.close = function () {
+           if (group) {
+             group.call(uiToggle(false, function () {
+               select(this).remove();
+             }));
+           }

 
 

-         context.copyGraph = function () {
-           return _copyGraph;
+           context.container().classed('lasso', false);

          };
 
          };
 

-         var _copyIDs = [];
+         return lasso;
+       }

 
 

-         context.copyIDs = function (val) {
-           if (!arguments.length) return _copyIDs;
-           _copyIDs = val;
-           _copyGraph = _history.graph();
-           return context;
-         };
+       function behaviorLasso(context) {
+         // use pointer events on supported platforms; fallback to mouse events
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';

 
 

-         var _copyLonLat;
+         var behavior = function behavior(selection) {
+           var lasso;

 
 

-         context.copyLonLat = function (val) {
-           if (!arguments.length) return _copyLonLat;
-           _copyLonLat = val;
-           return context;
-         };
-         /* Background */
+           function pointerdown(d3_event) {
+             var button = 0; // left

 
 

+             if (d3_event.button === button && d3_event.shiftKey === true) {
+               lasso = null;
+               select(window).on(_pointerPrefix + 'move.lasso', pointermove).on(_pointerPrefix + 'up.lasso', pointerup);
+               d3_event.stopPropagation();
+             }
+           }

 
 

-         var _background;
+           function pointermove() {
+             if (!lasso) {
+               lasso = uiLasso(context);
+               context.surface().call(lasso);
+             }

 
 

-         context.background = function () {
-           return _background;
-         };
-         /* Features */
+             lasso.p(context.map().mouse());
+           }

 
 

+           function normalize(a, b) {
+             return [[Math.min(a[0], b[0]), Math.min(a[1], b[1])], [Math.max(a[0], b[0]), Math.max(a[1], b[1])]];
+           }

 
 

-         var _features;
+           function lassoed() {
+             if (!lasso) return [];
+             var graph = context.graph();
+             var limitToNodes;

 
 

-         context.features = function () {
-           return _features;
-         };
+             if (context.map().editableDataEnabled(true
+             /* skipZoomCheck */
+             ) && context.map().isInWideSelection()) {
+               // only select from the visible nodes
+               limitToNodes = new Set(utilGetAllNodes(context.selectedIDs(), graph));
+             } else if (!context.map().editableDataEnabled()) {
+               return [];
+             }

 
 

-         context.hasHiddenConnections = function (id) {
-           var graph = _history.graph();
+             var bounds = lasso.extent().map(context.projection.invert);
+             var extent = geoExtent(normalize(bounds[0], bounds[1]));
+             var intersects = context.history().intersects(extent).filter(function (entity) {
+               return entity.type === 'node' && (!limitToNodes || limitToNodes.has(entity)) && geoPointInPolygon(context.projection(entity.loc), lasso.coordinates) && !context.features().isHidden(entity, graph, entity.geometry(graph));
+             }); // sort the lassoed nodes as best we can

 
 

-           var entity = graph.entity(id);
-           return _features.hasHiddenConnections(entity, graph);
-         };
-         /* Photos */
+             intersects.sort(function (node1, node2) {
+               var parents1 = graph.parentWays(node1);
+               var parents2 = graph.parentWays(node2);

 
 

+               if (parents1.length && parents2.length) {
+                 // both nodes are vertices
+                 var sharedParents = utilArrayIntersection(parents1, parents2);

 
 

-         var _photos;
+                 if (sharedParents.length) {
+                   var sharedParentNodes = sharedParents[0].nodes; // vertices are members of the same way; sort them in their listed order

 
 

-         context.photos = function () {
-           return _photos;
-         };
-         /* Map */
+                   return sharedParentNodes.indexOf(node1.id) - sharedParentNodes.indexOf(node2.id);
+                 } else {
+                   // vertices do not share a way; group them by their respective parent ways
+                   return parseFloat(parents1[0].id.slice(1)) - parseFloat(parents2[0].id.slice(1));
+                 }
+               } else if (parents1.length || parents2.length) {
+                 // only one node is a vertex; sort standalone points before vertices
+                 return parents1.length - parents2.length;
+               } // both nodes are standalone points; sort left to right

 
 
 
 

-         var _map;
+               return node1.loc[0] - node2.loc[0];
+             });
+             return intersects.map(function (entity) {
+               return entity.id;
+             });
+           }

 
 

-         context.map = function () {
-           return _map;
-         };
+           function pointerup() {
+             select(window).on(_pointerPrefix + 'move.lasso', null).on(_pointerPrefix + 'up.lasso', null);
+             if (!lasso) return;
+             var ids = lassoed();
+             lasso.close();

 
 

-         context.layers = function () {
-           return _map.layers();
-         };
+             if (ids.length) {
+               context.enter(modeSelect(context, ids));
+             }
+           }

 
 

-         context.surface = function () {
-           return _map.surface;
+           selection.on(_pointerPrefix + 'down.lasso', pointerdown);

          };
 
          };
 

-         context.editableDataEnabled = function () {
-           return _map.editableDataEnabled();
+         behavior.off = function (selection) {
+           selection.on(_pointerPrefix + 'down.lasso', null);

          };
 
          };
 

-         context.surfaceRect = function () {
-           return _map.surface.node().getBoundingClientRect();
-         };
+         return behavior;
+       }

 
 

-         context.editable = function () {
-           // don't allow editing during save
-           var mode = context.mode();
-           if (!mode || mode.id === 'save') return false;
-           return _map.editableDataEnabled();
+       function modeBrowse(context) {
+         var mode = {
+           button: 'browse',
+           id: 'browse',
+           title: _t('modes.browse.title'),
+           description: _t('modes.browse.description')

          };
          };

-         /* Debug */
+         var sidebar;

 
 

+         var _selectBehavior;

 
 

-         var _debugFlags = {
-           tile: false,
-           // tile boundaries
-           collision: false,
-           // label collision bounding boxes
-           imagery: false,
-           // imagery bounding polygons
-           target: false,
-           // touch targets
-           downloaded: false // downloaded data from osm
+         var _behaviors = [];

 
 

+         mode.selectBehavior = function (val) {
+           if (!arguments.length) return _selectBehavior;
+           _selectBehavior = val;
+           return mode;

          };
 
          };
 

-         context.debugFlags = function () {
-           return _debugFlags;
-         };
+         mode.enter = function () {
+           if (!_behaviors.length) {
+             if (!_selectBehavior) _selectBehavior = behaviorSelect(context);
+             _behaviors = [behaviorPaste(context), behaviorHover(context).on('hover', context.ui().sidebar.hover), _selectBehavior, behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
+           }

 
 

-         context.getDebug = function (flag) {
-           return flag && _debugFlags[flag];
-         };
+           _behaviors.forEach(context.install); // Get focus on the body.

 
 

-         context.setDebug = function (flag, val) {
-           if (arguments.length === 1) val = true;
-           _debugFlags[flag] = val;
-           dispatch$1.call('change');
-           return context;
-         };
-         /* Container */

 
 

+           if (document.activeElement && document.activeElement.blur) {
+             document.activeElement.blur();
+           }

 
 

-         var _container = select(null);
+           if (sidebar) {
+             context.ui().sidebar.show(sidebar);
+           } else {
+             context.ui().sidebar.select(null);
+           }
+         };

 
 

-         context.container = function (val) {
-           if (!arguments.length) return _container;
-           _container = val;
+         mode.exit = function () {
+           context.ui().sidebar.hover.cancel();

 
 

-           _container.classed('ideditor', true);
+           _behaviors.forEach(context.uninstall);

 
 

-           return context;
+           if (sidebar) {
+             context.ui().sidebar.hide();
+           }

          };
 
          };
 

-         context.containerNode = function (val) {
-           if (!arguments.length) return context.container().node();
-           context.container(select(val));
-           return context;
+         mode.sidebar = function (_) {
+           if (!arguments.length) return sidebar;
+           sidebar = _;
+           return mode;

          };
 
          };
 

-         var _embed;
-
-         context.embed = function (val) {
-           if (!arguments.length) return _embed;
-           _embed = val;
-           return context;
+         mode.operations = function () {
+           return [operationPaste(context)];

          };
          };

-         /* Assets */

 
 

+         return mode;
+       }

 
 

-         var _assetPath = '';
-
-         context.assetPath = function (val) {
-           if (!arguments.length) return _assetPath;
-           _assetPath = val;
-           _mainFileFetcher.assetPath(val);
-           return context;
-         };
+       function behaviorAddWay(context) {
+         var dispatch = dispatch$8('start', 'startFromWay', 'startFromNode');
+         var draw = behaviorDraw(context);

 
 

-         var _assetMap = {};
+         function behavior(surface) {
+           draw.on('click', function () {
+             dispatch.apply('start', this, arguments);
+           }).on('clickWay', function () {
+             dispatch.apply('startFromWay', this, arguments);
+           }).on('clickNode', function () {
+             dispatch.apply('startFromNode', this, arguments);
+           }).on('cancel', behavior.cancel).on('finish', behavior.cancel);
+           context.map().dblclickZoomEnable(false);
+           surface.call(draw);
+         }

 
 

-         context.assetMap = function (val) {
-           if (!arguments.length) return _assetMap;
-           _assetMap = val;
-           _mainFileFetcher.assetMap(val);
-           return context;
+         behavior.off = function (surface) {
+           surface.call(draw.off);

          };
 
          };
 

-         context.asset = function (val) {
-           if (/^http(s)?:\/\//i.test(val)) return val;
-           var filename = _assetPath + val;
-           return _assetMap[filename] || filename;
+         behavior.cancel = function () {
+           window.setTimeout(function () {
+             context.map().dblclickZoomEnable(true);
+           }, 1000);
+           context.enter(modeBrowse(context));

          };
 
          };
 

-         context.imagePath = function (val) {
-           return context.asset("img/".concat(val));
-         };
-         /* reset (aka flush) */
+         return utilRebind(behavior, dispatch, 'on');
+       }

 
 

+       function behaviorHash(context) {
+         // cached window.location.hash
+         var _cachedHash = null; // allowable latitude range

 
 

-         context.reset = context.flush = function () {
-           context.debouncedSave.cancel();
-           Array.from(_deferred).forEach(function (handle) {
-             window.cancelIdleCallback(handle);
+         var _latitudeLimit = 90 - 1e-8;

 
 

-             _deferred["delete"](handle);
+         function computedHashParameters() {
+           var map = context.map();
+           var center = map.center();
+           var zoom = map.zoom();
+           var precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));
+           var oldParams = utilObjectOmit(utilStringQs(window.location.hash), ['comment', 'source', 'hashtags', 'walkthrough']);
+           var newParams = {};
+           delete oldParams.id;
+           var selected = context.selectedIDs().filter(function (id) {
+             return context.hasEntity(id);

            });
            });

-           Object.values(services).forEach(function (service) {
-             if (service && typeof service.reset === 'function') {
-               service.reset(context);
-             }
+
+           if (selected.length) {
+             newParams.id = selected.join(',');
+           }
+
+           newParams.map = zoom.toFixed(2) + '/' + center[1].toFixed(precision) + '/' + center[0].toFixed(precision);
+           return Object.assign(oldParams, newParams);
+         }
+
+         function computedHash() {
+           return '#' + utilQsString(computedHashParameters(), true);
+         }
+
+         function computedTitle(includeChangeCount) {
+           var baseTitle = context.documentTitleBase() || 'iD';
+           var contextual;
+           var changeCount;
+           var titleID;
+           var selected = context.selectedIDs().filter(function (id) {
+             return context.hasEntity(id);

            });
            });

-           context.changeset = null;

 
 

-           _validator.reset();
+           if (selected.length) {
+             var firstLabel = utilDisplayLabel(context.entity(selected[0]), context.graph());

 
 

-           _features.reset();
+             if (selected.length > 1) {
+               contextual = _t('title.labeled_and_more', {
+                 labeled: firstLabel,
+                 count: selected.length - 1
+               });
+             } else {
+               contextual = firstLabel;
+             }

 
 

-           _history.reset();
+             titleID = 'context';
+           }

 
 

-           _uploader.reset(); // don't leave stale state in the inspector
+           if (includeChangeCount) {
+             changeCount = context.history().difference().summary().length;

 
 

+             if (changeCount > 0) {
+               titleID = contextual ? 'changes_context' : 'changes';
+             }
+           }

 
 

-           context.container().select('.inspector-wrap *').remove();
-           return context;
-         };
-         /* Projections */
+           if (titleID) {
+             return _t('title.format.' + titleID, {
+               changes: changeCount,
+               base: baseTitle,
+               context: contextual
+             });
+           }

 
 

+           return baseTitle;
+         }

 
 

-         context.projection = geoRawMercator();
-         context.curtainProjection = geoRawMercator();
-         /* Init */
+         function updateTitle(includeChangeCount) {
+           if (!context.setsDocumentTitle()) return;
+           var newTitle = computedTitle(includeChangeCount);

 
 

-         context.init = function () {
-           instantiateInternal();
-           initializeDependents();
-           return context; // Load variables and properties. No property of `context` should be accessed
-           // until this is complete since load statuses are indeterminate. The order
-           // of instantiation shouldn't matter.
+           if (document.title !== newTitle) {
+             document.title = newTitle;
+           }
+         }

 
 

-           function instantiateInternal() {
-             _history = coreHistory(context);
-             context.graph = _history.graph;
-             context.pauseChangeDispatch = _history.pauseChangeDispatch;
-             context.resumeChangeDispatch = _history.resumeChangeDispatch;
-             context.perform = withDebouncedSave(_history.perform);
-             context.replace = withDebouncedSave(_history.replace);
-             context.pop = withDebouncedSave(_history.pop);
-             context.overwrite = withDebouncedSave(_history.overwrite);
-             context.undo = withDebouncedSave(_history.undo);
-             context.redo = withDebouncedSave(_history.redo);
-             _validator = coreValidator(context);
-             _uploader = coreUploader(context);
-             _background = rendererBackground(context);
-             _features = rendererFeatures(context);
-             _map = rendererMap(context);
-             _photos = rendererPhotos(context);
-             _ui = uiInit(context);
-           } // Set up objects that might need to access properties of `context`. The order
-           // might matter if dependents make calls to each other. Be wary of async calls.
+         function updateHashIfNeeded() {
+           if (context.inIntro()) return;
+           var latestHash = computedHash();

 
 

+           if (_cachedHash !== latestHash) {
+             _cachedHash = latestHash; // Update the URL hash without affecting the browser navigation stack,
+             // though unavoidably creating a browser history entry

 
 

-           function initializeDependents() {
-             if (context.initialHashParams.presets) {
-               _mainPresetIndex.addablePresetIDs(new Set(context.initialHashParams.presets.split(',')));
-             }
+             window.history.replaceState(null, computedTitle(false
+             /* includeChangeCount */
+             ), latestHash); // set the title we want displayed for the browser tab/window

 
 

-             if (context.initialHashParams.locale) {
-               _mainLocalizer.preferredLocaleCodes(context.initialHashParams.locale);
-             } // kick off some async work
+             updateTitle(true
+             /* includeChangeCount */
+             );
+           }
+         }

 
 

+         var _throttledUpdate = throttle(updateHashIfNeeded, 500);

 
 

-             _mainLocalizer.ensureLoaded();
+         var _throttledUpdateTitle = throttle(function () {
+           updateTitle(true
+           /* includeChangeCount */
+           );
+         }, 500);

 
 

-             _background.ensureLoaded();
+         function hashchange() {
+           // ignore spurious hashchange events
+           if (window.location.hash === _cachedHash) return;
+           _cachedHash = window.location.hash;
+           var q = utilStringQs(_cachedHash);
+           var mapArgs = (q.map || '').split('/').map(Number);

 
 

-             _mainPresetIndex.ensureLoaded();
-             Object.values(services).forEach(function (service) {
-               if (service && typeof service.init === 'function') {
-                 service.init();
+           if (mapArgs.length < 3 || mapArgs.some(isNaN)) {
+             // replace bogus hash
+             updateHashIfNeeded();
+           } else {
+             // don't update if the new hash already reflects the state of iD
+             if (_cachedHash === computedHash()) return;
+             var mode = context.mode();
+             context.map().centerZoom([mapArgs[2], Math.min(_latitudeLimit, Math.max(-_latitudeLimit, mapArgs[1]))], mapArgs[0]);
+
+             if (q.id && mode) {
+               var ids = q.id.split(',').filter(function (id) {
+                 return context.hasEntity(id);
+               });
+
+               if (ids.length && (mode.id === 'browse' || mode.id === 'select' && !utilArrayIdentical(mode.selectedIDs(), ids))) {
+                 context.enter(modeSelect(context, ids));
+                 return;

                }
                }

-             });
+             }

 
 

-             _map.init();
+             var center = context.map().center();
+             var dist = geoSphericalDistance(center, [mapArgs[2], mapArgs[1]]);
+             var maxdist = 500; // Don't allow the hash location to change too much while drawing
+             // This can happen if the user accidentally hit the back button.  #3996

 
 

-             _validator.init();
+             if (mode && mode.id.match(/^draw/) !== null && dist > maxdist) {
+               context.enter(modeBrowse(context));
+               return;
+             }
+           }
+         }

 
 

-             _features.init();
+         function behavior() {
+           context.map().on('move.behaviorHash', _throttledUpdate);
+           context.history().on('change.behaviorHash', _throttledUpdateTitle);
+           context.on('enter.behaviorHash', _throttledUpdate);
+           select(window).on('hashchange.behaviorHash', hashchange);

 
 

-             if (services.maprules && context.initialHashParams.maprules) {
-               d3_json(context.initialHashParams.maprules).then(function (mapcss) {
-                 services.maprules.init();
-                 mapcss.forEach(function (mapcssSelector) {
-                   return services.maprules.addRule(mapcssSelector);
-                 });
-               })["catch"](function () {
-                 /* ignore */
-               });
-             } // if the container isn't available, e.g. when testing, don't load the UI
+           if (window.location.hash) {
+             var q = utilStringQs(window.location.hash);
+
+             if (q.id) {
+               //if (!context.history().hasRestorableChanges()) {
+               // targeting specific features: download, select, and zoom to them
+               context.zoomToEntity(q.id.split(',')[0], !q.map); //}
+             }

 
 

+             if (q.walkthrough === 'true') {
+               behavior.startWalkthrough = true;
+             }

 
 

-             if (!context.container().empty()) {
-               _ui.ensureLoaded().then(function () {
-                 _photos.init();
-               });
+             if (q.map) {
+               behavior.hadHash = true;

              }
              }

+
+             hashchange();
+             updateTitle(false);

            }
            }

+         }
+
+         behavior.off = function () {
+           _throttledUpdate.cancel();
+
+           _throttledUpdateTitle.cancel();
+
+           context.map().on('move.behaviorHash', null);
+           context.on('enter.behaviorHash', null);
+           select(window).on('hashchange.behaviorHash', null);
+           window.location.hash = '';

          };
 
          };
 

-         return context;
+         return behavior;

        }
 
        // This is only done in testing because of the performance penalty.
 
        var debug = false; // Reexport just what our tests use, see #4379
        var d3 = {
        }
 
        // This is only done in testing because of the performance penalty.
 
        var debug = false; // Reexport just what our tests use, see #4379
        var d3 = {

-         dispatch: dispatch,
+         dispatch: dispatch$8,

          geoMercator: mercator,
          geoProjection: projection,
          polygonArea: d3_polygonArea,
          geoMercator: mercator,
          geoProjection: projection,
          polygonArea: d3_polygonArea,


@@ -98867,6 +103527,8 @@
                coreLocalizer: coreLocalizer,
                t: _t,
                localizer: _mainLocalizer,
                coreLocalizer: coreLocalizer,
                t: _t,
                localizer: _mainLocalizer,

+               coreLocations: coreLocations,
+               locationManager: _mainLocations,

                prefs: corePreferences,
                coreTree: coreTree,
                coreUploader: coreUploader,
                prefs: corePreferences,
                coreTree: coreTree,
                coreUploader: coreUploader,


@@ -98997,6 +103659,7 @@
                serviceMapillary: serviceMapillary,
                serviceMapRules: serviceMapRules,
                serviceNominatim: serviceNominatim,
                serviceMapillary: serviceMapillary,
                serviceMapRules: serviceMapRules,
                serviceNominatim: serviceNominatim,

+               serviceNsi: serviceNsi,

                serviceOpenstreetcam: serviceOpenstreetcam,
                serviceOsm: serviceOsm,
                serviceOsmWikibase: serviceOsmWikibase,
                serviceOpenstreetcam: serviceOpenstreetcam,
                serviceOsm: serviceOsm,
                serviceOsmWikibase: serviceOsmWikibase,


@@ -99054,7 +103717,8 @@
                uiFieldCycleway: uiFieldCycleway,
                uiFieldLanes: uiFieldLanes,
                uiFieldLocalized: uiFieldLocalized,
                uiFieldCycleway: uiFieldCycleway,
                uiFieldLanes: uiFieldLanes,
                uiFieldLocalized: uiFieldLocalized,

-               uiFieldMaxspeed: uiFieldMaxspeed,
+               uiFieldRoadheight: uiFieldRoadheight,
+               uiFieldRoadspeed: uiFieldRoadspeed,

                uiFieldStructureRadio: uiFieldRadio,
                uiFieldRadio: uiFieldRadio,
                uiFieldRestrictions: uiFieldRestrictions,
                uiFieldStructureRadio: uiFieldRadio,
                uiFieldRadio: uiFieldRadio,
                uiFieldRestrictions: uiFieldRestrictions,


@@ -99180,9 +103844,10 @@
                utilDisplayLabel: utilDisplayLabel,
                utilEntityRoot: utilEntityRoot,
                utilEditDistance: utilEditDistance,
                utilDisplayLabel: utilDisplayLabel,
                utilEntityRoot: utilEntityRoot,
                utilEditDistance: utilEditDistance,

-               utilEntitySelector: utilEntitySelector,
+               utilEntityAndDeepMemberIDs: utilEntityAndDeepMemberIDs,

                utilEntityOrMemberSelector: utilEntityOrMemberSelector,
                utilEntityOrDeepMemberSelector: utilEntityOrDeepMemberSelector,
                utilEntityOrMemberSelector: utilEntityOrMemberSelector,
                utilEntityOrDeepMemberSelector: utilEntityOrDeepMemberSelector,

+               utilEntitySelector: utilEntitySelector,

                utilFastMouse: utilFastMouse,
                utilFunctor: utilFunctor,
                utilGetAllNodes: utilGetAllNodes,
                utilFastMouse: utilFastMouse,
                utilFunctor: utilFunctor,
                utilGetAllNodes: utilGetAllNodes,